[issue12655] Expose sched.h functions

[Antoine Pitrou]

Antoine Pitrou added the comment:

> Is it possible to get the number of CPU to be able to convert a Python 
> set to a cpu_set?

sched_getaffinity returns EINVAL if the cpu_set is too small, so it should be easy enough to iterate.
I agree the API should be changed for something saner, and before 3.3. Sorry for not looking at the patch in more detail when it was first submitted. I will try to cook up a new patch this week-end.

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nosy: +georg.brandl
priority: normal -> release blocker

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