This file is part of systemd.
Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
bool found_monotonic = false, found_realtime = false;
bool leave_around = false;
triple_timestamp ts;
- usec_t base = 0;
TimerValue *v;
Unit *trigger;
int r;
t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0;
LIST_FOREACH(value, v, t->values) {
-
if (v->disabled)
continue;
/* If we know the last time this was
* triggered, schedule the job based relative
- * to that. If we don't just start from
- * now. */
+ * to that. If we don't, just start from
+ * the activation time. */
- b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts.realtime;
+ if (t->last_trigger.realtime > 0)
+ b = t->last_trigger.realtime;
+ else {
+ if (state_translation_table[t->state] == UNIT_ACTIVE)
+ b = UNIT(t)->inactive_exit_timestamp.realtime;
+ else
+ b = ts.realtime;
+ }
r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse);
if (r < 0)
found_realtime = true;
- } else {
+ } else {
+ usec_t base;
switch (v->base) {
static void timer_time_change(Unit *u) {
Timer *t = TIMER(u);
+ usec_t ts;
assert(u);
if (t->state != TIMER_WAITING)
return;
+ /* If we appear to have triggered in the future, the system clock must
+ * have been set backwards. So let's rewind our own clock and allow
+ * the future trigger(s) to happen again :). Exactly the same as when
+ * you start a timer unit with Persistent=yes. */
+ ts = now(CLOCK_REALTIME);
+ if (t->last_trigger.realtime > ts)
+ t->last_trigger.realtime = ts;
+
log_unit_debug(u, "Time change, recalculating next elapse.");
timer_enter_waiting(t, false);
}