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Comparing libev/ev.c (file contents):
Revision 1.246 by root, Wed May 21 12:51:38 2008 UTC vs.
Revision 1.284 by root, Wed Apr 15 17:49:26 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
… …
126# define EV_USE_EVENTFD 1 138# define EV_USE_EVENTFD 1
127# else 139# else
128# define EV_USE_EVENTFD 0 140# define EV_USE_EVENTFD 0
129# endif 141# endif
130# endif 142# endif
131 143
132#endif 144#endif
133 145
134#include <math.h> 146#include <math.h>
135#include <stdlib.h> 147#include <stdlib.h>
136#include <fcntl.h> 148#include <fcntl.h>
… …
154#ifndef _WIN32 166#ifndef _WIN32
155# include <sys/time.h> 167# include <sys/time.h>
156# include <sys/wait.h> 168# include <sys/wait.h>
157# include <unistd.h> 169# include <unistd.h>
158#else 170#else
171# include <io.h>
159# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 173# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
163# endif 176# endif
164#endif 177#endif
165 178
166/* 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 */
167 180
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
168#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
169# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
170#endif 195#endif
171 196
172#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 199#endif
175 200
176#ifndef EV_USE_NANOSLEEP 201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
177# define EV_USE_NANOSLEEP 0 205# define EV_USE_NANOSLEEP 0
206# endif
178#endif 207#endif
179 208
180#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
182#endif 211#endif
… …
235# else 264# else
236# define EV_USE_EVENTFD 0 265# define EV_USE_EVENTFD 0
237# endif 266# endif
238#endif 267#endif
239 268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
240#ifndef EV_USE_4HEAP 279#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 280# define EV_USE_4HEAP !EV_MINIMAL
242#endif 281#endif
243 282
244#ifndef EV_HEAP_CACHE_AT 283#ifndef EV_HEAP_CACHE_AT
… …
267# include <sys/select.h> 306# include <sys/select.h>
268# endif 307# endif
269#endif 308#endif
270 309
271#if EV_USE_INOTIFY 310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
272# 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
273#endif 319#endif
274 320
275#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
276# 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
277#endif 332#endif
278 333
279#if EV_USE_EVENTFD 334#if EV_USE_EVENTFD
280/* 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 */
281# include <stdint.h> 336# include <stdint.h>
… …
287} 342}
288# endif 343# endif
289#endif 344#endif
290 345
291/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
292 353
293/* 354/*
294 * This is used to avoid floating point rounding problems. 355 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 356 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 357 * to ensure progress, time-wise, even when rounding
… …
336typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
337 398
338#define ev_active(w) ((W)(w))->active 399#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 400#define ev_at(w) ((WT)(w))->at
340 401
341#if EV_USE_MONOTONIC 402#if EV_USE_REALTIME
342/* 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 */
343/* 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
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
345#endif 410#endif
346 411
347#ifdef _WIN32 412#ifdef _WIN32
348# include "ev_win32.c" 413# include "ev_win32.c"
… …
357{ 422{
358 syserr_cb = cb; 423 syserr_cb = cb;
359} 424}
360 425
361static void noinline 426static void noinline
362syserr (const char *msg) 427ev_syserr (const char *msg)
363{ 428{
364 if (!msg) 429 if (!msg)
365 msg = "(libev) system error"; 430 msg = "(libev) system error";
366 431
367 if (syserr_cb) 432 if (syserr_cb)
… …
418typedef struct 483typedef struct
419{ 484{
420 WL head; 485 WL head;
421 unsigned char events; 486 unsigned char events;
422 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
423#if EV_SELECT_IS_WINSOCKET 493#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 494 SOCKET handle;
425#endif 495#endif
426} ANFD; 496} ANFD;
427 497
… …
444 typedef struct { 514 typedef struct {
445 ev_tstamp at; 515 ev_tstamp at;
446 WT w; 516 WT w;
447 } ANHE; 517 } ANHE;
448 518
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 519 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 520 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 522#else
453 typedef WT ANHE; 523 typedef WT ANHE;
454 524
455 #define ANHE_w(he) (he) 525 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 526 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 527 #define ANHE_at_cache(he)
458#endif 528#endif
459 529
460#if EV_MULTIPLICITY 530#if EV_MULTIPLICITY
461 531
462 struct ev_loop 532 struct ev_loop
… …
487 557
488ev_tstamp 558ev_tstamp
489ev_time (void) 559ev_time (void)
490{ 560{
491#if EV_USE_REALTIME 561#if EV_USE_REALTIME
562 if (expect_true (have_realtime))
563 {
492 struct timespec ts; 564 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 565 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 566 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 567 }
568#endif
569
496 struct timeval tv; 570 struct timeval tv;
497 gettimeofday (&tv, 0); 571 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 572 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 573}
501 574
502ev_tstamp inline_size 575inline_size ev_tstamp
503get_clock (void) 576get_clock (void)
504{ 577{
505#if EV_USE_MONOTONIC 578#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 579 if (expect_true (have_monotonic))
507 { 580 {
… …
540 struct timeval tv; 613 struct timeval tv;
541 614
542 tv.tv_sec = (time_t)delay; 615 tv.tv_sec = (time_t)delay;
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544 617
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 */
545 select (0, 0, 0, 0, &tv); 621 select (0, 0, 0, 0, &tv);
546#endif 622#endif
547 } 623 }
548} 624}
549 625
550/*****************************************************************************/ 626/*****************************************************************************/
551 627
552#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 */
553 629
554int inline_size 630inline_size int
555array_nextsize (int elem, int cur, int cnt) 631array_nextsize (int elem, int cur, int cnt)
556{ 632{
557 int ncur = cur + 1; 633 int ncur = cur + 1;
558 634
559 do 635 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 652array_realloc (int elem, void *base, int *cur, int cnt)
577{ 653{
578 *cur = array_nextsize (elem, *cur, cnt); 654 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 655 return ev_realloc (base, elem * *cur);
580} 656}
657
658#define array_init_zero(base,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 660
582#define array_needsize(type,base,cur,cnt,init) \ 661#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 662 if (expect_false ((cnt) > (cur))) \
584 { \ 663 { \
585 int ocur_ = (cur); \ 664 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 677 }
599#endif 678#endif
600 679
601#define array_free(stem, idx) \ 680#define array_free(stem, idx) \
602 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
603 682
604/*****************************************************************************/ 683/*****************************************************************************/
605 684
606void noinline 685void noinline
607ev_feed_event (EV_P_ void *w, int revents) 686ev_feed_event (EV_P_ void *w, int revents)
… …
618 pendings [pri][w_->pending - 1].w = w_; 697 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 698 pendings [pri][w_->pending - 1].events = revents;
620 } 699 }
621} 700}
622 701
623void 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
624queue_events (EV_P_ W *events, int eventcnt, int type) 718queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 719{
626 int i; 720 int i;
627 721
628 for (i = 0; i < eventcnt; ++i) 722 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 723 ev_feed_event (EV_A_ events [i], type);
630} 724}
631 725
632/*****************************************************************************/ 726/*****************************************************************************/
633 727
634void inline_size 728inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 729fd_event (EV_P_ int fd, int revents)
649{ 730{
650 ANFD *anfd = anfds + fd; 731 ANFD *anfd = anfds + fd;
651 ev_io *w; 732 ev_io *w;
652 733
… …
664{ 745{
665 if (fd >= 0 && fd < anfdmax) 746 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 747 fd_event (EV_A_ fd, revents);
667} 748}
