Singleton.h

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/* 
 * Copyright (C) 2006-2010 Jacek Sieka, arnetheduck on gmail point 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef ADCHPP_SINGLETON_H
#define ADCHPP_SINGLETON_H

#include "common.h"

namespace adchpp {
    
template<typename T>
class Singleton {
public:
    Singleton() { }
    virtual ~Singleton() { }

    static T* getInstance() {
        dcassert(T::instance);
        return T::instance;
    }
    
    static void newInstance() {
        if(T::instance)
            delete T::instance;
        
        T::instance = new T();
    }
    
    static void deleteInstance() {
        delete T::instance;
        T::instance = NULL;
    }
private:
    Singleton(const Singleton&);
    Singleton& operator=(const Singleton&);

};

}

#endif // SINGLETON_H