diff options
Diffstat (limited to 'ev.h')
| -rw-r--r-- | ev.h | 73 |
1 files changed, 54 insertions, 19 deletions
@@ -13,25 +13,47 @@ typedef double ev_tstamp; #define EV_IDLE 0x10 #define EV_CHECK 0x20 +/* can be used to add custom fields to all watchers */ +#ifndef EV_COMMON +# define EV_COMMON void *data +#endif + +/* + * struct member types: + * private: you can look at them, but not change them, and they might not mean anything to you. + * ro: can be read anytime, but only changed when the watcher isn't active + * rw: can be read and modified anytime, even when the watcher is active + */ + /* shared by all watchers */ #define EV_WATCHER(type) \ int active; /* private */ \ int pending; /* private */ \ - void *data; /* rw */ \ - void (*cb)(struct type *, int revents) /* rw */ /* gets invoked with an eventmask */ + EV_COMMON; /* rw */ \ + void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ #define EV_WATCHER_LIST(type) \ EV_WATCHER (type); \ struct type *next /* private */ -/* invoked at a specific time or after a specific time, repeatable */ +#define EV_WATCHER_TIME(type) \ + EV_WATCHER (type); \ + ev_tstamp at /* private */ + +/* invoked after a specific time, repeatable (based on monotonic clock) */ struct ev_timer { - EV_WATCHER_LIST (ev_timer); + EV_WATCHER_TIME (ev_timer); - ev_tstamp at; /* private */ ev_tstamp repeat; /* rw */ - unsigned char is_abs; /* ro */ +}; + +/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ +struct ev_periodic +{ + EV_WATCHER_TIME (ev_periodic); + + ev_tstamp interval; /* rw */ }; /* invoked when fd is either EV_READable or EV_WRITEable */ @@ -83,31 +105,44 @@ void ev_loop (int flags); extern int ev_loop_done; /* set to 1 to break out of event loop */ /* these may evaluate ev multiple times, and the other arguments at most once */ -#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0) +/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ +#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->cb = (cb_); } while (0) #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) -#define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0) -#define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0) +#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) +#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) +#define evcheck_set(ev) /* nop, yes this is a serious in-joke */ +#define evidle_set(ev) /* nop, yes this is a serious in-joke */ + +#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) +#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) +#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) +#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) +#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) +#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ /* stopping (enabling, adding) a watcher does nothing if it is already running */ /* stopping (disabling, deleting) a watcher does nothing unless its already running */ -void evio_start (struct ev_io *w); -void evio_stop (struct ev_io *w); +void evio_start (struct ev_io *w); +void evio_stop (struct ev_io *w); + +void evtimer_start (struct ev_timer *w); +void evtimer_stop (struct ev_timer *w); -void evtimer_start (struct ev_timer *w); -void evtimer_stop (struct ev_timer *w); +void evperiodic_start (struct ev_periodic *w); +void evperiodic_stop (struct ev_periodic *w); -void evsignal_start (struct ev_signal *w); -void evsignal_stop (struct ev_signal *w); +void evsignal_start (struct ev_signal *w); +void evsignal_stop (struct ev_signal *w); -void evidle_start (struct ev_idle *w); -void evidle_stop (struct ev_idle *w); +void evidle_start (struct ev_idle *w); +void evidle_stop (struct ev_idle *w); -void evcheck_start (struct ev_check *w); -void evcheck_stop (struct ev_check *w); +void evcheck_start (struct ev_check *w); +void evcheck_stop (struct ev_check *w); #endif |