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Comparing libev/ev.c (file contents):
Revision 1.168 by root, Sat Dec 8 14:12:07 2007 UTC vs.
Revision 1.207 by root, Thu Jan 31 13:10:56 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)w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 285
248#define EMPTY /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
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
396{ 438{
397 return ev_rt_now; 439 return ev_rt_now;
398} 440}
399#endif 441#endif
400 442
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
401int inline_size 470int inline_size
402array_nextsize (int elem, int cur, int cnt) 471array_nextsize (int elem, int cur, int cnt)
403{ 472{
404 int ncur = cur + 1; 473 int ncur = cur + 1;
405 474
417 } 486 }
418 487
419 return ncur; 488 return ncur;
420} 489}
421 490
422inline_speed void * 491static noinline void *
423array_realloc (int elem, void *base, int *cur, int cnt) 492array_realloc (int elem, void *base, int *cur, int cnt)
424{ 493{
425 *cur = array_nextsize (elem, *cur, cnt); 494 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur); 495 return ev_realloc (base, elem * *cur);
427} 496}
452 521
453void noinline 522void noinline
454ev_feed_event (EV_P_ void *w, int revents) 523ev_feed_event (EV_P_ void *w, int revents)
455{ 524{
456 W w_ = (W)w; 525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
457 527
458 if (expect_false (w_->pending)) 528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
459 { 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_;
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 535 pendings [pri][w_->pending - 1].events = revents;
461 return;
462 } 536 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468} 537}
469 538
470void inline_size 539void inline_speed
471queue_events (EV_P_ W *events, int eventcnt, int type) 540queue_events (EV_P_ W *events, int eventcnt, int type)
472{ 541{
473 int i; 542 int i;
474 543
475 for (i = 0; i < eventcnt; ++i) 544 for (i = 0; i < eventcnt; ++i)
522 { 591 {
523 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
524 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
525 ev_io *w; 594 ev_io *w;
526 595
527 int events = 0; 596 unsigned char events = 0;
528 597
529 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)
530 events |= w->events; 599 events |= (unsigned char)w->events;
531 600
532#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
533 if (events) 602 if (events)
534 { 603 {
535 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
536 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
537 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));
538 } 611 }
539#endif 612#endif
540 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
541 anfd->reify = 0; 618 anfd->reify = 0;
542
543 backend_modify (EV_A_ fd, anfd->events, events);
544 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 }
545 } 624 }
546 625
547 fdchangecnt = 0; 626 fdchangecnt = 0;
548} 627}
549 628
550void inline_size 629void inline_size
551fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
552{ 631{
553 if (expect_false (anfds [fd].reify)) 632 unsigned char reify = anfds [fd].reify;
554 return;
555
556 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
557 634
635 if (expect_true (!reify))
636 {
558 ++fdchangecnt; 637 ++fdchangecnt;
559 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
560 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
561} 641}
562 642
563void inline_speed 643void inline_speed
564fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
565{ 645{
616 696
617 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
618 if (anfds [fd].events) 698 if (anfds [fd].events)
619 { 699 {
620 anfds [fd].events = 0; 700 anfds [fd].events = 0;
621 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
622 } 702 }
623} 703}
624 704
625/*****************************************************************************/ 705/*****************************************************************************/
626 706
627void inline_speed 707void inline_speed
628upheap (WT *heap, int k) 708upheap (WT *heap, int k)
629{ 709{
630 WT w = heap [k]; 710 WT w = heap [k];
631 711
632 while (k && heap [k >> 1]->at > w->at) 712 while (k)
633 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
634 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
635 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
636 k >>= 1; 721 k = p;
637 } 722 }
638 723
639 heap [k] = w; 724 heap [k] = w;
640 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
641
642} 726}
643 727
644void inline_speed 728void inline_speed
645downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
646{ 730{
647 WT w = heap [k]; 731 WT w = heap [k];
648 732
649 while (k < (N >> 1)) 733 for (;;)
650 { 734 {
651 int j = k << 1; 735 int c = (k << 1) + 1;
652 736
653 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
654 ++j;
655
656 if (w->at <= heap [j]->at)
657 break; 738 break;
658 739
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
659 heap [k] = heap [j]; 746 heap [k] = heap [c];
660 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
661 k = j; 749 k = c;
662 } 750 }
663 751
664 heap [k] = w; 752 heap [k] = w;
665 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
666} 754}
675/*****************************************************************************/ 763/*****************************************************************************/
676 764
677typedef struct 765typedef struct
678{ 766{
679 WL head; 767 WL head;
680 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
