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/*
* Copyright 2020 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_SYNCHRONIZATION_MUTEX_CRITICAL_SECTION_H_
#define RTC_BASE_SYNCHRONIZATION_MUTEX_CRITICAL_SECTION_H_
#if defined(WEBRTC_WIN)
// clang-format off
// clang formating would change include order.
// Include winsock2.h before including <windows.h> to maintain consistency with
// win32.h. To include win32.h directly, it must be broken out into its own
// build target.
#include <winsock2.h>
#include <windows.h>
#include <sal.h> // must come after windows headers.
// clang-format on
#include "absl/base/attributes.h"
#include "rtc_base/thread_annotations.h"
namespace webrtc {
class RTC_LOCKABLE MutexImpl final {
public:
MutexImpl() { InitializeCriticalSection(&critical_section_); }
MutexImpl(const MutexImpl&) = delete;
MutexImpl& operator=(const MutexImpl&) = delete;
~MutexImpl() { DeleteCriticalSection(&critical_section_); }
void Lock() RTC_EXCLUSIVE_LOCK_FUNCTION() {
EnterCriticalSection(&critical_section_);
}
ABSL_MUST_USE_RESULT bool TryLock() RTC_EXCLUSIVE_TRYLOCK_FUNCTION(true) {
return TryEnterCriticalSection(&critical_section_) != FALSE;
}
void AssertHeld() const RTC_ASSERT_EXCLUSIVE_LOCK() {}
void Unlock() RTC_UNLOCK_FUNCTION() {
LeaveCriticalSection(&critical_section_);
}
private:
CRITICAL_SECTION critical_section_;
};
} // namespace webrtc
#endif // #if defined(WEBRTC_WIN)
#endif // RTC_BASE_SYNCHRONIZATION_MUTEX_CRITICAL_SECTION_H_
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