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Comparing libev/ev.c (file contents):
Revision 1.236 by root, Wed May 7 14:46:22 2008 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 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# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
126# define EV_USE_EVENTFD 1 140# define EV_USE_EVENTFD 1
127# else 141# else
128# define EV_USE_EVENTFD 0 142# define EV_USE_EVENTFD 0
129# endif 143# endif
130# endif 144# endif
131 145
132#endif 146#endif
133 147
134#include <math.h> 148#include <math.h>
135#include <stdlib.h> 149#include <stdlib.h>
136#include <fcntl.h> 150#include <fcntl.h>
… …
154#ifndef _WIN32 168#ifndef _WIN32
155# include <sys/time.h> 169# include <sys/time.h>
156# include <sys/wait.h> 170# include <sys/wait.h>
157# include <unistd.h> 171# include <unistd.h>
158#else 172#else
173# include <io.h>
159# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 175# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
163# endif 178# endif
164#endif 179#endif
165 180
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 181/* this block tries to deduce configuration from header-defined symbols and defaults */
167 182
183#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1
186# else
187# define EV_USE_CLOCK_SYSCALL 0
188# endif
189#endif
190
168#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1
194# else
169# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
170#endif 197#endif
171 198
172#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 201#endif
175 202
176#ifndef EV_USE_NANOSLEEP 203#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1
206# else
177# define EV_USE_NANOSLEEP 0 207# define EV_USE_NANOSLEEP 0
208# endif
178#endif 209#endif
179 210
180#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
182#endif 213#endif
… …
235# else 266# else
236# define EV_USE_EVENTFD 0 267# define EV_USE_EVENTFD 0
237# endif 268# endif
238#endif 269#endif
239 270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 304
242#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 322# include <sys/select.h>
260# endif 323# endif
261#endif 324#endif
262 325
263#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
264# include <sys/inotify.h> 329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
265#endif 335#endif
266 336
267#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 338# include <winsock.h>
269#endif 339#endif
… …
279} 349}
280# endif 350# endif
281#endif 351#endif
282 352
283/**/ 353/**/
354
355#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
357#else
358# define EV_FREQUENT_CHECK do { } while (0)
359#endif
284 360
285/* 361/*
286 * This is used to avoid floating point rounding problems. 362 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 363 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 364 * to ensure progress, time-wise, even when rounding
… …
328typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
329 405
330#define ev_active(w) ((W)(w))->active 406#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 407#define ev_at(w) ((WT)(w))->at
332 408
333#if EV_USE_MONOTONIC 409#if EV_USE_REALTIME
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 410/* 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 */ 411/* giving it a reasonably high chance of working on typical architetcures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif
414
415#if EV_USE_MONOTONIC
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif 417#endif
338 418
339#ifdef _WIN32 419#ifdef _WIN32
340# include "ev_win32.c" 420# include "ev_win32.c"
… …
349{ 429{
350 syserr_cb = cb; 430 syserr_cb = cb;
351} 431}
352 432
353static void noinline 433static void noinline
354syserr (const char *msg) 434ev_syserr (const char *msg)
355{ 435{
356 if (!msg) 436 if (!msg)
357 msg = "(libev) system error"; 437 msg = "(libev) system error";
358 438
359 if (syserr_cb) 439 if (syserr_cb)
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
407 487
408/*****************************************************************************/ 488/*****************************************************************************/
409 489
490/* file descriptor info structure */
410typedef struct 491typedef struct
411{ 492{
412 WL head; 493 WL head;
413 unsigned char events; 494 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
415#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 502 SOCKET handle;
417#endif 503#endif
418} ANFD; 504} ANFD;
419 505
506/* stores the pending event set for a given watcher */
420typedef struct 507typedef struct
421{ 508{
422 W w; 509 W w;
423 int events; 510 int events; /* the pending event set for the given watcher */
424} ANPENDING; 511} ANPENDING;
425 512
426#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
427typedef struct 515typedef struct
428{ 516{
429 WL head; 517 WL head;
430} ANFS; 518} ANFS;
519#endif
520
521/* Heap Entry */
522#if EV_HEAP_CACHE_AT
523 /* a heap element */
524 typedef struct {
525 ev_tstamp at;
526 WT w;
527 } ANHE;
528
529 #define ANHE_w(he) (he).w /* access watcher, read-write */
530 #define ANHE_at(he) (he).at /* access cached at, read-only */
531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
532#else
533 /* a heap element */
534 typedef WT ANHE;
535
536 #define ANHE_w(he) (he)
537 #define ANHE_at(he) (he)->at
538 #define ANHE_at_cache(he)
431#endif 539#endif
432 540
433#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
434 542
435 struct ev_loop 543 struct ev_loop
… …
456 564
457#endif 565#endif
458 566
459/*****************************************************************************/ 567/*****************************************************************************/
460 568
569#ifndef EV_HAVE_EV_TIME
461ev_tstamp 570ev_tstamp
462ev_time (void) 571ev_time (void)
463{ 572{
464#if EV_USE_REALTIME 573#if EV_USE_REALTIME
574 if (expect_true (have_realtime))
575 {
465 struct timespec ts; 576 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 577 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 578 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 579 }
580#endif
581
469 struct timeval tv; 582 struct timeval tv;
470 gettimeofday (&tv, 0); 583 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 584 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 585}
586#endif
474 587
475ev_tstamp inline_size 588inline_size ev_tstamp
476get_clock (void) 589get_clock (void)
477{ 590{
478#if EV_USE_MONOTONIC 591#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 592 if (expect_true (have_monotonic))
480 { 593 {
… …
513 struct timeval tv; 626 struct timeval tv;
514 627
515 tv.tv_sec = (time_t)delay; 628 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517 630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */
518 select (0, 0, 0, 0, &tv); 634 select (0, 0, 0, 0, &tv);
519#endif 635#endif
520 } 636 }
521} 637}
522 638
