#include "timer.h"
#include "dbus-timer.h"
#include "special.h"
-#include "bus-errors.h"
+#include "bus-util.h"
+#include "bus-error.h"
+#include "mkdir.h"
static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = {
[TIMER_DEAD] = UNIT_INACTIVE,
[TIMER_FAILED] = UNIT_FAILED
};
+static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata);
+
static void timer_init(Unit *u) {
Timer *t = TIMER(u);
assert(u);
assert(u->load_state == UNIT_STUB);
- t->next_elapse_monotonic = (usec_t) -1;
- t->next_elapse_realtime = (usec_t) -1;
- watch_init(&t->monotonic_watch);
- watch_init(&t->realtime_watch);
+ t->next_elapse_monotonic_or_boottime = USEC_INFINITY;
+ t->next_elapse_realtime = USEC_INFINITY;
+ t->accuracy_usec = u->manager->default_timer_accuracy_usec;
}
void timer_free_values(Timer *t) {
assert(t);
while ((v = t->values)) {
- LIST_REMOVE(TimerValue, value, t->values, v);
+ LIST_REMOVE(value, t->values, v);
if (v->calendar_spec)
calendar_spec_free(v->calendar_spec);
timer_free_values(t);
- unit_unwatch_timer(u, &t->monotonic_watch);
- unit_unwatch_timer(u, &t->realtime_watch);
+ t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source);
+ t->realtime_event_source = sd_event_source_unref(t->realtime_event_source);
- unit_ref_unset(&t->unit);
+ free(t->stamp_path);
}
static int timer_verify(Timer *t) {
return 0;
if (!t->values) {
- log_error_unit(UNIT(t)->id,
- "%s lacks value setting. Refusing.", UNIT(t)->id);
+ log_unit_error(UNIT(t)->id, "%s lacks value setting. Refusing.", UNIT(t)->id);
return -EINVAL;
}
static int timer_add_default_dependencies(Timer *t) {
int r;
+ TimerValue *v;
assert(t);
r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true);
if (r < 0)
return r;
+
+ LIST_FOREACH(value, v, t->values) {
+ if (v->base == TIMER_CALENDAR) {
+ r = unit_add_dependency_by_name(UNIT(t), UNIT_AFTER, SPECIAL_TIME_SYNC_TARGET, NULL, true);
+ if (r < 0)
+ return r;
+ break;
+ }
+ }
}
return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
}
+static int timer_setup_persistent(Timer *t) {
+ int r;
+
+ assert(t);
+
+ if (!t->persistent)
+ return 0;
+
+ if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) {
+
+ r = unit_require_mounts_for(UNIT(t), "/var/lib/systemd/timers");
+ if (r < 0)
+ return r;
+
+ t->stamp_path = strappend("/var/lib/systemd/timers/stamp-", UNIT(t)->id);
+ } else {
+ const char *e;
+
+ e = getenv("XDG_DATA_HOME");
+ if (e)
+ t->stamp_path = strjoin(e, "/systemd/timers/stamp-", UNIT(t)->id, NULL);
+ else {
+
+ _cleanup_free_ char *h = NULL;
+
+ r = get_home_dir(&h);
+ if (r < 0)
+ return log_error_errno(r, "Failed to determine home directory: %m");
+
+ t->stamp_path = strjoin(h, "/.local/share/systemd/timers/stamp-", UNIT(t)->id, NULL);
+ }
+ }
+
+ if (!t->stamp_path)
+ return log_oom();
+
+ return 0;
+}
+
static int timer_load(Unit *u) {
Timer *t = TIMER(u);
int r;
if (u->load_state == UNIT_LOADED) {
- if (!UNIT_DEREF(t->unit)) {
+ if (set_isempty(u->dependencies[UNIT_TRIGGERS])) {
Unit *x;
r = unit_load_related_unit(u, ".service", &x);
if (r < 0)
return r;
- unit_ref_set(&t->unit, x);
+ r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, x, true);
+ if (r < 0)
+ return r;
}
- r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(t->unit), true);
+ r = timer_setup_persistent(t);
if (r < 0)
return r;
- if (UNIT(t)->default_dependencies) {
+ if (u->default_dependencies) {
r = timer_add_default_dependencies(t);
if (r < 0)
return r;
}
static void timer_dump(Unit *u, FILE *f, const char *prefix) {
+ char buf[FORMAT_TIMESPAN_MAX];
Timer *t = TIMER(u);
+ Unit *trigger;
TimerValue *v;