668 749
669void inline_size 750inline_size void
670fd_reify (EV_P) 751fd_reify (EV_P)
671{ 752{
672 int i; 753 int i;
673 754
674 for (i = 0; i < fdchangecnt; ++i) 755 for (i = 0; i < fdchangecnt; ++i)
… …
683 events |= (unsigned char)w->events; 764 events |= (unsigned char)w->events;
684 765
685#if EV_SELECT_IS_WINSOCKET 766#if EV_SELECT_IS_WINSOCKET
686 if (events) 767 if (events)
687 { 768 {
688 unsigned long argp; 769 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE 770 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else 772 #else
692 anfd->handle = _get_osfhandle (fd); 773 anfd->handle = _get_osfhandle (fd);
693 #endif 774 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695 } 776 }
696#endif 777#endif
697 778
698 { 779 {
699 unsigned char o_events = anfd->events; 780 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify; 781 unsigned char o_reify = anfd->reify;
701 782
702 anfd->reify = 0; 783 anfd->reify = 0;
703 anfd->events = events; 784 anfd->events = events;
704 785
705 if (o_events != events || o_reify & EV_IOFDSET) 786 if (o_events != events || o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 787 backend_modify (EV_A_ fd, o_events, events);
707 } 788 }
708 } 789 }
709 790
710 fdchangecnt = 0; 791 fdchangecnt = 0;
711} 792}
712 793
713void inline_size 794inline_size void
714fd_change (EV_P_ int fd, int flags) 795fd_change (EV_P_ int fd, int flags)
715{ 796{
716 unsigned char reify = anfds [fd].reify; 797 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 798 anfds [fd].reify |= flags;
718 799
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 804 fdchanges [fdchangecnt - 1] = fd;
724 } 805 }
725} 806}
726 807
727void inline_speed 808inline_speed void
728fd_kill (EV_P_ int fd) 809fd_kill (EV_P_ int fd)
729{ 810{
730 ev_io *w; 811 ev_io *w;
731 812
732 while ((w = (ev_io *)anfds [fd].head)) 813 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 815 ev_io_stop (EV_A_ w);
735 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);
736 } 817 }
737} 818}
738 819
739int inline_size 820inline_size int
740fd_valid (int fd) 821fd_valid (int fd)
741{ 822{
742#ifdef _WIN32 823#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 824 return _get_osfhandle (fd) != -1;
744#else 825#else
… …
752{ 833{
753 int fd; 834 int fd;
754 835
755 for (fd = 0; fd < anfdmax; ++fd) 836 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 837 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 838 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 839 fd_kill (EV_A_ fd);
759} 840}
760 841
761/* called on ENOMEM in select/poll to kill some fds and retry */ 842/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 843static void noinline
… …
780 861
781 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 863 if (anfds [fd].events)
783 { 864 {
784 anfds [fd].events = 0; 865 anfds [fd].events = 0;
866 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 867 fd_change (EV_A_ fd, EV__IOFDSET | 1);
786 } 868 }
787} 869}
788 870
789/*****************************************************************************/ 871/*****************************************************************************/
790 872
… …
802 */ 884 */
803#if EV_USE_4HEAP 885#if EV_USE_4HEAP
804 886
805#define DHEAP 4 887#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 888#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807 889#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808/* towards the root */ 890#define UPHEAP_DONE(p,k) ((p) == (k))
809void inline_speed
810upheap (ANHE *heap, int k)
811{
812 ANHE he = heap [k];
813
814 for (;;)
815 {
816 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819 break;
820
821 heap [k] = heap [p];
822 ev_active (ANHE_w (heap [k])) = k;
823 k = p;
824 }
825
826 ev_active (ANHE_w (he)) = k;
827 heap [k] = he;
828}
829 891
830/* away from the root */ 892/* away from the root */
831void inline_speed 893inline_speed void
832downheap (ANHE *heap, int N, int k) 894downheap (ANHE *heap, int N, int k)
833{ 895{
834 ANHE he = heap [k]; 896 ANHE he = heap [k];
835 ANHE *E = heap + N + HEAP0; 897 ANHE *E = heap + N + HEAP0;
836 898
837 for (;;) 899 for (;;)
838 { 900 {
839 ev_tstamp minat; 901 ev_tstamp minat;
840 ANHE *minpos; 902 ANHE *minpos;
841 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 903 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842 904
843 // find minimum child 905 /* find minimum child */
844 if (expect_true (pos + DHEAP - 1 < E)) 906 if (expect_true (pos + DHEAP - 1 < E))
845 { 907 {
846 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 908 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 909 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 910 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
… …
859 break; 921 break;
860 922
861 if (ANHE_at (he) <= minat) 923 if (ANHE_at (he) <= minat)
862 break; 924 break;
863 925
926 heap [k] = *minpos;
864 ev_active (ANHE_w (*minpos)) = k; 927 ev_active (ANHE_w (*minpos)) = k;
865 heap [k] = *minpos;
866 928
867 k = minpos - heap; 929 k = minpos - heap;
868 } 930 }
869 931
932 heap [k] = he;
870 ev_active (ANHE_w (he)) = k; 933 ev_active (ANHE_w (he)) = k;
871 heap [k] = he;
872} 934}
873 935
874#else // 4HEAP 936#else /* 4HEAP */
875 937
876#define HEAP0 1 938#define HEAP0 1
939#define HPARENT(k) ((k) >> 1)
940#define UPHEAP_DONE(p,k) (!(p))
877 941
878/* towards the root */ 942/* away from the root */
879void inline_speed 943inline_speed void
880upheap (ANHE *heap, int k) 944downheap (ANHE *heap, int N, int k)
881{ 945{
882 ANHE he = heap [k]; 946 ANHE he = heap [k];
883 947
884 for (;;) 948 for (;;)
885 { 949 {
886 int p = k >> 1; 950 int c = k << 1;
887 951
888 /* maybe we could use a dummy element at heap [0]? */ 952 if (c > N + HEAP0 - 1)
889 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890 break; 953 break;
891 954
892 heap [k] = heap [p];
893 ev_active (ANHE_w (heap [k])) = k;
894 k = p;
895 }
896
897 heap [k] = he;
898 ev_active (ANHE_w (heap [k])) = k;
899}
900
901/* away from the root */
902void inline_speed
903downheap (ANHE *heap, int N, int k)
904{
905 ANHE he = heap [k];
906
907 for (;;)
908 {
909 int c = k << 1;
910
911 if (c > N)
912 break;
913
914 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915 ? 1 : 0; 956 ? 1 : 0;
916 957
917 if (ANHE_at (he) <= ANHE_at (heap [c])) 958 if (ANHE_at (he) <= ANHE_at (heap [c]))
918 break; 959 break;
919 960
… …
926 heap [k] = he; 967 heap [k] = he;
927 ev_active (ANHE_w (he)) = k; 968 ev_active (ANHE_w (he)) = k;
928} 969}
929#endif 970#endif
930 971
931void inline_size 972/* towards the root */
973inline_speed void
974upheap (ANHE *heap, int k)
975{
976 ANHE he = heap [k];
977
978 for (;;)
979 {
980 int p = HPARENT (k);
981
982 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
983 break;
984
985 heap [k] = heap [p];
986 ev_active (ANHE_w (heap [k])) = k;
987 k = p;
988 }
989
990 heap [k] = he;
991 ev_active (ANHE_w (he)) = k;
992}
993
994inline_size void
932adjustheap (ANHE *heap, int N, int k) 995adjustheap (ANHE *heap, int N, int k)
933{ 996{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
934 upheap (heap, k); 998 upheap (heap, k);
999 else
935 downheap (heap, N, k); 1000 downheap (heap, N, k);
1001}
1002
1003/* rebuild the heap: this function is used only once and executed rarely */
1004inline_size void
1005reheap (ANHE *heap, int N)
1006{
1007 int i;
1008
1009 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1010 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1011 for (i = 0; i < N; ++i)
1012 upheap (heap, i + HEAP0);
936} 1013}
937 1014
938/*****************************************************************************/ 1015/*****************************************************************************/
939 1016
940typedef struct 1017typedef struct
… …
946static ANSIG *signals; 1023static ANSIG *signals;
947static int signalmax; 1024static int signalmax;
948 1025
949static EV_ATOMIC_T gotsig; 1026static EV_ATOMIC_T gotsig;
950 1027
951void inline_size
952signals_init (ANSIG *base, int count)
953{
954 while (count--)
955 {
956 base->head = 0;
957 base->gotsig = 0;
958
959 ++base;
960 }
961}
962
963/*****************************************************************************/ 1028/*****************************************************************************/
964 1029
965void inline_speed 1030inline_speed void
966fd_intern (int fd) 1031fd_intern (int fd)
967{ 1032{
968#ifdef _WIN32 1033#ifdef _WIN32
969 int arg = 1; 1034 unsigned long arg = 1;
970 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971#else 1036#else
972 fcntl (fd, F_SETFD, FD_CLOEXEC); 1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
