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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.285 by root, Wed Apr 15 19:35:53 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
… …
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#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 889#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 890#define UPHEAP_DONE(p,k) ((p) == (k))
809/* towards the root */
810void inline_speed
811upheap (ANHE *heap, int k)
812{
813 ANHE he = heap [k];
814
815 for (;;)
816 {
817 int p = HPARENT (k);
818
819 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820 break;
821
822 heap [k] = heap [p];
823 ev_active (ANHE_w (heap [k])) = k;
824 k = p;
825 }
826
827 heap [k] = he;
828 ev_active (ANHE_w (he)) = k;
829}
830 891
831/* away from the root */ 892/* away from the root */
832void inline_speed 893inline_speed void
833downheap (ANHE *heap, int N, int k) 894downheap (ANHE *heap, int N, int k)
834{ 895{
835 ANHE he = heap [k]; 896 ANHE he = heap [k];
836 ANHE *E = heap + N + HEAP0; 897 ANHE *E = heap + N + HEAP0;
837 898
838 for (;;) 899 for (;;)
839 { 900 {
840 ev_tstamp minat; 901 ev_tstamp minat;
841 ANHE *minpos; 902 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 903 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 904
844 // find minimum child 905 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 906 if (expect_true (pos + DHEAP - 1 < E))
846 { 907 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 908 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 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));
849 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));
… …
870 931
871 heap [k] = he; 932 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 933 ev_active (ANHE_w (he)) = k;
873} 934}
874 935
875#else // 4HEAP 936#else /* 4HEAP */
876 937
877#define HEAP0 1 938#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 939#define HPARENT(k) ((k) >> 1)
940#define UPHEAP_DONE(p,k) (!(p))
879 941
880/* towards the root */ 942/* away from the root */
881void inline_speed 943inline_speed void
882upheap (ANHE *heap, int k) 944downheap (ANHE *heap, int N, int k)
883{ 945{
884 ANHE he = heap [k]; 946 ANHE he = heap [k];
885 947
886 for (;;) 948 for (;;)
887 { 949 {
888 int p = HPARENT (k); 950 int c = k << 1;
889 951
890 /* maybe we could use a dummy element at heap [0]? */ 952 if (c > N + HEAP0 - 1)
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break; 953 break;
893 954
894 heap [k] = heap [p];
895 ev_active (ANHE_w (heap [k])) = k;
896 k = p;
897 }
898
899 heap [k] = he;
900 ev_active (ANHE_w (heap [k])) = k;
901}
902
903/* away from the root */
904void inline_speed
905downheap (ANHE *heap, int N, int k)
906{
907 ANHE he = heap [k];
908
909 for (;;)
910 {
911 int c = k << 1;
912
913 if (c > N)
914 break;
915
916 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])
917 ? 1 : 0; 956 ? 1 : 0;
918 957
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 958 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 959 break;
921 960
… …
928 heap [k] = he; 967 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 968 ev_active (ANHE_w (he)) = k;
930} 969}
931#endif 970#endif
932 971
933void 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
934adjustheap (ANHE *heap, int N, int k) 995adjustheap (ANHE *heap, int N, int k)
935{ 996{
936 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]))
937 upheap (heap, k); 998 upheap (heap, k);
938 else 999 else
939 downheap (heap, N, k); 1000 downheap (heap, N, k);
940} 1001}
941 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);
1013}
1014
942/*****************************************************************************/ 1015/*****************************************************************************/
943 1016
944typedef struct 1017typedef struct
945{ 1018{
946 WL head; 1019 WL head;
… …
950static ANSIG *signals; 1023static ANSIG *signals;
951static int signalmax; 1024static int signalmax;
952 1025
953static EV_ATOMIC_T gotsig; 1026static EV_ATOMIC_T gotsig;
954 1027
955void inline_size
956signals_init (ANSIG *base, int count)
957{
958 while (count--)
959 {
960 base->head = 0;
961 base->gotsig = 0;
962
963 ++base;
964 }
965}
966
967/*****************************************************************************/ 1028/*****************************************************************************/
968 1029
969void inline_speed 1030inline_speed void
970fd_intern (int fd) 1031fd_intern (int fd)
971{ 1032{
972#ifdef _WIN32 1033#ifdef _WIN32
973 int arg = 1; 1034 unsigned long arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else 1036#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC); 1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK); 1038 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif 1039#endif
… …
992 } 1053 }
993 else 1054 else
994#endif 1055#endif
995 { 1056 {
996 while (pipe (evpipe)) 1057 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1058 ev_syserr ("(libev) error creating signal/async pipe");
998 1059
999 fd_intern (evpipe [0]); 1060 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1061 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1062 ev_io_set (&pipeev, evpipe [0], EV_READ);
1002 } 1063 }
… …
1004 ev_io_start (EV_A_ &pipeev); 1065 ev_io_start (EV_A_ &pipeev);
1005 ev_unref (EV_A); /* watcher should not keep loop alive */ 1066 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 } 1067 }
1007} 1068}
1008 1069
1009void inline_size 1070inline_size void
1010evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011{ 1072{
1012 if (!*flag) 1073 if (!*flag)
1013 { 1074 {
1014 int old_errno = errno; /* save errno because write might clobber it */ 1075 int old_errno = errno; /* save errno because write might clobber it */
… …
1092ev_feed_signal_event (EV_P_ int signum) 1153ev_feed_signal_event (EV_P_ int signum)
1093{ 1154{
1094 WL w; 1155 WL w;
1095 1156
1096#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
1097 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));
1098#endif 1159#endif
1099 1160
1100 --signum; 1161 --signum;
1101 1162
1102 if (signum < 0 || signum >= signalmax) 1163 if (signum < 0 || signum >= signalmax)
… …
1118 1179
1119#ifndef WIFCONTINUED 1180#ifndef WIFCONTINUED
1120# define WIFCONTINUED(status) 0 1181# define WIFCONTINUED(status) 0
1121#endif 1182#endif
1122 1183
1123void inline_speed 1184inline_speed void
