[src/trunk]: src Add rumpuser interface to fetch number of host cpus.

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/37dbc35fc6a1
branches:  trunk
changeset: 754327:37dbc35fc6a1
user:      pooka <pooka%NetBSD.org@localhost>
date:      Wed Apr 28 00:33:45 2010 +0000

description:
Add rumpuser interface to fetch number of host cpus.

diffstat:

 lib/librumpuser/rumpuser.c       |  20 ++++++++++++++++++--
 sys/rump/include/rump/rumpuser.h |   4 +++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diffs (63 lines):

diff -r 01061fcbf6df -r 37dbc35fc6a1 lib/librumpuser/rumpuser.c
--- a/lib/librumpuser/rumpuser.c        Wed Apr 28 00:32:30 2010 +0000
+++ b/lib/librumpuser/rumpuser.c        Wed Apr 28 00:33:45 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rumpuser.c,v 1.3 2010/04/21 11:16:41 pooka Exp $       */
+/*     $NetBSD: rumpuser.c,v 1.4 2010/04/28 00:33:45 pooka Exp $       */
 
 /*
  * Copyright (c) 2007-2010 Antti Kantee.  All Rights Reserved.
@@ -27,7 +27,7 @@
 
 #include <sys/cdefs.h>
 #if !defined(lint)
-__RCSID("$NetBSD: rumpuser.c,v 1.3 2010/04/21 11:16:41 pooka Exp $");
+__RCSID("$NetBSD: rumpuser.c,v 1.4 2010/04/28 00:33:45 pooka Exp $");
 #endif /* !lint */
 
 /* thank the maker for this */
@@ -46,6 +46,7 @@
 
 #ifdef __NetBSD__
 #include <sys/disklabel.h>
+#include <sys/sysctl.h>
 #endif
 
 #include <assert.h>
@@ -589,3 +590,18 @@
        return -1;
 #endif
 }
+
+int
+rumpuser_getnhostcpu(void)
+{
+       int ncpu;
+       size_t sz = sizeof(ncpu);
+
+#ifdef __NetBSD__
+       if (sysctlbyname("hw.ncpu", &ncpu, &sz, NULL, 0) == -1)
+               return 1;
+       return ncpu;
+#else
+       return 1;
+#endif
+}
diff -r 01061fcbf6df -r 37dbc35fc6a1 sys/rump/include/rump/rumpuser.h
--- a/sys/rump/include/rump/rumpuser.h  Wed Apr 28 00:32:30 2010 +0000
+++ b/sys/rump/include/rump/rumpuser.h  Wed Apr 28 00:33:45 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rumpuser.h,v 1.39 2010/04/21 11:13:29 pooka Exp $      */
+/*     $NetBSD: rumpuser.h,v 1.40 2010/04/28 00:33:45 pooka Exp $      */
 
 /*
  * Copyright (c) 2007 Antti Kantee.  All Rights Reserved.
@@ -109,6 +109,8 @@
 
 int rumpuser_dprintf(const char *, ...);
 
+int rumpuser_getnhostcpu(void);
+
 /* rumpuser_pth */
 void rumpuser_thrinit(kernel_lockfn, kernel_unlockfn, int);
 void rumpuser_biothread(void *);