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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 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
279#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL
281#endif
282
283#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL
285#endif
286
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 287/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 288
242#ifndef CLOCK_MONOTONIC 289#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 290# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 291# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 306# include <sys/select.h>
260# endif 307# endif
261#endif 308#endif
262 309
263#if EV_USE_INOTIFY 310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
264# 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
265#endif 319#endif
266 320
267#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
268# 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
269#endif 332#endif
270 333
271#if EV_USE_EVENTFD 334#if EV_USE_EVENTFD
272/* 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 */
273# include <stdint.h> 336# include <stdint.h>
… …
279} 342}
280# endif 343# endif
281#endif 344#endif
282 345
283/**/ 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
284 353
285/* 354/*
286 * This is used to avoid floating point rounding problems. 355 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 356 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 357 * to ensure progress, time-wise, even when rounding
… …
328typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
329 398
330#define ev_active(w) ((W)(w))->active 399#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 400#define ev_at(w) ((WT)(w))->at
332 401
333#if EV_USE_MONOTONIC 402#if EV_USE_REALTIME
334/* 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 */
335/* 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
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif 410#endif
338 411
339#ifdef _WIN32 412#ifdef _WIN32
340# include "ev_win32.c" 413# include "ev_win32.c"
… …
349{ 422{
350 syserr_cb = cb; 423 syserr_cb = cb;
351} 424}
352 425
353static void noinline 426static void noinline
354syserr (const char *msg) 427ev_syserr (const char *msg)
355{ 428{
356 if (!msg) 429 if (!msg)
357 msg = "(libev) system error"; 430 msg = "(libev) system error";
358 431
359 if (syserr_cb) 432 if (syserr_cb)
… …
410typedef struct 483typedef struct
411{ 484{
412 WL head; 485 WL head;
413 unsigned char events; 486 unsigned char events;
414 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
415#if EV_SELECT_IS_WINSOCKET 493#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 494 SOCKET handle;
417#endif 495#endif
418} ANFD; 496} ANFD;
419 497
… …
430 WL head; 508 WL head;
431} ANFS; 509} ANFS;
432#endif 510#endif
433 511
434/* Heap Entry */ 512/* Heap Entry */
435#define EV_HEAP_CACHE_AT 0
436#if EV_HEAP_CACHE_AT 513#if EV_HEAP_CACHE_AT
437 typedef struct { 514 typedef struct {
515 ev_tstamp at;
438 WT w; 516 WT w;
439 ev_tstamp at;
440 } ANHE; 517 } ANHE;
441 518
442 #define ANHE_w(he) (he).w /* access watcher, read-write */ 519 #define ANHE_w(he) (he).w /* access watcher, read-write */
443 #define ANHE_at(he) (he).at /* access cached at, read-only */ 520 #define ANHE_at(he) (he).at /* access cached at, read-only */
444 #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 */
445#else 522#else
446 typedef WT ANHE; 523 typedef WT ANHE;
447 524
448 #define ANHE_w(he) (he) 525 #define ANHE_w(he) (he)
449 #define ANHE_at(he) (he)->at 526 #define ANHE_at(he) (he)->at
450 #define ANHE_at_set(he) 527 #define ANHE_at_cache(he)
451#endif 528#endif
452 529
453#if EV_MULTIPLICITY 530#if EV_MULTIPLICITY
454 531
455 struct ev_loop 532 struct ev_loop
… …
480 557
481ev_tstamp 558ev_tstamp
482ev_time (void) 559ev_time (void)
483{ 560{
484#if EV_USE_REALTIME 561#if EV_USE_REALTIME
562 if (expect_true (have_realtime))
563 {
485 struct timespec ts; 564 struct timespec ts;
486 clock_gettime (CLOCK_REALTIME, &ts); 565 clock_gettime (CLOCK_REALTIME, &ts);
487 return ts.tv_sec + ts.tv_nsec * 1e-9; 566 return ts.tv_sec + ts.tv_nsec * 1e-9;
488#else 567 }
568#endif
569
489 struct timeval tv; 570 struct timeval tv;
490 gettimeofday (&tv, 0); 571 gettimeofday (&tv, 0);
491 return tv.tv_sec + tv.tv_usec * 1e-6; 572 return tv.tv_sec + tv.tv_usec * 1e-6;
492#endif
493} 573}
494 574
495ev_tstamp inline_size 575inline_size ev_tstamp
496get_clock (void) 576get_clock (void)
497{ 577{
498#if EV_USE_MONOTONIC 578#if EV_USE_MONOTONIC
499 if (expect_true (have_monotonic)) 579 if (expect_true (have_monotonic))
500 { 580 {
… …
533 struct timeval tv; 613 struct timeval tv;
534 614
535 tv.tv_sec = (time_t)delay; 615 tv.tv_sec = (time_t)delay;
536 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537 617
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 */
538 select (0, 0, 0, 0, &tv); 621 select (0, 0, 0, 0, &tv);
539#endif 622#endif
540 } 623 }
541} 624}
542 625
543/*****************************************************************************/ 626/*****************************************************************************/
544 627
545#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 */
546 629
547int inline_size 630inline_size int
548array_nextsize (int elem, int cur, int cnt) 631array_nextsize (int elem, int cur, int cnt)
549{ 632{
550 int ncur = cur + 1; 633 int ncur = cur + 1;
551 634
552 do 635 do
… …
569array_realloc (int elem, void *base, int *cur, int cnt) 652array_realloc (int elem, void *base, int *cur, int cnt)
570{ 653{
571 *cur = array_nextsize (elem, *cur, cnt); 654 *cur = array_nextsize (elem, *cur, cnt);
572 return ev_realloc (base, elem * *cur); 655 return ev_realloc (base, elem * *cur);
573} 656}
657
658#define array_init_zero(base,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
574 660
575#define array_needsize(type,base,cur,cnt,init) \ 661#define array_needsize(type,base,cur,cnt,init) \
576 if (expect_false ((cnt) > (cur))) \ 662 if (expect_false ((cnt) > (cur))) \
577 { \ 663 { \
578 int ocur_ = (cur); \ 664 int ocur_ = (cur); \
… …
590 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591 } 677 }
592#endif 678#endif
593 679
594#define array_free(stem, idx) \ 680#define array_free(stem, idx) \
595 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
596 682
597/*****************************************************************************/ 683/*****************************************************************************/
598 684
599void noinline 685void noinline
600ev_feed_event (EV_P_ void *w, int revents) 686ev_feed_event (EV_P_ void *w, int revents)
… …
611 pendings [pri][w_->pending - 1].w = w_; 697 pendings [pri][w_->pending - 1].w = w_;
612 pendings [pri][w_->pending - 1].events = revents; 698 pendings [pri][w_->pending - 1].events = revents;
613 } 699 }
614} 700}
615 701
616void 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
617queue_events (EV_P_ W *events, int eventcnt, int type) 718queue_events (EV_P_ W *events, int eventcnt, int type)
618{ 719{
619 int i; 720 int i;
620 721
621 for (i = 0; i < eventcnt; ++i) 722 for (i = 0; i < eventcnt; ++i)
622 ev_feed_event (EV_A_ events [i], type); 723 ev_feed_event (EV_A_ events [i], type);
623} 724}
624 725
625/*****************************************************************************/ 726/*****************************************************************************/
626 727
627void inline_size 728inline_speed void
628anfds_init (ANFD *base, int count)
