1 |
#include <math.h> |
2 |
#include <stdlib.h> |
3 |
#include <unistd.h> |
4 |
#include <fcntl.h> |
5 |
#include <signal.h> |
6 |
|
7 |
#include <stdio.h> |
8 |
|
9 |
#include <assert.h> |
10 |
#include <errno.h> |
11 |
#include <sys/time.h> |
12 |
#include <time.h> |
13 |
|
14 |
#ifndef HAVE_MONOTONIC |
15 |
# ifdef CLOCK_MONOTONIC |
16 |
# define HAVE_MONOTONIC 1 |
17 |
# endif |
18 |
#endif |
19 |
|
20 |
#ifndef HAVE_SELECT |
21 |
# define HAVE_SELECT 1 |
22 |
#endif |
23 |
|
24 |
#ifndef HAVE_EPOLL |
25 |
# define HAVE_EPOLL 0 |
26 |
#endif |
27 |
|
28 |
#ifndef HAVE_REALTIME |
29 |
# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
30 |
#endif |
31 |
|
32 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
33 |
#define MAX_BLOCKTIME 60. |
34 |
|
35 |
#include "ev.h" |
36 |
|
37 |
struct ev_watcher { |
38 |
EV_WATCHER (ev_watcher); |
39 |
}; |
40 |
|
41 |
struct ev_watcher_list { |
42 |
EV_WATCHER_LIST (ev_watcher_list); |
43 |
}; |
44 |
|
45 |
typedef struct ev_watcher *W; |
46 |
typedef struct ev_watcher_list *WL; |
47 |
|
48 |
static ev_tstamp now, diff; /* monotonic clock */ |
49 |
ev_tstamp ev_now; |
50 |
int ev_method; |
51 |
|
52 |
static int have_monotonic; /* runtime */ |
53 |
|
54 |
static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
55 |
static void (*method_modify)(int fd, int oev, int nev); |
56 |
static void (*method_poll)(ev_tstamp timeout); |
57 |
|
58 |
/*****************************************************************************/ |
59 |
|
60 |
ev_tstamp |
61 |
ev_time (void) |
62 |
{ |
63 |
#if HAVE_REALTIME |
64 |
struct timespec ts; |
65 |
clock_gettime (CLOCK_REALTIME, &ts); |
66 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
67 |
#else |
68 |
struct timeval tv; |
69 |
gettimeofday (&tv, 0); |
70 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
71 |
#endif |
72 |
} |
73 |
|
74 |
static ev_tstamp |
75 |
get_clock (void) |
76 |
{ |
77 |
#if HAVE_MONOTONIC |
78 |
if (have_monotonic) |
79 |
{ |
80 |
struct timespec ts; |
81 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
82 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
83 |
} |
84 |
#endif |
85 |
|
86 |
return ev_time (); |
87 |
} |
88 |
|
89 |
#define array_needsize(base,cur,cnt,init) \ |
90 |
if ((cnt) > cur) \ |
91 |
{ \ |
92 |
int newcnt = cur ? cur << 1 : 16; \ |
93 |
fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
94 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
95 |
init (base + cur, newcnt - cur); \ |
96 |
cur = newcnt; \ |
97 |
} |
98 |
|
99 |
/*****************************************************************************/ |
100 |
|
101 |
typedef struct |
102 |
{ |
103 |
struct ev_io *head; |
104 |
unsigned char wev, rev; /* want, received event set */ |
105 |
} ANFD; |
106 |
|
107 |
static ANFD *anfds; |
108 |
static int anfdmax; |
109 |
|
110 |
static int *fdchanges; |
111 |
static int fdchangemax, fdchangecnt; |
112 |
|
113 |
static void |
114 |
anfds_init (ANFD *base, int count) |
115 |
{ |
116 |
while (count--) |
117 |
{ |
118 |
base->head = 0; |
119 |
base->wev = base->rev = EV_NONE; |
120 |
++base; |
121 |
} |
122 |
} |
123 |
|
124 |
typedef struct |
125 |
{ |
126 |
W w; |
127 |
int events; |
128 |
} ANPENDING; |
129 |
|
130 |
static ANPENDING *pendings; |
131 |
static int pendingmax, pendingcnt; |
