chromium/third_party/webrtc/rtc_base/synchronization/mutex.h

/*
 *  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_H_
#define RTC_BASE_SYNCHRONIZATION_MUTEX_H_

#include <atomic>

#include "absl/base/attributes.h"
#include "absl/base/const_init.h"
#include "rtc_base/checks.h"
#include "rtc_base/thread_annotations.h"

#if defined(WEBRTC_ABSL_MUTEX)
#include "rtc_base/synchronization/mutex_abseil.h"  // nogncheck
#elif defined(WEBRTC_WIN)
#include "rtc_base/synchronization/mutex_critical_section.h"
#elif defined(WEBRTC_POSIX)
#include "rtc_base/synchronization/mutex_pthread.h"
#else
#error Unsupported platform.
#endif

namespace webrtc {

// The Mutex guarantees exclusive access and aims to follow Abseil semantics
// (i.e. non-reentrant etc).
class RTC_LOCKABLE Mutex final { … };

// MutexLock, for serializing execution through a scope.
class RTC_SCOPED_LOCKABLE MutexLock final { … };

}  // namespace webrtc

#endif  // RTC_BASE_SYNCHRONIZATION_MUTEX_H_