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sd-event: when determining the last allowed time a time event may elapse, deal with overflows

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This commit is contained in:
Lennart Poettering 2016-02-01 00:19:14 +01:00
parent 53f555b6f6
commit 1bce0ffa66
1 changed files with 7 additions and 3 deletions
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10
src/libsystemd/sd-event/sd-event.c
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@ -327,6 +327,10 @@ static int earliest_time_prioq_compare(const void *a, const void *b) {
return 0;
}
static usec_t time_event_source_latest(const sd_event_source *s) {
return usec_add(s->time.next, s->time.accuracy);
}
static int latest_time_prioq_compare(const void *a, const void *b) {
const sd_event_source *x = a, *y = b;
@ -346,9 +350,9 @@ static int latest_time_prioq_compare(const void *a, const void *b) {
return 1;
/* Order by time */
if (x->time.next + x->time.accuracy < y->time.next + y->time.accuracy)
if (time_event_source_latest(x) < time_event_source_latest(y))
return -1;
if (x->time.next + x->time.accuracy > y->time.next + y->time.accuracy)
if (time_event_source_latest(x) > time_event_source_latest(y))
return 1;
return 0;
@ -1995,7 +1999,7 @@ static int event_arm_timer(
b = prioq_peek(d->latest);
assert_se(b && b->enabled != SD_EVENT_OFF);
t = sleep_between(e, a->time.next, b->time.next + b->time.accuracy);
t = sleep_between(e, a->time.next, time_event_source_latest(b));
if (d->next == t)
return 0;