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# qthread.h

This is the verbatim text of the qthread.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/src/kernel/qthread.h   2.3.1   edited 2001-01-26 $
    **
    ** Definition of QThread class
    **
    ** Created : 931107
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QTHREAD_H
    #define QTHREAD_H

    #ifndef QT_H
    #include <qwindowdefs.h>
    #endif // QT_H

    #if defined(QT_THREAD_SUPPORT)

    class QMutexPrivate;

    const int Q_MUTEX_NORMAL = 0;
    const int Q_MUTEX_RECURSIVE = 1;

    class Q_EXPORT QMutex : public Qt
    {
        friend class QWaitCondition;
        friend class QWaitConditionPrivate;

    public:
        QMutex(bool recursive = FALSE);
        virtual ~QMutex();

        void lock();
        void unlock();
        bool locked();

    private:
        QMutexPrivate * d;

    #if defined(Q_DISABLE_COPY)
        QMutex( const QMutex & );
        QMutex &operator=( const QMutex & );
    #endif
    };

    class QThreadPrivate;

    class Q_EXPORT QThread : public Qt
    {
        friend class QThreadPrivate;
    public:
        static HANDLE currentThread();
        static void postEvent( QObject *,QEvent * );

        static void exit();

        QThread();
        virtual ~QThread();

        // default argument causes thread to block indefinately
        bool wait( unsigned long time = ULONG_MAX );

        void start();

        bool finished() const;
        bool running() const;

    protected:
        virtual void run() = 0;

        static void sleep( unsigned long );
        static void msleep( unsigned long );
        static void usleep( unsigned long );

    private:
        QThreadPrivate * d;

    #if defined(Q_DISABLE_COPY)
        QThread( const QThread & );
        QThread &operator=( const QThread & );
    #endif
    };

    class QWaitConditionPrivate;

    class Q_EXPORT QWaitCondition : public Qt
    {
    public:
        QWaitCondition();
        virtual ~QWaitCondition();

        // default argument causes thread to block indefinately
        bool wait( unsigned long time = ULONG_MAX );
        bool wait( QMutex *mutex, unsigned long time = ULONG_MAX );

        void wakeOne();
        void wakeAll();

    private:
        QWaitConditionPrivate * d;

    #if defined(Q_DISABLE_COPY)
        QWaitCondition( const QWaitCondition & );
        QWaitCondition &operator=( const QWaitCondition & );
    #endif
    };

    class QSemaphorePrivate;

    class Q_EXPORT QSemaphore : public Qt
    {
    public:
        QSemaphore( int );
        virtual ~QSemaphore();

        int available() const;
        int total() const;

        // postfix operators
        int operator++(int);
        int operator--(int);

        int operator+=(int);
        int operator-=(int);

    private:
        QSemaphorePrivate *d;

    #if defined(Q_DISABLE_COPY)
        QSemaphore(const QSemaphore &);
        QSemaphore &operator=(const QSemaphore &);
    #endif
    };

    #endif

    #endif