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#ifndef EV_H |
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#define EV_H |
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typedef double ev_tstamp; |
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/* eventmask, revents, events... */ |
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#define EV_UNDEF -1 /* guaranteed to be invalid */ |
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#define EV_NONE 0 |
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#define EV_READ 1 |
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#define EV_WRITE 2 |
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#define EV_TIMEOUT 4 |
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#define EV_SIGNAL 8 |
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/* shared by all watchers */ |
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#define EV_WATCHER(type) \ |
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int active; /* private */ \ |
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int pending; /* private */ \ |
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void *data; /* rw */ \ |
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void (*cb)(struct type *, int revents) /* rw */ |
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#define EV_WATCHER_LIST(type) \ |
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EV_WATCHER (type); \ |
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struct type *next /* private */ |
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struct ev_timer |
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{ |
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EV_WATCHER_LIST (ev_timer); |
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ev_tstamp at; /* private */ |
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ev_tstamp repeat; /* rw */ |
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unsigned char is_abs; /* ro */ |
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}; |
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struct ev_io |
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{ |
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EV_WATCHER_LIST (ev_io); |
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int fd; /* ro */ |
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int events; /* ro */ |
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}; |
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struct ev_signal |
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{ |
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EV_WATCHER_LIST (ev_signal); |
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int signum; /* ro */ |
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}; |
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#define EVMETHOD_NONE 0 |
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#define EVMETHOD_SELECT 1 |
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#define EVMETHOD_EPOLL 2 |
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int ev_init (int flags); |
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extern int ev_method; |
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void ev_prefork (void); |
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void ev_postfork_parent (void); |
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void ev_postfork_child (void); |
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extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
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ev_tstamp ev_time (void); |
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#define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
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#define EVLOOP_ONESHOT 2 /* block *once* only */ |
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void ev_loop (int flags); |
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extern int ev_loop_done; /* set to 1 to break out of event loop */ |
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/* these may evaluate ev multiple times, and the other arguments at most once */ |
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#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0) |
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#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
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#define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0) |
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#define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0) |
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#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
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void evio_start (struct ev_io *w); |
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void evio_stop (struct ev_io *w); |
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void evtimer_start (struct ev_timer *w); |
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void evtimer_stop (struct ev_timer *w); |
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void evsignal_start (struct ev_signal *w); |
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void evsignal_stop (struct ev_signal *w); |
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#endif |
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