ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.h
Revision: 1.130
Committed: Thu Dec 31 06:59:47 2009 UTC (14 years, 6 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: rel-3_9
Changes since 1.129: +1 -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 9
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 #if EV_MINPRI == EV_MAXPRI
193 # define EV_DECL_PRIORITY
194 #else
195 # define EV_DECL_PRIORITY int priority;
196 #endif
197
198 /* shared by all watchers */
199 #define EV_WATCHER(type) \
200 int active; /* private */ \
201 int pending; /* private */ \
202 EV_DECL_PRIORITY /* private */ \
203 EV_COMMON /* rw */ \
204 EV_CB_DECLARE (type) /* private */
205
206 #define EV_WATCHER_LIST(type) \
207 EV_WATCHER (type) \
208 struct ev_watcher_list *next; /* private */
209
210 #define EV_WATCHER_TIME(type) \
211 EV_WATCHER (type) \
212 ev_tstamp at; /* private */
213
214 /* base class, nothing to see here unless you subclass */
215 typedef struct ev_watcher
216 {
217 EV_WATCHER (ev_watcher)
218 } ev_watcher;
219
220 /* base class, nothing to see here unless you subclass */
221 typedef struct ev_watcher_list
222 {
223 EV_WATCHER_LIST (ev_watcher_list)
224 } ev_watcher_list;
225
226 /* base class, nothing to see here unless you subclass */
227 typedef struct ev_watcher_time
228 {
229 EV_WATCHER_TIME (ev_watcher_time)
230 } ev_watcher_time;
231
232 /* invoked when fd is either EV_READable or EV_WRITEable */
233 /* revent EV_READ, EV_WRITE */
234 typedef struct ev_io
235 {
236 EV_WATCHER_LIST (ev_io)
237
238 int fd; /* ro */
239 int events; /* ro */
240 } ev_io;
241
242 /* invoked after a specific time, repeatable (based on monotonic clock) */
243 /* revent EV_TIMEOUT */
244 typedef struct ev_timer
245 {
246 EV_WATCHER_TIME (ev_timer)
247
248 ev_tstamp repeat; /* rw */
249 } ev_timer;
250
251 /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
252 /* revent EV_PERIODIC */
253 typedef struct ev_periodic
254 {
255 EV_WATCHER_TIME (ev_periodic)
256
257 ev_tstamp offset; /* rw */
258 ev_tstamp interval; /* rw */
259 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
260 } ev_periodic;
261
262 /* invoked when the given signal has been received */
263 /* revent EV_SIGNAL */
264 typedef struct ev_signal
265 {
266 EV_WATCHER_LIST (ev_signal)
267
268 int signum; /* ro */
269 } ev_signal;
270
271 /* invoked when sigchld is received and waitpid indicates the given pid */
272 /* revent EV_CHILD */
273 /* does not support priorities */
274 typedef struct ev_child
275 {
276 EV_WATCHER_LIST (ev_child)
277
278 int flags; /* private */
279 int pid; /* ro */
280 int rpid; /* rw, holds the received pid */
281 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
282 } ev_child;
283
284 #if EV_STAT_ENABLE
285 /* st_nlink = 0 means missing file or other error */
286 # ifdef _WIN32
287 typedef struct _stati64 ev_statdata;
288 # else
289 typedef struct stat ev_statdata;
290 # endif
291
292 /* invoked each time the stat data changes for a given path */
293 /* revent EV_STAT */
294 typedef struct ev_stat
295 {
296 EV_WATCHER_LIST (ev_stat)
297
298 ev_timer timer; /* private */
299 ev_tstamp interval; /* ro */
300 const char *path; /* ro */
301 ev_statdata prev; /* ro */
302 ev_statdata attr; /* ro */
303
304 int wd; /* wd for inotify, fd for kqueue */
305 } ev_stat;
306 #endif
307
308 #if EV_IDLE_ENABLE
309 /* invoked when the nothing else needs to be done, keeps the process from blocking */
310 /* revent EV_IDLE */
311 typedef struct ev_idle
312 {
313 EV_WATCHER (ev_idle)
314 } ev_idle;
315 #endif
316
317 /* invoked for each run of the mainloop, just before the blocking call */
