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/interface/rw_lock_wrapper.h" 15#include "webrtc/typedefs.h" 16 17namespace webrtc { 18 19class CriticalSectionWrapper; 20class ConditionVariableWrapper; 21 22class RWLockGeneric : public RWLockWrapper { 23 public: 24 RWLockGeneric(); 25 virtual ~RWLockGeneric(); 26 27 virtual void AcquireLockExclusive() OVERRIDE; 28 virtual void ReleaseLockExclusive() OVERRIDE; 29 30 virtual void AcquireLockShared() OVERRIDE; 31 virtual 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