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Comparing libev/ev.h (file contents):
Revision 1.3 by root, Tue Oct 30 23:10:33 2007 UTC vs.
Revision 1.112 by root, Sat Mar 28 22:17:17 2009 UTC

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
1#ifndef EV_H 40#ifndef EV_H__
2#define EV_H 41#define EV_H__
42
43#ifdef __cplusplus
44extern "C" {
45#endif
3 46
4typedef double ev_tstamp; 47typedef double ev_tstamp;
5 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# ifdef _WIN32
94# include <time.h>
95# include <sys/types.h>
96# endif
97# include <sys/stat.h>
98#endif
99
100/* support multiple event loops? */
101#if EV_MULTIPLICITY
102struct 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# define EV_DEFAULT_UC ev_default_loop_uc ()
108# define EV_DEFAULT_UC_ EV_DEFAULT_UC,
109# define EV_DEFAULT ev_default_loop (0)
110# define EV_DEFAULT_ EV_DEFAULT,
111#else
112# define EV_P void
113# define EV_P_
114# define EV_A
115# define EV_A_
116# define EV_DEFAULT
117# define EV_DEFAULT_
118# define EV_DEFAULT_UC
119# define EV_DEFAULT_UC_
120# undef EV_EMBED_ENABLE
121#endif
122
123#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
124# define EV_INLINE static inline
125#else
126# define EV_INLINE static
127#endif
128
129/*****************************************************************************/
130
6/* eventmask, revents, events... */ 131/* eventmask, revents, events... */
7#define EV_UNDEF -1 /* guaranteed to be invalid */ 132#define EV_UNDEF -1 /* guaranteed to be invalid */
8#define EV_NONE 0 133#define EV_NONE 0x00 /* no events */
9#define EV_READ 1 134#define EV_READ 0x01 /* ev_io detected read will not block */
10#define EV_WRITE 2 135#define EV_WRITE 0x02 /* ev_io detected write will not block */
11#define EV_TIMEOUT 4 136#define EV__IOFDSET 0x80 /* internal use only */
12#define EV_SIGNAL 8 137#define EV_IO EV_READ /* alias for type-detection */
138#define EV_TIMEOUT 0x00000100 /* timer timed out */
139#define EV_TIMER EV_TIMEOUT /* alias for type-detection */
140#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
152/* can be used to add custom fields to all watchers, while losing binary compatibility */
153#ifndef EV_COMMON
154# define EV_COMMON void *data;
155#endif
156#ifndef EV_PROTOTYPES
157# define EV_PROTOTYPES 1
158#endif
159
160#define EV_VERSION_MAJOR 3
161#define EV_VERSION_MINOR 0
162
163#ifndef EV_CB_DECLARE
164# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
165#endif
166#ifndef EV_CB_INVOKE
167# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
168#endif
169
170/*
171 * struct member types:
172 * 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 *
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 * or the array index + 1 in the pendings array.
185 */
13 186
14/* shared by all watchers */ 187/* shared by all watchers */
15#define EV_WATCHER(type) \ 188#define EV_WATCHER(type) \
16 int active; /* private */ \ 189 int active; /* private */ \
17 int pending; /* private */ \ 190 int pending; /* private */ \
18 void *data; /* rw */ \ 191 int priority; /* private */ \
19 void (*cb)(struct type *, int revents) /* rw */ 192 EV_COMMON /* rw */ \
193 EV_CB_DECLARE (type) /* private */
20 194
21#define EV_WATCHER_LIST(type) \ 195#define EV_WATCHER_LIST(type) \
22 EV_WATCHER (type); \ 196 EV_WATCHER (type) \
23 struct type *next /* private */ 197 struct ev_watcher_list *next; /* private */
24 198
25struct ev_timer 199#define EV_WATCHER_TIME(type) \
26{ 200 EV_WATCHER (type) \
27 EV_WATCHER_LIST (ev_timer);
28
29 ev_tstamp at; /* private */ 201 ev_tstamp at; /* private */
30 ev_tstamp repeat; /* rw */
31 unsigned char is_abs; /* ro */
32};
33 202
203/* base class, nothing to see here unless you subclass */
204typedef struct ev_watcher
205{
206 EV_WATCHER (ev_watcher)
207} ev_watcher;
208
209/* base class, nothing to see here unless you subclass */
210typedef struct ev_watcher_list
211{
212 EV_WATCHER_LIST (ev_watcher_list)
213} ev_watcher_list;
214
