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35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
40 | #ifndef EV_H__ |
40 | #ifndef EV_H_ |
41 | #define EV_H__ |
41 | #define EV_H_ |
42 | |
42 | |
43 | #ifdef __cplusplus |
43 | #ifdef __cplusplus |
44 | extern "C" { |
44 | extern "C" { |
45 | #endif |
45 | #endif |
46 | |
46 | |
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78 | # define EV_EMBED_ENABLE 1 |
78 | # define EV_EMBED_ENABLE 1 |
79 | #endif |
79 | #endif |
80 | |
80 | |
81 | #ifndef EV_ASYNC_ENABLE |
81 | #ifndef EV_ASYNC_ENABLE |
82 | # define EV_ASYNC_ENABLE 1 |
82 | # define EV_ASYNC_ENABLE 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_WALK_ENABLE |
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86 | # define EV_WALK_ENABLE 0 /* not yet */ |
83 | #endif |
87 | #endif |
84 | |
88 | |
85 | #ifndef EV_ATOMIC_T |
89 | #ifndef EV_ATOMIC_T |
86 | # include <signal.h> |
90 | # include <signal.h> |
87 | # define EV_ATOMIC_T sig_atomic_t volatile |
91 | # define EV_ATOMIC_T sig_atomic_t volatile |
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157 | #ifndef EV_PROTOTYPES |
161 | #ifndef EV_PROTOTYPES |
158 | # define EV_PROTOTYPES 1 |
162 | # define EV_PROTOTYPES 1 |
159 | #endif |
163 | #endif |
160 | |
164 | |
161 | #define EV_VERSION_MAJOR 3 |
165 | #define EV_VERSION_MAJOR 3 |
162 | #define EV_VERSION_MINOR 0 |
166 | #define EV_VERSION_MINOR 7 |
163 | |
167 | |
164 | #ifndef EV_CB_DECLARE |
168 | #ifndef EV_CB_DECLARE |
165 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
169 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
166 | #endif |
170 | #endif |
167 | #ifndef EV_CB_INVOKE |
171 | #ifndef EV_CB_INVOKE |
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183 | * or simply 1 for watchers that aren't in some array. |
187 | * or simply 1 for watchers that aren't in some array. |
184 | * pending is either 0, in which case the watcher isn't, |
188 | * pending is either 0, in which case the watcher isn't, |
185 | * or the array index + 1 in the pendings array. |
189 | * or the array index + 1 in the pendings array. |
186 | */ |
190 | */ |
187 | |
191 | |
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192 | #if EV_MINPRI == EV_MAXPRI |
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193 | # define EV_DECL_PRIORITY |
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194 | #else |
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195 | # define EV_DECL_PRIORITY int priority; |
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196 | #endif |
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197 | |
188 | /* shared by all watchers */ |
198 | /* shared by all watchers */ |
189 | #define EV_WATCHER(type) \ |
199 | #define EV_WATCHER(type) \ |
190 | int active; /* private */ \ |
200 | int active; /* private */ \ |
191 | int pending; /* private */ \ |
201 | int pending; /* private */ \ |
192 | int priority; /* private */ \ |
202 | EV_DECL_PRIORITY /* private */ \ |
193 | EV_COMMON /* rw */ \ |
203 | EV_COMMON /* rw */ \ |
194 | EV_CB_DECLARE (type) /* private */ |
204 | EV_CB_DECLARE (type) /* private */ |
195 | |
205 | |
196 | #define EV_WATCHER_LIST(type) \ |
206 | #define EV_WATCHER_LIST(type) \ |
197 | EV_WATCHER (type) \ |
207 | EV_WATCHER (type) \ |
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392 | /* the default */ |
402 | /* the default */ |
393 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
403 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
394 | /* flag bits */ |
404 | /* flag bits */ |
395 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
405 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
396 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
406 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
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407 | /* debugging/feature disable */ |
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408 | #define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */ |
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409 | #define EVFLAG_NOSIGFD 0x00200000U /* do not attempt to use signalfd */ |
397 | /* method bits to be ored together */ |
410 | /* method bits to be ored together */ |
398 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
411 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
399 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
412 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
400 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
413 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
401 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
414 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
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455 | |
468 | |
456 | /* create and destroy alternative loops that don't handle signals */ |
469 | /* create and destroy alternative loops that don't handle signals */ |
457 | struct ev_loop *ev_loop_new (unsigned int flags); |
470 | struct ev_loop *ev_loop_new (unsigned int flags); |
458 | void ev_loop_destroy (EV_P); |
471 | void ev_loop_destroy (EV_P); |
459 | void ev_loop_fork (EV_P); |
472 | void ev_loop_fork (EV_P); |
460 | void ev_loop_verify (EV_P); |
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461 | |
473 | |
462 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
474 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
463 | void ev_now_update (EV_P); |
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464 | |
475 | |
465 | #else |
476 | #else |
466 | |
477 | |
467 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
478 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
468 | |
479 | |
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492 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
503 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
493 | /* you can call it in either the parent or the child */ |
504 | /* you can call it in either the parent or the child */ |
494 | /* you can actually call it at any time, anywhere :) */ |
505 | /* you can actually call it at any time, anywhere :) */ |
495 | void ev_default_fork (void); |
506 | void ev_default_fork (void); |
496 | |
507 | |
497 | #if 0 |
508 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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509 | |
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510 | void ev_now_update (EV_P); /* update event loop time */ |
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511 | |
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512 | #if EV_WALK_ENABLE |
498 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
513 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
499 | /* callback on every such watcher. The callback might stop the watcher, */ |
514 | /* callback on every such watcher. The callback might stop the watcher, */ |
500 | /* but do nothing else with the loop */ |
515 | /* but do nothing else with the loop */ |
501 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
516 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
502 | #endif |
517 | #endif |
503 | |
518 | |
504 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
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505 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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506 | #endif /* prototypes */ |
519 | #endif /* prototypes */ |
507 | |
520 | |
508 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
521 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
509 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
522 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
510 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
523 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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513 | |
526 | |
514 | #if EV_PROTOTYPES |
527 | #if EV_PROTOTYPES |
