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Comparing libev/ev.c (file contents):
Revision 1.256 by root, Thu Jun 19 06:53:49 2008 UTC vs.
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 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 modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# endif
63
52# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
55# endif 67# endif
56# ifndef EV_USE_REALTIME 68# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 69# define EV_USE_REALTIME 0
58# endif 70# endif
59# else 71# else
60# ifndef EV_USE_MONOTONIC 72# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 73# define EV_USE_MONOTONIC 0
62# endif 74# endif
164# endif 176# endif
165#endif 177#endif
166 178
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
168 180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
188
169#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 191# define EV_USE_MONOTONIC 1
172# else 192# else
173# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
174# endif 194# endif
175#endif 195#endif
176 196
177#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 199#endif
180 200
181#ifndef EV_USE_NANOSLEEP 201#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 202# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 203# define EV_USE_NANOSLEEP 1
286# include <sys/select.h> 306# include <sys/select.h>
287# endif 307# endif
288#endif 308#endif
289 309
290#if EV_USE_INOTIFY 310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
291# include <sys/inotify.h> 313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
292#endif 319#endif
293 320
294#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
296#endif 332#endif
297 333
298#if EV_USE_EVENTFD 334#if EV_USE_EVENTFD
299/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300# include <stdint.h> 336# include <stdint.h>
361typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
362 398
363#define ev_active(w) ((W)(w))->active 399#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 400#define ev_at(w) ((WT)(w))->at
365 401
366#if EV_USE_MONOTONIC 402#if EV_USE_REALTIME
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */ 404/* giving it a reasonably high chance of working on typical architetcures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif
407
408#if EV_USE_MONOTONIC
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
370#endif 410#endif
371 411
372#ifdef _WIN32 412#ifdef _WIN32
373# include "ev_win32.c" 413# include "ev_win32.c"
382{ 422{
383 syserr_cb = cb; 423 syserr_cb = cb;
384} 424}
385 425
386static void noinline 426static void noinline
387syserr (const char *msg) 427ev_syserr (const char *msg)
388{ 428{
389 if (!msg) 429 if (!msg)
390 msg = "(libev) system error"; 430 msg = "(libev) system error";
391 431
392 if (syserr_cb) 432 if (syserr_cb)
443typedef struct 483typedef struct
444{ 484{
445 WL head; 485 WL head;
446 unsigned char events; 486 unsigned char events;
447 unsigned char reify; 487 unsigned char reify;
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused;
490#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif
448#if EV_SELECT_IS_WINSOCKET 493#if EV_SELECT_IS_WINSOCKET
449 SOCKET handle; 494 SOCKET handle;
450#endif 495#endif
451} ANFD; 496} ANFD;
452 497
512 557
513ev_tstamp 558ev_tstamp
514ev_time (void) 559ev_time (void)
515{ 560{
516#if EV_USE_REALTIME 561#if EV_USE_REALTIME
562 if (expect_true (have_realtime))
563 {
517 struct timespec ts; 564 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 565 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 566 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 567 }
568#endif
569
521 struct timeval tv; 570 struct timeval tv;
522 gettimeofday (&tv, 0); 571 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 572 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 573}
526 574
527ev_tstamp inline_size 575inline_size ev_tstamp
528get_clock (void) 576get_clock (void)
529{ 577{
530#if EV_USE_MONOTONIC 578#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 579 if (expect_true (have_monotonic))
532 { 580 {
565 struct timeval tv; 613 struct timeval tv;
566 614
567 tv.tv_sec = (time_t)delay; 615 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569 617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */
570 select (0, 0, 0, 0, &tv); 621 select (0, 0, 0, 0, &tv);
571#endif 622#endif
572 } 623 }
573} 624}
574 625
575/*****************************************************************************/ 626/*****************************************************************************/
576 627
577#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
578 629
579int inline_size 630inline_size int
580array_nextsize (int elem, int cur, int cnt) 631array_nextsize (int elem, int cur, int cnt)
581{ 632{
582 int ncur = cur + 1; 633 int ncur = cur + 1;
583 634
584 do 635 do
601array_realloc (int elem, void *base, int *cur, int cnt) 652array_realloc (int elem, void *base, int *cur, int cnt)
602{ 653{
603 *cur = array_nextsize (elem, *cur, cnt); 654 *cur = array_nextsize (elem, *cur, cnt);
604 return ev_realloc (base, elem * *cur); 655 return ev_realloc (base, elem * *cur);
605} 656}
657
658#define array_init_zero(base,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
606 660
607#define array_needsize(type,base,cur,cnt,init) \ 661#define array_needsize(type,base,cur,cnt,init) \
608 if (expect_false ((cnt) > (cur))) \ 662 if (expect_false ((cnt) > (cur))) \
609 { \ 663 { \
610 int ocur_ = (cur); \ 664 int ocur_ = (cur); \
622 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
623 } 677 }
624#endif 678#endif
625 679
626#define array_free(stem, idx) \ 680#define array_free(stem, idx) \
627 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
628 682
629/*****************************************************************************/ 683/*****************************************************************************/
630 684
631void noinline 685void noinline
632ev_feed_event (EV_P_ void *w, int revents) 686ev_feed_event (EV_P_ void *w, int revents)
643 pendings [pri][w_->pending - 1].w = w_; 697 pendings [pri][w_->pending - 1].w = w_;
644 pendings [pri][w_->pending - 1].events = revents; 698 pendings [pri][w_->pending - 1].events = revents;
645 } 699 }
646} 700}
647 701
648void inline_speed 702inline_speed void
703feed_reverse (EV_P_ W w)
704{
705 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
706 rfeeds [rfeedcnt++] = w;
707}
708
709inline_size void
710feed_reverse_done (EV_P_ int revents)
711{
712 do
713 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
714 while (rfeedcnt);
715}
716
717inline_speed void
649queue_events (EV_P_ W *events, int eventcnt, int type) 718queue_events (EV_P_ W *events, int eventcnt, int type)
