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
37
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 }
80
84 void lock()
85 {
86 assert(m_locked == false);
87 m_mutex->acquire();
88 m_locked = true;
89 }
90
94 void release()
95 {
96 assert(m_locked == true);
97 m_mutex->release();
98 m_locked = false;
99 }
100
104 : m_mutex(arg.m_mutex), m_locked(arg.m_locked)
105 {
106 arg.m_locked = false;
107 }
108
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
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.