1 /* 2 * Copyright (c) 2011 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 WEBRTC_SYSTEM_WRAPPERS_SOURCE_RW_LOCK_GENERIC_H_ 12 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_RW_LOCK_GENERIC_H_ 13 14 #include "webrtc/system_wrappers/include/rw_lock_wrapper.h" 15 #include "webrtc/typedefs.h" 16 17 namespace webrtc { 18 19 class CriticalSectionWrapper; 20 class ConditionVariableWrapper; 21 22 class RWLockGeneric : public RWLockWrapper { 23 public: 24 RWLockGeneric(); 25 ~RWLockGeneric() override; 26 27 void AcquireLockExclusive() override; 28 void ReleaseLockExclusive() override; 29 30 void AcquireLockShared() override; 31 void ReleaseLockShared() override; 32 33 private: 34 CriticalSectionWrapper* critical_section_; 35 ConditionVariableWrapper* read_condition_; 36 ConditionVariableWrapper* write_condition_; 37 38 int readers_active_; 39 bool writer_active_; 40 int readers_waiting_; 41 int writers_waiting_; 42 }; 43 44 } // namespace webrtc 45 46 #endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_RW_LOCK_GENERIC_H_ 47
