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 |
#define HAVE_EPOLL 1 |
15 |
|
16 |
#ifndef HAVE_MONOTONIC |
17 |
# ifdef CLOCK_MONOTONIC |
18 |
# define HAVE_MONOTONIC 1 |
19 |
# endif |
20 |
#endif |
21 |
|
22 |
#ifndef HAVE_SELECT |
23 |
# define HAVE_SELECT 1 |
24 |
#endif |
25 |
|
26 |
#ifndef HAVE_EPOLL |
27 |
# define HAVE_EPOLL 0 |
28 |
#endif |
29 |
|
30 |
#ifndef HAVE_REALTIME |
31 |
# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
32 |
#endif |
33 |
|
34 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 |
#define MAX_BLOCKTIME 60. |
36 |
|
37 |
#include "ev.h" |
38 |
|
39 |
struct ev_watcher { |
40 |
EV_WATCHER (ev_watcher); |
41 |
}; |
42 |
|
43 |
struct ev_watcher_list { |
44 |
EV_WATCHER_LIST (ev_watcher_list); |
45 |
}; |
46 |
|
47 |
struct ev_watcher_time { |
48 |
EV_WATCHER_TIME (ev_watcher_time); |
49 |
}; |
50 |
|
51 |
typedef struct ev_watcher *W; |
52 |
typedef struct ev_watcher_list *WL; |
53 |
typedef struct ev_watcher_time *WT; |
54 |
|
55 |
static ev_tstamp now, diff; /* monotonic clock */ |
56 |
ev_tstamp ev_now; |
57 |
int ev_method; |
58 |
|
59 |
static int have_monotonic; /* runtime */ |
60 |
|
61 |
static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
62 |
static void (*method_modify)(int fd, int oev, int nev); |
63 |
static void (*method_poll)(ev_tstamp timeout); |
64 |
|
65 |
/*****************************************************************************/ |
66 |
|
67 |
ev_tstamp |
68 |
ev_time (void) |
69 |
{ |
70 |
#if HAVE_REALTIME |
71 |
struct timespec ts; |
72 |
clock_gettime (CLOCK_REALTIME, &ts); |
73 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
74 |
#else |
75 |
struct timeval tv; |
76 |
gettimeofday (&tv, 0); |
77 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
78 |
#endif |
79 |
} |
80 |
|
81 |
static ev_tstamp |
82 |
get_clock (void) |
83 |
{ |
84 |
#if HAVE_MONOTONIC |
85 |
if (have_monotonic) |
86 |
{ |
87 |
struct timespec ts; |
88 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
89 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 |
} |
91 |
#endif |
92 |
|
93 |
return ev_time (); |
94 |
} |
95 |
|
96 |
#define array_needsize(base,cur,cnt,init) \ |
97 |
if ((cnt) > cur) \ |
98 |
{ \ |
99 |
int newcnt = cur ? cur << 1 : 16; \ |
100 |
fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
101 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
102 |
init (base + cur, newcnt - cur); \ |
103 |
cur = newcnt; \ |
104 |
} |
105 |
|
106 |
/*****************************************************************************/ |
107 |
|
108 |
typedef struct |
109 |
{ |
110 |
struct ev_io *head; |
111 |
unsigned char wev, rev; /* want, received event set */ |
112 |
} ANFD; |
113 |
|
114 |
static ANFD *anfds; |
115 |
static int anfdmax; |
116 |
|
117 |
static int *fdchanges; |
118 |
static int fdchangemax, fdchangecnt; |
119 |
|
120 |
static void |
121 |
anfds_init (ANFD *base, int count) |
122 |
{ |
123 |
while (count--) |
124 |
{ |
125 |
base->head = 0; |
126 |
base->wev = base->rev = EV_NONE; |
127 |
++base; |
128 |
} |
129 |
} |
130 |
|
131 |
typedef struct |
132 |
{ |
133 |
W w; |
134 |
int events; |
135 |
} ANPENDING; |
136 |
|
137 |
static ANPENDING *pendings; |
138 |
static int pendingmax, pendingcnt; |
139 |
|
140 |
static void |
141 |
event (W w, int events) |
142 |
{ |
143 |
w->pending = ++pendingcnt; |
144 |
array_needsize (pendings, pendingmax, pendingcnt, ); |
145 |
pendings [pendingcnt - 1].w = w; |