681} ANSIG; 769} ANSIG;
682 770
683static ANSIG *signals; 771static ANSIG *signals;
684static int signalmax; 772static int signalmax;
685 773
686static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
687static sig_atomic_t volatile gotsig;
688static ev_io sigev;
689 775
690void inline_size 776void inline_size
691signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
692{ 778{
693 while (count--) 779 while (count--)
697 783
698 ++base; 784 ++base;
699 } 785 }
700} 786}
701 787
702static void 788/*****************************************************************************/
703sighandler (int signum)
704{
705#if _WIN32
706 signal (signum, sighandler);
707#endif
708 789
709 signals [signum - 1].gotsig = 1;
710
711 if (!gotsig)
712 {
713 int old_errno = errno;
714 gotsig = 1;
715 write (sigpipe [1], &signum, 1);
716 errno = old_errno;
717 }
718}
719
720void noinline
721ev_feed_signal_event (EV_P_ int signum)
722{
723 WL w;
724
725#if EV_MULTIPLICITY
726 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
727#endif
728
729 --signum;
730
731 if (signum < 0 || signum >= signalmax)
732 return;
733
734 signals [signum].gotsig = 0;
735
736 for (w = signals [signum].head; w; w = w->next)
737 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
738}
739
740static void
741sigcb (EV_P_ ev_io *iow, int revents)
742{
743 int signum;
744
745 read (sigpipe [0], &revents, 1);
746 gotsig = 0;
747
748 for (signum = signalmax; signum--; )
749 if (signals [signum].gotsig)
750 ev_feed_signal_event (EV_A_ signum + 1);
751}
752
753void inline_size 790void inline_speed
754fd_intern (int fd) 791fd_intern (int fd)
755{ 792{
756#ifdef _WIN32 793#ifdef _WIN32
757 int arg = 1; 794 int arg = 1;
758 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
761 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
762#endif 799#endif
763} 800}
764 801
765static void noinline 802static void noinline
766siginit (EV_P) 803evpipe_init (EV_P)
767{ 804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
768 fd_intern (sigpipe [0]); 810 fd_intern (evpipe [0]);
769 fd_intern (sigpipe [1]); 811 fd_intern (evpipe [1]);
770 812
771 ev_io_set (&sigev, sigpipe [0], EV_READ); 813 ev_io_set (&pipeev, evpipe [0], EV_READ);
772 ev_io_start (EV_A_ &sigev); 814 ev_io_start (EV_A_ &pipeev);
773 ev_unref (EV_A); /* child watcher should not keep loop alive */ 815 ev_unref (EV_A); /* child watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
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 }
774} 864}
775 865
776/*****************************************************************************/ 866/*****************************************************************************/
777 867
868static void
869sighandler (int signum)
870{
871#if EV_MULTIPLICITY
872 struct ev_loop *loop = &default_loop_struct;
873#endif
874
875#if _WIN32
876 signal (signum, sighandler);
877#endif
878
879 signals [signum - 1].gotsig = 1;
880 evpipe_write (EV_A_ 1, 0);
881}
882
883void noinline
884ev_feed_signal_event (EV_P_ int signum)
885{
886 WL w;
887
888#if EV_MULTIPLICITY
889 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
890#endif
891
892 --signum;
893
894 if (signum < 0 || signum >= signalmax)
895 return;
896
897 signals [signum].gotsig = 0;
898
899 for (w = signals [signum].head; w; w = w->next)
900 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
901}
902
903/*****************************************************************************/
904
778static ev_child *childs [EV_PID_HASHSIZE]; 905static WL childs [EV_PID_HASHSIZE];
779 906
780#ifndef _WIN32 907#ifndef _WIN32
781 908
782static ev_signal childev; 909static ev_signal childev;
910
911#ifndef WIFCONTINUED
912# define WIFCONTINUED(status) 0
913#endif
783 914
784void inline_speed 915void inline_speed
785child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 916child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
786{ 917{
787 ev_child *w; 918 ev_child *w;
919 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
788 920
789 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 921 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
922 {
790 if (w->pid == pid || !w->pid) 923 if ((w->pid == pid || !w->pid)
924 && (!traced || (w->flags & 1)))
791 { 925 {
792 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 926 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
793 w->rpid = pid; 927 w->rpid = pid;
794 w->rstatus = status; 928 w->rstatus = status;
795 ev_feed_event (EV_A_ (W)w, EV_CHILD); 929 ev_feed_event (EV_A_ (W)w, EV_CHILD);
796 } 930 }
931 }
797} 932}
798 933
799#ifndef WCONTINUED 934#ifndef WCONTINUED
800# define WCONTINUED 0 935# define WCONTINUED 0
801#endif 936#endif
898} 1033}
899 1034
900unsigned int 1035unsigned int
901ev_embeddable_backends (void) 1036ev_embeddable_backends (void)
902{ 1037{
903 return EVBACKEND_EPOLL 1038 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
904 | EVBACKEND_KQUEUE 1039
905 | EVBACKEND_PORT; 1040 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1041 /* please fix it and tell me how to detect the fix */
1042 flags &= ~EVBACKEND_EPOLL;
1043
1044 return flags;
906} 1045}
907 1046
908unsigned int 1047unsigned int
909ev_backend (EV_P) 1048ev_backend (EV_P)
910{ 1049{
913 1052
914unsigned int 1053unsigned int
915ev_loop_count (EV_P) 1054ev_loop_count (EV_P)
916{ 1055{
917 return loop_count; 1056 return loop_count;
1057}
1058
1059void
1060ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061{
1062 io_blocktime = interval;
1063}
1064
1065void