973 fcntl (fd, F_SETFL, O_NONBLOCK); 1038 fcntl (fd, F_SETFL, O_NONBLOCK);
974#endif 1039#endif
… …
988 } 1053 }
989 else 1054 else
990#endif 1055#endif
991 { 1056 {
992 while (pipe (evpipe)) 1057 while (pipe (evpipe))
993 syserr ("(libev) error creating signal/async pipe"); 1058 ev_syserr ("(libev) error creating signal/async pipe");
994 1059
995 fd_intern (evpipe [0]); 1060 fd_intern (evpipe [0]);
996 fd_intern (evpipe [1]); 1061 fd_intern (evpipe [1]);
997 ev_io_set (&pipeev, evpipe [0], EV_READ); 1062 ev_io_set (&pipeev, evpipe [0], EV_READ);
998 } 1063 }
… …
1000 ev_io_start (EV_A_ &pipeev); 1065 ev_io_start (EV_A_ &pipeev);
1001 ev_unref (EV_A); /* watcher should not keep loop alive */ 1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1002 } 1067 }
1003} 1068}
1004 1069
1005void inline_size 1070inline_size void
1006evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007{ 1072{
1008 if (!*flag) 1073 if (!*flag)
1009 { 1074 {
1010 int old_errno = errno; /* save errno because write might clobber it */ 1075 int old_errno = errno; /* save errno because write might clobber it */
… …
1088ev_feed_signal_event (EV_P_ int signum) 1153ev_feed_signal_event (EV_P_ int signum)
1089{ 1154{
1090 WL w; 1155 WL w;
1091 1156
1092#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
1093 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));
1094#endif 1159#endif
1095 1160
1096 --signum; 1161 --signum;
1097 1162
1098 if (signum < 0 || signum >= signalmax) 1163 if (signum < 0 || signum >= signalmax)
… …
1114 1179
1115#ifndef WIFCONTINUED 1180#ifndef WIFCONTINUED
1116# define WIFCONTINUED(status) 0 1181# define WIFCONTINUED(status) 0
1117#endif 1182#endif
1118 1183
1119void inline_speed 1184inline_speed void
1120child_reap (EV_P_ int chain, int pid, int status) 1185child_reap (EV_P_ int chain, int pid, int status)
1121{ 1186{
1122 ev_child *w; 1187 ev_child *w;
1123 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124 1189
… …
1227 /* kqueue is borked on everything but netbsd apparently */ 1292 /* kqueue is borked on everything but netbsd apparently */
1228 /* 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 */
1229 flags &= ~EVBACKEND_KQUEUE; 1294 flags &= ~EVBACKEND_KQUEUE;
1230#endif 1295#endif
1231#ifdef __APPLE__ 1296#ifdef __APPLE__
1232 // flags &= ~EVBACKEND_KQUEUE; for documentation 1297 /* only select works correctly on that "unix-certified" platform */
1233 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 */
1234#endif 1300#endif
1235 1301
1236 return flags; 1302 return flags;
1237} 1303}
1238 1304
… …
1275static void noinline 1341static void noinline
1276loop_init (EV_P_ unsigned int flags) 1342loop_init (EV_P_ unsigned int flags)
1277{ 1343{
1278 if (!backend) 1344 if (!backend)
1279 { 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
1280#if EV_USE_MONOTONIC 1356#if EV_USE_MONOTONIC
1357 if (!have_monotonic)
1281 { 1358 {
1282 struct timespec ts; 1359 struct timespec ts;
1360
1283 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284 have_monotonic = 1; 1362 have_monotonic = 1;
1285 } 1363 }
1286#endif 1364#endif
1287 1365
1288 ev_rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1289 mn_now = get_clock (); 1367 mn_now = get_clock ();
1290 now_floor = mn_now; 1368 now_floor = mn_now;
… …
1389 } 1467 }
1390 1468
1391 ev_free (anfds); anfdmax = 0; 1469 ev_free (anfds); anfdmax = 0;
1392 1470
1393 /* 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);
1394 array_free (fdchange, EMPTY); 1473 array_free (fdchange, EMPTY);
1395 array_free (timer, EMPTY); 1474 array_free (timer, EMPTY);
1396#if EV_PERIODIC_ENABLE 1475#if EV_PERIODIC_ENABLE
1397 array_free (periodic, EMPTY); 1476 array_free (periodic, EMPTY);
1398#endif 1477#endif
… …
1407 1486
1408 backend = 0; 1487 backend = 0;
1409} 1488}
1410 1489
1411#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1412void inline_size infy_fork (EV_P); 1491inline_size void infy_fork (EV_P);
1413#endif 1492#endif
1414 1493
1415void inline_size 1494inline_size void
1416loop_fork (EV_P) 1495loop_fork (EV_P)
1417{ 1496{
1418#if EV_USE_PORT 1497#if EV_USE_PORT
1419 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420#endif 1499#endif
… …
1458 1537
1459 postfork = 0; 1538 postfork = 0;
1460} 1539}
1461 1540
1462#if EV_MULTIPLICITY 1541#if EV_MULTIPLICITY
1542
1463struct ev_loop * 1543struct ev_loop *
1464ev_loop_new (unsigned int flags) 1544ev_loop_new (unsigned int flags)
1465{ 1545{
1466 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467 1547
… …
1485void 1565void
1486ev_loop_fork (EV_P) 1566ev_loop_fork (EV_P)
1487{ 1567{
1488 postfork = 1; /* must be in line with ev_default_fork */ 1568 postfork = 1; /* must be in line with ev_default_fork */
1489} 1569}
1570
1571#if EV_VERIFY
1572static void noinline
1573verify_watcher (EV_P_ W w)
1574{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576
1577 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579}
1580
1581static void noinline
1582verify_heap (EV_P_ ANHE *heap, int N)
1583{
1584 int i;
1585
1586 for (i = HEAP0; i < N + HEAP0; ++i)
1587 {
1588 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1589 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1590 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1591
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 }
1594}
1595
1596static void noinline
1597array_verify (EV_P_ W *ws, int cnt)
1598{
1599 while (cnt--)
1600 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]);
1603 }
1604}
1605#endif
1606
1607void
1608ev_loop_verify (EV_P)
1609{
1610#if EV_VERIFY
1611 int i;
1612 WL w;
1613
1614 assert (activecnt >= -1);
1615
1616 assert (fdchangemax >= fdchangecnt);
1617 for (i = 0; i < fdchangecnt; ++i)
1618 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1619
1620 assert (anfdmax >= 0);
1621 for (i = 0; i < anfdmax; ++i)
1622 for (w = anfds [i].head; w; w = w->next)
1623 {
1624 verify_watcher (EV_A_ (W)w);
1625 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1626 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1627 }
1628
1629 assert (timermax >= timercnt);
1630 verify_heap (EV_A_ timers, timercnt);
1631
1632#if EV_PERIODIC_ENABLE
1633 assert (periodicmax >= periodiccnt);
1634 verify_heap (EV_A_ periodics, periodiccnt);
1635#endif
1636
1637 for (i = NUMPRI; i--; )
1638 {
1639 assert (pendingmax [i] >= pendingcnt [i]);
1640#if EV_IDLE_ENABLE
1641 assert (idleall >= 0);
1642 assert (idlemax [i] >= idlecnt [i]);
1643 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1644#endif
1645 }
1646
1647#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif
1651
1652#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif
1656
1657 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt);
1659
1660 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt);
1662
1663# if 0
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1490#endif 1666# endif
1667#endif
1668}
1669
1670#endif /* multiplicity */
1491 1671
1492#if EV_MULTIPLICITY 1672#if EV_MULTIPLICITY
1493struct ev_loop * 1673struct ev_loop *
1494ev_default_loop_init (unsigned int flags) 1674ev_default_loop_init (unsigned int flags)
1495#else 1675#else
… …
1528{ 1708{
1529#if EV_MULTIPLICITY 1709#if EV_MULTIPLICITY
1530 struct ev_loop *loop = ev_default_loop_ptr; 1710 struct ev_loop *loop = ev_default_loop_ptr;
1531#endif 1711#endif
1532 1712
1713 ev_default_loop_ptr = 0;
1714
1533#ifndef _WIN32 1715#ifndef _WIN32
1534 ev_ref (EV_A); /* child watcher */ 1716 ev_ref (EV_A); /* child watcher */
1535 ev_signal_stop (EV_A_ &childev); 1717 ev_signal_stop (EV_A_ &childev);
1536#endif 1718#endif
1537 1719
… …
1543{ 1725{
1544#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1545 struct ev_loop *loop = ev_default_loop_ptr; 1727 struct ev_loop *loop = ev_default_loop_ptr;
1546#endif 1728#endif
1547 1729
1548 if (backend)
1549 postfork = 1; /* must be in line with ev_loop_fork */ 1730 postfork = 1; /* must be in line with ev_loop_fork */
1550} 1731}
1551 1732
1552/*****************************************************************************/ 1733/*****************************************************************************/
1553 1734
1554void 1735void
1555ev_invoke (EV_P_ void *w, int revents) 1736ev_invoke (EV_P_ void *w, int revents)
1556{ 1737{
1557 EV_CB_INVOKE ((W)w, revents); 1738 EV_CB_INVOKE ((W)w, revents);
1558} 1739}
1559 1740
1560void inline_speed 1741inline_speed void
1561call_pending (EV_P) 1742call_pending (EV_P)
1562{ 1743{
1563 int pri; 1744 int pri;
1564 1745
1565 for (pri = NUMPRI; pri--; ) 1746 for (pri = NUMPRI; pri--; )
… …
1567 { 1748 {
1568 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569 1750