215/* base class, nothing to see here unless you subclass */
216typedef struct ev_watcher_time
217{
218 EV_WATCHER_TIME (ev_watcher_time)
219} ev_watcher_time;
220
221/* invoked when fd is either EV_READable or EV_WRITEable */
222/* revent EV_READ, EV_WRITE */
34struct ev_io 223typedef struct ev_io
35{ 224{
36 EV_WATCHER_LIST (ev_io); 225 EV_WATCHER_LIST (ev_io)
37 226
38 int fd; /* ro */ 227 int fd; /* ro */
39 int events; /* ro */ 228 int events; /* ro */
229} ev_io;
230
231/* invoked after a specific time, repeatable (based on monotonic clock) */
232/* revent EV_TIMEOUT */
233typedef struct ev_timer
234{
235 EV_WATCHER_TIME (ev_timer)
236
237 ev_tstamp repeat; /* rw */
238} ev_timer;
239
240/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
241/* revent EV_PERIODIC */
242typedef struct ev_periodic
243{
244 EV_WATCHER_TIME (ev_periodic)
245
246 ev_tstamp offset; /* rw */
247 ev_tstamp interval; /* rw */
248 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
249} ev_periodic;
250
251/* invoked when the given signal has been received */
252/* revent EV_SIGNAL */
253typedef struct ev_signal
254{
255 EV_WATCHER_LIST (ev_signal)
256
257 int signum; /* ro */
258} ev_signal;
259
260/* invoked when sigchld is received and waitpid indicates the given pid */
261/* revent EV_CHILD */
262/* does not support priorities */
263typedef struct ev_child
264{
265 EV_WATCHER_LIST (ev_child)
266
267 int flags; /* private */
268 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# ifdef _WIN32
276typedef struct _stati64 ev_statdata;
277# else
278typedef struct stat ev_statdata;
279# endif
280
281/* invoked each time the stat data changes for a given path */
282/* revent EV_STAT */
283typedef struct ev_stat
284{
285 EV_WATCHER_LIST (ev_stat)
286
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
293 int wd; /* wd for inotify, fd for kqueue */
294} ev_stat;
295#endif
296
297#if EV_IDLE_ENABLE
298/* invoked when the nothing else needs to be done, keeps the process from blocking */
299/* revent EV_IDLE */
300typedef struct ev_idle
301{
302 EV_WATCHER (ev_idle)
303} ev_idle;
304#endif
305
306/* invoked for each run of the mainloop, just before the blocking call */
307/* you can still change events in any way you like */
308/* revent EV_PREPARE */
309typedef struct ev_prepare
310{
311 EV_WATCHER (ev_prepare)
312} ev_prepare;
313
314/* invoked for each run of the mainloop, just after the blocking call */
315/* revent EV_CHECK */
316typedef struct ev_check
317{
318 EV_WATCHER (ev_check)
319} ev_check;
320
321#if EV_FORK_ENABLE
322/* the callback gets invoked before check in the child process when a fork was detected */
323typedef struct ev_fork
324{
325 EV_WATCHER (ev_fork)
326} ev_fork;
327#endif
328
329#if EV_EMBED_ENABLE
330/* used to embed an event loop inside another */
331/* the callback gets invoked when the event loop has handled events, and can be 0 */
332typedef struct ev_embed
333{
334 EV_WATCHER (ev_embed)
335
336 struct ev_loop *other; /* ro */
337 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 ev_fork fork; /* private */
344} ev_embed;
345#endif
346
347#if EV_ASYNC_ENABLE
348/* invoked when somebody calls ev_async_send on the watcher */
349/* revent EV_ASYNC */
350typedef struct ev_async
351{
352 EV_WATCHER (ev_async)
353
354 EV_ATOMIC_T sent; /* private */
355} ev_async;
356
357# define ev_async_pending(w) ((w)->sent + 0)
358#endif
359
360/* the presence of this union forces similar struct layout */
361union ev_any_watcher
362{
363 struct ev_watcher w;
364 struct ev_watcher_list wl;
365
366 struct ev_io io;
367 struct ev_timer timer;
368 struct ev_periodic periodic;
369 struct ev_signal signal;
370 struct ev_child child;
371#if EV_STAT_ENABLE
372 struct ev_stat stat;
373#endif
374#if EV_IDLE_ENABLE
375 struct ev_idle idle;
376#endif
377 struct ev_prepare prepare;
378 struct ev_check check;
379#if EV_FORK_ENABLE
380 struct ev_fork fork;
381#endif
382#if EV_EMBED_ENABLE
383 struct ev_embed embed;
384#endif
385#if EV_ASYNC_ENABLE
386 struct ev_async async;