1124child_reap (EV_P_ int chain, int pid, int status) 1185child_reap (EV_P_ int chain, int pid, int status)
1125{ 1186{
1126 ev_child *w; 1187 ev_child *w;
1127 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128 1189
… …
1231 /* kqueue is borked on everything but netbsd apparently */ 1292 /* kqueue is borked on everything but netbsd apparently */
1232 /* 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 */
1233 flags &= ~EVBACKEND_KQUEUE; 1294 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1295#endif
1235#ifdef __APPLE__ 1296#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1297 /* only select works correctly on that "unix-certified" platform */
1237 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 */
1238#endif 1300#endif
1239 1301
1240 return flags; 1302 return flags;
1241} 1303}
1242 1304
… …
1279static void noinline 1341static void noinline
1280loop_init (EV_P_ unsigned int flags) 1342loop_init (EV_P_ unsigned int flags)
1281{ 1343{
1282 if (!backend) 1344 if (!backend)
1283 { 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
1284#if EV_USE_MONOTONIC 1356#if EV_USE_MONOTONIC
1357 if (!have_monotonic)
1285 { 1358 {
1286 struct timespec ts; 1359 struct timespec ts;
1360
1287 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288 have_monotonic = 1; 1362 have_monotonic = 1;
1289 } 1363 }
1290#endif 1364#endif
1291 1365
1292 ev_rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1293 mn_now = get_clock (); 1367 mn_now = get_clock ();
1294 now_floor = mn_now; 1368 now_floor = mn_now;
… …
1393 } 1467 }
1394 1468
1395 ev_free (anfds); anfdmax = 0; 1469 ev_free (anfds); anfdmax = 0;
1396 1470
1397 /* 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);
1398 array_free (fdchange, EMPTY); 1473 array_free (fdchange, EMPTY);
1399 array_free (timer, EMPTY); 1474 array_free (timer, EMPTY);
1400#if EV_PERIODIC_ENABLE 1475#if EV_PERIODIC_ENABLE
1401 array_free (periodic, EMPTY); 1476 array_free (periodic, EMPTY);
1402#endif 1477#endif
… …
1411 1486
1412 backend = 0; 1487 backend = 0;
1413} 1488}
1414 1489
1415#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1416void inline_size infy_fork (EV_P); 1491inline_size void infy_fork (EV_P);
1417#endif 1492#endif
1418 1493
1419void inline_size 1494inline_size void
1420loop_fork (EV_P) 1495loop_fork (EV_P)
1421{ 1496{
1422#if EV_USE_PORT 1497#if EV_USE_PORT
1423 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424#endif 1499#endif
… …
1462 1537
1463 postfork = 0; 1538 postfork = 0;
1464} 1539}
1465 1540
1466#if EV_MULTIPLICITY 1541#if EV_MULTIPLICITY
1542
1467struct ev_loop * 1543struct ev_loop *
1468ev_loop_new (unsigned int flags) 1544ev_loop_new (unsigned int flags)
1469{ 1545{
1470 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));
1471 1547
… …
1489void 1565void
1490ev_loop_fork (EV_P) 1566ev_loop_fork (EV_P)
1491{ 1567{
1492 postfork = 1; /* must be in line with ev_default_fork */ 1568 postfork = 1; /* must be in line with ev_default_fork */
1493} 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)
1494#endif 1666# endif
1667#endif
1668}
1669
1670#endif /* multiplicity */
1495 1671
1496#if EV_MULTIPLICITY 1672#if EV_MULTIPLICITY
1497struct ev_loop * 1673struct ev_loop *
1498ev_default_loop_init (unsigned int flags) 1674ev_default_loop_init (unsigned int flags)
1499#else 1675#else
… …
1532{ 1708{
1533#if EV_MULTIPLICITY 1709#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr; 1710 struct ev_loop *loop = ev_default_loop_ptr;
1535#endif 1711#endif
1536 1712
1713 ev_default_loop_ptr = 0;
1714
1537#ifndef _WIN32 1715#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */ 1716 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev); 1717 ev_signal_stop (EV_A_ &childev);
1540#endif 1718#endif
1541 1719
… …
1547{ 1725{
1548#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr; 1727 struct ev_loop *loop = ev_default_loop_ptr;
1550#endif 1728#endif
1551 1729
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 1730 postfork = 1; /* must be in line with ev_loop_fork */
1554} 1731}
1555 1732
1556/*****************************************************************************/ 1733/*****************************************************************************/
1557 1734
1558void 1735void
1559ev_invoke (EV_P_ void *w, int revents) 1736ev_invoke (EV_P_ void *w, int revents)
1560{ 1737{
1561 EV_CB_INVOKE ((W)w, revents); 1738 EV_CB_INVOKE ((W)w, revents);
1562} 1739}
1563 1740
1564void inline_speed 1741inline_speed void
1565call_pending (EV_P) 1742call_pending (EV_P)
1566{ 1743{
1567 int pri; 1744 int pri;
1568 1745
1569 for (pri = NUMPRI; pri--; ) 1746 for (pri = NUMPRI; pri--; )
… …
1571 { 1748 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 1750
1574 if (expect_true (p->w)) 1751 if (expect_true (p->w))
1575 { 1752 {
1576 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1577 1754
1578 p->w->pending = 0; 1755 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 1756 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK;
1580 } 1758 }
1581 } 1759 }
1582} 1760}
1583 1761
1584#if EV_IDLE_ENABLE 1762#if EV_IDLE_ENABLE
1585void inline_size 1763inline_size void
1586idle_reify (EV_P) 1764idle_reify (EV_P)
1587{ 1765{
1588 if (expect_false (idleall)) 1766 if (expect_false (idleall))
1589 { 1767 {
1590 int pri; 1768 int pri;
… …
1602 } 1780 }
1603 } 1781 }
1604} 1782}
1605#endif 1783#endif
1606 1784
1607void inline_size 1785inline_size void
1608timers_reify (EV_P) 1786timers_reify (EV_P)
1609{ 1787{
1788 EV_FREQUENT_CHECK;
1789
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1790 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 1791 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1792 do
1613
1614 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616 /* first reschedule or stop timer */
1617 if (w->repeat)
1618 { 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 {
1619 ev_at (w) += w->repeat; 1801 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 1802 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 1803 ev_at (w) = mn_now;
1622 1804
1623 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.));
1624 1806
1625 ANHE_at_set (timers [HEAP0]); 1807 ANHE_at_cache (timers [HEAP0]);
1626 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);
1627 } 1815 }
1628 else 1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 1817
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1818 feed_reverse_done (EV_A_ EV_TIMEOUT);
