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89 lines
2.0 KiB
89 lines
2.0 KiB
/*
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This file is part of libkabc.
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Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef KABC_LOCK_H
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#define KABC_LOCK_H
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#include <tqstring.h>
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#include <tqobject.h>
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#include <kdelibs_export.h>
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namespace KABC {
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/**
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This class provides locking functionality for a file, directory or an
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arbitrary string-represented resource.
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*/
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class KABC_EXPORT Lock : public TQObject
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{
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Q_OBJECT
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public:
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/**
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Constructor.
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@param identifier An identifier for the resource to be locked, e.g. a file
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name.
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*/
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Lock( const TQString &identifier );
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/**
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Destruct lock object. This also removes the lock on the resource.
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*/
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~Lock();
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/**
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Lock resource.
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*/
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virtual bool lock();
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/**
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Unlock resource.
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*/
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virtual bool unlock();
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virtual TQString error() const;
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TQString lockFileName() const;
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static bool readLockFile( const TQString &filename, int &pid, TQString &app );
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static bool writeLockFile( const TQString &filename );
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static TQString locksDir();
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signals:
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void locked();
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void unlocked();
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private:
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TQString mIdentifier;
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TQString mLockUniqueName;
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TQString mError;
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class Private;
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Private *d;
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};
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}
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#endif
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