387#endif
40}; 388};
41 389
42struct ev_signal 390/* bits for ev_default_loop and ev_loop_new */
43{ 391/* the default */
44 EV_WATCHER_LIST (ev_signal); 392#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
393/* flag bits */
394#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
395#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
396/* method bits to be ored together */
397#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 */
45 403
46 int signum; /* ro */ 404#if EV_PROTOTYPES
47}; 405int ev_version_major (void);
406int ev_version_minor (void);
48 407
49#define EVMETHOD_NONE 0 408unsigned int ev_supported_backends (void);
50#define EVMETHOD_SELECT 1 409unsigned int ev_recommended_backends (void);
51#define EVMETHOD_EPOLL 2 410unsigned int ev_embeddable_backends (void);
52int ev_init (int flags);
53extern int ev_method;
54 411
55void ev_prefork (void);
56void ev_postfork_parent (void);
57void ev_postfork_child (void);
58
59extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
60ev_tstamp ev_time (void); 412ev_tstamp ev_time (void);
413void ev_sleep (ev_tstamp delay); /* sleep for a while */
414
415/* 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 */
421void ev_set_allocator (void *(*cb)(void *ptr, long size));
422
423/* set the callback function to call on a
424 * retryable syscall error
425 * (such as failed select, poll, epoll_wait)
426 */
427void ev_set_syserr_cb (void (*cb)(const char *msg));
428
429#if EV_MULTIPLICITY
430EV_INLINE struct ev_loop *
431ev_default_loop_uc (void)
432{
433 extern struct ev_loop *ev_default_loop_ptr;
434
435 return ev_default_loop_ptr;
436}
437
438/* the default loop is the only one that handles signals and child watchers */
439/* you can call this as often as you like */
440EV_INLINE struct ev_loop *
441ev_default_loop (unsigned int flags)
442{
443 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
449 loop = ev_default_loop_init (flags);
450 }
451
452 return loop;
453}
454
455/* create and destroy alternative loops that don't handle signals */
456struct ev_loop *ev_loop_new (unsigned int flags);
457void ev_loop_destroy (EV_P);
458void ev_loop_fork (EV_P);
459void ev_loop_verify (EV_P);
460
461ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
462void ev_now_update (EV_P);
463
464#else
465
466int ev_default_loop (unsigned int flags); /* returns true when successful */
467
468EV_INLINE ev_tstamp
469ev_now (void)
470{
471 extern ev_tstamp ev_rt_now;
472
473 return ev_rt_now;
474}
475#endif /* multiplicity */
476
477EV_INLINE int
478ev_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
489void 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 :) */
494void ev_default_fork (void);
495
496#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 */
500void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
501#endif
502
503unsigned int ev_backend (EV_P); /* backend in use by loop */
504unsigned int ev_loop_count (EV_P); /* number of loop iterations */
505#endif /* prototypes */
61 506
62#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 507#define EVLOOP_NONBLOCK 1 /* do not block/wait */
63#define EVLOOP_ONESHOT 2 /* block *once* only */ 508#define EVLOOP_ONESHOT 2 /* block *once* only */
509#define EVUNLOOP_CANCEL 0 /* undo unloop */
510#define EVUNLOOP_ONE 1 /* unloop once */
511#define EVUNLOOP_ALL 2 /* unloop all loops */
512
513#if EV_PROTOTYPES
64void ev_loop (int flags); 514void ev_loop (EV_P_ int flags);
65extern int ev_loop_done; /* set to 1 to break out of event loop */ 515void 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
517void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
518void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
519
520/*
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 */
525void ev_ref (EV_P);
526void ev_unref (EV_P);
527
528/* convenience function, wait for a single event, without registering an event watcher */
529/* if timeout is < 0, do wait indefinitely */
