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Revision: 1.112
Committed: Sat Mar 28 22:17:17 2009 UTC (15 years, 1 month ago) by root
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Branch: MAIN
Changes since 1.111: +8 -0 lines
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1 root 1.10 /*
2 root 1.90 * libev native API header
3     *
4 root 1.109 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 root 1.10 * All rights reserved.
6     *
7 root 1.90 * 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 root 1.10 *
28 root 1.90 * 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 root 1.10 */
39    
40 root 1.43 #ifndef EV_H__
41     #define EV_H__
42 root 1.1
43 root 1.19 #ifdef __cplusplus
44     extern "C" {
45     #endif
46    
47 root 1.1 typedef double ev_tstamp;
48    
49 root 1.21 /* 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 root 1.29 #ifndef EV_MULTIPLICITY
58     # define EV_MULTIPLICITY 1
59     #endif
60    
61 root 1.69 #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 root 1.78 #ifndef EV_IDLE_ENABLE
70     # define EV_IDLE_ENABLE 1
71     #endif
72    
73 root 1.72 #ifndef EV_FORK_ENABLE
74     # define EV_FORK_ENABLE 1
75     #endif
76    
77 root 1.69 #ifndef EV_EMBED_ENABLE
78     # define EV_EMBED_ENABLE 1
79     #endif
80    
81 root 1.92 #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 root 1.69 /*****************************************************************************/
91    
92     #if EV_STAT_ENABLE
93 root 1.103 # ifdef _WIN32
94     # include <time.h>
95     # include <sys/types.h>
96     # endif
97 root 1.69 # include <sys/stat.h>
98 root 1.50 #endif
99    
100 root 1.28 /* support multiple event loops? */
101 root 1.29 #if EV_MULTIPLICITY
102 root 1.28 struct ev_loop;
103     # define EV_P struct ev_loop *loop
104     # define EV_P_ EV_P,
105     # define EV_A loop
106     # define EV_A_ EV_A,
107 root 1.96 # define EV_DEFAULT_UC ev_default_loop_uc ()
108     # define EV_DEFAULT_UC_ EV_DEFAULT_UC,
109 root 1.72 # define EV_DEFAULT ev_default_loop (0)
110     # define EV_DEFAULT_ EV_DEFAULT,
111 root 1.28 #else
112     # define EV_P void
113     # define EV_P_
114     # define EV_A
115     # define EV_A_
116 root 1.72 # define EV_DEFAULT
117     # define EV_DEFAULT_
118 root 1.96 # define EV_DEFAULT_UC
119     # define EV_DEFAULT_UC_
120     # undef EV_EMBED_ENABLE
121     #endif
122 root 1.69
123 root 1.96 #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
124     # define EV_INLINE static inline
125     #else
126     # define EV_INLINE static
127 root 1.28 #endif
128 root 1.27
129 root 1.96 /*****************************************************************************/
130    
131 root 1.1 /* eventmask, revents, events... */
132 root 1.99 #define EV_UNDEF -1 /* guaranteed to be invalid */
133     #define EV_NONE 0x00 /* no events */
134     #define EV_READ 0x01 /* ev_io detected read will not block */
135     #define EV_WRITE 0x02 /* ev_io detected write will not block */
136 root 1.111 #define EV__IOFDSET 0x80 /* internal use only */
137     #define EV_IO EV_READ /* alias for type-detection */
138 root 1.99 #define EV_TIMEOUT 0x00000100 /* timer timed out */
139 root 1.112 #define EV_TIMER EV_TIMEOUT /* alias for type-detection */
140 root 1.99 #define EV_PERIODIC 0x00000200 /* periodic timer timed out */
141     #define EV_SIGNAL 0x00000400 /* signal was received */
142     #define EV_CHILD 0x00000800 /* child/pid had status change */
143     #define EV_STAT 0x00001000 /* stat data changed */
144     #define EV_IDLE 0x00002000 /* event loop is idling */
145     #define EV_PREPARE 0x00004000 /* event loop about to poll */
146     #define EV_CHECK 0x00008000 /* event loop finished poll */
147     #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
148     #define EV_FORK 0x00020000 /* event loop resumed in child */
149     #define EV_ASYNC 0x00040000 /* async intra-loop signal */
150     #define EV_ERROR 0x80000000 /* sent when an error occurs */
151 root 1.1
152 root 1.51 /* can be used to add custom fields to all watchers, while losing binary compatibility */
153 root 1.6 #ifndef EV_COMMON
154 root 1.52 # define EV_COMMON void *data;
155 root 1.6 #endif
156 root 1.9 #ifndef EV_PROTOTYPES
157     # define EV_PROTOTYPES 1
158     #endif
159 root 1.6
160 root 1.91 #define EV_VERSION_MAJOR 3
161 root 1.83 #define EV_VERSION_MINOR 0
162 root 1.14
163 root 1.44 #ifndef EV_CB_DECLARE
164 root 1.46 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
165 root 1.44 #endif
166     #ifndef EV_CB_INVOKE
167     # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
168     #endif
169    
170 root 1.6 /*
171     * struct member types:
172 root 1.108 * private: you may look at them, but not change them,
173     * and they might not mean anything to you.
174     * ro: can be read anytime, but only changed when the watcher isn't active.
175     * rw: can be read and modified anytime, even when the watcher is active.
176 root 1.101 *
177     * some internal details that might be helpful for debugging:
178     *
179     * active is either 0, which means the watcher is not active,
180     * or the array index of the watcher (periodics, timers)
181     * or the array index + 1 (most other watchers)
182     * or simply 1 for watchers that aren't in some array.
183     * pending is either 0, in which case the watcher isn't,
184 root 1.108 * or the array index + 1 in the pendings array.
185 root 1.6 */
186    
187 root 1.1 /* shared by all watchers */
188     #define EV_WATCHER(type) \
189     int active; /* private */ \
190     int pending; /* private */ \
191 root 1.32 int priority; /* private */ \
192 root 1.52 EV_COMMON /* rw */ \
193 root 1.44 EV_CB_DECLARE (type) /* private */
194 root 1.1
195     #define EV_WATCHER_LIST(type) \
196 root 1.52 EV_WATCHER (type) \
197     struct ev_watcher_list *next; /* private */
198 root 1.1
199 root 1.6 #define EV_WATCHER_TIME(type) \
200 root 1.52 EV_WATCHER (type) \
201     ev_tstamp at; /* private */
202 root 1.6
203 root 1.7 /* base class, nothing to see here unless you subclass */
204 root 1.66 typedef struct ev_watcher
205 root 1.44 {
206 root 1.52 EV_WATCHER (ev_watcher)
207 root 1.66 } ev_watcher;
208 root 1.7
209     /* base class, nothing to see here unless you subclass */
210 root 1.66 typedef struct ev_watcher_list
211 root 1.44 {
212 root 1.52 EV_WATCHER_LIST (ev_watcher_list)
213 root 1.66 } ev_watcher_list;
214 root 1.7
215     /* base class, nothing to see here unless you subclass */
216 root 1.66 typedef struct ev_watcher_time
217 root 1.44 {
218 root 1.52 EV_WATCHER_TIME (ev_watcher_time)
219 root 1.66 } ev_watcher_time;
220 root 1.7
221 root 1.70 /* invoked when fd is either EV_READable or EV_WRITEable */
222     /* revent EV_READ, EV_WRITE */
223     typedef struct ev_io
224     {
225     EV_WATCHER_LIST (ev_io)
226    
227     int fd; /* ro */
228     int events; /* ro */
229     } ev_io;
230    
231 root 1.6 /* invoked after a specific time, repeatable (based on monotonic clock) */
232 root 1.17 /* revent EV_TIMEOUT */
233 root 1.66 typedef struct ev_timer
234 root 1.1 {
235 root 1.52 EV_WATCHER_TIME (ev_timer)
236 root 1.1
237     ev_tstamp repeat; /* rw */
238 root 1.66 } ev_timer;
239 root 1.6
240     /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
241 root 1.17 /* revent EV_PERIODIC */
242 root 1.66 typedef struct ev_periodic
243 root 1.6 {
244 root 1.52 EV_WATCHER_TIME (ev_periodic)
245 root 1.6
246 root 1.82 ev_tstamp offset; /* rw */
247 root 1.6 ev_tstamp interval; /* rw */
248 root 1.40 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
249 root 1.66 } ev_periodic;
250 root 1.1
251 root 1.5 /* invoked when the given signal has been received */
252 root 1.17 /* revent EV_SIGNAL */
