/usr/include/kabc/lock.h is in kdepimlibs5-dev 4:4.14.2-2+deb8u2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /*
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 "kabc_export.h"
#include <QtCore/QString>
#include <QtCore/QObject>
namespace KABC {
/**
This class provides locking functionality for a file, directory or an
arbitrary string-represented resource.
*/
class KABC_DEPRECATED_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();
/**
Returns the lastest error message.
*/
virtual QString error() const;
/**
Returns the path of the lock file.
The file will be located in the directory returned by locksDir()
and have the file extension @c .lock
*/
QString lockFileName() const;
/**
Reads the process ID and the application name from a lock file.
@param filename The lock file to read from. Full path or relative to
current working directory
@param pid The variable the process ID will be read into
@param app The variable the application name will be read into
@return @c false if @p filename could not be read, otherwise @c true, even
when reading the values fails
*/
static bool readLockFile( const QString &filename, int &pid, QString &app );
/**
Writes the process ID and the application name to a lock file.
@param filename The lock file to write to
@return @c false if the file could not be opened for writing, otherwise
@c true
*/
static bool writeLockFile( const QString &filename );
/**
Returns the path of the directory where locks are created.
*/
static QString locksDir();
Q_SIGNALS:
/**
Emitted after the lock has been locked.
*/
void locked();
/**
Emitted after the lock has been unlocked.
*/
void unlocked();
private:
class Private;
Private *const d;
};
}
#endif
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