629{
630 while (count--)
631 {
632 base->head = 0;
633 base->events = EV_NONE;
634 base->reify = 0;
635
636 ++base;
637 }
638}
639
640void inline_speed
641fd_event (EV_P_ int fd, int revents) 729fd_event (EV_P_ int fd, int revents)
642{ 730{
643 ANFD *anfd = anfds + fd; 731 ANFD *anfd = anfds + fd;
644 ev_io *w; 732 ev_io *w;
645 733
… …
657{ 745{
658 if (fd >= 0 && fd < anfdmax) 746 if (fd >= 0 && fd < anfdmax)
659 fd_event (EV_A_ fd, revents); 747 fd_event (EV_A_ fd, revents);
660} 748}
661 749
662void inline_size 750inline_size void
663fd_reify (EV_P) 751fd_reify (EV_P)
664{ 752{
665 int i; 753 int i;
666 754
667 for (i = 0; i < fdchangecnt; ++i) 755 for (i = 0; i < fdchangecnt; ++i)
… …
676 events |= (unsigned char)w->events; 764 events |= (unsigned char)w->events;
677 765
678#if EV_SELECT_IS_WINSOCKET 766#if EV_SELECT_IS_WINSOCKET
679 if (events) 767 if (events)
680 { 768 {
681 unsigned long argp; 769 unsigned long arg;
682 #ifdef EV_FD_TO_WIN32_HANDLE 770 #ifdef EV_FD_TO_WIN32_HANDLE
683 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684 #else 772 #else
685 anfd->handle = _get_osfhandle (fd); 773 anfd->handle = _get_osfhandle (fd);
686 #endif 774 #endif
687 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));
688 } 776 }
689#endif 777#endif
690 778
691 { 779 {
692 unsigned char o_events = anfd->events; 780 unsigned char o_events = anfd->events;
693 unsigned char o_reify = anfd->reify; 781 unsigned char o_reify = anfd->reify;
694 782
695 anfd->reify = 0; 783 anfd->reify = 0;
696 anfd->events = events; 784 anfd->events = events;
697 785
698 if (o_events != events || o_reify & EV_IOFDSET) 786 if (o_events != events || o_reify & EV__IOFDSET)
699 backend_modify (EV_A_ fd, o_events, events); 787 backend_modify (EV_A_ fd, o_events, events);
700 } 788 }
701 } 789 }
702 790
703 fdchangecnt = 0; 791 fdchangecnt = 0;
704} 792}
705 793
706void inline_size 794inline_size void
707fd_change (EV_P_ int fd, int flags) 795fd_change (EV_P_ int fd, int flags)
708{ 796{
709 unsigned char reify = anfds [fd].reify; 797 unsigned char reify = anfds [fd].reify;
710 anfds [fd].reify |= flags; 798 anfds [fd].reify |= flags;
711 799
… …
715 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716 fdchanges [fdchangecnt - 1] = fd; 804 fdchanges [fdchangecnt - 1] = fd;
717 } 805 }
718} 806}
719 807
720void inline_speed 808inline_speed void
721fd_kill (EV_P_ int fd) 809fd_kill (EV_P_ int fd)
722{ 810{
723 ev_io *w; 811 ev_io *w;
724 812
725 while ((w = (ev_io *)anfds [fd].head)) 813 while ((w = (ev_io *)anfds [fd].head))
… …
727 ev_io_stop (EV_A_ w); 815 ev_io_stop (EV_A_ w);
728 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);
729 } 817 }
730} 818}
731 819
732int inline_size 820inline_size int
733fd_valid (int fd) 821fd_valid (int fd)
734{ 822{
735#ifdef _WIN32 823#ifdef _WIN32
736 return _get_osfhandle (fd) != -1; 824 return _get_osfhandle (fd) != -1;
737#else 825#else
… …
745{ 833{
746 int fd; 834 int fd;
747 835
748 for (fd = 0; fd < anfdmax; ++fd) 836 for (fd = 0; fd < anfdmax; ++fd)
749 if (anfds [fd].events) 837 if (anfds [fd].events)
750 if (!fd_valid (fd) == -1 && errno == EBADF) 838 if (!fd_valid (fd) && errno == EBADF)
751 fd_kill (EV_A_ fd); 839 fd_kill (EV_A_ fd);
752} 840}
753 841
754/* 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 */
755static void noinline 843static void noinline
… …
773 861
774 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
775 if (anfds [fd].events) 863 if (anfds [fd].events)
776 { 864 {
777 anfds [fd].events = 0; 865 anfds [fd].events = 0;
866 anfds [fd].emask = 0;
778 fd_change (EV_A_ fd, EV_IOFDSET | 1); 867 fd_change (EV_A_ fd, EV__IOFDSET | 1);
779 } 868 }
780} 869}
781 870
782/*****************************************************************************/ 871/*****************************************************************************/
783 872
… …
791 * at the moment we allow libev the luxury of two heaps, 880 * at the moment we allow libev the luxury of two heaps,
792 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 881 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793 * which is more cache-efficient. 882 * which is more cache-efficient.
794 * the difference is about 5% with 50000+ watchers. 883 * the difference is about 5% with 50000+ watchers.
795 */ 884 */
796#define EV_USE_4HEAP !EV_MINIMAL
797#if EV_USE_4HEAP 885#if EV_USE_4HEAP
798 886
799#define DHEAP 4 887#define DHEAP 4
800#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 888#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801 889#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802/* towards the root */ 890#define UPHEAP_DONE(p,k) ((p) == (k))
803void inline_speed
804upheap (ANHE *heap, int k)
805{
806 ANHE he = heap [k];
807
808 for (;;)
809 {
810 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813 break;
814
815 heap [k] = heap [p];
816 ev_active (ANHE_w (heap [k])) = k;
817 k = p;
818 }
819
820 ev_active (ANHE_w (he)) = k;
821 heap [k] = he;
822}
823 891
824/* away from the root */ 892/* away from the root */
825void inline_speed 893inline_speed void
826downheap (ANHE *heap, int N, int k) 894downheap (ANHE *heap, int N, int k)
827{ 895{
828 ANHE he = heap [k]; 896 ANHE he = heap [k];
829 ANHE *E = heap + N + HEAP0; 897 ANHE *E = heap + N + HEAP0;
830 898
831 for (;;) 899 for (;;)
832 { 900 {
833 ev_tstamp minat; 901 ev_tstamp minat;
834 ANHE *minpos; 902 ANHE *minpos;
835 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 903 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836 904
837 // find minimum child 905 /* find minimum child */
838 if (expect_true (pos + DHEAP - 1 < E)) 906 if (expect_true (pos + DHEAP - 1 < E))
839 { 907 {
840 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 908 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841 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));
842 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));
843 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 911 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844 } 912 }
845 else if (pos < E) 913 else if (pos < E)
846 { 914 {
847 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 915 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 916 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
853 break; 921 break;
854 922
855 if (ANHE_at (he) <= minat) 923 if (ANHE_at (he) <= minat)
856 break; 924 break;
857 925
926 heap [k] = *minpos;
858 ev_active (ANHE_w (*minpos)) = k; 927 ev_active (ANHE_w (*minpos)) = k;
859 heap [k] = *minpos;
860 928
861 k = minpos - heap; 929 k = minpos - heap;
862 } 930 }
863 931
932 heap [k] = he;
864 ev_active (ANHE_w (he)) = k; 933 ev_active (ANHE_w (he)) = k;
865 heap [k] = he;
866} 934}
867 935
868#else // 4HEAP 936#else /* 4HEAP */
869 937
870#define HEAP0 1 938#define HEAP0 1
939#define HPARENT(k) ((k) >> 1)
940#define UPHEAP_DONE(p,k) (!(p))
871 941
872/* towards the root */ 942/* away from the root */
873void inline_speed 943inline_speed void
874upheap (ANHE *heap, int k) 944downheap (ANHE *heap, int N, int k)
875{ 945{
876 ANHE he = heap [k]; 946 ANHE he = heap [k];
877 947
878 for (;;) 948 for (;;)
879 { 949 {
880 int p = k >> 1; 950 int c = k << 1;
881 951
882 /* maybe we could use a dummy element at heap [0]? */ 952 if (c > N + HEAP0 - 1)
883 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884 break; 953 break;
885 954
886 heap [k] = heap [p];
887 ev_active (ANHE_w (heap [k])) = k;
888 k = p;
889 }
890
891 heap [k] = w;
892 ev_active (ANHE_w (heap [k])) = k;
