大话设计模式11-单例模式-2020-9-24

//11.单例模式
class Singleton
{
public:
	static Singleton *getInstance()
	{
		if (m_pSingleton==NULL)
		{
			m_pSingleton = new Singleton;
		}
		return m_pSingleton;
	}
	static void destory()
	{
		if (m_pSingleton)
		{
			delete m_pSingleton;
			m_pSingleton = NULL;
		}
	}
private:
	Singleton(){};
	~Singleton(){};
	static Singleton *m_pSingleton;
};