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Revision: 1.115
Committed: Sat Apr 25 14:12:48 2009 UTC (15 years, 3 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: rel-3_6
Changes since 1.114: +5 -1 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 /*
2 * libev native API header
3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
27 *
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.
38 */
39
40 #ifndef EV_H__
41 #define EV_H__
42
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46
47 typedef double ev_tstamp;
48
49 /* these priorities are inclusive, higher priorities will be called earlier */
50 #ifndef EV_MINPRI
51 # define EV_MINPRI -2
52 #endif
53 #ifndef EV_MAXPRI
54 # define EV_MAXPRI +2
55 #endif
56
57 #ifndef EV_MULTIPLICITY
58 # define EV_MULTIPLICITY 1
59 #endif
60
61 #ifndef EV_PERIODIC_ENABLE
62 # define EV_PERIODIC_ENABLE 1
63 #endif
64
65 #ifndef EV_STAT_ENABLE
66 # define EV_STAT_ENABLE 1
67 #endif
68
69 #ifndef EV_IDLE_ENABLE
70 # define EV_IDLE_ENABLE 1
71 #endif
72
73 #ifndef EV_FORK_ENABLE
74 # define EV_FORK_ENABLE 1
75 #endif
76
77 #ifndef EV_EMBED_ENABLE
78 # define EV_EMBED_ENABLE 1
79 #endif
80
81 #ifndef EV_ASYNC_ENABLE
82 # define EV_ASYNC_ENABLE 1
83 #endif
84
85 #ifndef EV_WALK_ENABLE
86 # define EV_WALK_ENABLE 0 /* not yet */
87 #endif
88
89 #ifndef EV_ATOMIC_T
90 # include <signal.h>
91 # define EV_ATOMIC_T sig_atomic_t volatile
92 #endif
93
94 /*****************************************************************************/
95
96 #if EV_STAT_ENABLE
97 # ifdef _WIN32
98 # include <time.h>
99 # include <sys/types.h>
100 # endif
101 # include <sys/stat.h>
102 #endif
103
104 /* support multiple event loops? */
105 #if EV_MULTIPLICITY
106 struct ev_loop;
107 # define EV_P struct ev_loop *loop
108 # define EV_P_ EV_P,
109 # define EV_A loop
110 # define EV_A_ EV_A,
111 # define EV_DEFAULT_UC ev_default_loop_uc ()
112 # define EV_DEFAULT_UC_ EV_DEFAULT_UC,
113 # define EV_DEFAULT ev_default_loop (0)
114 # define EV_DEFAULT_ EV_DEFAULT,
115 #else
116 # define EV_P void
117 # define EV_P_
118 # define EV_A
119 # define EV_A_
120 # define EV_DEFAULT
121 # define EV_DEFAULT_
122 # define EV_DEFAULT_UC
123 # define EV_DEFAULT_UC_
124 # undef EV_EMBED_ENABLE
125 #endif
126
127 #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
128 # define EV_INLINE static inline
129 #else
130 # define EV_INLINE static
131 #endif
132
133 /*****************************************************************************/
134
135 /* eventmask, revents, events... */
136 #define EV_UNDEF -1 /* guaranteed to be invalid */
137 #define EV_NONE 0x00 /* no events */
138 #define EV_READ 0x01 /* ev_io detected read will not block */
139 #define EV_WRITE 0x02 /* ev_io detected write will not block */
140 #define EV__IOFDSET 0x80 /* internal use only */
141 #define EV_IO EV_READ /* alias for type-detection */
142 #define EV_TIMEOUT 0x00000100 /* timer timed out */
143 #define EV_TIMER EV_TIMEOUT /* alias for type-detection */
144 #define EV_PERIODIC 0x00000200 /* periodic timer timed out */
145 #define EV_SIGNAL 0x00000400 /* signal was received */
146 #define EV_CHILD 0x00000800 /* child/pid had status change */
147 #define EV_STAT 0x00001000 /* stat data changed */
148 #define EV_IDLE 0x00002000 /* event loop is idling */
149 #define EV_PREPARE 0x00004000 /* event loop about to poll */
150 #define EV_CHECK 0x00008000 /* event loop finished poll */
151 #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
152 #define EV_FORK 0x00020000 /* event loop resumed in child */
153 #define EV_ASYNC 0x00040000 /* async intra-loop signal */
154 #define EV_CUSTOM 0x01000000 /* for use by user code */
155 #define EV_ERROR 0x80000000 /* sent when an error occurs */
156
157 /* can be used to add custom fields to all watchers, while losing binary compatibility */
158 #ifndef EV_COMMON
159 # define EV_COMMON void *data;
160 #endif
161 #ifndef EV_PROTOTYPES
162 # define EV_PROTOTYPES 1
163 #endif
164
165 #define EV_VERSION_MAJOR 3
166 #define EV_VERSION_MINOR 0
167
168 #ifndef EV_CB_DECLARE
169 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
170 #endif
171 #ifndef EV_CB_INVOKE
172 # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
173 #endif
174
175 /*
176 * struct member types:
177 * private: you may look at them, but not change them,
178 * and they might not mean anything to you.
