singleton.h

/**
 * OpenRaceLapTimer - Copyright 2015 by airbirds.de, a project of polyvision UG (haftungsbeschränkt)
 *
 * Author: Alexander B. Bierbrauer
 *
 * This file is part of OpenRaceLapTimer.
 *
 * OpenRaceLapTimer 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 3 of the License, or (at your option) any later version.
 * OpenRaceLapTimer 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 Foobar. If not, see http://www.gnu.org/licenses/.
 **/

#ifndef SINGLETON_H
#define SINGLETON_H

#include <stdlib.h>

template <typename T>
class Singleton
{
public:
	static T*	instance()
	{
		if(m_pInstance == NULL)
		{
			m_pInstance = new T;
		}

		return m_pInstance;
	};

	static void	delInstance()
	{
		if(m_pInstance)
		{
			delete m_pInstance;
			m_pInstance = NULL;
		}
	};

protected:
	Singleton(){};
	virtual ~Singleton(){};

private:
	static T	*m_pInstance;
};

template <typename T> T* Singleton<T>::m_pInstance = NULL;
#endif