New function num-processors

This addresses a FIXME comment in lisp/emacs-lisp/comp.el,
relating to the number of subsidiary processes used by
comp-run-async-workers in native compilation.
* admin/merge-gnulib (GNULIB_MODULES): Add nproc.
* doc/lispref/processes.texi (Process Information), etc/NEWS:
Document num-processors.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* lib/nproc.c, lib/nproc.h, m4/nproc.m4:
New files, copied from Gnulib by admin/merge-gnulib.
* lisp/emacs-lisp/comp.el (w32-get-nproc): Remove decl.
(comp-effective-async-max-jobs): Use num-processors.
* src/process.c: Include nproc.h.
(Fnum_processors): New function.
(syms_of_process): Define ‘all’, ‘current’, ‘num-processors’.
* src/w32proc.c (Fw32_get_nproc): Add FIXME comment.
* test/src/process-tests.el (process-num-processors): New test.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/w32proc.c b/src/w32proc.c
index 702ea122e65..3b7d92a2aa8 100644
--- a/src/w32proc.c
+++ b/src/w32proc.c
@@ -3878,6 +3878,7 @@ w32_compare_strings (const char *s1, const char *s2, char *locname,
   return val - 2;
 }
 
+/* FIXME: Remove, merging any of its special features into num-processors.  */
 DEFUN ("w32-get-nproc", Fw32_get_nproc,
        Sw32_get_nproc, 0, 0, 0,
        doc: /* Return the number of system's processor execution units.  */)