Restoring authorship annotation for <anastasy888@yandex-team.ru>. Commit 2 of 2.

46 files changed, 5904 insertions, 5904 deletions

diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook.h
index ebed3a52bc..5bdf360a57 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook.h
@@ -1,34 +1,34 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ 
-#define ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ 
- 
-#include <atomic> 
-#include <cassert> 
-#include <cstdint> 
-#include <utility> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
+#define ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
+
+#include <atomic>
+#include <cassert>
+#include <cstdint>
+#include <utility>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/config.h"
 
 #if defined(_MSC_VER) && !defined(__clang__)
-#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 0 
-#else 
-#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 1 
-#endif 
- 
+#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 0
+#else
+#define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 1
+#endif
+
 #if defined(_MSC_VER)
 #define ABSL_HAVE_WORKING_ATOMIC_POINTER 0
 #else
@@ -37,11 +37,11 @@
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-template <typename T> 
-class AtomicHook; 
- 
+namespace base_internal {
+
+template <typename T>
+class AtomicHook;
+
 // To workaround AtomicHook not being constant-initializable on some platforms,
 // prefer to annotate instances with `ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES`
 // instead of `ABSL_CONST_INIT`.
@@ -51,150 +51,150 @@ class AtomicHook;
 #define ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
 #endif
 
-// `AtomicHook` is a helper class, templatized on a raw function pointer type, 
-// for implementing Abseil customization hooks.  It is a callable object that 
-// dispatches to the registered hook.  Objects of type `AtomicHook` must have 
-// static or thread storage duration. 
-// 
-// A default constructed object performs a no-op (and returns a default 
-// constructed object) if no hook has been registered. 
-// 
+// `AtomicHook` is a helper class, templatized on a raw function pointer type,
+// for implementing Abseil customization hooks.  It is a callable object that
+// dispatches to the registered hook.  Objects of type `AtomicHook` must have
+// static or thread storage duration.
+//
+// A default constructed object performs a no-op (and returns a default
+// constructed object) if no hook has been registered.
+//
 // Hooks can be pre-registered via constant initialization, for example:
 //
 // ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static AtomicHook<void(*)()>
 //     my_hook(DefaultAction);
 //
-// and then changed at runtime via a call to `Store()`. 
-// 
-// Reads and writes guarantee memory_order_acquire/memory_order_release 
-// semantics. 
-template <typename ReturnType, typename... Args> 
-class AtomicHook<ReturnType (*)(Args...)> { 
- public: 
-  using FnPtr = ReturnType (*)(Args...); 
- 
-  // Constructs an object that by default performs a no-op (and 
-  // returns a default constructed object) when no hook as been registered. 
-  constexpr AtomicHook() : AtomicHook(DummyFunction) {} 
- 
-  // Constructs an object that by default dispatches to/returns the 
-  // pre-registered default_fn when no hook has been registered at runtime. 
-#if ABSL_HAVE_WORKING_ATOMIC_POINTER && ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 
-  explicit constexpr AtomicHook(FnPtr default_fn) 
-      : hook_(default_fn), default_fn_(default_fn) {} 
+// and then changed at runtime via a call to `Store()`.
+//
+// Reads and writes guarantee memory_order_acquire/memory_order_release
+// semantics.
+template <typename ReturnType, typename... Args>
+class AtomicHook<ReturnType (*)(Args...)> {
+ public:
+  using FnPtr = ReturnType (*)(Args...);
+
+  // Constructs an object that by default performs a no-op (and
+  // returns a default constructed object) when no hook as been registered.
+  constexpr AtomicHook() : AtomicHook(DummyFunction) {}
+
+  // Constructs an object that by default dispatches to/returns the
+  // pre-registered default_fn when no hook has been registered at runtime.
+#if ABSL_HAVE_WORKING_ATOMIC_POINTER && ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+  explicit constexpr AtomicHook(FnPtr default_fn)
+      : hook_(default_fn), default_fn_(default_fn) {}
 #elif ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
   explicit constexpr AtomicHook(FnPtr default_fn)
       : hook_(kUninitialized), default_fn_(default_fn) {}
-#else 
+#else
   // As of January 2020, on all known versions of MSVC this constructor runs in
   // the global constructor sequence.  If `Store()` is called by a dynamic
   // initializer, we want to preserve the value, even if this constructor runs
   // after the call to `Store()`.  If not, `hook_` will be
   // zero-initialized by the linker and we have no need to set it.
-  // https://developercommunity.visualstudio.com/content/problem/336946/class-with-constexpr-constructor-not-using-static.html 
-  explicit constexpr AtomicHook(FnPtr default_fn) 
-      : /* hook_(deliberately omitted), */ default_fn_(default_fn) { 
-    static_assert(kUninitialized == 0, "here we rely on zero-initialization"); 
-  } 
-#endif 
- 
-  // Stores the provided function pointer as the value for this hook. 
-  // 
-  // This is intended to be called once.  Multiple calls are legal only if the 
-  // same function pointer is provided for each call.  The store is implemented 
-  // as a memory_order_release operation, and read accesses are implemented as 
-  // memory_order_acquire. 
-  void Store(FnPtr fn) { 
-    bool success = DoStore(fn); 
-    static_cast<void>(success); 
-    assert(success); 
-  } 
- 
-  // Invokes the registered callback.  If no callback has yet been registered, a 
-  // default-constructed object of the appropriate type is returned instead. 
-  template <typename... CallArgs> 
-  ReturnType operator()(CallArgs&&... args) const { 
-    return DoLoad()(std::forward<CallArgs>(args)...); 
-  } 
- 
-  // Returns the registered callback, or nullptr if none has been registered. 
-  // Useful if client code needs to conditionalize behavior based on whether a 
-  // callback was registered. 
-  // 
-  // Note that atomic_hook.Load()() and atomic_hook() have different semantics: 
-  // operator()() will perform a no-op if no callback was registered, while 
-  // Load()() will dereference a null function pointer.  Prefer operator()() to 
-  // Load()() unless you must conditionalize behavior on whether a hook was 
-  // registered. 
-  FnPtr Load() const { 
-    FnPtr ptr = DoLoad(); 
-    return (ptr == DummyFunction) ? nullptr : ptr; 
-  } 
- 
- private: 
-  static ReturnType DummyFunction(Args...) { 
-    return ReturnType(); 
-  } 
- 
-  // Current versions of MSVC (as of September 2017) have a broken 
-  // implementation of std::atomic<T*>:  Its constructor attempts to do the 
-  // equivalent of a reinterpret_cast in a constexpr context, which is not 
-  // allowed. 
-  // 
-  // This causes an issue when building with LLVM under Windows.  To avoid this, 
-  // we use a less-efficient, intptr_t-based implementation on Windows. 
-#if ABSL_HAVE_WORKING_ATOMIC_POINTER 
-  // Return the stored value, or DummyFunction if no value has been stored. 
-  FnPtr DoLoad() const { return hook_.load(std::memory_order_acquire); } 
- 
-  // Store the given value.  Returns false if a different value was already 
-  // stored to this object. 
-  bool DoStore(FnPtr fn) { 
-    assert(fn); 
-    FnPtr expected = default_fn_; 
-    const bool store_succeeded = hook_.compare_exchange_strong( 
-        expected, fn, std::memory_order_acq_rel, std::memory_order_acquire); 
-    const bool same_value_already_stored = (expected == fn); 
-    return store_succeeded || same_value_already_stored; 
-  } 
- 
-  std::atomic<FnPtr> hook_; 
-#else  // !ABSL_HAVE_WORKING_ATOMIC_POINTER 
-  // Use a sentinel value unlikely to be the address of an actual function. 
-  static constexpr intptr_t kUninitialized = 0; 
- 
-  static_assert(sizeof(intptr_t) >= sizeof(FnPtr), 
-                "intptr_t can't contain a function pointer"); 
- 
-  FnPtr DoLoad() const { 
-    const intptr_t value = hook_.load(std::memory_order_acquire); 
-    if (value == kUninitialized) { 
-      return default_fn_; 
-    } 
-    return reinterpret_cast<FnPtr>(value); 
-  } 
- 
-  bool DoStore(FnPtr fn) { 
-    assert(fn); 
-    const auto value = reinterpret_cast<intptr_t>(fn); 
-    intptr_t expected = kUninitialized; 
-    const bool store_succeeded = hook_.compare_exchange_strong( 
-        expected, value, std::memory_order_acq_rel, std::memory_order_acquire); 
-    const bool same_value_already_stored = (expected == value); 
-    return store_succeeded || same_value_already_stored; 
-  } 
- 
-  std::atomic<intptr_t> hook_; 
-#endif 
- 
-  const FnPtr default_fn_; 
-}; 
- 
-#undef ABSL_HAVE_WORKING_ATOMIC_POINTER 
-#undef ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 
- 
-}  // namespace base_internal 
+  // https://developercommunity.visualstudio.com/content/problem/336946/class-with-constexpr-constructor-not-using-static.html
+  explicit constexpr AtomicHook(FnPtr default_fn)
+      : /* hook_(deliberately omitted), */ default_fn_(default_fn) {
+    static_assert(kUninitialized == 0, "here we rely on zero-initialization");
+  }
+#endif
+
+  // Stores the provided function pointer as the value for this hook.
+  //
+  // This is intended to be called once.  Multiple calls are legal only if the
+  // same function pointer is provided for each call.  The store is implemented
+  // as a memory_order_release operation, and read accesses are implemented as
+  // memory_order_acquire.
+  void Store(FnPtr fn) {
+    bool success = DoStore(fn);
+    static_cast<void>(success);
+    assert(success);
+  }
+
+  // Invokes the registered callback.  If no callback has yet been registered, a
+  // default-constructed object of the appropriate type is returned instead.
+  template <typename... CallArgs>
+  ReturnType operator()(CallArgs&&... args) const {
+    return DoLoad()(std::forward<CallArgs>(args)...);
+  }
+
+  // Returns the registered callback, or nullptr if none has been registered.
+  // Useful if client code needs to conditionalize behavior based on whether a
+  // callback was registered.
+  //
+  // Note that atomic_hook.Load()() and atomic_hook() have different semantics:
+  // operator()() will perform a no-op if no callback was registered, while
+  // Load()() will dereference a null function pointer.  Prefer operator()() to
+  // Load()() unless you must conditionalize behavior on whether a hook was
+  // registered.
+  FnPtr Load() const {
+    FnPtr ptr = DoLoad();
+    return (ptr == DummyFunction) ? nullptr : ptr;
+  }
+
+ private:
+  static ReturnType DummyFunction(Args...) {
+    return ReturnType();
+  }
+
+  // Current versions of MSVC (as of September 2017) have a broken
+  // implementation of std::atomic<T*>:  Its constructor attempts to do the
+  // equivalent of a reinterpret_cast in a constexpr context, which is not
+  // allowed.
+  //
+  // This causes an issue when building with LLVM under Windows.  To avoid this,
+  // we use a less-efficient, intptr_t-based implementation on Windows.
+#if ABSL_HAVE_WORKING_ATOMIC_POINTER
+  // Return the stored value, or DummyFunction if no value has been stored.
+  FnPtr DoLoad() const { return hook_.load(std::memory_order_acquire); }
+
+  // Store the given value.  Returns false if a different value was already
+  // stored to this object.
+  bool DoStore(FnPtr fn) {
+    assert(fn);
+    FnPtr expected = default_fn_;
+    const bool store_succeeded = hook_.compare_exchange_strong(
+        expected, fn, std::memory_order_acq_rel, std::memory_order_acquire);
+    const bool same_value_already_stored = (expected == fn);
+    return store_succeeded || same_value_already_stored;
+  }
+
+  std::atomic<FnPtr> hook_;
+#else  // !ABSL_HAVE_WORKING_ATOMIC_POINTER
+  // Use a sentinel value unlikely to be the address of an actual function.
+  static constexpr intptr_t kUninitialized = 0;
+
+  static_assert(sizeof(intptr_t) >= sizeof(FnPtr),
+                "intptr_t can't contain a function pointer");
+
+  FnPtr DoLoad() const {
+    const intptr_t value = hook_.load(std::memory_order_acquire);
+    if (value == kUninitialized) {
+      return default_fn_;
+    }
+    return reinterpret_cast<FnPtr>(value);
+  }
+
+  bool DoStore(FnPtr fn) {
+    assert(fn);
+    const auto value = reinterpret_cast<intptr_t>(fn);
+    intptr_t expected = kUninitialized;
+    const bool store_succeeded = hook_.compare_exchange_strong(
+        expected, value, std::memory_order_acq_rel, std::memory_order_acquire);
+    const bool same_value_already_stored = (expected == value);
+    return store_succeeded || same_value_already_stored;
+  }
+
+  std::atomic<intptr_t> hook_;
+#endif
+
+  const FnPtr default_fn_;
+};
+
+#undef ABSL_HAVE_WORKING_ATOMIC_POINTER
+#undef ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook_test_helper.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook_test_helper.h
index f0ad874075..e600d27f4f 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook_test_helper.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/atomic_hook_test_helper.h
@@ -1,34 +1,34 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_ 
-#define ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_
+#define ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_
+
 #include "y_absl/base/internal/atomic_hook.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace atomic_hook_internal { 
- 
-using VoidF = void (*)(); 
+namespace atomic_hook_internal {
+
+using VoidF = void (*)();
 extern y_absl::base_internal::AtomicHook<VoidF> func;
-extern int default_func_calls; 
-void DefaultFunc(); 
-void RegisterFunc(VoidF func); 
- 
-}  // namespace atomic_hook_internal 
+extern int default_func_calls;
+void DefaultFunc();
+void RegisterFunc(VoidF func);
+
+}  // namespace atomic_hook_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_ 
+
+#endif  // ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.cc
index e2e1865f19..6b43f7c184 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.cc
@@ -1,107 +1,107 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-// The implementation of CycleClock::Frequency. 
-// 
-// NOTE: only i386 and x86_64 have been well tested. 
-// PPC, sparc, alpha, and ia64 are based on 
-//    http://peter.kuscsik.com/wordpress/?p=14 
-// with modifications by m3b.  See also 
-//    https://setisvn.ssl.berkeley.edu/svn/lib/fftw-3.0.1/kernel/cycle.h 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The implementation of CycleClock::Frequency.
+//
+// NOTE: only i386 and x86_64 have been well tested.
+// PPC, sparc, alpha, and ia64 are based on
+//    http://peter.kuscsik.com/wordpress/?p=14
+// with modifications by m3b.  See also
+//    https://setisvn.ssl.berkeley.edu/svn/lib/fftw-3.0.1/kernel/cycle.h
+
 #include "y_absl/base/internal/cycleclock.h"
- 
-#include <atomic> 
-#include <chrono>  // NOLINT(build/c++11) 
- 
+
+#include <atomic>
+#include <chrono>  // NOLINT(build/c++11)
+
 #include "y_absl/base/internal/unscaledcycleclock.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-#if ABSL_USE_UNSCALED_CYCLECLOCK 
- 
-namespace { 
- 
-#ifdef NDEBUG 
-#ifdef ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY 
-// Not debug mode and the UnscaledCycleClock frequency is the CPU 
-// frequency.  Scale the CycleClock to prevent overflow if someone 
-// tries to represent the time as cycles since the Unix epoch. 
-static constexpr int32_t kShift = 1; 
-#else 
-// Not debug mode and the UnscaledCycleClock isn't operating at the 
-// raw CPU frequency. There is no need to do any scaling, so don't 
-// needlessly sacrifice precision. 
-static constexpr int32_t kShift = 0; 
-#endif 
-#else 
-// In debug mode use a different shift to discourage depending on a 
-// particular shift value. 
-static constexpr int32_t kShift = 2; 
-#endif 
- 
-static constexpr double kFrequencyScale = 1.0 / (1 << kShift); 
-static std::atomic<CycleClockSourceFunc> cycle_clock_source; 
- 
-CycleClockSourceFunc LoadCycleClockSource() { 
-  // Optimize for the common case (no callback) by first doing a relaxed load; 
-  // this is significantly faster on non-x86 platforms. 
-  if (cycle_clock_source.load(std::memory_order_relaxed) == nullptr) { 
-    return nullptr; 
-  } 
-  // This corresponds to the store(std::memory_order_release) in 
-  // CycleClockSource::Register, and makes sure that any updates made prior to 
-  // registering the callback are visible to this thread before the callback is 
-  // invoked. 
-  return cycle_clock_source.load(std::memory_order_acquire); 
-} 
- 
-}  // namespace 
- 
-int64_t CycleClock::Now() { 
-  auto fn = LoadCycleClockSource(); 
-  if (fn == nullptr) { 
-    return base_internal::UnscaledCycleClock::Now() >> kShift; 
-  } 
-  return fn() >> kShift; 
-} 
- 
-double CycleClock::Frequency() { 
-  return kFrequencyScale * base_internal::UnscaledCycleClock::Frequency(); 
-} 
- 
-void CycleClockSource::Register(CycleClockSourceFunc source) { 
-  // Corresponds to the load(std::memory_order_acquire) in LoadCycleClockSource. 
-  cycle_clock_source.store(source, std::memory_order_release); 
-} 
- 
-#else 
- 
-int64_t CycleClock::Now() { 
-  return std::chrono::duration_cast<std::chrono::nanoseconds>( 
-             std::chrono::steady_clock::now().time_since_epoch()) 
-      .count(); 
-} 
- 
-double CycleClock::Frequency() { 
-  return 1e9; 
-} 
- 
-#endif 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+namespace {
+
+#ifdef NDEBUG
+#ifdef ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+// Not debug mode and the UnscaledCycleClock frequency is the CPU
+// frequency.  Scale the CycleClock to prevent overflow if someone
+// tries to represent the time as cycles since the Unix epoch.
+static constexpr int32_t kShift = 1;
+#else
+// Not debug mode and the UnscaledCycleClock isn't operating at the
+// raw CPU frequency. There is no need to do any scaling, so don't
+// needlessly sacrifice precision.
+static constexpr int32_t kShift = 0;
+#endif
+#else
+// In debug mode use a different shift to discourage depending on a
+// particular shift value.
+static constexpr int32_t kShift = 2;
+#endif
+
+static constexpr double kFrequencyScale = 1.0 / (1 << kShift);
+static std::atomic<CycleClockSourceFunc> cycle_clock_source;
+
+CycleClockSourceFunc LoadCycleClockSource() {
+  // Optimize for the common case (no callback) by first doing a relaxed load;
+  // this is significantly faster on non-x86 platforms.
+  if (cycle_clock_source.load(std::memory_order_relaxed) == nullptr) {
+    return nullptr;
+  }
+  // This corresponds to the store(std::memory_order_release) in
+  // CycleClockSource::Register, and makes sure that any updates made prior to
+  // registering the callback are visible to this thread before the callback is
+  // invoked.
+  return cycle_clock_source.load(std::memory_order_acquire);
+}
+
+}  // namespace
+
+int64_t CycleClock::Now() {
+  auto fn = LoadCycleClockSource();
+  if (fn == nullptr) {
+    return base_internal::UnscaledCycleClock::Now() >> kShift;
+  }
+  return fn() >> kShift;
+}
+
+double CycleClock::Frequency() {
+  return kFrequencyScale * base_internal::UnscaledCycleClock::Frequency();
+}
+
+void CycleClockSource::Register(CycleClockSourceFunc source) {
+  // Corresponds to the load(std::memory_order_acquire) in LoadCycleClockSource.
+  cycle_clock_source.store(source, std::memory_order_release);
+}
+
+#else
+
+int64_t CycleClock::Now() {
+  return std::chrono::duration_cast<std::chrono::nanoseconds>(
+             std::chrono::steady_clock::now().time_since_epoch())
+      .count();
+}
+
+double CycleClock::Frequency() {
+  return 1e9;
+}
+
+#endif
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.h
index 9279d281d2..389c9093e3 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.h
@@ -1,94 +1,94 @@
-// 
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-// ----------------------------------------------------------------------------- 
-// File: cycleclock.h 
-// ----------------------------------------------------------------------------- 
-// 
-// This header file defines a `CycleClock`, which yields the value and frequency 
-// of a cycle counter that increments at a rate that is approximately constant. 
-// 
-// NOTE: 
-// 
-// The cycle counter frequency is not necessarily related to the core clock 
-// frequency and should not be treated as such. That is, `CycleClock` cycles are 
-// not necessarily "CPU cycles" and code should not rely on that behavior, even 
-// if experimentally observed. 
-// 
-// An arbitrary offset may have been added to the counter at power on. 
-// 
-// On some platforms, the rate and offset of the counter may differ 
-// slightly when read from different CPUs of a multiprocessor. Usually, 
-// we try to ensure that the operating system adjusts values periodically 
-// so that values agree approximately.   If you need stronger guarantees, 
-// consider using alternate interfaces. 
-// 
-// The CPU is not required to maintain the ordering of a cycle counter read 
-// with respect to surrounding instructions. 
- 
-#ifndef ABSL_BASE_INTERNAL_CYCLECLOCK_H_ 
-#define ABSL_BASE_INTERNAL_CYCLECLOCK_H_ 
- 
-#include <cstdint> 
- 
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// -----------------------------------------------------------------------------
+// File: cycleclock.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines a `CycleClock`, which yields the value and frequency
+// of a cycle counter that increments at a rate that is approximately constant.
+//
+// NOTE:
+//
+// The cycle counter frequency is not necessarily related to the core clock
+// frequency and should not be treated as such. That is, `CycleClock` cycles are
+// not necessarily "CPU cycles" and code should not rely on that behavior, even
+// if experimentally observed.
+//
+// An arbitrary offset may have been added to the counter at power on.
+//
+// On some platforms, the rate and offset of the counter may differ
+// slightly when read from different CPUs of a multiprocessor. Usually,
+// we try to ensure that the operating system adjusts values periodically
+// so that values agree approximately.   If you need stronger guarantees,
+// consider using alternate interfaces.
+//
+// The CPU is not required to maintain the ordering of a cycle counter read
+// with respect to surrounding instructions.
+
+#ifndef ABSL_BASE_INTERNAL_CYCLECLOCK_H_
+#define ABSL_BASE_INTERNAL_CYCLECLOCK_H_
+
+#include <cstdint>
+
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// ----------------------------------------------------------------------------- 
-// CycleClock 
-// ----------------------------------------------------------------------------- 
-class CycleClock { 
- public: 
-  // CycleClock::Now() 
-  // 
-  // Returns the value of a cycle counter that counts at a rate that is 
-  // approximately constant. 
-  static int64_t Now(); 
- 
-  // CycleClock::Frequency() 
-  // 
-  // Returns the amount by which `CycleClock::Now()` increases per second. Note 
-  // that this value may not necessarily match the core CPU clock frequency. 
-  static double Frequency(); 
- 
- private: 
-  CycleClock() = delete;  // no instances 
-  CycleClock(const CycleClock&) = delete; 
-  CycleClock& operator=(const CycleClock&) = delete; 
-}; 
- 
-using CycleClockSourceFunc = int64_t (*)(); 
- 
-class CycleClockSource { 
- private: 
-  // CycleClockSource::Register() 
-  // 
-  // Register a function that provides an alternate source for the unscaled CPU 
-  // cycle count value. The source function must be async signal safe, must not 
-  // call CycleClock::Now(), and must have a frequency that matches that of the 
-  // unscaled clock used by CycleClock. A nullptr value resets CycleClock to use 
-  // the default source. 
-  static void Register(CycleClockSourceFunc source); 
-}; 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+// -----------------------------------------------------------------------------
+// CycleClock
+// -----------------------------------------------------------------------------
+class CycleClock {
+ public:
+  // CycleClock::Now()
+  //
+  // Returns the value of a cycle counter that counts at a rate that is
+  // approximately constant.
+  static int64_t Now();
+
+  // CycleClock::Frequency()
+  //
+  // Returns the amount by which `CycleClock::Now()` increases per second. Note
+  // that this value may not necessarily match the core CPU clock frequency.
+  static double Frequency();
+
+ private:
+  CycleClock() = delete;  // no instances
+  CycleClock(const CycleClock&) = delete;
+  CycleClock& operator=(const CycleClock&) = delete;
+};
+
+using CycleClockSourceFunc = int64_t (*)();
+
+class CycleClockSource {
+ private:
+  // CycleClockSource::Register()
+  //
+  // Register a function that provides an alternate source for the unscaled CPU
+  // cycle count value. The source function must be async signal safe, must not
+  // call CycleClock::Now(), and must have a frequency that matches that of the
+  // unscaled clock used by CycleClock. A nullptr value resets CycleClock to use
+  // the default source.
+  static void Register(CycleClockSourceFunc source);
+};
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_CYCLECLOCK_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_CYCLECLOCK_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/direct_mmap.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/direct_mmap.h
index dc262dabda..82be9f94ab 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/direct_mmap.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/direct_mmap.h
@@ -1,169 +1,169 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// Functions for directly invoking mmap() via syscall, avoiding the case where 
-// mmap() has been locally overridden. 
- 
-#ifndef ABSL_BASE_INTERNAL_DIRECT_MMAP_H_ 
-#define ABSL_BASE_INTERNAL_DIRECT_MMAP_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Functions for directly invoking mmap() via syscall, avoiding the case where
+// mmap() has been locally overridden.
+
+#ifndef ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
+#define ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
+
 #include "y_absl/base/config.h"
- 
-#if ABSL_HAVE_MMAP 
- 
-#include <sys/mman.h> 
- 
-#ifdef __linux__ 
- 
-#include <sys/types.h> 
-#ifdef __BIONIC__ 
-#include <sys/syscall.h> 
-#else 
-#include <syscall.h> 
-#endif 
- 
-#include <linux/unistd.h> 
-#include <unistd.h> 
-#include <cerrno> 
-#include <cstdarg> 
-#include <cstdint> 
- 
-#ifdef __mips__ 
-// Include definitions of the ABI currently in use. 
-#ifdef __BIONIC__ 
-// Android doesn't have sgidefs.h, but does have asm/sgidefs.h, which has the 
-// definitions we need. 
-#include <asm/sgidefs.h> 
-#else 
-#include <sgidefs.h> 
-#endif  // __BIONIC__ 
-#endif  // __mips__ 
- 
-// SYS_mmap and SYS_munmap are not defined in Android. 
-#ifdef __BIONIC__ 
-extern "C" void* __mmap2(void*, size_t, int, int, int, size_t); 
-#if defined(__NR_mmap) && !defined(SYS_mmap) 
-#define SYS_mmap __NR_mmap 
-#endif 
-#ifndef SYS_munmap 
-#define SYS_munmap __NR_munmap 
-#endif 
-#endif  // __BIONIC__ 
- 
+
+#if ABSL_HAVE_MMAP
+
+#include <sys/mman.h>
+
+#ifdef __linux__
+
+#include <sys/types.h>
+#ifdef __BIONIC__
+#include <sys/syscall.h>
+#else
+#include <syscall.h>
+#endif
+
+#include <linux/unistd.h>
+#include <unistd.h>
+#include <cerrno>
+#include <cstdarg>
+#include <cstdint>
+
+#ifdef __mips__
+// Include definitions of the ABI currently in use.
+#ifdef __BIONIC__
+// Android doesn't have sgidefs.h, but does have asm/sgidefs.h, which has the
+// definitions we need.
+#include <asm/sgidefs.h>
+#else
+#include <sgidefs.h>
+#endif  // __BIONIC__
+#endif  // __mips__
+
+// SYS_mmap and SYS_munmap are not defined in Android.
+#ifdef __BIONIC__
+extern "C" void* __mmap2(void*, size_t, int, int, int, size_t);
+#if defined(__NR_mmap) && !defined(SYS_mmap)
+#define SYS_mmap __NR_mmap
+#endif
+#ifndef SYS_munmap
+#define SYS_munmap __NR_munmap
+#endif
+#endif  // __BIONIC__
+
 #if defined(__NR_mmap2) && !defined(SYS_mmap2)
 #define SYS_mmap2 __NR_mmap2
 #endif
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// Platform specific logic extracted from 
-// https://chromium.googlesource.com/linux-syscall-support/+/master/linux_syscall_support.h 
-inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd, 
-                        off64_t offset) noexcept { 
-#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \ 
+namespace base_internal {
+
+// Platform specific logic extracted from
+// https://chromium.googlesource.com/linux-syscall-support/+/master/linux_syscall_support.h
+inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
+                        off64_t offset) noexcept {
+#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \
     defined(__m68k__) || defined(__sh__) ||                                  \
     (defined(__hppa__) && !defined(__LP64__)) ||                             \
-    (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                   \ 
-    (defined(__PPC__) && !defined(__PPC64__)) ||                             \ 
+    (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                   \
+    (defined(__PPC__) && !defined(__PPC64__)) ||                             \
     (defined(__riscv) && __riscv_xlen == 32) ||                              \
     (defined(__s390__) && !defined(__s390x__)) ||                            \
     (defined(__sparc__) && !defined(__arch64__))
-  // On these architectures, implement mmap with mmap2. 
-  static int pagesize = 0; 
-  if (pagesize == 0) { 
-#if defined(__wasm__) || defined(__asmjs__) 
-    pagesize = getpagesize(); 
-#else 
-    pagesize = sysconf(_SC_PAGESIZE); 
-#endif 
-  } 
-  if (offset < 0 || offset % pagesize != 0) { 
-    errno = EINVAL; 
-    return MAP_FAILED; 
-  } 
-#ifdef __BIONIC__ 
-  // SYS_mmap2 has problems on Android API level <= 16. 
-  // Workaround by invoking __mmap2() instead. 
-  return __mmap2(start, length, prot, flags, fd, offset / pagesize); 
-#else 
-  return reinterpret_cast<void*>( 
-      syscall(SYS_mmap2, start, length, prot, flags, fd, 
-              static_cast<off_t>(offset / pagesize))); 
-#endif 
-#elif defined(__s390x__) 
-  // On s390x, mmap() arguments are passed in memory. 
-  unsigned long buf[6] = {reinterpret_cast<unsigned long>(start),  // NOLINT 
-                          static_cast<unsigned long>(length),      // NOLINT 
-                          static_cast<unsigned long>(prot),        // NOLINT 
-                          static_cast<unsigned long>(flags),       // NOLINT 
-                          static_cast<unsigned long>(fd),          // NOLINT 
-                          static_cast<unsigned long>(offset)};     // NOLINT 
-  return reinterpret_cast<void*>(syscall(SYS_mmap, buf)); 
-#elif defined(__x86_64__) 
-// The x32 ABI has 32 bit longs, but the syscall interface is 64 bit. 
-// We need to explicitly cast to an unsigned 64 bit type to avoid implicit 
-// sign extension.  We can't cast pointers directly because those are 
-// 32 bits, and gcc will dump ugly warnings about casting from a pointer 
-// to an integer of a different size. We also need to make sure __off64_t 
-// isn't truncated to 32-bits under x32. 
-#define MMAP_SYSCALL_ARG(x) ((uint64_t)(uintptr_t)(x)) 
-  return reinterpret_cast<void*>( 
-      syscall(SYS_mmap, MMAP_SYSCALL_ARG(start), MMAP_SYSCALL_ARG(length), 
-              MMAP_SYSCALL_ARG(prot), MMAP_SYSCALL_ARG(flags), 
-              MMAP_SYSCALL_ARG(fd), static_cast<uint64_t>(offset))); 
-#undef MMAP_SYSCALL_ARG 
-#else  // Remaining 64-bit aritectures. 
-  static_assert(sizeof(unsigned long) == 8, "Platform is not 64-bit"); 
-  return reinterpret_cast<void*>( 
-      syscall(SYS_mmap, start, length, prot, flags, fd, offset)); 
-#endif 
-} 
- 
-inline int DirectMunmap(void* start, size_t length) { 
-  return static_cast<int>(syscall(SYS_munmap, start, length)); 
-} 
- 
-}  // namespace base_internal 
+  // On these architectures, implement mmap with mmap2.
+  static int pagesize = 0;
+  if (pagesize == 0) {
+#if defined(__wasm__) || defined(__asmjs__)
+    pagesize = getpagesize();
+#else
+    pagesize = sysconf(_SC_PAGESIZE);
+#endif
+  }
+  if (offset < 0 || offset % pagesize != 0) {
+    errno = EINVAL;
+    return MAP_FAILED;
+  }
+#ifdef __BIONIC__
+  // SYS_mmap2 has problems on Android API level <= 16.
+  // Workaround by invoking __mmap2() instead.
+  return __mmap2(start, length, prot, flags, fd, offset / pagesize);
+#else
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap2, start, length, prot, flags, fd,
+              static_cast<off_t>(offset / pagesize)));
+#endif
+#elif defined(__s390x__)
+  // On s390x, mmap() arguments are passed in memory.
+  unsigned long buf[6] = {reinterpret_cast<unsigned long>(start),  // NOLINT
+                          static_cast<unsigned long>(length),      // NOLINT
+                          static_cast<unsigned long>(prot),        // NOLINT
+                          static_cast<unsigned long>(flags),       // NOLINT
+                          static_cast<unsigned long>(fd),          // NOLINT
+                          static_cast<unsigned long>(offset)};     // NOLINT
+  return reinterpret_cast<void*>(syscall(SYS_mmap, buf));
+#elif defined(__x86_64__)
+// The x32 ABI has 32 bit longs, but the syscall interface is 64 bit.
+// We need to explicitly cast to an unsigned 64 bit type to avoid implicit
+// sign extension.  We can't cast pointers directly because those are
+// 32 bits, and gcc will dump ugly warnings about casting from a pointer
+// to an integer of a different size. We also need to make sure __off64_t
+// isn't truncated to 32-bits under x32.
+#define MMAP_SYSCALL_ARG(x) ((uint64_t)(uintptr_t)(x))
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap, MMAP_SYSCALL_ARG(start), MMAP_SYSCALL_ARG(length),
+              MMAP_SYSCALL_ARG(prot), MMAP_SYSCALL_ARG(flags),
+              MMAP_SYSCALL_ARG(fd), static_cast<uint64_t>(offset)));
+#undef MMAP_SYSCALL_ARG
+#else  // Remaining 64-bit aritectures.
+  static_assert(sizeof(unsigned long) == 8, "Platform is not 64-bit");
+  return reinterpret_cast<void*>(
+      syscall(SYS_mmap, start, length, prot, flags, fd, offset));
+#endif
+}
+
+inline int DirectMunmap(void* start, size_t length) {
+  return static_cast<int>(syscall(SYS_munmap, start, length));
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#else  // !__linux__ 
- 
-// For non-linux platforms where we have mmap, just dispatch directly to the 
-// actual mmap()/munmap() methods. 
- 
+
+#else  // !__linux__
+
+// For non-linux platforms where we have mmap, just dispatch directly to the
+// actual mmap()/munmap() methods.
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd, 
-                        off_t offset) { 
-  return mmap(start, length, prot, flags, fd, offset); 
-} 
- 
-inline int DirectMunmap(void* start, size_t length) { 
-  return munmap(start, length); 
-} 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
+                        off_t offset) {
+  return mmap(start, length, prot, flags, fd, offset);
+}
+
+inline int DirectMunmap(void* start, size_t length) {
+  return munmap(start, length);
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // __linux__ 
- 
-#endif  // ABSL_HAVE_MMAP 
- 
-#endif  // ABSL_BASE_INTERNAL_DIRECT_MMAP_H_ 
+
+#endif  // __linux__
+
+#endif  // ABSL_HAVE_MMAP
+
+#endif  // ABSL_BASE_INTERNAL_DIRECT_MMAP_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/endian.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/endian.h
index bf69c47ae4..0f7adb8bf6 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/endian.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/endian.h
@@ -1,179 +1,179 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_ENDIAN_H_ 
-#define ABSL_BASE_INTERNAL_ENDIAN_H_ 
- 
-// The following guarantees declaration of the byte swap functions 
-#ifdef _MSC_VER 
-#include <stdlib.h>  // NOLINT(build/include) 
-#elif defined(__FreeBSD__) 
-#include <sys/endian.h> 
-#elif defined(__GLIBC__) 
-#include <byteswap.h>  // IWYU pragma: export 
-#endif 
- 
-#include <cstdint> 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_ENDIAN_H_
+#define ABSL_BASE_INTERNAL_ENDIAN_H_
+
+// The following guarantees declaration of the byte swap functions
+#ifdef _MSC_VER
+#include <stdlib.h>  // NOLINT(build/include)
+#elif defined(__FreeBSD__)
+#include <sys/endian.h>
+#elif defined(__GLIBC__)
+#include <byteswap.h>  // IWYU pragma: export
+#endif
+
+#include <cstdint>
 #include "y_absl/base/casts.h"
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/unaligned_access.h"
 #include "y_absl/base/port.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
- 
-// Use compiler byte-swapping intrinsics if they are available.  32-bit 
-// and 64-bit versions are available in Clang and GCC as of GCC 4.3.0. 
-// The 16-bit version is available in Clang and GCC only as of GCC 4.8.0. 
-// For simplicity, we enable them all only for GCC 4.8.0 or later. 
-#if defined(__clang__) || \ 
-    (defined(__GNUC__) && \ 
-     ((__GNUC__ == 4 && __GNUC_MINOR__ >= 8) || __GNUC__ >= 5)) 
-inline uint64_t gbswap_64(uint64_t host_int) { 
-  return __builtin_bswap64(host_int); 
-} 
-inline uint32_t gbswap_32(uint32_t host_int) { 
-  return __builtin_bswap32(host_int); 
-} 
-inline uint16_t gbswap_16(uint16_t host_int) { 
-  return __builtin_bswap16(host_int); 
-} 
- 
-#elif defined(_MSC_VER) 
-inline uint64_t gbswap_64(uint64_t host_int) { 
-  return _byteswap_uint64(host_int); 
-} 
-inline uint32_t gbswap_32(uint32_t host_int) { 
-  return _byteswap_ulong(host_int); 
-} 
-inline uint16_t gbswap_16(uint16_t host_int) { 
-  return _byteswap_ushort(host_int); 
-} 
- 
-#else 
-inline uint64_t gbswap_64(uint64_t host_int) { 
-#if defined(__GNUC__) && defined(__x86_64__) && !defined(__APPLE__) 
-  // Adapted from /usr/include/byteswap.h.  Not available on Mac. 
-  if (__builtin_constant_p(host_int)) { 
-    return __bswap_constant_64(host_int); 
-  } else { 
-    uint64_t result; 
-    __asm__("bswap %0" : "=r"(result) : "0"(host_int)); 
-    return result; 
-  } 
-#elif defined(__GLIBC__) 
-  return bswap_64(host_int); 
-#else 
-  return (((host_int & uint64_t{0xFF}) << 56) | 
-          ((host_int & uint64_t{0xFF00}) << 40) | 
-          ((host_int & uint64_t{0xFF0000}) << 24) | 
-          ((host_int & uint64_t{0xFF000000}) << 8) | 
-          ((host_int & uint64_t{0xFF00000000}) >> 8) | 
-          ((host_int & uint64_t{0xFF0000000000}) >> 24) | 
-          ((host_int & uint64_t{0xFF000000000000}) >> 40) | 
-          ((host_int & uint64_t{0xFF00000000000000}) >> 56)); 
-#endif  // bswap_64 
-} 
- 
-inline uint32_t gbswap_32(uint32_t host_int) { 
-#if defined(__GLIBC__) 
-  return bswap_32(host_int); 
-#else 
-  return (((host_int & uint32_t{0xFF}) << 24) | 
-          ((host_int & uint32_t{0xFF00}) << 8) | 
-          ((host_int & uint32_t{0xFF0000}) >> 8) | 
-          ((host_int & uint32_t{0xFF000000}) >> 24)); 
-#endif 
-} 
- 
-inline uint16_t gbswap_16(uint16_t host_int) { 
-#if defined(__GLIBC__) 
-  return bswap_16(host_int); 
-#else 
-  return (((host_int & uint16_t{0xFF}) << 8) | 
-          ((host_int & uint16_t{0xFF00}) >> 8)); 
-#endif 
-} 
- 
-#endif  // intrinsics available 
- 
-#ifdef ABSL_IS_LITTLE_ENDIAN 
- 
-// Definitions for ntohl etc. that don't require us to include 
-// netinet/in.h. We wrap gbswap_32 and gbswap_16 in functions rather 
-// than just #defining them because in debug mode, gcc doesn't 
-// correctly handle the (rather involved) definitions of bswap_32. 
-// gcc guarantees that inline functions are as fast as macros, so 
-// this isn't a performance hit. 
-inline uint16_t ghtons(uint16_t x) { return gbswap_16(x); } 
-inline uint32_t ghtonl(uint32_t x) { return gbswap_32(x); } 
-inline uint64_t ghtonll(uint64_t x) { return gbswap_64(x); } 
- 
-#elif defined ABSL_IS_BIG_ENDIAN 
- 
-// These definitions are simpler on big-endian machines 
-// These are functions instead of macros to avoid self-assignment warnings 
-// on calls such as "i = ghtnol(i);".  This also provides type checking. 
-inline uint16_t ghtons(uint16_t x) { return x; } 
-inline uint32_t ghtonl(uint32_t x) { return x; } 
-inline uint64_t ghtonll(uint64_t x) { return x; } 
- 
-#else 
-#error \ 
-    "Unsupported byte order: Either ABSL_IS_BIG_ENDIAN or " \ 
-       "ABSL_IS_LITTLE_ENDIAN must be defined" 
-#endif  // byte order 
- 
-inline uint16_t gntohs(uint16_t x) { return ghtons(x); } 
-inline uint32_t gntohl(uint32_t x) { return ghtonl(x); } 
-inline uint64_t gntohll(uint64_t x) { return ghtonll(x); } 
- 
-// Utilities to convert numbers between the current hosts's native byte 
-// order and little-endian byte order 
-// 
-// Load/Store methods are alignment safe 
-namespace little_endian { 
-// Conversion functions. 
-#ifdef ABSL_IS_LITTLE_ENDIAN 
- 
-inline uint16_t FromHost16(uint16_t x) { return x; } 
-inline uint16_t ToHost16(uint16_t x) { return x; } 
- 
-inline uint32_t FromHost32(uint32_t x) { return x; } 
-inline uint32_t ToHost32(uint32_t x) { return x; } 
- 
-inline uint64_t FromHost64(uint64_t x) { return x; } 
-inline uint64_t ToHost64(uint64_t x) { return x; } 
- 
-inline constexpr bool IsLittleEndian() { return true; } 
- 
-#elif defined ABSL_IS_BIG_ENDIAN 
- 
-inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); } 
-inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); } 
- 
-inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); } 
-inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); } 
- 
-inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); } 
-inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); } 
- 
-inline constexpr bool IsLittleEndian() { return false; } 
- 
-#endif /* ENDIAN */ 
- 
+
+// Use compiler byte-swapping intrinsics if they are available.  32-bit
+// and 64-bit versions are available in Clang and GCC as of GCC 4.3.0.
+// The 16-bit version is available in Clang and GCC only as of GCC 4.8.0.
+// For simplicity, we enable them all only for GCC 4.8.0 or later.
+#if defined(__clang__) || \
+    (defined(__GNUC__) && \
+     ((__GNUC__ == 4 && __GNUC_MINOR__ >= 8) || __GNUC__ >= 5))
+inline uint64_t gbswap_64(uint64_t host_int) {
+  return __builtin_bswap64(host_int);
+}
+inline uint32_t gbswap_32(uint32_t host_int) {
+  return __builtin_bswap32(host_int);
+}
+inline uint16_t gbswap_16(uint16_t host_int) {
+  return __builtin_bswap16(host_int);
+}
+
+#elif defined(_MSC_VER)
+inline uint64_t gbswap_64(uint64_t host_int) {
+  return _byteswap_uint64(host_int);
+}
+inline uint32_t gbswap_32(uint32_t host_int) {
+  return _byteswap_ulong(host_int);
+}
+inline uint16_t gbswap_16(uint16_t host_int) {
+  return _byteswap_ushort(host_int);
+}
+
+#else
+inline uint64_t gbswap_64(uint64_t host_int) {
+#if defined(__GNUC__) && defined(__x86_64__) && !defined(__APPLE__)
+  // Adapted from /usr/include/byteswap.h.  Not available on Mac.
+  if (__builtin_constant_p(host_int)) {
+    return __bswap_constant_64(host_int);
+  } else {
+    uint64_t result;
+    __asm__("bswap %0" : "=r"(result) : "0"(host_int));
+    return result;
+  }
+#elif defined(__GLIBC__)
+  return bswap_64(host_int);
+#else
+  return (((host_int & uint64_t{0xFF}) << 56) |
+          ((host_int & uint64_t{0xFF00}) << 40) |
+          ((host_int & uint64_t{0xFF0000}) << 24) |
+          ((host_int & uint64_t{0xFF000000}) << 8) |
+          ((host_int & uint64_t{0xFF00000000}) >> 8) |
+          ((host_int & uint64_t{0xFF0000000000}) >> 24) |
+          ((host_int & uint64_t{0xFF000000000000}) >> 40) |
+          ((host_int & uint64_t{0xFF00000000000000}) >> 56));
+#endif  // bswap_64
+}
+
+inline uint32_t gbswap_32(uint32_t host_int) {
+#if defined(__GLIBC__)
+  return bswap_32(host_int);
+#else
+  return (((host_int & uint32_t{0xFF}) << 24) |
+          ((host_int & uint32_t{0xFF00}) << 8) |
+          ((host_int & uint32_t{0xFF0000}) >> 8) |
+          ((host_int & uint32_t{0xFF000000}) >> 24));
+#endif
+}
+
+inline uint16_t gbswap_16(uint16_t host_int) {
+#if defined(__GLIBC__)
+  return bswap_16(host_int);
+#else
+  return (((host_int & uint16_t{0xFF}) << 8) |
+          ((host_int & uint16_t{0xFF00}) >> 8));
+#endif
+}
+
+#endif  // intrinsics available
+
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+// Definitions for ntohl etc. that don't require us to include
+// netinet/in.h. We wrap gbswap_32 and gbswap_16 in functions rather
+// than just #defining them because in debug mode, gcc doesn't
+// correctly handle the (rather involved) definitions of bswap_32.
+// gcc guarantees that inline functions are as fast as macros, so
+// this isn't a performance hit.
+inline uint16_t ghtons(uint16_t x) { return gbswap_16(x); }
+inline uint32_t ghtonl(uint32_t x) { return gbswap_32(x); }
+inline uint64_t ghtonll(uint64_t x) { return gbswap_64(x); }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+// These definitions are simpler on big-endian machines
+// These are functions instead of macros to avoid self-assignment warnings
+// on calls such as "i = ghtnol(i);".  This also provides type checking.
+inline uint16_t ghtons(uint16_t x) { return x; }
+inline uint32_t ghtonl(uint32_t x) { return x; }
+inline uint64_t ghtonll(uint64_t x) { return x; }
+
+#else
+#error \
+    "Unsupported byte order: Either ABSL_IS_BIG_ENDIAN or " \
+       "ABSL_IS_LITTLE_ENDIAN must be defined"
+#endif  // byte order
+
+inline uint16_t gntohs(uint16_t x) { return ghtons(x); }
+inline uint32_t gntohl(uint32_t x) { return ghtonl(x); }
+inline uint64_t gntohll(uint64_t x) { return ghtonll(x); }
+
+// Utilities to convert numbers between the current hosts's native byte
+// order and little-endian byte order
+//
+// Load/Store methods are alignment safe
+namespace little_endian {
+// Conversion functions.
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return x; }
+inline uint16_t ToHost16(uint16_t x) { return x; }
+
+inline uint32_t FromHost32(uint32_t x) { return x; }
+inline uint32_t ToHost32(uint32_t x) { return x; }
+
+inline uint64_t FromHost64(uint64_t x) { return x; }
+inline uint64_t ToHost64(uint64_t x) { return x; }
+
+inline constexpr bool IsLittleEndian() { return true; }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); }
+inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); }
+
+inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); }
+inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); }
+
+inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); }
+inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); }
+
+inline constexpr bool IsLittleEndian() { return false; }
+
+#endif /* ENDIAN */
+
 inline uint8_t FromHost(uint8_t x) { return x; }
 inline uint16_t FromHost(uint16_t x) { return FromHost16(x); }
 inline uint32_t FromHost(uint32_t x) { return FromHost32(x); }
@@ -204,66 +204,66 @@ inline int64_t ToHost(int64_t x) {
   return bit_cast<int64_t>(ToHost64(bit_cast<uint64_t>(x)));
 }
 
-// Functions to do unaligned loads and stores in little-endian order. 
-inline uint16_t Load16(const void *p) { 
-  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p)); 
-} 
- 
-inline void Store16(void *p, uint16_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v)); 
-} 
- 
-inline uint32_t Load32(const void *p) { 
-  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p)); 
-} 
- 
-inline void Store32(void *p, uint32_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v)); 
-} 
- 
-inline uint64_t Load64(const void *p) { 
-  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p)); 
-} 
- 
-inline void Store64(void *p, uint64_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v)); 
-} 
- 
-}  // namespace little_endian 
- 
-// Utilities to convert numbers between the current hosts's native byte 
-// order and big-endian byte order (same as network byte order) 
-// 
-// Load/Store methods are alignment safe 
-namespace big_endian { 
-#ifdef ABSL_IS_LITTLE_ENDIAN 
- 
-inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); } 
-inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); } 
- 
-inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); } 
-inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); } 
- 
-inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); } 
-inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); } 
- 
-inline constexpr bool IsLittleEndian() { return true; } 
- 
-#elif defined ABSL_IS_BIG_ENDIAN 
- 
-inline uint16_t FromHost16(uint16_t x) { return x; } 
-inline uint16_t ToHost16(uint16_t x) { return x; } 
- 
-inline uint32_t FromHost32(uint32_t x) { return x; } 
-inline uint32_t ToHost32(uint32_t x) { return x; } 
- 
-inline uint64_t FromHost64(uint64_t x) { return x; } 
-inline uint64_t ToHost64(uint64_t x) { return x; } 
- 
-inline constexpr bool IsLittleEndian() { return false; } 
- 
-#endif /* ENDIAN */ 
- 
+// Functions to do unaligned loads and stores in little-endian order.
+inline uint16_t Load16(const void *p) {
+  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p));
+}
+
+inline void Store16(void *p, uint16_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v));
+}
+
+inline uint32_t Load32(const void *p) {
+  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p));
+}
+
+inline void Store32(void *p, uint32_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v));
+}
+
+inline uint64_t Load64(const void *p) {
+  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p));
+}
+
+inline void Store64(void *p, uint64_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v));
+}
+
+}  // namespace little_endian
+
+// Utilities to convert numbers between the current hosts's native byte
+// order and big-endian byte order (same as network byte order)
+//
+// Load/Store methods are alignment safe
+namespace big_endian {
+#ifdef ABSL_IS_LITTLE_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return gbswap_16(x); }
+inline uint16_t ToHost16(uint16_t x) { return gbswap_16(x); }
+
+inline uint32_t FromHost32(uint32_t x) { return gbswap_32(x); }
+inline uint32_t ToHost32(uint32_t x) { return gbswap_32(x); }
+
+inline uint64_t FromHost64(uint64_t x) { return gbswap_64(x); }
+inline uint64_t ToHost64(uint64_t x) { return gbswap_64(x); }
+
+inline constexpr bool IsLittleEndian() { return true; }
+
+#elif defined ABSL_IS_BIG_ENDIAN
+
+inline uint16_t FromHost16(uint16_t x) { return x; }
+inline uint16_t ToHost16(uint16_t x) { return x; }
+
+inline uint32_t FromHost32(uint32_t x) { return x; }
+inline uint32_t ToHost32(uint32_t x) { return x; }
+
+inline uint64_t FromHost64(uint64_t x) { return x; }
+inline uint64_t ToHost64(uint64_t x) { return x; }
+
+inline constexpr bool IsLittleEndian() { return false; }
+
+#endif /* ENDIAN */
+
 inline uint8_t FromHost(uint8_t x) { return x; }
 inline uint16_t FromHost(uint16_t x) { return FromHost16(x); }
 inline uint32_t FromHost(uint32_t x) { return FromHost32(x); }
@@ -294,34 +294,34 @@ inline int64_t ToHost(int64_t x) {
   return bit_cast<int64_t>(ToHost64(bit_cast<uint64_t>(x)));
 }
 
