79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
/*!
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@file
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@author George Evmenov
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@date 02/2010
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*/
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/*
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This file is part of MyGUI.
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MyGUI is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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MyGUI is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with MyGUI. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __MYGUI_SINGLETON_H__
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#define __MYGUI_SINGLETON_H__
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#include "MyGUI_Diagnostic.h"
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namespace MyGUI
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{
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#if MYGUI_COMPILER == MYGUI_COMPILER_MSVC || MYGUI_PLATFORM == MYGUI_PLATFORM_APPLE
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template <class T>
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class Singleton
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#else
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template <class T>
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class MYGUI_EXPORT Singleton
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#endif
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{
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public:
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typedef Singleton<T> Base;
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Singleton()
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{
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MYGUI_ASSERT(nullptr == msInstance, "Singleton instance " << getClassTypeName() << " already exsist");
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msInstance = static_cast<T*>(this);
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}
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virtual ~Singleton()
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{
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MYGUI_ASSERT(nullptr != msInstance, "Destroying Singleton instance " << getClassTypeName() << " before constructing it.");
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msInstance = nullptr;
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}
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static T& getInstance()
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{
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MYGUI_ASSERT(nullptr != getInstancePtr(), "Singleton instance " << getClassTypeName() << " was not created");
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return (*getInstancePtr());
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}
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static T* getInstancePtr()
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{
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return msInstance;
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}
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static const char* getClassTypeName()
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{
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return mClassTypeName;
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}
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private:
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static T* msInstance;
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protected:
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static const char* mClassTypeName;
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};
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} // namespace MyGUI
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#endif // __MYGUI_SINGLETON_H__
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