Enlarge the hierarchy of Abseil-cpp lib

Enlarged the hierarchy of abseil-cpp library

54 files changed, 1194 insertions, 931 deletions

diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/algorithm/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/algorithm/CMakeLists.txt
deleted file mode 100644
index 8fee7e21b4..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/algorithm/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(abseil-cpp-tstring-y_absl-algorithm INTERFACE)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/CMakeLists.txt
index 26bf1b68a8..f8ac36e9bd 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/CMakeLists.txt
@@ -7,24 +7,28 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-base)
-target_compile_options(yabseil-cpp-tstring-y_absl-base PRIVATE
+add_library(abseil-cpp-tstring-y_absl-base)
+target_compile_options(abseil-cpp-tstring-y_absl-base PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-base PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-base PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-base PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-base PUBLIC
   contrib-libs-cxxsupp
   yutil
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
 )
-target_sources(yabseil-cpp-tstring-y_absl-base PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-base PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/cycleclock.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/sysinfo.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/thread_identity.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/unscaledcycleclock.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/CMakeLists.txt
deleted file mode 100644
index 7572dfe88a..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc/CMakeLists.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ybase-internal-low_level_alloc)
-target_compile_options(ybase-internal-low_level_alloc PRIVATE
-  -Wno-everything
-)
-target_include_directories(ybase-internal-low_level_alloc PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ybase-internal-low_level_alloc PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
-)
-target_sources(ybase-internal-low_level_alloc PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/low_level_alloc.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/CMakeLists.txt
deleted file mode 100644
index 22c52adc4d..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging/CMakeLists.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ybase-internal-raw_logging)
-target_compile_options(ybase-internal-raw_logging PRIVATE
-  -Wno-everything
-)
-target_include_directories(ybase-internal-raw_logging PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ybase-internal-raw_logging PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabsl-base-log_severity
-)
-target_sources(ybase-internal-raw_logging PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/raw_logging.cc
-)
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
new file mode 100644
index 0000000000..ad48ddbcee
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.cc
@@ -0,0 +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.
+
+#include "y_absl/base/internal/scoped_set_env.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include <cstdlib>
+
+#include "y_absl/base/internal/raw_logging.h"
+
+namespace y_absl {
+Y_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));
+  Y_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
+Y_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
new file mode 100644
index 0000000000..f414235b28
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/scoped_set_env.h
@@ -0,0 +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 Y_ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
+#define Y_ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
+
+#include <util/generic/string.h>
+
+#include "y_absl/base/config.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+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
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/CMakeLists.txt
deleted file mode 100644
index 8f6c31c88f..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ybase-internal-spinlock_wait)
-target_compile_options(ybase-internal-spinlock_wait PRIVATE
-  -Wno-everything
-)
-target_include_directories(ybase-internal-spinlock_wait PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ybase-internal-spinlock_wait PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-)
-target_sources(ybase-internal-spinlock_wait PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/spinlock_wait.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc
new file mode 100644
index 0000000000..ae1e09f791
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.cc
@@ -0,0 +1,88 @@
+// Copyright 2020 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/strerror.h"
+
+#include <array>
+#include <cerrno>
+#include <cstddef>
+#include <cstdio>
+#include <cstring>
+#include <util/generic/string.h>
+#include <type_traits>
+
+#include "y_absl/base/internal/errno_saver.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+namespace {
+
+const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) {
+#if defined(_WIN32)
+  int rc = strerror_s(buf, buflen, errnum);
+  buf[buflen - 1] = '\0';  // guarantee NUL termination
+  if (rc == 0 && strncmp(buf, "Unknown error", buflen) == 0) *buf = '\0';
+  return buf;
+#else
+  // The type of `ret` is platform-specific; both of these branches must compile
+  // either way but only one will execute on any given platform:
+  auto ret = strerror_r(errnum, buf, buflen);
+  if (std::is_same<decltype(ret), int>::value) {
+    // XSI `strerror_r`; `ret` is `int`:
+    if (ret) *buf = '\0';
+    return buf;
+  } else {
+    // GNU `strerror_r`; `ret` is `char *`:
+    return reinterpret_cast<const char*>(ret);
+  }
+#endif
+}
+
+TString StrErrorInternal(int errnum) {
+  char buf[100];
+  const char* str = StrErrorAdaptor(errnum, buf, sizeof buf);
+  if (*str == '\0') {
+    snprintf(buf, sizeof buf, "Unknown error %d", errnum);
+    str = buf;
+  }
+  return str;
+}
+
+// kSysNerr is the number of errors from a recent glibc. `StrError()` falls back
+// to `StrErrorAdaptor()` if the value is larger than this.
+constexpr int kSysNerr = 135;
+
+std::array<TString, kSysNerr>* NewStrErrorTable() {
+  auto* table = new std::array<TString, kSysNerr>;
+  for (int i = 0; i < static_cast<int>(table->size()); ++i) {
+    (*table)[i] = StrErrorInternal(i);
+  }
+  return table;
+}
+
+}  // namespace
+
+TString StrError(int errnum) {
+  y_absl::base_internal::ErrnoSaver errno_saver;
+  static const auto* table = NewStrErrorTable();
+  if (errnum >= 0 && errnum < static_cast<int>(table->size())) {
+    return (*table)[errnum];
+  }
+  return StrErrorInternal(errnum);
+}
+
+}  // namespace base_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.h b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.h
new file mode 100644
index 0000000000..941c030616
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/strerror.h
@@ -0,0 +1,39 @@
+// Copyright 2020 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 Y_ABSL_BASE_INTERNAL_STRERROR_H_
+#define Y_ABSL_BASE_INTERNAL_STRERROR_H_
+
+#include <util/generic/string.h>
+
+#include "y_absl/base/config.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace base_internal {
+
+// A portable and thread-safe alternative to C89's `strerror`.
+//
+// The C89 specification of `strerror` is not suitable for use in a
+// multi-threaded application as the returned string may be changed by calls to
+// `strerror` from another thread.  The many non-stdlib alternatives differ
+// enough in their names, availability, and semantics to justify this wrapper
+// around them.  `errno` will not be modified by a call to `y_absl::StrError`.
