|
|
1 | /* |
|
|
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
|
|
3 | * All rights reserved. |
|
|
4 | * |
|
|
5 | * Redistribution and use in source and binary forms, with or without |
|
|
6 | * modification, are permitted provided that the following conditions are |
|
|
7 | * met: |
|
|
8 | * |
|
|
9 | * * Redistributions of source code must retain the above copyright |
|
|
10 | * notice, this list of conditions and the following disclaimer. |
|
|
11 | * |
|
|
12 | * * Redistributions in binary form must reproduce the above |
|
|
13 | * copyright notice, this list of conditions and the following |
|
|
14 | * disclaimer in the documentation and/or other materials provided |
|
|
15 | * with the distribution. |
|
|
16 | * |
|
|
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
|
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
|
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
|
20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
|
21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
|
23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
|
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
|
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
|
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
|
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
28 | */ |
|
|
29 | |
1 | #include <math.h> |
30 | #include <math.h> |
2 | #include <stdlib.h> |
31 | #include <stdlib.h> |
3 | #include <unistd.h> |
32 | #include <unistd.h> |
4 | #include <fcntl.h> |
33 | #include <fcntl.h> |
5 | #include <signal.h> |
34 | #include <signal.h> |
… | |
… | |
7 | |
36 | |
8 | #include <stdio.h> |
37 | #include <stdio.h> |
9 | |
38 | |
10 | #include <assert.h> |
39 | #include <assert.h> |
11 | #include <errno.h> |
40 | #include <errno.h> |
|
|
41 | #include <sys/types.h> |
|
|
42 | #include <sys/wait.h> |
12 | #include <sys/time.h> |
43 | #include <sys/time.h> |
13 | #include <time.h> |
44 | #include <time.h> |
14 | |
|
|
15 | #define HAVE_EPOLL 1 |
|
|
16 | |
45 | |
17 | #ifndef HAVE_MONOTONIC |
46 | #ifndef HAVE_MONOTONIC |
18 | # ifdef CLOCK_MONOTONIC |
47 | # ifdef CLOCK_MONOTONIC |
19 | # define HAVE_MONOTONIC 1 |
48 | # define HAVE_MONOTONIC 1 |
20 | # endif |
49 | # endif |
… | |
… | |
32 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
33 | #endif |
62 | #endif |
34 | |
63 | |
35 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
36 | #define MAX_BLOCKTIME 60. |
65 | #define MAX_BLOCKTIME 60. |
|
|
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
37 | |
67 | |
38 | #include "ev.h" |
68 | #include "ev.h" |
39 | |
69 | |
40 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher *W; |
41 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_list *WL; |
… | |
… | |
83 | } |
113 | } |
84 | |
114 | |
85 | #define array_needsize(base,cur,cnt,init) \ |
115 | #define array_needsize(base,cur,cnt,init) \ |
86 | if ((cnt) > cur) \ |
116 | if ((cnt) > cur) \ |
87 | { \ |
117 | { \ |
88 | int newcnt = cur ? cur << 1 : 16; \ |
118 | int newcnt = cur; \ |
|
|
119 | do \ |
|
|
120 | { \ |
|
|
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
|
|
122 | } \ |
|
|
123 | while ((cnt) > newcnt); \ |
|
|
124 | \ |
89 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
90 | init (base + cur, newcnt - cur); \ |
126 | init (base + cur, newcnt - cur); \ |
91 | cur = newcnt; \ |
127 | cur = newcnt; \ |
92 | } |
128 | } |
93 | |
129 | |
94 | /*****************************************************************************/ |
130 | /*****************************************************************************/ |
95 | |
131 | |
96 | typedef struct |
132 | typedef struct |
97 | { |
133 | { |
98 | struct ev_io *head; |
134 | struct ev_io *head; |
99 | unsigned char wev, rev; /* want, received event set */ |
135 | int events; |
100 | } ANFD; |
136 | } ANFD; |
101 | |
137 | |
102 | static ANFD *anfds; |
138 | static ANFD *anfds; |
103 | static int anfdmax; |
139 | static int anfdmax; |
104 | |
140 | |
105 | static int *fdchanges; |
|
|
106 | static int fdchangemax, fdchangecnt; |
|
|
107 | |
|
|
108 | static void |
141 | static void |
109 | anfds_init (ANFD *base, int count) |
