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kabc

lock.h

00001 /*
00002     This file is part of libkabc.
00003 
00004     Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org>
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public License
00017     along with this library; see the file COPYING.LIB.  If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 #ifndef KABC_LOCK_H
00022 #define KABC_LOCK_H
00023 
00024 #include "kabc_export.h"
00025 #include <QtCore/QString>
00026 #include <QtCore/QObject>
00027 
00028 namespace KABC {
00029 
00034 class KABC_EXPORT Lock : public QObject
00035 {
00036     Q_OBJECT
00037   public:
00044     Lock( const QString &identifier );
00045 
00049     ~Lock();
00050 
00054     virtual bool lock();
00055 
00059     virtual bool unlock();
00060 
00064     virtual QString error() const;
00065 
00072     QString lockFileName() const;
00073 
00085     static bool readLockFile( const QString &filename, int &pid, QString &app );
00086 
00095     static bool writeLockFile( const QString &filename );
00096 
00100     static QString locksDir();
00101 
00102   Q_SIGNALS:
00106     void locked();
00110     void unlocked();
00111 
00112   private:
00113     class Private;
00114     Private *const d;
00115 };
00116 
00117 }
00118 
00119 #endif

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