253 root 1.66 typedef struct ev_signal
254 root 1.1 {
255 root 1.52 EV_WATCHER_LIST (ev_signal)
256 root 1.1
257     int signum; /* ro */
258 root 1.66 } ev_signal;
259 root 1.1
260 root 1.70 /* invoked when sigchld is received and waitpid indicates the given pid */
261     /* revent EV_CHILD */
262     /* does not support priorities */
263     typedef struct ev_child
264     {
265     EV_WATCHER_LIST (ev_child)
266    
267 root 1.91 int flags; /* private */
268 root 1.70 int pid; /* ro */
269     int rpid; /* rw, holds the received pid */
270     int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
271     } ev_child;
272    
273     #if EV_STAT_ENABLE
274     /* st_nlink = 0 means missing file or other error */
275 root 1.74 # ifdef _WIN32
276 root 1.71 typedef struct _stati64 ev_statdata;
277 root 1.74 # else
278 root 1.70 typedef struct stat ev_statdata;
279 root 1.74 # endif
280 root 1.70
281     /* invoked each time the stat data changes for a given path */
282     /* revent EV_STAT */
283     typedef struct ev_stat
284     {
285 root 1.74 EV_WATCHER_LIST (ev_stat)
286 root 1.70
287     ev_timer timer; /* private */
288     ev_tstamp interval; /* ro */
289     const char *path; /* ro */
290     ev_statdata prev; /* ro */
291     ev_statdata attr; /* ro */
292 root 1.74
293     int wd; /* wd for inotify, fd for kqueue */
294 root 1.70 } ev_stat;
295     #endif
296    
297 root 1.78 #if EV_IDLE_ENABLE
298 root 1.5 /* invoked when the nothing else needs to be done, keeps the process from blocking */
299 root 1.17 /* revent EV_IDLE */
300 root 1.66 typedef struct ev_idle
301 root 1.5 {
302 root 1.52 EV_WATCHER (ev_idle)
303 root 1.66 } ev_idle;
304 root 1.78 #endif
305 root 1.5
306 root 1.11 /* invoked for each run of the mainloop, just before the blocking call */
307     /* you can still change events in any way you like */
308 root 1.17 /* revent EV_PREPARE */
309 root 1.66 typedef struct ev_prepare
310 root 1.11 {
311 root 1.52 EV_WATCHER (ev_prepare)
312 root 1.66 } ev_prepare;
313 root 1.11
314     /* invoked for each run of the mainloop, just after the blocking call */
315 root 1.17 /* revent EV_CHECK */
316 root 1.66 typedef struct ev_check
317 root 1.5 {
318 root 1.52 EV_WATCHER (ev_check)
319 root 1.66 } ev_check;
320 root 1.5
321 root 1.72 #if EV_FORK_ENABLE
322     /* the callback gets invoked before check in the child process when a fork was detected */
323     typedef struct ev_fork
324     {
325     EV_WATCHER (ev_fork)
326     } ev_fork;
327     #endif
328    
329 root 1.69 #if EV_EMBED_ENABLE
330 root 1.64 /* used to embed an event loop inside another */
331     /* the callback gets invoked when the event loop has handled events, and can be 0 */
332 root 1.66 typedef struct ev_embed
333 root 1.64 {
334     EV_WATCHER (ev_embed)
335    
336 root 1.86 struct ev_loop *other; /* ro */
337 root 1.87 ev_io io; /* private */
338     ev_prepare prepare; /* private */
339     ev_check check; /* unused */