893}
894
895/* away from the root */
896void inline_speed
897downheap (ANHE *heap, int N, int k)
898{
899 ANHE he = heap [k];
900
901 for (;;)
902 {
903 int c = k << 1;
904
905 if (c > N)
906 break;
907
908 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])
909 ? 1 : 0; 956 ? 1 : 0;
910 957
911 if (w->at <= ANHE_at (heap [c])) 958 if (ANHE_at (he) <= ANHE_at (heap [c]))
912 break; 959 break;
913 960
914 heap [k] = heap [c]; 961 heap [k] = heap [c];
915 ev_active (ANHE_w (heap [k])) = k; 962 ev_active (ANHE_w (heap [k])) = k;
916 963
… …
920 heap [k] = he; 967 heap [k] = he;
921 ev_active (ANHE_w (he)) = k; 968 ev_active (ANHE_w (he)) = k;
922} 969}
923#endif 970#endif
924 971
925void 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
926adjustheap (ANHE *heap, int N, int k) 995adjustheap (ANHE *heap, int N, int k)
927{ 996{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
928 upheap (heap, k); 998 upheap (heap, k);
999 else
929 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);
930} 1013}
931 1014
932/*****************************************************************************/ 1015/*****************************************************************************/
933 1016
934typedef struct 1017typedef struct
… …
940static ANSIG *signals; 1023static ANSIG *signals;
941static int signalmax; 1024static int signalmax;
942 1025
943static EV_ATOMIC_T gotsig; 1026static EV_ATOMIC_T gotsig;
944 1027
945void inline_size
946signals_init (ANSIG *base, int count)
947{
948 while (count--)
949 {
950 base->head = 0;
951 base->gotsig = 0;
952
953 ++base;
954 }
955}
956
957/*****************************************************************************/ 1028/*****************************************************************************/
958 1029
959void inline_speed 1030inline_speed void
960fd_intern (int fd) 1031fd_intern (int fd)
961{ 1032{
962#ifdef _WIN32 1033#ifdef _WIN32
963 int arg = 1; 1034 unsigned long arg = 1;
964 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
965#else 1036#else
966 fcntl (fd, F_SETFD, FD_CLOEXEC); 1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
967 fcntl (fd, F_SETFL, O_NONBLOCK); 1038 fcntl (fd, F_SETFL, O_NONBLOCK);
968#endif 1039#endif
… …
982 } 1053 }
983 else 1054 else
984#endif 1055#endif
985 { 1056 {
986 while (pipe (evpipe)) 1057 while (pipe (evpipe))
987 syserr ("(libev) error creating signal/async pipe"); 1058 ev_syserr ("(libev) error creating signal/async pipe");
988 1059
989 fd_intern (evpipe [0]); 1060 fd_intern (evpipe [0]);
990 fd_intern (evpipe [1]); 1061 fd_intern (evpipe [1]);
991 ev_io_set (&pipeev, evpipe [0], EV_READ); 1062 ev_io_set (&pipeev, evpipe [0], EV_READ);
992 } 1063 }
… …
994 ev_io_start (EV_A_ &pipeev); 1065 ev_io_start (EV_A_ &pipeev);
995 ev_unref (EV_A); /* watcher should not keep loop alive */ 1066 ev_unref (EV_A); /* watcher should not keep loop alive */
996 } 1067 }
997} 1068}
998 1069
999void inline_size 1070inline_size void
1000evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1071evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001{ 1072{
1002 if (!*flag) 1073 if (!*flag)
1003 { 1074 {
1004 int old_errno = errno; /* save errno because write might clobber it */ 1075 int old_errno = errno; /* save errno because write might clobber it */
… …
1082ev_feed_signal_event (EV_P_ int signum) 1153ev_feed_signal_event (EV_P_ int signum)
1083{ 1154{
1084 WL w; 1155 WL w;
1085 1156
1086#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
1087 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));
1088#endif 1159#endif
1089 1160
1090 --signum; 1161 --signum;
1091 1162
1092 if (signum < 0 || signum >= signalmax) 1163 if (signum < 0 || signum >= signalmax)
… …
1108 1179
1109#ifndef WIFCONTINUED 1180#ifndef WIFCONTINUED
1110# define WIFCONTINUED(status) 0 1181# define WIFCONTINUED(status) 0
1111#endif 1182#endif
1112 1183
1113void inline_speed 1184inline_speed void
1114child_reap (EV_P_ int chain, int pid, int status) 1185child_reap (EV_P_ int chain, int pid, int status)
1115{ 1186{
1116 ev_child *w; 1187 ev_child *w;
1117 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118 1189
… …
1221 /* kqueue is borked on everything but netbsd apparently */ 1292 /* kqueue is borked on everything but netbsd apparently */
1222 /* 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 */
1223 flags &= ~EVBACKEND_KQUEUE; 1294 flags &= ~EVBACKEND_KQUEUE;
1224#endif 1295#endif
1225#ifdef __APPLE__ 1296#ifdef __APPLE__
1226 // flags &= ~EVBACKEND_KQUEUE; for documentation 1297 /* only select works correctly on that "unix-certified" platform */
1227 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 */
1228#endif 1300#endif
1229 1301
1230 return flags; 1302 return flags;
1231} 1303}
1232 1304
… …
1269static void noinline 1341static void noinline
1270loop_init (EV_P_ unsigned int flags) 1342loop_init (EV_P_ unsigned int flags)
1271{ 1343{
1272 if (!backend) 1344 if (!backend)
1273 { 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
1274#if EV_USE_MONOTONIC 1356#if EV_USE_MONOTONIC
1357 if (!have_monotonic)
1275 { 1358 {
1276 struct timespec ts; 1359 struct timespec ts;
1360
1277 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278 have_monotonic = 1; 1362 have_monotonic = 1;
1279 } 1363 }
1280#endif 1364#endif
1281 1365
1282 ev_rt_now = ev_time (); 1366 ev_rt_now = ev_time ();
1283 mn_now = get_clock (); 1367 mn_now = get_clock ();
1284 now_floor = mn_now; 1368 now_floor = mn_now;
… …
1383 } 1467 }
1384 1468
1385 ev_free (anfds); anfdmax = 0; 1469 ev_free (anfds); anfdmax = 0;
1386 1470
1387 /* 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);
1388 array_free (fdchange, EMPTY); 1473 array_free (fdchange, EMPTY);
1389 array_free (timer, EMPTY); 1474 array_free (timer, EMPTY);
1390#if EV_PERIODIC_ENABLE 1475#if EV_PERIODIC_ENABLE
1391 array_free (periodic, EMPTY); 1476 array_free (periodic, EMPTY);
1392#endif 1477#endif
… …
1401 1486
1402 backend = 0; 1487 backend = 0;
1403} 1488}
1404 1489
1405#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1406void inline_size infy_fork (EV_P); 1491inline_size void infy_fork (EV_P);
1407#endif 1492#endif
1408 1493
1409void inline_size 1494inline_size void
1410loop_fork (EV_P) 1495loop_fork (EV_P)
1411{ 1496{
1412#if EV_USE_PORT 1497#if EV_USE_PORT
1413 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1498 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414#endif 1499#endif
… …
1452 1537
1453 postfork = 0; 1538 postfork = 0;
1454} 1539}
1455 1540
1456#if EV_MULTIPLICITY 1541#if EV_MULTIPLICITY
1542
1457struct ev_loop * 1543struct ev_loop *
1458ev_loop_new (unsigned int flags) 1544ev_loop_new (unsigned int flags)
1459{ 1545{
1460 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));
1461 1547
… …
1479void 1565void
1480ev_loop_fork (EV_P) 1566ev_loop_fork (EV_P)
1481{ 1567{
1482 postfork = 1; /* must be in line with ev_default_fork */ 1568 postfork = 1; /* must be in line with ev_default_fork */
1483} 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)
1484#endif 1666# endif
1667#endif
1668}
1669
1670#endif /* multiplicity */
1485 1671
1486#if EV_MULTIPLICITY 1672#if EV_MULTIPLICITY
1487struct ev_loop * 1673struct ev_loop *
1488ev_default_loop_init (unsigned int flags) 1674ev_default_loop_init (unsigned int flags)
1489#else 1675#else
… …
1522{ 1708{
1523#if EV_MULTIPLICITY 1709#if EV_MULTIPLICITY
1524 struct ev_loop *loop = ev_default_loop_ptr; 1710 struct ev_loop *loop = ev_default_loop_ptr;
1525#endif 1711#endif
1526 1712