142 | anfds_init (ANFD *base, int count) |
110 | { |
143 | { |
111 | while (count--) |
144 | while (count--) |
112 | { |
145 | { |
113 | base->head = 0; |
146 | base->head = 0; |
114 | base->wev = base->rev = EV_NONE; |
147 | base->events = EV_NONE; |
115 | ++base; |
148 | ++base; |
116 | } |
149 | } |
117 | } |
150 | } |
118 | |
151 | |
119 | typedef struct |
152 | typedef struct |
… | |
… | |
136 | pendings [pendingcnt - 1].events = events; |
169 | pendings [pendingcnt - 1].events = events; |
137 | } |
170 | } |
138 | } |
171 | } |
139 | |
172 | |
140 | static void |
173 | static void |
|
|
174 | queue_events (W *events, int eventcnt, int type) |
|
|
175 | { |
|
|
176 | int i; |
|
|
177 | |
|
|
178 | for (i = 0; i < eventcnt; ++i) |
|
|
179 | event (events [i], type); |
|
|
180 | } |
|
|
181 | |
|
|
182 | static void |
141 | fd_event (int fd, int events) |
183 | fd_event (int fd, int events) |
142 | { |
184 | { |
143 | ANFD *anfd = anfds + fd; |
185 | ANFD *anfd = anfds + fd; |
144 | struct ev_io *w; |
186 | struct ev_io *w; |
145 | |
187 | |
… | |
… | |
150 | if (ev) |
192 | if (ev) |
151 | event ((W)w, ev); |
193 | event ((W)w, ev); |
152 | } |
194 | } |
153 | } |
195 | } |
154 | |
196 | |
|
|
197 | /*****************************************************************************/ |
|
|
198 | |
|
|
199 | static int *fdchanges; |
|
|
200 | static int fdchangemax, fdchangecnt; |
|
|
201 | |
155 | static void |
202 | static void |
156 | queue_events (W *events, int eventcnt, int type) |
203 | fd_reify (void) |
157 | { |
204 | { |
158 | int i; |
205 | int i; |
159 | |
206 | |
160 | for (i = 0; i < eventcnt; ++i) |
207 | for (i = 0; i < fdchangecnt; ++i) |
161 | event (events [i], type); |
208 | { |
|
|
209 | int fd = fdchanges [i]; |
|
|
210 | ANFD *anfd = anfds + fd; |
|
|
211 | struct ev_io *w; |
|
|
212 | |
|
|
213 | int events = 0; |
|
|
214 | |
|
|
215 | for (w = anfd->head; w; w = w->next) |
|
|
216 | events |= w->events; |
|
|
217 | |
|
|
218 | anfd->events &= ~EV_REIFY; |
|
|
219 | |
|
|
220 | if (anfd->events != events) |
|
|
221 | { |
|
|
222 | method_modify (fd, anfd->events, events); |
|
|
223 | anfd->events = events; |
|
|
224 | } |
|
|
225 | } |
|
|
226 | |
|
|
227 | fdchangecnt = 0; |
|
|
228 | } |
|
|
229 | |
|
|
230 | static void |
|
|
231 | fd_change (int fd) |
|
|
232 | { |
|
|
233 | if (anfds [fd].events & EV_REIFY) |
|
|
234 | return; |
|
|
235 | |
|
|
236 | anfds [fd].events |= EV_REIFY; |
|
|
237 | |
|
|
238 | ++fdchangecnt; |
|
|
239 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
240 | fdchanges [fdchangecnt - 1] = fd; |
|
|
241 | } |
|
|
242 | |
|
|
243 | /* called on EBADF to verify fds */ |
|
|
244 | static void |
|
|
245 | fd_recheck (void) |
|
|
246 | { |
|
|
247 | int fd; |
|
|
248 | |
|
|
249 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
250 | if (anfds [fd].events) |
|
|
251 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
|
|
252 | while (anfds [fd].head) |
|
|
253 | { |
|
|
254 | event ((W)anfds [fd].head, EV_ERROR); |
|
|
255 | ev_io_stop (anfds [fd].head); |
|
|
256 | } |
162 | } |
257 | } |
163 | |
258 | |
164 | /*****************************************************************************/ |
259 | /*****************************************************************************/ |
165 | |
260 | |
166 | static struct ev_timer **timers; |
261 | static struct ev_timer **timers; |
… | |
… | |
275 | |
370 | |
276 | /* rather than sort out wether we really need nb, set it */ |
371 | /* rather than sort out wether we really need nb, set it */ |
277 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
372 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
278 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
373 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
279 | |
374 | |
280 | evio_set (&sigev, sigpipe [0], EV_READ); |
375 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
281 | evio_start (&sigev); |
376 | ev_io_start (&sigev); |
282 | } |
377 | } |
283 | |
378 | |
284 | /*****************************************************************************/ |
379 | /*****************************************************************************/ |