650{ 719{
651 int i; 720 int i;
652 721
653 for (i = 0; i < eventcnt; ++i) 722 for (i = 0; i < eventcnt; ++i)
654 ev_feed_event (EV_A_ events [i], type); 723 ev_feed_event (EV_A_ events [i], type);
655} 724}
656 725
657/*****************************************************************************/ 726/*****************************************************************************/
658 727
659void inline_size 728inline_speed void
660anfds_init (ANFD *base, int count)
661{
662 while (count--)
663 {
664 base->head = 0;
665 base->events = EV_NONE;
666 base->reify = 0;
667
668 ++base;
669 }
670}
671
672void inline_speed
673fd_event (EV_P_ int fd, int revents) 729fd_event (EV_P_ int fd, int revents)
674{ 730{
675 ANFD *anfd = anfds + fd; 731 ANFD *anfd = anfds + fd;
676 ev_io *w; 732 ev_io *w;
677 733
689{ 745{
690 if (fd >= 0 && fd < anfdmax) 746 if (fd >= 0 && fd < anfdmax)
691 fd_event (EV_A_ fd, revents); 747 fd_event (EV_A_ fd, revents);
692} 748}
693 749
694void inline_size 750inline_size void
695fd_reify (EV_P) 751fd_reify (EV_P)
696{ 752{
697 int i; 753 int i;
698 754
699 for (i = 0; i < fdchangecnt; ++i) 755 for (i = 0; i < fdchangecnt; ++i)
714 #ifdef EV_FD_TO_WIN32_HANDLE 770 #ifdef EV_FD_TO_WIN32_HANDLE
715 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
716 #else 772 #else
717 anfd->handle = _get_osfhandle (fd); 773 anfd->handle = _get_osfhandle (fd);
718 #endif 774 #endif
719 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
720 } 776 }
721#endif 777#endif
722 778
723 { 779 {
724 unsigned char o_events = anfd->events; 780 unsigned char o_events = anfd->events;
725 unsigned char o_reify = anfd->reify; 781 unsigned char o_reify = anfd->reify;
726 782
727 anfd->reify = 0; 783 anfd->reify = 0;
728 anfd->events = events; 784 anfd->events = events;
729 785
730 if (o_events != events || o_reify & EV_IOFDSET) 786 if (o_events != events || o_reify & EV__IOFDSET)
731 backend_modify (EV_A_ fd, o_events, events); 787 backend_modify (EV_A_ fd, o_events, events);
732 } 788 }
733 } 789 }
734 790
735 fdchangecnt = 0; 791 fdchangecnt = 0;
736} 792}
737 793
738void inline_size 794inline_size void
739fd_change (EV_P_ int fd, int flags) 795fd_change (EV_P_ int fd, int flags)
740{ 796{
741 unsigned char reify = anfds [fd].reify; 797 unsigned char reify = anfds [fd].reify;
742 anfds [fd].reify |= flags; 798 anfds [fd].reify |= flags;
743 799
747 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
748 fdchanges [fdchangecnt - 1] = fd; 804 fdchanges [fdchangecnt - 1] = fd;
749 } 805 }
750} 806}
751 807
752void inline_speed 808inline_speed void
753fd_kill (EV_P_ int fd) 809fd_kill (EV_P_ int fd)
754{ 810{
755 ev_io *w; 811 ev_io *w;
756 812
757 while ((w = (ev_io *)anfds [fd].head)) 813 while ((w = (ev_io *)anfds [fd].head))
759 ev_io_stop (EV_A_ w); 815 ev_io_stop (EV_A_ w);
760 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
761 } 817 }
762} 818}
763 819
764int inline_size 820inline_size int
765fd_valid (int fd) 821fd_valid (int fd)
766{ 822{
767#ifdef _WIN32 823#ifdef _WIN32
768 return _get_osfhandle (fd) != -1; 824 return _get_osfhandle (fd) != -1;
769#else 825#else
805 861
806 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
807 if (anfds [fd].events) 863 if (anfds [fd].events)
808 { 864 {
809 anfds [fd].events = 0; 865 anfds [fd].events = 0;
866 anfds [fd].emask = 0;
810 fd_change (EV_A_ fd, EV_IOFDSET | 1); 867 fd_change (EV_A_ fd, EV__IOFDSET | 1);
811 } 868 }
812} 869}
813 870
814/*****************************************************************************/ 871/*****************************************************************************/
815 872
831#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 888#define HEAP0 (DHEAP - 1) /* index of first element in heap */
832#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 889#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
833#define UPHEAP_DONE(p,k) ((p) == (k)) 890#define UPHEAP_DONE(p,k) ((p) == (k))
834 891
835/* away from the root */ 892/* away from the root */
836void inline_speed 893inline_speed void
837downheap (ANHE *heap, int N, int k) 894downheap (ANHE *heap, int N, int k)
838{ 895{
839 ANHE he = heap [k]; 896 ANHE he = heap [k];
840 ANHE *E = heap + N + HEAP0; 897 ANHE *E = heap + N + HEAP0;
841 898
881#define HEAP0 1 938#define HEAP0 1
882#define HPARENT(k) ((k) >> 1) 939#define HPARENT(k) ((k) >> 1)
883#define UPHEAP_DONE(p,k) (!(p)) 940#define UPHEAP_DONE(p,k) (!(p))
884 941
885/* away from the root */ 942/* away from the root */
886void inline_speed 943inline_speed void
887downheap (ANHE *heap, int N, int k) 944downheap (ANHE *heap, int N, int k)
888{ 945{
889 ANHE he = heap [k]; 946 ANHE he = heap [k];
890 947
891 for (;;) 948 for (;;)
911 ev_active (ANHE_w (he)) = k; 968 ev_active (ANHE_w (he)) = k;
912} 969}
913#endif 970#endif
914 971
915/* towards the root */ 972/* towards the root */
916void inline_speed 973inline_speed void
917upheap (ANHE *heap, int k) 974upheap (ANHE *heap, int k)
918{ 975{
919 ANHE he = heap [k]; 976 ANHE he = heap [k];
920 977
921 for (;;) 978 for (;;)
932 989
933 heap [k] = he; 990 heap [k] = he;
934 ev_active (ANHE_w (he)) = k; 991 ev_active (ANHE_w (he)) = k;
935} 992}
936 993
937void inline_size 994inline_size void
938adjustheap (ANHE *heap, int N, int k) 995adjustheap (ANHE *heap, int N, int k)
939{ 996{
940 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
941 upheap (heap, k); 998 upheap (heap, k);
942 else 999 else
943 downheap (heap, N, k); 1000 downheap (heap, N, k);
944} 1001}
945 1002
946/* rebuild the heap: this function is used only once and executed rarely */ 1003/* rebuild the heap: this function is used only once and executed rarely */
947void inline_size 1004inline_size void
948reheap (ANHE *heap, int N) 1005reheap (ANHE *heap, int N)
949{ 1006{
950 int i; 1007 int i;
951 1008
952 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1009 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
966static ANSIG *signals; 1023static ANSIG *signals;
967static int signalmax; 1024static int signalmax;
968 1025
969static EV_ATOMIC_T gotsig; 1026static EV_ATOMIC_T gotsig;
970 1027
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982
983/*****************************************************************************/ 1028/*****************************************************************************/
984 1029
985void inline_speed 1030inline_speed void
986fd_intern (int fd) 1031fd_intern (int fd)
987{ 1032{
988#ifdef _WIN32 1033#ifdef _WIN32
989 unsigned long arg = 1; 1034 unsigned long arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1008 } 1053 }
1009 else 1054 else
1010#endif 1055#endif
