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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/kernel/qlock_p.h
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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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 retquirements 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 QT_H
+#include "qstring.h"
+#endif // QT_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
+