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authorLennart Poettering <lennart@poettering.net>2013-11-19 21:12:59 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-20 20:52:36 +0100
commit718db96199eb307751264e4163555662c9a389fa (patch)
tree9ec8467596ba1acba76bb6273c7797baf68c1a00 /src/core/timer.c
parent3febea3a0b0a968ea281e7959c1654cbaf95c9bf (diff)
core: convert PID 1 to libsystemd-bus
This patch converts PID 1 to libsystemd-bus and thus drops the dependency on libdbus. The only remaining code using libdbus is a test case that validates our bus marshalling against libdbus' marshalling, and this dependency can be turned off. This patch also adds a couple of things to libsystem-bus, that are necessary to make the port work: - Synthesizing of "Disconnected" messages when bus connections are severed. - Support for attaching multiple vtables for the same interface on the same path. This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus calls which used an inappropriate signature. As a side effect we will now generate PropertiesChanged messages which carry property contents, rather than just invalidation information.
Diffstat (limited to 'src/core/timer.c')
-rw-r--r--src/core/timer.c78
1 files changed, 51 insertions, 27 deletions
diff --git a/src/core/timer.c b/src/core/timer.c
index b90c85f823..5bc01a26ff 100644
--- a/src/core/timer.c
+++ b/src/core/timer.c
@@ -26,7 +26,8 @@
#include "timer.h"
#include "dbus-timer.h"
#include "special.h"
-#include "dbus-common.h"
+#include "bus-util.h"
+#include "bus-error.h"
static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = {
[TIMER_DEAD] = UNIT_INACTIVE,
@@ -36,6 +37,8 @@ static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = {
[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);
@@ -44,8 +47,6 @@ static void timer_init(Unit *u) {
t->next_elapse_monotonic = (usec_t) -1;
t->next_elapse_realtime = (usec_t) -1;
- watch_init(&t->monotonic_watch);
- watch_init(&t->realtime_watch);
}
void timer_free_values(Timer *t) {
@@ -70,8 +71,8 @@ static void timer_done(Unit *u) {
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);
}
static int timer_verify(Timer *t) {
@@ -189,8 +190,8 @@ static void timer_set_state(Timer *t, TimerState state) {
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)
@@ -230,6 +231,7 @@ static void timer_enter_dead(Timer *t, TimerResult f) {
timer_set_state(t, t->result != TIMER_SUCCESS ? TIMER_FAILED : TIMER_DEAD);
}
+
static void timer_enter_waiting(Timer *t, bool initial) {
TimerValue *v;
usec_t base = 0;
@@ -337,11 +339,24 @@ static void timer_enter_waiting(Timer *t, bool initial) {
UNIT(t)->id,
format_timespan(buf, sizeof(buf), t->next_elapse_monotonic > ts.monotonic ? t->next_elapse_monotonic - 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);
+ if (r < 0)
+ goto fail;
+
+ r = sd_event_source_set_enabled(t->monotonic_event_source, SD_EVENT_ONESHOT);
+ } else
+ r = sd_event_add_monotonic(UNIT(t)->manager->event, t->next_elapse_monotonic, 0, timer_dispatch, t, &t->monotonic_event_source);
+
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];
@@ -350,11 +365,24 @@ static void timer_enter_waiting(Timer *t, bool initial) {
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_realtime(UNIT(t)->manager->event, t->next_elapse_realtime, 0, timer_dispatch, t, &t->realtime_event_source);
+
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;
@@ -367,11 +395,10 @@ fail:
}
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_stop_pending(UNIT(t)))
@@ -390,10 +417,8 @@ static void timer_enter_running(Timer *t) {
fail:
log_warning_unit(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) {
@@ -476,17 +501,17 @@ _pure_ static const char *timer_sub_state_to_string(Unit *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_debug_unit(UNIT(t)->id, "Timer elapsed on %s", UNIT(t)->id);
timer_enter_running(t);
+ return 0;
}
static void timer_trigger_notify(Unit *u, Unit *other) {
@@ -587,6 +612,7 @@ DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult);
const UnitVTable timer_vtable = {
.object_size = sizeof(Timer),
+
.sections =
"Unit\0"
"Timer\0"
@@ -609,14 +635,12 @@ const UnitVTable timer_vtable = {
.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_changing_properties = bus_timer_changing_properties,
};