132 |
|
133 |
static void |
134 |
event (W w, int events) |
135 |
{ |
136 |
w->pending = ++pendingcnt; |
137 |
array_needsize (pendings, pendingmax, pendingcnt, ); |
138 |
pendings [pendingcnt - 1].w = w; |
139 |
pendings [pendingcnt - 1].events = events; |
140 |
} |
141 |
|
142 |
static void |
143 |
fd_event (int fd, int events) |
144 |
{ |
145 |
ANFD *anfd = anfds + fd; |
146 |
struct ev_io *w; |
147 |
|
148 |
for (w = anfd->head; w; w = w->next) |
149 |
{ |
150 |
int ev = w->events & events; |
151 |
|
152 |
if (ev) |
153 |
event ((W)w, ev); |
154 |
} |
155 |
} |
156 |
|
157 |
static void |
158 |
queue_events (W *events, int eventcnt, int type) |
159 |
{ |
160 |
int i; |
161 |
|
162 |
for (i = 0; i < eventcnt; ++i) |
163 |
event (events [i], type); |
164 |
} |
165 |
|
166 |
/*****************************************************************************/ |
167 |
|
168 |
static struct ev_timer **atimers; |
169 |
static int atimermax, atimercnt; |
170 |
|
171 |
static struct ev_timer **rtimers; |
172 |
static int rtimermax, rtimercnt; |
173 |
|
174 |
static void |
175 |
upheap (struct ev_timer **timers, int k) |
176 |
{ |
177 |
struct ev_timer *w = timers [k]; |
178 |
|
179 |
while (k && timers [k >> 1]->at > w->at) |
180 |
{ |
181 |
timers [k] = timers [k >> 1]; |
182 |
timers [k]->active = k + 1; |
183 |
k >>= 1; |
184 |
} |
185 |
|
186 |
timers [k] = w; |
187 |
timers [k]->active = k + 1; |
188 |
|
189 |
} |
190 |
|
191 |
static void |
192 |
downheap (struct ev_timer **timers, int N, int k) |
193 |
{ |
194 |
struct ev_timer *w = timers [k]; |
195 |
|
196 |
while (k < (N >> 1)) |
197 |
{ |
198 |
int j = k << 1; |
199 |
|
200 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
201 |
++j; |
202 |
|
203 |
if (w->at <= timers [j]->at) |
204 |
break; |
205 |
|
206 |
timers [k] = timers [j]; |
207 |
timers [k]->active = k + 1; |
208 |
k = j; |
209 |
} |
210 |
|
211 |
timers [k] = w; |
212 |
timers [k]->active = k + 1; |
213 |
} |
214 |
|
215 |
/*****************************************************************************/ |
216 |
|
217 |
typedef struct |
218 |
{ |
219 |
struct ev_signal *head; |
220 |
sig_atomic_t gotsig; |
221 |
} ANSIG; |
222 |
|
223 |
static ANSIG *signals; |
224 |
static int signalmax; |
225 |
|
226 |
static int sigpipe [2]; |
227 |
static sig_atomic_t gotsig; |
228 |
static struct ev_io sigev; |
229 |
|
230 |
static void |
231 |
signals_init (ANSIG *base, int count) |
232 |
{ |
233 |
while (count--) |
234 |
{ |
235 |
base->head = 0; |
236 |
base->gotsig = 0; |
237 |
++base; |
238 |
} |
239 |
} |
240 |
|
241 |
static void |
242 |
sighandler (int signum) |
243 |
{ |
244 |
signals [signum - 1].gotsig = 1; |
245 |
|
246 |
if (!gotsig) |
247 |
{ |
248 |
gotsig = 1; |
249 |
write (sigpipe [1], &gotsig, 1); |
250 |
} |
251 |
} |
252 |
|
253 |
static void |
254 |
sigcb (struct ev_io *iow, int revents) |
255 |
{ |
256 |
struct ev_signal *w; |
257 |
int sig; |
258 |
|
259 |
gotsig = 0; |
260 |
read (sigpipe [0], &revents, 1); |
261 |
|
262 |
for (sig = signalmax; sig--; ) |
263 |
if (signals [sig].gotsig) |
264 |
{ |
265 |
signals [sig].gotsig = 0; |
266 |
|
267 |
for (w = signals [sig].head; w; w = w->next) |
268 |
event ((W)w, EV_SIGNAL); |
269 |
} |
270 |
} |
271 |
|
272 |
static void |
273 |
siginit (void) |