1066ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 timeout_blocktime = interval;
918} 1069}
919 1070
920static void noinline 1071static void noinline
921loop_init (EV_P_ unsigned int flags) 1072loop_init (EV_P_ unsigned int flags)
922{ 1073{
933 ev_rt_now = ev_time (); 1084 ev_rt_now = ev_time ();
934 mn_now = get_clock (); 1085 mn_now = get_clock ();
935 now_floor = mn_now; 1086 now_floor = mn_now;
936 rtmn_diff = ev_rt_now - mn_now; 1087 rtmn_diff = ev_rt_now - mn_now;
937 1088
1089 io_blocktime = 0.;
1090 timeout_blocktime = 0.;
1091
938 /* pid check not overridable via env */ 1092 /* pid check not overridable via env */
939#ifndef _WIN32 1093#ifndef _WIN32
940 if (flags & EVFLAG_FORKCHECK) 1094 if (flags & EVFLAG_FORKCHECK)
941 curpid = getpid (); 1095 curpid = getpid ();
942#endif 1096#endif
969#endif 1123#endif
970#if EV_USE_SELECT 1124#if EV_USE_SELECT
971 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1125 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
972#endif 1126#endif
973 1127
974 ev_init (&sigev, sigcb); 1128 ev_init (&pipeev, pipecb);
975 ev_set_priority (&sigev, EV_MAXPRI); 1129 ev_set_priority (&pipeev, EV_MAXPRI);
976 } 1130 }
977} 1131}
978 1132
979static void noinline 1133static void noinline
980loop_destroy (EV_P) 1134loop_destroy (EV_P)
981{ 1135{
982 int i; 1136 int i;
1137
1138 if (ev_is_active (&pipeev))
1139 {
1140 ev_ref (EV_A); /* signal watcher */
1141 ev_io_stop (EV_A_ &pipeev);
1142
1143 close (evpipe [0]); evpipe [0] = 0;
1144 close (evpipe [1]); evpipe [1] = 0;
1145 }
983 1146
984#if EV_USE_INOTIFY 1147#if EV_USE_INOTIFY
985 if (fs_fd >= 0) 1148 if (fs_fd >= 0)
986 close (fs_fd); 1149 close (fs_fd);
987#endif 1150#endif
1010 array_free (pending, [i]); 1173 array_free (pending, [i]);
1011#if EV_IDLE_ENABLE 1174#if EV_IDLE_ENABLE
1012 array_free (idle, [i]); 1175 array_free (idle, [i]);
1013#endif 1176#endif
1014 } 1177 }
1178
1179 ev_free (anfds); anfdmax = 0;
1015 1180
1016 /* have to use the microsoft-never-gets-it-right macro */ 1181 /* have to use the microsoft-never-gets-it-right macro */
1017 array_free (fdchange, EMPTY); 1182 array_free (fdchange, EMPTY);
1018 array_free (timer, EMPTY); 1183 array_free (timer, EMPTY);
1019#if EV_PERIODIC_ENABLE 1184#if EV_PERIODIC_ENABLE
1020 array_free (periodic, EMPTY); 1185 array_free (periodic, EMPTY);
1021#endif 1186#endif
1187#if EV_FORK_ENABLE
1188 array_free (fork, EMPTY);
1189#endif
1022 array_free (prepare, EMPTY); 1190 array_free (prepare, EMPTY);
1023 array_free (check, EMPTY); 1191 array_free (check, EMPTY);
1024 1192
1025 backend = 0; 1193 backend = 0;
1026} 1194}
1041#endif 1209#endif
1042#if EV_USE_INOTIFY 1210#if EV_USE_INOTIFY
1043 infy_fork (EV_A); 1211 infy_fork (EV_A);
1044#endif 1212#endif
1045 1213
1046 if (ev_is_active (&sigev)) 1214 if (ev_is_active (&pipeev))
1047 { 1215 {
1048 /* default loop */ 1216 /* this "locks" the handlers against writing to the pipe */
1217 gotsig = gotasync = 1;
1049 1218
1050 ev_ref (EV_A); 1219 ev_ref (EV_A);
1051 ev_io_stop (EV_A_ &sigev); 1220 ev_io_stop (EV_A_ &pipeev);
1052 close (sigpipe [0]); 1221 close (evpipe [0]);
1053 close (sigpipe [1]); 1222 close (evpipe [1]);
1054 1223
1055 while (pipe (sigpipe))
1056 syserr ("(libev) error creating pipe");
1057
1058 siginit (EV_A); 1224 evpipe_init (EV_A);
1225 /* now iterate over everything */
1226 evcb (EV_A_ &pipeev, EV_READ);
1059 } 1227 }
1060 1228
1061 postfork = 0; 1229 postfork = 0;
1062} 1230}
1063 1231
1085} 1253}
1086 1254
1087void 1255void
1088ev_loop_fork (EV_P) 1256ev_loop_fork (EV_P)
1089{ 1257{
1090 postfork = 1; 1258 postfork = 1; /* must be in line with ev_default_fork */
1091} 1259}
1092 1260
1093#endif 1261#endif
1094 1262
1095#if EV_MULTIPLICITY 1263#if EV_MULTIPLICITY
1098#else 1266#else
1099int 1267int
1100ev_default_loop (unsigned int flags) 1268ev_default_loop (unsigned int flags)
1101#endif 1269#endif
1102{ 1270{
1103 if (sigpipe [0] == sigpipe [1])
1104 if (pipe (sigpipe))
1105 return 0;
1106
1107 if (!ev_default_loop_ptr) 1271 if (!ev_default_loop_ptr)
1108 { 1272 {
1109#if EV_MULTIPLICITY 1273#if EV_MULTIPLICITY
1110 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1274 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1111#else 1275#else
1114 1278
1115 loop_init (EV_A_ flags); 1279 loop_init (EV_A_ flags);
1116 1280
1117 if (ev_backend (EV_A)) 1281 if (ev_backend (EV_A))
1118 { 1282 {
1119 siginit (EV_A);
1120
1121#ifndef _WIN32 1283#ifndef _WIN32
1122 ev_signal_init (&childev, childcb, SIGCHLD); 1284 ev_signal_init (&childev, childcb, SIGCHLD);
1123 ev_set_priority (&childev, EV_MAXPRI); 1285 ev_set_priority (&childev, EV_MAXPRI);
1124 ev_signal_start (EV_A_ &childev); 1286 ev_signal_start (EV_A_ &childev);
1125 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1287 ev_unref (EV_A); /* child watcher should not keep loop alive */
1142#ifndef _WIN32 1304#ifndef _WIN32
1143 ev_ref (EV_A); /* child watcher */ 1305 ev_ref (EV_A); /* child watcher */
1144 ev_signal_stop (EV_A_ &childev); 1306 ev_signal_stop (EV_A_ &childev);
1145#endif 1307#endif
1146 1308
1147 ev_ref (EV_A); /* signal watcher */
1148 ev_io_stop (EV_A_ &sigev);
1149
1150 close (sigpipe [0]); sigpipe [0] = 0;
1151 close (sigpipe [1]); sigpipe [1] = 0;
1152
1153 loop_destroy (EV_A); 1309 loop_destroy (EV_A);
1154} 1310}
1155 1311
1156void 1312void
1157ev_default_fork (void) 1313ev_default_fork (void)
1159#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
1160 struct ev_loop *loop = ev_default_loop_ptr; 1316 struct ev_loop *loop = ev_default_loop_ptr;
1161#endif 1317#endif
1162 1318
1163 if (backend) 1319 if (backend)
1164 postfork = 1; 1320 postfork = 1; /* must be in line with ev_loop_fork */
1165} 1321}
1166 1322
1167/*****************************************************************************/ 1323/*****************************************************************************/
1168 1324
1169void 1325void
1195void inline_size 1351void inline_size
1196timers_reify (EV_P) 1352timers_reify (EV_P)
1197{ 1353{
1198 while (timercnt && ((WT)timers [0])->at <= mn_now) 1354 while (timercnt && ((WT)timers [0])->at <= mn_now)
1199 { 1355 {
1200 ev_timer *w = timers [0]; 1356 ev_timer *w = (ev_timer *)timers [0];
1201 1357
1202 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ 1358 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1203 1359
1204 /* first reschedule or stop timer */ 1360 /* first reschedule or stop timer */
1205 if (w->repeat) 1361 if (w->repeat)
1208 1364
1209 ((WT)w)->at += w->repeat; 1365 ((WT)w)->at += w->repeat;
1210 if (((WT)w)->at < mn_now) 1366 if (((WT)w)->at < mn_now)
1211 ((WT)w)->at = mn_now; 1367 ((WT)w)->at = mn_now;
1212 1368
1213 downheap ((WT *)timers, timercnt, 0); 1369 downheap (timers, timercnt, 0);
1214 } 1370 }
1215 else 1371 else
1216 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1372 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1217 1373
1218 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1374 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1223void inline_size 1379void inline_size
1224periodics_reify (EV_P) 1380periodics_reify (EV_P)
1225{ 1381{
1226 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1382 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1227 { 1383 {
1228 ev_periodic *w = periodics [0]; 1384 ev_periodic *w = (ev_periodic *)periodics [0];
1229 1385
1230 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1386 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1231 1387
1232 /* first reschedule or stop timer */ 1388 /* first reschedule or stop timer */
1233 if (w->reschedule_cb) 1389 if (w->reschedule_cb)
1234 { 1390 {
1235 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1391 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1236 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1392 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1237 downheap ((WT *)periodics, periodiccnt, 0); 1393 downheap (periodics, periodiccnt, 0);
1238 } 1394 }
1239 else if (w->interval) 1395 else if (w->interval)
1240 { 1396 {
1241 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1397 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1242 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1399 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1243 downheap ((WT *)periodics, periodiccnt, 0); 1400 downheap (periodics, periodiccnt, 0);
1244 } 1401 }
1245 else 1402 else
1246 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1403 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1247 1404
1248 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1405 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1255 int i; 1412 int i;
1256 1413
1257 /* adjust periodics after time jump */ 1414 /* adjust periodics after time jump */
1258 for (i = 0; i < periodiccnt; ++i) 1415 for (i = 0; i < periodiccnt; ++i)
1259 { 1416 {
1260 ev_periodic *w = periodics [i]; 1417 ev_periodic *w = (ev_periodic *)periodics [i];
1261 1418
1262 if (w->reschedule_cb) 1419 if (w->reschedule_cb)
1263 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1420 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1264 else if (w->interval) 1421 else if (w->interval)
1265 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1422 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1266 } 1423 }
1267 1424
1268 /* now rebuild the heap */ 1425 /* now rebuild the heap */
1269 for (i = periodiccnt >> 1; i--; ) 1426 for (i = periodiccnt >> 1; i--; )
1270 downheap ((WT *)periodics, periodiccnt, i); 1427 downheap (periodics, periodiccnt, i);
1271} 1428}
1272#endif 1429#endif
1273 1430
1274#if EV_IDLE_ENABLE 1431#if EV_IDLE_ENABLE
1275void inline_size 1432void inline_size
1292 } 1449 }
1293 } 1450 }
1294} 1451}
1295#endif 1452#endif
1296 1453
1297int inline_size 1454void inline_speed
1298time_update_monotonic (EV_P) 1455time_update (EV_P_ ev_tstamp max_block)
1299{ 1456{
1457 int i;
1458
1459#if EV_USE_MONOTONIC
1460 if (expect_true (have_monotonic))
1461 {
1462 ev_tstamp odiff = rtmn_diff;
1463
1300 mn_now = get_clock (); 1464 mn_now = get_clock ();
1301 1465
1466 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1467 /* interpolate in the meantime */
1302 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1468 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1303 { 1469 {
1304 ev_rt_now = rtmn_diff + mn_now; 1470 ev_rt_now = rtmn_diff + mn_now;
1305 return 0; 1471 return;
1306 } 1472 }
1307 else 1473
1308 {
1309 now_floor = mn_now; 1474 now_floor = mn_now;
1310 ev_rt_now = ev_time (); 1475 ev_rt_now = ev_time ();
1311 return 1;
1312 }
1313}
1314 1476
1315void inline_size 1477 /* loop a few times, before making important decisions.
1316time_update (EV_P) 1478 * on the choice of "4": one iteration isn't enough,
1317{ 1479 * in case we get preempted during the calls to
1318 int i; 1480 * ev_time and get_clock. a second call is almost guaranteed
1319 1481 * to succeed in that case, though. and looping a few more times
1320#if EV_USE_MONOTONIC 1482 * doesn't hurt either as we only do this on time-jumps or
1321 if (expect_true (have_monotonic)) 1483 * in the unlikely event of having been preempted here.
