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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.
*
************************************************************************/
#if ! defined(INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX)
#define INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX
#include "boost/shared_ptr.hpp"
#include <functional>
namespace comphelper {
/// @internal
namespace detail {
/// @internal
template <typename T> struct ReleaseFunc : ::std::unary_function<T *, void> {
void operator()( T * p ) const { p->release(); }
};
} // namespace detail
/** Makes a boost::shared_ptr from a ref-counted UNO object pointer.
This makes sense if the object is used via UNO (implementing some X
interface) and also internally using its implementation class, e.g.
<pre>
boost::shared_ptr<MyUnoImpl> const ptr(
comphelper::make_shared_from_UNO( new MyUnoImpl ) );
...
xUno->callingUno( uno::Reference<XSomeInterface>( ptr.get() ) );
...
takeSharedPtr( ptr );
...
</pre>
@attention The shared_ptr operates on a separate reference counter, so
weak pointers (boost::weak_ptr) are invalidated when the last
shared_ptr is destroyed, although the UNO object may still be
alive.
@param p object pointer
@return shared_ptr to object
*/
template <typename T>
inline ::boost::shared_ptr<T> make_shared_from_UNO( T * p )
{
p->acquire();
return ::boost::shared_ptr<T>( p, detail::ReleaseFunc<T>() );
}
} // namespace comphelper
#endif // ! defined(INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX)
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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