523/*****************************************************************************/ 639/*****************************************************************************/
524 640
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 642
527int inline_size 643/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */
645inline_size int
528array_nextsize (int elem, int cur, int cnt) 646array_nextsize (int elem, int cur, int cnt)
529{ 647{
530 int ncur = cur + 1; 648 int ncur = cur + 1;
531 649
532 do 650 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 667array_realloc (int elem, void *base, int *cur, int cnt)
550{ 668{
551 *cur = array_nextsize (elem, *cur, cnt); 669 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 670 return ev_realloc (base, elem * *cur);
553} 671}
672
673#define array_init_zero(base,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 675
555#define array_needsize(type,base,cur,cnt,init) \ 676#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 677 if (expect_false ((cnt) > (cur))) \
557 { \ 678 { \
558 int ocur_ = (cur); \ 679 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 691 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 692 }
572#endif 693#endif
573 694
574#define array_free(stem, idx) \ 695#define array_free(stem, idx) \
575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576 697
577/*****************************************************************************/ 698/*****************************************************************************/
699
700/* dummy callback for pending events */
701static void noinline
702pendingcb (EV_P_ ev_prepare *w, int revents)
703{
704}
578 705
579void noinline 706void noinline
580ev_feed_event (EV_P_ void *w, int revents) 707ev_feed_event (EV_P_ void *w, int revents)
581{ 708{
582 W w_ = (W)w; 709 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 718 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 719 pendings [pri][w_->pending - 1].events = revents;
593 } 720 }
594} 721}
595 722
596void inline_speed 723inline_speed void
724feed_reverse (EV_P_ W w)
725{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
727 rfeeds [rfeedcnt++] = w;
728}
729
730inline_size void
731feed_reverse_done (EV_P_ int revents)
732{
733 do
734 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
735 while (rfeedcnt);
736}
737
738inline_speed void
597queue_events (EV_P_ W *events, int eventcnt, int type) 739queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 740{
599 int i; 741 int i;
600 742
601 for (i = 0; i < eventcnt; ++i) 743 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 744 ev_feed_event (EV_A_ events [i], type);
603} 745}
604 746
605/*****************************************************************************/ 747/*****************************************************************************/
606 748
607void inline_size 749inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 750fd_event (EV_P_ int fd, int revents)
622{ 751{
623 ANFD *anfd = anfds + fd; 752 ANFD *anfd = anfds + fd;
624 ev_io *w; 753 ev_io *w;
625 754
… …
637{ 766{
638 if (fd >= 0 && fd < anfdmax) 767 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 768 fd_event (EV_A_ fd, revents);
640} 769}
641 770
642void inline_size 771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */
773inline_size void
643fd_reify (EV_P) 774fd_reify (EV_P)
644{ 775{
645 int i; 776 int i;
646 777
647 for (i = 0; i < fdchangecnt; ++i) 778 for (i = 0; i < fdchangecnt; ++i)
… …
656 events |= (unsigned char)w->events; 787 events |= (unsigned char)w->events;
657 788
658#if EV_SELECT_IS_WINSOCKET 789#if EV_SELECT_IS_WINSOCKET
659 if (events) 790 if (events)
660 { 791 {
661 unsigned long argp; 792 unsigned long arg;
662 #ifdef EV_FD_TO_WIN32_HANDLE 793 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else 795 #else
665 anfd->handle = _get_osfhandle (fd); 796 anfd->handle = _get_osfhandle (fd);
666 #endif 797 #endif
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668 } 799 }
669#endif 800#endif
670 801
671 { 802 {
672 unsigned char o_events = anfd->events; 803 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify; 804 unsigned char o_reify = anfd->reify;
674 805
675 anfd->reify = 0; 806 anfd->reify = 0;
676 anfd->events = events; 807 anfd->events = events;
677 808
678 if (o_events != events || o_reify & EV_IOFDSET) 809 if (o_events != events || o_reify & EV__IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 810 backend_modify (EV_A_ fd, o_events, events);
680 } 811 }
681 } 812 }
682 813
683 fdchangecnt = 0; 814 fdchangecnt = 0;
684} 815}
685 816
686void inline_size 817/* something about the given fd changed */
818inline_size void
687fd_change (EV_P_ int fd, int flags) 819fd_change (EV_P_ int fd, int flags)
688{ 820{
689 unsigned char reify = anfds [fd].reify; 821 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 822 anfds [fd].reify |= flags;
691 823
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 828 fdchanges [fdchangecnt - 1] = fd;
697 } 829 }
698} 830}
699 831
700void inline_speed 832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void
701fd_kill (EV_P_ int fd) 834fd_kill (EV_P_ int fd)
702{ 835{
703 ev_io *w; 836 ev_io *w;
704 837
705 while ((w = (ev_io *)anfds [fd].head)) 838 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 840 ev_io_stop (EV_A_ w);
708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709 } 842 }
710} 843}
711 844
712int inline_size 845/* check whether the given fd is atcually valid, for error recovery */
846inline_size int
713fd_valid (int fd) 847fd_valid (int fd)
714{ 848{
715#ifdef _WIN32 849#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 850 return _get_osfhandle (fd) != -1;
717#else 851#else
… …
725{ 859{
726 int fd; 860 int fd;
727 861
728 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 863 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 864 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 865 fd_kill (EV_A_ fd);
732} 866}
733 867
734/* called on ENOMEM in select/poll to kill some fds and retry */ 868/* called on ENOMEM in select/poll to kill some fds and retry */
735static void noinline 869static void noinline
… …
753 887
754 for (fd = 0; fd < anfdmax; ++fd) 888 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 889 if (anfds [fd].events)
756 { 890 {
757 anfds [fd].events = 0; 891 anfds [fd].events = 0;
892 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 893 fd_change (EV_A_ fd, EV__IOFDSET | 1);
759 } 894 }
760} 895}
761 896
762/*****************************************************************************/ 897/*****************************************************************************/
898
899/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree.
903 */
763 904
764/* 905/*
765 * at the moment we allow libev the luxury of two heaps, 906 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 907 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 908 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 909 * the difference is about 5% with 50000+ watchers.
