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Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.216 by root, Sat Mar 8 07:04:55 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * 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.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
51# ifndef EV_USE_MONOTONIC 59# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 60# define EV_USE_MONOTONIC 0
53# endif 61# endif
54# ifndef EV_USE_REALTIME 62# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 63# define EV_USE_REALTIME 0
64# endif
65# endif
66
67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
56# endif 72# endif
57# endif 73# endif
58 74
59# ifndef EV_USE_SELECT 75# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 76# if HAVE_SELECT && HAVE_SYS_SELECT_H
146 162
147#ifndef EV_USE_REALTIME 163#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 164# define EV_USE_REALTIME 0
149#endif 165#endif
150 166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
151#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
153#endif 173#endif
154 174
155#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
202#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
205#endif 225#endif
206 226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
207#if EV_SELECT_IS_WINSOCKET 242#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 243# include <winsock.h>
209#endif 244#endif
210 245
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
219/**/ 246/**/
247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 257
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224 261
225#if __GNUC__ >= 3 262#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 264# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 265#else
236# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
240#endif 271#endif
241 272
242#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
243#define expect_true(expr) expect ((expr) != 0, 1) 274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
276
277#if EV_MINIMAL
278# define inline_speed static noinline
279#else
280# define inline_speed static inline
281#endif
244 282
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 285
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */ 287#define EMPTY2(a,b) /* used to suppress some warnings */
250 288
251typedef ev_watcher *W; 289typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
254 292
293#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
256 298
257#ifdef _WIN32 299#ifdef _WIN32
258# include "ev_win32.c" 300# include "ev_win32.c"
259#endif 301#endif
260 302
281 perror (msg); 323 perror (msg);
282 abort (); 324 abort ();
283 } 325 }
284} 326}
285 327
286static void *(*alloc)(void *ptr, size_t size) = realloc; 328static void *(*alloc)(void *ptr, long size);
287 329
288void 330void
289ev_set_allocator (void *(*cb)(void *ptr, size_t size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 332{
291 alloc = cb; 333 alloc = cb;
292} 334}
293 335
294inline_speed void * 336inline_speed void *
295ev_realloc (void *ptr, size_t size) 337ev_realloc (void *ptr, long size)
296{ 338{
297 ptr = alloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
298 340
299 if (!ptr && size) 341 if (!ptr && size)
300 { 342 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size); 343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort (); 344 abort ();
303 } 345 }
304 346
305 return ptr; 347 return ptr;
306} 348}
324{ 366{
325 W w; 367 W w;
326 int events; 368 int events;
327} ANPENDING; 369} ANPENDING;
328 370
371#if EV_USE_INOTIFY
329typedef struct 372typedef struct
330{ 373{
331#if EV_USE_INOTIFY
332 WL head; 374 WL head;
333#endif
334} ANFS; 375} ANFS;
376#endif
335 377
336#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
337 379
338 struct ev_loop 380 struct ev_loop
339 { 381 {
396{ 438{
397 return ev_rt_now; 439 return ev_rt_now;
398} 440}
399#endif 441#endif
400 442
401#define array_roundsize(type,n) (((n) | 4) & ~3) 443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
447 {
448#if EV_USE_NANOSLEEP
449 struct timespec ts;
450
451 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0);
455#elif defined(_WIN32)
456 Sleep (delay * 1e3);
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
467
468/*****************************************************************************/
469
470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
402 497
403#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
404 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
405 { \ 500 { \
406 int newcnt = cur; \ 501 int ocur_ = (cur); \
407 do \ 502 (base) = (type *)array_realloc \
408 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
409 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
410 } \
411 while ((cnt) > newcnt); \
412 \
413 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
414 init (base + cur, newcnt - cur); \
415 cur = newcnt; \
416 } 505 }
417 506
507#if 0
418#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
419 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420 { \ 510 { \
421 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
422 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
423 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
424 } 514 }
515#endif
425 516
426#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
427 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428 519
429/*****************************************************************************/ 520/*****************************************************************************/
430 521
431void noinline 522void noinline
432ev_feed_event (EV_P_ void *w, int revents) 523ev_feed_event (EV_P_ void *w, int revents)
433{ 524{
434 W w_ = (W)w; 525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
435 527
436 if (expect_false (w_->pending)) 528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
437 { 531 {
532 w_->pending = ++pendingcnt [pri];
533 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534 pendings [pri][w_->pending - 1].w = w_;
438 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 535 pendings [pri][w_->pending - 1].events = revents;
439 return;
440 } 536 }
441
442 w_->pending = ++pendingcnt [ABSPRI (w_)];
443 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446} 537}
447 538
448void inline_size 539void inline_speed
449queue_events (EV_P_ W *events, int eventcnt, int type) 540queue_events (EV_P_ W *events, int eventcnt, int type)
450{ 541{
451 int i; 542 int i;
452 543
453 for (i = 0; i < eventcnt; ++i) 544 for (i = 0; i < eventcnt; ++i)
485} 576}
486 577
487void 578void
488ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
489{ 580{
581 if (fd >= 0 && fd < anfdmax)
490 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
491} 583}
492 584
493void inline_size 585void inline_size
494fd_reify (EV_P) 586fd_reify (EV_P)
495{ 587{
499 { 591 {
500 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
501 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
502 ev_io *w; 594 ev_io *w;
503 595
504 int events = 0; 596 unsigned char events = 0;
505 597
506 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
507 events |= w->events; 599 events |= (unsigned char)w->events;
508 600
509#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
