weak.hxx

Go to the documentation of this file.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
 */

/*
 * This file is part of LibreOffice published API.
 */
#ifndef INCLUDED_CPPUHELPER_WEAK_HXX
#define INCLUDED_CPPUHELPER_WEAK_HXX

#include <cassert>
#include <cstddef>
#include "osl/interlck.h"
#include "rtl/alloc.h"
#include "com/sun/star/uno/XWeak.hpp"
#include "cppuhelper/cppuhelperdllapi.h"


namespace cppu
{

class OWeakConnectionPoint;

class CPPUHELPER_DLLPUBLIC OWeakObject : public css::uno::XWeak
{
    friend class OWeakConnectionPoint;

protected:
    virtual ~OWeakObject() COVERITY_NOEXCEPT_FALSE;

    void    disposeWeakConnectionPoint();

    oslInterlockedCount m_refCount;


    OWeakConnectionPoint * m_pWeakConnectionPoint;

    void * m_pReserved;


public:
    // these are here to force memory de/allocation to sal lib.
    static void * SAL_CALL operator new( size_t nSize )
        { return ::rtl_allocateMemory( nSize ); }
    static void SAL_CALL operator delete( void * pMem )
        { ::rtl_freeMemory( pMem ); }
    static void * SAL_CALL operator new( size_t, void * pMem )
        { return pMem; }
    static void SAL_CALL operator delete( void *, void * )
        {}

    OWeakObject()
        : m_refCount( 0 )
        , m_pWeakConnectionPoint( NULL )
        , m_pReserved(NULL)
        {}

    OWeakObject( const OWeakObject & )
        : css::uno::XWeak()
        , m_refCount( 0 )
        , m_pWeakConnectionPoint( NULL )
        , m_pReserved(NULL)
        {}
    OWeakObject & SAL_CALL operator = ( const OWeakObject &)
        { return *this; }

    virtual css::uno::Any SAL_CALL queryInterface(
        const css::uno::Type & rType ) SAL_OVERRIDE;
    virtual void SAL_CALL acquire()
        SAL_NOEXCEPT SAL_OVERRIDE;
    virtual void SAL_CALL release()
        SAL_NOEXCEPT SAL_OVERRIDE;

    virtual css::uno::Reference< css::uno::XAdapter > SAL_CALL queryAdapter() SAL_OVERRIDE;

    SAL_CALL operator css::uno::Reference< css::uno::XInterface > ()
        { return this; }

#if defined LIBO_INTERNAL_ONLY
    css::uno::XWeak* getXWeak() { return this; }
#endif
};


static inline css::uno::XInterface * acquire(OWeakObject * instance)
{
    assert(instance != NULL);
    instance->acquire();
    return instance;
}

#if defined LIBO_INTERNAL_ONLY
static inline css::uno::XWeak* getXWeak(OWeakObject* instance) { return instance; }
#endif

}

#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */