2 * libev native API header
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
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
37 * either the BSD or the GPL.
51 /*****************************************************************************/
53 /* pre-4.0 compatibility */
59 # define EV_FEATURES 0x7f
62 #define EV_FEATURE_CODE ((EV_FEATURES) & 1)
63 #define EV_FEATURE_DATA ((EV_FEATURES) & 2)
64 #define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
65 #define EV_FEATURE_API ((EV_FEATURES) & 8)
66 #define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
67 #define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
68 #define EV_FEATURE_OS ((EV_FEATURES) & 64)
70 /* these priorities are inclusive, higher priorities will be invoked earlier */
72 # define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
75 # define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
78 #ifndef EV_MULTIPLICITY
79 # define EV_MULTIPLICITY EV_FEATURE_CONFIG
82 #ifndef EV_PERIODIC_ENABLE
83 # define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
86 #ifndef EV_STAT_ENABLE
87 # define EV_STAT_ENABLE EV_FEATURE_WATCHERS
90 #ifndef EV_PREPARE_ENABLE
91 # define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
94 #ifndef EV_CHECK_ENABLE
95 # define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
98 #ifndef EV_IDLE_ENABLE
99 # define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
102 #ifndef EV_FORK_ENABLE
103 # define EV_FORK_ENABLE 0 /* not implemented */
106 #ifndef EV_CLEANUP_ENABLE
107 # define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
110 #ifndef EV_SIGNAL_ENABLE
111 # define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
114 #ifndef EV_CHILD_ENABLE
116 # define EV_CHILD_ENABLE 0
118 # define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
122 #ifndef EV_ASYNC_ENABLE
123 # define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
126 #ifndef EV_EMBED_ENABLE
127 # define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
130 #ifndef EV_WALK_ENABLE
131 # define EV_WALK_ENABLE 0 /* not yet */
134 /*****************************************************************************/
136 #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
137 # undef EV_SIGNAL_ENABLE
138 # define EV_SIGNAL_ENABLE 1
141 /*****************************************************************************/
143 typedef double ev_tstamp;
147 # define EV_ATOMIC_T sig_atomic_t volatile
153 # include <sys/types.h>
155 # include <sys/stat.h>
158 /* support multiple event loops? */
161 # define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
162 # define EV_P_ EV_P, /* a loop as first of multiple parameters */
163 # define EV_A loop /* a loop as sole argument to a function call */
164 # define EV_A_ EV_A, /* a loop as first of multiple arguments */
165 # define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
166 # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
167 # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
168 # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
176 # define EV_DEFAULT_UC
177 # define EV_DEFAULT_UC_
178 # undef EV_EMBED_ENABLE
181 /* EV_INLINE is used for functions in header files */
182 #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
183 # define EV_INLINE static inline
185 # define EV_INLINE static
188 /* EV_PROTOTYPES can be sued to switch of prototype declarations */
189 #ifndef EV_PROTOTYPES
190 # define EV_PROTOTYPES 1
193 /*****************************************************************************/
195 #define EV_VERSION_MAJOR 4
196 #define EV_VERSION_MINOR 0
198 /* eventmask, revents, events... */
200 EV_UNDEF = -1, /* guaranteed to be invalid */
201 EV_NONE = 0x00, /* no events */
202 EV_READ = 0x01, /* ev_io detected read will not block */
203 EV_WRITE = 0x02, /* ev_io detected write will not block */
204 EV__IOFDSET = 0x80, /* internal use only */
205 EV_IO = EV_READ, /* alias for type-detection */
206 EV_TIMER = 0x00000100, /* timer timed out */
208 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
210 EV_PERIODIC = 0x00000200, /* periodic timer timed out */
211 EV_SIGNAL = 0x00000400, /* signal was received */
212 EV_CHILD = 0x00000800, /* child/pid had status change */
213 EV_STAT = 0x00001000, /* stat data changed */
214 EV_IDLE = 0x00002000, /* event loop is idling */
215 EV_PREPARE = 0x00004000, /* event loop about to poll */
216 EV_CHECK = 0x00008000, /* event loop finished poll */
217 EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
218 EV_FORK = 0x00020000, /* event loop resumed in child */
219 EV_CLEANUP = 0x00040000, /* event loop resumed in child */
220 EV_ASYNC = 0x00080000, /* async intra-loop signal */
221 EV_CUSTOM = 0x01000000, /* for use by user code */
222 EV_ERROR = 0x80000000 /* sent when an error occurs */
225 /* can be used to add custom fields to all watchers, while losing binary compatibility */
227 # define EV_COMMON void *data;
230 #ifndef EV_CB_DECLARE
231 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
234 # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
237 /* not official, do not use */
238 #define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
241 * struct member types:
242 * private: you may look at them, but not change them,
243 * and they might not mean anything to you.
