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00001 /**************************************************************************** 00002 ** $Id: qt/qmutex.h 3.3.8 edited Jan 11 14:38 $ 00003 ** 00004 ** Definition of QMutex class 00005 ** 00006 ** Created : 931107 00007 ** 00008 ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. 00009 ** 00010 ** This file is part of the tools module of the Qt GUI Toolkit. 00011 ** 00012 ** This file may be distributed under the terms of the Q Public License 00013 ** as defined by Trolltech ASA of Norway and appearing in the file 00014 ** LICENSE.QPL included in the packaging of this file. 00015 ** 00016 ** This file may be distributed and/or modified under the terms of the 00017 ** GNU General Public License version 2 as published by the Free Software 00018 ** Foundation and appearing in the file LICENSE.GPL included in the 00019 ** packaging of this file. 00020 ** 00021 ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition 00022 ** licenses may use this file in accordance with the Qt Commercial License 00023 ** Agreement provided with the Software. 00024 ** 00025 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 00026 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 00027 ** 00028 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for 00029 ** information about Qt Commercial License Agreements. 00030 ** See http://www.trolltech.com/qpl/ for QPL licensing information. 00031 ** See http://www.trolltech.com/gpl/ for GPL licensing information. 00032 ** 00033 ** Contact info@trolltech.com if any conditions of this licensing are 00034 ** not clear to you. 00035 ** 00036 **********************************************************************/ 00037 00038 #ifndef QMUTEX_H 00039 #define QMUTEX_H 00040 00041 #ifndef QT_H 00042 #include "qglobal.h" 00043 #endif // QT_H 00044 00045 #if defined(QT_THREAD_SUPPORT) 00046 00047 class QMutexPrivate; 00048 00049 const int Q_MUTEX_NORMAL = 0; 00050 const int Q_MUTEX_RECURSIVE = 1; 00051 00052 class Q_EXPORT QMutex 00053 { 00054 friend class QThread; 00055 friend class QWaitCondition; 00056 friend class QWaitConditionPrivate; 00057 00058 public: 00059 QMutex(bool recursive = FALSE); 00060 virtual ~QMutex(); 00061 00062 void lock(); 00063 void unlock(); 00064 bool locked(); 00065 bool tryLock(); 00066 00067 private: 00068 QMutexPrivate * d; 00069 00070 #if defined(Q_DISABLE_COPY) 00071 QMutex( const QMutex & ); 00072 QMutex &operator=( const QMutex & ); 00073 #endif 00074 }; 00075 00076 class Q_EXPORT QMutexLocker 00077 { 00078 public: 00079 QMutexLocker( QMutex * ); 00080 ~QMutexLocker(); 00081 00082 QMutex *mutex() const; 00083 00084 private: 00085 QMutex *mtx; 00086 00087 #if defined(Q_DISABLE_COPY) 00088 QMutexLocker( const QMutexLocker & ); 00089 QMutexLocker &operator=( const QMutexLocker & ); 00090 #endif 00091 }; 00092 00093 inline QMutexLocker::QMutexLocker( QMutex *m ) 00094 : mtx( m ) 00095 { 00096 if ( mtx ) mtx->lock(); 00097 } 00098 00099 inline QMutexLocker::~QMutexLocker() 00100 { 00101 if ( mtx ) mtx->unlock(); 00102 } 00103 00104 inline QMutex *QMutexLocker::mutex() const 00105 { 00106 return mtx; 00107 } 00108 00109 #endif 00110 00111 #endif