1570 if (expect_true (p->w)) 1751 if (expect_true (p->w))
1571 { 1752 {
1572 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1573 1754
1574 p->w->pending = 0; 1755 p->w->pending = 0;
1575 EV_CB_INVOKE (p->w, p->events); 1756 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK;
1576 } 1758 }
1577 } 1759 }
1578} 1760}
1579 1761
1580#if EV_IDLE_ENABLE 1762#if EV_IDLE_ENABLE
1581void inline_size 1763inline_size void
1582idle_reify (EV_P) 1764idle_reify (EV_P)
1583{ 1765{
1584 if (expect_false (idleall)) 1766 if (expect_false (idleall))
1585 { 1767 {
1586 int pri; 1768 int pri;
… …
1598 } 1780 }
1599 } 1781 }
1600} 1782}
1601#endif 1783#endif
1602 1784
1603void inline_size 1785inline_size void
1604timers_reify (EV_P) 1786timers_reify (EV_P)
1605{ 1787{
1788 EV_FREQUENT_CHECK;
1789
1606 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1790 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607 { 1791 {
1608 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1792 do
1609
1610 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612 /* first reschedule or stop timer */
1613 if (w->repeat)
1614 { 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 {
1615 ev_at (w) += w->repeat; 1801 ev_at (w) += w->repeat;
1616 if (ev_at (w) < mn_now) 1802 if (ev_at (w) < mn_now)
1617 ev_at (w) = mn_now; 1803 ev_at (w) = mn_now;
1618 1804
1619 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.));
1620 1806
1621 ANHE_at_set (timers [HEAP0]); 1807 ANHE_at_cache (timers [HEAP0]);
1622 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);
1623 } 1815 }
1624 else 1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 1817
1627 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1818 feed_reverse_done (EV_A_ EV_TIMEOUT);
1628 } 1819 }
1629} 1820}
1630 1821
1631#if EV_PERIODIC_ENABLE 1822#if EV_PERIODIC_ENABLE
1632void inline_size 1823inline_size void
1633periodics_reify (EV_P) 1824periodics_reify (EV_P)
1634{ 1825{
1826 EV_FREQUENT_CHECK;
1827
1635 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636 { 1829 {
1637 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1830 int feed_count = 0;
1638 1831
1639 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1832 do
1640
1641 /* first reschedule or stop timer */
1642 if (w->reschedule_cb)
1643 { 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 {
1644 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645 1842
1646 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));
1647 1844
1648 ANHE_at_set (periodics [HEAP0]); 1845 ANHE_at_cache (periodics [HEAP0]);
1649 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);
1650 } 1872 }
1651 else if (w->interval) 1873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652 {
1653 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654 /* if next trigger time is not sufficiently in the future, put it there */
1655 /* this might happen because of floating point inexactness */
1656 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1657 {
1658 ev_at (w) += w->interval;
1659 1874
1660 /* if interval is unreasonably low we might still have a time in the past */
1661 /* so correct this. this will make the periodic very inexact, but the user */
1662 /* has effectively asked to get triggered more often than possible */
1663 if (ev_at (w) < ev_rt_now)
1664 ev_at (w) = ev_rt_now;
1665 }
1666
1667 ANHE_at_set (periodics [HEAP0]);
1668 downheap (periodics, periodiccnt, HEAP0);
1669 }
1670 else
1671 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1672
1673 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1875 feed_reverse_done (EV_A_ EV_PERIODIC);
1674 } 1876 }
1675} 1877}
1676 1878
1677static void noinline 1879static void noinline
1678periodics_reschedule (EV_P) 1880periodics_reschedule (EV_P)
… …
1687 if (w->reschedule_cb) 1889 if (w->reschedule_cb)
1688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1689 else if (w->interval) 1891 else if (w->interval)
1690 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1691 1893
1692 ANHE_at_set (periodics [i]); 1894 ANHE_at_cache (periodics [i]);
1693 } 1895 }
1694 1896
1695 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 1897 reheap (periodics, periodiccnt);
1696 /* also, this is easy and corretc for both 2-heaps and 4-heaps */
1697 for (i = 0; i < periodiccnt; ++i)
1698 upheap (periodics, i + HEAP0);
1699} 1898}
1700#endif 1899#endif
1701 1900
1702void inline_speed 1901inline_speed void
1703time_update (EV_P_ ev_tstamp max_block) 1902time_update (EV_P_ ev_tstamp max_block)
1704{ 1903{
1705 int i; 1904 int i;
1706 1905
1707#if EV_USE_MONOTONIC 1906#if EV_USE_MONOTONIC
… …
1761 /* adjust timers. this is easy, as the offset is the same for all of them */ 1960 /* adjust timers. this is easy, as the offset is the same for all of them */
1762 for (i = 0; i < timercnt; ++i) 1961 for (i = 0; i < timercnt; ++i)
1763 { 1962 {
1764 ANHE *he = timers + i + HEAP0; 1963 ANHE *he = timers + i + HEAP0;
1765 ANHE_w (*he)->at += ev_rt_now - mn_now; 1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1766 ANHE_at_set (*he); 1965 ANHE_at_cache (*he);
1767 } 1966 }
1768 } 1967 }
1769 1968
1770 mn_now = ev_rt_now; 1969 mn_now = ev_rt_now;
1771 } 1970 }
… …
1781ev_unref (EV_P) 1980ev_unref (EV_P)
1782{ 1981{
1783 --activecnt; 1982 --activecnt;
1784} 1983}
1785 1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1786static int loop_done; 1991static int loop_done;
1787 1992
1788void 1993void
1789ev_loop (EV_P_ int flags) 1994ev_loop (EV_P_ int flags)
1790{ 1995{
… …
1792 1997
1793 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1998 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1794 1999
1795 do 2000 do
1796 { 2001 {
2002#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A);
2004#endif
2005
1797#ifndef _WIN32 2006#ifndef _WIN32
1798 if (expect_false (curpid)) /* penalise the forking check even more */ 2007 if (expect_false (curpid)) /* penalise the forking check even more */
1799 if (expect_false (getpid () != curpid)) 2008 if (expect_false (getpid () != curpid))
1800 { 2009 {
1801 curpid = getpid (); 2010 curpid = getpid ();
… …
1818 { 2027 {
1819 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1820 call_pending (EV_A); 2029 call_pending (EV_A);
1821 } 2030 }
1822 2031
1823 if (expect_false (!activecnt))
1824 break;
1825
1826 /* we might have forked, so reify kernel state if necessary */ 2032 /* we might have forked, so reify kernel state if necessary */
1827 if (expect_false (postfork)) 2033 if (expect_false (postfork))
1828 loop_fork (EV_A); 2034 loop_fork (EV_A);
1829 2035
1830 /* update fd-related kernel structures */ 2036 /* update fd-related kernel structures */
… …
1837 2043
1838 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1839 { 2045 {
1840 /* update time to cancel out callback processing overhead */ 2046 /* update time to cancel out callback processing overhead */
1841 time_update (EV_A_ 1e100); 2047 time_update (EV_A_ 1e100);
1842
1843 waittime = MAX_BLOCKTIME;
1844 2048
1845 if (timercnt) 2049 if (timercnt)
1846 { 2050 {
1847 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1848 if (waittime > to) waittime = to; 2052 if (waittime > to) waittime = to;
… …
1911 loop_done = how; 2115 loop_done = how;
1912} 2116}
1913 2117
1914/*****************************************************************************/ 2118/*****************************************************************************/
1915 2119
1916void inline_size 2120inline_size void
1917wlist_add (WL *head, WL elem) 2121wlist_add (WL *head, WL elem)
1918{ 2122{
1919 elem->next = *head; 2123 elem->next = *head;
1920 *head = elem; 2124 *head = elem;
1921} 2125}
1922 2126
1923void inline_size 2127inline_size void
1924wlist_del (WL *head, WL elem) 2128wlist_del (WL *head, WL elem)
1925{ 2129{
1926 while (*head) 2130 while (*head)
1927 { 2131 {
1928 if (*head == elem) 2132 if (*head == elem)
… …
1933 2137
1934 head = &(*head)->next; 2138 head = &(*head)->next;
1935 } 2139 }
1936} 2140}
1937 2141
1938void inline_speed 2142inline_speed void
1939clear_pending (EV_P_ W w) 2143clear_pending (EV_P_ W w)
1940{ 2144{
1941 if (w->pending) 2145 if (w->pending)
1942 { 2146 {
1943 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2147 pendings [ABSPRI (w)][w->pending - 1].w = 0;
… …
1960 } 2164 }
1961 else 2165 else
1962 return 0; 2166 return 0;
1963} 2167}
1964 2168
1965void inline_size 2169inline_size void
1966pri_adjust (EV_P_ W w) 2170pri_adjust (EV_P_ W w)
1967{ 2171{
1968 int pri = w->priority; 2172 int pri = w->priority;
1969 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1970 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1971 w->priority = pri; 2175 w->priority = pri;
