1 files changed, 0 insertions, 260 deletions

diff --git a/contrib/libc++/src/mutex.cpp b/contrib/libc++/src/mutex.cpp
deleted file mode 100644
index ceb4980c9147..000000000000
--- a/contrib/libc++/src/mutex.cpp
+++ /dev/null
@@ -1,260 +0,0 @@
-//===------------------------- mutex.cpp ----------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "mutex"
-#include "limits"
-#include "system_error"
-#include "include/atomic_support.h"
-#include "__undef_macros"
-
-#ifndef _LIBCPP_HAS_NO_THREADS
-#if defined(__unix__) &&  defined(__ELF__) && defined(_LIBCPP_HAS_COMMENT_LIB_PRAGMA)
-#pragma comment(lib, "pthread")
-#endif
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-#ifndef _LIBCPP_HAS_NO_THREADS
-
-const defer_lock_t  defer_lock = {};
-const try_to_lock_t try_to_lock = {};
-const adopt_lock_t  adopt_lock = {};
-
-// ~mutex is defined elsewhere
-
-void
-mutex::lock()
-{
-    int ec = __libcpp_mutex_lock(&__m_);
-    if (ec)
-        __throw_system_error(ec, "mutex lock failed");
-}
-
-bool
-mutex::try_lock() _NOEXCEPT
-{
-    return __libcpp_mutex_trylock(&__m_);
-}
-
-void
-mutex::unlock() _NOEXCEPT
-{
-    int ec = __libcpp_mutex_unlock(&__m_);
-    (void)ec;
-    _LIBCPP_ASSERT(ec == 0, "call to mutex::unlock failed");
-}
-
-// recursive_mutex
-
-recursive_mutex::recursive_mutex()
-{
-    int ec = __libcpp_recursive_mutex_init(&__m_);
-    if (ec)
-        __throw_system_error(ec, "recursive_mutex constructor failed");
-}
-
-recursive_mutex::~recursive_mutex()
-{
-    int e = __libcpp_recursive_mutex_destroy(&__m_);
-    (void)e;
-    _LIBCPP_ASSERT(e == 0, "call to ~recursive_mutex() failed");
-}
-
-void
-recursive_mutex::lock()
-{
-    int ec = __libcpp_recursive_mutex_lock(&__m_);
-    if (ec)
-        __throw_system_error(ec, "recursive_mutex lock failed");
-}
-
-void
-recursive_mutex::unlock() _NOEXCEPT
-{
-    int e = __libcpp_recursive_mutex_unlock(&__m_);
-    (void)e;
-    _LIBCPP_ASSERT(e == 0, "call to recursive_mutex::unlock() failed");
-}
-
-bool
-recursive_mutex::try_lock() _NOEXCEPT
-{
-    return __libcpp_recursive_mutex_trylock(&__m_);
-}
-
-// timed_mutex
-
-timed_mutex::timed_mutex()
-    : __locked_(false)
-{
-}
-
-timed_mutex::~timed_mutex()
-{
-    lock_guard<mutex> _(__m_);
-}
-
-void
-timed_mutex::lock()
-{
-    unique_lock<mutex> lk(__m_);
-    while (__locked_)
-        __cv_.wait(lk);
-    __locked_ = true;
-}
-
-bool
-timed_mutex::try_lock() _NOEXCEPT
-{
-    unique_lock<mutex> lk(__m_, try_to_lock);
-    if (lk.owns_lock() && !__locked_)
-    {
-        __locked_ = true;
-        return true;
-    }
-    return false;
-}
-
-void
-timed_mutex::unlock() _NOEXCEPT
-{
-    lock_guard<mutex> _(__m_);
-    __locked_ = false;
-    __cv_.notify_one();
-}
-
-// recursive_timed_mutex
-
-recursive_timed_mutex::recursive_timed_mutex()
-    : __count_(0),
-      __id_{}
-{
-}
-
-recursive_timed_mutex::~recursive_timed_mutex()
-{
-    lock_guard<mutex> _(__m_);
-}
-
-void
-recursive_timed_mutex::lock()
-{
-    __thread_id id = this_thread::get_id();
-    unique_lock<mutex> lk(__m_);
-    if (id ==__id_)
-    {