+ trigger = UNIT_TRIGGER(u);
+
fprintf(f,
"%sTimer State: %s\n"
"%sResult: %s\n"
- "%sUnit: %s\n",
+ "%sUnit: %s\n"
+ "%sPersistent: %s\n"
+ "%sWakeSystem: %s\n"
+ "%sAccuracy: %s\n",
prefix, timer_state_to_string(t->state),
prefix, timer_result_to_string(t->result),
- prefix, UNIT_DEREF(t->unit)->id);
+ prefix, trigger ? trigger->id : "n/a",
+ prefix, yes_no(t->persistent),
+ prefix, yes_no(t->wake_system),
+ prefix, format_timespan(buf, sizeof(buf), t->accuracy_usec, 1));
LIST_FOREACH(value, v, t->values) {
"%s%s: %s\n",
prefix,
timer_base_to_string(v->base),
- strna(format_timespan(timespan1, sizeof(timespan1), v->value)));
+ format_timespan(timespan1, sizeof(timespan1), v->value, 0));
}
}
}
t->state = state;
if (state != TIMER_WAITING) {
- unit_unwatch_timer(UNIT(t), &t->monotonic_watch);
- unit_unwatch_timer(UNIT(t), &t->realtime_watch);
+ t->monotonic_event_source = sd_event_source_unref(t->monotonic_event_source);
+ t->realtime_event_source = sd_event_source_unref(t->realtime_event_source);
}
if (state != old_state)
- log_debug_unit(UNIT(t)->id,
+ log_unit_debug(UNIT(t)->id,
"%s changed %s -> %s", UNIT(t)->id,
timer_state_to_string(old_state),
timer_state_to_string(state));
timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD);
}
+static usec_t monotonic_to_boottime(usec_t t) {
+ usec_t a, b;
+
+ if (t <= 0)
+ return 0;
+
+ a = now(CLOCK_BOOTTIME);
+ b = now(CLOCK_MONOTONIC);
+
+ if (t + a > b)
+ return t + a - b;
+ else
+ return 0;
+}
+
static void timer_enter_waiting(Timer *t, bool initial) {
- TimerValue *v;
- usec_t base = 0;
- dual_timestamp ts;
bool found_monotonic = false, found_realtime = false;
+ usec_t ts_realtime, ts_monotonic;
+ usec_t base = 0;
+ TimerValue *v;
int r;
- dual_timestamp_get(&ts);
- t->next_elapse_monotonic = t->next_elapse_realtime = 0;
+ /* If we shall wake the system we use the boottime clock
+ * rather than the monotonic clock. */
+
+ ts_realtime = now(CLOCK_REALTIME);
+ ts_monotonic = now(t->wake_system ? CLOCK_BOOTTIME : CLOCK_MONOTONIC);
+ t->next_elapse_monotonic_or_boottime = t->next_elapse_realtime = 0;
LIST_FOREACH(value, v, t->values) {
continue;
if (v->base == TIMER_CALENDAR) {
+ usec_t b;
+
+ /* If we know the last time this was
+ * triggered, schedule the job based relative
+ * to that. If we don't just start from
+ * now. */
+
+ b = t->last_trigger.realtime > 0 ? t->last_trigger.realtime : ts_realtime;
- r = calendar_spec_next_usec(v->calendar_spec, ts.realtime, &v->next_elapse);
+ r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse);
if (r < 0)
continue;
- if (!initial && v->next_elapse < ts.realtime) {
- v->disabled = true;
- continue;
- }
-
if (!found_realtime)
t->next_elapse_realtime = v->next_elapse;
else
if (state_translation_table[t->state] == UNIT_ACTIVE)
base = UNIT(t)->inactive_exit_timestamp.monotonic;
else
- base = ts.monotonic;
+ base = ts_monotonic;
break;
case TIMER_BOOT:
case TIMER_UNIT_ACTIVE:
- if (UNIT_DEREF(t->unit)->inactive_exit_timestamp.monotonic <= 0)
+ base = UNIT_TRIGGER(UNIT(t))->inactive_exit_timestamp.monotonic;
+
+ if (base <= 0)
+ base = t->last_trigger.monotonic;
+
+ if (base <= 0)
continue;
- base = UNIT_DEREF(t->unit)->inactive_exit_timestamp.monotonic;
break;
case TIMER_UNIT_INACTIVE:
- if (UNIT_DEREF(t->unit)->inactive_enter_timestamp.monotonic <= 0)
+ base = UNIT_TRIGGER(UNIT(t))->inactive_enter_timestamp.monotonic;
+
+ if (base <= 0)
+ base = t->last_trigger.monotonic;
+
+ if (base <= 0)
continue;
- base = UNIT_DEREF(t->unit)->inactive_enter_timestamp.monotonic;
break;
default:
assert_not_reached("Unknown timer base");