1972} 2176}
1973 2177
1974void inline_speed 2178inline_speed void
1975ev_start (EV_P_ W w, int active) 2179ev_start (EV_P_ W w, int active)
1976{ 2180{
1977 pri_adjust (EV_A_ w); 2181 pri_adjust (EV_A_ w);
1978 w->active = active; 2182 w->active = active;
1979 ev_ref (EV_A); 2183 ev_ref (EV_A);
1980} 2184}
1981 2185
1982void inline_size 2186inline_size void
1983ev_stop (EV_P_ W w) 2187ev_stop (EV_P_ W w)
1984{ 2188{
1985 ev_unref (EV_A); 2189 ev_unref (EV_A);
1986 w->active = 0; 2190 w->active = 0;
1987} 2191}
… …
1994 int fd = w->fd; 2198 int fd = w->fd;
1995 2199
1996 if (expect_false (ev_is_active (w))) 2200 if (expect_false (ev_is_active (w)))
1997 return; 2201 return;
1998 2202
1999 assert (("ev_io_start called with negative fd", fd >= 0)); 2203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205
2206 EV_FREQUENT_CHECK;
2000 2207
2001 ev_start (EV_A_ (W)w, 1); 2208 ev_start (EV_A_ (W)w, 1);
2002 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2003 wlist_add (&anfds[fd].head, (WL)w); 2210 wlist_add (&anfds[fd].head, (WL)w);
2004 2211
2005 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2006 w->events &= ~EV_IOFDSET; 2213 w->events &= ~EV__IOFDSET;
2214
2215 EV_FREQUENT_CHECK;
2007} 2216}
2008 2217
2009void noinline 2218void noinline
2010ev_io_stop (EV_P_ ev_io *w) 2219ev_io_stop (EV_P_ ev_io *w)
2011{ 2220{
2012 clear_pending (EV_A_ (W)w); 2221 clear_pending (EV_A_ (W)w);
2013 if (expect_false (!ev_is_active (w))) 2222 if (expect_false (!ev_is_active (w)))
2014 return; 2223 return;
2015 2224
2016 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2225 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2226
2227 EV_FREQUENT_CHECK;
2017 2228
2018 wlist_del (&anfds[w->fd].head, (WL)w); 2229 wlist_del (&anfds[w->fd].head, (WL)w);
2019 ev_stop (EV_A_ (W)w); 2230 ev_stop (EV_A_ (W)w);
2020 2231
2021 fd_change (EV_A_ w->fd, 1); 2232 fd_change (EV_A_ w->fd, 1);
2233
2234 EV_FREQUENT_CHECK;
2022} 2235}
2023 2236
2024void noinline 2237void noinline
2025ev_timer_start (EV_P_ ev_timer *w) 2238ev_timer_start (EV_P_ ev_timer *w)
2026{ 2239{
2027 if (expect_false (ev_is_active (w))) 2240 if (expect_false (ev_is_active (w)))
2028 return; 2241 return;
2029 2242
2030 ev_at (w) += mn_now; 2243 ev_at (w) += mn_now;
2031 2244
2032 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2245 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2033 2246
2247 EV_FREQUENT_CHECK;
2248
2249 ++timercnt;
2034 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2250 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2035 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2251 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2036 ANHE_w (timers [ev_active (w)]) = (WT)w; 2252 ANHE_w (timers [ev_active (w)]) = (WT)w;
2037 ANHE_at_set (timers [ev_active (w)]); 2253 ANHE_at_cache (timers [ev_active (w)]);
2038 upheap (timers, ev_active (w)); 2254 upheap (timers, ev_active (w));
2039 2255
2256 EV_FREQUENT_CHECK;
2257
2040 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2258 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2041} 2259}
2042 2260
2043void noinline 2261void noinline
2044ev_timer_stop (EV_P_ ev_timer *w) 2262ev_timer_stop (EV_P_ ev_timer *w)
2045{ 2263{
2046 clear_pending (EV_A_ (W)w); 2264 clear_pending (EV_A_ (W)w);
2047 if (expect_false (!ev_is_active (w))) 2265 if (expect_false (!ev_is_active (w)))
2048 return; 2266 return;
2049 2267
2268 EV_FREQUENT_CHECK;
2269
2050 { 2270 {
2051 int active = ev_active (w); 2271 int active = ev_active (w);
2052 2272
2053 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2273 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2054 2274
2275 --timercnt;
2276
2055 if (expect_true (active < timercnt + HEAP0 - 1)) 2277 if (expect_true (active < timercnt + HEAP0))
2056 { 2278 {
2057 timers [active] = timers [timercnt + HEAP0 - 1]; 2279 timers [active] = timers [timercnt + HEAP0];
2058 adjustheap (timers, timercnt, active); 2280 adjustheap (timers, timercnt, active);
2059 } 2281 }
2060
2061 --timercnt;
2062 } 2282 }
2283
2284 EV_FREQUENT_CHECK;
2063 2285
2064 ev_at (w) -= mn_now; 2286 ev_at (w) -= mn_now;
2065 2287
2066 ev_stop (EV_A_ (W)w); 2288 ev_stop (EV_A_ (W)w);
2067} 2289}
2068 2290
2069void noinline 2291void noinline
2070ev_timer_again (EV_P_ ev_timer *w) 2292ev_timer_again (EV_P_ ev_timer *w)
2071{ 2293{
2294 EV_FREQUENT_CHECK;
2295
2072 if (ev_is_active (w)) 2296 if (ev_is_active (w))
2073 { 2297 {
2074 if (w->repeat) 2298 if (w->repeat)
2075 { 2299 {
2076 ev_at (w) = mn_now + w->repeat; 2300 ev_at (w) = mn_now + w->repeat;
2077 ANHE_at_set (timers [ev_active (w)]); 2301 ANHE_at_cache (timers [ev_active (w)]);
2078 adjustheap (timers, timercnt, ev_active (w)); 2302 adjustheap (timers, timercnt, ev_active (w));
2079 } 2303 }
2080 else 2304 else
2081 ev_timer_stop (EV_A_ w); 2305 ev_timer_stop (EV_A_ w);
2082 } 2306 }
2083 else if (w->repeat) 2307 else if (w->repeat)
2084 { 2308 {
2085 ev_at (w) = w->repeat; 2309 ev_at (w) = w->repeat;
2086 ev_timer_start (EV_A_ w); 2310 ev_timer_start (EV_A_ w);
2087 } 2311 }
2312
2313 EV_FREQUENT_CHECK;
2088} 2314}
2089 2315
2090#if EV_PERIODIC_ENABLE 2316#if EV_PERIODIC_ENABLE
2091void noinline 2317void noinline
2092ev_periodic_start (EV_P_ ev_periodic *w) 2318ev_periodic_start (EV_P_ ev_periodic *w)
… …
2096 2322
2097 if (w->reschedule_cb) 2323 if (w->reschedule_cb)
2098 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2324 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2099 else if (w->interval) 2325 else if (w->interval)
2100 { 2326 {
2101 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2327 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2102 /* this formula differs from the one in periodic_reify because we do not always round up */ 2328 /* this formula differs from the one in periodic_reify because we do not always round up */
2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2329 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2104 } 2330 }
2105 else 2331 else
2106 ev_at (w) = w->offset; 2332 ev_at (w) = w->offset;
2107 2333
2334 EV_FREQUENT_CHECK;
2335
2336 ++periodiccnt;
2108 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2337 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2109 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2338 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2110 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2339 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2111 ANHE_at_set (periodics [ev_active (w)]); 2340 ANHE_at_cache (periodics [ev_active (w)]);
2112 upheap (periodics, ev_active (w)); 2341 upheap (periodics, ev_active (w));
2113 2342
2343 EV_FREQUENT_CHECK;
2344
2114 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2345 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2115} 2346}
2116 2347
2117void noinline 2348void noinline
2118ev_periodic_stop (EV_P_ ev_periodic *w) 2349ev_periodic_stop (EV_P_ ev_periodic *w)
2119{ 2350{
2120 clear_pending (EV_A_ (W)w); 2351 clear_pending (EV_A_ (W)w);
2121 if (expect_false (!ev_is_active (w))) 2352 if (expect_false (!ev_is_active (w)))
2122 return; 2353 return;
2123 2354
2355 EV_FREQUENT_CHECK;
2356
2124 { 2357 {
2125 int active = ev_active (w); 2358 int active = ev_active (w);
2126 2359
2127 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2360 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2128 2361
2362 --periodiccnt;
2363
2129 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2364 if (expect_true (active < periodiccnt + HEAP0))
2130 { 2365 {
2131 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2366 periodics [active] = periodics [periodiccnt + HEAP0];
2132 adjustheap (periodics, periodiccnt, active); 2367 adjustheap (periodics, periodiccnt, active);
2133 } 2368 }
2134
2135 --periodiccnt;
2136 } 2369 }
2370
2371 EV_FREQUENT_CHECK;
2137 2372
2138 ev_stop (EV_A_ (W)w); 2373 ev_stop (EV_A_ (W)w);
2139} 2374}
2140 2375
2141void noinline 2376void noinline
… …
2153 2388
2154void noinline 2389void noinline
2155ev_signal_start (EV_P_ ev_signal *w) 2390ev_signal_start (EV_P_ ev_signal *w)
2156{ 2391{
2157#if EV_MULTIPLICITY 2392#if EV_MULTIPLICITY
2158 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2393 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2159#endif 2394#endif
2160 if (expect_false (ev_is_active (w))) 2395 if (expect_false (ev_is_active (w)))
2161 return; 2396 return;
2162 2397
2163 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2398 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2164 2399
2165 evpipe_init (EV_A); 2400 evpipe_init (EV_A);
2401
2402 EV_FREQUENT_CHECK;