1322 { 1484 */
1323 if (time_update_monotonic (EV_A)) 1485 for (i = 4; --i; )
1324 { 1486 {
1325 ev_tstamp odiff = rtmn_diff;
1326
1327 /* loop a few times, before making important decisions.
1328 * on the choice of "4": one iteration isn't enough,
1329 * in case we get preempted during the calls to
1330 * ev_time and get_clock. a second call is almost guaranteed
1331 * to succeed in that case, though. and looping a few more times
1332 * doesn't hurt either as we only do this on time-jumps or
1333 * in the unlikely event of having been preempted here.
1334 */
1335 for (i = 4; --i; )
1336 {
1337 rtmn_diff = ev_rt_now - mn_now; 1487 rtmn_diff = ev_rt_now - mn_now;
1338 1488
1339 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1489 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1340 return; /* all is well */ 1490 return; /* all is well */
1341 1491
1342 ev_rt_now = ev_time (); 1492 ev_rt_now = ev_time ();
1343 mn_now = get_clock (); 1493 mn_now = get_clock ();
1344 now_floor = mn_now; 1494 now_floor = mn_now;
1345 } 1495 }
1346 1496
1347# if EV_PERIODIC_ENABLE 1497# if EV_PERIODIC_ENABLE
1348 periodics_reschedule (EV_A); 1498 periodics_reschedule (EV_A);
1349# endif 1499# endif
1350 /* no timer adjustment, as the monotonic clock doesn't jump */ 1500 /* no timer adjustment, as the monotonic clock doesn't jump */
1351 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1501 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352 }
1353 } 1502 }
1354 else 1503 else
1355#endif 1504#endif
1356 { 1505 {
1357 ev_rt_now = ev_time (); 1506 ev_rt_now = ev_time ();
1358 1507
1359 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1508 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1360 { 1509 {
1361#if EV_PERIODIC_ENABLE 1510#if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A); 1511 periodics_reschedule (EV_A);
1363#endif 1512#endif
1364
1365 /* adjust timers. this is easy, as the offset is the same for all of them */ 1513 /* adjust timers. this is easy, as the offset is the same for all of them */
1366 for (i = 0; i < timercnt; ++i) 1514 for (i = 0; i < timercnt; ++i)
1367 ((WT)timers [i])->at += ev_rt_now - mn_now; 1515 ((WT)timers [i])->at += ev_rt_now - mn_now;
1368 } 1516 }
1369 1517
1413 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1561 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414 call_pending (EV_A); 1562 call_pending (EV_A);
1415 } 1563 }
1416#endif 1564#endif
1417 1565
1418 /* queue check watchers (and execute them) */ 1566 /* queue prepare watchers (and execute them) */
1419 if (expect_false (preparecnt)) 1567 if (expect_false (preparecnt))
1420 { 1568 {
1421 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1569 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1422 call_pending (EV_A); 1570 call_pending (EV_A);
1423 } 1571 }
1432 /* update fd-related kernel structures */ 1580 /* update fd-related kernel structures */
1433 fd_reify (EV_A); 1581 fd_reify (EV_A);
1434 1582
1435 /* calculate blocking time */ 1583 /* calculate blocking time */
1436 { 1584 {
1437 ev_tstamp block; 1585 ev_tstamp waittime = 0.;
1586 ev_tstamp sleeptime = 0.;
1438 1587
1439 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1588 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1440 block = 0.; /* do not block at all */
1441 else
1442 { 1589 {
1443 /* update time to cancel out callback processing overhead */ 1590 /* update time to cancel out callback processing overhead */
1444#if EV_USE_MONOTONIC
1445 if (expect_true (have_monotonic))
1446 time_update_monotonic (EV_A); 1591 time_update (EV_A_ 1e100);
1447 else
1448#endif
1449 {
1450 ev_rt_now = ev_time ();
1451 mn_now = ev_rt_now;
1452 }
1453 1592
1454 block = MAX_BLOCKTIME; 1593 waittime = MAX_BLOCKTIME;
1455 1594
1456 if (timercnt) 1595 if (timercnt)
1457 { 1596 {
1458 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1597 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1459 if (block > to) block = to; 1598 if (waittime > to) waittime = to;
1460 } 1599 }
1461 1600
1462#if EV_PERIODIC_ENABLE 1601#if EV_PERIODIC_ENABLE
1463 if (periodiccnt) 1602 if (periodiccnt)
1464 { 1603 {
1465 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1604 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1466 if (block > to) block = to; 1605 if (waittime > to) waittime = to;
1467 } 1606 }
1468#endif 1607#endif
1469 1608
1470 if (expect_false (block < 0.)) block = 0.; 1609 if (expect_false (waittime < timeout_blocktime))
1610 waittime = timeout_blocktime;
1611
1612 sleeptime = waittime - backend_fudge;
1613
1614 if (expect_true (sleeptime > io_blocktime))
1615 sleeptime = io_blocktime;
1616
1617 if (sleeptime)
1618 {
1619 ev_sleep (sleeptime);
1620 waittime -= sleeptime;
1621 }
1471 } 1622 }
1472 1623
1473 ++loop_count; 1624 ++loop_count;
1474 backend_poll (EV_A_ block); 1625 backend_poll (EV_A_ waittime);
1626
1627 /* update ev_rt_now, do magic */
1628 time_update (EV_A_ waittime + sleeptime);
1475 } 1629 }
1476
1477 /* update ev_rt_now, do magic */
1478 time_update (EV_A);
1479 1630
1480 /* queue pending timers and reschedule them */ 1631 /* queue pending timers and reschedule them */
