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-/****************************************************************************
-**
-** Definition of TQLock class. This manages interprocess locking
-**
-** Created : 20000406
-**
-** Copyright (C) 2000-2008 Trolltech ASA. All rights reserved.
-**
-** This file is part of the kernel module of the TQt GUI Toolkit.
-**
-** This file may be used under the terms of the GNU General
-** Public License versions 2.0 or 3.0 as published by the Free
-** Software Foundation and appearing in the files LICENSE.GPL2
-** and LICENSE.GPL3 included in the packaging of this file.
-** Alternatively you may (at your option) use any later version
-** of the GNU General Public License if such license has been
-** publicly approved by Trolltech ASA (or its successors, if any)
-** and the KDE Free TQt Foundation.
-**
-** Please review the following information to ensure GNU General
-** Public Licensing requirements will be met:
-** http://trolltech.com/products/qt/licenses/licensing/opensource/.
-** If you are unsure which license is appropriate for your use, please
-** review the following information:
-** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
-** or contact the sales department at sales@trolltech.com.
-**
-** Licensees holding valid TQt Commercial licenses may use this file in
-** accordance with the TQt Commercial License Agreement provided with
-** the Software.
-**
-** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
-** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
-** herein.
-**
-**********************************************************************/
-
-#ifndef TQLOCK_P_H
-#define TQLOCK_P_H
-
-//
-// W A R N I N G
-// -------------
-//
-// This file is not part of the TQt API. This header file may
-// change from version to version without notice, or even be
-// removed.
-//
-// We mean it.
-//
-//
-
-#ifndef TQT_H
-#include "tqstring.h"
-#endif // TQT_H
-
-class TQLockData;
-
-class TQLock
-{
-public:
- TQLock( const TQString &filename, char id, bool create = FALSE );
- ~TQLock();
-
- enum Type { Read, Write };
-
- bool isValid() const;
- void lock( Type type );
- void unlock();
- bool locked() const;
-
-private:
- Type type;
- TQLockData *data;
-};
-
-
-// Nice class for ensuring the lock is released.
-// Just create one on the stack and the lock is automatically released
-// when TQLockHolder is destructed.
-class TQLockHolder
-{
-public:
- TQLockHolder( TQLock *l, TQLock::Type type ) : qlock(l) {
- qlock->lock( type );
- }
- ~TQLockHolder() { if ( locked() ) qlock->unlock(); }
-
- void lock( TQLock::Type type ) { qlock->lock( type ); }
- void unlock() { qlock->unlock(); }
- bool locked() const { return qlock->locked(); }
-
-private:
- TQLock *qlock;
-};
-
-#endif
-