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1 /*
2  *  Copyright 2004 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_BASE_EVENT_H__
12 #define WEBRTC_BASE_EVENT_H__
13 
14 #if defined(WEBRTC_WIN)
15 #include "webrtc/base/win32.h"  // NOLINT: consider this a system header.
16 #elif defined(WEBRTC_POSIX)
17 #include <pthread.h>
18 #else
19 #error "Must define either WEBRTC_WIN or WEBRTC_POSIX."
20 #endif
21 
22 #include "webrtc/base/basictypes.h"
23 
24 namespace rtc {
25 
26 class Event {
27  public:
28   static const int kForever = -1;
29 
30   Event(bool manual_reset, bool initially_signaled);
31   ~Event();
32 
33   void Set();
34   void Reset();
35 
36   // Wait for the event to become signaled, for the specified number of
37   // |milliseconds|.  To wait indefinetly, pass kForever.
38   bool Wait(int milliseconds);
39 
40  private:
41 #if defined(WEBRTC_WIN)
42   HANDLE event_handle_;
43 #elif defined(WEBRTC_POSIX)
44   pthread_mutex_t event_mutex_;
45   pthread_cond_t event_cond_;
46   const bool is_manual_reset_;
47   bool event_status_;
48 #endif
49 };
50 
51 }  // namespace rtc
52 
53 #endif  // WEBRTC_BASE_EVENT_H__
54