Restoring authorship annotation for Andrey Khalyavin <[email protected]>. Commit 2 of 2.

1 files changed, 520 insertions, 520 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/__mutex_base b/contrib/libs/cxxsupp/libcxx/include/__mutex_base
index 57a746cbc7a..da2967164a6 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__mutex_base
+++ b/contrib/libs/cxxsupp/libcxx/include/__mutex_base
@@ -1,527 +1,527 @@
-// -*- C++ -*- 
-//===----------------------------------------------------------------------===// 
-// 
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-// 
-//===----------------------------------------------------------------------===// 
- 
-#ifndef _LIBCPP___MUTEX_BASE 
-#define _LIBCPP___MUTEX_BASE 
- 
-#include <__config> 
-#include <__threading_support> 
-#include <chrono> 
-#include <system_error> 
-#include <time.h> 
- 
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 
-#pragma GCC system_header 
-#endif 
- 
-_LIBCPP_PUSH_MACROS 
-#include <__undef_macros> 
- 
- 
-_LIBCPP_BEGIN_NAMESPACE_STD 
- 
-#ifndef _LIBCPP_HAS_NO_THREADS 
- 
-class _LIBCPP_TYPE_VIS _LIBCPP_THREAD_SAFETY_ANNOTATION(capability("mutex")) mutex 
-{ 
-    __libcpp_mutex_t __m_ = _LIBCPP_MUTEX_INITIALIZER; 
- 
-public: 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR mutex() = default; 
- 
-    mutex(const mutex&) = delete; 
-    mutex& operator=(const mutex&) = delete; 
- 
-#if defined(_LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION) 
-    ~mutex() = default; 
-#else 
-    ~mutex() _NOEXCEPT; 
-#endif 
- 
-    void lock() _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability()); 
-    bool try_lock() _NOEXCEPT _LIBCPP_THREAD_SAFETY_ANNOTATION(try_acquire_capability(true)); 
-    void unlock() _NOEXCEPT _LIBCPP_THREAD_SAFETY_ANNOTATION(release_capability()); 
- 
-    typedef __libcpp_mutex_t* native_handle_type; 
-    _LIBCPP_INLINE_VISIBILITY native_handle_type native_handle() {return &__m_;} 
-}; 
- 
-static_assert(is_nothrow_default_constructible<mutex>::value, 
-              "the default constructor for std::mutex must be nothrow"); 
- 
-struct _LIBCPP_TYPE_VIS defer_lock_t { explicit defer_lock_t() = default; }; 
-struct _LIBCPP_TYPE_VIS try_to_lock_t { explicit try_to_lock_t() = default; }; 
-struct _LIBCPP_TYPE_VIS adopt_lock_t { explicit adopt_lock_t() = default; }; 
- 
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___MUTEX_BASE
+#define _LIBCPP___MUTEX_BASE
+
+#include <__config>
+#include <__threading_support>
+#include <chrono>
+#include <system_error>
+#include <time.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+class _LIBCPP_TYPE_VIS _LIBCPP_THREAD_SAFETY_ANNOTATION(capability("mutex")) mutex
+{
+    __libcpp_mutex_t __m_ = _LIBCPP_MUTEX_INITIALIZER;
+
+public:
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR mutex() = default;
+
+    mutex(const mutex&) = delete;
+    mutex& operator=(const mutex&) = delete;
+
+#if defined(_LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION)
+    ~mutex() = default;
+#else
+    ~mutex() _NOEXCEPT;
+#endif
+
+    void lock() _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability());
+    bool try_lock() _NOEXCEPT _LIBCPP_THREAD_SAFETY_ANNOTATION(try_acquire_capability(true));
+    void unlock() _NOEXCEPT _LIBCPP_THREAD_SAFETY_ANNOTATION(release_capability());
+
+    typedef __libcpp_mutex_t* native_handle_type;
+    _LIBCPP_INLINE_VISIBILITY native_handle_type native_handle() {return &__m_;}
+};
+
+static_assert(is_nothrow_default_constructible<mutex>::value,
+              "the default constructor for std::mutex must be nothrow");
+
+struct _LIBCPP_TYPE_VIS defer_lock_t { explicit defer_lock_t() = default; };
+struct _LIBCPP_TYPE_VIS try_to_lock_t { explicit try_to_lock_t() = default; };
+struct _LIBCPP_TYPE_VIS adopt_lock_t { explicit adopt_lock_t() = default; };
+
 #if defined(_LIBCPP_CXX03_LANG) || defined(_LIBCPP_BUILDING_LIBRARY)
- 
+
 extern _LIBCPP_EXPORTED_FROM_ABI const defer_lock_t  defer_lock;
 extern _LIBCPP_EXPORTED_FROM_ABI const try_to_lock_t try_to_lock;
 extern _LIBCPP_EXPORTED_FROM_ABI const adopt_lock_t  adopt_lock;
- 
-#else 
- 
-/* inline */ constexpr defer_lock_t  defer_lock  = defer_lock_t(); 
-/* inline */ constexpr try_to_lock_t try_to_lock = try_to_lock_t(); 