179 * ro: can be read anytime, but only changed when the watcher isn't active.
180 * rw: can be read and modified anytime, even when the watcher is active.
181 *
182 * some internal details that might be helpful for debugging:
183 *
184 * active is either 0, which means the watcher is not active,
185 * or the array index of the watcher (periodics, timers)
186 * or the array index + 1 (most other watchers)
187 * or simply 1 for watchers that aren't in some array.
188 * pending is either 0, in which case the watcher isn't,
189 * or the array index + 1 in the pendings array.
190 */
191
192 /* shared by all watchers */
193 #define EV_WATCHER(type) \
194 int active; /* private */ \
195 int pending; /* private */ \
196 int priority; /* private */ \
197 EV_COMMON /* rw */ \
198 EV_CB_DECLARE (type) /* private */
199
200 #define EV_WATCHER_LIST(type) \
201 EV_WATCHER (type) \
202 struct ev_watcher_list *next; /* private */
203
204 #define EV_WATCHER_TIME(type) \
205 EV_WATCHER (type) \
206 ev_tstamp at; /* private */
207
208 /* base class, nothing to see here unless you subclass */
209 typedef struct ev_watcher
210 {
211 EV_WATCHER (ev_watcher)
212 } ev_watcher;
213
214 /* base class, nothing to see here unless you subclass */
215 typedef struct ev_watcher_list
216 {
217 EV_WATCHER_LIST (ev_watcher_list)
218 } ev_watcher_list;
219
220 /* base class, nothing to see here unless you subclass */
221 typedef struct ev_watcher_time
222 {
223 EV_WATCHER_TIME (ev_watcher_time)
224 } ev_watcher_time;
225
226 /* invoked when fd is either EV_READable or EV_WRITEable */
227 /* revent EV_READ, EV_WRITE */
228 typedef struct ev_io
229 {
230 EV_WATCHER_LIST (ev_io)
231
232 int fd; /* ro */
233 int events; /* ro */
234 } ev_io;
235
236 /* invoked after a specific time, repeatable (based on monotonic clock) */
237 /* revent EV_TIMEOUT */
238 typedef struct ev_timer
239 {
240 EV_WATCHER_TIME (ev_timer)
241
242 ev_tstamp repeat; /* rw */
243 } ev_timer;
244
245 /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
246 /* revent EV_PERIODIC */
247 typedef struct ev_periodic
248 {
249 EV_WATCHER_TIME (ev_periodic)
250
251 ev_tstamp offset; /* rw */
252 ev_tstamp interval; /* rw */
253 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
254 } ev_periodic;
255
256 /* invoked when the given signal has been received */
257 /* revent EV_SIGNAL */
258 typedef struct ev_signal
259 {
260 EV_WATCHER_LIST (ev_signal)
261
262 int signum; /* ro */
263 } ev_signal;
264
265 /* invoked when sigchld is received and waitpid indicates the given pid */
266 /* revent EV_CHILD */
267 /* does not support priorities */
268 typedef struct ev_child
269 {
270 EV_WATCHER_LIST (ev_child)
271
272 int flags; /* private */
273 int pid; /* ro */
274 int rpid; /* rw, holds the received pid */
275 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
276 } ev_child;
277
278 #if EV_STAT_ENABLE
279 /* st_nlink = 0 means missing file or other error */
280 # ifdef _WIN32
281 typedef struct _stati64 ev_statdata;
282 # else
283 typedef struct stat ev_statdata;
284 # endif
285
286 /* invoked each time the stat data changes for a given path */
287 /* revent EV_STAT */
288 typedef struct ev_stat
289 {
290 EV_WATCHER_LIST (ev_stat)
291
292 ev_timer timer; /* private */
293 ev_tstamp interval; /* ro */
294 const char *path; /* ro */
295 ev_statdata prev; /* ro */
296 ev_statdata attr; /* ro */
297
298 int wd; /* wd for inotify, fd for kqueue */