+TString StrError(int errnum);
+
+}  // namespace base_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_BASE_INTERNAL_STRERROR_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/CMakeLists.txt
deleted file mode 100644
index f76d7ce3f4..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate/CMakeLists.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ybase-internal-throw_delegate)
-target_compile_options(ybase-internal-throw_delegate PRIVATE
-  -Wno-everything
-)
-target_include_directories(ybase-internal-throw_delegate PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ybase-internal-throw_delegate PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
-)
-target_sources(ybase-internal-throw_delegate PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/internal/throw_delegate.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity/CMakeLists.txt
deleted file mode 100644
index 14d4ecadd2..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-base-log_severity)
-target_compile_options(yabsl-base-log_severity PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-base-log_severity PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-base-log_severity PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-)
-target_sources(yabsl-base-log_severity PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/base/log_severity.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/city/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/city/CMakeLists.txt
index 6ed91fe706..d7bfa347ff 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/city/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/city/CMakeLists.txt
@@ -7,21 +7,18 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-city)
-target_compile_options(yabseil-cpp-tstring-y_absl-city PRIVATE
+add_library(abseil-cpp-tstring-y_absl-city)
+target_compile_options(abseil-cpp-tstring-y_absl-city PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-city PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-city PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-city PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-city PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
+  abseil-cpp-tstring-y_absl-base
 )
-target_sources(yabseil-cpp-tstring-y_absl-city PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-city PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/city.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/container/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/container/CMakeLists.txt
index 19e2bc893e..3ec3daa2a0 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/container/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/container/CMakeLists.txt
@@ -7,4 +7,29 @@
 
 
 
-add_library(abseil-cpp-tstring-y_absl-container INTERFACE)
+add_library(abseil-cpp-tstring-y_absl-container)
+target_compile_options(abseil-cpp-tstring-y_absl-container PRIVATE
+  -Wno-everything
+)
+target_include_directories(abseil-cpp-tstring-y_absl-container PUBLIC
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
+)
+target_link_libraries(abseil-cpp-tstring-y_absl-container PUBLIC
+  contrib-libs-cxxsupp
+  yutil
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-debugging
+  abseil-cpp-tstring-y_absl-demangle
+  abseil-cpp-tstring-y_absl-hash
+  abseil-cpp-tstring-y_absl-numeric
+  abseil-cpp-tstring-y_absl-profiling
+  abseil-cpp-tstring-y_absl-strings
+  abseil-cpp-tstring-y_absl-synchronization
+  abseil-cpp-tstring-y_absl-time
+  abseil-cpp-tstring-y_absl-types
+)
+target_sources(abseil-cpp-tstring-y_absl-container PRIVATE
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/hashtablez_sampler.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/hashtablez_sampler_force_weak_definition.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/raw_hash_set.cc
+)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/absl_hashtablez_sampler/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/absl_hashtablez_sampler/CMakeLists.txt
deleted file mode 100644
index ec58a48228..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/absl_hashtablez_sampler/CMakeLists.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ycontainer-internal-absl_hashtablez_sampler)
-target_compile_options(ycontainer-internal-absl_hashtablez_sampler PRIVATE
-  -Wno-everything
-)
-target_include_directories(ycontainer-internal-absl_hashtablez_sampler PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ycontainer-internal-absl_hashtablez_sampler PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-)
-target_sources(ycontainer-internal-absl_hashtablez_sampler PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/hashtablez_sampler.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/hashtablez_sampler_force_weak_definition.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/raw_hash_set/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/raw_hash_set/CMakeLists.txt
deleted file mode 100644
index 5cf0ce6ba2..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/raw_hash_set/CMakeLists.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ycontainer-internal-raw_hash_set)
-target_compile_options(ycontainer-internal-raw_hash_set PRIVATE
-  -Wno-everything
-)
-target_include_directories(ycontainer-internal-raw_hash_set PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ycontainer-internal-raw_hash_set PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  ycontainer-internal-absl_hashtablez_sampler
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-hash
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-  abseil-cpp-tstring-y_absl-types
-  yabsl-types-bad_optional_access
-)
-target_sources(ycontainer-internal-raw_hash_set PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/container/internal/raw_hash_set.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/CMakeLists.txt
index 4b3cd7b259..941146d1d1 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/CMakeLists.txt
@@ -7,21 +7,26 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-debugging)
-target_compile_options(yabseil-cpp-tstring-y_absl-debugging PRIVATE
+add_library(abseil-cpp-tstring-y_absl-debugging)
+target_compile_options(abseil-cpp-tstring-y_absl-debugging PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-debugging PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-debugging PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-debugging PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-debugging PUBLIC
   contrib-libs-cxxsupp
   yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
+  abseil-cpp-tstring-y_absl-base
 )
-target_sources(yabseil-cpp-tstring-y_absl-debugging PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-debugging PRIVATE
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/failure_signal_handler.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/internal/address_is_readable.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/internal/elf_mem_image.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/internal/examine_stack.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/internal/vdso_support.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check_disable.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/stacktrace.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/symbolize.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.cc
new file mode 100644
index 0000000000..0ac471b986
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.cc
@@ -0,0 +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.
+
+// Wrappers around lsan_interface functions.
+// When lsan is not linked in, these functions are not available,
+// therefore Abseil code which depends on these functions is conditioned on the
+// definition of LEAK_SANITIZER.
+#include "y_absl/base/attributes.h"
+#include "y_absl/debugging/leak_check.h"
+
+#ifndef LEAK_SANITIZER
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+bool HaveLeakSanitizer() { return false; }
+bool LeakCheckerIsActive() { return false; }
+void DoIgnoreLeak(const void*) { }
+void RegisterLivePointers(const void*, size_t) { }
+void UnRegisterLivePointers(const void*, size_t) { }
+LeakCheckDisabler::LeakCheckDisabler() { }
+LeakCheckDisabler::~LeakCheckDisabler() { }
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#else
+
+#include <sanitizer/lsan_interface.h>
+
+#if Y_ABSL_HAVE_ATTRIBUTE_WEAK
+extern "C" Y_ABSL_ATTRIBUTE_WEAK int __lsan_is_turned_off();
+#endif
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+bool HaveLeakSanitizer() { return true; }
+
+#if Y_ABSL_HAVE_ATTRIBUTE_WEAK
+bool LeakCheckerIsActive() {
+  return !(&__lsan_is_turned_off && __lsan_is_turned_off());
+}
+#else
+bool LeakCheckerIsActive() { return true; }
+#endif
+
+bool FindAndReportLeaks() { return __lsan_do_recoverable_leak_check(); }
+void DoIgnoreLeak(const void* ptr) { __lsan_ignore_object(ptr); }
+void RegisterLivePointers(const void* ptr, size_t size) {
+  __lsan_register_root_region(ptr, size);
+}
+void UnRegisterLivePointers(const void* ptr, size_t size) {
+  __lsan_unregister_root_region(ptr, size);
+}
+LeakCheckDisabler::LeakCheckDisabler() { __lsan_disable(); }
+LeakCheckDisabler::~LeakCheckDisabler() { __lsan_enable(); }
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // LEAK_SANITIZER
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.h b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.h
new file mode 100644
index 0000000000..154fe4805d
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check.h
@@ -0,0 +1,133 @@
+// 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.