285 | |
380 | |
286 | static struct ev_idle **idles; |
381 | static struct ev_idle **idles; |
287 | static int idlemax, idlecnt; |
382 | static int idlemax, idlecnt; |
288 | |
383 | |
|
|
384 | static struct ev_prepare **prepares; |
|
|
385 | static int preparemax, preparecnt; |
|
|
386 | |
289 | static struct ev_check **checks; |
387 | static struct ev_check **checks; |
290 | static int checkmax, checkcnt; |
388 | static int checkmax, checkcnt; |
291 | |
389 | |
292 | /*****************************************************************************/ |
390 | /*****************************************************************************/ |
293 | |
391 | |
|
|
392 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
393 | static struct ev_signal childev; |
|
|
394 | |
|
|
395 | #ifndef WCONTINUED |
|
|
396 | # define WCONTINUED 0 |
|
|
397 | #endif |
|
|
398 | |
|
|
399 | static void |
|
|
400 | childcb (struct ev_signal *sw, int revents) |
|
|
401 | { |
|
|
402 | struct ev_child *w; |
|
|
403 | int pid, status; |
|
|
404 | |
|
|
405 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
|
|
406 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
|
|
407 | if (w->pid == pid || w->pid == -1) |
|
|
408 | { |
|
|
409 | w->status = status; |
|
|
410 | event ((W)w, EV_CHILD); |
|
|
411 | } |
|
|
412 | } |
|
|
413 | |
|
|
414 | /*****************************************************************************/ |
|
|
415 | |
294 | #if HAVE_EPOLL |
416 | #if HAVE_EPOLL |
295 | # include "ev_epoll.c" |
417 | # include "ev_epoll.c" |
296 | #endif |
418 | #endif |
297 | #if HAVE_SELECT |
419 | #if HAVE_SELECT |
298 | # include "ev_select.c" |
420 | # include "ev_select.c" |
299 | #endif |
421 | #endif |
300 | |
422 | |
|
|
423 | int |
|
|
424 | ev_version_major (void) |
|
|
425 | { |
|
|
426 | return EV_VERSION_MAJOR; |
|
|
427 | } |
|
|
428 | |
|
|
429 | int |
|
|
430 | ev_version_minor (void) |
|
|
431 | { |
|
|
432 | return EV_VERSION_MINOR; |
|
|
433 | } |
|
|
434 | |
301 | int ev_init (int flags) |
435 | int ev_init (int flags) |
302 | { |
436 | { |
|
|
437 | if (!ev_method) |
|
|
438 | { |
303 | #if HAVE_MONOTONIC |
439 | #if HAVE_MONOTONIC |
304 | { |
440 | { |
305 | struct timespec ts; |
441 | struct timespec ts; |
306 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
442 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
307 | have_monotonic = 1; |
443 | have_monotonic = 1; |
308 | } |
444 | } |
309 | #endif |
445 | #endif |
310 | |
446 | |
311 | ev_now = ev_time (); |
447 | ev_now = ev_time (); |
312 | now = get_clock (); |
448 | now = get_clock (); |
313 | diff = ev_now - now; |
449 | diff = ev_now - now; |
314 | |
450 | |
315 | if (pipe (sigpipe)) |
451 | if (pipe (sigpipe)) |
316 | return 0; |
452 | return 0; |
317 | |
453 | |
318 | ev_method = EVMETHOD_NONE; |
454 | ev_method = EVMETHOD_NONE; |
319 | #if HAVE_EPOLL |
455 | #if HAVE_EPOLL |
320 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
456 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
321 | #endif |
457 | #endif |
322 | #if HAVE_SELECT |
458 | #if HAVE_SELECT |
323 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
459 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
324 | #endif |
460 | #endif |
325 | |
461 | |
326 | if (ev_method) |
462 | if (ev_method) |
327 | { |
463 | { |
328 | evw_init (&sigev, sigcb); |
464 | ev_watcher_init (&sigev, sigcb); |
329 | siginit (); |
465 | siginit (); |
|
|
466 | |
|
|
467 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
468 | ev_signal_start (&childev); |
|
|
469 | } |
330 | } |
470 | } |
331 | |
471 | |
332 | return ev_method; |
472 | return ev_method; |
333 | } |
473 | } |
334 | |
474 | |
335 | /*****************************************************************************/ |
475 | /*****************************************************************************/ |
336 | |
476 | |
|
|
477 | void |
337 | void ev_prefork (void) |
478 | ev_prefork (void) |
338 | { |
479 | { |
339 | /* nop */ |
480 | /* nop */ |
340 | } |
481 | } |
341 | |
482 | |
|
|
483 | void |
342 | void ev_postfork_parent (void) |
484 | ev_postfork_parent (void) |