-/* inline */ constexpr adopt_lock_t  adopt_lock  = adopt_lock_t(); 
- 
-#endif 
- 
-template <class _Mutex> 
-class _LIBCPP_TEMPLATE_VIS _LIBCPP_THREAD_SAFETY_ANNOTATION(scoped_lockable) 
-lock_guard 
-{ 
-public: 
-    typedef _Mutex mutex_type; 
- 
-private: 
-    mutex_type& __m_; 
-public: 
- 
-    _LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY 
-    explicit lock_guard(mutex_type& __m) _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability(__m)) 
-        : __m_(__m) {__m_.lock();} 
- 
-    _LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY 
-    lock_guard(mutex_type& __m, adopt_lock_t) _LIBCPP_THREAD_SAFETY_ANNOTATION(requires_capability(__m)) 
-        : __m_(__m) {} 
-    _LIBCPP_INLINE_VISIBILITY 
-    ~lock_guard() _LIBCPP_THREAD_SAFETY_ANNOTATION(release_capability()) {__m_.unlock();} 
- 
-private: 
-    lock_guard(lock_guard const&) = delete; 
-    lock_guard& operator=(lock_guard const&) = delete; 
-}; 
- 
-template <class _Mutex> 
-class _LIBCPP_TEMPLATE_VIS unique_lock 
-{ 
-public: 
-    typedef _Mutex mutex_type; 
- 
-private: 
-    mutex_type* __m_; 
-    bool __owns_; 
- 
-public: 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock() _NOEXCEPT : __m_(nullptr), __owns_(false) {} 
-    _LIBCPP_INLINE_VISIBILITY 
-    explicit unique_lock(mutex_type& __m) 
-        : __m_(_VSTD::addressof(__m)), __owns_(true) {__m_->lock();} 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock(mutex_type& __m, defer_lock_t) _NOEXCEPT 
-        : __m_(_VSTD::addressof(__m)), __owns_(false) {} 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock(mutex_type& __m, try_to_lock_t) 
-        : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock()) {} 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock(mutex_type& __m, adopt_lock_t) 
-        : __m_(_VSTD::addressof(__m)), __owns_(true) {} 
-    template <class _Clock, class _Duration> 
-    _LIBCPP_INLINE_VISIBILITY 
-        unique_lock(mutex_type& __m, const chrono::time_point<_Clock, _Duration>& __t) 
-            : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock_until(__t)) {} 
-    template <class _Rep, class _Period> 
-    _LIBCPP_INLINE_VISIBILITY 
-        unique_lock(mutex_type& __m, const chrono::duration<_Rep, _Period>& __d) 
-            : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock_for(__d)) {} 
-    _LIBCPP_INLINE_VISIBILITY 
-    ~unique_lock() 
-    { 
-        if (__owns_) 
-            __m_->unlock(); 
-    } 
- 
-private: 
-    unique_lock(unique_lock const&); // = delete; 
-    unique_lock& operator=(unique_lock const&); // = delete; 
- 
-public: 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock(unique_lock&& __u) _NOEXCEPT 
-        : __m_(__u.__m_), __owns_(__u.__owns_) 
-        {__u.__m_ = nullptr; __u.__owns_ = false;} 
-    _LIBCPP_INLINE_VISIBILITY 
-    unique_lock& operator=(unique_lock&& __u) _NOEXCEPT 
-        { 
-            if (__owns_) 
-                __m_->unlock(); 
-            __m_ = __u.__m_; 
-            __owns_ = __u.__owns_; 
-            __u.__m_ = nullptr; 
-            __u.__owns_ = false; 
-            return *this; 
-        } 
- 
-    void lock(); 
-    bool try_lock(); 
- 
-    template <class _Rep, class _Period> 
-        bool try_lock_for(const chrono::duration<_Rep, _Period>& __d); 
-    template <class _Clock, class _Duration> 
-        bool try_lock_until(const chrono::time_point<_Clock, _Duration>& __t); 
- 
-    void unlock(); 
- 
-    _LIBCPP_INLINE_VISIBILITY 
-    void swap(unique_lock& __u) _NOEXCEPT 
-    { 
-        _VSTD::swap(__m_, __u.__m_); 
-        _VSTD::swap(__owns_, __u.__owns_); 
-    } 
-    _LIBCPP_INLINE_VISIBILITY 
-    mutex_type* release() _NOEXCEPT 
-    { 
-        mutex_type* __m = __m_; 
-        __m_ = nullptr; 
-        __owns_ = false; 
-        return __m; 
-    } 
- 
-    _LIBCPP_INLINE_VISIBILITY 
-    bool owns_lock() const _NOEXCEPT {return __owns_;} 
-    _LIBCPP_INLINE_VISIBILITY 
-    explicit operator bool() const _NOEXCEPT {return __owns_;} 
-    _LIBCPP_INLINE_VISIBILITY 
-    mutex_type* mutex() const _NOEXCEPT {return __m_;} 
-}; 
- 
-template <class _Mutex> 
-void 
-unique_lock<_Mutex>::lock() 
-{ 
-    if (__m_ == nullptr) 