146 |
pendings [pendingcnt - 1].events = events; |
147 |
} |
148 |
|
149 |
static void |
150 |
fd_event (int fd, int events) |
151 |
{ |
152 |
ANFD *anfd = anfds + fd; |
153 |
struct ev_io *w; |
154 |
|
155 |
for (w = anfd->head; w; w = w->next) |
156 |
{ |
157 |
int ev = w->events & events; |
158 |
|
159 |
if (ev) |
160 |
event ((W)w, ev); |
161 |
} |
162 |
} |
163 |
|
164 |
static void |
165 |
queue_events (W *events, int eventcnt, int type) |
166 |
{ |
167 |
int i; |
168 |
|
169 |
for (i = 0; i < eventcnt; ++i) |
170 |
event (events [i], type); |
171 |
} |
172 |
|
173 |
/*****************************************************************************/ |
174 |
|
175 |
static struct ev_timer **timers; |
176 |
static int timermax, timercnt; |
177 |
|
178 |
static struct ev_periodic **periodics; |
179 |
static int periodicmax, periodiccnt; |
180 |
|
181 |
static void |
182 |
upheap (WT *timers, int k) |
183 |
{ |
184 |
WT w = timers [k]; |
185 |
|
186 |
while (k && timers [k >> 1]->at > w->at) |
187 |
{ |
188 |
timers [k] = timers [k >> 1]; |
189 |
timers [k]->active = k + 1; |
190 |
k >>= 1; |
191 |
} |
192 |
|
193 |
timers [k] = w; |
194 |
timers [k]->active = k + 1; |
195 |
|
196 |
} |
197 |
|
198 |
static void |
199 |
downheap (WT *timers, int N, int k) |
200 |
{ |
201 |
WT w = timers [k]; |
202 |
|
203 |
while (k < (N >> 1)) |
204 |
{ |
205 |
int j = k << 1; |
206 |
|
207 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
208 |
++j; |
209 |
|
210 |
if (w->at <= timers [j]->at) |
211 |
break; |
212 |
|
213 |
timers [k] = timers [j]; |
214 |
timers [k]->active = k + 1; |
215 |
k = j; |
216 |
} |
217 |
|
218 |
timers [k] = w; |
219 |
timers [k]->active = k + 1; |
220 |
} |
221 |
|
222 |
/*****************************************************************************/ |
223 |
|
224 |
typedef struct |
225 |
{ |
226 |
struct ev_signal *head; |
227 |
sig_atomic_t gotsig; |
228 |
} ANSIG; |
229 |
|
230 |
static ANSIG *signals; |
231 |
static int signalmax; |
232 |
|
233 |
static int sigpipe [2]; |
234 |
static sig_atomic_t gotsig; |
235 |
static struct ev_io sigev; |
236 |
|
237 |
static void |
238 |
signals_init (ANSIG *base, int count) |
239 |
{ |
240 |
while (count--) |
241 |
{ |
242 |
base->head = 0; |
243 |
base->gotsig = 0; |
244 |
++base; |
245 |
} |
246 |
} |
247 |
|
248 |
static void |
249 |
sighandler (int signum) |
250 |
{ |
251 |
signals [signum - 1].gotsig = 1; |
252 |
|
253 |
if (!gotsig) |
254 |
{ |
255 |
gotsig = 1; |
256 |
write (sigpipe [1], &gotsig, 1); |
257 |
} |
258 |
} |
259 |
|
260 |
static void |
261 |
sigcb (struct ev_io *iow, int revents) |
262 |
{ |
263 |
struct ev_signal *w; |
264 |
int sig; |
265 |
|
266 |
gotsig = 0; |
267 |
read (sigpipe [0], &revents, 1); |
268 |
|
269 |
for (sig = signalmax; sig--; ) |
270 |
if (signals [sig].gotsig) |
271 |
{ |
272 |
signals [sig].gotsig = 0; |
273 |
|
274 |
for (w = signals [sig].head; w; w = w->next) |
275 |
event ((W)w, EV_SIGNAL); |
276 |
} |
277 |
} |
278 |
|
279 |
static void |
280 |
siginit (void) |
281 |
{ |
282 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
283 |
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
284 |
|
285 |
/* rather than sort out wether we really need nb, set it */ |
286 |
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
287 |
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
288 |
|
289 |
evio_set (&sigev, sigpipe [0], EV_READ); |
290 |
evio_start (&sigev); |
291 |
} |
292 |
|
293 |
/*****************************************************************************/ |
294 |
|
295 |
static struct ev_idle **idles; |
296 |
static int idlemax, idlecnt; |
297 |
|
298 |
static struct ev_check **checks; |
299 |
static int checkmax, checkcnt; |
300 |
|
301 |
/*****************************************************************************/ |
302 |
|
303 |
#if HAVE_EPOLL |
304 |
# include "ev_epoll.c" |
305 |
#endif |
306 |
#if HAVE_SELECT |
307 |
# include "ev_select.c" |
308 |
#endif |
309 |
|
310 |
int ev_init (int flags) |
311 |
{ |
312 |
#if HAVE_MONOTONIC |
313 |
{ |
314 |
struct timespec ts; |
315 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
316 |
have_monotonic = 1; |
317 |
} |
318 |
#endif |
319 |
|
320 |
ev_now = ev_time (); |
321 |
now = get_clock (); |
322 |
diff = ev_now - now; |
323 |
|
324 |
if (pipe (sigpipe)) |
325 |
return 0; |
326 |
|
327 |
ev_method = EVMETHOD_NONE; |
328 |
#if HAVE_EPOLL |
329 |
if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
330 |
#endif |
331 |
#if HAVE_SELECT |
332 |
if (ev_method == EVMETHOD_NONE) select_init (flags); |
333 |
#endif |
334 |
|
335 |
if (ev_method) |
336 |
{ |
337 |
evw_init (&sigev, sigcb); |
338 |
siginit (); |
339 |
} |
340 |
|
341 |
return ev_method; |
342 |
} |
343 |
|
344 |
/*****************************************************************************/ |
345 |
|
346 |
void ev_prefork (void) |
347 |
{ |
348 |
/* nop */ |
349 |
} |
350 |
|
351 |
void ev_postfork_parent (void) |
352 |
{ |
353 |
/* nop */ |
354 |
} |
355 |
|
356 |
void ev_postfork_child (void) |
357 |
{ |
358 |
#if HAVE_EPOLL |
359 |
if (ev_method == EVMETHOD_EPOLL) |
360 |
epoll_postfork_child (); |
361 |
#endif |
362 |
|
363 |
evio_stop (&sigev); |
364 |
close (sigpipe [0]); |
365 |
close (sigpipe [1]); |
366 |
pipe (sigpipe); |
367 |
siginit (); |
368 |
} |
369 |
|
370 |
/*****************************************************************************/ |
371 |
|
372 |
static void |
373 |
fd_reify (void) |
374 |
{ |
375 |
int i; |
376 |
|
377 |
for (i = 0; i < fdchangecnt; ++i) |
378 |
{ |
379 |
int fd = fdchanges [i]; |
380 |
ANFD *anfd = anfds + fd; |
381 |
struct ev_io *w; |
382 |
|
383 |
int wev = 0; |
384 |
|
385 |
for (w = anfd->head; w; w = w->next) |
386 |
wev |= w->events; |
387 |
|
388 |
if (anfd->wev != wev) |
389 |
{ |
390 |
method_modify (fd, anfd->wev, wev); |
391 |
anfd->wev = wev; |
392 |
} |
393 |
} |
394 |
|
395 |
fdchangecnt = 0; |
396 |
} |
397 |
|
398 |
static void |
399 |
call_pending () |
400 |
{ |
401 |
int i; |
402 |
|
403 |
for (i = 0; i < pendingcnt; ++i) |
404 |
{ |
405 |
ANPENDING *p = pendings + i; |
406 |
|
407 |
if (p->w) |
408 |
{ |
409 |
p->w->pending = 0; |
410 |
p->w->cb (p->w, p->events); |
411 |
} |
412 |
} |
413 |
|
414 |
pendingcnt = 0; |
415 |
} |
416 |
|
417 |
static void |
418 |
timers_reify () |
419 |
{ |
420 |
while (timercnt && timers [0]->at <= now) |
421 |
{ |
422 |
struct ev_timer *w = timers [0]; |
423 |
|
424 |
/* first reschedule or stop timer */ |
425 |
if (w->repeat) |
426 |
{ |
427 |
w->at = now + w->repeat; |
428 |
assert (("timer timeout in the past, negative repeat?", w->at > now)); |
429 |
downheap ((WT *)timers, timercnt, 0); |
430 |
} |
431 |
else |
432 |
evtimer_stop (w); /* nonrepeating: stop timer */ |
433 |
|
434 |
event ((W)w, EV_TIMEOUT); |
435 |
} |
436 |
} |
437 |
|
438 |
static void |
439 |
periodics_reify () |
440 |
{ |
441 |