-        if (__count_ == numeric_limits<size_t>::max())
-            __throw_system_error(EAGAIN, "recursive_timed_mutex lock limit reached");
-        ++__count_;
-        return;
-    }
-    while (__count_ != 0)
-        __cv_.wait(lk);
-    __count_ = 1;
-    __id_ = id;
-}
-
-bool
-recursive_timed_mutex::try_lock() _NOEXCEPT
-{
-    __thread_id id = this_thread::get_id();
-    unique_lock<mutex> lk(__m_, try_to_lock);
-    if (lk.owns_lock() && (__count_ == 0 || id == __id_))
-    {
-        if (__count_ == numeric_limits<size_t>::max())
-            return false;
-        ++__count_;
-        __id_ = id;
-        return true;
-    }
-    return false;
-}
-
-void
-recursive_timed_mutex::unlock() _NOEXCEPT
-{
-    unique_lock<mutex> lk(__m_);
-    if (--__count_ == 0)
-    {
-        __id_.__reset();
-        lk.unlock();
-        __cv_.notify_one();
-    }
-}
-
-#endif // !_LIBCPP_HAS_NO_THREADS
-
-// If dispatch_once_f ever handles C++ exceptions, and if one can get to it
-// without illegal macros (unexpected macros not beginning with _UpperCase or
-// __lowercase), and if it stops spinning waiting threads, then call_once should
-// call into dispatch_once_f instead of here. Relevant radar this code needs to
-// keep in sync with:  7741191.
-
-#ifndef _LIBCPP_HAS_NO_THREADS
-_LIBCPP_SAFE_STATIC static __libcpp_mutex_t mut = _LIBCPP_MUTEX_INITIALIZER;
-_LIBCPP_SAFE_STATIC static __libcpp_condvar_t cv = _LIBCPP_CONDVAR_INITIALIZER;
-#endif
-
-void __call_once(volatile once_flag::_State_type& flag, void* arg,
-                 void (*func)(void*))
-{
-#if defined(_LIBCPP_HAS_NO_THREADS)
-    if (flag == 0)
-    {
-#ifndef _LIBCPP_NO_EXCEPTIONS
-        try
-        {
-#endif  // _LIBCPP_NO_EXCEPTIONS
-            flag = 1;
-            func(arg);
-            flag = ~once_flag::_State_type(0);
-#ifndef _LIBCPP_NO_EXCEPTIONS
-        }
-        catch (...)
-        {
-            flag = 0;
-            throw;
-        }
-#endif  // _LIBCPP_NO_EXCEPTIONS
-    }
-#else // !_LIBCPP_HAS_NO_THREADS
-    __libcpp_mutex_lock(&mut);
-    while (flag == 1)
-        __libcpp_condvar_wait(&cv, &mut);
-    if (flag == 0)
-    {
-#ifndef _LIBCPP_NO_EXCEPTIONS
-        try
-        {
-#endif  // _LIBCPP_NO_EXCEPTIONS
-            __libcpp_relaxed_store(&flag, once_flag::_State_type(1));
-            __libcpp_mutex_unlock(&mut);
-            func(arg);
-            __libcpp_mutex_lock(&mut);
-            __libcpp_atomic_store(&flag, ~once_flag::_State_type(0),
-                                  _AO_Release);
-            __libcpp_mutex_unlock(&mut);
-            __libcpp_condvar_broadcast(&cv);
-#ifndef _LIBCPP_NO_EXCEPTIONS
-        }
-        catch (...)
-        {
-            __libcpp_mutex_lock(&mut);
-            __libcpp_relaxed_store(&flag, once_flag::_State_type(0));
-            __libcpp_mutex_unlock(&mut);
-            __libcpp_condvar_broadcast(&cv);
-            throw;
-        }
-#endif  // _LIBCPP_NO_EXCEPTIONS
-    }
-    else
-        __libcpp_mutex_unlock(&mut);
-#endif // !_LIBCPP_HAS_NO_THREADS
-}
-
-_LIBCPP_END_NAMESPACE_STD