2166 2403
2167 { 2404 {
2168#ifndef _WIN32 2405#ifndef _WIN32
2169 sigset_t full, prev; 2406 sigset_t full, prev;
2170 sigfillset (&full); 2407 sigfillset (&full);
2171 sigprocmask (SIG_SETMASK, &full, &prev); 2408 sigprocmask (SIG_SETMASK, &full, &prev);
2172#endif 2409#endif
2173 2410
2174 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2175 2412
2176#ifndef _WIN32 2413#ifndef _WIN32
2177 sigprocmask (SIG_SETMASK, &prev, 0); 2414 sigprocmask (SIG_SETMASK, &prev, 0);
2178#endif 2415#endif
2179 } 2416 }
… …
2191 sigfillset (&sa.sa_mask); 2428 sigfillset (&sa.sa_mask);
2192 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2429 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2193 sigaction (w->signum, &sa, 0); 2430 sigaction (w->signum, &sa, 0);
2194#endif 2431#endif
2195 } 2432 }
2433
2434 EV_FREQUENT_CHECK;
2196} 2435}
2197 2436
2198void noinline 2437void noinline
2199ev_signal_stop (EV_P_ ev_signal *w) 2438ev_signal_stop (EV_P_ ev_signal *w)
2200{ 2439{
2201 clear_pending (EV_A_ (W)w); 2440 clear_pending (EV_A_ (W)w);
2202 if (expect_false (!ev_is_active (w))) 2441 if (expect_false (!ev_is_active (w)))
2203 return; 2442 return;
2204 2443
2444 EV_FREQUENT_CHECK;
2445
2205 wlist_del (&signals [w->signum - 1].head, (WL)w); 2446 wlist_del (&signals [w->signum - 1].head, (WL)w);
2206 ev_stop (EV_A_ (W)w); 2447 ev_stop (EV_A_ (W)w);
2207 2448
2208 if (!signals [w->signum - 1].head) 2449 if (!signals [w->signum - 1].head)
2209 signal (w->signum, SIG_DFL); 2450 signal (w->signum, SIG_DFL);
2451
2452 EV_FREQUENT_CHECK;
2210} 2453}
2211 2454
2212void 2455void
2213ev_child_start (EV_P_ ev_child *w) 2456ev_child_start (EV_P_ ev_child *w)
2214{ 2457{
2215#if EV_MULTIPLICITY 2458#if EV_MULTIPLICITY
2216 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2459 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2217#endif 2460#endif
2218 if (expect_false (ev_is_active (w))) 2461 if (expect_false (ev_is_active (w)))
2219 return; 2462 return;
2220 2463
2464 EV_FREQUENT_CHECK;
2465
2221 ev_start (EV_A_ (W)w, 1); 2466 ev_start (EV_A_ (W)w, 1);
2222 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2467 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2468
2469 EV_FREQUENT_CHECK;
2223} 2470}
2224 2471
2225void 2472void
2226ev_child_stop (EV_P_ ev_child *w) 2473ev_child_stop (EV_P_ ev_child *w)
2227{ 2474{
2228 clear_pending (EV_A_ (W)w); 2475 clear_pending (EV_A_ (W)w);
2229 if (expect_false (!ev_is_active (w))) 2476 if (expect_false (!ev_is_active (w)))
2230 return; 2477 return;
2231 2478
2479 EV_FREQUENT_CHECK;
2480
2232 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2233 ev_stop (EV_A_ (W)w); 2482 ev_stop (EV_A_ (W)w);
2483
2484 EV_FREQUENT_CHECK;
2234} 2485}
2235 2486
2236#if EV_STAT_ENABLE 2487#if EV_STAT_ENABLE
2237 2488
2238# ifdef _WIN32 2489# ifdef _WIN32
2239# undef lstat 2490# undef lstat
2240# define lstat(a,b) _stati64 (a,b) 2491# define lstat(a,b) _stati64 (a,b)
2241# endif 2492# endif
2242 2493
2243#define DEF_STAT_INTERVAL 5.0074891 2494#define DEF_STAT_INTERVAL 5.0074891
2495#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2244#define MIN_STAT_INTERVAL 0.1074891 2496#define MIN_STAT_INTERVAL 0.1074891
2245 2497
2246static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2498static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2247 2499
2248#if EV_USE_INOTIFY 2500#if EV_USE_INOTIFY
2249# define EV_INOTIFY_BUFSIZE 8192 2501# define EV_INOTIFY_BUFSIZE 8192
… …
2253{ 2505{
2254 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); 2506 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);
2255 2507
2256 if (w->wd < 0) 2508 if (w->wd < 0)
2257 { 2509 {
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2258 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2511 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2259 2512
2260 /* monitor some parent directory for speedup hints */ 2513 /* monitor some parent directory for speedup hints */
2261 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2262 /* but an efficiency issue only */ 2515 /* but an efficiency issue only */
2263 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2264 { 2517 {
2265 char path [4096]; 2518 char path [4096];
2266 strcpy (path, w->path); 2519 strcpy (path, w->path);
… …
2270 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2523 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2271 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2524 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2272 2525
2273 char *pend = strrchr (path, '/'); 2526 char *pend = strrchr (path, '/');
2274 2527
2275 if (!pend) 2528 if (!pend || pend == path)
2276 break; /* whoops, no '/', complain to your admin */ 2529 break;
2277 2530
2278 *pend = 0; 2531 *pend = 0;
2279 w->wd = inotify_add_watch (fs_fd, path, mask); 2532 w->wd = inotify_add_watch (fs_fd, path, mask);
2280 } 2533 }
2281 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2282 } 2535 }
2283 } 2536 }
2284 else
2285 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2286 2537
2287 if (w->wd >= 0) 2538 if (w->wd >= 0)
2539 {
2288 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2540 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2541
2542 /* now local changes will be tracked by inotify, but remote changes won't */
2543 /* unless the filesystem it known to be local, we therefore still poll */
2544 /* also do poll on <2.6.25, but with normal frequency */
2545 struct statfs sfs;
2546
2547 if (fs_2625 && !statfs (w->path, &sfs))
2548 if (sfs.f_type == 0x1373 /* devfs */
2549 || sfs.f_type == 0xEF53 /* ext2/3 */
2550 || sfs.f_type == 0x3153464a /* jfs */
2551 || sfs.f_type == 0x52654973 /* reiser3 */
2552 || sfs.f_type == 0x01021994 /* tempfs */
2553 || sfs.f_type == 0x58465342 /* xfs */)
2554 return;
2555
2556 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557 ev_timer_again (EV_A_ &w->timer);
2558 }
2289} 2559}
2290 2560
2291static void noinline 2561static void noinline
2292infy_del (EV_P_ ev_stat *w) 2562infy_del (EV_P_ ev_stat *w)
2293{ 2563{
… …
2307 2577
2308static void noinline 2578static void noinline
2309infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2310{ 2580{
2311 if (slot < 0) 2581 if (slot < 0)
2312 /* overflow, need to check for all hahs slots */ 2582 /* overflow, need to check for all hash slots */
2313 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2314 infy_wd (EV_A_ slot, wd, ev); 2584 infy_wd (EV_A_ slot, wd, ev);
2315 else 2585 else
2316 { 2586 {
2317 WL w_; 2587 WL w_;
… …
2323 2593
2324 if (w->wd == wd || wd == -1) 2594 if (w->wd == wd || wd == -1)
2325 { 2595 {
2326 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2327 { 2597 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2328 w->wd = -1; 2599 w->wd = -1;
2329 infy_add (EV_A_ w); /* re-add, no matter what */ 2600 infy_add (EV_A_ w); /* re-add, no matter what */
2330 } 2601 }
2331 2602
2332 stat_timer_cb (EV_A_ &w->timer, 0); 2603 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2345 2616
2346 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2617 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2347 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2618 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2348} 2619}
2349 2620
2350void inline_size 2621inline_size void
2622check_2625 (EV_P)
2623{
2624 /* kernels < 2.6.25 are borked
2625 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626 */
2627 struct utsname buf;
2628 int major, minor, micro;
2629
2630 if (uname (&buf))
2631 return;
2632
2633 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634 return;
2635
2636 if (major < 2
2637 || (major == 2 && minor < 6)
2638 || (major == 2 && minor == 6 && micro < 25))
2639 return;
2640
2641 fs_2625 = 1;
2642}
2643
2644inline_size void
2351infy_init (EV_P) 2645infy_init (EV_P)
2352{ 2646{
2353 if (fs_fd != -2) 2647 if (fs_fd != -2)
2354 return; 2648 return;
2649
2650 fs_fd = -1;
2651
2652 check_2625 (EV_A);
2355 2653
2356 fs_fd = inotify_init (); 2654 fs_fd = inotify_init ();
2357 2655
2358 if (fs_fd >= 0) 2656 if (fs_fd >= 0)
2359 { 2657 {
… …
2361 ev_set_priority (&fs_w, EV_MAXPRI); 2659 ev_set_priority (&fs_w, EV_MAXPRI);
2362 ev_io_start (EV_A_ &fs_w); 2660 ev_io_start (EV_A_ &fs_w);
2363 } 2661 }
2364} 2662}
2365 2663
2366void inline_size 2664inline_size void
2367infy_fork (EV_P) 2665infy_fork (EV_P)
2368{ 2666{
2369 int slot; 2667 int slot;
2370 2668
2371 if (fs_fd < 0) 2669 if (fs_fd < 0)
… …
2387 w->wd = -1; 2685 w->wd = -1;
2388 2686
2389 if (fs_fd >= 0) 2687 if (fs_fd >= 0)
2390 infy_add (EV_A_ w); /* re-add, no matter what */ 2688 infy_add (EV_A_ w); /* re-add, no matter what */
