[src/trunk]: src/sys/kern switch to nanotime() for 100ns resolution

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

details:   https://anonhg.NetBSD.org/src/rev/a10a8b72620d
branches:  trunk
changeset: 754581:a10a8b72620d
user:      kardel <kardel%NetBSD.org@localhost>
date:      Tue May 04 19:23:56 2010 +0000

description:
switch to nanotime() for 100ns resolution

diffstat:

 sys/kern/kern_uuid.c |  16 ++++++----------
 1 files changed, 6 insertions(+), 10 deletions(-)

diffs (42 lines):

diff -r 82afecd919fc -r a10a8b72620d sys/kern/kern_uuid.c
--- a/sys/kern/kern_uuid.c      Tue May 04 19:16:22 2010 +0000
+++ b/sys/kern/kern_uuid.c      Tue May 04 19:23:56 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_uuid.c,v 1.16 2008/11/18 14:01:03 joerg Exp $     */
+/*     $NetBSD: kern_uuid.c,v 1.17 2010/05/04 19:23:56 kardel Exp $    */
 
 /*
  * Copyright (c) 2002 Marcel Moolenaar
@@ -29,7 +29,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_uuid.c,v 1.16 2008/11/18 14:01:03 joerg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_uuid.c,v 1.17 2010/05/04 19:23:56 kardel Exp $");
 
 #include <sys/param.h>
 #include <sys/endian.h>
@@ -136,19 +136,15 @@
  * the Unix time since 00:00:00.00, January 1, 1970 to the date of the
  * Gregorian reform to the Christian calendar.
  */
-/*
- * At present, NetBSD has no timespec source, only timeval sources.  So,
- * we use timeval.
- */
 static uint64_t
 uuid_time(void)
 {
-       struct timeval tv;
+       struct timespec tsp;
        uint64_t xtime = 0x01B21DD213814000LL;
 
-       microtime(&tv);
-       xtime += (uint64_t)tv.tv_sec * 10000000LL;
-       xtime += (uint64_t)(10 * tv.tv_usec);
+       nanotime(&tsp);
+       xtime += (uint64_t)tsp.tv_sec * 10000000LL;
+       xtime += (uint64_t)(tsp.tv_nsec / 100);
        return (xtime & ((1LL << 60) - 1LL));
 }