From bd84d01eeac47ef04237e8993ab6d653caa88493 Mon Sep 17 00:00:00 2001 From: phk Date: Sat, 25 Jan 2003 07:51:09 +0000 Subject: Add sysctl kern.timecounter.nsetclock which indicates the number of potential discontinuities in our UTC timescale. Applications can monitor this variable if they want to be informed about steps in the timescale. Slews (ntp and adjtime(2)) and frequency adjustments (ntp) will not increment this counter, only operations which set the clock. No attempt is made to classify size or direction of the step. --- sys/kern/kern_tc.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sys') diff --git a/sys/kern/kern_tc.c b/sys/kern/kern_tc.c index bb20a9e..93b50a0 100644 --- a/sys/kern/kern_tc.c +++ b/sys/kern/kern_tc.c @@ -96,6 +96,7 @@ TC_STATS(nbinuptime); TC_STATS(nnanouptime); TC_STATS(nmicrouptime); TC_STATS(nbintime); TC_STATS(nnanotime); TC_STATS(nmicrotime); TC_STATS(ngetbinuptime); TC_STATS(ngetnanouptime); TC_STATS(ngetmicrouptime); TC_STATS(ngetbintime); TC_STATS(ngetnanotime); TC_STATS(ngetmicrotime); +TC_STATS(nsetclock); #undef TC_STATS @@ -314,6 +315,7 @@ tc_setclock(struct timespec *ts) { struct timespec ts2; + nsetclock++; nanouptime(&ts2); boottime.tv_sec = ts->tv_sec - ts2.tv_sec; /* XXX boottime should probably be a timespec. */ -- cgit v1.1