}
+ if (t->wake_system)
+ base = monotonic_to_boottime(base);
+
v->next_elapse = base + v->value;
- if (!initial && v->next_elapse < ts.monotonic) {
+ if (!initial && v->next_elapse < ts_monotonic && IN_SET(v->base, TIMER_ACTIVE, TIMER_BOOT, TIMER_STARTUP)) {
+ /* This is a one time trigger, disable it now */
v->disabled = true;
continue;
}
if (!found_monotonic)
- t->next_elapse_monotonic = v->next_elapse;
+ t->next_elapse_monotonic_or_boottime = v->next_elapse;
else
- t->next_elapse_monotonic = MIN(t->next_elapse_monotonic, v->next_elapse);
+ t->next_elapse_monotonic_or_boottime = MIN(t->next_elapse_monotonic_or_boottime, v->next_elapse);
found_monotonic = true;
}
}
if (!found_monotonic && !found_realtime) {
- log_debug_unit(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id);
+ log_unit_debug(UNIT(t)->id, "%s: Timer is elapsed.", UNIT(t)->id);
timer_set_state(t, TIMER_ELAPSED);
return;
}
if (found_monotonic) {
char buf[FORMAT_TIMESPAN_MAX];
- log_debug_unit(UNIT(t)->id,
- "%s: Monotonic timer elapses in %s.",
+
+ log_unit_debug(UNIT(t)->id, "%s: Monotonic timer elapses in %s.",
UNIT(t)->id,
- format_timespan(buf, sizeof(buf), t->next_elapse_monotonic > ts.monotonic ? t->next_elapse_monotonic - ts.monotonic : 0));
+ format_timespan(buf, sizeof(buf), t->next_elapse_monotonic_or_boottime > ts_monotonic ? t->next_elapse_monotonic_or_boottime - ts_monotonic : 0, 0));
- r = unit_watch_timer(UNIT(t), CLOCK_MONOTONIC, false, t->next_elapse_monotonic, &t->monotonic_watch);
+ if (t->monotonic_event_source) {
+ r = sd_event_source_set_time(t->monotonic_event_source, t->next_elapse_monotonic_or_boottime);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT);
+ } else
+ r = sd_event_add_time(
+ UNIT(t)->manager->event,
+ &t->monotonic_event_source,
+ t->wake_system ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC,
+ t->next_elapse_monotonic_or_boottime, t->accuracy_usec,
+ timer_dispatch, t);
if (r < 0)
goto fail;
- } else
- unit_unwatch_timer(UNIT(t), &t->monotonic_watch);
+
+ } else if (t->monotonic_event_source) {
+
+ r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_OFF);
+ if (r < 0)
+ goto fail;
+ }
if (found_realtime) {
char buf[FORMAT_TIMESTAMP_MAX];
- log_debug_unit(UNIT(t)->id,
- "%s: Realtime timer elapses at %s.",
- UNIT(t)->id,
- format_timestamp(buf, sizeof(buf), t->next_elapse_realtime));
+ log_unit_debug(UNIT(t)->id, "%s: Realtime timer elapses at %s.", UNIT(t)->id, format_timestamp(buf, sizeof(buf), t->next_elapse_realtime));
- r = unit_watch_timer(UNIT(t), CLOCK_REALTIME, false, t->next_elapse_realtime, &t->realtime_watch);
+ if (t->realtime_event_source) {
+ r = sd_event_source_set_time(t->realtime_event_source, t->next_elapse_realtime);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_ONESHOT);
+ } else
+ r = sd_event_add_time(
+ UNIT(t)->manager->event,
+ &t->realtime_event_source,
+ t->wake_system ? CLOCK_REALTIME_ALARM : CLOCK_REALTIME,
+ t->next_elapse_realtime, t->accuracy_usec,
+ timer_dispatch, t);
if (r < 0)
goto fail;
- } else
- unit_unwatch_timer(UNIT(t), &t->realtime_watch);
+
+ } else if (t->realtime_event_source) {
+
+ r = sd_event_source_set_enabled(t->realtime_event_source, SD_EVENT_OFF);
+ if (r < 0)
+ goto fail;
+ }
timer_set_state(t, TIMER_WAITING);
return;
fail:
- log_warning_unit(UNIT(t)->id,
- "%s failed to enter waiting state: %s",
- UNIT(t)->id, strerror(-r));
+ log_unit_warning_errno(UNIT(t)->id, r, "%s failed to enter waiting state: %m", UNIT(t)->id);
timer_enter_dead(t, TIMER_FAILURE_RESOURCES);
}
static void timer_enter_running(Timer *t) {
