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1 /*
2  *  Copyright (c) 2012 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_THREAD_POSIX_H_
12 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_THREAD_POSIX_H_
13 
14 #include "thread_wrapper.h"
15 #include <pthread.h>
16 
17 namespace webrtc {
18 
19 class CriticalSectionWrapper;
20 class EventWrapper;
21 
22 class ThreadPosix : public ThreadWrapper
23 {
24 public:
25     static ThreadWrapper* Create(ThreadRunFunction func, ThreadObj obj,
26                                  ThreadPriority prio, const char* threadName);
27 
28     ThreadPosix(ThreadRunFunction func, ThreadObj obj, ThreadPriority prio,
29                 const char* threadName);
30     ~ThreadPosix();
31 
32     // From ThreadWrapper
33     virtual void SetNotAlive();
34     virtual bool Start(unsigned int& id);
35     // Not implemented on Mac
36     virtual bool SetAffinity(const int* processorNumbers,
37                              unsigned int amountOfProcessors);
38     virtual bool Stop();
39     virtual bool Shutdown();
40 
41     void Run();
42 
43 private:
44     int Construct();
45 
46 private:
47     // processing function
48     ThreadRunFunction   _runFunction;
49     ThreadObj           _obj;
50 
51     // internal state
52     CriticalSectionWrapper* _crit_state;  // Protects _alive and _dead
53     bool                    _alive;
54     bool                    _dead;
55     ThreadPriority          _prio;
56     EventWrapper*           _event;
57 
58     // zero-terminated thread name string
59     char                    _name[kThreadMaxNameLength];
60     bool                    _setThreadName;
61 
62     // handle to thread
63 #if (defined(WEBRTC_LINUX) || defined(WEBRTC_ANDROID))
64     pid_t                   _pid;
65 #endif
66     pthread_attr_t          _attr;
67     pthread_t               _thread;
68 };
69 } // namespace webrtc
70 
71 #endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_THREAD_POSIX_H_
72