769 */ 910 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 911#if EV_USE_4HEAP
772 912
913#define DHEAP 4
773#define HEAP0 3 /* index of first element in heap */ 914#define HEAP0 (DHEAP - 1) /* index of first element in heap */
915#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
916#define UPHEAP_DONE(p,k) ((p) == (k))
774 917
775/* towards the root */ 918/* away from the root */
776void inline_speed 919inline_speed void
777upheap (WT *heap, int k) 920downheap (ANHE *heap, int N, int k)
778{ 921{
779 WT w = heap [k]; 922 ANHE he = heap [k];
923 ANHE *E = heap + N + HEAP0;
780 924
781 for (;;) 925 for (;;)
782 { 926 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
788 heap [k] = heap [p];
789 ev_active (heap [k]) = k;
790 k = p;
791 }
792
793 heap [k] = w;
794 ev_active (heap [k]) = k;
795}
796
797/* away from the root */
798void inline_speed
799downheap (WT *heap, int N, int k)
800{
801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
803
804 for (;;)
805 {
806 ev_tstamp minat; 927 ev_tstamp minat;
807 WT *minpos; 928 ANHE *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0; 929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809 930
810 // find minimum child 931 /* find minimum child */
811 if (expect_true (pos +3 < E)) 932 if (expect_true (pos + DHEAP - 1 < E))
812 { 933 {
813 /* fast path */
814 (minpos = pos + 0), (minat = (*minpos)->at); 934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
815 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
816 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 936 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
817 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 937 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 }
939 else if (pos < E)
940 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
942 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
943 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
944 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
818 } 945 }
819 else 946 else
820 {
821 /* slow path */
822 if (pos >= E)
823 break;
824 (minpos = pos + 0), (minat = (*minpos)->at);
825 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
826 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
827 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
828 }
829
830 if (w->at <= minat)
831 break; 947 break;
832 948
833 ev_active (*minpos) = k; 949 if (ANHE_at (he) <= minat)
950 break;
951
834 heap [k] = *minpos; 952 heap [k] = *minpos;
953 ev_active (ANHE_w (*minpos)) = k;
835 954
836 k = minpos - heap; 955 k = minpos - heap;
837 } 956 }
838 957
839 heap [k] = w; 958 heap [k] = he;
840 ev_active (heap [k]) = k; 959 ev_active (ANHE_w (he)) = k;
841} 960}
842 961
843#else // 4HEAP 962#else /* 4HEAP */
844 963
845#define HEAP0 1 964#define HEAP0 1
965#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p))
846 967
847/* towards the root */ 968/* away from the root */
848void inline_speed 969inline_speed void
849upheap (WT *heap, int k) 970downheap (ANHE *heap, int N, int k)
850{ 971{
851 WT w = heap [k]; 972 ANHE he = heap [k];
852 973
853 for (;;) 974 for (;;)
854 { 975 {
855 int p = k >> 1; 976 int c = k << 1;
856 977
857 /* maybe we could use a dummy element at heap [0]? */ 978 if (c > N + HEAP0 - 1)
858 if (!p || heap [p]->at <= w->at)
859 break; 979 break;
860 980
861 heap [k] = heap [p]; 981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862 ev_active (heap [k]) = k; 982 ? 1 : 0;
863 k = p;
864 }
865 983
866 heap [k] = w; 984 if (ANHE_at (he) <= ANHE_at (heap [c]))
867 ev_active (heap [k]) = k;
868}
869
870/* away from the root */
871void inline_speed
872downheap (WT *heap, int N, int k)
873{
874 WT w = heap [k];
875
876 for (;;)
877 {
878 int c = k << 1;
879
880 if (c > N)
881 break; 985 break;
882 986
883 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884 ? 1 : 0;
885
886 if (w->at <= heap [c]->at)
887 break;
888
889 heap [k] = heap [c]; 987 heap [k] = heap [c];
890 ((W)heap [k])->active = k; 988 ev_active (ANHE_w (heap [k])) = k;
891 989
892 k = c; 990 k = c;
893 } 991 }
894 992
895 heap [k] = w; 993 heap [k] = he;
994 ev_active (ANHE_w (he)) = k;
995}
996#endif
997
998/* towards the root */
999inline_speed void
1000upheap (ANHE *heap, int k)
1001{
1002 ANHE he = heap [k];
1003
1004 for (;;)
1005 {
1006 int p = HPARENT (k);
1007
1008 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1009 break;
1010
1011 heap [k] = heap [p];
896 ev_active (heap [k]) = k; 1012 ev_active (ANHE_w (heap [k])) = k;
897} 1013 k = p;
898#endif 1014 }
899 1015
900void inline_size 1016 heap [k] = he;
1017 ev_active (ANHE_w (he)) = k;
1018}
1019
1020/* move an element suitably so it is in a correct place */
1021inline_size void
901adjustheap (WT *heap, int N, int k) 1022adjustheap (ANHE *heap, int N, int k)
902{ 1023{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
903 upheap (heap, k); 1025 upheap (heap, k);
1026 else
904 downheap (heap, N, k); 1027 downheap (heap, N, k);
1028}
1029
1030/* rebuild the heap: this function is used only once and executed rarely */
1031inline_size void
1032reheap (ANHE *heap, int N)
1033{
1034 int i;
1035
1036 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1037 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1038 for (i = 0; i < N; ++i)
1039 upheap (heap, i + HEAP0);
905} 1040}
906 1041
907/*****************************************************************************/ 1042/*****************************************************************************/
908 1043
1044/* associate signal watchers to a signal signal */
909typedef struct 1045typedef struct
910{ 1046{
911 WL head; 1047 WL head;
912 EV_ATOMIC_T gotsig; 1048 EV_ATOMIC_T gotsig;
913} ANSIG; 1049} ANSIG;
… …
915static ANSIG *signals; 1051static ANSIG *signals;
916static int signalmax; 1052static int signalmax;
917 1053
918static EV_ATOMIC_T gotsig; 1054static EV_ATOMIC_T gotsig;
919 1055
920void inline_size
921signals_init (ANSIG *base, int count)
922{
923 while (count--)
924 {
925 base->head = 0;
926 base->gotsig = 0;
927
928 ++base;
929 }
930}
931
932/*****************************************************************************/ 1056/*****************************************************************************/
933 1057
934void inline_speed 1058/* used to prepare libev internal fd's */
1059/* this is not fork-safe */
1060inline_speed void
935fd_intern (int fd) 1061fd_intern (int fd)
936{ 1062{
937#ifdef _WIN32 1063#ifdef _WIN32
938 int arg = 1; 1064 unsigned long arg = 1;