274 |
{ |
275 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
276 |
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
277 |
|
278 |
/* rather than sort out wether we really need nb, set it */ |
279 |
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
280 |
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
281 |
|
282 |
evio_set (&sigev, sigpipe [0], EV_READ); |
283 |
evio_start (&sigev); |
284 |
} |
285 |
|
286 |
/*****************************************************************************/ |
287 |
|
288 |
static struct ev_idle **idles; |
289 |
static int idlemax, idlecnt; |
290 |
|
291 |
static struct ev_check **checks; |
292 |
static int checkmax, checkcnt; |
293 |
|
294 |
/*****************************************************************************/ |
295 |
|
296 |
#if HAVE_EPOLL |
297 |
# include "ev_epoll.c" |
298 |
#endif |
299 |
#if HAVE_SELECT |
300 |
# include "ev_select.c" |
301 |
#endif |
302 |
|
303 |
int ev_init (int flags) |
304 |
{ |
305 |
#if HAVE_MONOTONIC |
306 |
{ |
307 |
struct timespec ts; |
308 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
309 |
have_monotonic = 1; |
310 |
} |
311 |
#endif |
312 |
|
313 |
ev_now = ev_time (); |
314 |
now = get_clock (); |
315 |
diff = ev_now - now; |
316 |
|
317 |
if (pipe (sigpipe)) |
318 |
return 0; |
319 |
|
320 |
ev_method = EVMETHOD_NONE; |
321 |
#if HAVE_EPOLL |
322 |
if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
323 |
#endif |
324 |
#if HAVE_SELECT |
325 |
if (ev_method == EVMETHOD_NONE) select_init (flags); |
326 |
#endif |
327 |
|
328 |
if (ev_method) |
329 |
{ |
330 |
evw_init (&sigev, sigcb, 0); |
331 |
siginit (); |
332 |
} |
333 |
|
334 |
return ev_method; |
335 |
} |
336 |
|
337 |
/*****************************************************************************/ |
338 |
|
339 |
void ev_prefork (void) |
340 |
{ |
341 |
/* nop */ |
342 |
} |
343 |
|
344 |
void ev_postfork_parent (void) |
345 |
{ |
346 |
/* nop */ |
347 |
} |
348 |
|
349 |
void ev_postfork_child (void) |
350 |
{ |
351 |
#if HAVE_EPOLL |
352 |
if (ev_method == EVMETHOD_EPOLL) |
353 |
epoll_postfork_child (); |
354 |
#endif |
355 |
|
356 |
evio_stop (&sigev); |
357 |
close (sigpipe [0]); |
358 |
close (sigpipe [1]); |
359 |
pipe (sigpipe); |
360 |
siginit (); |
361 |
} |
362 |
|
363 |
/*****************************************************************************/ |
364 |
|
365 |
static void |
366 |
fd_reify (void) |
367 |
{ |
368 |
int i; |
369 |
|
370 |
for (i = 0; i < fdchangecnt; ++i) |
371 |
{ |
372 |
int fd = fdchanges [i]; |
373 |
ANFD *anfd = anfds + fd; |
374 |
struct ev_io *w; |
375 |
|
376 |
int wev = 0; |
377 |
|
378 |
for (w = anfd->head; w; w = w->next) |
379 |
wev |= w->events; |
380 |
|
381 |
if (anfd->wev != wev) |
382 |
{ |
383 |
method_modify (fd, anfd->wev, wev); |
384 |
anfd->wev = wev; |
385 |
} |
386 |
} |
387 |
|
388 |
fdchangecnt = 0; |
389 |
} |
390 |
|
391 |
static void |
392 |
call_pending () |
393 |
{ |
394 |
int i; |
395 |
|
396 |
for (i = 0; i < pendingcnt; ++i) |
397 |
{ |
398 |
ANPENDING *p = pendings + i; |
399 |
|
400 |
if (p->w) |
401 |
{ |
402 |
p->w->pending = 0; |
403 |
p->w->cb (p->w, p->events); |
404 |
} |
405 |
} |
406 |
|
407 |
pendingcnt = 0; |
408 |
} |
409 |
|
410 |
static void |
411 |
timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