-        __throw_system_error(EPERM, "unique_lock::lock: references null mutex"); 
-    if (__owns_) 
-        __throw_system_error(EDEADLK, "unique_lock::lock: already locked"); 
-    __m_->lock(); 
-    __owns_ = true; 
-} 
- 
-template <class _Mutex> 
-bool 
-unique_lock<_Mutex>::try_lock() 
-{ 
-    if (__m_ == nullptr) 
-        __throw_system_error(EPERM, "unique_lock::try_lock: references null mutex"); 
-    if (__owns_) 
-        __throw_system_error(EDEADLK, "unique_lock::try_lock: already locked"); 
-    __owns_ = __m_->try_lock(); 
-    return __owns_; 
-} 
- 
-template <class _Mutex> 
-template <class _Rep, class _Period> 
-bool 
-unique_lock<_Mutex>::try_lock_for(const chrono::duration<_Rep, _Period>& __d) 
-{ 
-    if (__m_ == nullptr) 
-        __throw_system_error(EPERM, "unique_lock::try_lock_for: references null mutex"); 
-    if (__owns_) 
-        __throw_system_error(EDEADLK, "unique_lock::try_lock_for: already locked"); 
-    __owns_ = __m_->try_lock_for(__d); 
-    return __owns_; 
-} 
- 
-template <class _Mutex> 
-template <class _Clock, class _Duration> 
-bool 
-unique_lock<_Mutex>::try_lock_until(const chrono::time_point<_Clock, _Duration>& __t) 
-{ 
-    if (__m_ == nullptr) 
-        __throw_system_error(EPERM, "unique_lock::try_lock_until: references null mutex"); 
-    if (__owns_) 
-        __throw_system_error(EDEADLK, "unique_lock::try_lock_until: already locked"); 
-    __owns_ = __m_->try_lock_until(__t); 
-    return __owns_; 
-} 
- 
-template <class _Mutex> 
-void 
-unique_lock<_Mutex>::unlock() 
-{ 
-    if (!__owns_) 
-        __throw_system_error(EPERM, "unique_lock::unlock: not locked"); 
-    __m_->unlock(); 
-    __owns_ = false; 
-} 
- 
-template <class _Mutex> 
-inline _LIBCPP_INLINE_VISIBILITY 
-void 
-swap(unique_lock<_Mutex>& __x, unique_lock<_Mutex>& __y) _NOEXCEPT 
-    {__x.swap(__y);} 
- 
-//enum class cv_status 
-_LIBCPP_DECLARE_STRONG_ENUM(cv_status) 
-{ 
-    no_timeout, 
-    timeout 
-}; 
-_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(cv_status) 
- 
-class _LIBCPP_TYPE_VIS condition_variable 
-{ 
-    __libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER; 
-public: 
-    _LIBCPP_INLINE_VISIBILITY 
-    _LIBCPP_CONSTEXPR condition_variable() _NOEXCEPT = default; 
- 
-#ifdef _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION 
-    ~condition_variable() = default; 
-#else 
-    ~condition_variable(); 
-#endif 
- 
-    condition_variable(const condition_variable&) = delete; 
-    condition_variable& operator=(const condition_variable&) = delete; 
- 
-    void notify_one() _NOEXCEPT; 
-    void notify_all() _NOEXCEPT; 
- 
-    void wait(unique_lock<mutex>& __lk) _NOEXCEPT; 
-    template <class _Predicate> 
-        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 
-        void wait(unique_lock<mutex>& __lk, _Predicate __pred); 
- 
-    template <class _Clock, class _Duration> 
-        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 
-        cv_status 
-        wait_until(unique_lock<mutex>& __lk, 
-                   const chrono::time_point<_Clock, _Duration>& __t); 
- 
-    template <class _Clock, class _Duration, class _Predicate> 
-        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 
-        bool 
-        wait_until(unique_lock<mutex>& __lk, 
-                   const chrono::time_point<_Clock, _Duration>& __t, 
-                   _Predicate __pred); 
- 
-    template <class _Rep, class _Period> 
-        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS 
-        cv_status 
-        wait_for(unique_lock<mutex>& __lk, 
-                 const chrono::duration<_Rep, _Period>& __d); 
- 
-    template <class _Rep, class _Period, class _Predicate> 
-        bool 
-        _LIBCPP_INLINE_VISIBILITY 
-        wait_for(unique_lock<mutex>& __lk, 
-                 const chrono::duration<_Rep, _Period>& __d, 
-                 _Predicate __pred); 
- 
-    typedef __libcpp_condvar_t* native_handle_type; 
-    _LIBCPP_INLINE_VISIBILITY native_handle_type native_handle() {return &__cv_;} 
- 
-private: 
-    void __do_timed_wait(unique_lock<mutex>& __lk, 
-       chrono::time_point<chrono::system_clock, chrono::nanoseconds>) _NOEXCEPT; 
-#if defined(_LIBCPP_HAS_COND_CLOCKWAIT) 
