* lib/nproc.c (parse_omp_threads): A new function refactored
from num_processors() to support parsing both of the
above environment variables.
(num_processors): Prefer using omp_get_num_threads() with [_OPENMP]
to accurately reflect the current OpenMP nesting level.
Also support the OMP_THREAD_LIMIT environment variable
to limit the max value determined from OMP_NUM_THREADS.
* modules/nproc: Depend on minmax header.
Suggested by Oliver Heimlich.
nproc merely exposes alternatives to sysconf(_SC_NPROCESSORS_CONF),
which is part of glibc and thus LGPLv2+; it is not adding any value
that strategically requires LGPLv3+. See also this thread.
https://lists.gnu.org/archive/html/bug-gnulib/2013-05/msg00105.html
* modules/nproc (License): Change from LGPLv3+.
Signed-off-by: Eric Blake <eblake@redhat.com>
* MODULES.html.sh: Add pthread, nproc.
* lib/nproc.c: New file.
* lib/nproc.h: New file.
* lib/pthread.in.h: New file.
* m4/pthread.m4: New file.
* modules/nproc: New file.
* modules/pthread: New file.