412 |
{ |
413 |
while (timercnt && timers [0]->at <= now) |
414 |
{ |
415 |
struct ev_timer *w = timers [0]; |
416 |
|
417 |
/* first reschedule or stop timer */ |
418 |
if (w->repeat) |
419 |
{ |
420 |
if (w->is_abs) |
421 |
w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
422 |
else |
423 |
w->at = now + w->repeat; |
424 |
|
425 |
assert (w->at > now); |
426 |
|
427 |
downheap (timers, timercnt, 0); |
428 |
} |
429 |
else |
430 |
{ |
431 |
evtimer_stop (w); /* nonrepeating: stop timer */ |
432 |
--timercnt; /* maybe pass by reference instead? */ |
433 |
} |
434 |
|
435 |
event ((W)w, EV_TIMEOUT); |
436 |
} |
437 |
} |
438 |
|
439 |
static void |
440 |
time_update () |
441 |
{ |
442 |
int i; |
443 |
ev_now = ev_time (); |
444 |
|
445 |
if (have_monotonic) |
446 |
{ |
447 |
ev_tstamp odiff = diff; |
448 |
|
449 |
/* detecting time jumps is much more difficult */ |
450 |
for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
451 |
{ |
452 |
now = get_clock (); |
453 |
diff = ev_now - now; |
454 |
|
455 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
456 |
return; /* all is well */ |
457 |
|
458 |
ev_now = ev_time (); |
459 |
} |
460 |
|
461 |
/* time jump detected, reschedule atimers */ |
462 |
for (i = 0; i < atimercnt; ++i) |
463 |
{ |
464 |
struct ev_timer *w = atimers [i]; |
465 |
w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
466 |
} |
467 |
} |
468 |
else |
469 |
{ |
470 |
if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
471 |
/* time jump detected, adjust rtimers */ |
472 |
for (i = 0; i < rtimercnt; ++i) |
473 |
rtimers [i]->at += ev_now - now; |
474 |
|
475 |
now = ev_now; |
476 |
} |
477 |
} |
478 |
|
479 |
int ev_loop_done; |
480 |
|
481 |
void ev_loop (int flags) |
482 |
{ |
483 |
double block; |
484 |
ev_loop_done = flags & EVLOOP_ONESHOT; |
485 |
|
486 |
if (checkcnt) |
487 |
{ |
488 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
489 |
call_pending (); |
490 |
} |
491 |
|
492 |
do |
493 |
{ |
494 |
/* update fd-related kernel structures */ |
495 |
fd_reify (); |
496 |
|
497 |
/* calculate blocking time */ |
498 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
499 |
block = 0.; |
500 |
else |
501 |
{ |
502 |
block = MAX_BLOCKTIME; |
503 |
|
504 |
if (rtimercnt) |
505 |
{ |
506 |
ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
507 |
if (block > to) block = to; |
508 |
} |
509 |
|
510 |
if (atimercnt) |
511 |
{ |
512 |
ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
513 |
if (block > to) block = to; |
514 |
} |
515 |
|
516 |
if (block < 0.) block = 0.; |
517 |
} |
518 |
|
519 |
method_poll (block); |
520 |
|
521 |
/* update ev_now, do magic */ |
522 |
time_update (); |
523 |
|
524 |
/* queue pending timers and reschedule them */ |
525 |
/* absolute timers first */ |
526 |
timers_reify (atimers, atimercnt, ev_now); |
527 |
/* relative timers second */ |
528 |
timers_reify (rtimers, rtimercnt, now); |
529 |
|
530 |
/* queue idle watchers unless io or timers are pending */ |
531 |
if (!pendingcnt) |
532 |
queue_events ((W *)idles, idlecnt, EV_IDLE); |
533 |
|
534 |
/* queue check and possibly idle watchers */ |
535 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
536 |
|
537 |
call_pending (); |
538 |
} |
539 |
while (!ev_loop_done); |
540 |
} |
541 |