1481 timers_reify (EV_A); /* relative timers called last */ 1632 timers_reify (EV_A); /* relative timers called last */
1482#if EV_PERIODIC_ENABLE 1633#if EV_PERIODIC_ENABLE
1483 periodics_reify (EV_A); /* absolute timers called first */ 1634 periodics_reify (EV_A); /* absolute timers called first */
1545ev_clear_pending (EV_P_ void *w) 1696ev_clear_pending (EV_P_ void *w)
1546{ 1697{
1547 W w_ = (W)w; 1698 W w_ = (W)w;
1548 int pending = w_->pending; 1699 int pending = w_->pending;
1549 1700
1550 if (!pending) 1701 if (expect_true (pending))
1702 {
1703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1704 w_->pending = 0;
1705 p->w = 0;
1706 return p->events;
1707 }
1708 else
1551 return 0; 1709 return 0;
1552
1553 w_->pending = 0;
1554 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1555 p->w = 0;
1556
1557 return p->events;
1558} 1710}
1559 1711
1560void inline_size 1712void inline_size
1561pri_adjust (EV_P_ W w) 1713pri_adjust (EV_P_ W w)
1562{ 1714{
1581 w->active = 0; 1733 w->active = 0;
1582} 1734}
1583 1735
1584/*****************************************************************************/ 1736/*****************************************************************************/
1585 1737
1586void 1738void noinline
1587ev_io_start (EV_P_ ev_io *w) 1739ev_io_start (EV_P_ ev_io *w)
1588{ 1740{
1589 int fd = w->fd; 1741 int fd = w->fd;
1590 1742
1591 if (expect_false (ev_is_active (w))) 1743 if (expect_false (ev_is_active (w)))
1593 1745
1594 assert (("ev_io_start called with negative fd", fd >= 0)); 1746 assert (("ev_io_start called with negative fd", fd >= 0));
1595 1747
1596 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1597 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1749 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1598 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1750 wlist_add (&anfds[fd].head, (WL)w);
1599 1751
1600 fd_change (EV_A_ fd); 1752 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1753 w->events &= ~EV_IOFDSET;
1601} 1754}
1602 1755
1603void 1756void noinline
1604ev_io_stop (EV_P_ ev_io *w) 1757ev_io_stop (EV_P_ ev_io *w)
1605{ 1758{
1606 clear_pending (EV_A_ (W)w); 1759 clear_pending (EV_A_ (W)w);
1607 if (expect_false (!ev_is_active (w))) 1760 if (expect_false (!ev_is_active (w)))
1608 return; 1761 return;
1609 1762
1610 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1763 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1611 1764
1612 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1765 wlist_del (&anfds[w->fd].head, (WL)w);
1613 ev_stop (EV_A_ (W)w); 1766 ev_stop (EV_A_ (W)w);
1614 1767
1615 fd_change (EV_A_ w->fd); 1768 fd_change (EV_A_ w->fd, 1);
1616} 1769}
1617 1770
1618void 1771void noinline
1619ev_timer_start (EV_P_ ev_timer *w) 1772ev_timer_start (EV_P_ ev_timer *w)
1620{ 1773{
1621 if (expect_false (ev_is_active (w))) 1774 if (expect_false (ev_is_active (w)))
1622 return; 1775 return;
1623 1776
1624 ((WT)w)->at += mn_now; 1777 ((WT)w)->at += mn_now;
1625 1778
1626 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1779 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1627 1780
1628 ev_start (EV_A_ (W)w, ++timercnt); 1781 ev_start (EV_A_ (W)w, ++timercnt);
1629 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1782 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1630 timers [timercnt - 1] = w; 1783 timers [timercnt - 1] = (WT)w;
1631 upheap ((WT *)timers, timercnt - 1); 1784 upheap (timers, timercnt - 1);
1632 1785
1633 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 1786 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1634} 1787}
1635 1788
1636void 1789void noinline
1637ev_timer_stop (EV_P_ ev_timer *w) 1790ev_timer_stop (EV_P_ ev_timer *w)
1638{ 1791{
1639 clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1640 if (expect_false (!ev_is_active (w))) 1793 if (expect_false (!ev_is_active (w)))
1641 return; 1794 return;
1642 1795
1643 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1796 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1644 1797
1645 { 1798 {
1646 int active = ((W)w)->active; 1799 int active = ((W)w)->active;
1647 1800
1648 if (expect_true (--active < --timercnt)) 1801 if (expect_true (--active < --timercnt))
1649 { 1802 {
1650 timers [active] = timers [timercnt]; 1803 timers [active] = timers [timercnt];
1651 adjustheap ((WT *)timers, timercnt, active); 1804 adjustheap (timers, timercnt, active);
1652 } 1805 }
1653 } 1806 }
1654 1807
1655 ((WT)w)->at -= mn_now; 1808 ((WT)w)->at -= mn_now;
1656 1809
1657 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1658} 1811}
1659 1812
1660void 1813void noinline
1661ev_timer_again (EV_P_ ev_timer *w) 1814ev_timer_again (EV_P_ ev_timer *w)
1662{ 1815{
1663 if (ev_is_active (w)) 1816 if (ev_is_active (w))
1664 { 1817 {
1665 if (w->repeat) 1818 if (w->repeat)
1666 { 1819 {
1667 ((WT)w)->at = mn_now + w->repeat; 1820 ((WT)w)->at = mn_now + w->repeat;
1668 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1821 adjustheap (timers, timercnt, ((W)w)->active - 1);
1669 } 1822 }
1670 else 1823 else
1671 ev_timer_stop (EV_A_ w); 1824 ev_timer_stop (EV_A_ w);
1672 } 1825 }
1673 else if (w->repeat) 1826 else if (w->repeat)