1632 } 1819 }
1633} 1820}
1634 1821
1635#if EV_PERIODIC_ENABLE 1822#if EV_PERIODIC_ENABLE
1636void inline_size 1823inline_size void
1637periodics_reify (EV_P) 1824periodics_reify (EV_P)
1638{ 1825{
1826 EV_FREQUENT_CHECK;
1827
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 1829 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1830 int feed_count = 0;
1642 1831
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1832 do
1644
1645 /* first reschedule or stop timer */
1646 if (w->reschedule_cb)
1647 { 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 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 1842
1650 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));
1651 1844
1652 ANHE_at_set (periodics [HEAP0]); 1845 ANHE_at_cache (periodics [HEAP0]);
1653 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);
1654 } 1872 }
1655 else if (w->interval) 1873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656 {
1657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658 /* if next trigger time is not sufficiently in the future, put it there */
1659 /* this might happen because of floating point inexactness */
1660 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661 {
1662 ev_at (w) += w->interval;
1663 1874
1664 /* if interval is unreasonably low we might still have a time in the past */
1665 /* so correct this. this will make the periodic very inexact, but the user */
1666 /* has effectively asked to get triggered more often than possible */
1667 if (ev_at (w) < ev_rt_now)
1668 ev_at (w) = ev_rt_now;
1669 }
1670
1671 ANHE_at_set (periodics [HEAP0]);
1672 downheap (periodics, periodiccnt, HEAP0);
1673 }
1674 else
1675 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1875 feed_reverse_done (EV_A_ EV_PERIODIC);
1678 } 1876 }
1679} 1877}
1680 1878
1681static void noinline 1879static void noinline
1682periodics_reschedule (EV_P) 1880periodics_reschedule (EV_P)
… …
1691 if (w->reschedule_cb) 1889 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 1891 else if (w->interval)
1694 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;
1695 1893
1696 ANHE_at_set (periodics [i]); 1894 ANHE_at_cache (periodics [i]);
1697 } 1895 }
1698 1896
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 1897 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 1898}
1899#endif
1900
1901static void noinline
1902timers_reschedule (EV_P_ ev_tstamp adjust)
1903{
1904 int i;
1905
1701 for (i = 0; i < periodiccnt; ++i) 1906 for (i = 0; i < timercnt; ++i)
1702 upheap (periodics, i + HEAP0); 1907 {
1908 ANHE *he = timers + i + HEAP0;
1909 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he);
1911 }
1703} 1912}
1704#endif
1705 1913
1706void inline_speed 1914inline_speed void
1707time_update (EV_P_ ev_tstamp max_block) 1915time_update (EV_P_ ev_tstamp max_block)
1708{ 1916{
1709 int i; 1917 int i;
1710 1918
1711#if EV_USE_MONOTONIC 1919#if EV_USE_MONOTONIC
… …
1744 ev_rt_now = ev_time (); 1952 ev_rt_now = ev_time ();
1745 mn_now = get_clock (); 1953 mn_now = get_clock ();
1746 now_floor = mn_now; 1954 now_floor = mn_now;
1747 } 1955 }
1748 1956
1957 /* no timer adjustment, as the monotonic clock doesn't jump */
1958 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749# if EV_PERIODIC_ENABLE 1959# if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 1960 periodics_reschedule (EV_A);
1751# endif 1961# endif
1752 /* no timer adjustment, as the monotonic clock doesn't jump */
1753 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754 } 1962 }
1755 else 1963 else
1756#endif 1964#endif
1757 { 1965 {
1758 ev_rt_now = ev_time (); 1966 ev_rt_now = ev_time ();
1759 1967
1760 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))
1761 { 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);
1762#if EV_PERIODIC_ENABLE 1972#if EV_PERIODIC_ENABLE
1763 periodics_reschedule (EV_A); 1973 periodics_reschedule (EV_A);
1764#endif 1974#endif
1765 /* adjust timers. this is easy, as the offset is the same for all of them */
1766 for (i = 0; i < timercnt; ++i)
1767 {
1768 ANHE *he = timers + i + HEAP0;
1769 ANHE_w (*he)->at += ev_rt_now - mn_now;
1770 ANHE_at_set (*he);
1771 }
1772 } 1975 }
1773 1976
1774 mn_now = ev_rt_now; 1977 mn_now = ev_rt_now;
1775 } 1978 }
1776} 1979}
1777 1980
1778void
1779ev_ref (EV_P)
1780{
1781 ++activecnt;
1782}
1783
1784void
1785ev_unref (EV_P)
1786{
1787 --activecnt;
1788}
1789
1790static int loop_done; 1981static int loop_done;
1791 1982
1792void 1983void
1793ev_loop (EV_P_ int flags) 1984ev_loop (EV_P_ int flags)
1794{ 1985{
… …
1796 1987
1797 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1798 1989
1799 do 1990 do
1800 { 1991 {
1992#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A);
1994#endif
1995
1801#ifndef _WIN32 1996#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 1997 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 1998 if (expect_false (getpid () != curpid))
1804 { 1999 {
1805 curpid = getpid (); 2000 curpid = getpid ();
… …
1822 { 2017 {
1823 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824 call_pending (EV_A); 2019 call_pending (EV_A);
1825 } 2020 }
1826 2021
1827 if (expect_false (!activecnt))
1828 break;
1829
1830 /* we might have forked, so reify kernel state if necessary */ 2022 /* we might have forked, so reify kernel state if necessary */
1831 if (expect_false (postfork)) 2023 if (expect_false (postfork))
1832 loop_fork (EV_A); 2024 loop_fork (EV_A);
1833 2025
1834 /* update fd-related kernel structures */ 2026 /* update fd-related kernel structures */
… …
1841 2033
1842 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1843 { 2035 {
1844 /* update time to cancel out callback processing overhead */ 2036 /* update time to cancel out callback processing overhead */
1845 time_update (EV_A_ 1e100); 2037 time_update (EV_A_ 1e100);
1846
1847 waittime = MAX_BLOCKTIME;
1848 2038
1849 if (timercnt) 2039 if (timercnt)
1850 { 2040 {
1851 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1852 if (waittime > to) waittime = to; 2042 if (waittime > to) waittime = to;
… …
1913ev_unloop (EV_P_ int how) 2103ev_unloop (EV_P_ int how)
1914{ 2104{
1915 loop_done = how; 2105 loop_done = how;
1916} 2106}
1917 2107
2108void
2109ev_ref (EV_P)
2110{
2111 ++activecnt;
2112}
2113
2114void
2115ev_unref (EV_P)
2116{
2117 --activecnt;
2118}
2119
2120void
2121ev_now_update (EV_P)
2122{
2123 time_update (EV_A_ 1e100);
2124}
2125
2126void
2127ev_suspend (EV_P)
2128{
2129 ev_now_update (EV_A);