|
542 |
/*****************************************************************************/ |
543 |
|
544 |
static void |
545 |
wlist_add (WL *head, WL elem) |
546 |
{ |
547 |
elem->next = *head; |
548 |
*head = elem; |
549 |
} |
550 |
|
551 |
static void |
552 |
wlist_del (WL *head, WL elem) |
553 |
{ |
554 |
while (*head) |
555 |
{ |
556 |
if (*head == elem) |
557 |
{ |
558 |
*head = elem->next; |
559 |
return; |
560 |
} |
561 |
|
562 |
head = &(*head)->next; |
563 |
} |
564 |
} |
565 |
|
566 |
static void |
567 |
ev_start (W w, int active) |
568 |
{ |
569 |
w->pending = 0; |
570 |
w->active = active; |
571 |
} |
572 |
|
573 |
static void |
574 |
ev_stop (W w) |
575 |
{ |
576 |
if (w->pending) |
577 |
pendings [w->pending - 1].w = 0; |
578 |
|
579 |
w->active = 0; |
580 |
} |
581 |
|
582 |
/*****************************************************************************/ |
583 |
|
584 |
void |
585 |
evio_start (struct ev_io *w) |
586 |
{ |
587 |
if (ev_is_active (w)) |
588 |
return; |
589 |
|
590 |
int fd = w->fd; |
591 |
|
592 |
ev_start ((W)w, 1); |
593 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
594 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
595 |
|
596 |
++fdchangecnt; |
597 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
598 |
fdchanges [fdchangecnt - 1] = fd; |
599 |
} |
600 |
|
601 |
void |
602 |
evio_stop (struct ev_io *w) |
603 |
{ |
604 |
if (!ev_is_active (w)) |
605 |
return; |
606 |
|
607 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
608 |
ev_stop ((W)w); |
609 |
|
610 |
++fdchangecnt; |
611 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
612 |
fdchanges [fdchangecnt - 1] = w->fd; |
613 |
} |
614 |
|
615 |
void |
616 |
evtimer_start (struct ev_timer *w) |
617 |
{ |
618 |
if (ev_is_active (w)) |
619 |
return; |
620 |
|
621 |
if (w->is_abs) |
622 |
{ |
623 |
/* this formula differs from the one in timer_reify becuse we do not round up */ |
624 |
if (w->repeat) |
625 |
w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
626 |
|
627 |
ev_start ((W)w, ++atimercnt); |
628 |
array_needsize (atimers, atimermax, atimercnt, ); |
629 |
atimers [atimercnt - 1] = w; |
630 |
upheap (atimers, atimercnt - 1); |
631 |
} |
632 |
else |
633 |
{ |
634 |
w->at += now; |
635 |
|
636 |
ev_start ((W)w, ++rtimercnt); |
637 |
array_needsize (rtimers, rtimermax, rtimercnt, ); |
638 |
rtimers [rtimercnt - 1] = w; |
639 |
upheap (rtimers, rtimercnt - 1); |
640 |
} |
641 |
|
642 |
} |
643 |
|
644 |
void |
645 |
evtimer_stop (struct ev_timer *w) |
646 |
{ |
647 |
if (!ev_is_active (w)) |
648 |
return; |
649 |
|
650 |
if (w->is_abs) |
651 |
{ |
652 |
if (w->active < atimercnt--) |
653 |
{ |
654 |
atimers [w->active - 1] = atimers [atimercnt]; |
655 |
downheap (atimers, atimercnt, w->active - 1); |
656 |
} |
657 |
} |
658 |
else |
659 |
{ |
660 |
if (w->active < rtimercnt--) |
661 |
{ |
662 |
rtimers [w->active - 1] = rtimers [rtimercnt]; |
663 |
downheap (rtimers, rtimercnt, w->active - 1); |
664 |
} |
665 |
} |
666 |
|
667 |
ev_stop ((W)w); |
668 |
} |
669 |
|
670 |
void |
671 |
evsignal_start (struct ev_signal *w) |
672 |
{ |
673 |
if (ev_is_active (w)) |
674 |
return; |
675 |
|
676 |
ev_start ((W)w, 1); |
677 |
array_needsize (signals, signalmax, w->signum, signals_init); |
678 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