1713 ev_default_loop_ptr = 0;
1714
1527#ifndef _WIN32 1715#ifndef _WIN32
1528 ev_ref (EV_A); /* child watcher */ 1716 ev_ref (EV_A); /* child watcher */
1529 ev_signal_stop (EV_A_ &childev); 1717 ev_signal_stop (EV_A_ &childev);
1530#endif 1718#endif
1531 1719
… …
1537{ 1725{
1538#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1539 struct ev_loop *loop = ev_default_loop_ptr; 1727 struct ev_loop *loop = ev_default_loop_ptr;
1540#endif 1728#endif
1541 1729
1542 if (backend)
1543 postfork = 1; /* must be in line with ev_loop_fork */ 1730 postfork = 1; /* must be in line with ev_loop_fork */
1544} 1731}
1545 1732
1546/*****************************************************************************/ 1733/*****************************************************************************/
1547 1734
1548void 1735void
1549ev_invoke (EV_P_ void *w, int revents) 1736ev_invoke (EV_P_ void *w, int revents)
1550{ 1737{
1551 EV_CB_INVOKE ((W)w, revents); 1738 EV_CB_INVOKE ((W)w, revents);
1552} 1739}
1553 1740
1554void inline_speed 1741inline_speed void
1555call_pending (EV_P) 1742call_pending (EV_P)
1556{ 1743{
1557 int pri; 1744 int pri;
1558 1745
1559 for (pri = NUMPRI; pri--; ) 1746 for (pri = NUMPRI; pri--; )
… …
1561 { 1748 {
1562 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563 1750
1564 if (expect_true (p->w)) 1751 if (expect_true (p->w))
1565 { 1752 {
1566 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1567 1754
1568 p->w->pending = 0; 1755 p->w->pending = 0;
1569 EV_CB_INVOKE (p->w, p->events); 1756 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK;
1570 } 1758 }
1571 } 1759 }
1572} 1760}
1573 1761
1574#if EV_IDLE_ENABLE 1762#if EV_IDLE_ENABLE
1575void inline_size 1763inline_size void
1576idle_reify (EV_P) 1764idle_reify (EV_P)
1577{ 1765{
1578 if (expect_false (idleall)) 1766 if (expect_false (idleall))
1579 { 1767 {
1580 int pri; 1768 int pri;
… …
1592 } 1780 }
1593 } 1781 }
1594} 1782}
1595#endif 1783#endif
1596 1784
1597void inline_size 1785inline_size void
1598timers_reify (EV_P) 1786timers_reify (EV_P)
1599{ 1787{
1788 EV_FREQUENT_CHECK;
1789
1600 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 1790 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601 { 1791 {
1602 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1792 do
1603
1604 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606 /* first reschedule or stop timer */
1607 if (w->repeat)
1608 { 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 {
1801 ev_at (w) += w->repeat;
1802 if (ev_at (w) < mn_now)
1803 ev_at (w) = mn_now;
1804
1609 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.));
1610 1806
1611 ev_at (w) += w->repeat;
1612 if (ev_at (w) < mn_now)
1613 ev_at (w) = mn_now;
1614
1615 ANHE_at_set (timers [HEAP0]); 1807 ANHE_at_cache (timers [HEAP0]);
1616 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);
1617 } 1815 }
1618 else 1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620 1817
1621 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1818 feed_reverse_done (EV_A_ EV_TIMEOUT);
1622 } 1819 }
1623} 1820}
1624 1821
1625#if EV_PERIODIC_ENABLE 1822#if EV_PERIODIC_ENABLE
1626void inline_size 1823inline_size void
1627periodics_reify (EV_P) 1824periodics_reify (EV_P)
1628{ 1825{
1826 EV_FREQUENT_CHECK;
1827
1629 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 1828 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630 { 1829 {
1631 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1830 int feed_count = 0;
1632 1831
1633 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1832 do
1634
1635 /* first reschedule or stop timer */
1636 if (w->reschedule_cb)
1637 { 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 {
1638 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1842
1639 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));
1844
1640 ANHE_at_set (periodics [HEAP0]); 1845 ANHE_at_cache (periodics [HEAP0]);
1641 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);
1642 } 1872 }
1643 else if (w->interval) 1873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644 {
1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648 ANHE_at_set (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0);
1650 }
1651 else
1652 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653 1874
1654 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1875 feed_reverse_done (EV_A_ EV_PERIODIC);
1655 } 1876 }
1656} 1877}
1657 1878
1658static void noinline 1879static void noinline
1659periodics_reschedule (EV_P) 1880periodics_reschedule (EV_P)
… …
1668 if (w->reschedule_cb) 1889 if (w->reschedule_cb)
1669 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670 else if (w->interval) 1891 else if (w->interval)
1671 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;
1672 1893
1673 ANHE_at_set (periodics [i]); 1894 ANHE_at_cache (periodics [i]);
1674 } 1895 }
1675 1896
1676 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
1677 for (i = periodiccnt >> 1; --i; )
1678 downheap (periodics, periodiccnt, i + HEAP0); 1897 reheap (periodics, periodiccnt);
1679} 1898}
1680#endif 1899#endif
1681 1900
1682void inline_speed 1901inline_speed void
1683time_update (EV_P_ ev_tstamp max_block) 1902time_update (EV_P_ ev_tstamp max_block)
1684{ 1903{
1685 int i; 1904 int i;
1686 1905
1687#if EV_USE_MONOTONIC 1906#if EV_USE_MONOTONIC
… …
1741 /* 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 */
1742 for (i = 0; i < timercnt; ++i) 1961 for (i = 0; i < timercnt; ++i)
1743 { 1962 {
1744 ANHE *he = timers + i + HEAP0; 1963 ANHE *he = timers + i + HEAP0;
1745 ANHE_w (*he)->at += ev_rt_now - mn_now; 1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1746 ANHE_at_set (*he); 1965 ANHE_at_cache (*he);
1747 } 1966 }
1748 } 1967 }
1749 1968
1750 mn_now = ev_rt_now; 1969 mn_now = ev_rt_now;
1751 } 1970 }
… …
1761ev_unref (EV_P) 1980ev_unref (EV_P)
1762{ 1981{
1763 --activecnt; 1982 --activecnt;
1764} 1983}
1765 1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1766static int loop_done; 1991static int loop_done;
1767 1992
1768void 1993void
1769ev_loop (EV_P_ int flags) 1994ev_loop (EV_P_ int flags)
1770{ 1995{
… …
1772 1997
1773 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 */
1774 1999
1775 do 2000 do
1776 { 2001 {
2002#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A);
2004#endif
2005
1777#ifndef _WIN32 2006#ifndef _WIN32
1778 if (expect_false (curpid)) /* penalise the forking check even more */ 2007 if (expect_false (curpid)) /* penalise the forking check even more */
1779 if (expect_false (getpid () != curpid)) 2008 if (expect_false (getpid () != curpid))
1780 { 2009 {
1781 curpid = getpid (); 2010 curpid = getpid ();
… …
1798 { 2027 {
1799 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800 call_pending (EV_A); 2029 call_pending (EV_A);
1801 } 2030 }
1802 2031
1803 if (expect_false (!activecnt))
1804 break;
1805
1806 /* we might have forked, so reify kernel state if necessary */ 2032 /* we might have forked, so reify kernel state if necessary */
1807 if (expect_false (postfork)) 2033 if (expect_false (postfork))
1808 loop_fork (EV_A); 2034 loop_fork (EV_A);
1809 2035
1810 /* update fd-related kernel structures */ 2036 /* update fd-related kernel structures */
… …
1817 2043
1818 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819 { 2045 {
1820 /* update time to cancel out callback processing overhead */ 2046 /* update time to cancel out callback processing overhead */
1821 time_update (EV_A_ 1e100); 2047 time_update (EV_A_ 1e100);
1822
