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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 _NULLCANVAS_USAGECOUNTER_HXX
#define _NULLCANVAS_USAGECOUNTER_HXX
#include <osl/interlck.h>
#include <boost/current_function.hpp>
namespace nullcanvas
{
/** Little resource tracking counter.
When using this object, a global use counter, specific to the
given type is incremented on object construction, and
decremented on object destruction.
*/
template< class Type > class UsageCounter
{
public:
UsageCounter()
{
OSL_TRACE( "%s, %d objects currently in use.\n",
BOOST_CURRENT_FUNCTION,
osl_atomic_increment( &s_nCount ) );
}
~UsageCounter()
{
const sal_Int32 nCount( osl_atomic_decrement( &s_nCount ) );
if( !nCount )
{
OSL_TRACE( "%s, last instance deleted.\n",
BOOST_CURRENT_FUNCTION );
}
else
{
OSL_TRACE( "%s, %d instances left.\n",
BOOST_CURRENT_FUNCTION,
nCount );
}
}
private:
static oslInterlockedCount s_nCount;
};
template< class Type > oslInterlockedCount UsageCounter<Type>::s_nCount = 0;
}
#endif /* _NULLCANVAS_USAGECOUNTER_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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