2130}
2131
2132void
2133ev_resume (EV_P)
2134{
2135 ev_tstamp mn_prev = mn_now;
2136
2137 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev);
2140 periodics_reschedule (EV_A);
2141}
2142
1918/*****************************************************************************/ 2143/*****************************************************************************/
1919 2144
1920void inline_size 2145inline_size void
1921wlist_add (WL *head, WL elem) 2146wlist_add (WL *head, WL elem)
1922{ 2147{
1923 elem->next = *head; 2148 elem->next = *head;
1924 *head = elem; 2149 *head = elem;
1925} 2150}
1926 2151
1927void inline_size 2152inline_size void
1928wlist_del (WL *head, WL elem) 2153wlist_del (WL *head, WL elem)
1929{ 2154{
1930 while (*head) 2155 while (*head)
1931 { 2156 {
1932 if (*head == elem) 2157 if (*head == elem)
… …
1937 2162
1938 head = &(*head)->next; 2163 head = &(*head)->next;
1939 } 2164 }
1940} 2165}
1941 2166
1942void inline_speed 2167inline_speed void
1943clear_pending (EV_P_ W w) 2168clear_pending (EV_P_ W w)
1944{ 2169{
1945 if (w->pending) 2170 if (w->pending)
1946 { 2171 {
1947 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2172 pendings [ABSPRI (w)][w->pending - 1].w = 0;
… …
1964 } 2189 }
1965 else 2190 else
1966 return 0; 2191 return 0;
1967} 2192}
1968 2193
1969void inline_size 2194inline_size void
1970pri_adjust (EV_P_ W w) 2195pri_adjust (EV_P_ W w)
1971{ 2196{
1972 int pri = w->priority; 2197 int pri = w->priority;
1973 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975 w->priority = pri; 2200 w->priority = pri;
1976} 2201}
1977 2202
1978void inline_speed 2203inline_speed void
1979ev_start (EV_P_ W w, int active) 2204ev_start (EV_P_ W w, int active)
1980{ 2205{
1981 pri_adjust (EV_A_ w); 2206 pri_adjust (EV_A_ w);
1982 w->active = active; 2207 w->active = active;
1983 ev_ref (EV_A); 2208 ev_ref (EV_A);
1984} 2209}
1985 2210
1986void inline_size 2211inline_size void
1987ev_stop (EV_P_ W w) 2212ev_stop (EV_P_ W w)
1988{ 2213{
1989 ev_unref (EV_A); 2214 ev_unref (EV_A);
1990 w->active = 0; 2215 w->active = 0;
1991} 2216}
… …
1998 int fd = w->fd; 2223 int fd = w->fd;
1999 2224
2000 if (expect_false (ev_is_active (w))) 2225 if (expect_false (ev_is_active (w)))
2001 return; 2226 return;
2002 2227
2003 assert (("ev_io_start called with negative fd", fd >= 0)); 2228 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230
2231 EV_FREQUENT_CHECK;
2004 2232
2005 ev_start (EV_A_ (W)w, 1); 2233 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2235 wlist_add (&anfds[fd].head, (WL)w);
2008 2236
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2010 w->events &= ~EV_IOFDSET; 2238 w->events &= ~EV__IOFDSET;
2239
2240 EV_FREQUENT_CHECK;
2011} 2241}
2012 2242
2013void noinline 2243void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2244ev_io_stop (EV_P_ ev_io *w)
2015{ 2245{
2016 clear_pending (EV_A_ (W)w); 2246 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2247 if (expect_false (!ev_is_active (w)))
2018 return; 2248 return;
2019 2249
2020 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2250 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2251
2252 EV_FREQUENT_CHECK;
2021 2253
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2254 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2255 ev_stop (EV_A_ (W)w);
2024 2256
2025 fd_change (EV_A_ w->fd, 1); 2257 fd_change (EV_A_ w->fd, 1);
2258
2259 EV_FREQUENT_CHECK;
2026} 2260}
2027 2261
2028void noinline 2262void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2263ev_timer_start (EV_P_ ev_timer *w)
2030{ 2264{
2031 if (expect_false (ev_is_active (w))) 2265 if (expect_false (ev_is_active (w)))
2032 return; 2266 return;
2033 2267
2034 ev_at (w) += mn_now; 2268 ev_at (w) += mn_now;
2035 2269
2036 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2270 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037 2271
2272 EV_FREQUENT_CHECK;
2273
2274 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2275 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2276 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2277 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2278 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2279 upheap (timers, ev_active (w));
2043 2280
2281 EV_FREQUENT_CHECK;
2282
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2283 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2284}
2046 2285
2047void noinline 2286void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2287ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2288{
2050 clear_pending (EV_A_ (W)w); 2289 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2290 if (expect_false (!ev_is_active (w)))
2052 return; 2291 return;
2053 2292
2293 EV_FREQUENT_CHECK;
2294
2054 { 2295 {
2055 int active = ev_active (w); 2296 int active = ev_active (w);
2056 2297
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2298 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2299
2300 --timercnt;
2301
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2302 if (expect_true (active < timercnt + HEAP0))
2060 { 2303 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2304 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2305 adjustheap (timers, timercnt, active);
2063 } 2306 }
2064
2065 --timercnt;
2066 } 2307 }
2308
2309 EV_FREQUENT_CHECK;
2067 2310
2068 ev_at (w) -= mn_now; 2311 ev_at (w) -= mn_now;
2069 2312
2070 ev_stop (EV_A_ (W)w); 2313 ev_stop (EV_A_ (W)w);
2071} 2314}
2072 2315
2073void noinline 2316void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2317ev_timer_again (EV_P_ ev_timer *w)
2075{ 2318{
2319 EV_FREQUENT_CHECK;
2320
2076 if (ev_is_active (w)) 2321 if (ev_is_active (w))
2077 { 2322 {
2078 if (w->repeat) 2323 if (w->repeat)
2079 { 2324 {
2080 ev_at (w) = mn_now + w->repeat; 2325 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2326 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2327 adjustheap (timers, timercnt, ev_active (w));
2083 } 2328 }
2084 else 2329 else
2085 ev_timer_stop (EV_A_ w); 2330 ev_timer_stop (EV_A_ w);
2086 } 2331 }
2087 else if (w->repeat) 2332 else if (w->repeat)
2088 { 2333 {
2089 ev_at (w) = w->repeat; 2334 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2335 ev_timer_start (EV_A_ w);
2091 } 2336 }
2337
2338 EV_FREQUENT_CHECK;
2092} 2339}
2093 2340
2094#if EV_PERIODIC_ENABLE 2341#if EV_PERIODIC_ENABLE
2095void noinline 2342void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2343ev_periodic_start (EV_P_ ev_periodic *w)