299 } ev_stat;
300 #endif
301
302 #if EV_IDLE_ENABLE
303 /* invoked when the nothing else needs to be done, keeps the process from blocking */
304 /* revent EV_IDLE */
305 typedef struct ev_idle
306 {
307 EV_WATCHER (ev_idle)
308 } ev_idle;
309 #endif
310
311 /* invoked for each run of the mainloop, just before the blocking call */
312 /* you can still change events in any way you like */
313 /* revent EV_PREPARE */
314 typedef struct ev_prepare
315 {
316 EV_WATCHER (ev_prepare)
317 } ev_prepare;
318
319 /* invoked for each run of the mainloop, just after the blocking call */
320 /* revent EV_CHECK */
321 typedef struct ev_check
322 {
323 EV_WATCHER (ev_check)
324 } ev_check;
325
326 #if EV_FORK_ENABLE
327 /* the callback gets invoked before check in the child process when a fork was detected */
328 typedef struct ev_fork
329 {
330 EV_WATCHER (ev_fork)
331 } ev_fork;
332 #endif
333
334 #if EV_EMBED_ENABLE
335 /* used to embed an event loop inside another */
336 /* the callback gets invoked when the event loop has handled events, and can be 0 */
337 typedef struct ev_embed
338 {
339 EV_WATCHER (ev_embed)
340
341 struct ev_loop *other; /* ro */
342 ev_io io; /* private */
343 ev_prepare prepare; /* private */
344 ev_check check; /* unused */
345 ev_timer timer; /* unused */
346 ev_periodic periodic; /* unused */
347 ev_idle idle; /* unused */
348 ev_fork fork; /* private */
349 } ev_embed;
350 #endif
351
352 #if EV_ASYNC_ENABLE
353 /* invoked when somebody calls ev_async_send on the watcher */
354 /* revent EV_ASYNC */
355 typedef struct ev_async
356 {
357 EV_WATCHER (ev_async)
358
359 EV_ATOMIC_T sent; /* private */
360 } ev_async;
361
362 # define ev_async_pending(w) ((w)->sent + 0)
363 #endif
364
365 /* the presence of this union forces similar struct layout */
366 union ev_any_watcher
367 {
368 struct ev_watcher w;
369 struct ev_watcher_list wl;
370
371 struct ev_io io;
372 struct ev_timer timer;
373 struct ev_periodic periodic;
374 struct ev_signal signal;
375 struct ev_child child;
376 #if EV_STAT_ENABLE
377 struct ev_stat stat;
378 #endif
379 #if EV_IDLE_ENABLE
380 struct ev_idle idle;
381 #endif
382 struct ev_prepare prepare;
383 struct ev_check check;
384 #if EV_FORK_ENABLE
385 struct ev_fork fork;
386 #endif
387 #if EV_EMBED_ENABLE
388 struct ev_embed embed;
389 #endif
390 #if EV_ASYNC_ENABLE
391 struct ev_async async;
392 #endif
393 };
394
395 /* bits for ev_default_loop and ev_loop_new */
396 /* the default */
397 #define EVFLAG_AUTO 0x00000000U /* not quite a mask */
398 /* flag bits */
399 #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
400 #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
401 /* method bits to be ored together */
402 #define EVBACKEND_SELECT 0x00000001U /* about anywhere */
403 #define EVBACKEND_POLL 0x00000002U /* !win */
404 #define EVBACKEND_EPOLL 0x00000004U /* linux */
405 #define EVBACKEND_KQUEUE 0x00000008U /* bsd */
406 #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
407 #define EVBACKEND_PORT 0x00000020U /* solaris 10 */
408
409 #if EV_PROTOTYPES
410 int ev_version_major (void);
411 int ev_version_minor (void);
412
413 unsigned int ev_supported_backends (void);
414 unsigned int ev_recommended_backends (void);
415 unsigned int ev_embeddable_backends (void);
416
417 ev_tstamp ev_time (void);
418 void ev_sleep (ev_tstamp delay); /* sleep for a while */
419
420 /* Sets the allocation function to use, works like realloc.
