C ++ Singleton设计模式

问题：

Recently I've bumped into a realization/implementation of the Singleton design pattern for C++. 最近，我碰到了C ++的Singleton设计模式的实现/实现。 It has looked like this (I have adopted it from the real life example): 它看起来像这样（我从现实生活的示例中采用了它）：

// a lot of methods are omitted here
class Singleton
{
   public:
       static Singleton* getInstance( );
       ~Singleton( );
   private:
       Singleton( );
       static Singleton* instance;
};

From this declaration I can deduce that the instance field is initiated on the heap. 从该声明中，我可以推断出实例字段是在堆上初始化的。 That means there is a memory allocation. 这意味着存在内存分配。 What is completely unclear for me is when exactly the memory is going to be deallocated? 对我来说，完全不清楚的是何时确切地将要释放内存？ Or is there a bug and memory leak? 还是有错误和内存泄漏？ It seems like there is a problem in the implementation. 似乎实现中存在问题。

My main question is, how do I implement it in the right way? 我的主要问题是，如何以正确的方式实施它？

解决方案：

参考一： https://stackoom.com/question/4EEN/C-Singleton设计模式
参考二： https://oldbug.net/q/4EEN/C-Singleton-design-pattern

来源：oschina

链接：https://my.oschina.net/u/4428122/blog/4337533

标签

c++

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