343 | { |
485 | { |
344 | /* nop */ |
486 | /* nop */ |
345 | } |
487 | } |
346 | |
488 | |
|
|
489 | void |
347 | void ev_postfork_child (void) |
490 | ev_postfork_child (void) |
348 | { |
491 | { |
349 | #if HAVE_EPOLL |
492 | #if HAVE_EPOLL |
350 | if (ev_method == EVMETHOD_EPOLL) |
493 | if (ev_method == EVMETHOD_EPOLL) |
351 | epoll_postfork_child (); |
494 | epoll_postfork_child (); |
352 | #endif |
495 | #endif |
353 | |
496 | |
354 | evio_stop (&sigev); |
497 | ev_io_stop (&sigev); |
355 | close (sigpipe [0]); |
498 | close (sigpipe [0]); |
356 | close (sigpipe [1]); |
499 | close (sigpipe [1]); |
357 | pipe (sigpipe); |
500 | pipe (sigpipe); |
358 | siginit (); |
501 | siginit (); |
359 | } |
502 | } |
360 | |
503 | |
361 | /*****************************************************************************/ |
504 | /*****************************************************************************/ |
362 | |
505 | |
363 | static void |
506 | static void |
364 | fd_reify (void) |
|
|
365 | { |
|
|
366 | int i; |
|
|
367 | |
|
|
368 | for (i = 0; i < fdchangecnt; ++i) |
|
|
369 | { |
|
|
370 | int fd = fdchanges [i]; |
|
|
371 | ANFD *anfd = anfds + fd; |
|
|
372 | struct ev_io *w; |
|
|
373 | |
|
|
374 | int wev = 0; |
|
|
375 | |
|
|
376 | for (w = anfd->head; w; w = w->next) |
|
|
377 | wev |= w->events; |
|
|
378 | |
|
|
379 | if (anfd->wev != wev) |
|
|
380 | { |
|
|
381 | method_modify (fd, anfd->wev, wev); |
|
|
382 | anfd->wev = wev; |
|
|
383 | } |
|
|
384 | } |
|
|
385 | |
|
|
386 | fdchangecnt = 0; |
|
|
387 | } |
|
|
388 | |
|
|
389 | static void |
|
|
390 | call_pending () |
507 | call_pending (void) |
391 | { |
508 | { |
392 | int i; |
509 | while (pendingcnt) |
393 | |
|
|
394 | for (i = 0; i < pendingcnt; ++i) |
|
|
395 | { |
510 | { |
396 | ANPENDING *p = pendings + i; |
511 | ANPENDING *p = pendings + --pendingcnt; |
397 | |
512 | |
398 | if (p->w) |
513 | if (p->w) |
399 | { |
514 | { |
400 | p->w->pending = 0; |
515 | p->w->pending = 0; |
401 | p->w->cb (p->w, p->events); |
516 | p->w->cb (p->w, p->events); |
402 | } |
517 | } |
403 | } |
518 | } |
404 | |
|
|
405 | pendingcnt = 0; |
|
|
406 | } |
519 | } |
407 | |
520 | |
408 | static void |
521 | static void |
409 | timers_reify () |
522 | timers_reify (void) |
410 | { |
523 | { |
411 | while (timercnt && timers [0]->at <= now) |
524 | while (timercnt && timers [0]->at <= now) |
412 | { |
525 | { |
413 | struct ev_timer *w = timers [0]; |
526 | struct ev_timer *w = timers [0]; |
414 | |
527 | |
… | |
… | |
420 | w->at = now + w->repeat; |
533 | w->at = now + w->repeat; |
421 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
422 | downheap ((WT *)timers, timercnt, 0); |
535 | downheap ((WT *)timers, timercnt, 0); |
423 | } |
536 | } |
424 | else |
537 | else |
425 | evtimer_stop (w); /* nonrepeating: stop timer */ |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
426 | } |
539 | } |
427 | } |
540 | } |
428 | |
541 | |
429 | static void |
542 | static void |
430 | periodics_reify () |
543 | periodics_reify (void) |
431 | { |
544 | { |
432 | while (periodiccnt && periodics [0]->at <= ev_now) |
545 | while (periodiccnt && periodics [0]->at <= ev_now) |
433 | { |
546 | { |
434 | struct ev_periodic *w = periodics [0]; |
547 | struct ev_periodic *w = periodics [0]; |
435 | |
548 | |
… | |
… | |
439 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
552 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
440 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
553 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
441 | downheap ((WT *)periodics, periodiccnt, 0); |
554 | downheap ((WT *)periodics, periodiccnt, 0); |
442 | } |
555 | } |
443 | else |
556 | else |
444 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
557 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
445 | |
558 | |
446 | event ((W)w, EV_TIMEOUT); |
559 | event ((W)w, EV_TIMEOUT); |
447 | } |
560 | } |
448 | } |
561 | } |
449 | |
562 | |
… | |
… | |
461 | { |
574 | { |
462 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
575 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
463 | |
576 | |
