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qsemaphore.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/

#ifndef QSEMAPHORE_H
#define QSEMAPHORE_H

#include <QtCore/qglobal.h>

QT_BEGIN_HEADER

QT_MODULE(Core)

#ifndef QT_NO_THREAD

class QSemaphorePrivate;

00037 class Q_CORE_EXPORT QSemaphore
{
public:
    explicit QSemaphore(int n = 0);
    ~QSemaphore();

    void acquire(int n = 1);
    bool tryAcquire(int n = 1);

    void release(int n = 1);

    int available() const;

private:
    Q_DISABLE_COPY(QSemaphore)

    QSemaphorePrivate *d;
};

#endif // QT_NO_THREAD

QT_END_HEADER

#endif // QSEMAPHORE_H

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