-// Functions to do unaligned loads and stores in big-endian order. 
-inline uint16_t Load16(const void *p) { 
-  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p)); 
-} 
- 
-inline void Store16(void *p, uint16_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v)); 
-} 
- 
-inline uint32_t Load32(const void *p) { 
-  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p)); 
-} 
- 
-inline void Store32(void *p, uint32_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v)); 
-} 
- 
-inline uint64_t Load64(const void *p) { 
-  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p)); 
-} 
- 
-inline void Store64(void *p, uint64_t v) { 
-  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v)); 
-} 
- 
-}  // namespace big_endian 
- 
+// Functions to do unaligned loads and stores in big-endian order.
+inline uint16_t Load16(const void *p) {
+  return ToHost16(ABSL_INTERNAL_UNALIGNED_LOAD16(p));
+}
+
+inline void Store16(void *p, uint16_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE16(p, FromHost16(v));
+}
+
+inline uint32_t Load32(const void *p) {
+  return ToHost32(ABSL_INTERNAL_UNALIGNED_LOAD32(p));
+}
+
+inline void Store32(void *p, uint32_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE32(p, FromHost32(v));
+}
+
+inline uint64_t Load64(const void *p) {
+  return ToHost64(ABSL_INTERNAL_UNALIGNED_LOAD64(p));
+}
+
+inline void Store64(void *p, uint64_t v) {
+  ABSL_INTERNAL_UNALIGNED_STORE64(p, FromHost64(v));
+}
+
+}  // namespace big_endian
+
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_ENDIAN_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_ENDIAN_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_safety_testing.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_safety_testing.h
index 5d08880e00..3009f17875 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_safety_testing.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_safety_testing.h
@@ -1,541 +1,541 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-// Utilities for testing exception-safety 
- 
-#ifndef ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_ 
-#define ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Utilities for testing exception-safety
+
+#ifndef ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
+#define ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
+
 #include "y_absl/base/config.h"
- 
-#ifdef ABSL_HAVE_EXCEPTIONS 
- 
-#include <cstddef> 
-#include <cstdint> 
-#include <functional> 
-#include <initializer_list> 
-#include <iosfwd> 
+
+#ifdef ABSL_HAVE_EXCEPTIONS
+
+#include <cstddef>
+#include <cstdint>
+#include <functional>
+#include <initializer_list>
+#include <iosfwd>
 #include <util/generic/string.h>
-#include <tuple> 
-#include <unordered_map> 
- 
-#include "gtest/gtest.h" 
+#include <tuple>
+#include <unordered_map>
+
+#include "gtest/gtest.h"
 #include "y_absl/base/internal/pretty_function.h"
 #include "y_absl/memory/memory.h"
 #include "y_absl/meta/type_traits.h"
 #include "y_absl/strings/string_view.h"
 #include "y_absl/strings/substitute.h"
 #include "y_absl/utility/utility.h"
- 
-namespace testing { 
- 
-enum class TypeSpec; 
-enum class AllocSpec; 
- 
-constexpr TypeSpec operator|(TypeSpec a, TypeSpec b) { 
+
+namespace testing {
+
+enum class TypeSpec;
+enum class AllocSpec;
+
+constexpr TypeSpec operator|(TypeSpec a, TypeSpec b) {
   using T = y_absl::underlying_type_t<TypeSpec>;
-  return static_cast<TypeSpec>(static_cast<T>(a) | static_cast<T>(b)); 
-} 
- 
-constexpr TypeSpec operator&(TypeSpec a, TypeSpec b) { 
+  return static_cast<TypeSpec>(static_cast<T>(a) | static_cast<T>(b));
+}
+
+constexpr TypeSpec operator&(TypeSpec a, TypeSpec b) {
   using T = y_absl::underlying_type_t<TypeSpec>;
-  return static_cast<TypeSpec>(static_cast<T>(a) & static_cast<T>(b)); 
-} 
- 
-constexpr AllocSpec operator|(AllocSpec a, AllocSpec b) { 
+  return static_cast<TypeSpec>(static_cast<T>(a) & static_cast<T>(b));
+}
+
+constexpr AllocSpec operator|(AllocSpec a, AllocSpec b) {
   using T = y_absl::underlying_type_t<AllocSpec>;
-  return static_cast<AllocSpec>(static_cast<T>(a) | static_cast<T>(b)); 
-} 
- 
-constexpr AllocSpec operator&(AllocSpec a, AllocSpec b) { 
+  return static_cast<AllocSpec>(static_cast<T>(a) | static_cast<T>(b));
+}
+
+constexpr AllocSpec operator&(AllocSpec a, AllocSpec b) {
   using T = y_absl::underlying_type_t<AllocSpec>;
-  return static_cast<AllocSpec>(static_cast<T>(a) & static_cast<T>(b)); 
-} 
- 
-namespace exceptions_internal { 
- 
+  return static_cast<AllocSpec>(static_cast<T>(a) & static_cast<T>(b));
+}
+
+namespace exceptions_internal {
+
 TString GetSpecString(TypeSpec);
 TString GetSpecString(AllocSpec);
- 
-struct NoThrowTag {}; 
-struct StrongGuaranteeTagType {}; 
- 
-// A simple exception class.  We throw this so that test code can catch 
-// exceptions specifically thrown by ThrowingValue. 
-class TestException { 
- public: 
+
+struct NoThrowTag {};
+struct StrongGuaranteeTagType {};
+
+// A simple exception class.  We throw this so that test code can catch
+// exceptions specifically thrown by ThrowingValue.
+class TestException {
+ public:
   explicit TestException(y_absl::string_view msg) : msg_(msg) {}
-  virtual ~TestException() {} 
-  virtual const char* what() const noexcept { return msg_.c_str(); } 
- 
- private: 
+  virtual ~TestException() {}
+  virtual const char* what() const noexcept { return msg_.c_str(); }
+
+ private:
   TString msg_;
-}; 
- 
-// TestBadAllocException exists because allocation functions must throw an 
-// exception which can be caught by a handler of std::bad_alloc.  We use a child 
-// class of std::bad_alloc so we can customise the error message, and also 
-// derive from TestException so we don't accidentally end up catching an actual 
-// bad_alloc exception in TestExceptionSafety. 
-class TestBadAllocException : public std::bad_alloc, public TestException { 
- public: 
+};
+
+// TestBadAllocException exists because allocation functions must throw an
+// exception which can be caught by a handler of std::bad_alloc.  We use a child
+// class of std::bad_alloc so we can customise the error message, and also
+// derive from TestException so we don't accidentally end up catching an actual
+// bad_alloc exception in TestExceptionSafety.
+class TestBadAllocException : public std::bad_alloc, public TestException {
+ public:
   explicit TestBadAllocException(y_absl::string_view msg) : TestException(msg) {}
-  using TestException::what; 
-}; 
- 
-extern int countdown; 
- 
-// Allows the countdown variable to be set manually (defaulting to the initial 
-// value of 0) 
-inline void SetCountdown(int i = 0) { countdown = i; } 
-// Sets the countdown to the terminal value -1 
-inline void UnsetCountdown() { SetCountdown(-1); } 
- 
+  using TestException::what;
+};
+
+extern int countdown;
+
+// Allows the countdown variable to be set manually (defaulting to the initial
+// value of 0)
+inline void SetCountdown(int i = 0) { countdown = i; }
+// Sets the countdown to the terminal value -1
+inline void UnsetCountdown() { SetCountdown(-1); }
+
 void MaybeThrow(y_absl::string_view msg, bool throw_bad_alloc = false);
- 
-testing::AssertionResult FailureMessage(const TestException& e, 
-                                        int countdown) noexcept; 
- 
-struct TrackedAddress { 
-  bool is_alive; 
+
+testing::AssertionResult FailureMessage(const TestException& e,
+                                        int countdown) noexcept;
+
+struct TrackedAddress {
+  bool is_alive;
   TString description;
-}; 
- 
-// Inspects the constructions and destructions of anything inheriting from 
-// TrackedObject. This allows us to safely "leak" TrackedObjects, as 
-// ConstructorTracker will destroy everything left over in its destructor. 
-class ConstructorTracker { 
- public: 
-  explicit ConstructorTracker(int count) : countdown_(count) { 
-    assert(current_tracker_instance_ == nullptr); 
-    current_tracker_instance_ = this; 
-  } 
- 
-  ~ConstructorTracker() { 
-    assert(current_tracker_instance_ == this); 
-    current_tracker_instance_ = nullptr; 
- 
-    for (auto& it : address_map_) { 
-      void* address = it.first; 
-      TrackedAddress& tracked_address = it.second; 
-      if (tracked_address.is_alive) { 
-        ADD_FAILURE() << ErrorMessage(address, tracked_address.description, 
-                                      countdown_, "Object was not destroyed."); 
-      } 
-    } 
-  } 
- 
+};
+
+// Inspects the constructions and destructions of anything inheriting from
+// TrackedObject. This allows us to safely "leak" TrackedObjects, as
+// ConstructorTracker will destroy everything left over in its destructor.
+class ConstructorTracker {
+ public:
+  explicit ConstructorTracker(int count) : countdown_(count) {
+    assert(current_tracker_instance_ == nullptr);
+    current_tracker_instance_ = this;
+  }
+
+  ~ConstructorTracker() {
+    assert(current_tracker_instance_ == this);
+    current_tracker_instance_ = nullptr;
+
+    for (auto& it : address_map_) {
+      void* address = it.first;
+      TrackedAddress& tracked_address = it.second;
+      if (tracked_address.is_alive) {
+        ADD_FAILURE() << ErrorMessage(address, tracked_address.description,
+                                      countdown_, "Object was not destroyed.");
+      }
+    }
+  }
+
   static void ObjectConstructed(void* address, TString description) {
-    if (!CurrentlyTracking()) return; 
- 
-    TrackedAddress& tracked_address = 
-        current_tracker_instance_->address_map_[address]; 
-    if (tracked_address.is_alive) { 
-      ADD_FAILURE() << ErrorMessage( 
-          address, tracked_address.description, 
-          current_tracker_instance_->countdown_, 
-          "Object was re-constructed. Current object was constructed by " + 
-              description); 
-    } 
-    tracked_address = {true, std::move(description)}; 
-  } 
- 
-  static void ObjectDestructed(void* address) { 
-    if (!CurrentlyTracking()) return; 
- 
-    auto it = current_tracker_instance_->address_map_.find(address); 
-    // Not tracked. Ignore. 
-    if (it == current_tracker_instance_->address_map_.end()) return; 
- 
-    TrackedAddress& tracked_address = it->second; 
-    if (!tracked_address.is_alive) { 
-      ADD_FAILURE() << ErrorMessage(address, tracked_address.description, 
-                                    current_tracker_instance_->countdown_, 
-                                    "Object was re-destroyed."); 
-    } 
-    tracked_address.is_alive = false; 
-  } 
- 
- private: 
-  static bool CurrentlyTracking() { 
-    return current_tracker_instance_ != nullptr; 
-  } 
- 
+    if (!CurrentlyTracking()) return;
+
+    TrackedAddress& tracked_address =
+        current_tracker_instance_->address_map_[address];
+    if (tracked_address.is_alive) {
+      ADD_FAILURE() << ErrorMessage(
+          address, tracked_address.description,
+          current_tracker_instance_->countdown_,
+          "Object was re-constructed. Current object was constructed by " +
+              description);
+    }
+    tracked_address = {true, std::move(description)};
+  }
+
+  static void ObjectDestructed(void* address) {
+    if (!CurrentlyTracking()) return;
+
+    auto it = current_tracker_instance_->address_map_.find(address);
+    // Not tracked. Ignore.
+    if (it == current_tracker_instance_->address_map_.end()) return;
+
+    TrackedAddress& tracked_address = it->second;
+    if (!tracked_address.is_alive) {
+      ADD_FAILURE() << ErrorMessage(address, tracked_address.description,
+                                    current_tracker_instance_->countdown_,
+                                    "Object was re-destroyed.");
+    }
+    tracked_address.is_alive = false;
+  }
+
+ private:
+  static bool CurrentlyTracking() {
+    return current_tracker_instance_ != nullptr;
+  }
+
   static TString ErrorMessage(void* address,
                                   const TString& address_description,
-                                  int countdown, 
+                                  int countdown,
                                   const TString& error_description) {
     return y_absl::Substitute(
-        "With coundtown at $0:\n" 
-        "  $1\n" 
-        "  Object originally constructed by $2\n" 
-        "  Object address: $3\n", 
-        countdown, error_description, address_description, address); 
-  } 
- 
-  std::unordered_map<void*, TrackedAddress> address_map_; 
-  int countdown_; 
- 
-  static ConstructorTracker* current_tracker_instance_; 
-}; 
- 
-class TrackedObject { 
- public: 
-  TrackedObject(const TrackedObject&) = delete; 
-  TrackedObject(TrackedObject&&) = delete; 
- 
- protected: 
+        "With coundtown at $0:\n"
+        "  $1\n"
+        "  Object originally constructed by $2\n"
+        "  Object address: $3\n",
+        countdown, error_description, address_description, address);
+  }
+
+  std::unordered_map<void*, TrackedAddress> address_map_;
+  int countdown_;
+
+  static ConstructorTracker* current_tracker_instance_;
+};
+
+class TrackedObject {
+ public:
+  TrackedObject(const TrackedObject&) = delete;
+  TrackedObject(TrackedObject&&) = delete;
+
+ protected:
   explicit TrackedObject(TString description) {
-    ConstructorTracker::ObjectConstructed(this, std::move(description)); 
-  } 
- 
-  ~TrackedObject() noexcept { ConstructorTracker::ObjectDestructed(this); } 
-}; 
-}  // namespace exceptions_internal 
- 
-extern exceptions_internal::NoThrowTag nothrow_ctor; 
- 
-extern exceptions_internal::StrongGuaranteeTagType strong_guarantee; 
- 
-// A test class which is convertible to bool.  The conversion can be 
-// instrumented to throw at a controlled time. 
-class ThrowingBool { 
- public: 
-  ThrowingBool(bool b) noexcept : b_(b) {}  // NOLINT(runtime/explicit) 
-  operator bool() const {                   // NOLINT 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return b_; 
-  } 
- 
- private: 
-  bool b_; 
-}; 
- 
-/* 
- * Configuration enum for the ThrowingValue type that defines behavior for the 
- * lifetime of the instance. Use testing::nothrow_ctor to prevent the integer 
- * constructor from throwing. 
- * 
- * kEverythingThrows: Every operation can throw an exception 
- * kNoThrowCopy: Copy construction and copy assignment will not throw 
- * kNoThrowMove: Move construction and move assignment will not throw 
- * kNoThrowNew: Overloaded operators new and new[] will not throw 
- */ 
-enum class TypeSpec { 
-  kEverythingThrows = 0, 
-  kNoThrowCopy = 1, 
-  kNoThrowMove = 1 << 1, 
-  kNoThrowNew = 1 << 2, 
-}; 
- 
-/* 
- * A testing class instrumented to throw an exception at a controlled time. 
- * 
- * ThrowingValue implements a slightly relaxed version of the Regular concept -- 
- * that is it's a value type with the expected semantics.  It also implements 
- * arithmetic operations.  It doesn't implement member and pointer operators 
- * like operator-> or operator[]. 
- * 
- * ThrowingValue can be instrumented to have certain operations be noexcept by 
- * using compile-time bitfield template arguments.  That is, to make an 
- * ThrowingValue which has noexcept move construction/assignment and noexcept 
- * copy construction/assignment, use the following: 
- *   ThrowingValue<testing::kNoThrowMove | testing::kNoThrowCopy> my_thrwr{val}; 
- */ 
-template <TypeSpec Spec = TypeSpec::kEverythingThrows> 
-class ThrowingValue : private exceptions_internal::TrackedObject { 
-  static constexpr bool IsSpecified(TypeSpec spec) { 
-    return static_cast<bool>(Spec & spec); 
-  } 
- 
-  static constexpr int kDefaultValue = 0; 
-  static constexpr int kBadValue = 938550620; 
- 
- public: 
-  ThrowingValue() : TrackedObject(GetInstanceString(kDefaultValue)) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ = kDefaultValue; 
-  } 
- 
-  ThrowingValue(const ThrowingValue& other) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowCopy)) 
-      : TrackedObject(GetInstanceString(other.dummy_)) { 
-    if (!IsSpecified(TypeSpec::kNoThrowCopy)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    } 
-    dummy_ = other.dummy_; 
-  } 
- 
-  ThrowingValue(ThrowingValue&& other) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowMove)) 
-      : TrackedObject(GetInstanceString(other.dummy_)) { 
-    if (!IsSpecified(TypeSpec::kNoThrowMove)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    } 
-    dummy_ = other.dummy_; 
-  } 
- 
-  explicit ThrowingValue(int i) : TrackedObject(GetInstanceString(i)) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ = i; 
-  } 
- 
-  ThrowingValue(int i, exceptions_internal::NoThrowTag) noexcept 
-      : TrackedObject(GetInstanceString(i)), dummy_(i) {} 
- 
+    ConstructorTracker::ObjectConstructed(this, std::move(description));
+  }
+
+  ~TrackedObject() noexcept { ConstructorTracker::ObjectDestructed(this); }
+};
+}  // namespace exceptions_internal
+
+extern exceptions_internal::NoThrowTag nothrow_ctor;
+
+extern exceptions_internal::StrongGuaranteeTagType strong_guarantee;
+
+// A test class which is convertible to bool.  The conversion can be
+// instrumented to throw at a controlled time.
+class ThrowingBool {
+ public:
+  ThrowingBool(bool b) noexcept : b_(b) {}  // NOLINT(runtime/explicit)
+  operator bool() const {                   // NOLINT
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return b_;
+  }
+
+ private:
+  bool b_;
+};
+
+/*
+ * Configuration enum for the ThrowingValue type that defines behavior for the
+ * lifetime of the instance. Use testing::nothrow_ctor to prevent the integer
+ * constructor from throwing.
+ *
+ * kEverythingThrows: Every operation can throw an exception
+ * kNoThrowCopy: Copy construction and copy assignment will not throw
+ * kNoThrowMove: Move construction and move assignment will not throw
+ * kNoThrowNew: Overloaded operators new and new[] will not throw
+ */
+enum class TypeSpec {
+  kEverythingThrows = 0,
+  kNoThrowCopy = 1,
+  kNoThrowMove = 1 << 1,
+  kNoThrowNew = 1 << 2,
+};
+
+/*
+ * A testing class instrumented to throw an exception at a controlled time.
+ *
+ * ThrowingValue implements a slightly relaxed version of the Regular concept --
+ * that is it's a value type with the expected semantics.  It also implements
+ * arithmetic operations.  It doesn't implement member and pointer operators
+ * like operator-> or operator[].
+ *
+ * ThrowingValue can be instrumented to have certain operations be noexcept by
+ * using compile-time bitfield template arguments.  That is, to make an
+ * ThrowingValue which has noexcept move construction/assignment and noexcept
+ * copy construction/assignment, use the following:
+ *   ThrowingValue<testing::kNoThrowMove | testing::kNoThrowCopy> my_thrwr{val};
+ */
+template <TypeSpec Spec = TypeSpec::kEverythingThrows>
+class ThrowingValue : private exceptions_internal::TrackedObject {
+  static constexpr bool IsSpecified(TypeSpec spec) {
+    return static_cast<bool>(Spec & spec);
+  }
+
+  static constexpr int kDefaultValue = 0;
+  static constexpr int kBadValue = 938550620;
+
+ public:
+  ThrowingValue() : TrackedObject(GetInstanceString(kDefaultValue)) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ = kDefaultValue;
+  }
+
+  ThrowingValue(const ThrowingValue& other) noexcept(
+      IsSpecified(TypeSpec::kNoThrowCopy))
+      : TrackedObject(GetInstanceString(other.dummy_)) {
+    if (!IsSpecified(TypeSpec::kNoThrowCopy)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    }
+    dummy_ = other.dummy_;
+  }
+
+  ThrowingValue(ThrowingValue&& other) noexcept(
+      IsSpecified(TypeSpec::kNoThrowMove))
+      : TrackedObject(GetInstanceString(other.dummy_)) {
+    if (!IsSpecified(TypeSpec::kNoThrowMove)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    }
+    dummy_ = other.dummy_;
+  }
+
+  explicit ThrowingValue(int i) : TrackedObject(GetInstanceString(i)) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ = i;
+  }
+
+  ThrowingValue(int i, exceptions_internal::NoThrowTag) noexcept
+      : TrackedObject(GetInstanceString(i)), dummy_(i) {}
+
   // y_absl expects nothrow destructors
-  ~ThrowingValue() noexcept = default; 
- 
-  ThrowingValue& operator=(const ThrowingValue& other) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowCopy)) { 
-    dummy_ = kBadValue; 
-    if (!IsSpecified(TypeSpec::kNoThrowCopy)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    } 
-    dummy_ = other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator=(ThrowingValue&& other) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowMove)) { 
-    dummy_ = kBadValue; 
-    if (!IsSpecified(TypeSpec::kNoThrowMove)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    } 
-    dummy_ = other.dummy_; 
-    return *this; 
-  } 
- 
-  // Arithmetic Operators 
-  ThrowingValue operator+(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ + other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator+() const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator-(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ - other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator-() const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(-dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue& operator++() { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    ++dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue operator++(int) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    auto out = ThrowingValue(dummy_, nothrow_ctor); 
-    ++dummy_; 
-    return out; 
-  } 
- 
-  ThrowingValue& operator--() { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    --dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue operator--(int) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    auto out = ThrowingValue(dummy_, nothrow_ctor); 
-    --dummy_; 
-    return out; 
-  } 
- 
-  ThrowingValue operator*(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ * other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator/(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ / other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator%(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ % other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator<<(int shift) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ << shift, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator>>(int shift) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ >> shift, nothrow_ctor); 
-  } 
- 
-  // Comparison Operators 
-  // NOTE: We use `ThrowingBool` instead of `bool` because most STL 
-  // types/containers requires T to be convertible to bool. 
-  friend ThrowingBool operator==(const ThrowingValue& a, 
-                                 const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ == b.dummy_; 
-  } 
-  friend ThrowingBool operator!=(const ThrowingValue& a, 
-                                 const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ != b.dummy_; 
-  } 
-  friend ThrowingBool operator<(const ThrowingValue& a, 
-                                const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ < b.dummy_; 
-  } 
-  friend ThrowingBool operator<=(const ThrowingValue& a, 
-                                 const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ <= b.dummy_; 
-  } 
-  friend ThrowingBool operator>(const ThrowingValue& a, 
-                                const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ > b.dummy_; 
-  } 
-  friend ThrowingBool operator>=(const ThrowingValue& a, 
-                                 const ThrowingValue& b) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return a.dummy_ >= b.dummy_; 
-  } 
- 
-  // Logical Operators 
-  ThrowingBool operator!() const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return !dummy_; 
-  } 
- 
-  ThrowingBool operator&&(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return dummy_ && other.dummy_; 
-  } 
- 
-  ThrowingBool operator||(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return dummy_ || other.dummy_; 
-  } 
- 
-  // Bitwise Logical Operators 
-  ThrowingValue operator~() const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(~dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator&(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ & other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator|(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ | other.dummy_, nothrow_ctor); 
-  } 
- 
-  ThrowingValue operator^(const ThrowingValue& other) const { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return ThrowingValue(dummy_ ^ other.dummy_, nothrow_ctor); 
-  } 
- 
-  // Compound Assignment operators 
-  ThrowingValue& operator+=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ += other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator-=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ -= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator*=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ *= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator/=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ /= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator%=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ %= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator&=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ &= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator|=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ |= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator^=(const ThrowingValue& other) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ ^= other.dummy_; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator<<=(int shift) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ <<= shift; 
-    return *this; 
-  } 
- 
-  ThrowingValue& operator>>=(int shift) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ >>= shift; 
-    return *this; 
-  } 
- 
-  // Pointer operators 
-  void operator&() const = delete;  // NOLINT(runtime/operator) 
- 
-  // Stream operators 
-  friend std::ostream& operator<<(std::ostream& os, const ThrowingValue& tv) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return os << GetInstanceString(tv.dummy_); 
-  } 
- 
-  friend std::istream& operator>>(std::istream& is, const ThrowingValue&) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return is; 
-  } 
- 
-  // Memory management operators 
+  ~ThrowingValue() noexcept = default;
+
+  ThrowingValue& operator=(const ThrowingValue& other) noexcept(
+      IsSpecified(TypeSpec::kNoThrowCopy)) {
+    dummy_ = kBadValue;
+    if (!IsSpecified(TypeSpec::kNoThrowCopy)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    }
+    dummy_ = other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator=(ThrowingValue&& other) noexcept(
+      IsSpecified(TypeSpec::kNoThrowMove)) {
+    dummy_ = kBadValue;
+    if (!IsSpecified(TypeSpec::kNoThrowMove)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    }
+    dummy_ = other.dummy_;
+    return *this;
+  }
+
+  // Arithmetic Operators
+  ThrowingValue operator+(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ + other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator+() const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator-(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ - other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator-() const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(-dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue& operator++() {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    ++dummy_;
+    return *this;
+  }
+
+  ThrowingValue operator++(int) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    auto out = ThrowingValue(dummy_, nothrow_ctor);
+    ++dummy_;
+    return out;
+  }
+
+  ThrowingValue& operator--() {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    --dummy_;
+    return *this;
+  }
+
+  ThrowingValue operator--(int) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    auto out = ThrowingValue(dummy_, nothrow_ctor);
+    --dummy_;
+    return out;
+  }
+
+  ThrowingValue operator*(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ * other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator/(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ / other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator%(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ % other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator<<(int shift) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ << shift, nothrow_ctor);
+  }
+
+  ThrowingValue operator>>(int shift) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ >> shift, nothrow_ctor);
+  }
+
+  // Comparison Operators
+  // NOTE: We use `ThrowingBool` instead of `bool` because most STL
+  // types/containers requires T to be convertible to bool.
+  friend ThrowingBool operator==(const ThrowingValue& a,
+                                 const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ == b.dummy_;
+  }
+  friend ThrowingBool operator!=(const ThrowingValue& a,
+                                 const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ != b.dummy_;
+  }
+  friend ThrowingBool operator<(const ThrowingValue& a,
+                                const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ < b.dummy_;
+  }
+  friend ThrowingBool operator<=(const ThrowingValue& a,
+                                 const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ <= b.dummy_;
+  }
+  friend ThrowingBool operator>(const ThrowingValue& a,
+                                const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ > b.dummy_;
+  }
+  friend ThrowingBool operator>=(const ThrowingValue& a,
+                                 const ThrowingValue& b) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return a.dummy_ >= b.dummy_;
+  }
+
+  // Logical Operators
+  ThrowingBool operator!() const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return !dummy_;
+  }
+
+  ThrowingBool operator&&(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return dummy_ && other.dummy_;
+  }
+
+  ThrowingBool operator||(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return dummy_ || other.dummy_;
+  }
+
+  // Bitwise Logical Operators
+  ThrowingValue operator~() const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(~dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator&(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ & other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator|(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ | other.dummy_, nothrow_ctor);
+  }
+
+  ThrowingValue operator^(const ThrowingValue& other) const {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return ThrowingValue(dummy_ ^ other.dummy_, nothrow_ctor);
+  }
+
+  // Compound Assignment operators
+  ThrowingValue& operator+=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ += other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator-=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ -= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator*=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ *= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator/=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ /= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator%=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ %= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator&=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ &= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator|=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ |= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator^=(const ThrowingValue& other) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ ^= other.dummy_;
+    return *this;
+  }
+
+  ThrowingValue& operator<<=(int shift) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ <<= shift;
+    return *this;
+  }
+
+  ThrowingValue& operator>>=(int shift) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ >>= shift;
+    return *this;
+  }
+
+  // Pointer operators
+  void operator&() const = delete;  // NOLINT(runtime/operator)
+
+  // Stream operators
+  friend std::ostream& operator<<(std::ostream& os, const ThrowingValue& tv) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return os << GetInstanceString(tv.dummy_);
+  }
+
+  friend std::istream& operator>>(std::istream& is, const ThrowingValue&) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    return is;
+  }
+
+  // Memory management operators
   static void* operator new(size_t s) noexcept(
       IsSpecified(TypeSpec::kNoThrowNew)) {
     if (!IsSpecified(TypeSpec::kNoThrowNew)) {
@@ -552,558 +552,558 @@ class ThrowingValue : private exceptions_internal::TrackedObject {
     return ::operator new[](s);
   }
 