… …
2100 2347
2101 if (w->reschedule_cb) 2348 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2350 else if (w->interval)
2104 { 2351 {
2105 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2106 /* this formula differs from the one in periodic_reify because we do not always round up */ 2353 /* this formula differs from the one in periodic_reify because we do not always round up */
2107 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108 } 2355 }
2109 else 2356 else
2110 ev_at (w) = w->offset; 2357 ev_at (w) = w->offset;
2111 2358
2359 EV_FREQUENT_CHECK;
2360
2361 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2362 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2363 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2364 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2365 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2366 upheap (periodics, ev_active (w));
2117 2367
2368 EV_FREQUENT_CHECK;
2369
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2370 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2371}
2120 2372
2121void noinline 2373void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2374ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2375{
2124 clear_pending (EV_A_ (W)w); 2376 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2377 if (expect_false (!ev_is_active (w)))
2126 return; 2378 return;
2127 2379
2380 EV_FREQUENT_CHECK;
2381
2128 { 2382 {
2129 int active = ev_active (w); 2383 int active = ev_active (w);
2130 2384
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2385 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2386
2387 --periodiccnt;
2388
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2389 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2390 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2391 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2392 adjustheap (periodics, periodiccnt, active);
2137 } 2393 }
2138
2139 --periodiccnt;
2140 } 2394 }
2395
2396 EV_FREQUENT_CHECK;
2141 2397
2142 ev_stop (EV_A_ (W)w); 2398 ev_stop (EV_A_ (W)w);
2143} 2399}
2144 2400
2145void noinline 2401void noinline
… …
2157 2413
2158void noinline 2414void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2415ev_signal_start (EV_P_ ev_signal *w)
2160{ 2416{
2161#if EV_MULTIPLICITY 2417#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif 2419#endif
2164 if (expect_false (ev_is_active (w))) 2420 if (expect_false (ev_is_active (w)))
2165 return; 2421 return;
2166 2422
2167 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2168 2424
2169 evpipe_init (EV_A); 2425 evpipe_init (EV_A);
2426
2427 EV_FREQUENT_CHECK;
2170 2428
2171 { 2429 {
2172#ifndef _WIN32 2430#ifndef _WIN32
2173 sigset_t full, prev; 2431 sigset_t full, prev;
2174 sigfillset (&full); 2432 sigfillset (&full);
2175 sigprocmask (SIG_SETMASK, &full, &prev); 2433 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif 2434#endif
2177 2435
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179 2437
2180#ifndef _WIN32 2438#ifndef _WIN32
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2439 sigprocmask (SIG_SETMASK, &prev, 0);
2182#endif 2440#endif
2183 } 2441 }
… …
2195 sigfillset (&sa.sa_mask); 2453 sigfillset (&sa.sa_mask);
2196 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197 sigaction (w->signum, &sa, 0); 2455 sigaction (w->signum, &sa, 0);
2198#endif 2456#endif
2199 } 2457 }
2458
2459 EV_FREQUENT_CHECK;
2200} 2460}
2201 2461
2202void noinline 2462void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2463ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2464{
2205 clear_pending (EV_A_ (W)w); 2465 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2466 if (expect_false (!ev_is_active (w)))
2207 return; 2467 return;
2208 2468
2469 EV_FREQUENT_CHECK;
2470
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2471 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2472 ev_stop (EV_A_ (W)w);
2211 2473
2212 if (!signals [w->signum - 1].head) 2474 if (!signals [w->signum - 1].head)
2213 signal (w->signum, SIG_DFL); 2475 signal (w->signum, SIG_DFL);
2476
2477 EV_FREQUENT_CHECK;
2214} 2478}
2215 2479
2216void 2480void
2217ev_child_start (EV_P_ ev_child *w) 2481ev_child_start (EV_P_ ev_child *w)
2218{ 2482{
2219#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
2220 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2484 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221#endif 2485#endif
2222 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
2223 return; 2487 return;
2224 2488
2489 EV_FREQUENT_CHECK;
2490
2225 ev_start (EV_A_ (W)w, 1); 2491 ev_start (EV_A_ (W)w, 1);
2226 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2493
2494 EV_FREQUENT_CHECK;
2227} 2495}
2228 2496
2229void 2497void
2230ev_child_stop (EV_P_ ev_child *w) 2498ev_child_stop (EV_P_ ev_child *w)
2231{ 2499{
2232 clear_pending (EV_A_ (W)w); 2500 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 2501 if (expect_false (!ev_is_active (w)))
2234 return; 2502 return;
2235 2503
2504 EV_FREQUENT_CHECK;
2505
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 2507 ev_stop (EV_A_ (W)w);
2508
2509 EV_FREQUENT_CHECK;
2238} 2510}
2239 2511
2240#if EV_STAT_ENABLE 2512#if EV_STAT_ENABLE
2241 2513
2242# ifdef _WIN32 2514# ifdef _WIN32
2243# undef lstat 2515# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 2516# define lstat(a,b) _stati64 (a,b)
2245# endif 2517# endif
2246 2518
2247#define DEF_STAT_INTERVAL 5.0074891 2519#define DEF_STAT_INTERVAL 5.0074891
2520#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248#define MIN_STAT_INTERVAL 0.1074891 2521#define MIN_STAT_INTERVAL 0.1074891
2249 2522
2250static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251 2524
2252#if EV_USE_INOTIFY 2525#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 2526# define EV_INOTIFY_BUFSIZE 8192
… …
2257{ 2530{
2258 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); 2531 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);
2259 2532
2260 if (w->wd < 0) 2533 if (w->wd < 0)
2261 { 2534 {
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263 2537
2264 /* monitor some parent directory for speedup hints */ 2538 /* monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 2540 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 2542 {
2269 char path [4096]; 2543 char path [4096];
2270 strcpy (path, w->path); 2544 strcpy (path, w->path);
… …