1011 { 1056 {
1012 while (pipe (evpipe)) 1057 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1058 ev_syserr ("(libev) error creating signal/async pipe");
1014 1059
1015 fd_intern (evpipe [0]); 1060 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1061 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1062 ev_io_set (&pipeev, evpipe [0], EV_READ);
1018 } 1063 }
1020 ev_io_start (EV_A_ &pipeev); 1065 ev_io_start (EV_A_ &pipeev);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1067 }
1023} 1068}
1024 1069
1025void inline_size 1070inline_size void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1072{
1028 if (!*flag) 1073 if (!*flag)
1029 { 1074 {
1030 int old_errno = errno; /* save errno because write might clobber it */ 1075 int old_errno = errno; /* save errno because write might clobber it */
1108ev_feed_signal_event (EV_P_ int signum) 1153ev_feed_signal_event (EV_P_ int signum)
1109{ 1154{
1110 WL w; 1155 WL w;
1111 1156
1112#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
1113 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1114#endif 1159#endif
1115 1160
1116 --signum; 1161 --signum;
1117 1162
1118 if (signum < 0 || signum >= signalmax) 1163 if (signum < 0 || signum >= signalmax)
1134 1179
1135#ifndef WIFCONTINUED 1180#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1181# define WIFCONTINUED(status) 0
1137#endif 1182#endif
1138 1183
1139void inline_speed 1184inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1185child_reap (EV_P_ int chain, int pid, int status)
1141{ 1186{
1142 ev_child *w; 1187 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1189
1247 /* kqueue is borked on everything but netbsd apparently */ 1292 /* kqueue is borked on everything but netbsd apparently */
1248 /* it usually doesn't work correctly on anything but sockets and pipes */ 1293 /* it usually doesn't work correctly on anything but sockets and pipes */
1249 flags &= ~EVBACKEND_KQUEUE; 1294 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1295#endif
1251#ifdef __APPLE__ 1296#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1297 /* only select works correctly on that "unix-certified" platform */
1253 flags &= ~EVBACKEND_POLL; 1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1254#endif 1300#endif
1255 1301
1256 return flags; 1302 return flags;
1257} 1303}
1258 1304
1295static void noinline 1341static void noinline
1296loop_init (EV_P_ unsigned int flags) 1342loop_init (EV_P_ unsigned int flags)
1297{ 1343{
1298 if (!backend) 1344 if (!backend)
1299 { 1345 {
1346#if EV_USE_REALTIME
1347 if (!have_realtime)
1348 {
1349 struct timespec ts;
1350
1351 if (!clock_gettime (CLOCK_REALTIME, &ts))
1352 have_realtime = 1;
1353 }
1354#endif
1355
1300#if EV_USE_MONOTONIC 1356#if EV_USE_MONOTONIC
1357 if (!have_monotonic)
1301 { 1358 {
1302 struct timespec ts; 1359 struct timespec ts;
1360
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1362 have_monotonic = 1;
1305 } 1363 }
1306#endif 1364#endif
1307 1365
1308 ev_rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1309 mn_now = get_clock (); 1367 mn_now = get_clock ();
1310 now_floor = mn_now; 1368 now_floor = mn_now;
1409 } 1467 }
1410 1468
1411 ev_free (anfds); anfdmax = 0; 1469 ev_free (anfds); anfdmax = 0;
1412 1470
1413 /* have to use the microsoft-never-gets-it-right macro */ 1471 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY);
1414 array_free (fdchange, EMPTY); 1473 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1474 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1475#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1476 array_free (periodic, EMPTY);
1418#endif 1477#endif
1427 1486
1428 backend = 0; 1487 backend = 0;
1429} 1488}
1430 1489
1431#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 1491inline_size void infy_fork (EV_P);
1433#endif 1492#endif
1434 1493
1435void inline_size 1494inline_size void
1436loop_fork (EV_P) 1495loop_fork (EV_P)
1437{ 1496{
1438#if EV_USE_PORT 1497#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 1499#endif
1508{ 1567{
1509 postfork = 1; /* must be in line with ev_default_fork */ 1568 postfork = 1; /* must be in line with ev_default_fork */
1510} 1569}
1511 1570
1512#if EV_VERIFY 1571#if EV_VERIFY
1513void noinline 1572static void noinline
1514verify_watcher (EV_P_ W w) 1573verify_watcher (EV_P_ W w)
1515{ 1574{
1516 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1517 1576
1518 if (w->pending) 1577 if (w->pending)
1519 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1520} 1579}
1521 1580
1522static void noinline 1581static void noinline
1523verify_heap (EV_P_ ANHE *heap, int N) 1582verify_heap (EV_P_ ANHE *heap, int N)
1524{ 1583{
1525 int i; 1584 int i;
1526 1585
1527 for (i = HEAP0; i < N + HEAP0; ++i) 1586 for (i = HEAP0; i < N + HEAP0; ++i)
1528 { 1587 {
1529 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1588 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1530 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1589 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1531 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1590 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1532 1591
1533 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1534 } 1593 }
1535} 1594}
1536 1595
1537static void noinline 1596static void noinline
1538array_verify (EV_P_ W *ws, int cnt) 1597array_verify (EV_P_ W *ws, int cnt)
1539{ 1598{
1540 while (cnt--) 1599 while (cnt--)
1541 { 1600 {
1542 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1543 verify_watcher (EV_A_ ws [cnt]); 1602 verify_watcher (EV_A_ ws [cnt]);
1544 } 1603 }
1545} 1604}
1546#endif 1605#endif
1547 1606
1554 1613
1555 assert (activecnt >= -1); 1614 assert (activecnt >= -1);
1556 1615
1557 assert (fdchangemax >= fdchangecnt); 1616 assert (fdchangemax >= fdchangecnt);
1558 for (i = 0; i < fdchangecnt; ++i) 1617 for (i = 0; i < fdchangecnt; ++i)
1559 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1560 1619
1561 assert (anfdmax >= 0); 1620 assert (anfdmax >= 0);
1562 for (i = 0; i < anfdmax; ++i) 1621 for (i = 0; i < anfdmax; ++i)
1563 for (w = anfds [i].head; w; w = w->next) 1622 for (w = anfds [i].head; w; w = w->next)
1564 { 1623 {
1565 verify_watcher (EV_A_ (W)w); 1624 verify_watcher (EV_A_ (W)w);
1566 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1567 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1626 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1568 } 1627 }
1569 1628
1570 assert (timermax >= timercnt); 1629 assert (timermax >= timercnt);
1571 verify_heap (EV_A_ timers, timercnt); 1630 verify_heap (EV_A_ timers, timercnt);
1572 1631
1649{ 1708{
1650#if EV_MULTIPLICITY 1709#if EV_MULTIPLICITY