-  template <typename... Args> 
-  static void* operator new(size_t s, Args&&... args) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowNew)) { 
-    if (!IsSpecified(TypeSpec::kNoThrowNew)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION, true); 
-    } 
-    return ::operator new(s, std::forward<Args>(args)...); 
-  } 
- 
-  template <typename... Args> 
-  static void* operator new[](size_t s, Args&&... args) noexcept( 
-      IsSpecified(TypeSpec::kNoThrowNew)) { 
-    if (!IsSpecified(TypeSpec::kNoThrowNew)) { 
-      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION, true); 
-    } 
-    return ::operator new[](s, std::forward<Args>(args)...); 
-  } 
- 
-  // Abseil doesn't support throwing overloaded operator delete.  These are 
-  // provided so a throwing operator-new can clean up after itself. 
-  void operator delete(void* p) noexcept { ::operator delete(p); } 
- 
-  template <typename... Args> 
-  void operator delete(void* p, Args&&... args) noexcept { 
-    ::operator delete(p, std::forward<Args>(args)...); 
-  } 
- 
-  void operator delete[](void* p) noexcept { return ::operator delete[](p); } 
- 
-  template <typename... Args> 
-  void operator delete[](void* p, Args&&... args) noexcept { 
-    return ::operator delete[](p, std::forward<Args>(args)...); 
-  } 
- 
-  // Non-standard access to the actual contained value.  No need for this to 
-  // throw. 
-  int& Get() noexcept { return dummy_; } 
-  const int& Get() const noexcept { return dummy_; } 
- 
- private: 
+  template <typename... Args>
+  static void* operator new(size_t s, Args&&... args) noexcept(
+      IsSpecified(TypeSpec::kNoThrowNew)) {
+    if (!IsSpecified(TypeSpec::kNoThrowNew)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION, true);
+    }
+    return ::operator new(s, std::forward<Args>(args)...);
+  }
+
+  template <typename... Args>
+  static void* operator new[](size_t s, Args&&... args) noexcept(
+      IsSpecified(TypeSpec::kNoThrowNew)) {
+    if (!IsSpecified(TypeSpec::kNoThrowNew)) {
+      exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION, true);
+    }
+    return ::operator new[](s, std::forward<Args>(args)...);
+  }
+
+  // Abseil doesn't support throwing overloaded operator delete.  These are
+  // provided so a throwing operator-new can clean up after itself.
+  void operator delete(void* p) noexcept { ::operator delete(p); }
+
+  template <typename... Args>
+  void operator delete(void* p, Args&&... args) noexcept {
+    ::operator delete(p, std::forward<Args>(args)...);
+  }
+
+  void operator delete[](void* p) noexcept { return ::operator delete[](p); }
+
+  template <typename... Args>
+  void operator delete[](void* p, Args&&... args) noexcept {
+    return ::operator delete[](p, std::forward<Args>(args)...);
+  }
+
+  // Non-standard access to the actual contained value.  No need for this to
+  // throw.
+  int& Get() noexcept { return dummy_; }
+  const int& Get() const noexcept { return dummy_; }
+
+ private:
   static TString GetInstanceString(int dummy) {
     return y_absl::StrCat("ThrowingValue<",
-                        exceptions_internal::GetSpecString(Spec), ">(", dummy, 
-                        ")"); 
-  } 
- 
-  int dummy_; 
-}; 
-// While not having to do with exceptions, explicitly delete comma operator, to 
-// make sure we don't use it on user-supplied types. 
-template <TypeSpec Spec, typename T> 
-void operator,(const ThrowingValue<Spec>&, T&&) = delete; 
-template <TypeSpec Spec, typename T> 
-void operator,(T&&, const ThrowingValue<Spec>&) = delete; 
- 
-/* 
- * Configuration enum for the ThrowingAllocator type that defines behavior for 
- * the lifetime of the instance. 
- * 
- * kEverythingThrows: Calls to the member functions may throw 
- * kNoThrowAllocate: Calls to the member functions will not throw 
- */ 
-enum class AllocSpec { 
-  kEverythingThrows = 0, 
-  kNoThrowAllocate = 1, 
-}; 
- 
-/* 
- * An allocator type which is instrumented to throw at a controlled time, or not 
- * to throw, using AllocSpec. The supported settings are the default of every 
- * function which is allowed to throw in a conforming allocator possibly 
- * throwing, or nothing throws, in line with the ABSL_ALLOCATOR_THROWS 
- * configuration macro. 
- */ 
-template <typename T, AllocSpec Spec = AllocSpec::kEverythingThrows> 
-class ThrowingAllocator : private exceptions_internal::TrackedObject { 
-  static constexpr bool IsSpecified(AllocSpec spec) { 
-    return static_cast<bool>(Spec & spec); 
-  } 
- 
- public: 
-  using pointer = T*; 
-  using const_pointer = const T*; 
-  using reference = T&; 
-  using const_reference = const T&; 
-  using void_pointer = void*; 
-  using const_void_pointer = const void*; 
-  using value_type = T; 
-  using size_type = size_t; 
-  using difference_type = ptrdiff_t; 
- 
-  using is_nothrow = 
-      std::integral_constant<bool, Spec == AllocSpec::kNoThrowAllocate>; 
-  using propagate_on_container_copy_assignment = std::true_type; 
-  using propagate_on_container_move_assignment = std::true_type; 
-  using propagate_on_container_swap = std::true_type; 
-  using is_always_equal = std::false_type; 
- 
-  ThrowingAllocator() : TrackedObject(GetInstanceString(next_id_)) { 
-    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION); 
-    dummy_ = std::make_shared<const int>(next_id_++); 
-  } 
- 
-  template <typename U> 
-  ThrowingAllocator(const ThrowingAllocator<U, Spec>& other) noexcept  // NOLINT 
-      : TrackedObject(GetInstanceString(*other.State())), 
-        dummy_(other.State()) {} 
- 
-  // According to C++11 standard [17.6.3.5], Table 28, the move/copy ctors of 
-  // allocator shall not exit via an exception, thus they are marked noexcept. 
-  ThrowingAllocator(const ThrowingAllocator& other) noexcept 
-      : TrackedObject(GetInstanceString(*other.State())), 
-        dummy_(other.State()) {} 
- 
-  template <typename U> 
-  ThrowingAllocator(ThrowingAllocator<U, Spec>&& other) noexcept  // NOLINT 
-      : TrackedObject(GetInstanceString(*other.State())), 
-        dummy_(std::move(other.State())) {} 
- 
-  ThrowingAllocator(ThrowingAllocator&& other) noexcept 
-      : TrackedObject(GetInstanceString(*other.State())), 
-        dummy_(std::move(other.State())) {} 
- 
-  ~ThrowingAllocator() noexcept = default; 
- 
-  ThrowingAllocator& operator=(const ThrowingAllocator& other) noexcept { 
-    dummy_ = other.State(); 
-    return *this; 
-  } 
- 
-  template <typename U> 
-  ThrowingAllocator& operator=( 
-      const ThrowingAllocator<U, Spec>& other) noexcept { 
-    dummy_ = other.State(); 
-    return *this; 
-  } 
- 
-  template <typename U> 
-  ThrowingAllocator& operator=(ThrowingAllocator<U, Spec>&& other) noexcept { 
-    dummy_ = std::move(other.State()); 
-    return *this; 
-  } 
- 
-  template <typename U> 
-  struct rebind { 
-    using other = ThrowingAllocator<U, Spec>; 
-  }; 
- 
-  pointer allocate(size_type n) noexcept( 
-      IsSpecified(AllocSpec::kNoThrowAllocate)) { 
-    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION); 
-    return static_cast<pointer>(::operator new(n * sizeof(T))); 
-  } 
- 
-  pointer allocate(size_type n, const_void_pointer) noexcept( 
-      IsSpecified(AllocSpec::kNoThrowAllocate)) { 
-    return allocate(n); 
-  } 
- 
-  void deallocate(pointer ptr, size_type) noexcept { 
-    ReadState(); 
-    ::operator delete(static_cast<void*>(ptr)); 
-  } 
- 
-  template <typename U, typename... Args> 
-  void construct(U* ptr, Args&&... args) noexcept( 
-      IsSpecified(AllocSpec::kNoThrowAllocate)) { 
-    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION); 
-    ::new (static_cast<void*>(ptr)) U(std::forward<Args>(args)...); 
-  } 
- 
-  template <typename U> 
-  void destroy(U* p) noexcept { 
-    ReadState(); 
-    p->~U(); 
-  } 
- 
-  size_type max_size() const noexcept { 
-    return (std::numeric_limits<difference_type>::max)() / sizeof(value_type); 
-  } 
- 
-  ThrowingAllocator select_on_container_copy_construction() noexcept( 
-      IsSpecified(AllocSpec::kNoThrowAllocate)) { 
-    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION); 
+                        exceptions_internal::GetSpecString(Spec), ">(", dummy,
+                        ")");
+  }
+
+  int dummy_;
+};
+// While not having to do with exceptions, explicitly delete comma operator, to
+// make sure we don't use it on user-supplied types.
+template <TypeSpec Spec, typename T>
+void operator,(const ThrowingValue<Spec>&, T&&) = delete;
+template <TypeSpec Spec, typename T>
+void operator,(T&&, const ThrowingValue<Spec>&) = delete;
+
+/*
+ * Configuration enum for the ThrowingAllocator type that defines behavior for
+ * the lifetime of the instance.
+ *
+ * kEverythingThrows: Calls to the member functions may throw
+ * kNoThrowAllocate: Calls to the member functions will not throw
+ */
+enum class AllocSpec {
+  kEverythingThrows = 0,
+  kNoThrowAllocate = 1,
+};
+
+/*
+ * An allocator type which is instrumented to throw at a controlled time, or not
+ * to throw, using AllocSpec. The supported settings are the default of every
+ * function which is allowed to throw in a conforming allocator possibly
+ * throwing, or nothing throws, in line with the ABSL_ALLOCATOR_THROWS
+ * configuration macro.
+ */
+template <typename T, AllocSpec Spec = AllocSpec::kEverythingThrows>
+class ThrowingAllocator : private exceptions_internal::TrackedObject {
+  static constexpr bool IsSpecified(AllocSpec spec) {
+    return static_cast<bool>(Spec & spec);
+  }
+
+ public:
+  using pointer = T*;
+  using const_pointer = const T*;
+  using reference = T&;
+  using const_reference = const T&;
+  using void_pointer = void*;
+  using const_void_pointer = const void*;
+  using value_type = T;
+  using size_type = size_t;
+  using difference_type = ptrdiff_t;
+
+  using is_nothrow =
+      std::integral_constant<bool, Spec == AllocSpec::kNoThrowAllocate>;
+  using propagate_on_container_copy_assignment = std::true_type;
+  using propagate_on_container_move_assignment = std::true_type;
+  using propagate_on_container_swap = std::true_type;
+  using is_always_equal = std::false_type;
+
+  ThrowingAllocator() : TrackedObject(GetInstanceString(next_id_)) {
+    exceptions_internal::MaybeThrow(ABSL_PRETTY_FUNCTION);
+    dummy_ = std::make_shared<const int>(next_id_++);
+  }
+
+  template <typename U>
+  ThrowingAllocator(const ThrowingAllocator<U, Spec>& other) noexcept  // NOLINT
+      : TrackedObject(GetInstanceString(*other.State())),
+        dummy_(other.State()) {}
+
+  // According to C++11 standard [17.6.3.5], Table 28, the move/copy ctors of
+  // allocator shall not exit via an exception, thus they are marked noexcept.
+  ThrowingAllocator(const ThrowingAllocator& other) noexcept
+      : TrackedObject(GetInstanceString(*other.State())),
+        dummy_(other.State()) {}
+
+  template <typename U>
+  ThrowingAllocator(ThrowingAllocator<U, Spec>&& other) noexcept  // NOLINT
+      : TrackedObject(GetInstanceString(*other.State())),
+        dummy_(std::move(other.State())) {}
+
+  ThrowingAllocator(ThrowingAllocator&& other) noexcept
+      : TrackedObject(GetInstanceString(*other.State())),
+        dummy_(std::move(other.State())) {}
+
+  ~ThrowingAllocator() noexcept = default;
+
+  ThrowingAllocator& operator=(const ThrowingAllocator& other) noexcept {
+    dummy_ = other.State();
+    return *this;
+  }
+
+  template <typename U>
+  ThrowingAllocator& operator=(
+      const ThrowingAllocator<U, Spec>& other) noexcept {
+    dummy_ = other.State();
     return *this;
-  } 
- 
-  template <typename U> 
-  bool operator==(const ThrowingAllocator<U, Spec>& other) const noexcept { 
-    return dummy_ == other.dummy_; 
-  } 
- 
-  template <typename U> 
-  bool operator!=(const ThrowingAllocator<U, Spec>& other) const noexcept { 
-    return dummy_ != other.dummy_; 
-  } 
- 
-  template <typename, AllocSpec> 
-  friend class ThrowingAllocator; 
- 
- private: 
+  }
+
+  template <typename U>
+  ThrowingAllocator& operator=(ThrowingAllocator<U, Spec>&& other) noexcept {
+    dummy_ = std::move(other.State());
+    return *this;
+  }
+
+  template <typename U>
+  struct rebind {
+    using other = ThrowingAllocator<U, Spec>;
+  };
+
+  pointer allocate(size_type n) noexcept(
+      IsSpecified(AllocSpec::kNoThrowAllocate)) {
+    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION);
+    return static_cast<pointer>(::operator new(n * sizeof(T)));
+  }
+
+  pointer allocate(size_type n, const_void_pointer) noexcept(
+      IsSpecified(AllocSpec::kNoThrowAllocate)) {
+    return allocate(n);
+  }
+
+  void deallocate(pointer ptr, size_type) noexcept {
+    ReadState();
+    ::operator delete(static_cast<void*>(ptr));
+  }
+
+  template <typename U, typename... Args>
+  void construct(U* ptr, Args&&... args) noexcept(
+      IsSpecified(AllocSpec::kNoThrowAllocate)) {
+    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION);
+    ::new (static_cast<void*>(ptr)) U(std::forward<Args>(args)...);
+  }
+
+  template <typename U>
+  void destroy(U* p) noexcept {
+    ReadState();
+    p->~U();
+  }
+
+  size_type max_size() const noexcept {
+    return (std::numeric_limits<difference_type>::max)() / sizeof(value_type);
+  }
+
+  ThrowingAllocator select_on_container_copy_construction() noexcept(
+      IsSpecified(AllocSpec::kNoThrowAllocate)) {
+    ReadStateAndMaybeThrow(ABSL_PRETTY_FUNCTION);
+    return *this;
+  }
+
+  template <typename U>
+  bool operator==(const ThrowingAllocator<U, Spec>& other) const noexcept {
+    return dummy_ == other.dummy_;
+  }
+
+  template <typename U>
+  bool operator!=(const ThrowingAllocator<U, Spec>& other) const noexcept {
+    return dummy_ != other.dummy_;
+  }
+
+  template <typename, AllocSpec>
+  friend class ThrowingAllocator;
+
+ private:
   static TString GetInstanceString(int dummy) {
     return y_absl::StrCat("ThrowingAllocator<",
-                        exceptions_internal::GetSpecString(Spec), ">(", dummy, 
-                        ")"); 
-  } 
- 
-  const std::shared_ptr<const int>& State() const { return dummy_; } 
-  std::shared_ptr<const int>& State() { return dummy_; } 
- 
-  void ReadState() { 
-    // we know that this will never be true, but the compiler doesn't, so this 
-    // should safely force a read of the value. 
-    if (*dummy_ < 0) std::abort(); 
-  } 
- 
+                        exceptions_internal::GetSpecString(Spec), ">(", dummy,
+                        ")");
+  }
+
+  const std::shared_ptr<const int>& State() const { return dummy_; }
+  std::shared_ptr<const int>& State() { return dummy_; }
+
+  void ReadState() {
+    // we know that this will never be true, but the compiler doesn't, so this
+    // should safely force a read of the value.
+    if (*dummy_ < 0) std::abort();
+  }
+
   void ReadStateAndMaybeThrow(y_absl::string_view msg) const {
-    if (!IsSpecified(AllocSpec::kNoThrowAllocate)) { 
-      exceptions_internal::MaybeThrow( 
+    if (!IsSpecified(AllocSpec::kNoThrowAllocate)) {
+      exceptions_internal::MaybeThrow(
           y_absl::Substitute("Allocator id $0 threw from $1", *dummy_, msg));
-    } 
-  } 
- 
-  static int next_id_; 
-  std::shared_ptr<const int> dummy_; 
-}; 
- 
-template <typename T, AllocSpec Spec> 
-int ThrowingAllocator<T, Spec>::next_id_ = 0; 
- 
-// Tests for resource leaks by attempting to construct a T using args repeatedly 
-// until successful, using the countdown method.  Side effects can then be 
-// tested for resource leaks. 
-template <typename T, typename... Args> 
-void TestThrowingCtor(Args&&... args) { 
-  struct Cleanup { 
-    ~Cleanup() { exceptions_internal::UnsetCountdown(); } 
-  } c; 
-  for (int count = 0;; ++count) { 
-    exceptions_internal::ConstructorTracker ct(count); 
-    exceptions_internal::SetCountdown(count); 
-    try { 
-      T temp(std::forward<Args>(args)...); 
-      static_cast<void>(temp); 
-      break; 
-    } catch (const exceptions_internal::TestException&) { 
-    } 
-  } 
-} 
- 
-// Tests the nothrow guarantee of the provided nullary operation. If the an 
-// exception is thrown, the result will be AssertionFailure(). Otherwise, it 
-// will be AssertionSuccess(). 
-template <typename Operation> 
-testing::AssertionResult TestNothrowOp(const Operation& operation) { 
-  struct Cleanup { 
-    Cleanup() { exceptions_internal::SetCountdown(); } 
-    ~Cleanup() { exceptions_internal::UnsetCountdown(); } 
-  } c; 
-  try { 
-    operation(); 
-    return testing::AssertionSuccess(); 
-  } catch (const exceptions_internal::TestException&) { 
-    return testing::AssertionFailure() 
-           << "TestException thrown during call to operation() when nothrow " 
-              "guarantee was expected."; 
-  } catch (...) { 
-    return testing::AssertionFailure() 
-           << "Unknown exception thrown during call to operation() when " 
-              "nothrow guarantee was expected."; 
-  } 
-} 
- 
-namespace exceptions_internal { 
- 
-// Dummy struct for ExceptionSafetyTestBuilder<> partial state. 
-struct UninitializedT {}; 
- 
-template <typename T> 
-class DefaultFactory { 
- public: 
-  explicit DefaultFactory(const T& t) : t_(t) {} 
+    }
+  }
+
+  static int next_id_;
+  std::shared_ptr<const int> dummy_;
+};
+
+template <typename T, AllocSpec Spec>
+int ThrowingAllocator<T, Spec>::next_id_ = 0;
+
+// Tests for resource leaks by attempting to construct a T using args repeatedly
+// until successful, using the countdown method.  Side effects can then be
+// tested for resource leaks.
+template <typename T, typename... Args>
+void TestThrowingCtor(Args&&... args) {
+  struct Cleanup {
+    ~Cleanup() { exceptions_internal::UnsetCountdown(); }
+  } c;
+  for (int count = 0;; ++count) {
+    exceptions_internal::ConstructorTracker ct(count);
+    exceptions_internal::SetCountdown(count);
+    try {
+      T temp(std::forward<Args>(args)...);
+      static_cast<void>(temp);
+      break;
+    } catch (const exceptions_internal::TestException&) {
+    }
+  }
+}
+
+// Tests the nothrow guarantee of the provided nullary operation. If the an
+// exception is thrown, the result will be AssertionFailure(). Otherwise, it
+// will be AssertionSuccess().
+template <typename Operation>
+testing::AssertionResult TestNothrowOp(const Operation& operation) {
+  struct Cleanup {
+    Cleanup() { exceptions_internal::SetCountdown(); }
+    ~Cleanup() { exceptions_internal::UnsetCountdown(); }
+  } c;
+  try {
+    operation();
+    return testing::AssertionSuccess();
+  } catch (const exceptions_internal::TestException&) {
+    return testing::AssertionFailure()
+           << "TestException thrown during call to operation() when nothrow "
+              "guarantee was expected.";
+  } catch (...) {
+    return testing::AssertionFailure()
+           << "Unknown exception thrown during call to operation() when "
+              "nothrow guarantee was expected.";
+  }
+}
+
+namespace exceptions_internal {
+
+// Dummy struct for ExceptionSafetyTestBuilder<> partial state.
+struct UninitializedT {};
+
+template <typename T>
+class DefaultFactory {
+ public:
+  explicit DefaultFactory(const T& t) : t_(t) {}
   std::unique_ptr<T> operator()() const { return y_absl::make_unique<T>(t_); }
- 
- private: 
-  T t_; 
-}; 
- 
-template <size_t LazyContractsCount, typename LazyFactory, 
-          typename LazyOperation> 
+
+ private:
+  T t_;
+};
+
+template <size_t LazyContractsCount, typename LazyFactory,
+          typename LazyOperation>
 using EnableIfTestable = typename y_absl::enable_if_t<
-    LazyContractsCount != 0 && 
-    !std::is_same<LazyFactory, UninitializedT>::value && 
-    !std::is_same<LazyOperation, UninitializedT>::value>; 
- 
-template <typename Factory = UninitializedT, 
-          typename Operation = UninitializedT, typename... Contracts> 
-class ExceptionSafetyTestBuilder; 
- 
-}  // namespace exceptions_internal 
- 
-/* 
- * Constructs an empty ExceptionSafetyTestBuilder. All 
- * ExceptionSafetyTestBuilder objects are immutable and all With[thing] mutation 
- * methods return new instances of ExceptionSafetyTestBuilder. 
- * 
- * In order to test a T for exception safety, a factory for that T, a testable 
- * operation, and at least one contract callback returning an assertion 
- * result must be applied using the respective methods. 
- */ 
-exceptions_internal::ExceptionSafetyTestBuilder<> MakeExceptionSafetyTester(); 
- 
-namespace exceptions_internal { 
-template <typename T> 
-struct IsUniquePtr : std::false_type {}; 
- 
-template <typename T, typename D> 
-struct IsUniquePtr<std::unique_ptr<T, D>> : std::true_type {}; 
- 
-template <typename Factory> 
-struct FactoryPtrTypeHelper { 
-  using type = decltype(std::declval<const Factory&>()()); 
- 
-  static_assert(IsUniquePtr<type>::value, "Factories must return a unique_ptr"); 
-}; 
- 
-template <typename Factory> 
-using FactoryPtrType = typename FactoryPtrTypeHelper<Factory>::type; 
- 
-template <typename Factory> 
-using FactoryElementType = typename FactoryPtrType<Factory>::element_type; 
- 
-template <typename T> 
-class ExceptionSafetyTest { 
-  using Factory = std::function<std::unique_ptr<T>()>; 
-  using Operation = std::function<void(T*)>; 
-  using Contract = std::function<AssertionResult(T*)>; 
- 
- public: 
-  template <typename... Contracts> 
-  explicit ExceptionSafetyTest(const Factory& f, const Operation& op, 
-                               const Contracts&... contracts) 
-      : factory_(f), operation_(op), contracts_{WrapContract(contracts)...} {} 
- 
-  AssertionResult Test() const { 
-    for (int count = 0;; ++count) { 
-      exceptions_internal::ConstructorTracker ct(count); 
- 
-      for (const auto& contract : contracts_) { 
-        auto t_ptr = factory_(); 
-        try { 
-          SetCountdown(count); 
-          operation_(t_ptr.get()); 
-          // Unset for the case that the operation throws no exceptions, which 
-          // would leave the countdown set and break the *next* exception safety 
-          // test after this one. 
-          UnsetCountdown(); 
-          return AssertionSuccess(); 
-        } catch (const exceptions_internal::TestException& e) { 
-          if (!contract(t_ptr.get())) { 
-            return AssertionFailure() << e.what() << " failed contract check"; 
-          } 
-        } 
-      } 
-    } 
-  } 
- 
- private: 
-  template <typename ContractFn> 
-  Contract WrapContract(const ContractFn& contract) { 
-    return [contract](T* t_ptr) { return AssertionResult(contract(t_ptr)); }; 
-  } 
- 
-  Contract WrapContract(StrongGuaranteeTagType) { 
-    return [this](T* t_ptr) { return AssertionResult(*factory_() == *t_ptr); }; 
-  } 
- 
-  Factory factory_; 
-  Operation operation_; 
-  std::vector<Contract> contracts_; 
-}; 
- 
-/* 
- * Builds a tester object that tests if performing a operation on a T follows 
- * exception safety guarantees. Verification is done via contract assertion 
- * callbacks applied to T instances post-throw. 
- * 
- * Template parameters for ExceptionSafetyTestBuilder: 
- * 
- * - Factory: The factory object (passed in via tester.WithFactory(...) or 
- *   tester.WithInitialValue(...)) must be invocable with the signature 
- *   `std::unique_ptr<T> operator()() const` where T is the type being tested. 
- *   It is used for reliably creating identical T instances to test on. 
- * 
- * - Operation: The operation object (passsed in via tester.WithOperation(...) 
- *   or tester.Test(...)) must be invocable with the signature 
- *   `void operator()(T*) const` where T is the type being tested. It is used 
- *   for performing steps on a T instance that may throw and that need to be 
- *   checked for exception safety. Each call to the operation will receive a 
- *   fresh T instance so it's free to modify and destroy the T instances as it 
- *   pleases. 
- * 
- * - Contracts...: The contract assertion callback objects (passed in via 
- *   tester.WithContracts(...)) must be invocable with the signature 
- *   `testing::AssertionResult operator()(T*) const` where T is the type being 
- *   tested. Contract assertion callbacks are provided T instances post-throw. 
- *   They must return testing::AssertionSuccess when the type contracts of the 
- *   provided T instance hold. If the type contracts of the T instance do not 
- *   hold, they must return testing::AssertionFailure. Execution order of 
- *   Contracts... is unspecified. They will each individually get a fresh T 
- *   instance so they are free to modify and destroy the T instances as they 
- *   please. 
- */ 
-template <typename Factory, typename Operation, typename... Contracts> 
-class ExceptionSafetyTestBuilder { 
- public: 
-  /* 
-   * Returns a new ExceptionSafetyTestBuilder with an included T factory based 
-   * on the provided T instance. The existing factory will not be included in 
-   * the newly created tester instance. The created factory returns a new T 
-   * instance by copy-constructing the provided const T& t. 
-   * 
-   * Preconditions for tester.WithInitialValue(const T& t): 
-   * 
-   * - The const T& t object must be copy-constructible where T is the type 
-   *   being tested. For non-copy-constructible objects, use the method 
-   *   tester.WithFactory(...). 
-   */ 
-  template <typename T> 
-  ExceptionSafetyTestBuilder<DefaultFactory<T>, Operation, Contracts...> 
-  WithInitialValue(const T& t) const { 
-    return WithFactory(DefaultFactory<T>(t)); 
-  } 
- 
-  /* 
-   * Returns a new ExceptionSafetyTestBuilder with the provided T factory 
-   * included. The existing factory will not be included in the newly-created 
-   * tester instance. This method is intended for use with types lacking a copy 
-   * constructor. Types that can be copy-constructed should instead use the 
-   * method tester.WithInitialValue(...). 
-   */ 
-  template <typename NewFactory> 
+    LazyContractsCount != 0 &&
+    !std::is_same<LazyFactory, UninitializedT>::value &&
+    !std::is_same<LazyOperation, UninitializedT>::value>;
+
+template <typename Factory = UninitializedT,
+          typename Operation = UninitializedT, typename... Contracts>
+class ExceptionSafetyTestBuilder;
+
+}  // namespace exceptions_internal
+
+/*
+ * Constructs an empty ExceptionSafetyTestBuilder. All
+ * ExceptionSafetyTestBuilder objects are immutable and all With[thing] mutation
+ * methods return new instances of ExceptionSafetyTestBuilder.
+ *
+ * In order to test a T for exception safety, a factory for that T, a testable
+ * operation, and at least one contract callback returning an assertion
+ * result must be applied using the respective methods.
+ */
+exceptions_internal::ExceptionSafetyTestBuilder<> MakeExceptionSafetyTester();
+
+namespace exceptions_internal {
+template <typename T>
+struct IsUniquePtr : std::false_type {};
+
+template <typename T, typename D>
+struct IsUniquePtr<std::unique_ptr<T, D>> : std::true_type {};
+
+template <typename Factory>
+struct FactoryPtrTypeHelper {
+  using type = decltype(std::declval<const Factory&>()());
+
+  static_assert(IsUniquePtr<type>::value, "Factories must return a unique_ptr");
+};
+
+template <typename Factory>
+using FactoryPtrType = typename FactoryPtrTypeHelper<Factory>::type;
+
+template <typename Factory>
+using FactoryElementType = typename FactoryPtrType<Factory>::element_type;
+
+template <typename T>
+class ExceptionSafetyTest {
+  using Factory = std::function<std::unique_ptr<T>()>;
+  using Operation = std::function<void(T*)>;
+  using Contract = std::function<AssertionResult(T*)>;
+
+ public:
+  template <typename... Contracts>
+  explicit ExceptionSafetyTest(const Factory& f, const Operation& op,
+                               const Contracts&... contracts)
+      : factory_(f), operation_(op), contracts_{WrapContract(contracts)...} {}
+
+  AssertionResult Test() const {
+    for (int count = 0;; ++count) {
+      exceptions_internal::ConstructorTracker ct(count);
+
+      for (const auto& contract : contracts_) {
+        auto t_ptr = factory_();
+        try {
+          SetCountdown(count);
+          operation_(t_ptr.get());
+          // Unset for the case that the operation throws no exceptions, which
+          // would leave the countdown set and break the *next* exception safety
+          // test after this one.
+          UnsetCountdown();
+          return AssertionSuccess();
+        } catch (const exceptions_internal::TestException& e) {
+          if (!contract(t_ptr.get())) {
+            return AssertionFailure() << e.what() << " failed contract check";
+          }
+        }
+      }
+    }
+  }
+
+ private:
+  template <typename ContractFn>
+  Contract WrapContract(const ContractFn& contract) {
+    return [contract](T* t_ptr) { return AssertionResult(contract(t_ptr)); };
+  }
+
+  Contract WrapContract(StrongGuaranteeTagType) {
+    return [this](T* t_ptr) { return AssertionResult(*factory_() == *t_ptr); };
+  }
+
+  Factory factory_;
+  Operation operation_;
+  std::vector<Contract> contracts_;
+};
+
+/*
+ * Builds a tester object that tests if performing a operation on a T follows
+ * exception safety guarantees. Verification is done via contract assertion
+ * callbacks applied to T instances post-throw.
+ *
+ * Template parameters for ExceptionSafetyTestBuilder:
+ *
+ * - Factory: The factory object (passed in via tester.WithFactory(...) or
+ *   tester.WithInitialValue(...)) must be invocable with the signature
+ *   `std::unique_ptr<T> operator()() const` where T is the type being tested.
+ *   It is used for reliably creating identical T instances to test on.
+ *
+ * - Operation: The operation object (passsed in via tester.WithOperation(...)
+ *   or tester.Test(...)) must be invocable with the signature
+ *   `void operator()(T*) const` where T is the type being tested. It is used
+ *   for performing steps on a T instance that may throw and that need to be
+ *   checked for exception safety. Each call to the operation will receive a
+ *   fresh T instance so it's free to modify and destroy the T instances as it
+ *   pleases.
+ *
+ * - Contracts...: The contract assertion callback objects (passed in via
+ *   tester.WithContracts(...)) must be invocable with the signature
+ *   `testing::AssertionResult operator()(T*) const` where T is the type being
+ *   tested. Contract assertion callbacks are provided T instances post-throw.
+ *   They must return testing::AssertionSuccess when the type contracts of the
+ *   provided T instance hold. If the type contracts of the T instance do not
+ *   hold, they must return testing::AssertionFailure. Execution order of
+ *   Contracts... is unspecified. They will each individually get a fresh T
+ *   instance so they are free to modify and destroy the T instances as they
+ *   please.
+ */
+template <typename Factory, typename Operation, typename... Contracts>
+class ExceptionSafetyTestBuilder {
+ public:
+  /*
+   * Returns a new ExceptionSafetyTestBuilder with an included T factory based
+   * on the provided T instance. The existing factory will not be included in
+   * the newly created tester instance. The created factory returns a new T
+   * instance by copy-constructing the provided const T& t.
+   *
+   * Preconditions for tester.WithInitialValue(const T& t):
+   *
+   * - The const T& t object must be copy-constructible where T is the type
+   *   being tested. For non-copy-constructible objects, use the method
+   *   tester.WithFactory(...).
+   */
+  template <typename T>
+  ExceptionSafetyTestBuilder<DefaultFactory<T>, Operation, Contracts...>
+  WithInitialValue(const T& t) const {
+    return WithFactory(DefaultFactory<T>(t));
+  }
+
+  /*
+   * Returns a new ExceptionSafetyTestBuilder with the provided T factory
+   * included. The existing factory will not be included in the newly-created
+   * tester instance. This method is intended for use with types lacking a copy
+   * constructor. Types that can be copy-constructed should instead use the
+   * method tester.WithInitialValue(...).
+   */
+  template <typename NewFactory>
   ExceptionSafetyTestBuilder<y_absl::decay_t<NewFactory>, Operation, Contracts...>
-  WithFactory(const NewFactory& new_factory) const { 
-    return {new_factory, operation_, contracts_}; 
-  } 
- 
-  /* 
-   * Returns a new ExceptionSafetyTestBuilder with the provided testable 
-   * operation included. The existing operation will not be included in the 
-   * newly created tester. 
-   */ 
-  template <typename NewOperation> 
+  WithFactory(const NewFactory& new_factory) const {
+    return {new_factory, operation_, contracts_};
+  }
+
+  /*
+   * Returns a new ExceptionSafetyTestBuilder with the provided testable
+   * operation included. The existing operation will not be included in the
+   * newly created tester.
+   */
+  template <typename NewOperation>
   ExceptionSafetyTestBuilder<Factory, y_absl::decay_t<NewOperation>, Contracts...>
-  WithOperation(const NewOperation& new_operation) const { 
-    return {factory_, new_operation, contracts_}; 
-  } 
- 
-  /* 
-   * Returns a new ExceptionSafetyTestBuilder with the provided MoreContracts... 
-   * combined with the Contracts... that were already included in the instance 
-   * on which the method was called. Contracts... cannot be removed or replaced 
-   * once added to an ExceptionSafetyTestBuilder instance. A fresh object must 
-   * be created in order to get an empty Contracts... list. 
-   * 
-   * In addition to passing in custom contract assertion callbacks, this method 
-   * accepts `testing::strong_guarantee` as an argument which checks T instances 
-   * post-throw against freshly created T instances via operator== to verify 
-   * that any state changes made during the execution of the operation were 
-   * properly rolled back. 
-   */ 
-  template <typename... MoreContracts> 
-  ExceptionSafetyTestBuilder<Factory, Operation, Contracts..., 
+  WithOperation(const NewOperation& new_operation) const {
+    return {factory_, new_operation, contracts_};
+  }
+
+  /*
+   * Returns a new ExceptionSafetyTestBuilder with the provided MoreContracts...
+   * combined with the Contracts... that were already included in the instance
+   * on which the method was called. Contracts... cannot be removed or replaced
+   * once added to an ExceptionSafetyTestBuilder instance. A fresh object must
+   * be created in order to get an empty Contracts... list.
+   *
+   * In addition to passing in custom contract assertion callbacks, this method
+   * accepts `testing::strong_guarantee` as an argument which checks T instances
+   * post-throw against freshly created T instances via operator== to verify
+   * that any state changes made during the execution of the operation were
+   * properly rolled back.
+   */
+  template <typename... MoreContracts>
+  ExceptionSafetyTestBuilder<Factory, Operation, Contracts...,
                              y_absl::decay_t<MoreContracts>...>
-  WithContracts(const MoreContracts&... more_contracts) const { 
-    return { 
-        factory_, operation_, 
+  WithContracts(const MoreContracts&... more_contracts) const {
+    return {
+        factory_, operation_,
         std::tuple_cat(contracts_, std::tuple<y_absl::decay_t<MoreContracts>...>(
-                                       more_contracts...))}; 
-  } 
- 
-  /* 
-   * Returns a testing::AssertionResult that is the reduced result of the 
-   * exception safety algorithm. The algorithm short circuits and returns 
-   * AssertionFailure after the first contract callback returns an 
-   * AssertionFailure. Otherwise, if all contract callbacks return an 
-   * AssertionSuccess, the reduced result is AssertionSuccess. 
-   * 
-   * The passed-in testable operation will not be saved in a new tester instance 
-   * nor will it modify/replace the existing tester instance. This is useful 
-   * when each operation being tested is unique and does not need to be reused. 
-   * 
-   * Preconditions for tester.Test(const NewOperation& new_operation): 
-   * 
-   * - May only be called after at least one contract assertion callback and a 
-   *   factory or initial value have been provided. 
-   */ 
-  template < 
-      typename NewOperation, 
-      typename = EnableIfTestable<sizeof...(Contracts), Factory, NewOperation>> 
-  testing::AssertionResult Test(const NewOperation& new_operation) const { 
+                                       more_contracts...))};
+  }
+
+  /*
+   * Returns a testing::AssertionResult that is the reduced result of the
+   * exception safety algorithm. The algorithm short circuits and returns
+   * AssertionFailure after the first contract callback returns an
+   * AssertionFailure. Otherwise, if all contract callbacks return an
+   * AssertionSuccess, the reduced result is AssertionSuccess.
+   *
+   * The passed-in testable operation will not be saved in a new tester instance
+   * nor will it modify/replace the existing tester instance. This is useful
+   * when each operation being tested is unique and does not need to be reused.
+   *
+   * Preconditions for tester.Test(const NewOperation& new_operation):
+   *
+   * - May only be called after at least one contract assertion callback and a
+   *   factory or initial value have been provided.
+   */
+  template <
+      typename NewOperation,
+      typename = EnableIfTestable<sizeof...(Contracts), Factory, NewOperation>>
+  testing::AssertionResult Test(const NewOperation& new_operation) const {
     return TestImpl(new_operation, y_absl::index_sequence_for<Contracts...>());
-  } 
- 
-  /* 
-   * Returns a testing::AssertionResult that is the reduced result of the 
-   * exception safety algorithm. The algorithm short circuits and returns 
-   * AssertionFailure after the first contract callback returns an 
-   * AssertionFailure. Otherwise, if all contract callbacks return an 
-   * AssertionSuccess, the reduced result is AssertionSuccess. 
-   * 
-   * Preconditions for tester.Test(): 
-   * 
-   * - May only be called after at least one contract assertion callback, a 
-   *   factory or initial value and a testable operation have been provided. 
-   */ 
-  template < 
-      typename LazyOperation = Operation, 
-      typename = EnableIfTestable<sizeof...(Contracts), Factory, LazyOperation>> 
-  testing::AssertionResult Test() const { 
-    return Test(operation_); 
-  } 
- 
- private: 
-  template <typename, typename, typename...> 
-  friend class ExceptionSafetyTestBuilder; 
- 
-  friend ExceptionSafetyTestBuilder<> testing::MakeExceptionSafetyTester(); 
- 
-  ExceptionSafetyTestBuilder() {} 
- 
-  ExceptionSafetyTestBuilder(const Factory& f, const Operation& o, 
-                             const std::tuple<Contracts...>& i) 
-      : factory_(f), operation_(o), contracts_(i) {} 
- 
-  template <typename SelectedOperation, size_t... Indices> 
-  testing::AssertionResult TestImpl(SelectedOperation selected_operation, 
+  }
+
+  /*
+   * Returns a testing::AssertionResult that is the reduced result of the
+   * exception safety algorithm. The algorithm short circuits and returns
+   * AssertionFailure after the first contract callback returns an
+   * AssertionFailure. Otherwise, if all contract callbacks return an
+   * AssertionSuccess, the reduced result is AssertionSuccess.
+   *
+   * Preconditions for tester.Test():
+   *
+   * - May only be called after at least one contract assertion callback, a
+   *   factory or initial value and a testable operation have been provided.
+   */
+  template <
+      typename LazyOperation = Operation,
+      typename = EnableIfTestable<sizeof...(Contracts), Factory, LazyOperation>>
+  testing::AssertionResult Test() const {
+    return Test(operation_);
+  }
+
+ private:
+  template <typename, typename, typename...>
+  friend class ExceptionSafetyTestBuilder;
+
+  friend ExceptionSafetyTestBuilder<> testing::MakeExceptionSafetyTester();
+
+  ExceptionSafetyTestBuilder() {}
+
+  ExceptionSafetyTestBuilder(const Factory& f, const Operation& o,
+                             const std::tuple<Contracts...>& i)
+      : factory_(f), operation_(o), contracts_(i) {}
+
+  template <typename SelectedOperation, size_t... Indices>
+  testing::AssertionResult TestImpl(SelectedOperation selected_operation,
                                     y_absl::index_sequence<Indices...>) const {
-    return ExceptionSafetyTest<FactoryElementType<Factory>>( 
-               factory_, selected_operation, std::get<Indices>(contracts_)...) 
-        .Test(); 
-  } 
- 
-  Factory factory_; 
-  Operation operation_; 
-  std::tuple<Contracts...> contracts_; 
-}; 
- 
-}  // namespace exceptions_internal 
- 
-}  // namespace testing 
- 
-#endif  // ABSL_HAVE_EXCEPTIONS 
- 
-#endif  // ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_ 
+    return ExceptionSafetyTest<FactoryElementType<Factory>>(
+               factory_, selected_operation, std::get<Indices>(contracts_)...)
+        .Test();
+  }
+
+  Factory factory_;
+  Operation operation_;
+  std::tuple<Contracts...> contracts_;
+};
+
+}  // namespace exceptions_internal
+
+}  // namespace testing
+
+#endif  // ABSL_HAVE_EXCEPTIONS
+
+#endif  // ABSL_BASE_INTERNAL_EXCEPTION_SAFETY_TESTING_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_testing.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_testing.h
index 78c8008498..f2dd04b9d6 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_testing.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/exception_testing.h
@@ -1,42 +1,42 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-// Testing utilities for ABSL types which throw exceptions. 
- 
-#ifndef ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_ 
-#define ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_ 
- 
-#include "gtest/gtest.h" 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Testing utilities for ABSL types which throw exceptions.
+
+#ifndef ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_
+#define ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_
+
+#include "gtest/gtest.h"
 #include "y_absl/base/config.h"
- 
-// ABSL_BASE_INTERNAL_EXPECT_FAIL tests either for a specified thrown exception 
-// if exceptions are enabled, or for death with a specified text in the error 
-// message 
-#ifdef ABSL_HAVE_EXCEPTIONS 
- 
-#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \ 
-  EXPECT_THROW(expr, exception_t) 
- 
-#elif defined(__ANDROID__) 
-// Android asserts do not log anywhere that gtest can currently inspect. 
-// So we expect exit, but cannot match the message. 
-#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \ 
-  EXPECT_DEATH(expr, ".*") 
-#else 
-#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \ 
-  EXPECT_DEATH_IF_SUPPORTED(expr, text) 
- 
-#endif 
- 
-#endif  // ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_ 
+
+// ABSL_BASE_INTERNAL_EXPECT_FAIL tests either for a specified thrown exception
+// if exceptions are enabled, or for death with a specified text in the error
+// message
+#ifdef ABSL_HAVE_EXCEPTIONS
+
+#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \
+  EXPECT_THROW(expr, exception_t)
+
+#elif defined(__ANDROID__)
+// Android asserts do not log anywhere that gtest can currently inspect.
+// So we expect exit, but cannot match the message.
+#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \
+  EXPECT_DEATH(expr, ".*")
+#else
+#define ABSL_BASE_INTERNAL_EXPECT_FAIL(expr, exception_t, text) \
+  EXPECT_DEATH_IF_SUPPORTED(expr, text)
+
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_EXCEPTION_TESTING_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/hide_ptr.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/hide_ptr.h
index 54bf3b1016..ccdad25cb7 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/hide_ptr.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/hide_ptr.h
@@ -1,51 +1,51 @@
-// Copyright 2018 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_HIDE_PTR_H_ 
-#define ABSL_BASE_INTERNAL_HIDE_PTR_H_ 
- 
-#include <cstdint> 
- 
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_HIDE_PTR_H_
+#define ABSL_BASE_INTERNAL_HIDE_PTR_H_
+
+#include <cstdint>
+
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// Arbitrary value with high bits set. Xor'ing with it is unlikely 
-// to map one valid pointer to another valid pointer. 
-constexpr uintptr_t HideMask() { 
-  return (uintptr_t{0xF03A5F7BU} << (sizeof(uintptr_t) - 4) * 8) | 0xF03A5F7BU; 
-} 
- 
-// Hide a pointer from the leak checker. For internal use only. 
+namespace base_internal {
+
+// Arbitrary value with high bits set. Xor'ing with it is unlikely
+// to map one valid pointer to another valid pointer.
+constexpr uintptr_t HideMask() {
+  return (uintptr_t{0xF03A5F7BU} << (sizeof(uintptr_t) - 4) * 8) | 0xF03A5F7BU;
+}
+
+// Hide a pointer from the leak checker. For internal use only.
 // Differs from y_absl::IgnoreLeak(ptr) in that y_absl::IgnoreLeak(ptr) causes ptr
-// and all objects reachable from ptr to be ignored by the leak checker. 
-template <class T> 
-inline uintptr_t HidePtr(T* ptr) { 
-  return reinterpret_cast<uintptr_t>(ptr) ^ HideMask(); 
-} 
- 
-// Return a pointer that has been hidden from the leak checker. 
-// For internal use only. 
-template <class T> 
-inline T* UnhidePtr(uintptr_t hidden) { 
-  return reinterpret_cast<T*>(hidden ^ HideMask()); 
-} 
- 
-}  // namespace base_internal 
+// and all objects reachable from ptr to be ignored by the leak checker.
+template <class T>
+inline uintptr_t HidePtr(T* ptr) {
+  return reinterpret_cast<uintptr_t>(ptr) ^ HideMask();
+}
+
+// Return a pointer that has been hidden from the leak checker.
+// For internal use only.
+template <class T>
+inline T* UnhidePtr(uintptr_t hidden) {
+  return reinterpret_cast<T*>(hidden ^ HideMask());
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_HIDE_PTR_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_HIDE_PTR_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/identity.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/identity.h
index 3a578fdd51..2360afeed2 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/identity.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/identity.h
@@ -1,37 +1,37 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_IDENTITY_H_ 
-#define ABSL_BASE_INTERNAL_IDENTITY_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_IDENTITY_H_
+#define ABSL_BASE_INTERNAL_IDENTITY_H_
+
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace internal { 
- 
-template <typename T> 
-struct identity { 
-  typedef T type; 
-}; 
- 
-template <typename T> 
-using identity_t = typename identity<T>::type; 
- 
-}  // namespace internal 
+namespace internal {
+
+template <typename T>
+struct identity {
+  typedef T type;
+};
+
+template <typename T>
+using identity_t = typename identity<T>::type;
+
+}  // namespace internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_IDENTITY_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_IDENTITY_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable.h
index b5f4195ddf..38799c5722 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable.h
@@ -1,107 +1,107 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_ 
-#define ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_ 
- 
-#include <type_traits> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
+#define ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
+
+#include <type_traits>
+
 #include "y_absl/base/internal/identity.h"
- 
-// File: 
-//   This file define a macro that allows the creation of or emulation of C++17 
-//   inline variables based on whether or not the feature is supported. 
- 
-//////////////////////////////////////////////////////////////////////////////// 
-// Macro: ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init) 
-// 
-// Description: 
-//   Expands to the equivalent of an inline constexpr instance of the specified 
-//   `type` and `name`, initialized to the value `init`. If the compiler being 
-//   used is detected as supporting actual inline variables as a language 
-//   feature, then the macro expands to an actual inline variable definition. 
-// 
-// Requires: 
-//   `type` is a type that is usable in an extern variable declaration. 
-// 
-// Requires: `name` is a valid identifier 
-// 
-// Requires: 
-//   `init` is an expression that can be used in the following definition: 
-//     constexpr type name = init; 
-// 
-// Usage: 
-// 
-//   // Equivalent to: `inline constexpr size_t variant_npos = -1;` 
-//   ABSL_INTERNAL_INLINE_CONSTEXPR(size_t, variant_npos, -1); 
-// 
-// Differences in implementation: 
-//   For a direct, language-level inline variable, decltype(name) will be the 
-//   type that was specified along with const qualification, whereas for 
-//   emulated inline variables, decltype(name) may be different (in practice 
-//   it will likely be a reference type). 
-//////////////////////////////////////////////////////////////////////////////// 
- 
-#ifdef __cpp_inline_variables 
- 
-// Clang's -Wmissing-variable-declarations option erroneously warned that 
-// inline constexpr objects need to be pre-declared. This has now been fixed, 
-// but we will need to support this workaround for people building with older 
-// versions of clang. 
-// 
-// Bug: https://bugs.llvm.org/show_bug.cgi?id=35862 
-// 
-// Note: 
-//   identity_t is used here so that the const and name are in the 
-//   appropriate place for pointer types, reference types, function pointer 
-//   types, etc.. 
-#if defined(__clang__) 
-#define ABSL_INTERNAL_EXTERN_DECL(type, name) \ 
+
+// File:
+//   This file define a macro that allows the creation of or emulation of C++17
+//   inline variables based on whether or not the feature is supported.
+
+////////////////////////////////////////////////////////////////////////////////
+// Macro: ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init)
+//
+// Description:
+//   Expands to the equivalent of an inline constexpr instance of the specified
+//   `type` and `name`, initialized to the value `init`. If the compiler being
+//   used is detected as supporting actual inline variables as a language
+//   feature, then the macro expands to an actual inline variable definition.
+//
+// Requires:
+//   `type` is a type that is usable in an extern variable declaration.
+//
+// Requires: `name` is a valid identifier
+//
+// Requires:
+//   `init` is an expression that can be used in the following definition:
+//     constexpr type name = init;
+//
+// Usage:
+//
+//   // Equivalent to: `inline constexpr size_t variant_npos = -1;`
+//   ABSL_INTERNAL_INLINE_CONSTEXPR(size_t, variant_npos, -1);
+//
+// Differences in implementation:
+//   For a direct, language-level inline variable, decltype(name) will be the
+//   type that was specified along with const qualification, whereas for
+//   emulated inline variables, decltype(name) may be different (in practice
+//   it will likely be a reference type).
+////////////////////////////////////////////////////////////////////////////////
+
+#ifdef __cpp_inline_variables
+
+// Clang's -Wmissing-variable-declarations option erroneously warned that
+// inline constexpr objects need to be pre-declared. This has now been fixed,
+// but we will need to support this workaround for people building with older
+// versions of clang.
+//
+// Bug: https://bugs.llvm.org/show_bug.cgi?id=35862
+//
+// Note:
+//   identity_t is used here so that the const and name are in the
+//   appropriate place for pointer types, reference types, function pointer
+//   types, etc..
+#if defined(__clang__)
+#define ABSL_INTERNAL_EXTERN_DECL(type, name) \
   extern const ::y_absl::internal::identity_t<type> name;
-#else  // Otherwise, just define the macro to do nothing. 
-#define ABSL_INTERNAL_EXTERN_DECL(type, name) 
-#endif  // defined(__clang__) 
- 
-// See above comment at top of file for details. 
-#define ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init) \ 
-  ABSL_INTERNAL_EXTERN_DECL(type, name)                  \ 
+#else  // Otherwise, just define the macro to do nothing.
+#define ABSL_INTERNAL_EXTERN_DECL(type, name)
+#endif  // defined(__clang__)
+
+// See above comment at top of file for details.
+#define ABSL_INTERNAL_INLINE_CONSTEXPR(type, name, init) \
+  ABSL_INTERNAL_EXTERN_DECL(type, name)                  \
   inline constexpr ::y_absl::internal::identity_t<type> name = init
- 
-#else 
- 
-// See above comment at top of file for details. 
-// 
-// Note: 
-//   identity_t is used here so that the const and name are in the 
-//   appropriate place for pointer types, reference types, function pointer 
-//   types, etc.. 
-#define ABSL_INTERNAL_INLINE_CONSTEXPR(var_type, name, init)                  \ 
-  template <class /*AbslInternalDummy*/ = void>                               \ 
-  struct AbslInternalInlineVariableHolder##name {                             \ 
+
+#else
+
+// See above comment at top of file for details.
+//
+// Note:
+//   identity_t is used here so that the const and name are in the
+//   appropriate place for pointer types, reference types, function pointer
+//   types, etc..
+#define ABSL_INTERNAL_INLINE_CONSTEXPR(var_type, name, init)                  \
+  template <class /*AbslInternalDummy*/ = void>                               \
+  struct AbslInternalInlineVariableHolder##name {                             \
     static constexpr ::y_absl::internal::identity_t<var_type> kInstance = init; \
-  };                                                                          \ 
-                                                                              \ 
-  template <class AbslInternalDummy>                                          \ 
+  };                                                                          \
+                                                                              \
+  template <class AbslInternalDummy>                                          \
   constexpr ::y_absl::internal::identity_t<var_type>                            \
-      AbslInternalInlineVariableHolder##name<AbslInternalDummy>::kInstance;   \ 
-                                                                              \ 
+      AbslInternalInlineVariableHolder##name<AbslInternalDummy>::kInstance;   \
+                                                                              \
   static constexpr const ::y_absl::internal::identity_t<var_type>&              \
-      name = /* NOLINT */                                                     \ 
-      AbslInternalInlineVariableHolder##name<>::kInstance;                    \ 
-  static_assert(sizeof(void (*)(decltype(name))) != 0,                        \ 
-                "Silence unused variable warnings.") 
- 
-#endif  // __cpp_inline_variables 
- 
-#endif  // ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_ 
+      name = /* NOLINT */                                                     \
+      AbslInternalInlineVariableHolder##name<>::kInstance;                    \
+  static_assert(sizeof(void (*)(decltype(name))) != 0,                        \
+                "Silence unused variable warnings.")
+
+#endif  // __cpp_inline_variables
+
+#endif  // ABSL_BASE_INTERNAL_INLINE_VARIABLE_EMULATION_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable_testing.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable_testing.h
index e7287d3816..190e74e643 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable_testing.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/inline_variable_testing.h
@@ -1,46 +1,46 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INLINE_VARIABLE_TESTING_H_ 
-#define ABSL_BASE_INLINE_VARIABLE_TESTING_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INLINE_VARIABLE_TESTING_H_
+#define ABSL_BASE_INLINE_VARIABLE_TESTING_H_
+
 #include "y_absl/base/internal/inline_variable.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace inline_variable_testing_internal { 
- 
-struct Foo { 
-  int value = 5; 
-}; 
- 
-ABSL_INTERNAL_INLINE_CONSTEXPR(Foo, inline_variable_foo, {}); 
-ABSL_INTERNAL_INLINE_CONSTEXPR(Foo, other_inline_variable_foo, {}); 
- 
-ABSL_INTERNAL_INLINE_CONSTEXPR(int, inline_variable_int, 5); 
-ABSL_INTERNAL_INLINE_CONSTEXPR(int, other_inline_variable_int, 5); 
- 
-ABSL_INTERNAL_INLINE_CONSTEXPR(void(*)(), inline_variable_fun_ptr, nullptr); 
- 
-const Foo& get_foo_a(); 
-const Foo& get_foo_b(); 
- 
-const int& get_int_a(); 
-const int& get_int_b(); 
- 
-}  // namespace inline_variable_testing_internal 
+namespace inline_variable_testing_internal {
+
+struct Foo {
+  int value = 5;
+};
+
+ABSL_INTERNAL_INLINE_CONSTEXPR(Foo, inline_variable_foo, {});
+ABSL_INTERNAL_INLINE_CONSTEXPR(Foo, other_inline_variable_foo, {});
+
+ABSL_INTERNAL_INLINE_CONSTEXPR(int, inline_variable_int, 5);
+ABSL_INTERNAL_INLINE_CONSTEXPR(int, other_inline_variable_int, 5);
+
+ABSL_INTERNAL_INLINE_CONSTEXPR(void(*)(), inline_variable_fun_ptr, nullptr);
+
+const Foo& get_foo_a();
+const Foo& get_foo_b();
+
+const int& get_int_a();
+const int& get_int_b();
+
+}  // namespace inline_variable_testing_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INLINE_VARIABLE_TESTING_H_ 
+
+#endif  // ABSL_BASE_INLINE_VARIABLE_TESTING_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/invoke.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/invoke.h
index 6b22ceb1bb..928666ff44 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/invoke.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/invoke.h
@@ -1,187 +1,187 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
 // y_absl::base_internal::invoke(f, args...) is an implementation of
-// INVOKE(f, args...) from section [func.require] of the C++ standard. 
-// 
-// [func.require] 
-// Define INVOKE (f, t1, t2, ..., tN) as follows: 
-// 1. (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T 
-//    and t1 is an object of type T or a reference to an object of type T or a 
-//    reference to an object of a type derived from T; 
-// 2. ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a 
-//    class T and t1 is not one of the types described in the previous item; 
-// 3. t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is 
-//    an object of type T or a reference to an object of type T or a reference 
-//    to an object of a type derived from T; 
-// 4. (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1 
-//    is not one of the types described in the previous item; 
-// 5. f(t1, t2, ..., tN) in all other cases. 
-// 
+// INVOKE(f, args...) from section [func.require] of the C++ standard.
+//
+// [func.require]
+// Define INVOKE (f, t1, t2, ..., tN) as follows:
+// 1. (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T
+//    and t1 is an object of type T or a reference to an object of type T or a
+//    reference to an object of a type derived from T;
+// 2. ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a
+//    class T and t1 is not one of the types described in the previous item;
+// 3. t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is
+//    an object of type T or a reference to an object of type T or a reference
+//    to an object of a type derived from T;
+// 4. (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1
+//    is not one of the types described in the previous item;
+// 5. f(t1, t2, ..., tN) in all other cases.
+//
 // The implementation is SFINAE-friendly: substitution failure within invoke()
-// isn't an error. 
- 
-#ifndef ABSL_BASE_INTERNAL_INVOKE_H_ 
-#define ABSL_BASE_INTERNAL_INVOKE_H_ 
- 
-#include <algorithm> 
-#include <type_traits> 
-#include <utility> 
- 
+// isn't an error.
+
+#ifndef ABSL_BASE_INTERNAL_INVOKE_H_
+#define ABSL_BASE_INTERNAL_INVOKE_H_
+
+#include <algorithm>
+#include <type_traits>
+#include <utility>
+
 #include "y_absl/meta/type_traits.h"
- 
-// The following code is internal implementation detail.  See the comment at the 
-// top of this file for the API documentation. 
- 
+
+// The following code is internal implementation detail.  See the comment at the
+// top of this file for the API documentation.
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// The five classes below each implement one of the clauses from the definition 
-// of INVOKE. The inner class template Accept<F, Args...> checks whether the 
-// clause is applicable; static function template Invoke(f, args...) does the 
-// invocation. 
-// 
-// By separating the clause selection logic from invocation we make sure that 
-// Invoke() does exactly what the standard says. 
- 
-template <typename Derived> 
-struct StrippedAccept { 
-  template <typename... Args> 
-  struct Accept : Derived::template AcceptImpl<typename std::remove_cv< 
-                      typename std::remove_reference<Args>::type>::type...> {}; 
-}; 
- 
-// (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T 
-// and t1 is an object of type T or a reference to an object of type T or a 
-// reference to an object of a type derived from T. 
-struct MemFunAndRef : StrippedAccept<MemFunAndRef> { 
-  template <typename... Args> 
-  struct AcceptImpl : std::false_type {}; 
- 
-  template <typename MemFunType, typename C, typename Obj, typename... Args> 
-  struct AcceptImpl<MemFunType C::*, Obj, Args...> 
-      : std::integral_constant<bool, std::is_base_of<C, Obj>::value && 
+namespace base_internal {
+
+// The five classes below each implement one of the clauses from the definition
+// of INVOKE. The inner class template Accept<F, Args...> checks whether the
+// clause is applicable; static function template Invoke(f, args...) does the
+// invocation.
+//
+// By separating the clause selection logic from invocation we make sure that
+// Invoke() does exactly what the standard says.
+
+template <typename Derived>
+struct StrippedAccept {
+  template <typename... Args>
+  struct Accept : Derived::template AcceptImpl<typename std::remove_cv<
+                      typename std::remove_reference<Args>::type>::type...> {};
+};
+
+// (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T
+// and t1 is an object of type T or a reference to an object of type T or a
+// reference to an object of a type derived from T.
+struct MemFunAndRef : StrippedAccept<MemFunAndRef> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename MemFunType, typename C, typename Obj, typename... Args>
+  struct AcceptImpl<MemFunType C::*, Obj, Args...>
+      : std::integral_constant<bool, std::is_base_of<C, Obj>::value &&
                                          y_absl::is_function<MemFunType>::value> {
-  }; 
- 
-  template <typename MemFun, typename Obj, typename... Args> 
-  static decltype((std::declval<Obj>().* 
-                   std::declval<MemFun>())(std::declval<Args>()...)) 
-  Invoke(MemFun&& mem_fun, Obj&& obj, Args&&... args) { 
-    return (std::forward<Obj>(obj).* 
-            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...); 
-  } 
-}; 
- 
-// ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a 
-// class T and t1 is not one of the types described in the previous item. 
-struct MemFunAndPtr : StrippedAccept<MemFunAndPtr> { 
-  template <typename... Args> 
-  struct AcceptImpl : std::false_type {}; 
- 
-  template <typename MemFunType, typename C, typename Ptr, typename... Args> 
-  struct AcceptImpl<MemFunType C::*, Ptr, Args...> 
-      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value && 
+  };
+
+  template <typename MemFun, typename Obj, typename... Args>
+  static decltype((std::declval<Obj>().*
+                   std::declval<MemFun>())(std::declval<Args>()...))
+  Invoke(MemFun&& mem_fun, Obj&& obj, Args&&... args) {
+    return (std::forward<Obj>(obj).*
+            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...);
+  }
+};
+
+// ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a
+// class T and t1 is not one of the types described in the previous item.
+struct MemFunAndPtr : StrippedAccept<MemFunAndPtr> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename MemFunType, typename C, typename Ptr, typename... Args>
+  struct AcceptImpl<MemFunType C::*, Ptr, Args...>
+      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value &&
                                          y_absl::is_function<MemFunType>::value> {
-  }; 
- 
-  template <typename MemFun, typename Ptr, typename... Args> 
-  static decltype(((*std::declval<Ptr>()).* 
-                   std::declval<MemFun>())(std::declval<Args>()...)) 
-  Invoke(MemFun&& mem_fun, Ptr&& ptr, Args&&... args) { 
-    return ((*std::forward<Ptr>(ptr)).* 
-            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...); 
-  } 
-}; 
- 
-// t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is 
-// an object of type T or a reference to an object of type T or a reference 
-// to an object of a type derived from T. 
-struct DataMemAndRef : StrippedAccept<DataMemAndRef> { 
-  template <typename... Args> 
-  struct AcceptImpl : std::false_type {}; 
- 
-  template <typename R, typename C, typename Obj> 
-  struct AcceptImpl<R C::*, Obj> 
-      : std::integral_constant<bool, std::is_base_of<C, Obj>::value && 
+  };
+
+  template <typename MemFun, typename Ptr, typename... Args>
+  static decltype(((*std::declval<Ptr>()).*
+                   std::declval<MemFun>())(std::declval<Args>()...))
+  Invoke(MemFun&& mem_fun, Ptr&& ptr, Args&&... args) {
+    return ((*std::forward<Ptr>(ptr)).*
+            std::forward<MemFun>(mem_fun))(std::forward<Args>(args)...);
+  }
+};
+
+// t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is
+// an object of type T or a reference to an object of type T or a reference
+// to an object of a type derived from T.
+struct DataMemAndRef : StrippedAccept<DataMemAndRef> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename R, typename C, typename Obj>
+  struct AcceptImpl<R C::*, Obj>
+      : std::integral_constant<bool, std::is_base_of<C, Obj>::value &&
                                          !y_absl::is_function<R>::value> {};
- 
-  template <typename DataMem, typename Ref> 
-  static decltype(std::declval<Ref>().*std::declval<DataMem>()) Invoke( 
-      DataMem&& data_mem, Ref&& ref) { 
-    return std::forward<Ref>(ref).*std::forward<DataMem>(data_mem); 
-  } 
-}; 
- 
-// (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1 
-// is not one of the types described in the previous item. 
-struct DataMemAndPtr : StrippedAccept<DataMemAndPtr> { 
-  template <typename... Args> 
-  struct AcceptImpl : std::false_type {}; 
- 
-  template <typename R, typename C, typename Ptr> 
-  struct AcceptImpl<R C::*, Ptr> 
-      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value && 
+
+  template <typename DataMem, typename Ref>
+  static decltype(std::declval<Ref>().*std::declval<DataMem>()) Invoke(
+      DataMem&& data_mem, Ref&& ref) {
+    return std::forward<Ref>(ref).*std::forward<DataMem>(data_mem);
+  }
+};
+
+// (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1
+// is not one of the types described in the previous item.
+struct DataMemAndPtr : StrippedAccept<DataMemAndPtr> {
+  template <typename... Args>
+  struct AcceptImpl : std::false_type {};
+
+  template <typename R, typename C, typename Ptr>
+  struct AcceptImpl<R C::*, Ptr>
+      : std::integral_constant<bool, !std::is_base_of<C, Ptr>::value &&
                                          !y_absl::is_function<R>::value> {};
- 
-  template <typename DataMem, typename Ptr> 
-  static decltype((*std::declval<Ptr>()).*std::declval<DataMem>()) Invoke( 
-      DataMem&& data_mem, Ptr&& ptr) { 
-    return (*std::forward<Ptr>(ptr)).*std::forward<DataMem>(data_mem); 
-  } 
-}; 
- 
-// f(t1, t2, ..., tN) in all other cases. 
-struct Callable { 
-  // Callable doesn't have Accept because it's the last clause that gets picked 
-  // when none of the previous clauses are applicable. 
-  template <typename F, typename... Args> 
-  static decltype(std::declval<F>()(std::declval<Args>()...)) Invoke( 
-      F&& f, Args&&... args) { 
-    return std::forward<F>(f)(std::forward<Args>(args)...); 
-  } 
-}; 
- 
-// Resolves to the first matching clause. 
-template <typename... Args> 
-struct Invoker { 
-  typedef typename std::conditional< 
-      MemFunAndRef::Accept<Args...>::value, MemFunAndRef, 
-      typename std::conditional< 
-          MemFunAndPtr::Accept<Args...>::value, MemFunAndPtr, 
-          typename std::conditional< 
-              DataMemAndRef::Accept<Args...>::value, DataMemAndRef, 
-              typename std::conditional<DataMemAndPtr::Accept<Args...>::value, 
-                                        DataMemAndPtr, Callable>::type>::type>:: 
-          type>::type type; 
-}; 
- 
-// The result type of Invoke<F, Args...>. 
-template <typename F, typename... Args> 
+
+  template <typename DataMem, typename Ptr>
+  static decltype((*std::declval<Ptr>()).*std::declval<DataMem>()) Invoke(
+      DataMem&& data_mem, Ptr&& ptr) {
+    return (*std::forward<Ptr>(ptr)).*std::forward<DataMem>(data_mem);
+  }
+};
+
+// f(t1, t2, ..., tN) in all other cases.
+struct Callable {
+  // Callable doesn't have Accept because it's the last clause that gets picked
+  // when none of the previous clauses are applicable.
+  template <typename F, typename... Args>
+  static decltype(std::declval<F>()(std::declval<Args>()...)) Invoke(
+      F&& f, Args&&... args) {
+    return std::forward<F>(f)(std::forward<Args>(args)...);
+  }
+};
+
+// Resolves to the first matching clause.
+template <typename... Args>
+struct Invoker {
+  typedef typename std::conditional<
+      MemFunAndRef::Accept<Args...>::value, MemFunAndRef,
+      typename std::conditional<
+          MemFunAndPtr::Accept<Args...>::value, MemFunAndPtr,
+          typename std::conditional<
+              DataMemAndRef::Accept<Args...>::value, DataMemAndRef,
+              typename std::conditional<DataMemAndPtr::Accept<Args...>::value,
+                                        DataMemAndPtr, Callable>::type>::type>::
+          type>::type type;
+};
+
+// The result type of Invoke<F, Args...>.
+template <typename F, typename... Args>
 using invoke_result_t = decltype(Invoker<F, Args...>::type::Invoke(
-    std::declval<F>(), std::declval<Args>()...)); 
- 
-// Invoke(f, args...) is an implementation of INVOKE(f, args...) from section 
-// [func.require] of the C++ standard. 
-template <typename F, typename... Args> 
+    std::declval<F>(), std::declval<Args>()...));
+
+// Invoke(f, args...) is an implementation of INVOKE(f, args...) from section
+// [func.require] of the C++ standard.
+template <typename F, typename... Args>
 invoke_result_t<F, Args...> invoke(F&& f, Args&&... args) {
-  return Invoker<F, Args...>::type::Invoke(std::forward<F>(f), 
-                                           std::forward<Args>(args)...); 
-} 
-}  // namespace base_internal 
+  return Invoker<F, Args...>::type::Invoke(std::forward<F>(f),
+                                           std::forward<Args>(args)...);
+}
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_INVOKE_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_INVOKE_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc
index 03fa309aad..0c477d1b28 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc
@@ -1,620 +1,620 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-// A low-level allocator that can be used by other low-level 
-// modules without introducing dependency cycles. 
-// This allocator is slow and wasteful of memory; 
-// it should not be used when performance is key. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// A low-level allocator that can be used by other low-level
+// modules without introducing dependency cycles.
+// This allocator is slow and wasteful of memory;
+// it should not be used when performance is key.
+
 #include "y_absl/base/internal/low_level_alloc.h"
- 
-#include <type_traits> 
- 
+
+#include <type_traits>
+
 #include "y_absl/base/call_once.h"
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/direct_mmap.h"
 #include "y_absl/base/internal/scheduling_mode.h"
 #include "y_absl/base/macros.h"
 #include "y_absl/base/thread_annotations.h"
- 
-// LowLevelAlloc requires that the platform support low-level 
-// allocation of virtual memory. Platforms lacking this cannot use 
-// LowLevelAlloc. 
-#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING 
- 
-#ifndef _WIN32 
-#include <pthread.h> 
-#include <signal.h> 
-#include <sys/mman.h> 
-#include <unistd.h> 
-#else 
-#include <windows.h> 
-#endif 
- 
-#include <string.h> 
-#include <algorithm> 
-#include <atomic> 
-#include <cerrno> 
-#include <cstddef> 
-#include <new>                   // for placement-new 
- 
+
+// LowLevelAlloc requires that the platform support low-level
+// allocation of virtual memory. Platforms lacking this cannot use
+// LowLevelAlloc.
+#ifndef ABSL_LOW_LEVEL_ALLOC_MISSING
+
+#ifndef _WIN32
+#include <pthread.h>
+#include <signal.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#else
+#include <windows.h>
+#endif
+
+#include <string.h>
+#include <algorithm>
+#include <atomic>
+#include <cerrno>
+#include <cstddef>
+#include <new>                   // for placement-new
+
 #include "y_absl/base/dynamic_annotations.h"
 #include "y_absl/base/internal/raw_logging.h"
 #include "y_absl/base/internal/spinlock.h"
- 
-// MAP_ANONYMOUS 
-#if defined(__APPLE__) 
-// For mmap, Linux defines both MAP_ANONYMOUS and MAP_ANON and says MAP_ANON is 
-// deprecated. In Darwin, MAP_ANON is all there is. 
-#if !defined MAP_ANONYMOUS 
-#define MAP_ANONYMOUS MAP_ANON 
-#endif  // !MAP_ANONYMOUS 
-#endif  // __APPLE__ 
- 
+
+// MAP_ANONYMOUS
+#if defined(__APPLE__)
+// For mmap, Linux defines both MAP_ANONYMOUS and MAP_ANON and says MAP_ANON is
+// deprecated. In Darwin, MAP_ANON is all there is.
+#if !defined MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif  // !MAP_ANONYMOUS
+#endif  // __APPLE__
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// A first-fit allocator with amortized logarithmic free() time. 
- 
-// --------------------------------------------------------------------------- 
-static const int kMaxLevel = 30; 
- 
-namespace { 
-// This struct describes one allocated block, or one free block. 
-struct AllocList { 
-  struct Header { 
-    // Size of entire region, including this field. Must be 
-    // first. Valid in both allocated and unallocated blocks. 
-    uintptr_t size; 
- 
-    // kMagicAllocated or kMagicUnallocated xor this. 
-    uintptr_t magic; 
- 
-    // Pointer to parent arena. 
-    LowLevelAlloc::Arena *arena; 
- 
-    // Aligns regions to 0 mod 2*sizeof(void*). 
-    void *dummy_for_alignment; 
-  } header; 
- 
-  // Next two fields: in unallocated blocks: freelist skiplist data 
-  //                  in allocated blocks: overlaps with client data 
- 
-  // Levels in skiplist used. 
-  int levels; 
- 
-  // Actually has levels elements. The AllocList node may not have room 
-  // for all kMaxLevel entries. See max_fit in LLA_SkiplistLevels(). 
-  AllocList *next[kMaxLevel]; 
-}; 
-}  // namespace 
- 
-// --------------------------------------------------------------------------- 
-// A trivial skiplist implementation.  This is used to keep the freelist 
-// in address order while taking only logarithmic time per insert and delete. 
- 
-// An integer approximation of log2(size/base) 
-// Requires size >= base. 
-static int IntLog2(size_t size, size_t base) { 
-  int result = 0; 
-  for (size_t i = size; i > base; i >>= 1) {  // i == floor(size/2**result) 
-    result++; 
-  } 
-  //    floor(size / 2**result) <= base < floor(size / 2**(result-1)) 
-  // =>     log2(size/(base+1)) <= result < 1+log2(size/base) 
-  // => result ~= log2(size/base) 
-  return result; 
-} 
- 
-// Return a random integer n:  p(n)=1/(2**n) if 1 <= n; p(n)=0 if n < 1. 
-static int Random(uint32_t *state) { 
-  uint32_t r = *state; 
-  int result = 1; 
-  while ((((r = r*1103515245 + 12345) >> 30) & 1) == 0) { 
-    result++; 
-  } 
-  *state = r; 
-  return result; 
-} 
- 
-// Return a number of skiplist levels for a node of size bytes, where 
-// base is the minimum node size.  Compute level=log2(size / base)+n 
-// where n is 1 if random is false and otherwise a random number generated with 
-// the standard distribution for a skiplist:  See Random() above. 
-// Bigger nodes tend to have more skiplist levels due to the log2(size / base) 
-// term, so first-fit searches touch fewer nodes.  "level" is clipped so 
-// level<kMaxLevel and next[level-1] will fit in the node. 
-// 0 < LLA_SkiplistLevels(x,y,false) <= LLA_SkiplistLevels(x,y,true) < kMaxLevel 
-static int LLA_SkiplistLevels(size_t size, size_t base, uint32_t *random) { 
-  // max_fit is the maximum number of levels that will fit in a node for the 
-  // given size.   We can't return more than max_fit, no matter what the 
-  // random number generator says. 
-  size_t max_fit = (size - offsetof(AllocList, next)) / sizeof(AllocList *); 
-  int level = IntLog2(size, base) + (random != nullptr ? Random(random) : 1); 
-  if (static_cast<size_t>(level) > max_fit) level = static_cast<int>(max_fit); 
-  if (level > kMaxLevel-1) level = kMaxLevel - 1; 
-  ABSL_RAW_CHECK(level >= 1, "block not big enough for even one level"); 
-  return level; 
-} 
- 
-// Return "atleast", the first element of AllocList *head s.t. *atleast >= *e. 
-// For 0 <= i < head->levels, set prev[i] to "no_greater", where no_greater 
-// points to the last element at level i in the AllocList less than *e, or is 
-// head if no such element exists. 
-static AllocList *LLA_SkiplistSearch(AllocList *head, 
-                                     AllocList *e, AllocList **prev) { 
-  AllocList *p = head; 
-  for (int level = head->levels - 1; level >= 0; level--) { 
-    for (AllocList *n; (n = p->next[level]) != nullptr && n < e; p = n) { 
-    } 
-    prev[level] = p; 
-  } 
-  return (head->levels == 0) ? nullptr : prev[0]->next[0]; 
-} 
- 
-// Insert element *e into AllocList *head.  Set prev[] as LLA_SkiplistSearch. 
-// Requires that e->levels be previously set by the caller (using 
-// LLA_SkiplistLevels()) 
-static void LLA_SkiplistInsert(AllocList *head, AllocList *e, 
-                               AllocList **prev) { 
-  LLA_SkiplistSearch(head, e, prev); 
-  for (; head->levels < e->levels; head->levels++) {  // extend prev pointers 
-    prev[head->levels] = head;                        // to all *e's levels 
-  } 
-  for (int i = 0; i != e->levels; i++) {  // add element to list 
-    e->next[i] = prev[i]->next[i]; 
-    prev[i]->next[i] = e; 
-  } 
-} 
- 
-// Remove element *e from AllocList *head.  Set prev[] as LLA_SkiplistSearch(). 
-// Requires that e->levels be previous set by the caller (using 
-// LLA_SkiplistLevels()) 
-static void LLA_SkiplistDelete(AllocList *head, AllocList *e, 
-                               AllocList **prev) { 
-  AllocList *found = LLA_SkiplistSearch(head, e, prev); 
-  ABSL_RAW_CHECK(e == found, "element not in freelist"); 
-  for (int i = 0; i != e->levels && prev[i]->next[i] == e; i++) { 
-    prev[i]->next[i] = e->next[i]; 
-  } 
-  while (head->levels > 0 && head->next[head->levels - 1] == nullptr) { 
-    head->levels--;   // reduce head->levels if level unused 
-  } 
-} 
- 
-// --------------------------------------------------------------------------- 
-// Arena implementation 
- 
-// Metadata for an LowLevelAlloc arena instance. 
-struct LowLevelAlloc::Arena { 
-  // Constructs an arena with the given LowLevelAlloc flags. 
-  explicit Arena(uint32_t flags_value); 
- 
-  base_internal::SpinLock mu; 
-  // Head of free list, sorted by address 
-  AllocList freelist ABSL_GUARDED_BY(mu); 
-  // Count of allocated blocks 
-  int32_t allocation_count ABSL_GUARDED_BY(mu); 
-  // flags passed to NewArena 
-  const uint32_t flags; 
-  // Result of sysconf(_SC_PAGESIZE) 
-  const size_t pagesize; 
-  // Lowest power of two >= max(16, sizeof(AllocList)) 
-  const size_t round_up; 
-  // Smallest allocation block size 
-  const size_t min_size; 
-  // PRNG state 
-  uint32_t random ABSL_GUARDED_BY(mu); 
-}; 
- 
-namespace { 
-// Static storage space for the lazily-constructed, default global arena 
-// instances.  We require this space because the whole point of LowLevelAlloc 
-// is to avoid relying on malloc/new. 
+namespace base_internal {
+
+// A first-fit allocator with amortized logarithmic free() time.
+
+// ---------------------------------------------------------------------------
+static const int kMaxLevel = 30;
+
+namespace {
+// This struct describes one allocated block, or one free block.
+struct AllocList {
+  struct Header {
+    // Size of entire region, including this field. Must be
+    // first. Valid in both allocated and unallocated blocks.
+    uintptr_t size;
+
+    // kMagicAllocated or kMagicUnallocated xor this.
+    uintptr_t magic;
+
+    // Pointer to parent arena.
+    LowLevelAlloc::Arena *arena;
+
+    // Aligns regions to 0 mod 2*sizeof(void*).
+    void *dummy_for_alignment;
+  } header;
+
+  // Next two fields: in unallocated blocks: freelist skiplist data
+  //                  in allocated blocks: overlaps with client data
+
+  // Levels in skiplist used.
+  int levels;
+
+  // Actually has levels elements. The AllocList node may not have room
+  // for all kMaxLevel entries. See max_fit in LLA_SkiplistLevels().
+  AllocList *next[kMaxLevel];
+};
+}  // namespace
+
+// ---------------------------------------------------------------------------
+// A trivial skiplist implementation.  This is used to keep the freelist
+// in address order while taking only logarithmic time per insert and delete.
+
+// An integer approximation of log2(size/base)
+// Requires size >= base.
+static int IntLog2(size_t size, size_t base) {
+  int result = 0;
+  for (size_t i = size; i > base; i >>= 1) {  // i == floor(size/2**result)
+    result++;
+  }
+  //    floor(size / 2**result) <= base < floor(size / 2**(result-1))
+  // =>     log2(size/(base+1)) <= result < 1+log2(size/base)
+  // => result ~= log2(size/base)
+  return result;
+}
+
+// Return a random integer n:  p(n)=1/(2**n) if 1 <= n; p(n)=0 if n < 1.
+static int Random(uint32_t *state) {
+  uint32_t r = *state;
+  int result = 1;
+  while ((((r = r*1103515245 + 12345) >> 30) & 1) == 0) {
+    result++;
+  }
+  *state = r;
+  return result;
+}
+
+// Return a number of skiplist levels for a node of size bytes, where
+// base is the minimum node size.  Compute level=log2(size / base)+n
+// where n is 1 if random is false and otherwise a random number generated with
+// the standard distribution for a skiplist:  See Random() above.
+// Bigger nodes tend to have more skiplist levels due to the log2(size / base)
+// term, so first-fit searches touch fewer nodes.  "level" is clipped so
+// level<kMaxLevel and next[level-1] will fit in the node.
+// 0 < LLA_SkiplistLevels(x,y,false) <= LLA_SkiplistLevels(x,y,true) < kMaxLevel
+static int LLA_SkiplistLevels(size_t size, size_t base, uint32_t *random) {
+  // max_fit is the maximum number of levels that will fit in a node for the
+  // given size.   We can't return more than max_fit, no matter what the
+  // random number generator says.
+  size_t max_fit = (size - offsetof(AllocList, next)) / sizeof(AllocList *);
+  int level = IntLog2(size, base) + (random != nullptr ? Random(random) : 1);
+  if (static_cast<size_t>(level) > max_fit) level = static_cast<int>(max_fit);
+  if (level > kMaxLevel-1) level = kMaxLevel - 1;
+  ABSL_RAW_CHECK(level >= 1, "block not big enough for even one level");
+  return level;
+}
+
+// Return "atleast", the first element of AllocList *head s.t. *atleast >= *e.
+// For 0 <= i < head->levels, set prev[i] to "no_greater", where no_greater
+// points to the last element at level i in the AllocList less than *e, or is
+// head if no such element exists.
+static AllocList *LLA_SkiplistSearch(AllocList *head,
+                                     AllocList *e, AllocList **prev) {
+  AllocList *p = head;
+  for (int level = head->levels - 1; level >= 0; level--) {
+    for (AllocList *n; (n = p->next[level]) != nullptr && n < e; p = n) {
+    }
+    prev[level] = p;
+  }
+  return (head->levels == 0) ? nullptr : prev[0]->next[0];
+}
+
+// Insert element *e into AllocList *head.  Set prev[] as LLA_SkiplistSearch.
+// Requires that e->levels be previously set by the caller (using
+// LLA_SkiplistLevels())
+static void LLA_SkiplistInsert(AllocList *head, AllocList *e,
+                               AllocList **prev) {
+  LLA_SkiplistSearch(head, e, prev);
+  for (; head->levels < e->levels; head->levels++) {  // extend prev pointers
+    prev[head->levels] = head;                        // to all *e's levels
+  }
+  for (int i = 0; i != e->levels; i++) {  // add element to list
+    e->next[i] = prev[i]->next[i];
+    prev[i]->next[i] = e;
+  }
+}
+
+// Remove element *e from AllocList *head.  Set prev[] as LLA_SkiplistSearch().
+// Requires that e->levels be previous set by the caller (using
+// LLA_SkiplistLevels())
+static void LLA_SkiplistDelete(AllocList *head, AllocList *e,
+                               AllocList **prev) {
+  AllocList *found = LLA_SkiplistSearch(head, e, prev);
+  ABSL_RAW_CHECK(e == found, "element not in freelist");
+  for (int i = 0; i != e->levels && prev[i]->next[i] == e; i++) {
+    prev[i]->next[i] = e->next[i];
+  }
+  while (head->levels > 0 && head->next[head->levels - 1] == nullptr) {
+    head->levels--;   // reduce head->levels if level unused
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Arena implementation
+
+// Metadata for an LowLevelAlloc arena instance.
+struct LowLevelAlloc::Arena {
+  // Constructs an arena with the given LowLevelAlloc flags.
+  explicit Arena(uint32_t flags_value);
+
+  base_internal::SpinLock mu;
+  // Head of free list, sorted by address
+  AllocList freelist ABSL_GUARDED_BY(mu);
+  // Count of allocated blocks
+  int32_t allocation_count ABSL_GUARDED_BY(mu);
+  // flags passed to NewArena
+  const uint32_t flags;
+  // Result of sysconf(_SC_PAGESIZE)
+  const size_t pagesize;
+  // Lowest power of two >= max(16, sizeof(AllocList))
+  const size_t round_up;
+  // Smallest allocation block size
+  const size_t min_size;
+  // PRNG state
+  uint32_t random ABSL_GUARDED_BY(mu);
+};
+
+namespace {
+// Static storage space for the lazily-constructed, default global arena
+// instances.  We require this space because the whole point of LowLevelAlloc
+// is to avoid relying on malloc/new.
 alignas(LowLevelAlloc::Arena) unsigned char default_arena_storage[sizeof(
     LowLevelAlloc::Arena)];
 alignas(LowLevelAlloc::Arena) unsigned char unhooked_arena_storage[sizeof(
     LowLevelAlloc::Arena)];
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
 alignas(
     LowLevelAlloc::Arena) unsigned char unhooked_async_sig_safe_arena_storage
     [sizeof(LowLevelAlloc::Arena)];
-#endif 
- 
-// We must use LowLevelCallOnce here to construct the global arenas, rather than 
-// using function-level statics, to avoid recursively invoking the scheduler. 
+#endif
+
+// We must use LowLevelCallOnce here to construct the global arenas, rather than
+// using function-level statics, to avoid recursively invoking the scheduler.
 y_absl::once_flag create_globals_once;
- 
-void CreateGlobalArenas() { 
-  new (&default_arena_storage) 
-      LowLevelAlloc::Arena(LowLevelAlloc::kCallMallocHook); 
-  new (&unhooked_arena_storage) LowLevelAlloc::Arena(0); 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-  new (&unhooked_async_sig_safe_arena_storage) 
-      LowLevelAlloc::Arena(LowLevelAlloc::kAsyncSignalSafe); 
-#endif 
-} 
- 
-// Returns a global arena that does not call into hooks.  Used by NewArena() 
-// when kCallMallocHook is not set. 
-LowLevelAlloc::Arena* UnhookedArena() { 
-  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas); 
-  return reinterpret_cast<LowLevelAlloc::Arena*>(&unhooked_arena_storage); 
-} 
- 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-// Returns a global arena that is async-signal safe.  Used by NewArena() when 
-// kAsyncSignalSafe is set. 
-LowLevelAlloc::Arena *UnhookedAsyncSigSafeArena() { 
-  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas); 
-  return reinterpret_cast<LowLevelAlloc::Arena *>( 
-      &unhooked_async_sig_safe_arena_storage); 
-} 
-#endif 
- 
-}  // namespace 
- 
-// Returns the default arena, as used by LowLevelAlloc::Alloc() and friends. 
-LowLevelAlloc::Arena *LowLevelAlloc::DefaultArena() { 
-  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas); 
-  return reinterpret_cast<LowLevelAlloc::Arena*>(&default_arena_storage); 
-} 
- 
-// magic numbers to identify allocated and unallocated blocks 
-static const uintptr_t kMagicAllocated = 0x4c833e95U; 
-static const uintptr_t kMagicUnallocated = ~kMagicAllocated; 
- 
-namespace { 
-class ABSL_SCOPED_LOCKABLE ArenaLock { 
- public: 
-  explicit ArenaLock(LowLevelAlloc::Arena *arena) 
-      ABSL_EXCLUSIVE_LOCK_FUNCTION(arena->mu) 
-      : arena_(arena) { 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) { 
-      sigset_t all; 
-      sigfillset(&all); 
-      mask_valid_ = pthread_sigmask(SIG_BLOCK, &all, &mask_) == 0; 
-    } 
-#endif 
-    arena_->mu.Lock(); 
-  } 
-  ~ArenaLock() { ABSL_RAW_CHECK(left_, "haven't left Arena region"); } 
-  void Leave() ABSL_UNLOCK_FUNCTION() { 
-    arena_->mu.Unlock(); 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-    if (mask_valid_) { 
-      const int err = pthread_sigmask(SIG_SETMASK, &mask_, nullptr); 
-      if (err != 0) { 
-        ABSL_RAW_LOG(FATAL, "pthread_sigmask failed: %d", err); 
-      } 
-    } 
-#endif 
-    left_ = true; 
-  } 
- 
- private: 
-  bool left_ = false;  // whether left region 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-  bool mask_valid_ = false; 
-  sigset_t mask_;  // old mask of blocked signals 
-#endif 
-  LowLevelAlloc::Arena *arena_; 
-  ArenaLock(const ArenaLock &) = delete; 
-  ArenaLock &operator=(const ArenaLock &) = delete; 
-}; 
-}  // namespace 
- 
-// create an appropriate magic number for an object at "ptr" 
-// "magic" should be kMagicAllocated or kMagicUnallocated 
-inline static uintptr_t Magic(uintptr_t magic, AllocList::Header *ptr) { 
-  return magic ^ reinterpret_cast<uintptr_t>(ptr); 
-} 
- 
-namespace { 
-size_t GetPageSize() { 
-#ifdef _WIN32 
-  SYSTEM_INFO system_info; 
-  GetSystemInfo(&system_info); 
-  return std::max(system_info.dwPageSize, system_info.dwAllocationGranularity); 
-#elif defined(__wasm__) || defined(__asmjs__) 
-  return getpagesize(); 
-#else 
-  return sysconf(_SC_PAGESIZE); 
-#endif 
-} 
- 
-size_t RoundedUpBlockSize() { 
-  // Round up block sizes to a power of two close to the header size. 
-  size_t round_up = 16; 
-  while (round_up < sizeof(AllocList::Header)) { 
-    round_up += round_up; 
-  } 
-  return round_up; 
-} 
- 
-}  // namespace 
- 
-LowLevelAlloc::Arena::Arena(uint32_t flags_value) 
-    : mu(base_internal::SCHEDULE_KERNEL_ONLY), 
-      allocation_count(0), 
-      flags(flags_value), 
-      pagesize(GetPageSize()), 
-      round_up(RoundedUpBlockSize()), 
-      min_size(2 * round_up), 
-      random(0) { 
-  freelist.header.size = 0; 
-  freelist.header.magic = 
-      Magic(kMagicUnallocated, &freelist.header); 
-  freelist.header.arena = this; 
-  freelist.levels = 0; 
-  memset(freelist.next, 0, sizeof(freelist.next)); 
-} 
- 
-// L < meta_data_arena->mu 
-LowLevelAlloc::Arena *LowLevelAlloc::NewArena(int32_t flags) { 
-  Arena *meta_data_arena = DefaultArena(); 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-  if ((flags & LowLevelAlloc::kAsyncSignalSafe) != 0) { 
-    meta_data_arena = UnhookedAsyncSigSafeArena(); 
-  } else  // NOLINT(readability/braces) 
-#endif 
-      if ((flags & LowLevelAlloc::kCallMallocHook) == 0) { 
-    meta_data_arena = UnhookedArena(); 
-  } 
-  Arena *result = 
-    new (AllocWithArena(sizeof (*result), meta_data_arena)) Arena(flags); 
-  return result; 
-} 
- 
-// L < arena->mu, L < arena->arena->mu 
-bool LowLevelAlloc::DeleteArena(Arena *arena) { 
-  ABSL_RAW_CHECK( 
-      arena != nullptr && arena != DefaultArena() && arena != UnhookedArena(), 
-      "may not delete default arena"); 
-  ArenaLock section(arena); 
-  if (arena->allocation_count != 0) { 
-    section.Leave(); 
-    return false; 
-  } 
-  while (arena->freelist.next[0] != nullptr) { 
-    AllocList *region = arena->freelist.next[0]; 
-    size_t size = region->header.size; 
-    arena->freelist.next[0] = region->next[0]; 
-    ABSL_RAW_CHECK( 
-        region->header.magic == Magic(kMagicUnallocated, &region->header), 
-        "bad magic number in DeleteArena()"); 
-    ABSL_RAW_CHECK(region->header.arena == arena, 
-                   "bad arena pointer in DeleteArena()"); 
-    ABSL_RAW_CHECK(size % arena->pagesize == 0, 
-                   "empty arena has non-page-aligned block size"); 
-    ABSL_RAW_CHECK(reinterpret_cast<uintptr_t>(region) % arena->pagesize == 0, 
-                   "empty arena has non-page-aligned block"); 
-    int munmap_result; 
-#ifdef _WIN32 
-    munmap_result = VirtualFree(region, 0, MEM_RELEASE); 
-    ABSL_RAW_CHECK(munmap_result != 0, 
-                   "LowLevelAlloc::DeleteArena: VitualFree failed"); 
-#else 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) == 0) { 
-      munmap_result = munmap(region, size); 
-    } else { 
-      munmap_result = base_internal::DirectMunmap(region, size); 
-    } 
-#else 
-    munmap_result = munmap(region, size); 
-#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-    if (munmap_result != 0) { 
-      ABSL_RAW_LOG(FATAL, "LowLevelAlloc::DeleteArena: munmap failed: %d", 
-                   errno); 
-    } 
-#endif  // _WIN32 
-  } 
-  section.Leave(); 
-  arena->~Arena(); 
-  Free(arena); 
-  return true; 
-} 
- 
-// --------------------------------------------------------------------------- 
- 
-// Addition, checking for overflow.  The intent is to die if an external client 
-// manages to push through a request that would cause arithmetic to fail. 
-static inline uintptr_t CheckedAdd(uintptr_t a, uintptr_t b) { 
-  uintptr_t sum = a + b; 
-  ABSL_RAW_CHECK(sum >= a, "LowLevelAlloc arithmetic overflow"); 
-  return sum; 
-} 
- 
-// Return value rounded up to next multiple of align. 
-// align must be a power of two. 
-static inline uintptr_t RoundUp(uintptr_t addr, uintptr_t align) { 
-  return CheckedAdd(addr, align - 1) & ~(align - 1); 
-} 
- 
-// Equivalent to "return prev->next[i]" but with sanity checking 
-// that the freelist is in the correct order, that it 
-// consists of regions marked "unallocated", and that no two regions 
-// are adjacent in memory (they should have been coalesced). 
-// L >= arena->mu 
-static AllocList *Next(int i, AllocList *prev, LowLevelAlloc::Arena *arena) { 
-  ABSL_RAW_CHECK(i < prev->levels, "too few levels in Next()"); 
-  AllocList *next = prev->next[i]; 
-  if (next != nullptr) { 
-    ABSL_RAW_CHECK( 
-        next->header.magic == Magic(kMagicUnallocated, &next->header), 
-        "bad magic number in Next()"); 
-    ABSL_RAW_CHECK(next->header.arena == arena, "bad arena pointer in Next()"); 
-    if (prev != &arena->freelist) { 
-      ABSL_RAW_CHECK(prev < next, "unordered freelist"); 
-      ABSL_RAW_CHECK(reinterpret_cast<char *>(prev) + prev->header.size < 
-                         reinterpret_cast<char *>(next), 
-                     "malformed freelist"); 
-    } 
-  } 
-  return next; 
-} 
- 
-// Coalesce list item "a" with its successor if they are adjacent. 
-static void Coalesce(AllocList *a) { 
-  AllocList *n = a->next[0]; 
-  if (n != nullptr && reinterpret_cast<char *>(a) + a->header.size == 
-                          reinterpret_cast<char *>(n)) { 
-    LowLevelAlloc::Arena *arena = a->header.arena; 
-    a->header.size += n->header.size; 
-    n->header.magic = 0; 
-    n->header.arena = nullptr; 
-    AllocList *prev[kMaxLevel]; 
-    LLA_SkiplistDelete(&arena->freelist, n, prev); 
-    LLA_SkiplistDelete(&arena->freelist, a, prev); 
-    a->levels = LLA_SkiplistLevels(a->header.size, arena->min_size, 
-                                   &arena->random); 
-    LLA_SkiplistInsert(&arena->freelist, a, prev); 
-  } 
-} 
- 
-// Adds block at location "v" to the free list 
-// L >= arena->mu 
-static void AddToFreelist(void *v, LowLevelAlloc::Arena *arena) { 
-  AllocList *f = reinterpret_cast<AllocList *>( 
-                        reinterpret_cast<char *>(v) - sizeof (f->header)); 
-  ABSL_RAW_CHECK(f->header.magic == Magic(kMagicAllocated, &f->header), 
-                 "bad magic number in AddToFreelist()"); 
-  ABSL_RAW_CHECK(f->header.arena == arena, 
-                 "bad arena pointer in AddToFreelist()"); 
-  f->levels = LLA_SkiplistLevels(f->header.size, arena->min_size, 
-                                 &arena->random); 
-  AllocList *prev[kMaxLevel]; 
-  LLA_SkiplistInsert(&arena->freelist, f, prev); 
-  f->header.magic = Magic(kMagicUnallocated, &f->header); 
-  Coalesce(f);                  // maybe coalesce with successor 
-  Coalesce(prev[0]);            // maybe coalesce with predecessor 
-} 
- 
-// Frees storage allocated by LowLevelAlloc::Alloc(). 
-// L < arena->mu 
-void LowLevelAlloc::Free(void *v) { 
-  if (v != nullptr) { 
-    AllocList *f = reinterpret_cast<AllocList *>( 
-                        reinterpret_cast<char *>(v) - sizeof (f->header)); 
-    LowLevelAlloc::Arena *arena = f->header.arena; 
-    ArenaLock section(arena); 
-    AddToFreelist(v, arena); 
-    ABSL_RAW_CHECK(arena->allocation_count > 0, "nothing in arena to free"); 
-    arena->allocation_count--; 
-    section.Leave(); 
-  } 
-} 
- 
-// allocates and returns a block of size bytes, to be freed with Free() 
-// L < arena->mu 
-static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) { 
-  void *result = nullptr; 
-  if (request != 0) { 
-    AllocList *s;       // will point to region that satisfies request 
-    ArenaLock section(arena); 
-    // round up with header 
-    size_t req_rnd = RoundUp(CheckedAdd(request, sizeof (s->header)), 
-                             arena->round_up); 
-    for (;;) {      // loop until we find a suitable region 
-      // find the minimum levels that a block of this size must have 
-      int i = LLA_SkiplistLevels(req_rnd, arena->min_size, nullptr) - 1; 
-      if (i < arena->freelist.levels) {   // potential blocks exist 
-        AllocList *before = &arena->freelist;  // predecessor of s 
-        while ((s = Next(i, before, arena)) != nullptr && 
-               s->header.size < req_rnd) { 
-          before = s; 
-        } 
-        if (s != nullptr) {       // we found a region 
-          break; 
-        } 
-      } 
-      // we unlock before mmap() both because mmap() may call a callback hook, 
-      // and because it may be slow. 
-      arena->mu.Unlock(); 
-      // mmap generous 64K chunks to decrease 
-      // the chances/impact of fragmentation: 
-      size_t new_pages_size = RoundUp(req_rnd, arena->pagesize * 16); 
-      void *new_pages; 
-#ifdef _WIN32 
-      new_pages = VirtualAlloc(0, new_pages_size, 
-                               MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); 
-      ABSL_RAW_CHECK(new_pages != nullptr, "VirtualAlloc failed"); 
-#else 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-      if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) { 
-        new_pages = base_internal::DirectMmap(nullptr, new_pages_size, 
-            PROT_WRITE|PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 
-      } else { 
-        new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ, 
-                         MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); 
-      } 
-#else 
-      new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ, 
-                       MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); 
-#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-      if (new_pages == MAP_FAILED) { 
-        ABSL_RAW_LOG(FATAL, "mmap error: %d", errno); 
-      } 
- 
-#endif  // _WIN32 
-      arena->mu.Lock(); 
-      s = reinterpret_cast<AllocList *>(new_pages); 
-      s->header.size = new_pages_size; 
-      // Pretend the block is allocated; call AddToFreelist() to free it. 
-      s->header.magic = Magic(kMagicAllocated, &s->header); 
-      s->header.arena = arena; 
-      AddToFreelist(&s->levels, arena);  // insert new region into free list 
-    } 
-    AllocList *prev[kMaxLevel]; 
-    LLA_SkiplistDelete(&arena->freelist, s, prev);    // remove from free list 
-    // s points to the first free region that's big enough 
-    if (CheckedAdd(req_rnd, arena->min_size) <= s->header.size) { 
-      // big enough to split 
-      AllocList *n = reinterpret_cast<AllocList *> 
-                        (req_rnd + reinterpret_cast<char *>(s)); 
-      n->header.size = s->header.size - req_rnd; 
-      n->header.magic = Magic(kMagicAllocated, &n->header); 
-      n->header.arena = arena; 
-      s->header.size = req_rnd; 
-      AddToFreelist(&n->levels, arena); 
-    } 
-    s->header.magic = Magic(kMagicAllocated, &s->header); 
-    ABSL_RAW_CHECK(s->header.arena == arena, ""); 
-    arena->allocation_count++; 
-    section.Leave(); 
-    result = &s->levels; 
-  } 
+
+void CreateGlobalArenas() {
+  new (&default_arena_storage)
+      LowLevelAlloc::Arena(LowLevelAlloc::kCallMallocHook);
+  new (&unhooked_arena_storage) LowLevelAlloc::Arena(0);
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  new (&unhooked_async_sig_safe_arena_storage)
+      LowLevelAlloc::Arena(LowLevelAlloc::kAsyncSignalSafe);
+#endif
+}
+
+// Returns a global arena that does not call into hooks.  Used by NewArena()
+// when kCallMallocHook is not set.
+LowLevelAlloc::Arena* UnhookedArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena*>(&unhooked_arena_storage);
+}
+
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+// Returns a global arena that is async-signal safe.  Used by NewArena() when
+// kAsyncSignalSafe is set.
+LowLevelAlloc::Arena *UnhookedAsyncSigSafeArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena *>(
+      &unhooked_async_sig_safe_arena_storage);
+}
+#endif
+
+}  // namespace
+
+// Returns the default arena, as used by LowLevelAlloc::Alloc() and friends.
+LowLevelAlloc::Arena *LowLevelAlloc::DefaultArena() {
+  base_internal::LowLevelCallOnce(&create_globals_once, CreateGlobalArenas);
+  return reinterpret_cast<LowLevelAlloc::Arena*>(&default_arena_storage);
+}
+
+// magic numbers to identify allocated and unallocated blocks
+static const uintptr_t kMagicAllocated = 0x4c833e95U;
+static const uintptr_t kMagicUnallocated = ~kMagicAllocated;
+
+namespace {
+class ABSL_SCOPED_LOCKABLE ArenaLock {
+ public:
+  explicit ArenaLock(LowLevelAlloc::Arena *arena)
+      ABSL_EXCLUSIVE_LOCK_FUNCTION(arena->mu)
+      : arena_(arena) {
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+      sigset_t all;
+      sigfillset(&all);
+      mask_valid_ = pthread_sigmask(SIG_BLOCK, &all, &mask_) == 0;
+    }
+#endif
+    arena_->mu.Lock();
+  }
+  ~ArenaLock() { ABSL_RAW_CHECK(left_, "haven't left Arena region"); }
+  void Leave() ABSL_UNLOCK_FUNCTION() {
+    arena_->mu.Unlock();
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if (mask_valid_) {
+      const int err = pthread_sigmask(SIG_SETMASK, &mask_, nullptr);
+      if (err != 0) {
+        ABSL_RAW_LOG(FATAL, "pthread_sigmask failed: %d", err);
+      }
+    }
+#endif
+    left_ = true;
+  }
+
+ private:
+  bool left_ = false;  // whether left region
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  bool mask_valid_ = false;
+  sigset_t mask_;  // old mask of blocked signals
+#endif
+  LowLevelAlloc::Arena *arena_;
+  ArenaLock(const ArenaLock &) = delete;
+  ArenaLock &operator=(const ArenaLock &) = delete;
+};
+}  // namespace
+
+// create an appropriate magic number for an object at "ptr"
+// "magic" should be kMagicAllocated or kMagicUnallocated
+inline static uintptr_t Magic(uintptr_t magic, AllocList::Header *ptr) {
+  return magic ^ reinterpret_cast<uintptr_t>(ptr);
+}
+
+namespace {
+size_t GetPageSize() {
+#ifdef _WIN32
+  SYSTEM_INFO system_info;
+  GetSystemInfo(&system_info);
+  return std::max(system_info.dwPageSize, system_info.dwAllocationGranularity);
+#elif defined(__wasm__) || defined(__asmjs__)
+  return getpagesize();
+#else
+  return sysconf(_SC_PAGESIZE);
+#endif
+}
+
+size_t RoundedUpBlockSize() {
+  // Round up block sizes to a power of two close to the header size.
+  size_t round_up = 16;
+  while (round_up < sizeof(AllocList::Header)) {
+    round_up += round_up;
+  }
+  return round_up;
+}
+
+}  // namespace
+
+LowLevelAlloc::Arena::Arena(uint32_t flags_value)
+    : mu(base_internal::SCHEDULE_KERNEL_ONLY),
+      allocation_count(0),
+      flags(flags_value),
+      pagesize(GetPageSize()),
+      round_up(RoundedUpBlockSize()),
+      min_size(2 * round_up),
+      random(0) {
+  freelist.header.size = 0;
+  freelist.header.magic =
+      Magic(kMagicUnallocated, &freelist.header);
+  freelist.header.arena = this;
+  freelist.levels = 0;
+  memset(freelist.next, 0, sizeof(freelist.next));
+}
+
+// L < meta_data_arena->mu
+LowLevelAlloc::Arena *LowLevelAlloc::NewArena(int32_t flags) {
+  Arena *meta_data_arena = DefaultArena();
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+  if ((flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+    meta_data_arena = UnhookedAsyncSigSafeArena();
+  } else  // NOLINT(readability/braces)
+#endif
+      if ((flags & LowLevelAlloc::kCallMallocHook) == 0) {
+    meta_data_arena = UnhookedArena();
+  }
+  Arena *result =
+    new (AllocWithArena(sizeof (*result), meta_data_arena)) Arena(flags);
+  return result;
+}
+
+// L < arena->mu, L < arena->arena->mu
+bool LowLevelAlloc::DeleteArena(Arena *arena) {
+  ABSL_RAW_CHECK(
+      arena != nullptr && arena != DefaultArena() && arena != UnhookedArena(),
+      "may not delete default arena");
+  ArenaLock section(arena);
+  if (arena->allocation_count != 0) {
+    section.Leave();
+    return false;
+  }
+  while (arena->freelist.next[0] != nullptr) {
+    AllocList *region = arena->freelist.next[0];
+    size_t size = region->header.size;
+    arena->freelist.next[0] = region->next[0];
+    ABSL_RAW_CHECK(
+        region->header.magic == Magic(kMagicUnallocated, &region->header),
+        "bad magic number in DeleteArena()");
+    ABSL_RAW_CHECK(region->header.arena == arena,
+                   "bad arena pointer in DeleteArena()");
+    ABSL_RAW_CHECK(size % arena->pagesize == 0,
+                   "empty arena has non-page-aligned block size");
+    ABSL_RAW_CHECK(reinterpret_cast<uintptr_t>(region) % arena->pagesize == 0,
+                   "empty arena has non-page-aligned block");
+    int munmap_result;
+#ifdef _WIN32
+    munmap_result = VirtualFree(region, 0, MEM_RELEASE);
+    ABSL_RAW_CHECK(munmap_result != 0,
+                   "LowLevelAlloc::DeleteArena: VitualFree failed");
+#else
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) == 0) {
+      munmap_result = munmap(region, size);
+    } else {
+      munmap_result = base_internal::DirectMunmap(region, size);
+    }
+#else
+    munmap_result = munmap(region, size);
+#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    if (munmap_result != 0) {
+      ABSL_RAW_LOG(FATAL, "LowLevelAlloc::DeleteArena: munmap failed: %d",
+                   errno);
+    }
+#endif  // _WIN32
+  }
+  section.Leave();
+  arena->~Arena();
+  Free(arena);
+  return true;
+}
+
+// ---------------------------------------------------------------------------
+
+// Addition, checking for overflow.  The intent is to die if an external client
+// manages to push through a request that would cause arithmetic to fail.
+static inline uintptr_t CheckedAdd(uintptr_t a, uintptr_t b) {
+  uintptr_t sum = a + b;
+  ABSL_RAW_CHECK(sum >= a, "LowLevelAlloc arithmetic overflow");
+  return sum;
+}
+
+// Return value rounded up to next multiple of align.
+// align must be a power of two.
+static inline uintptr_t RoundUp(uintptr_t addr, uintptr_t align) {
+  return CheckedAdd(addr, align - 1) & ~(align - 1);
+}
+
+// Equivalent to "return prev->next[i]" but with sanity checking
+// that the freelist is in the correct order, that it
+// consists of regions marked "unallocated", and that no two regions
+// are adjacent in memory (they should have been coalesced).
+// L >= arena->mu
+static AllocList *Next(int i, AllocList *prev, LowLevelAlloc::Arena *arena) {
+  ABSL_RAW_CHECK(i < prev->levels, "too few levels in Next()");
+  AllocList *next = prev->next[i];
+  if (next != nullptr) {
+    ABSL_RAW_CHECK(
+        next->header.magic == Magic(kMagicUnallocated, &next->header),
+        "bad magic number in Next()");
+    ABSL_RAW_CHECK(next->header.arena == arena, "bad arena pointer in Next()");
+    if (prev != &arena->freelist) {
+      ABSL_RAW_CHECK(prev < next, "unordered freelist");
+      ABSL_RAW_CHECK(reinterpret_cast<char *>(prev) + prev->header.size <
+                         reinterpret_cast<char *>(next),
+                     "malformed freelist");
+    }
+  }
+  return next;
+}
+
+// Coalesce list item "a" with its successor if they are adjacent.
+static void Coalesce(AllocList *a) {
+  AllocList *n = a->next[0];
+  if (n != nullptr && reinterpret_cast<char *>(a) + a->header.size ==
+                          reinterpret_cast<char *>(n)) {
+    LowLevelAlloc::Arena *arena = a->header.arena;
+    a->header.size += n->header.size;
+    n->header.magic = 0;
+    n->header.arena = nullptr;
+    AllocList *prev[kMaxLevel];
+    LLA_SkiplistDelete(&arena->freelist, n, prev);
+    LLA_SkiplistDelete(&arena->freelist, a, prev);
+    a->levels = LLA_SkiplistLevels(a->header.size, arena->min_size,
+                                   &arena->random);
+    LLA_SkiplistInsert(&arena->freelist, a, prev);
+  }
+}
+
+// Adds block at location "v" to the free list
+// L >= arena->mu
+static void AddToFreelist(void *v, LowLevelAlloc::Arena *arena) {
+  AllocList *f = reinterpret_cast<AllocList *>(
+                        reinterpret_cast<char *>(v) - sizeof (f->header));
+  ABSL_RAW_CHECK(f->header.magic == Magic(kMagicAllocated, &f->header),
+                 "bad magic number in AddToFreelist()");
+  ABSL_RAW_CHECK(f->header.arena == arena,
+                 "bad arena pointer in AddToFreelist()");
+  f->levels = LLA_SkiplistLevels(f->header.size, arena->min_size,
+                                 &arena->random);
+  AllocList *prev[kMaxLevel];
+  LLA_SkiplistInsert(&arena->freelist, f, prev);
+  f->header.magic = Magic(kMagicUnallocated, &f->header);
+  Coalesce(f);                  // maybe coalesce with successor
+  Coalesce(prev[0]);            // maybe coalesce with predecessor
+}
+
+// Frees storage allocated by LowLevelAlloc::Alloc().
+// L < arena->mu
+void LowLevelAlloc::Free(void *v) {
+  if (v != nullptr) {
+    AllocList *f = reinterpret_cast<AllocList *>(
+                        reinterpret_cast<char *>(v) - sizeof (f->header));
+    LowLevelAlloc::Arena *arena = f->header.arena;
+    ArenaLock section(arena);
+    AddToFreelist(v, arena);
+    ABSL_RAW_CHECK(arena->allocation_count > 0, "nothing in arena to free");
+    arena->allocation_count--;
+    section.Leave();
+  }
+}
+
+// allocates and returns a block of size bytes, to be freed with Free()
+// L < arena->mu
+static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) {
+  void *result = nullptr;
+  if (request != 0) {
+    AllocList *s;       // will point to region that satisfies request
+    ArenaLock section(arena);
+    // round up with header
+    size_t req_rnd = RoundUp(CheckedAdd(request, sizeof (s->header)),
+                             arena->round_up);
+    for (;;) {      // loop until we find a suitable region
+      // find the minimum levels that a block of this size must have
+      int i = LLA_SkiplistLevels(req_rnd, arena->min_size, nullptr) - 1;
+      if (i < arena->freelist.levels) {   // potential blocks exist
+        AllocList *before = &arena->freelist;  // predecessor of s
+        while ((s = Next(i, before, arena)) != nullptr &&
+               s->header.size < req_rnd) {
+          before = s;
+        }
+        if (s != nullptr) {       // we found a region
+          break;
+        }
+      }
+      // we unlock before mmap() both because mmap() may call a callback hook,
+      // and because it may be slow.
+      arena->mu.Unlock();
+      // mmap generous 64K chunks to decrease
+      // the chances/impact of fragmentation:
+      size_t new_pages_size = RoundUp(req_rnd, arena->pagesize * 16);
+      void *new_pages;
+#ifdef _WIN32
+      new_pages = VirtualAlloc(0, new_pages_size,
+                               MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+      ABSL_RAW_CHECK(new_pages != nullptr, "VirtualAlloc failed");
+#else
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+      if ((arena->flags & LowLevelAlloc::kAsyncSignalSafe) != 0) {
+        new_pages = base_internal::DirectMmap(nullptr, new_pages_size,
+            PROT_WRITE|PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+      } else {
+        new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ,
+                         MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+      }
+#else
+      new_pages = mmap(nullptr, new_pages_size, PROT_WRITE | PROT_READ,
+                       MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+#endif  // ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+      if (new_pages == MAP_FAILED) {
+        ABSL_RAW_LOG(FATAL, "mmap error: %d", errno);
+      }
+
+#endif  // _WIN32
+      arena->mu.Lock();
+      s = reinterpret_cast<AllocList *>(new_pages);
+      s->header.size = new_pages_size;
+      // Pretend the block is allocated; call AddToFreelist() to free it.
+      s->header.magic = Magic(kMagicAllocated, &s->header);
+      s->header.arena = arena;
+      AddToFreelist(&s->levels, arena);  // insert new region into free list
+    }
+    AllocList *prev[kMaxLevel];
+    LLA_SkiplistDelete(&arena->freelist, s, prev);    // remove from free list
+    // s points to the first free region that's big enough
+    if (CheckedAdd(req_rnd, arena->min_size) <= s->header.size) {
+      // big enough to split
+      AllocList *n = reinterpret_cast<AllocList *>
+                        (req_rnd + reinterpret_cast<char *>(s));
+      n->header.size = s->header.size - req_rnd;
+      n->header.magic = Magic(kMagicAllocated, &n->header);
+      n->header.arena = arena;
+      s->header.size = req_rnd;
+      AddToFreelist(&n->levels, arena);
+    }
+    s->header.magic = Magic(kMagicAllocated, &s->header);
+    ABSL_RAW_CHECK(s->header.arena == arena, "");
+    arena->allocation_count++;
+    section.Leave();
+    result = &s->levels;
+  }
   ABSL_ANNOTATE_MEMORY_IS_UNINITIALIZED(result, request);
-  return result; 
-} 
- 
-void *LowLevelAlloc::Alloc(size_t request) { 
-  void *result = DoAllocWithArena(request, DefaultArena()); 
-  return result; 
-} 
- 
-void *LowLevelAlloc::AllocWithArena(size_t request, Arena *arena) { 
-  ABSL_RAW_CHECK(arena != nullptr, "must pass a valid arena"); 
-  void *result = DoAllocWithArena(request, arena); 
-  return result; 
-} 
- 
-}  // namespace base_internal 
+  return result;
+}
+
+void *LowLevelAlloc::Alloc(size_t request) {
+  void *result = DoAllocWithArena(request, DefaultArena());
+  return result;
+}
+
+void *LowLevelAlloc::AllocWithArena(size_t request, Arena *arena) {
+  ABSL_RAW_CHECK(arena != nullptr, "must pass a valid arena");
+  void *result = DoAllocWithArena(request, arena);
+  return result;
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING 
+
+#endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.h
index 8b0fd94850..fa109d53ec 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.h
@@ -1,126 +1,126 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_ 
-#define ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_ 
- 
-// A simple thread-safe memory allocator that does not depend on 
-// mutexes or thread-specific data.  It is intended to be used 
-// sparingly, and only when malloc() would introduce an unwanted 
-// dependency, such as inside the heap-checker, or the Mutex 
-// implementation. 
- 
-// IWYU pragma: private, include "base/low_level_alloc.h" 
- 
-#include <sys/types.h> 
- 
-#include <cstdint> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
+#define ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
+
+// A simple thread-safe memory allocator that does not depend on
+// mutexes or thread-specific data.  It is intended to be used
+// sparingly, and only when malloc() would introduce an unwanted
+// dependency, such as inside the heap-checker, or the Mutex
+// implementation.
+
+// IWYU pragma: private, include "base/low_level_alloc.h"
+
+#include <sys/types.h>
+
+#include <cstdint>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/config.h"
- 
-// LowLevelAlloc requires that the platform support low-level 
-// allocation of virtual memory. Platforms lacking this cannot use 
-// LowLevelAlloc. 
-#ifdef ABSL_LOW_LEVEL_ALLOC_MISSING 
-#error ABSL_LOW_LEVEL_ALLOC_MISSING cannot be directly set 
-#elif !defined(ABSL_HAVE_MMAP) && !defined(_WIN32) 
-#define ABSL_LOW_LEVEL_ALLOC_MISSING 1 
-#endif 
- 
-// Using LowLevelAlloc with kAsyncSignalSafe isn't supported on Windows or 
-// asm.js / WebAssembly. 
-// See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html 
-// for more information. 
-#ifdef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-#error ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING cannot be directly set 
-#elif defined(_WIN32) || defined(__asmjs__) || defined(__wasm__) 
-#define ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 1 
-#endif 
- 
-#include <cstddef> 
- 
+
+// LowLevelAlloc requires that the platform support low-level
+// allocation of virtual memory. Platforms lacking this cannot use
+// LowLevelAlloc.
+#ifdef ABSL_LOW_LEVEL_ALLOC_MISSING
+#error ABSL_LOW_LEVEL_ALLOC_MISSING cannot be directly set
+#elif !defined(ABSL_HAVE_MMAP) && !defined(_WIN32)
+#define ABSL_LOW_LEVEL_ALLOC_MISSING 1
+#endif
+
+// Using LowLevelAlloc with kAsyncSignalSafe isn't supported on Windows or
+// asm.js / WebAssembly.
+// See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html
+// for more information.
+#ifdef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+#error ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING cannot be directly set
+#elif defined(_WIN32) || defined(__asmjs__) || defined(__wasm__)
+#define ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 1
+#endif
+
+#include <cstddef>
+
 #include "y_absl/base/port.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-class LowLevelAlloc { 
- public: 
-  struct Arena;       // an arena from which memory may be allocated 
- 
-  // Returns a pointer to a block of at least "request" bytes 
-  // that have been newly allocated from the specific arena. 
-  // for Alloc() call the DefaultArena() is used. 
-  // Returns 0 if passed request==0. 
-  // Does not return 0 under other circumstances; it crashes if memory 
-  // is not available. 
-  static void *Alloc(size_t request) ABSL_ATTRIBUTE_SECTION(malloc_hook); 
-  static void *AllocWithArena(size_t request, Arena *arena) 
-      ABSL_ATTRIBUTE_SECTION(malloc_hook); 
- 
-  // Deallocates a region of memory that was previously allocated with 
-  // Alloc().   Does nothing if passed 0.   "s" must be either 0, 
-  // or must have been returned from a call to Alloc() and not yet passed to 
-  // Free() since that call to Alloc().  The space is returned to the arena 
-  // from which it was allocated. 
-  static void Free(void *s) ABSL_ATTRIBUTE_SECTION(malloc_hook); 
- 
-  // ABSL_ATTRIBUTE_SECTION(malloc_hook) for Alloc* and Free 
-  // are to put all callers of MallocHook::Invoke* in this module 
-  // into special section, 
-  // so that MallocHook::GetCallerStackTrace can function accurately. 
- 
-  // Create a new arena. 
-  // The root metadata for the new arena is allocated in the 
-  // meta_data_arena; the DefaultArena() can be passed for meta_data_arena. 
-  // These values may be ored into flags: 
-  enum { 
-    // Report calls to Alloc() and Free() via the MallocHook interface. 
-    // Set in the DefaultArena. 
-    kCallMallocHook = 0x0001, 
- 
-#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING 
-    // Make calls to Alloc(), Free() be async-signal-safe. Not set in 
-    // DefaultArena(). Not supported on all platforms. 
-    kAsyncSignalSafe = 0x0002, 
-#endif 
-  }; 
-  // Construct a new arena.  The allocation of the underlying metadata honors 
-  // the provided flags.  For example, the call NewArena(kAsyncSignalSafe) 
-  // is itself async-signal-safe, as well as generatating an arena that provides 
-  // async-signal-safe Alloc/Free. 
-  static Arena *NewArena(int32_t flags); 
- 
-  // Destroys an arena allocated by NewArena and returns true, 
-  // provided no allocated blocks remain in the arena. 
-  // If allocated blocks remain in the arena, does nothing and 
-  // returns false. 
-  // It is illegal to attempt to destroy the DefaultArena(). 
-  static bool DeleteArena(Arena *arena); 
- 
-  // The default arena that always exists. 
-  static Arena *DefaultArena(); 
- 
- private: 
-  LowLevelAlloc();      // no instances 
-}; 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+class LowLevelAlloc {
+ public:
+  struct Arena;       // an arena from which memory may be allocated
+
+  // Returns a pointer to a block of at least "request" bytes
+  // that have been newly allocated from the specific arena.
+  // for Alloc() call the DefaultArena() is used.
+  // Returns 0 if passed request==0.
+  // Does not return 0 under other circumstances; it crashes if memory
+  // is not available.
+  static void *Alloc(size_t request) ABSL_ATTRIBUTE_SECTION(malloc_hook);
+  static void *AllocWithArena(size_t request, Arena *arena)
+      ABSL_ATTRIBUTE_SECTION(malloc_hook);
+
+  // Deallocates a region of memory that was previously allocated with
+  // Alloc().   Does nothing if passed 0.   "s" must be either 0,
+  // or must have been returned from a call to Alloc() and not yet passed to
+  // Free() since that call to Alloc().  The space is returned to the arena
+  // from which it was allocated.
+  static void Free(void *s) ABSL_ATTRIBUTE_SECTION(malloc_hook);
+
+  // ABSL_ATTRIBUTE_SECTION(malloc_hook) for Alloc* and Free
+  // are to put all callers of MallocHook::Invoke* in this module
+  // into special section,
+  // so that MallocHook::GetCallerStackTrace can function accurately.
+
+  // Create a new arena.
+  // The root metadata for the new arena is allocated in the
+  // meta_data_arena; the DefaultArena() can be passed for meta_data_arena.
+  // These values may be ored into flags:
+  enum {
+    // Report calls to Alloc() and Free() via the MallocHook interface.
+    // Set in the DefaultArena.
+    kCallMallocHook = 0x0001,
+
+#ifndef ABSL_LOW_LEVEL_ALLOC_ASYNC_SIGNAL_SAFE_MISSING
+    // Make calls to Alloc(), Free() be async-signal-safe. Not set in
+    // DefaultArena(). Not supported on all platforms.
+    kAsyncSignalSafe = 0x0002,
+#endif
+  };
+  // Construct a new arena.  The allocation of the underlying metadata honors
+  // the provided flags.  For example, the call NewArena(kAsyncSignalSafe)
+  // is itself async-signal-safe, as well as generatating an arena that provides
+  // async-signal-safe Alloc/Free.
+  static Arena *NewArena(int32_t flags);
+
+  // Destroys an arena allocated by NewArena and returns true,
+  // provided no allocated blocks remain in the arena.
+  // If allocated blocks remain in the arena, does nothing and
+  // returns false.
+  // It is illegal to attempt to destroy the DefaultArena().
+  static bool DeleteArena(Arena *arena);
+
+  // The default arena that always exists.
+  static Arena *DefaultArena();
+
+ private:
+  LowLevelAlloc();      // no instances
+};
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/ya.make b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/ya.make
index e93c7b2723..fabba74677 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/ya.make
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/ya.make
@@ -1,33 +1,33 @@
-# Generated by devtools/yamaker. 
- 
-LIBRARY() 
- 
+# Generated by devtools/yamaker.
+
+LIBRARY()
+
 WITHOUT_LICENSE_TEXTS()
- 
+
 OWNER(
     somov
     g:cpp-contrib
 )
 
