X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsystemd%2Fsd-event.h;h=5d9b3be6c7db59c17a209ee2c66296d476eae34e;hp=6ac2de88fa2366c28f2ee57cc11c4a100433bc99;hb=0014a4ad505d119c7ac4346d9d774c3f17f663a5;hpb=40ca29a1370379d43e44c0ed425eecc7218dcbca diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h index 6ac2de88f..5d9b3be6c 100644 --- a/src/systemd/sd-event.h +++ b/src/systemd/sd-event.h @@ -28,15 +28,19 @@ #include #include +#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; @@ -49,59 +53,75 @@ enum { enum { SD_EVENT_PASSIVE, 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_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_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