Commit 120a9af2 authored by Hugo Beauzee-Luyssen's avatar Hugo Beauzee-Luyssen Committed by Jean-Baptiste Kempf
Browse files

Adding a generic singleton pattern implementation


Signed-off-by: Jean-Baptiste Kempf's avatarJean-Baptiste Kempf <jb@videolan.org>
parent f54df293
......@@ -302,7 +302,9 @@ noinst_HEADERS = \
util/qvlcframe.hpp \
util/qvlcapp.hpp \
util/qt_dirs.hpp \
util/registry.hpp
util/registry.hpp \
util/singleton.hpp
EXTRA_DIST += \
vlc.qrc \
......
/*****************************************************************************
* singleton.hpp: Generic Singleton pattern implementation
****************************************************************************
* Copyright (C) 2009 VideoLAN
*
* Authors: Hugo Beauzee-Luyssen <beauze.h # gmail - com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef _SINGLETON_HPP_
#define _SINGLETON_HPP_
#include <stdlib.h>
#include "qt4.hpp"
template <typename T>
class Singleton
{
public:
static T* getInstance( intf_thread_t *p_intf = NULL )
{
if ( m_instance == NULL )
m_instance = new T( p_intf );
return m_instance;
}
static void killInstance()
{
if ( m_instance != NULL )
{
delete m_instance;
m_instance = NULL;
}
}
protected:
Singleton(){}
virtual ~Singleton(){}
/* Not implemented since these methods should *NEVER* been called.
If they do, it probably won't compile :) */
Singleton(const Singleton<T>&);
Singleton<T>& operator=(const Singleton<T>&);
private:
static T* m_instance;
};
template <typename T>
T* Singleton<T>::m_instance = NULL;
#endif // _SINGLETON_HPP_
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