-LICENSE(Apache-2.0) 
- 
-PEERDIR( 
+LICENSE(Apache-2.0)
+
+PEERDIR(
     contrib/restricted/abseil-cpp-tstring/y_absl/base
     contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging
     contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait
     contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity
-) 
- 
+)
+
 ADDINCL(
     GLOBAL contrib/restricted/abseil-cpp-tstring
 )
- 
-NO_COMPILER_WARNINGS() 
- 
+
+NO_COMPILER_WARNINGS()
+
 SRCDIR(contrib/restricted/abseil-cpp-tstring/y_absl/base/internal)
- 
-SRCS( 
-    low_level_alloc.cc 
-) 
- 
-END() 
+
+SRCS(
+    low_level_alloc.cc
+)
+
+END()
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_scheduling.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_scheduling.h
index 580cb2532e..61eb4ac643 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_scheduling.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_scheduling.h
@@ -1,33 +1,33 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// Core interfaces and definitions used by by low-level interfaces such as 
-// SpinLock. 
- 
-#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_ 
-#define ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Core interfaces and definitions used by by low-level interfaces such as
+// SpinLock.
+
+#ifndef ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
+#define ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
+
 #include "y_absl/base/internal/raw_logging.h"
 #include "y_absl/base/internal/scheduling_mode.h"
 #include "y_absl/base/macros.h"
- 
-// The following two declarations exist so SchedulingGuard may friend them with 
-// the appropriate language linkage.  These callbacks allow libc internals, such 
-// as function level statics, to schedule cooperatively when locking. 
-extern "C" bool __google_disable_rescheduling(void); 
-extern "C" void __google_enable_rescheduling(bool disable_result); 
- 
+
+// The following two declarations exist so SchedulingGuard may friend them with
+// the appropriate language linkage.  These callbacks allow libc internals, such
+// as function level statics, to schedule cooperatively when locking.
+extern "C" bool __google_disable_rescheduling(void);
+extern "C" void __google_enable_rescheduling(bool disable_result);
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
 class CondVar;
@@ -37,55 +37,55 @@ namespace synchronization_internal {
 int MutexDelay(int32_t c, int mode);
 }  // namespace synchronization_internal
 