464 | if (fabs (diff) >= 1e-4) |
577 | if (fabs (diff) >= 1e-4) |
465 | { |
578 | { |
466 | evperiodic_stop (w); |
579 | ev_periodic_stop (w); |
467 | evperiodic_start (w); |
580 | ev_periodic_start (w); |
468 | |
581 | |
469 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
582 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
470 | } |
583 | } |
471 | } |
584 | } |
472 | } |
585 | } |
473 | } |
586 | } |
474 | |
587 | |
475 | static void |
588 | static void |
476 | time_update () |
589 | time_update (void) |
477 | { |
590 | { |
478 | int i; |
591 | int i; |
479 | |
592 | |
480 | ev_now = ev_time (); |
593 | ev_now = ev_time (); |
481 | |
594 | |
… | |
… | |
515 | int ev_loop_done; |
628 | int ev_loop_done; |
516 | |
629 | |
517 | void ev_loop (int flags) |
630 | void ev_loop (int flags) |
518 | { |
631 | { |
519 | double block; |
632 | double block; |
520 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
633 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
521 | |
|
|
522 | if (checkcnt) |
|
|
523 | { |
|
|
524 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
525 | call_pending (); |
|
|
526 | } |
|
|
527 | |
634 | |
528 | do |
635 | do |
529 | { |
636 | { |
|
|
637 | /* queue check watchers (and execute them) */ |
|
|
638 | if (preparecnt) |
|
|
639 | { |
|
|
640 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
641 | call_pending (); |
|
|
642 | } |
|
|
643 | |
530 | /* update fd-related kernel structures */ |
644 | /* update fd-related kernel structures */ |
531 | fd_reify (); |
645 | fd_reify (); |
532 | |
646 | |
533 | /* calculate blocking time */ |
647 | /* calculate blocking time */ |
534 | |
648 | |
535 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
649 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
650 | always have timers, we just calculate it always */ |
536 | ev_now = ev_time (); |
651 | ev_now = ev_time (); |
537 | |
652 | |
538 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
653 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
539 | block = 0.; |
654 | block = 0.; |
540 | else |
655 | else |
… | |
… | |
560 | |
675 | |
561 | /* update ev_now, do magic */ |
676 | /* update ev_now, do magic */ |
562 | time_update (); |
677 | time_update (); |
563 | |
678 | |
564 | /* queue pending timers and reschedule them */ |
679 | /* queue pending timers and reschedule them */ |
|
|
680 | timers_reify (); /* relative timers called last */ |
565 | periodics_reify (); /* absolute timers first */ |
681 | periodics_reify (); /* absolute timers called first */ |
566 | timers_reify (); /* relative timers second */ |
|
|
567 | |
682 | |
568 | /* queue idle watchers unless io or timers are pending */ |
683 | /* queue idle watchers unless io or timers are pending */ |
569 | if (!pendingcnt) |
684 | if (!pendingcnt) |
570 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
685 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
571 | |
686 | |
572 | /* queue check and possibly idle watchers */ |
687 | /* queue check watchers, to be executed first */ |
|
|
688 | if (checkcnt) |
573 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
689 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
574 | |
690 | |
575 | call_pending (); |
691 | call_pending (); |
576 | } |
692 | } |
577 | while (!ev_loop_done); |
693 | while (!ev_loop_done); |
578 | |
694 | |
… | |
… | |
627 | } |
743 | } |
628 | |
744 | |
629 | /*****************************************************************************/ |
745 | /*****************************************************************************/ |
630 | |
746 | |
631 | void |
747 | void |
632 | evio_start (struct ev_io *w) |
748 | ev_io_start (struct ev_io *w) |
633 | { |
749 | { |
634 | if (ev_is_active (w)) |
750 | if (ev_is_active (w)) |
635 | return; |
751 | return; |
636 | |
752 | |
637 | int fd = w->fd; |
753 | int fd = w->fd; |
638 | |
754 | |
639 | ev_start ((W)w, 1); |
755 | ev_start ((W)w, 1); |
640 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
756 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
641 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
757 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
