diff options
Diffstat (limited to 'src/core/timer.c')
| -rw-r--r-- | src/core/timer.c | 519 |
1 files changed, 0 insertions, 519 deletions
diff --git a/src/core/timer.c b/src/core/timer.c deleted file mode 100644 index 7080b32c6b..0000000000 --- a/src/core/timer.c +++ /dev/null @@ -1,519 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - 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> - -#include "unit.h" -#include "unit-name.h" -#include "timer.h" -#include "dbus-timer.h" -#include "special.h" -#include "bus-errors.h" - -static const UnitActiveState state_translation_table[_TIMER_STATE_MAX] = { - [TIMER_DEAD] = UNIT_INACTIVE, - [TIMER_WAITING] = UNIT_ACTIVE, - [TIMER_RUNNING] = UNIT_ACTIVE, - [TIMER_ELAPSED] = UNIT_ACTIVE, - [TIMER_FAILED] = UNIT_FAILED -}; - -static void timer_init(Unit *u) { - Timer *t = TIMER(u); - - assert(u); - assert(u->load_state == UNIT_STUB); - - t->next_elapse = (usec_t) -1; -} - -static void timer_done(Unit *u) { - Timer *t = TIMER(u); - TimerValue *v; - - assert(t); - - while ((v = t->values)) { - LIST_REMOVE(TimerValue, value, t->values, v); - free(v); - } - - unit_unwatch_timer(u, &t->timer_watch); - - unit_ref_unset(&t->unit); -} - -static int timer_verify(Timer *t) { - assert(t); - - if (UNIT(t)->load_state != UNIT_LOADED) - return 0; - - if (!t->values) { - log_error("%s lacks value setting. Refusing.", UNIT(t)->id); - return -EINVAL; - } - - return 0; -} - -static int timer_add_default_dependencies(Timer *t) { - int r; - - assert(t); - - if (UNIT(t)->manager->running_as == SYSTEMD_SYSTEM) { - if ((r = unit_add_dependency_by_name(UNIT(t), UNIT_BEFORE, SPECIAL_BASIC_TARGET, NULL, true)) < 0) - return r; - - if ((r = unit_add_two_dependencies_by_name(UNIT(t), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0) - return r; - } - - return unit_add_two_dependencies_by_name(UNIT(t), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); -} - -static int timer_load(Unit *u) { - Timer *t = TIMER(u); - int r; - - assert(u); - assert(u->load_state == UNIT_STUB); - - if ((r = unit_load_fragment_and_dropin(u)) < 0) - return r; - - if (u->load_state == UNIT_LOADED) { - - if (!UNIT_DEREF(t->unit)) { - 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, UNIT_DEREF(t->unit), true); - if (r < 0) - return r; - - if (UNIT(t)->default_dependencies) - if ((r = timer_add_default_dependencies(t)) < 0) - return r; - } - - return timer_verify(t); -} - -static void timer_dump(Unit *u, FILE *f, const char *prefix) { - Timer *t = TIMER(u); - TimerValue *v; - char - timespan1[FORMAT_TIMESPAN_MAX]; - - fprintf(f, - "%sTimer State: %s\n" - "%sResult: %s\n" - "%sUnit: %s\n", - prefix, timer_state_to_string(t->state), - prefix, timer_result_to_string(t->result), - prefix, UNIT_DEREF(t->unit)->id); - - LIST_FOREACH(value, v, t->values) - fprintf(f, - "%s%s: %s\n", - prefix, - timer_base_to_string(v->base), - strna(format_timespan(timespan1, sizeof(timespan1), v->value))); -} - -static void timer_set_state(Timer *t, TimerState state) { - TimerState old_state; - assert(t); - - old_state = t->state; - t->state = state; - - if (state != TIMER_WAITING) - unit_unwatch_timer(UNIT(t), &t->timer_watch); - - if (state != old_state) - log_debug("%s changed %s -> %s", - UNIT(t)->id, - timer_state_to_string(old_state), - timer_state_to_string(state)); - - unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true); -} - -static