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