1823 waittime = MAX_BLOCKTIME;
1824 2048
1825 if (timercnt) 2049 if (timercnt)
1826 { 2050 {
1827 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1828 if (waittime > to) waittime = to; 2052 if (waittime > to) waittime = to;
… …
1891 loop_done = how; 2115 loop_done = how;
1892} 2116}
1893 2117
1894/*****************************************************************************/ 2118/*****************************************************************************/
1895 2119
1896void inline_size 2120inline_size void
1897wlist_add (WL *head, WL elem) 2121wlist_add (WL *head, WL elem)
1898{ 2122{
1899 elem->next = *head; 2123 elem->next = *head;
1900 *head = elem; 2124 *head = elem;
1901} 2125}
1902 2126
1903void inline_size 2127inline_size void
1904wlist_del (WL *head, WL elem) 2128wlist_del (WL *head, WL elem)
1905{ 2129{
1906 while (*head) 2130 while (*head)
1907 { 2131 {
1908 if (*head == elem) 2132 if (*head == elem)
… …
1913 2137
1914 head = &(*head)->next; 2138 head = &(*head)->next;
1915 } 2139 }
1916} 2140}
1917 2141
1918void inline_speed 2142inline_speed void
1919clear_pending (EV_P_ W w) 2143clear_pending (EV_P_ W w)
1920{ 2144{
1921 if (w->pending) 2145 if (w->pending)
1922 { 2146 {
1923 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2147 pendings [ABSPRI (w)][w->pending - 1].w = 0;
… …
1940 } 2164 }
1941 else 2165 else
1942 return 0; 2166 return 0;
1943} 2167}
1944 2168
1945void inline_size 2169inline_size void
1946pri_adjust (EV_P_ W w) 2170pri_adjust (EV_P_ W w)
1947{ 2171{
1948 int pri = w->priority; 2172 int pri = w->priority;
1949 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951 w->priority = pri; 2175 w->priority = pri;
1952} 2176}
1953 2177
1954void inline_speed 2178inline_speed void
1955ev_start (EV_P_ W w, int active) 2179ev_start (EV_P_ W w, int active)
1956{ 2180{
1957 pri_adjust (EV_A_ w); 2181 pri_adjust (EV_A_ w);
1958 w->active = active; 2182 w->active = active;
1959 ev_ref (EV_A); 2183 ev_ref (EV_A);
1960} 2184}
1961 2185
1962void inline_size 2186inline_size void
1963ev_stop (EV_P_ W w) 2187ev_stop (EV_P_ W w)
1964{ 2188{
1965 ev_unref (EV_A); 2189 ev_unref (EV_A);
1966 w->active = 0; 2190 w->active = 0;
1967} 2191}
… …
1974 int fd = w->fd; 2198 int fd = w->fd;
1975 2199
1976 if (expect_false (ev_is_active (w))) 2200 if (expect_false (ev_is_active (w)))
1977 return; 2201 return;
1978 2202
1979 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;
1980 2207
1981 ev_start (EV_A_ (W)w, 1); 2208 ev_start (EV_A_ (W)w, 1);
1982 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983 wlist_add (&anfds[fd].head, (WL)w); 2210 wlist_add (&anfds[fd].head, (WL)w);
1984 2211
1985 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1986 w->events &= ~EV_IOFDSET; 2213 w->events &= ~EV__IOFDSET;
2214
2215 EV_FREQUENT_CHECK;
1987} 2216}
1988 2217
1989void noinline 2218void noinline
1990ev_io_stop (EV_P_ ev_io *w) 2219ev_io_stop (EV_P_ ev_io *w)
1991{ 2220{
1992 clear_pending (EV_A_ (W)w); 2221 clear_pending (EV_A_ (W)w);
1993 if (expect_false (!ev_is_active (w))) 2222 if (expect_false (!ev_is_active (w)))
1994 return; 2223 return;
1995 2224
1996 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;
1997 2228
1998 wlist_del (&anfds[w->fd].head, (WL)w); 2229 wlist_del (&anfds[w->fd].head, (WL)w);
1999 ev_stop (EV_A_ (W)w); 2230 ev_stop (EV_A_ (W)w);
2000 2231
2001 fd_change (EV_A_ w->fd, 1); 2232 fd_change (EV_A_ w->fd, 1);
2233
2234 EV_FREQUENT_CHECK;
2002} 2235}
2003 2236
2004void noinline 2237void noinline
2005ev_timer_start (EV_P_ ev_timer *w) 2238ev_timer_start (EV_P_ ev_timer *w)
2006{ 2239{
2007 if (expect_false (ev_is_active (w))) 2240 if (expect_false (ev_is_active (w)))
2008 return; 2241 return;
2009 2242
2010 ev_at (w) += mn_now; 2243 ev_at (w) += mn_now;
2011 2244
2012 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.));
2013 2246
2247 EV_FREQUENT_CHECK;
2248
2249 ++timercnt;
2014 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2250 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2251 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016 ANHE_w (timers [ev_active (w)]) = (WT)w; 2252 ANHE_w (timers [ev_active (w)]) = (WT)w;
2017 ANHE_at_set (timers [ev_active (w)]); 2253 ANHE_at_cache (timers [ev_active (w)]);
2018 upheap (timers, ev_active (w)); 2254 upheap (timers, ev_active (w));
2019 2255
2256 EV_FREQUENT_CHECK;
2257
2020 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2258 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021} 2259}
2022 2260
2023void noinline 2261void noinline
2024ev_timer_stop (EV_P_ ev_timer *w) 2262ev_timer_stop (EV_P_ ev_timer *w)
2025{ 2263{
2026 clear_pending (EV_A_ (W)w); 2264 clear_pending (EV_A_ (W)w);
2027 if (expect_false (!ev_is_active (w))) 2265 if (expect_false (!ev_is_active (w)))
2028 return; 2266 return;
2029 2267
2268 EV_FREQUENT_CHECK;
2269
2030 { 2270 {
2031 int active = ev_active (w); 2271 int active = ev_active (w);
2032 2272
2033 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2273 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034 2274
2275 --timercnt;
2276
2035 if (expect_true (active < timercnt + HEAP0 - 1)) 2277 if (expect_true (active < timercnt + HEAP0))
2036 { 2278 {
2037 timers [active] = timers [timercnt + HEAP0 - 1]; 2279 timers [active] = timers [timercnt + HEAP0];
2038 adjustheap (timers, timercnt, active); 2280 adjustheap (timers, timercnt, active);
2039 } 2281 }
2040
2041 --timercnt;
2042 } 2282 }
2283
2284 EV_FREQUENT_CHECK;
2043 2285
2044 ev_at (w) -= mn_now; 2286 ev_at (w) -= mn_now;
2045 2287
2046 ev_stop (EV_A_ (W)w); 2288 ev_stop (EV_A_ (W)w);
2047} 2289}
2048 2290
2049void noinline 2291void noinline
2050ev_timer_again (EV_P_ ev_timer *w) 2292ev_timer_again (EV_P_ ev_timer *w)
2051{ 2293{
2294 EV_FREQUENT_CHECK;
2295
2052 if (ev_is_active (w)) 2296 if (ev_is_active (w))
2053 { 2297 {
2054 if (w->repeat) 2298 if (w->repeat)
2055 { 2299 {
2056 ev_at (w) = mn_now + w->repeat; 2300 ev_at (w) = mn_now + w->repeat;
2057 ANHE_at_set (timers [ev_active (w)]); 2301 ANHE_at_cache (timers [ev_active (w)]);
2058 adjustheap (timers, timercnt, ev_active (w)); 2302 adjustheap (timers, timercnt, ev_active (w));
2059 } 2303 }
2060 else 2304 else
2061 ev_timer_stop (EV_A_ w); 2305 ev_timer_stop (EV_A_ w);
2062 } 2306 }
2063 else if (w->repeat) 2307 else if (w->repeat)
2064 { 2308 {
2065 ev_at (w) = w->repeat; 2309 ev_at (w) = w->repeat;
2066 ev_timer_start (EV_A_ w); 2310 ev_timer_start (EV_A_ w);
2067 } 2311 }
2312
2313 EV_FREQUENT_CHECK;
2068} 2314}
2069 2315
2070#if EV_PERIODIC_ENABLE 2316#if EV_PERIODIC_ENABLE
2071void noinline 2317void noinline
2072ev_periodic_start (EV_P_ ev_periodic *w) 2318ev_periodic_start (EV_P_ ev_periodic *w)
… …
2076 2322
2077 if (w->reschedule_cb) 2323 if (w->reschedule_cb)
2078 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2324 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079 else if (w->interval) 2325 else if (w->interval)
2080 { 2326 {
2081 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.));
2082 /* 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 */
2083 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;
2084 } 2330 }
2085 else 2331 else
2086 ev_at (w) = w->offset; 2332 ev_at (w) = w->offset;
2087 2333
2334 EV_FREQUENT_CHECK;
2335
2336 ++periodiccnt;
2088 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2337 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2338 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2339 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2340 ANHE_at_cache (periodics [ev_active (w)]);
