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| author | Alan Somers <asomers@FreeBSD.org> | 2018-05-04 14:39:32 +0000 |
|---|---|---|
| committer | Alan Somers <asomers@FreeBSD.org> | 2018-05-04 14:39:32 +0000 |
| commit | 8a9ab04279e6d01527cf90aae92835d56603ce52 (patch) | |
| tree | 493acc68de34a63046ae2690facb71d9eb1a2f80 | |
| parent | 6d5127daf437765aed9e9efcc85625d62fdf7b5b (diff) | |
| download | src-8a9ab04279e6d01527cf90aae92835d56603ce52.tar.gz src-8a9ab04279e6d01527cf90aae92835d56603ce52.zip | |
time(1): use the monotonic clock
The monotonic clock is more appropriate than the realtime clock for
measuring durations.
Reviewed by: ken, jilles
Differential Revision: https://reviews.freebsd.org/D14032
Notes
Notes:
svn path=/head/; revision=333251
| -rw-r--r-- | usr.bin/time/time.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/usr.bin/time/time.c b/usr.bin/time/time.c index 02c67ad19914..9121b1f14408 100644 --- a/usr.bin/time/time.c +++ b/usr.bin/time/time.c @@ -121,7 +121,7 @@ main(int argc, char **argv) setvbuf(out, (char *)NULL, _IONBF, (size_t)0); } - if (clock_gettime(CLOCK_REALTIME, &before_ts)) + if (clock_gettime(CLOCK_MONOTONIC, &before_ts)) err(1, "clock_gettime"); switch(pid = fork()) { case -1: /* error */ @@ -141,13 +141,13 @@ main(int argc, char **argv) while (wait4(pid, &status, 0, &ru) != pid) { if (siginfo_recvd) { siginfo_recvd = 0; - if (clock_gettime(CLOCK_REALTIME, &after)) + if (clock_gettime(CLOCK_MONOTONIC, &after)) err(1, "clock_gettime"); getrusage(RUSAGE_CHILDREN, &ru); showtime(stdout, &before_ts, &after, &ru); } } - if (clock_gettime(CLOCK_REALTIME, &after)) + if (clock_gettime(CLOCK_MONOTONIC, &after)) err(1, "clock_gettime"); if ( ! WIFEXITED(status)) warnx("command terminated abnormally"); |