while (periodiccnt && periodics [0]->at <= ev_now) |
442 |
{ |
443 |
struct ev_periodic *w = periodics [0]; |
444 |
|
445 |
/* first reschedule or stop timer */ |
446 |
if (w->interval) |
447 |
{ |
448 |
w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
449 |
assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
450 |
downheap ((WT *)periodics, periodiccnt, 0); |
451 |
} |
452 |
else |
453 |
evperiodic_stop (w); /* nonrepeating: stop timer */ |
454 |
|
455 |
event ((W)w, EV_TIMEOUT); |
456 |
} |
457 |
} |
458 |
|
459 |
static void |
460 |
time_jump (ev_tstamp diff) |
461 |
{ |
462 |
int i; |
463 |
|
464 |
/* adjust periodics */ |
465 |
for (i = 0; i < periodiccnt; ++i) |
466 |
{ |
467 |
struct ev_periodic *w = periodics [i]; |
468 |
|
469 |
if (w->interval) |
470 |
{ |
471 |
ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
472 |
|
473 |
if (fabs (diff) >= 1e-4) |
474 |
{ |
475 |
evperiodic_stop (w); |
476 |
evperiodic_start (w); |
477 |
|
478 |
i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
479 |
} |
480 |
} |
481 |
} |
482 |
|
483 |
/* adjust timers. this is easy, as the offset is the same for all */ |
484 |
for (i = 0; i < timercnt; ++i) |
485 |
timers [i]->at += diff; |
486 |
} |
487 |
|
488 |
static void |
489 |
time_update () |
490 |
{ |
491 |
int i; |
492 |
|
493 |
ev_now = ev_time (); |
494 |
|
495 |
if (have_monotonic) |
496 |
{ |
497 |
ev_tstamp odiff = diff; |
498 |
|
499 |
for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
500 |
{ |
501 |
now = get_clock (); |
502 |
diff = ev_now - now; |
503 |
|
504 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
505 |
return; /* all is well */ |
506 |
|
507 |
ev_now = ev_time (); |
508 |
} |
509 |
|
510 |
time_jump (diff - odiff); |
511 |
} |
512 |
else |
513 |
{ |
514 |
if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
515 |
time_jump (ev_now - now); |
516 |
|
517 |
now = ev_now; |
518 |
} |
519 |
} |
520 |
|
521 |
int ev_loop_done; |
522 |
|
523 |
void ev_loop (int flags) |
524 |
{ |
525 |
double block; |
526 |
ev_loop_done = flags & EVLOOP_ONESHOT; |
527 |
|
528 |
if (checkcnt) |
529 |
{ |
530 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
531 |
call_pending (); |
532 |
} |
533 |
|
534 |
do |
535 |
{ |
536 |
/* update fd-related kernel structures */ |
537 |
fd_reify (); |
538 |
|
539 |
/* calculate blocking time */ |
540 |
|
541 |
/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
542 |
ev_now = ev_time (); |
543 |
|
544 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
545 |
block = 0.; |
546 |
else |
547 |
{ |
548 |
block = MAX_BLOCKTIME; |
549 |
|
550 |
if (timercnt) |
551 |
{ |
552 |
ev_tstamp to = timers [0]->at - get_clock () + method_fudge; |
553 |
if (block > to) block = to; |
554 |
} |
555 |
|
556 |
if (periodiccnt) |
557 |
{ |
558 |
ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
559 |
if (block > to) block = to; |
560 |
} |
561 |
|
562 |
if (block < 0.) block = 0.; |
563 |
} |
564 |
|
565 |
method_poll (block); |
566 |
|
567 |
/* update ev_now, do magic */ |
568 |
time_update (); |
569 |
|
570 |
/* queue pending timers and reschedule them */ |
571 |
periodics_reify (); /* absolute timers first */ |
572 |
timers_reify (); /* relative timers second */ |
573 |
|
574 |
/* queue idle watchers unless io or timers are pending */ |
575 |
if (!pendingcnt) |
576 |
queue_events ((W *)idles, idlecnt, EV_IDLE); |
577 |
|
578 |
/* queue check and possibly idle watchers */ |