2091 upheap (periodics, ev_active (w)); 2341 upheap (periodics, ev_active (w));
2092 2342
2343 EV_FREQUENT_CHECK;
2344
2093 /*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));*/
2094} 2346}
2095 2347
2096void noinline 2348void noinline
2097ev_periodic_stop (EV_P_ ev_periodic *w) 2349ev_periodic_stop (EV_P_ ev_periodic *w)
2098{ 2350{
2099 clear_pending (EV_A_ (W)w); 2351 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w))) 2352 if (expect_false (!ev_is_active (w)))
2101 return; 2353 return;
2102 2354
2355 EV_FREQUENT_CHECK;
2356
2103 { 2357 {
2104 int active = ev_active (w); 2358 int active = ev_active (w);
2105 2359
2106 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2360 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107 2361
2362 --periodiccnt;
2363
2108 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2364 if (expect_true (active < periodiccnt + HEAP0))
2109 { 2365 {
2110 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2366 periodics [active] = periodics [periodiccnt + HEAP0];
2111 adjustheap (periodics, periodiccnt, active); 2367 adjustheap (periodics, periodiccnt, active);
2112 } 2368 }
2113
2114 --periodiccnt;
2115 } 2369 }
2370
2371 EV_FREQUENT_CHECK;
2116 2372
2117 ev_stop (EV_A_ (W)w); 2373 ev_stop (EV_A_ (W)w);
2118} 2374}
2119 2375
2120void noinline 2376void noinline
… …
2132 2388
2133void noinline 2389void noinline
2134ev_signal_start (EV_P_ ev_signal *w) 2390ev_signal_start (EV_P_ ev_signal *w)
2135{ 2391{
2136#if EV_MULTIPLICITY 2392#if EV_MULTIPLICITY
2137 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));
2138#endif 2394#endif
2139 if (expect_false (ev_is_active (w))) 2395 if (expect_false (ev_is_active (w)))
2140 return; 2396 return;
2141 2397
2142 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));
2143 2399
2144 evpipe_init (EV_A); 2400 evpipe_init (EV_A);
2401
2402 EV_FREQUENT_CHECK;
2145 2403
2146 { 2404 {
2147#ifndef _WIN32 2405#ifndef _WIN32
2148 sigset_t full, prev; 2406 sigset_t full, prev;
2149 sigfillset (&full); 2407 sigfillset (&full);
2150 sigprocmask (SIG_SETMASK, &full, &prev); 2408 sigprocmask (SIG_SETMASK, &full, &prev);
2151#endif 2409#endif
2152 2410
2153 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2154 2412
2155#ifndef _WIN32 2413#ifndef _WIN32
2156 sigprocmask (SIG_SETMASK, &prev, 0); 2414 sigprocmask (SIG_SETMASK, &prev, 0);
2157#endif 2415#endif
2158 } 2416 }
… …
2170 sigfillset (&sa.sa_mask); 2428 sigfillset (&sa.sa_mask);
2171 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 */
2172 sigaction (w->signum, &sa, 0); 2430 sigaction (w->signum, &sa, 0);
2173#endif 2431#endif
2174 } 2432 }
2433
2434 EV_FREQUENT_CHECK;
2175} 2435}
2176 2436
2177void noinline 2437void noinline
2178ev_signal_stop (EV_P_ ev_signal *w) 2438ev_signal_stop (EV_P_ ev_signal *w)
2179{ 2439{
2180 clear_pending (EV_A_ (W)w); 2440 clear_pending (EV_A_ (W)w);
2181 if (expect_false (!ev_is_active (w))) 2441 if (expect_false (!ev_is_active (w)))
2182 return; 2442 return;
2183 2443
2444 EV_FREQUENT_CHECK;
2445
2184 wlist_del (&signals [w->signum - 1].head, (WL)w); 2446 wlist_del (&signals [w->signum - 1].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2447 ev_stop (EV_A_ (W)w);
2186 2448
2187 if (!signals [w->signum - 1].head) 2449 if (!signals [w->signum - 1].head)
2188 signal (w->signum, SIG_DFL); 2450 signal (w->signum, SIG_DFL);
2451
2452 EV_FREQUENT_CHECK;
2189} 2453}
2190 2454
2191void 2455void
2192ev_child_start (EV_P_ ev_child *w) 2456ev_child_start (EV_P_ ev_child *w)
2193{ 2457{
2194#if EV_MULTIPLICITY 2458#if EV_MULTIPLICITY
2195 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));
2196#endif 2460#endif
2197 if (expect_false (ev_is_active (w))) 2461 if (expect_false (ev_is_active (w)))
2198 return; 2462 return;
2199 2463
2464 EV_FREQUENT_CHECK;
2465
2200 ev_start (EV_A_ (W)w, 1); 2466 ev_start (EV_A_ (W)w, 1);
2201 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;
2202} 2470}
2203 2471
2204void 2472void
2205ev_child_stop (EV_P_ ev_child *w) 2473ev_child_stop (EV_P_ ev_child *w)
2206{ 2474{
2207 clear_pending (EV_A_ (W)w); 2475 clear_pending (EV_A_ (W)w);
2208 if (expect_false (!ev_is_active (w))) 2476 if (expect_false (!ev_is_active (w)))
2209 return; 2477 return;
2210 2478
2479 EV_FREQUENT_CHECK;
2480
2211 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212 ev_stop (EV_A_ (W)w); 2482 ev_stop (EV_A_ (W)w);
2483
2484 EV_FREQUENT_CHECK;
2213} 2485}
2214 2486
2215#if EV_STAT_ENABLE 2487#if EV_STAT_ENABLE
2216 2488
2217# ifdef _WIN32 2489# ifdef _WIN32
2218# undef lstat 2490# undef lstat
2219# define lstat(a,b) _stati64 (a,b) 2491# define lstat(a,b) _stati64 (a,b)
2220# endif 2492# endif
2221 2493
2222#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 */
2223#define MIN_STAT_INTERVAL 0.1074891 2496#define MIN_STAT_INTERVAL 0.1074891
2224 2497
2225static 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);
2226 2499
2227#if EV_USE_INOTIFY 2500#if EV_USE_INOTIFY
2228# define EV_INOTIFY_BUFSIZE 8192 2501# define EV_INOTIFY_BUFSIZE 8192
… …
2232{ 2505{
2233 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);
2234 2507
2235 if (w->wd < 0) 2508 if (w->wd < 0)
2236 { 2509 {
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2237 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 */
2238 2512
2239 /* monitor some parent directory for speedup hints */ 2513 /* monitor some parent directory for speedup hints */
2240 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2241 /* but an efficiency issue only */ 2515 /* but an efficiency issue only */
2242 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243 { 2517 {
2244 char path [4096]; 2518 char path [4096];
2245 strcpy (path, w->path); 2519 strcpy (path, w->path);
… …
2249 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2523 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2524 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251 2525
2252 char *pend = strrchr (path, '/'); 2526 char *pend = strrchr (path, '/');
2253 2527
2254 if (!pend) 2528 if (!pend || pend == path)
2255 break; /* whoops, no '/', complain to your admin */ 2529 break;
2256 2530
2257 *pend = 0; 2531 *pend = 0;
2258 w->wd = inotify_add_watch (fs_fd, path, mask); 2532 w->wd = inotify_add_watch (fs_fd, path, mask);
2259 } 2533 }
2260 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261 } 2535 }
2262 } 2536 }
2263 else
2264 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265 2537
2266 if (w->wd >= 0) 2538 if (w->wd >= 0)
2539 {
2267 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 }
2268} 2559}
2269 2560
2270static void noinline 2561static void noinline
2271infy_del (EV_P_ ev_stat *w) 2562infy_del (EV_P_ ev_stat *w)
2272{ 2563{
… …
2286 2577
2287static void noinline 2578static void noinline
2288infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289{ 2580{
2290 if (slot < 0) 2581 if (slot < 0)
2291 /* overflow, need to check for all hahs slots */ 2582 /* overflow, need to check for all hash slots */
2292 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293 infy_wd (EV_A_ slot, wd, ev); 2584 infy_wd (EV_A_ slot, wd, ev);
2294 else 2585 else
2295 { 2586 {
2296 WL w_; 2587 WL w_;
… …
2302 2593
2303 if (w->wd == wd || wd == -1) 2594 if (w->wd == wd || wd == -1)
2304 { 2595 {
2305 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306 { 2597 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307 w->wd = -1; 2599 w->wd = -1;
2308 infy_add (EV_A_ w); /* re-add, no matter what */ 2600 infy_add (EV_A_ w); /* re-add, no matter what */
