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Revision: 1.94
Committed: Tue Feb 19 17:09:28 2008 UTC (16 years, 5 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: rel-3_1
Changes since 1.93: +12 -0 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 /*
2 * libev native API header
3 *
4 * Copyright (c) 2007,2008 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_ATOMIC_T
86 # include <signal.h>
87 # define EV_ATOMIC_T sig_atomic_t volatile
88 #endif
89
90 /*****************************************************************************/
91
92 #if EV_STAT_ENABLE
93 # include <sys/stat.h>
94 #endif
95
96 /* support multiple event loops? */
97 #if EV_MULTIPLICITY
98 struct ev_loop;
99 # define EV_P struct ev_loop *loop
100 # define EV_P_ EV_P,
101 # define EV_A loop
102 # define EV_A_ EV_A,
103 # define EV_DEFAULT ev_default_loop (0)
104 # define EV_DEFAULT_ EV_DEFAULT,
105 #else
106 # define EV_P void
107 # define EV_P_
108 # define EV_A
109 # define EV_A_
110 # define EV_DEFAULT
111 # define EV_DEFAULT_
112
113 # undef EV_EMBED_ENABLE
114 #endif
115
116 /* eventmask, revents, events... */
117 #define EV_UNDEF -1L /* guaranteed to be invalid */
118 #define EV_NONE 0x00L /* no events */
119 #define EV_READ 0x01L /* ev_io detected read will not block */
120 #define EV_WRITE 0x02L /* ev_io detected write will not block */
121 #define EV_IOFDSET 0x80L /* internal use only */
122 #define EV_TIMEOUT 0x00000100L /* timer timed out */
123 #define EV_PERIODIC 0x00000200L /* periodic timer timed out */
124 #define EV_SIGNAL 0x00000400L /* signal was received */
125 #define EV_CHILD 0x00000800L /* child/pid had status change */
126 #define EV_STAT 0x00001000L /* stat data changed */
127 #define EV_IDLE 0x00002000L /* event loop is idling */
128 #define EV_PREPARE 0x00004000L /* event loop about to poll */
129 #define EV_CHECK 0x00008000L /* event loop finished poll */
130 #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */
131 #define EV_FORK 0x00020000L /* event loop resumed in child */
132 #define EV_ASYNC 0x00040000L /* async intra-loop signal */
133 #define EV_ERROR 0x80000000L /* sent when an error occurs */
134
135 /* can be used to add custom fields to all watchers, while losing binary compatibility */
136 #ifndef EV_COMMON
137 # define EV_COMMON void *data;
138 #endif
139 #ifndef EV_PROTOTYPES
140 # define EV_PROTOTYPES 1
141 #endif
142
143 #define EV_VERSION_MAJOR 3
144 #define EV_VERSION_MINOR 0
145
146 #ifndef EV_CB_DECLARE
147 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
148 #endif
149 #ifndef EV_CB_INVOKE
150 # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
151 #endif
152
153 /*
154 * struct member types:
155 * private: you can look at them, but not change them, and they might not mean anything to you.
156 * ro: can be read anytime, but only changed when the watcher isn't active
157 * rw: can be read and modified anytime, even when the watcher is active
158 */
159
160 /* shared by all watchers */
161 #define EV_WATCHER(type) \
162 int active; /* private */ \
163 int pending; /* private */ \
164 int priority; /* private */ \
165 EV_COMMON /* rw */ \
166 EV_CB_DECLARE (type) /* private */
167
168 #define EV_WATCHER_LIST(type) \
169 EV_WATCHER (type) \
170 struct ev_watcher_list *next; /* private */
171
172 #define EV_WATCHER_TIME(type) \
173 EV_WATCHER (type) \
174 ev_tstamp at; /* private */
175
176 /* base class, nothing to see here unless you subclass */
177 typedef struct ev_watcher
178 {
179 EV_WATCHER (ev_watcher)
180 } ev_watcher;
181
182 /* base class, nothing to see here unless you subclass */
183 typedef struct ev_watcher_list
184 {
185 EV_WATCHER_LIST (ev_watcher_list)
186 } ev_watcher_list;
187
188 /* base class, nothing to see here unless you subclass */
189 typedef struct ev_watcher_time
190 {
191 EV_WATCHER_TIME (ev_watcher_time)
192 } ev_watcher_time;
193
194 /* invoked when fd is either EV_READable or EV_WRITEable */
195 /* revent EV_READ, EV_WRITE */
196 typedef struct ev_io
197 {
198 EV_WATCHER_LIST (ev_io)
199
200 int fd; /* ro */
201 int events; /* ro */
202 } ev_io;
203
204 /* invoked after a specific time, repeatable (based on monotonic clock) */
205 /* revent EV_TIMEOUT */
206 typedef struct ev_timer