-namespace base_internal { 
- 
-class SchedulingHelper;  // To allow use of SchedulingGuard. 
-class SpinLock;          // To allow use of SchedulingGuard. 
- 
-// SchedulingGuard 
-// Provides guard semantics that may be used to disable cooperative rescheduling 
-// of the calling thread within specific program blocks.  This is used to 
-// protect resources (e.g. low-level SpinLocks or Domain code) that cooperative 
-// scheduling depends on. 
-// 
-// Domain implementations capable of rescheduling in reaction to involuntary 
-// kernel thread actions (e.g blocking due to a pagefault or syscall) must 
-// guarantee that an annotated thread is not allowed to (cooperatively) 
-// reschedule until the annotated region is complete. 
-// 
-// It is an error to attempt to use a cooperatively scheduled resource (e.g. 
-// Mutex) within a rescheduling-disabled region. 
-// 
-// All methods are async-signal safe. 
-class SchedulingGuard { 
- public: 
-  // Returns true iff the calling thread may be cooperatively rescheduled. 
-  static bool ReschedulingIsAllowed(); 
+namespace base_internal {
+
+class SchedulingHelper;  // To allow use of SchedulingGuard.
+class SpinLock;          // To allow use of SchedulingGuard.
+
+// SchedulingGuard
+// Provides guard semantics that may be used to disable cooperative rescheduling
+// of the calling thread within specific program blocks.  This is used to
+// protect resources (e.g. low-level SpinLocks or Domain code) that cooperative
+// scheduling depends on.
+//
+// Domain implementations capable of rescheduling in reaction to involuntary
+// kernel thread actions (e.g blocking due to a pagefault or syscall) must
+// guarantee that an annotated thread is not allowed to (cooperatively)
+// reschedule until the annotated region is complete.
+//
+// It is an error to attempt to use a cooperatively scheduled resource (e.g.
+// Mutex) within a rescheduling-disabled region.
+//
+// All methods are async-signal safe.
+class SchedulingGuard {
+ public:
+  // Returns true iff the calling thread may be cooperatively rescheduled.
+  static bool ReschedulingIsAllowed();
   SchedulingGuard(const SchedulingGuard&) = delete;
   SchedulingGuard& operator=(const SchedulingGuard&) = delete;
- 
- private: 
-  // Disable cooperative rescheduling of the calling thread.  It may still 
-  // initiate scheduling operations (e.g. wake-ups), however, it may not itself 
-  // reschedule.  Nestable.  The returned result is opaque, clients should not 
-  // attempt to interpret it. 
-  // REQUIRES: Result must be passed to a pairing EnableScheduling(). 
-  static bool DisableRescheduling(); 
- 
-  // Marks the end of a rescheduling disabled region, previously started by 
-  // DisableRescheduling(). 
-  // REQUIRES: Pairs with innermost call (and result) of DisableRescheduling(). 
-  static void EnableRescheduling(bool disable_result); 
- 
-  // A scoped helper for {Disable, Enable}Rescheduling(). 
-  // REQUIRES: destructor must run in same thread as constructor. 
-  struct ScopedDisable { 
-    ScopedDisable() { disabled = SchedulingGuard::DisableRescheduling(); } 
-    ~ScopedDisable() { SchedulingGuard::EnableRescheduling(disabled); } 
- 
-    bool disabled; 
-  }; 
- 
+
+ private:
+  // Disable cooperative rescheduling of the calling thread.  It may still
+  // initiate scheduling operations (e.g. wake-ups), however, it may not itself
+  // reschedule.  Nestable.  The returned result is opaque, clients should not
+  // attempt to interpret it.
+  // REQUIRES: Result must be passed to a pairing EnableScheduling().
+  static bool DisableRescheduling();
+
+  // Marks the end of a rescheduling disabled region, previously started by
+  // DisableRescheduling().
+  // REQUIRES: Pairs with innermost call (and result) of DisableRescheduling().
+  static void EnableRescheduling(bool disable_result);
+
+  // A scoped helper for {Disable, Enable}Rescheduling().
+  // REQUIRES: destructor must run in same thread as constructor.
+  struct ScopedDisable {
+    ScopedDisable() { disabled = SchedulingGuard::DisableRescheduling(); }
+    ~ScopedDisable() { SchedulingGuard::EnableRescheduling(disabled); }
+
+    bool disabled;
+  };
+
   // A scoped helper to enable rescheduling temporarily.
   // REQUIRES: destructor must run in same thread as constructor.
   class ScopedEnable {
@@ -100,35 +100,35 @@ class SchedulingGuard {
   // Access to SchedulingGuard is explicitly permitted.
   friend class y_absl::CondVar;
   friend class y_absl::Mutex;
-  friend class SchedulingHelper; 
-  friend class SpinLock; 
+  friend class SchedulingHelper;
+  friend class SpinLock;
   friend int y_absl::synchronization_internal::MutexDelay(int32_t c, int mode);
-}; 
- 
-//------------------------------------------------------------------------------ 
-// End of public interfaces. 
-//------------------------------------------------------------------------------ 
- 
-inline bool SchedulingGuard::ReschedulingIsAllowed() { 
-  return false; 
-} 
- 
-inline bool SchedulingGuard::DisableRescheduling() { 
-  return false; 
-} 
- 
-inline void SchedulingGuard::EnableRescheduling(bool /* disable_result */) { 
-  return; 
-} 
- 
+};
+
+//------------------------------------------------------------------------------
+// End of public interfaces.
+//------------------------------------------------------------------------------
+
+inline bool SchedulingGuard::ReschedulingIsAllowed() {
+  return false;
+}
+
+inline bool SchedulingGuard::DisableRescheduling() {
+  return false;
+}
+
+inline void SchedulingGuard::EnableRescheduling(bool /* disable_result */) {
+  return;
+}
+
 inline SchedulingGuard::ScopedEnable::ScopedEnable()
     : scheduling_disabled_depth_(0) {}
 inline SchedulingGuard::ScopedEnable::~ScopedEnable() {
   ABSL_RAW_CHECK(scheduling_disabled_depth_ == 0, "disable unused warning");
 }
 
-}  // namespace base_internal 
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/per_thread_tls.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/per_thread_tls.h
index 2f9aec0a19..943f72a433 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/per_thread_tls.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/per_thread_tls.h
@@ -1,52 +1,52 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_ 
-#define ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_ 
- 
-// This header defines two macros: 
-// 
-// If the platform supports thread-local storage: 
-// 
-// * ABSL_PER_THREAD_TLS_KEYWORD is the C keyword needed to declare a 
-//   thread-local variable 
-// * ABSL_PER_THREAD_TLS is 1 
-// 
-// Otherwise: 
-// 
-// * ABSL_PER_THREAD_TLS_KEYWORD is empty 
-// * ABSL_PER_THREAD_TLS is 0 
-// 
-// Microsoft C supports thread-local storage. 
-// GCC supports it if the appropriate version of glibc is available, 
-// which the programmer can indicate by defining ABSL_HAVE_TLS 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
+#define ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
+
+// This header defines two macros:
+//
+// If the platform supports thread-local storage:
+//
+// * ABSL_PER_THREAD_TLS_KEYWORD is the C keyword needed to declare a
+//   thread-local variable
+// * ABSL_PER_THREAD_TLS is 1
+//
+// Otherwise:
+//
+// * ABSL_PER_THREAD_TLS_KEYWORD is empty
+// * ABSL_PER_THREAD_TLS is 0
+//
+// Microsoft C supports thread-local storage.
+// GCC supports it if the appropriate version of glibc is available,
+// which the programmer can indicate by defining ABSL_HAVE_TLS
+
 #include "y_absl/base/port.h"  // For ABSL_HAVE_TLS
- 
-#if defined(ABSL_PER_THREAD_TLS) 
-#error ABSL_PER_THREAD_TLS cannot be directly set 
-#elif defined(ABSL_PER_THREAD_TLS_KEYWORD) 
-#error ABSL_PER_THREAD_TLS_KEYWORD cannot be directly set 
-#elif defined(ABSL_HAVE_TLS) 
-#define ABSL_PER_THREAD_TLS_KEYWORD __thread 
-#define ABSL_PER_THREAD_TLS 1 
-#elif defined(_MSC_VER) 
-#define ABSL_PER_THREAD_TLS_KEYWORD __declspec(thread) 
-#define ABSL_PER_THREAD_TLS 1 
-#else 
-#define ABSL_PER_THREAD_TLS_KEYWORD 
-#define ABSL_PER_THREAD_TLS 0 
-#endif 
- 
-#endif  // ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_ 
+
+#if defined(ABSL_PER_THREAD_TLS)
+#error ABSL_PER_THREAD_TLS cannot be directly set
+#elif defined(ABSL_PER_THREAD_TLS_KEYWORD)
+#error ABSL_PER_THREAD_TLS_KEYWORD cannot be directly set
+#elif defined(ABSL_HAVE_TLS)
+#define ABSL_PER_THREAD_TLS_KEYWORD __thread
+#define ABSL_PER_THREAD_TLS 1
+#elif defined(_MSC_VER)
+#define ABSL_PER_THREAD_TLS_KEYWORD __declspec(thread)
+#define ABSL_PER_THREAD_TLS 1
+#else
+#define ABSL_PER_THREAD_TLS_KEYWORD
+#define ABSL_PER_THREAD_TLS 0
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_PER_THREAD_TLS_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/pretty_function.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/pretty_function.h
index bcf6bf56de..35d51676dc 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/pretty_function.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/pretty_function.h
@@ -1,33 +1,33 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_ 
-#define ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_ 
- 
-// ABSL_PRETTY_FUNCTION 
-// 
-// In C++11, __func__ gives the undecorated name of the current function.  That 
-// is, "main", not "int main()".  Various compilers give extra macros to get the 
-// decorated function name, including return type and arguments, to 
-// differentiate between overload sets.  ABSL_PRETTY_FUNCTION is a portable 
-// version of these macros which forwards to the correct macro on each compiler. 
-#if defined(_MSC_VER) 
-#define ABSL_PRETTY_FUNCTION __FUNCSIG__ 
-#elif defined(__GNUC__) 
-#define ABSL_PRETTY_FUNCTION __PRETTY_FUNCTION__ 
-#else 
-#error "Unsupported compiler" 
-#endif 
- 
-#endif  // ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_ 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
+#define ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
+
+// ABSL_PRETTY_FUNCTION
+//
+// In C++11, __func__ gives the undecorated name of the current function.  That
+// is, "main", not "int main()".  Various compilers give extra macros to get the
+// decorated function name, including return type and arguments, to
+// differentiate between overload sets.  ABSL_PRETTY_FUNCTION is a portable
+// version of these macros which forwards to the correct macro on each compiler.
+#if defined(_MSC_VER)
+#define ABSL_PRETTY_FUNCTION __FUNCSIG__
+#elif defined(__GNUC__)
+#define ABSL_PRETTY_FUNCTION __PRETTY_FUNCTION__
+#else
+#error "Unsupported compiler"
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_PRETTY_FUNCTION_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc
index 25121044a3..ea9a48c2c0 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc
@@ -1,188 +1,188 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/raw_logging.h"
- 
-#include <stddef.h> 
-#include <cstdarg> 
-#include <cstdio> 
-#include <cstdlib> 
-#include <cstring> 
- 
+
+#include <stddef.h>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/atomic_hook.h"
 #include "y_absl/base/log_severity.h"
- 
-// We know how to perform low-level writes to stderr in POSIX and Windows.  For 
-// these platforms, we define the token ABSL_LOW_LEVEL_WRITE_SUPPORTED. 
-// Much of raw_logging.cc becomes a no-op when we can't output messages, 
-// although a FATAL ABSL_RAW_LOG message will still abort the process. 
- 
-// ABSL_HAVE_POSIX_WRITE is defined when the platform provides posix write() 
-// (as from unistd.h) 
-// 
-// This preprocessor token is also defined in raw_io.cc.  If you need to copy 
-// this, consider moving both to config.h instead. 
-#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \ 
-    defined(__Fuchsia__) || defined(__native_client__) || \ 
+
+// We know how to perform low-level writes to stderr in POSIX and Windows.  For
+// these platforms, we define the token ABSL_LOW_LEVEL_WRITE_SUPPORTED.
+// Much of raw_logging.cc becomes a no-op when we can't output messages,
+// although a FATAL ABSL_RAW_LOG message will still abort the process.
+
+// ABSL_HAVE_POSIX_WRITE is defined when the platform provides posix write()
+// (as from unistd.h)
+//
+// This preprocessor token is also defined in raw_io.cc.  If you need to copy
+// this, consider moving both to config.h instead.
+#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || \
+    defined(__Fuchsia__) || defined(__native_client__) || \
     defined(__EMSCRIPTEN__) || defined(__ASYLO__)
 
-#include <unistd.h> 
- 
-#define ABSL_HAVE_POSIX_WRITE 1 
-#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 
-#else 
-#undef ABSL_HAVE_POSIX_WRITE 
-#endif 
- 
-// ABSL_HAVE_SYSCALL_WRITE is defined when the platform provides the syscall 
-//   syscall(SYS_write, /*int*/ fd, /*char* */ buf, /*size_t*/ len); 
-// for low level operations that want to avoid libc. 
-#if (defined(__linux__) || defined(__FreeBSD__)) && !defined(__ANDROID__) 
-#include <sys/syscall.h> 
-#define ABSL_HAVE_SYSCALL_WRITE 1 
-#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 
-#else 
-#undef ABSL_HAVE_SYSCALL_WRITE 
-#endif 
- 
-#ifdef _WIN32 
-#include <io.h> 
- 
-#define ABSL_HAVE_RAW_IO 1 
-#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1 
-#else 
-#undef ABSL_HAVE_RAW_IO 
-#endif 
- 
+#include <unistd.h>
+
+#define ABSL_HAVE_POSIX_WRITE 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_POSIX_WRITE
+#endif
+
+// ABSL_HAVE_SYSCALL_WRITE is defined when the platform provides the syscall
+//   syscall(SYS_write, /*int*/ fd, /*char* */ buf, /*size_t*/ len);
+// for low level operations that want to avoid libc.
+#if (defined(__linux__) || defined(__FreeBSD__)) && !defined(__ANDROID__)
+#include <sys/syscall.h>
+#define ABSL_HAVE_SYSCALL_WRITE 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_SYSCALL_WRITE
+#endif
+
+#ifdef _WIN32
+#include <io.h>
+
+#define ABSL_HAVE_RAW_IO 1
+#define ABSL_LOW_LEVEL_WRITE_SUPPORTED 1
+#else
+#undef ABSL_HAVE_RAW_IO
+#endif
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
 namespace raw_logging_internal {
 namespace {
 
-// TODO(gfalcon): We want raw-logging to work on as many platforms as possible. 
+// TODO(gfalcon): We want raw-logging to work on as many platforms as possible.
 // Explicitly `#error` out when not `ABSL_LOW_LEVEL_WRITE_SUPPORTED`, except for
 // a selected set of platforms for which we expect not to be able to raw log.
- 
+
 ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
     y_absl::base_internal::AtomicHook<LogPrefixHook>
         log_prefix_hook;
 ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES
     y_absl::base_internal::AtomicHook<AbortHook>
         abort_hook;
- 
-#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED 
+
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
 constexpr char kTruncated[] = " ... (message truncated)\n";
- 
-// sprintf the format to the buffer, adjusting *buf and *size to reflect the 
-// consumed bytes, and return whether the message fit without truncation.  If 
-// truncation occurred, if possible leave room in the buffer for the message 
-// kTruncated[]. 
+
+// sprintf the format to the buffer, adjusting *buf and *size to reflect the
+// consumed bytes, and return whether the message fit without truncation.  If
+// truncation occurred, if possible leave room in the buffer for the message
+// kTruncated[].
 bool VADoRawLog(char** buf, int* size, const char* format, va_list ap)
     ABSL_PRINTF_ATTRIBUTE(3, 0);
 bool VADoRawLog(char** buf, int* size, const char* format, va_list ap) {
-  int n = vsnprintf(*buf, *size, format, ap); 
-  bool result = true; 
-  if (n < 0 || n > *size) { 
-    result = false; 
-    if (static_cast<size_t>(*size) > sizeof(kTruncated)) { 
-      n = *size - sizeof(kTruncated);  // room for truncation message 
-    } else { 
+  int n = vsnprintf(*buf, *size, format, ap);
+  bool result = true;
+  if (n < 0 || n > *size) {
+    result = false;
+    if (static_cast<size_t>(*size) > sizeof(kTruncated)) {
+      n = *size - sizeof(kTruncated);  // room for truncation message
+    } else {
       n = 0;  // no room for truncation message
-    } 
-  } 
-  *size -= n; 
-  *buf += n; 
-  return result; 
-} 
-#endif  // ABSL_LOW_LEVEL_WRITE_SUPPORTED 
- 
+    }
+  }
+  *size -= n;
+  *buf += n;
+  return result;
+}
+#endif  // ABSL_LOW_LEVEL_WRITE_SUPPORTED
+
 constexpr int kLogBufSize = 3000;
- 
-// CAVEAT: vsnprintf called from *DoRawLog below has some (exotic) code paths 
-// that invoke malloc() and getenv() that might acquire some locks. 
- 
-// Helper for RawLog below. 
-// *DoRawLog writes to *buf of *size and move them past the written portion. 
-// It returns true iff there was no overflow or error. 
-bool DoRawLog(char** buf, int* size, const char* format, ...) 
-    ABSL_PRINTF_ATTRIBUTE(3, 4); 
-bool DoRawLog(char** buf, int* size, const char* format, ...) { 
-  va_list ap; 
-  va_start(ap, format); 
-  int n = vsnprintf(*buf, *size, format, ap); 
-  va_end(ap); 
-  if (n < 0 || n > *size) return false; 
-  *size -= n; 
-  *buf += n; 
-  return true; 
-} 
- 
+
+// CAVEAT: vsnprintf called from *DoRawLog below has some (exotic) code paths
+// that invoke malloc() and getenv() that might acquire some locks.
+
+// Helper for RawLog below.
+// *DoRawLog writes to *buf of *size and move them past the written portion.
+// It returns true iff there was no overflow or error.
+bool DoRawLog(char** buf, int* size, const char* format, ...)
+    ABSL_PRINTF_ATTRIBUTE(3, 4);
+bool DoRawLog(char** buf, int* size, const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  int n = vsnprintf(*buf, *size, format, ap);
+  va_end(ap);
+  if (n < 0 || n > *size) return false;
+  *size -= n;
+  *buf += n;
+  return true;
+}
+
 void RawLogVA(y_absl::LogSeverity severity, const char* file, int line,
-              const char* format, va_list ap) ABSL_PRINTF_ATTRIBUTE(4, 0); 
+              const char* format, va_list ap) ABSL_PRINTF_ATTRIBUTE(4, 0);
 void RawLogVA(y_absl::LogSeverity severity, const char* file, int line,
-              const char* format, va_list ap) { 
-  char buffer[kLogBufSize]; 
-  char* buf = buffer; 
-  int size = sizeof(buffer); 
-#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED 
-  bool enabled = true; 
-#else 
-  bool enabled = false; 
-#endif 
- 
-#ifdef ABSL_MIN_LOG_LEVEL 
+              const char* format, va_list ap) {
+  char buffer[kLogBufSize];
+  char* buf = buffer;
+  int size = sizeof(buffer);
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  bool enabled = true;
+#else
+  bool enabled = false;
+#endif
+
+#ifdef ABSL_MIN_LOG_LEVEL
   if (severity < static_cast<y_absl::LogSeverity>(ABSL_MIN_LOG_LEVEL) &&
       severity < y_absl::LogSeverity::kFatal) {
-    enabled = false; 
-  } 
-#endif 
- 
-  auto log_prefix_hook_ptr = log_prefix_hook.Load(); 
-  if (log_prefix_hook_ptr) { 
-    enabled = log_prefix_hook_ptr(severity, file, line, &buf, &size); 
-  } else { 
-    if (enabled) { 
-      DoRawLog(&buf, &size, "[%s : %d] RAW: ", file, line); 
-    } 
-  } 
-  const char* const prefix_end = buf; 
- 
-#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED 
-  if (enabled) { 
-    bool no_chop = VADoRawLog(&buf, &size, format, ap); 
-    if (no_chop) { 
-      DoRawLog(&buf, &size, "\n"); 
-    } else { 
-      DoRawLog(&buf, &size, "%s", kTruncated); 
-    } 
+    enabled = false;
+  }
+#endif
+
+  auto log_prefix_hook_ptr = log_prefix_hook.Load();
+  if (log_prefix_hook_ptr) {
+    enabled = log_prefix_hook_ptr(severity, file, line, &buf, &size);
+  } else {
+    if (enabled) {
+      DoRawLog(&buf, &size, "[%s : %d] RAW: ", file, line);
+    }
+  }
+  const char* const prefix_end = buf;
+
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  if (enabled) {
+    bool no_chop = VADoRawLog(&buf, &size, format, ap);
+    if (no_chop) {
+      DoRawLog(&buf, &size, "\n");
+    } else {
+      DoRawLog(&buf, &size, "%s", kTruncated);
+    }
     SafeWriteToStderr(buffer, strlen(buffer));
-  } 
-#else 
-  static_cast<void>(format); 
-  static_cast<void>(ap); 
-#endif 
- 
-  // Abort the process after logging a FATAL message, even if the output itself 
-  // was suppressed. 
+  }
+#else
+  static_cast<void>(format);
+  static_cast<void>(ap);
+#endif
+
+  // Abort the process after logging a FATAL message, even if the output itself
+  // was suppressed.
   if (severity == y_absl::LogSeverity::kFatal) {
-    abort_hook(file, line, buffer, prefix_end, buffer + kLogBufSize); 
-    abort(); 
-  } 
-} 
- 
+    abort_hook(file, line, buffer, prefix_end, buffer + kLogBufSize);
+    abort();
+  }
+}
+
 // Non-formatting version of RawLog().
 //
 // TODO(gfalcon): When string_view no longer depends on base, change this
@@ -193,50 +193,50 @@ void DefaultInternalLog(y_absl::LogSeverity severity, const char* file, int line
          message.data());
 }
 
-}  // namespace 
- 
-void SafeWriteToStderr(const char *s, size_t len) { 
-#if defined(ABSL_HAVE_SYSCALL_WRITE) 
-  syscall(SYS_write, STDERR_FILENO, s, len); 
-#elif defined(ABSL_HAVE_POSIX_WRITE) 
-  write(STDERR_FILENO, s, len); 
-#elif defined(ABSL_HAVE_RAW_IO) 
-  _write(/* stderr */ 2, s, len); 
-#else 
-  // stderr logging unsupported on this platform 
-  (void) s; 
-  (void) len; 
-#endif 
-} 
- 
+}  // namespace
+
+void SafeWriteToStderr(const char *s, size_t len) {
+#if defined(ABSL_HAVE_SYSCALL_WRITE)
+  syscall(SYS_write, STDERR_FILENO, s, len);
+#elif defined(ABSL_HAVE_POSIX_WRITE)
+  write(STDERR_FILENO, s, len);
+#elif defined(ABSL_HAVE_RAW_IO)
+  _write(/* stderr */ 2, s, len);
+#else
+  // stderr logging unsupported on this platform
+  (void) s;
+  (void) len;
+#endif
+}
+
 void RawLog(y_absl::LogSeverity severity, const char* file, int line,
-            const char* format, ...) { 
-  va_list ap; 
-  va_start(ap, format); 
-  RawLogVA(severity, file, line, format, ap); 
-  va_end(ap); 
-} 
- 
-bool RawLoggingFullySupported() { 
-#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED 
-  return true; 
-#else  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED 
-  return false; 
-#endif  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED 
-} 
- 
+            const char* format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  RawLogVA(severity, file, line, format, ap);
+  va_end(ap);
+}
+
+bool RawLoggingFullySupported() {
+#ifdef ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  return true;
+#else  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED
+  return false;
+#endif  // !ABSL_LOW_LEVEL_WRITE_SUPPORTED
+}
+
 ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES ABSL_DLL
     y_absl::base_internal::AtomicHook<InternalLogFunction>
         internal_log_function(DefaultInternalLog);
- 
+
 void RegisterLogPrefixHook(LogPrefixHook func) { log_prefix_hook.Store(func); }
 
 void RegisterAbortHook(AbortHook func) { abort_hook.Store(func); }
 
-void RegisterInternalLogFunction(InternalLogFunction func) { 
-  internal_log_function.Store(func); 
-} 
- 
-}  // namespace raw_logging_internal 
+void RegisterInternalLogFunction(InternalLogFunction func) {
+  internal_log_function.Store(func);
+}
+
+}  // namespace raw_logging_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.h
index eae6e5ad8d..4d5c77003f 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.h
@@ -1,26 +1,26 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// Thread-safe logging routines that do not allocate any memory or 
-// acquire any locks, and can therefore be used by low-level memory 
-// allocation, synchronization, and signal-handling code. 
- 
-#ifndef ABSL_BASE_INTERNAL_RAW_LOGGING_H_ 
-#define ABSL_BASE_INTERNAL_RAW_LOGGING_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Thread-safe logging routines that do not allocate any memory or
+// acquire any locks, and can therefore be used by low-level memory
+// allocation, synchronization, and signal-handling code.
+
+#ifndef ABSL_BASE_INTERNAL_RAW_LOGGING_H_
+#define ABSL_BASE_INTERNAL_RAW_LOGGING_H_
+
 #include <util/generic/string.h>
- 
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/atomic_hook.h"
@@ -28,50 +28,50 @@
 #include "y_absl/base/macros.h"
 #include "y_absl/base/optimization.h"
 #include "y_absl/base/port.h"
- 
-// This is similar to LOG(severity) << format..., but 
-// * it is to be used ONLY by low-level modules that can't use normal LOG() 
-// * it is designed to be a low-level logger that does not allocate any 
-//   memory and does not need any locks, hence: 
-// * it logs straight and ONLY to STDERR w/o buffering 
-// * it uses an explicit printf-format and arguments list 
-// * it will silently chop off really long message strings 
-// Usage example: 
-//   ABSL_RAW_LOG(ERROR, "Failed foo with %i: %s", status, error); 
-// This will print an almost standard log line like this to stderr only: 
-//   E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file 
- 
-#define ABSL_RAW_LOG(severity, ...)                                            \ 
-  do {                                                                         \ 
-    constexpr const char* absl_raw_logging_internal_basename =                 \ 
+
+// This is similar to LOG(severity) << format..., but
+// * it is to be used ONLY by low-level modules that can't use normal LOG()
+// * it is designed to be a low-level logger that does not allocate any
+//   memory and does not need any locks, hence:
+// * it logs straight and ONLY to STDERR w/o buffering
+// * it uses an explicit printf-format and arguments list
+// * it will silently chop off really long message strings
+// Usage example:
+//   ABSL_RAW_LOG(ERROR, "Failed foo with %i: %s", status, error);
+// This will print an almost standard log line like this to stderr only:
+//   E0821 211317 file.cc:123] RAW: Failed foo with 22: bad_file
+
+#define ABSL_RAW_LOG(severity, ...)                                            \
+  do {                                                                         \
+    constexpr const char* absl_raw_logging_internal_basename =                 \
         ::y_absl::raw_logging_internal::Basename(__FILE__,                       \
-                                               sizeof(__FILE__) - 1);          \ 
+                                               sizeof(__FILE__) - 1);          \
     ::y_absl::raw_logging_internal::RawLog(ABSL_RAW_LOGGING_INTERNAL_##severity, \
-                                         absl_raw_logging_internal_basename,   \ 
-                                         __LINE__, __VA_ARGS__);               \ 
-  } while (0) 
- 
-// Similar to CHECK(condition) << message, but for low-level modules: 
-// we use only ABSL_RAW_LOG that does not allocate memory. 
-// We do not want to provide args list here to encourage this usage: 
-//   if (!cond)  ABSL_RAW_LOG(FATAL, "foo ...", hard_to_compute_args); 
-// so that the args are not computed when not needed. 
-#define ABSL_RAW_CHECK(condition, message)                             \ 
-  do {                                                                 \ 
-    if (ABSL_PREDICT_FALSE(!(condition))) {                            \ 
-      ABSL_RAW_LOG(FATAL, "Check %s failed: %s", #condition, message); \ 
-    }                                                                  \ 
-  } while (0) 
- 
-// ABSL_INTERNAL_LOG and ABSL_INTERNAL_CHECK work like the RAW variants above, 
-// except that if the richer log library is linked into the binary, we dispatch 
-// to that instead.  This is potentially useful for internal logging and 
-// assertions, where we are using RAW_LOG neither for its async-signal-safety 
-// nor for its non-allocating nature, but rather because raw logging has very 
-// few other dependencies. 
-// 
-// The API is a subset of the above: each macro only takes two arguments.  Use 
-// StrCat if you need to build a richer message. 
+                                         absl_raw_logging_internal_basename,   \
+                                         __LINE__, __VA_ARGS__);               \
+  } while (0)
+
+// Similar to CHECK(condition) << message, but for low-level modules:
+// we use only ABSL_RAW_LOG that does not allocate memory.
+// We do not want to provide args list here to encourage this usage:
+//   if (!cond)  ABSL_RAW_LOG(FATAL, "foo ...", hard_to_compute_args);
+// so that the args are not computed when not needed.
+#define ABSL_RAW_CHECK(condition, message)                             \
+  do {                                                                 \
+    if (ABSL_PREDICT_FALSE(!(condition))) {                            \
+      ABSL_RAW_LOG(FATAL, "Check %s failed: %s", #condition, message); \
+    }                                                                  \
+  } while (0)
+
+// ABSL_INTERNAL_LOG and ABSL_INTERNAL_CHECK work like the RAW variants above,
+// except that if the richer log library is linked into the binary, we dispatch
+// to that instead.  This is potentially useful for internal logging and
+// assertions, where we are using RAW_LOG neither for its async-signal-safety
+// nor for its non-allocating nature, but rather because raw logging has very
+// few other dependencies.
+//
+// The API is a subset of the above: each macro only takes two arguments.  Use
+// StrCat if you need to build a richer message.
 #define ABSL_INTERNAL_LOG(severity, message)                                 \
   do {                                                                       \
     constexpr const char* absl_raw_logging_internal_filename = __FILE__;     \
@@ -80,104 +80,104 @@
         absl_raw_logging_internal_filename, __LINE__, message);              \
     if (ABSL_RAW_LOGGING_INTERNAL_##severity == ::y_absl::LogSeverity::kFatal) \
       ABSL_INTERNAL_UNREACHABLE;                                             \
-  } while (0) 
- 
-#define ABSL_INTERNAL_CHECK(condition, message)                    \ 
-  do {                                                             \ 
-    if (ABSL_PREDICT_FALSE(!(condition))) {                        \ 
+  } while (0)
+
+#define ABSL_INTERNAL_CHECK(condition, message)                    \
+  do {                                                             \
+    if (ABSL_PREDICT_FALSE(!(condition))) {                        \
       TString death_message = "Check " #condition " failed: "; \
       death_message += TString(message);                       \
-      ABSL_INTERNAL_LOG(FATAL, death_message);                     \ 
-    }                                                              \ 
-  } while (0) 
- 
+      ABSL_INTERNAL_LOG(FATAL, death_message);                     \
+    }                                                              \
+  } while (0)
+
 #define ABSL_RAW_LOGGING_INTERNAL_INFO ::y_absl::LogSeverity::kInfo
 #define ABSL_RAW_LOGGING_INTERNAL_WARNING ::y_absl::LogSeverity::kWarning
 #define ABSL_RAW_LOGGING_INTERNAL_ERROR ::y_absl::LogSeverity::kError
 #define ABSL_RAW_LOGGING_INTERNAL_FATAL ::y_absl::LogSeverity::kFatal
-#define ABSL_RAW_LOGGING_INTERNAL_LEVEL(severity) \ 
+#define ABSL_RAW_LOGGING_INTERNAL_LEVEL(severity) \
   ::y_absl::NormalizeLogSeverity(severity)
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace raw_logging_internal { 
- 
-// Helper function to implement ABSL_RAW_LOG 
-// Logs format... at "severity" level, reporting it 
-// as called from file:line. 
-// This does not allocate memory or acquire locks. 
+namespace raw_logging_internal {
+
+// Helper function to implement ABSL_RAW_LOG
+// Logs format... at "severity" level, reporting it
+// as called from file:line.
+// This does not allocate memory or acquire locks.
 void RawLog(y_absl::LogSeverity severity, const char* file, int line,
-            const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5); 
- 
-// Writes the provided buffer directly to stderr, in a safe, low-level manner. 
-// 
-// In POSIX this means calling write(), which is async-signal safe and does 
-// not malloc.  If the platform supports the SYS_write syscall, we invoke that 
-// directly to side-step any libc interception. 
-void SafeWriteToStderr(const char *s, size_t len); 
- 
-// compile-time function to get the "base" filename, that is, the part of 
-// a filename after the last "/" or "\" path separator.  The search starts at 
-// the end of the string; the second parameter is the length of the string. 
-constexpr const char* Basename(const char* fname, int offset) { 
-  return offset == 0 || fname[offset - 1] == '/' || fname[offset - 1] == '\\' 
-             ? fname + offset 
-             : Basename(fname, offset - 1); 
-} 
- 
-// For testing only. 
-// Returns true if raw logging is fully supported. When it is not 
-// fully supported, no messages will be emitted, but a log at FATAL 
-// severity will cause an abort. 
-// 
-// TODO(gfalcon): Come up with a better name for this method. 
-bool RawLoggingFullySupported(); 
- 
-// Function type for a raw_logging customization hook for suppressing messages 
-// by severity, and for writing custom prefixes on non-suppressed messages. 
-// 
-// The installed hook is called for every raw log invocation.  The message will 
-// be logged to stderr only if the hook returns true.  FATAL errors will cause 
-// the process to abort, even if writing to stderr is suppressed.  The hook is 
-// also provided with an output buffer, where it can write a custom log message 
-// prefix. 
-// 
-// The raw_logging system does not allocate memory or grab locks.  User-provided 
-// hooks must avoid these operations, and must not throw exceptions. 
-// 
-// 'severity' is the severity level of the message being written. 
-// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro 
-// was located. 
-// 'buffer' and 'buf_size' are pointers to the buffer and buffer size.  If the 
-// hook writes a prefix, it must increment *buffer and decrement *buf_size 
-// accordingly. 
+            const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5);
+
+// Writes the provided buffer directly to stderr, in a safe, low-level manner.
+//
+// In POSIX this means calling write(), which is async-signal safe and does
+// not malloc.  If the platform supports the SYS_write syscall, we invoke that
+// directly to side-step any libc interception.
+void SafeWriteToStderr(const char *s, size_t len);
+
+// compile-time function to get the "base" filename, that is, the part of
+// a filename after the last "/" or "\" path separator.  The search starts at
+// the end of the string; the second parameter is the length of the string.
+constexpr const char* Basename(const char* fname, int offset) {
+  return offset == 0 || fname[offset - 1] == '/' || fname[offset - 1] == '\\'
+             ? fname + offset
+             : Basename(fname, offset - 1);
+}
+
+// For testing only.
+// Returns true if raw logging is fully supported. When it is not
+// fully supported, no messages will be emitted, but a log at FATAL
+// severity will cause an abort.
+//
+// TODO(gfalcon): Come up with a better name for this method.
+bool RawLoggingFullySupported();
+
+// Function type for a raw_logging customization hook for suppressing messages
+// by severity, and for writing custom prefixes on non-suppressed messages.
+//
+// The installed hook is called for every raw log invocation.  The message will
+// be logged to stderr only if the hook returns true.  FATAL errors will cause
+// the process to abort, even if writing to stderr is suppressed.  The hook is
+// also provided with an output buffer, where it can write a custom log message
+// prefix.
+//
+// The raw_logging system does not allocate memory or grab locks.  User-provided
+// hooks must avoid these operations, and must not throw exceptions.
+//
+// 'severity' is the severity level of the message being written.
+// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro
+// was located.
+// 'buffer' and 'buf_size' are pointers to the buffer and buffer size.  If the
+// hook writes a prefix, it must increment *buffer and decrement *buf_size
+// accordingly.
 using LogPrefixHook = bool (*)(y_absl::LogSeverity severity, const char* file,
-                               int line, char** buffer, int* buf_size); 
- 
-// Function type for a raw_logging customization hook called to abort a process 
-// when a FATAL message is logged.  If the provided AbortHook() returns, the 
-// logging system will call abort(). 
-// 
-// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro 
-// was located. 
+                               int line, char** buffer, int* buf_size);
+
+// Function type for a raw_logging customization hook called to abort a process
+// when a FATAL message is logged.  If the provided AbortHook() returns, the
+// logging system will call abort().
+//
+// 'file' and 'line' are the file and line number where the ABSL_RAW_LOG macro
+// was located.
 // The NUL-terminated logged message lives in the buffer between 'buf_start'
-// and 'buf_end'.  'prefix_end' points to the first non-prefix character of the 
-// buffer (as written by the LogPrefixHook.) 
-using AbortHook = void (*)(const char* file, int line, const char* buf_start, 
-                           const char* prefix_end, const char* buf_end); 
- 
-// Internal logging function for ABSL_INTERNAL_LOG to dispatch to. 
-// 
-// TODO(gfalcon): When string_view no longer depends on base, change this 
-// interface to take its message as a string_view instead. 
+// and 'buf_end'.  'prefix_end' points to the first non-prefix character of the
+// buffer (as written by the LogPrefixHook.)
+using AbortHook = void (*)(const char* file, int line, const char* buf_start,
+                           const char* prefix_end, const char* buf_end);
+
+// Internal logging function for ABSL_INTERNAL_LOG to dispatch to.
+//
+// TODO(gfalcon): When string_view no longer depends on base, change this
+// interface to take its message as a string_view instead.
 using InternalLogFunction = void (*)(y_absl::LogSeverity severity,
-                                     const char* file, int line, 
+                                     const char* file, int line,
                                      const TString& message);
- 
+
 ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES ABSL_DLL extern base_internal::AtomicHook<
     InternalLogFunction>
     internal_log_function;
- 
+
 // Registers hooks of the above types.  Only a single hook of each type may be
 // registered.  It is an error to call these functions multiple times with
 // different input arguments.
@@ -186,10 +186,10 @@ ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES ABSL_DLL extern base_internal::AtomicHook<
 // not block or malloc, and are async-signal safe.
 void RegisterLogPrefixHook(LogPrefixHook func);
 void RegisterAbortHook(AbortHook func);
-void RegisterInternalLogFunction(InternalLogFunction func); 
- 
-}  // namespace raw_logging_internal 
+void RegisterInternalLogFunction(InternalLogFunction func);
+
+}  // namespace raw_logging_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_RAW_LOGGING_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_RAW_LOGGING_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/ya.make b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/ya.make
index cf4664616a..e7cfe7d216 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/ya.make
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/ya.make
@@ -1,30 +1,30 @@
-# Generated by devtools/yamaker. 
- 
-LIBRARY() 
- 
+# Generated by devtools/yamaker.
+
+LIBRARY()
+
 WITHOUT_LICENSE_TEXTS()
- 
+
 OWNER(
     somov
     g:cpp-contrib
 )
 
-LICENSE(Apache-2.0) 
- 
-PEERDIR( 
+LICENSE(Apache-2.0)
+
+PEERDIR(
     contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity
-) 
- 
+)
+
 ADDINCL(
     GLOBAL contrib/restricted/abseil-cpp-tstring
 )
- 
-NO_COMPILER_WARNINGS() 
- 
+
+NO_COMPILER_WARNINGS()
+
 SRCDIR(contrib/restricted/abseil-cpp-tstring/y_absl/base/internal)
- 
-SRCS( 
-    raw_logging.cc 
-) 
- 
-END() 
+
+SRCS(
+    raw_logging.cc
+)
+
+END()
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scheduling_mode.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scheduling_mode.h
index 1d6bfb9d8d..0165e7233b 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scheduling_mode.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scheduling_mode.h
@@ -1,58 +1,58 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// Core interfaces and definitions used by by low-level interfaces such as 
-// SpinLock. 
- 
-#ifndef ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_ 
-#define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Core interfaces and definitions used by by low-level interfaces such as
+// SpinLock.
+
+#ifndef ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
+#define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
+
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// Used to describe how a thread may be scheduled.  Typically associated with 
-// the declaration of a resource supporting synchronized access. 
-// 
-// SCHEDULE_COOPERATIVE_AND_KERNEL: 
-// Specifies that when waiting, a cooperative thread (e.g. a Fiber) may 
-// reschedule (using base::scheduling semantics); allowing other cooperative 
-// threads to proceed. 
-// 
-// SCHEDULE_KERNEL_ONLY: (Also described as "non-cooperative") 
-// Specifies that no cooperative scheduling semantics may be used, even if the 
-// current thread is itself cooperatively scheduled.  This means that 
-// cooperative threads will NOT allow other cooperative threads to execute in 
-// their place while waiting for a resource of this type.  Host operating system 
-// semantics (e.g. a futex) may still be used. 
-// 
-// When optional, clients should strongly prefer SCHEDULE_COOPERATIVE_AND_KERNEL 
-// by default.  SCHEDULE_KERNEL_ONLY should only be used for resources on which 
-// base::scheduling (e.g. the implementation of a Scheduler) may depend. 
-// 
-// NOTE: Cooperative resources may not be nested below non-cooperative ones. 
-// This means that it is invalid to to acquire a SCHEDULE_COOPERATIVE_AND_KERNEL 
-// resource if a SCHEDULE_KERNEL_ONLY resource is already held. 
-enum SchedulingMode { 
-  SCHEDULE_KERNEL_ONLY = 0,         // Allow scheduling only the host OS. 
-  SCHEDULE_COOPERATIVE_AND_KERNEL,  // Also allow cooperative scheduling. 
-}; 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+// Used to describe how a thread may be scheduled.  Typically associated with
+// the declaration of a resource supporting synchronized access.
+//
+// SCHEDULE_COOPERATIVE_AND_KERNEL:
+// Specifies that when waiting, a cooperative thread (e.g. a Fiber) may
+// reschedule (using base::scheduling semantics); allowing other cooperative
+// threads to proceed.
+//
+// SCHEDULE_KERNEL_ONLY: (Also described as "non-cooperative")
+// Specifies that no cooperative scheduling semantics may be used, even if the
+// current thread is itself cooperatively scheduled.  This means that
+// cooperative threads will NOT allow other cooperative threads to execute in
+// their place while waiting for a resource of this type.  Host operating system
+// semantics (e.g. a futex) may still be used.
+//
+// When optional, clients should strongly prefer SCHEDULE_COOPERATIVE_AND_KERNEL
+// by default.  SCHEDULE_KERNEL_ONLY should only be used for resources on which
+// base::scheduling (e.g. the implementation of a Scheduler) may depend.
+//
+// NOTE: Cooperative resources may not be nested below non-cooperative ones.
+// This means that it is invalid to to acquire a SCHEDULE_COOPERATIVE_AND_KERNEL
+// resource if a SCHEDULE_KERNEL_ONLY resource is already held.
+enum SchedulingMode {
+  SCHEDULE_KERNEL_ONLY = 0,         // Allow scheduling only the host OS.
+  SCHEDULE_COOPERATIVE_AND_KERNEL,  // Also allow cooperative scheduling.
+};
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc
index 66cd3b361e..e489272b45 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc
@@ -1,81 +1,81 @@
-// Copyright 2019 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/scoped_set_env.h"
- 
-#ifdef _WIN32 
-#include <windows.h> 
-#endif 
- 
-#include <cstdlib> 
- 
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include <cstdlib>
+
 #include "y_absl/base/internal/raw_logging.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-namespace { 
- 
-#ifdef _WIN32 
-const int kMaxEnvVarValueSize = 1024; 
-#endif 
- 
-void SetEnvVar(const char* name, const char* value) { 
-#ifdef _WIN32 
-  SetEnvironmentVariableA(name, value); 
-#else 
-  if (value == nullptr) { 
-    ::unsetenv(name); 
-  } else { 
-    ::setenv(name, value, 1); 
-  } 
-#endif 
-} 
- 
-}  // namespace 
- 
-ScopedSetEnv::ScopedSetEnv(const char* var_name, const char* new_value) 
-    : var_name_(var_name), was_unset_(false) { 
-#ifdef _WIN32 
-  char buf[kMaxEnvVarValueSize]; 
-  auto get_res = GetEnvironmentVariableA(var_name_.c_str(), buf, sizeof(buf)); 
-  ABSL_INTERNAL_CHECK(get_res < sizeof(buf), "value exceeds buffer size"); 
- 
-  if (get_res == 0) { 
-    was_unset_ = (GetLastError() == ERROR_ENVVAR_NOT_FOUND); 
-  } else { 
-    old_value_.assign(buf, get_res); 
-  } 
- 
-  SetEnvironmentVariableA(var_name_.c_str(), new_value); 
-#else 
-  const char* val = ::getenv(var_name_.c_str()); 
-  if (val == nullptr) { 
-    was_unset_ = true; 
-  } else { 
-    old_value_ = val; 
-  } 
-#endif 
- 
-  SetEnvVar(var_name_.c_str(), new_value); 
-} 
- 
-ScopedSetEnv::~ScopedSetEnv() { 
-  SetEnvVar(var_name_.c_str(), was_unset_ ? nullptr : old_value_.c_str()); 
-} 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+namespace {
+
+#ifdef _WIN32
+const int kMaxEnvVarValueSize = 1024;
+#endif
+
+void SetEnvVar(const char* name, const char* value) {
+#ifdef _WIN32
+  SetEnvironmentVariableA(name, value);
+#else
+  if (value == nullptr) {
+    ::unsetenv(name);
+  } else {
+    ::setenv(name, value, 1);
+  }
+#endif
+}
+
+}  // namespace
+
+ScopedSetEnv::ScopedSetEnv(const char* var_name, const char* new_value)
+    : var_name_(var_name), was_unset_(false) {
+#ifdef _WIN32
+  char buf[kMaxEnvVarValueSize];
+  auto get_res = GetEnvironmentVariableA(var_name_.c_str(), buf, sizeof(buf));
+  ABSL_INTERNAL_CHECK(get_res < sizeof(buf), "value exceeds buffer size");
+
+  if (get_res == 0) {
+    was_unset_ = (GetLastError() == ERROR_ENVVAR_NOT_FOUND);
+  } else {
+    old_value_.assign(buf, get_res);
+  }
+
+  SetEnvironmentVariableA(var_name_.c_str(), new_value);
+#else
+  const char* val = ::getenv(var_name_.c_str());
+  if (val == nullptr) {
+    was_unset_ = true;
+  } else {
+    old_value_ = val;
+  }
+#endif
+
+  SetEnvVar(var_name_.c_str(), new_value);
+}
+
+ScopedSetEnv::~ScopedSetEnv() {
+  SetEnvVar(var_name_.c_str(), was_unset_ ? nullptr : old_value_.c_str());
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.h
index 4203df2ed5..5641562f1b 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.h
@@ -1,45 +1,45 @@
-// 
-// Copyright 2019 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_ 
-#define ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_ 
- 
+//
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
+#define ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
+
 #include <util/generic/string.h>
 
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-class ScopedSetEnv { 
- public: 
-  ScopedSetEnv(const char* var_name, const char* new_value); 
-  ~ScopedSetEnv(); 
- 
- private: 
+namespace base_internal {
+
+class ScopedSetEnv {
+ public:
+  ScopedSetEnv(const char* var_name, const char* new_value);
+  ~ScopedSetEnv();
+
+ private:
   TString var_name_;
   TString old_value_;
- 
-  // True if the environment variable was initially not set. 
-  bool was_unset_; 
-}; 
- 
-}  // namespace base_internal 
+
+  // True if the environment variable was initially not set.
+  bool was_unset_;
+};
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.cc
index 07ca45b3d4..2ee7cde432 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.cc
@@ -1,71 +1,71 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/spinlock.h"
- 
-#include <algorithm> 
-#include <atomic> 
-#include <limits> 
- 
+
+#include <algorithm>
+#include <atomic>
+#include <limits>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/internal/atomic_hook.h"
 #include "y_absl/base/internal/cycleclock.h"
 #include "y_absl/base/internal/spinlock_wait.h"
 #include "y_absl/base/internal/sysinfo.h" /* For NumCPUs() */
 #include "y_absl/base/call_once.h"
- 
-// Description of lock-word: 
-//  31..00: [............................3][2][1][0] 
-// 
-//     [0]: kSpinLockHeld 
-//     [1]: kSpinLockCooperative 
-//     [2]: kSpinLockDisabledScheduling 
-// [31..3]: ONLY kSpinLockSleeper OR 
-//          Wait time in cycles >> PROFILE_TIMESTAMP_SHIFT 
-// 
-// Detailed descriptions: 
-// 
-// Bit [0]: The lock is considered held iff kSpinLockHeld is set. 
-// 
-// Bit [1]: Eligible waiters (e.g. Fibers) may co-operatively reschedule when 
-//          contended iff kSpinLockCooperative is set. 
-// 
-// Bit [2]: This bit is exclusive from bit [1].  It is used only by a 
-//          non-cooperative lock.  When set, indicates that scheduling was 
-//          successfully disabled when the lock was acquired.  May be unset, 
-//          even if non-cooperative, if a ThreadIdentity did not yet exist at 
-//          time of acquisition. 
-// 
-// Bit [3]: If this is the only upper bit ([31..3]) set then this lock was 
-//          acquired without contention, however, at least one waiter exists. 
-// 
-//          Otherwise, bits [31..3] represent the time spent by the current lock 
-//          holder to acquire the lock.  There may be outstanding waiter(s). 
- 
+
+// Description of lock-word:
+//  31..00: [............................3][2][1][0]
+//
+//     [0]: kSpinLockHeld
+//     [1]: kSpinLockCooperative
+//     [2]: kSpinLockDisabledScheduling
+// [31..3]: ONLY kSpinLockSleeper OR
+//          Wait time in cycles >> PROFILE_TIMESTAMP_SHIFT
+//
+// Detailed descriptions:
+//
+// Bit [0]: The lock is considered held iff kSpinLockHeld is set.
+//
+// Bit [1]: Eligible waiters (e.g. Fibers) may co-operatively reschedule when
+//          contended iff kSpinLockCooperative is set.
+//
+// Bit [2]: This bit is exclusive from bit [1].  It is used only by a
+//          non-cooperative lock.  When set, indicates that scheduling was
+//          successfully disabled when the lock was acquired.  May be unset,
+//          even if non-cooperative, if a ThreadIdentity did not yet exist at
+//          time of acquisition.
+//
+// Bit [3]: If this is the only upper bit ([31..3]) set then this lock was
+//          acquired without contention, however, at least one waiter exists.
+//
+//          Otherwise, bits [31..3] represent the time spent by the current lock
+//          holder to acquire the lock.  There may be outstanding waiter(s).
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
+namespace base_internal {
+
 ABSL_INTERNAL_ATOMIC_HOOK_ATTRIBUTES static base_internal::AtomicHook<void (*)(
     const void *lock, int64_t wait_cycles)>
-    submit_profile_data; 
- 
-void RegisterSpinLockProfiler(void (*fn)(const void *contendedlock, 
-                                         int64_t wait_cycles)) { 
-  submit_profile_data.Store(fn); 
-} 
- 
+    submit_profile_data;
+
+void RegisterSpinLockProfiler(void (*fn)(const void *contendedlock,
+                                         int64_t wait_cycles)) {
+  submit_profile_data.Store(fn);
+}
+
 // Static member variable definitions.
 constexpr uint32_t SpinLock::kSpinLockHeld;
 constexpr uint32_t SpinLock::kSpinLockCooperative;
@@ -73,38 +73,38 @@ constexpr uint32_t SpinLock::kSpinLockDisabledScheduling;
 constexpr uint32_t SpinLock::kSpinLockSleeper;
 constexpr uint32_t SpinLock::kWaitTimeMask;
 
