On 24/10/2013 22:32, Quoth gast128:

we use these macro's to be more portable, but are these 'official' Boost functionality? they are defined in which made me doubt. Ofc better to use atomics in future, bit no time for that right now.

It's probably safe to assume that anything in "detail" (either by path or by namespace) is purely implementation and subject to arbitrary change without notice, so you're pushing your luck if you try to use them. It's all just code though, so there's no particular reason why you can't use it -- just be aware that your code might break when you update to a different version of Boost.