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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* 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 _CPPUHELPER_WEAK_HXX_
#define _CPPUHELPER_WEAK_HXX_
#include <osl/interlck.h>
#include <rtl/alloc.h>
#include <cppuhelper/weakref.hxx>
#include <cppuhelper/queryinterface.hxx>
#include <com/sun/star/uno/XWeak.hpp>
#include "cppuhelperdllapi.h"
namespace cppu
{
class OWeakConnectionPoint;
/** Base class to implement an UNO object supporting weak references, i.e. the object can be held
weakly (by a ::com::sun::star::uno::WeakReference).
This implementation copes with reference counting. Upon last release(), the virtual dtor
is called.
@derive
Inherit from this class and delegate acquire()/ release() calls.
*/
class CPPUHELPER_DLLPUBLIC OWeakObject : public ::com::sun::star::uno::XWeak
{
friend class OWeakConnectionPoint;
protected:
/** Virtual dtor.
@attention
Despite the fact that a RuntimeException is allowed to be thrown, you must not throw any
exception upon destruction!
*/
virtual ~OWeakObject() SAL_THROW( (::com::sun::star::uno::RuntimeException) );
/** disposes and resets m_pWeakConnectionPoint
@precond
m_refCount equals 0
*/
void disposeWeakConnectionPoint();
/** reference count.
@attention
Don't modify manually! Use acquire() and release().
*/
oslInterlockedCount m_refCount;
/// @cond INTERNAL
/** Container of all weak reference listeners and the connection point from the weak reference.
*/
OWeakConnectionPoint * m_pWeakConnectionPoint;
/** reserved for future use. do not use.
*/
void * m_pReserved;
/// @endcond
public:
/// @cond INTERNAL
// these are here to force memory de/allocation to sal lib.
inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW(())
{ return ::rtl_allocateMemory( nSize ); }
inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW(())
{ ::rtl_freeMemory( pMem ); }
inline static void * SAL_CALL operator new( size_t, void * pMem ) SAL_THROW(())
{ return pMem; }
inline static void SAL_CALL operator delete( void *, void * ) SAL_THROW(())
{}
/// @endcond
#ifdef _MSC_VER
/** Default Constructor. Sets the reference count to zero.
Accidentally occurs in msvc mapfile = > had to be outlined.
*/
OWeakObject() SAL_THROW(());
#else
/** Default Constructor. Sets the reference count to zero.
*/
inline OWeakObject() SAL_THROW(())
: m_refCount( 0 )
, m_pWeakConnectionPoint( 0 )
{}
#endif
/** Dummy copy constructor. Set the reference count to zero.
@param rObj dummy param
*/
inline OWeakObject( const OWeakObject & ) SAL_THROW(())
: com::sun::star::uno::XWeak()
, m_refCount( 0 )
, m_pWeakConnectionPoint( 0 )
{}
/** Dummy assignment operator. Does not affect reference count.
@return this OWeakObject
*/
inline OWeakObject & SAL_CALL operator = ( const OWeakObject &)
SAL_THROW(())
{ return *this; }
/** Basic queryInterface() implementation supporting \::com::sun::star::uno::XWeak and
\::com::sun::star::uno::XInterface.
@param rType demanded type
@return demanded type or empty any
*/
virtual ::com::sun::star::uno::Any SAL_CALL queryInterface(
const ::com::sun::star::uno::Type & rType )
throw (::com::sun::star::uno::RuntimeException);
/** increasing m_refCount
*/
virtual void SAL_CALL acquire()
throw ();
/** decreasing m_refCount
*/
virtual void SAL_CALL release()
throw ();
/** XWeak::queryAdapter() implementation
@return a \::com::sun::star::uno::XAdapter reference
*/
virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XAdapter > SAL_CALL queryAdapter()
throw (::com::sun::star::uno::RuntimeException);
/** Cast operator to XInterface reference.
@return XInterface reference
*/
inline SAL_CALL operator ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > () SAL_THROW(())
{ return this; }
};
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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