510 if (events) 602 if (events)
511 { 603 {
512 unsigned long argp; 604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
513 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
514 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515 } 611 }
516#endif 612#endif
517 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
518 anfd->reify = 0; 618 anfd->reify = 0;
519
520 backend_modify (EV_A_ fd, anfd->events, events);
521 anfd->events = events; 619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
522 } 624 }
523 625
524 fdchangecnt = 0; 626 fdchangecnt = 0;
525} 627}
526 628
527void inline_size 629void inline_size
528fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
529{ 631{
530 if (expect_false (anfds [fd].reify)) 632 unsigned char reify = anfds [fd].reify;
531 return;
532
533 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
534 634
635 if (expect_true (!reify))
636 {
535 ++fdchangecnt; 637 ++fdchangecnt;
536 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
538} 641}
539 642
540void inline_speed 643void inline_speed
541fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
542{ 645{
589static void noinline 692static void noinline
590fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
591{ 694{
592 int fd; 695 int fd;
593 696
594 /* this should be highly optimised to not do anything but set a flag */
595 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
596 if (anfds [fd].events) 698 if (anfds [fd].events)
597 { 699 {
598 anfds [fd].events = 0; 700 anfds [fd].events = 0;
599 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
600 } 702 }
601} 703}
602 704
603/*****************************************************************************/ 705/*****************************************************************************/
604 706
605void inline_speed 707void inline_speed
606upheap (WT *heap, int k) 708upheap (WT *heap, int k)
607{ 709{
608 WT w = heap [k]; 710 WT w = heap [k];
609 711
610 while (k && heap [k >> 1]->at > w->at) 712 while (k)
611 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
612 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
613 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
614 k >>= 1; 721 k = p;
615 } 722 }
616 723
617 heap [k] = w; 724 heap [k] = w;
618 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
619
620} 726}
621 727
622void inline_speed 728void inline_speed
623downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
624{ 730{
625 WT w = heap [k]; 731 WT w = heap [k];
626 732
627 while (k < (N >> 1)) 733 for (;;)
628 { 734 {
629 int j = k << 1; 735 int c = (k << 1) + 1;
630 736
631 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
632 ++j;
633
634 if (w->at <= heap [j]->at)
635 break; 738 break;
636 739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
637 heap [k] = heap [j]; 746 heap [k] = heap [c];
638 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
639 k = j; 749 k = c;
640 } 750 }
641 751
642 heap [k] = w; 752 heap [k] = w;
643 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
644} 754}
653/*****************************************************************************/ 763/*****************************************************************************/
654 764
655typedef struct 765typedef struct
656{ 766{
657 WL head; 767 WL head;
658 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
659} ANSIG; 769} ANSIG;
660 770
661static ANSIG *signals; 771static ANSIG *signals;
662static int signalmax; 772static int signalmax;
663 773
664static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
665static sig_atomic_t volatile gotsig;
666static ev_io sigev;
667 775
668void inline_size 776void inline_size
669signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
670{ 778{
671 while (count--) 779 while (count--)
675 783
676 ++base; 784 ++base;
677 } 785 }
678} 786}
679 787
680static void 788/*****************************************************************************/
681sighandler (int signum)
682{
683#if _WIN32
684 signal (signum, sighandler);
685#endif
686 789
687 signals [signum - 1].gotsig = 1;
688
689 if (!gotsig)
690 {
691 int old_errno = errno;
692 gotsig = 1;
693 write (sigpipe [1], &signum, 1);
694 errno = old_errno;
695 }
696}
697
698void noinline
699ev_feed_signal_event (EV_P_ int signum)
700{
701 WL w;
702
703#if EV_MULTIPLICITY
704 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
705#endif
706
707 --signum;
708
709 if (signum < 0 || signum >= signalmax)
710 return;
711
712 signals [signum].gotsig = 0;
713
714 for (w = signals [signum].head; w; w = w->next)
715 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
716}
717
718static void
719sigcb (EV_P_ ev_io *iow, int revents)
720{
721 int signum;
722
723 read (sigpipe [0], &revents, 1);
724 gotsig = 0;
725
726 for (signum = signalmax; signum--; )
727 if (signals [signum].gotsig)
728 ev_feed_signal_event (EV_A_ signum + 1);
729}
730
731void inline_size 790void inline_speed
732fd_intern (int fd) 791fd_intern (int fd)
733{ 792{
734#ifdef _WIN32 793#ifdef _WIN32
735 int arg = 1; 794 int arg = 1;
736 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
739 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
740#endif 799#endif
741} 800}
742 801
743static void noinline 802static void noinline
744siginit (EV_P) 803evpipe_init (EV_P)
745{ 804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
746 fd_intern (sigpipe [0]); 810 fd_intern (evpipe [0]);
747 fd_intern (sigpipe [1]); 811 fd_intern (evpipe [1]);
748 812
749 ev_io_set (&sigev, sigpipe [0], EV_READ); 813 ev_io_set (&pipeev, evpipe [0], EV_READ);
750 ev_io_start (EV_A_ &sigev); 814 ev_io_start (EV_A_ &pipeev);
751 ev_unref (EV_A); /* child watcher should not keep loop alive */ 815 ev_unref (EV_A); /* watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{
822 if (!*flag)
823 {
824 int old_errno = errno; /* save errno because write might clobber it */
825
826 *flag = 1;
827 write (evpipe [1], &old_errno, 1);
828
829 errno = old_errno;
830 }
831}
832
833static void
834pipecb (EV_P_ ev_io *iow, int revents)
835{
836 {
837 int dummy;
838 read (evpipe [0], &dummy, 1);
839 }
840
841 if (gotsig && ev_is_default_loop (EV_A))
842 {
843 int signum;
844 gotsig = 0;
845
846 for (signum = signalmax; signum--; )
847 if (signals [signum].gotsig)
848 ev_feed_signal_event (EV_A_ signum + 1);
849 }
850
851#if EV_ASYNC_ENABLE
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864#endif
752} 865}
753 866
754/*****************************************************************************/ 867/*****************************************************************************/
755 868
869static void
870sighandler (int signum)
871{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32
877 signal (signum, sighandler);
878#endif
879
880 signals [signum - 1].gotsig = 1;
881 evpipe_write (EV_A_ &gotsig);
882}
883
884void noinline
885ev_feed_signal_event (EV_P_ int signum)
886{
887 WL w;
888
889#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
892
893 --signum;
894
895 if (signum < 0 || signum >= signalmax)
896 return;
897
898 signals [signum].gotsig = 0;
899
900 for (w = signals [signum].head; w; w = w->next)
901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902}
903
904/*****************************************************************************/
905
