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Comparing libev/ev.c (file contents):
Revision 1.261 by root, Mon Sep 29 03:31:14 2008 UTC vs.
Revision 1.287 by root, Mon Apr 20 19:45:58 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 {
577 625
578/*****************************************************************************/ 626/*****************************************************************************/
579 627
580#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 */
581 629
582int inline_size 630inline_size int
583array_nextsize (int elem, int cur, int cnt) 631array_nextsize (int elem, int cur, int cnt)
584{ 632{
585 int ncur = cur + 1; 633 int ncur = cur + 1;
586 634
587 do 635 do
604array_realloc (int elem, void *base, int *cur, int cnt) 652array_realloc (int elem, void *base, int *cur, int cnt)
605{ 653{
606 *cur = array_nextsize (elem, *cur, cnt); 654 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 655 return ev_realloc (base, elem * *cur);
608} 656}
657
658#define array_init_zero(base,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 660
610#define array_needsize(type,base,cur,cnt,init) \ 661#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 662 if (expect_false ((cnt) > (cur))) \
612 { \ 663 { \
613 int ocur_ = (cur); \ 664 int ocur_ = (cur); \
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 677 }
627#endif 678#endif
628 679
629#define array_free(stem, idx) \ 680#define array_free(stem, idx) \
630 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
631 682
632/*****************************************************************************/ 683/*****************************************************************************/
633 684
634void noinline 685void noinline
635ev_feed_event (EV_P_ void *w, int revents) 686ev_feed_event (EV_P_ void *w, int revents)
646 pendings [pri][w_->pending - 1].w = w_; 697 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 698 pendings [pri][w_->pending - 1].events = revents;
648 } 699 }
649} 700}
650 701
651void 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
652queue_events (EV_P_ W *events, int eventcnt, int type) 718queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 719{
654 int i; 720 int i;
655 721
656 for (i = 0; i < eventcnt; ++i) 722 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 723 ev_feed_event (EV_A_ events [i], type);
658} 724}
659 725
660/*****************************************************************************/ 726/*****************************************************************************/
661 727
662void inline_size 728inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 729fd_event (EV_P_ int fd, int revents)
677{ 730{
678 ANFD *anfd = anfds + fd; 731 ANFD *anfd = anfds + fd;
679 ev_io *w; 732 ev_io *w;
680 733
692{ 745{
693 if (fd >= 0 && fd < anfdmax) 746 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 747 fd_event (EV_A_ fd, revents);
695} 748}
696 749
697void inline_size 750inline_size void
698fd_reify (EV_P) 751fd_reify (EV_P)
699{ 752{
700 int i; 753 int i;
701 754
702 for (i = 0; i < fdchangecnt; ++i) 755 for (i = 0; i < fdchangecnt; ++i)
717 #ifdef EV_FD_TO_WIN32_HANDLE 770 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else 772 #else
720 anfd->handle = _get_osfhandle (fd); 773 anfd->handle = _get_osfhandle (fd);
721 #endif 774 #endif
722 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));
723 } 776 }
724#endif 777#endif
725 778
726 { 779 {
727 unsigned char o_events = anfd->events; 780 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify; 781 unsigned char o_reify = anfd->reify;
729 782
730 anfd->reify = 0; 783 anfd->reify = 0;
731 anfd->events = events; 784 anfd->events = events;
732 785
733 if (o_events != events || o_reify & EV_IOFDSET) 786 if (o_events != events || o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 787 backend_modify (EV_A_ fd, o_events, events);
735 } 788 }
736 } 789 }
737 790
738 fdchangecnt = 0; 791 fdchangecnt = 0;
739} 792}
740 793
741void inline_size 794inline_size void
742fd_change (EV_P_ int fd, int flags) 795fd_change (EV_P_ int fd, int flags)
743{ 796{
744 unsigned char reify = anfds [fd].reify; 797 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 798 anfds [fd].reify |= flags;
746 799
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 804 fdchanges [fdchangecnt - 1] = fd;
752 } 805 }
753} 806}
754 807
755void inline_speed 808inline_speed void
756fd_kill (EV_P_ int fd) 809fd_kill (EV_P_ int fd)
757{ 810{
758 ev_io *w; 811 ev_io *w;
759 812
760 while ((w = (ev_io *)anfds [fd].head)) 813 while ((w = (ev_io *)anfds [fd].head))
762 ev_io_stop (EV_A_ w); 815 ev_io_stop (EV_A_ w);
763 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);
764 } 817 }
765} 818}
766 819
767int inline_size 820inline_size int
768fd_valid (int fd) 821fd_valid (int fd)
769{ 822{
770#ifdef _WIN32 823#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 824 return _get_osfhandle (fd) != -1;
772#else 825#else
808 861
809 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 863 if (anfds [fd].events)
811 { 864 {
812 anfds [fd].events = 0; 865 anfds [fd].events = 0;
866 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 867 fd_change (EV_A_ fd, EV__IOFDSET | 1);
814 } 868 }
815} 869}
816 870
817/*****************************************************************************/ 871/*****************************************************************************/
818 872
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 888#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 889#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 890#define UPHEAP_DONE(p,k) ((p) == (k))
837 891
838/* away from the root */ 892/* away from the root */
839void inline_speed 893inline_speed void
840downheap (ANHE *heap, int N, int k) 894downheap (ANHE *heap, int N, int k)
841{ 895{
842 ANHE he = heap [k]; 896 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 897 ANHE *E = heap + N + HEAP0;
844 898
884#define HEAP0 1 938#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 939#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 940#define UPHEAP_DONE(p,k) (!(p))
887 941
888/* away from the root */ 942/* away from the root */
889void inline_speed 943inline_speed void
890downheap (ANHE *heap, int N, int k) 944downheap (ANHE *heap, int N, int k)
891{ 945{
892 ANHE he = heap [k]; 946 ANHE he = heap [k];
893 947
894 for (;;) 948 for (;;)
914 ev_active (ANHE_w (he)) = k; 968 ev_active (ANHE_w (he)) = k;
915} 969}
916#endif 970#endif
917 971
918/* towards the root */ 972/* towards the root */
919void inline_speed 973inline_speed void
920upheap (ANHE *heap, int k) 974upheap (ANHE *heap, int k)
921{ 975{
922 ANHE he = heap [k]; 976 ANHE he = heap [k];
923 977
924 for (;;) 978 for (;;)
935 989
936 heap [k] = he; 990 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 991 ev_active (ANHE_w (he)) = k;
938} 992}
939 993
940void inline_size 994inline_size void
941adjustheap (ANHE *heap, int N, int k) 995adjustheap (ANHE *heap, int N, int k)
942{ 996{
943 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]))
944 upheap (heap, k); 998 upheap (heap, k);
945 else 999 else
946 downheap (heap, N, k); 1000 downheap (heap, N, k);
947} 1001}
948 1002
949/* 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 */
950void inline_size 1004inline_size void
951reheap (ANHE *heap, int N) 1005reheap (ANHE *heap, int N)
952{ 1006{
953 int i; 1007 int i;
954 1008
955 /* 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 */
969static ANSIG *signals; 1023static ANSIG *signals;
970static int signalmax; 1024static int signalmax;
971 1025
972static EV_ATOMIC_T gotsig; 1026static EV_ATOMIC_T gotsig;
973 1027
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985
986/*****************************************************************************/ 1028/*****************************************************************************/
987 1029
988void inline_speed 1030inline_speed void
989fd_intern (int fd) 1031fd_intern (int fd)
990{ 1032{
991#ifdef _WIN32 1033#ifdef _WIN32
992 unsigned long arg = 1; 1034 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1011 } 1053 }
1012 else 1054 else
1013#endif 1055#endif
1014 { 1056 {
1015 while (pipe (evpipe)) 1057 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1058 ev_syserr ("(libev) error creating signal/async pipe");
1017 1059
1018 fd_intern (evpipe [0]); 1060 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1061 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1062 ev_io_set (&pipeev, evpipe [0], EV_READ);
1021 } 1063 }
1023 ev_io_start (EV_A_ &pipeev); 1065 ev_io_start (EV_A_ &pipeev);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1067 }
1026} 1068}
1027 1069
1028void inline_size 1070inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1072{
1031 if (!*flag) 1073 if (!*flag)
1032 { 1074 {
1033 int old_errno = errno; /* save errno because write might clobber it */ 1075 int old_errno = errno; /* save errno because write might clobber it */
1111ev_feed_signal_event (EV_P_ int signum) 1153ev_feed_signal_event (EV_P_ int signum)
1112{ 1154{
1113 WL w; 1155 WL w;
1114 1156
1115#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
1116 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));
1117#endif 1159#endif
1118 1160
1119 --signum; 1161 --signum;
1120 1162
1121 if (signum < 0 || signum >= signalmax) 1163 if (signum < 0 || signum >= signalmax)
1137 1179
1138#ifndef WIFCONTINUED 1180#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1181# define WIFCONTINUED(status) 0
1140#endif 1182#endif
1141 1183
1142void inline_speed 1184inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1185child_reap (EV_P_ int chain, int pid, int status)
1144{ 1186{
1145 ev_child *w; 1187 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1189
1250 /* kqueue is borked on everything but netbsd apparently */ 1292 /* kqueue is borked on everything but netbsd apparently */
1251 /* 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 */
1252 flags &= ~EVBACKEND_KQUEUE; 1294 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1295#endif
1254#ifdef __APPLE__ 1296#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1297 /* only select works correctly on that "unix-certified" platform */
1256 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 */
1257#endif 1300#endif
1258 1301
1259 return flags; 1302 return flags;
1260} 1303}
1261 1304
1298static void noinline 1341static void noinline
1299loop_init (EV_P_ unsigned int flags) 1342loop_init (EV_P_ unsigned int flags)
1300{ 1343{
1301 if (!backend) 1344 if (!backend)
1302 { 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
1303#if EV_USE_MONOTONIC 1356#if EV_USE_MONOTONIC
1357 if (!have_monotonic)
1304 { 1358 {
1305 struct timespec ts; 1359 struct timespec ts;
1360
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1362 have_monotonic = 1;
1308 } 1363 }
1309#endif 1364#endif
1310 1365
1311 ev_rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1367 mn_now = get_clock ();
1313 now_floor = mn_now; 1368 now_floor = mn_now;
1412 } 1467 }
1413 1468
1414 ev_free (anfds); anfdmax = 0; 1469 ev_free (anfds); anfdmax = 0;
1415 1470
1416 /* 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);
1417 array_free (fdchange, EMPTY); 1473 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1474 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1475#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1476 array_free (periodic, EMPTY);
1421#endif 1477#endif
1430 1486
1431 backend = 0; 1487 backend = 0;
1432} 1488}
1433 1489
1434#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1491inline_size void infy_fork (EV_P);
1436#endif 1492#endif
1437 1493
1438void inline_size 1494inline_size void
1439loop_fork (EV_P) 1495loop_fork (EV_P)
1440{ 1496{
1441#if EV_USE_PORT 1497#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1499#endif
1514 1570
1515#if EV_VERIFY 1571#if EV_VERIFY
1516static void noinline 1572static void noinline
1517verify_watcher (EV_P_ W w) 1573verify_watcher (EV_P_ W w)
1518{ 1574{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1576
1521 if (w->pending) 1577 if (w->pending)
1522 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));
1523} 1579}
1524 1580
1525static void noinline 1581static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1582verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1583{
1528 int i; 1584 int i;
1529 1585
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1586 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1587 {
1532 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));
1533 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])));
1534 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]))));
1535 1591
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1593 }
1538} 1594}
1539 1595
1540static void noinline 1596static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1597array_verify (EV_P_ W *ws, int cnt)
1542{ 1598{
1543 while (cnt--) 1599 while (cnt--)
1544 { 1600 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1602 verify_watcher (EV_A_ ws [cnt]);
1547 } 1603 }
1548} 1604}
1549#endif 1605#endif
1550 1606
1557 1613
1558 assert (activecnt >= -1); 1614 assert (activecnt >= -1);
1559 1615
1560 assert (fdchangemax >= fdchangecnt); 1616 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1617 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1619
1564 assert (anfdmax >= 0); 1620 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1621 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1622 for (w = anfds [i].head; w; w = w->next)
1567 { 1623 {
1568 verify_watcher (EV_A_ (W)w); 1624 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 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));
1571 } 1627 }
1572 1628
1573 assert (timermax >= timercnt); 1629 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1630 verify_heap (EV_A_ timers, timercnt);
1575 1631
1652{ 1708{
1653#if EV_MULTIPLICITY 1709#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr; 1710 struct ev_loop *loop = ev_default_loop_ptr;
1655#endif 1711#endif
1656 1712
1713 ev_default_loop_ptr = 0;
1714
1657#ifndef _WIN32 1715#ifndef _WIN32
1658 ev_ref (EV_A); /* child watcher */ 1716 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev); 1717 ev_signal_stop (EV_A_ &childev);
1660#endif 1718#endif
1661 1719
1667{ 1725{
1668#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr; 1727 struct ev_loop *loop = ev_default_loop_ptr;
1670#endif 1728#endif
1671 1729
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 1730 postfork = 1; /* must be in line with ev_loop_fork */
