You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
2.0 KiB
89 lines
2.0 KiB
/*
|
|
This file is part of libkabc.
|
|
|
|
Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with this library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA.
|
|
*/
|
|
#ifndef KABC_LOCK_H
|
|
#define KABC_LOCK_H
|
|
|
|
#include <qstring.h>
|
|
#include <qobject.h>
|
|
|
|
#include <kdelibs_export.h>
|
|
|
|
namespace KABC {
|
|
|
|
/**
|
|
This class provides locking functionality for a file, directory or an
|
|
arbitrary string-represented resource.
|
|
*/
|
|
class KABC_EXPORT Lock : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
/**
|
|
Constructor.
|
|
|
|
@param identifier An identifier for the resource to be locked, e.g. a file
|
|
name.
|
|
*/
|
|
Lock( const QString &identifier );
|
|
|
|
/**
|
|
Destruct lock object. This also removes the lock on the resource.
|
|
*/
|
|
~Lock();
|
|
|
|
/**
|
|
Lock resource.
|
|
*/
|
|
virtual bool lock();
|
|
|
|
/**
|
|
Unlock resource.
|
|
*/
|
|
virtual bool unlock();
|
|
|
|
virtual QString error() const;
|
|
|
|
QString lockFileName() const;
|
|
|
|
static bool readLockFile( const QString &filename, int &pid, QString &app );
|
|
static bool writeLockFile( const QString &filename );
|
|
|
|
static QString locksDir();
|
|
|
|
signals:
|
|
void locked();
|
|
void unlocked();
|
|
|
|
private:
|
|
QString mIdentifier;
|
|
|
|
QString mLockUniqueName;
|
|
|
|
QString mError;
|
|
|
|
class Private;
|
|
Private *d;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|