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src/qt/include/qthread.h
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00001 /****************************************************************************
00002 ** $Id: qt/qthread.h   3.3.8   edited Jan 11 14:38 $
00003 **
00004 ** Definition of QThread class
00005 **
00006 ** Created : 931107
00007 **
00008 ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
00009 **
00010 ** This file is part of the kernel 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 QTHREAD_H
00039 #define QTHREAD_H
00040 
00041 #if defined(QT_THREAD_SUPPORT)
00042 
00043 #ifndef QT_H
00044 #include "qwindowdefs.h"
00045 #ifndef QT_NO_COMPAT
00046 #include "qmutex.h"
00047 #include "qsemaphore.h"
00048 #include "qwaitcondition.h"
00049 #endif // QT_NO_COMPAT
00050 #endif // QT_H
00051 
00052 #include <limits.h>
00053 
00054 class QThreadInstance;
00055 
00056 class Q_EXPORT QThread : public Qt
00057 {
00058 public:
00059     static Qt::HANDLE currentThread();
00060 
00061 #ifndef QT_NO_COMPAT
00062     static void postEvent( QObject *,QEvent * );
00063 #endif
00064 
00065     static void initialize();
00066     static void cleanup();
00067 
00068     static void exit();
00069 
00070 #ifdef Q_QDOC
00071     QThread( unsigned int stackSize = 0 );
00072 #else
00073     QThread( unsigned int stackSize );
00074     QThread();
00075 #endif
00076 
00077     virtual ~QThread();
00078 
00079     // default argument causes thread to block indefinately
00080     bool wait( unsigned long time = ULONG_MAX );
00081 
00082     enum Priority {
00083         IdlePriority,
00084 
00085         LowestPriority,
00086         LowPriority,
00087         NormalPriority,
00088         HighPriority,
00089         HighestPriority,
00090 
00091         TimeCriticalPriority,
00092 
00093         InheritPriority
00094     };
00095 
00096 #ifdef Q_QDOC
00097     void start( Priority = InheritPriority );
00098 #else
00099     void start( Priority );
00100     void start();
00101 #endif
00102 
00103     void terminate();
00104 
00105     bool finished() const;
00106     bool running() const;
00107 
00108 protected:
00109     virtual void run() = 0;
00110 
00111     static void sleep( unsigned long );
00112     static void msleep( unsigned long );
00113     static void usleep( unsigned long );
00114 
00115 private:
00116     QThreadInstance * d;
00117     friend class QThreadInstance;
00118 
00119 #if defined(Q_DISABLE_COPY)
00120     QThread( const QThread & );
00121     QThread &operator=( const QThread & );
00122 #endif // Q_DISABLE_COPY
00123 };
00124 
00125 #endif // QT_THREAD_SUPPORT
00126 
00127 #endif // QTHREAD_H
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