- DBusError error;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(t);
- dbus_error_init(&error);
/* Don't start job if we are supposed to go down */
- if (UNIT(t)->job && UNIT(t)->job->type == JOB_STOP)
+ if (unit_stop_pending(UNIT(t)))
return;
- r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_DEREF(t->unit), JOB_REPLACE, true, &error, NULL);
+ r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_TRIGGER(UNIT(t)),
+ JOB_REPLACE, true, &error, NULL);
if (r < 0)
goto fail;
+ dual_timestamp_get(&t->last_trigger);
+
+ if (t->stamp_path)
+ touch_file(t->stamp_path, true, t->last_trigger.realtime, UID_INVALID, GID_INVALID, 0);
+
timer_set_state(t, TIMER_RUNNING);
return;
fail:
- log_warning_unit(UNIT(t)->id,
+ log_unit_warning(UNIT(t)->id,
"%s failed to queue unit startup job: %s",
- UNIT(t)->id, bus_error(&error, r));
+ UNIT(t)->id, bus_error_message(&error, r));
timer_enter_dead(t, TIMER_FAILURE_RESOURCES);
-
- dbus_error_free(&error);
}
static int timer_start(Unit *u) {
Timer *t = TIMER(u);
+ TimerValue *v;
assert(t);
assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED);
- if (UNIT_DEREF(t->unit)->load_state != UNIT_LOADED)
+ if (UNIT_TRIGGER(u)->load_state != UNIT_LOADED)
return -ENOENT;
+ t->last_trigger = DUAL_TIMESTAMP_NULL;
+
+ /* Reenable all timers that depend on unit activation time */
+ LIST_FOREACH(value, v, t->values)
+ if (v->base == TIMER_ACTIVE)
+ v->disabled = false;
+
+ if (t->stamp_path) {
+ struct stat st;
+
+ if (stat(t->stamp_path, &st) >= 0)
+ t->last_trigger.realtime = timespec_load(&st.st_atim);
+ else if (errno == ENOENT)
+ /* The timer has never run before,
+ * make sure a stamp file exists.
+ */
+ touch_file(t->stamp_path, true, USEC_INFINITY, UID_INVALID, GID_INVALID, 0);
+ }
+
t->result = TIMER_SUCCESS;
timer_enter_waiting(t, true);
- return 0;
+ return 1;
}
static int timer_stop(Unit *u) {
assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED);
timer_enter_dead(t, TIMER_SUCCESS);
- return 0;
+ return 1;
}
static int timer_serialize(Unit *u, FILE *f, FDSet *fds) {
unit_serialize_item(u, f, "state", timer_state_to_string(t->state));
unit_serialize_item(u, f, "result", timer_result_to_string(t->result));
+ if (t->last_trigger.realtime > 0)
+ unit_serialize_item_format(u, f, "last-trigger-realtime", "%" PRIu64, t->last_trigger.realtime);
+
+ if (t->last_trigger.monotonic > 0)
+ unit_serialize_item_format(u, f, "last-trigger-monotonic", "%" PRIu64, t->last_trigger.monotonic);
+
return 0;
}
static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
Timer *t = TIMER(u);
+ int r;
assert(u);
assert(key);
state = timer_state_from_string(value);
if (state < 0)
- log_debug_unit(u->id, "Failed to parse state value %s", value);
+ log_unit_debug(u->id, "Failed to parse state value %s", value);
else
t->deserialized_state = state;
} else if (streq(key, "result")) {
f = timer_result_from_string(value);
if (f < 0)
- log_debug_unit(u->id, "Failed to parse result value %s", value);
+ log_unit_debug(u->id, "Failed to parse result value %s", value);
else if (f != TIMER_SUCCESS)
t->result = f;
+ } else if (streq(key, "last-trigger-realtime")) {
+
+ r = safe_atou64(value, &t->last_trigger.realtime);
+ if (r < 0)
+ log_unit_debug(u->id, "Failed to parse last-trigger-realtime value %s", value);
+
+ } else if (streq(key, "last-trigger-monotonic")) {
+
+ r = safe_atou64(value, &t->last_trigger.monotonic);
+ if (r < 0)
+ log_unit_debug(u->id, "Failed to parse last-trigger-monotonic value %s", value);
} else
- log_debug_unit(u->id, "Unknown serialization key '%s'", key);
+ log_unit_debug(u->id, "Unknown serialization key '%s'", key);
