/****************************************************************************
**
** Definition of QSemaphore class
**
** Created : 931107
**
** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
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** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
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** included in the packaging of this file.  Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
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**********************************************************************/

#ifndef QSEMAPHORE_H
#define QSEMAPHORE_H

#ifndef QT_H
#include "qglobal.h"
#endif // QT_H

#if defined(QT_THREAD_SUPPORT)

class QSemaphorePrivate;

class Q_EXPORT QSemaphore
{
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);

    bool tryAccess(int);

private:
    QSemaphorePrivate *d;

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

#endif

#endif