00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org/ 00006 00007 Copyright (c) 2000-2006 Torus Knot Software Ltd 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU Lesser General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/lesser.txt. 00023 00024 You may alternatively use this source under the terms of a specific version of 00025 the OGRE Unrestricted License provided you have obtained such a license from 00026 Torus Knot Software Ltd. 00027 ----------------------------------------------------------------------------- 00028 */ 00029 /* Original version Copyright (C) Scott Bilas, 2000. 00030 * All rights reserved worldwide. 00031 * 00032 * This software is provided "as is" without express or implied 00033 * warranties. You may freely copy and compile this source into 00034 * applications you distribute provided that the copyright text 00035 * below is included in the resulting source code, for example: 00036 * "Portions Copyright (C) Scott Bilas, 2000" 00037 */ 00038 #ifndef _SINGLETON_H__ 00039 #define _SINGLETON_H__ 00040 00041 // Added by Steve Streeting for Ogre 00042 #include "OgrePrerequisites.h" 00043 00044 #if OGRE_COMPILER == OGRE_COMPILER_MSVC 00045 // Turn off warnings generated by this singleton implementation 00046 # pragma warning (disable : 4311) 00047 # pragma warning (disable : 4312) 00048 #endif 00049 00050 #if defined ( OGRE_GCC_VISIBILITY ) 00051 # pragma GCC visibility push(default) 00052 #endif 00053 namespace Ogre { 00054 // End SJS additions 00057 template <typename T> class Singleton 00058 { 00059 protected: 00060 00061 static T* ms_Singleton; 00062 00063 public: 00064 Singleton( void ) 00065 { 00066 assert( !ms_Singleton ); 00067 #if defined( _MSC_VER ) && _MSC_VER < 1200 00068 int offset = (int)(T*)1 - (int)(Singleton <T>*)(T*)1; 00069 ms_Singleton = (T*)((int)this + offset); 00070 #else 00071 ms_Singleton = static_cast< T* >( this ); 00072 #endif 00073 } 00074 ~Singleton( void ) 00075 { assert( ms_Singleton ); ms_Singleton = 0; } 00076 static T& getSingleton( void ) 00077 { assert( ms_Singleton ); return ( *ms_Singleton ); } 00078 static T* getSingletonPtr( void ) 00079 { return ms_Singleton; } 00080 }; 00081 } 00082 #if defined ( OGRE_GCC_VISIBILITY ) 00083 # pragma GCC visibility pop 00084 #endif 00085 #endif
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Last modified Sun Sep 27 22:02:26 2009