756static ev_child *childs [EV_PID_HASHSIZE]; 906static WL childs [EV_PID_HASHSIZE];
757 907
758#ifndef _WIN32 908#ifndef _WIN32
759 909
760static ev_signal childev; 910static ev_signal childev;
761 911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
762void inline_speed 916void inline_speed
763child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 917child_reap (EV_P_ int chain, int pid, int status)
764{ 918{
765 ev_child *w; 919 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
766 921
767 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
923 {
768 if (w->pid == pid || !w->pid) 924 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1)))
769 { 926 {
770 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 927 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
771 w->rpid = pid; 928 w->rpid = pid;
772 w->rstatus = status; 929 w->rstatus = status;
773 ev_feed_event (EV_A_ (W)w, EV_CHILD); 930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
774 } 931 }
932 }
775} 933}
776 934
777#ifndef WCONTINUED 935#ifndef WCONTINUED
778# define WCONTINUED 0 936# define WCONTINUED 0
779#endif 937#endif
788 if (!WCONTINUED 946 if (!WCONTINUED
789 || errno != EINVAL 947 || errno != EINVAL
790 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
791 return; 949 return;
792 950
793 /* make sure we are called again until all childs have been reaped */ 951 /* make sure we are called again until all children have been reaped */
794 /* we need to do it this way so that the callback gets called before we continue */ 952 /* we need to do it this way so that the callback gets called before we continue */
795 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
796 954
797 child_reap (EV_A_ sw, pid, pid, status); 955 child_reap (EV_A_ pid, pid, status);
798 if (EV_PID_HASHSIZE > 1) 956 if (EV_PID_HASHSIZE > 1)
799 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
800} 958}
801 959
802#endif 960#endif
803 961
804/*****************************************************************************/ 962/*****************************************************************************/
876} 1034}
877 1035
878unsigned int 1036unsigned int
879ev_embeddable_backends (void) 1037ev_embeddable_backends (void)
880{ 1038{
881 return EVBACKEND_EPOLL 1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
882 | EVBACKEND_KQUEUE 1040
883 | EVBACKEND_PORT; 1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */
1043 flags &= ~EVBACKEND_EPOLL;
1044
1045 return flags;
884} 1046}
885 1047
886unsigned int 1048unsigned int
887ev_backend (EV_P) 1049ev_backend (EV_P)
888{ 1050{
889 return backend; 1051 return backend;
1052}
1053
1054unsigned int
1055ev_loop_count (EV_P)
1056{
1057 return loop_count;
1058}
1059
1060void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{
1063 io_blocktime = interval;
1064}
1065
1066void
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{
1069 timeout_blocktime = interval;
890} 1070}
891 1071
892static void noinline 1072static void noinline
893loop_init (EV_P_ unsigned int flags) 1073loop_init (EV_P_ unsigned int flags)
894{ 1074{
900 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
901 have_monotonic = 1; 1081 have_monotonic = 1;
902 } 1082 }
903#endif 1083#endif
904 1084
905 ev_rt_now = ev_time (); 1085 ev_rt_now = ev_time ();
906 mn_now = get_clock (); 1086 mn_now = get_clock ();
907 now_floor = mn_now; 1087 now_floor = mn_now;
908 rtmn_diff = ev_rt_now - mn_now; 1088 rtmn_diff = ev_rt_now - mn_now;
1089
1090 io_blocktime = 0.;
1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif
1098
1099 /* pid check not overridable via env */
1100#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK)
1102 curpid = getpid ();
1103#endif
909 1104
910 if (!(flags & EVFLAG_NOENV) 1105 if (!(flags & EVFLAG_NOENV)
911 && !enable_secure () 1106 && !enable_secure ()
912 && getenv ("LIBEV_FLAGS")) 1107 && getenv ("LIBEV_FLAGS"))
913 flags = atoi (getenv ("LIBEV_FLAGS")); 1108 flags = atoi (getenv ("LIBEV_FLAGS"));
914 1109
915 if (!(flags & 0x0000ffffUL)) 1110 if (!(flags & 0x0000ffffUL))
916 flags |= ev_recommended_backends (); 1111 flags |= ev_recommended_backends ();
917 1112
918 backend = 0;
919 backend_fd = -1;
920#if EV_USE_INOTIFY
921 fs_fd = -2;
922#endif
923
924#if EV_USE_PORT 1113#if EV_USE_PORT
925 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
926#endif 1115#endif
927#if EV_USE_KQUEUE 1116#if EV_USE_KQUEUE
928 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
935#endif 1124#endif
936#if EV_USE_SELECT 1125#if EV_USE_SELECT
937 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938#endif 1127#endif
939 1128
940 ev_init (&sigev, sigcb); 1129 ev_init (&pipeev, pipecb);
941 ev_set_priority (&sigev, EV_MAXPRI); 1130 ev_set_priority (&pipeev, EV_MAXPRI);
942 } 1131 }
943} 1132}
944 1133
945static void noinline 1134static void noinline
946loop_destroy (EV_P) 1135loop_destroy (EV_P)
947{ 1136{
948 int i; 1137 int i;
1138
1139 if (ev_is_active (&pipeev))
1140 {
1141 ev_ref (EV_A); /* signal watcher */
1142 ev_io_stop (EV_A_ &pipeev);
1143
1144 close (evpipe [0]); evpipe [0] = 0;
1145 close (evpipe [1]); evpipe [1] = 0;
1146 }
949 1147
950#if EV_USE_INOTIFY 1148#if EV_USE_INOTIFY
951 if (fs_fd >= 0) 1149 if (fs_fd >= 0)
952 close (fs_fd); 1150 close (fs_fd);
953#endif 1151#endif
970#if EV_USE_SELECT 1168#if EV_USE_SELECT
971 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972#endif 1170#endif
973 1171
974 for (i = NUMPRI; i--; ) 1172 for (i = NUMPRI; i--; )
1173 {
975 array_free (pending, [i]); 1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
1179
1180 ev_free (anfds); anfdmax = 0;
976 1181
977 /* have to use the microsoft-never-gets-it-right macro */ 1182 /* have to use the microsoft-never-gets-it-right macro */
978 array_free (fdchange, EMPTY0); 1183 array_free (fdchange, EMPTY);
979 array_free (timer, EMPTY0); 1184 array_free (timer, EMPTY);
980#if EV_PERIODIC_ENABLE 1185#if EV_PERIODIC_ENABLE
981 array_free (periodic, EMPTY0); 1186 array_free (periodic, EMPTY);
982#endif 1187#endif
1188#if EV_FORK_ENABLE
983 array_free (idle, EMPTY0); 1189 array_free (fork, EMPTY);
1190#endif
984 array_free (prepare, EMPTY0); 1191 array_free (prepare, EMPTY);
985 array_free (check, EMPTY0); 1192 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY);
1195#endif
986 1196
987 backend = 0; 1197 backend = 0;
988} 1198}
1199
1200void inline_size infy_fork (EV_P);
989 1201
990void inline_size 1202void inline_size
991loop_fork (EV_P) 1203loop_fork (EV_P)
992{ 1204{
993#if EV_USE_PORT 1205#if EV_USE_PORT
997 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1209 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998#endif 1210#endif
999#if EV_USE_EPOLL 1211#if EV_USE_EPOLL
1000 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1001#endif 1213#endif
1214#if EV_USE_INOTIFY
1215 infy_fork (EV_A);
1216#endif
1002 1217
1003 if (ev_is_active (&sigev)) 1218 if (ev_is_active (&pipeev))
1004 { 1219 {
1005 /* default loop */ 1220 /* this "locks" the handlers against writing to the pipe */
1221 /* while we modify the fd vars */
1222 gotsig = 1;
1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
1006 1226
1007 ev_ref (EV_A); 1227 ev_ref (EV_A);
1008 ev_io_stop (EV_A_ &sigev); 1228 ev_io_stop (EV_A_ &pipeev);
1009 close (sigpipe [0]); 1229 close (evpipe [0]);
