diff options
| -rw-r--r-- | README.md | 1 | ||||
| -rw-r--r-- | snooze.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/README.md b/README.md index 4b6832c..29e0ca9 100644 --- a/README.md +++ b/README.md @@ -127,6 +127,7 @@ Only mtime is looked at, so touch(1) is good. execs the command. You need to ensure (by setting up supervision) snooze runs again after that! * if we woke due to a SIGALRM, the command is executed immediately as well +* if we notice time moved backwards, recompute the time until the event * if the event is in the future, recompute the time it takes, possibly considering shifting of the system time or timezone changes (timezone reload only tested on glibc) diff --git a/snooze.c b/snooze.c index 60f7bff..3a5185d 100644 --- a/snooze.c +++ b/snooze.c @@ -230,6 +230,7 @@ int main(int argc, char *argv[]) int c; time_t t; time_t now = time(0); + time_t last = 0; /* default: every day at 00:00:00 */ memset(weekday, '*', sizeof weekday); @@ -348,6 +349,11 @@ int main(int argc, char *argv[]) while (!alarm_rang) { now = time(0); + if (now < last) { + t = find_next(now); + if (vflag) + printf("Time moved backwards, rescheduled for %s\n", isotime(tm)); + } t = mktime(tm); if (t <= now) { if (now - t <= slack) // still about time @@ -365,6 +371,7 @@ int main(int argc, char *argv[]) struct timespec ts; ts.tv_nsec = 0; ts.tv_sec = t - now > SLEEP_PHASE ? SLEEP_PHASE : t - now; + last = now; nanosleep(&ts, 0); // we just iterate again when this exits early } |