530void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
531#endif
66 532
67/* these may evaluate ev multiple times, and the other arguments at most once */ 533/* these may evaluate ev multiple times, and the other arguments at most once */
68#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0) 534/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
535#define ev_init(ev,cb_) do { \
536 ((ev_watcher *)(void *)(ev))->active = \
537 ((ev_watcher *)(void *)(ev))->pending = \
538 ((ev_watcher *)(void *)(ev))->priority = 0; \
539 ev_set_cb ((ev), cb_); \
540} while (0)
69 541
70#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 542#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
71#define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0) 543#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
72#define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0) 544#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
73#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } 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)
74 554
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 */
75#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ 569#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
76 570
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
575#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
576
577#ifndef ev_set_cb
578# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
579#endif
580
581/* 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#if EV_PROTOTYPES
584
585/* feeds an event into a watcher as if the event actually occured */
586/* accepts any ev_watcher type */
587void ev_feed_event (EV_P_ void *w, int revents);
588void ev_feed_fd_event (EV_P_ int fd, int revents);
589void ev_feed_signal_event (EV_P_ int signum);
590void ev_invoke (EV_P_ void *w, int revents);
591int ev_clear_pending (EV_P_ void *w);
592
77void evio_start (struct ev_io *w); 593void ev_io_start (EV_P_ ev_io *w);
78void evio_stop (struct ev_io *w); 594void ev_io_stop (EV_P_ ev_io *w);
79 595
80void evtimer_start (struct ev_timer *w); 596void ev_timer_start (EV_P_ ev_timer *w);
81void evtimer_stop (struct ev_timer *w); 597void ev_timer_stop (EV_P_ ev_timer *w);
598/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
599void ev_timer_again (EV_P_ ev_timer *w);
82 600
601#if EV_PERIODIC_ENABLE
602void ev_periodic_start (EV_P_ ev_periodic *w);
603void ev_periodic_stop (EV_P_ ev_periodic *w);
604void ev_periodic_again (EV_P_ ev_periodic *w);
605#endif
606
607/* only supported in the default loop */
83void evsignal_start (struct ev_signal *w); 608void ev_signal_start (EV_P_ ev_signal *w);
84void evsignal_stop (struct ev_signal *w); 609void ev_signal_stop (EV_P_ ev_signal *w);
85 610
611/* only supported in the default loop */
612void ev_child_start (EV_P_ ev_child *w);
613void ev_child_stop (EV_P_ ev_child *w);
614
615# if EV_STAT_ENABLE
616void ev_stat_start (EV_P_ ev_stat *w);
617void ev_stat_stop (EV_P_ ev_stat *w);
618void ev_stat_stat (EV_P_ ev_stat *w);
86#endif 619# endif
87 620
621# if EV_IDLE_ENABLE
622void ev_idle_start (EV_P_ ev_idle *w);
623void ev_idle_stop (EV_P_ ev_idle *w);
624# endif
625
626void ev_prepare_start (EV_P_ ev_prepare *w);
627void ev_prepare_stop (EV_P_ ev_prepare *w);
628
629void ev_check_start (EV_P_ ev_check *w);
630void ev_check_stop (EV_P_ ev_check *w);
631
632# if EV_FORK_ENABLE
633void ev_fork_start (EV_P_ ev_fork *w);
634void ev_fork_stop (EV_P_ ev_fork *w);
635# endif
636
637# if EV_EMBED_ENABLE
638/* only supported when loop to be embedded is in fact embeddable */
639void ev_embed_start (EV_P_ ev_embed *w);
640void ev_embed_stop (EV_P_ ev_embed *w);
641void ev_embed_sweep (EV_P_ ev_embed *w);
642# endif
643
644# if EV_ASYNC_ENABLE
645void ev_async_start (EV_P_ ev_async *w);
646void ev_async_stop (EV_P_ ev_async *w);
647void ev_async_send (EV_P_ ev_async *w);
648# endif
649
650#endif
651
652#ifdef __cplusplus
653}
654#endif
655
656#endif
657

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