939 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940#else 1066#else
941 fcntl (fd, F_SETFD, FD_CLOEXEC); 1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
942 fcntl (fd, F_SETFL, O_NONBLOCK); 1068 fcntl (fd, F_SETFL, O_NONBLOCK);
943#endif 1069#endif
944} 1070}
945 1071
946static void noinline 1072static void noinline
947evpipe_init (EV_P) 1073evpipe_init (EV_P)
948{ 1074{
949 if (!ev_is_active (&pipeev)) 1075 if (!ev_is_active (&pipe_w))
950 { 1076 {
951#if EV_USE_EVENTFD 1077#if EV_USE_EVENTFD
952 if ((evfd = eventfd (0, 0)) >= 0) 1078 if ((evfd = eventfd (0, 0)) >= 0)
953 { 1079 {
954 evpipe [0] = -1; 1080 evpipe [0] = -1;
955 fd_intern (evfd); 1081 fd_intern (evfd);
956 ev_io_set (&pipeev, evfd, EV_READ); 1082 ev_io_set (&pipe_w, evfd, EV_READ);
957 } 1083 }
958 else 1084 else
959#endif 1085#endif
960 { 1086 {
961 while (pipe (evpipe)) 1087 while (pipe (evpipe))
962 syserr ("(libev) error creating signal/async pipe"); 1088 ev_syserr ("(libev) error creating signal/async pipe");
963 1089
964 fd_intern (evpipe [0]); 1090 fd_intern (evpipe [0]);
965 fd_intern (evpipe [1]); 1091 fd_intern (evpipe [1]);
966 ev_io_set (&pipeev, evpipe [0], EV_READ); 1092 ev_io_set (&pipe_w, evpipe [0], EV_READ);
967 } 1093 }
968 1094
969 ev_io_start (EV_A_ &pipeev); 1095 ev_io_start (EV_A_ &pipe_w);
970 ev_unref (EV_A); /* watcher should not keep loop alive */ 1096 ev_unref (EV_A); /* watcher should not keep loop alive */
971 } 1097 }
972} 1098}
973 1099
974void inline_size 1100inline_size void
975evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976{ 1102{
977 if (!*flag) 1103 if (!*flag)
978 { 1104 {
979 int old_errno = errno; /* save errno because write might clobber it */ 1105 int old_errno = errno; /* save errno because write might clobber it */
… …
992 1118
993 errno = old_errno; 1119 errno = old_errno;
994 } 1120 }
995} 1121}
996 1122
1123/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */
997static void 1125static void
998pipecb (EV_P_ ev_io *iow, int revents) 1126pipecb (EV_P_ ev_io *iow, int revents)
999{ 1127{
1000#if EV_USE_EVENTFD 1128#if EV_USE_EVENTFD
1001 if (evfd >= 0) 1129 if (evfd >= 0)
… …
1057ev_feed_signal_event (EV_P_ int signum) 1185ev_feed_signal_event (EV_P_ int signum)
1058{ 1186{
1059 WL w; 1187 WL w;
1060 1188
1061#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
1062 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1063#endif 1191#endif
1064 1192
1065 --signum; 1193 --signum;
1066 1194
1067 if (signum < 0 || signum >= signalmax) 1195 if (signum < 0 || signum >= signalmax)
… …
1083 1211
1084#ifndef WIFCONTINUED 1212#ifndef WIFCONTINUED
1085# define WIFCONTINUED(status) 0 1213# define WIFCONTINUED(status) 0
1086#endif 1214#endif
1087 1215
1088void inline_speed 1216/* handle a single child status event */
1217inline_speed void
1089child_reap (EV_P_ int chain, int pid, int status) 1218child_reap (EV_P_ int chain, int pid, int status)
1090{ 1219{
1091 ev_child *w; 1220 ev_child *w;
1092 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093 1222
… …
1106 1235
1107#ifndef WCONTINUED 1236#ifndef WCONTINUED
1108# define WCONTINUED 0 1237# define WCONTINUED 0
1109#endif 1238#endif
1110 1239
1240/* called on sigchld etc., calls waitpid */
1111static void 1241static void
1112childcb (EV_P_ ev_signal *sw, int revents) 1242childcb (EV_P_ ev_signal *sw, int revents)
1113{ 1243{
1114 int pid, status; 1244 int pid, status;
1115 1245
… …
1196 /* kqueue is borked on everything but netbsd apparently */ 1326 /* kqueue is borked on everything but netbsd apparently */
1197 /* it usually doesn't work correctly on anything but sockets and pipes */ 1327 /* it usually doesn't work correctly on anything but sockets and pipes */
1198 flags &= ~EVBACKEND_KQUEUE; 1328 flags &= ~EVBACKEND_KQUEUE;
1199#endif 1329#endif
1200#ifdef __APPLE__ 1330#ifdef __APPLE__
1201 // flags &= ~EVBACKEND_KQUEUE; for documentation 1331 /* only select works correctly on that "unix-certified" platform */
1202 flags &= ~EVBACKEND_POLL; 1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1203#endif 1334#endif
1204 1335
1205 return flags; 1336 return flags;
1206} 1337}
1207 1338
… …
1227ev_loop_count (EV_P) 1358ev_loop_count (EV_P)
1228{ 1359{
1229 return loop_count; 1360 return loop_count;
1230} 1361}
1231 1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{
1366 return loop_depth;
1367}
1368
1232void 1369void
1233ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234{ 1371{
1235 io_blocktime = interval; 1372 io_blocktime = interval;
1236} 1373}
… …
1239ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240{ 1377{
1241 timeout_blocktime = interval; 1378 timeout_blocktime = interval;
1242} 1379}
1243 1380
1381/* initialise a loop structure, must be zero-initialised */
1244static void noinline 1382static void noinline
1245loop_init (EV_P_ unsigned int flags) 1383loop_init (EV_P_ unsigned int flags)
1246{ 1384{
1247 if (!backend) 1385 if (!backend)
1248 { 1386 {
1387#if EV_USE_REALTIME
1388 if (!have_realtime)
1389 {
1390 struct timespec ts;
1391
1392 if (!clock_gettime (CLOCK_REALTIME, &ts))
1393 have_realtime = 1;
1394 }
1395#endif
1396
1249#if EV_USE_MONOTONIC 1397#if EV_USE_MONOTONIC
1398 if (!have_monotonic)
1250 { 1399 {
1251 struct timespec ts; 1400 struct timespec ts;
1401
1252 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253 have_monotonic = 1; 1403 have_monotonic = 1;
1254 } 1404 }
1255#endif 1405#endif
1256 1406
1257 ev_rt_now = ev_time (); 1407 ev_rt_now = ev_time ();
1258 mn_now = get_clock (); 1408 mn_now = get_clock ();
1259 now_floor = mn_now; 1409 now_floor = mn_now;
… …
1296#endif 1446#endif
1297#if EV_USE_SELECT 1447#if EV_USE_SELECT
1298 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299#endif 1449#endif
1300 1450
1451 ev_prepare_init (&pending_w, pendingcb);
1452
1301 ev_init (&pipeev, pipecb); 1453 ev_init (&pipe_w, pipecb);
1302 ev_set_priority (&pipeev, EV_MAXPRI); 1454 ev_set_priority (&pipe_w, EV_MAXPRI);
1303 } 1455 }
1304} 1456}
1305 1457
1458/* free up a loop structure */
1306static void noinline 1459static void noinline
1307loop_destroy (EV_P) 1460loop_destroy (EV_P)
1308{ 1461{
1309 int i; 1462 int i;
1310 1463
1311 if (ev_is_active (&pipeev)) 1464 if (ev_is_active (&pipe_w))
1312 { 1465 {
1313 ev_ref (EV_A); /* signal watcher */ 1466 ev_ref (EV_A); /* signal watcher */
1314 ev_io_stop (EV_A_ &pipeev); 1467 ev_io_stop (EV_A_ &pipe_w);
1315 1468
1316#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1317 if (evfd >= 0) 1470 if (evfd >= 0)
1318 close (evfd); 1471 close (evfd);
1319#endif 1472#endif
… …
