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/* -*- 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 .
*/
#ifndef INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX
#define INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX
#include <memory>
namespace comphelper {
/// @internal
namespace detail {
/// @internal
template <typename T> struct ReleaseFunc {
void operator()( T * p ) const { p->release(); }
};
} // namespace detail
/** Makes a std::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>
std::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 (std::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 std::shared_ptr<T> make_shared_from_UNO( T * p )
{
p->acquire();
return std::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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