/***************************************************************************************** *                                      SEU-3D *                     ------------------------------------------------- * Copyright (c) 2005, Yuan XU<xychn15@yahoo.com.cn>,Chang'e SHI<evelinesce@yahoo.com.cn> * Copyright (c) 2006, Yuan XU<xuyuan.cn@gmail.com>,Chunlu JIANG<JamAceWatermelon@gmail.com> * Southeast University ,China * All rights reserved. * * Additionally,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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ****************************************************************************************/ #ifndef _SINGLETON_H#define _SINGLETON_H#ifdef __cplusplusextern "C"{#endif#ifdef __cplusplus}#endif#include <cassert>#define NO_ASSERT#ifndef NO_ASSERT#define ASSERT assert#else#define ASSERT(x);#endiftemplate <typename T> class Singleton{	static T* ms_Singleton;public:	Singleton( void )	{		assert( !ms_Singleton );		int offset = (int)(T*)1 - (int)(Singleton <T>*)(T*)1;		ms_Singleton = (T*)((int)this + offset );	}	~Singleton( void )	{		ASSERT( ms_Singleton );		ms_Singleton = 0;	}	static T& GetSingleton( void )	{		ASSERT( ms_Singleton );		return ( *ms_Singleton );	}	static T* GetSingletonPtr( void )	{		ASSERT( ms_Singleton );		return ( ms_Singleton );	}};template <typename T> T* Singleton <T>::ms_Singleton = 0;#ifdef NO_ASSERT#undef NO_ASSERT#undef ASSERT#endif#endif /* _SINGLETON_H */