2391 else 2689 else
2392 ev_timer_start (EV_A_ &w->timer); 2690 ev_timer_again (EV_A_ &w->timer);
2393 } 2691 }
2394
2395 } 2692 }
2396} 2693}
2397 2694
2695#endif
2696
2697#ifdef _WIN32
2698# define EV_LSTAT(p,b) _stati64 (p, b)
2699#else
2700# define EV_LSTAT(p,b) lstat (p, b)
2398#endif 2701#endif
2399 2702
2400void 2703void
2401ev_stat_stat (EV_P_ ev_stat *w) 2704ev_stat_stat (EV_P_ ev_stat *w)
2402{ 2705{
… …
2429 || w->prev.st_atime != w->attr.st_atime 2732 || w->prev.st_atime != w->attr.st_atime
2430 || w->prev.st_mtime != w->attr.st_mtime 2733 || w->prev.st_mtime != w->attr.st_mtime
2431 || w->prev.st_ctime != w->attr.st_ctime 2734 || w->prev.st_ctime != w->attr.st_ctime
2432 ) { 2735 ) {
2433 #if EV_USE_INOTIFY 2736 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0)
2738 {
2434 infy_del (EV_A_ w); 2739 infy_del (EV_A_ w);
2435 infy_add (EV_A_ w); 2740 infy_add (EV_A_ w);
2436 ev_stat_stat (EV_A_ w); /* avoid race... */ 2741 ev_stat_stat (EV_A_ w); /* avoid race... */
2742 }
2437 #endif 2743 #endif
2438 2744
2439 ev_feed_event (EV_A_ w, EV_STAT); 2745 ev_feed_event (EV_A_ w, EV_STAT);
2440 } 2746 }
2441} 2747}
… …
2444ev_stat_start (EV_P_ ev_stat *w) 2750ev_stat_start (EV_P_ ev_stat *w)
2445{ 2751{
2446 if (expect_false (ev_is_active (w))) 2752 if (expect_false (ev_is_active (w)))
2447 return; 2753 return;
2448 2754
2449 /* since we use memcmp, we need to clear any padding data etc. */
2450 memset (&w->prev, 0, sizeof (ev_statdata));
2451 memset (&w->attr, 0, sizeof (ev_statdata));
2452
2453 ev_stat_stat (EV_A_ w); 2755 ev_stat_stat (EV_A_ w);
2454 2756
2757 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2455 if (w->interval < MIN_STAT_INTERVAL) 2758 w->interval = MIN_STAT_INTERVAL;
2456 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2457 2759
2458 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2760 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2459 ev_set_priority (&w->timer, ev_priority (w)); 2761 ev_set_priority (&w->timer, ev_priority (w));
2460 2762
2461#if EV_USE_INOTIFY 2763#if EV_USE_INOTIFY
2462 infy_init (EV_A); 2764 infy_init (EV_A);
2463 2765
2464 if (fs_fd >= 0) 2766 if (fs_fd >= 0)
2465 infy_add (EV_A_ w); 2767 infy_add (EV_A_ w);
2466 else 2768 else
2467#endif 2769#endif
2468 ev_timer_start (EV_A_ &w->timer); 2770 ev_timer_again (EV_A_ &w->timer);
2469 2771
2470 ev_start (EV_A_ (W)w, 1); 2772 ev_start (EV_A_ (W)w, 1);
2773
2774 EV_FREQUENT_CHECK;
2471} 2775}
2472 2776
2473void 2777void
2474ev_stat_stop (EV_P_ ev_stat *w) 2778ev_stat_stop (EV_P_ ev_stat *w)
2475{ 2779{
2476 clear_pending (EV_A_ (W)w); 2780 clear_pending (EV_A_ (W)w);
2477 if (expect_false (!ev_is_active (w))) 2781 if (expect_false (!ev_is_active (w)))
2478 return; 2782 return;
2479 2783
2784 EV_FREQUENT_CHECK;
2785
2480#if EV_USE_INOTIFY 2786#if EV_USE_INOTIFY
2481 infy_del (EV_A_ w); 2787 infy_del (EV_A_ w);
2482#endif 2788#endif
2483 ev_timer_stop (EV_A_ &w->timer); 2789 ev_timer_stop (EV_A_ &w->timer);
2484 2790
2485 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
2486} 2794}
2487#endif 2795#endif
2488 2796
2489#if EV_IDLE_ENABLE 2797#if EV_IDLE_ENABLE
2490void 2798void
… …
2492{ 2800{
2493 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2494 return; 2802 return;
2495 2803
2496 pri_adjust (EV_A_ (W)w); 2804 pri_adjust (EV_A_ (W)w);
2805
2806 EV_FREQUENT_CHECK;
2497 2807
2498 { 2808 {
2499 int active = ++idlecnt [ABSPRI (w)]; 2809 int active = ++idlecnt [ABSPRI (w)];
2500 2810
2501 ++idleall; 2811 ++idleall;
2502 ev_start (EV_A_ (W)w, active); 2812 ev_start (EV_A_ (W)w, active);
2503 2813
2504 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2814 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2505 idles [ABSPRI (w)][active - 1] = w; 2815 idles [ABSPRI (w)][active - 1] = w;
2506 } 2816 }
2817
2818 EV_FREQUENT_CHECK;
2507} 2819}
2508 2820
2509void 2821void
2510ev_idle_stop (EV_P_ ev_idle *w) 2822ev_idle_stop (EV_P_ ev_idle *w)
2511{ 2823{
2512 clear_pending (EV_A_ (W)w); 2824 clear_pending (EV_A_ (W)w);
2513 if (expect_false (!ev_is_active (w))) 2825 if (expect_false (!ev_is_active (w)))
2514 return; 2826 return;
2515 2827
2828 EV_FREQUENT_CHECK;
2829
2516 { 2830 {
2517 int active = ev_active (w); 2831 int active = ev_active (w);
2518 2832
2519 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2833 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2520 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2834 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2521 2835
2522 ev_stop (EV_A_ (W)w); 2836 ev_stop (EV_A_ (W)w);
2523 --idleall; 2837 --idleall;
2524 } 2838 }
2839
2840 EV_FREQUENT_CHECK;
2525} 2841}
2526#endif 2842#endif
2527 2843
2528void 2844void
2529ev_prepare_start (EV_P_ ev_prepare *w) 2845ev_prepare_start (EV_P_ ev_prepare *w)
2530{ 2846{
2531 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2532 return; 2848 return;
2849
2850 EV_FREQUENT_CHECK;
2533 2851
2534 ev_start (EV_A_ (W)w, ++preparecnt); 2852 ev_start (EV_A_ (W)w, ++preparecnt);
2535 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2853 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2536 prepares [preparecnt - 1] = w; 2854 prepares [preparecnt - 1] = w;
2855
2856 EV_FREQUENT_CHECK;
2537} 2857}
2538 2858
2539void 2859void
2540ev_prepare_stop (EV_P_ ev_prepare *w) 2860ev_prepare_stop (EV_P_ ev_prepare *w)
2541{ 2861{
2542 clear_pending (EV_A_ (W)w); 2862 clear_pending (EV_A_ (W)w);
2543 if (expect_false (!ev_is_active (w))) 2863 if (expect_false (!ev_is_active (w)))
2544 return; 2864 return;
2545 2865
2866 EV_FREQUENT_CHECK;
2867
2546 { 2868 {
2547 int active = ev_active (w); 2869 int active = ev_active (w);
2548 2870
2549 prepares [active - 1] = prepares [--preparecnt]; 2871 prepares [active - 1] = prepares [--preparecnt];
2550 ev_active (prepares [active - 1]) = active; 2872 ev_active (prepares [active - 1]) = active;
2551 } 2873 }
2552 2874
2553 ev_stop (EV_A_ (W)w); 2875 ev_stop (EV_A_ (W)w);
2876
2877 EV_FREQUENT_CHECK;
2554} 2878}
2555 2879
2556void 2880void
2557ev_check_start (EV_P_ ev_check *w) 2881ev_check_start (EV_P_ ev_check *w)
2558{ 2882{
2559 if (expect_false (ev_is_active (w))) 2883 if (expect_false (ev_is_active (w)))
2560 return; 2884 return;
2885
2886 EV_FREQUENT_CHECK;
2561 2887
2562 ev_start (EV_A_ (W)w, ++checkcnt); 2888 ev_start (EV_A_ (W)w, ++checkcnt);
2563 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2889 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2564 checks [checkcnt - 1] = w; 2890 checks [checkcnt - 1] = w;
2891
2892 EV_FREQUENT_CHECK;
2565} 2893}
2566 2894
2567void 2895void
2568ev_check_stop (EV_P_ ev_check *w) 2896ev_check_stop (EV_P_ ev_check *w)
2569{ 2897{
2570 clear_pending (EV_A_ (W)w); 2898 clear_pending (EV_A_ (W)w);
2571 if (expect_false (!ev_is_active (w))) 2899 if (expect_false (!ev_is_active (w)))
2572 return; 2900 return;
2573 2901
2902 EV_FREQUENT_CHECK;
2903
2574 { 2904 {
2575 int active = ev_active (w); 2905 int active = ev_active (w);
2576 2906
2577 checks [active - 1] = checks [--checkcnt]; 2907 checks [active - 1] = checks [--checkcnt];
2578 ev_active (checks [active - 1]) = active; 2908 ev_active (checks [active - 1]) = active;
2579 } 2909 }
2580 2910
2581 ev_stop (EV_A_ (W)w); 2911 ev_stop (EV_A_ (W)w);
2912
2913 EV_FREQUENT_CHECK;
2582} 2914}
2583 2915
2584#if EV_EMBED_ENABLE 2916#if EV_EMBED_ENABLE
2585void noinline 2917void noinline
2586ev_embed_sweep (EV_P_ ev_embed *w) 2918ev_embed_sweep (EV_P_ ev_embed *w)
… …
2613 ev_loop (EV_A_ EVLOOP_NONBLOCK); 2945 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2614 } 2946 }
2615 } 2947 }
2616} 2948}
2617 2949
2950static void
2951embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2952{
2953 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954
2955 ev_embed_stop (EV_A_ w);
2956
2957 {
2958 struct ev_loop *loop = w->other;
2959
2960 ev_loop_fork (EV_A);
2961 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2962 }
2963
2964 ev_embed_start (EV_A_ w);
2965}
2966
2618#if 0 2967#if 0
2619static void 2968static void
2620embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2969embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2621{ 2970{
2622 ev_idle_stop (EV_A_ idle); 2971 ev_idle_stop (EV_A_ idle);
… …
2629 if (expect_false (ev_is_active (w))) 2978 if (expect_false (ev_is_active (w)))
2630 return; 2979 return;
2631 2980
2632 { 2981 {
2633 struct ev_loop *loop = w->other; 2982 struct ev_loop *loop = w->other;
2634 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2983 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2635 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 2984 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2636 } 2985 }