642 | |
758 | |
643 | ++fdchangecnt; |
759 | fd_change (fd); |
644 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
645 | fdchanges [fdchangecnt - 1] = fd; |
|
|
646 | } |
760 | } |
647 | |
761 | |
648 | void |
762 | void |
649 | evio_stop (struct ev_io *w) |
763 | ev_io_stop (struct ev_io *w) |
650 | { |
764 | { |
651 | ev_clear ((W)w); |
765 | ev_clear ((W)w); |
652 | if (!ev_is_active (w)) |
766 | if (!ev_is_active (w)) |
653 | return; |
767 | return; |
654 | |
768 | |
655 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
769 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
656 | ev_stop ((W)w); |
770 | ev_stop ((W)w); |
657 | |
771 | |
658 | ++fdchangecnt; |
772 | fd_change (w->fd); |
659 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
660 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
661 | } |
773 | } |
662 | |
774 | |
663 | void |
775 | void |
664 | evtimer_start (struct ev_timer *w) |
776 | ev_timer_start (struct ev_timer *w) |
665 | { |
777 | { |
666 | if (ev_is_active (w)) |
778 | if (ev_is_active (w)) |
667 | return; |
779 | return; |
668 | |
780 | |
669 | w->at += now; |
781 | w->at += now; |
… | |
… | |
675 | timers [timercnt - 1] = w; |
787 | timers [timercnt - 1] = w; |
676 | upheap ((WT *)timers, timercnt - 1); |
788 | upheap ((WT *)timers, timercnt - 1); |
677 | } |
789 | } |
678 | |
790 | |
679 | void |
791 | void |
680 | evtimer_stop (struct ev_timer *w) |
792 | ev_timer_stop (struct ev_timer *w) |
681 | { |
793 | { |
682 | ev_clear ((W)w); |
794 | ev_clear ((W)w); |
683 | if (!ev_is_active (w)) |
795 | if (!ev_is_active (w)) |
684 | return; |
796 | return; |
685 | |
797 | |
… | |
… | |
693 | |
805 | |
694 | ev_stop ((W)w); |
806 | ev_stop ((W)w); |
695 | } |
807 | } |
696 | |
808 | |
697 | void |
809 | void |
698 | evtimer_again (struct ev_timer *w) |
810 | ev_timer_again (struct ev_timer *w) |
699 | { |
811 | { |
700 | if (ev_is_active (w)) |
812 | if (ev_is_active (w)) |
701 | { |
813 | { |
702 | if (w->repeat) |
814 | if (w->repeat) |
703 | { |
815 | { |
704 | w->at = now + w->repeat; |
816 | w->at = now + w->repeat; |
705 | downheap ((WT *)timers, timercnt, w->active - 1); |
817 | downheap ((WT *)timers, timercnt, w->active - 1); |
706 | } |
818 | } |
707 | else |
819 | else |
708 | evtimer_stop (w); |
820 | ev_timer_stop (w); |
709 | } |
821 | } |
710 | else if (w->repeat) |
822 | else if (w->repeat) |
711 | evtimer_start (w); |
823 | ev_timer_start (w); |
712 | } |
824 | } |
713 | |
825 | |
714 | void |
826 | void |
715 | evperiodic_start (struct ev_periodic *w) |
827 | ev_periodic_start (struct ev_periodic *w) |
716 | { |
828 | { |
717 | if (ev_is_active (w)) |
829 | if (ev_is_active (w)) |
718 | return; |
830 | return; |
719 | |
831 | |
720 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
832 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
… | |
… | |
728 | periodics [periodiccnt - 1] = w; |
840 | periodics [periodiccnt - 1] = w; |
729 | upheap ((WT *)periodics, periodiccnt - 1); |
841 | upheap ((WT *)periodics, periodiccnt - 1); |
730 | } |
842 | } |
731 | |
843 | |
732 | void |
844 | void |
733 | evperiodic_stop (struct ev_periodic *w) |
845 | ev_periodic_stop (struct ev_periodic *w) |
734 | { |
846 | { |
735 | ev_clear ((W)w); |
847 | ev_clear ((W)w); |
736 | if (!ev_is_active (w)) |
848 | if (!ev_is_active (w)) |
737 | return; |
849 | return; |
738 | |
850 | |
… | |
… | |
744 | |
856 | |
745 | ev_stop ((W)w); |
857 | ev_stop ((W)w); |
746 | } |
858 | } |
747 | |
859 | |
748 | void |
860 | void |
749 | evsignal_start (struct ev_signal *w) |
861 | ev_signal_start (struct ev_signal *w) |
750 | { |
862 | { |
751 | if (ev_is_active (w)) |
863 | if (ev_is_active (w)) |
752 | return; |
864 | return; |
753 | |
865 | |
754 | ev_start ((W)w, 1); |
866 | ev_start ((W)w, 1); |
… | |
… | |
764 | sigaction (w->signum, &sa, 0); |
876 | sigaction (w->signum, &sa, 0); |
765 | } |
877 | } |
766 | } |
878 | } |
767 | |
879 | |
768 | void |
880 | void |
769 | evsignal_stop (struct ev_signal *w) |
881 | ev_signal_stop (struct ev_signal *w) |
770 | { |
882 | { |
771 | ev_clear ((W)w); |
883 | ev_clear ((W)w); |
