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 "rw_lock_wrapper.h" 15 16 namespace webrtc { 17 class CriticalSectionWrapper; 18 class ConditionVariableWrapper; 19 20 class RWLockWrapperGeneric : public RWLockWrapper 21 { 22 public: 23 RWLockWrapperGeneric(); 24 virtual ~RWLockWrapperGeneric(); 25 26 virtual void AcquireLockExclusive(); 27 virtual void ReleaseLockExclusive(); 28 29 virtual void AcquireLockShared(); 30 virtual void ReleaseLockShared(); 31 32 protected: 33 virtual int Init(); 34 35 private: 36 CriticalSectionWrapper* _critSectPtr; 37 ConditionVariableWrapper* _readCondPtr; 38 ConditionVariableWrapper* _writeCondPtr; 39 40 int _readersActive; 41 bool _writerActive; 42 int _readersWaiting; 43 int _writersWaiting; 44 }; 45 } // namespace webrtc 46 #endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_RW_LOCK_GENERIC_H_ 47