421 * It is used to allocate and free memory.
422 * If it returns zero when memory needs to be allocated, the library might abort
423 * or take some potentially destructive action.
424 * The default is your system realloc function.
425 */
426 void ev_set_allocator (void *(*cb)(void *ptr, long size));
427
428 /* set the callback function to call on a
429 * retryable syscall error
430 * (such as failed select, poll, epoll_wait)
431 */
432 void ev_set_syserr_cb (void (*cb)(const char *msg));
433
434 #if EV_MULTIPLICITY
435 EV_INLINE struct ev_loop *
436 ev_default_loop_uc (void)
437 {
438 extern struct ev_loop *ev_default_loop_ptr;
439
440 return ev_default_loop_ptr;
441 }
442
443 /* the default loop is the only one that handles signals and child watchers */
444 /* you can call this as often as you like */
445 EV_INLINE struct ev_loop *
446 ev_default_loop (unsigned int flags)
447 {
448 struct ev_loop *loop = ev_default_loop_uc ();
449
450 if (!loop)
451 {
452 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
453
454 loop = ev_default_loop_init (flags);
455 }
456
457 return loop;
458 }
459
460 /* create and destroy alternative loops that don't handle signals */
461 struct ev_loop *ev_loop_new (unsigned int flags);
462 void ev_loop_destroy (EV_P);
463 void ev_loop_fork (EV_P);
464 void ev_loop_verify (EV_P);
465
466 ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
467 void ev_now_update (EV_P);
468
469 #else
470
471 int ev_default_loop (unsigned int flags); /* returns true when successful */
472
473 EV_INLINE ev_tstamp
474 ev_now (void)
475 {
476 extern ev_tstamp ev_rt_now;
477
478 return ev_rt_now;
479 }
480 #endif /* multiplicity */
481
482 EV_INLINE int
483 ev_is_default_loop (EV_P)
484 {
485 #if EV_MULTIPLICITY
486 extern struct ev_loop *ev_default_loop_ptr;
487
488 return !!(EV_A == ev_default_loop_ptr);
489 #else
490 return 1;
491 #endif
492 }
493
494 void ev_default_destroy (void); /* destroy the default loop */
495 /* this needs to be called after fork, to duplicate the default loop */
496 /* if you create alternative loops you have to call ev_loop_fork on them */
497 /* you can call it in either the parent or the child */
498 /* you can actually call it at any time, anywhere :) */
499 void ev_default_fork (void);
500
501 #if EV_WALK_ENABLE
502 /* walk (almost) all watchers in the loop of a given type, invoking the */
503 /* callback on every such watcher. The callback might stop the watcher, */
504 /* but do nothing else with the loop */
505 void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
506 #endif
507
508 unsigned int ev_backend (EV_P); /* backend in use by loop */
509 unsigned int ev_loop_count (EV_P); /* number of loop iterations */
510 #endif /* prototypes */
511
512 #define EVLOOP_NONBLOCK 1 /* do not block/wait */
513 #define EVLOOP_ONESHOT 2 /* block *once* only */
514 #define EVUNLOOP_CANCEL 0 /* undo unloop */
515 #define EVUNLOOP_ONE 1 /* unloop once */
516 #define EVUNLOOP_ALL 2 /* unloop all loops */
517
518 #if EV_PROTOTYPES
519 void ev_loop (EV_P_ int flags);
520 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 */
521
522 void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
523 void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
524
525 /*
526 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
527 * keeps one reference. if you have a long-runing watcher you never unregister that
528 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
529 */
530 void ev_ref (EV_P);
531 void ev_unref (EV_P);
532
533 /*
534 * stop/start the timer handling.