1674} 1731}
1675 1732
1676/*****************************************************************************/ 1733/*****************************************************************************/
1677 1734
1678void 1735void
1679ev_invoke (EV_P_ void *w, int revents) 1736ev_invoke (EV_P_ void *w, int revents)
1680{ 1737{
1681 EV_CB_INVOKE ((W)w, revents); 1738 EV_CB_INVOKE ((W)w, revents);
1682} 1739}
1683 1740
1684void inline_speed 1741inline_speed void
1685call_pending (EV_P) 1742call_pending (EV_P)
1686{ 1743{
1687 int pri; 1744 int pri;
1688 1745
1689 for (pri = NUMPRI; pri--; ) 1746 for (pri = NUMPRI; pri--; )
1691 { 1748 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 1750
1694 if (expect_true (p->w)) 1751 if (expect_true (p->w))
1695 { 1752 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1697 1754
1698 p->w->pending = 0; 1755 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 1756 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 1757 EV_FREQUENT_CHECK;
1701 } 1758 }
1702 } 1759 }
1703} 1760}
1704 1761
1705#if EV_IDLE_ENABLE 1762#if EV_IDLE_ENABLE
1706void inline_size 1763inline_size void
1707idle_reify (EV_P) 1764idle_reify (EV_P)
1708{ 1765{
1709 if (expect_false (idleall)) 1766 if (expect_false (idleall))
1710 { 1767 {
1711 int pri; 1768 int pri;
1723 } 1780 }
1724 } 1781 }
1725} 1782}
1726#endif 1783#endif
1727 1784
1728void inline_size 1785inline_size void
1729timers_reify (EV_P) 1786timers_reify (EV_P)
1730{ 1787{
1731 EV_FREQUENT_CHECK; 1788 EV_FREQUENT_CHECK;
1732 1789
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1790 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 1791 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1792 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 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 {
1742 ev_at (w) += w->repeat; 1801 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 1802 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 1803 ev_at (w) = mn_now;
1745 1804
1746 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.));
1747 1806
1748 ANHE_at_cache (timers [HEAP0]); 1807 ANHE_at_cache (timers [HEAP0]);
1749 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);
1750 } 1815 }
1751 else 1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 1817
1754 EV_FREQUENT_CHECK;
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1818 feed_reverse_done (EV_A_ EV_TIMEOUT);
1756 } 1819 }
1757} 1820}
1758 1821
1759#if EV_PERIODIC_ENABLE 1822#if EV_PERIODIC_ENABLE
1760void inline_size 1823inline_size void
1761periodics_reify (EV_P) 1824periodics_reify (EV_P)
1762{ 1825{
1763 EV_FREQUENT_CHECK; 1826 EV_FREQUENT_CHECK;
1764 1827
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 1829 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1830 int feed_count = 0;
1768 1831
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1832 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 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 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 1842
1776 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));
1777 1844
1778 ANHE_at_cache (periodics [HEAP0]); 1845 ANHE_at_cache (periodics [HEAP0]);
1779 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);
1780 } 1872 }
1781 else if (w->interval) 1873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 1874
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1875 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 1876 }
1806} 1877}
1807 1878
1808static void noinline 1879static void noinline
1809periodics_reschedule (EV_P) 1880periodics_reschedule (EV_P)
1825 1896
1826 reheap (periodics, periodiccnt); 1897 reheap (periodics, periodiccnt);
1827} 1898}
1828#endif 1899#endif
1829 1900
1830void 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
1831time_update (EV_P_ ev_tstamp max_block) 1915time_update (EV_P_ ev_tstamp max_block)
1832{ 1916{
1833 int i; 1917 int i;
1834 1918
1835#if EV_USE_MONOTONIC 1919#if EV_USE_MONOTONIC
1868 ev_rt_now = ev_time (); 1952 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 1953 mn_now = get_clock ();
1870 now_floor = mn_now; 1954 now_floor = mn_now;
1871 } 1955 }
1872 1956
1957 /* no timer adjustment, as the monotonic clock doesn't jump */
1958 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 1959# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 1960 periodics_reschedule (EV_A);
1875# endif 1961# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 1962 }
1879 else 1963 else
1880#endif 1964#endif
1881 { 1965 {
1882 ev_rt_now = ev_time (); 1966 ev_rt_now = ev_time ();
1883 1967
1884 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))
1885 { 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);
1886#if EV_PERIODIC_ENABLE 1972#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 1973 periodics_reschedule (EV_A);
