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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 |
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44 | # define EV_CPP(x) x |
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45 | #else |
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46 | # define EV_CPP(x) |
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47 | #endif |
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48 | |
44 | extern "C" { |
49 | EV_CPP(extern "C" {) |
45 | #endif |
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46 | |
50 | |
47 | /*****************************************************************************/ |
51 | /*****************************************************************************/ |
48 | |
52 | |
49 | /* pre-4.0 compatibility */ |
53 | /* pre-4.0 compatibility */ |
50 | #ifndef EV_COMPAT3 |
54 | #ifndef EV_COMPAT3 |
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145 | # include <sys/types.h> |
149 | # include <sys/types.h> |
146 | # endif |
150 | # endif |
147 | # include <sys/stat.h> |
151 | # include <sys/stat.h> |
148 | #endif |
152 | #endif |
149 | |
153 | |
150 | #ifdef __cplusplus |
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151 | # define EV_DEFARG(x) = x |
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152 | #else |
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153 | # define EV_DEFARG(x) |
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154 | #endif |
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155 | |
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156 | /* support multiple event loops? */ |
154 | /* support multiple event loops? */ |
157 | #if EV_MULTIPLICITY |
155 | #if EV_MULTIPLICITY |
158 | struct ev_loop; |
156 | struct ev_loop; |
159 | # define EV_P struct ev_loop *loop |
157 | # define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */ |
160 | # define EV_P_ EV_P, |
158 | # define EV_P_ EV_P, /* a loop as first of multiple parameters */ |
161 | # define EV_A loop |
159 | # define EV_A loop /* a loop as sole argument to a function call */ |
162 | # define EV_A_ EV_A, |
160 | # define EV_A_ EV_A, /* a loop as first of multiple arguments */ |
163 | # define EV_DEFAULT_UC ev_default_loop_uc () |
161 | # define EV_DEFAULT_UC ev_default_loop_uc () /* the default loop, if initialised, as sole arg */ |
164 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
162 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ |
165 | # define EV_DEFAULT ev_default_loop (0) |
163 | # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ |
166 | # define EV_DEFAULT_ EV_DEFAULT, |
164 | # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ |
167 | # define EV_PDEF EV_P EV_DEFARG (EV_DEFAULT_UC) |
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168 | #else |
165 | #else |
169 | # define EV_P void |
166 | # define EV_P void |
170 | # define EV_P_ |
167 | # define EV_P_ |
171 | # define EV_A |
168 | # define EV_A |
172 | # define EV_A_ |
169 | # define EV_A_ |
173 | # define EV_DEFAULT |
170 | # define EV_DEFAULT |
174 | # define EV_DEFAULT_ |
171 | # define EV_DEFAULT_ |
175 | # define EV_DEFAULT_UC |
172 | # define EV_DEFAULT_UC |
176 | # define EV_DEFAULT_UC_ |
173 | # define EV_DEFAULT_UC_ |
177 | # define EV_PDEF EV_P |
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178 | # undef EV_EMBED_ENABLE |
174 | # undef EV_EMBED_ENABLE |
179 | #endif |
175 | #endif |
180 | |
176 | |
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177 | /* EV_INLINE is used for functions in header files */ |
181 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
178 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
182 | # define EV_INLINE static inline |
179 | # define EV_INLINE static inline |
183 | #else |
180 | #else |
184 | # define EV_INLINE static |
181 | # define EV_INLINE static |
185 | #endif |
182 | #endif |
186 | |
183 | |
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184 | /* EV_PROTOTYPES can be sued to switch of prototype declarations */ |
187 | #ifndef EV_PROTOTYPES |
185 | #ifndef EV_PROTOTYPES |
188 | # define EV_PROTOTYPES 1 |
186 | # define EV_PROTOTYPES 1 |
189 | #endif |
187 | #endif |
190 | |
188 | |
191 | /*****************************************************************************/ |
189 | /*****************************************************************************/ |
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510 | * (such as failed select, poll, epoll_wait) |
508 | * (such as failed select, poll, epoll_wait) |
511 | */ |
509 | */ |
512 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
510 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
513 | |
511 | |
514 | #if EV_MULTIPLICITY |
512 | #if EV_MULTIPLICITY |
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513 | |
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514 | /* the default loop is the only one that handles signals and child watchers */ |
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515 | /* you can call this as often as you like */ |