535 */
536 void ev_suspend (EV_P);
537 void ev_resume (EV_P);
538
539 /*
540 * convenience function, wait for a single event, without registering an event watcher
541 * if timeout is < 0, do wait indefinitely
542 */
543 void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
544 #endif
545
546 /* these may evaluate ev multiple times, and the other arguments at most once */
547 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
548 #define ev_init(ev,cb_) do { \
549 ((ev_watcher *)(void *)(ev))->active = \
550 ((ev_watcher *)(void *)(ev))->pending = \
551 ((ev_watcher *)(void *)(ev))->priority = 0; \
552 ev_set_cb ((ev), cb_); \
553 } while (0)
554
555 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
556 #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
557 #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
558 #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
559 #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
560 #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
561 #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
562 #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
563 #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
564 #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
565 #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
566 #define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
567
568 #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
569 #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
570 #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
571 #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
572 #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
573 #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
574 #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
575 #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
576 #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
577 #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
578 #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
579 #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
580
581 #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
582 #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
583
584 #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
585 #define ev_cb(ev) (ev)->cb /* rw */
586 #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
587
588 #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
589
590 #ifndef ev_set_cb
591 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
592 #endif
593
594 /* stopping (enabling, adding) a watcher does nothing if it is already running */
595 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
596 #if EV_PROTOTYPES
597
598 /* feeds an event into a watcher as if the event actually occured */
599 /* accepts any ev_watcher type */
600 void ev_feed_event (EV_P_ void *w, int revents);
601 void ev_feed_fd_event (EV_P_ int fd, int revents);
602 void ev_feed_signal_event (EV_P_ int signum);
603 void ev_invoke (EV_P_ void *w, int revents);
604 int ev_clear_pending (EV_P_ void *w);
605
606 void ev_io_start (EV_P_ ev_io *w);
607 void ev_io_stop (EV_P_ ev_io *w);
608
609 void ev_timer_start (EV_P_ ev_timer *w);
610 void ev_timer_stop (EV_P_ ev_timer *w);
611 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
612 void ev_timer_again (EV_P_ ev_timer *w);
613
614 #if EV_PERIODIC_ENABLE
615 void ev_periodic_start (EV_P_ ev_periodic *w);
616 void ev_periodic_stop (EV_P_ ev_periodic *w);
617 void ev_periodic_again (EV_P_ ev_periodic *w);
618 #endif
619
620 /* only supported in the default loop */
621 void ev_signal_start (EV_P_ ev_signal *w);
622 void ev_signal_stop (EV_P_ ev_signal *w);
623
624 /* only supported in the default loop */
625 void ev_child_start (EV_P_ ev_child *w);
626 void ev_child_stop (EV_P_ ev_child *w);
627
628 # if EV_STAT_ENABLE
629 void ev_stat_start (EV_P_ ev_stat *w);
630 void ev_stat_stop (EV_P_ ev_stat *w);
631 void ev_stat_stat (EV_P_ ev_stat *w);
632 # endif
633
634 # if EV_IDLE_ENABLE
635 void ev_idle_start (EV_P_ ev_idle *w);
636 void ev_idle_stop (EV_P_ ev_idle *w);
637 # endif
638
639 void ev_prepare_start (EV_P_ ev_prepare *w);
640 void ev_prepare_stop (EV_P_ ev_prepare *w);
641
642 void ev_check_start (EV_P_ ev_check *w);
643 void ev_check_stop (EV_P_ ev_check *w);
644
645 # if EV_FORK_ENABLE
646 void ev_fork_start (EV_P_ ev_fork *w);
647 void ev_fork_stop (EV_P_ ev_fork *w);
648 # endif
649
650 # if EV_EMBED_ENABLE
651 /* only supported when loop to be embedded is in fact embeddable */
652 void ev_embed_start (EV_P_ ev_embed *w);
653 void ev_embed_stop (EV_P_ ev_embed *w);
654 void ev_embed_sweep (EV_P_ ev_embed *w);
655 # endif
656
657 # if EV_ASYNC_ENABLE
658 void ev_async_start (EV_P_ ev_async *w);
659 void ev_async_stop (EV_P_ ev_async *w);
660 void ev_async_send (EV_P_ ev_async *w);
661 # endif
662
663 #endif
664
665 #ifdef __cplusplus
666 }
667 #endif
668
669 #endif
670