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56eead9a65
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@452 0778d3d1-df1d-0410-868b-ea421aaaa00d
84 lines
1.7 KiB
C++
84 lines
1.7 KiB
C++
/*
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* shared_object.h - class sharedObject for use among threads
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*
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* Copyright (c) 2006 Javier Serrano Polo <jasp00/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _SHARED_OBJECT_H
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#define _SHARED_OBJECT_H
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#ifdef QT4
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#include <QtCore/QMutex>
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#else
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#include <qmutex.h>
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#endif
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class sharedObject
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{
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public:
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sharedObject( void ) :
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m_reference_count( 1 )
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{
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}
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template<class T>
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static T * ref( T * _object )
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{
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// TODO: Use QShared
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_object->m_reference_mutex.lock();
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++_object->m_reference_count;
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_object->m_reference_mutex.unlock();
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return( _object );
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}
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template<class T>
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static void unref( T * _object )
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{
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_object->m_reference_mutex.lock();
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bool delete_object = --_object->m_reference_count == 0;
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_object->m_reference_mutex.unlock();
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if ( delete_object )
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{
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delete _object;
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}
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}
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private:
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unsigned m_reference_count;
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QMutex m_reference_mutex;
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} ;
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#endif
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