ref: ec17d9295920ba33dee1fa5348bf35fca2b88665
parent: ba10ad8dba18db7dfcb934f67e23e405d7601ac5
author: Ori Bernstein <ori@eigenstate.org>
date: Mon Sep 25 08:10:33 EDT 2017
Add ncpu for openbsd.
--- a/lib/thread/bld.sub
+++ b/lib/thread/bld.sub
@@ -41,8 +41,9 @@
# openbsd impl of thread primitives
exit+openbsd-x64.s
- spawn+openbsd.myr
mutex+openbsd:6.2.myr
+ ncpu+openbsd.myr
+ spawn+openbsd.myr
atomic-impl+x64.s
atomic.myr
--- /dev/null
+++ b/lib/thread/ncpu+openbsd.myr
@@ -1,0 +1,23 @@
+use std
+use sys
+
+pkg thread =
+ const ncpu : (-> int)
+;;
+
+const ncpu = {+ var mib : int[2]
+ var ncpu : int
+ var ncpusz
+ var res
+
+ mib[0] = 6 /* CTL_HW */
+ mib[1] = 3 /* HW_NCPU */
+ ncpusz = sizeof(int)
+
+ res = sys.sysctl(mib[:], (&ncpu : void#), &ncpusz, (0 : void#), (0 : sys.size#))
+ if res < 0 || ncpu <= 0
+ -> 1
+ ;;
+ -> ncpu
+}