+//
+// -----------------------------------------------------------------------------
+// File: leak_check.h
+// -----------------------------------------------------------------------------
+//
+// This file contains functions that affect leak checking behavior within
+// targets built with the LeakSanitizer (LSan), a memory leak detector that is
+// integrated within the AddressSanitizer (ASan) as an additional component, or
+// which can be used standalone. LSan and ASan are included (or can be provided)
+// as additional components for most compilers such as Clang, gcc and MSVC.
+// Note: this leak checking API is not yet supported in MSVC.
+// Leak checking is enabled by default in all ASan builds.
+//
+// See https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer
+//
+// -----------------------------------------------------------------------------
+#ifndef Y_ABSL_DEBUGGING_LEAK_CHECK_H_
+#define Y_ABSL_DEBUGGING_LEAK_CHECK_H_
+
+#include <cstddef>
+
+#include "y_absl/base/config.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+
+// HaveLeakSanitizer()
+//
+// Returns true if a leak-checking sanitizer (either ASan or standalone LSan) is
+// currently built into this target.
+bool HaveLeakSanitizer();
+
+// LeakCheckerIsActive()
+//
+// Returns true if a leak-checking sanitizer (either ASan or standalone LSan) is
+// currently built into this target and is turned on.
+bool LeakCheckerIsActive();
+
+// DoIgnoreLeak()
+//
+// Implements `IgnoreLeak()` below. This function should usually
+// not be called directly; calling `IgnoreLeak()` is preferred.
+void DoIgnoreLeak(const void* ptr);
+
+// IgnoreLeak()
+//
+// Instruct the leak sanitizer to ignore leak warnings on the object referenced
+// by the passed pointer, as well as all heap objects transitively referenced
+// by it. The passed object pointer can point to either the beginning of the
+// object or anywhere within it.
+//
+// Example:
+//
+//   static T* obj = IgnoreLeak(new T(...));
+//
+// If the passed `ptr` does not point to an actively allocated object at the
+// time `IgnoreLeak()` is called, the call is a no-op; if it is actively
+// allocated, leak sanitizer will assume this object is referenced even if
+// there is no actual reference in user memory.
+//
+template <typename T>
+T* IgnoreLeak(T* ptr) {
+  DoIgnoreLeak(ptr);
+  return ptr;
+}
+
+// FindAndReportLeaks()
+//
+// If any leaks are detected, prints a leak report and returns true.  This
+// function may be called repeatedly, and does not affect end-of-process leak
+// checking.
+//
+// Example:
+// if (FindAndReportLeaks()) {
+//   ... diagnostic already printed. Exit with failure code.
+//   exit(1)
+// }
+bool FindAndReportLeaks();
+
+// LeakCheckDisabler
+//
+// This helper class indicates that any heap allocations done in the code block
+// covered by the scoped object, which should be allocated on the stack, will
+// not be reported as leaks. Leak check disabling will occur within the code
+// block and any nested function calls within the code block.
+//
+// Example:
+//
+//   void Foo() {
+//     LeakCheckDisabler disabler;
+//     ... code that allocates objects whose leaks should be ignored ...
+//   }
+//
+// REQUIRES: Destructor runs in same thread as constructor
+class LeakCheckDisabler {
+ public:
+  LeakCheckDisabler();
+  LeakCheckDisabler(const LeakCheckDisabler&) = delete;
+  LeakCheckDisabler& operator=(const LeakCheckDisabler&) = delete;
+  ~LeakCheckDisabler();
+};
+
+// RegisterLivePointers()
+//
+// Registers `ptr[0,size-1]` as pointers to memory that is still actively being
+// referenced and for which leak checking should be ignored. This function is
+// useful if you store pointers in mapped memory, for memory ranges that we know
+// are correct but for which normal analysis would flag as leaked code.
+void RegisterLivePointers(const void* ptr, size_t size);
+
+// UnRegisterLivePointers()
+//
+// Deregisters the pointers previously marked as active in
+// `RegisterLivePointers()`, enabling leak checking of those pointers.
+void UnRegisterLivePointers(const void* ptr, size_t size);
+
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_DEBUGGING_LEAK_CHECK_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check_disable.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check_disable.cc
new file mode 100644
index 0000000000..924d6e3d54
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/leak_check_disable.cc
@@ -0,0 +1,20 @@
+// 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.
+
+// Disable LeakSanitizer when this file is linked in.
+// This function overrides __lsan_is_turned_off from sanitizer/lsan_interface.h
+extern "C" int __lsan_is_turned_off();
+extern "C" int __lsan_is_turned_off() {
+  return 1;
+}
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/stacktrace/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/stacktrace/CMakeLists.txt
deleted file mode 100644
index de152ad47f..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/stacktrace/CMakeLists.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-debugging-stacktrace)
-target_compile_options(yabsl-debugging-stacktrace PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-debugging-stacktrace PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-debugging-stacktrace PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-)
-target_sources(yabsl-debugging-stacktrace PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/stacktrace.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/symbolize/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/symbolize/CMakeLists.txt
deleted file mode 100644
index 5953f62ec8..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/symbolize/CMakeLists.txt
+++ /dev/null
@@ -1,34 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-debugging-symbolize)
-target_compile_options(yabsl-debugging-symbolize PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-debugging-symbolize PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-debugging-symbolize PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-)
-target_sources(yabsl-debugging-symbolize PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/symbolize.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/demangle/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/demangle/CMakeLists.txt
index be77485656..cabd5665b4 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/demangle/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/demangle/CMakeLists.txt
@@ -7,21 +7,18 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-demangle)
-target_compile_options(yabseil-cpp-tstring-y_absl-demangle PRIVATE
+add_library(abseil-cpp-tstring-y_absl-demangle)
+target_compile_options(abseil-cpp-tstring-y_absl-demangle PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-demangle PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-demangle PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-demangle PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-demangle PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
+  abseil-cpp-tstring-y_absl-base
 )
-target_sources(yabseil-cpp-tstring-y_absl-demangle PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-demangle PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/debugging/internal/demangle.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/functional/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/functional/CMakeLists.txt
deleted file mode 100644
index d29cb14fd9..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/functional/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(abseil-cpp-tstring-y_absl-functional INTERFACE)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/hash/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/hash/CMakeLists.txt
index 3507682846..aeef5a67e2 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/hash/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/hash/CMakeLists.txt
@@ -7,31 +7,23 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-hash)
-target_compile_options(yabseil-cpp-tstring-y_absl-hash PRIVATE
+add_library(abseil-cpp-tstring-y_absl-hash)
