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/* -*- mode: c++ -*-
*/
/*
GIFT, a flexible content based image retrieval system.
Copyright (C) 1998, 1999, 2000, 2001, 2002, CUI University of Geneva
Copyright (C) 2003, 2004 Bayreuth University
2005 Bamberg University
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// -*- mode: c++ -*-
#ifndef _CMUTEX
#define _CMUTEX
#include "libMRML/include/uses-declarations.h"
#ifdef __GIFT_USES_THREADS__
#include <pthread.h>
#endif
/**
This class offers an abstraction from the locking method used.
The methods are defined as const, although, of course, the mMutex
will change state during each method call
*/
class CMutex{
#ifdef __GIFT_USES_THREADS__
/** the mutex if needed */
mutable pthread_mutex_t mMutex;
/** attributes of the mutex */
mutable pthread_mutexattr_t mMutexAttribute;
#endif
public:
/** constructor */
CMutex();
/** lock the mutex */
void lock()const;
/**
unlock the mutex
*/
void unlock()const;
};
#endif
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