1676 ev_timer_start (EV_A_ w); 1829 ev_timer_start (EV_A_ w);
1677 } 1830 }
1678} 1831}
1679 1832
1680#if EV_PERIODIC_ENABLE 1833#if EV_PERIODIC_ENABLE
1681void 1834void noinline
1682ev_periodic_start (EV_P_ ev_periodic *w) 1835ev_periodic_start (EV_P_ ev_periodic *w)
1683{ 1836{
1684 if (expect_false (ev_is_active (w))) 1837 if (expect_false (ev_is_active (w)))
1685 return; 1838 return;
1686 1839
1688 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1841 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1689 else if (w->interval) 1842 else if (w->interval)
1690 { 1843 {
1691 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1844 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1692 /* this formula differs from the one in periodic_reify because we do not always round up */ 1845 /* this formula differs from the one in periodic_reify because we do not always round up */
1693 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1846 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1694 } 1847 }
1848 else
1849 ((WT)w)->at = w->offset;
1695 1850
1696 ev_start (EV_A_ (W)w, ++periodiccnt); 1851 ev_start (EV_A_ (W)w, ++periodiccnt);
1697 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1852 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1698 periodics [periodiccnt - 1] = w; 1853 periodics [periodiccnt - 1] = (WT)w;
1699 upheap ((WT *)periodics, periodiccnt - 1); 1854 upheap (periodics, periodiccnt - 1);
1700 1855
1701 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 1856 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1702} 1857}
1703 1858
1704void 1859void noinline
1705ev_periodic_stop (EV_P_ ev_periodic *w) 1860ev_periodic_stop (EV_P_ ev_periodic *w)
1706{ 1861{
1707 clear_pending (EV_A_ (W)w); 1862 clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w))) 1863 if (expect_false (!ev_is_active (w)))
1709 return; 1864 return;
1710 1865
1711 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1866 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1712 1867
1713 { 1868 {
1714 int active = ((W)w)->active; 1869 int active = ((W)w)->active;
1715 1870
1716 if (expect_true (--active < --periodiccnt)) 1871 if (expect_true (--active < --periodiccnt))
1717 { 1872 {
1718 periodics [active] = periodics [periodiccnt]; 1873 periodics [active] = periodics [periodiccnt];
1719 adjustheap ((WT *)periodics, periodiccnt, active); 1874 adjustheap (periodics, periodiccnt, active);
1720 } 1875 }
1721 } 1876 }
1722 1877
1723 ev_stop (EV_A_ (W)w); 1878 ev_stop (EV_A_ (W)w);
1724} 1879}
1725 1880
1726void 1881void noinline
1727ev_periodic_again (EV_P_ ev_periodic *w) 1882ev_periodic_again (EV_P_ ev_periodic *w)
1728{ 1883{
1729 /* TODO: use adjustheap and recalculation */ 1884 /* TODO: use adjustheap and recalculation */
1730 ev_periodic_stop (EV_A_ w); 1885 ev_periodic_stop (EV_A_ w);
1731 ev_periodic_start (EV_A_ w); 1886 ev_periodic_start (EV_A_ w);
1734 1889
1735#ifndef SA_RESTART 1890#ifndef SA_RESTART
1736# define SA_RESTART 0 1891# define SA_RESTART 0
1737#endif 1892#endif
1738 1893
1739void 1894void noinline
1740ev_signal_start (EV_P_ ev_signal *w) 1895ev_signal_start (EV_P_ ev_signal *w)
1741{ 1896{
1742#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1743 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1898 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1744#endif 1899#endif
1745 if (expect_false (ev_is_active (w))) 1900 if (expect_false (ev_is_active (w)))
1746 return; 1901 return;
1747 1902
1748 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1903 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1749 1904
1905 evpipe_init (EV_A);
1906
1907 {
1908#ifndef _WIN32
1909 sigset_t full, prev;
1910 sigfillset (&full);
1911 sigprocmask (SIG_SETMASK, &full, &prev);
1912#endif
1913
1914 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1915
1916#ifndef _WIN32
1917 sigprocmask (SIG_SETMASK, &prev, 0);
1918#endif
1919 }
1920
1750 ev_start (EV_A_ (W)w, 1); 1921 ev_start (EV_A_ (W)w, 1);
1751 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1752 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1922 wlist_add (&signals [w->signum - 1].head, (WL)w);
1753 1923
1754 if (!((WL)w)->next) 1924 if (!((WL)w)->next)
1755 { 1925 {
1756#if _WIN32 1926#if _WIN32
1757 signal (w->signum, sighandler); 1927 signal (w->signum, sighandler);
1763 sigaction (w->signum, &sa, 0); 1933 sigaction (w->signum, &sa, 0);
1764#endif 1934#endif
1765 } 1935 }
1766} 1936}
1767 1937
1768void 1938void noinline
1769ev_signal_stop (EV_P_ ev_signal *w) 1939ev_signal_stop (EV_P_ ev_signal *w)
1770{ 1940{
1771 clear_pending (EV_A_ (W)w); 1941 clear_pending (EV_A_ (W)w);
1772 if (expect_false (!ev_is_active (w))) 1942 if (expect_false (!ev_is_active (w)))
1773 return; 1943 return;
1774 1944
1775 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1945 wlist_del (&signals [w->signum - 1].head, (WL)w);
1776 ev_stop (EV_A_ (W)w); 1946 ev_stop (EV_A_ (W)w);
1777 1947
1778 if (!signals [w->signum - 1].head) 1948 if (!signals [w->signum - 1].head)
1779 signal (w->signum, SIG_DFL); 1949 signal (w->signum, SIG_DFL);
1780} 1950}
1787#endif 1957#endif