318 /* you can still change events in any way you like */
319 /* revent EV_PREPARE */
320 typedef struct ev_prepare
321 {
322 EV_WATCHER (ev_prepare)
323 } ev_prepare;
324
325 /* invoked for each run of the mainloop, just after the blocking call */
326 /* revent EV_CHECK */
327 typedef struct ev_check
328 {
329 EV_WATCHER (ev_check)
330 } ev_check;
331
332 #if EV_FORK_ENABLE
333 /* the callback gets invoked before check in the child process when a fork was detected */
334 typedef struct ev_fork
335 {
336 EV_WATCHER (ev_fork)
337 } ev_fork;
338 #endif
339
340 #if EV_EMBED_ENABLE
341 /* used to embed an event loop inside another */
342 /* the callback gets invoked when the event loop has handled events, and can be 0 */
343 typedef struct ev_embed
344 {
345 EV_WATCHER (ev_embed)
346
347 struct ev_loop *other; /* ro */
348 ev_io io; /* private */
349 ev_prepare prepare; /* private */
350 ev_check check; /* unused */
351 ev_timer timer; /* unused */
352 ev_periodic periodic; /* unused */
353 ev_idle idle; /* unused */
354 ev_fork fork; /* private */
355 } ev_embed;
356 #endif
357
358 #if EV_ASYNC_ENABLE
359 /* invoked when somebody calls ev_async_send on the watcher */
360 /* revent EV_ASYNC */
361 typedef struct ev_async
362 {
363 EV_WATCHER (ev_async)
364
365 EV_ATOMIC_T sent; /* private */
366 } ev_async;
367
368 # define ev_async_pending(w) (+(w)->sent)
369 #endif
370
371 /* the presence of this union forces similar struct layout */
372 union ev_any_watcher
373 {
374 struct ev_watcher w;
375 struct ev_watcher_list wl;
376
377 struct ev_io io;
378 struct ev_timer timer;
379 struct ev_periodic periodic;
380 struct ev_signal signal;
381 struct ev_child child;
382 #if EV_STAT_ENABLE
383 struct ev_stat stat;
384 #endif
385 #if EV_IDLE_ENABLE
386 struct ev_idle idle;
387 #endif
388 struct ev_prepare prepare;
389 struct ev_check check;
390 #if EV_FORK_ENABLE
391 struct ev_fork fork;
392 #endif
393 #if EV_EMBED_ENABLE
394 struct ev_embed embed;
395 #endif
396 #if EV_ASYNC_ENABLE
397 struct ev_async async;
398 #endif
399 };
400
401 /* bits for ev_default_loop and ev_loop_new */
402 /* the default */
403 #define EVFLAG_AUTO 0x00000000U /* not quite a mask */
404 /* flag bits */
405 #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
406 #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
407 /* debugging/feature disable */
408 #define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */
409 #define EVFLAG_NOSIGFD 0 /* compatibility to pre-3.9 */
410 #define EVFLAG_SIGNALFD 0x00200000U /* attempt to use signalfd */
411 /* method bits to be ored together */
412 #define EVBACKEND_SELECT 0x00000001U /* about anywhere */
413 #define EVBACKEND_POLL 0x00000002U /* !win */
414 #define EVBACKEND_EPOLL 0x00000004U /* linux */
415 #define EVBACKEND_KQUEUE 0x00000008U /* bsd */
416 #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
417 #define EVBACKEND_PORT 0x00000020U /* solaris 10 */
418 #define EVBACKEND_ALL 0x0000003FU
419
420 #if EV_PROTOTYPES
421 int ev_version_major (void);
422 int ev_version_minor (void);
423
424 unsigned int ev_supported_backends (void);
425 unsigned int ev_recommended_backends (void);
426 unsigned int ev_embeddable_backends (void);
427
428 ev_tstamp ev_time (void);
429 void ev_sleep (ev_tstamp delay); /* sleep for a while */
430
431 /* Sets the allocation function to use, works like realloc.
432 * It is used to allocate and free memory.
433 * If it returns zero when memory needs to be allocated, the library might abort
434 * or take some potentially destructive action.
435 * The default is your system realloc function.
