1/*
2 *  Copyright (c) 2013 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_CONDITION_VARIABLE_EVENT_WIN_H_
12#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_EVENT_WIN_H_
13
14#include <windows.h>
15
16#include "webrtc/system_wrappers/interface/condition_variable_wrapper.h"
17
18namespace webrtc {
19
20class ConditionVariableEventWin : public ConditionVariableWrapper {
21 public:
22  ConditionVariableEventWin();
23  virtual ~ConditionVariableEventWin();
24
25  void SleepCS(CriticalSectionWrapper& crit_sect);
26  bool SleepCS(CriticalSectionWrapper& crit_sect, unsigned long max_time_inMS);
27  void Wake();
28  void WakeAll();
29
30 private:
31  enum EventWakeUpType {
32    WAKEALL_0   = 0,
33    WAKEALL_1   = 1,
34    WAKE        = 2,
35    EVENT_COUNT = 3
36  };
37
38  unsigned int     num_waiters_[2];
39  EventWakeUpType  eventID_;
40  CRITICAL_SECTION num_waiters_crit_sect_;
41  HANDLE           events_[EVENT_COUNT];
42};
43
44}  // namespace webrtc
45
46#endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_EVENT_WIN_H_
47