sd-event: split run into prepare/wait/dispatch

[elogind.git] / src / systemd / sd-event.h

diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
index 6ac2de88fa2366c28f2ee57cc11c4a100433bc99..8e013b33f6a6f8d4017098ee2658053f0bb17a98 100644 (file)
--- a/src/systemd/sd-event.h
+++ b/src/systemd/sd-event.h
@@ -28,15 +28,19 @@
 #include <inttypes.h>
 #include <signal.h>
 
+#include "_sd-common.h"
+
 /*
   Why is this better than pure epoll?
 
-  - Supports event source priorisation
-  - Scales better with a large number of time events, since it doesn't require one timerfd each
+  - Supports event source prioritization
+  - Scales better with a large number of time events because it does not require one timerfd each
   - Automatically tries to coalesce timer events system-wide
   - Handles signals and child PIDs
 */
 
+_SD_BEGIN_DECLARATIONS;
+
 typedef struct sd_event sd_event;
 typedef struct sd_event_source sd_event_source;
 
@@ -48,60 +52,82 @@ enum {
 
 enum {
         SD_EVENT_PASSIVE,
+        SD_EVENT_PREPARED,
+        SD_EVENT_PENDING,
         SD_EVENT_RUNNING,
-        SD_EVENT_QUITTING,
+        SD_EVENT_EXITING,
         SD_EVENT_FINISHED
 };
 
-typedef int (*sd_io_handler_t)(sd_event_source *s, int fd, uint32_t revents, void *userdata);
-typedef int (*sd_time_handler_t)(sd_event_source *s, uint64_t usec, void *userdata);
-typedef int (*sd_signal_handler_t)(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata);
-typedef int (*sd_child_handler_t)(sd_event_source *s, const siginfo_t *si, void *userdata);
-typedef int (*sd_defer_handler_t)(sd_event_source *s, void *userdata);
-typedef int (*sd_prepare_handler_t)(sd_event_source *s, void *userdata);
-typedef int (*sd_quit_handler_t)(sd_event_source *s, void *userdata);
+enum {
+        /* And everything in-between and outside is good too */
+        SD_EVENT_PRIORITY_IMPORTANT = -100,
+        SD_EVENT_PRIORITY_NORMAL = 0,
+        SD_EVENT_PRIORITY_IDLE = 100
+};
+
+typedef int (*sd_event_handler_t)(sd_event_source *s, void *userdata);
+typedef int (*sd_event_io_handler_t)(sd_event_source *s, int fd, uint32_t revents, void *userdata);
+typedef int (*sd_event_time_handler_t)(sd_event_source *s, uint64_t usec, void *userdata);
+typedef int (*sd_event_signal_handler_t)(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata);
+typedef int (*sd_event_child_handler_t)(sd_event_source *s, const siginfo_t *si, void *userdata);
+
+int sd_event_default(sd_event **e);
 
 int sd_event_new(sd_event **e);
 sd_event* sd_event_ref(sd_event *e);
 sd_event* sd_event_unref(sd_event *e);
 
-int sd_event_add_io(sd_event *e, int fd, uint32_t events, sd_io_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_monotonic(sd_event *e, uint64_t usec, uint64_t accuracy, sd_time_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_realtime(sd_event *e, uint64_t usec, uint64_t accuracy, sd_time_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_signal(sd_event *e, int sig, sd_signal_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_child(sd_event *e, pid_t pid, int options, sd_child_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_defer(sd_event *e, sd_defer_handler_t callback, void *userdata, sd_event_source **s);
-int sd_event_add_quit(sd_event *e, sd_quit_handler_t callback, void *userdata, sd_event_source **s);
-
+int sd_event_add_io(sd_event *e, sd_event_source **s, int fd, uint32_t events, sd_event_io_handler_t callback, void *userdata);
+int sd_event_add_time(sd_event *e, sd_event_source **s, clockid_t clock, uint64_t usec, uint64_t accuracy, sd_event_time_handler_t callback, void *userdata);
+int sd_event_add_signal(sd_event *e, sd_event_source **s, int sig, sd_event_signal_handler_t callback, void *userdata);
+int sd_event_add_child(sd_event *e, sd_event_source **s, pid_t pid, int options, sd_event_child_handler_t callback, void *userdata);
+int sd_event_add_defer(sd_event *e, sd_event_source **s, sd_event_handler_t callback, void *userdata);
+int sd_event_add_post(sd_event *e, sd_event_source **s, sd_event_handler_t callback, void *userdata);
+int sd_event_add_exit(sd_event *e, sd_event_source **s, sd_event_handler_t callback, void *userdata);
+
+int sd_event_prepare(sd_event *e);
+int sd_event_wait(sd_event *e, uint64_t timeout);
+int sd_event_dispatch(sd_event *e);
 int sd_event_run(sd_event *e, uint64_t timeout);
 int sd_event_loop(sd_event *e);
+int sd_event_exit(sd_event *e, int code);
 
