Properly deleting a singleton

Question

I have the following code:

MyClass.h:

static MyMutex instanceMutex;
static MyClass* getInstance();
static void deleteInstance();

MyClas

Answer 1

getInstance and delteInstance should be static, so they can only work with static members of the class. The static members don't get destroyed with the instance.

If your code is multithreaded, the code is not safe. There's no way to make sure there's no pointer to the instance held in some running context.