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2548 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2549 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 2550
2277 char *pend = strrchr (path, '/'); 2551 char *pend = strrchr (path, '/');
2278 2552
2279 if (!pend) 2553 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 2554 break;
2281 2555
2282 *pend = 0; 2556 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 2557 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 2558 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 2560 }
2287 } 2561 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 2562
2291 if (w->wd >= 0) 2563 if (w->wd >= 0)
2564 {
2292 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2566
2567 /* now local changes will be tracked by inotify, but remote changes won't */
2568 /* unless the filesystem it known to be local, we therefore still poll */
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer);
2583 }
2293} 2584}
2294 2585
2295static void noinline 2586static void noinline
2296infy_del (EV_P_ ev_stat *w) 2587infy_del (EV_P_ ev_stat *w)
2297{ 2588{
… …
2311 2602
2312static void noinline 2603static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 2605{
2315 if (slot < 0) 2606 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 2607 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 2609 infy_wd (EV_A_ slot, wd, ev);
2319 else 2610 else
2320 { 2611 {
2321 WL w_; 2612 WL w_;
… …
2327 2618
2328 if (w->wd == wd || wd == -1) 2619 if (w->wd == wd || wd == -1)
2329 { 2620 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 2622 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332 w->wd = -1; 2624 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2625 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 2626 }
2335 2627
2336 stat_timer_cb (EV_A_ &w->timer, 0); 2628 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2349 2641
2350 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2643 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352} 2644}
2353 2645
2354void inline_size 2646inline_size void
2647check_2625 (EV_P)
2648{
2649 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */
2652 struct utsname buf;
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return;
2657
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1;
2667}
2668
2669inline_size void
2355infy_init (EV_P) 2670infy_init (EV_P)
2356{ 2671{
2357 if (fs_fd != -2) 2672 if (fs_fd != -2)
2358 return; 2673 return;
2674
2675 fs_fd = -1;
2676
2677 check_2625 (EV_A);
2359 2678
2360 fs_fd = inotify_init (); 2679 fs_fd = inotify_init ();
2361 2680
2362 if (fs_fd >= 0) 2681 if (fs_fd >= 0)
2363 { 2682 {
… …
2365 ev_set_priority (&fs_w, EV_MAXPRI); 2684 ev_set_priority (&fs_w, EV_MAXPRI);
2366 ev_io_start (EV_A_ &fs_w); 2685 ev_io_start (EV_A_ &fs_w);
2367 } 2686 }
2368} 2687}
2369 2688
2370void inline_size 2689inline_size void
2371infy_fork (EV_P) 2690infy_fork (EV_P)
2372{ 2691{
2373 int slot; 2692 int slot;
2374 2693
2375 if (fs_fd < 0) 2694 if (fs_fd < 0)
… …
2391 w->wd = -1; 2710 w->wd = -1;
2392 2711
2393 if (fs_fd >= 0) 2712 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 2713 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 2714 else
2396 ev_timer_start (EV_A_ &w->timer); 2715 ev_timer_again (EV_A_ &w->timer);
2397 } 2716 }
2398
2399 } 2717 }
2400} 2718}
2401 2719
2720#endif
2721
2722#ifdef _WIN32
2723# define EV_LSTAT(p,b) _stati64 (p, b)
2724#else
2725# define EV_LSTAT(p,b) lstat (p, b)
2402#endif 2726#endif
2403 2727
2404void 2728void
2405ev_stat_stat (EV_P_ ev_stat *w) 2729ev_stat_stat (EV_P_ ev_stat *w)
2406{ 2730{
… …
2433 || w->prev.st_atime != w->attr.st_atime 2757 || w->prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 2758 || w->prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 2759 || w->prev.st_ctime != w->attr.st_ctime
2436 ) { 2760 ) {
2437 #if EV_USE_INOTIFY 2761 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0)
2763 {
2438 infy_del (EV_A_ w); 2764 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 2765 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 2766 ev_stat_stat (EV_A_ w); /* avoid race... */
2767 }
2441 #endif 2768 #endif
2442 2769
2443 ev_feed_event (EV_A_ w, EV_STAT); 2770 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 2771 }
2445} 2772}
… …
2448ev_stat_start (EV_P_ ev_stat *w) 2775ev_stat_start (EV_P_ ev_stat *w)
2449{ 2776{
2450 if (expect_false (ev_is_active (w))) 2777 if (expect_false (ev_is_active (w)))
2451 return; 2778 return;
2452 2779
2453 /* since we use memcmp, we need to clear any padding data etc. */
2454 memset (&w->prev, 0, sizeof (ev_statdata));
2455 memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457 ev_stat_stat (EV_A_ w); 2780 ev_stat_stat (EV_A_ w);
2458 2781
2782 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 2783 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 2784
2462 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2785 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2463 ev_set_priority (&w->timer, ev_priority (w)); 2786 ev_set_priority (&w->timer, ev_priority (w));
2464 2787
2465#if EV_USE_INOTIFY 2788#if EV_USE_INOTIFY
2466 infy_init (EV_A); 2789 infy_init (EV_A);
2467 2790
2468 if (fs_fd >= 0) 2791 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 2792 infy_add (EV_A_ w);
2470 else 2793 else
2471#endif 2794#endif
2472 ev_timer_start (EV_A_ &w->timer); 2795 ev_timer_again (EV_A_ &w->timer);
2473 2796
2474 ev_start (EV_A_ (W)w, 1); 2797 ev_start (EV_A_ (W)w, 1);
2798
2799 EV_FREQUENT_CHECK;
2475} 2800}
2476 2801
2477void 2802void
2478ev_stat_stop (EV_P_ ev_stat *w) 2803ev_stat_stop (EV_P_ ev_stat *w)
2479{ 2804{
2480 clear_pending (EV_A_ (W)w); 2805 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 2806 if (expect_false (!ev_is_active (w)))
2482 return; 2807 return;
2483 2808
2809 EV_FREQUENT_CHECK;
2810
2484#if EV_USE_INOTIFY 2811#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 2812 infy_del (EV_A_ w);
2486#endif 2813#endif
2487 ev_timer_stop (EV_A_ &w->timer); 2814 ev_timer_stop (EV_A_ &w->timer);
2488 2815
2489 ev_stop (EV_A_ (W)w); 2816 ev_stop (EV_A_ (W)w);
2817
2818 EV_FREQUENT_CHECK;
2490} 2819}
2491#endif 2820#endif
2492 2821
2493#if EV_IDLE_ENABLE 2822#if EV_IDLE_ENABLE
2494void 2823void
… …
2496{ 2825{
2497 if (expect_false (ev_is_active (w))) 2826 if (expect_false (ev_is_active (w)))
2498 return; 2827 return;
2499 2828