207 {
208 EV_WATCHER_TIME (ev_timer)
209
210 ev_tstamp repeat; /* rw */
211 } ev_timer;
212
213 /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
214 /* revent EV_PERIODIC */
215 typedef struct ev_periodic
216 {
217 EV_WATCHER_TIME (ev_periodic)
218
219 ev_tstamp offset; /* rw */
220 ev_tstamp interval; /* rw */
221 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
222 } ev_periodic;
223
224 /* invoked when the given signal has been received */
225 /* revent EV_SIGNAL */
226 typedef struct ev_signal
227 {
228 EV_WATCHER_LIST (ev_signal)
229
230 int signum; /* ro */
231 } ev_signal;
232
233 /* invoked when sigchld is received and waitpid indicates the given pid */
234 /* revent EV_CHILD */
235 /* does not support priorities */
236 typedef struct ev_child
237 {
238 EV_WATCHER_LIST (ev_child)
239
240 int flags; /* private */
241 int pid; /* ro */
242 int rpid; /* rw, holds the received pid */
243 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
244 } ev_child;
245
246 #if EV_STAT_ENABLE
247 /* st_nlink = 0 means missing file or other error */
248 # ifdef _WIN32
249 typedef struct _stati64 ev_statdata;
250 # else
251 typedef struct stat ev_statdata;
252 # endif
253
254 /* invoked each time the stat data changes for a given path */
255 /* revent EV_STAT */
256 typedef struct ev_stat
257 {
258 EV_WATCHER_LIST (ev_stat)
259
260 ev_timer timer; /* private */
261 ev_tstamp interval; /* ro */
262 const char *path; /* ro */
263 ev_statdata prev; /* ro */
264 ev_statdata attr; /* ro */
265
266 int wd; /* wd for inotify, fd for kqueue */
267 } ev_stat;
268 #endif
269
270 #if EV_IDLE_ENABLE
271 /* invoked when the nothing else needs to be done, keeps the process from blocking */
272 /* revent EV_IDLE */
273 typedef struct ev_idle
274 {
275 EV_WATCHER (ev_idle)
276 } ev_idle;
277 #endif
278
279 /* invoked for each run of the mainloop, just before the blocking call */
280 /* you can still change events in any way you like */
281 /* revent EV_PREPARE */
282 typedef struct ev_prepare
283 {
284 EV_WATCHER (ev_prepare)
285 } ev_prepare;
286
287 /* invoked for each run of the mainloop, just after the blocking call */
288 /* revent EV_CHECK */
289 typedef struct ev_check
290 {
291 EV_WATCHER (ev_check)
292 } ev_check;
293
294 #if EV_FORK_ENABLE
295 /* the callback gets invoked before check in the child process when a fork was detected */
296 typedef struct ev_fork
297 {
298 EV_WATCHER (ev_fork)
299 } ev_fork;
300 #endif
301
302 #if EV_EMBED_ENABLE
303 /* used to embed an event loop inside another */
304 /* the callback gets invoked when the event loop has handled events, and can be 0 */
305 typedef struct ev_embed
306 {
307 EV_WATCHER (ev_embed)
308
309 struct ev_loop *other; /* ro */
310 ev_io io; /* private */
311 ev_prepare prepare; /* private */
312 ev_check check; /* unused */
313 ev_timer timer; /* unused */
314 ev_periodic periodic; /* unused */
315 ev_idle idle; /* unused */
316 ev_fork fork; /* unused */
317 } ev_embed;
318 #endif
319
320 #if EV_ASYNC_ENABLE
321 /* invoked when somebody calls ev_async_send on the watcher */
322 /* revent EV_ASYNC */
323 typedef struct ev_async
324 {
325 EV_WATCHER (ev_async)
326
327 EV_ATOMIC_T sent; /* private */
328 } ev_async;
329 #endif
330
331 /* the presence of this union forces similar struct layout */
332 union ev_any_watcher
333 {
334 struct ev_watcher w;
335 struct ev_watcher_list wl;
336
337 struct ev_io io;
338 struct ev_timer timer;
339 struct ev_periodic periodic;
340 struct ev_signal signal;
341 struct ev_child child;
342 #if EV_STAT_ENABLE
343 struct ev_stat stat;
344 #endif
345 #if EV_IDLE_ENABLE
346 struct ev_idle idle;
347 #endif
348 struct ev_prepare prepare;
349 struct ev_check check;
350 #if EV_FORK_ENABLE
351 struct ev_fork fork;
352 #endif
353 #if EV_EMBED_ENABLE
354 struct ev_embed embed;
355 #endif
356 #if EV_ASYND_ENABLE
357 struct ev_async async;
358 #endif
359 };
360
361 /* bits for ev_default_loop and ev_loop_new */
362 /* the default */
363 #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */
364 /* flag bits */
365 #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */
366 #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */
367 /* method bits to be ored together */