436 */
437 void ev_set_allocator (void *(*cb)(void *ptr, long size));
438
439 /* set the callback function to call on a
440 * retryable syscall error
441 * (such as failed select, poll, epoll_wait)
442 */
443 void ev_set_syserr_cb (void (*cb)(const char *msg));
444
445 #if EV_MULTIPLICITY
446 EV_INLINE struct ev_loop *
447 ev_default_loop_uc (void)
448 {
449 extern struct ev_loop *ev_default_loop_ptr;
450
451 return ev_default_loop_ptr;
452 }
453
454 /* the default loop is the only one that handles signals and child watchers */
455 /* you can call this as often as you like */
456 EV_INLINE struct ev_loop *
457 ev_default_loop (unsigned int flags)
458 {
459 struct ev_loop *loop = ev_default_loop_uc ();
460
461 if (!loop)
462 {
463 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
464
465 loop = ev_default_loop_init (flags);
466 }
467
468 return loop;
469 }
470
471 /* create and destroy alternative loops that don't handle signals */
472 struct ev_loop *ev_loop_new (unsigned int flags);
473 void ev_loop_destroy (EV_P);
474 void ev_loop_fork (EV_P);
475
476 ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
477
478 #else
479
480 int ev_default_loop (unsigned int flags); /* returns true when successful */
481
482 EV_INLINE ev_tstamp
483 ev_now (void)
484 {
485 extern ev_tstamp ev_rt_now;
486
487 return ev_rt_now;
488 }
489 #endif /* multiplicity */
490
491 EV_INLINE int
492 ev_is_default_loop (EV_P)
493 {
494 #if EV_MULTIPLICITY
495 extern struct ev_loop *ev_default_loop_ptr;
496
497 return !!(EV_A == ev_default_loop_ptr);
498 #else
499 return 1;
500 #endif
501 }
502
503 void ev_default_destroy (void); /* destroy the default loop */
504 /* this needs to be called after fork, to duplicate the default loop */
505 /* if you create alternative loops you have to call ev_loop_fork on them */
506 /* you can call it in either the parent or the child */
507 /* you can actually call it at any time, anywhere :) */
508 void ev_default_fork (void);
509
510 unsigned int ev_backend (EV_P); /* backend in use by loop */
511
512 void ev_now_update (EV_P); /* update event loop time */
513
514 #if EV_WALK_ENABLE
515 /* walk (almost) all watchers in the loop of a given type, invoking the */
516 /* callback on every such watcher. The callback might stop the watcher, */
517 /* but do nothing else with the loop */
518 void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
519 #endif
520
521 #endif /* prototypes */
522
523 #define EVLOOP_NONBLOCK 1 /* do not block/wait */
524 #define EVLOOP_ONESHOT 2 /* block *once* only */
525 #define EVUNLOOP_CANCEL 0 /* undo unloop */
526 #define EVUNLOOP_ONE 1 /* unloop once */
527 #define EVUNLOOP_ALL 2 /* unloop all loops */
528
529 #if EV_PROTOTYPES
530 void ev_loop (EV_P_ int flags);
531 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 */
532
533 /*
534 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
535 * keeps one reference. if you have a long-running watcher you never unregister that
536 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
537 */
538 void ev_ref (EV_P);
539 void ev_unref (EV_P);
540
541 /*
542 * convenience function, wait for a single event, without registering an event watcher
543 * if timeout is < 0, do wait indefinitely
544 */
545 void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
546
547 # if EV_MINIMAL < 2
548 unsigned int ev_loop_count (EV_P); /* number of loop iterations */
549 unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */
550 void ev_loop_verify (EV_P); /* abort if loop data corrupted */
551
552 void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
553 void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
554
555 /* advanced stuff for threading etc. support, see docs */
556 void ev_set_userdata (EV_P_ void *data);
557 void *ev_userdata (EV_P);
558 void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P));
559 void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P));
560
561 unsigned int ev_pending_count (EV_P); /* number of pending events, if any */
562 void ev_invoke_pending (EV_P); /* invoke all pending watchers */
563
564 /*
565 * stop/start the timer handling.