244 * ro: can be read anytime, but only changed when the watcher isn't active.
245 * rw: can be read and modified anytime, even when the watcher is active.
247 * some internal details that might be helpful for debugging:
249 * active is either 0, which means the watcher is not active,
250 * or the array index of the watcher (periodics, timers)
251 * or the array index + 1 (most other watchers)
252 * or simply 1 for watchers that aren't in some array.
253 * pending is either 0, in which case the watcher isn't,
254 * or the array index + 1 in the pendings array.
257 #if EV_MINPRI == EV_MAXPRI
258 # define EV_DECL_PRIORITY
259 #elif !defined (EV_DECL_PRIORITY)
260 # define EV_DECL_PRIORITY int priority;
263 /* shared by all watchers */
264 #define EV_WATCHER(type) \
265 int active; /* private */ \
266 int pending; /* private */ \
267 EV_DECL_PRIORITY /* private */ \
269 EV_CB_DECLARE (type) /* private */
271 #define EV_WATCHER_LIST(type) \
273 struct ev_watcher_list *next; /* private */
275 #define EV_WATCHER_TIME(type) \
277 ev_tstamp at; /* private */
279 /* base class, nothing to see here unless you subclass */
280 typedef struct ev_watcher
282 EV_WATCHER (ev_watcher)
285 /* base class, nothing to see here unless you subclass */
286 typedef struct ev_watcher_list
288 EV_WATCHER_LIST (ev_watcher_list)
291 /* base class, nothing to see here unless you subclass */
292 typedef struct ev_watcher_time
294 EV_WATCHER_TIME (ev_watcher_time)
297 /* invoked when fd is either EV_READable or EV_WRITEable */
298 /* revent EV_READ, EV_WRITE */
301 EV_WATCHER_LIST (ev_io)
307 /* invoked after a specific time, repeatable (based on monotonic clock) */
308 /* revent EV_TIMEOUT */
309 typedef struct ev_timer
311 EV_WATCHER_TIME (ev_timer)
313 ev_tstamp repeat; /* rw */
316 /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
317 /* revent EV_PERIODIC */
318 typedef struct ev_periodic
320 EV_WATCHER_TIME (ev_periodic)
322 ev_tstamp offset; /* rw */
323 ev_tstamp interval; /* rw */
324 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
327 /* invoked when the given signal has been received */
328 /* revent EV_SIGNAL */
329 typedef struct ev_signal
331 EV_WATCHER_LIST (ev_signal)
336 /* invoked when sigchld is received and waitpid indicates the given pid */
337 /* revent EV_CHILD */
338 /* does not support priorities */
339 typedef struct ev_child
341 EV_WATCHER_LIST (ev_child)
343 int flags; /* private */
345 int rpid; /* rw, holds the received pid */
346 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
350 /* st_nlink = 0 means missing file or other error */
352 typedef struct _stati64 ev_statdata;
354 typedef struct stat ev_statdata;
357 /* invoked each time the stat data changes for a given path */
359 typedef struct ev_stat
361 EV_WATCHER_LIST (ev_stat)
363 ev_timer timer; /* private */
364 ev_tstamp interval; /* ro */
365 const char *path; /* ro */
366 ev_statdata prev; /* ro */
367 ev_statdata attr; /* ro */
369 int wd; /* wd for inotify, fd for kqueue */
374 /* invoked when the nothing else needs to be done, keeps the process from blocking */
376 typedef struct ev_idle
382 /* invoked for each run of the mainloop, just before the blocking call */
383 /* you can still change events in any way you like */
384 /* revent EV_PREPARE */
385 typedef struct ev_prepare
387 EV_WATCHER (ev_prepare)
390 /* invoked for each run of the mainloop, just after the blocking call */
391 /* revent EV_CHECK */
392 typedef struct ev_check
394 EV_WATCHER (ev_check)
398 /* the callback gets invoked before check in the child process when a fork was detected */
400 typedef struct ev_fork
406 #if EV_CLEANUP_ENABLE
407 /* is invoked just before the loop gets destroyed */
408 /* revent EV_CLEANUP */
409 typedef struct ev_cleanup
411 EV_WATCHER (ev_cleanup)
416 /* used to embed an event loop inside another */
417 /* the callback gets invoked when the event loop has handled events, and can be 0 */
418 typedef struct ev_embed
420 EV_WATCHER (ev_embed)
422 struct ev_loop *other; /* ro */
423 ev_io io; /* private */
424 ev_prepare prepare; /* private */
425 ev_check check; /* unused */
426 ev_timer timer; /* unused */
427 ev_periodic periodic; /* unused */
428 ev_idle idle; /* unused */
429 ev_fork fork; /* private */
430 ev_cleanup cleanup; /* unused */
435 /* invoked when somebody calls ev_async_send on the watcher */
436 /* revent EV_ASYNC */
437 typedef struct ev_async
439 EV_WATCHER (ev_async)
441 EV_ATOMIC_T sent; /* private */
444 # define ev_async_pending(w) (+(w)->sent)
447 /* the presence of this union forces similar struct layout */
451 struct ev_watcher_list wl;
454 struct ev_timer timer;
455 struct ev_periodic periodic;
456 struct ev_signal signal;
457 struct ev_child child;
464 struct ev_prepare prepare;
465 struct ev_check check;
469 #if EV_CLEANUP_ENABLE
470 struct ev_cleanup cleanup;
473 struct ev_embed embed;