-    void __do_timed_wait(unique_lock<mutex>& __lk, 
-       chrono::time_point<chrono::steady_clock, chrono::nanoseconds>) _NOEXCEPT; 
-#endif 
-    template <class _Clock> 
-    void __do_timed_wait(unique_lock<mutex>& __lk, 
-       chrono::time_point<_Clock, chrono::nanoseconds>) _NOEXCEPT; 
-}; 
-#endif // !_LIBCPP_HAS_NO_THREADS 
- 
-template <class _Rep, class _Period> 
-inline _LIBCPP_INLINE_VISIBILITY 
-typename enable_if 
-< 
-    is_floating_point<_Rep>::value, 
-    chrono::nanoseconds 
->::type 
-__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d) 
-{ 
-    using namespace chrono; 
-    using __ratio = ratio_divide<_Period, nano>; 
-    using __ns_rep = nanoseconds::rep; 
-    _Rep __result_float = __d.count() * __ratio::num / __ratio::den; 
- 
-    _Rep __result_max = numeric_limits<__ns_rep>::max(); 
-    if (__result_float >= __result_max) { 
-        return nanoseconds::max(); 
-    } 
- 
-    _Rep __result_min = numeric_limits<__ns_rep>::min(); 
-    if (__result_float <= __result_min) { 
-        return nanoseconds::min(); 
-    } 
- 
-    return nanoseconds(static_cast<__ns_rep>(__result_float)); 
-} 
- 
-template <class _Rep, class _Period> 
-inline _LIBCPP_INLINE_VISIBILITY 
-typename enable_if 
-< 
-    !is_floating_point<_Rep>::value, 
-    chrono::nanoseconds 
->::type 
-__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d) 
-{ 
-    using namespace chrono; 
-    if (__d.count() == 0) { 
-        return nanoseconds(0); 
-    } 
- 
-    using __ratio = ratio_divide<_Period, nano>; 
-    using __ns_rep = nanoseconds::rep; 
-    __ns_rep __result_max = numeric_limits<__ns_rep>::max(); 
-    if (__d.count() > 0 && __d.count() > __result_max / __ratio::num) { 
-        return nanoseconds::max(); 
-    } 
- 
-    __ns_rep __result_min = numeric_limits<__ns_rep>::min(); 
-    if (__d.count() < 0 && __d.count() < __result_min / __ratio::num) { 
-        return nanoseconds::min(); 
-    } 
- 
-    __ns_rep __result = __d.count() * __ratio::num / __ratio::den; 
-    if (__result == 0) { 
-        return nanoseconds(1); 
-    } 
- 
-    return nanoseconds(__result); 
-} 
- 
-#ifndef _LIBCPP_HAS_NO_THREADS 
-template <class _Predicate> 
-void 
-condition_variable::wait(unique_lock<mutex>& __lk, _Predicate __pred) 
-{ 
-    while (!__pred()) 
-        wait(__lk); 
-} 
- 
-template <class _Clock, class _Duration> 
-cv_status 
-condition_variable::wait_until(unique_lock<mutex>& __lk, 
-                               const chrono::time_point<_Clock, _Duration>& __t) 
-{ 
-    using namespace chrono; 
-    using __clock_tp_ns = time_point<_Clock, nanoseconds>; 
- 
-    typename _Clock::time_point __now = _Clock::now(); 
-    if (__t <= __now) 
-        return cv_status::timeout; 
- 
-    __clock_tp_ns __t_ns = __clock_tp_ns(_VSTD::__safe_nanosecond_cast(__t.time_since_epoch())); 
- 
-    __do_timed_wait(__lk, __t_ns); 
-    return _Clock::now() < __t ? cv_status::no_timeout : cv_status::timeout; 
-} 
- 
-template <class _Clock, class _Duration, class _Predicate> 
-bool 
-condition_variable::wait_until(unique_lock<mutex>& __lk, 
-                   const chrono::time_point<_Clock, _Duration>& __t, 
-                   _Predicate __pred) 
-{ 
-    while (!__pred()) 
-    { 
-        if (wait_until(__lk, __t) == cv_status::timeout) 
-            return __pred(); 
-    } 
-    return true; 
-} 
- 
-template <class _Rep, class _Period> 
-cv_status 
-condition_variable::wait_for(unique_lock<mutex>& __lk, 
-                             const chrono::duration<_Rep, _Period>& __d) 
-{ 
-    using namespace chrono; 
-    if (__d <= __d.zero()) 
-        return cv_status::timeout; 
-    using __ns_rep = nanoseconds::rep; 
-    steady_clock::time_point __c_now = steady_clock::now(); 
- 
-#if defined(_LIBCPP_HAS_COND_CLOCKWAIT) 
-    using __clock_tp_ns = time_point<steady_clock, nanoseconds>; 
-    __ns_rep __now_count_ns = _VSTD::__safe_nanosecond_cast(__c_now.time_since_epoch()).count(); 
-#else 
-    using __clock_tp_ns = time_point<system_clock, nanoseconds>; 
-    __ns_rep __now_count_ns = _VSTD::__safe_nanosecond_cast(system_clock::now().time_since_epoch()).count(); 
-#endif 
- 
-    __ns_rep __d_ns_count = _VSTD::__safe_nanosecond_cast(__d).count(); 
- 