+target_compile_options(abseil-cpp-tstring-y_absl-hash PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-hash PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-hash PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-hash PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-hash PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-city
-  yabsl-hash-internal
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-city
+  abseil-cpp-tstring-y_absl-numeric
+  abseil-cpp-tstring-y_absl-strings
   abseil-cpp-tstring-y_absl-types
-  yabsl-types-bad_optional_access
-  yabsl-types-bad_variant_access
-  y_absl-types-internal
 )
-target_sources(yabseil-cpp-tstring-y_absl-hash PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-hash PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/hash.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/low_level_hash.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/CMakeLists.txt
deleted file mode 100644
index a4032a712c..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/CMakeLists.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-hash-internal)
-target_compile_options(yabsl-hash-internal PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-hash-internal PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-hash-internal PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-numeric
-)
-target_sources(yabsl-hash-internal PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/hash/internal/low_level_hash.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/meta/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/meta/CMakeLists.txt
index b3005ce529..c8845db2e4 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/meta/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/meta/CMakeLists.txt
@@ -9,5 +9,5 @@
 
 add_library(abseil-cpp-tstring-y_absl-meta INTERFACE)
 target_link_libraries(abseil-cpp-tstring-y_absl-meta INTERFACE
-  yabseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-base
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/numeric/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/numeric/CMakeLists.txt
index f96a127af1..15d41ecc0f 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/numeric/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/numeric/CMakeLists.txt
@@ -7,17 +7,17 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-numeric)
-target_compile_options(yabseil-cpp-tstring-y_absl-numeric PRIVATE
+add_library(abseil-cpp-tstring-y_absl-numeric)
+target_compile_options(abseil-cpp-tstring-y_absl-numeric PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-numeric PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-numeric PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-numeric PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-numeric PUBLIC
   contrib-libs-cxxsupp
   yutil
 )
-target_sources(yabseil-cpp-tstring-y_absl-numeric PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-numeric PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/numeric/int128.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/exponential_biased/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/CMakeLists.txt
index 9795f4fe89..519d4c432b 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/exponential_biased/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/CMakeLists.txt
@@ -7,17 +7,18 @@
 
 
 
-add_library(yprofiling-internal-exponential_biased)
-target_compile_options(yprofiling-internal-exponential_biased PRIVATE
+add_library(abseil-cpp-tstring-y_absl-profiling)
+target_compile_options(abseil-cpp-tstring-y_absl-profiling PRIVATE
   -Wno-everything
 )
-target_include_directories(yprofiling-internal-exponential_biased PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-profiling PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yprofiling-internal-exponential_biased PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-profiling PUBLIC
   contrib-libs-cxxsupp
   yutil
 )
-target_sources(yprofiling-internal-exponential_biased PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-profiling PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/exponential_biased.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.cc
new file mode 100644
index 0000000000..03892bfa3e
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.cc
@@ -0,0 +1,53 @@
+// 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/profiling/internal/periodic_sampler.h"
+
+#include <atomic>
+
+#include "y_absl/profiling/internal/exponential_biased.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace profiling_internal {
+
+int64_t PeriodicSamplerBase::GetExponentialBiased(int period) noexcept {
+  return rng_.GetStride(period);
+}
+
+bool PeriodicSamplerBase::SubtleConfirmSample() noexcept {
+  int current_period = period();
+
+  // Deal with period case 0 (always off) and 1 (always on)
+  if (Y_ABSL_PREDICT_FALSE(current_period < 2)) {
+    stride_ = 0;
+    return current_period == 1;
+  }
+
+  // Check if this is the first call to Sample()
+  if (Y_ABSL_PREDICT_FALSE(stride_ == 1)) {
+    stride_ = static_cast<uint64_t>(-GetExponentialBiased(current_period));
+    if (static_cast<int64_t>(stride_) < -1) {
+      ++stride_;
+      return false;
+    }
+  }
+
+  stride_ = static_cast<uint64_t>(-GetExponentialBiased(current_period));
+  return true;
+}
+
+}  // namespace profiling_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.h b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.h
new file mode 100644
index 0000000000..6faa2d7566
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/profiling/internal/periodic_sampler.h
@@ -0,0 +1,211 @@
+// 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 Y_ABSL_PROFILING_INTERNAL_PERIODIC_SAMPLER_H_
+#define Y_ABSL_PROFILING_INTERNAL_PERIODIC_SAMPLER_H_
+
+#include <stdint.h>
+
+#include <atomic>
+
+#include "y_absl/base/optimization.h"
+#include "y_absl/profiling/internal/exponential_biased.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace profiling_internal {
+
+// PeriodicSamplerBase provides the basic period sampler implementation.
+//
+// This is the base class for the templated PeriodicSampler class, which holds
+// a global std::atomic value identified by a user defined tag, such that
+// each specific PeriodSampler implementation holds its own global period.
+//
+// PeriodicSamplerBase is thread-compatible except where stated otherwise.
+class PeriodicSamplerBase {
+ public:
+  // PeriodicSamplerBase is trivial / copyable / movable / destructible.
+  PeriodicSamplerBase() = default;
+  PeriodicSamplerBase(PeriodicSamplerBase&&) = default;
+  PeriodicSamplerBase(const PeriodicSamplerBase&) = default;
+
+  // Returns true roughly once every `period` calls. This is established by a
+  // randomly picked `stride` that is counted down on each call to `Sample`.
+  // This stride is picked such that the probability of `Sample()` returning
+  // true is 1 in `period`.
+  inline bool Sample() noexcept;
+
+  // The below methods are intended for optimized use cases where the
+  // size of the inlined fast path code is highly important. Applications
+  // should use the `Sample()` method unless they have proof that their
+  // specific use case requires the optimizations offered by these methods.
+  //
+  // An example of such a use case is SwissTable sampling. All sampling checks
+  // are in inlined SwissTable methods, and the number of call sites is huge.
+  // In this case, the inlined code size added to each translation unit calling
+  // SwissTable methods is non-trivial.
+  //
+  // The `SubtleMaybeSample()` function spuriously returns true even if the
+  // function should not be sampled, applications MUST match each call to
+  // 'SubtleMaybeSample()' returning true with a `SubtleConfirmSample()` call,
+  // and use the result of the latter as the sampling decision.
+  // In other words: the code should logically be equivalent to:
+  //
+  //    if (SubtleMaybeSample() && SubtleConfirmSample()) {
+  //      // Sample this call
+  //    }
+  //
+  // In the 'inline-size' optimized case, the `SubtleConfirmSample()` call can
+  // be placed out of line, for example, the typical use case looks as follows:
+  //
+  //   // --- frobber.h -----------
+  //   void FrobberSampled();
+  //
+  //   inline void FrobberImpl() {
+  //     // ...
