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top: avoid a 'nan' when the delay interval is very low

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The granularity of /proc/uptime is fixed at hundredths
of a second. And, since we can cycle faster than that,
we are exposed to 'nan' when calculating elapsed time.

This commit will protect us from that outcome when the
delay interval has been set to an extremely low value.

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2014-04-27 00:00:00 -05:00 committed by Jaromir Capik
parent ada443268e
commit fe37ad15cd
1 changed files with 1 additions and 0 deletions
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top/top.c
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@ -2525,6 +2525,7 @@ static void procs_hlp (proc_t *this) {
uptime(&uptime_cur, NULL);
et = uptime_cur - uptime_sav;
if (et < 0.01) et = 0.005;
uptime_sav = uptime_cur;
// if in Solaris mode, adjust our scaling for all cpus