-// Uncommon constructors. 
-SpinLock::SpinLock(base_internal::SchedulingMode mode) 
-    : lockword_(IsCooperative(mode) ? kSpinLockCooperative : 0) { 
-  ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static); 
-} 
- 
-// Monitor the lock to see if its value changes within some time period 
-// (adaptive_spin_count loop iterations). The last value read from the lock 
-// is returned from the method. 
-uint32_t SpinLock::SpinLoop() { 
-  // We are already in the slow path of SpinLock, initialize the 
-  // adaptive_spin_count here. 
+// Uncommon constructors.
+SpinLock::SpinLock(base_internal::SchedulingMode mode)
+    : lockword_(IsCooperative(mode) ? kSpinLockCooperative : 0) {
+  ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
+}
+
+// Monitor the lock to see if its value changes within some time period
+// (adaptive_spin_count loop iterations). The last value read from the lock
+// is returned from the method.
+uint32_t SpinLock::SpinLoop() {
+  // We are already in the slow path of SpinLock, initialize the
+  // adaptive_spin_count here.
   ABSL_CONST_INIT static y_absl::once_flag init_adaptive_spin_count;
-  ABSL_CONST_INIT static int adaptive_spin_count = 0; 
-  base_internal::LowLevelCallOnce(&init_adaptive_spin_count, []() { 
-    adaptive_spin_count = base_internal::NumCPUs() > 1 ? 1000 : 1; 
-  }); 
- 
-  int c = adaptive_spin_count; 
-  uint32_t lock_value; 
-  do { 
-    lock_value = lockword_.load(std::memory_order_relaxed); 
-  } while ((lock_value & kSpinLockHeld) != 0 && --c > 0); 
-  return lock_value; 
-} 
- 
-void SpinLock::SlowLock() { 
-  uint32_t lock_value = SpinLoop(); 
-  lock_value = TryLockInternal(lock_value, 0); 
-  if ((lock_value & kSpinLockHeld) == 0) { 
-    return; 
-  } 
+  ABSL_CONST_INIT static int adaptive_spin_count = 0;
+  base_internal::LowLevelCallOnce(&init_adaptive_spin_count, []() {
+    adaptive_spin_count = base_internal::NumCPUs() > 1 ? 1000 : 1;
+  });
+
+  int c = adaptive_spin_count;
+  uint32_t lock_value;
+  do {
+    lock_value = lockword_.load(std::memory_order_relaxed);
+  } while ((lock_value & kSpinLockHeld) != 0 && --c > 0);
+  return lock_value;
+}
+
+void SpinLock::SlowLock() {
+  uint32_t lock_value = SpinLoop();
+  lock_value = TryLockInternal(lock_value, 0);
+  if ((lock_value & kSpinLockHeld) == 0) {
+    return;
+  }
 
   base_internal::SchedulingMode scheduling_mode;
   if ((lock_value & kSpinLockCooperative) != 0) {
@@ -113,34 +113,34 @@ void SpinLock::SlowLock() {
     scheduling_mode = base_internal::SCHEDULE_KERNEL_ONLY;
   }
 
-  // The lock was not obtained initially, so this thread needs to wait for 
-  // it.  Record the current timestamp in the local variable wait_start_time 
-  // so the total wait time can be stored in the lockword once this thread 
-  // obtains the lock. 
-  int64_t wait_start_time = CycleClock::Now(); 
-  uint32_t wait_cycles = 0; 
-  int lock_wait_call_count = 0; 
-  while ((lock_value & kSpinLockHeld) != 0) { 
-    // If the lock is currently held, but not marked as having a sleeper, mark 
-    // it as having a sleeper. 
-    if ((lock_value & kWaitTimeMask) == 0) { 
-      // Here, just "mark" that the thread is going to sleep.  Don't store the 
+  // The lock was not obtained initially, so this thread needs to wait for
+  // it.  Record the current timestamp in the local variable wait_start_time
+  // so the total wait time can be stored in the lockword once this thread
+  // obtains the lock.
+  int64_t wait_start_time = CycleClock::Now();
+  uint32_t wait_cycles = 0;
+  int lock_wait_call_count = 0;
+  while ((lock_value & kSpinLockHeld) != 0) {
+    // If the lock is currently held, but not marked as having a sleeper, mark
+    // it as having a sleeper.
+    if ((lock_value & kWaitTimeMask) == 0) {
+      // Here, just "mark" that the thread is going to sleep.  Don't store the
       // lock wait time in the lock -- the lock word stores the amount of time
       // that the current holder waited before acquiring the lock, not the wait
       // time of any thread currently waiting to acquire it.
-      if (lockword_.compare_exchange_strong( 
-              lock_value, lock_value | kSpinLockSleeper, 
-              std::memory_order_relaxed, std::memory_order_relaxed)) { 
-        // Successfully transitioned to kSpinLockSleeper.  Pass 
-        // kSpinLockSleeper to the SpinLockWait routine to properly indicate 
-        // the last lock_value observed. 
-        lock_value |= kSpinLockSleeper; 
-      } else if ((lock_value & kSpinLockHeld) == 0) { 
-        // Lock is free again, so try and acquire it before sleeping.  The 
-        // new lock state will be the number of cycles this thread waited if 
-        // this thread obtains the lock. 
-        lock_value = TryLockInternal(lock_value, wait_cycles); 
-        continue;   // Skip the delay at the end of the loop. 
+      if (lockword_.compare_exchange_strong(
+              lock_value, lock_value | kSpinLockSleeper,
+              std::memory_order_relaxed, std::memory_order_relaxed)) {
+        // Successfully transitioned to kSpinLockSleeper.  Pass
+        // kSpinLockSleeper to the SpinLockWait routine to properly indicate
+        // the last lock_value observed.
+        lock_value |= kSpinLockSleeper;
+      } else if ((lock_value & kSpinLockHeld) == 0) {
+        // Lock is free again, so try and acquire it before sleeping.  The
+        // new lock state will be the number of cycles this thread waited if
+        // this thread obtains the lock.
+        lock_value = TryLockInternal(lock_value, wait_cycles);
+        continue;   // Skip the delay at the end of the loop.
       } else if ((lock_value & kWaitTimeMask) == 0) {
         // The lock is still held, without a waiter being marked, but something
         // else about the lock word changed, causing our CAS to fail. For
@@ -149,81 +149,81 @@ void SpinLock::SlowLock() {
         // set that flag. In this case, attempt again to mark ourselves as a
         // waiter.
         continue;
-      } 
-    } 
- 
-    // SpinLockDelay() calls into fiber scheduler, we need to see 
-    // synchronization there to avoid false positives. 
-    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0); 
-    // Wait for an OS specific delay. 
-    base_internal::SpinLockDelay(&lockword_, lock_value, ++lock_wait_call_count, 
-                                 scheduling_mode); 
-    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0); 
-    // Spin again after returning from the wait routine to give this thread 
-    // some chance of obtaining the lock. 
-    lock_value = SpinLoop(); 
-    wait_cycles = EncodeWaitCycles(wait_start_time, CycleClock::Now()); 
-    lock_value = TryLockInternal(lock_value, wait_cycles); 
-  } 
-} 
- 
-void SpinLock::SlowUnlock(uint32_t lock_value) { 
-  base_internal::SpinLockWake(&lockword_, 
-                              false);  // wake waiter if necessary 
- 
-  // If our acquisition was contended, collect contentionz profile info.  We 
-  // reserve a unitary wait time to represent that a waiter exists without our 
-  // own acquisition having been contended. 
-  if ((lock_value & kWaitTimeMask) != kSpinLockSleeper) { 
-    const uint64_t wait_cycles = DecodeWaitCycles(lock_value); 
-    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0); 
-    submit_profile_data(this, wait_cycles); 
-    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0); 
-  } 
-} 
- 
-// We use the upper 29 bits of the lock word to store the time spent waiting to 
-// acquire this lock.  This is reported by contentionz profiling.  Since the 
-// lower bits of the cycle counter wrap very quickly on high-frequency 
+      }
+    }
+
+    // SpinLockDelay() calls into fiber scheduler, we need to see
+    // synchronization there to avoid false positives.
+    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0);
+    // Wait for an OS specific delay.
+    base_internal::SpinLockDelay(&lockword_, lock_value, ++lock_wait_call_count,
+                                 scheduling_mode);
+    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0);
+    // Spin again after returning from the wait routine to give this thread
+    // some chance of obtaining the lock.
+    lock_value = SpinLoop();
+    wait_cycles = EncodeWaitCycles(wait_start_time, CycleClock::Now());
+    lock_value = TryLockInternal(lock_value, wait_cycles);
+  }
+}
+
+void SpinLock::SlowUnlock(uint32_t lock_value) {
+  base_internal::SpinLockWake(&lockword_,
+                              false);  // wake waiter if necessary
+
+  // If our acquisition was contended, collect contentionz profile info.  We
+  // reserve a unitary wait time to represent that a waiter exists without our
+  // own acquisition having been contended.
+  if ((lock_value & kWaitTimeMask) != kSpinLockSleeper) {
+    const uint64_t wait_cycles = DecodeWaitCycles(lock_value);
+    ABSL_TSAN_MUTEX_PRE_DIVERT(this, 0);
+    submit_profile_data(this, wait_cycles);
+    ABSL_TSAN_MUTEX_POST_DIVERT(this, 0);
+  }
+}
+
+// We use the upper 29 bits of the lock word to store the time spent waiting to
+// acquire this lock.  This is reported by contentionz profiling.  Since the
+// lower bits of the cycle counter wrap very quickly on high-frequency
 // processors we divide to reduce the granularity to 2^kProfileTimestampShift
-// sized units.  On a 4Ghz machine this will lose track of wait times greater 
-// than (2^29/4 Ghz)*128 =~ 17.2 seconds.  Such waits should be extremely rare. 
+// sized units.  On a 4Ghz machine this will lose track of wait times greater
+// than (2^29/4 Ghz)*128 =~ 17.2 seconds.  Such waits should be extremely rare.
 static constexpr int kProfileTimestampShift = 7;
- 
+
 // We currently reserve the lower 3 bits.
 static constexpr int kLockwordReservedShift = 3;
 
-uint32_t SpinLock::EncodeWaitCycles(int64_t wait_start_time, 
-                                    int64_t wait_end_time) { 
-  static const int64_t kMaxWaitTime = 
+uint32_t SpinLock::EncodeWaitCycles(int64_t wait_start_time,
+                                    int64_t wait_end_time) {
+  static const int64_t kMaxWaitTime =
       std::numeric_limits<uint32_t>::max() >> kLockwordReservedShift;
-  int64_t scaled_wait_time = 
+  int64_t scaled_wait_time =
       (wait_end_time - wait_start_time) >> kProfileTimestampShift;
- 
-  // Return a representation of the time spent waiting that can be stored in 
-  // the lock word's upper bits. 
-  uint32_t clamped = static_cast<uint32_t>( 
+
+  // Return a representation of the time spent waiting that can be stored in
+  // the lock word's upper bits.
+  uint32_t clamped = static_cast<uint32_t>(
       std::min(scaled_wait_time, kMaxWaitTime) << kLockwordReservedShift);
- 
-  if (clamped == 0) { 
-    return kSpinLockSleeper;  // Just wake waiters, but don't record contention. 
-  } 
-  // Bump up value if necessary to avoid returning kSpinLockSleeper. 
-  const uint32_t kMinWaitTime = 
+
+  if (clamped == 0) {
+    return kSpinLockSleeper;  // Just wake waiters, but don't record contention.
+  }
+  // Bump up value if necessary to avoid returning kSpinLockSleeper.
+  const uint32_t kMinWaitTime =
       kSpinLockSleeper + (1 << kLockwordReservedShift);
-  if (clamped == kSpinLockSleeper) { 
-    return kMinWaitTime; 
-  } 
-  return clamped; 
-} 
- 
-uint64_t SpinLock::DecodeWaitCycles(uint32_t lock_value) { 
-  // Cast to uint32_t first to ensure bits [63:32] are cleared. 
-  const uint64_t scaled_wait_time = 
-      static_cast<uint32_t>(lock_value & kWaitTimeMask); 
+  if (clamped == kSpinLockSleeper) {
+    return kMinWaitTime;
+  }
+  return clamped;
+}
+
+uint64_t SpinLock::DecodeWaitCycles(uint32_t lock_value) {
+  // Cast to uint32_t first to ensure bits [63:32] are cleared.
+  const uint64_t scaled_wait_time =
+      static_cast<uint32_t>(lock_value & kWaitTimeMask);
   return scaled_wait_time << (kProfileTimestampShift - kLockwordReservedShift);
-} 
- 
-}  // namespace base_internal 
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.h
index 936d0ecee9..ef88cb52c0 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.h
@@ -1,39 +1,39 @@
-// 
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-//  Most users requiring mutual exclusion should use Mutex. 
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+//  Most users requiring mutual exclusion should use Mutex.
 //  SpinLock is provided for use in two situations:
 //   - for use by Abseil internal code that Mutex itself depends on
-//   - for async signal safety (see below) 
- 
-// SpinLock is async signal safe.  If a spinlock is used within a signal 
-// handler, all code that acquires the lock must ensure that the signal cannot 
-// arrive while they are holding the lock.  Typically, this is done by blocking 
-// the signal. 
+//   - for async signal safety (see below)
+
+// SpinLock is async signal safe.  If a spinlock is used within a signal
+// handler, all code that acquires the lock must ensure that the signal cannot
+// arrive while they are holding the lock.  Typically, this is done by blocking
+// the signal.
 //
 // Threads waiting on a SpinLock may be woken in an arbitrary order.
- 
-#ifndef ABSL_BASE_INTERNAL_SPINLOCK_H_ 
-#define ABSL_BASE_INTERNAL_SPINLOCK_H_ 
- 
-#include <stdint.h> 
-#include <sys/types.h> 
- 
-#include <atomic> 
- 
+
+#ifndef ABSL_BASE_INTERNAL_SPINLOCK_H_
+#define ABSL_BASE_INTERNAL_SPINLOCK_H_
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <atomic>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/const_init.h"
 #include "y_absl/base/dynamic_annotations.h"
@@ -44,21 +44,21 @@
 #include "y_absl/base/macros.h"
 #include "y_absl/base/port.h"
 #include "y_absl/base/thread_annotations.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-class ABSL_LOCKABLE SpinLock { 
- public: 
-  SpinLock() : lockword_(kSpinLockCooperative) { 
-    ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static); 
-  } 
- 
-  // Constructors that allow non-cooperative spinlocks to be created for use 
-  // inside thread schedulers.  Normal clients should not use these. 
-  explicit SpinLock(base_internal::SchedulingMode mode); 
- 
+namespace base_internal {
+
+class ABSL_LOCKABLE SpinLock {
+ public:
+  SpinLock() : lockword_(kSpinLockCooperative) {
+    ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
+  }
+
+  // Constructors that allow non-cooperative spinlocks to be created for use
+  // inside thread schedulers.  Normal clients should not use these.
+  explicit SpinLock(base_internal::SchedulingMode mode);
+
   // Constructor for global SpinLock instances.  See y_absl/base/const_init.h.
   constexpr SpinLock(y_absl::ConstInitType, base_internal::SchedulingMode mode)
       : lockword_(IsCooperative(mode) ? kSpinLockCooperative : 0) {}
@@ -67,81 +67,81 @@ class ABSL_LOCKABLE SpinLock {
   // Default but non-trivial destructor in some build configurations causes an
   // extra static initializer.
 #ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE
-  ~SpinLock() { ABSL_TSAN_MUTEX_DESTROY(this, __tsan_mutex_not_static); } 
+  ~SpinLock() { ABSL_TSAN_MUTEX_DESTROY(this, __tsan_mutex_not_static); }
 #else
   ~SpinLock() = default;
 #endif
- 
-  // Acquire this SpinLock. 
-  inline void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION() { 
-    ABSL_TSAN_MUTEX_PRE_LOCK(this, 0); 
-    if (!TryLockImpl()) { 
-      SlowLock(); 
-    } 
-    ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0); 
-  } 
- 
-  // Try to acquire this SpinLock without blocking and return true if the 
-  // acquisition was successful.  If the lock was not acquired, false is 
-  // returned.  If this SpinLock is free at the time of the call, TryLock 
-  // will return true with high probability. 
-  inline bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) { 
-    ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_try_lock); 
-    bool res = TryLockImpl(); 
-    ABSL_TSAN_MUTEX_POST_LOCK( 
-        this, __tsan_mutex_try_lock | (res ? 0 : __tsan_mutex_try_lock_failed), 
-        0); 
-    return res; 
-  } 
- 
-  // Release this SpinLock, which must be held by the calling thread. 
-  inline void Unlock() ABSL_UNLOCK_FUNCTION() { 
-    ABSL_TSAN_MUTEX_PRE_UNLOCK(this, 0); 
-    uint32_t lock_value = lockword_.load(std::memory_order_relaxed); 
-    lock_value = lockword_.exchange(lock_value & kSpinLockCooperative, 
-                                    std::memory_order_release); 
- 
-    if ((lock_value & kSpinLockDisabledScheduling) != 0) { 
-      base_internal::SchedulingGuard::EnableRescheduling(true); 
-    } 
-    if ((lock_value & kWaitTimeMask) != 0) { 
-      // Collect contentionz profile info, and speed the wakeup of any waiter. 
-      // The wait_cycles value indicates how long this thread spent waiting 
-      // for the lock. 
-      SlowUnlock(lock_value); 
-    } 
-    ABSL_TSAN_MUTEX_POST_UNLOCK(this, 0); 
-  } 
- 
-  // Determine if the lock is held.  When the lock is held by the invoking 
-  // thread, true will always be returned. Intended to be used as 
-  // CHECK(lock.IsHeld()). 
-  inline bool IsHeld() const { 
-    return (lockword_.load(std::memory_order_relaxed) & kSpinLockHeld) != 0; 
-  } 
- 
- protected: 
-  // These should not be exported except for testing. 
- 
-  // Store number of cycles between wait_start_time and wait_end_time in a 
-  // lock value. 
-  static uint32_t EncodeWaitCycles(int64_t wait_start_time, 
-                                   int64_t wait_end_time); 
- 
-  // Extract number of wait cycles in a lock value. 
-  static uint64_t DecodeWaitCycles(uint32_t lock_value); 
- 
-  // Provide access to protected method above.  Use for testing only. 
-  friend struct SpinLockTest; 
- 
- private: 
-  // lockword_ is used to store the following: 
-  // 
-  // bit[0] encodes whether a lock is being held. 
-  // bit[1] encodes whether a lock uses cooperative scheduling. 
+
+  // Acquire this SpinLock.
+  inline void Lock() ABSL_EXCLUSIVE_LOCK_FUNCTION() {
+    ABSL_TSAN_MUTEX_PRE_LOCK(this, 0);
+    if (!TryLockImpl()) {
+      SlowLock();
+    }
+    ABSL_TSAN_MUTEX_POST_LOCK(this, 0, 0);
+  }
+
+  // Try to acquire this SpinLock without blocking and return true if the
+  // acquisition was successful.  If the lock was not acquired, false is
+  // returned.  If this SpinLock is free at the time of the call, TryLock
+  // will return true with high probability.
+  inline bool TryLock() ABSL_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
+    ABSL_TSAN_MUTEX_PRE_LOCK(this, __tsan_mutex_try_lock);
+    bool res = TryLockImpl();
+    ABSL_TSAN_MUTEX_POST_LOCK(
+        this, __tsan_mutex_try_lock | (res ? 0 : __tsan_mutex_try_lock_failed),
+        0);
+    return res;
+  }
+
+  // Release this SpinLock, which must be held by the calling thread.
+  inline void Unlock() ABSL_UNLOCK_FUNCTION() {
+    ABSL_TSAN_MUTEX_PRE_UNLOCK(this, 0);
+    uint32_t lock_value = lockword_.load(std::memory_order_relaxed);
+    lock_value = lockword_.exchange(lock_value & kSpinLockCooperative,
+                                    std::memory_order_release);
+
+    if ((lock_value & kSpinLockDisabledScheduling) != 0) {
+      base_internal::SchedulingGuard::EnableRescheduling(true);
+    }
+    if ((lock_value & kWaitTimeMask) != 0) {
+      // Collect contentionz profile info, and speed the wakeup of any waiter.
+      // The wait_cycles value indicates how long this thread spent waiting
+      // for the lock.
+      SlowUnlock(lock_value);
+    }
+    ABSL_TSAN_MUTEX_POST_UNLOCK(this, 0);
+  }
+
+  // Determine if the lock is held.  When the lock is held by the invoking
+  // thread, true will always be returned. Intended to be used as
+  // CHECK(lock.IsHeld()).
+  inline bool IsHeld() const {
+    return (lockword_.load(std::memory_order_relaxed) & kSpinLockHeld) != 0;
+  }
+
+ protected:
+  // These should not be exported except for testing.
+
+  // Store number of cycles between wait_start_time and wait_end_time in a
+  // lock value.
+  static uint32_t EncodeWaitCycles(int64_t wait_start_time,
+                                   int64_t wait_end_time);
+
+  // Extract number of wait cycles in a lock value.
+  static uint64_t DecodeWaitCycles(uint32_t lock_value);
+
+  // Provide access to protected method above.  Use for testing only.
+  friend struct SpinLockTest;
+
+ private:
+  // lockword_ is used to store the following:
+  //
+  // bit[0] encodes whether a lock is being held.
+  // bit[1] encodes whether a lock uses cooperative scheduling.
   // bit[2] encodes whether the current lock holder disabled scheduling when
   //        acquiring the lock. Only set when kSpinLockHeld is also set.
-  // bit[3:31] encodes time a lock spent on waiting as a 29-bit unsigned int. 
+  // bit[3:31] encodes time a lock spent on waiting as a 29-bit unsigned int.
   //        This is set by the lock holder to indicate how long it waited on
   //        the lock before eventually acquiring it. The number of cycles is
   //        encoded as a 29-bit unsigned int, or in the case that the current
@@ -160,89 +160,89 @@ class ABSL_LOCKABLE SpinLock {
   // Includes kSpinLockSleeper.
   static constexpr uint32_t kWaitTimeMask =
       ~(kSpinLockHeld | kSpinLockCooperative | kSpinLockDisabledScheduling);
- 
-  // Returns true if the provided scheduling mode is cooperative. 
-  static constexpr bool IsCooperative( 
-      base_internal::SchedulingMode scheduling_mode) { 
-    return scheduling_mode == base_internal::SCHEDULE_COOPERATIVE_AND_KERNEL; 
-  } 
- 
-  uint32_t TryLockInternal(uint32_t lock_value, uint32_t wait_cycles); 
-  void SlowLock() ABSL_ATTRIBUTE_COLD; 
-  void SlowUnlock(uint32_t lock_value) ABSL_ATTRIBUTE_COLD; 
-  uint32_t SpinLoop(); 
- 
-  inline bool TryLockImpl() { 
-    uint32_t lock_value = lockword_.load(std::memory_order_relaxed); 
-    return (TryLockInternal(lock_value, 0) & kSpinLockHeld) == 0; 
-  } 
- 
-  std::atomic<uint32_t> lockword_; 
- 
-  SpinLock(const SpinLock&) = delete; 
-  SpinLock& operator=(const SpinLock&) = delete; 
-}; 
- 
-// Corresponding locker object that arranges to acquire a spinlock for 
-// the duration of a C++ scope. 
-class ABSL_SCOPED_LOCKABLE SpinLockHolder { 
- public: 
-  inline explicit SpinLockHolder(SpinLock* l) ABSL_EXCLUSIVE_LOCK_FUNCTION(l) 
-      : lock_(l) { 
-    l->Lock(); 
-  } 
-  inline ~SpinLockHolder() ABSL_UNLOCK_FUNCTION() { lock_->Unlock(); } 
- 
-  SpinLockHolder(const SpinLockHolder&) = delete; 
-  SpinLockHolder& operator=(const SpinLockHolder&) = delete; 
- 
- private: 
-  SpinLock* lock_; 
-}; 
- 
-// Register a hook for profiling support. 
-// 
-// The function pointer registered here will be called whenever a spinlock is 
-// contended.  The callback is given an opaque handle to the contended spinlock 
-// and the number of wait cycles.  This is thread-safe, but only a single 
-// profiler can be registered.  It is an error to call this function multiple 
-// times with different arguments. 
-void RegisterSpinLockProfiler(void (*fn)(const void* lock, 
-                                         int64_t wait_cycles)); 
- 
-//------------------------------------------------------------------------------ 
-// Public interface ends here. 
-//------------------------------------------------------------------------------ 
- 
-// If (result & kSpinLockHeld) == 0, then *this was successfully locked. 
-// Otherwise, returns last observed value for lockword_. 
-inline uint32_t SpinLock::TryLockInternal(uint32_t lock_value, 
-                                          uint32_t wait_cycles) { 
-  if ((lock_value & kSpinLockHeld) != 0) { 
-    return lock_value; 
-  } 
- 
-  uint32_t sched_disabled_bit = 0; 
-  if ((lock_value & kSpinLockCooperative) == 0) { 
-    // For non-cooperative locks we must make sure we mark ourselves as 
-    // non-reschedulable before we attempt to CompareAndSwap. 
-    if (base_internal::SchedulingGuard::DisableRescheduling()) { 
-      sched_disabled_bit = kSpinLockDisabledScheduling; 
-    } 
-  } 
- 
-  if (!lockword_.compare_exchange_strong( 
-          lock_value, 
-          kSpinLockHeld | lock_value | wait_cycles | sched_disabled_bit, 
-          std::memory_order_acquire, std::memory_order_relaxed)) { 
-    base_internal::SchedulingGuard::EnableRescheduling(sched_disabled_bit != 0); 
-  } 
- 
-  return lock_value; 
-} 
- 
-}  // namespace base_internal 
+
+  // Returns true if the provided scheduling mode is cooperative.
+  static constexpr bool IsCooperative(
+      base_internal::SchedulingMode scheduling_mode) {
+    return scheduling_mode == base_internal::SCHEDULE_COOPERATIVE_AND_KERNEL;
+  }
+
+  uint32_t TryLockInternal(uint32_t lock_value, uint32_t wait_cycles);
+  void SlowLock() ABSL_ATTRIBUTE_COLD;
+  void SlowUnlock(uint32_t lock_value) ABSL_ATTRIBUTE_COLD;
+  uint32_t SpinLoop();
+
+  inline bool TryLockImpl() {
+    uint32_t lock_value = lockword_.load(std::memory_order_relaxed);
+    return (TryLockInternal(lock_value, 0) & kSpinLockHeld) == 0;
+  }
+
+  std::atomic<uint32_t> lockword_;
+
+  SpinLock(const SpinLock&) = delete;
+  SpinLock& operator=(const SpinLock&) = delete;
+};
+
+// Corresponding locker object that arranges to acquire a spinlock for
+// the duration of a C++ scope.
+class ABSL_SCOPED_LOCKABLE SpinLockHolder {
+ public:
+  inline explicit SpinLockHolder(SpinLock* l) ABSL_EXCLUSIVE_LOCK_FUNCTION(l)
+      : lock_(l) {
+    l->Lock();
+  }
+  inline ~SpinLockHolder() ABSL_UNLOCK_FUNCTION() { lock_->Unlock(); }
+
+  SpinLockHolder(const SpinLockHolder&) = delete;
+  SpinLockHolder& operator=(const SpinLockHolder&) = delete;
+
+ private:
+  SpinLock* lock_;
+};
+
+// Register a hook for profiling support.
+//
+// The function pointer registered here will be called whenever a spinlock is
+// contended.  The callback is given an opaque handle to the contended spinlock
+// and the number of wait cycles.  This is thread-safe, but only a single
+// profiler can be registered.  It is an error to call this function multiple
+// times with different arguments.
+void RegisterSpinLockProfiler(void (*fn)(const void* lock,
+                                         int64_t wait_cycles));
+
+//------------------------------------------------------------------------------
+// Public interface ends here.
+//------------------------------------------------------------------------------
+
+// If (result & kSpinLockHeld) == 0, then *this was successfully locked.
+// Otherwise, returns last observed value for lockword_.
+inline uint32_t SpinLock::TryLockInternal(uint32_t lock_value,
+                                          uint32_t wait_cycles) {
+  if ((lock_value & kSpinLockHeld) != 0) {
+    return lock_value;
+  }
+
+  uint32_t sched_disabled_bit = 0;
+  if ((lock_value & kSpinLockCooperative) == 0) {
+    // For non-cooperative locks we must make sure we mark ourselves as
+    // non-reschedulable before we attempt to CompareAndSwap.
+    if (base_internal::SchedulingGuard::DisableRescheduling()) {
+      sched_disabled_bit = kSpinLockDisabledScheduling;
+    }
+  }
+
+  if (!lockword_.compare_exchange_strong(
+          lock_value,
+          kSpinLockHeld | lock_value | wait_cycles | sched_disabled_bit,
+          std::memory_order_acquire, std::memory_order_relaxed)) {
+    base_internal::SchedulingGuard::EnableRescheduling(sched_disabled_bit != 0);
+  }
+
+  return lock_value;
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_SPINLOCK_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_SPINLOCK_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_akaros.inc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_akaros.inc
index cfd78c3207..69955dc765 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_akaros.inc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_akaros.inc
@@ -1,35 +1,35 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file is an Akaros-specific part of spinlock_wait.cc 
- 
-#include <atomic> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is an Akaros-specific part of spinlock_wait.cc
+
+#include <atomic>
+
 #include "y_absl/base/internal/scheduling_mode.h"
- 
-extern "C" { 
- 
+
+extern "C" {
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
-    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, 
+    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */,
     int /* loop */, y_absl::base_internal::SchedulingMode /* mode */) {
-  // In Akaros, one must take care not to call anything that could cause a 
-  // malloc(), a blocking system call, or a uthread_yield() while holding a 
-  // spinlock. Our callers assume will not call into libraries or other 
-  // arbitrary code. 
-} 
- 
+  // In Akaros, one must take care not to call anything that could cause a
+  // malloc(), a blocking system call, or a uthread_yield() while holding a
+  // spinlock. Our callers assume will not call into libraries or other
+  // arbitrary code.
+}
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(
-    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {} 
- 
-}  // extern "C" 
+    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
+
+}  // extern "C"
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_linux.inc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_linux.inc
index 597b48ae64..5b4480d133 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_linux.inc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_linux.inc
@@ -1,51 +1,51 @@
-// Copyright 2018 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file is a Linux-specific part of spinlock_wait.cc 
- 
-#include <linux/futex.h> 
-#include <sys/syscall.h> 
-#include <unistd.h> 
- 
-#include <atomic> 
-#include <climits> 
-#include <cstdint> 
-#include <ctime> 
- 
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Linux-specific part of spinlock_wait.cc
+
+#include <linux/futex.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#include <atomic>
+#include <climits>
+#include <cstdint>
+#include <ctime>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/internal/errno_saver.h"
- 
-// The SpinLock lockword is `std::atomic<uint32_t>`. Here we assert that 
-// `std::atomic<uint32_t>` is bitwise equivalent of the `int` expected 
-// by SYS_futex. We also assume that reads/writes done to the lockword 
-// by SYS_futex have rational semantics with regard to the 
-// std::atomic<> API. C++ provides no guarantees of these assumptions, 
-// but they are believed to hold in practice. 
-static_assert(sizeof(std::atomic<uint32_t>) == sizeof(int), 
-              "SpinLock lockword has the wrong size for a futex"); 
- 
-// Some Android headers are missing these definitions even though they 
-// support these futex operations. 
-#ifdef __BIONIC__ 
-#ifndef SYS_futex 
-#define SYS_futex __NR_futex 
-#endif 
-#ifndef FUTEX_PRIVATE_FLAG 
-#define FUTEX_PRIVATE_FLAG 128 
-#endif 
-#endif 
- 
+
+// The SpinLock lockword is `std::atomic<uint32_t>`. Here we assert that
+// `std::atomic<uint32_t>` is bitwise equivalent of the `int` expected
+// by SYS_futex. We also assume that reads/writes done to the lockword
+// by SYS_futex have rational semantics with regard to the
+// std::atomic<> API. C++ provides no guarantees of these assumptions,
+// but they are believed to hold in practice.
+static_assert(sizeof(std::atomic<uint32_t>) == sizeof(int),
+              "SpinLock lockword has the wrong size for a futex");
+
+// Some Android headers are missing these definitions even though they
+// support these futex operations.
+#ifdef __BIONIC__
+#ifndef SYS_futex
+#define SYS_futex __NR_futex
+#endif
+#ifndef FUTEX_PRIVATE_FLAG
+#define FUTEX_PRIVATE_FLAG 128
+#endif
+#endif
+
 #if defined(__NR_futex_time64) && !defined(SYS_futex_time64)
 #define SYS_futex_time64 __NR_futex_time64
 #endif
@@ -54,21 +54,21 @@ static_assert(sizeof(std::atomic<uint32_t>) == sizeof(int),
 #define SYS_futex SYS_futex_time64
 #endif
 
-extern "C" { 
- 
+extern "C" {
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
-    std::atomic<uint32_t> *w, uint32_t value, int loop, 
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
     y_absl::base_internal::SchedulingMode) {
   y_absl::base_internal::ErrnoSaver errno_saver;
-  struct timespec tm; 
-  tm.tv_sec = 0; 
+  struct timespec tm;
+  tm.tv_sec = 0;
   tm.tv_nsec = y_absl::base_internal::SpinLockSuggestedDelayNS(loop);
-  syscall(SYS_futex, w, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, value, &tm); 
-} 
- 
+  syscall(SYS_futex, w, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, value, &tm);
+}
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(
     std::atomic<uint32_t> *w, bool all) {
-  syscall(SYS_futex, w, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, all ? INT_MAX : 1, 0); 
-} 
- 
-}  // extern "C" 
+  syscall(SYS_futex, w, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, all ? INT_MAX : 1, 0);
+}
+
+}  // extern "C"
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_posix.inc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_posix.inc
index f07fcf5ca7..12a9b86599 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_posix.inc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_posix.inc
@@ -1,46 +1,46 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file is a Posix-specific part of spinlock_wait.cc 
- 
-#include <sched.h> 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Posix-specific part of spinlock_wait.cc
+
+#include <sched.h>
+
+#include <atomic>
+#include <ctime>
 
-#include <atomic> 
-#include <ctime> 
- 
 #include "y_absl/base/internal/errno_saver.h"
 #include "y_absl/base/internal/scheduling_mode.h"
 #include "y_absl/base/port.h"
- 
-extern "C" { 
- 
+
+extern "C" {
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
-    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop, 
+    std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop,
     y_absl::base_internal::SchedulingMode /* mode */) {
   y_absl::base_internal::ErrnoSaver errno_saver;
-  if (loop == 0) { 
-  } else if (loop == 1) { 
-    sched_yield(); 
-  } else { 
-    struct timespec tm; 
-    tm.tv_sec = 0; 
+  if (loop == 0) {
+  } else if (loop == 1) {
+    sched_yield();
+  } else {
+    struct timespec tm;
+    tm.tv_sec = 0;
     tm.tv_nsec = y_absl::base_internal::SpinLockSuggestedDelayNS(loop);
-    nanosleep(&tm, nullptr); 
-  } 
-} 
- 
+    nanosleep(&tm, nullptr);
+  }
+}
+
 ABSL_ATTRIBUTE_WEAK void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(
-    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {} 
- 
-}  // extern "C" 
+    std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
+
+}  // extern "C"
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc
index 2bbc76c86d..138cb3c5f0 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc
@@ -1,81 +1,81 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-// The OS-specific header included below must provide two calls: 
-// AbslInternalSpinLockDelay() and AbslInternalSpinLockWake(). 
-// See spinlock_wait.h for the specs. 
- 
-#include <atomic> 
-#include <cstdint> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// The OS-specific header included below must provide two calls:
+// AbslInternalSpinLockDelay() and AbslInternalSpinLockWake().
+// See spinlock_wait.h for the specs.
+
+#include <atomic>
+#include <cstdint>
+
 #include "y_absl/base/internal/spinlock_wait.h"
- 
-#if defined(_WIN32) 
+
+#if defined(_WIN32)
 #include "y_absl/base/internal/spinlock_win32.inc"
-#elif defined(__linux__) 
+#elif defined(__linux__)
 #include "y_absl/base/internal/spinlock_linux.inc"
-#elif defined(__akaros__) 
+#elif defined(__akaros__)
 #include "y_absl/base/internal/spinlock_akaros.inc"
-#else 
+#else
 #include "y_absl/base/internal/spinlock_posix.inc"
-#endif 
- 
+#endif
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// See spinlock_wait.h for spec. 
-uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n, 
-                      const SpinLockWaitTransition trans[], 
-                      base_internal::SchedulingMode scheduling_mode) { 
-  int loop = 0; 
-  for (;;) { 
-    uint32_t v = w->load(std::memory_order_acquire); 
-    int i; 
-    for (i = 0; i != n && v != trans[i].from; i++) { 
-    } 
-    if (i == n) { 
-      SpinLockDelay(w, v, ++loop, scheduling_mode);  // no matching transition 
-    } else if (trans[i].to == v ||                   // null transition 
-               w->compare_exchange_strong(v, trans[i].to, 
-                                          std::memory_order_acquire, 
-                                          std::memory_order_relaxed)) { 
-      if (trans[i].done) return v; 
-    } 
-  } 
-} 
- 
-static std::atomic<uint64_t> delay_rand; 
- 
-// Return a suggested delay in nanoseconds for iteration number "loop" 
-int SpinLockSuggestedDelayNS(int loop) { 
-  // Weak pseudo-random number generator to get some spread between threads 
-  // when many are spinning. 
-  uint64_t r = delay_rand.load(std::memory_order_relaxed); 
-  r = 0x5deece66dLL * r + 0xb;   // numbers from nrand48() 
-  delay_rand.store(r, std::memory_order_relaxed); 
- 
-  if (loop < 0 || loop > 32) {   // limit loop to 0..32 
-    loop = 32; 
-  } 
-  const int kMinDelay = 128 << 10;  // 128us 
-  // Double delay every 8 iterations, up to 16x (2ms). 
-  int delay = kMinDelay << (loop / 8); 
-  // Randomize in delay..2*delay range, for resulting 128us..4ms range. 
-  return delay | ((delay - 1) & static_cast<int>(r)); 
-} 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+// See spinlock_wait.h for spec.
+uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
+                      const SpinLockWaitTransition trans[],
+                      base_internal::SchedulingMode scheduling_mode) {
+  int loop = 0;
+  for (;;) {
+    uint32_t v = w->load(std::memory_order_acquire);
+    int i;
+    for (i = 0; i != n && v != trans[i].from; i++) {
+    }
+    if (i == n) {
+      SpinLockDelay(w, v, ++loop, scheduling_mode);  // no matching transition
+    } else if (trans[i].to == v ||                   // null transition
+               w->compare_exchange_strong(v, trans[i].to,
+                                          std::memory_order_acquire,
+                                          std::memory_order_relaxed)) {
+      if (trans[i].done) return v;
+    }
+  }
+}
+
+static std::atomic<uint64_t> delay_rand;
+
+// Return a suggested delay in nanoseconds for iteration number "loop"
+int SpinLockSuggestedDelayNS(int loop) {
+  // Weak pseudo-random number generator to get some spread between threads
+  // when many are spinning.
+  uint64_t r = delay_rand.load(std::memory_order_relaxed);
+  r = 0x5deece66dLL * r + 0xb;   // numbers from nrand48()
+  delay_rand.store(r, std::memory_order_relaxed);
+
+  if (loop < 0 || loop > 32) {   // limit loop to 0..32
+    loop = 32;
+  }
+  const int kMinDelay = 128 << 10;  // 128us
+  // Double delay every 8 iterations, up to 16x (2ms).
+  int delay = kMinDelay << (loop / 8);
+  // Randomize in delay..2*delay range, for resulting 128us..4ms range.
+  return delay | ((delay - 1) & static_cast<int>(r));
+}
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.h
index 3615b69feb..2e34d7026b 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.h
@@ -1,95 +1,95 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
-#ifndef ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_ 
-#define ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_ 
- 
-// Operations to make atomic transitions on a word, and to allow 
-// waiting for those transitions to become possible. 
- 
-#include <stdint.h> 
-#include <atomic> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
+#define ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
+
+// Operations to make atomic transitions on a word, and to allow
+// waiting for those transitions to become possible.
+
+#include <stdint.h>
+#include <atomic>
+
 #include "y_absl/base/internal/scheduling_mode.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// SpinLockWait() waits until it can perform one of several transitions from 
-// "from" to "to".  It returns when it performs a transition where done==true. 
-struct SpinLockWaitTransition { 
-  uint32_t from; 
-  uint32_t to; 
-  bool done; 
-}; 
- 
-// Wait until *w can transition from trans[i].from to trans[i].to for some i 
-// satisfying 0<=i<n && trans[i].done, atomically make the transition, 
-// then return the old value of *w.   Make any other atomic transitions 
-// where !trans[i].done, but continue waiting. 
+namespace base_internal {
+
+// SpinLockWait() waits until it can perform one of several transitions from
+// "from" to "to".  It returns when it performs a transition where done==true.
+struct SpinLockWaitTransition {
+  uint32_t from;
+  uint32_t to;
+  bool done;
+};
+
+// Wait until *w can transition from trans[i].from to trans[i].to for some i
+// satisfying 0<=i<n && trans[i].done, atomically make the transition,
+// then return the old value of *w.   Make any other atomic transitions
+// where !trans[i].done, but continue waiting.
 //
 // Wakeups for threads blocked on SpinLockWait do not respect priorities.
-uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n, 
-                      const SpinLockWaitTransition trans[], 
-                      SchedulingMode scheduling_mode); 
- 
+uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
+                      const SpinLockWaitTransition trans[],
+                      SchedulingMode scheduling_mode);
+
 // If possible, wake some thread that has called SpinLockDelay(w, ...). If `all`
 // is true, wake all such threads. On some systems, this may be a no-op; on
 // those systems, threads calling SpinLockDelay() will always wake eventually
 // even if SpinLockWake() is never called.
-void SpinLockWake(std::atomic<uint32_t> *w, bool all); 
- 
-// Wait for an appropriate spin delay on iteration "loop" of a 
-// spin loop on location *w, whose previously observed value was "value". 
-// SpinLockDelay() may do nothing, may yield the CPU, may sleep a clock tick, 
+void SpinLockWake(std::atomic<uint32_t> *w, bool all);
+
+// Wait for an appropriate spin delay on iteration "loop" of a
+// spin loop on location *w, whose previously observed value was "value".
+// SpinLockDelay() may do nothing, may yield the CPU, may sleep a clock tick,
 // or may wait for a call to SpinLockWake(w).
-void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop, 
-                   base_internal::SchedulingMode scheduling_mode); 
- 
-// Helper used by AbslInternalSpinLockDelay. 
-// Returns a suggested delay in nanoseconds for iteration number "loop". 
-int SpinLockSuggestedDelayNS(int loop); 
- 
-}  // namespace base_internal 
+void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
+                   base_internal::SchedulingMode scheduling_mode);
+
+// Helper used by AbslInternalSpinLockDelay.
+// Returns a suggested delay in nanoseconds for iteration number "loop".
+int SpinLockSuggestedDelayNS(int loop);
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-// In some build configurations we pass --detect-odr-violations to the 
-// gold linker.  This causes it to flag weak symbol overrides as ODR 
-// violations.  Because ODR only applies to C++ and not C, 
-// --detect-odr-violations ignores symbols not mangled with C++ names. 
-// By changing our extension points to be extern "C", we dodge this 
-// check. 
-extern "C" { 
+
+// In some build configurations we pass --detect-odr-violations to the
+// gold linker.  This causes it to flag weak symbol overrides as ODR
+// violations.  Because ODR only applies to C++ and not C,
+// --detect-odr-violations ignores symbols not mangled with C++ names.
+// By changing our extension points to be extern "C", we dodge this
+// check.
+extern "C" {
 void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(std::atomic<uint32_t> *w,
                                                       bool all);
 void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
-    std::atomic<uint32_t> *w, uint32_t value, int loop, 
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
     y_absl::base_internal::SchedulingMode scheduling_mode);
-} 
- 
+}
+
 inline void y_absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
-                                              bool all) { 
+                                              bool all) {
   ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(w, all);
-} 
- 
+}
+
 inline void y_absl::base_internal::SpinLockDelay(
-    std::atomic<uint32_t> *w, uint32_t value, int loop, 
+    std::atomic<uint32_t> *w, uint32_t value, int loop,
     y_absl::base_internal::SchedulingMode scheduling_mode) {
   ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)
   (w, value, loop, scheduling_mode);
-} 
- 
-#endif  // ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_ 
+}
+
+#endif  // ABSL_BASE_INTERNAL_SPINLOCK_WAIT_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/ya.make b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/ya.make
index 8181c61b35..902ffe394f 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/ya.make
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/ya.make
@@ -1,26 +1,26 @@
-# Generated by devtools/yamaker. 
- 
-LIBRARY() 
- 
+# Generated by devtools/yamaker.
+
+LIBRARY()
+
 WITHOUT_LICENSE_TEXTS()
- 
+
 OWNER(
     somov
     g:cpp-contrib
 )
 
-LICENSE(Apache-2.0) 
- 
+LICENSE(Apache-2.0)
+
 ADDINCL(
     GLOBAL contrib/restricted/abseil-cpp-tstring
 )
- 
-NO_COMPILER_WARNINGS() 
- 
+
+NO_COMPILER_WARNINGS()
+
 SRCDIR(contrib/restricted/abseil-cpp-tstring/y_absl/base/internal)
- 
-SRCS( 
-    spinlock_wait.cc 
-) 
- 
-END() 
+
+SRCS(
+    spinlock_wait.cc
+)
+
+END()
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_win32.inc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_win32.inc
index 69ddac9a64..648f74134f 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_win32.inc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_win32.inc
@@ -1,37 +1,37 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file is a Win32-specific part of spinlock_wait.cc 
- 
-#include <windows.h> 
-#include <atomic> 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a Win32-specific part of spinlock_wait.cc
+
+#include <windows.h>
+#include <atomic>
 #include "y_absl/base/internal/scheduling_mode.h"
- 
-extern "C" { 
- 
+
+extern "C" {
+
 void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockDelay)(
     std::atomic<uint32_t>* /* lock_word */, uint32_t /* value */, int loop,
     y_absl::base_internal::SchedulingMode /* mode */) {
-  if (loop == 0) { 
-  } else if (loop == 1) { 
-    Sleep(0); 
-  } else { 
+  if (loop == 0) {
+  } else if (loop == 1) {
+    Sleep(0);
+  } else {
     Sleep(y_absl::base_internal::SpinLockSuggestedDelayNS(loop) / 1000000);
-  } 
-} 
- 
+  }
+}
+
 void ABSL_INTERNAL_C_SYMBOL(AbslInternalSpinLockWake)(
     std::atomic<uint32_t>* /* lock_word */, bool /* all */) {}
- 
-}  // extern "C" 
+
+}  // extern "C"
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.cc
index 12ba99dc62..9eb0cf3f8c 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.cc
@@ -1,66 +1,66 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/sysinfo.h"
- 
+
 #include "y_absl/base/attributes.h"
- 
-#ifdef _WIN32 
-#include <windows.h> 
-#else 
-#include <fcntl.h> 
-#include <pthread.h> 
-#include <sys/stat.h> 
-#include <sys/types.h> 
-#include <unistd.h> 
-#endif 
- 
-#ifdef __linux__ 
-#include <sys/syscall.h> 
-#endif 
- 
-#if defined(__APPLE__) || defined(__FreeBSD__) 
-#include <sys/sysctl.h> 
-#endif 
- 
-#if defined(__myriad2__) 
-#error #include <rtems.h> 
-#endif 
- 
-#include <string.h> 
-
-#include <cassert> 
-#include <cstdint> 
-#include <cstdio> 
-#include <cstdlib> 
-#include <ctime> 
-#include <limits> 
-#include <thread>  // NOLINT(build/c++11) 
-#include <utility> 
-#include <vector> 
- 
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <fcntl.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#ifdef __linux__
+#include <sys/syscall.h>
+#endif
+
+#if defined(__APPLE__) || defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#endif
+
+#if defined(__myriad2__)
+#error #include <rtems.h>
+#endif
+
+#include <string.h>
+
+#include <cassert>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <ctime>
+#include <limits>
+#include <thread>  // NOLINT(build/c++11)
+#include <utility>
+#include <vector>
+
 #include "y_absl/base/call_once.h"
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/raw_logging.h"
 #include "y_absl/base/internal/spinlock.h"
 #include "y_absl/base/internal/unscaledcycleclock.h"
 #include "y_absl/base/thread_annotations.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
+namespace base_internal {
+
 namespace {
 