579 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
580 |
|
581 |
call_pending (); |
582 |
} |
583 |
while (!ev_loop_done); |
584 |
} |
585 |
|
586 |
/*****************************************************************************/ |
587 |
|
588 |
static void |
589 |
wlist_add (WL *head, WL elem) |
590 |
{ |
591 |
elem->next = *head; |
592 |
*head = elem; |
593 |
} |
594 |
|
595 |
static void |
596 |
wlist_del (WL *head, WL elem) |
597 |
{ |
598 |
while (*head) |
599 |
{ |
600 |
if (*head == elem) |
601 |
{ |
602 |
*head = elem->next; |
603 |
return; |
604 |
} |
605 |
|
606 |
head = &(*head)->next; |
607 |
} |
608 |
} |
609 |
|
610 |
static void |
611 |
ev_start (W w, int active) |
612 |
{ |
613 |
w->pending = 0; |
614 |
w->active = active; |
615 |
} |
616 |
|
617 |
static void |
618 |
ev_stop (W w) |
619 |
{ |
620 |
if (w->pending) |
621 |
pendings [w->pending - 1].w = 0; |
622 |
|
623 |
w->active = 0; |
624 |
} |
625 |
|
626 |
/*****************************************************************************/ |
627 |
|
628 |
void |
629 |
evio_start (struct ev_io *w) |
630 |
{ |
631 |
if (ev_is_active (w)) |
632 |
return; |
633 |
|
634 |
int fd = w->fd; |
635 |
|
636 |
ev_start ((W)w, 1); |
637 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
638 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
639 |
|
640 |
++fdchangecnt; |
641 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
642 |
fdchanges [fdchangecnt - 1] = fd; |
643 |
} |
644 |
|
645 |
void |
646 |
evio_stop (struct ev_io *w) |
647 |
{ |
648 |
if (!ev_is_active (w)) |
649 |
return; |
650 |
|
651 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
652 |
ev_stop ((W)w); |
653 |
|
654 |
++fdchangecnt; |
655 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
656 |
fdchanges [fdchangecnt - 1] = w->fd; |
657 |
} |
658 |
|
659 |
|
660 |
void |
661 |
evtimer_start (struct ev_timer *w) |
662 |
{ |
663 |
if (ev_is_active (w)) |
664 |
return; |
665 |
|
666 |
w->at += now; |
667 |
|
668 |
ev_start ((W)w, ++timercnt); |
669 |
array_needsize (timers, timermax, timercnt, ); |
670 |
timers [timercnt - 1] = w; |
671 |
upheap ((WT *)timers, timercnt - 1); |
672 |
} |
673 |
|
674 |
void |
675 |
evtimer_stop (struct ev_timer *w) |
676 |
{ |
677 |
if (!ev_is_active (w)) |
678 |
return; |
679 |
|
680 |
if (w->active < timercnt--) |
681 |
{ |
682 |
timers [w->active - 1] = timers [timercnt]; |
683 |
downheap ((WT *)timers, timercnt, w->active - 1); |
684 |
} |
685 |
|
686 |
ev_stop ((W)w); |
687 |
} |
688 |
|
689 |
void |
690 |
evperiodic_start (struct ev_periodic *w) |
691 |
{ |
692 |
if (ev_is_active (w)) |
693 |
return; |
694 |
|
695 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
696 |
if (w->interval) |
697 |
w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
698 |
|
699 |
ev_start ((W)w, ++periodiccnt); |
700 |
array_needsize (periodics, periodicmax, periodiccnt, ); |
701 |
periodics [periodiccnt - 1] = w; |
702 |
upheap ((WT *)periodics, periodiccnt - 1); |
703 |
} |
704 |
|
705 |
void |
706 |
evperiodic_stop (struct ev_periodic *w) |
707 |
{ |
708 |
if (!ev_is_active (w)) |
709 |
return; |
710 |
|
711 |
if (w->active < periodiccnt--) |
712 |
{ |
713 |
periodics [w->active - 1] = periodics [periodiccnt]; |
714 |
downheap ((WT *)periodics, periodiccnt, w->active - 1); |
715 |
} |
716 |
|
717 |
ev_stop ((W)w); |
718 |
} |
719 |
|
720 |
void |
721 |
evsignal_start (struct ev_signal *w) |
722 |
{ |
723 |
if (ev_is_active (w)) |
