/****************************************************************************
**
** Copyright (C) 1992-2004 Trolltech AS. All rights reserved.
**
** This file is part of the core module of the Qt Toolkit.
**
** 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.
**
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**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
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** not clear to you.
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** 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 QREADWRITELOCK_P_H
#define QREADWRITELOCK_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of qreadwritelock_unix.cpp and qreadwritelock_win.cpp.  This header file may change
// from version to version without notice, or even be removed.
//
// We mean it.
//

#ifdef Q_OS_UNIX
struct QReadWriteLockPrivate
{
    int maxReaders;
    QAtomic accessCount;
    QAtomic waitingWriters;
    int waitingReaders; //waitingReaders is protected by a mutex, so it can be an int
    pthread_mutex_t mutex;
    pthread_cond_t readerWait;
    pthread_cond_t writerWait;

};
#endif

#ifdef Q_OS_WIN32
struct QReadWriteLockPrivate
{
    volatile int accessCount;
    int maxReaders;
    QAtomic waitingWriters;
    HANDLE readerWait;
    HANDLE writerWait;
};
#endif

#endif
