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_EVENT_POSIX_H_
12 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
13 
14 #include "event_wrapper.h"
15 
16 #include <pthread.h>
17 #include <time.h>
18 
19 #include "thread_wrapper.h"
20 
21 namespace webrtc {
22 enum State
23 {
24     kUp = 1,
25     kDown = 2
26 };
27 
28 class EventPosix : public EventWrapper
29 {
30 public:
31     static EventWrapper* Create();
32 
33     virtual ~EventPosix();
34 
35     virtual EventTypeWrapper Wait(unsigned long maxTime);
36     virtual bool Set();
37     virtual bool Reset();
38 
39     virtual bool StartTimer(bool periodic, unsigned long time);
40     virtual bool StopTimer();
41 
42 private:
43     EventPosix();
44     int Construct();
45 
46     static bool Run(ThreadObj obj);
47     bool Process();
48     EventTypeWrapper Wait(timespec& tPulse);
49 
50 
51 private:
52     pthread_cond_t  cond;
53     pthread_mutex_t mutex;
54 
55     ThreadWrapper* _timerThread;
56     EventPosix*    _timerEvent;
57     timespec       _tCreate;
58 
59     bool          _periodic;
60     unsigned long _time;  // In ms
61     unsigned long _count;
62     State         _state;
63 };
64 } // namespace webrtc
65 
66 #endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
67