/******************************************************************************** Copyright (C) 1992-2006 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.******************************************************************************/#ifndef QSEMAPHORE_H#define QSEMAPHORE_H#include <QtCore/qglobal.h>QT_BEGIN_HEADERQT_MODULE(Core)#ifndef QT_NO_THREADclass QSemaphorePrivate;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_THREADQT_END_HEADER#endif // QSEMAPHORE_H