1358 } 1511 }
1359 1512
1360 ev_free (anfds); anfdmax = 0; 1513 ev_free (anfds); anfdmax = 0;
1361 1514
1362 /* have to use the microsoft-never-gets-it-right macro */ 1515 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY);
1363 array_free (fdchange, EMPTY); 1517 array_free (fdchange, EMPTY);
1364 array_free (timer, EMPTY); 1518 array_free (timer, EMPTY);
1365#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
1366 array_free (periodic, EMPTY); 1520 array_free (periodic, EMPTY);
1367#endif 1521#endif
… …
1376 1530
1377 backend = 0; 1531 backend = 0;
1378} 1532}
1379 1533
1380#if EV_USE_INOTIFY 1534#if EV_USE_INOTIFY
1381void inline_size infy_fork (EV_P); 1535inline_size void infy_fork (EV_P);
1382#endif 1536#endif
1383 1537
1384void inline_size 1538inline_size void
1385loop_fork (EV_P) 1539loop_fork (EV_P)
1386{ 1540{
1387#if EV_USE_PORT 1541#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389#endif 1543#endif
… …
1395#endif 1549#endif
1396#if EV_USE_INOTIFY 1550#if EV_USE_INOTIFY
1397 infy_fork (EV_A); 1551 infy_fork (EV_A);
1398#endif 1552#endif
1399 1553
1400 if (ev_is_active (&pipeev)) 1554 if (ev_is_active (&pipe_w))
1401 { 1555 {
1402 /* this "locks" the handlers against writing to the pipe */ 1556 /* this "locks" the handlers against writing to the pipe */
1403 /* while we modify the fd vars */ 1557 /* while we modify the fd vars */
1404 gotsig = 1; 1558 gotsig = 1;
1405#if EV_ASYNC_ENABLE 1559#if EV_ASYNC_ENABLE
1406 gotasync = 1; 1560 gotasync = 1;
1407#endif 1561#endif
1408 1562
1409 ev_ref (EV_A); 1563 ev_ref (EV_A);
1410 ev_io_stop (EV_A_ &pipeev); 1564 ev_io_stop (EV_A_ &pipe_w);
1411 1565
1412#if EV_USE_EVENTFD 1566#if EV_USE_EVENTFD
1413 if (evfd >= 0) 1567 if (evfd >= 0)
1414 close (evfd); 1568 close (evfd);
1415#endif 1569#endif
… …
1420 close (evpipe [1]); 1574 close (evpipe [1]);
1421 } 1575 }
1422 1576
1423 evpipe_init (EV_A); 1577 evpipe_init (EV_A);
1424 /* now iterate over everything, in case we missed something */ 1578 /* now iterate over everything, in case we missed something */
1425 pipecb (EV_A_ &pipeev, EV_READ); 1579 pipecb (EV_A_ &pipe_w, EV_READ);
1426 } 1580 }
1427 1581
1428 postfork = 0; 1582 postfork = 0;
1429} 1583}
1430 1584
1431#if EV_MULTIPLICITY 1585#if EV_MULTIPLICITY
1586
1432struct ev_loop * 1587struct ev_loop *
1433ev_loop_new (unsigned int flags) 1588ev_loop_new (unsigned int flags)
1434{ 1589{
1435 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436 1591
… …
1454void 1609void
1455ev_loop_fork (EV_P) 1610ev_loop_fork (EV_P)
1456{ 1611{
1457 postfork = 1; /* must be in line with ev_default_fork */ 1612 postfork = 1; /* must be in line with ev_default_fork */
1458} 1613}
1614
1615#if EV_VERIFY
1616static void noinline
1617verify_watcher (EV_P_ W w)
1618{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620
1621 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623}
1624
1625static void noinline
1626verify_heap (EV_P_ ANHE *heap, int N)
1627{
1628 int i;
1629
1630 for (i = HEAP0; i < N + HEAP0; ++i)
1631 {
1632 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1633 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1634 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1635
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 }
1638}
1639
1640static void noinline
1641array_verify (EV_P_ W *ws, int cnt)
1642{
1643 while (cnt--)
1644 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]);
1647 }
1648}
1649#endif
1650
1651void
1652ev_loop_verify (EV_P)
1653{
1654#if EV_VERIFY
1655 int i;
1656 WL w;
1657
1658 assert (activecnt >= -1);
1659
1660 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663
1664 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i)
1666 for (w = anfds [i].head; w; w = w->next)
1667 {
1668 verify_watcher (EV_A_ (W)w);
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 }
1672
1673 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt);
1675
1676#if EV_PERIODIC_ENABLE
1677 assert (periodicmax >= periodiccnt);
1678 verify_heap (EV_A_ periodics, periodiccnt);
1679#endif
1680
1681 for (i = NUMPRI; i--; )
1682 {
1683 assert (pendingmax [i] >= pendingcnt [i]);
1684#if EV_IDLE_ENABLE
1685 assert (idleall >= 0);
1686 assert (idlemax [i] >= idlecnt [i]);
1687 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1688#endif
1689 }
1690
1691#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif
1695
1696#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif
1700
1701 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt);
1703
1704 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt);
1706
1707# if 0
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1459#endif 1710# endif
1711#endif
1712}
1713
1714#endif /* multiplicity */
1460 1715
1461#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
1462struct ev_loop * 1717struct ev_loop *
1463ev_default_loop_init (unsigned int flags) 1718ev_default_loop_init (unsigned int flags)
1464#else 1719#else
… …
1497{ 1752{
1498#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
1499 struct ev_loop *loop = ev_default_loop_ptr; 1754 struct ev_loop *loop = ev_default_loop_ptr;
1500#endif 1755#endif
1501 1756
1757 ev_default_loop_ptr = 0;
1758
1502#ifndef _WIN32 1759#ifndef _WIN32
1503 ev_ref (EV_A); /* child watcher */ 1760 ev_ref (EV_A); /* child watcher */
1504 ev_signal_stop (EV_A_ &childev); 1761 ev_signal_stop (EV_A_ &childev);
1505#endif 1762#endif
1506 1763
… …
1512{ 1769{
1513#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1514 struct ev_loop *loop = ev_default_loop_ptr; 1771 struct ev_loop *loop = ev_default_loop_ptr;
1515#endif 1772#endif
1516 1773
1517 if (backend)
1518 postfork = 1; /* must be in line with ev_loop_fork */ 1774 postfork = 1; /* must be in line with ev_loop_fork */
1519} 1775}
1520 1776
1521/*****************************************************************************/ 1777/*****************************************************************************/
1522 1778
1523void 1779void
1524ev_invoke (EV_P_ void *w, int revents) 1780ev_invoke (EV_P_ void *w, int revents)
1525{ 1781{
1526 EV_CB_INVOKE ((W)w, revents); 1782 EV_CB_INVOKE ((W)w, revents);
1527} 1783}
1528 1784
1529void inline_speed 1785inline_speed void
1530call_pending (EV_P) 1786call_pending (EV_P)
1531{ 1787{
1532 int pri; 1788 int pri;
1533 1789
1534 for (pri = NUMPRI; pri--; ) 1790 for (pri = NUMPRI; pri--; )
1535 while (pendingcnt [pri]) 1791 while (pendingcnt [pri])
1536 { 1792 {
1537 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538 1794
1539 if (expect_true (p->w))
1540 {