476 struct ev_async async;
480 /* flag bits for ev_default_loop and ev_loop_new */
483 EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
485 EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
486 EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
487 /* debugging/feature disable */
488 EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
490 EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
492 EVFLAG_SIGNALFD = 0x00200000U /* attempt to use signalfd */
495 /* method bits to be ored together */
497 EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
498 EVBACKEND_POLL = 0x00000002U, /* !win */
499 EVBACKEND_EPOLL = 0x00000004U, /* linux */
500 EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
501 EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
502 EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
503 EVBACKEND_ALL = 0x0000003FU
507 int ev_version_major (void);
508 int ev_version_minor (void);
510 unsigned int ev_supported_backends (void);
511 unsigned int ev_recommended_backends (void);
512 unsigned int ev_embeddable_backends (void);
514 ev_tstamp ev_time (void);
515 void ev_sleep (ev_tstamp delay); /* sleep for a while */
517 /* Sets the allocation function to use, works like realloc.
518 * It is used to allocate and free memory.
519 * If it returns zero when memory needs to be allocated, the library might abort
520 * or take some potentially destructive action.
521 * The default is your system realloc function.
523 void ev_set_allocator (void *(*cb)(void *ptr, long size));
525 /* set the callback function to call on a
526 * retryable syscall error
527 * (such as failed select, poll, epoll_wait)
529 void ev_set_syserr_cb (void (*cb)(const char *msg));
533 /* the default loop is the only one that handles signals and child watchers */
534 /* you can call this as often as you like */
535 struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0));
537 EV_INLINE struct ev_loop *
538 ev_default_loop_uc_ (void)
540 extern struct ev_loop *ev_default_loop_ptr;
542 return ev_default_loop_ptr;
546 ev_is_default_loop (EV_P)
548 return EV_A == EV_DEFAULT_UC;
551 /* create and destroy alternative loops that don't handle signals */
552 struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0));
553 /* destroy event loops, also works for the default loop */
554 void ev_loop_destroy (EV_P);
556 ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
560 int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */
565 extern ev_tstamp ev_rt_now;
570 /* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
572 ev_is_default_loop (void)
577 #endif /* multiplicity */
579 /* this needs to be called after fork, to duplicate the loop */
580 /* when you want to re-use it in the child */
581 /* you can call it in either the parent or the child */
582 /* you can actually call it at any time, anywhere :) */
583 void ev_loop_fork (EV_P);
585 unsigned int ev_backend (EV_P); /* backend in use by loop */
587 void ev_now_update (EV_P); /* update event loop time */
590 /* walk (almost) all watchers in the loop of a given type, invoking the */
591 /* callback on every such watcher. The callback might stop the watcher, */
592 /* but do nothing else with the loop */
593 void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
596 #endif /* prototypes */
598 /* ev_run flags values */
600 EVRUN_NOWAIT = 1, /* do not block/wait */
601 EVRUN_ONCE = 2 /* block *once* only */
604 /* ev_break how values */
606 EVBREAK_CANCEL = 0, /* undo unloop */
607 EVBREAK_ONE = 1, /* unloop once */
608 EVBREAK_ALL = 2 /* unloop all loops */
612 void ev_run (EV_P_ int flags EV_CPP (= 0));
613 void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */
616 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
617 * keeps one reference. if you have a long-running watcher you never unregister that
618 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
621 void ev_unref (EV_P);
624 * convenience function, wait for a single event, without registering an event watcher
625 * if timeout is < 0, do wait indefinitely
627 void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
630 unsigned int ev_iteration (EV_P); /* number of loop iterations */
631 unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */
632 void ev_verify (EV_P); /* abort if loop data corrupted */
634 void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
635 void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
637 /* advanced stuff for threading etc. support, see docs */
638 void ev_set_userdata (EV_P_ void *data);
639 void *ev_userdata (EV_P);
640 void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P));
641 void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P));
643 unsigned int ev_pending_count (EV_P); /* number of pending events, if any */
644 void ev_invoke_pending (EV_P); /* invoke all pending watchers */
647 * stop/start the timer handling.