1010 close (sigpipe [1]); 1230 close (evpipe [1]);
1011 1231
1012 while (pipe (sigpipe))
1013 syserr ("(libev) error creating pipe");
1014
1015 siginit (EV_A); 1232 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ);
1016 } 1235 }
1017 1236
1018 postfork = 0; 1237 postfork = 0;
1019} 1238}
1020 1239
1042} 1261}
1043 1262
1044void 1263void
1045ev_loop_fork (EV_P) 1264ev_loop_fork (EV_P)
1046{ 1265{
1047 postfork = 1; 1266 postfork = 1; /* must be in line with ev_default_fork */
1048} 1267}
1049 1268
1050#endif 1269#endif
1051 1270
1052#if EV_MULTIPLICITY 1271#if EV_MULTIPLICITY
1055#else 1274#else
1056int 1275int
1057ev_default_loop (unsigned int flags) 1276ev_default_loop (unsigned int flags)
1058#endif 1277#endif
1059{ 1278{
1060 if (sigpipe [0] == sigpipe [1])
1061 if (pipe (sigpipe))
1062 return 0;
1063
1064 if (!ev_default_loop_ptr) 1279 if (!ev_default_loop_ptr)
1065 { 1280 {
1066#if EV_MULTIPLICITY 1281#if EV_MULTIPLICITY
1067 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1068#else 1283#else
1071 1286
1072 loop_init (EV_A_ flags); 1287 loop_init (EV_A_ flags);
1073 1288
1074 if (ev_backend (EV_A)) 1289 if (ev_backend (EV_A))
1075 { 1290 {
1076 siginit (EV_A);
1077
1078#ifndef _WIN32 1291#ifndef _WIN32
1079 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
1080 ev_set_priority (&childev, EV_MAXPRI); 1293 ev_set_priority (&childev, EV_MAXPRI);
1081 ev_signal_start (EV_A_ &childev); 1294 ev_signal_start (EV_A_ &childev);
1082 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
1099#ifndef _WIN32 1312#ifndef _WIN32
1100 ev_ref (EV_A); /* child watcher */ 1313 ev_ref (EV_A); /* child watcher */
1101 ev_signal_stop (EV_A_ &childev); 1314 ev_signal_stop (EV_A_ &childev);
1102#endif 1315#endif
1103 1316
1104 ev_ref (EV_A); /* signal watcher */
1105 ev_io_stop (EV_A_ &sigev);
1106
1107 close (sigpipe [0]); sigpipe [0] = 0;
1108 close (sigpipe [1]); sigpipe [1] = 0;
1109
1110 loop_destroy (EV_A); 1317 loop_destroy (EV_A);
1111} 1318}
1112 1319
1113void 1320void
1114ev_default_fork (void) 1321ev_default_fork (void)
1116#if EV_MULTIPLICITY 1323#if EV_MULTIPLICITY
1117 struct ev_loop *loop = ev_default_loop_ptr; 1324 struct ev_loop *loop = ev_default_loop_ptr;
1118#endif 1325#endif
1119 1326
1120 if (backend) 1327 if (backend)
1121 postfork = 1; 1328 postfork = 1; /* must be in line with ev_loop_fork */
1122} 1329}
1123 1330
1124/*****************************************************************************/ 1331/*****************************************************************************/
1125 1332
1126int inline_size 1333void
1127any_pending (EV_P) 1334ev_invoke (EV_P_ void *w, int revents)
1128{ 1335{
1129 int pri; 1336 EV_CB_INVOKE ((W)w, revents);
1130
1131 for (pri = NUMPRI; pri--; )
1132 if (pendingcnt [pri])
1133 return 1;
1134
1135 return 0;
1136} 1337}
1137 1338
1138void inline_speed 1339void inline_speed
1139call_pending (EV_P) 1340call_pending (EV_P)
1140{ 1341{
1158void inline_size 1359void inline_size
1159timers_reify (EV_P) 1360timers_reify (EV_P)
1160{ 1361{
1161 while (timercnt && ((WT)timers [0])->at <= mn_now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
1162 { 1363 {
1163 ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
1164 1365
1165 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ 1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1166 1367
1167 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
1168 if (w->repeat) 1369 if (w->repeat)
1171 1372
1172 ((WT)w)->at += w->repeat; 1373 ((WT)w)->at += w->repeat;
1173 if (((WT)w)->at < mn_now) 1374 if (((WT)w)->at < mn_now)
1174 ((WT)w)->at = mn_now; 1375 ((WT)w)->at = mn_now;
1175 1376
1176 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
1177 } 1378 }
1178 else 1379 else
1179 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1180 1381
1181 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1186void inline_size 1387void inline_size
1187periodics_reify (EV_P) 1388periodics_reify (EV_P)
1188{ 1389{
1189 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1190 { 1391 {
1191 ev_periodic *w = periodics [0]; 1392 ev_periodic *w = (ev_periodic *)periodics [0];
1192 1393
1193 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1194 1395
1195 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
1196 if (w->reschedule_cb) 1397 if (w->reschedule_cb)
1197 { 1398 {
1198 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1199 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1200 downheap ((WT *)periodics, periodiccnt, 0); 1401 downheap (periodics, periodiccnt, 0);
1201 } 1402 }
1202 else if (w->interval) 1403 else if (w->interval)
1203 { 1404 {
1204 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1205 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1206 downheap ((WT *)periodics, periodiccnt, 0); 1408 downheap (periodics, periodiccnt, 0);
1207 } 1409 }
1208 else 1410 else
1209 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1210 1412
1211 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1218 int i; 1420 int i;
1219 1421
1220 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
1221 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
1222 { 1424 {
1223 ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
1224 1426
1225 if (w->reschedule_cb) 1427 if (w->reschedule_cb)
1226 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1227 else if (w->interval) 1429 else if (w->interval)
1228 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1229 } 1431 }
1230 1432
1231 /* now rebuild the heap */ 1433 /* now rebuild the heap */
1232 for (i = periodiccnt >> 1; i--; ) 1434 for (i = periodiccnt >> 1; i--; )
1233 downheap ((WT *)periodics, periodiccnt, i); 1435 downheap (periodics, periodiccnt, i);
1234} 1436}
1235#endif 1437#endif
1236 1438
1439#if EV_IDLE_ENABLE
1237int inline_size 1440void inline_size
1238time_update_monotonic (EV_P) 1441idle_reify (EV_P)
1239{ 1442{
1443 if (expect_false (idleall))
1444 {
1445 int pri;
1446
1447 for (pri = NUMPRI; pri--; )
1448 {
1449 if (pendingcnt [pri])
1450 break;
1451
1452 if (idlecnt [pri])
1453 {
1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1455 break;
1456 }
1457 }
1458 }
1459}
1460#endif
1461
1462void inline_speed
1463time_update (EV_P_ ev_tstamp max_block)
1464{
1465 int i;
1466
1467#if EV_USE_MONOTONIC
1468 if (expect_true (have_monotonic))
1469 {
1470 ev_tstamp odiff = rtmn_diff;
1471
1240 mn_now = get_clock (); 1472 mn_now = get_clock ();
1241 1473
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1475 /* interpolate in the meantime */
1242 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1476 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1243 { 1477 {
1244 ev_rt_now = rtmn_diff + mn_now; 1478 ev_rt_now = rtmn_diff + mn_now;
1245 return 0; 1479 return;
1246 } 1480 }
1247 else 1481
1248 {
1249 now_floor = mn_now; 1482 now_floor = mn_now;
1250 ev_rt_now = ev_time (); 1483 ev_rt_now = ev_time ();
1251 return 1;
1252 }
1253}
1254 1484
1255void inline_size 1485 /* loop a few times, before making important decisions.
1256time_update (EV_P) 1486 * on the choice of "4": one iteration isn't enough,
1257{ 1487 * in case we get preempted during the calls to
1258 int i; 1488 * ev_time and get_clock. a second call is almost guaranteed
1259 1489 * to succeed in that case, though. and looping a few more times