-    if (__now_count_ns > numeric_limits<__ns_rep>::max() - __d_ns_count) { 
-        __do_timed_wait(__lk, __clock_tp_ns::max()); 
-    } else { 
-        __do_timed_wait(__lk, __clock_tp_ns(nanoseconds(__now_count_ns + __d_ns_count))); 
-    } 
- 
-    return steady_clock::now() - __c_now < __d ? cv_status::no_timeout : 
-                                                 cv_status::timeout; 
-} 
- 
-template <class _Rep, class _Period, class _Predicate> 
-inline 
-bool 
-condition_variable::wait_for(unique_lock<mutex>& __lk, 
-                             const chrono::duration<_Rep, _Period>& __d, 
-                             _Predicate __pred) 
-{ 
-    return wait_until(__lk, chrono::steady_clock::now() + __d, 
-                      _VSTD::move(__pred)); 
-} 
- 
-#if defined(_LIBCPP_HAS_COND_CLOCKWAIT) 
-inline 
-void 
-condition_variable::__do_timed_wait(unique_lock<mutex>& __lk, 
-     chrono::time_point<chrono::steady_clock, chrono::nanoseconds> __tp) _NOEXCEPT 
-{ 
-    using namespace chrono; 
-    if (!__lk.owns_lock()) 
-        __throw_system_error(EPERM, 
-                            "condition_variable::timed wait: mutex not locked"); 
-    nanoseconds __d = __tp.time_since_epoch(); 
-    timespec __ts; 
-    seconds __s = duration_cast<seconds>(__d); 
-    using __ts_sec = decltype(__ts.tv_sec); 
-    const __ts_sec __ts_sec_max = numeric_limits<__ts_sec>::max(); 
-    if (__s.count() < __ts_sec_max) 
-    { 
-        __ts.tv_sec = static_cast<__ts_sec>(__s.count()); 
-        __ts.tv_nsec = (__d - __s).count(); 
-    } 
-    else 
-    { 
-        __ts.tv_sec = __ts_sec_max; 
-        __ts.tv_nsec = giga::num - 1; 
-    } 
-    int __ec = pthread_cond_clockwait(&__cv_, __lk.mutex()->native_handle(), CLOCK_MONOTONIC, &__ts); 
-    if (__ec != 0 && __ec != ETIMEDOUT) 
-        __throw_system_error(__ec, "condition_variable timed_wait failed"); 
-} 
-#endif // _LIBCPP_HAS_COND_CLOCKWAIT 
- 
-template <class _Clock> 
-inline 
-void 
-condition_variable::__do_timed_wait(unique_lock<mutex>& __lk, 
-     chrono::time_point<_Clock, chrono::nanoseconds> __tp) _NOEXCEPT 
-{ 
-    wait_for(__lk, __tp - _Clock::now()); 
-} 
- 
-#endif // !_LIBCPP_HAS_NO_THREADS 
- 
-_LIBCPP_END_NAMESPACE_STD 
- 
-_LIBCPP_POP_MACROS 
- 
-#endif // _LIBCPP___MUTEX_BASE 
+
+#else
+
+/* inline */ constexpr defer_lock_t  defer_lock  = defer_lock_t();
+/* inline */ constexpr try_to_lock_t try_to_lock = try_to_lock_t();
+/* inline */ constexpr adopt_lock_t  adopt_lock  = adopt_lock_t();
+
+#endif
+
+template <class _Mutex>
+class _LIBCPP_TEMPLATE_VIS _LIBCPP_THREAD_SAFETY_ANNOTATION(scoped_lockable)
+lock_guard
+{
+public:
+    typedef _Mutex mutex_type;
+
+private:
+    mutex_type& __m_;
+public:
+
+    _LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY
+    explicit lock_guard(mutex_type& __m) _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability(__m))
+        : __m_(__m) {__m_.lock();}
+
+    _LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY
+    lock_guard(mutex_type& __m, adopt_lock_t) _LIBCPP_THREAD_SAFETY_ANNOTATION(requires_capability(__m))
+        : __m_(__m) {}
+    _LIBCPP_INLINE_VISIBILITY
+    ~lock_guard() _LIBCPP_THREAD_SAFETY_ANNOTATION(release_capability()) {__m_.unlock();}
+
+private:
+    lock_guard(lock_guard const&) = delete;
+    lock_guard& operator=(lock_guard const&) = delete;
+};
+
+template <class _Mutex>
+class _LIBCPP_TEMPLATE_VIS unique_lock
+{
+public:
+    typedef _Mutex mutex_type;
+
+private:
+    mutex_type* __m_;
+    bool __owns_;
+
+public:
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock() _NOEXCEPT : __m_(nullptr), __owns_(false) {}
+    _LIBCPP_INLINE_VISIBILITY
+    explicit unique_lock(mutex_type& __m)
+        : __m_(_VSTD::addressof(__m)), __owns_(true) {__m_->lock();}
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock(mutex_type& __m, defer_lock_t) _NOEXCEPT
+        : __m_(_VSTD::addressof(__m)), __owns_(false) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock(mutex_type& __m, try_to_lock_t)
+        : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock()) {}
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock(mutex_type& __m, adopt_lock_t)
+        : __m_(_VSTD::addressof(__m)), __owns_(true) {}
