blocxx
NonRecursiveMutexLock.hpp
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32 
33 
38 #ifndef BLOCXX_NON_RECURSIVE_MUTEXLOCK_HPP_INCLUDE_GUARD_
39 #define BLOCXX_NON_RECURSIVE_MUTEXLOCK_HPP_INCLUDE_GUARD_
40 #include "blocxx/BLOCXX_config.h"
41 #include "blocxx/NonRecursiveMutex.hpp"
42 #include <cassert>
43 
44 namespace BLOCXX_NAMESPACE
45 {
46 
48 
52 class BLOCXX_COMMON_API NonRecursiveMutexLock
53 {
54 public:
58  explicit NonRecursiveMutexLock(NonRecursiveMutex& mutex, bool initially_locked=true)
59  : m_mutex(&mutex), m_locked(false)
60  {
61  if (initially_locked)
62  {
63  lock();
64  }
65  }
66  ~NonRecursiveMutexLock()
67  {
68  try
69  {
70  if (m_locked)
71  {
72  release();
73  }
74  }
75  catch (...)
76  {
77  // don't let exceptions escape
78  }
79  }
84  void lock()
85  {
86  assert(m_locked == false);
87  m_mutex->acquire();
88  m_locked = true;
89  }
94  void release()
95  {
96  assert(m_locked == true);
97  m_mutex->release();
98  m_locked = false;
99  }
103  NonRecursiveMutexLock(const NonRecursiveMutexLock& arg)
104  : m_mutex(arg.m_mutex), m_locked(arg.m_locked)
105  {
106  arg.m_locked = false;
107  }
111  bool isLocked() const
112  {
113  return m_locked;
114  }
115  /*
116  NonRecursiveMutexLock& operator= (const NonRecursiveMutexLock& arg)
117  {
118  release();
119  m_locked = arg.m_locked;
120  m_mutex = arg.m_mutex;
121  arg.m_locked = false;
122  return *this;
123  }
124  */
125 private:
126  NonRecursiveMutex* m_mutex;
127  mutable bool m_locked;
128  friend class Condition;
129 };
130 
131 } // end namespace BLOCXX_NAMESPACE
132 
133 #endif
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