1788 if (expect_false (ev_is_active (w))) 1958 if (expect_false (ev_is_active (w)))
1789 return; 1959 return;
1790 1960
1791 ev_start (EV_A_ (W)w, 1); 1961 ev_start (EV_A_ (W)w, 1);
1792 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 1962 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1793} 1963}
1794 1964
1795void 1965void
1796ev_child_stop (EV_P_ ev_child *w) 1966ev_child_stop (EV_P_ ev_child *w)
1797{ 1967{
1798 clear_pending (EV_A_ (W)w); 1968 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w))) 1969 if (expect_false (!ev_is_active (w)))
1800 return; 1970 return;
1801 1971
1802 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 1972 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1803 ev_stop (EV_A_ (W)w); 1973 ev_stop (EV_A_ (W)w);
1804} 1974}
1805 1975
1806#if EV_STAT_ENABLE 1976#if EV_STAT_ENABLE
1807 1977
2149 2319
2150#if EV_EMBED_ENABLE 2320#if EV_EMBED_ENABLE
2151void noinline 2321void noinline
2152ev_embed_sweep (EV_P_ ev_embed *w) 2322ev_embed_sweep (EV_P_ ev_embed *w)
2153{ 2323{
2154 ev_loop (w->loop, EVLOOP_NONBLOCK); 2324 ev_loop (w->other, EVLOOP_NONBLOCK);
2155} 2325}
2156 2326
2157static void 2327static void
2158embed_cb (EV_P_ ev_io *io, int revents) 2328embed_io_cb (EV_P_ ev_io *io, int revents)
2159{ 2329{
2160 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2330 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161 2331
2162 if (ev_cb (w)) 2332 if (ev_cb (w))
2163 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2333 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164 else 2334 else
2165 ev_embed_sweep (loop, w); 2335 ev_loop (w->other, EVLOOP_NONBLOCK);
2166} 2336}
2337
2338static void
2339embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2340{
2341 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2342
2343 {
2344 struct ev_loop *loop = w->other;
2345
2346 while (fdchangecnt)
2347 {
2348 fd_reify (EV_A);
2349 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2350 }
2351 }
2352}
2353
2354#if 0
2355static void
2356embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2357{
2358 ev_idle_stop (EV_A_ idle);
2359}
2360#endif
2167 2361
2168void 2362void
2169ev_embed_start (EV_P_ ev_embed *w) 2363ev_embed_start (EV_P_ ev_embed *w)
2170{ 2364{
2171 if (expect_false (ev_is_active (w))) 2365 if (expect_false (ev_is_active (w)))
2172 return; 2366 return;
2173 2367
2174 { 2368 {
2175 struct ev_loop *loop = w->loop; 2369 struct ev_loop *loop = w->other;
2176 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2370 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2371 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2178 } 2372 }
2179 2373
2180 ev_set_priority (&w->io, ev_priority (w)); 2374 ev_set_priority (&w->io, ev_priority (w));
2181 ev_io_start (EV_A_ &w->io); 2375 ev_io_start (EV_A_ &w->io);
2182 2376
2377 ev_prepare_init (&w->prepare, embed_prepare_cb);
2378 ev_set_priority (&w->prepare, EV_MINPRI);
2379 ev_prepare_start (EV_A_ &w->prepare);
2380
2381 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382
2183 ev_start (EV_A_ (W)w, 1); 2383 ev_start (EV_A_ (W)w, 1);
2184} 2384}
2185 2385
2186void 2386void
2187ev_embed_stop (EV_P_ ev_embed *w) 2387ev_embed_stop (EV_P_ ev_embed *w)
2189 clear_pending (EV_A_ (W)w); 2389 clear_pending (EV_A_ (W)w);
2190 if (expect_false (!ev_is_active (w))) 2390 if (expect_false (!ev_is_active (w)))
2191 return; 2391 return;
2192 2392
2193 ev_io_stop (EV_A_ &w->io); 2393 ev_io_stop (EV_A_ &w->io);
2394 ev_prepare_stop (EV_A_ &w->prepare);
2194 2395
2195 ev_stop (EV_A_ (W)w); 2396 ev_stop (EV_A_ (W)w);
2196} 2397}
2197#endif 2398#endif
2198 2399
2223 2424
2224 ev_stop (EV_A_ (W)w); 2425 ev_stop (EV_A_ (W)w);
2225} 2426}
2226#endif 2427#endif
2227 2428
2429#if EV_ASYNC_ENABLE
2430void
2431ev_async_start (EV_P_ ev_async *w)
2432{
2433 if (expect_false (ev_is_active (w)))
2434 return;
2435
2436 evpipe_init (EV_A);
2437
2438 ev_start (EV_A_ (W)w, ++asynccnt);
2439 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440 asyncs [asynccnt - 1] = w;
2441}
2442
2443void
2444ev_async_stop (EV_P_ ev_async *w)
2445{
2446 clear_pending (EV_A_ (W)w);
2447 if (expect_false (!ev_is_active (w)))
2448 return;
2449
2450 {
2451 int active = ((W)w)->active;
2452 asyncs [active - 1] = asyncs [--asynccnt];
2453 ((W)asyncs [active - 1])->active = active;
2454 }
2455
2456 ev_stop (EV_A_ (W)w);
2457}
2458
2459void
2460ev_async_send (EV_P_ ev_async *w)
2461{
2462 w->sent = 1;
2463 evpipe_write (EV_A_ 0, 1);
2464}
2465#endif
2466
2228/*****************************************************************************/ 2467/*****************************************************************************/
2229 2468
2230struct ev_once 2469struct ev_once
2231{ 2470{
2232 ev_io io; 2471 ev_io io;
2287 ev_timer_set (&once->to, timeout, 0.); 2526 ev_timer_set (&once->to, timeout, 0.);
2288 ev_timer_start (EV_A_ &once->to); 2527 ev_timer_start (EV_A_ &once->to);
2289 } 2528 }
2290} 2529}
2291 2530
2531#if EV_MULTIPLICITY
2532 #include "ev_wrap.h"
2533#endif
2534
2292#ifdef __cplusplus 2535#ifdef __cplusplus
2293} 2536}
2294#endif 2537#endif
2295 2538

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