+    template <class _Clock, class _Duration>
+    _LIBCPP_INLINE_VISIBILITY
+        unique_lock(mutex_type& __m, const chrono::time_point<_Clock, _Duration>& __t)
+            : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock_until(__t)) {}
+    template <class _Rep, class _Period>
+    _LIBCPP_INLINE_VISIBILITY
+        unique_lock(mutex_type& __m, const chrono::duration<_Rep, _Period>& __d)
+            : __m_(_VSTD::addressof(__m)), __owns_(__m.try_lock_for(__d)) {}
+    _LIBCPP_INLINE_VISIBILITY
+    ~unique_lock()
+    {
+        if (__owns_)
+            __m_->unlock();
+    }
+
+private:
+    unique_lock(unique_lock const&); // = delete;
+    unique_lock& operator=(unique_lock const&); // = delete;
+
+public:
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock(unique_lock&& __u) _NOEXCEPT
+        : __m_(__u.__m_), __owns_(__u.__owns_)
+        {__u.__m_ = nullptr; __u.__owns_ = false;}
+    _LIBCPP_INLINE_VISIBILITY
+    unique_lock& operator=(unique_lock&& __u) _NOEXCEPT
+        {
+            if (__owns_)
+                __m_->unlock();
+            __m_ = __u.__m_;
+            __owns_ = __u.__owns_;
+            __u.__m_ = nullptr;
+            __u.__owns_ = false;
+            return *this;
+        }
+
+    void lock();
+    bool try_lock();
+
+    template <class _Rep, class _Period>
+        bool try_lock_for(const chrono::duration<_Rep, _Period>& __d);
+    template <class _Clock, class _Duration>
+        bool try_lock_until(const chrono::time_point<_Clock, _Duration>& __t);
+
+    void unlock();
+
+    _LIBCPP_INLINE_VISIBILITY
+    void swap(unique_lock& __u) _NOEXCEPT
+    {
+        _VSTD::swap(__m_, __u.__m_);
+        _VSTD::swap(__owns_, __u.__owns_);
+    }
+    _LIBCPP_INLINE_VISIBILITY
+    mutex_type* release() _NOEXCEPT
+    {
+        mutex_type* __m = __m_;
+        __m_ = nullptr;
+        __owns_ = false;
+        return __m;
+    }
+
+    _LIBCPP_INLINE_VISIBILITY
+    bool owns_lock() const _NOEXCEPT {return __owns_;}
+    _LIBCPP_INLINE_VISIBILITY
+    explicit operator bool() const _NOEXCEPT {return __owns_;}
+    _LIBCPP_INLINE_VISIBILITY
+    mutex_type* mutex() const _NOEXCEPT {return __m_;}
+};
+
+template <class _Mutex>
+void
+unique_lock<_Mutex>::lock()
+{
+    if (__m_ == nullptr)
+        __throw_system_error(EPERM, "unique_lock::lock: references null mutex");
+    if (__owns_)
+        __throw_system_error(EDEADLK, "unique_lock::lock: already locked");
+    __m_->lock();
+    __owns_ = true;
+}
+
+template <class _Mutex>
+bool
+unique_lock<_Mutex>::try_lock()
+{
+    if (__m_ == nullptr)
+        __throw_system_error(EPERM, "unique_lock::try_lock: references null mutex");
+    if (__owns_)
+        __throw_system_error(EDEADLK, "unique_lock::try_lock: already locked");
+    __owns_ = __m_->try_lock();
+    return __owns_;
+}
+
+template <class _Mutex>
+template <class _Rep, class _Period>
+bool
+unique_lock<_Mutex>::try_lock_for(const chrono::duration<_Rep, _Period>& __d)
+{
+    if (__m_ == nullptr)
+        __throw_system_error(EPERM, "unique_lock::try_lock_for: references null mutex");
+    if (__owns_)
+        __throw_system_error(EDEADLK, "unique_lock::try_lock_for: already locked");
+    __owns_ = __m_->try_lock_for(__d);
+    return __owns_;
+}
+
+template <class _Mutex>
+template <class _Clock, class _Duration>
+bool
+unique_lock<_Mutex>::try_lock_until(const chrono::time_point<_Clock, _Duration>& __t)
+{
+    if (__m_ == nullptr)
+        __throw_system_error(EPERM, "unique_lock::try_lock_until: references null mutex");
+    if (__owns_)
+        __throw_system_error(EDEADLK, "unique_lock::try_lock_until: already locked");
+    __owns_ = __m_->try_lock_until(__t);
+    return __owns_;
+}
+
+template <class _Mutex>
+void
+unique_lock<_Mutex>::unlock()
+{
+    if (!__owns_)
+        __throw_system_error(EPERM, "unique_lock::unlock: not locked");
+    __m_->unlock();
+    __owns_ = false;
+}
+
+template <class _Mutex>
+inline _LIBCPP_INLINE_VISIBILITY
+void
+swap(unique_lock<_Mutex>& __x, unique_lock<_Mutex>& __y) _NOEXCEPT
+    {__x.swap(__y);}
+
+//enum class cv_status
+_LIBCPP_DECLARE_STRONG_ENUM(cv_status)
+{
+    no_timeout,
+    timeout
+};
+_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(cv_status)
