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#ifndef __LIBJIN_SINGLETON_H
#define __LIBJIN_SINGLETON_H
namespace jin
{
template<class T>
class Singleton
{
public:
static T* get()
{
if (_instance == nullptr)
_instance = new T;
return _instance;
}
static void destroy()
{
delete _instance;
_instance = nullptr;
}
protected:
Singleton() {};
virtual ~Singleton() {};
static T* _instance;
private:
Singleton(const Singleton&);
Singleton& operator = (const Singleton&);
};
template<class T> T* Singleton<T>::_instance = nullptr;
#define singleton(T) friend Singleton<T>
} // namespace jin
#endif // __LIBJIN_SINGLETON_H
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