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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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143 | # ifdef _WIN32 |
147 | # ifdef _WIN32 |
144 | # include <time.h> |
148 | # include <time.h> |
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 |
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149 | |
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150 | /* in C++ we can use this to provide default arguments */ |
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151 | #ifdef __cplusplus |
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152 | # define EV_DEFARG(x) = x |
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153 | #else |
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154 | # define EV_DEFARG(x) |
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155 | #endif |
152 | #endif |
156 | |
153 | |
157 | /* support multiple event loops? */ |
154 | /* support multiple event loops? */ |
158 | #if EV_MULTIPLICITY |
155 | #if EV_MULTIPLICITY |
159 | struct ev_loop; |
156 | struct ev_loop; |
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163 | # define EV_A_ EV_A, /* a loop as first of multiple arguments */ |
160 | # define EV_A_ EV_A, /* a loop as first of multiple arguments */ |
164 | # define EV_DEFAULT_UC ev_default_loop_uc () /* the default loop, if initialised, as sole arg */ |
161 | # define EV_DEFAULT_UC ev_default_loop_uc () /* the default loop, if initialised, as sole arg */ |
165 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ |
162 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ |
166 | # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ |
163 | # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ |
167 | # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ |
164 | # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ |
168 | # define EV_PDEF EV_P EV_DEFARG (EV_DEFAULT_UC) /* EV_P, but with default argument in C++ */ |
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169 | # define EV_PDEF_ EV_P EV_DEFARG (EV_DEFAULT_UC), /* EV_P_, but with default argument in C++ */ |
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170 | #else |
165 | #else |
171 | # define EV_P void |
166 | # define EV_P void |
172 | # define EV_P_ |
167 | # define EV_P_ |
173 | # define EV_A |
168 | # define EV_A |
174 | # define EV_A_ |
169 | # define EV_A_ |
175 | # define EV_DEFAULT |
170 | # define EV_DEFAULT |
176 | # define EV_DEFAULT_ |
171 | # define EV_DEFAULT_ |
177 | # define EV_DEFAULT_UC |
172 | # define EV_DEFAULT_UC |
178 | # define EV_DEFAULT_UC_ |
173 | # define EV_DEFAULT_UC_ |
179 | # define EV_PDEF EV_P |
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180 | # define EV_PDEF_ EV_P_ |
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181 | # undef EV_EMBED_ENABLE |
174 | # undef EV_EMBED_ENABLE |
182 | #endif |
175 | #endif |
183 | |
176 | |
184 | /* EV_INLINE is used for functions in header files */ |
177 | /* EV_INLINE is used for functions in header files */ |
185 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
178 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
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515 | * (such as failed select, poll, epoll_wait) |
508 | * (such as failed select, poll, epoll_wait) |
516 | */ |
509 | */ |
517 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
510 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
518 | |
511 | |
519 | #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 | |
520 | EV_INLINE struct ev_loop * |
518 | EV_INLINE struct ev_loop * |
521 | ev_default_loop_uc (void) |
519 | ev_default_loop_uc (void) |
522 | { |
520 | { |
523 | extern struct ev_loop *ev_default_loop_ptr; |
521 | extern struct ev_loop *ev_default_loop_ptr; |
524 | |
522 | |
525 | return ev_default_loop_ptr; |
523 | return ev_default_loop_ptr; |
526 | } |
524 | } |
527 | |
525 | |
528 | /* the default loop is the only one that handles signals and child watchers */ |
526 | EV_INLINE int |
529 | /* you can call this as often as you like */ |
527 | ev_is_default_loop (EV_P) |
530 | EV_INLINE struct ev_loop * |
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531 | ev_default_loop (unsigned int flags EV_DEFARG (0)) |
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532 | { |
528 | { |
533 | struct ev_loop *loop = ev_default_loop_uc (); |
529 | return EV_A == ev_default_loop_uc (); |
534 | |
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535 | if (!loop) |
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536 | { |
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537 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
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538 | |
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539 | loop = ev_default_loop_init (flags); |
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540 | } |
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541 | |
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542 | return loop; |
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543 | } |
530 | } |
544 | |
531 | |
545 | /* create and destroy alternative loops that don't handle signals */ |
532 | /* create and destroy alternative loops that don't handle signals */ |
546 | 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)); |
547 | void ev_loop_destroy (EV_PDEF); |
534 | void ev_loop_destroy (EV_P); |
548 | void ev_loop_fork (EV_PDEF); |
535 | void ev_loop_fork (EV_P); |
549 | |
536 | |
550 | 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 */ |
551 | |
538 | |
552 | #else |
539 | #else |
553 | |
540 | |
554 | 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 */ |
555 | |
542 | |
556 | EV_INLINE ev_tstamp |
543 | EV_INLINE ev_tstamp |
557 | ev_now (void) |
544 | ev_now (void) |
