blocxx
NonRecursiveMutexLock.hpp
Go to the documentation of this file.
1/*******************************************************************************
2* Copyright (C) 2005, Vintela, Inc. All rights reserved.
3* Copyright (C) 2006, Novell, Inc. All rights reserved.
4*
5* Redistribution and use in source and binary forms, with or without
6* modification, are permitted provided that the following conditions are met:
7*
8* * Redistributions of source code must retain the above copyright notice,
9* this list of conditions and the following disclaimer.
10* * Redistributions in binary form must reproduce the above copyright
11* notice, this list of conditions and the following disclaimer in the
12* documentation and/or other materials provided with the distribution.
13* * Neither the name of
14* Vintela, Inc.,
15* nor Novell, Inc.,
16* nor the names of its contributors or employees may be used to
17* endorse or promote products derived from this software without
18* specific prior written permission.
19*
20* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30* POSSIBILITY OF SUCH DAMAGE.
31*******************************************************************************/
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"
42#include <cassert>
43
44namespace BLOCXX_NAMESPACE
45{
46
48
52class BLOCXX_COMMON_API NonRecursiveMutexLock
53{
54public:
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 }
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 }
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 */
125private:
127 mutable bool m_locked;
128 friend class Condition;
129};
130
131} // end namespace BLOCXX_NAMESPACE
132
133#endif
NonRecursiveMutex m_mutex
The Condition class represents a synchronization device that allows threads to suspend execution and ...
Definition Condition.hpp:63
Note that descriptions of what exceptions may be thrown assumes that object is used correctly,...
Note that descriptions of what exceptions may be thrown assumes that object is used correctly,...
NonRecursiveMutexLock(const NonRecursiveMutexLock &arg)
NonRecursiveMutexLock(NonRecursiveMutex &mutex, bool initially_locked=true)
Taken from RFC 1321.