1260#if EV_USE_MONOTONIC 1490 * doesn't hurt either as we only do this on time-jumps or
1261 if (expect_true (have_monotonic)) 1491 * in the unlikely event of having been preempted here.
1262 { 1492 */
1263 if (time_update_monotonic (EV_A)) 1493 for (i = 4; --i; )
1264 { 1494 {
1265 ev_tstamp odiff = rtmn_diff;
1266
1267 /* loop a few times, before making important decisions.
1268 * on the choice of "4": one iteration isn't enough,
1269 * in case we get preempted during the calls to
1270 * ev_time and get_clock. a second call is almost guarenteed
1271 * to succeed in that case, though. and looping a few more times
1272 * doesn't hurt either as we only do this on time-jumps or
1273 * in the unlikely event of getting preempted here.
1274 */
1275 for (i = 4; --i; )
1276 {
1277 rtmn_diff = ev_rt_now - mn_now; 1495 rtmn_diff = ev_rt_now - mn_now;
1278 1496
1279 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1280 return; /* all is well */ 1498 return; /* all is well */
1281 1499
1282 ev_rt_now = ev_time (); 1500 ev_rt_now = ev_time ();
1283 mn_now = get_clock (); 1501 mn_now = get_clock ();
1284 now_floor = mn_now; 1502 now_floor = mn_now;
1285 } 1503 }
1286 1504
1287# if EV_PERIODIC_ENABLE 1505# if EV_PERIODIC_ENABLE
1288 periodics_reschedule (EV_A); 1506 periodics_reschedule (EV_A);
1289# endif 1507# endif
1290 /* no timer adjustment, as the monotonic clock doesn't jump */ 1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1291 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292 }
1293 } 1510 }
1294 else 1511 else
1295#endif 1512#endif
1296 { 1513 {
1297 ev_rt_now = ev_time (); 1514 ev_rt_now = ev_time ();
1298 1515
1299 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1300 { 1517 {
1301#if EV_PERIODIC_ENABLE 1518#if EV_PERIODIC_ENABLE
1302 periodics_reschedule (EV_A); 1519 periodics_reschedule (EV_A);
1303#endif 1520#endif
1304
1305 /* adjust timers. this is easy, as the offset is the same for all */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
1306 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
1307 ((WT)timers [i])->at += ev_rt_now - mn_now; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
1308 } 1524 }
1309 1525
1310 mn_now = ev_rt_now; 1526 mn_now = ev_rt_now;
1330{ 1546{
1331 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1547 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1332 ? EVUNLOOP_ONE 1548 ? EVUNLOOP_ONE
1333 : EVUNLOOP_CANCEL; 1549 : EVUNLOOP_CANCEL;
1334 1550
1335 while (activecnt) 1551 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1552
1553 do
1336 { 1554 {
1337 /* we might have forked, so reify kernel state if necessary */ 1555#ifndef _WIN32
1556 if (expect_false (curpid)) /* penalise the forking check even more */
1557 if (expect_false (getpid () != curpid))
1558 {
1559 curpid = getpid ();
1560 postfork = 1;
1561 }
1562#endif
1563
1338 #if EV_FORK_ENABLE 1564#if EV_FORK_ENABLE
1565 /* we might have forked, so queue fork handlers */
1339 if (expect_false (postfork)) 1566 if (expect_false (postfork))
1340 if (forkcnt) 1567 if (forkcnt)
1341 { 1568 {
1342 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1569 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343 call_pending (EV_A); 1570 call_pending (EV_A);
1344 } 1571 }
1345 #endif 1572#endif
1346 1573
1347 /* queue check watchers (and execute them) */ 1574 /* queue prepare watchers (and execute them) */
1348 if (expect_false (preparecnt)) 1575 if (expect_false (preparecnt))
1349 { 1576 {
1350 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351 call_pending (EV_A); 1578 call_pending (EV_A);
1352 } 1579 }
1353 1580
1581 if (expect_false (!activecnt))
1582 break;
1583
1354 /* we might have forked, so reify kernel state if necessary */ 1584 /* we might have forked, so reify kernel state if necessary */
1355 if (expect_false (postfork)) 1585 if (expect_false (postfork))
1356 loop_fork (EV_A); 1586 loop_fork (EV_A);
1357 1587
1358 /* update fd-related kernel structures */ 1588 /* update fd-related kernel structures */
1359 fd_reify (EV_A); 1589 fd_reify (EV_A);
1360 1590
1361 /* calculate blocking time */ 1591 /* calculate blocking time */
1362 { 1592 {
1363 double block; 1593 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.;
1364 1595
1365 if (flags & EVLOOP_NONBLOCK || idlecnt) 1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1366 block = 0.; /* do not block at all */
1367 else
1368 { 1597 {
1369 /* update time to cancel out callback processing overhead */ 1598 /* update time to cancel out callback processing overhead */
1370#if EV_USE_MONOTONIC
1371 if (expect_true (have_monotonic))
1372 time_update_monotonic (EV_A); 1599 time_update (EV_A_ 1e100);
1373 else
1374#endif
1375 {
1376 ev_rt_now = ev_time ();
1377 mn_now = ev_rt_now;
1378 }
1379 1600
1380 block = MAX_BLOCKTIME; 1601 waittime = MAX_BLOCKTIME;
1381 1602
1382 if (timercnt) 1603 if (timercnt)
1383 { 1604 {
1384 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1385 if (block > to) block = to; 1606 if (waittime > to) waittime = to;
1386 } 1607 }
1387 1608
1388#if EV_PERIODIC_ENABLE 1609#if EV_PERIODIC_ENABLE
1389 if (periodiccnt) 1610 if (periodiccnt)
1390 { 1611 {
1391 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1392 if (block > to) block = to; 1613 if (waittime > to) waittime = to;
1393 } 1614 }
1394#endif 1615#endif
1395 1616
1396 if (expect_false (block < 0.)) block = 0.; 1617 if (expect_false (waittime < timeout_blocktime))
1618 waittime = timeout_blocktime;
1619
1620 sleeptime = waittime - backend_fudge;
1621
1622 if (expect_true (sleeptime > io_blocktime))
1623 sleeptime = io_blocktime;
1624
1625 if (sleeptime)
1626 {
1627 ev_sleep (sleeptime);
1628 waittime -= sleeptime;
1629 }
1397 } 1630 }
1398 1631
1632 ++loop_count;
1399 backend_poll (EV_A_ block); 1633 backend_poll (EV_A_ waittime);
1634
1635 /* update ev_rt_now, do magic */
1636 time_update (EV_A_ waittime + sleeptime);
1400 } 1637 }
1401
1402 /* update ev_rt_now, do magic */
1403 time_update (EV_A);
1404 1638
1405 /* queue pending timers and reschedule them */ 1639 /* queue pending timers and reschedule them */
1406 timers_reify (EV_A); /* relative timers called last */ 1640 timers_reify (EV_A); /* relative timers called last */
1407#if EV_PERIODIC_ENABLE 1641#if EV_PERIODIC_ENABLE
1408 periodics_reify (EV_A); /* absolute timers called first */ 1642 periodics_reify (EV_A); /* absolute timers called first */
1409#endif 1643#endif
1410 1644
1645#if EV_IDLE_ENABLE
1411 /* queue idle watchers unless other events are pending */ 1646 /* queue idle watchers unless other events are pending */
1412 if (idlecnt && !any_pending (EV_A)) 1647 idle_reify (EV_A);
1413 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1648#endif
1414 1649
1415 /* queue check watchers, to be executed first */ 1650 /* queue check watchers, to be executed first */
1416 if (expect_false (checkcnt)) 1651 if (expect_false (checkcnt))
1417 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418 1653
1419 call_pending (EV_A); 1654 call_pending (EV_A);
1420 1655
1421 if (expect_false (loop_done))
1422 break;
1423 } 1656 }
1657 while (expect_true (activecnt && !loop_done));
1424 1658
1425 if (loop_done == EVUNLOOP_ONE) 1659 if (loop_done == EVUNLOOP_ONE)
1426 loop_done = EVUNLOOP_CANCEL; 1660 loop_done = EVUNLOOP_CANCEL;
