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/*
* The Mana Server
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server 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
* any later version.
*
* The Mana Server 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 The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SINGLETON_H
#define SINGLETON_H
namespace utils
{
/**
* An abstract Meyer's singleton class.
*/
template <typename T>
class Singleton
{
public:
/**
* Create an instance of Singleton.
*
* @return the unique instance of Singleton.
*/
static T &instance()
{
static T theInstance;
return theInstance;
}
protected:
/**
* Default constructor.
*/
Singleton()
throw()
{}
virtual ~Singleton()
throw()
{}
private:
/**
* Copy constructor.
*/
Singleton(const Singleton &);
/**
* Assignment operator.
*/
Singleton &operator=(const Singleton &);
};
} // namespace utils
#endif // SINGLETON_H
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