Singleton.h

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#ifndef __SINGLETON_H
#define __SINGLETON_H

template<class T>
class Singleton
{
protected:
    static T* _Singleton;

    static void SetSingleton(T* value)
    {
        _Singleton = value;
    }

public:
    static T& GetSingleton()
    {
        return *_Singleton;
    }

    Singleton() { }

    static void CreateSingletonInstance()
    {
        _Singleton = new T();
    }

    static void DeleteSingletonInstance()
    {
        delete _Singleton;
        _Singleton = NULL;
    }

    Singleton(T* value)
    {
        SetSingleton(value);
    }
};

template <class T> T* Singleton<T>::_Singleton;

#endif