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#ifndef QMUTEX_P_H
#define QMUTEX_P_H

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

#include <QtCore/qglobal.h>
#include <QtCore/qnamespace.h>
#include <QtCore/qmutex.h>

#if defined(Q_OS_MAC)
# include <mach/semaphore.h>
#endif

QT_BEGIN_NAMESPACE

class QMutexPrivate : public QMutexData {
public:
    QMutexPrivate(QMutex::RecursionMode mode);
    ~QMutexPrivate();

    bool wait(int timeout = -1);
    void wakeUp();

    // 1ms = 1000000ns
    enum { MaximumSpinTimeThreshold = 1000000 };
    volatile qint64 maximumSpinTime;
    volatile qint64 averageWaitTime;
    Qt::HANDLE owner;
    uint count;

#if defined(Q_OS_MAC)
    semaphore_t mach_semaphore;
#elif defined(Q_OS_UNIX) && !defined(Q_OS_LINUX)
    volatile bool wakeup;
    pthread_mutex_t mutex;
    pthread_cond_t cond;
#elif defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
    HANDLE event;
#endif
};

inline QMutexData::QMutexData(QMutex::RecursionMode mode)
    : recursive(mode == QMutex::Recursive)
{}

inline QMutexData::~QMutexData() {}

QT_END_NAMESPACE

#endif // QMUTEX_P_H