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#ifndef QSYSTEMLOCK_P_H

#define QSYSTEMLOCK_P_H

#ifndef QT_NO_SYSTEMLOCK

#include "qsystemlock.h"

#include "private/qsharedmemory_p.h"

#ifndef Q_OS_WINCE

#include <sys/types.h>

#endif

#define MAX_LOCKS 64

class QSystemLockPrivate

{

public:

    QSystemLockPrivate();

    QString makeKeyFileName()

    {

        return QSharedMemoryPrivate::makePlatformSafeKey(key, QLatin1String("qipc_systemlock_"));

    }

    void setErrorString(const QString &function);

#ifdef Q_OS_WIN

    HANDLE handle();

    bool lock(HANDLE, int count);

    bool unlock(HANDLE, int count);

#else

    key_t handle();

#endif

    void cleanHandle();

    enum Operation {

        Lock,

        Unlock

    };

    bool modifySemaphore(Operation op, QSystemLock::LockMode mode = QSystemLock::ReadOnly);

    QString key;

    QString fileName;

#ifdef Q_OS_WIN

    HANDLE semaphore;

    HANDLE semaphoreLock;

#else

    int semaphore;

#endif

    int lockCount;

    QSystemLock::LockMode lockedMode;

    QSystemLock::SystemLockError error;

    QString errorString;

private:

#ifndef Q_OS_WIN

    key_t unix_key;

    bool createdFile;

    bool createdSemaphore;

#endif

};

#endif // QT_NO_SYSTEMLOCK

#endif // QSYSTEMLOCK_P_H