+  //   }
+  //
+  //   inline void Frobber() {
+  //     if (Y_ABSL_PREDICT_FALSE(sampler.SubtleMaybeSample())) {
+  //       FrobberSampled();
+  //     } else {
+  //       FrobberImpl();
+  //     }
+  //   }
+  //
+  //   // --- frobber.cc -----------
+  //   void FrobberSampled() {
+  //     if (!sampler.SubtleConfirmSample())) {
+  //       // Spurious false positive
+  //       FrobberImpl();
+  //       return;
+  //     }
+  //
+  //     // Sampled execution
+  //     // ...
+  //   }
+  inline bool SubtleMaybeSample() noexcept;
+  bool SubtleConfirmSample() noexcept;
+
+ protected:
+  // We explicitly don't use a virtual destructor as this class is never
+  // virtually destroyed, and it keeps the class trivial, which avoids TLS
+  // prologue and epilogue code for our TLS instances.
+  ~PeriodicSamplerBase() = default;
+
+  // Returns the next stride for our sampler.
+  // This function is virtual for testing purposes only.
+  virtual int64_t GetExponentialBiased(int period) noexcept;
+
+ private:
+  // Returns the current period of this sampler. Thread-safe.
+  virtual int period() const noexcept = 0;
+
+  // Keep and decrement stride_ as an unsigned integer, but compare the value
+  // to zero casted as a signed int. clang and msvc do not create optimum code
+  // if we use signed for the combined decrement and sign comparison.
+  //
+  // Below 3 alternative options, all compiles generate the best code
+  // using the unsigned increment <---> signed int comparison option.
+  //
+  // Option 1:
+  //   int64_t stride_;
+  //   if (Y_ABSL_PREDICT_TRUE(++stride_ < 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/R5MzzA
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/z7NZAt
+  //   Clang x64 (BAD): https://gcc.godbolt.org/z/t4gPsd
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/rE6s8W
+  //   MSVC  x64 (OK) : https://gcc.godbolt.org/z/ARMXqS
+  //
+  // Option 2:
+  //   int64_t stride_ = 0;
+  //   if (Y_ABSL_PREDICT_TRUE(--stride_ >= 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/jSQxYK
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/VJdYaA
+  //   Clang x64 (BAD): https://gcc.godbolt.org/z/Xm4NjX
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/4snaFd
+  //   MSVC  x64 (BAD): https://gcc.godbolt.org/z/BgnEKE
+  //
+  // Option 3:
+  //   uint64_t stride_;
+  //   if (Y_ABSL_PREDICT_TRUE(static_cast<int64_t>(++stride_) < 0)) { ... }
+  //
+  //   GCC   x64 (OK) : https://gcc.godbolt.org/z/bFbfPy
+  //   GCC   ppc (OK) : https://gcc.godbolt.org/z/S9KkUE
+  //   Clang x64 (OK) : https://gcc.godbolt.org/z/UYzRb4
+  //   ICC   x64 (OK) : https://gcc.godbolt.org/z/ptTNfD
+  //   MSVC  x64 (OK) : https://gcc.godbolt.org/z/76j4-5
+  uint64_t stride_ = 0;
+  y_absl::profiling_internal::ExponentialBiased rng_;
+};
+
+inline bool PeriodicSamplerBase::SubtleMaybeSample() noexcept {
+  // See comments on `stride_` for the unsigned increment / signed compare.
+  if (Y_ABSL_PREDICT_TRUE(static_cast<int64_t>(++stride_) < 0)) {
+    return false;
+  }
+  return true;
+}
+
+inline bool PeriodicSamplerBase::Sample() noexcept {
+  return Y_ABSL_PREDICT_FALSE(SubtleMaybeSample()) ? SubtleConfirmSample()
+                                                 : false;
+}
+
+// PeriodicSampler is a concreted periodic sampler implementation.
+// The user provided Tag identifies the implementation, and is required to
+// isolate the global state of this instance from other instances.
+//
+// Typical use case:
+//
+//   struct HashTablezTag {};
+//   thread_local PeriodicSampler sampler;
+//
+//   void HashTableSamplingLogic(...) {
+//     if (sampler.Sample()) {
+//       HashTableSlowSamplePath(...);
+//     }
+//   }
+//
+template <typename Tag, int default_period = 0>
+class PeriodicSampler final : public PeriodicSamplerBase {
+ public:
+  ~PeriodicSampler() = default;
+
+  int period() const noexcept final {
+    return period_.load(std::memory_order_relaxed);
+  }
+
+  // Sets the global period for this sampler. Thread-safe.
+  // Setting a period of 0 disables the sampler, i.e., every call to Sample()
+  // will return false. Setting a period of 1 puts the sampler in 'always on'
+  // mode, i.e., every call to Sample() returns true.
+  static void SetGlobalPeriod(int period) {
+    period_.store(period, std::memory_order_relaxed);
+  }
+
+ private:
+  static std::atomic<int> period_;
+};
+
+template <typename Tag, int default_period>
+std::atomic<int> PeriodicSampler<Tag, default_period>::period_(default_period);
+
+}  // namespace profiling_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_PROFILING_INTERNAL_PERIODIC_SAMPLER_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/status/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/status/CMakeLists.txt
index 027ae28b9a..cb1f4e1579 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/status/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/status/CMakeLists.txt
@@ -7,44 +7,27 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-status)
-target_compile_options(yabseil-cpp-tstring-y_absl-status PRIVATE
+add_library(abseil-cpp-tstring-y_absl-status)
+target_compile_options(abseil-cpp-tstring-y_absl-status PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-status PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-status PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-status PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-status PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-strings
-  yabsl-strings-cord
-  ystrings-internal-absl_cord_internal
-  ystrings-internal-absl_strings_internal
-  ystrings-internal-cordz_functions
-  ystrings-internal-cordz_handle
-  ystrings-internal-cordz_info
-  ystrings-internal-str_format
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-  yabsl-types-bad_optional_access
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-debugging
+  abseil-cpp-tstring-y_absl-demangle
+  abseil-cpp-tstring-y_absl-numeric
+  abseil-cpp-tstring-y_absl-profiling
+  abseil-cpp-tstring-y_absl-strings
+  abseil-cpp-tstring-y_absl-synchronization
+  abseil-cpp-tstring-y_absl-time
+  abseil-cpp-tstring-y_absl-types
 )
-target_sources(yabseil-cpp-tstring-y_absl-status PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-status PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/status/status.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/status/status_payload_printer.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/status/statusor/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/status/statusor/CMakeLists.txt
deleted file mode 100644
index 04386d7699..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/status/statusor/CMakeLists.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-status-statusor)
-target_compile_options(yabsl-status-statusor PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-status-statusor PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-status-statusor PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-status
-  yabseil-cpp-tstring-y_absl-strings
-  yabsl-strings-cord
-  ystrings-internal-absl_cord_internal
-  ystrings-internal-absl_strings_internal
-  ystrings-internal-cordz_functions
-  ystrings-internal-cordz_handle
-  ystrings-internal-cordz_info
-  ystrings-internal-str_format
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-  yabsl-types-bad_optional_access
-  yabsl-types-bad_variant_access
-)
-target_sources(yabsl-status-statusor PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/status/statusor.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/CMakeLists.txt
index a5df46fd83..c14b657da5 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/CMakeLists.txt
@@ -7,31 +7,47 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-strings)
-target_compile_options(yabseil-cpp-tstring-y_absl-strings PRIVATE
+add_library(abseil-cpp-tstring-y_absl-strings)
+target_compile_options(abseil-cpp-tstring-y_absl-strings PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-strings PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-strings PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-strings PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-strings PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-numeric
-  ystrings-internal-absl_strings_internal
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-numeric
 )
-target_sources(yabseil-cpp-tstring-y_absl-strings PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-strings PRIVATE