1651 struct ev_loop *loop = ev_default_loop_ptr; 1710 struct ev_loop *loop = ev_default_loop_ptr;
1652#endif 1711#endif
1653 1712
1713 ev_default_loop_ptr = 0;
1714
1654#ifndef _WIN32 1715#ifndef _WIN32
1655 ev_ref (EV_A); /* child watcher */ 1716 ev_ref (EV_A); /* child watcher */
1656 ev_signal_stop (EV_A_ &childev); 1717 ev_signal_stop (EV_A_ &childev);
1657#endif 1718#endif
1658 1719
1664{ 1725{
1665#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1666 struct ev_loop *loop = ev_default_loop_ptr; 1727 struct ev_loop *loop = ev_default_loop_ptr;
1667#endif 1728#endif
1668 1729
1669 if (backend)
1670 postfork = 1; /* must be in line with ev_loop_fork */ 1730 postfork = 1; /* must be in line with ev_loop_fork */
1671} 1731}
1672 1732
1673/*****************************************************************************/ 1733/*****************************************************************************/
1674 1734
1675void 1735void
1676ev_invoke (EV_P_ void *w, int revents) 1736ev_invoke (EV_P_ void *w, int revents)
1677{ 1737{
1678 EV_CB_INVOKE ((W)w, revents); 1738 EV_CB_INVOKE ((W)w, revents);
1679} 1739}
1680 1740
1681void inline_speed 1741inline_speed void
1682call_pending (EV_P) 1742call_pending (EV_P)
1683{ 1743{
1684 int pri; 1744 int pri;
1685 1745
1686 for (pri = NUMPRI; pri--; ) 1746 for (pri = NUMPRI; pri--; )
1688 { 1748 {
1689 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1690 1750
1691 if (expect_true (p->w)) 1751 if (expect_true (p->w))
1692 { 1752 {
1693 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1694 1754
1695 p->w->pending = 0; 1755 p->w->pending = 0;
1696 EV_CB_INVOKE (p->w, p->events); 1756 EV_CB_INVOKE (p->w, p->events);
1697 EV_FREQUENT_CHECK; 1757 EV_FREQUENT_CHECK;
1698 } 1758 }
1699 } 1759 }
1700} 1760}
1701 1761
1702#if EV_IDLE_ENABLE 1762#if EV_IDLE_ENABLE
1703void inline_size 1763inline_size void
1704idle_reify (EV_P) 1764idle_reify (EV_P)
1705{ 1765{
1706 if (expect_false (idleall)) 1766 if (expect_false (idleall))
1707 { 1767 {
1708 int pri; 1768 int pri;
1720 } 1780 }
1721 } 1781 }
1722} 1782}
1723#endif 1783#endif
1724 1784
1725void inline_size 1785inline_size void
1726timers_reify (EV_P) 1786timers_reify (EV_P)
1727{ 1787{
1728 EV_FREQUENT_CHECK; 1788 EV_FREQUENT_CHECK;
1729 1789
1730 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1790 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1731 { 1791 {
1732 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1792 do
1733
1734 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1735
1736 /* first reschedule or stop timer */
1737 if (w->repeat)
1738 { 1793 {
1794 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1795
1796 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1797
1798 /* first reschedule or stop timer */
1799 if (w->repeat)
1800 {
1739 ev_at (w) += w->repeat; 1801 ev_at (w) += w->repeat;
1740 if (ev_at (w) < mn_now) 1802 if (ev_at (w) < mn_now)
1741 ev_at (w) = mn_now; 1803 ev_at (w) = mn_now;
1742 1804
1743 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1805 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1744 1806
1745 ANHE_at_cache (timers [HEAP0]); 1807 ANHE_at_cache (timers [HEAP0]);
1746 downheap (timers, timercnt, HEAP0); 1808 downheap (timers, timercnt, HEAP0);
1809 }
1810 else
1811 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1812
1813 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w);
1747 } 1815 }
1748 else 1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1749 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1750 1817
1751 EV_FREQUENT_CHECK;
1752 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1818 feed_reverse_done (EV_A_ EV_TIMEOUT);
1753 } 1819 }
1754} 1820}
1755 1821
1756#if EV_PERIODIC_ENABLE 1822#if EV_PERIODIC_ENABLE
1757void inline_size 1823inline_size void
1758periodics_reify (EV_P) 1824periodics_reify (EV_P)
1759{ 1825{
1760 EV_FREQUENT_CHECK; 1826 EV_FREQUENT_CHECK;
1761 1827
1762 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1763 { 1829 {
1764 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1830 int feed_count = 0;
1765 1831
1766 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1832 do
1767
1768 /* first reschedule or stop timer */
1769 if (w->reschedule_cb)
1770 { 1833 {
1834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1835
1836 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1837
1838 /* first reschedule or stop timer */
1839 if (w->reschedule_cb)
1840 {
1771 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1772 1842
1773 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 1843 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1774 1844
1775 ANHE_at_cache (periodics [HEAP0]); 1845 ANHE_at_cache (periodics [HEAP0]);
1776 downheap (periodics, periodiccnt, HEAP0); 1846 downheap (periodics, periodiccnt, HEAP0);
1847 }
1848 else if (w->interval)
1849 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0);
1866 }
1867 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1869
1870 EV_FREQUENT_CHECK;
1871 feed_reverse (EV_A_ (W)w);
1777 } 1872 }
1778 else if (w->interval) 1873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1779 {
1780 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1781 /* if next trigger time is not sufficiently in the future, put it there */
1782 /* this might happen because of floating point inexactness */
1783 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1784 {
1785 ev_at (w) += w->interval;
1786 1874
1787 /* if interval is unreasonably low we might still have a time in the past */
1788 /* so correct this. this will make the periodic very inexact, but the user */
1789 /* has effectively asked to get triggered more often than possible */
1790 if (ev_at (w) < ev_rt_now)
1791 ev_at (w) = ev_rt_now;
1792 }
1793
1794 ANHE_at_cache (periodics [HEAP0]);
1795 downheap (periodics, periodiccnt, HEAP0);
1796 }
1797 else
1798 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1799
1800 EV_FREQUENT_CHECK;
1801 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1875 feed_reverse_done (EV_A_ EV_PERIODIC);
1802 } 1876 }
1803} 1877}
1804 1878
1805static void noinline 1879static void noinline
1806periodics_reschedule (EV_P) 1880periodics_reschedule (EV_P)
1822 1896
1823 reheap (periodics, periodiccnt); 1897 reheap (periodics, periodiccnt);
1824} 1898}
1825#endif 1899#endif
1826 1900
1827void inline_speed 1901static void noinline
1902timers_reschedule (EV_P_ ev_tstamp adjust)
1903{
1904 int i;
1905
1906 for (i = 0; i < timercnt; ++i)
1907 {
1908 ANHE *he = timers + i + HEAP0;
1909 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he);
1911 }
1912}
1913
1914inline_speed void
1828time_update (EV_P_ ev_tstamp max_block) 1915time_update (EV_P_ ev_tstamp max_block)