+
+class _LIBCPP_TYPE_VIS condition_variable
+{
+    __libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER;
+public:
+    _LIBCPP_INLINE_VISIBILITY
+    _LIBCPP_CONSTEXPR condition_variable() _NOEXCEPT = default;
+
+#ifdef _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION
+    ~condition_variable() = default;
+#else
+    ~condition_variable();
+#endif
+
+    condition_variable(const condition_variable&) = delete;
+    condition_variable& operator=(const condition_variable&) = delete;
+
+    void notify_one() _NOEXCEPT;
+    void notify_all() _NOEXCEPT;
+
+    void wait(unique_lock<mutex>& __lk) _NOEXCEPT;
+    template <class _Predicate>
+        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+        void wait(unique_lock<mutex>& __lk, _Predicate __pred);
+
+    template <class _Clock, class _Duration>
+        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+        cv_status
+        wait_until(unique_lock<mutex>& __lk,
+                   const chrono::time_point<_Clock, _Duration>& __t);
+
+    template <class _Clock, class _Duration, class _Predicate>
+        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+        bool
+        wait_until(unique_lock<mutex>& __lk,
+                   const chrono::time_point<_Clock, _Duration>& __t,
+                   _Predicate __pred);
+
+    template <class _Rep, class _Period>
+        _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+        cv_status
+        wait_for(unique_lock<mutex>& __lk,
+                 const chrono::duration<_Rep, _Period>& __d);
+
+    template <class _Rep, class _Period, class _Predicate>
+        bool
+        _LIBCPP_INLINE_VISIBILITY
+        wait_for(unique_lock<mutex>& __lk,
+                 const chrono::duration<_Rep, _Period>& __d,
+                 _Predicate __pred);
+
+    typedef __libcpp_condvar_t* native_handle_type;
+    _LIBCPP_INLINE_VISIBILITY native_handle_type native_handle() {return &__cv_;}
+
+private:
+    void __do_timed_wait(unique_lock<mutex>& __lk,
+       chrono::time_point<chrono::system_clock, chrono::nanoseconds>) _NOEXCEPT;
+#if defined(_LIBCPP_HAS_COND_CLOCKWAIT)
+    void __do_timed_wait(unique_lock<mutex>& __lk,
+       chrono::time_point<chrono::steady_clock, chrono::nanoseconds>) _NOEXCEPT;
+#endif
+    template <class _Clock>
+    void __do_timed_wait(unique_lock<mutex>& __lk,
+       chrono::time_point<_Clock, chrono::nanoseconds>) _NOEXCEPT;
+};
+#endif // !_LIBCPP_HAS_NO_THREADS
+
+template <class _Rep, class _Period>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    is_floating_point<_Rep>::value,
+    chrono::nanoseconds
+>::type
+__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d)
+{
+    using namespace chrono;
+    using __ratio = ratio_divide<_Period, nano>;
+    using __ns_rep = nanoseconds::rep;
+    _Rep __result_float = __d.count() * __ratio::num / __ratio::den;
+
+    _Rep __result_max = numeric_limits<__ns_rep>::max();
+    if (__result_float >= __result_max) {
+        return nanoseconds::max();
+    }
+
+    _Rep __result_min = numeric_limits<__ns_rep>::min();
+    if (__result_float <= __result_min) {
+        return nanoseconds::min();
+    }
+
+    return nanoseconds(static_cast<__ns_rep>(__result_float));
+}
+
+template <class _Rep, class _Period>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+    !is_floating_point<_Rep>::value,
+    chrono::nanoseconds
+>::type
+__safe_nanosecond_cast(chrono::duration<_Rep, _Period> __d)
+{
+    using namespace chrono;
+    if (__d.count() == 0) {
+        return nanoseconds(0);
+    }
+
+    using __ratio = ratio_divide<_Period, nano>;
+    using __ns_rep = nanoseconds::rep;
+    __ns_rep __result_max = numeric_limits<__ns_rep>::max();
+    if (__d.count() > 0 && __d.count() > __result_max / __ratio::num) {
+        return nanoseconds::max();
+    }
+
+    __ns_rep __result_min = numeric_limits<__ns_rep>::min();
+    if (__d.count() < 0 && __d.count() < __result_min / __ratio::num) {
+        return nanoseconds::min();
+    }
+
+    __ns_rep __result = __d.count() * __ratio::num / __ratio::den;
+    if (__result == 0) {
+        return nanoseconds(1);
+    }
+
+    return nanoseconds(__result);
+}