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/status/statusor.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/ascii.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/charconv.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/cord.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/escaping.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/charconv_bigint.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/charconv_parse.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_internal.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree_navigator.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree_reader.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_consume.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_ring.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_functions.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_handle.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_info.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/escaping.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/memutil.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/ostringstream.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/arg.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/bind.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/extension.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/float_conversion.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/output.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/parser.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/utf8.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/match.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/numbers.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/str_cat.cc
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/cord/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/cord/CMakeLists.txt
deleted file mode 100644
index ded7f22d4a..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/cord/CMakeLists.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-strings-cord)
-target_compile_options(yabsl-strings-cord PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-strings-cord PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-strings-cord PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  abseil-cpp-tstring-y_absl-algorithm
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  abseil-cpp-tstring-y_absl-container
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  abseil-cpp-tstring-y_absl-functional
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_cord_internal
-  ystrings-internal-absl_strings_internal
-  ystrings-internal-cordz_functions
-  ystrings-internal-cordz_handle
-  ystrings-internal-cordz_info
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-  abseil-cpp-tstring-y_absl-types
-  yabsl-types-bad_optional_access
-  abseil-cpp-tstring-y_absl-utility
-)
-target_sources(yabsl-strings-cord PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/cord.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_cord_internal/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_cord_internal/CMakeLists.txt
deleted file mode 100644
index b030c3d1cd..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_cord_internal/CMakeLists.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-absl_cord_internal)
-target_compile_options(ystrings-internal-absl_cord_internal PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-absl_cord_internal PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-absl_cord_internal PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-)
-target_sources(ystrings-internal-absl_cord_internal PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_internal.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree_navigator.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_btree_reader.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_consume.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cord_rep_ring.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_strings_internal/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_strings_internal/CMakeLists.txt
deleted file mode 100644
index d30ee76373..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/absl_strings_internal/CMakeLists.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-absl_strings_internal)
-target_compile_options(ystrings-internal-absl_strings_internal PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-absl_strings_internal PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-absl_strings_internal PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
-)
-target_sources(ystrings-internal-absl_strings_internal PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/escaping.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/ostringstream.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/utf8.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_functions/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_functions/CMakeLists.txt
deleted file mode 100644
index b0d36a3db0..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_functions/CMakeLists.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-cordz_functions)
-target_compile_options(ystrings-internal-cordz_functions PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-cordz_functions PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-cordz_functions PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
-  yprofiling-internal-exponential_biased
-)
-target_sources(ystrings-internal-cordz_functions PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_functions.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_handle/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_handle/CMakeLists.txt
deleted file mode 100644
index 2e409ccadd..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_handle/CMakeLists.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-cordz_handle)
-target_compile_options(ystrings-internal-cordz_handle PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-cordz_handle PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-cordz_handle PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-)
-target_sources(ystrings-internal-cordz_handle PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_handle.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_info/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_info/CMakeLists.txt
deleted file mode 100644
index c632857444..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_info/CMakeLists.txt
+++ /dev/null
@@ -1,45 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-cordz_info)
-target_compile_options(ystrings-internal-cordz_info PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-cordz_info PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-cordz_info PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yprofiling-internal-exponential_biased
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_cord_internal
-  ystrings-internal-absl_strings_internal
-  ystrings-internal-cordz_functions
-  ystrings-internal-cordz_handle
-  yabseil-cpp-tstring-y_absl-synchronization
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
-)
-target_sources(ystrings-internal-cordz_info PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_info.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.cc
new file mode 100644
index 0000000000..fda536c7f4
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.cc
@@ -0,0 +1,64 @@
+// 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/strings/internal/cordz_sample_token.h"
+
+#include "y_absl/base/config.h"
+#include "y_absl/strings/internal/cordz_handle.h"
+#include "y_absl/strings/internal/cordz_info.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+CordzSampleToken::Iterator& CordzSampleToken::Iterator::operator++() {
+  if (current_) {
+    current_ = current_->Next(*token_);
+  }
+  return *this;
+}
+
+CordzSampleToken::Iterator CordzSampleToken::Iterator::operator++(int) {
+  Iterator it(*this);
+  operator++();
+  return it;
+}
+
+bool operator==(const CordzSampleToken::Iterator& lhs,
+                const CordzSampleToken::Iterator& rhs) {
+  return lhs.current_ == rhs.current_ &&
+         (lhs.current_ == nullptr || lhs.token_ == rhs.token_);
+}
+
+bool operator!=(const CordzSampleToken::Iterator& lhs,
+                const CordzSampleToken::Iterator& rhs) {
+  return !(lhs == rhs);
+}
+
+CordzSampleToken::Iterator::reference CordzSampleToken::Iterator::operator*()
+    const {
+  return *current_;
+}
+
+CordzSampleToken::Iterator::pointer CordzSampleToken::Iterator::operator->()
+    const {
+  return current_;
+}
+
+CordzSampleToken::Iterator::Iterator(const CordzSampleToken* token)
+    : token_(token), current_(CordzInfo::Head(*token)) {}
+
+}  // namespace cord_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.h b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.h
new file mode 100644
index 0000000000..8ef2f64dc6
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/cordz_sample_token.h
@@ -0,0 +1,97 @@
+// 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/config.h"
+#include "y_absl/strings/internal/cordz_handle.h"
+#include "y_absl/strings/internal/cordz_info.h"
+
+#ifndef Y_ABSL_STRINGS_CORDZ_SAMPLE_TOKEN_H_
+#define Y_ABSL_STRINGS_CORDZ_SAMPLE_TOKEN_H_
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+// The existence of a CordzSampleToken guarantees that a reader can traverse the
+// global_cordz_infos_head linked-list without needing to hold a mutex. When a
+// CordzSampleToken exists, all CordzInfo objects that would be destroyed are
+// instead appended to a deletion queue. When the CordzSampleToken is destroyed,
+// it will also clean up any of these CordzInfo objects.
