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Handle.cpp
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Handle.cpp
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/***************************************************************************
* (c) Jürgen Riegel (juergen.riegel@web.de) 2002 *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License (LGPL) *
* as published by the Free Software Foundation; either version 2 of *
* the License, or (at your option) any later version. *
* for detail see the LICENCE text file. *
* *
* FreeCAD 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with FreeCAD; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
* *
* Juergen Riegel 2002 *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <assert.h>
#endif
#include <QAtomicInt>
#include "Handle.h"
#include "Exception.h"
using namespace Base;
//**************************************************************************
// Construction/Destruction
Handled::Handled()
: _lRefCount(new QAtomicInt(0))
{
}
Handled::~Handled()
{
if ((int)(*_lRefCount) != 0)
throw Exception("Reference counter of deleted object is not zero!!!!!\n");
delete _lRefCount;
}
void Handled::ref() const
{
_lRefCount->ref();
}
void Handled::unref() const
{
assert(*_lRefCount > 0);
if (!_lRefCount->deref()) {
delete this;
}
}
int Handled::getRefCount(void) const
{
return (int)(*_lRefCount);
}
const Handled& Handled::operator = (const Handled&)
{
// we must not assign _lRefCount
return *this;
}