2500 pri_adjust (EV_A_ (W)w); 2829 pri_adjust (EV_A_ (W)w);
2830
2831 EV_FREQUENT_CHECK;
2501 2832
2502 { 2833 {
2503 int active = ++idlecnt [ABSPRI (w)]; 2834 int active = ++idlecnt [ABSPRI (w)];
2504 2835
2505 ++idleall; 2836 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 2837 ev_start (EV_A_ (W)w, active);
2507 2838
2508 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2839 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509 idles [ABSPRI (w)][active - 1] = w; 2840 idles [ABSPRI (w)][active - 1] = w;
2510 } 2841 }
2842
2843 EV_FREQUENT_CHECK;
2511} 2844}
2512 2845
2513void 2846void
2514ev_idle_stop (EV_P_ ev_idle *w) 2847ev_idle_stop (EV_P_ ev_idle *w)
2515{ 2848{
2516 clear_pending (EV_A_ (W)w); 2849 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 2850 if (expect_false (!ev_is_active (w)))
2518 return; 2851 return;
2519 2852
2853 EV_FREQUENT_CHECK;
2854
2520 { 2855 {
2521 int active = ev_active (w); 2856 int active = ev_active (w);
2522 2857
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2858 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2859 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 2860
2526 ev_stop (EV_A_ (W)w); 2861 ev_stop (EV_A_ (W)w);
2527 --idleall; 2862 --idleall;
2528 } 2863 }
2864
2865 EV_FREQUENT_CHECK;
2529} 2866}
2530#endif 2867#endif
2531 2868
2532void 2869void
2533ev_prepare_start (EV_P_ ev_prepare *w) 2870ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 2871{
2535 if (expect_false (ev_is_active (w))) 2872 if (expect_false (ev_is_active (w)))
2536 return; 2873 return;
2874
2875 EV_FREQUENT_CHECK;
2537 2876
2538 ev_start (EV_A_ (W)w, ++preparecnt); 2877 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2878 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 2879 prepares [preparecnt - 1] = w;
2880
2881 EV_FREQUENT_CHECK;
2541} 2882}
2542 2883
2543void 2884void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 2885ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 2886{
2546 clear_pending (EV_A_ (W)w); 2887 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 2888 if (expect_false (!ev_is_active (w)))
2548 return; 2889 return;
2549 2890
2891 EV_FREQUENT_CHECK;
2892
2550 { 2893 {
2551 int active = ev_active (w); 2894 int active = ev_active (w);
2552 2895
2553 prepares [active - 1] = prepares [--preparecnt]; 2896 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 2897 ev_active (prepares [active - 1]) = active;
2555 } 2898 }
2556 2899
2557 ev_stop (EV_A_ (W)w); 2900 ev_stop (EV_A_ (W)w);
2901
2902 EV_FREQUENT_CHECK;
2558} 2903}
2559 2904
2560void 2905void
2561ev_check_start (EV_P_ ev_check *w) 2906ev_check_start (EV_P_ ev_check *w)
2562{ 2907{
2563 if (expect_false (ev_is_active (w))) 2908 if (expect_false (ev_is_active (w)))
2564 return; 2909 return;
2910
2911 EV_FREQUENT_CHECK;
2565 2912
2566 ev_start (EV_A_ (W)w, ++checkcnt); 2913 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2914 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 2915 checks [checkcnt - 1] = w;
2916
2917 EV_FREQUENT_CHECK;
2569} 2918}
2570 2919
2571void 2920void
2572ev_check_stop (EV_P_ ev_check *w) 2921ev_check_stop (EV_P_ ev_check *w)
2573{ 2922{
2574 clear_pending (EV_A_ (W)w); 2923 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 2924 if (expect_false (!ev_is_active (w)))
2576 return; 2925 return;
2577 2926
2927 EV_FREQUENT_CHECK;
2928
2578 { 2929 {
2579 int active = ev_active (w); 2930 int active = ev_active (w);
2580 2931
2581 checks [active - 1] = checks [--checkcnt]; 2932 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 2933 ev_active (checks [active - 1]) = active;
2583 } 2934 }
2584 2935
2585 ev_stop (EV_A_ (W)w); 2936 ev_stop (EV_A_ (W)w);
2937
2938 EV_FREQUENT_CHECK;
2586} 2939}
2587 2940
2588#if EV_EMBED_ENABLE 2941#if EV_EMBED_ENABLE
2589void noinline 2942void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 2943ev_embed_sweep (EV_P_ ev_embed *w)
… …
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 2970 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618 } 2971 }
2619 } 2972 }
2620} 2973}
2621 2974
2975static void
2976embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2977{
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979
2980 ev_embed_stop (EV_A_ w);
2981
2982 {
2983 struct ev_loop *loop = w->other;
2984
2985 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2987 }
2988
2989 ev_embed_start (EV_A_ w);
2990}
2991
2622#if 0 2992#if 0
2623static void 2993static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2994embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625{ 2995{
2626 ev_idle_stop (EV_A_ idle); 2996 ev_idle_stop (EV_A_ idle);
… …
2633 if (expect_false (ev_is_active (w))) 3003 if (expect_false (ev_is_active (w)))
2634 return; 3004 return;
2635 3005
2636 { 3006 {
2637 struct ev_loop *loop = w->other; 3007 struct ev_loop *loop = w->other;
2638 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2639 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640 } 3010 }
3011
3012 EV_FREQUENT_CHECK;
2641 3013
2642 ev_set_priority (&w->io, ev_priority (w)); 3014 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 3015 ev_io_start (EV_A_ &w->io);
2644 3016
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 3017 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 3018 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 3019 ev_prepare_start (EV_A_ &w->prepare);
2648 3020
3021 ev_fork_init (&w->fork, embed_fork_cb);
3022 ev_fork_start (EV_A_ &w->fork);
3023
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3024 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 3025
2651 ev_start (EV_A_ (W)w, 1); 3026 ev_start (EV_A_ (W)w, 1);
3027
3028 EV_FREQUENT_CHECK;
2652} 3029}
2653 3030
2654void 3031void
2655ev_embed_stop (EV_P_ ev_embed *w) 3032ev_embed_stop (EV_P_ ev_embed *w)
2656{ 3033{
2657 clear_pending (EV_A_ (W)w); 3034 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3035 if (expect_false (!ev_is_active (w)))
2659 return; 3036 return;
2660 3037
3038 EV_FREQUENT_CHECK;
3039
2661 ev_io_stop (EV_A_ &w->io); 3040 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 3041 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork);
2663 3043
2664 ev_stop (EV_A_ (W)w); 3044 EV_FREQUENT_CHECK;
2665} 3045}
2666#endif 3046#endif
2667 3047
2668#if EV_FORK_ENABLE 3048#if EV_FORK_ENABLE
2669void 3049void
2670ev_fork_start (EV_P_ ev_fork *w) 3050ev_fork_start (EV_P_ ev_fork *w)
2671{ 3051{