+//
+// E.g., ST are CordzSampleToken objects and CH are CordzHandle objects.
+//   ST1 <- CH1 <- CH2 <- ST2 <- CH3 <- global_delete_queue_tail
+//
+// This list tracks that CH1 and CH2 were created after ST1, so the thread
+// holding ST1 might have a referece to CH1, CH2, ST2, and CH3. However, ST2 was
+// created later, so the thread holding the ST2 token cannot have a reference to
+// ST1, CH1, or CH2. If ST1 is cleaned up first, that thread will delete ST1,
+// CH1, and CH2. If instead ST2 is cleaned up first, that thread will only
+// delete ST2.
+//
+// If ST1 is cleaned up first, the new list will be:
+//   ST2 <- CH3 <- global_delete_queue_tail
+//
+// If ST2 is cleaned up first, the new list will be:
+//   ST1 <- CH1 <- CH2 <- CH3 <- global_delete_queue_tail
+//
+// All new CordzHandle objects are appended to the list, so if a new thread
+// comes along before either ST1 or ST2 are cleaned up, the new list will be:
+//   ST1 <- CH1 <- CH2 <- ST2 <- CH3 <- ST3 <- global_delete_queue_tail
+//
+// A thread must hold the global_delete_queue_mu mutex whenever it's altering
+// this list.
+//
+// It is safe for thread that holds a CordzSampleToken to read
+// global_cordz_infos at any time since the objects it is able to retrieve will
+// not be deleted while the CordzSampleToken exists.
+class CordzSampleToken : public CordzSnapshot {
+ public:
+  class Iterator {
+   public:
+    using iterator_category = std::input_iterator_tag;
+    using value_type = const CordzInfo&;
+    using difference_type = ptrdiff_t;
+    using pointer = const CordzInfo*;
+    using reference = value_type;
+
+    Iterator() = default;
+
+    Iterator& operator++();
+    Iterator operator++(int);
+    friend bool operator==(const Iterator& lhs, const Iterator& rhs);
+    friend bool operator!=(const Iterator& lhs, const Iterator& rhs);
+    reference operator*() const;
+    pointer operator->() const;
+
+   private:
+    friend class CordzSampleToken;
+    explicit Iterator(const CordzSampleToken* token);
+
+    const CordzSampleToken* token_ = nullptr;
+    pointer current_ = nullptr;
+  };
+
+  CordzSampleToken() = default;
+  CordzSampleToken(const CordzSampleToken&) = delete;
+  CordzSampleToken& operator=(const CordzSampleToken&) = delete;
+
+  Iterator begin() { return Iterator(this); }
+  Iterator end() { return Iterator(); }
+};
+
+}  // namespace cord_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_STRINGS_CORDZ_SAMPLE_TOKEN_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/CMakeLists.txt
deleted file mode 100644
index 8d9dc3373c..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/CMakeLists.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(ystrings-internal-str_format)
-target_compile_options(ystrings-internal-str_format PRIVATE
-  -Wno-everything
-)
-target_include_directories(ystrings-internal-str_format PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(ystrings-internal-str_format PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-)
-target_sources(ystrings-internal-str_format PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/arg.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/bind.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/extension.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/float_conversion.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/output.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/strings/internal/str_format/parser.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/CMakeLists.txt
index 3cb09caec8..00af2c9260 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/CMakeLists.txt
@@ -7,38 +7,28 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-synchronization)
-target_compile_options(yabseil-cpp-tstring-y_absl-synchronization PRIVATE
+add_library(abseil-cpp-tstring-y_absl-synchronization)
+target_compile_options(abseil-cpp-tstring-y_absl-synchronization PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-synchronization PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-synchronization PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-synchronization PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-synchronization PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-debugging
-  yabsl-debugging-stacktrace
-  yabsl-debugging-symbolize
-  yabseil-cpp-tstring-y_absl-demangle
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-  yabsl-synchronization-internal
-  yabseil-cpp-tstring-y_absl-time
-  yabsl-time-civil_time
-  yabsl-time-time_zone
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-debugging
+  abseil-cpp-tstring-y_absl-demangle
+  abseil-cpp-tstring-y_absl-numeric
+  abseil-cpp-tstring-y_absl-strings
+  abseil-cpp-tstring-y_absl-time
 )
-target_sources(yabseil-cpp-tstring-y_absl-synchronization PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-synchronization PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/barrier.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/blocking_counter.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/create_thread_identity.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/graphcycles.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/per_thread_sem.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/waiter.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/mutex.cc
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/CMakeLists.txt
deleted file mode 100644
index e6c2391a88..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/CMakeLists.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-synchronization-internal)
-target_compile_options(yabsl-synchronization-internal PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-synchronization-internal PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-synchronization-internal PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-low_level_alloc
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  yabsl-base-log_severity
-)
-target_sources(yabsl-synchronization-internal PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/synchronization/internal/graphcycles.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/time/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/time/CMakeLists.txt
index 75a6461a78..0cceb64e60 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/time/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/time/CMakeLists.txt
@@ -7,31 +7,34 @@
 
 
 
-add_library(yabseil-cpp-tstring-y_absl-time)
-target_compile_options(yabseil-cpp-tstring-y_absl-time PRIVATE
+add_library(abseil-cpp-tstring-y_absl-time)
+target_compile_options(abseil-cpp-tstring-y_absl-time PRIVATE
   -Wno-everything
 )
-target_include_directories(yabseil-cpp-tstring-y_absl-time PUBLIC
+target_include_directories(abseil-cpp-tstring-y_absl-time PUBLIC
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
 )
-target_link_libraries(yabseil-cpp-tstring-y_absl-time PUBLIC
+target_link_libraries(abseil-cpp-tstring-y_absl-time PUBLIC
   contrib-libs-cxxsupp
   yutil
-  yabseil-cpp-tstring-y_absl-base
-  ybase-internal-raw_logging
-  ybase-internal-spinlock_wait
-  ybase-internal-throw_delegate
-  yabsl-base-log_severity
-  yabseil-cpp-tstring-y_absl-numeric
-  yabseil-cpp-tstring-y_absl-strings
-  ystrings-internal-absl_strings_internal
-  yabsl-time-civil_time
-  yabsl-time-time_zone
+  abseil-cpp-tstring-y_absl-base
+  abseil-cpp-tstring-y_absl-numeric
+  abseil-cpp-tstring-y_absl-strings
 )
-target_sources(yabseil-cpp-tstring-y_absl-time PRIVATE
+target_sources(abseil-cpp-tstring-y_absl-time PRIVATE
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/civil_time.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/clock.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/duration.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/format.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/civil_time_detail.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_fixed.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_format.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_if.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_impl.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_info.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_libc.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_lookup.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_posix.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/zone_info_source.cc
   ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/time.cc
 )
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/time/civil_time/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/time/civil_time/CMakeLists.txt
deleted file mode 100644
index a0d36c0e89..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/time/civil_time/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-time-civil_time)
-target_compile_options(yabsl-time-civil_time PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-time-civil_time PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-time-civil_time PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-)
-target_sources(yabsl-time-civil_time PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/civil_time_detail.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/time/time_zone/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/time/time_zone/CMakeLists.txt
deleted file mode 100644
index d14b8cc14c..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/time/time_zone/CMakeLists.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-time-time_zone)
-target_compile_options(yabsl-time-time_zone PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-time-time_zone PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-time-time_zone PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-)
-target_sources(yabsl-time-time_zone PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_fixed.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_format.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_if.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_impl.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_info.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_libc.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_lookup.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/time_zone_posix.cc
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/time/internal/cctz/src/zone_info_source.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/types/CMakeLists.txt
index 885607e13e..22e18b5ded 100644
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/types/CMakeLists.txt
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/types/CMakeLists.txt
@@ -7,4 +7,20 @@
 
 
 
-add_library(abseil-cpp-tstring-y_absl-types INTERFACE)
+add_library(abseil-cpp-tstring-y_absl-types)
+target_compile_options(abseil-cpp-tstring-y_absl-types PRIVATE
+  -Wno-everything
+)
+target_include_directories(abseil-cpp-tstring-y_absl-types PUBLIC
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
+)
+target_link_libraries(abseil-cpp-tstring-y_absl-types PUBLIC
+  contrib-libs-cxxsupp
+  yutil
+  abseil-cpp-tstring-y_absl-base
+)
+target_sources(abseil-cpp-tstring-y_absl-types PRIVATE
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_optional_access.cc
+  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_variant_access.cc
+)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.cc b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.cc
new file mode 100644
index 0000000000..14ed288ece
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.cc
@@ -0,0 +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.