515 | void ev_loop (EV_P_ int flags); |
528 | void ev_loop (EV_P_ int flags); |
516 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
529 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
517 | |
530 | |
518 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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519 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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520 | |
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521 | /* |
531 | /* |
522 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
532 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
523 | * keeps one reference. if you have a long-runing watcher you never unregister that |
533 | * keeps one reference. if you have a long-running watcher you never unregister that |
524 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
534 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
525 | */ |
535 | */ |
526 | void ev_ref (EV_P); |
536 | void ev_ref (EV_P); |
527 | void ev_unref (EV_P); |
537 | void ev_unref (EV_P); |
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538 | |
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539 | /* |
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540 | * convenience function, wait for a single event, without registering an event watcher |
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541 | * if timeout is < 0, do wait indefinitely |
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542 | */ |
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543 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
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544 | |
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545 | # if EV_MINIMAL < 2 |
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546 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
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547 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
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548 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
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549 | |
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550 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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551 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
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552 | |
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553 | /* advanced stuff for threading etc. support, see docs */ |
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554 | void ev_set_userdata (EV_P_ void *data); |
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555 | void *ev_userdata (EV_P); |
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556 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
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557 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
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558 | |
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559 | unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
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560 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
528 | |
561 | |
529 | /* |
562 | /* |
530 | * stop/start the timer handling. |
563 | * stop/start the timer handling. |
531 | */ |
564 | */ |
532 | void ev_suspend (EV_P); |
565 | void ev_suspend (EV_P); |
533 | void ev_resume (EV_P); |
566 | void ev_resume (EV_P); |
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567 | #endif |
534 | |
568 | |
535 | /* |
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536 | * convenience function, wait for a single event, without registering an event watcher |
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537 | * if timeout is < 0, do wait indefinitely |
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538 | */ |
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539 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
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540 | #endif |
569 | #endif |
541 | |
570 | |
542 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
571 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
543 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
572 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
544 | #define ev_init(ev,cb_) do { \ |
573 | #define ev_init(ev,cb_) do { \ |
545 | ((ev_watcher *)(void *)(ev))->active = \ |
574 | ((ev_watcher *)(void *)(ev))->active = \ |
546 | ((ev_watcher *)(void *)(ev))->pending = \ |
575 | ((ev_watcher *)(void *)(ev))->pending = 0; \ |
547 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
576 | ev_set_priority ((ev), 0); \ |
548 | ev_set_cb ((ev), cb_); \ |
577 | ev_set_cb ((ev), cb_); \ |
549 | } while (0) |
578 | } while (0) |
550 | |
579 | |
551 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
580 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
552 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
581 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
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575 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
604 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
576 | |
605 | |
577 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
606 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
578 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
607 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
579 | |
608 | |
580 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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581 | #define ev_cb(ev) (ev)->cb /* rw */ |
609 | #define ev_cb(ev) (ev)->cb /* rw */ |
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610 | |
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611 | #if EV_MINPRI == EV_MAXPRI |
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612 | # define ev_priority(ev) ((ev), EV_MINPRI) |
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613 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
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614 | #else |
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615 | # define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
582 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
616 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
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617 | #endif |
583 | |
618 | |
584 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
619 | #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.) |
585 | |
620 | |
586 | #ifndef ev_set_cb |
621 | #ifndef ev_set_cb |
587 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
622 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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604 | |
639 | |
605 | void ev_timer_start (EV_P_ ev_timer *w); |
640 | void ev_timer_start (EV_P_ ev_timer *w); |
606 | void ev_timer_stop (EV_P_ ev_timer *w); |
641 | void ev_timer_stop (EV_P_ ev_timer *w); |
607 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
642 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
608 | void ev_timer_again (EV_P_ ev_timer *w); |
643 | void ev_timer_again (EV_P_ ev_timer *w); |
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644 | /* return remaining time */ |
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645 | ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); |
609 | |
646 | |
610 | #if EV_PERIODIC_ENABLE |
647 | #if EV_PERIODIC_ENABLE |
611 | void ev_periodic_start (EV_P_ ev_periodic *w); |
648 | void ev_periodic_start (EV_P_ ev_periodic *w); |
612 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
649 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
613 | void ev_periodic_again (EV_P_ ev_periodic *w); |
650 | void ev_periodic_again (EV_P_ ev_periodic *w); |