/****************************************************************************

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

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****************************************************************************/

#ifndef QWSSHAREDMEMORY_P_H

#define QWSSHAREDMEMORY_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qplatformdefs.h"

#include "QtCore/qstring.h"

QT_BEGIN_NAMESPACE

#if !defined(QT_NO_QWS_MULTIPROCESS)

class QWSSharedMemory {

public:

    QWSSharedMemory();

    ~QWSSharedMemory();

    void setPermissions(mode_t mode);

    int size() const;

    void *address() { return shmBase; }

    int id() const { return shmId; }

    void detach();

    bool create(int size);

    bool attach(int id);

    //bool create(int size, const QString &filename, char c = 'Q');

    //bool attach(const QString &filename, char c = 'Q');

// old API

    QWSSharedMemory(int, const QString &, char c = 'Q');

    void * base() { return address(); }

    bool create();

    void destroy();

    bool attach();

private:

    void *shmBase;

    int shmSize;

    QString shmFile;

    char character;

    int shmId;

    key_t key;

};

#endif // QT_NO_QWS_MULTIPROCESS

QT_END_NAMESPACE

#endif // QWSSHAREDMEMORY_P_H