649 void ev_suspend (EV_P);
650 void ev_resume (EV_P);
655 /* these may evaluate ev multiple times, and the other arguments at most once */
656 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
657 #define ev_init(ev,cb_) do { \
658 ((ev_watcher *)(void *)(ev))->active = \
659 ((ev_watcher *)(void *)(ev))->pending = 0; \
660 ev_set_priority ((ev), 0); \
661 ev_set_cb ((ev), cb_); \
664 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
665 #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
666 #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
667 #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
668 #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
669 #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
670 #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
671 #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
672 #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
673 #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
674 #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
675 #define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
676 #define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
678 #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
679 #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
680 #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
681 #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
682 #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
683 #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
684 #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
685 #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
686 #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
687 #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
688 #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
689 #define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
690 #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
692 #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
693 #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
695 #define ev_cb(ev) (ev)->cb /* rw */
697 #if EV_MINPRI == EV_MAXPRI
698 # define ev_priority(ev) ((ev), EV_MINPRI)
699 # define ev_set_priority(ev,pri) ((ev), (pri))
701 # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
702 # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
705 #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
708 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
711 /* stopping (enabling, adding) a watcher does nothing if it is already running */
712 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
715 /* feeds an event into a watcher as if the event actually occured */
716 /* accepts any ev_watcher type */
717 void ev_feed_event (EV_P_ void *w, int revents);
718 void ev_feed_fd_event (EV_P_ int fd, int revents);
720 void ev_feed_signal_event (EV_P_ int signum);
722 void ev_invoke (EV_P_ void *w, int revents);
723 int ev_clear_pending (EV_P_ void *w);
725 void ev_io_start (EV_P_ ev_io *w);
726 void ev_io_stop (EV_P_ ev_io *w);
728 void ev_timer_start (EV_P_ ev_timer *w);
729 void ev_timer_stop (EV_P_ ev_timer *w);
730 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
731 void ev_timer_again (EV_P_ ev_timer *w);
732 /* return remaining time */
733 ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w);
735 #if EV_PERIODIC_ENABLE
736 void ev_periodic_start (EV_P_ ev_periodic *w);
737 void ev_periodic_stop (EV_P_ ev_periodic *w);
738 void ev_periodic_again (EV_P_ ev_periodic *w);
741 /* only supported in the default loop */
743 void ev_signal_start (EV_P_ ev_signal *w);
744 void ev_signal_stop (EV_P_ ev_signal *w);
747 /* only supported in the default loop */
749 void ev_child_start (EV_P_ ev_child *w);
750 void ev_child_stop (EV_P_ ev_child *w);
754 void ev_stat_start (EV_P_ ev_stat *w);
755 void ev_stat_stop (EV_P_ ev_stat *w);
756 void ev_stat_stat (EV_P_ ev_stat *w);
760 void ev_idle_start (EV_P_ ev_idle *w);
761 void ev_idle_stop (EV_P_ ev_idle *w);
764 #if EV_PREPARE_ENABLE
765 void ev_prepare_start (EV_P_ ev_prepare *w);
766 void ev_prepare_stop (EV_P_ ev_prepare *w);
770 void ev_check_start (EV_P_ ev_check *w);
771 void ev_check_stop (EV_P_ ev_check *w);
775 void ev_fork_start (EV_P_ ev_fork *w);
776 void ev_fork_stop (EV_P_ ev_fork *w);
779 # if EV_CLEANUP_ENABLE
780 void ev_cleanup_start (EV_P_ ev_cleanup *w);
781 void ev_cleanup_stop (EV_P_ ev_cleanup *w);
785 /* only supported when loop to be embedded is in fact embeddable */
786 void ev_embed_start (EV_P_ ev_embed *w);
787 void ev_embed_stop (EV_P_ ev_embed *w);
788 void ev_embed_sweep (EV_P_ ev_embed *w);
792 void ev_async_start (EV_P_ ev_async *w);
793 void ev_async_stop (EV_P_ ev_async *w);
794 void ev_async_send (EV_P_ ev_async *w);
798 #define EVLOOP_NONBLOCK EVRUN_NOWAIT
799 #define EVLOOP_ONESHOT EVRUN_ONCE
800 #define EVUNLOOP_CANCEL EVBREAK_CANCEL
801 #define EVUNLOOP_ONE EVBREAK_ONE
802 #define EVUNLOOP_ALL EVBREAK_ALL
804 EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
805 EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
806 EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
807 EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
809 EV_INLINE void ev_loop_count (EV_P) { ev_iteration (EV_A); }
810 EV_INLINE void ev_loop_depth (EV_P) { ev_depth (EV_A); }
811 EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
815 typedef struct ev_loop ev_loop;