 #if defined(_WIN32)
@@ -125,25 +125,25 @@ int Win32NumCPUs() {
 }  // namespace
 
 
-static int GetNumCPUs() { 
-#if defined(__myriad2__) 
-  return 1; 
+static int GetNumCPUs() {
+#if defined(__myriad2__)
+  return 1;
 #elif defined(_WIN32)
   const unsigned hardware_concurrency = Win32NumCPUs();
   return hardware_concurrency ? hardware_concurrency : 1;
 #elif defined(_AIX)
   return sysconf(_SC_NPROCESSORS_ONLN);
-#else 
-  // Other possibilities: 
-  //  - Read /sys/devices/system/cpu/online and use cpumask_parse() 
-  //  - sysconf(_SC_NPROCESSORS_ONLN) 
-  return std::thread::hardware_concurrency(); 
-#endif 
-} 
- 
-#if defined(_WIN32) 
- 
-static double GetNominalCPUFrequency() { 
+#else
+  // Other possibilities:
+  //  - Read /sys/devices/system/cpu/online and use cpumask_parse()
+  //  - sysconf(_SC_NPROCESSORS_ONLN)
+  return std::thread::hardware_concurrency();
+#endif
+}
+
+#if defined(_WIN32)
+
+static double GetNominalCPUFrequency() {
 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && \
     !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
   // UWP apps don't have access to the registry and currently don't provide an
@@ -167,330 +167,330 @@ static double GetNominalCPUFrequency() {
         data_size == sizeof(data)) {
       return data * 1e6;  // Value is MHz.
     }
-  } 
-  return 1.0; 
+  }
+  return 1.0;
 #endif  // WINAPI_PARTITION_APP && !WINAPI_PARTITION_DESKTOP
-} 
- 
-#elif defined(CTL_HW) && defined(HW_CPU_FREQ) 
- 
-static double GetNominalCPUFrequency() { 
-  unsigned freq; 
-  size_t size = sizeof(freq); 
-  int mib[2] = {CTL_HW, HW_CPU_FREQ}; 
-  if (sysctl(mib, 2, &freq, &size, nullptr, 0) == 0) { 
-    return static_cast<double>(freq); 
-  } 
-  return 1.0; 
-} 
- 
-#else 
- 
-// Helper function for reading a long from a file. Returns true if successful 
-// and the memory location pointed to by value is set to the value read. 
-static bool ReadLongFromFile(const char *file, long *value) { 
-  bool ret = false; 
-  int fd = open(file, O_RDONLY); 
-  if (fd != -1) { 
-    char line[1024]; 
-    char *err; 
-    memset(line, '\0', sizeof(line)); 
-    int len = read(fd, line, sizeof(line) - 1); 
-    if (len <= 0) { 
-      ret = false; 
-    } else { 
-      const long temp_value = strtol(line, &err, 10); 
-      if (line[0] != '\0' && (*err == '\n' || *err == '\0')) { 
-        *value = temp_value; 
-        ret = true; 
-      } 
-    } 
-    close(fd); 
-  } 
-  return ret; 
-} 
- 
-#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY) 
- 
-// Reads a monotonic time source and returns a value in 
-// nanoseconds. The returned value uses an arbitrary epoch, not the 
-// Unix epoch. 
-static int64_t ReadMonotonicClockNanos() { 
-  struct timespec t; 
-#ifdef CLOCK_MONOTONIC_RAW 
-  int rc = clock_gettime(CLOCK_MONOTONIC_RAW, &t); 
-#else 
-  int rc = clock_gettime(CLOCK_MONOTONIC, &t); 
-#endif 
-  if (rc != 0) { 
-    perror("clock_gettime() failed"); 
-    abort(); 
-  } 
-  return int64_t{t.tv_sec} * 1000000000 + t.tv_nsec; 
-} 
- 
-class UnscaledCycleClockWrapperForInitializeFrequency { 
- public: 
-  static int64_t Now() { return base_internal::UnscaledCycleClock::Now(); } 
-}; 
- 
-struct TimeTscPair { 
-  int64_t time;  // From ReadMonotonicClockNanos(). 
-  int64_t tsc;   // From UnscaledCycleClock::Now(). 
-}; 
- 
-// Returns a pair of values (monotonic kernel time, TSC ticks) that 
-// approximately correspond to each other.  This is accomplished by 
-// doing several reads and picking the reading with the lowest 
-// latency.  This approach is used to minimize the probability that 
-// our thread was preempted between clock reads. 
-static TimeTscPair GetTimeTscPair() { 
-  int64_t best_latency = std::numeric_limits<int64_t>::max(); 
-  TimeTscPair best; 
-  for (int i = 0; i < 10; ++i) { 
-    int64_t t0 = ReadMonotonicClockNanos(); 
-    int64_t tsc = UnscaledCycleClockWrapperForInitializeFrequency::Now(); 
-    int64_t t1 = ReadMonotonicClockNanos(); 
-    int64_t latency = t1 - t0; 
-    if (latency < best_latency) { 
-      best_latency = latency; 
-      best.time = t0; 
-      best.tsc = tsc; 
-    } 
-  } 
-  return best; 
-} 
- 
-// Measures and returns the TSC frequency by taking a pair of 
-// measurements approximately `sleep_nanoseconds` apart. 
-static double MeasureTscFrequencyWithSleep(int sleep_nanoseconds) { 
-  auto t0 = GetTimeTscPair(); 
-  struct timespec ts; 
-  ts.tv_sec = 0; 
-  ts.tv_nsec = sleep_nanoseconds; 
-  while (nanosleep(&ts, &ts) != 0 && errno == EINTR) {} 
-  auto t1 = GetTimeTscPair(); 
-  double elapsed_ticks = t1.tsc - t0.tsc; 
-  double elapsed_time = (t1.time - t0.time) * 1e-9; 
-  return elapsed_ticks / elapsed_time; 
-} 
- 
-// Measures and returns the TSC frequency by calling 
-// MeasureTscFrequencyWithSleep(), doubling the sleep interval until the 
-// frequency measurement stabilizes. 
-static double MeasureTscFrequency() { 
-  double last_measurement = -1.0; 
-  int sleep_nanoseconds = 1000000;  // 1 millisecond. 
-  for (int i = 0; i < 8; ++i) { 
-    double measurement = MeasureTscFrequencyWithSleep(sleep_nanoseconds); 
-    if (measurement * 0.99 < last_measurement && 
-        last_measurement < measurement * 1.01) { 
-      // Use the current measurement if it is within 1% of the 
-      // previous measurement. 
-      return measurement; 
-    } 
-    last_measurement = measurement; 
-    sleep_nanoseconds *= 2; 
-  } 
-  return last_measurement; 
-} 
- 
-#endif  // ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY 
- 
-static double GetNominalCPUFrequency() { 
-  long freq = 0; 
- 
-  // Google's production kernel has a patch to export the TSC 
-  // frequency through sysfs. If the kernel is exporting the TSC 
-  // frequency use that. There are issues where cpuinfo_max_freq 
-  // cannot be relied on because the BIOS may be exporting an invalid 
-  // p-state (on x86) or p-states may be used to put the processor in 
-  // a new mode (turbo mode). Essentially, those frequencies cannot 
-  // always be relied upon. The same reasons apply to /proc/cpuinfo as 
-  // well. 
-  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)) { 
-    return freq * 1e3;  // Value is kHz. 
-  } 
- 
-#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY) 
-  // On these platforms, the TSC frequency is the nominal CPU 
-  // frequency.  But without having the kernel export it directly 
-  // though /sys/devices/system/cpu/cpu0/tsc_freq_khz, there is no 
-  // other way to reliably get the TSC frequency, so we have to 
-  // measure it ourselves.  Some CPUs abuse cpuinfo_max_freq by 
-  // exporting "fake" frequencies for implementing new features. For 
-  // example, Intel's turbo mode is enabled by exposing a p-state 
-  // value with a higher frequency than that of the real TSC 
-  // rate. Because of this, we prefer to measure the TSC rate 
-  // ourselves on i386 and x86-64. 
-  return MeasureTscFrequency(); 
-#else 
- 
-  // If CPU scaling is in effect, we want to use the *maximum* 
-  // frequency, not whatever CPU speed some random processor happens 
-  // to be using now. 
-  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq", 
-                       &freq)) { 
-    return freq * 1e3;  // Value is kHz. 
-  } 
- 
-  return 1.0; 
-#endif  // !ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY 
-} 
- 
-#endif 
- 
+}
+
+#elif defined(CTL_HW) && defined(HW_CPU_FREQ)
+
+static double GetNominalCPUFrequency() {
+  unsigned freq;
+  size_t size = sizeof(freq);
+  int mib[2] = {CTL_HW, HW_CPU_FREQ};
+  if (sysctl(mib, 2, &freq, &size, nullptr, 0) == 0) {
+    return static_cast<double>(freq);
+  }
+  return 1.0;
+}
+
+#else
+
+// Helper function for reading a long from a file. Returns true if successful
+// and the memory location pointed to by value is set to the value read.
+static bool ReadLongFromFile(const char *file, long *value) {
+  bool ret = false;
+  int fd = open(file, O_RDONLY);
+  if (fd != -1) {
+    char line[1024];
+    char *err;
+    memset(line, '\0', sizeof(line));
+    int len = read(fd, line, sizeof(line) - 1);
+    if (len <= 0) {
+      ret = false;
+    } else {
+      const long temp_value = strtol(line, &err, 10);
+      if (line[0] != '\0' && (*err == '\n' || *err == '\0')) {
+        *value = temp_value;
+        ret = true;
+      }
+    }
+    close(fd);
+  }
+  return ret;
+}
+
+#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY)
+
+// Reads a monotonic time source and returns a value in
+// nanoseconds. The returned value uses an arbitrary epoch, not the
+// Unix epoch.
+static int64_t ReadMonotonicClockNanos() {
+  struct timespec t;
+#ifdef CLOCK_MONOTONIC_RAW
+  int rc = clock_gettime(CLOCK_MONOTONIC_RAW, &t);
+#else
+  int rc = clock_gettime(CLOCK_MONOTONIC, &t);
+#endif
+  if (rc != 0) {
+    perror("clock_gettime() failed");
+    abort();
+  }
+  return int64_t{t.tv_sec} * 1000000000 + t.tv_nsec;
+}
+
+class UnscaledCycleClockWrapperForInitializeFrequency {
+ public:
+  static int64_t Now() { return base_internal::UnscaledCycleClock::Now(); }
+};
+
+struct TimeTscPair {
+  int64_t time;  // From ReadMonotonicClockNanos().
+  int64_t tsc;   // From UnscaledCycleClock::Now().
+};
+
+// Returns a pair of values (monotonic kernel time, TSC ticks) that
+// approximately correspond to each other.  This is accomplished by
+// doing several reads and picking the reading with the lowest
+// latency.  This approach is used to minimize the probability that
+// our thread was preempted between clock reads.
+static TimeTscPair GetTimeTscPair() {
+  int64_t best_latency = std::numeric_limits<int64_t>::max();
+  TimeTscPair best;
+  for (int i = 0; i < 10; ++i) {
+    int64_t t0 = ReadMonotonicClockNanos();
+    int64_t tsc = UnscaledCycleClockWrapperForInitializeFrequency::Now();
+    int64_t t1 = ReadMonotonicClockNanos();
+    int64_t latency = t1 - t0;
+    if (latency < best_latency) {
+      best_latency = latency;
+      best.time = t0;
+      best.tsc = tsc;
+    }
+  }
+  return best;
+}
+
+// Measures and returns the TSC frequency by taking a pair of
+// measurements approximately `sleep_nanoseconds` apart.
+static double MeasureTscFrequencyWithSleep(int sleep_nanoseconds) {
+  auto t0 = GetTimeTscPair();
+  struct timespec ts;
+  ts.tv_sec = 0;
+  ts.tv_nsec = sleep_nanoseconds;
+  while (nanosleep(&ts, &ts) != 0 && errno == EINTR) {}
+  auto t1 = GetTimeTscPair();
+  double elapsed_ticks = t1.tsc - t0.tsc;
+  double elapsed_time = (t1.time - t0.time) * 1e-9;
+  return elapsed_ticks / elapsed_time;
+}
+
+// Measures and returns the TSC frequency by calling
+// MeasureTscFrequencyWithSleep(), doubling the sleep interval until the
+// frequency measurement stabilizes.
+static double MeasureTscFrequency() {
+  double last_measurement = -1.0;
+  int sleep_nanoseconds = 1000000;  // 1 millisecond.
+  for (int i = 0; i < 8; ++i) {
+    double measurement = MeasureTscFrequencyWithSleep(sleep_nanoseconds);
+    if (measurement * 0.99 < last_measurement &&
+        last_measurement < measurement * 1.01) {
+      // Use the current measurement if it is within 1% of the
+      // previous measurement.
+      return measurement;
+    }
+    last_measurement = measurement;
+    sleep_nanoseconds *= 2;
+  }
+  return last_measurement;
+}
+
+#endif  // ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+
+static double GetNominalCPUFrequency() {
+  long freq = 0;
+
+  // Google's production kernel has a patch to export the TSC
+  // frequency through sysfs. If the kernel is exporting the TSC
+  // frequency use that. There are issues where cpuinfo_max_freq
+  // cannot be relied on because the BIOS may be exporting an invalid
+  // p-state (on x86) or p-states may be used to put the processor in
+  // a new mode (turbo mode). Essentially, those frequencies cannot
+  // always be relied upon. The same reasons apply to /proc/cpuinfo as
+  // well.
+  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/tsc_freq_khz", &freq)) {
+    return freq * 1e3;  // Value is kHz.
+  }
+
+#if defined(ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY)
+  // On these platforms, the TSC frequency is the nominal CPU
+  // frequency.  But without having the kernel export it directly
+  // though /sys/devices/system/cpu/cpu0/tsc_freq_khz, there is no
+  // other way to reliably get the TSC frequency, so we have to
+  // measure it ourselves.  Some CPUs abuse cpuinfo_max_freq by
+  // exporting "fake" frequencies for implementing new features. For
+  // example, Intel's turbo mode is enabled by exposing a p-state
+  // value with a higher frequency than that of the real TSC
+  // rate. Because of this, we prefer to measure the TSC rate
+  // ourselves on i386 and x86-64.
+  return MeasureTscFrequency();
+#else
+
+  // If CPU scaling is in effect, we want to use the *maximum*
+  // frequency, not whatever CPU speed some random processor happens
+  // to be using now.
+  if (ReadLongFromFile("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq",
+                       &freq)) {
+    return freq * 1e3;  // Value is kHz.
+  }
+
+  return 1.0;
+#endif  // !ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+}
+
+#endif
+
 ABSL_CONST_INIT static once_flag init_num_cpus_once;
 ABSL_CONST_INIT static int num_cpus = 0;
- 
+
 // NumCPUs() may be called before main() and before malloc is properly
 // initialized, therefore this must not allocate memory.
-int NumCPUs() { 
+int NumCPUs() {
   base_internal::LowLevelCallOnce(
       &init_num_cpus_once, []() { num_cpus = GetNumCPUs(); });
-  return num_cpus; 
-} 
- 
+  return num_cpus;
+}
+
 // A default frequency of 0.0 might be dangerous if it is used in division.
 ABSL_CONST_INIT static once_flag init_nominal_cpu_frequency_once;
 ABSL_CONST_INIT static double nominal_cpu_frequency = 1.0;
 
 // NominalCPUFrequency() may be called before main() and before malloc is
 // properly initialized, therefore this must not allocate memory.
-double NominalCPUFrequency() { 
+double NominalCPUFrequency() {
   base_internal::LowLevelCallOnce(
       &init_nominal_cpu_frequency_once,
       []() { nominal_cpu_frequency = GetNominalCPUFrequency(); });
-  return nominal_cpu_frequency; 
-} 
- 
-#if defined(_WIN32) 
- 
-pid_t GetTID() { 
+  return nominal_cpu_frequency;
+}
+
+#if defined(_WIN32)
+
+pid_t GetTID() {
   return pid_t{GetCurrentThreadId()};
-} 
- 
-#elif defined(__linux__) 
- 
-#ifndef SYS_gettid 
-#define SYS_gettid __NR_gettid 
-#endif 
- 
-pid_t GetTID() { 
-  return syscall(SYS_gettid); 
-} 
- 
-#elif defined(__akaros__) 
- 
-pid_t GetTID() { 
-  // Akaros has a concept of "vcore context", which is the state the program 
-  // is forced into when we need to make a user-level scheduling decision, or 
-  // run a signal handler.  This is analogous to the interrupt context that a 
-  // CPU might enter if it encounters some kind of exception. 
-  // 
-  // There is no current thread context in vcore context, but we need to give 
-  // a reasonable answer if asked for a thread ID (e.g., in a signal handler). 
-  // Thread 0 always exists, so if we are in vcore context, we return that. 
-  // 
-  // Otherwise, we know (since we are using pthreads) that the uthread struct 
-  // current_uthread is pointing to is the first element of a 
-  // struct pthread_tcb, so we extract and return the thread ID from that. 
-  // 
-  // TODO(dcross): Akaros anticipates moving the thread ID to the uthread 
-  // structure at some point. We should modify this code to remove the cast 
-  // when that happens. 
-  if (in_vcore_context()) 
-    return 0; 
-  return reinterpret_cast<struct pthread_tcb *>(current_uthread)->id; 
-} 
- 
-#elif defined(__myriad2__) 
- 
-pid_t GetTID() { 
-  uint32_t tid; 
-  rtems_task_ident(RTEMS_SELF, 0, &tid); 
-  return tid; 
-} 
- 
-#else 
- 
-// Fallback implementation of GetTID using pthread_getspecific. 
+}
+
+#elif defined(__linux__)
+
+#ifndef SYS_gettid
+#define SYS_gettid __NR_gettid
+#endif
+
+pid_t GetTID() {
+  return syscall(SYS_gettid);
+}
+
+#elif defined(__akaros__)
+
+pid_t GetTID() {
+  // Akaros has a concept of "vcore context", which is the state the program
+  // is forced into when we need to make a user-level scheduling decision, or
+  // run a signal handler.  This is analogous to the interrupt context that a
+  // CPU might enter if it encounters some kind of exception.
+  //
+  // There is no current thread context in vcore context, but we need to give
+  // a reasonable answer if asked for a thread ID (e.g., in a signal handler).
+  // Thread 0 always exists, so if we are in vcore context, we return that.
+  //
+  // Otherwise, we know (since we are using pthreads) that the uthread struct
+  // current_uthread is pointing to is the first element of a
+  // struct pthread_tcb, so we extract and return the thread ID from that.
+  //
+  // TODO(dcross): Akaros anticipates moving the thread ID to the uthread
+  // structure at some point. We should modify this code to remove the cast
+  // when that happens.
+  if (in_vcore_context())
+    return 0;
+  return reinterpret_cast<struct pthread_tcb *>(current_uthread)->id;
+}
+
+#elif defined(__myriad2__)
+
+pid_t GetTID() {
+  uint32_t tid;
+  rtems_task_ident(RTEMS_SELF, 0, &tid);
+  return tid;
+}
+
+#else
+
+// Fallback implementation of GetTID using pthread_getspecific.
 ABSL_CONST_INIT static once_flag tid_once;
 ABSL_CONST_INIT static pthread_key_t tid_key;
 ABSL_CONST_INIT static y_absl::base_internal::SpinLock tid_lock(
     y_absl::kConstInit, base_internal::SCHEDULE_KERNEL_ONLY);
- 
-// We set a bit per thread in this array to indicate that an ID is in 
-// use. ID 0 is unused because it is the default value returned by 
-// pthread_getspecific(). 
+
+// We set a bit per thread in this array to indicate that an ID is in
+// use. ID 0 is unused because it is the default value returned by
+// pthread_getspecific().
 ABSL_CONST_INIT static std::vector<uint32_t> *tid_array
     ABSL_GUARDED_BY(tid_lock) = nullptr;
-static constexpr int kBitsPerWord = 32;  // tid_array is uint32_t. 
- 
-// Returns the TID to tid_array. 
-static void FreeTID(void *v) { 
-  intptr_t tid = reinterpret_cast<intptr_t>(v); 
-  int word = tid / kBitsPerWord; 
-  uint32_t mask = ~(1u << (tid % kBitsPerWord)); 
+static constexpr int kBitsPerWord = 32;  // tid_array is uint32_t.
+
+// Returns the TID to tid_array.
+static void FreeTID(void *v) {
+  intptr_t tid = reinterpret_cast<intptr_t>(v);
+  int word = tid / kBitsPerWord;
+  uint32_t mask = ~(1u << (tid % kBitsPerWord));
   y_absl::base_internal::SpinLockHolder lock(&tid_lock);
-  assert(0 <= word && static_cast<size_t>(word) < tid_array->size()); 
-  (*tid_array)[word] &= mask; 
-} 
- 
-static void InitGetTID() { 
-  if (pthread_key_create(&tid_key, FreeTID) != 0) { 
-    // The logging system calls GetTID() so it can't be used here. 
-    perror("pthread_key_create failed"); 
-    abort(); 
-  } 
- 
-  // Initialize tid_array. 
+  assert(0 <= word && static_cast<size_t>(word) < tid_array->size());
+  (*tid_array)[word] &= mask;
+}
+
+static void InitGetTID() {
+  if (pthread_key_create(&tid_key, FreeTID) != 0) {
+    // The logging system calls GetTID() so it can't be used here.
+    perror("pthread_key_create failed");
+    abort();
+  }
+
+  // Initialize tid_array.
   y_absl::base_internal::SpinLockHolder lock(&tid_lock);
-  tid_array = new std::vector<uint32_t>(1); 
-  (*tid_array)[0] = 1;  // ID 0 is never-allocated. 
-} 
- 
-// Return a per-thread small integer ID from pthread's thread-specific data. 
-pid_t GetTID() { 
+  tid_array = new std::vector<uint32_t>(1);
+  (*tid_array)[0] = 1;  // ID 0 is never-allocated.
+}
+
+// Return a per-thread small integer ID from pthread's thread-specific data.
+pid_t GetTID() {
   y_absl::call_once(tid_once, InitGetTID);
- 
-  intptr_t tid = reinterpret_cast<intptr_t>(pthread_getspecific(tid_key)); 
-  if (tid != 0) { 
-    return tid; 
-  } 
- 
-  int bit;  // tid_array[word] = 1u << bit; 
-  size_t word; 
-  { 
-    // Search for the first unused ID. 
+
+  intptr_t tid = reinterpret_cast<intptr_t>(pthread_getspecific(tid_key));
+  if (tid != 0) {
+    return tid;
+  }
+
+  int bit;  // tid_array[word] = 1u << bit;
+  size_t word;
+  {
+    // Search for the first unused ID.
     y_absl::base_internal::SpinLockHolder lock(&tid_lock);
-    // First search for a word in the array that is not all ones. 
-    word = 0; 
-    while (word < tid_array->size() && ~(*tid_array)[word] == 0) { 
-      ++word; 
-    } 
-    if (word == tid_array->size()) { 
-      tid_array->push_back(0);  // No space left, add kBitsPerWord more IDs. 
-    } 
-    // Search for a zero bit in the word. 
-    bit = 0; 
-    while (bit < kBitsPerWord && (((*tid_array)[word] >> bit) & 1) != 0) { 
-      ++bit; 
-    } 
-    tid = (word * kBitsPerWord) + bit; 
-    (*tid_array)[word] |= 1u << bit;  // Mark the TID as allocated. 
-  } 
- 
-  if (pthread_setspecific(tid_key, reinterpret_cast<void *>(tid)) != 0) { 
-    perror("pthread_setspecific failed"); 
-    abort(); 
-  } 
- 
-  return static_cast<pid_t>(tid); 
-} 
- 
-#endif 
- 
+    // First search for a word in the array that is not all ones.
+    word = 0;
+    while (word < tid_array->size() && ~(*tid_array)[word] == 0) {
+      ++word;
+    }
+    if (word == tid_array->size()) {
+      tid_array->push_back(0);  // No space left, add kBitsPerWord more IDs.
+    }
+    // Search for a zero bit in the word.
+    bit = 0;
+    while (bit < kBitsPerWord && (((*tid_array)[word] >> bit) & 1) != 0) {
+      ++bit;
+    }
+    tid = (word * kBitsPerWord) + bit;
+    (*tid_array)[word] |= 1u << bit;  // Mark the TID as allocated.
+  }
+
+  if (pthread_setspecific(tid_key, reinterpret_cast<void *>(tid)) != 0) {
+    perror("pthread_setspecific failed");
+    abort();
+  }
+
+  return static_cast<pid_t>(tid);
+}
+
+#endif
+
 // GetCachedTID() caches the thread ID in thread-local storage (which is a
 // userspace construct) to avoid unnecessary system calls. Without this caching,
 // it can take roughly 98ns, while it takes roughly 1ns with this caching.
@@ -503,6 +503,6 @@ pid_t GetCachedTID() {
 #endif  // ABSL_HAVE_THREAD_LOCAL
 }
 
-}  // namespace base_internal 
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.h
index 6539aaf402..0fd7207a38 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.h
@@ -1,65 +1,65 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file includes routines to find out characteristics 
-// of the machine a program is running on.  It is undoubtedly 
-// system-dependent. 
- 
-// Functions listed here that accept a pid_t as an argument act on the 
-// current process if the pid_t argument is 0 
-// All functions here are thread-hostile due to file caching unless 
-// commented otherwise. 
- 
-#ifndef ABSL_BASE_INTERNAL_SYSINFO_H_ 
-#define ABSL_BASE_INTERNAL_SYSINFO_H_ 
- 
-#ifndef _WIN32 
-#include <sys/types.h> 
-#endif 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file includes routines to find out characteristics
+// of the machine a program is running on.  It is undoubtedly
+// system-dependent.
+
+// Functions listed here that accept a pid_t as an argument act on the
+// current process if the pid_t argument is 0
+// All functions here are thread-hostile due to file caching unless
+// commented otherwise.
+
+#ifndef ABSL_BASE_INTERNAL_SYSINFO_H_
+#define ABSL_BASE_INTERNAL_SYSINFO_H_
+
+#ifndef _WIN32
+#include <sys/types.h>
+#endif
+
 #include <cstdint>
 
 #include "y_absl/base/config.h"
 #include "y_absl/base/port.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// Nominal core processor cycles per second of each processor.   This is _not_ 
-// necessarily the frequency of the CycleClock counter (see cycleclock.h) 
-// Thread-safe. 
-double NominalCPUFrequency(); 
- 
-// Number of logical processors (hyperthreads) in system. Thread-safe. 
-int NumCPUs(); 
- 
-// Return the thread id of the current thread, as told by the system. 
-// No two currently-live threads implemented by the OS shall have the same ID. 
-// Thread ids of exited threads may be reused.   Multiple user-level threads 
-// may have the same thread ID if multiplexed on the same OS thread. 
-// 
-// On Linux, you may send a signal to the resulting ID with kill().  However, 
-// it is recommended for portability that you use pthread_kill() instead. 
-#ifdef _WIN32 
+namespace base_internal {
+
+// Nominal core processor cycles per second of each processor.   This is _not_
+// necessarily the frequency of the CycleClock counter (see cycleclock.h)
+// Thread-safe.
+double NominalCPUFrequency();
+
+// Number of logical processors (hyperthreads) in system. Thread-safe.
+int NumCPUs();
+
+// Return the thread id of the current thread, as told by the system.
+// No two currently-live threads implemented by the OS shall have the same ID.
+// Thread ids of exited threads may be reused.   Multiple user-level threads
+// may have the same thread ID if multiplexed on the same OS thread.
+//
+// On Linux, you may send a signal to the resulting ID with kill().  However,
+// it is recommended for portability that you use pthread_kill() instead.
+#ifdef _WIN32
 // On Windows, process id and thread id are of the same type according to the
 // return types of GetProcessId() and GetThreadId() are both DWORD, an unsigned
 // 32-bit type.
 using pid_t = uint32_t;
-#endif 
-pid_t GetTID(); 
- 
+#endif
+pid_t GetTID();
+
 // Like GetTID(), but caches the result in thread-local storage in order
 // to avoid unnecessary system calls. Note that there are some cases where
 // one must call through to GetTID directly, which is why this exists as a
@@ -67,8 +67,8 @@ pid_t GetTID();
 // an asynchronous signal-handling context nor right after a call to fork().
 pid_t GetCachedTID();
 
-}  // namespace base_internal 
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_SYSINFO_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_SYSINFO_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_annotations.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_annotations.h
index 3186736fb0..b4b01a8fb4 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_annotations.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_annotations.h
@@ -1,271 +1,271 @@
-// Copyright 2019 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// ----------------------------------------------------------------------------- 
-// File: thread_annotations.h 
-// ----------------------------------------------------------------------------- 
-// 
-// WARNING: This is a backwards compatible header and it will be removed after 
-// the migration to prefixed thread annotations is finished; please include 
+// Copyright 2019 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// -----------------------------------------------------------------------------
+// File: thread_annotations.h
+// -----------------------------------------------------------------------------
+//
+// WARNING: This is a backwards compatible header and it will be removed after
+// the migration to prefixed thread annotations is finished; please include
 // "y_absl/base/thread_annotations.h".
-// 
-// This header file contains macro definitions for thread safety annotations 
-// that allow developers to document the locking policies of multi-threaded 
-// code. The annotations can also help program analysis tools to identify 
-// potential thread safety issues. 
-// 
-// These annotations are implemented using compiler attributes. Using the macros 
-// defined here instead of raw attributes allow for portability and future 
-// compatibility. 
-// 
-// When referring to mutexes in the arguments of the attributes, you should 
-// use variable names or more complex expressions (e.g. my_object->mutex_) 
-// that evaluate to a concrete mutex object whenever possible. If the mutex 
-// you want to refer to is not in scope, you may use a member pointer 
-// (e.g. &MyClass::mutex_) to refer to a mutex in some (unknown) object. 
- 
-#ifndef ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_ 
-#define ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_ 
- 
-#if defined(__clang__) 
-#define THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x)) 
-#else 
-#define THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op 
-#endif 
- 
-// GUARDED_BY() 
-// 
-// Documents if a shared field or global variable needs to be protected by a 
-// mutex. GUARDED_BY() allows the user to specify a particular mutex that 
-// should be held when accessing the annotated variable. 
-// 
-// Although this annotation (and PT_GUARDED_BY, below) cannot be applied to 
-// local variables, a local variable and its associated mutex can often be 
-// combined into a small class or struct, thereby allowing the annotation. 
-// 
-// Example: 
-// 
-//   class Foo { 
-//     Mutex mu_; 
-//     int p1_ GUARDED_BY(mu_); 
-//     ... 
-//   }; 
-#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x)) 
- 
-// PT_GUARDED_BY() 
-// 
-// Documents if the memory location pointed to by a pointer should be guarded 
-// by a mutex when dereferencing the pointer. 
-// 
-// Example: 
-//   class Foo { 
-//     Mutex mu_; 
-//     int *p1_ PT_GUARDED_BY(mu_); 
-//     ... 
-//   }; 
-// 
-// Note that a pointer variable to a shared memory location could itself be a 
-// shared variable. 
-// 
-// Example: 
-// 
-//   // `q_`, guarded by `mu1_`, points to a shared memory location that is 
-//   // guarded by `mu2_`: 
-//   int *q_ GUARDED_BY(mu1_) PT_GUARDED_BY(mu2_); 
-#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x)) 
- 
-// ACQUIRED_AFTER() / ACQUIRED_BEFORE() 
-// 
-// Documents the acquisition order between locks that can be held 
-// simultaneously by a thread. For any two locks that need to be annotated 
-// to establish an acquisition order, only one of them needs the annotation. 
-// (i.e. You don't have to annotate both locks with both ACQUIRED_AFTER 
-// and ACQUIRED_BEFORE.) 
-// 
-// As with GUARDED_BY, this is only applicable to mutexes that are shared 
-// fields or global variables. 
-// 
-// Example: 
-// 
-//   Mutex m1_; 
-//   Mutex m2_ ACQUIRED_AFTER(m1_); 
-#define ACQUIRED_AFTER(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__)) 
- 
-#define ACQUIRED_BEFORE(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__)) 
- 
-// EXCLUSIVE_LOCKS_REQUIRED() / SHARED_LOCKS_REQUIRED() 
-// 
-// Documents a function that expects a mutex to be held prior to entry. 
-// The mutex is expected to be held both on entry to, and exit from, the 
-// function. 
-// 
-// An exclusive lock allows read-write access to the guarded data member(s), and 
-// only one thread can acquire a lock exclusively at any one time. A shared lock 
-// allows read-only access, and any number of threads can acquire a shared lock 
-// concurrently. 
-// 
-// Generally, non-const methods should be annotated with 
-// EXCLUSIVE_LOCKS_REQUIRED, while const methods should be annotated with 
-// SHARED_LOCKS_REQUIRED. 
-// 
-// Example: 
-// 
-//   Mutex mu1, mu2; 
-//   int a GUARDED_BY(mu1); 
-//   int b GUARDED_BY(mu2); 
-// 
-//   void foo() EXCLUSIVE_LOCKS_REQUIRED(mu1, mu2) { ... } 
-//   void bar() const SHARED_LOCKS_REQUIRED(mu1, mu2) { ... } 
-#define EXCLUSIVE_LOCKS_REQUIRED(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__)) 
- 
-#define SHARED_LOCKS_REQUIRED(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__)) 
- 
-// LOCKS_EXCLUDED() 
-// 
-// Documents the locks acquired in the body of the function. These locks 
-// cannot be held when calling this function (as Abseil's `Mutex` locks are 
-// non-reentrant). 
-#define LOCKS_EXCLUDED(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__)) 
- 
-// LOCK_RETURNED() 
-// 
-// Documents a function that returns a mutex without acquiring it.  For example, 
-// a public getter method that returns a pointer to a private mutex should 
-// be annotated with LOCK_RETURNED. 
-#define LOCK_RETURNED(x) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x)) 
- 
-// LOCKABLE 
-// 
-// Documents if a class/type is a lockable type (such as the `Mutex` class). 
-#define LOCKABLE \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(lockable) 
- 
-// SCOPED_LOCKABLE 
-// 
-// Documents if a class does RAII locking (such as the `MutexLock` class). 
-// The constructor should use `LOCK_FUNCTION()` to specify the mutex that is 
-// acquired, and the destructor should use `UNLOCK_FUNCTION()` with no 
-// arguments; the analysis will assume that the destructor unlocks whatever the 
-// constructor locked. 
-#define SCOPED_LOCKABLE \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable) 
- 
-// EXCLUSIVE_LOCK_FUNCTION() 
-// 
-// Documents functions that acquire a lock in the body of a function, and do 
-// not release it. 
-#define EXCLUSIVE_LOCK_FUNCTION(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__)) 
- 
-// SHARED_LOCK_FUNCTION() 
-// 
-// Documents functions that acquire a shared (reader) lock in the body of a 
-// function, and do not release it. 
-#define SHARED_LOCK_FUNCTION(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__)) 
- 
-// UNLOCK_FUNCTION() 
-// 
-// Documents functions that expect a lock to be held on entry to the function, 
-// and release it in the body of the function. 
-#define UNLOCK_FUNCTION(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__)) 
- 
-// EXCLUSIVE_TRYLOCK_FUNCTION() / SHARED_TRYLOCK_FUNCTION() 
-// 
-// Documents functions that try to acquire a lock, and return success or failure 
-// (or a non-boolean value that can be interpreted as a boolean). 
-// The first argument should be `true` for functions that return `true` on 
-// success, or `false` for functions that return `false` on success. The second 
-// argument specifies the mutex that is locked on success. If unspecified, this 
-// mutex is assumed to be `this`. 
-#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__)) 
- 
-#define SHARED_TRYLOCK_FUNCTION(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__)) 
- 
-// ASSERT_EXCLUSIVE_LOCK() / ASSERT_SHARED_LOCK() 
-// 
-// Documents functions that dynamically check to see if a lock is held, and fail 
-// if it is not held. 
-#define ASSERT_EXCLUSIVE_LOCK(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__)) 
- 
-#define ASSERT_SHARED_LOCK(...) \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__)) 
- 
-// NO_THREAD_SAFETY_ANALYSIS 
-// 
-// Turns off thread safety checking within the body of a particular function. 
-// This annotation is used to mark functions that are known to be correct, but 
-// the locking behavior is more complicated than the analyzer can handle. 
-#define NO_THREAD_SAFETY_ANALYSIS \ 
-  THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis) 
- 
-//------------------------------------------------------------------------------ 
-// Tool-Supplied Annotations 
-//------------------------------------------------------------------------------ 
- 
-// TS_UNCHECKED should be placed around lock expressions that are not valid 
-// C++ syntax, but which are present for documentation purposes.  These 
-// annotations will be ignored by the analysis. 
-#define TS_UNCHECKED(x) "" 
- 
-// TS_FIXME is used to mark lock expressions that are not valid C++ syntax. 
-// It is used by automated tools to mark and disable invalid expressions. 
-// The annotation should either be fixed, or changed to TS_UNCHECKED. 
-#define TS_FIXME(x) "" 
- 
-// Like NO_THREAD_SAFETY_ANALYSIS, this turns off checking within the body of 
-// a particular function.  However, this attribute is used to mark functions 
-// that are incorrect and need to be fixed.  It is used by automated tools to 
-// avoid breaking the build when the analysis is updated. 
-// Code owners are expected to eventually fix the routine. 
-#define NO_THREAD_SAFETY_ANALYSIS_FIXME  NO_THREAD_SAFETY_ANALYSIS 
- 
-// Similar to NO_THREAD_SAFETY_ANALYSIS_FIXME, this macro marks a GUARDED_BY 
-// annotation that needs to be fixed, because it is producing thread safety 
-// warning.  It disables the GUARDED_BY. 
-#define GUARDED_BY_FIXME(x) 
- 
-// Disables warnings for a single read operation.  This can be used to avoid 
-// warnings when it is known that the read is not actually involved in a race, 
-// but the compiler cannot confirm that. 
-#define TS_UNCHECKED_READ(x) thread_safety_analysis::ts_unchecked_read(x) 
- 
- 
-namespace thread_safety_analysis { 
- 
-// Takes a reference to a guarded data member, and returns an unguarded 
-// reference. 
-template <typename T> 
-inline const T& ts_unchecked_read(const T& v) NO_THREAD_SAFETY_ANALYSIS { 
-  return v; 
-} 
- 
-template <typename T> 
-inline T& ts_unchecked_read(T& v) NO_THREAD_SAFETY_ANALYSIS { 
-  return v; 
-} 
- 
-}  // namespace thread_safety_analysis 
- 
-#endif  // ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_ 
+//
+// This header file contains macro definitions for thread safety annotations
+// that allow developers to document the locking policies of multi-threaded
+// code. The annotations can also help program analysis tools to identify
+// potential thread safety issues.
+//
+// These annotations are implemented using compiler attributes. Using the macros
+// defined here instead of raw attributes allow for portability and future
+// compatibility.
+//
+// When referring to mutexes in the arguments of the attributes, you should
+// use variable names or more complex expressions (e.g. my_object->mutex_)
+// that evaluate to a concrete mutex object whenever possible. If the mutex
+// you want to refer to is not in scope, you may use a member pointer
+// (e.g. &MyClass::mutex_) to refer to a mutex in some (unknown) object.
+
+#ifndef ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
+#define ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
+
+#if defined(__clang__)
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x))
+#else
+#define THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op
+#endif
+
+// GUARDED_BY()
+//
+// Documents if a shared field or global variable needs to be protected by a
+// mutex. GUARDED_BY() allows the user to specify a particular mutex that
+// should be held when accessing the annotated variable.
+//
+// Although this annotation (and PT_GUARDED_BY, below) cannot be applied to
+// local variables, a local variable and its associated mutex can often be
+// combined into a small class or struct, thereby allowing the annotation.
+//
+// Example:
+//
+//   class Foo {
+//     Mutex mu_;
+//     int p1_ GUARDED_BY(mu_);
+//     ...
+//   };
+#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+// PT_GUARDED_BY()
+//
+// Documents if the memory location pointed to by a pointer should be guarded
+// by a mutex when dereferencing the pointer.
+//
+// Example:
+//   class Foo {
+//     Mutex mu_;
+//     int *p1_ PT_GUARDED_BY(mu_);
+//     ...
+//   };
+//
+// Note that a pointer variable to a shared memory location could itself be a
+// shared variable.
+//
+// Example:
+//
+//   // `q_`, guarded by `mu1_`, points to a shared memory location that is
+//   // guarded by `mu2_`:
+//   int *q_ GUARDED_BY(mu1_) PT_GUARDED_BY(mu2_);
+#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+
+// ACQUIRED_AFTER() / ACQUIRED_BEFORE()
+//
+// Documents the acquisition order between locks that can be held
+// simultaneously by a thread. For any two locks that need to be annotated
+// to establish an acquisition order, only one of them needs the annotation.
+// (i.e. You don't have to annotate both locks with both ACQUIRED_AFTER
+// and ACQUIRED_BEFORE.)
+//
+// As with GUARDED_BY, this is only applicable to mutexes that are shared
+// fields or global variables.
+//
+// Example:
+//
+//   Mutex m1_;
+//   Mutex m2_ ACQUIRED_AFTER(m1_);
+#define ACQUIRED_AFTER(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+
+#define ACQUIRED_BEFORE(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+
+// EXCLUSIVE_LOCKS_REQUIRED() / SHARED_LOCKS_REQUIRED()
+//
+// Documents a function that expects a mutex to be held prior to entry.
+// The mutex is expected to be held both on entry to, and exit from, the
+// function.
+//
+// An exclusive lock allows read-write access to the guarded data member(s), and
+// only one thread can acquire a lock exclusively at any one time. A shared lock
+// allows read-only access, and any number of threads can acquire a shared lock
+// concurrently.
+//
+// Generally, non-const methods should be annotated with
+// EXCLUSIVE_LOCKS_REQUIRED, while const methods should be annotated with
+// SHARED_LOCKS_REQUIRED.
+//
+// Example:
+//
+//   Mutex mu1, mu2;
+//   int a GUARDED_BY(mu1);
+//   int b GUARDED_BY(mu2);
+//
+//   void foo() EXCLUSIVE_LOCKS_REQUIRED(mu1, mu2) { ... }
+//   void bar() const SHARED_LOCKS_REQUIRED(mu1, mu2) { ... }
+#define EXCLUSIVE_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+
+#define SHARED_LOCKS_REQUIRED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+
+// LOCKS_EXCLUDED()
+//
+// Documents the locks acquired in the body of the function. These locks
+// cannot be held when calling this function (as Abseil's `Mutex` locks are
+// non-reentrant).
+#define LOCKS_EXCLUDED(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+// LOCK_RETURNED()
+//
+// Documents a function that returns a mutex without acquiring it.  For example,
+// a public getter method that returns a pointer to a private mutex should
+// be annotated with LOCK_RETURNED.
+#define LOCK_RETURNED(x) \
+  THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+// LOCKABLE
+//
+// Documents if a class/type is a lockable type (such as the `Mutex` class).
+#define LOCKABLE \
+  THREAD_ANNOTATION_ATTRIBUTE__(lockable)
+
+// SCOPED_LOCKABLE
+//
+// Documents if a class does RAII locking (such as the `MutexLock` class).
+// The constructor should use `LOCK_FUNCTION()` to specify the mutex that is
+// acquired, and the destructor should use `UNLOCK_FUNCTION()` with no
+// arguments; the analysis will assume that the destructor unlocks whatever the
+// constructor locked.
+#define SCOPED_LOCKABLE \
+  THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+// EXCLUSIVE_LOCK_FUNCTION()
+//
+// Documents functions that acquire a lock in the body of a function, and do
+// not release it.
+#define EXCLUSIVE_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+
+// SHARED_LOCK_FUNCTION()
+//
+// Documents functions that acquire a shared (reader) lock in the body of a
+// function, and do not release it.
+#define SHARED_LOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+
+// UNLOCK_FUNCTION()
+//
+// Documents functions that expect a lock to be held on entry to the function,
+// and release it in the body of the function.
+#define UNLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+
+// EXCLUSIVE_TRYLOCK_FUNCTION() / SHARED_TRYLOCK_FUNCTION()
+//
+// Documents functions that try to acquire a lock, and return success or failure
+// (or a non-boolean value that can be interpreted as a boolean).
+// The first argument should be `true` for functions that return `true` on
+// success, or `false` for functions that return `false` on success. The second
+// argument specifies the mutex that is locked on success. If unspecified, this
+// mutex is assumed to be `this`.
+#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+
+#define SHARED_TRYLOCK_FUNCTION(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+
+// ASSERT_EXCLUSIVE_LOCK() / ASSERT_SHARED_LOCK()
+//
+// Documents functions that dynamically check to see if a lock is held, and fail
+// if it is not held.
+#define ASSERT_EXCLUSIVE_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
+
+#define ASSERT_SHARED_LOCK(...) \
+  THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
+
+// NO_THREAD_SAFETY_ANALYSIS
+//
+// Turns off thread safety checking within the body of a particular function.
+// This annotation is used to mark functions that are known to be correct, but
+// the locking behavior is more complicated than the analyzer can handle.
+#define NO_THREAD_SAFETY_ANALYSIS \
+  THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+//------------------------------------------------------------------------------
+// Tool-Supplied Annotations
+//------------------------------------------------------------------------------
+
+// TS_UNCHECKED should be placed around lock expressions that are not valid
+// C++ syntax, but which are present for documentation purposes.  These
+// annotations will be ignored by the analysis.
+#define TS_UNCHECKED(x) ""
+
+// TS_FIXME is used to mark lock expressions that are not valid C++ syntax.
+// It is used by automated tools to mark and disable invalid expressions.
+// The annotation should either be fixed, or changed to TS_UNCHECKED.
+#define TS_FIXME(x) ""
+
+// Like NO_THREAD_SAFETY_ANALYSIS, this turns off checking within the body of
+// a particular function.  However, this attribute is used to mark functions
+// that are incorrect and need to be fixed.  It is used by automated tools to
+// avoid breaking the build when the analysis is updated.
+// Code owners are expected to eventually fix the routine.
+#define NO_THREAD_SAFETY_ANALYSIS_FIXME  NO_THREAD_SAFETY_ANALYSIS
+
+// Similar to NO_THREAD_SAFETY_ANALYSIS_FIXME, this macro marks a GUARDED_BY
+// annotation that needs to be fixed, because it is producing thread safety
+// warning.  It disables the GUARDED_BY.
+#define GUARDED_BY_FIXME(x)
+
+// Disables warnings for a single read operation.  This can be used to avoid
+// warnings when it is known that the read is not actually involved in a race,
+// but the compiler cannot confirm that.
+#define TS_UNCHECKED_READ(x) thread_safety_analysis::ts_unchecked_read(x)
+
+
+namespace thread_safety_analysis {
+
+// Takes a reference to a guarded data member, and returns an unguarded
+// reference.
+template <typename T>
+inline const T& ts_unchecked_read(const T& v) NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+template <typename T>
+inline T& ts_unchecked_read(T& v) NO_THREAD_SAFETY_ANALYSIS {
+  return v;
+}
+
+}  // namespace thread_safety_analysis
+
+#endif  // ABSL_BASE_INTERNAL_THREAD_ANNOTATIONS_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.cc
index bbbeb133cb..b5e88ae302 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.cc
@@ -1,63 +1,63 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/thread_identity.h"
- 
-#ifndef _WIN32 
-#include <pthread.h> 
-#include <signal.h> 
-#endif 
- 
-#include <atomic> 
-#include <cassert> 
-#include <memory> 
- 
+
+#ifndef _WIN32
+#include <pthread.h>
+#include <signal.h>
+#endif
+
+#include <atomic>
+#include <cassert>
+#include <memory>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/call_once.h"
 #include "y_absl/base/internal/raw_logging.h"
 #include "y_absl/base/internal/spinlock.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-#if ABSL_THREAD_IDENTITY_MODE != ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
-namespace { 
-// Used to co-ordinate one-time creation of our pthread_key 
+namespace base_internal {
+
+#if ABSL_THREAD_IDENTITY_MODE != ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+namespace {
+// Used to co-ordinate one-time creation of our pthread_key
 y_absl::once_flag init_thread_identity_key_once;
-pthread_key_t thread_identity_pthread_key; 
-std::atomic<bool> pthread_key_initialized(false); 
- 
-void AllocateThreadIdentityKey(ThreadIdentityReclaimerFunction reclaimer) { 
-  pthread_key_create(&thread_identity_pthread_key, reclaimer); 
-  pthread_key_initialized.store(true, std::memory_order_release); 
-} 
-}  // namespace 
-#endif 
- 
-#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \ 
-    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
-// The actual TLS storage for a thread's currently associated ThreadIdentity. 
-// This is referenced by inline accessors in the header. 
-// "protected" visibility ensures that if multiple instances of Abseil code 
-// exist within a process (via dlopen() or similar), references to 
-// thread_identity_ptr from each instance of the code will refer to 
-// *different* instances of this ptr. 
+pthread_key_t thread_identity_pthread_key;
+std::atomic<bool> pthread_key_initialized(false);
+
+void AllocateThreadIdentityKey(ThreadIdentityReclaimerFunction reclaimer) {
+  pthread_key_create(&thread_identity_pthread_key, reclaimer);
+  pthread_key_initialized.store(true, std::memory_order_release);
+}
+}  // namespace
+#endif
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+// The actual TLS storage for a thread's currently associated ThreadIdentity.
+// This is referenced by inline accessors in the header.
+// "protected" visibility ensures that if multiple instances of Abseil code
+// exist within a process (via dlopen() or similar), references to
+// thread_identity_ptr from each instance of the code will refer to
+// *different* instances of this ptr.
 // Apple platforms have the visibility attribute, but issue a compile warning
 // that protected visibility is unsupported.
 #if ABSL_HAVE_ATTRIBUTE(visibility) && !defined(__APPLE__)
-__attribute__((visibility("protected"))) 
+__attribute__((visibility("protected")))
 #endif  // ABSL_HAVE_ATTRIBUTE(visibility) && !defined(__APPLE__)
 #if ABSL_PER_THREAD_TLS
 // Prefer __thread to thread_local as benchmarks indicate it is a bit faster.
@@ -65,57 +65,57 @@ ABSL_PER_THREAD_TLS_KEYWORD ThreadIdentity* thread_identity_ptr = nullptr;
 #elif defined(ABSL_HAVE_THREAD_LOCAL)
 thread_local ThreadIdentity* thread_identity_ptr = nullptr;
 #endif  // ABSL_PER_THREAD_TLS
-#endif  // TLS or CPP11 
- 
-void SetCurrentThreadIdentity( 
-    ThreadIdentity* identity, ThreadIdentityReclaimerFunction reclaimer) { 
-  assert(CurrentThreadIdentityIfPresent() == nullptr); 
-  // Associate our destructor. 
-  // NOTE: This call to pthread_setspecific is currently the only immovable 
-  // barrier to CurrentThreadIdentity() always being async signal safe. 
-#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
-  // NOTE: Not async-safe.  But can be open-coded. 
+#endif  // TLS or CPP11
+
+void SetCurrentThreadIdentity(
+    ThreadIdentity* identity, ThreadIdentityReclaimerFunction reclaimer) {
+  assert(CurrentThreadIdentityIfPresent() == nullptr);
+  // Associate our destructor.
+  // NOTE: This call to pthread_setspecific is currently the only immovable
+  // barrier to CurrentThreadIdentity() always being async signal safe.
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+  // NOTE: Not async-safe.  But can be open-coded.
   y_absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey,
-                  reclaimer); 
- 
+                  reclaimer);
+
 #if defined(__EMSCRIPTEN__) || defined(__MINGW32__)
   // Emscripten and MinGW pthread implementations does not support signals.
-  // See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html 
-  // for more information. 
-  pthread_setspecific(thread_identity_pthread_key, 
-                      reinterpret_cast<void*>(identity)); 
-#else 
-  // We must mask signals around the call to setspecific as with current glibc, 
-  // a concurrent getspecific (needed for GetCurrentThreadIdentityIfPresent()) 
-  // may zero our value. 
-  // 
-  // While not officially async-signal safe, getspecific within a signal handler 
-  // is otherwise OK. 
-  sigset_t all_signals; 
-  sigset_t curr_signals; 
-  sigfillset(&all_signals); 
-  pthread_sigmask(SIG_SETMASK, &all_signals, &curr_signals); 
-  pthread_setspecific(thread_identity_pthread_key, 
-                      reinterpret_cast<void*>(identity)); 
-  pthread_sigmask(SIG_SETMASK, &curr_signals, nullptr); 
+  // See https://kripken.github.io/emscripten-site/docs/porting/pthreads.html
+  // for more information.
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+#else
+  // We must mask signals around the call to setspecific as with current glibc,
+  // a concurrent getspecific (needed for GetCurrentThreadIdentityIfPresent())
+  // may zero our value.
+  //
+  // While not officially async-signal safe, getspecific within a signal handler
+  // is otherwise OK.
+  sigset_t all_signals;
+  sigset_t curr_signals;
+  sigfillset(&all_signals);
+  pthread_sigmask(SIG_SETMASK, &all_signals, &curr_signals);
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+  pthread_sigmask(SIG_SETMASK, &curr_signals, nullptr);
 #endif  // !__EMSCRIPTEN__ && !__MINGW32__
- 
-#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS 
-  // NOTE: Not async-safe.  But can be open-coded. 
+
+#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS
+  // NOTE: Not async-safe.  But can be open-coded.
   y_absl::call_once(init_thread_identity_key_once, AllocateThreadIdentityKey,
-                  reclaimer); 
-  pthread_setspecific(thread_identity_pthread_key, 
-                      reinterpret_cast<void*>(identity)); 
-  thread_identity_ptr = identity; 
-#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
-  thread_local std::unique_ptr<ThreadIdentity, ThreadIdentityReclaimerFunction> 
-      holder(identity, reclaimer); 
-  thread_identity_ptr = identity; 
-#else 
-#error Unimplemented ABSL_THREAD_IDENTITY_MODE 
-#endif 
-} 
- 
+                  reclaimer);
+  pthread_setspecific(thread_identity_pthread_key,
+                      reinterpret_cast<void*>(identity));
+  thread_identity_ptr = identity;
+#elif ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+  thread_local std::unique_ptr<ThreadIdentity, ThreadIdentityReclaimerFunction>
+      holder(identity, reclaimer);
+  thread_identity_ptr = identity;
+#else
+#error Unimplemented ABSL_THREAD_IDENTITY_MODE
+#endif
+}
+
 #if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
     ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
 