1427} 1661}
1428 1662
1455 head = &(*head)->next; 1689 head = &(*head)->next;
1456 } 1690 }
1457} 1691}
1458 1692
1459void inline_speed 1693void inline_speed
1460ev_clear_pending (EV_P_ W w) 1694clear_pending (EV_P_ W w)
1461{ 1695{
1462 if (w->pending) 1696 if (w->pending)
1463 { 1697 {
1464 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1698 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465 w->pending = 0; 1699 w->pending = 0;
1466 } 1700 }
1467} 1701}
1468 1702
1703int
1704ev_clear_pending (EV_P_ void *w)
1705{
1706 W w_ = (W)w;
1707 int pending = w_->pending;
1708
1709 if (expect_true (pending))
1710 {
1711 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1712 w_->pending = 0;
1713 p->w = 0;
1714 return p->events;
1715 }
1716 else
1717 return 0;
1718}
1719
1720void inline_size
1721pri_adjust (EV_P_ W w)
1722{
1723 int pri = w->priority;
1724 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1725 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1726 w->priority = pri;
1727}
1728
1469void inline_speed 1729void inline_speed
1470ev_start (EV_P_ W w, int active) 1730ev_start (EV_P_ W w, int active)
1471{ 1731{
1472 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1732 pri_adjust (EV_A_ w);
1473 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475 w->active = active; 1733 w->active = active;
1476 ev_ref (EV_A); 1734 ev_ref (EV_A);
1477} 1735}
1478 1736
1479void inline_size 1737void inline_size
1483 w->active = 0; 1741 w->active = 0;
1484} 1742}
1485 1743
1486/*****************************************************************************/ 1744/*****************************************************************************/
1487 1745
1488void 1746void noinline
1489ev_io_start (EV_P_ ev_io *w) 1747ev_io_start (EV_P_ ev_io *w)
1490{ 1748{
1491 int fd = w->fd; 1749 int fd = w->fd;
1492 1750
1493 if (expect_false (ev_is_active (w))) 1751 if (expect_false (ev_is_active (w)))
1495 1753
1496 assert (("ev_io_start called with negative fd", fd >= 0)); 1754 assert (("ev_io_start called with negative fd", fd >= 0));
1497 1755
1498 ev_start (EV_A_ (W)w, 1); 1756 ev_start (EV_A_ (W)w, 1);
1499 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1500 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1758 wlist_add (&anfds[fd].head, (WL)w);
1501 1759
1502 fd_change (EV_A_ fd); 1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1761 w->events &= ~EV_IOFDSET;
1503} 1762}
1504 1763
1505void 1764void noinline
1506ev_io_stop (EV_P_ ev_io *w) 1765ev_io_stop (EV_P_ ev_io *w)
1507{ 1766{
1508 ev_clear_pending (EV_A_ (W)w); 1767 clear_pending (EV_A_ (W)w);
1509 if (expect_false (!ev_is_active (w))) 1768 if (expect_false (!ev_is_active (w)))
1510 return; 1769 return;
1511 1770
1512 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513 1772
1514 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1773 wlist_del (&anfds[w->fd].head, (WL)w);
1515 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1516 1775
1517 fd_change (EV_A_ w->fd); 1776 fd_change (EV_A_ w->fd, 1);
1518} 1777}
1519 1778
1520void 1779void noinline
1521ev_timer_start (EV_P_ ev_timer *w) 1780ev_timer_start (EV_P_ ev_timer *w)
1522{ 1781{
1523 if (expect_false (ev_is_active (w))) 1782 if (expect_false (ev_is_active (w)))
1524 return; 1783 return;
1525 1784
1526 ((WT)w)->at += mn_now; 1785 ((WT)w)->at += mn_now;
1527 1786
1528 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1787 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1529 1788
1530 ev_start (EV_A_ (W)w, ++timercnt); 1789 ev_start (EV_A_ (W)w, ++timercnt);
1531 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1532 timers [timercnt - 1] = w; 1791 timers [timercnt - 1] = (WT)w;
1533 upheap ((WT *)timers, timercnt - 1); 1792 upheap (timers, timercnt - 1);
1534 1793
1535 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1536} 1795}
1537 1796
1538void 1797void noinline
1539ev_timer_stop (EV_P_ ev_timer *w) 1798ev_timer_stop (EV_P_ ev_timer *w)
1540{ 1799{
1541 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1542 if (expect_false (!ev_is_active (w))) 1801 if (expect_false (!ev_is_active (w)))
1543 return; 1802 return;
1544 1803
1545 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1804 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1546 1805
1547 { 1806 {
1548 int active = ((W)w)->active; 1807 int active = ((W)w)->active;
1549 1808
1550 if (expect_true (--active < --timercnt)) 1809 if (expect_true (--active < --timercnt))
1551 { 1810 {
1552 timers [active] = timers [timercnt]; 1811 timers [active] = timers [timercnt];
1553 adjustheap ((WT *)timers, timercnt, active); 1812 adjustheap (timers, timercnt, active);
1554 } 1813 }
1555 } 1814 }
1556 1815
1557 ((WT)w)->at -= mn_now; 1816 ((WT)w)->at -= mn_now;
1558 1817
1559 ev_stop (EV_A_ (W)w); 1818 ev_stop (EV_A_ (W)w);
1560} 1819}
1561 1820
1562void 1821void noinline
1563ev_timer_again (EV_P_ ev_timer *w) 1822ev_timer_again (EV_P_ ev_timer *w)
1564{ 1823{
1565 if (ev_is_active (w)) 1824 if (ev_is_active (w))
1566 { 1825 {
1567 if (w->repeat) 1826 if (w->repeat)
1568 { 1827 {
1569 ((WT)w)->at = mn_now + w->repeat; 1828 ((WT)w)->at = mn_now + w->repeat;
1570 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1829 adjustheap (timers, timercnt, ((W)w)->active - 1);
1571 } 1830 }
1572 else 1831 else
1573 ev_timer_stop (EV_A_ w); 1832 ev_timer_stop (EV_A_ w);
1574 } 1833 }
1575 else if (w->repeat) 1834 else if (w->repeat)
1578 ev_timer_start (EV_A_ w); 1837 ev_timer_start (EV_A_ w);
1579 } 1838 }
1580} 1839}
1581 1840
1582#if EV_PERIODIC_ENABLE 1841#if EV_PERIODIC_ENABLE
1583void 1842void noinline
1584ev_periodic_start (EV_P_ ev_periodic *w) 1843ev_periodic_start (EV_P_ ev_periodic *w)
1585{ 1844{
1586 if (expect_false (ev_is_active (w))) 1845 if (expect_false (ev_is_active (w)))
1587 return; 1846 return;
1588 1847
1590 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1591 else if (w->interval) 1850 else if (w->interval)
1592 { 1851 {
1593 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1594 /* this formula differs from the one in periodic_reify because we do not always round up */ 1853 /* this formula differs from the one in periodic_reify because we do not always round up */
1595 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1854 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1596 } 1855 }
1856 else
1857 ((WT)w)->at = w->offset;
1597 1858
1598 ev_start (EV_A_ (W)w, ++periodiccnt); 1859 ev_start (EV_A_ (W)w, ++periodiccnt);
1599 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1600 periodics [periodiccnt - 1] = w; 1861 periodics [periodiccnt - 1] = (WT)w;
1601 upheap ((WT *)periodics, periodiccnt - 1); 1862 upheap (periodics, periodiccnt - 1);
1602 1863
1603 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1604} 1865}
1605 1866
1606void 1867void noinline
1607ev_periodic_stop (EV_P_ ev_periodic *w) 1868ev_periodic_stop (EV_P_ ev_periodic *w)
1608{ 1869{
1609 ev_clear_pending (EV_A_ (W)w); 1870 clear_pending (EV_A_ (W)w);
1610 if (expect_false (!ev_is_active (w))) 1871 if (expect_false (!ev_is_active (w)))
1611 return; 1872 return;
1612 1873
1613 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1874 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1614 1875
1615 { 1876 {