1541 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1542 1797
1543 p->w->pending = 0; 1798 p->w->pending = 0;
1544 EV_CB_INVOKE (p->w, p->events); 1799 EV_CB_INVOKE (p->w, p->events);
1545 } 1800 EV_FREQUENT_CHECK;
1546 } 1801 }
1547} 1802}
1548 1803
1549#if EV_IDLE_ENABLE 1804#if EV_IDLE_ENABLE
1550void inline_size 1805/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */
1807inline_size void
1551idle_reify (EV_P) 1808idle_reify (EV_P)
1552{ 1809{
1553 if (expect_false (idleall)) 1810 if (expect_false (idleall))
1554 { 1811 {
1555 int pri; 1812 int pri;
… …
1567 } 1824 }
1568 } 1825 }
1569} 1826}
1570#endif 1827#endif
1571 1828
1572void inline_size 1829/* make timers pending */
1830inline_size void
1573timers_reify (EV_P) 1831timers_reify (EV_P)
1574{ 1832{
1833 EV_FREQUENT_CHECK;
1834
1575 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 1835 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576 { 1836 {
1577 ev_timer *w = (ev_timer *)timers [HEAP0]; 1837 do
1578
1579 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581 /* first reschedule or stop timer */
1582 if (w->repeat)
1583 { 1838 {
1839 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1840
1841 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1842
1843 /* first reschedule or stop timer */
1844 if (w->repeat)
1845 {
1846 ev_at (w) += w->repeat;
1847 if (ev_at (w) < mn_now)
1848 ev_at (w) = mn_now;
1849
1584 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1850 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585 1851
1586 ev_at (w) += w->repeat; 1852 ANHE_at_cache (timers [HEAP0]);
1587 if (ev_at (w) < mn_now)
1588 ev_at (w) = mn_now;
1589
1590 downheap (timers, timercnt, HEAP0); 1853 downheap (timers, timercnt, HEAP0);
1854 }
1855 else
1856 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1857
1858 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w);
1591 } 1860 }
1592 else 1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594 1862
1595 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1863 feed_reverse_done (EV_A_ EV_TIMEOUT);
1596 } 1864 }
1597} 1865}
1598 1866
1599#if EV_PERIODIC_ENABLE 1867#if EV_PERIODIC_ENABLE
1600void inline_size 1868/* make periodics pending */
1869inline_size void
1601periodics_reify (EV_P) 1870periodics_reify (EV_P)
1602{ 1871{
1872 EV_FREQUENT_CHECK;
1873
1603 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604 { 1875 {
1605 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 1876 int feed_count = 0;
1606 1877
1607 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1878 do
1608
1609 /* first reschedule or stop timer */
1610 if (w->reschedule_cb)
1611 { 1879 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1883
1884 /* first reschedule or stop timer */
1885 if (w->reschedule_cb)
1886 {
1612 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 1887 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1888
1613 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 1889 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1890
1891 ANHE_at_cache (periodics [HEAP0]);
1614 downheap (periodics, periodiccnt, 1); 1892 downheap (periodics, periodiccnt, HEAP0);
1893 }
1894 else if (w->interval)
1895 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0);
1912 }
1913 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1915
1916 EV_FREQUENT_CHECK;
1917 feed_reverse (EV_A_ (W)w);
1615 } 1918 }
1616 else if (w->interval) 1919 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617 {
1618 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621 downheap (periodics, periodiccnt, HEAP0);
1622 }
1623 else
1624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625 1920
1626 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1921 feed_reverse_done (EV_A_ EV_PERIODIC);
1627 } 1922 }
1628} 1923}
1629 1924
1925/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630static void noinline 1927static void noinline
1631periodics_reschedule (EV_P) 1928periodics_reschedule (EV_P)
1632{ 1929{
1633 int i; 1930 int i;
1634 1931
1635 /* adjust periodics after time jump */ 1932 /* adjust periodics after time jump */
1636 for (i = 1; i <= periodiccnt; ++i) 1933 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637 { 1934 {
1638 ev_periodic *w = (ev_periodic *)periodics [i]; 1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639 1936
1640 if (w->reschedule_cb) 1937 if (w->reschedule_cb)
1641 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642 else if (w->interval) 1939 else if (w->interval)
1643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1941
1942 ANHE_at_cache (periodics [i]);
1943 }
1944
1945 reheap (periodics, periodiccnt);
1946}
1947#endif
1948
1949/* adjust all timers by a given offset */
1950static void noinline
1951timers_reschedule (EV_P_ ev_tstamp adjust)
1952{
1953 int i;
1954
1955 for (i = 0; i < timercnt; ++i)
1644 } 1956 {
1645 1957 ANHE *he = timers + i + HEAP0;
1646 /* now rebuild the heap */ 1958 ANHE_w (*he)->at += adjust;
1647 for (i = periodiccnt >> 1; --i; ) 1959 ANHE_at_cache (*he);
1648 downheap (periodics, periodiccnt, i + HEAP0); 1960 }
1649} 1961}
1650#endif
1651 1962
1652void inline_speed 1963/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */
1965inline_speed void
1653time_update (EV_P_ ev_tstamp max_block) 1966time_update (EV_P_ ev_tstamp max_block)
1654{ 1967{
1655 int i;
1656
1657#if EV_USE_MONOTONIC 1968#if EV_USE_MONOTONIC
1658 if (expect_true (have_monotonic)) 1969 if (expect_true (have_monotonic))
1659 { 1970 {
1971 int i;
1660 ev_tstamp odiff = rtmn_diff; 1972 ev_tstamp odiff = rtmn_diff;
1661 1973
1662 mn_now = get_clock (); 1974 mn_now = get_clock ();
1663 1975
1664 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1976 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1690 ev_rt_now = ev_time (); 2002 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2003 mn_now = get_clock ();
1692 now_floor = mn_now; 2004 now_floor = mn_now;
1693 } 2005 }
1694 2006
2007 /* no timer adjustment, as the monotonic clock doesn't jump */
2008 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695# if EV_PERIODIC_ENABLE 2009# if EV_PERIODIC_ENABLE
1696 periodics_reschedule (EV_A); 2010 periodics_reschedule (EV_A);
1697# endif 2011# endif
1698 /* no timer adjustment, as the monotonic clock doesn't jump */
1699 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700 } 2012 }
1701 else 2013 else
1702#endif 2014#endif
1703 { 2015 {
1704 ev_rt_now = ev_time (); 2016 ev_rt_now = ev_time ();
1705 2017