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516 | struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)); |
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517 | |
515 | EV_INLINE struct ev_loop * |
518 | EV_INLINE struct ev_loop * |
516 | ev_default_loop_uc (void) |
519 | ev_default_loop_uc (void) |
517 | { |
520 | { |
518 | extern struct ev_loop *ev_default_loop_ptr; |
521 | extern struct ev_loop *ev_default_loop_ptr; |
519 | |
522 | |
520 | return ev_default_loop_ptr; |
523 | return ev_default_loop_ptr; |
521 | } |
524 | } |
522 | |
525 | |
523 | /* the default loop is the only one that handles signals and child watchers */ |
526 | EV_INLINE int |
524 | /* you can call this as often as you like */ |
527 | ev_is_default_loop (EV_P) |
525 | EV_INLINE struct ev_loop * |
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526 | ev_default_loop (unsigned int flags EV_DEFARG (0)) |
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527 | { |
528 | { |
528 | struct ev_loop *loop = ev_default_loop_uc (); |
529 | return EV_A == ev_default_loop_uc (); |
529 | |
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530 | if (!loop) |
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531 | { |
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532 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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533 | |
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534 | loop = ev_default_loop_init (flags); |
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535 | } |
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536 | |
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537 | return loop; |
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538 | } |
530 | } |
539 | |
531 | |
540 | /* create and destroy alternative loops that don't handle signals */ |
532 | /* create and destroy alternative loops that don't handle signals */ |
541 | struct ev_loop *ev_loop_new (unsigned int flags EV_DEFARG (0)); |
533 | struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)); |
542 | void ev_loop_destroy (EV_PDEF); |
534 | void ev_loop_destroy (EV_P); |
543 | void ev_loop_fork (EV_PDEF); |
535 | void ev_loop_fork (EV_P); |
544 | |
536 | |
545 | ev_tstamp ev_now (EV_PDEF); /* time w.r.t. timers and the eventloop, updated after each poll */ |
537 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
546 | |
538 | |
547 | #else |
539 | #else |
548 | |
540 | |
549 | int ev_default_loop (unsigned int flags EV_DEFARG (0)); /* returns true when successful */ |
541 | int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */ |
550 | |
542 | |
551 | EV_INLINE ev_tstamp |
543 | EV_INLINE ev_tstamp |
552 | ev_now (void) |
544 | ev_now (void) |
553 | { |
545 | { |
554 | extern ev_tstamp ev_rt_now; |
546 | extern ev_tstamp ev_rt_now; |
555 | |
547 | |
556 | return ev_rt_now; |
548 | return ev_rt_now; |
557 | } |
549 | } |
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550 | |
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551 | /* looks weird, but ev_is_default_loop (EV_A) still works if this exists */ |
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552 | EV_INLINE int |
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553 | ev_is_default_loop (void) |
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554 | { |
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555 | return 1; |
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556 | } |
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557 | |
558 | #endif /* multiplicity */ |
558 | #endif /* multiplicity */ |
559 | |
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560 | EV_INLINE int |
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561 | ev_is_default_loop (EV_PDEF) |
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562 | { |
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563 | #if EV_MULTIPLICITY |
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564 | extern struct ev_loop *ev_default_loop_ptr; |
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565 | |
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566 | return !!(EV_A == ev_default_loop_ptr); |
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567 | #else |
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568 | return 1; |
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569 | #endif |
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570 | } |
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571 | |
559 | |
572 | void ev_default_destroy (void); /* destroy the default loop */ |
560 | void ev_default_destroy (void); /* destroy the default loop */ |
573 | /* this needs to be called after fork, to duplicate the default loop */ |
561 | /* this needs to be called after fork, to duplicate the default loop */ |
574 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
562 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
575 | /* you can call it in either the parent or the child */ |
563 | /* you can call it in either the parent or the child */ |
576 | /* you can actually call it at any time, anywhere :) */ |