2672 if (expect_false (ev_is_active (w))) 3052 if (expect_false (ev_is_active (w)))
2673 return; 3053 return;
3054
3055 EV_FREQUENT_CHECK;
2674 3056
2675 ev_start (EV_A_ (W)w, ++forkcnt); 3057 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3058 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 3059 forks [forkcnt - 1] = w;
3060
3061 EV_FREQUENT_CHECK;
2678} 3062}
2679 3063
2680void 3064void
2681ev_fork_stop (EV_P_ ev_fork *w) 3065ev_fork_stop (EV_P_ ev_fork *w)
2682{ 3066{
2683 clear_pending (EV_A_ (W)w); 3067 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3068 if (expect_false (!ev_is_active (w)))
2685 return; 3069 return;
2686 3070
3071 EV_FREQUENT_CHECK;
3072
2687 { 3073 {
2688 int active = ev_active (w); 3074 int active = ev_active (w);
2689 3075
2690 forks [active - 1] = forks [--forkcnt]; 3076 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3077 ev_active (forks [active - 1]) = active;
2692 } 3078 }
2693 3079
2694 ev_stop (EV_A_ (W)w); 3080 ev_stop (EV_A_ (W)w);
3081
3082 EV_FREQUENT_CHECK;
2695} 3083}
2696#endif 3084#endif
2697 3085
2698#if EV_ASYNC_ENABLE 3086#if EV_ASYNC_ENABLE
2699void 3087void
… …
2701{ 3089{
2702 if (expect_false (ev_is_active (w))) 3090 if (expect_false (ev_is_active (w)))
2703 return; 3091 return;
2704 3092
2705 evpipe_init (EV_A); 3093 evpipe_init (EV_A);
3094
3095 EV_FREQUENT_CHECK;
2706 3096
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3097 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3098 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3099 asyncs [asynccnt - 1] = w;
3100
3101 EV_FREQUENT_CHECK;
2710} 3102}
2711 3103
2712void 3104void
2713ev_async_stop (EV_P_ ev_async *w) 3105ev_async_stop (EV_P_ ev_async *w)
2714{ 3106{
2715 clear_pending (EV_A_ (W)w); 3107 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3108 if (expect_false (!ev_is_active (w)))
2717 return; 3109 return;
2718 3110
3111 EV_FREQUENT_CHECK;
3112
2719 { 3113 {
2720 int active = ev_active (w); 3114 int active = ev_active (w);
2721 3115
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3116 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3117 ev_active (asyncs [active - 1]) = active;
2724 } 3118 }
2725 3119
2726 ev_stop (EV_A_ (W)w); 3120 ev_stop (EV_A_ (W)w);
3121
3122 EV_FREQUENT_CHECK;
2727} 3123}
2728 3124
2729void 3125void
2730ev_async_send (EV_P_ ev_async *w) 3126ev_async_send (EV_P_ ev_async *w)
2731{ 3127{
… …
2748once_cb (EV_P_ struct ev_once *once, int revents) 3144once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3145{
2750 void (*cb)(int revents, void *arg) = once->cb; 3146 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3147 void *arg = once->arg;
2752 3148
2753 ev_io_stop (EV_A_ &once->io); 3149 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3150 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3151 ev_free (once);
2756 3152
2757 cb (revents, arg); 3153 cb (revents, arg);
2758} 3154}
2759 3155
2760static void 3156static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3157once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3158{
2763 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3159 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3160
3161 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764} 3162}
2765 3163
2766static void 3164static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3165once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3166{
2769 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3167 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3168
3169 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770} 3170}
2771 3171
2772void 3172void
2773ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3173ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774{ 3174{
… …
2796 ev_timer_set (&once->to, timeout, 0.); 3196 ev_timer_set (&once->to, timeout, 0.);
2797 ev_timer_start (EV_A_ &once->to); 3197 ev_timer_start (EV_A_ &once->to);
2798 } 3198 }
2799} 3199}
2800 3200
3201/*****************************************************************************/
3202
3203#if 0
3204void
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206{
3207 int i, j;
3208 ev_watcher_list *wl, *wn;
3209
3210 if (types & (EV_IO | EV_EMBED))
3211 for (i = 0; i < anfdmax; ++i)
3212 for (wl = anfds [i].head; wl; )
3213 {
3214 wn = wl->next;
3215
3216#if EV_EMBED_ENABLE
3217 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3218 {
3219 if (types & EV_EMBED)
3220 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3221 }
3222 else
3223#endif
3224#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ;
3227 else
3228#endif
3229 if ((ev_io *)wl != &pipeev)
3230 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl);
3232
3233 wl = wn;
3234 }
3235
3236 if (types & (EV_TIMER | EV_STAT))
3237 for (i = timercnt + HEAP0; i-- > HEAP0; )
3238#if EV_STAT_ENABLE
3239 /*TODO: timer is not always active*/
3240 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3241 {
3242 if (types & EV_STAT)
3243 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3244 }
3245 else
3246#endif
3247 if (types & EV_TIMER)
3248 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3249
3250#if EV_PERIODIC_ENABLE
3251 if (types & EV_PERIODIC)
3252 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif
3255
3256#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; )
3259 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif
3262
3263#if EV_FORK_ENABLE
3264 if (types & EV_FORK)
3265 for (i = forkcnt; i--; )
3266 if (ev_cb (forks [i]) != embed_fork_cb)
3267 cb (EV_A_ EV_FORK, forks [i]);
3268#endif
3269
3270#if EV_ASYNC_ENABLE
3271 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif
3275
3276 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]);
3282
3283 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]);
3286
3287 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i)
3289 for (wl = signals [i].head; wl; )
3290 {
3291 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn;
3294 }
3295
3296 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; )
3298 for (wl = childs [i]; wl; )
3299 {
3300 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn;
3303 }
3304/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306}
3307#endif
3308
2801#if EV_MULTIPLICITY 3309#if EV_MULTIPLICITY
2802 #include "ev_wrap.h" 3310 #include "ev_wrap.h"
2803#endif 3311#endif
2804 3312
2805#ifdef __cplusplus 3313#ifdef __cplusplus

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