1706 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2018 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707 { 2019 {
2020 /* adjust timers. this is easy, as the offset is the same for all of them */
2021 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708#if EV_PERIODIC_ENABLE 2022#if EV_PERIODIC_ENABLE
1709 periodics_reschedule (EV_A); 2023 periodics_reschedule (EV_A);
1710#endif 2024#endif
1711 /* adjust timers. this is easy, as the offset is the same for all of them */
1712 for (i = 1; i <= timercnt; ++i)
1713 ev_at (timers [i]) += ev_rt_now - mn_now;
1714 } 2025 }
1715 2026
1716 mn_now = ev_rt_now; 2027 mn_now = ev_rt_now;
1717 } 2028 }
1718} 2029}
1719 2030
1720void 2031void
1721ev_ref (EV_P)
1722{
1723 ++activecnt;
1724}
1725
1726void
1727ev_unref (EV_P)
1728{
1729 --activecnt;
1730}
1731
1732static int loop_done;
1733
1734void
1735ev_loop (EV_P_ int flags) 2032ev_loop (EV_P_ int flags)
1736{ 2033{
2034 ++loop_depth;
2035
1737 loop_done = EVUNLOOP_CANCEL; 2036 loop_done = EVUNLOOP_CANCEL;
1738 2037
1739 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1740 2039
1741 do 2040 do
1742 { 2041 {
2042#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A);
2044#endif
2045
1743#ifndef _WIN32 2046#ifndef _WIN32
1744 if (expect_false (curpid)) /* penalise the forking check even more */ 2047 if (expect_false (curpid)) /* penalise the forking check even more */
1745 if (expect_false (getpid () != curpid)) 2048 if (expect_false (getpid () != curpid))
1746 { 2049 {
1747 curpid = getpid (); 2050 curpid = getpid ();
… …
1764 { 2067 {
1765 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766 call_pending (EV_A); 2069 call_pending (EV_A);
1767 } 2070 }
1768 2071
1769 if (expect_false (!activecnt))
1770 break;
1771
1772 /* we might have forked, so reify kernel state if necessary */ 2072 /* we might have forked, so reify kernel state if necessary */
1773 if (expect_false (postfork)) 2073 if (expect_false (postfork))
1774 loop_fork (EV_A); 2074 loop_fork (EV_A);
1775 2075
1776 /* update fd-related kernel structures */ 2076 /* update fd-related kernel structures */
… …
1781 ev_tstamp waittime = 0.; 2081 ev_tstamp waittime = 0.;
1782 ev_tstamp sleeptime = 0.; 2082 ev_tstamp sleeptime = 0.;
1783 2083
1784 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1785 { 2085 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
1786 /* update time to cancel out callback processing overhead */ 2089 /* update time to cancel out callback processing overhead */
1787 time_update (EV_A_ 1e100); 2090 time_update (EV_A_ 1e100);
1788 2091
1789 waittime = MAX_BLOCKTIME; 2092 waittime = MAX_BLOCKTIME;
1790 2093
1791 if (timercnt) 2094 if (timercnt)
1792 { 2095 {
1793 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794 if (waittime > to) waittime = to; 2097 if (waittime > to) waittime = to;
1795 } 2098 }
1796 2099
1797#if EV_PERIODIC_ENABLE 2100#if EV_PERIODIC_ENABLE
1798 if (periodiccnt) 2101 if (periodiccnt)
1799 { 2102 {
1800 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801 if (waittime > to) waittime = to; 2104 if (waittime > to) waittime = to;
1802 } 2105 }
1803#endif 2106#endif
1804 2107
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */
1805 if (expect_false (waittime < timeout_blocktime)) 2109 if (expect_false (waittime < timeout_blocktime))
1806 waittime = timeout_blocktime; 2110 waittime = timeout_blocktime;
1807 2111
1808 sleeptime = waittime - backend_fudge; 2112 /* extra check because io_blocktime is commonly 0 */
1809
1810 if (expect_true (sleeptime > io_blocktime)) 2113 if (expect_false (io_blocktime))
1811 sleeptime = io_blocktime;
1812
1813 if (sleeptime)
1814 { 2114 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116
2117 if (sleeptime > waittime - backend_fudge)
2118 sleeptime = waittime - backend_fudge;
2119
2120 if (expect_true (sleeptime > 0.))
2121 {
1815 ev_sleep (sleeptime); 2122 ev_sleep (sleeptime);
1816 waittime -= sleeptime; 2123 waittime -= sleeptime;
2124 }
1817 } 2125 }
1818 } 2126 }
1819 2127
1820 ++loop_count; 2128 ++loop_count;
1821 backend_poll (EV_A_ waittime); 2129 backend_poll (EV_A_ waittime);
… …
1847 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1848 )); 2156 ));
1849 2157
1850 if (loop_done == EVUNLOOP_ONE) 2158 if (loop_done == EVUNLOOP_ONE)
1851 loop_done = EVUNLOOP_CANCEL; 2159 loop_done = EVUNLOOP_CANCEL;
2160
2161 --loop_depth;
1852} 2162}
1853 2163
1854void 2164void
1855ev_unloop (EV_P_ int how) 2165ev_unloop (EV_P_ int how)
1856{ 2166{
1857 loop_done = how; 2167 loop_done = how;
1858} 2168}
1859 2169
2170void
2171ev_ref (EV_P)
2172{
2173 ++activecnt;
2174}
2175
2176void
2177ev_unref (EV_P)
2178{
2179 --activecnt;
2180}
2181
2182void
2183ev_now_update (EV_P)
2184{
2185 time_update (EV_A_ 1e100);
2186}
2187
2188void
2189ev_suspend (EV_P)
2190{
2191 ev_now_update (EV_A);
2192}
2193
2194void
2195ev_resume (EV_P)
2196{
2197 ev_tstamp mn_prev = mn_now;
2198
2199 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev);
2201#if EV_PERIODIC_ENABLE
2202 /* TODO: really do this? */
2203 periodics_reschedule (EV_A);
2204#endif
2205}
2206
1860/*****************************************************************************/ 2207/*****************************************************************************/
2208/* singly-linked list management, used when the expected list length is short */
1861 2209
1862void inline_size 2210inline_size void
1863wlist_add (WL *head, WL elem) 2211wlist_add (WL *head, WL elem)
1864{ 2212{
1865 elem->next = *head; 2213 elem->next = *head;
1866 *head = elem; 2214 *head = elem;
1867} 2215}
1868 2216
1869void inline_size 2217inline_size void
1870wlist_del (WL *head, WL elem) 2218wlist_del (WL *head, WL elem)
1871{ 2219{
1872 while (*head) 2220 while (*head)
1873 { 2221 {
1874 if (*head == elem) 2222 if (*head == elem)
… …
1879 2227
1880 head = &(*head)->next; 2228 head = &(*head)->next;
1881 } 2229 }
1882} 2230}
1883 2231
1884void inline_speed 2232/* internal, faster, version of ev_clear_pending */
2233inline_speed void
1885clear_pending (EV_P_ W w) 2234clear_pending (EV_P_ W w)
1886{ 2235{
1887 if (w->pending) 2236 if (w->pending)
1888 { 2237 {
1889 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2238 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890 w->pending = 0; 2239 w->pending = 0;
1891 } 2240 }
1892} 2241}
1893 2242
1894int 2243int
… …
1898 int pending = w_->pending; 2247 int pending = w_->pending;
1899 2248
1900 if (expect_true (pending)) 2249 if (expect_true (pending))
1901 { 2250 {
1902 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2251 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2252 p->w = (W)&pending_w;