566 */
567 void ev_suspend (EV_P);
568 void ev_resume (EV_P);
569 #endif
570
571 #endif
572
573 /* these may evaluate ev multiple times, and the other arguments at most once */
574 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
575 #define ev_init(ev,cb_) do { \
576 ((ev_watcher *)(void *)(ev))->active = \
577 ((ev_watcher *)(void *)(ev))->pending = 0; \
578 ev_set_priority ((ev), 0); \
579 ev_set_cb ((ev), cb_); \
580 } while (0)
581
582 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
583 #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
584 #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
585 #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
586 #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
587 #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
588 #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
589 #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
590 #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
591 #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
592 #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
593 #define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
594
595 #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
596 #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
597 #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
598 #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
599 #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
600 #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
601 #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
602 #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
603 #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
604 #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
605 #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
606 #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
607
608 #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
609 #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
610
611 #define ev_cb(ev) (ev)->cb /* rw */
612
613 #if EV_MINPRI == EV_MAXPRI
614 # define ev_priority(ev) ((ev), EV_MINPRI)
615 # define ev_set_priority(ev,pri) ((ev), (pri))
616 #else
617 # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
618 # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
619 #endif
620
621 #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
622
623 #ifndef ev_set_cb
624 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
625 #endif
626
627 /* stopping (enabling, adding) a watcher does nothing if it is already running */
628 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
629 #if EV_PROTOTYPES
630
631 /* feeds an event into a watcher as if the event actually occured */
632 /* accepts any ev_watcher type */
633 void ev_feed_event (EV_P_ void *w, int revents);
634 void ev_feed_fd_event (EV_P_ int fd, int revents);
635 void ev_feed_signal_event (EV_P_ int signum);
636 void ev_invoke (EV_P_ void *w, int revents);
637 int ev_clear_pending (EV_P_ void *w);
638
639 void ev_io_start (EV_P_ ev_io *w);
640 void ev_io_stop (EV_P_ ev_io *w);
641
642 void ev_timer_start (EV_P_ ev_timer *w);
643 void ev_timer_stop (EV_P_ ev_timer *w);
644 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
645 void ev_timer_again (EV_P_ ev_timer *w);
646 /* return remaining time */
647 ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w);
648
649 #if EV_PERIODIC_ENABLE
650 void ev_periodic_start (EV_P_ ev_periodic *w);
651 void ev_periodic_stop (EV_P_ ev_periodic *w);
652 void ev_periodic_again (EV_P_ ev_periodic *w);
653 #endif
654
655 /* only supported in the default loop */
656 void ev_signal_start (EV_P_ ev_signal *w);
657 void ev_signal_stop (EV_P_ ev_signal *w);
658
659 /* only supported in the default loop */
660 void ev_child_start (EV_P_ ev_child *w);
661 void ev_child_stop (EV_P_ ev_child *w);
662
663 # if EV_STAT_ENABLE
664 void ev_stat_start (EV_P_ ev_stat *w);
665 void ev_stat_stop (EV_P_ ev_stat *w);
666 void ev_stat_stat (EV_P_ ev_stat *w);
667 # endif
668
669 # if EV_IDLE_ENABLE
670 void ev_idle_start (EV_P_ ev_idle *w);
671 void ev_idle_stop (EV_P_ ev_idle *w);
672 # endif
673
674 void ev_prepare_start (EV_P_ ev_prepare *w);
675 void ev_prepare_stop (EV_P_ ev_prepare *w);
676
677 void ev_check_start (EV_P_ ev_check *w);
678 void ev_check_stop (EV_P_ ev_check *w);
679
680 # if EV_FORK_ENABLE
681 void ev_fork_start (EV_P_ ev_fork *w);
682 void ev_fork_stop (EV_P_ ev_fork *w);
683 # endif
684
685 # if EV_EMBED_ENABLE
686 /* only supported when loop to be embedded is in fact embeddable */
687 void ev_embed_start (EV_P_ ev_embed *w);
688 void ev_embed_stop (EV_P_ ev_embed *w);
689 void ev_embed_sweep (EV_P_ ev_embed *w);
690 # endif
691
692 # if EV_ASYNC_ENABLE
693 void ev_async_start (EV_P_ ev_async *w);
694 void ev_async_stop (EV_P_ ev_async *w);
695 void ev_async_send (EV_P_ ev_async *w);
696 # endif
697
698 #endif
699
700 #ifdef __cplusplus
701 }
702 #endif
703
704 #endif
705