1888#endif 1974#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 1975 }
1897 1976
1898 mn_now = ev_rt_now; 1977 mn_now = ev_rt_now;
1899 } 1978 }
1900}
1901
1902void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918} 1979}
1919 1980
1920static int loop_done; 1981static int loop_done;
1921 1982
1922void 1983void
1956 { 2017 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2019 call_pending (EV_A);
1959 } 2020 }
1960 2021
1961 if (expect_false (!activecnt))
1962 break;
1963
1964 /* we might have forked, so reify kernel state if necessary */ 2022 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2023 if (expect_false (postfork))
1966 loop_fork (EV_A); 2024 loop_fork (EV_A);
1967 2025
1968 /* update fd-related kernel structures */ 2026 /* update fd-related kernel structures */
2047ev_unloop (EV_P_ int how) 2105ev_unloop (EV_P_ int how)
2048{ 2106{
2049 loop_done = how; 2107 loop_done = how;
2050} 2108}
2051 2109
2110void
2111ev_ref (EV_P)
2112{
2113 ++activecnt;
2114}
2115
2116void
2117ev_unref (EV_P)
2118{
2119 --activecnt;
2120}
2121
2122void
2123ev_now_update (EV_P)
2124{
2125 time_update (EV_A_ 1e100);
2126}
2127
2128void
2129ev_suspend (EV_P)
2130{
2131 ev_now_update (EV_A);
2132}
2133
2134void
2135ev_resume (EV_P)
2136{
2137 ev_tstamp mn_prev = mn_now;
2138
2139 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE
2142 periodics_reschedule (EV_A);
2143#endif
2144}
2145
2052/*****************************************************************************/ 2146/*****************************************************************************/
2053 2147
2054void inline_size 2148inline_size void
2055wlist_add (WL *head, WL elem) 2149wlist_add (WL *head, WL elem)
2056{ 2150{
2057 elem->next = *head; 2151 elem->next = *head;
2058 *head = elem; 2152 *head = elem;
2059} 2153}
2060 2154
2061void inline_size 2155inline_size void
2062wlist_del (WL *head, WL elem) 2156wlist_del (WL *head, WL elem)
2063{ 2157{
2064 while (*head) 2158 while (*head)
2065 { 2159 {
2066 if (*head == elem) 2160 if (*head == elem)
2071 2165
2072 head = &(*head)->next; 2166 head = &(*head)->next;
2073 } 2167 }
2074} 2168}
2075 2169
2076void inline_speed 2170inline_speed void
2077clear_pending (EV_P_ W w) 2171clear_pending (EV_P_ W w)
2078{ 2172{
2079 if (w->pending) 2173 if (w->pending)
2080 { 2174 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2175 pendings [ABSPRI (w)][w->pending - 1].w = 0;
2098 } 2192 }
2099 else 2193 else
2100 return 0; 2194 return 0;
2101} 2195}
2102 2196
2103void inline_size 2197inline_size void
2104pri_adjust (EV_P_ W w) 2198pri_adjust (EV_P_ W w)
2105{ 2199{
2106 int pri = w->priority; 2200 int pri = w->priority;
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2203 w->priority = pri;
2110} 2204}
2111 2205
2112void inline_speed 2206inline_speed void
2113ev_start (EV_P_ W w, int active) 2207ev_start (EV_P_ W w, int active)
2114{ 2208{
2115 pri_adjust (EV_A_ w); 2209 pri_adjust (EV_A_ w);
2116 w->active = active; 2210 w->active = active;
2117 ev_ref (EV_A); 2211 ev_ref (EV_A);
2118} 2212}
2119 2213
2120void inline_size 2214inline_size void
2121ev_stop (EV_P_ W w) 2215ev_stop (EV_P_ W w)
2122{ 2216{
2123 ev_unref (EV_A); 2217 ev_unref (EV_A);
2124 w->active = 0; 2218 w->active = 0;
2125} 2219}
2132 int fd = w->fd; 2226 int fd = w->fd;
2133 2227
2134 if (expect_false (ev_is_active (w))) 2228 if (expect_false (ev_is_active (w)))
2135 return; 2229 return;
2136 2230
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2231 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2233
2139 EV_FREQUENT_CHECK; 2234 EV_FREQUENT_CHECK;
2140 2235
2141 ev_start (EV_A_ (W)w, 1); 2236 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2238 wlist_add (&anfds[fd].head, (WL)w);
2144 2239
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2146 w->events &= ~EV_IOFDSET; 2241 w->events &= ~EV__IOFDSET;
2147 2242
2148 EV_FREQUENT_CHECK; 2243 EV_FREQUENT_CHECK;
2149} 2244}
2150 2245
2151void noinline 2246void noinline
2153{ 2248{
2154 clear_pending (EV_A_ (W)w); 2249 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2250 if (expect_false (!ev_is_active (w)))
2156 return; 2251 return;
2157 2252
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2253 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 2254
2160 EV_FREQUENT_CHECK; 2255 EV_FREQUENT_CHECK;
2161 2256
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2257 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2258 ev_stop (EV_A_ (W)w);
2173 if (expect_false (ev_is_active (w))) 2268 if (expect_false (ev_is_active (w)))
2174 return; 2269 return;
2175 2270
2176 ev_at (w) += mn_now; 2271 ev_at (w) += mn_now;
2177 2272
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2273 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 2274
2180 EV_FREQUENT_CHECK; 2275 EV_FREQUENT_CHECK;
2181 2276
