What does the ATEXIT_FIXED macro mean?

[rishitc]

Hi,
I was following the book by Andrei Alexandrescu. While reading about the Phoenix Singleton Pattern, I noticed the recommendation of the macro ATEXIT_FIXED, but I'm not able to find what this macro means, or where it is defined? Is it defined by the compiler?

Any inputs regarding this would be really helpful,

Thanks!

[feiyunw]

Define it yourself:
feiyunw/loki-lib@d467813