void timer_enter_waiting(Timer *t, bool initial); - -static int timer_coldplug(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - assert(t->state == TIMER_DEAD); - - if (t->deserialized_state != t->state) { - - if (t->deserialized_state == TIMER_WAITING) - timer_enter_waiting(t, false); - else - timer_set_state(t, t->deserialized_state); - } - - return 0; -} - -static void timer_enter_dead(Timer *t, TimerResult f) { - assert(t); - - if (f != TIMER_SUCCESS) - t->result = 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, delay, n; - bool found = false; - int r; - - n = now(CLOCK_MONOTONIC); - - LIST_FOREACH(value, v, t->values) { - - if (v->disabled) - continue; - - switch (v->base) { - - case TIMER_ACTIVE: - if (state_translation_table[t->state] == UNIT_ACTIVE) - base = UNIT(t)->inactive_exit_timestamp.monotonic; - else - base = n; - break; - - case TIMER_BOOT: - /* CLOCK_MONOTONIC equals the uptime on Linux */ - base = 0; - break; - - case TIMER_STARTUP: - base = UNIT(t)->manager->userspace_timestamp.monotonic; - break; - - case TIMER_UNIT_ACTIVE: - - if (UNIT_DEREF(t->unit)->inactive_exit_timestamp.monotonic <= 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) - continue; - - base = UNIT_DEREF(t->unit)->inactive_enter_timestamp.monotonic; - break; - - default: - assert_not_reached("Unknown timer base"); - } - - v->next_elapse = base + v->value; - - if (!initial && v->next_elapse < n) { - v->disabled = true; - continue; - } - - if (!found) - t->next_elapse = v->next_elapse; - else - t->next_elapse = MIN(t->next_elapse, v->next_elapse); - - found = true; - } - - if (!found) { - timer_set_state(t, TIMER_ELAPSED); - return; - } - - delay = n < t->next_elapse ? t->next_elapse - n : 0; - - if ((r = unit_watch_timer(UNIT(t), delay, &t->timer_watch)) < 0) - goto fail; - - timer_set_state(t, TIMER_WAITING); - return; - -fail: - log_warning("%s failed to enter waiting state: %s", UNIT(t)->id, strerror(-r)); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); -} - -static void timer_enter_running(Timer *t) { - DBusError error; - 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) - return; - - if ((r = manager_add_job(UNIT(t)->manager, JOB_START, UNIT_DEREF(t->unit), JOB_REPLACE, true, &error, NULL)) < 0) - goto fail; - - timer_set_state(t, TIMER_RUNNING); - return; - -fail: - log_warning("%s failed to queue unit startup job: %s", UNIT(t)->id, bus_error(&error, r)); - timer_enter_dead(t, TIMER_FAILURE_RESOURCES); - - dbus_error_free(&error); -} - -static int timer_start(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - assert(t->state == TIMER_DEAD || t->state == TIMER_FAILED); - - if (UNIT_DEREF(t->unit)->load_state != UNIT_LOADED) - return -ENOENT; - - t->result = TIMER_SUCCESS; - timer_enter_waiting(t, true); - return 0; -} - -static int timer_stop(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - assert(t->state == TIMER_WAITING || t->state == TIMER_RUNNING || t->state == TIMER_ELAPSED); - - timer_enter_dead(t, TIMER_SUCCESS); - return 0; -} - -static int timer_serialize(Unit *u, FILE *f, FDSet *fds) { - Timer *t = TIMER(u); - - assert(u); - assert(f); - assert(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)); - - return 0; -} - -static int timer_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { - Timer *t = TIMER(u); - - assert(u); - assert(key); - assert(value); - assert(fds); - - if (streq(key, "state")) { - TimerState state; - - if ((state = timer_state_from_string(value)) < 0) - log_debug("Failed to parse state value %s", value); - else - t->deserialized_state = state; - } else if (streq(key, "result")) { - TimerResult f; - - f = timer_result_from_string(value); - if (f < 0) - log_debug("Failed to parse result value %s", value); - else if (f != TIMER_SUCCESS) - t->result = f; - - } else - log_debug("Unknown serialization key '%s'", key); - - return 0; -} - -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) { - 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); - - assert(t); - assert(elapsed == 1); - - if (t->state != TIMER_WAITING) - return; - - log_debug("Timer elapsed on %s", u->id); - timer_enter_running(t); -} - -void timer_unit_notify(Unit *u, UnitActiveState new_state) { - Iterator i; - Unit *k; - - if (u->type == UNIT_TIMER) - return; - - SET_FOREACH(k, u->dependencies[UNIT_TRIGGERED_BY], i) { - Timer *t; - TimerValue *v; - - if (k->type != UNIT_TIMER) - continue; - - if (k->load_state != UNIT_LOADED) - continue; - - t = TIMER(k); - - /* 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; - - switch (t->state) { - - case TIMER_WAITING: - case TIMER_ELAPSED: - - /* Recalculate sleep time */ - timer_enter_waiting(t, false); - break; - - case TIMER_RUNNING: - - if (UNIT_IS_INACTIVE_OR_FAILED(new_state)) { - log_debug("%s got notified about unit deactivation.", UNIT(t)->id); - timer_enter_waiting(t, false); - } - - break; - - case TIMER_DEAD: - case TIMER_FAILED: - break; - - default: - assert_not_reached("Unknown timer state"); - } - } -} - -static void timer_reset_failed(Unit *u) { - Timer *t = TIMER(u); - - assert(t); - - if (t->state == TIMER_FAILED) - timer_set_state(t, TIMER_DEAD); - - t->result = TIMER_SUCCESS; -} - -static const char* const timer_state_table[_TIMER_STATE_MAX] = { - [TIMER_DEAD] = "dead", - [TIMER_WAITING] = "waiting", - [TIMER_RUNNING] = "running", - [TIMER_ELAPSED] = "elapsed", - [TIMER_FAILED] = "failed" -}; - -DEFINE_STRING_TABLE_LOOKUP(timer_state, TimerState); - -static const char* const timer_base_table[_TIMER_BASE_MAX] = { - [TIMER_ACTIVE] = "OnActiveSec", - [TIMER_BOOT] = "OnBootSec", - [TIMER_STARTUP] = "OnStartupSec", - [TIMER_UNIT_ACTIVE] = "OnUnitActiveSec", - [TIMER_UNIT_INACTIVE] = "OnUnitInactiveSec" -}; - -DEFINE_STRING_TABLE_LOOKUP(timer_base, TimerBase); - -static const char* const timer_result_table[_TIMER_RESULT_MAX] = { - [TIMER_SUCCESS] = "success", - [TIMER_FAILURE_RESOURCES] = "resources" -}; - -DEFINE_STRING_TABLE_LOOKUP(timer_result, TimerResult); - -const UnitVTable timer_vtable = { - .object_size = sizeof(Timer), - .sections = - "Unit\0" - "Timer\0" - "Install\0", - - .init = timer_init, - .done = timer_done, - .load = timer_load, - - .coldplug = timer_coldplug, - - .dump = timer_dump, - - .start = timer_start, - .stop = timer_stop, - - .serialize = timer_serialize, - .deserialize_item = timer_deserialize_item, - - .active_state = timer_active_state, - .sub_state_to_string = timer_sub_state_to_string, - - .timer_event = timer_timer_event, - - .reset_failed = timer_reset_failed, - - .bus_interface = "org.freedesktop.systemd1.Timer", - .bus_message_handler = bus_timer_message_handler, - .bus_invalidating_properties = bus_timer_invalidating_properties -}; |