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-rw-r--r--src/core/timer.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/src/core/timer.h b/src/core/timer.h
new file mode 100644
index 0000000..14fa317
--- /dev/null
+++ b/src/core/timer.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+typedef struct Timer Timer;
+
+#include "calendarspec.h"
+#include "unit.h"
+
+typedef enum TimerBase {
+ TIMER_ACTIVE,
+ TIMER_BOOT,
+ TIMER_STARTUP,
+ TIMER_UNIT_ACTIVE,
+ TIMER_UNIT_INACTIVE,
+ TIMER_CALENDAR,
+ _TIMER_BASE_MAX,
+ _TIMER_BASE_INVALID = -1
+} TimerBase;
+
+typedef struct TimerValue {
+ TimerBase base;
+ bool disabled;
+
+ usec_t value; /* only for monotonic events */
+ CalendarSpec *calendar_spec; /* only for calendar events */
+ usec_t next_elapse;
+
+ LIST_FIELDS(struct TimerValue, value);
+} TimerValue;
+
+typedef enum TimerResult {
+ TIMER_SUCCESS,
+ TIMER_FAILURE_RESOURCES,
+ TIMER_FAILURE_START_LIMIT_HIT,
+ _TIMER_RESULT_MAX,
+ _TIMER_RESULT_INVALID = -1
+} TimerResult;
+
+struct Timer {
+ Unit meta;
+
+ usec_t accuracy_usec;
+ usec_t random_usec;
+
+ LIST_HEAD(TimerValue, values);
+ usec_t next_elapse_realtime;
+ usec_t next_elapse_monotonic_or_boottime;
+ dual_timestamp last_trigger;
+
+ TimerState state, deserialized_state;
+
+ sd_event_source *monotonic_event_source;
+ sd_event_source *realtime_event_source;
+
+ TimerResult result;
+
+ bool persistent;
+ bool wake_system;
+ bool remain_after_elapse;
+ bool on_clock_change;
+ bool on_timezone_change;
+ bool fixed_random_delay;
+
+ char *stamp_path;
+};
+
+#define TIMER_MONOTONIC_CLOCK(t) ((t)->wake_system && clock_boottime_supported() ? CLOCK_BOOTTIME_ALARM : CLOCK_MONOTONIC)
+
+void timer_free_values(Timer *t);
+
+extern const UnitVTable timer_vtable;
+
+const char *timer_base_to_string(TimerBase i) _const_;
+TimerBase timer_base_from_string(const char *s) _pure_;
+
+const char* timer_result_to_string(TimerResult i) _const_;
+TimerResult timer_result_from_string(const char *s) _pure_;
+
+DEFINE_CAST(TIMER, Timer);