2182 ++timercnt; 2277 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2278 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2186 ANHE_at_cache (timers [ev_active (w)]); 2281 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2282 upheap (timers, ev_active (w));
2188 2283
2189 EV_FREQUENT_CHECK; 2284 EV_FREQUENT_CHECK;
2190 2285
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2286 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2287}
2193 2288
2194void noinline 2289void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2290ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2291{
2201 EV_FREQUENT_CHECK; 2296 EV_FREQUENT_CHECK;
2202 2297
2203 { 2298 {
2204 int active = ev_active (w); 2299 int active = ev_active (w);
2205 2300
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2301 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2302
2208 --timercnt; 2303 --timercnt;
2209 2304
2210 if (expect_true (active < timercnt + HEAP0)) 2305 if (expect_true (active < timercnt + HEAP0))
2211 { 2306 {
2255 2350
2256 if (w->reschedule_cb) 2351 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2353 else if (w->interval)
2259 { 2354 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 2356 /* this formula differs from the one in periodic_reify because we do not always round up */
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 2358 }
2264 else 2359 else
2265 ev_at (w) = w->offset; 2360 ev_at (w) = w->offset;
2273 ANHE_at_cache (periodics [ev_active (w)]); 2368 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2369 upheap (periodics, ev_active (w));
2275 2370
2276 EV_FREQUENT_CHECK; 2371 EV_FREQUENT_CHECK;
2277 2372
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2373 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 2374}
2280 2375
2281void noinline 2376void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2377ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2378{
2288 EV_FREQUENT_CHECK; 2383 EV_FREQUENT_CHECK;
2289 2384
2290 { 2385 {
2291 int active = ev_active (w); 2386 int active = ev_active (w);
2292 2387
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2388 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2389
2295 --periodiccnt; 2390 --periodiccnt;
2296 2391
2297 if (expect_true (active < periodiccnt + HEAP0)) 2392 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2393 {
2321 2416
2322void noinline 2417void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2418ev_signal_start (EV_P_ ev_signal *w)
2324{ 2419{
2325#if EV_MULTIPLICITY 2420#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif 2422#endif
2328 if (expect_false (ev_is_active (w))) 2423 if (expect_false (ev_is_active (w)))
2329 return; 2424 return;
2330 2425
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2332 2427
2333 evpipe_init (EV_A); 2428 evpipe_init (EV_A);
2334 2429
2335 EV_FREQUENT_CHECK; 2430 EV_FREQUENT_CHECK;
2336 2431
2339 sigset_t full, prev; 2434 sigset_t full, prev;
2340 sigfillset (&full); 2435 sigfillset (&full);
2341 sigprocmask (SIG_SETMASK, &full, &prev); 2436 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif 2437#endif
2343 2438
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2345 2440
2346#ifndef _WIN32 2441#ifndef _WIN32
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2442 sigprocmask (SIG_SETMASK, &prev, 0);
2348#endif 2443#endif
2349 } 2444 }
2387 2482
2388void 2483void
2389ev_child_start (EV_P_ ev_child *w) 2484ev_child_start (EV_P_ ev_child *w)
2390{ 2485{
2391#if EV_MULTIPLICITY 2486#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2487 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 2488#endif
2394 if (expect_false (ev_is_active (w))) 2489 if (expect_false (ev_is_active (w)))
2395 return; 2490 return;
2396 2491
2397 EV_FREQUENT_CHECK; 2492 EV_FREQUENT_CHECK;
2422# ifdef _WIN32 2517# ifdef _WIN32
2423# undef lstat 2518# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2519# define lstat(a,b) _stati64 (a,b)
2425# endif 2520# endif
2426 2521
2427#define DEF_STAT_INTERVAL 5.0074891 2522#define DEF_STAT_INTERVAL 5.0074891
2523#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2524#define MIN_STAT_INTERVAL 0.1074891
2429 2525
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 2527
2432#if EV_USE_INOTIFY 2528#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 2529# define EV_INOTIFY_BUFSIZE 8192
2437{ 2533{
2438 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); 2534 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);
2439 2535
2440 if (w->wd < 0) 2536 if (w->wd < 0)
2441 { 2537 {
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2443 2540
2444 /* monitor some parent directory for speedup hints */ 2541 /* monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 2543 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 2545 {
2449 char path [4096]; 2546 char path [4096];
