tree af7d6b7d6aa3f05f83375de0ca79142ce8a50b99
parent 446e4318fa79788e09299d5953b5dd428953d14b
author Lasse Collin <lasse.collin@tukaani.org> 1477324296 +0300
committer Lasse Collin <lasse.collin@tukaani.org> 1477324296 +0300

tuklib_cpucores: Add support for sched_getaffinity().

It's available in glibc (GNU/Linux, GNU/kFreeBSD). It's better
than sysconf(_SC_NPROCESSORS_ONLN) because sched_getaffinity()
gives the number of cores available to the process instead of
the total number of cores online.

As a side effect, this commit fixes a bug on GNU/kFreeBSD where
configure would detect the FreeBSD-specific cpuset_getaffinity()
but it wouldn't actually work because on GNU/kFreeBSD it requires
using -lfreebsd-glue when linking. Now the glibc-specific function
will be used instead.

Thanks to Sebastian Andrzej Siewior for the original patch
and testing.