564 | /* you can actually call it at any time, anywhere :) */ |
577 | void ev_default_fork (void); |
565 | void ev_default_fork (void); |
578 | |
566 | |
579 | unsigned int ev_backend (EV_PDEF); /* backend in use by loop */ |
567 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
580 | |
568 | |
581 | void ev_now_update (EV_PDEF); /* update event loop time */ |
569 | void ev_now_update (EV_P); /* update event loop time */ |
582 | |
570 | |
583 | #if EV_WALK_ENABLE |
571 | #if EV_WALK_ENABLE |
584 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
572 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
585 | /* callback on every such watcher. The callback might stop the watcher, */ |
573 | /* callback on every such watcher. The callback might stop the watcher, */ |
586 | /* but do nothing else with the loop */ |
574 | /* but do nothing else with the loop */ |
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601 | EVBREAK_ONE = 1, /* unloop once */ |
589 | EVBREAK_ONE = 1, /* unloop once */ |
602 | EVBREAK_ALL = 2 /* unloop all loops */ |
590 | EVBREAK_ALL = 2 /* unloop all loops */ |
603 | }; |
591 | }; |
604 | |
592 | |
605 | #if EV_PROTOTYPES |
593 | #if EV_PROTOTYPES |
606 | void ev_run (EV_P_ int flags EV_DEFARG (0)); |
594 | void ev_run (EV_P_ int flags EV_CPP (= 0)); |
607 | void ev_break (EV_P_ int how EV_DEFARG (EVBREAK_ONE)); /* break out of the loop */ |
595 | void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */ |
608 | |
596 | |
609 | /* |
597 | /* |
610 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
598 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
611 | * keeps one reference. if you have a long-running watcher you never unregister that |
599 | * keeps one reference. if you have a long-running watcher you never unregister that |
612 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
600 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
613 | */ |
601 | */ |
614 | void ev_ref (EV_PDEF); |
602 | void ev_ref (EV_P); |
615 | void ev_unref (EV_PDEF); |
603 | void ev_unref (EV_P); |
616 | |
604 | |
617 | /* |
605 | /* |
618 | * convenience function, wait for a single event, without registering an event watcher |
606 | * convenience function, wait for a single event, without registering an event watcher |
619 | * if timeout is < 0, do wait indefinitely |
607 | * if timeout is < 0, do wait indefinitely |
620 | */ |
608 | */ |
621 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
609 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
622 | |
610 | |
623 | # if EV_FEATURE_API |
611 | # if EV_FEATURE_API |
624 | unsigned int ev_iteration (EV_PDEF); /* number of loop iterations */ |
612 | unsigned int ev_iteration (EV_P); /* number of loop iterations */ |
625 | unsigned int ev_depth (EV_PDEF); /* #ev_loop enters - #ev_loop leaves */ |
613 | unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
626 | void ev_verify (EV_PDEF); /* abort if loop data corrupted */ |
614 | void ev_verify (EV_P); /* abort if loop data corrupted */ |
627 | |
615 | |
628 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
616 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
629 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
617 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
630 | |
618 | |
631 | /* advanced stuff for threading etc. support, see docs */ |
619 | /* advanced stuff for threading etc. support, see docs */ |
632 | void ev_set_userdata (EV_P_ void *data); |
620 | void ev_set_userdata (EV_P_ void *data); |
633 | void *ev_userdata (EV_PDEF); |
621 | void *ev_userdata (EV_P); |
634 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
622 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
635 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
623 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
636 | |
624 | |
637 | unsigned int ev_pending_count (EV_PDEF); /* number of pending events, if any */ |
625 | unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
638 | void ev_invoke_pending (EV_PDEF); /* invoke all pending watchers */ |
626 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
639 | |
627 | |
640 | /* |
628 | /* |
641 | * stop/start the timer handling. |
629 | * stop/start the timer handling. |
642 | */ |
630 | */ |
643 | void ev_suspend (EV_PDEF); |
631 | void ev_suspend (EV_P); |
644 | void ev_resume (EV_PDEF); |
632 | void ev_resume (EV_P); |
645 | #endif |
633 | #endif |
646 | |
634 | |
647 | #endif |
635 | #endif |
648 | |
636 | |
649 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
637 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
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800 | typedef struct ev_loop ev_loop; |
788 | typedef struct ev_loop ev_loop; |
801 | #endif |
789 | #endif |
802 | |
790 | |
803 | #endif |
791 | #endif |
804 | |
792 | |
805 | #ifdef __cplusplus |
793 | EV_CPP(}) |
806 | } |
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807 | #endif |
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808 | |
794 | |
809 | #endif |
795 | #endif |
810 | |
796 | |