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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/.
*/
#ifndef INCLUDED_SHELL_INC_SPSUPP_COMREFCOUNTED_HPP
#define INCLUDED_SHELL_INC_SPSUPP_COMREFCOUNTED_HPP
#include <objbase.h>
#include <assert.h>
template <class... Interfaces>
class COMRefCounted : public Interfaces...
{
public:
virtual ~COMRefCounted() {}
// IUnknown methods
ULONG STDMETHODCALLTYPE AddRef() override
{
return static_cast<ULONG>(::InterlockedIncrement(&m_nRef));
}
ULONG STDMETHODCALLTYPE Release() override
{
assert(m_nRef > 0);
if (::InterlockedDecrement(&m_nRef) == 0)
{
delete this;
return 0;
}
return static_cast<ULONG>(m_nRef);
}
private:
LONG m_nRef = 1; // Created referenced
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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