2450 strcpy (path, w->path); 2547 strcpy (path, w->path);
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2551 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2552 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 2553
2457 char *pend = strrchr (path, '/'); 2554 char *pend = strrchr (path, '/');
2458 2555
2459 if (!pend) 2556 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 2557 break;
2461 2558
2462 *pend = 0; 2559 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 2560 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 2561 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 2563 }
2467 } 2564 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 2565
2471 if (w->wd >= 0) 2566 if (w->wd >= 0)
2567 {
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2569
2570 /* now local changes will be tracked by inotify, but remote changes won't */
2571 /* unless the filesystem it known to be local, we therefore still poll */
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer);
2586 }
2473} 2587}
2474 2588
2475static void noinline 2589static void noinline
2476infy_del (EV_P_ ev_stat *w) 2590infy_del (EV_P_ ev_stat *w)
2477{ 2591{
2491 2605
2492static void noinline 2606static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 2608{
2495 if (slot < 0) 2609 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 2610 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 2612 infy_wd (EV_A_ slot, wd, ev);
2499 else 2613 else
2500 { 2614 {
2501 WL w_; 2615 WL w_;
2507 2621
2508 if (w->wd == wd || wd == -1) 2622 if (w->wd == wd || wd == -1)
2509 { 2623 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 2625 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2512 w->wd = -1; 2627 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 2628 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 2629 }
2515 2630
2516 stat_timer_cb (EV_A_ &w->timer, 0); 2631 stat_timer_cb (EV_A_ &w->timer, 0);
2529 2644
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2646 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2532} 2647}
2533 2648
2534void inline_size 2649inline_size void
2650check_2625 (EV_P)
2651{
2652 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */
2655 struct utsname buf;
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return;
2660
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1;
2670}
2671
2672inline_size void
2535infy_init (EV_P) 2673infy_init (EV_P)
2536{ 2674{
2537 if (fs_fd != -2) 2675 if (fs_fd != -2)
2538 return; 2676 return;
2677
2678 fs_fd = -1;
2679
2680 check_2625 (EV_A);
2539 2681
2540 fs_fd = inotify_init (); 2682 fs_fd = inotify_init ();
2541 2683
2542 if (fs_fd >= 0) 2684 if (fs_fd >= 0)
2543 { 2685 {
2545 ev_set_priority (&fs_w, EV_MAXPRI); 2687 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 2688 ev_io_start (EV_A_ &fs_w);
2547 } 2689 }
2548} 2690}
2549 2691
2550void inline_size 2692inline_size void
2551infy_fork (EV_P) 2693infy_fork (EV_P)
2552{ 2694{
2553 int slot; 2695 int slot;
2554 2696
2555 if (fs_fd < 0) 2697 if (fs_fd < 0)
2571 w->wd = -1; 2713 w->wd = -1;
2572 2714
2573 if (fs_fd >= 0) 2715 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 2716 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 2717 else
2576 ev_timer_start (EV_A_ &w->timer); 2718 ev_timer_again (EV_A_ &w->timer);
2577 } 2719 }
2578
2579 } 2720 }
2580} 2721}
2581 2722
2582#endif 2723#endif
2583 2724
2619 || w->prev.st_atime != w->attr.st_atime 2760 || w->prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 2761 || w->prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 2762 || w->prev.st_ctime != w->attr.st_ctime
2622 ) { 2763 ) {
2623 #if EV_USE_INOTIFY 2764 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0)
2766 {
2624 infy_del (EV_A_ w); 2767 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 2768 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 2769 ev_stat_stat (EV_A_ w); /* avoid race... */
2770 }
2627 #endif 2771 #endif
2628 2772
2629 ev_feed_event (EV_A_ w, EV_STAT); 2773 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 2774 }
2631} 2775}
2634ev_stat_start (EV_P_ ev_stat *w) 2778ev_stat_start (EV_P_ ev_stat *w)
2635{ 2779{
2636 if (expect_false (ev_is_active (w))) 2780 if (expect_false (ev_is_active (w)))
2637 return; 2781 return;
2638 2782
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 2783 ev_stat_stat (EV_A_ w);
2644 2784
2785 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 2786 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 2787
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2788 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 2789 ev_set_priority (&w->timer, ev_priority (w));
2650 2790
2651#if EV_USE_INOTIFY 2791#if EV_USE_INOTIFY
2652 infy_init (EV_A); 2792 infy_init (EV_A);
2653 2793
2654 if (fs_fd >= 0) 2794 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 2795 infy_add (EV_A_ w);