return 0;
}
-static UnitActiveState timer_active_state(Unit *u) {
+_pure_ static UnitActiveState timer_active_state(Unit *u) {
assert(u);
return state_translation_table[TIMER(u)->state];
}
-static const char *timer_sub_state_to_string(Unit *u) {
+_pure_ static const char *timer_sub_state_to_string(Unit *u) {
assert(u);
return timer_state_to_string(TIMER(u)->state);
}
-static void timer_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
- Timer *t = TIMER(u);
+static int timer_dispatch(sd_event_source *s, uint64_t usec, void *userdata) {
+ Timer *t = TIMER(userdata);
assert(t);
- assert(elapsed == 1);
if (t->state != TIMER_WAITING)
- return;
+ return 0;
- log_debug_unit(u->id, "Timer elapsed on %s", u->id);
+ log_unit_debug(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id);
timer_enter_running(t);
+ return 0;
}
-void timer_unit_notify(Unit *u, UnitActiveState new_state) {
- Iterator i;
- Unit *k;
-
- if (u->type == UNIT_TIMER)
- return;
+static void timer_trigger_notify(Unit *u, Unit *other) {
+ Timer *t = TIMER(u);
+ TimerValue *v;
- SET_FOREACH(k, u->dependencies[UNIT_TRIGGERED_BY], i) {
- Timer *t;
- TimerValue *v;
+ assert(u);
+ assert(other);
- if (k->type != UNIT_TIMER)
- continue;
+ if (other->load_state != UNIT_LOADED)
+ return;
- if (k->load_state != UNIT_LOADED)
- continue;
+ /* Reenable all timers that depend on unit state */
+ LIST_FOREACH(value, v, t->values)
+ if (v->base == TIMER_UNIT_ACTIVE ||
+ v->base == TIMER_UNIT_INACTIVE)
+ v->disabled = false;
- t = TIMER(k);
+ switch (t->state) {
- /* Reenable all timers that depend on unit state */
- LIST_FOREACH(value, v, t->values)
- if (v->base == TIMER_UNIT_ACTIVE ||
- v->base == TIMER_UNIT_INACTIVE)
- v->disabled = false;
+ case TIMER_WAITING:
+ case TIMER_ELAPSED:
- switch (t->state) {
+ /* Recalculate sleep time */
+ timer_enter_waiting(t, false);
+ break;
- case TIMER_WAITING:
- case TIMER_ELAPSED:
+ case TIMER_RUNNING:
- /* Recalculate sleep time */
+ if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) {
+ log_unit_debug(UNIT(t)->id, "%s got notified about unit deactivation.", UNIT(t)->id);
timer_enter_waiting(t, false);
- break;
-
- case TIMER_RUNNING:
-
- if (UNIT_IS_INACTIVE_OR_FAILED(new_state)) {
- log_debug_unit(UNIT(t)->id,
- "%s got notified about unit deactivation.",
- UNIT(t)->id);
- timer_enter_waiting(t, false);
- }
-
- break;
+ }
+ break;
- case TIMER_DEAD:
- case TIMER_FAILED:
- break;
+ case TIMER_DEAD:
+ case TIMER_FAILED:
+ break;
- default:
- assert_not_reached("Unknown timer state");
- }
+ default:
+ assert_not_reached("Unknown timer state");
}
}
if (t->state != TIMER_WAITING)
return;
- log_debug_unit(u->id,
- "%s: time change, recalculating next elapse.", u->id);
+ log_unit_debug(u->id, "%s: time change, recalculating next elapse.", u->id);
timer_enter_waiting(t, false);
}
const UnitVTable timer_vtable = {
.object_size = sizeof(Timer),
+
.sections =
"Unit\0"
"Timer\0"
"Install\0",
+ .private_section = "Timer",
.init = timer_init,
.done = timer_done,
.active_state = timer_active_state,
.sub_state_to_string = timer_sub_state_to_string,
- .timer_event = timer_timer_event,
+ .trigger_notify = timer_trigger_notify,
.reset_failed = timer_reset_failed,
.time_change = timer_time_change,
.bus_interface = "org.freedesktop.systemd1.Timer",
- .bus_message_handler = bus_timer_message_handler,
- .bus_invalidating_properties = bus_timer_invalidating_properties
+ .bus_vtable = bus_timer_vtable,
+ .bus_set_property = bus_timer_set_property,
+
+ .can_transient = true,
};
~ianmdlvl / elogind.git / blobdiff