singleton.h

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00001 /***************************************************************************
00002  *   Copyright (C) 2008 by Kutumov Alexey                                  *
00003  *   ru.pixel@gmail.com                                                    *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU General Public License as published by  *
00007  *   the Free Software Foundation; either version 2 of the License, or     *
00008  *   (at your option) any later version.                                   *
00009  *                                                                         *
00010  *   This program is distributed in the hope that it will be useful,       *
00011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00013  *   GNU General Public License for more details.                          *
00014  *                                                                         *
00015  *   You should have received a copy of the GNU General Public License     *
00016  *   along with this program; if not, write to the                         *
00017  *   Free Software Foundation, Inc.,                                       *
00018  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
00019  ***************************************************************************/
00020 
00034 #ifndef __singleton__header__
00035 #define __singleton__header__
00036 
00037 #include "gpucalc/object.h"
00038 
00039 namespace gpucalc
00040 {
00041  const char _SingletonClassName [] = "Singleton";
00042 
00054  template <typename T> class Singleton: public Object
00055  {
00056 
00057   OBJ_DISABLE_COPY(Singleton)
00058   
00059   
00060   public:
00061    Singleton(const std::string & SingletonType): Object(_SingletonClassName, SingletonType)
00062    {
00063     assert(!mSingleton);
00064     mSingleton = static_cast< T * >(this);
00065    }
00066 
00067 
00068    ~Singleton()
00069    {
00070     assert(mSingleton);
00071     mSingleton = 0;
00072    }
00073 
00074 
00091    static T & getSingleton()
00092    {
00093     assert(mSingleton);
00094     return (* mSingleton);
00095    }
00096 
00097 
00101    static T * getSingletonPtr()
00102    {
00103     return mSingleton;
00104    }
00105 
00106 
00107   protected:
00108    static T * mSingleton;
00109  };
00110 }
00111 
00112 #endif

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