1829{ 1916{
1830 int i; 1917 int i;
1831 1918
1832#if EV_USE_MONOTONIC 1919#if EV_USE_MONOTONIC
1865 ev_rt_now = ev_time (); 1952 ev_rt_now = ev_time ();
1866 mn_now = get_clock (); 1953 mn_now = get_clock ();
1867 now_floor = mn_now; 1954 now_floor = mn_now;
1868 } 1955 }
1869 1956
1957 /* no timer adjustment, as the monotonic clock doesn't jump */
1958 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870# if EV_PERIODIC_ENABLE 1959# if EV_PERIODIC_ENABLE
1871 periodics_reschedule (EV_A); 1960 periodics_reschedule (EV_A);
1872# endif 1961# endif
1873 /* no timer adjustment, as the monotonic clock doesn't jump */
1874 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1875 } 1962 }
1876 else 1963 else
1877#endif 1964#endif
1878 { 1965 {
1879 ev_rt_now = ev_time (); 1966 ev_rt_now = ev_time ();
1880 1967
1881 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 1968 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1882 { 1969 {
1970 /* adjust timers. this is easy, as the offset is the same for all of them */
1971 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1883#if EV_PERIODIC_ENABLE 1972#if EV_PERIODIC_ENABLE
1884 periodics_reschedule (EV_A); 1973 periodics_reschedule (EV_A);
1885#endif 1974#endif
1886 /* adjust timers. this is easy, as the offset is the same for all of them */
1887 for (i = 0; i < timercnt; ++i)
1888 {
1889 ANHE *he = timers + i + HEAP0;
1890 ANHE_w (*he)->at += ev_rt_now - mn_now;
1891 ANHE_at_cache (*he);
1892 }
1893 } 1975 }
1894 1976
1895 mn_now = ev_rt_now; 1977 mn_now = ev_rt_now;
1896 } 1978 }
1897}
1898
1899void
1900ev_ref (EV_P)
1901{
1902 ++activecnt;
1903}
1904
1905void
1906ev_unref (EV_P)
1907{
1908 --activecnt;
1909} 1979}
1910 1980
1911static int loop_done; 1981static int loop_done;
1912 1982
1913void 1983void
1947 { 2017 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2019 call_pending (EV_A);
1950 } 2020 }
1951 2021
1952 if (expect_false (!activecnt))
1953 break;
1954
1955 /* we might have forked, so reify kernel state if necessary */ 2022 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2023 if (expect_false (postfork))
1957 loop_fork (EV_A); 2024 loop_fork (EV_A);
1958 2025
1959 /* update fd-related kernel structures */ 2026 /* update fd-related kernel structures */
1966 2033
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1968 { 2035 {
1969 /* update time to cancel out callback processing overhead */ 2036 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100); 2037 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME;
1973 2038
1974 if (timercnt) 2039 if (timercnt)
1975 { 2040 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1977 if (waittime > to) waittime = to; 2042 if (waittime > to) waittime = to;
2038ev_unloop (EV_P_ int how) 2103ev_unloop (EV_P_ int how)
2039{ 2104{
2040 loop_done = how; 2105 loop_done = how;
2041} 2106}
2042 2107
2108void
2109ev_ref (EV_P)
2110{
2111 ++activecnt;
2112}
2113
2114void
2115ev_unref (EV_P)
2116{
2117 --activecnt;
2118}
2119
2120void
2121ev_now_update (EV_P)
2122{
2123 time_update (EV_A_ 1e100);
2124}
2125
2126void
2127ev_suspend (EV_P)
2128{
2129 ev_now_update (EV_A);
2130}
2131
2132void
2133ev_resume (EV_P)
2134{
2135 ev_tstamp mn_prev = mn_now;
2136
2137 ev_now_update (EV_A);
2138 timers_reschedule (EV_A_ mn_now - mn_prev);
2139#if EV_PERIODIC_ENABLE
2140 periodics_reschedule (EV_A);
2141#endif
2142}
2143
2043/*****************************************************************************/ 2144/*****************************************************************************/
2044 2145
2045void inline_size 2146inline_size void
2046wlist_add (WL *head, WL elem) 2147wlist_add (WL *head, WL elem)
2047{ 2148{
2048 elem->next = *head; 2149 elem->next = *head;
2049 *head = elem; 2150 *head = elem;
2050} 2151}
2051 2152
2052void inline_size 2153inline_size void
2053wlist_del (WL *head, WL elem) 2154wlist_del (WL *head, WL elem)
2054{ 2155{
2055 while (*head) 2156 while (*head)
2056 { 2157 {
2057 if (*head == elem) 2158 if (*head == elem)
2062 2163
2063 head = &(*head)->next; 2164 head = &(*head)->next;
2064 } 2165 }
2065} 2166}
2066 2167
2067void inline_speed 2168inline_speed void
2068clear_pending (EV_P_ W w) 2169clear_pending (EV_P_ W w)
2069{ 2170{
2070 if (w->pending) 2171 if (w->pending)
2071 { 2172 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2173 pendings [ABSPRI (w)][w->pending - 1].w = 0;
2089 } 2190 }
2090 else 2191 else
2091 return 0; 2192 return 0;
2092} 2193}
2093 2194
2094void inline_size 2195inline_size void
2095pri_adjust (EV_P_ W w) 2196pri_adjust (EV_P_ W w)
2096{ 2197{
2097 int pri = w->priority; 2198 int pri = w->priority;
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2199 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2200 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 2201 w->priority = pri;
2101} 2202}
2102 2203
2103void inline_speed 2204inline_speed void
2104ev_start (EV_P_ W w, int active) 2205ev_start (EV_P_ W w, int active)
2105{ 2206{
2106 pri_adjust (EV_A_ w); 2207 pri_adjust (EV_A_ w);
2107 w->active = active; 2208 w->active = active;
2108 ev_ref (EV_A); 2209 ev_ref (EV_A);
2109} 2210}
2110 2211
2111void inline_size 2212inline_size void
2112ev_stop (EV_P_ W w) 2213ev_stop (EV_P_ W w)
2113{ 2214{
2114 ev_unref (EV_A); 2215 ev_unref (EV_A);
2115 w->active = 0; 2216 w->active = 0;
2116} 2217}
2123 int fd = w->fd; 2224 int fd = w->fd;
2124 2225
2125 if (expect_false (ev_is_active (w))) 2226 if (expect_false (ev_is_active (w)))
2126 return; 2227 return;
2127 2228
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 2229 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2129 2231
2130 EV_FREQUENT_CHECK; 2232 EV_FREQUENT_CHECK;
2131 2233
2132 ev_start (EV_A_ (W)w, 1); 2234 ev_start (EV_A_ (W)w, 1);
2133 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2235 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2134 wlist_add (&anfds[fd].head, (WL)w); 2236 wlist_add (&anfds[fd].head, (WL)w);
2135 2237
2136 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2238 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2137 w->events &= ~EV_IOFDSET; 2239 w->events &= ~EV__IOFDSET;
2138 2240
2139 EV_FREQUENT_CHECK; 2241 EV_FREQUENT_CHECK;
2140} 2242}
2141 2243
2142void noinline 2244void noinline
2144{ 2246{
2145 clear_pending (EV_A_ (W)w); 2247 clear_pending (EV_A_ (W)w);
2146 if (expect_false (!ev_is_active (w))) 2248 if (expect_false (!ev_is_active (w)))
2147 return; 2249 return;
2148 2250
2149 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2251 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2150 2252
2151 EV_FREQUENT_CHECK; 2253 EV_FREQUENT_CHECK;
2152 2254
