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/*
* Copyright (C) 2001-2012 Jacek Sieka, arnetheduck on gmail point com
* Copyright (C) 2009-2019 EiskaltDC++ developers
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include "NonCopyable.h"
#include "debug.h"
namespace dcpp {
class ISingleton {
public:
ISingleton() {}
virtual void release() = 0;
};
template<typename T>
class Singleton : private NonCopyable {
public:
Singleton() { }
virtual ~Singleton() { }
static T* getInstance() {
dcassert(instance);
return instance;
}
static void newInstance() {
if(instance)
delete instance;
instance = new T();
}
static void deleteInstance() {
if(instance)
delete instance;
instance = NULL;
}
virtual void release() {
deleteInstance();
}
protected:
static T* instance;
};
template<class T> T* Singleton<T>::instance = NULL;
} // namespace dcpp
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