340     ev_timer timer; /* unused */
341     ev_periodic periodic; /* unused */
342     ev_idle idle; /* unused */
343 root 1.106 ev_fork fork; /* private */
344 root 1.66 } ev_embed;
345 root 1.64 #endif
346    
347 root 1.92 #if EV_ASYNC_ENABLE
348     /* invoked when somebody calls ev_async_send on the watcher */
349     /* revent EV_ASYNC */
350     typedef struct ev_async
351     {
352     EV_WATCHER (ev_async)
353    
354     EV_ATOMIC_T sent; /* private */
355     } ev_async;
356 root 1.95
357 root 1.98 # define ev_async_pending(w) ((w)->sent + 0)
358 root 1.92 #endif
359    
360 root 1.41 /* the presence of this union forces similar struct layout */
361 root 1.35 union ev_any_watcher
362     {
363     struct ev_watcher w;
364     struct ev_watcher_list wl;
365 root 1.46
366 root 1.35 struct ev_io io;
367     struct ev_timer timer;
368     struct ev_periodic periodic;
369 root 1.72 struct ev_signal signal;
370 root 1.70 struct ev_child child;
371     #if EV_STAT_ENABLE
372     struct ev_stat stat;
373     #endif
374 root 1.78 #if EV_IDLE_ENABLE
375 root 1.35 struct ev_idle idle;
376 root 1.78 #endif
377 root 1.35 struct ev_prepare prepare;
378     struct ev_check check;
379 root 1.72 #if EV_FORK_ENABLE
380     struct ev_fork fork;
381     #endif
382 root 1.69 #if EV_EMBED_ENABLE
383 root 1.64 struct ev_embed embed;
384 root 1.67 #endif
385 root 1.97 #if EV_ASYNC_ENABLE
386 root 1.92 struct ev_async async;
387     #endif
388 root 1.35 };
389    
390 root 1.53 /* bits for ev_default_loop and ev_loop_new */
391     /* the default */
392 root 1.99 #define EVFLAG_AUTO 0x00000000U /* not quite a mask */
393 root 1.63 /* flag bits */
394 root 1.99 #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
395     #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
396 root 1.53 /* method bits to be ored together */
397 root 1.99 #define EVBACKEND_SELECT 0x00000001U /* about anywhere */
398     #define EVBACKEND_POLL 0x00000002U /* !win */
399     #define EVBACKEND_EPOLL 0x00000004U /* linux */
400     #define EVBACKEND_KQUEUE 0x00000008U /* bsd */
401     #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
402     #define EVBACKEND_PORT 0x00000020U /* solaris 10 */
403 root 1.29
404 root 1.9 #if EV_PROTOTYPES
405 root 1.14 int ev_version_major (void);
406     int ev_version_minor (void);
407 root 1.1
408 root 1.63 unsigned int ev_supported_backends (void);
409     unsigned int ev_recommended_backends (void);
410 root 1.64 unsigned int ev_embeddable_backends (void);
411 root 1.63
412 root 1.1 ev_tstamp ev_time (void);
413 root 1.88 void ev_sleep (ev_tstamp delay); /* sleep for a while */
414 root 1.29
415 root 1.36 /* Sets the allocation function to use, works like realloc.
416     * It is used to allocate and free memory.
417     * If it returns zero when memory needs to be allocated, the library might abort
418     * or take some potentially destructive action.
419     * The default is your system realloc function.