2153 wlist_del (&anfds[w->fd].head, (WL)w); 2255 wlist_del (&anfds[w->fd].head, (WL)w);
2154 ev_stop (EV_A_ (W)w); 2256 ev_stop (EV_A_ (W)w);
2164 if (expect_false (ev_is_active (w))) 2266 if (expect_false (ev_is_active (w)))
2165 return; 2267 return;
2166 2268
2167 ev_at (w) += mn_now; 2269 ev_at (w) += mn_now;
2168 2270
2169 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2271 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2170 2272
2171 EV_FREQUENT_CHECK; 2273 EV_FREQUENT_CHECK;
2172 2274
2173 ++timercnt; 2275 ++timercnt;
2174 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2276 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2177 ANHE_at_cache (timers [ev_active (w)]); 2279 ANHE_at_cache (timers [ev_active (w)]);
2178 upheap (timers, ev_active (w)); 2280 upheap (timers, ev_active (w));
2179 2281
2180 EV_FREQUENT_CHECK; 2282 EV_FREQUENT_CHECK;
2181 2283
2182 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2284 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2183} 2285}
2184 2286
2185void noinline 2287void noinline
2186ev_timer_stop (EV_P_ ev_timer *w) 2288ev_timer_stop (EV_P_ ev_timer *w)
2187{ 2289{
2192 EV_FREQUENT_CHECK; 2294 EV_FREQUENT_CHECK;
2193 2295
2194 { 2296 {
2195 int active = ev_active (w); 2297 int active = ev_active (w);
2196 2298
2197 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2299 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2198 2300
2199 --timercnt; 2301 --timercnt;
2200 2302
2201 if (expect_true (active < timercnt + HEAP0)) 2303 if (expect_true (active < timercnt + HEAP0))
2202 { 2304 {
2246 2348
2247 if (w->reschedule_cb) 2349 if (w->reschedule_cb)
2248 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2350 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2249 else if (w->interval) 2351 else if (w->interval)
2250 { 2352 {
2251 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2353 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2252 /* this formula differs from the one in periodic_reify because we do not always round up */ 2354 /* this formula differs from the one in periodic_reify because we do not always round up */
2253 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2254 } 2356 }
2255 else 2357 else
2256 ev_at (w) = w->offset; 2358 ev_at (w) = w->offset;
2264 ANHE_at_cache (periodics [ev_active (w)]); 2366 ANHE_at_cache (periodics [ev_active (w)]);
2265 upheap (periodics, ev_active (w)); 2367 upheap (periodics, ev_active (w));
2266 2368
2267 EV_FREQUENT_CHECK; 2369 EV_FREQUENT_CHECK;
2268 2370
2269 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2270} 2372}
2271 2373
2272void noinline 2374void noinline
2273ev_periodic_stop (EV_P_ ev_periodic *w) 2375ev_periodic_stop (EV_P_ ev_periodic *w)
2274{ 2376{
2279 EV_FREQUENT_CHECK; 2381 EV_FREQUENT_CHECK;
2280 2382
2281 { 2383 {
2282 int active = ev_active (w); 2384 int active = ev_active (w);
2283 2385
2284 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2386 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2285 2387
2286 --periodiccnt; 2388 --periodiccnt;
2287 2389
2288 if (expect_true (active < periodiccnt + HEAP0)) 2390 if (expect_true (active < periodiccnt + HEAP0))
2289 { 2391 {
2312 2414
2313void noinline 2415void noinline
2314ev_signal_start (EV_P_ ev_signal *w) 2416ev_signal_start (EV_P_ ev_signal *w)
2315{ 2417{
2316#if EV_MULTIPLICITY 2418#if EV_MULTIPLICITY
2317 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2419 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2318#endif 2420#endif
2319 if (expect_false (ev_is_active (w))) 2421 if (expect_false (ev_is_active (w)))
2320 return; 2422 return;
2321 2423
2322 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2424 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2323 2425
2324 evpipe_init (EV_A); 2426 evpipe_init (EV_A);
2325 2427
2326 EV_FREQUENT_CHECK; 2428 EV_FREQUENT_CHECK;
2327 2429
2330 sigset_t full, prev; 2432 sigset_t full, prev;
2331 sigfillset (&full); 2433 sigfillset (&full);
2332 sigprocmask (SIG_SETMASK, &full, &prev); 2434 sigprocmask (SIG_SETMASK, &full, &prev);
2333#endif 2435#endif
2334 2436
2335 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2437 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2336 2438
2337#ifndef _WIN32 2439#ifndef _WIN32
2338 sigprocmask (SIG_SETMASK, &prev, 0); 2440 sigprocmask (SIG_SETMASK, &prev, 0);
2339#endif 2441#endif
2340 } 2442 }
2378 2480
2379void 2481void
2380ev_child_start (EV_P_ ev_child *w) 2482ev_child_start (EV_P_ ev_child *w)
2381{ 2483{
2382#if EV_MULTIPLICITY 2484#if EV_MULTIPLICITY
2383 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2485 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2384#endif 2486#endif
2385 if (expect_false (ev_is_active (w))) 2487 if (expect_false (ev_is_active (w)))
2386 return; 2488 return;
2387 2489
2388 EV_FREQUENT_CHECK; 2490 EV_FREQUENT_CHECK;
2413# ifdef _WIN32 2515# ifdef _WIN32
2414# undef lstat 2516# undef lstat
2415# define lstat(a,b) _stati64 (a,b) 2517# define lstat(a,b) _stati64 (a,b)
2416# endif 2518# endif
2417 2519
2418#define DEF_STAT_INTERVAL 5.0074891 2520#define DEF_STAT_INTERVAL 5.0074891
2521#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2419#define MIN_STAT_INTERVAL 0.1074891 2522#define MIN_STAT_INTERVAL 0.1074891
2420 2523
2421static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2524static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2422 2525
2423#if EV_USE_INOTIFY 2526#if EV_USE_INOTIFY
2424# define EV_INOTIFY_BUFSIZE 8192 2527# define EV_INOTIFY_BUFSIZE 8192
2428{ 2531{
2429 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2532 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2430 2533
2431 if (w->wd < 0) 2534 if (w->wd < 0)
2432 { 2535 {
2536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2537 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2434 2538
2435 /* monitor some parent directory for speedup hints */ 2539 /* monitor some parent directory for speedup hints */
2436 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2540 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2437 /* but an efficiency issue only */ 2541 /* but an efficiency issue only */
2438 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2542 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2439 { 2543 {
2440 char path [4096]; 2544 char path [4096];
2441 strcpy (path, w->path); 2545 strcpy (path, w->path);
2445 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2549 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2446 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2550 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2447 2551
2448 char *pend = strrchr (path, '/'); 2552 char *pend = strrchr (path, '/');