558 | { |
545 | { |
559 | extern ev_tstamp ev_rt_now; |
546 | extern ev_tstamp ev_rt_now; |
560 | |
547 | |
561 | return ev_rt_now; |
548 | return ev_rt_now; |
562 | } |
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 | |
563 | #endif /* multiplicity */ |
558 | #endif /* multiplicity */ |
564 | |
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565 | EV_INLINE int |
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566 | ev_is_default_loop (EV_PDEF) |
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567 | { |
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568 | #if EV_MULTIPLICITY |
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569 | extern struct ev_loop *ev_default_loop_ptr; |
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570 | |
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571 | return !!(EV_A == ev_default_loop_ptr); |
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572 | #else |
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573 | return 1; |
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574 | #endif |
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575 | } |
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576 | |
559 | |
577 | void ev_default_destroy (void); /* destroy the default loop */ |
560 | void ev_default_destroy (void); /* destroy the default loop */ |
578 | /* 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 */ |
579 | /* 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 */ |
580 | /* you can call it in either the parent or the child */ |
563 | /* you can call it in either the parent or the child */ |
581 | /* you can actually call it at any time, anywhere :) */ |
564 | /* you can actually call it at any time, anywhere :) */ |
582 | void ev_default_fork (void); |
565 | void ev_default_fork (void); |
583 | |
566 | |
584 | unsigned int ev_backend (EV_PDEF); /* backend in use by loop */ |
567 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
585 | |
568 | |
586 | void ev_now_update (EV_PDEF); /* update event loop time */ |
569 | void ev_now_update (EV_P); /* update event loop time */ |
587 | |
570 | |
588 | #if EV_WALK_ENABLE |
571 | #if EV_WALK_ENABLE |
589 | /* 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 */ |
590 | /* callback on every such watcher. The callback might stop the watcher, */ |
573 | /* callback on every such watcher. The callback might stop the watcher, */ |
591 | /* but do nothing else with the loop */ |
574 | /* but do nothing else with the loop */ |
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606 | EVBREAK_ONE = 1, /* unloop once */ |
589 | EVBREAK_ONE = 1, /* unloop once */ |
607 | EVBREAK_ALL = 2 /* unloop all loops */ |
590 | EVBREAK_ALL = 2 /* unloop all loops */ |
608 | }; |
591 | }; |
609 | |
592 | |
610 | #if EV_PROTOTYPES |
593 | #if EV_PROTOTYPES |
611 | void ev_run (EV_PDEF_ int flags EV_DEFARG (0)); |
594 | void ev_run (EV_P_ int flags EV_CPP (= 0)); |
612 | void ev_break (EV_PDEF_ 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 */ |
613 | |
596 | |
614 | /* |
597 | /* |
615 | * 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 |
616 | * 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 |
617 | * 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. |
618 | */ |
601 | */ |
619 | void ev_ref (EV_PDEF); |
602 | void ev_ref (EV_P); |
620 | void ev_unref (EV_PDEF); |
603 | void ev_unref (EV_P); |
621 | |
604 | |
622 | /* |
605 | /* |
623 | * 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 |
624 | * if timeout is < 0, do wait indefinitely |
607 | * if timeout is < 0, do wait indefinitely |
625 | */ |
608 | */ |
626 | 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); |
627 | |
610 | |
628 | # if EV_FEATURE_API |
611 | # if EV_FEATURE_API |
629 | unsigned int ev_iteration (EV_PDEF); /* number of loop iterations */ |
612 | unsigned int ev_iteration (EV_P); /* number of loop iterations */ |
630 | 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 */ |
631 | void ev_verify (EV_PDEF); /* abort if loop data corrupted */ |
614 | void ev_verify (EV_P); /* abort if loop data corrupted */ |
632 | |
615 | |
633 | 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 */ |
634 | 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 */ |
635 | |
618 | |
636 | /* advanced stuff for threading etc. support, see docs */ |
619 | /* advanced stuff for threading etc. support, see docs */ |
637 | void ev_set_userdata (EV_P_ void *data); |
620 | void ev_set_userdata (EV_P_ void *data); |
638 | void *ev_userdata (EV_PDEF); |
621 | void *ev_userdata (EV_P); |
639 | 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)); |
640 | 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)); |
641 | |
624 | |
642 | 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 */ |
643 | void ev_invoke_pending (EV_PDEF); /* invoke all pending watchers */ |
626 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
644 | |
627 | |
645 | /* |
628 | /* |
646 | * stop/start the timer handling. |
629 | * stop/start the timer handling. |
647 | */ |
630 | */ |
648 | void ev_suspend (EV_PDEF); |
631 | void ev_suspend (EV_P); |
649 | void ev_resume (EV_PDEF); |
632 | void ev_resume (EV_P); |
650 | #endif |
633 | #endif |
651 | |
634 | |
652 | #endif |
635 | #endif |
653 | |
636 | |
654 | /* 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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805 | typedef struct ev_loop ev_loop; |
788 | typedef struct ev_loop ev_loop; |
806 | #endif |
789 | #endif |
807 | |
790 | |
808 | #endif |
791 | #endif |
809 | |
792 | |
810 | #ifdef __cplusplus |
793 | EV_CPP(}) |
811 | } |
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812 | #endif |
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813 | |
794 | |
814 | #endif |
795 | #endif |
815 | |
796 | |