420     */
421 root 1.75 void ev_set_allocator (void *(*cb)(void *ptr, long size));
422 root 1.36
423     /* set the callback function to call on a
424     * retryable syscall error
425     * (such as failed select, poll, epoll_wait)
426     */
427 root 1.37 void ev_set_syserr_cb (void (*cb)(const char *msg));
428 root 1.36
429 root 1.102 #if EV_MULTIPLICITY
430 root 1.96 EV_INLINE struct ev_loop *
431     ev_default_loop_uc (void)
432     {
433     extern struct ev_loop *ev_default_loop_ptr;
434    
435     return ev_default_loop_ptr;
436     }
437    
438 root 1.30 /* the default loop is the only one that handles signals and child watchers */
439     /* you can call this as often as you like */
440 root 1.96 EV_INLINE struct ev_loop *
441 root 1.58 ev_default_loop (unsigned int flags)
442     {
443 root 1.96 struct ev_loop *loop = ev_default_loop_uc ();
444    
445     if (!loop)
446     {
447     extern struct ev_loop *ev_default_loop_init (unsigned int flags);
448 root 1.58
449 root 1.96 loop = ev_default_loop_init (flags);
450     }
451 root 1.58
452 root 1.96 return loop;
453 root 1.58 }
454 root 1.30
455     /* create and destroy alternative loops that don't handle signals */
456 root 1.53 struct ev_loop *ev_loop_new (unsigned int flags);
457 root 1.30 void ev_loop_destroy (EV_P);
458     void ev_loop_fork (EV_P);
459 root 1.102 void ev_loop_verify (EV_P);
460 root 1.47
461     ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
462 root 1.105 void ev_now_update (EV_P);
463 root 1.47
464 root 1.102 #else
465 root 1.47
466 root 1.54 int ev_default_loop (unsigned int flags); /* returns true when successful */
467 root 1.47
468 root 1.96 EV_INLINE ev_tstamp
469 root 1.52 ev_now (void)
470 root 1.47 {
471 root 1.48 extern ev_tstamp ev_rt_now;
472 root 1.47
473     return ev_rt_now;
474     }
475 root 1.102 #endif /* multiplicity */
476 root 1.29
477 root 1.96 EV_INLINE int
478 root 1.94 ev_is_default_loop (EV_P)
479     {
480     #if EV_MULTIPLICITY
481     extern struct ev_loop *ev_default_loop_ptr;
482    
483     return !!(EV_A == ev_default_loop_ptr);
484     #else
485     return 1;
486     #endif
487     }
488    
489 root 1.30 void ev_default_destroy (void); /* destroy the default loop */
490     /* this needs to be called after fork, to duplicate the default loop */
491     /* if you create alternative loops you have to call ev_loop_fork on them */
492     /* you can call it in either the parent or the child */
493     /* you can actually call it at any time, anywhere :) */
494     void ev_default_fork (void);
495    
496 root 1.112 #if 0
497     /* walk (almost) all watchers in the loop of a given type, invoking the */
498     /* callback on every such watcher. The callback might stop the watcher, */
499     /* but do nothing else with the loop */
500     void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
501     #endif
502    
503 root 1.88 unsigned int ev_backend (EV_P); /* backend in use by loop */
504     unsigned int ev_loop_count (EV_P); /* number of loop iterations */
505 root 1.102 #endif /* prototypes */
506 root 1.1
507     #define EVLOOP_NONBLOCK 1 /* do not block/wait */
508     #define EVLOOP_ONESHOT 2 /* block *once* only */
509 root 1.65 #define EVUNLOOP_CANCEL 0 /* undo unloop */
510 root 1.57 #define EVUNLOOP_ONE 1 /* unloop once */
511 root 1.29 #define EVUNLOOP_ALL 2 /* unloop all loops */
512    
513 root 1.9 #if EV_PROTOTYPES
514 root 1.27 void ev_loop (EV_P_ int flags);
515 root 1.29 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 */
516 root 1.27
517 root 1.88 void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
518     void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
519    
520 root 1.27 /*
521     * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
522     * keeps one reference. if you have a long-runing watcher you never unregister that
523     * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
524     */
525     void ev_ref (EV_P);
526     void ev_unref (EV_P);
527 root 1.1
528 root 1.107 /* convenience function, wait for a single event, without registering an event watcher */
529 root 1.9 /* if timeout is < 0, do wait indefinitely */
530 root 1.27 void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
531 root 1.9 #endif
532    
533 root 1.2 /* these may evaluate ev multiple times, and the other arguments at most once */
534 root 1.45 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
535 root 1.78 #define ev_init(ev,cb_) do { \
536 root 1.66 ((ev_watcher *)(void *)(ev))->active = \
537     ((ev_watcher *)(void *)(ev))->pending = \
538     ((ev_watcher *)(void *)(ev))->priority = 0; \
539 root 1.78 ev_set_cb ((ev), cb_); \
540 root 1.32 } while (0)
541 root 1.3
542 root 1.111 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
543 root 1.110 #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