@@ -128,28 +128,28 @@ ThreadIdentity* CurrentThreadIdentityIfPresent() { return thread_identity_ptr; }
 #endif
 #endif
 
-void ClearCurrentThreadIdentity() { 
-#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \ 
-    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
-  thread_identity_ptr = nullptr; 
-#elif ABSL_THREAD_IDENTITY_MODE == \ 
-      ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
-  // pthread_setspecific expected to clear value on destruction 
-  assert(CurrentThreadIdentityIfPresent() == nullptr); 
-#endif 
-} 
- 
-#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
-ThreadIdentity* CurrentThreadIdentityIfPresent() { 
-  bool initialized = pthread_key_initialized.load(std::memory_order_acquire); 
-  if (!initialized) { 
-    return nullptr; 
-  } 
-  return reinterpret_cast<ThreadIdentity*>( 
-      pthread_getspecific(thread_identity_pthread_key)); 
-} 
-#endif 
- 
-}  // namespace base_internal 
+void ClearCurrentThreadIdentity() {
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+  thread_identity_ptr = nullptr;
+#elif ABSL_THREAD_IDENTITY_MODE == \
+      ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+  // pthread_setspecific expected to clear value on destruction
+  assert(CurrentThreadIdentityIfPresent() == nullptr);
+#endif
+}
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+ThreadIdentity* CurrentThreadIdentityIfPresent() {
+  bool initialized = pthread_key_initialized.load(std::memory_order_acquire);
+  if (!initialized) {
+    return nullptr;
+  }
+  return reinterpret_cast<ThreadIdentity*>(
+      pthread_getspecific(thread_identity_pthread_key));
+}
+#endif
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.h
index 545150a307..09a6c0bce1 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.h
@@ -1,75 +1,75 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// Each active thread has an ThreadIdentity that may represent the thread in 
-// various level interfaces.  ThreadIdentity objects are never deallocated. 
-// When a thread terminates, its ThreadIdentity object may be reused for a 
-// thread created later. 
- 
-#ifndef ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_ 
-#define ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_ 
- 
-#ifndef _WIN32 
-#include <pthread.h> 
-// Defines __GOOGLE_GRTE_VERSION__ (via glibc-specific features.h) when 
-// supported. 
-#include <unistd.h> 
-#endif 
- 
-#include <atomic> 
-#include <cstdint> 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Each active thread has an ThreadIdentity that may represent the thread in
+// various level interfaces.  ThreadIdentity objects are never deallocated.
+// When a thread terminates, its ThreadIdentity object may be reused for a
+// thread created later.
+
+#ifndef ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
+#define ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
+
+#ifndef _WIN32
+#include <pthread.h>
+// Defines __GOOGLE_GRTE_VERSION__ (via glibc-specific features.h) when
+// supported.
+#include <unistd.h>
+#endif
+
+#include <atomic>
+#include <cstdint>
+
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/per_thread_tls.h"
 #include "y_absl/base/optimization.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
- 
-struct SynchLocksHeld; 
-struct SynchWaitParams; 
- 
-namespace base_internal { 
- 
-class SpinLock; 
-struct ThreadIdentity; 
- 
+
+struct SynchLocksHeld;
+struct SynchWaitParams;
+
+namespace base_internal {
+
+class SpinLock;
+struct ThreadIdentity;
+
 // Used by the implementation of y_absl::Mutex and y_absl::CondVar.
-struct PerThreadSynch { 
+struct PerThreadSynch {
   // The internal representation of y_absl::Mutex and y_absl::CondVar rely
-  // on the alignment of PerThreadSynch. Both store the address of the 
-  // PerThreadSynch in the high-order bits of their internal state, 
-  // which means the low kLowZeroBits of the address of PerThreadSynch 
-  // must be zero. 
-  static constexpr int kLowZeroBits = 8; 
-  static constexpr int kAlignment = 1 << kLowZeroBits; 
- 
-  // Returns the associated ThreadIdentity. 
-  // This can be implemented as a cast because we guarantee 
-  // PerThreadSynch is the first element of ThreadIdentity. 
-  ThreadIdentity* thread_identity() { 
-    return reinterpret_cast<ThreadIdentity*>(this); 
-  } 
- 
-  PerThreadSynch *next;  // Circular waiter queue; initialized to 0. 
-  PerThreadSynch *skip;  // If non-zero, all entries in Mutex queue 
-                         // up to and including "skip" have same 
-                         // condition as this, and will be woken later 
-  bool may_skip;         // if false while on mutex queue, a mutex unlocker 
-                         // is using this PerThreadSynch as a terminator.  Its 
-                         // skip field must not be filled in because the loop 
-                         // might then skip over the terminator. 
+  // on the alignment of PerThreadSynch. Both store the address of the
+  // PerThreadSynch in the high-order bits of their internal state,
+  // which means the low kLowZeroBits of the address of PerThreadSynch
+  // must be zero.
+  static constexpr int kLowZeroBits = 8;
+  static constexpr int kAlignment = 1 << kLowZeroBits;
+
+  // Returns the associated ThreadIdentity.
+  // This can be implemented as a cast because we guarantee
+  // PerThreadSynch is the first element of ThreadIdentity.
+  ThreadIdentity* thread_identity() {
+    return reinterpret_cast<ThreadIdentity*>(this);
+  }
+
+  PerThreadSynch *next;  // Circular waiter queue; initialized to 0.
+  PerThreadSynch *skip;  // If non-zero, all entries in Mutex queue
+                         // up to and including "skip" have same
+                         // condition as this, and will be woken later
+  bool may_skip;         // if false while on mutex queue, a mutex unlocker
+                         // is using this PerThreadSynch as a terminator.  Its
+                         // skip field must not be filled in because the loop
+                         // might then skip over the terminator.
   bool wake;             // This thread is to be woken from a Mutex.
   // If "x" is on a waiter list for a mutex, "x->cond_waiter" is true iff the
   // waiter is waiting on the mutex as part of a CV Wait or Mutex Await.
@@ -92,24 +92,24 @@ struct PerThreadSynch {
                                // chances of debug logging information being
                                // output successfully.
   int priority;                // Priority of thread (updated every so often).
- 
-  // State values: 
-  //   kAvailable: This PerThreadSynch is available. 
-  //   kQueued: This PerThreadSynch is unavailable, it's currently queued on a 
-  //            Mutex or CondVar waistlist. 
-  // 
-  // Transitions from kQueued to kAvailable require a release 
-  // barrier. This is needed as a waiter may use "state" to 
-  // independently observe that it's no longer queued. 
-  // 
-  // Transitions from kAvailable to kQueued require no barrier, they 
-  // are externally ordered by the Mutex. 
-  enum State { 
-    kAvailable, 
-    kQueued 
-  }; 
-  std::atomic<State> state; 
- 
+
+  // State values:
+  //   kAvailable: This PerThreadSynch is available.
+  //   kQueued: This PerThreadSynch is unavailable, it's currently queued on a
+  //            Mutex or CondVar waistlist.
+  //
+  // Transitions from kQueued to kAvailable require a release
+  // barrier. This is needed as a waiter may use "state" to
+  // independently observe that it's no longer queued.
+  //
+  // Transitions from kAvailable to kQueued require no barrier, they
+  // are externally ordered by the Mutex.
+  enum State {
+    kAvailable,
+    kQueued
+  };
+  std::atomic<State> state;
+
   // The wait parameters of the current wait.  waitp is null if the
   // thread is not waiting. Transitions from null to non-null must
   // occur before the enqueue commit point (state = kQueued in
@@ -121,112 +121,112 @@ struct PerThreadSynch {
   // but with an identical SynchWaitParams pointer, thus leaving the
   // pointer unchanged.
   SynchWaitParams* waitp;
- 
+
   intptr_t readers;     // Number of readers in mutex.
- 
+
   // When priority will next be read (cycles).
   int64_t next_priority_read_cycles;
- 
-  // Locks held; used during deadlock detection. 
-  // Allocated in Synch_GetAllLocks() and freed in ReclaimThreadIdentity(). 
-  SynchLocksHeld *all_locks; 
-}; 
- 
+
+  // Locks held; used during deadlock detection.
+  // Allocated in Synch_GetAllLocks() and freed in ReclaimThreadIdentity().
+  SynchLocksHeld *all_locks;
+};
+
 // The instances of this class are allocated in NewThreadIdentity() with an
 // alignment of PerThreadSynch::kAlignment.
-struct ThreadIdentity { 
-  // Must be the first member.  The Mutex implementation requires that 
-  // the PerThreadSynch object associated with each thread is 
-  // PerThreadSynch::kAlignment aligned.  We provide this alignment on 
-  // ThreadIdentity itself. 
-  PerThreadSynch per_thread_synch; 
- 
+struct ThreadIdentity {
+  // Must be the first member.  The Mutex implementation requires that
+  // the PerThreadSynch object associated with each thread is
+  // PerThreadSynch::kAlignment aligned.  We provide this alignment on
+  // ThreadIdentity itself.
+  PerThreadSynch per_thread_synch;
+
   // Private: Reserved for y_absl::synchronization_internal::Waiter.
-  struct WaiterState { 
+  struct WaiterState {
     alignas(void*) char data[128];
-  } waiter_state; 
- 
-  // Used by PerThreadSem::{Get,Set}ThreadBlockedCounter(). 
-  std::atomic<int>* blocked_count_ptr; 
- 
-  // The following variables are mostly read/written just by the 
-  // thread itself.  The only exception is that these are read by 
-  // a ticker thread as a hint. 
-  std::atomic<int> ticker;      // Tick counter, incremented once per second. 
-  std::atomic<int> wait_start;  // Ticker value when thread started waiting. 
-  std::atomic<bool> is_idle;    // Has thread become idle yet? 
- 
-  ThreadIdentity* next; 
-}; 
- 
-// Returns the ThreadIdentity object representing the calling thread; guaranteed 
-// to be unique for its lifetime.  The returned object will remain valid for the 
-// program's lifetime; although it may be re-assigned to a subsequent thread. 
-// If one does not exist, return nullptr instead. 
-// 
-// Does not malloc(*), and is async-signal safe. 
-// [*] Technically pthread_setspecific() does malloc on first use; however this 
-// is handled internally within tcmalloc's initialization already. 
-// 
-// New ThreadIdentity objects can be constructed and associated with a thread 
-// by calling GetOrCreateCurrentThreadIdentity() in per-thread-sem.h. 
-ThreadIdentity* CurrentThreadIdentityIfPresent(); 
- 
-using ThreadIdentityReclaimerFunction = void (*)(void*); 
- 
-// Sets the current thread identity to the given value.  'reclaimer' is a 
-// pointer to the global function for cleaning up instances on thread 
-// destruction. 
-void SetCurrentThreadIdentity(ThreadIdentity* identity, 
-                              ThreadIdentityReclaimerFunction reclaimer); 
- 
-// Removes the currently associated ThreadIdentity from the running thread. 
-// This must be called from inside the ThreadIdentityReclaimerFunction, and only 
-// from that function. 
-void ClearCurrentThreadIdentity(); 
- 
-// May be chosen at compile time via: -DABSL_FORCE_THREAD_IDENTITY_MODE=<mode 
-// index> 
-#ifdef ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
+  } waiter_state;
+
+  // Used by PerThreadSem::{Get,Set}ThreadBlockedCounter().
+  std::atomic<int>* blocked_count_ptr;
+
+  // The following variables are mostly read/written just by the
+  // thread itself.  The only exception is that these are read by
+  // a ticker thread as a hint.
+  std::atomic<int> ticker;      // Tick counter, incremented once per second.
+  std::atomic<int> wait_start;  // Ticker value when thread started waiting.
+  std::atomic<bool> is_idle;    // Has thread become idle yet?
+
+  ThreadIdentity* next;
+};
+
+// Returns the ThreadIdentity object representing the calling thread; guaranteed
+// to be unique for its lifetime.  The returned object will remain valid for the
+// program's lifetime; although it may be re-assigned to a subsequent thread.
+// If one does not exist, return nullptr instead.
+//
+// Does not malloc(*), and is async-signal safe.
+// [*] Technically pthread_setspecific() does malloc on first use; however this
+// is handled internally within tcmalloc's initialization already.
+//
+// New ThreadIdentity objects can be constructed and associated with a thread
+// by calling GetOrCreateCurrentThreadIdentity() in per-thread-sem.h.
+ThreadIdentity* CurrentThreadIdentityIfPresent();
+
+using ThreadIdentityReclaimerFunction = void (*)(void*);
+
+// Sets the current thread identity to the given value.  'reclaimer' is a
+// pointer to the global function for cleaning up instances on thread
+// destruction.
+void SetCurrentThreadIdentity(ThreadIdentity* identity,
+                              ThreadIdentityReclaimerFunction reclaimer);
+
+// Removes the currently associated ThreadIdentity from the running thread.
+// This must be called from inside the ThreadIdentityReclaimerFunction, and only
+// from that function.
+void ClearCurrentThreadIdentity();
+
+// May be chosen at compile time via: -DABSL_FORCE_THREAD_IDENTITY_MODE=<mode
+// index>
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
 #error ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC cannot be directly set
-#else 
-#define ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 0 
-#endif 
- 
-#ifdef ABSL_THREAD_IDENTITY_MODE_USE_TLS 
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 0
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_TLS
 #error ABSL_THREAD_IDENTITY_MODE_USE_TLS cannot be directly set
-#else 
-#define ABSL_THREAD_IDENTITY_MODE_USE_TLS 1 
-#endif 
- 
-#ifdef ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_TLS 1
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE_USE_CPP11
 #error ABSL_THREAD_IDENTITY_MODE_USE_CPP11 cannot be directly set
-#else 
-#define ABSL_THREAD_IDENTITY_MODE_USE_CPP11 2 
-#endif 
- 
-#ifdef ABSL_THREAD_IDENTITY_MODE 
+#else
+#define ABSL_THREAD_IDENTITY_MODE_USE_CPP11 2
+#endif
+
+#ifdef ABSL_THREAD_IDENTITY_MODE
 #error ABSL_THREAD_IDENTITY_MODE cannot be directly set
-#elif defined(ABSL_FORCE_THREAD_IDENTITY_MODE) 
-#define ABSL_THREAD_IDENTITY_MODE ABSL_FORCE_THREAD_IDENTITY_MODE 
+#elif defined(ABSL_FORCE_THREAD_IDENTITY_MODE)
+#define ABSL_THREAD_IDENTITY_MODE ABSL_FORCE_THREAD_IDENTITY_MODE
 #elif defined(_WIN32) && !defined(__MINGW32__)
-#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
+#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11
 #elif defined(__APPLE__) && defined(ABSL_HAVE_THREAD_LOCAL)
 #define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_CPP11
 #elif ABSL_PER_THREAD_TLS && defined(__GOOGLE_GRTE_VERSION__) &&        \
-    (__GOOGLE_GRTE_VERSION__ >= 20140228L) 
-// Support for async-safe TLS was specifically added in GRTEv4.  It's not 
-// present in the upstream eglibc. 
-// Note:  Current default for production systems. 
-#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_TLS 
-#else 
-#define ABSL_THREAD_IDENTITY_MODE \ 
-  ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
-#endif 
- 
-#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \ 
-    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11 
- 
+    (__GOOGLE_GRTE_VERSION__ >= 20140228L)
+// Support for async-safe TLS was specifically added in GRTEv4.  It's not
+// present in the upstream eglibc.
+// Note:  Current default for production systems.
+#define ABSL_THREAD_IDENTITY_MODE ABSL_THREAD_IDENTITY_MODE_USE_TLS
+#else
+#define ABSL_THREAD_IDENTITY_MODE \
+  ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+#endif
+
+#if ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_TLS || \
+    ABSL_THREAD_IDENTITY_MODE == ABSL_THREAD_IDENTITY_MODE_USE_CPP11
+
 #if ABSL_PER_THREAD_TLS
 ABSL_CONST_INIT extern ABSL_PER_THREAD_TLS_KEYWORD ThreadIdentity*
     thread_identity_ptr;
@@ -235,7 +235,7 @@ ABSL_CONST_INIT extern thread_local ThreadIdentity* thread_identity_ptr;
 #else
 #error Thread-local storage not detected on this platform
 #endif
- 
+
 // thread_local variables cannot be in headers exposed by DLLs or in certain
 // build configurations on Apple platforms. However, it is important for
 // performance reasons in general that `CurrentThreadIdentityIfPresent` be
@@ -248,18 +248,18 @@ ABSL_CONST_INIT extern thread_local ThreadIdentity* thread_identity_ptr;
 #endif
 
 #ifdef ABSL_INTERNAL_INLINE_CURRENT_THREAD_IDENTITY_IF_PRESENT
-inline ThreadIdentity* CurrentThreadIdentityIfPresent() { 
-  return thread_identity_ptr; 
-} 
+inline ThreadIdentity* CurrentThreadIdentityIfPresent() {
+  return thread_identity_ptr;
+}
+#endif
+
+#elif ABSL_THREAD_IDENTITY_MODE != \
+    ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC
+#error Unknown ABSL_THREAD_IDENTITY_MODE
 #endif
- 
-#elif ABSL_THREAD_IDENTITY_MODE != \ 
-    ABSL_THREAD_IDENTITY_MODE_USE_POSIX_SETSPECIFIC 
-#error Unknown ABSL_THREAD_IDENTITY_MODE 
-#endif 
- 
-}  // namespace base_internal 
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc
index f8f6e5dc27..dcce5aedc3 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc
@@ -1,196 +1,196 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/throw_delegate.h"
- 
-#include <cstdlib> 
-#include <functional> 
-#include <new> 
-#include <stdexcept> 
+
+#include <cstdlib>
+#include <functional>
+#include <new>
+#include <stdexcept>
 
 #include "y_absl/base/config.h"
 #include "y_absl/base/internal/raw_logging.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
+namespace base_internal {
+
 // NOTE: The various STL exception throwing functions are placed within the
 // #ifdef blocks so the symbols aren't exposed on platforms that don't support
 // them, such as the Android NDK. For example, ANGLE fails to link when building
 // within AOSP without them, since the STL functions don't exist.
-namespace { 
+namespace {
 #ifdef ABSL_HAVE_EXCEPTIONS
-template <typename T> 
-[[noreturn]] void Throw(const T& error) { 
-  throw error; 
+template <typename T>
+[[noreturn]] void Throw(const T& error) {
+  throw error;
 }
-#endif 
-}  // namespace 
- 
+#endif
+}  // namespace
+
 void ThrowStdLogicError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::logic_error(what_arg)); 
+  Throw(std::logic_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdLogicError(const char* what_arg) { 
+}
+void ThrowStdLogicError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::logic_error(what_arg)); 
+  Throw(std::logic_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
+}
 void ThrowStdInvalidArgument(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::invalid_argument(what_arg)); 
+  Throw(std::invalid_argument(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdInvalidArgument(const char* what_arg) { 
+}
+void ThrowStdInvalidArgument(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::invalid_argument(what_arg)); 
+  Throw(std::invalid_argument(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdDomainError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::domain_error(what_arg)); 
+  Throw(std::domain_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdDomainError(const char* what_arg) { 
+}
+void ThrowStdDomainError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::domain_error(what_arg)); 
+  Throw(std::domain_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdLengthError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::length_error(what_arg)); 
+  Throw(std::length_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdLengthError(const char* what_arg) { 
+}
+void ThrowStdLengthError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::length_error(what_arg)); 
+  Throw(std::length_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdOutOfRange(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::out_of_range(what_arg)); 
+  Throw(std::out_of_range(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdOutOfRange(const char* what_arg) { 
+}
+void ThrowStdOutOfRange(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::out_of_range(what_arg)); 
+  Throw(std::out_of_range(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdRuntimeError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::runtime_error(what_arg)); 
+  Throw(std::runtime_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdRuntimeError(const char* what_arg) { 
+}
+void ThrowStdRuntimeError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::runtime_error(what_arg)); 
+  Throw(std::runtime_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdRangeError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::range_error(what_arg)); 
+  Throw(std::range_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdRangeError(const char* what_arg) { 
+}
+void ThrowStdRangeError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::range_error(what_arg)); 
+  Throw(std::range_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdOverflowError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::overflow_error(what_arg)); 
+  Throw(std::overflow_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdOverflowError(const char* what_arg) { 
+}
+void ThrowStdOverflowError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::overflow_error(what_arg)); 
+  Throw(std::overflow_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdUnderflowError(const TString& what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::underflow_error(what_arg)); 
+  Throw(std::underflow_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg.c_str());
   std::abort();
 #endif
-} 
-void ThrowStdUnderflowError(const char* what_arg) { 
+}
+void ThrowStdUnderflowError(const char* what_arg) {
 #ifdef ABSL_HAVE_EXCEPTIONS
-  Throw(std::underflow_error(what_arg)); 
+  Throw(std::underflow_error(what_arg));
 #else
   ABSL_RAW_LOG(FATAL, "%s", what_arg);
   std::abort();
 #endif
-} 
- 
+}
+
 void ThrowStdBadFunctionCall() {
 #ifdef ABSL_HAVE_EXCEPTIONS
   Throw(std::bad_function_call());
@@ -198,7 +198,7 @@ void ThrowStdBadFunctionCall() {
   std::abort();
 #endif
 }
- 
+
 void ThrowStdBadAlloc() {
 #ifdef ABSL_HAVE_EXCEPTIONS
   Throw(std::bad_alloc());
@@ -206,7 +206,7 @@ void ThrowStdBadAlloc() {
   std::abort();
 #endif
 }
- 
-}  // namespace base_internal 
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.h
index 12905c0a3b..fda03a5db3 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.h
@@ -1,75 +1,75 @@
-// 
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ 
-#define ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ 
- 
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
+#define ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
+
 #include <util/generic/string.h>
 
 #include "y_absl/base/config.h"
 
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-// Helper functions that allow throwing exceptions consistently from anywhere. 
-// The main use case is for header-based libraries (eg templates), as they will 
-// be built by many different targets with their own compiler options. 
-// In particular, this will allow a safe way to throw exceptions even if the 
-// caller is compiled with -fno-exceptions.  This is intended for implementing 
-// things like map<>::at(), which the standard documents as throwing an 
-// exception on error. 
-// 
-// Using other techniques like #if tricks could lead to ODR violations. 
-// 
-// You shouldn't use it unless you're writing code that you know will be built 
-// both with and without exceptions and you need to conform to an interface 
-// that uses exceptions. 
- 
+namespace base_internal {
+
+// Helper functions that allow throwing exceptions consistently from anywhere.
+// The main use case is for header-based libraries (eg templates), as they will
+// be built by many different targets with their own compiler options.
+// In particular, this will allow a safe way to throw exceptions even if the
+// caller is compiled with -fno-exceptions.  This is intended for implementing
+// things like map<>::at(), which the standard documents as throwing an
+// exception on error.
+//
+// Using other techniques like #if tricks could lead to ODR violations.
+//
+// You shouldn't use it unless you're writing code that you know will be built
+// both with and without exceptions and you need to conform to an interface
+// that uses exceptions.
+
 [[noreturn]] void ThrowStdLogicError(const TString& what_arg);
-[[noreturn]] void ThrowStdLogicError(const char* what_arg); 
+[[noreturn]] void ThrowStdLogicError(const char* what_arg);
 [[noreturn]] void ThrowStdInvalidArgument(const TString& what_arg);
-[[noreturn]] void ThrowStdInvalidArgument(const char* what_arg); 
+[[noreturn]] void ThrowStdInvalidArgument(const char* what_arg);
 [[noreturn]] void ThrowStdDomainError(const TString& what_arg);
-[[noreturn]] void ThrowStdDomainError(const char* what_arg); 
+[[noreturn]] void ThrowStdDomainError(const char* what_arg);
 [[noreturn]] void ThrowStdLengthError(const TString& what_arg);
-[[noreturn]] void ThrowStdLengthError(const char* what_arg); 
+[[noreturn]] void ThrowStdLengthError(const char* what_arg);
 [[noreturn]] void ThrowStdOutOfRange(const TString& what_arg);
-[[noreturn]] void ThrowStdOutOfRange(const char* what_arg); 
+[[noreturn]] void ThrowStdOutOfRange(const char* what_arg);
 [[noreturn]] void ThrowStdRuntimeError(const TString& what_arg);
-[[noreturn]] void ThrowStdRuntimeError(const char* what_arg); 
+[[noreturn]] void ThrowStdRuntimeError(const char* what_arg);
 [[noreturn]] void ThrowStdRangeError(const TString& what_arg);
-[[noreturn]] void ThrowStdRangeError(const char* what_arg); 
+[[noreturn]] void ThrowStdRangeError(const char* what_arg);
 [[noreturn]] void ThrowStdOverflowError(const TString& what_arg);
-[[noreturn]] void ThrowStdOverflowError(const char* what_arg); 
+[[noreturn]] void ThrowStdOverflowError(const char* what_arg);
 [[noreturn]] void ThrowStdUnderflowError(const TString& what_arg);
-[[noreturn]] void ThrowStdUnderflowError(const char* what_arg); 
- 
-[[noreturn]] void ThrowStdBadFunctionCall(); 
-[[noreturn]] void ThrowStdBadAlloc(); 
- 
-// ThrowStdBadArrayNewLength() cannot be consistently supported because 
-// std::bad_array_new_length is missing in libstdc++ until 4.9.0. 
-// https://gcc.gnu.org/onlinedocs/gcc-4.8.3/libstdc++/api/a01379_source.html 
-// https://gcc.gnu.org/onlinedocs/gcc-4.9.0/libstdc++/api/a01327_source.html 
-// libcxx (as of 3.2) and msvc (as of 2015) both have it. 
-// [[noreturn]] void ThrowStdBadArrayNewLength(); 
- 
-}  // namespace base_internal 
+[[noreturn]] void ThrowStdUnderflowError(const char* what_arg);
+
+[[noreturn]] void ThrowStdBadFunctionCall();
+[[noreturn]] void ThrowStdBadAlloc();
+
+// ThrowStdBadArrayNewLength() cannot be consistently supported because
+// std::bad_array_new_length is missing in libstdc++ until 4.9.0.
+// https://gcc.gnu.org/onlinedocs/gcc-4.8.3/libstdc++/api/a01379_source.html
+// https://gcc.gnu.org/onlinedocs/gcc-4.9.0/libstdc++/api/a01327_source.html
+// libcxx (as of 3.2) and msvc (as of 2015) both have it.
+// [[noreturn]] void ThrowStdBadArrayNewLength();
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_ 
+
+#endif  // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/ya.make b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/ya.make
index dd89ba2651..1b956ad494 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/ya.make
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/ya.make
@@ -1,31 +1,31 @@
-# Generated by devtools/yamaker. 
- 
-LIBRARY() 
- 
+# Generated by devtools/yamaker.
+
+LIBRARY()
+
 WITHOUT_LICENSE_TEXTS()
- 
+
 OWNER(
     somov
     g:cpp-contrib
 )
 
-LICENSE(Apache-2.0) 
- 
-PEERDIR( 
+LICENSE(Apache-2.0)
+
+PEERDIR(
     contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging
     contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity
-) 
- 
+)
+
 ADDINCL(
     GLOBAL contrib/restricted/abseil-cpp-tstring
 )
- 
-NO_COMPILER_WARNINGS() 
- 
+
+NO_COMPILER_WARNINGS()
+
 SRCDIR(contrib/restricted/abseil-cpp-tstring/y_absl/base/internal)
- 
-SRCS( 
-    throw_delegate.cc 
-) 
- 
-END() 
+
+SRCS(
+    throw_delegate.cc
+)
+
+END()
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/tsan_mutex_interface.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/tsan_mutex_interface.h
index 3b4a5f3e1e..69a61d0814 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/tsan_mutex_interface.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/tsan_mutex_interface.h
@@ -1,68 +1,68 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// This file is intended solely for spinlock.h. 
-// It provides ThreadSanitizer annotations for custom mutexes. 
-// See <sanitizer/tsan_interface.h> for meaning of these annotations. 
- 
-#ifndef ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_ 
-#define ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_ 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is intended solely for spinlock.h.
+// It provides ThreadSanitizer annotations for custom mutexes.
+// See <sanitizer/tsan_interface.h> for meaning of these annotations.
+
+#ifndef ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
+#define ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
+
 #include "y_absl/base/config.h"
 
-// ABSL_INTERNAL_HAVE_TSAN_INTERFACE 
-// Macro intended only for internal use. 
-// 
-// Checks whether LLVM Thread Sanitizer interfaces are available. 
-// First made available in LLVM 5.0 (Sep 2017). 
-#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE 
-#error "ABSL_INTERNAL_HAVE_TSAN_INTERFACE cannot be directly set." 
-#endif 
- 
+// ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+// Macro intended only for internal use.
+//
+// Checks whether LLVM Thread Sanitizer interfaces are available.
+// First made available in LLVM 5.0 (Sep 2017).
+#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+#error "ABSL_INTERNAL_HAVE_TSAN_INTERFACE cannot be directly set."
+#endif
+
 #if defined(ABSL_HAVE_THREAD_SANITIZER) && defined(__has_include)
-#if __has_include(<sanitizer/tsan_interface.h>) 
-#define ABSL_INTERNAL_HAVE_TSAN_INTERFACE 1 
-#endif 
-#endif 
- 
-#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE 
-#include <sanitizer/tsan_interface.h> 
- 
-#define ABSL_TSAN_MUTEX_CREATE __tsan_mutex_create 
-#define ABSL_TSAN_MUTEX_DESTROY __tsan_mutex_destroy 
-#define ABSL_TSAN_MUTEX_PRE_LOCK __tsan_mutex_pre_lock 
-#define ABSL_TSAN_MUTEX_POST_LOCK __tsan_mutex_post_lock 
-#define ABSL_TSAN_MUTEX_PRE_UNLOCK __tsan_mutex_pre_unlock 
-#define ABSL_TSAN_MUTEX_POST_UNLOCK __tsan_mutex_post_unlock 
-#define ABSL_TSAN_MUTEX_PRE_SIGNAL __tsan_mutex_pre_signal 
-#define ABSL_TSAN_MUTEX_POST_SIGNAL __tsan_mutex_post_signal 
-#define ABSL_TSAN_MUTEX_PRE_DIVERT __tsan_mutex_pre_divert 
-#define ABSL_TSAN_MUTEX_POST_DIVERT __tsan_mutex_post_divert 
- 
-#else 
- 
-#define ABSL_TSAN_MUTEX_CREATE(...) 
-#define ABSL_TSAN_MUTEX_DESTROY(...) 
-#define ABSL_TSAN_MUTEX_PRE_LOCK(...) 
-#define ABSL_TSAN_MUTEX_POST_LOCK(...) 
-#define ABSL_TSAN_MUTEX_PRE_UNLOCK(...) 
-#define ABSL_TSAN_MUTEX_POST_UNLOCK(...) 
-#define ABSL_TSAN_MUTEX_PRE_SIGNAL(...) 
-#define ABSL_TSAN_MUTEX_POST_SIGNAL(...) 
-#define ABSL_TSAN_MUTEX_PRE_DIVERT(...) 
-#define ABSL_TSAN_MUTEX_POST_DIVERT(...) 
- 
-#endif 
- 
-#endif  // ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_ 
+#if __has_include(<sanitizer/tsan_interface.h>)
+#define ABSL_INTERNAL_HAVE_TSAN_INTERFACE 1
+#endif
+#endif
+
+#ifdef ABSL_INTERNAL_HAVE_TSAN_INTERFACE
+#include <sanitizer/tsan_interface.h>
+
+#define ABSL_TSAN_MUTEX_CREATE __tsan_mutex_create
+#define ABSL_TSAN_MUTEX_DESTROY __tsan_mutex_destroy
+#define ABSL_TSAN_MUTEX_PRE_LOCK __tsan_mutex_pre_lock
+#define ABSL_TSAN_MUTEX_POST_LOCK __tsan_mutex_post_lock
+#define ABSL_TSAN_MUTEX_PRE_UNLOCK __tsan_mutex_pre_unlock
+#define ABSL_TSAN_MUTEX_POST_UNLOCK __tsan_mutex_post_unlock
+#define ABSL_TSAN_MUTEX_PRE_SIGNAL __tsan_mutex_pre_signal
+#define ABSL_TSAN_MUTEX_POST_SIGNAL __tsan_mutex_post_signal
+#define ABSL_TSAN_MUTEX_PRE_DIVERT __tsan_mutex_pre_divert
+#define ABSL_TSAN_MUTEX_POST_DIVERT __tsan_mutex_post_divert
+
+#else
+
+#define ABSL_TSAN_MUTEX_CREATE(...)
+#define ABSL_TSAN_MUTEX_DESTROY(...)
+#define ABSL_TSAN_MUTEX_PRE_LOCK(...)
+#define ABSL_TSAN_MUTEX_POST_LOCK(...)
+#define ABSL_TSAN_MUTEX_PRE_UNLOCK(...)
+#define ABSL_TSAN_MUTEX_POST_UNLOCK(...)
+#define ABSL_TSAN_MUTEX_PRE_SIGNAL(...)
+#define ABSL_TSAN_MUTEX_POST_SIGNAL(...)
+#define ABSL_TSAN_MUTEX_PRE_DIVERT(...)
+#define ABSL_TSAN_MUTEX_POST_DIVERT(...)
+
+#endif
+
+#endif  // ABSL_BASE_INTERNAL_TSAN_MUTEX_INTERFACE_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unaligned_access.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unaligned_access.h
index 49b83502e5..7dbb23b1de 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unaligned_access.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unaligned_access.h
@@ -1,82 +1,82 @@
-// 
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
- 
-#ifndef ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_ 
-#define ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_ 
- 
-#include <string.h> 
-
-#include <cstdint> 
- 
+//
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
+#define ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
+
+#include <string.h>
+
+#include <cstdint>
+
 #include "y_absl/base/attributes.h"
 #include "y_absl/base/config.h"
- 
-// unaligned APIs 
- 
-// Portable handling of unaligned loads, stores, and copies. 
- 
-// The unaligned API is C++ only.  The declarations use C++ features 
-// (namespaces, inline) which are absent or incompatible in C. 
-#if defined(__cplusplus) 
+
+// unaligned APIs
+
+// Portable handling of unaligned loads, stores, and copies.
+
+// The unaligned API is C++ only.  The declarations use C++ features
+// (namespaces, inline) which are absent or incompatible in C.
+#if defined(__cplusplus)
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-inline uint16_t UnalignedLoad16(const void *p) { 
-  uint16_t t; 
-  memcpy(&t, p, sizeof t); 
-  return t; 
-} 
- 
-inline uint32_t UnalignedLoad32(const void *p) { 
-  uint32_t t; 
-  memcpy(&t, p, sizeof t); 
-  return t; 
-} 
- 
-inline uint64_t UnalignedLoad64(const void *p) { 
-  uint64_t t; 
-  memcpy(&t, p, sizeof t); 
-  return t; 
-} 
- 
-inline void UnalignedStore16(void *p, uint16_t v) { memcpy(p, &v, sizeof v); } 
- 
-inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); } 
- 
-inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); } 
- 
-}  // namespace base_internal 
+namespace base_internal {
+
+inline uint16_t UnalignedLoad16(const void *p) {
+  uint16_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint32_t UnalignedLoad32(const void *p) {
+  uint32_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline uint64_t UnalignedLoad64(const void *p) {
+  uint64_t t;
+  memcpy(&t, p, sizeof t);
+  return t;
+}
+
+inline void UnalignedStore16(void *p, uint16_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
+
+inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \ 
+
+#define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
   (y_absl::base_internal::UnalignedLoad16(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \ 
+#define ABSL_INTERNAL_UNALIGNED_LOAD32(_p) \
   (y_absl::base_internal::UnalignedLoad32(_p))
-#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \ 
+#define ABSL_INTERNAL_UNALIGNED_LOAD64(_p) \
   (y_absl::base_internal::UnalignedLoad64(_p))
- 
-#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \ 
+
+#define ABSL_INTERNAL_UNALIGNED_STORE16(_p, _val) \
   (y_absl::base_internal::UnalignedStore16(_p, _val))
-#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \ 
+#define ABSL_INTERNAL_UNALIGNED_STORE32(_p, _val) \
   (y_absl::base_internal::UnalignedStore32(_p, _val))
-#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \ 
+#define ABSL_INTERNAL_UNALIGNED_STORE64(_p, _val) \
   (y_absl::base_internal::UnalignedStore64(_p, _val))
- 
-#endif  // defined(__cplusplus), end of unaligned API 
- 
-#endif  // ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_ 
+
+#endif  // defined(__cplusplus), end of unaligned API
+
+#endif  // ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.cc
index b6c684ca76..072a9852fa 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.cc
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.cc
@@ -1,69 +1,69 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
- 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #include "y_absl/base/internal/unscaledcycleclock.h"
- 
-#if ABSL_USE_UNSCALED_CYCLECLOCK 
- 
-#if defined(_WIN32) 
-#include <intrin.h> 
-#endif 
- 
-#if defined(__powerpc__) || defined(__ppc__) 
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+#if defined(_WIN32)
+#include <intrin.h>
+#endif
+
+#if defined(__powerpc__) || defined(__ppc__)
 #ifdef __GLIBC__
 #include <sys/platform/ppc.h>
 #elif defined(__FreeBSD__)
 #include <sys/sysctl.h>
 #include <sys/types.h>
-#endif 
 #endif
- 
+#endif
+
 #include "y_absl/base/internal/sysinfo.h"
- 
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace base_internal { 
- 
-#if defined(__i386__) 
- 
-int64_t UnscaledCycleClock::Now() { 
-  int64_t ret; 
-  __asm__ volatile("rdtsc" : "=A"(ret)); 
-  return ret; 
-} 
- 
-double UnscaledCycleClock::Frequency() { 
-  return base_internal::NominalCPUFrequency(); 
-} 
- 
-#elif defined(__x86_64__) 
- 
-int64_t UnscaledCycleClock::Now() { 
-  uint64_t low, high; 
-  __asm__ volatile("rdtsc" : "=a"(low), "=d"(high)); 
-  return (high << 32) | low; 
-} 
- 
-double UnscaledCycleClock::Frequency() { 
-  return base_internal::NominalCPUFrequency(); 
-} 
- 
-#elif defined(__powerpc__) || defined(__ppc__) 
- 
-int64_t UnscaledCycleClock::Now() { 
+namespace base_internal {
+
+#if defined(__i386__)
+
+int64_t UnscaledCycleClock::Now() {
+  int64_t ret;
+  __asm__ volatile("rdtsc" : "=A"(ret));
+  return ret;
+}
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#elif defined(__x86_64__)
+
+int64_t UnscaledCycleClock::Now() {
+  uint64_t low, high;
+  __asm__ volatile("rdtsc" : "=a"(low), "=d"(high));
+  return (high << 32) | low;
+}
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#elif defined(__powerpc__) || defined(__ppc__)
+
+int64_t UnscaledCycleClock::Now() {
 #ifdef __GLIBC__
-  return __ppc_get_timebase(); 
+  return __ppc_get_timebase();
 #else
 #ifdef __powerpc64__
   int64_t tbr;
@@ -82,11 +82,11 @@ int64_t UnscaledCycleClock::Now() {
   return (static_cast<int64_t>(tbu) << 32) | tbl;
 #endif
 #endif
-} 
- 
-double UnscaledCycleClock::Frequency() { 
+}
+
+double UnscaledCycleClock::Frequency() {
 #ifdef __GLIBC__
-  return __ppc_get_timebase_freq(); 
+  return __ppc_get_timebase_freq();
 #elif defined(_AIX)
   // This is the same constant value as returned by
   // __ppc_get_timebase_freq().
@@ -103,26 +103,26 @@ double UnscaledCycleClock::Frequency() {
 #else
 #error Must implement UnscaledCycleClock::Frequency()
 #endif
-} 
- 
-#elif defined(__aarch64__) 
- 
-// System timer of ARMv8 runs at a different frequency than the CPU's. 
-// The frequency is fixed, typically in the range 1-50MHz.  It can be 
-// read at CNTFRQ special register.  We assume the OS has set up 
-// the virtual timer properly. 
-int64_t UnscaledCycleClock::Now() { 
-  int64_t virtual_timer_value; 
-  asm volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer_value)); 
-  return virtual_timer_value; 
-} 
- 
-double UnscaledCycleClock::Frequency() { 
-  uint64_t aarch64_timer_frequency; 
-  asm volatile("mrs %0, cntfrq_el0" : "=r"(aarch64_timer_frequency)); 
-  return aarch64_timer_frequency; 
-} 
- 
+}
+
+#elif defined(__aarch64__)
+
+// System timer of ARMv8 runs at a different frequency than the CPU's.
+// The frequency is fixed, typically in the range 1-50MHz.  It can be
+// read at CNTFRQ special register.  We assume the OS has set up
+// the virtual timer properly.
+int64_t UnscaledCycleClock::Now() {
+  int64_t virtual_timer_value;
+  asm volatile("mrs %0, cntvct_el0" : "=r"(virtual_timer_value));
+  return virtual_timer_value;
+}
+
+double UnscaledCycleClock::Frequency() {
+  uint64_t aarch64_timer_frequency;
+  asm volatile("mrs %0, cntfrq_el0" : "=r"(aarch64_timer_frequency));
+  return aarch64_timer_frequency;
+}
+
 #elif defined(__riscv)
 
 int64_t UnscaledCycleClock::Now() {
@@ -135,20 +135,20 @@ double UnscaledCycleClock::Frequency() {
   return base_internal::NominalCPUFrequency();
 }
 
-#elif defined(_M_IX86) || defined(_M_X64) 
- 
-#pragma intrinsic(__rdtsc) 
- 
+#elif defined(_M_IX86) || defined(_M_X64)
+
+#pragma intrinsic(__rdtsc)
+
 int64_t UnscaledCycleClock::Now() { return __rdtsc(); }
- 
-double UnscaledCycleClock::Frequency() { 
-  return base_internal::NominalCPUFrequency(); 
-} 
- 
-#endif 
- 
-}  // namespace base_internal 
+
+double UnscaledCycleClock::Frequency() {
+  return base_internal::NominalCPUFrequency();
+}
+
+#endif
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_USE_UNSCALED_CYCLECLOCK 
+
+#endif  // ABSL_USE_UNSCALED_CYCLECLOCK
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.h
index 75f4480df6..618c5c7e73 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.h
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.h
@@ -1,124 +1,124 @@
-// Copyright 2017 The Abseil Authors. 
-// 
-// Licensed under the Apache License, Version 2.0 (the "License"); 
-// you may not use this file except in compliance with the License. 
-// You may obtain a copy of the License at 
-// 
-//      https://www.apache.org/licenses/LICENSE-2.0 
-// 
-// Unless required by applicable law or agreed to in writing, software 
-// distributed under the License is distributed on an "AS IS" BASIS, 
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-// See the License for the specific language governing permissions and 
-// limitations under the License. 
-// 
-// UnscaledCycleClock 
-//    An UnscaledCycleClock yields the value and frequency of a cycle counter 
-//    that increments at a rate that is approximately constant. 
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// UnscaledCycleClock
+//    An UnscaledCycleClock yields the value and frequency of a cycle counter
+//    that increments at a rate that is approximately constant.
 //    This class is for internal use only, you should consider using CycleClock
 //    instead.
-// 
-// Notes: 
-// The cycle counter frequency is not necessarily the core clock frequency. 
-// That is, CycleCounter cycles are not necessarily "CPU cycles". 
-// 
-// An arbitrary offset may have been added to the counter at power on. 
-// 
-// On some platforms, the rate and offset of the counter may differ 
-// slightly when read from different CPUs of a multiprocessor.  Usually, 
-// we try to ensure that the operating system adjusts values periodically 
-// so that values agree approximately.   If you need stronger guarantees, 
-// consider using alternate interfaces. 
-// 
-// The CPU is not required to maintain the ordering of a cycle counter read 
-// with respect to surrounding instructions. 
- 
-#ifndef ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_ 
-#define ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_ 
- 
-#include <cstdint> 
- 
-#if defined(__APPLE__) 
-#include <TargetConditionals.h> 
-#endif 
- 
+//
+// Notes:
+// The cycle counter frequency is not necessarily the core clock frequency.
+// That is, CycleCounter cycles are not necessarily "CPU cycles".
+//
+// An arbitrary offset may have been added to the counter at power on.
+//
+// On some platforms, the rate and offset of the counter may differ
+// slightly when read from different CPUs of a multiprocessor.  Usually,
+// we try to ensure that the operating system adjusts values periodically
+// so that values agree approximately.   If you need stronger guarantees,
+// consider using alternate interfaces.
+//
+// The CPU is not required to maintain the ordering of a cycle counter read
+// with respect to surrounding instructions.
+
+#ifndef ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_
+#define ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_
+
+#include <cstdint>
+
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
 #include "y_absl/base/port.h"
- 
-// The following platforms have an implementation of a hardware counter. 
-#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \ 
+
+// The following platforms have an implementation of a hardware counter.
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
     defined(__powerpc__) || defined(__ppc__) || defined(__riscv) ||     \
     defined(_M_IX86) || defined(_M_X64)
-#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1 
-#else 
-#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 0 
-#endif 
- 
-// The following platforms often disable access to the hardware 
-// counter (through a sandbox) even if the underlying hardware has a 
-// usable counter. The CycleTimer interface also requires a *scaled* 
-// CycleClock that runs at atleast 1 MHz. We've found some Android 
-// ARM64 devices where this is not the case, so we disable it by 
-// default on Android ARM64. 
-#if defined(__native_client__) ||                      \ 
-    (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) || \ 
-    (defined(__ANDROID__) && defined(__aarch64__)) 
-#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 0 
-#else 
-#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 1 
-#endif 
- 
-// UnscaledCycleClock is an optional internal feature. 
-// Use "#if ABSL_USE_UNSCALED_CYCLECLOCK" to test for its presence. 
-// Can be overridden at compile-time via -DABSL_USE_UNSCALED_CYCLECLOCK=0|1 
-#if !defined(ABSL_USE_UNSCALED_CYCLECLOCK) 
-#define ABSL_USE_UNSCALED_CYCLECLOCK               \ 
-  (ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION && \ 
-   ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT) 
-#endif 
- 
-#if ABSL_USE_UNSCALED_CYCLECLOCK 
- 
-// This macro can be used to test if UnscaledCycleClock::Frequency() 
-// is NominalCPUFrequency() on a particular platform. 
+#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1
+#else
+#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 0
+#endif
+
+// The following platforms often disable access to the hardware
+// counter (through a sandbox) even if the underlying hardware has a
+// usable counter. The CycleTimer interface also requires a *scaled*
+// CycleClock that runs at atleast 1 MHz. We've found some Android
+// ARM64 devices where this is not the case, so we disable it by
+// default on Android ARM64.
+#if defined(__native_client__) ||                      \
+    (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) || \
+    (defined(__ANDROID__) && defined(__aarch64__))
+#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 0
+#else
+#define ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT 1
+#endif
+
+// UnscaledCycleClock is an optional internal feature.
+// Use "#if ABSL_USE_UNSCALED_CYCLECLOCK" to test for its presence.
+// Can be overridden at compile-time via -DABSL_USE_UNSCALED_CYCLECLOCK=0|1
+#if !defined(ABSL_USE_UNSCALED_CYCLECLOCK)
+#define ABSL_USE_UNSCALED_CYCLECLOCK               \
+  (ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION && \
+   ABSL_USE_UNSCALED_CYCLECLOCK_DEFAULT)
+#endif
+
+#if ABSL_USE_UNSCALED_CYCLECLOCK
+
+// This macro can be used to test if UnscaledCycleClock::Frequency()
+// is NominalCPUFrequency() on a particular platform.
 #if (defined(__i386__) || defined(__x86_64__) || defined(__riscv) || \
      defined(_M_IX86) || defined(_M_X64))
-#define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY 
-#endif 
- 
+#define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
+#endif
+
 namespace y_absl {
 ABSL_NAMESPACE_BEGIN
-namespace time_internal { 
-class UnscaledCycleClockWrapperForGetCurrentTime; 
-}  // namespace time_internal 
- 
-namespace base_internal { 
-class CycleClock; 
-class UnscaledCycleClockWrapperForInitializeFrequency; 
- 
-class UnscaledCycleClock { 
- private: 
-  UnscaledCycleClock() = delete; 
- 
-  // Return the value of a cycle counter that counts at a rate that is 
-  // approximately constant. 
-  static int64_t Now(); 
- 
-  // Return the how much UnscaledCycleClock::Now() increases per second. 
-  // This is not necessarily the core CPU clock frequency. 
-  // It may be the nominal value report by the kernel, rather than a measured 
-  // value. 
-  static double Frequency(); 
- 
+namespace time_internal {
+class UnscaledCycleClockWrapperForGetCurrentTime;
+}  // namespace time_internal
+
+namespace base_internal {
+class CycleClock;
+class UnscaledCycleClockWrapperForInitializeFrequency;
+
+class UnscaledCycleClock {
+ private:
+  UnscaledCycleClock() = delete;
+
+  // Return the value of a cycle counter that counts at a rate that is
+  // approximately constant.
+  static int64_t Now();
+
+  // Return the how much UnscaledCycleClock::Now() increases per second.
+  // This is not necessarily the core CPU clock frequency.
+  // It may be the nominal value report by the kernel, rather than a measured
+  // value.
+  static double Frequency();
+
   // Allowed users
-  friend class base_internal::CycleClock; 
-  friend class time_internal::UnscaledCycleClockWrapperForGetCurrentTime; 
-  friend class base_internal::UnscaledCycleClockWrapperForInitializeFrequency; 
-}; 
- 
-}  // namespace base_internal 
+  friend class base_internal::CycleClock;
+  friend class time_internal::UnscaledCycleClockWrapperForGetCurrentTime;
+  friend class base_internal::UnscaledCycleClockWrapperForInitializeFrequency;
+};
+
+}  // namespace base_internal
 ABSL_NAMESPACE_END
 }  // namespace y_absl
- 
-#endif  // ABSL_USE_UNSCALED_CYCLECLOCK 
- 
-#endif  // ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_ 
+
+#endif  // ABSL_USE_UNSCALED_CYCLECLOCK
+
+#endif  // ABSL_BASE_INTERNAL_UNSCALEDCYCLECLOCK_H_