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_NATIVE_WIN_H_
12 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_NATIVE_WIN_H_
13 
14 #include <windows.h>
15 
16 #include "webrtc/system_wrappers/include/condition_variable_wrapper.h"
17 
18 namespace webrtc {
19 
20 #if !defined CONDITION_VARIABLE_INIT
21 typedef struct RTL_CONDITION_VARIABLE_ {
22   void* Ptr;
23 } RTL_CONDITION_VARIABLE, *PRTL_CONDITION_VARIABLE;
24 
25 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;
26 #endif
27 
28 typedef void (WINAPI* PInitializeConditionVariable)(PCONDITION_VARIABLE);
29 typedef BOOL (WINAPI* PSleepConditionVariableCS)(PCONDITION_VARIABLE,
30                                                  PCRITICAL_SECTION, DWORD);
31 typedef void (WINAPI* PWakeConditionVariable)(PCONDITION_VARIABLE);
32 typedef void (WINAPI* PWakeAllConditionVariable)(PCONDITION_VARIABLE);
33 
34 class ConditionVariableNativeWin : public ConditionVariableWrapper {
35  public:
36   static ConditionVariableWrapper* Create();
37   virtual ~ConditionVariableNativeWin();
38 
39   void SleepCS(CriticalSectionWrapper& crit_sect);
40   bool SleepCS(CriticalSectionWrapper& crit_sect, unsigned long max_time_inMS);
41   void Wake();
42   void WakeAll();
43 
44  private:
45   ConditionVariableNativeWin();
46 
47   bool Init();
48 
49   CONDITION_VARIABLE condition_variable_;
50 };
51 
52 }  // namespace webrtc
53 
54 #endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_NATIVE_WIN_H_
55