template <class Ty>
class DestroyableSingleton : public Ty
{
public:
	static Ty* Instance()
	{
		if (!single_instance_)
		{
			single_instance_ = (Ty*)malloc(sizeof(Ty));
			memset((void*)single_instance_, 0, sizeof(Ty));
			if (single_instance_)
				single_instance_ = new(single_instance_) Ty;
		}
		return single_instance_;
	}
	static void DestroyInstance()
	{
		single_instance_->~Ty();
		free(single_instance_);
		single_instance_ = 0;
	}

private:
	static Ty* single_instance_;

	DestroyableSingleton();

	DISALLOW_COPY_AND_ASSIGN(DestroyableSingleton);
};