2656 else 2796 else
2657#endif 2797#endif
2658 ev_timer_start (EV_A_ &w->timer); 2798 ev_timer_again (EV_A_ &w->timer);
2659 2799
2660 ev_start (EV_A_ (W)w, 1); 2800 ev_start (EV_A_ (W)w, 1);
2661 2801
2662 EV_FREQUENT_CHECK; 2802 EV_FREQUENT_CHECK;
2663} 2803}
2838static void 2978static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 2979embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 2980{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 2982
2983 ev_embed_stop (EV_A_ w);
2984
2843 { 2985 {
2844 struct ev_loop *loop = w->other; 2986 struct ev_loop *loop = w->other;
2845 2987
2846 ev_loop_fork (EV_A); 2988 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2847 } 2990 }
2991
2992 ev_embed_start (EV_A_ w);
2848} 2993}
2849 2994
2850#if 0 2995#if 0
2851static void 2996static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2997embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2861 if (expect_false (ev_is_active (w))) 3006 if (expect_false (ev_is_active (w)))
2862 return; 3007 return;
2863 3008
2864 { 3009 {
2865 struct ev_loop *loop = w->other; 3010 struct ev_loop *loop = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 3013 }
2869 3014
2870 EV_FREQUENT_CHECK; 3015 EV_FREQUENT_CHECK;
2871 3016
3012} 3157}
3013 3158
3014static void 3159static void
3015once_cb_io (EV_P_ ev_io *w, int revents) 3160once_cb_io (EV_P_ ev_io *w, int revents)
3016{ 3161{
3017 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3162 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3163
3164 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3018} 3165}
3019 3166
3020static void 3167static void
3021once_cb_to (EV_P_ ev_timer *w, int revents) 3168once_cb_to (EV_P_ ev_timer *w, int revents)
3022{ 3169{
3023 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3170 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3171
3172 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3024} 3173}
3025 3174
3026void 3175void
3027ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3176ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3028{ 3177{
3050 ev_timer_set (&once->to, timeout, 0.); 3199 ev_timer_set (&once->to, timeout, 0.);
3051 ev_timer_start (EV_A_ &once->to); 3200 ev_timer_start (EV_A_ &once->to);
3052 } 3201 }
3053} 3202}
3054 3203
3204/*****************************************************************************/
3205
3206#if 0
3207void
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209{
3210 int i, j;
3211 ev_watcher_list *wl, *wn;
3212
3213 if (types & (EV_IO | EV_EMBED))
3214 for (i = 0; i < anfdmax; ++i)
3215 for (wl = anfds [i].head; wl; )
3216 {
3217 wn = wl->next;
3218
3219#if EV_EMBED_ENABLE
3220 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3221 {
3222 if (types & EV_EMBED)
3223 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3224 }
3225 else
3226#endif
3227#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ;
3230 else
3231#endif
3232 if ((ev_io *)wl != &pipeev)
3233 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl);
3235
3236 wl = wn;
3237 }
3238
3239 if (types & (EV_TIMER | EV_STAT))
3240 for (i = timercnt + HEAP0; i-- > HEAP0; )
3241#if EV_STAT_ENABLE
3242 /*TODO: timer is not always active*/
3243 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3244 {
3245 if (types & EV_STAT)
3246 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3247 }
3248 else
3249#endif
3250 if (types & EV_TIMER)
3251 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3252
3253#if EV_PERIODIC_ENABLE
3254 if (types & EV_PERIODIC)
3255 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3257#endif
3258
3259#if EV_IDLE_ENABLE
3260 if (types & EV_IDLE)
3261 for (j = NUMPRI; i--; )
3262 for (i = idlecnt [j]; i--; )
3263 cb (EV_A_ EV_IDLE, idles [j][i]);
3264#endif
3265
3266#if EV_FORK_ENABLE
3267 if (types & EV_FORK)
3268 for (i = forkcnt; i--; )
3269 if (ev_cb (forks [i]) != embed_fork_cb)
3270 cb (EV_A_ EV_FORK, forks [i]);
3271#endif
3272
3273#if EV_ASYNC_ENABLE
3274 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif
3278
3279 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]);
3285
3286 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]);
3289
3290 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i)
3292 for (wl = signals [i].head; wl; )
3293 {
3294 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn;
3297 }
3298
3299 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; )
3301 for (wl = childs [i]; wl; )
3302 {
3303 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn;
3306 }
3307/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309}
3310#endif
3311
3055#if EV_MULTIPLICITY 3312#if EV_MULTIPLICITY
3056 #include "ev_wrap.h" 3313 #include "ev_wrap.h"
3057#endif 3314#endif
3058 3315
3059#ifdef __cplusplus 3316#ifdef __cplusplus

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