772 | if (!ev_is_active (w)) |
884 | if (!ev_is_active (w)) |
773 | return; |
885 | return; |
774 | |
886 | |
… | |
… | |
777 | |
889 | |
778 | if (!signals [w->signum - 1].head) |
890 | if (!signals [w->signum - 1].head) |
779 | signal (w->signum, SIG_DFL); |
891 | signal (w->signum, SIG_DFL); |
780 | } |
892 | } |
781 | |
893 | |
|
|
894 | void |
782 | void evidle_start (struct ev_idle *w) |
895 | ev_idle_start (struct ev_idle *w) |
783 | { |
896 | { |
784 | if (ev_is_active (w)) |
897 | if (ev_is_active (w)) |
785 | return; |
898 | return; |
786 | |
899 | |
787 | ev_start ((W)w, ++idlecnt); |
900 | ev_start ((W)w, ++idlecnt); |
788 | array_needsize (idles, idlemax, idlecnt, ); |
901 | array_needsize (idles, idlemax, idlecnt, ); |
789 | idles [idlecnt - 1] = w; |
902 | idles [idlecnt - 1] = w; |
790 | } |
903 | } |
791 | |
904 | |
|
|
905 | void |
792 | void evidle_stop (struct ev_idle *w) |
906 | ev_idle_stop (struct ev_idle *w) |
793 | { |
907 | { |
794 | ev_clear ((W)w); |
908 | ev_clear ((W)w); |
795 | if (ev_is_active (w)) |
909 | if (ev_is_active (w)) |
796 | return; |
910 | return; |
797 | |
911 | |
798 | idles [w->active - 1] = idles [--idlecnt]; |
912 | idles [w->active - 1] = idles [--idlecnt]; |
799 | ev_stop ((W)w); |
913 | ev_stop ((W)w); |
800 | } |
914 | } |
801 | |
915 | |
|
|
916 | void |
|
|
917 | ev_prepare_start (struct ev_prepare *w) |
|
|
918 | { |
|
|
919 | if (ev_is_active (w)) |
|
|
920 | return; |
|
|
921 | |
|
|
922 | ev_start ((W)w, ++preparecnt); |
|
|
923 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
924 | prepares [preparecnt - 1] = w; |
|
|
925 | } |
|
|
926 | |
|
|
927 | void |
|
|
928 | ev_prepare_stop (struct ev_prepare *w) |
|
|
929 | { |
|
|
930 | ev_clear ((W)w); |
|
|
931 | if (ev_is_active (w)) |
|
|
932 | return; |
|
|
933 | |
|
|
934 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
935 | ev_stop ((W)w); |
|
|
936 | } |
|
|
937 | |
|
|
938 | void |
802 | void evcheck_start (struct ev_check *w) |
939 | ev_check_start (struct ev_check *w) |
803 | { |
940 | { |
804 | if (ev_is_active (w)) |
941 | if (ev_is_active (w)) |
805 | return; |
942 | return; |
806 | |
943 | |
807 | ev_start ((W)w, ++checkcnt); |
944 | ev_start ((W)w, ++checkcnt); |
808 | array_needsize (checks, checkmax, checkcnt, ); |
945 | array_needsize (checks, checkmax, checkcnt, ); |
809 | checks [checkcnt - 1] = w; |
946 | checks [checkcnt - 1] = w; |
810 | } |
947 | } |
811 | |
948 | |
|
|
949 | void |
812 | void evcheck_stop (struct ev_check *w) |
950 | ev_check_stop (struct ev_check *w) |
813 | { |
951 | { |
814 | ev_clear ((W)w); |
952 | ev_clear ((W)w); |
815 | if (ev_is_active (w)) |
953 | if (ev_is_active (w)) |
816 | return; |
954 | return; |
817 | |
955 | |
818 | checks [w->active - 1] = checks [--checkcnt]; |
956 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
957 | ev_stop ((W)w); |
|
|
958 | } |
|
|
959 | |
|
|
960 | void |
|
|
961 | ev_child_start (struct ev_child *w) |
|
|
962 | { |
|
|
963 | if (ev_is_active (w)) |
|
|
964 | return; |
|
|
965 | |
|
|
966 | ev_start ((W)w, 1); |
|
|
967 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
968 | } |
|
|
969 | |
|
|
970 | void |
|
|
971 | ev_child_stop (struct ev_child *w) |
|
|
972 | { |
|
|
973 | ev_clear ((W)w); |
|
|
974 | if (ev_is_active (w)) |
|
|
975 | return; |
|
|
976 | |
|
|
977 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
819 | ev_stop ((W)w); |
978 | ev_stop ((W)w); |
820 | } |
979 | } |
821 | |
980 | |
822 | /*****************************************************************************/ |
981 | /*****************************************************************************/ |
823 | |
982 | |
… | |
… | |
833 | once_cb (struct ev_once *once, int revents) |
992 | once_cb (struct ev_once *once, int revents) |
834 | { |
993 | { |
835 | void (*cb)(int revents, void *arg) = once->cb; |
994 | void (*cb)(int revents, void *arg) = once->cb; |
836 | void *arg = once->arg; |
995 | void *arg = once->arg; |
837 | |
996 | |
838 | evio_stop (&once->io); |
997 | ev_io_stop (&once->io); |
839 | evtimer_stop (&once->to); |
998 | ev_timer_stop (&once->to); |
840 | free (once); |
999 | free (once); |