679 |
|
680 |
if (!w->next) |
681 |
{ |
682 |
struct sigaction sa; |
683 |
sa.sa_handler = sighandler; |
684 |
sigfillset (&sa.sa_mask); |
685 |
sa.sa_flags = 0; |
686 |
sigaction (w->signum, &sa, 0); |
687 |
} |
688 |
} |
689 |
|
690 |
void |
691 |
evsignal_stop (struct ev_signal *w) |
692 |
{ |
693 |
if (!ev_is_active (w)) |
694 |
return; |
695 |
|
696 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
697 |
ev_stop ((W)w); |
698 |
|
699 |
if (!signals [w->signum - 1].head) |
700 |
signal (w->signum, SIG_DFL); |
701 |
} |
702 |
|
703 |
void evidle_start (struct ev_idle *w) |
704 |
{ |
705 |
if (ev_is_active (w)) |
706 |
return; |
707 |
|
708 |
ev_start ((W)w, ++idlecnt); |
709 |
array_needsize (idles, idlemax, idlecnt, ); |
710 |
idles [idlecnt - 1] = w; |
711 |
} |
712 |
|
713 |
void evidle_stop (struct ev_idle *w) |
714 |
{ |
715 |
idles [w->active - 1] = idles [--idlecnt]; |
716 |
ev_stop ((W)w); |
717 |
} |
718 |
|
719 |
void evcheck_start (struct ev_check *w) |
720 |
{ |
721 |
if (ev_is_active (w)) |
722 |
return; |
723 |
|
724 |
ev_start ((W)w, ++checkcnt); |
725 |
array_needsize (checks, checkmax, checkcnt, ); |
726 |
checks [checkcnt - 1] = w; |
727 |
} |
728 |
|
729 |
void evcheck_stop (struct ev_check *w) |
730 |
{ |
731 |
checks [w->active - 1] = checks [--checkcnt]; |
732 |
ev_stop ((W)w); |
733 |
} |
734 |
|
735 |
/*****************************************************************************/ |
736 |
|
737 |
#if 0 |
738 |
|
739 |
static void |
740 |
sin_cb (struct ev_io *w, int revents) |
741 |
{ |
742 |
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
743 |
} |
744 |
|
745 |
static void |
746 |
ocb (struct ev_timer *w, int revents) |
747 |
{ |
748 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
749 |
evtimer_stop (w); |
750 |
evtimer_start (w); |
751 |
} |
752 |
|
753 |
static void |
754 |
scb (struct ev_signal *w, int revents) |
755 |
{ |
756 |
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
757 |
} |
758 |
|
759 |
static void |
760 |
gcb (struct ev_signal *w, int revents) |
761 |
{ |
762 |
fprintf (stderr, "generic %x\n", revents); |
763 |
} |
764 |
|
765 |
int main (void) |
766 |
{ |
767 |
struct ev_io sin; |
768 |
|
769 |
ev_init (0); |
770 |
|
771 |
evw_init (&sin, sin_cb, 55); |
772 |
evio_set (&sin, 0, EV_READ); |
773 |
evio_start (&sin); |
774 |
|
775 |
struct ev_timer t[10000]; |
776 |
|
777 |
#if 0 |
778 |
int i; |
779 |
for (i = 0; i < 10000; ++i) |
780 |
{ |
781 |
struct ev_timer *w = t + i; |
782 |
evw_init (w, ocb, i); |
783 |
evtimer_set_abs (w, drand48 (), 0.99775533); |
784 |
evtimer_start (w); |
785 |
if (drand48 () < 0.5) |
786 |
evtimer_stop (w); |
787 |
} |
788 |
#endif |
789 |
|
790 |
struct ev_timer t1; |
791 |
evw_init (&t1, ocb, 0); |
792 |
evtimer_set_abs (&t1, 5, 10); |
793 |
evtimer_start (&t1); |
794 |
|
795 |
struct ev_signal sig; |
796 |
evw_init (&sig, scb, 65535); |
797 |
evsignal_set (&sig, SIGQUIT); |
798 |
evsignal_start (&sig); |
799 |
|
800 |
struct ev_check cw; |
801 |
evw_init (&cw, gcb, 0); |
802 |
evcheck_start (&cw); |
803 |
|
804 |
struct ev_idle iw; |
805 |
evw_init (&iw, gcb, 0); |
806 |
evidle_start (&iw); |
807 |
|
808 |
ev_loop (0); |
809 |
|
810 |
return 0; |
811 |
} |
812 |
|
813 |
#endif |
814 |
|
815 |
|
816 |
|
817 |
|