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/*************************************************************************
*
* $RCSfile: mutex.hxx,v $
*
* $Revision: 1.1.1.1 $
*
* last change: $Author: hr $ $Date: 2000-09-18 15:18:12 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef _VOS_MUTEX_HXX_
#define _VOS_MUTEX_HXX_
#ifndef _VOS_TYPES_HXX_
# include <vos/types.hxx>
#endif
#ifndef _VOS_OBJECT_HXX_
# include <vos/object.hxx>
#endif
#ifndef _OSL_MUTEX_H_
# include <osl/mutex.h>
#endif
#ifdef _USE_NAMESPACE
namespace vos
{
#endif
/** IMutex interface
@author Bernd Hofner
@version 1.0
*/
class IMutex
{
public:
/// Blocks if Mutex is already in use
virtual void SAL_CALL acquire()= 0;
// Tries to get the mutex without blocking.
virtual sal_Bool SAL_CALL tryToAcquire()= 0;
/// releases the mutex.
virtual void SAL_CALL release()= 0;
protected:
IMutex() { }
virtual ~IMutex() { }
};
// ----------------------------------------------------------
/** OMutex
@author Bernd Hofner
@version 1.0
*/
class OMutex : public OObject, public IMutex
{
VOS_DECLARE_CLASSINFO(VOS_NAMESPACE(OMutex, vos));
public:
static IMutex& SAL_CALL getGlobalMutex();
/// Creates mutex
OMutex();
/// Implicitly destroys mutex
virtual ~OMutex();
/// Blocks if Mutex is already in use
virtual void SAL_CALL acquire();
/** Tries to get the mutex without blocking.
@return True if mutex could be obtained, otherwise False
*/
virtual sal_Bool SAL_CALL tryToAcquire();
/// releases the mutex.
virtual void SAL_CALL release();
protected:
oslMutex m_Impl;
private:
// disable copy/assignment
OMutex(const OMutex&);
OMutex& SAL_CALL operator= (const OMutex&);
};
// *********************************************************************************
/** OGuard
@author Bernd Hofner
@version 1.0
*/
class OGuard
{
public:
/** Acquires mutex
@param pMutex pointer to mutex which is to be acquired */
OGuard(IMutex* pMutex)
: m_rMutex( *pMutex )
{ // only for compatible reasons
m_rMutex.acquire();
}
OGuard(IMutex & rMutex)
: m_rMutex( rMutex )
{
m_rMutex.acquire();
}
/** Releases mutex. */
virtual ~OGuard()
{
m_rMutex.release();
}
protected:
IMutex& m_rMutex;
};
/** A guard that can release the mutex with the clear method.
@author Bernd Hofner
@version 1.0
*/
class OClearableGuard
{
public:
/** Acquires mutex
@param pMutex pointer to mutex which is to be acquired */
OClearableGuard(IMutex & rMutex)
: m_pMutex( &rMutex )
{
m_pMutex->acquire();
}
/** Releases mutex. */
virtual ~OClearableGuard()
{
if( m_pMutex )
m_pMutex->release();
}
/** Releases mutex. */
void SAL_CALL clear()
{
if( m_pMutex )
{
m_pMutex->release();
m_pMutex = NULL;
}
}
protected:
IMutex* m_pMutex;
};
#ifdef _USE_NAMESPACE
}
#endif
#endif //_VOS_MUTEX_HXX_
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