841 | |
1000 | |
842 | cb (revents, arg); |
1001 | cb (revents, arg); |
843 | } |
1002 | } |
844 | |
1003 | |
… | |
… | |
864 | else |
1023 | else |
865 | { |
1024 | { |
866 | once->cb = cb; |
1025 | once->cb = cb; |
867 | once->arg = arg; |
1026 | once->arg = arg; |
868 | |
1027 | |
869 | evw_init (&once->io, once_cb_io); |
1028 | ev_watcher_init (&once->io, once_cb_io); |
870 | |
1029 | |
871 | if (fd >= 0) |
1030 | if (fd >= 0) |
872 | { |
1031 | { |
873 | evio_set (&once->io, fd, events); |
1032 | ev_io_set (&once->io, fd, events); |
874 | evio_start (&once->io); |
1033 | ev_io_start (&once->io); |
875 | } |
1034 | } |
876 | |
1035 | |
877 | evw_init (&once->to, once_cb_to); |
1036 | ev_watcher_init (&once->to, once_cb_to); |
878 | |
1037 | |
879 | if (timeout >= 0.) |
1038 | if (timeout >= 0.) |
880 | { |
1039 | { |
881 | evtimer_set (&once->to, timeout, 0.); |
1040 | ev_timer_set (&once->to, timeout, 0.); |
882 | evtimer_start (&once->to); |
1041 | ev_timer_start (&once->to); |
883 | } |
1042 | } |
884 | } |
1043 | } |
885 | } |
1044 | } |
886 | |
1045 | |
887 | /*****************************************************************************/ |
1046 | /*****************************************************************************/ |
… | |
… | |
898 | |
1057 | |
899 | static void |
1058 | static void |
900 | ocb (struct ev_timer *w, int revents) |
1059 | ocb (struct ev_timer *w, int revents) |
901 | { |
1060 | { |
902 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
903 | evtimer_stop (w); |
1062 | ev_timer_stop (w); |
904 | evtimer_start (w); |
1063 | ev_timer_start (w); |
905 | } |
1064 | } |
906 | |
1065 | |
907 | static void |
1066 | static void |
908 | scb (struct ev_signal *w, int revents) |
1067 | scb (struct ev_signal *w, int revents) |
909 | { |
1068 | { |
910 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
911 | evio_stop (&wio); |
1070 | ev_io_stop (&wio); |
912 | evio_start (&wio); |
1071 | ev_io_start (&wio); |
913 | } |
1072 | } |
914 | |
1073 | |
915 | static void |
1074 | static void |
916 | gcb (struct ev_signal *w, int revents) |
1075 | gcb (struct ev_signal *w, int revents) |
917 | { |
1076 | { |
… | |
… | |
921 | |
1080 | |
922 | int main (void) |
1081 | int main (void) |
923 | { |
1082 | { |
924 | ev_init (0); |
1083 | ev_init (0); |
925 | |
1084 | |
926 | evio_init (&wio, sin_cb, 0, EV_READ); |
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
927 | evio_start (&wio); |
1086 | ev_io_start (&wio); |
928 | |
1087 | |
929 | struct ev_timer t[10000]; |
1088 | struct ev_timer t[10000]; |
930 | |
1089 | |
931 | #if 0 |
1090 | #if 0 |
932 | int i; |
1091 | int i; |
933 | for (i = 0; i < 10000; ++i) |
1092 | for (i = 0; i < 10000; ++i) |
934 | { |
1093 | { |
935 | struct ev_timer *w = t + i; |
1094 | struct ev_timer *w = t + i; |
936 | evw_init (w, ocb, i); |
1095 | ev_watcher_init (w, ocb, i); |
937 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
938 | evtimer_start (w); |
1097 | ev_timer_start (w); |
939 | if (drand48 () < 0.5) |
1098 | if (drand48 () < 0.5) |
940 | evtimer_stop (w); |
1099 | ev_timer_stop (w); |
941 | } |
1100 | } |
942 | #endif |
1101 | #endif |
943 | |
1102 | |
944 | struct ev_timer t1; |
1103 | struct ev_timer t1; |
945 | evtimer_init (&t1, ocb, 5, 10); |
1104 | ev_timer_init (&t1, ocb, 5, 10); |
946 | evtimer_start (&t1); |
1105 | ev_timer_start (&t1); |
947 | |
1106 | |
948 | struct ev_signal sig; |
1107 | struct ev_signal sig; |
949 | evsignal_init (&sig, scb, SIGQUIT); |
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
950 | evsignal_start (&sig); |
1109 | ev_signal_start (&sig); |
951 | |
1110 | |
952 | struct ev_check cw; |
1111 | struct ev_check cw; |
953 | evcheck_init (&cw, gcb); |
1112 | ev_check_init (&cw, gcb); |
954 | evcheck_start (&cw); |
1113 | ev_check_start (&cw); |
955 | |
1114 | |
956 | struct ev_idle iw; |
1115 | struct ev_idle iw; |
957 | evidle_init (&iw, gcb); |
1116 | ev_idle_init (&iw, gcb); |
958 | evidle_start (&iw); |
1117 | ev_idle_start (&iw); |
959 | |
1118 | |
960 | ev_loop (0); |
1119 | ev_loop (0); |
961 | |
1120 | |
962 | return 0; |
1121 | return 0; |
963 | } |
1122 | } |