1616 int active = ((W)w)->active; 1877 int active = ((W)w)->active;
1617 1878
1618 if (expect_true (--active < --periodiccnt)) 1879 if (expect_true (--active < --periodiccnt))
1619 { 1880 {
1620 periodics [active] = periodics [periodiccnt]; 1881 periodics [active] = periodics [periodiccnt];
1621 adjustheap ((WT *)periodics, periodiccnt, active); 1882 adjustheap (periodics, periodiccnt, active);
1622 } 1883 }
1623 } 1884 }
1624 1885
1625 ev_stop (EV_A_ (W)w); 1886 ev_stop (EV_A_ (W)w);
1626} 1887}
1627 1888
1628void 1889void noinline
1629ev_periodic_again (EV_P_ ev_periodic *w) 1890ev_periodic_again (EV_P_ ev_periodic *w)
1630{ 1891{
1631 /* TODO: use adjustheap and recalculation */ 1892 /* TODO: use adjustheap and recalculation */
1632 ev_periodic_stop (EV_A_ w); 1893 ev_periodic_stop (EV_A_ w);
1633 ev_periodic_start (EV_A_ w); 1894 ev_periodic_start (EV_A_ w);
1636 1897
1637#ifndef SA_RESTART 1898#ifndef SA_RESTART
1638# define SA_RESTART 0 1899# define SA_RESTART 0
1639#endif 1900#endif
1640 1901
1641void 1902void noinline
1642ev_signal_start (EV_P_ ev_signal *w) 1903ev_signal_start (EV_P_ ev_signal *w)
1643{ 1904{
1644#if EV_MULTIPLICITY 1905#if EV_MULTIPLICITY
1645 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646#endif 1907#endif
1647 if (expect_false (ev_is_active (w))) 1908 if (expect_false (ev_is_active (w)))
1648 return; 1909 return;
1649 1910
1650 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1911 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1651 1912
1913 evpipe_init (EV_A);
1914
1915 {
1916#ifndef _WIN32
1917 sigset_t full, prev;
1918 sigfillset (&full);
1919 sigprocmask (SIG_SETMASK, &full, &prev);
1920#endif
1921
1922 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1923
1924#ifndef _WIN32
1925 sigprocmask (SIG_SETMASK, &prev, 0);
1926#endif
1927 }
1928
1652 ev_start (EV_A_ (W)w, 1); 1929 ev_start (EV_A_ (W)w, 1);
1653 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1654 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1930 wlist_add (&signals [w->signum - 1].head, (WL)w);
1655 1931
1656 if (!((WL)w)->next) 1932 if (!((WL)w)->next)
1657 { 1933 {
1658#if _WIN32 1934#if _WIN32
1659 signal (w->signum, sighandler); 1935 signal (w->signum, sighandler);
1665 sigaction (w->signum, &sa, 0); 1941 sigaction (w->signum, &sa, 0);
1666#endif 1942#endif
1667 } 1943 }
1668} 1944}
1669 1945
1670void 1946void noinline
1671ev_signal_stop (EV_P_ ev_signal *w) 1947ev_signal_stop (EV_P_ ev_signal *w)
1672{ 1948{
1673 ev_clear_pending (EV_A_ (W)w); 1949 clear_pending (EV_A_ (W)w);
1674 if (expect_false (!ev_is_active (w))) 1950 if (expect_false (!ev_is_active (w)))
1675 return; 1951 return;
1676 1952
1677 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1953 wlist_del (&signals [w->signum - 1].head, (WL)w);
1678 ev_stop (EV_A_ (W)w); 1954 ev_stop (EV_A_ (W)w);
1679 1955
1680 if (!signals [w->signum - 1].head) 1956 if (!signals [w->signum - 1].head)
1681 signal (w->signum, SIG_DFL); 1957 signal (w->signum, SIG_DFL);
1682} 1958}
1689#endif 1965#endif
1690 if (expect_false (ev_is_active (w))) 1966 if (expect_false (ev_is_active (w)))
1691 return; 1967 return;
1692 1968
1693 ev_start (EV_A_ (W)w, 1); 1969 ev_start (EV_A_ (W)w, 1);
1694 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1695} 1971}
1696 1972
1697void 1973void
1698ev_child_stop (EV_P_ ev_child *w) 1974ev_child_stop (EV_P_ ev_child *w)
1699{ 1975{
1700 ev_clear_pending (EV_A_ (W)w); 1976 clear_pending (EV_A_ (W)w);
1701 if (expect_false (!ev_is_active (w))) 1977 if (expect_false (!ev_is_active (w)))
1702 return; 1978 return;
1703 1979
1704 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705 ev_stop (EV_A_ (W)w); 1981 ev_stop (EV_A_ (W)w);
1706} 1982}
1707 1983
1708#if EV_STAT_ENABLE 1984#if EV_STAT_ENABLE
1709 1985
1713# endif 1989# endif
1714 1990
1715#define DEF_STAT_INTERVAL 5.0074891 1991#define DEF_STAT_INTERVAL 5.0074891
1716#define MIN_STAT_INTERVAL 0.1074891 1992#define MIN_STAT_INTERVAL 0.1074891
1717 1993
1718void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 1994static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719 1995
1720#if EV_USE_INOTIFY 1996#if EV_USE_INOTIFY
1721# define EV_INOTIFY_BUFSIZE 8192 1997# define EV_INOTIFY_BUFSIZE 8192
1722 1998
1723static void noinline 1999static void noinline
1831 ev_set_priority (&fs_w, EV_MAXPRI); 2107 ev_set_priority (&fs_w, EV_MAXPRI);
1832 ev_io_start (EV_A_ &fs_w); 2108 ev_io_start (EV_A_ &fs_w);
1833 } 2109 }
1834} 2110}
1835 2111
2112void inline_size
2113infy_fork (EV_P)
2114{
2115 int slot;
2116
2117 if (fs_fd < 0)
2118 return;
2119
2120 close (fs_fd);
2121 fs_fd = inotify_init ();
2122
2123 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2124 {
2125 WL w_ = fs_hash [slot].head;
2126 fs_hash [slot].head = 0;
2127
2128 while (w_)
2129 {
2130 ev_stat *w = (ev_stat *)w_;
2131 w_ = w_->next; /* lets us add this watcher */
2132
2133 w->wd = -1;
2134
2135 if (fs_fd >= 0)
2136 infy_add (EV_A_ w); /* re-add, no matter what */
2137 else
2138 ev_timer_start (EV_A_ &w->timer);
2139 }
2140
2141 }
2142}
2143
1836#endif 2144#endif
1837 2145
1838void 2146void
1839ev_stat_stat (EV_P_ ev_stat *w) 2147ev_stat_stat (EV_P_ ev_stat *w)
1840{ 2148{
1842 w->attr.st_nlink = 0; 2150 w->attr.st_nlink = 0;
1843 else if (!w->attr.st_nlink) 2151 else if (!w->attr.st_nlink)
1844 w->attr.st_nlink = 1; 2152 w->attr.st_nlink = 1;
1845} 2153}
1846 2154
1847void noinline 2155static void noinline
1848stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2156stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1849{ 2157{
1850 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2158 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1851 2159
1852 /* we copy this here each the time so that */ 2160 /* we copy this here each the time so that */
1853 /* prev has the old value when the callback gets invoked */ 2161 /* prev has the old value when the callback gets invoked */
1854 w->prev = w->attr; 2162 w->prev = w->attr;
1855 ev_stat_stat (EV_A_ w); 2163 ev_stat_stat (EV_A_ w);
1856 2164
1857 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2165 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2166 if (
2167 w->prev.st_dev != w->attr.st_dev
2168 || w->prev.st_ino != w->attr.st_ino
2169 || w->prev.st_mode != w->attr.st_mode
2170 || w->prev.st_nlink != w->attr.st_nlink
2171 || w->prev.st_uid != w->attr.st_uid
2172 || w->prev.st_gid != w->attr.st_gid
2173 || w->prev.st_rdev != w->attr.st_rdev
2174 || w->prev.st_size != w->attr.st_size
2175 || w->prev.st_atime != w->attr.st_atime
2176 || w->prev.st_mtime != w->attr.st_mtime
2177 || w->prev.st_ctime != w->attr.st_ctime
1858 { 2178 ) {
1859 #if EV_USE_INOTIFY 2179 #if EV_USE_INOTIFY
1860 infy_del (EV_A_ w); 2180 infy_del (EV_A_ w);
1861 infy_add (EV_A_ w); 2181 infy_add (EV_A_ w);
1862 ev_stat_stat (EV_A_ w); /* avoid race... */ 2182 ev_stat_stat (EV_A_ w); /* avoid race... */
1863 #endif 2183 #endif
1897} 2217}
1898 2218
1899void 2219void
1900ev_stat_stop (EV_P_ ev_stat *w) 2220ev_stat_stop (EV_P_ ev_stat *w)
1901{ 2221{
1902 ev_clear_pending (EV_A_ (W)w); 2222 clear_pending (EV_A_ (W)w);
1903 if (expect_false (!ev_is_active (w))) 2223 if (expect_false (!ev_is_active (w)))
1904 return; 2224 return;
1905 2225
1906#if EV_USE_INOTIFY 2226#if EV_USE_INOTIFY
1907 infy_del (EV_A_ w); 2227 infy_del (EV_A_ w);