2986
2987 EV_FREQUENT_CHECK;
2637 2988
2638 ev_set_priority (&w->io, ev_priority (w)); 2989 ev_set_priority (&w->io, ev_priority (w));
2639 ev_io_start (EV_A_ &w->io); 2990 ev_io_start (EV_A_ &w->io);
2640 2991
2641 ev_prepare_init (&w->prepare, embed_prepare_cb); 2992 ev_prepare_init (&w->prepare, embed_prepare_cb);
2642 ev_set_priority (&w->prepare, EV_MINPRI); 2993 ev_set_priority (&w->prepare, EV_MINPRI);
2643 ev_prepare_start (EV_A_ &w->prepare); 2994 ev_prepare_start (EV_A_ &w->prepare);
2644 2995
2996 ev_fork_init (&w->fork, embed_fork_cb);
2997 ev_fork_start (EV_A_ &w->fork);
2998
2645 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 2999 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2646 3000
2647 ev_start (EV_A_ (W)w, 1); 3001 ev_start (EV_A_ (W)w, 1);
3002
3003 EV_FREQUENT_CHECK;
2648} 3004}
2649 3005
2650void 3006void
2651ev_embed_stop (EV_P_ ev_embed *w) 3007ev_embed_stop (EV_P_ ev_embed *w)
2652{ 3008{
2653 clear_pending (EV_A_ (W)w); 3009 clear_pending (EV_A_ (W)w);
2654 if (expect_false (!ev_is_active (w))) 3010 if (expect_false (!ev_is_active (w)))
2655 return; 3011 return;
2656 3012
3013 EV_FREQUENT_CHECK;
3014
2657 ev_io_stop (EV_A_ &w->io); 3015 ev_io_stop (EV_A_ &w->io);
2658 ev_prepare_stop (EV_A_ &w->prepare); 3016 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork);
2659 3018
2660 ev_stop (EV_A_ (W)w); 3019 EV_FREQUENT_CHECK;
2661} 3020}
2662#endif 3021#endif
2663 3022
2664#if EV_FORK_ENABLE 3023#if EV_FORK_ENABLE
2665void 3024void
2666ev_fork_start (EV_P_ ev_fork *w) 3025ev_fork_start (EV_P_ ev_fork *w)
2667{ 3026{
2668 if (expect_false (ev_is_active (w))) 3027 if (expect_false (ev_is_active (w)))
2669 return; 3028 return;
3029
3030 EV_FREQUENT_CHECK;
2670 3031
2671 ev_start (EV_A_ (W)w, ++forkcnt); 3032 ev_start (EV_A_ (W)w, ++forkcnt);
2672 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3033 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2673 forks [forkcnt - 1] = w; 3034 forks [forkcnt - 1] = w;
3035
3036 EV_FREQUENT_CHECK;
2674} 3037}
2675 3038
2676void 3039void
2677ev_fork_stop (EV_P_ ev_fork *w) 3040ev_fork_stop (EV_P_ ev_fork *w)
2678{ 3041{
2679 clear_pending (EV_A_ (W)w); 3042 clear_pending (EV_A_ (W)w);
2680 if (expect_false (!ev_is_active (w))) 3043 if (expect_false (!ev_is_active (w)))
2681 return; 3044 return;
2682 3045
3046 EV_FREQUENT_CHECK;
3047
2683 { 3048 {
2684 int active = ev_active (w); 3049 int active = ev_active (w);
2685 3050
2686 forks [active - 1] = forks [--forkcnt]; 3051 forks [active - 1] = forks [--forkcnt];
2687 ev_active (forks [active - 1]) = active; 3052 ev_active (forks [active - 1]) = active;
2688 } 3053 }
2689 3054
2690 ev_stop (EV_A_ (W)w); 3055 ev_stop (EV_A_ (W)w);
3056
3057 EV_FREQUENT_CHECK;
2691} 3058}
2692#endif 3059#endif
2693 3060
2694#if EV_ASYNC_ENABLE 3061#if EV_ASYNC_ENABLE
2695void 3062void
… …
2697{ 3064{
2698 if (expect_false (ev_is_active (w))) 3065 if (expect_false (ev_is_active (w)))
2699 return; 3066 return;
2700 3067
2701 evpipe_init (EV_A); 3068 evpipe_init (EV_A);
3069
3070 EV_FREQUENT_CHECK;
2702 3071
2703 ev_start (EV_A_ (W)w, ++asynccnt); 3072 ev_start (EV_A_ (W)w, ++asynccnt);
2704 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3073 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2705 asyncs [asynccnt - 1] = w; 3074 asyncs [asynccnt - 1] = w;
3075
3076 EV_FREQUENT_CHECK;
2706} 3077}
2707 3078
2708void 3079void
2709ev_async_stop (EV_P_ ev_async *w) 3080ev_async_stop (EV_P_ ev_async *w)
2710{ 3081{
2711 clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
2713 return; 3084 return;
2714 3085
3086 EV_FREQUENT_CHECK;
3087
2715 { 3088 {
2716 int active = ev_active (w); 3089 int active = ev_active (w);
2717 3090
2718 asyncs [active - 1] = asyncs [--asynccnt]; 3091 asyncs [active - 1] = asyncs [--asynccnt];
2719 ev_active (asyncs [active - 1]) = active; 3092 ev_active (asyncs [active - 1]) = active;
2720 } 3093 }
2721 3094
2722 ev_stop (EV_A_ (W)w); 3095 ev_stop (EV_A_ (W)w);
3096
3097 EV_FREQUENT_CHECK;
2723} 3098}
2724 3099
2725void 3100void
2726ev_async_send (EV_P_ ev_async *w) 3101ev_async_send (EV_P_ ev_async *w)
2727{ 3102{
… …
2744once_cb (EV_P_ struct ev_once *once, int revents) 3119once_cb (EV_P_ struct ev_once *once, int revents)
2745{ 3120{
2746 void (*cb)(int revents, void *arg) = once->cb; 3121 void (*cb)(int revents, void *arg) = once->cb;
2747 void *arg = once->arg; 3122 void *arg = once->arg;
2748 3123
2749 ev_io_stop (EV_A_ &once->io); 3124 ev_io_stop (EV_A_ &once->io);
2750 ev_timer_stop (EV_A_ &once->to); 3125 ev_timer_stop (EV_A_ &once->to);
2751 ev_free (once); 3126 ev_free (once);
2752 3127
2753 cb (revents, arg); 3128 cb (revents, arg);
2754} 3129}
2755 3130
2756static void 3131static void
2757once_cb_io (EV_P_ ev_io *w, int revents) 3132once_cb_io (EV_P_ ev_io *w, int revents)
2758{ 3133{
2759 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3134 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3135
3136 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2760} 3137}
2761 3138
2762static void 3139static void
2763once_cb_to (EV_P_ ev_timer *w, int revents) 3140once_cb_to (EV_P_ ev_timer *w, int revents)
2764{ 3141{
2765 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3142 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3143
3144 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2766} 3145}
2767 3146
2768void 3147void
2769ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3148ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2770{ 3149{
… …
2792 ev_timer_set (&once->to, timeout, 0.); 3171 ev_timer_set (&once->to, timeout, 0.);
2793 ev_timer_start (EV_A_ &once->to); 3172 ev_timer_start (EV_A_ &once->to);
2794 } 3173 }
2795} 3174}
2796 3175
3176/*****************************************************************************/
3177
3178#if 0
3179void
3180ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3181{
3182 int i, j;
3183 ev_watcher_list *wl, *wn;
3184
3185 if (types & (EV_IO | EV_EMBED))
3186 for (i = 0; i < anfdmax; ++i)
3187 for (wl = anfds [i].head; wl; )
3188 {
3189 wn = wl->next;
3190
3191#if EV_EMBED_ENABLE
3192 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3193 {
3194 if (types & EV_EMBED)
3195 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3196 }
3197 else
3198#endif
3199#if EV_USE_INOTIFY
3200 if (ev_cb ((ev_io *)wl) == infy_cb)
3201 ;
3202 else
3203#endif
3204 if ((ev_io *)wl != &pipeev)
3205 if (types & EV_IO)
3206 cb (EV_A_ EV_IO, wl);
3207
3208 wl = wn;
3209 }
3210
3211 if (types & (EV_TIMER | EV_STAT))
3212 for (i = timercnt + HEAP0; i-- > HEAP0; )
3213#if EV_STAT_ENABLE
3214 /*TODO: timer is not always active*/
3215 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3216 {
3217 if (types & EV_STAT)
3218 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3219 }
3220 else
3221#endif
3222 if (types & EV_TIMER)
3223 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3224
3225#if EV_PERIODIC_ENABLE
3226 if (types & EV_PERIODIC)
3227 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3228 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3229#endif
3230
3231#if EV_IDLE_ENABLE
3232 if (types & EV_IDLE)
3233 for (j = NUMPRI; i--; )
3234 for (i = idlecnt [j]; i--; )
3235 cb (EV_A_ EV_IDLE, idles [j][i]);
3236#endif
3237
3238#if EV_FORK_ENABLE
3239 if (types & EV_FORK)
3240 for (i = forkcnt; i--; )
3241 if (ev_cb (forks [i]) != embed_fork_cb)
3242 cb (EV_A_ EV_FORK, forks [i]);
3243#endif
3244
3245#if EV_ASYNC_ENABLE
3246 if (types & EV_ASYNC)
3247 for (i = asynccnt; i--; )
3248 cb (EV_A_ EV_ASYNC, asyncs [i]);
3249#endif
3250
3251 if (types & EV_PREPARE)
3252 for (i = preparecnt; i--; )
3253#if EV_EMBED_ENABLE
3254 if (ev_cb (prepares [i]) != embed_prepare_cb)
3255#endif
3256 cb (EV_A_ EV_PREPARE, prepares [i]);
3257
3258 if (types & EV_CHECK)
3259 for (i = checkcnt; i--; )
3260 cb (EV_A_ EV_CHECK, checks [i]);
3261
3262 if (types & EV_SIGNAL)
3263 for (i = 0; i < signalmax; ++i)
3264 for (wl = signals [i].head; wl; )
3265 {
3266 wn = wl->next;
3267 cb (EV_A_ EV_SIGNAL, wl);
3268 wl = wn;
3269 }
3270
3271 if (types & EV_CHILD)
3272 for (i = EV_PID_HASHSIZE; i--; )
3273 for (wl = childs [i]; wl; )
3274 {
3275 wn = wl->next;
3276 cb (EV_A_ EV_CHILD, wl);
3277 wl = wn;
3278 }
3279/* EV_STAT 0x00001000 /* stat data changed */
3280/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3281}
3282#endif
3283
2797#if EV_MULTIPLICITY 3284#if EV_MULTIPLICITY
2798 #include "ev_wrap.h" 3285 #include "ev_wrap.h"
2799#endif 3286#endif
2800 3287
2801#ifdef __cplusplus 3288#ifdef __cplusplus

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