Difference atexit() and at_quick_exit()

Question

atexit()和at_quick_exit()有什么区别？
我们在 atexit(( 注册的每个函数也必须在 at_quick_exit(( 注册吗？
例如，凤凰-辛格尔顿自定义函数或其他函数。

Answer 1

好吧，从at_quick_exit：

Registers the function pointed to by func to be called on quick program termination (via std::quick_exit). ... The registered functions will not be called on normal program termination. If a function need to be called in that case, std::atexit must be used.

在atexit()上注册的函数在exit()调用。向at_quick_exit()注册的函数在quick_exit()上调用。
另一个区别是at_quick_exit()从 C++11 开始可用，而在 C 中不可用。