2449 2553
2450 if (!pend) 2554 if (!pend || pend == path)
2451 break; /* whoops, no '/', complain to your admin */ 2555 break;
2452 2556
2453 *pend = 0; 2557 *pend = 0;
2454 w->wd = inotify_add_watch (fs_fd, path, mask); 2558 w->wd = inotify_add_watch (fs_fd, path, mask);
2455 } 2559 }
2456 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2560 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2457 } 2561 }
2458 } 2562 }
2459 else
2460 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2461 2563
2462 if (w->wd >= 0) 2564 if (w->wd >= 0)
2565 {
2463 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2566 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2567
2568 /* now local changes will be tracked by inotify, but remote changes won't */
2569 /* unless the filesystem it known to be local, we therefore still poll */
2570 /* also do poll on <2.6.25, but with normal frequency */
2571 struct statfs sfs;
2572
2573 if (fs_2625 && !statfs (w->path, &sfs))
2574 if (sfs.f_type == 0x1373 /* devfs */
2575 || sfs.f_type == 0xEF53 /* ext2/3 */
2576 || sfs.f_type == 0x3153464a /* jfs */
2577 || sfs.f_type == 0x52654973 /* reiser3 */
2578 || sfs.f_type == 0x01021994 /* tempfs */
2579 || sfs.f_type == 0x58465342 /* xfs */)
2580 return;
2581
2582 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583 ev_timer_again (EV_A_ &w->timer);
2584 }
2464} 2585}
2465 2586
2466static void noinline 2587static void noinline
2467infy_del (EV_P_ ev_stat *w) 2588infy_del (EV_P_ ev_stat *w)
2468{ 2589{
2482 2603
2483static void noinline 2604static void noinline
2484infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2605infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2485{ 2606{
2486 if (slot < 0) 2607 if (slot < 0)
2487 /* overflow, need to check for all hahs slots */ 2608 /* overflow, need to check for all hash slots */
2488 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2609 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2489 infy_wd (EV_A_ slot, wd, ev); 2610 infy_wd (EV_A_ slot, wd, ev);
2490 else 2611 else
2491 { 2612 {
2492 WL w_; 2613 WL w_;
2498 2619
2499 if (w->wd == wd || wd == -1) 2620 if (w->wd == wd || wd == -1)
2500 { 2621 {
2501 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2622 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2502 { 2623 {
2624 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2503 w->wd = -1; 2625 w->wd = -1;
2504 infy_add (EV_A_ w); /* re-add, no matter what */ 2626 infy_add (EV_A_ w); /* re-add, no matter what */
2505 } 2627 }
2506 2628
2507 stat_timer_cb (EV_A_ &w->timer, 0); 2629 stat_timer_cb (EV_A_ &w->timer, 0);
2520 2642
2521 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2643 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2522 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2644 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2523} 2645}
2524 2646
2525void inline_size 2647inline_size void
2648check_2625 (EV_P)
2649{
2650 /* kernels < 2.6.25 are borked
2651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652 */
2653 struct utsname buf;
2654 int major, minor, micro;
2655
2656 if (uname (&buf))
2657 return;
2658
2659 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660 return;
2661
2662 if (major < 2
2663 || (major == 2 && minor < 6)
2664 || (major == 2 && minor == 6 && micro < 25))
2665 return;
2666
2667 fs_2625 = 1;
2668}
2669
2670inline_size void
2526infy_init (EV_P) 2671infy_init (EV_P)
2527{ 2672{
2528 if (fs_fd != -2) 2673 if (fs_fd != -2)
2529 return; 2674 return;
2675
2676 fs_fd = -1;
2677
2678 check_2625 (EV_A);
2530 2679
2531 fs_fd = inotify_init (); 2680 fs_fd = inotify_init ();
2532 2681
2533 if (fs_fd >= 0) 2682 if (fs_fd >= 0)
2534 { 2683 {
2536 ev_set_priority (&fs_w, EV_MAXPRI); 2685 ev_set_priority (&fs_w, EV_MAXPRI);
2537 ev_io_start (EV_A_ &fs_w); 2686 ev_io_start (EV_A_ &fs_w);
2538 } 2687 }
2539} 2688}
2540 2689
2541void inline_size 2690inline_size void
2542infy_fork (EV_P) 2691infy_fork (EV_P)
2543{ 2692{
2544 int slot; 2693 int slot;
2545 2694
2546 if (fs_fd < 0) 2695 if (fs_fd < 0)
2562 w->wd = -1; 2711 w->wd = -1;
2563 2712
2564 if (fs_fd >= 0) 2713 if (fs_fd >= 0)
2565 infy_add (EV_A_ w); /* re-add, no matter what */ 2714 infy_add (EV_A_ w); /* re-add, no matter what */
2566 else 2715 else
2567 ev_timer_start (EV_A_ &w->timer); 2716 ev_timer_again (EV_A_ &w->timer);
2568 } 2717 }
2569
2570 } 2718 }
2571} 2719}
2572 2720
2573#endif 2721#endif
2574 2722
2610 || w->prev.st_atime != w->attr.st_atime 2758 || w->prev.st_atime != w->attr.st_atime
2611 || w->prev.st_mtime != w->attr.st_mtime 2759 || w->prev.st_mtime != w->attr.st_mtime
2612 || w->prev.st_ctime != w->attr.st_ctime 2760 || w->prev.st_ctime != w->attr.st_ctime
2613 ) { 2761 ) {
2614 #if EV_USE_INOTIFY 2762 #if EV_USE_INOTIFY
2763 if (fs_fd >= 0)
2764 {
2615 infy_del (EV_A_ w); 2765 infy_del (EV_A_ w);
2616 infy_add (EV_A_ w); 2766 infy_add (EV_A_ w);
2617 ev_stat_stat (EV_A_ w); /* avoid race... */ 2767 ev_stat_stat (EV_A_ w); /* avoid race... */
2768 }
2618 #endif 2769 #endif
2619 2770
2620 ev_feed_event (EV_A_ w, EV_STAT); 2771 ev_feed_event (EV_A_ w, EV_STAT);
2621 } 2772 }
2622} 2773}
2625ev_stat_start (EV_P_ ev_stat *w) 2776ev_stat_start (EV_P_ ev_stat *w)
2626{ 2777{
2627 if (expect_false (ev_is_active (w))) 2778 if (expect_false (ev_is_active (w)))
2628 return; 2779 return;
2629 2780
2630 /* since we use memcmp, we need to clear any padding data etc. */
2631 memset (&w->prev, 0, sizeof (ev_statdata));
2632 memset (&w->attr, 0, sizeof (ev_statdata));
2633
2634 ev_stat_stat (EV_A_ w); 2781 ev_stat_stat (EV_A_ w);
2635 2782
2783 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2636 if (w->interval < MIN_STAT_INTERVAL) 2784 w->interval = MIN_STAT_INTERVAL;
2637 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2638 2785
2639 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2786 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2640 ev_set_priority (&w->timer, ev_priority (w)); 2787 ev_set_priority (&w->timer, ev_priority (w));
2641 2788
2642#if EV_USE_INOTIFY 2789#if EV_USE_INOTIFY
2643 infy_init (EV_A); 2790 infy_init (EV_A);
2644 2791
2645 if (fs_fd >= 0) 2792 if (fs_fd >= 0)
2646 infy_add (EV_A_ w); 2793 infy_add (EV_A_ w);
2647 else 2794 else
2648#endif 2795#endif
2649 ev_timer_start (EV_A_ &w->timer); 2796 ev_timer_again (EV_A_ &w->timer);
2650 2797
2651 ev_start (EV_A_ (W)w, 1); 2798 ev_start (EV_A_ (W)w, 1);
2652 2799
2653 EV_FREQUENT_CHECK; 2800 EV_FREQUENT_CHECK;
2654} 2801}
2824 ev_loop (EV_A_ EVLOOP_NONBLOCK); 2971 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2825 } 2972 }
2826 } 2973 }
2827} 2974}
2828 2975
2976static void
2977embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2978{