368 #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */
369 #define EVBACKEND_POLL 0x00000002UL /* !win */
370 #define EVBACKEND_EPOLL 0x00000004UL /* linux */
371 #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */
372 #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */
373 #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */
374
375 #if EV_PROTOTYPES
376 int ev_version_major (void);
377 int ev_version_minor (void);
378
379 unsigned int ev_supported_backends (void);
380 unsigned int ev_recommended_backends (void);
381 unsigned int ev_embeddable_backends (void);
382
383 ev_tstamp ev_time (void);
384 void ev_sleep (ev_tstamp delay); /* sleep for a while */
385
386 /* Sets the allocation function to use, works like realloc.
387 * It is used to allocate and free memory.
388 * If it returns zero when memory needs to be allocated, the library might abort
389 * or take some potentially destructive action.
390 * The default is your system realloc function.
391 */
392 void ev_set_allocator (void *(*cb)(void *ptr, long size));
393
394 /* set the callback function to call on a
395 * retryable syscall error
396 * (such as failed select, poll, epoll_wait)
397 */
398 void ev_set_syserr_cb (void (*cb)(const char *msg));
399
400 # if EV_MULTIPLICITY
401 /* the default loop is the only one that handles signals and child watchers */
402 /* you can call this as often as you like */
403 static struct ev_loop *
404 ev_default_loop (unsigned int flags)
405 {
406 extern struct ev_loop *ev_default_loop_ptr;
407 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
408
409 if (!ev_default_loop_ptr)
410 ev_default_loop_init (flags);
411
412 return ev_default_loop_ptr;
413 }
414
415 /* create and destroy alternative loops that don't handle signals */
416 struct ev_loop *ev_loop_new (unsigned int flags);
417 void ev_loop_destroy (EV_P);
418 void ev_loop_fork (EV_P);
419
420 ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
421
422 # else
423
424 int ev_default_loop (unsigned int flags); /* returns true when successful */
425
426 static ev_tstamp
427 ev_now (void)
428 {
429 extern ev_tstamp ev_rt_now;
430
431 return ev_rt_now;
432 }
433 # endif
434
435 static int
436 ev_is_default_loop (EV_P)
437 {
438 #if EV_MULTIPLICITY
439 extern struct ev_loop *ev_default_loop_ptr;
440
441 return !!(EV_A == ev_default_loop_ptr);
442 #else
443 return 1;
444 #endif
445 }
446
447 void ev_default_destroy (void); /* destroy the default loop */
448 /* this needs to be called after fork, to duplicate the default loop */
449 /* if you create alternative loops you have to call ev_loop_fork on them */
450 /* you can call it in either the parent or the child */
451 /* you can actually call it at any time, anywhere :) */
452 void ev_default_fork (void);
453
454 unsigned int ev_backend (EV_P); /* backend in use by loop */
455 unsigned int ev_loop_count (EV_P); /* number of loop iterations */
456 #endif
457
458 #define EVLOOP_NONBLOCK 1 /* do not block/wait */
459 #define EVLOOP_ONESHOT 2 /* block *once* only */
460 #define EVUNLOOP_CANCEL 0 /* undo unloop */
461 #define EVUNLOOP_ONE 1 /* unloop once */
462 #define EVUNLOOP_ALL 2 /* unloop all loops */
463
464 #if EV_PROTOTYPES
465 void ev_loop (EV_P_ int flags);
466 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 */
467
468 void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
469 void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
470
471 /*
472 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
473 * keeps one reference. if you have a long-runing watcher you never unregister that
474 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
475 */
476 void ev_ref (EV_P);
477 void ev_unref (EV_P);
478
479 /* convinience function, wait for a single event, without registering an event watcher */
480 /* if timeout is < 0, do wait indefinitely */
481 void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
482 #endif
483
484 /* these may evaluate ev multiple times, and the other arguments at most once */
485 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
486 #define ev_init(ev,cb_) do { \
487 ((ev_watcher *)(void *)(ev))->active = \
488 ((ev_watcher *)(void *)(ev))->pending = \
489 ((ev_watcher *)(void *)(ev))->priority = 0; \