+int sd_event_now(sd_event *e, clockid_t clock, uint64_t *usec);
+
+int sd_event_get_fd(sd_event *e);
 int sd_event_get_state(sd_event *e);
-int sd_event_get_quit(sd_event *e);
-int sd_event_request_quit(sd_event *e);
-int sd_event_get_now_realtime(sd_event *e, uint64_t *usec);
-int sd_event_get_now_monotonic(sd_event *e, uint64_t *usec);
-sd_event *sd_event_get(sd_event_source *s);
+int sd_event_get_tid(sd_event *e, pid_t *tid);
+int sd_event_get_exit_code(sd_event *e, int *code);
+int sd_event_set_watchdog(sd_event *e, int b);
+int sd_event_get_watchdog(sd_event *e);
 
 sd_event_source* sd_event_source_ref(sd_event_source *s);
 sd_event_source* sd_event_source_unref(sd_event_source *s);
 
-int sd_event_source_set_prepare(sd_event_source *s, sd_prepare_handler_t callback);
+sd_event *sd_event_source_get_event(sd_event_source *s);
+void* sd_event_source_get_userdata(sd_event_source *s);
+void* sd_event_source_set_userdata(sd_event_source *s, void *userdata);
+
+int sd_event_source_set_prepare(sd_event_source *s, sd_event_handler_t callback);
 int sd_event_source_get_pending(sd_event_source *s);
-int sd_event_source_get_priority(sd_event_source *s, int *priority);
-int sd_event_source_set_priority(sd_event_source *s, int priority);
+int sd_event_source_get_priority(sd_event_source *s, int64_t *priority);
+int sd_event_source_set_priority(sd_event_source *s, int64_t priority);
 int sd_event_source_get_enabled(sd_event_source *s, int *enabled);
 int sd_event_source_set_enabled(sd_event_source *s, int enabled);
-void* sd_event_source_get_userdata(sd_event_source *s);
 int sd_event_source_get_io_fd(sd_event_source *s);
+int sd_event_source_set_io_fd(sd_event_source *s, int fd);
 int sd_event_source_get_io_events(sd_event_source *s, uint32_t* events);
 int sd_event_source_set_io_events(sd_event_source *s, uint32_t events);
 int sd_event_source_get_io_revents(sd_event_source *s, uint32_t* revents);
 int sd_event_source_get_time(sd_event_source *s, uint64_t *usec);
 int sd_event_source_set_time(sd_event_source *s, uint64_t usec);
-int sd_event_source_set_time_accuracy(sd_event_source *s, uint64_t usec);
 int sd_event_source_get_time_accuracy(sd_event_source *s, uint64_t *usec);
+int sd_event_source_set_time_accuracy(sd_event_source *s, uint64_t usec);
+int sd_event_source_get_time_clock(sd_event_source *s, clockid_t *clock);
 int sd_event_source_get_signal(sd_event_source *s);
 int sd_event_source_get_child_pid(sd_event_source *s, pid_t *pid);
 
+_SD_END_DECLARATIONS;
+
 #endif