1910 2230
1911 ev_stop (EV_A_ (W)w); 2231 ev_stop (EV_A_ (W)w);
1912} 2232}
1913#endif 2233#endif
1914 2234
2235#if EV_IDLE_ENABLE
1915void 2236void
1916ev_idle_start (EV_P_ ev_idle *w) 2237ev_idle_start (EV_P_ ev_idle *w)
1917{ 2238{
1918 if (expect_false (ev_is_active (w))) 2239 if (expect_false (ev_is_active (w)))
1919 return; 2240 return;
1920 2241
2242 pri_adjust (EV_A_ (W)w);
2243
2244 {
2245 int active = ++idlecnt [ABSPRI (w)];
2246
2247 ++idleall;
1921 ev_start (EV_A_ (W)w, ++idlecnt); 2248 ev_start (EV_A_ (W)w, active);
2249
1922 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2250 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1923 idles [idlecnt - 1] = w; 2251 idles [ABSPRI (w)][active - 1] = w;
2252 }
1924} 2253}
1925 2254
1926void 2255void
1927ev_idle_stop (EV_P_ ev_idle *w) 2256ev_idle_stop (EV_P_ ev_idle *w)
1928{ 2257{
1929 ev_clear_pending (EV_A_ (W)w); 2258 clear_pending (EV_A_ (W)w);
1930 if (expect_false (!ev_is_active (w))) 2259 if (expect_false (!ev_is_active (w)))
1931 return; 2260 return;
1932 2261
1933 { 2262 {
1934 int active = ((W)w)->active; 2263 int active = ((W)w)->active;
1935 idles [active - 1] = idles [--idlecnt]; 2264
2265 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1936 ((W)idles [active - 1])->active = active; 2266 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2267
2268 ev_stop (EV_A_ (W)w);
2269 --idleall;
1937 } 2270 }
1938
1939 ev_stop (EV_A_ (W)w);
1940} 2271}
2272#endif
1941 2273
1942void 2274void
1943ev_prepare_start (EV_P_ ev_prepare *w) 2275ev_prepare_start (EV_P_ ev_prepare *w)
1944{ 2276{
1945 if (expect_false (ev_is_active (w))) 2277 if (expect_false (ev_is_active (w)))
1951} 2283}
1952 2284
1953void 2285void
1954ev_prepare_stop (EV_P_ ev_prepare *w) 2286ev_prepare_stop (EV_P_ ev_prepare *w)
1955{ 2287{
1956 ev_clear_pending (EV_A_ (W)w); 2288 clear_pending (EV_A_ (W)w);
1957 if (expect_false (!ev_is_active (w))) 2289 if (expect_false (!ev_is_active (w)))
1958 return; 2290 return;
1959 2291
1960 { 2292 {
1961 int active = ((W)w)->active; 2293 int active = ((W)w)->active;
1978} 2310}
1979 2311
1980void 2312void
1981ev_check_stop (EV_P_ ev_check *w) 2313ev_check_stop (EV_P_ ev_check *w)
1982{ 2314{
1983 ev_clear_pending (EV_A_ (W)w); 2315 clear_pending (EV_A_ (W)w);
1984 if (expect_false (!ev_is_active (w))) 2316 if (expect_false (!ev_is_active (w)))
1985 return; 2317 return;
1986 2318
1987 { 2319 {
1988 int active = ((W)w)->active; 2320 int active = ((W)w)->active;
1995 2327
1996#if EV_EMBED_ENABLE 2328#if EV_EMBED_ENABLE
1997void noinline 2329void noinline
1998ev_embed_sweep (EV_P_ ev_embed *w) 2330ev_embed_sweep (EV_P_ ev_embed *w)
1999{ 2331{
2000 ev_loop (w->loop, EVLOOP_NONBLOCK); 2332 ev_loop (w->other, EVLOOP_NONBLOCK);
2001} 2333}
2002 2334
2003static void 2335static void
2004embed_cb (EV_P_ ev_io *io, int revents) 2336embed_io_cb (EV_P_ ev_io *io, int revents)
2005{ 2337{
2006 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2338 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2007 2339
2008 if (ev_cb (w)) 2340 if (ev_cb (w))
2009 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2341 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2010 else 2342 else
2011 ev_embed_sweep (loop, w); 2343 ev_loop (w->other, EVLOOP_NONBLOCK);
2012} 2344}
2345
2346static void
2347embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2348{
2349 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2350
2351 {
2352 struct ev_loop *loop = w->other;
2353
2354 while (fdchangecnt)
2355 {
2356 fd_reify (EV_A);
2357 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2358 }
2359 }
2360}
2361
2362#if 0
2363static void
2364embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2365{
2366 ev_idle_stop (EV_A_ idle);
2367}
2368#endif
2013 2369
2014void 2370void
2015ev_embed_start (EV_P_ ev_embed *w) 2371ev_embed_start (EV_P_ ev_embed *w)
2016{ 2372{
2017 if (expect_false (ev_is_active (w))) 2373 if (expect_false (ev_is_active (w)))
2018 return; 2374 return;
2019 2375
2020 { 2376 {
2021 struct ev_loop *loop = w->loop; 2377 struct ev_loop *loop = w->other;
2022 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2378 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2023 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2379 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2024 } 2380 }
2025 2381
2026 ev_set_priority (&w->io, ev_priority (w)); 2382 ev_set_priority (&w->io, ev_priority (w));
2027 ev_io_start (EV_A_ &w->io); 2383 ev_io_start (EV_A_ &w->io);
2028 2384
2385 ev_prepare_init (&w->prepare, embed_prepare_cb);
2386 ev_set_priority (&w->prepare, EV_MINPRI);
2387 ev_prepare_start (EV_A_ &w->prepare);
2388
2389 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2390
2029 ev_start (EV_A_ (W)w, 1); 2391 ev_start (EV_A_ (W)w, 1);
2030} 2392}
2031 2393
2032void 2394void
2033ev_embed_stop (EV_P_ ev_embed *w) 2395ev_embed_stop (EV_P_ ev_embed *w)
2034{ 2396{
2035 ev_clear_pending (EV_A_ (W)w); 2397 clear_pending (EV_A_ (W)w);
2036 if (expect_false (!ev_is_active (w))) 2398 if (expect_false (!ev_is_active (w)))
2037 return; 2399 return;
2038 2400
2039 ev_io_stop (EV_A_ &w->io); 2401 ev_io_stop (EV_A_ &w->io);
2402 ev_prepare_stop (EV_A_ &w->prepare);
2040 2403
2041 ev_stop (EV_A_ (W)w); 2404 ev_stop (EV_A_ (W)w);
2042} 2405}
2043#endif 2406#endif
2044 2407
2055} 2418}
2056 2419
2057void 2420void
2058ev_fork_stop (EV_P_ ev_fork *w) 2421ev_fork_stop (EV_P_ ev_fork *w)
2059{ 2422{
2060 ev_clear_pending (EV_A_ (W)w); 2423 clear_pending (EV_A_ (W)w);
2061 if (expect_false (!ev_is_active (w))) 2424 if (expect_false (!ev_is_active (w)))
2062 return; 2425 return;
2063 2426
2064 { 2427 {
2065 int active = ((W)w)->active; 2428 int active = ((W)w)->active;
2069 2432
2070 ev_stop (EV_A_ (W)w); 2433 ev_stop (EV_A_ (W)w);
2071} 2434}
2072#endif 2435#endif
2073 2436
2437#if EV_ASYNC_ENABLE
2438void
2439ev_async_start (EV_P_ ev_async *w)
2440{
2441 if (expect_false (ev_is_active (w)))
2442 return;
2443
2444 evpipe_init (EV_A);
2445
2446 ev_start (EV_A_ (W)w, ++asynccnt);
2447 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2448 asyncs [asynccnt - 1] = w;
2449}
2450
2451void
2452ev_async_stop (EV_P_ ev_async *w)
2453{
2454 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w)))
2456 return;
2457
2458 {
2459 int active = ((W)w)->active;
2460 asyncs [active - 1] = asyncs [--asynccnt];
2461 ((W)asyncs [active - 1])->active = active;
2462 }
2463
2464 ev_stop (EV_A_ (W)w);
2465}
2466
2467void
2468ev_async_send (EV_P_ ev_async *w)
2469{
2470 w->sent = 1;
2471 evpipe_write (EV_A_ &gotasync);
2472}
2473#endif
2474
2074/*****************************************************************************/ 2475/*****************************************************************************/
2075 2476
2076struct ev_once 2477struct ev_once
2077{ 2478{
2078 ev_io io; 2479 ev_io io;
2133 ev_timer_set (&once->to, timeout, 0.); 2534 ev_timer_set (&once->to, timeout, 0.);
2134 ev_timer_start (EV_A_ &once->to); 2535 ev_timer_start (EV_A_ &once->to);
2135 } 2536 }
2136} 2537}
2137 2538
2539#if EV_MULTIPLICITY
2540 #include "ev_wrap.h"
2541#endif
2542
2138#ifdef __cplusplus 2543#ifdef __cplusplus
2139} 2544}
2140#endif 2545#endif
2141 2546

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