490 ev_set_cb ((ev), cb_); \
491 } while (0)
492
493 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0)
494 #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
495 #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
496 #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
497 #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
498 #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
499 #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
500 #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
501 #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
502 #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
503 #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
504 #define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
505
506 #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
507 #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
508 #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
509 #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
510 #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
511 #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
512 #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
513 #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
514 #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
515 #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
516 #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
517 #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
518
519 #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
520 #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
521
522 #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
523 #define ev_cb(ev) (ev)->cb /* rw */
524 #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
525
526 #ifndef ev_set_cb
527 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
528 #endif
529
530 /* stopping (enabling, adding) a watcher does nothing if it is already running */
531 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
532 #if EV_PROTOTYPES
533
534 /* feeds an event into a watcher as if the event actually occured */
535 /* accepts any ev_watcher type */
536 void ev_feed_event (EV_P_ void *w, int revents);
537 void ev_feed_fd_event (EV_P_ int fd, int revents);
538 void ev_feed_signal_event (EV_P_ int signum);
539 void ev_invoke (EV_P_ void *w, int revents);
540 int ev_clear_pending (EV_P_ void *w);
541
542 void ev_io_start (EV_P_ ev_io *w);
543 void ev_io_stop (EV_P_ ev_io *w);
544
545 void ev_timer_start (EV_P_ ev_timer *w);
546 void ev_timer_stop (EV_P_ ev_timer *w);
547 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
548 void ev_timer_again (EV_P_ ev_timer *w);
549
550 #if EV_PERIODIC_ENABLE
551 void ev_periodic_start (EV_P_ ev_periodic *w);
552 void ev_periodic_stop (EV_P_ ev_periodic *w);
553 void ev_periodic_again (EV_P_ ev_periodic *w);
554 #endif
555
556 /* only supported in the default loop */
557 void ev_signal_start (EV_P_ ev_signal *w);
558 void ev_signal_stop (EV_P_ ev_signal *w);
559
560 /* only supported in the default loop */
561 void ev_child_start (EV_P_ ev_child *w);
562 void ev_child_stop (EV_P_ ev_child *w);
563
564 # if EV_STAT_ENABLE
565 void ev_stat_start (EV_P_ ev_stat *w);
566 void ev_stat_stop (EV_P_ ev_stat *w);
567 void ev_stat_stat (EV_P_ ev_stat *w);
568 # endif
569
570 # if EV_IDLE_ENABLE
571 void ev_idle_start (EV_P_ ev_idle *w);
572 void ev_idle_stop (EV_P_ ev_idle *w);
573 # endif
574
575 void ev_prepare_start (EV_P_ ev_prepare *w);
576 void ev_prepare_stop (EV_P_ ev_prepare *w);
577
578 void ev_check_start (EV_P_ ev_check *w);
579 void ev_check_stop (EV_P_ ev_check *w);
580
581 # if EV_FORK_ENABLE
582 void ev_fork_start (EV_P_ ev_fork *w);
583 void ev_fork_stop (EV_P_ ev_fork *w);
584 # endif
585
586 # if EV_EMBED_ENABLE
587 /* only supported when loop to be embedded is in fact embeddable */
588 void ev_embed_start (EV_P_ ev_embed *w);
589 void ev_embed_stop (EV_P_ ev_embed *w);
590 void ev_embed_sweep (EV_P_ ev_embed *w);
591 # endif
592
593 # if EV_ASYNC_ENABLE
594 void ev_async_start (EV_P_ ev_async *w);
595 void ev_async_stop (EV_P_ ev_async *w);
596 void ev_async_send (EV_P_ ev_async *w);
597 # endif
598
599 #endif
600
601 #ifdef __cplusplus
602 }
603 #endif
604
605 #endif
606