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+template <class _Predicate>
+void
+condition_variable::wait(unique_lock<mutex>& __lk, _Predicate __pred)
+{
+    while (!__pred())
+        wait(__lk);
+}
+
+template <class _Clock, class _Duration>
+cv_status
+condition_variable::wait_until(unique_lock<mutex>& __lk,
+                               const chrono::time_point<_Clock, _Duration>& __t)
+{
+    using namespace chrono;
+    using __clock_tp_ns = time_point<_Clock, nanoseconds>;
+
+    typename _Clock::time_point __now = _Clock::now();
+    if (__t <= __now)
+        return cv_status::timeout;
+
+    __clock_tp_ns __t_ns = __clock_tp_ns(_VSTD::__safe_nanosecond_cast(__t.time_since_epoch()));
+
+    __do_timed_wait(__lk, __t_ns);
+    return _Clock::now() < __t ? cv_status::no_timeout : cv_status::timeout;
+}
+
+template <class _Clock, class _Duration, class _Predicate>
+bool
+condition_variable::wait_until(unique_lock<mutex>& __lk,
+                   const chrono::time_point<_Clock, _Duration>& __t,
+                   _Predicate __pred)
+{
+    while (!__pred())
+    {
+        if (wait_until(__lk, __t) == cv_status::timeout)
+            return __pred();
+    }
+    return true;
+}
+
+template <class _Rep, class _Period>
+cv_status
+condition_variable::wait_for(unique_lock<mutex>& __lk,
+                             const chrono::duration<_Rep, _Period>& __d)
+{
+    using namespace chrono;
+    if (__d <= __d.zero())
+        return cv_status::timeout;
+    using __ns_rep = nanoseconds::rep;
+    steady_clock::time_point __c_now = steady_clock::now();
+
+#if defined(_LIBCPP_HAS_COND_CLOCKWAIT)
+    using __clock_tp_ns = time_point<steady_clock, nanoseconds>;
+    __ns_rep __now_count_ns = _VSTD::__safe_nanosecond_cast(__c_now.time_since_epoch()).count();
+#else
+    using __clock_tp_ns = time_point<system_clock, nanoseconds>;
+    __ns_rep __now_count_ns = _VSTD::__safe_nanosecond_cast(system_clock::now().time_since_epoch()).count();
+#endif
+
+    __ns_rep __d_ns_count = _VSTD::__safe_nanosecond_cast(__d).count();
+
+    if (__now_count_ns > numeric_limits<__ns_rep>::max() - __d_ns_count) {
+        __do_timed_wait(__lk, __clock_tp_ns::max());
+    } else {
+        __do_timed_wait(__lk, __clock_tp_ns(nanoseconds(__now_count_ns + __d_ns_count)));
+    }
+
+    return steady_clock::now() - __c_now < __d ? cv_status::no_timeout :
+                                                 cv_status::timeout;
+}
+
+template <class _Rep, class _Period, class _Predicate>
+inline
+bool
+condition_variable::wait_for(unique_lock<mutex>& __lk,
+                             const chrono::duration<_Rep, _Period>& __d,
+                             _Predicate __pred)
+{
+    return wait_until(__lk, chrono::steady_clock::now() + __d,
+                      _VSTD::move(__pred));
+}
+
+#if defined(_LIBCPP_HAS_COND_CLOCKWAIT)
+inline
+void
+condition_variable::__do_timed_wait(unique_lock<mutex>& __lk,
+     chrono::time_point<chrono::steady_clock, chrono::nanoseconds> __tp) _NOEXCEPT
+{
+    using namespace chrono;
+    if (!__lk.owns_lock())
+        __throw_system_error(EPERM,
+                            "condition_variable::timed wait: mutex not locked");
+    nanoseconds __d = __tp.time_since_epoch();
+    timespec __ts;
+    seconds __s = duration_cast<seconds>(__d);
+    using __ts_sec = decltype(__ts.tv_sec);
+    const __ts_sec __ts_sec_max = numeric_limits<__ts_sec>::max();
+    if (__s.count() < __ts_sec_max)
+    {
+        __ts.tv_sec = static_cast<__ts_sec>(__s.count());
+        __ts.tv_nsec = (__d - __s).count();
+    }
+    else
+    {
+        __ts.tv_sec = __ts_sec_max;
+        __ts.tv_nsec = giga::num - 1;
+    }
+    int __ec = pthread_cond_clockwait(&__cv_, __lk.mutex()->native_handle(), CLOCK_MONOTONIC, &__ts);
+    if (__ec != 0 && __ec != ETIMEDOUT)
+        __throw_system_error(__ec, "condition_variable timed_wait failed");
+}
+#endif // _LIBCPP_HAS_COND_CLOCKWAIT
+
+template <class _Clock>
+inline
+void
+condition_variable::__do_timed_wait(unique_lock<mutex>& __lk,
+     chrono::time_point<_Clock, chrono::nanoseconds> __tp) _NOEXCEPT
+{
+    wait_for(__lk, __tp - _Clock::now());
+}
+
+#endif // !_LIBCPP_HAS_NO_THREADS
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP___MUTEX_BASE