2309 } 2601 }
2310 2602
2311 stat_timer_cb (EV_A_ &w->timer, 0); 2603 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2324 2616
2325 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)
2326 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2618 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2327} 2619}
2328 2620
2329void 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
2330infy_init (EV_P) 2645infy_init (EV_P)
2331{ 2646{
2332 if (fs_fd != -2) 2647 if (fs_fd != -2)
2333 return; 2648 return;
2649
2650 fs_fd = -1;
2651
2652 check_2625 (EV_A);
2334 2653
2335 fs_fd = inotify_init (); 2654 fs_fd = inotify_init ();
2336 2655
2337 if (fs_fd >= 0) 2656 if (fs_fd >= 0)
2338 { 2657 {
… …
2340 ev_set_priority (&fs_w, EV_MAXPRI); 2659 ev_set_priority (&fs_w, EV_MAXPRI);
2341 ev_io_start (EV_A_ &fs_w); 2660 ev_io_start (EV_A_ &fs_w);
2342 } 2661 }
2343} 2662}
2344 2663
2345void inline_size 2664inline_size void
2346infy_fork (EV_P) 2665infy_fork (EV_P)
2347{ 2666{
2348 int slot; 2667 int slot;
2349 2668
2350 if (fs_fd < 0) 2669 if (fs_fd < 0)
… …
2366 w->wd = -1; 2685 w->wd = -1;
2367 2686
2368 if (fs_fd >= 0) 2687 if (fs_fd >= 0)
2369 infy_add (EV_A_ w); /* re-add, no matter what */ 2688 infy_add (EV_A_ w); /* re-add, no matter what */
2370 else 2689 else
2371 ev_timer_start (EV_A_ &w->timer); 2690 ev_timer_again (EV_A_ &w->timer);
2372 } 2691 }
2373
2374 } 2692 }
2375} 2693}
2376 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)
2377#endif 2701#endif
2378 2702
2379void 2703void
2380ev_stat_stat (EV_P_ ev_stat *w) 2704ev_stat_stat (EV_P_ ev_stat *w)
2381{ 2705{
… …
2408 || w->prev.st_atime != w->attr.st_atime 2732 || w->prev.st_atime != w->attr.st_atime
2409 || w->prev.st_mtime != w->attr.st_mtime 2733 || w->prev.st_mtime != w->attr.st_mtime
2410 || w->prev.st_ctime != w->attr.st_ctime 2734 || w->prev.st_ctime != w->attr.st_ctime
2411 ) { 2735 ) {
2412 #if EV_USE_INOTIFY 2736 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0)
2738 {
2413 infy_del (EV_A_ w); 2739 infy_del (EV_A_ w);
2414 infy_add (EV_A_ w); 2740 infy_add (EV_A_ w);
2415 ev_stat_stat (EV_A_ w); /* avoid race... */ 2741 ev_stat_stat (EV_A_ w); /* avoid race... */
2742 }
2416 #endif 2743 #endif
2417 2744
2418 ev_feed_event (EV_A_ w, EV_STAT); 2745 ev_feed_event (EV_A_ w, EV_STAT);
2419 } 2746 }
2420} 2747}
… …
2423ev_stat_start (EV_P_ ev_stat *w) 2750ev_stat_start (EV_P_ ev_stat *w)
2424{ 2751{
2425 if (expect_false (ev_is_active (w))) 2752 if (expect_false (ev_is_active (w)))
2426 return; 2753 return;
2427 2754
2428 /* since we use memcmp, we need to clear any padding data etc. */
2429 memset (&w->prev, 0, sizeof (ev_statdata));
2430 memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432 ev_stat_stat (EV_A_ w); 2755 ev_stat_stat (EV_A_ w);
2433 2756
2757 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434 if (w->interval < MIN_STAT_INTERVAL) 2758 w->interval = MIN_STAT_INTERVAL;
2435 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436 2759
2437 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);
2438 ev_set_priority (&w->timer, ev_priority (w)); 2761 ev_set_priority (&w->timer, ev_priority (w));
2439 2762
2440#if EV_USE_INOTIFY 2763#if EV_USE_INOTIFY
2441 infy_init (EV_A); 2764 infy_init (EV_A);
2442 2765
2443 if (fs_fd >= 0) 2766 if (fs_fd >= 0)
2444 infy_add (EV_A_ w); 2767 infy_add (EV_A_ w);
2445 else 2768 else
2446#endif 2769#endif
2447 ev_timer_start (EV_A_ &w->timer); 2770 ev_timer_again (EV_A_ &w->timer);
2448 2771
2449 ev_start (EV_A_ (W)w, 1); 2772 ev_start (EV_A_ (W)w, 1);
2773
2774 EV_FREQUENT_CHECK;
2450} 2775}
2451 2776
2452void 2777void
2453ev_stat_stop (EV_P_ ev_stat *w) 2778ev_stat_stop (EV_P_ ev_stat *w)
2454{ 2779{
2455 clear_pending (EV_A_ (W)w); 2780 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 2781 if (expect_false (!ev_is_active (w)))
2457 return; 2782 return;
2458 2783
2784 EV_FREQUENT_CHECK;
2785
2459#if EV_USE_INOTIFY 2786#if EV_USE_INOTIFY
2460 infy_del (EV_A_ w); 2787 infy_del (EV_A_ w);
2461#endif 2788#endif
2462 ev_timer_stop (EV_A_ &w->timer); 2789 ev_timer_stop (EV_A_ &w->timer);
2463 2790
2464 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
2465} 2794}
2466#endif 2795#endif
2467 2796
2468#if EV_IDLE_ENABLE 2797#if EV_IDLE_ENABLE
2469void 2798void
… …
2471{ 2800{
2472 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2473 return; 2802 return;
2474 2803
2475 pri_adjust (EV_A_ (W)w); 2804 pri_adjust (EV_A_ (W)w);
2805
2806 EV_FREQUENT_CHECK;
2476 2807
2477 { 2808 {
2478 int active = ++idlecnt [ABSPRI (w)]; 2809 int active = ++idlecnt [ABSPRI (w)];
2479 2810
2480 ++idleall; 2811 ++idleall;
2481 ev_start (EV_A_ (W)w, active); 2812 ev_start (EV_A_ (W)w, active);
2482 2813
2483 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);
2484 idles [ABSPRI (w)][active - 1] = w; 2815 idles [ABSPRI (w)][active - 1] = w;
2485 } 2816 }
2817
2818 EV_FREQUENT_CHECK;
2486} 2819}
2487 2820
2488void 2821void
2489ev_idle_stop (EV_P_ ev_idle *w) 2822ev_idle_stop (EV_P_ ev_idle *w)
2490{ 2823{
2491 clear_pending (EV_A_ (W)w); 2824 clear_pending (EV_A_ (W)w);
2492 if (expect_false (!ev_is_active (w))) 2825 if (expect_false (!ev_is_active (w)))
2493 return; 2826 return;
2494 2827
2828 EV_FREQUENT_CHECK;
2829
2495 { 2830 {
2496 int active = ev_active (w); 2831 int active = ev_active (w);
2497 2832
2498 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2833 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2834 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500 2835
2501 ev_stop (EV_A_ (W)w); 2836 ev_stop (EV_A_ (W)w);
2502 --idleall; 2837 --idleall;
2503 } 2838 }
2839
2840 EV_FREQUENT_CHECK;
2504} 2841}
2505#endif 2842#endif
2506 2843
2507void 2844void
2508ev_prepare_start (EV_P_ ev_prepare *w) 2845ev_prepare_start (EV_P_ ev_prepare *w)
2509{ 2846{
2510 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2511 return; 2848 return;
2849
2850 EV_FREQUENT_CHECK;
2512 2851
2513 ev_start (EV_A_ (W)w, ++preparecnt); 2852 ev_start (EV_A_ (W)w, ++preparecnt);
2514 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2853 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515 prepares [preparecnt - 1] = w; 2854 prepares [preparecnt - 1] = w;
2855
2856 EV_FREQUENT_CHECK;
2516} 2857}
2517 2858
2518void 2859void
2519ev_prepare_stop (EV_P_ ev_prepare *w) 2860ev_prepare_stop (EV_P_ ev_prepare *w)
2520{ 2861{
2521 clear_pending (EV_A_ (W)w); 2862 clear_pending (EV_A_ (W)w);
2522 if (expect_false (!ev_is_active (w))) 2863 if (expect_false (!ev_is_active (w)))
2523 return; 2864 return;
2524 2865
2866 EV_FREQUENT_CHECK;
2867
2525 { 2868 {
2526 int active = ev_active (w); 2869 int active = ev_active (w);
2527 2870
2528 prepares [active - 1] = prepares [--preparecnt]; 2871 prepares [active - 1] = prepares [--preparecnt];
2529 ev_active (prepares [active - 1]) = active; 2872 ev_active (prepares [active - 1]) = active;
2530 } 2873 }
2531 2874
2532 ev_stop (EV_A_ (W)w); 2875 ev_stop (EV_A_ (W)w);
2876
2877 EV_FREQUENT_CHECK;
2533} 2878}
2534 2879
2535void 2880void
2536ev_check_start (EV_P_ ev_check *w) 2881ev_check_start (EV_P_ ev_check *w)
2537{ 2882{
2538 if (expect_false (ev_is_active (w))) 2883 if (expect_false (ev_is_active (w)))
2539 return; 2884 return;
2885
2886 EV_FREQUENT_CHECK;
2540 2887
2541 ev_start (EV_A_ (W)w, ++checkcnt); 2888 ev_start (EV_A_ (W)w, ++checkcnt);
2542 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2889 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543 checks [checkcnt - 1] = w; 2890 checks [checkcnt - 1] = w;
