1 /* 2 * Copyright 2020 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef RTC_BASE_SYNCHRONIZATION_MUTEX_ABSEIL_H_ 12 #define RTC_BASE_SYNCHRONIZATION_MUTEX_ABSEIL_H_ 13 14 #include "absl/base/attributes.h" 15 #include "absl/synchronization/mutex.h" 16 #include "rtc_base/thread_annotations.h" 17 18 namespace webrtc { 19 20 class RTC_LOCKABLE MutexImpl final { 21 public: 22 MutexImpl() = default; 23 MutexImpl(const MutexImpl&) = delete; 24 MutexImpl& operator=(const MutexImpl&) = delete; 25 Lock()26 void Lock() RTC_EXCLUSIVE_LOCK_FUNCTION() { mutex_.Lock(); } TryLock()27 ABSL_MUST_USE_RESULT bool TryLock() RTC_EXCLUSIVE_TRYLOCK_FUNCTION(true) { 28 return mutex_.TryLock(); 29 } AssertHeld()30 void AssertHeld() const RTC_ASSERT_EXCLUSIVE_LOCK() { 31 #if RTC_DCHECK_IS_ON 32 mutex_.AssertHeld(); 33 #endif 34 } Unlock()35 void Unlock() RTC_UNLOCK_FUNCTION() { mutex_.Unlock(); } 36 37 private: 38 absl::Mutex mutex_; 39 }; 40 41 } // namespace webrtc 42 43 #endif // RTC_BASE_SYNCHRONIZATION_MUTEX_ABSEIL_H_ 44