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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: SyncObjects.hxx,v $
* $Revision: 1.4 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _SYNCOBJECTS_HXX_
#define _SYNCOBJECTS_HXX_
//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------
#include <windows.h>
//------------------------------------------------------------------------
// a simple helper template for automatic locking/unlocking
//------------------------------------------------------------------------
template< class LOCK >
class CLockGuard
{
public:
CLockGuard( LOCK* aLock ) :
m_pLock( aLock )
{
m_pLock->Lock( );
}
~CLockGuard( )
{
m_pLock->Unlock( );
}
private:
LOCK* m_pLock;
};
//------------------------------------------------------------------------
// a interface base class for different locking sub classes
//------------------------------------------------------------------------
class CSyncObject
{
public:
virtual ~CSyncObject( ) = 0;
virtual int Lock( ) = 0;
virtual int Unlock( ) = 0;
};
//------------------------------------------------------------------------
// if no synchronization is necessary this class will be used
// declaring the functions as inline safes runtime overhead
//------------------------------------------------------------------------
class CNullLock
{
public:
inline virtual ~CNullLock ( ) {};
inline virtual int Lock( ) {};
inline virtual int Unlock() {};
};
//------------------------------------------------------------------------
// a minimal wrapper for a win32 critical section
//------------------------------------------------------------------------
class CCriticalSection : public CSyncObject
{
public:
CCriticalSection( );
virtual ~CCriticalSection( );
// both functions return always 0
// because the win32 critsec functions
// don't return any return code
virtual int Lock( );
virtual int Unlock( );
private:
CRITICAL_SECTION m_critSec;
};
typedef CLockGuard< CSyncObject > SyncObjLockGuard_t;
#endif
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