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Mutex.h
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1 //
2 // Copyright (c) 2009, Markus Rickert
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29 
30 #ifndef _RL_UTIL_MUTEX_H_
31 #define _RL_UTIL_MUTEX_H_
32 
33 #ifdef WIN32
34 #include <windows.h>
35 #else // WIN32
36 #include <errno.h>
37 #include <pthread.h>
38 #endif // WIN32
39 
40 namespace rl
41 {
42  namespace util
43  {
44  class Mutex
45  {
46  public:
47  explicit Mutex() :
48  mutex()
49  {
50 #ifdef WIN32
51  InitializeCriticalSection(&(*this).mutex);
52 #else // WIN32
53  pthread_mutex_init(&(*this).mutex, NULL);
54 #endif // WIN32
55  }
56 
57  virtual ~Mutex()
58  {
59 #ifdef WIN32
60  DeleteCriticalSection(&(*this).mutex);
61 #else // WIN32
62  pthread_mutex_destroy(&(*this).mutex);
63 #endif // WIN32
64  }
65 
67  {
68  (*this).unlock();
69  return (*this);
70  }
71 
73  {
74  (*this).lock();
75  return (*this);
76  }
77 
78  void lock()
79  {
80 #ifdef WIN32
81  EnterCriticalSection(&(*this).mutex);
82 #else // WIN32
83  pthread_mutex_lock(&(*this).mutex);
84 #endif // WIN32
85  }
86 
87  bool tryLock()
88  {
89 #ifdef WIN32
90  return TryEnterCriticalSection(&(*this).mutex) ? true : false;
91 #else // WIN32
92  return pthread_mutex_trylock(&(*this).mutex) == EBUSY ? false : true;
93 #endif // WIN32
94  }
95 
96  void unlock()
97  {
98 #ifdef WIN32
99  LeaveCriticalSection(&(*this).mutex);
100 #else // WIN32
101  pthread_mutex_unlock(&(*this).mutex);
102 #endif // WIN32
103  }
104 
105  protected:
106 
107  private:
108 #ifdef WIN32
109  CRITICAL_SECTION mutex;
110 #else // WIN32
111  pthread_mutex_t mutex;
112 #endif // WIN32
113  };
114  }
115 }
116 
117 #endif // _RL_UTIL_MUTEX_H_