mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-12-01 09:46:09 +03:00
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#include "base/synchronization/condition_variable.h"
|
||
|
|
|
||
|
|
#include "base/synchronization/lock.h"
|
||
|
|
#include "base/threading/scoped_blocking_call.h"
|
||
|
|
#include "base/threading/thread_restrictions.h"
|
||
|
|
#include "base/time/time.h"
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
ConditionVariable::ConditionVariable(Lock* user_lock)
|
||
|
|
: srwlock_(user_lock->lock_.native_handle())
|
||
|
|
#if DCHECK_IS_ON()
|
||
|
|
, user_lock_(user_lock)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
DCHECK(user_lock);
|
||
|
|
InitializeConditionVariable(reinterpret_cast<PCONDITION_VARIABLE>(&cv_));
|
||
|
|
}
|
||
|
|
|
||
|
|
ConditionVariable::~ConditionVariable() = default;
|
||
|
|
|
||
|
|
void ConditionVariable::Wait() {
|
||
|
|
TimedWait(TimeDelta::FromMilliseconds(INFINITE));
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConditionVariable::TimedWait(const TimeDelta& max_time) {
|
||
|
|
internal::AssertBaseSyncPrimitivesAllowed();
|
||
|
|
ScopedBlockingCall scoped_blocking_call(BlockingType::MAY_BLOCK);
|
||
|
|
DWORD timeout = static_cast<DWORD>(max_time.InMilliseconds());
|
||
|
|
|
||
|
|
#if DCHECK_IS_ON()
|
||
|
|
user_lock_->CheckHeldAndUnmark();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (!SleepConditionVariableSRW(reinterpret_cast<PCONDITION_VARIABLE>(&cv_),
|
||
|
|
reinterpret_cast<PSRWLOCK>(srwlock_), timeout,
|
||
|
|
0)) {
|
||
|
|
// On failure, we only expect the CV to timeout. Any other error value means
|
||
|
|
// that we've unexpectedly woken up.
|
||
|
|
// Note that WAIT_TIMEOUT != ERROR_TIMEOUT. WAIT_TIMEOUT is used with the
|
||
|
|
// WaitFor* family of functions as a direct return value. ERROR_TIMEOUT is
|
||
|
|
// used with GetLastError().
|
||
|
|
DCHECK_EQ(static_cast<DWORD>(ERROR_TIMEOUT), GetLastError());
|
||
|
|
}
|
||
|
|
|
||
|
|
#if DCHECK_IS_ON()
|
||
|
|
user_lock_->CheckUnheldAndMark();
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConditionVariable::Broadcast() {
|
||
|
|
WakeAllConditionVariable(reinterpret_cast<PCONDITION_VARIABLE>(&cv_));
|
||
|
|
}
|
||
|
|
|
||
|
|
void ConditionVariable::Signal() {
|
||
|
|
WakeConditionVariable(reinterpret_cast<PCONDITION_VARIABLE>(&cv_));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|