2979 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980
2981 ev_embed_stop (EV_A_ w);
2982
2983 {
2984 struct ev_loop *loop = w->other;
2985
2986 ev_loop_fork (EV_A);
2987 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2988 }
2989
2990 ev_embed_start (EV_A_ w);
2991}
2992
2829#if 0 2993#if 0
2830static void 2994static void
2831embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2995embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2832{ 2996{
2833 ev_idle_stop (EV_A_ idle); 2997 ev_idle_stop (EV_A_ idle);
2840 if (expect_false (ev_is_active (w))) 3004 if (expect_false (ev_is_active (w)))
2841 return; 3005 return;
2842 3006
2843 { 3007 {
2844 struct ev_loop *loop = w->other; 3008 struct ev_loop *loop = w->other;
2845 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3009 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2846 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3010 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2847 } 3011 }
2848 3012
2849 EV_FREQUENT_CHECK; 3013 EV_FREQUENT_CHECK;
2850 3014
2853 3017
2854 ev_prepare_init (&w->prepare, embed_prepare_cb); 3018 ev_prepare_init (&w->prepare, embed_prepare_cb);
2855 ev_set_priority (&w->prepare, EV_MINPRI); 3019 ev_set_priority (&w->prepare, EV_MINPRI);
2856 ev_prepare_start (EV_A_ &w->prepare); 3020 ev_prepare_start (EV_A_ &w->prepare);
2857 3021
3022 ev_fork_init (&w->fork, embed_fork_cb);
3023 ev_fork_start (EV_A_ &w->fork);
3024
2858 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3025 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2859 3026
2860 ev_start (EV_A_ (W)w, 1); 3027 ev_start (EV_A_ (W)w, 1);
2861 3028
2862 EV_FREQUENT_CHECK; 3029 EV_FREQUENT_CHECK;
2869 if (expect_false (!ev_is_active (w))) 3036 if (expect_false (!ev_is_active (w)))
2870 return; 3037 return;
2871 3038
2872 EV_FREQUENT_CHECK; 3039 EV_FREQUENT_CHECK;
2873 3040
2874 ev_io_stop (EV_A_ &w->io); 3041 ev_io_stop (EV_A_ &w->io);
2875 ev_prepare_stop (EV_A_ &w->prepare); 3042 ev_prepare_stop (EV_A_ &w->prepare);
2876 3043 ev_fork_stop (EV_A_ &w->fork);
2877 ev_stop (EV_A_ (W)w);
2878 3044
2879 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
2880} 3046}
2881#endif 3047#endif
2882 3048
2979once_cb (EV_P_ struct ev_once *once, int revents) 3145once_cb (EV_P_ struct ev_once *once, int revents)
2980{ 3146{
2981 void (*cb)(int revents, void *arg) = once->cb; 3147 void (*cb)(int revents, void *arg) = once->cb;
2982 void *arg = once->arg; 3148 void *arg = once->arg;
2983 3149
2984 ev_io_stop (EV_A_ &once->io); 3150 ev_io_stop (EV_A_ &once->io);
2985 ev_timer_stop (EV_A_ &once->to); 3151 ev_timer_stop (EV_A_ &once->to);
2986 ev_free (once); 3152 ev_free (once);
2987 3153
2988 cb (revents, arg); 3154 cb (revents, arg);
2989} 3155}
2990 3156
2991static void 3157static void
2992once_cb_io (EV_P_ ev_io *w, int revents) 3158once_cb_io (EV_P_ ev_io *w, int revents)
2993{ 3159{
2994 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3160 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3161
3162 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2995} 3163}
2996 3164
2997static void 3165static void
2998once_cb_to (EV_P_ ev_timer *w, int revents) 3166once_cb_to (EV_P_ ev_timer *w, int revents)
2999{ 3167{
3000 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3168 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3169
3170 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3001} 3171}
3002 3172
3003void 3173void
3004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3174ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3005{ 3175{
3027 ev_timer_set (&once->to, timeout, 0.); 3197 ev_timer_set (&once->to, timeout, 0.);
3028 ev_timer_start (EV_A_ &once->to); 3198 ev_timer_start (EV_A_ &once->to);
3029 } 3199 }
3030} 3200}
3031 3201
3202/*****************************************************************************/
3203
3204#if 0
3205void
3206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207{
3208 int i, j;
3209 ev_watcher_list *wl, *wn;
3210
3211 if (types & (EV_IO | EV_EMBED))
3212 for (i = 0; i < anfdmax; ++i)
3213 for (wl = anfds [i].head; wl; )
3214 {
3215 wn = wl->next;
3216
3217#if EV_EMBED_ENABLE
3218 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3219 {
3220 if (types & EV_EMBED)
3221 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3222 }
3223 else
3224#endif
3225#if EV_USE_INOTIFY
3226 if (ev_cb ((ev_io *)wl) == infy_cb)
3227 ;
3228 else
3229#endif
3230 if ((ev_io *)wl != &pipeev)
3231 if (types & EV_IO)
3232 cb (EV_A_ EV_IO, wl);
3233
3234 wl = wn;
3235 }
3236
3237 if (types & (EV_TIMER | EV_STAT))
3238 for (i = timercnt + HEAP0; i-- > HEAP0; )
3239#if EV_STAT_ENABLE
3240 /*TODO: timer is not always active*/
3241 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3242 {
3243 if (types & EV_STAT)
3244 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3245 }
3246 else
3247#endif
3248 if (types & EV_TIMER)
3249 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3250
3251#if EV_PERIODIC_ENABLE
3252 if (types & EV_PERIODIC)
3253 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3254 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3255#endif
3256
3257#if EV_IDLE_ENABLE
3258 if (types & EV_IDLE)
3259 for (j = NUMPRI; i--; )
3260 for (i = idlecnt [j]; i--; )
3261 cb (EV_A_ EV_IDLE, idles [j][i]);
3262#endif
3263
3264#if EV_FORK_ENABLE
3265 if (types & EV_FORK)
3266 for (i = forkcnt; i--; )
3267 if (ev_cb (forks [i]) != embed_fork_cb)
3268 cb (EV_A_ EV_FORK, forks [i]);
3269#endif
3270
3271#if EV_ASYNC_ENABLE
3272 if (types & EV_ASYNC)
3273 for (i = asynccnt; i--; )
3274 cb (EV_A_ EV_ASYNC, asyncs [i]);
3275#endif
3276
3277 if (types & EV_PREPARE)
3278 for (i = preparecnt; i--; )
3279#if EV_EMBED_ENABLE
3280 if (ev_cb (prepares [i]) != embed_prepare_cb)
3281#endif
3282 cb (EV_A_ EV_PREPARE, prepares [i]);
3283
3284 if (types & EV_CHECK)
3285 for (i = checkcnt; i--; )
3286 cb (EV_A_ EV_CHECK, checks [i]);
3287
3288 if (types & EV_SIGNAL)
3289 for (i = 0; i < signalmax; ++i)
3290 for (wl = signals [i].head; wl; )
3291 {
3292 wn = wl->next;
3293 cb (EV_A_ EV_SIGNAL, wl);
3294 wl = wn;
3295 }
3296
3297 if (types & EV_CHILD)
3298 for (i = EV_PID_HASHSIZE; i--; )
3299 for (wl = childs [i]; wl; )
3300 {
3301 wn = wl->next;
3302 cb (EV_A_ EV_CHILD, wl);
3303 wl = wn;
3304 }
3305/* EV_STAT 0x00001000 /* stat data changed */
3306/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3307}
3308#endif
3309
3032#if EV_MULTIPLICITY 3310#if EV_MULTIPLICITY
3033 #include "ev_wrap.h" 3311 #include "ev_wrap.h"
3034#endif 3312#endif
3035 3313
3036#ifdef __cplusplus 3314#ifdef __cplusplus

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