Mac-4.7.4/src/corelib/thread/qreadwritelock_p.h

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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 the implementation.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtCore/qglobal.h>
#include <QtCore/qhash.h>

#ifndef QT_NO_THREAD

QT_BEGIN_NAMESPACE

struct QReadWriteLockPrivate
{
    QReadWriteLockPrivate(QReadWriteLock::RecursionMode recursionMode)
        : accessCount(0), waitingReaders(0), waitingWriters(0),
          recursive(recursionMode == QReadWriteLock::Recursive), currentWriter(0)
    { }

    QMutex mutex;
    QWaitCondition readerWait;
    QWaitCondition writerWait;

    int accessCount;
    int waitingReaders;
    int waitingWriters;

    bool recursive;
    Qt::HANDLE currentWriter;
    QHash<Qt::HANDLE, int> currentReaders;
};

QT_END_NAMESPACE

#endif // QT_NO_THREAD

#endif // QREADWRITELOCK_P_H