+
+#include "y_absl/types/bad_any_cast.h"
+
+#ifndef Y_ABSL_USES_STD_ANY
+
+#include <cstdlib>
+
+#include "y_absl/base/config.h"
+#include "y_absl/base/internal/raw_logging.h"
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+
+bad_any_cast::~bad_any_cast() = default;
+
+const char* bad_any_cast::what() const noexcept { return "Bad any cast"; }
+
+namespace any_internal {
+
+void ThrowBadAnyCast() {
+#ifdef Y_ABSL_HAVE_EXCEPTIONS
+  throw bad_any_cast();
+#else
+  Y_ABSL_RAW_LOG(FATAL, "Bad any cast");
+  std::abort();
+#endif
+}
+
+}  // namespace any_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_USES_STD_ANY
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.h b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.h
new file mode 100644
index 0000000000..a459f8c272
--- /dev/null
+++ b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_any_cast.h
@@ -0,0 +1,75 @@
+// 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.
+//
+// -----------------------------------------------------------------------------
+// bad_any_cast.h
+// -----------------------------------------------------------------------------
+//
+// This header file defines the `y_absl::bad_any_cast` type.
+
+#ifndef Y_ABSL_TYPES_BAD_ANY_CAST_H_
+#define Y_ABSL_TYPES_BAD_ANY_CAST_H_
+
+#include <typeinfo>
+
+#include "y_absl/base/config.h"
+
+#ifdef Y_ABSL_USES_STD_ANY
+
+#include <any>
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+using std::bad_any_cast;
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#else  // Y_ABSL_USES_STD_ANY
+
+namespace y_absl {
+Y_ABSL_NAMESPACE_BEGIN
+
+// -----------------------------------------------------------------------------
+// bad_any_cast
+// -----------------------------------------------------------------------------
+//
+// An `y_absl::bad_any_cast` type is an exception type that is thrown when
+// failing to successfully cast the return value of an `y_absl::any` object.
+//
+// Example:
+//
+//   auto a = y_absl::any(65);
+//   y_absl::any_cast<int>(a);         // 65
+//   try {
+//     y_absl::any_cast<char>(a);
+//   } catch(const y_absl::bad_any_cast& e) {
+//     std::cout << "Bad any cast: " << e.what() << '\n';
+//   }
+class bad_any_cast : public std::bad_cast {
+ public:
+  ~bad_any_cast() override;
+  const char* what() const noexcept override;
+};
+
+namespace any_internal {
+
+[[noreturn]] void ThrowBadAnyCast();
+
+}  // namespace any_internal
+Y_ABSL_NAMESPACE_END
+}  // namespace y_absl
+
+#endif  // Y_ABSL_USES_STD_ANY
+
+#endif  // Y_ABSL_TYPES_BAD_ANY_CAST_H_
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_optional_access/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_optional_access/CMakeLists.txt
deleted file mode 100644
index b6de1cd96a..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_optional_access/CMakeLists.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-types-bad_optional_access)
-target_compile_options(yabsl-types-bad_optional_access PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-types-bad_optional_access PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-types-bad_optional_access PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
-)
-target_sources(yabsl-types-bad_optional_access PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_optional_access.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_variant_access/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_variant_access/CMakeLists.txt
deleted file mode 100644
index 44ead19328..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_variant_access/CMakeLists.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(yabsl-types-bad_variant_access)
-target_compile_options(yabsl-types-bad_variant_access PRIVATE
-  -Wno-everything
-)
-target_include_directories(yabsl-types-bad_variant_access PUBLIC
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring
-)
-target_link_libraries(yabsl-types-bad_variant_access PUBLIC
-  contrib-libs-cxxsupp
-  yutil
-  ybase-internal-raw_logging
-  yabsl-base-log_severity
-)
-target_sources(yabsl-types-bad_variant_access PRIVATE
-  ${CMAKE_SOURCE_DIR}/contrib/restricted/abseil-cpp-tstring/y_absl/types/bad_variant_access.cc
-)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/types/internal/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/types/internal/CMakeLists.txt
deleted file mode 100644
index 7047870733..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/types/internal/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(y_absl-types-internal INTERFACE)
diff --git a/contrib/restricted/abseil-cpp-tstring/y_absl/utility/CMakeLists.txt b/contrib/restricted/abseil-cpp-tstring/y_absl/utility/CMakeLists.txt
deleted file mode 100644
index ec6db3764b..0000000000
--- a/contrib/restricted/abseil-cpp-tstring/y_absl/utility/CMakeLists.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-
-# This file was gererated by the build system used internally in the Yandex monorepo.
-# Only simple modifications are allowed (adding source-files to targets, adding simple properties
-# like target_include_directories). These modifications will be ported to original
-# ya.make files by maintainers. Any complex modifications which can't be ported back to the
-# original buildsystem will not be accepted.
-
-
-
-add_library(abseil-cpp-tstring-y_absl-utility INTERFACE)