724 |
return; |
725 |
|
726 |
ev_start ((W)w, 1); |
727 |
array_needsize (signals, signalmax, w->signum, signals_init); |
728 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
729 |
|
730 |
if (!w->next) |
731 |
{ |
732 |
struct sigaction sa; |
733 |
sa.sa_handler = sighandler; |
734 |
sigfillset (&sa.sa_mask); |
735 |
sa.sa_flags = 0; |
736 |
sigaction (w->signum, &sa, 0); |
737 |
} |
738 |
} |
739 |
|
740 |
void |
741 |
evsignal_stop (struct ev_signal *w) |
742 |
{ |
743 |
if (!ev_is_active (w)) |
744 |
return; |
745 |
|
746 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
747 |
ev_stop ((W)w); |
748 |
|
749 |
if (!signals [w->signum - 1].head) |
750 |
signal (w->signum, SIG_DFL); |
751 |
} |
752 |
|
753 |
void evidle_start (struct ev_idle *w) |
754 |
{ |
755 |
if (ev_is_active (w)) |
756 |
return; |
757 |
|
758 |
ev_start ((W)w, ++idlecnt); |
759 |
array_needsize (idles, idlemax, idlecnt, ); |
760 |
idles [idlecnt - 1] = w; |
761 |
} |
762 |
|
763 |
void evidle_stop (struct ev_idle *w) |
764 |
{ |
765 |
idles [w->active - 1] = idles [--idlecnt]; |
766 |
ev_stop ((W)w); |
767 |
} |
768 |
|
769 |
void evcheck_start (struct ev_check *w) |
770 |
{ |
771 |
if (ev_is_active (w)) |
772 |
return; |
773 |
|
774 |
ev_start ((W)w, ++checkcnt); |
775 |
array_needsize (checks, checkmax, checkcnt, ); |
776 |
checks [checkcnt - 1] = w; |
777 |
} |
778 |
|
779 |
void evcheck_stop (struct ev_check *w) |
780 |
{ |
781 |
checks [w->active - 1] = checks [--checkcnt]; |
782 |
ev_stop ((W)w); |
783 |
} |
784 |
|
785 |
/*****************************************************************************/ |
786 |
|
787 |
#if 1 |
788 |
|
789 |
struct ev_io wio; |
790 |
|
791 |
static void |
792 |
sin_cb (struct ev_io *w, int revents) |
793 |
{ |
794 |
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
795 |
} |
796 |
|
797 |
static void |
798 |
ocb (struct ev_timer *w, int revents) |
799 |
{ |
800 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
801 |
evtimer_stop (w); |
802 |
evtimer_start (w); |
803 |
} |
804 |
|
805 |
static void |
806 |
scb (struct ev_signal *w, int revents) |
807 |
{ |
808 |
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
809 |
evio_stop (&wio); |
810 |
evio_start (&wio); |
811 |
} |
812 |
|
813 |
static void |
814 |
gcb (struct ev_signal *w, int revents) |
815 |
{ |
816 |
fprintf (stderr, "generic %x\n", revents); |
817 |
|
818 |
} |
819 |
|
820 |
int main (void) |
821 |
{ |
822 |
ev_init (0); |
823 |
|
824 |
evio_init (&wio, sin_cb, 0, EV_READ); |
825 |
evio_start (&wio); |
826 |
|
827 |
struct ev_timer t[10000]; |
828 |
|
829 |
#if 0 |
830 |
int i; |
831 |
for (i = 0; i < 10000; ++i) |
832 |
{ |
833 |
struct ev_timer *w = t + i; |
834 |
evw_init (w, ocb, i); |
835 |
evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
836 |
evtimer_start (w); |
837 |
if (drand48 () < 0.5) |
838 |
evtimer_stop (w); |
839 |
} |
840 |
#endif |
841 |
|
842 |
struct ev_timer t1; |
843 |
evtimer_init (&t1, ocb, 5, 10); |
844 |
evtimer_start (&t1); |
845 |
|
846 |
struct ev_signal sig; |
847 |
evsignal_init (&sig, scb, SIGQUIT); |
848 |
evsignal_start (&sig); |
849 |
|
850 |
struct ev_check cw; |
851 |
evcheck_init (&cw, gcb); |
852 |
evcheck_start (&cw); |
853 |
|
854 |
struct ev_idle iw; |
855 |
evidle_init (&iw, gcb); |
856 |
evidle_start (&iw); |
857 |
|
858 |
ev_loop (0); |
859 |
|
860 |
return 0; |
861 |
} |
862 |
|
863 |
#endif |
864 |
|
865 |
|
866 |
|
867 |
|