2891
2892 EV_FREQUENT_CHECK;
2544} 2893}
2545 2894
2546void 2895void
2547ev_check_stop (EV_P_ ev_check *w) 2896ev_check_stop (EV_P_ ev_check *w)
2548{ 2897{
2549 clear_pending (EV_A_ (W)w); 2898 clear_pending (EV_A_ (W)w);
2550 if (expect_false (!ev_is_active (w))) 2899 if (expect_false (!ev_is_active (w)))
2551 return; 2900 return;
2552 2901
2902 EV_FREQUENT_CHECK;
2903
2553 { 2904 {
2554 int active = ev_active (w); 2905 int active = ev_active (w);
2555 2906
2556 checks [active - 1] = checks [--checkcnt]; 2907 checks [active - 1] = checks [--checkcnt];
2557 ev_active (checks [active - 1]) = active; 2908 ev_active (checks [active - 1]) = active;
2558 } 2909 }
2559 2910
2560 ev_stop (EV_A_ (W)w); 2911 ev_stop (EV_A_ (W)w);
2912
2913 EV_FREQUENT_CHECK;
2561} 2914}
2562 2915
2563#if EV_EMBED_ENABLE 2916#if EV_EMBED_ENABLE
2564void noinline 2917void noinline
2565ev_embed_sweep (EV_P_ ev_embed *w) 2918ev_embed_sweep (EV_P_ ev_embed *w)
… …
2592 ev_loop (EV_A_ EVLOOP_NONBLOCK); 2945 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593 } 2946 }
2594 } 2947 }
2595} 2948}
2596 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
2597#if 0 2967#if 0
2598static void 2968static void
2599embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2969embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600{ 2970{
2601 ev_idle_stop (EV_A_ idle); 2971 ev_idle_stop (EV_A_ idle);
… …
2608 if (expect_false (ev_is_active (w))) 2978 if (expect_false (ev_is_active (w)))
2609 return; 2979 return;
2610 2980
2611 { 2981 {
2612 struct ev_loop *loop = w->other; 2982 struct ev_loop *loop = w->other;
2613 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 ()));
2614 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);
2615 } 2985 }
2986
2987 EV_FREQUENT_CHECK;
2616 2988
2617 ev_set_priority (&w->io, ev_priority (w)); 2989 ev_set_priority (&w->io, ev_priority (w));
2618 ev_io_start (EV_A_ &w->io); 2990 ev_io_start (EV_A_ &w->io);
2619 2991
2620 ev_prepare_init (&w->prepare, embed_prepare_cb); 2992 ev_prepare_init (&w->prepare, embed_prepare_cb);
2621 ev_set_priority (&w->prepare, EV_MINPRI); 2993 ev_set_priority (&w->prepare, EV_MINPRI);
2622 ev_prepare_start (EV_A_ &w->prepare); 2994 ev_prepare_start (EV_A_ &w->prepare);
2623 2995
2996 ev_fork_init (&w->fork, embed_fork_cb);
2997 ev_fork_start (EV_A_ &w->fork);
2998
2624 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 2999 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625 3000
2626 ev_start (EV_A_ (W)w, 1); 3001 ev_start (EV_A_ (W)w, 1);
3002
3003 EV_FREQUENT_CHECK;
2627} 3004}
2628 3005
2629void 3006void
2630ev_embed_stop (EV_P_ ev_embed *w) 3007ev_embed_stop (EV_P_ ev_embed *w)
2631{ 3008{
2632 clear_pending (EV_A_ (W)w); 3009 clear_pending (EV_A_ (W)w);
2633 if (expect_false (!ev_is_active (w))) 3010 if (expect_false (!ev_is_active (w)))
2634 return; 3011 return;
2635 3012
3013 EV_FREQUENT_CHECK;
3014
2636 ev_io_stop (EV_A_ &w->io); 3015 ev_io_stop (EV_A_ &w->io);
2637 ev_prepare_stop (EV_A_ &w->prepare); 3016 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork);
2638 3018
2639 ev_stop (EV_A_ (W)w); 3019 EV_FREQUENT_CHECK;
2640} 3020}
2641#endif 3021#endif
2642 3022
2643#if EV_FORK_ENABLE 3023#if EV_FORK_ENABLE
2644void 3024void
2645ev_fork_start (EV_P_ ev_fork *w) 3025ev_fork_start (EV_P_ ev_fork *w)
2646{ 3026{
2647 if (expect_false (ev_is_active (w))) 3027 if (expect_false (ev_is_active (w)))
2648 return; 3028 return;
3029
3030 EV_FREQUENT_CHECK;
2649 3031
2650 ev_start (EV_A_ (W)w, ++forkcnt); 3032 ev_start (EV_A_ (W)w, ++forkcnt);
2651 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3033 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652 forks [forkcnt - 1] = w; 3034 forks [forkcnt - 1] = w;
3035
3036 EV_FREQUENT_CHECK;
2653} 3037}
2654 3038
2655void 3039void
2656ev_fork_stop (EV_P_ ev_fork *w) 3040ev_fork_stop (EV_P_ ev_fork *w)
2657{ 3041{
2658 clear_pending (EV_A_ (W)w); 3042 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3043 if (expect_false (!ev_is_active (w)))
2660 return; 3044 return;
2661 3045
3046 EV_FREQUENT_CHECK;
3047
2662 { 3048 {
2663 int active = ev_active (w); 3049 int active = ev_active (w);
2664 3050
2665 forks [active - 1] = forks [--forkcnt]; 3051 forks [active - 1] = forks [--forkcnt];
2666 ev_active (forks [active - 1]) = active; 3052 ev_active (forks [active - 1]) = active;
2667 } 3053 }
2668 3054
2669 ev_stop (EV_A_ (W)w); 3055 ev_stop (EV_A_ (W)w);
3056
3057 EV_FREQUENT_CHECK;
2670} 3058}
2671#endif 3059#endif
2672 3060
2673#if EV_ASYNC_ENABLE 3061#if EV_ASYNC_ENABLE
2674void 3062void
… …
2676{ 3064{
2677 if (expect_false (ev_is_active (w))) 3065 if (expect_false (ev_is_active (w)))
2678 return; 3066 return;
2679 3067
2680 evpipe_init (EV_A); 3068 evpipe_init (EV_A);
3069
3070 EV_FREQUENT_CHECK;
2681 3071
2682 ev_start (EV_A_ (W)w, ++asynccnt); 3072 ev_start (EV_A_ (W)w, ++asynccnt);
2683 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3073 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684 asyncs [asynccnt - 1] = w; 3074 asyncs [asynccnt - 1] = w;
3075
3076 EV_FREQUENT_CHECK;
2685} 3077}
2686 3078
2687void 3079void
2688ev_async_stop (EV_P_ ev_async *w) 3080ev_async_stop (EV_P_ ev_async *w)
2689{ 3081{
2690 clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
2691 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
2692 return; 3084 return;
2693 3085
3086 EV_FREQUENT_CHECK;
3087
2694 { 3088 {
2695 int active = ev_active (w); 3089 int active = ev_active (w);
2696 3090
2697 asyncs [active - 1] = asyncs [--asynccnt]; 3091 asyncs [active - 1] = asyncs [--asynccnt];
2698 ev_active (asyncs [active - 1]) = active; 3092 ev_active (asyncs [active - 1]) = active;
2699 } 3093 }
2700 3094
2701 ev_stop (EV_A_ (W)w); 3095 ev_stop (EV_A_ (W)w);
3096
3097 EV_FREQUENT_CHECK;
2702} 3098}
2703 3099
2704void 3100void
2705ev_async_send (EV_P_ ev_async *w) 3101ev_async_send (EV_P_ ev_async *w)
2706{ 3102{
… …
2723once_cb (EV_P_ struct ev_once *once, int revents) 3119once_cb (EV_P_ struct ev_once *once, int revents)
2724{ 3120{
2725 void (*cb)(int revents, void *arg) = once->cb; 3121 void (*cb)(int revents, void *arg) = once->cb;
2726 void *arg = once->arg; 3122 void *arg = once->arg;
2727 3123
2728 ev_io_stop (EV_A_ &once->io); 3124 ev_io_stop (EV_A_ &once->io);
2729 ev_timer_stop (EV_A_ &once->to); 3125 ev_timer_stop (EV_A_ &once->to);
2730 ev_free (once); 3126 ev_free (once);
2731 3127
2732 cb (revents, arg); 3128 cb (revents, arg);
2733} 3129}
2734 3130
2735static void 3131static void
2736once_cb_io (EV_P_ ev_io *w, int revents) 3132once_cb_io (EV_P_ ev_io *w, int revents)
2737{ 3133{
2738 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));
2739} 3137}
2740 3138
2741static void 3139static void
2742once_cb_to (EV_P_ ev_timer *w, int revents) 3140once_cb_to (EV_P_ ev_timer *w, int revents)
2743{ 3141{
2744 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));
2745} 3145}
2746 3146
2747void 3147void
2748ev_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)
2749{ 3149{
… …
2771 ev_timer_set (&once->to, timeout, 0.); 3171 ev_timer_set (&once->to, timeout, 0.);
2772 ev_timer_start (EV_A_ &once->to); 3172 ev_timer_start (EV_A_ &once->to);
2773 } 3173 }
2774} 3174}
2775 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
2776#if EV_MULTIPLICITY 3284#if EV_MULTIPLICITY
2777 #include "ev_wrap.h" 3285 #include "ev_wrap.h"
2778#endif 3286#endif
2779 3287
2780#ifdef __cplusplus 3288#ifdef __cplusplus

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