544     #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
545     #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
546     #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
547     #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
548     #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
549     #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
550     #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
551     #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
552     #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
553     #define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
554    
555     #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
556     #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
557     #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
558     #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
559     #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
560     #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
561     #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
562     #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
563     #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
564     #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
565     #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
566     #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
567    
568     #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
569     #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
570    
571     #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
572     #define ev_cb(ev) (ev)->cb /* rw */
573     #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
574 root 1.45
575 root 1.110 #define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
576 root 1.100
577 root 1.45 #ifndef ev_set_cb
578 root 1.110 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
579 root 1.45 #endif
580 root 1.1
581 root 1.5 /* stopping (enabling, adding) a watcher does nothing if it is already running */
582     /* stopping (disabling, deleting) a watcher does nothing unless its already running */
583 root 1.9 #if EV_PROTOTYPES
584 root 1.41
585     /* feeds an event into a watcher as if the event actually occured */
586     /* accepts any ev_watcher type */
587     void ev_feed_event (EV_P_ void *w, int revents);
588 root 1.42 void ev_feed_fd_event (EV_P_ int fd, int revents);
589     void ev_feed_signal_event (EV_P_ int signum);
590 root 1.81 void ev_invoke (EV_P_ void *w, int revents);
591 root 1.80 int ev_clear_pending (EV_P_ void *w);
592 root 1.41
593 root 1.66 void ev_io_start (EV_P_ ev_io *w);
594     void ev_io_stop (EV_P_ ev_io *w);
595 root 1.6
596 root 1.66 void ev_timer_start (EV_P_ ev_timer *w);
597     void ev_timer_stop (EV_P_ ev_timer *w);
598 root 1.30 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
599 root 1.66 void ev_timer_again (EV_P_ ev_timer *w);
600 root 1.1
601 root 1.69 #if EV_PERIODIC_ENABLE
602 root 1.66 void ev_periodic_start (EV_P_ ev_periodic *w);
603     void ev_periodic_stop (EV_P_ ev_periodic *w);
604     void ev_periodic_again (EV_P_ ev_periodic *w);
605 root 1.50 #endif
606 root 1.1
607 root 1.70 /* only supported in the default loop */
608     void ev_signal_start (EV_P_ ev_signal *w);
609     void ev_signal_stop (EV_P_ ev_signal *w);
610    
611     /* only supported in the default loop */
612     void ev_child_start (EV_P_ ev_child *w);
613     void ev_child_stop (EV_P_ ev_child *w);
614    
615     # if EV_STAT_ENABLE
616     void ev_stat_start (EV_P_ ev_stat *w);
617     void ev_stat_stop (EV_P_ ev_stat *w);
618     void ev_stat_stat (EV_P_ ev_stat *w);
619     # endif
620    
621 root 1.78 # if EV_IDLE_ENABLE
622 root 1.66 void ev_idle_start (EV_P_ ev_idle *w);
623     void ev_idle_stop (EV_P_ ev_idle *w);
624 root 1.78 # endif
625 root 1.5
626 root 1.66 void ev_prepare_start (EV_P_ ev_prepare *w);
627     void ev_prepare_stop (EV_P_ ev_prepare *w);
628 root 1.11
629 root 1.66 void ev_check_start (EV_P_ ev_check *w);
630     void ev_check_stop (EV_P_ ev_check *w);
631 root 1.12
632 root 1.72 # if EV_FORK_ENABLE
633     void ev_fork_start (EV_P_ ev_fork *w);
634     void ev_fork_stop (EV_P_ ev_fork *w);
635     # endif
636    
637 root 1.69 # if EV_EMBED_ENABLE
638 root 1.64 /* only supported when loop to be embedded is in fact embeddable */
639 root 1.66 void ev_embed_start (EV_P_ ev_embed *w);
640     void ev_embed_stop (EV_P_ ev_embed *w);
641 root 1.68 void ev_embed_sweep (EV_P_ ev_embed *w);
642 root 1.64 # endif
643    
644 root 1.92 # if EV_ASYNC_ENABLE
645     void ev_async_start (EV_P_ ev_async *w);
646     void ev_async_stop (EV_P_ ev_async *w);
647     void ev_async_send (EV_P_ ev_async *w);
648     # endif
649    
650 root 1.9 #endif
651 root 1.5
652 root 1.19 #ifdef __cplusplus
653     }
654     #endif
655    
656 root 1.1 #endif
657