diff options
Diffstat (limited to 'Src/utils.c')
| -rw-r--r-- | Src/utils.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/Src/utils.c b/Src/utils.c index ce4e875fd..5c91dfcda 100644 --- a/Src/utils.c +++ b/Src/utils.c @@ -1570,14 +1570,14 @@ preprompt(void) /* If 1) the parameter PERIOD exists, 2) a hook function for * * "periodic" exists, 3) it's been greater than PERIOD since we * * executed any such hook, then execute it now. */ - if (period && ((zlong)time(NULL) > (zlong)lastperiodic + period) && + if (period && ((zlong)zmonotime(NULL) > (zlong)lastperiodic + period) && !callhookfunc("periodic", NULL, 1, NULL)) - lastperiodic = time(NULL); + lastperiodic = zmonotime(NULL); if (errflag) return; /* Check mail */ - currentmailcheck = time(NULL); + currentmailcheck = zmonotime(NULL); if (mailcheck && (zlong) difftime(currentmailcheck, lastmailcheck) > mailcheck) { char *mailfile; @@ -2761,6 +2761,19 @@ timespec_diff_us(const struct timespec *t1, const struct timespec *t2) return (reverse ? LONG_MIN : LONG_MAX); } +/* Like time(), but uses the monotonic clock */ + +/**/ +mod_export int +zmonotime(time_t *tloc) +{ + struct timespec ts; + zgettime_monotonic_if_available(&ts); + if (tloc) + *tloc = ts.tv_sec; + return ts.tv_sec; +} + /* * Sleep for the given number of microseconds --- must be within * range of a long at the moment, but this is only used for @@ -2794,7 +2807,9 @@ zsleep(long us) /** * Sleep for time (fairly) randomly up to max_us microseconds. - * Don't let the wallclock time extend beyond end_time. + * Don't let the time extend beyond end_time. end_time is compared to + * the current *monotonic* clock time, so do NOT base it on e.g. time(2); + * use zmonotime() or zgettime_monotonic_if_available(). * Return 1 if that seemed to work, else 0. * * For best results max_us should be a multiple of 2**16 or large @@ -2806,7 +2821,7 @@ int zsleep_random(long max_us, time_t end_time) { long r; - time_t now = time(NULL); + time_t now = zmonotime(NULL); /* * Randomish backoff. Doesn't need to be fundamentally |