1903 w_->pending = 0; 2253 w_->pending = 0;
1904 p->w = 0;
1905 return p->events; 2254 return p->events;
1906 } 2255 }
1907 else 2256 else
1908 return 0; 2257 return 0;
1909} 2258}
1910 2259
1911void inline_size 2260inline_size void
1912pri_adjust (EV_P_ W w) 2261pri_adjust (EV_P_ W w)
1913{ 2262{
1914 int pri = w->priority; 2263 int pri = w->priority;
1915 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917 w->priority = pri; 2266 w->priority = pri;
1918} 2267}
1919 2268
1920void inline_speed 2269inline_speed void
1921ev_start (EV_P_ W w, int active) 2270ev_start (EV_P_ W w, int active)
1922{ 2271{
1923 pri_adjust (EV_A_ w); 2272 pri_adjust (EV_A_ w);
1924 w->active = active; 2273 w->active = active;
1925 ev_ref (EV_A); 2274 ev_ref (EV_A);
1926} 2275}
1927 2276
1928void inline_size 2277inline_size void
1929ev_stop (EV_P_ W w) 2278ev_stop (EV_P_ W w)
1930{ 2279{
1931 ev_unref (EV_A); 2280 ev_unref (EV_A);
1932 w->active = 0; 2281 w->active = 0;
1933} 2282}
… …
1940 int fd = w->fd; 2289 int fd = w->fd;
1941 2290
1942 if (expect_false (ev_is_active (w))) 2291 if (expect_false (ev_is_active (w)))
1943 return; 2292 return;
1944 2293
1945 assert (("ev_io_start called with negative fd", fd >= 0)); 2294 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296
2297 EV_FREQUENT_CHECK;
1946 2298
1947 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
1948 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949 wlist_add (&anfds[fd].head, (WL)w); 2301 wlist_add (&anfds[fd].head, (WL)w);
1950 2302
1951 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1952 w->events &= ~EV_IOFDSET; 2304 w->events &= ~EV__IOFDSET;
2305
2306 EV_FREQUENT_CHECK;
1953} 2307}
1954 2308
1955void noinline 2309void noinline
1956ev_io_stop (EV_P_ ev_io *w) 2310ev_io_stop (EV_P_ ev_io *w)
1957{ 2311{
1958 clear_pending (EV_A_ (W)w); 2312 clear_pending (EV_A_ (W)w);
1959 if (expect_false (!ev_is_active (w))) 2313 if (expect_false (!ev_is_active (w)))
1960 return; 2314 return;
1961 2315
1962 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2316 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2317
2318 EV_FREQUENT_CHECK;
1963 2319
1964 wlist_del (&anfds[w->fd].head, (WL)w); 2320 wlist_del (&anfds[w->fd].head, (WL)w);
1965 ev_stop (EV_A_ (W)w); 2321 ev_stop (EV_A_ (W)w);
1966 2322
1967 fd_change (EV_A_ w->fd, 1); 2323 fd_change (EV_A_ w->fd, 1);
2324
2325 EV_FREQUENT_CHECK;
1968} 2326}
1969 2327
1970void noinline 2328void noinline
1971ev_timer_start (EV_P_ ev_timer *w) 2329ev_timer_start (EV_P_ ev_timer *w)
1972{ 2330{
1973 if (expect_false (ev_is_active (w))) 2331 if (expect_false (ev_is_active (w)))
1974 return; 2332 return;
1975 2333
1976 ev_at (w) += mn_now; 2334 ev_at (w) += mn_now;
1977 2335
1978 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2336 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979 2337
2338 EV_FREQUENT_CHECK;
2339
2340 ++timercnt;
1980 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2342 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982 timers [ev_active (w)] = (WT)w; 2343 ANHE_w (timers [ev_active (w)]) = (WT)w;
2344 ANHE_at_cache (timers [ev_active (w)]);
1983 upheap (timers, ev_active (w)); 2345 upheap (timers, ev_active (w));
1984 2346
2347 EV_FREQUENT_CHECK;
2348
1985 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986} 2350}
1987 2351
1988void noinline 2352void noinline
1989ev_timer_stop (EV_P_ ev_timer *w) 2353ev_timer_stop (EV_P_ ev_timer *w)
1990{ 2354{
1991 clear_pending (EV_A_ (W)w); 2355 clear_pending (EV_A_ (W)w);
1992 if (expect_false (!ev_is_active (w))) 2356 if (expect_false (!ev_is_active (w)))
1993 return; 2357 return;
1994 2358
2359 EV_FREQUENT_CHECK;
2360
1995 { 2361 {
1996 int active = ev_active (w); 2362 int active = ev_active (w);
1997 2363
1998 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2364 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999 2365
2366 --timercnt;
2367
2000 if (expect_true (active < timercnt + HEAP0 - 1)) 2368 if (expect_true (active < timercnt + HEAP0))
2001 { 2369 {
2002 timers [active] = timers [timercnt + HEAP0 - 1]; 2370 timers [active] = timers [timercnt + HEAP0];
2003 adjustheap (timers, timercnt, active); 2371 adjustheap (timers, timercnt, active);
2004 } 2372 }
2005
2006 --timercnt;
2007 } 2373 }
2374
2375 EV_FREQUENT_CHECK;
2008 2376
2009 ev_at (w) -= mn_now; 2377 ev_at (w) -= mn_now;
2010 2378
2011 ev_stop (EV_A_ (W)w); 2379 ev_stop (EV_A_ (W)w);
2012} 2380}
2013 2381
2014void noinline 2382void noinline
2015ev_timer_again (EV_P_ ev_timer *w) 2383ev_timer_again (EV_P_ ev_timer *w)
2016{ 2384{
2385 EV_FREQUENT_CHECK;
2386
2017 if (ev_is_active (w)) 2387 if (ev_is_active (w))
2018 { 2388 {
2019 if (w->repeat) 2389 if (w->repeat)
2020 { 2390 {
2021 ev_at (w) = mn_now + w->repeat; 2391 ev_at (w) = mn_now + w->repeat;
2392 ANHE_at_cache (timers [ev_active (w)]);
2022 adjustheap (timers, timercnt, ev_active (w)); 2393 adjustheap (timers, timercnt, ev_active (w));
2023 } 2394 }
2024 else 2395 else
2025 ev_timer_stop (EV_A_ w); 2396 ev_timer_stop (EV_A_ w);
2026 } 2397 }
2027 else if (w->repeat) 2398 else if (w->repeat)
2028 { 2399 {
2029 ev_at (w) = w->repeat; 2400 ev_at (w) = w->repeat;
2030 ev_timer_start (EV_A_ w); 2401 ev_timer_start (EV_A_ w);
2031 } 2402 }
2403
2404 EV_FREQUENT_CHECK;
2032} 2405}
2033 2406
2034#if EV_PERIODIC_ENABLE 2407#if EV_PERIODIC_ENABLE
2035void noinline 2408void noinline
2036ev_periodic_start (EV_P_ ev_periodic *w) 2409ev_periodic_start (EV_P_ ev_periodic *w)
… …
2040 2413
2041 if (w->reschedule_cb) 2414 if (w->reschedule_cb)
2042 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043 else if (w->interval) 2416 else if (w->interval)
2044 { 2417 {
2045 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046 /* this formula differs from the one in periodic_reify because we do not always round up */ 2419 /* this formula differs from the one in periodic_reify because we do not always round up */
2047 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048 } 2421 }
2049 else 2422 else
2050 ev_at (w) = w->offset; 2423 ev_at (w) = w->offset;
2051 2424
2425 EV_FREQUENT_CHECK;
2426
2427 ++periodiccnt;
2052 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2428 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2429 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054 periodics [ev_active (w)] = (WT)w; 2430 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2431 ANHE_at_cache (periodics [ev_active (w)]);
2055 upheap (periodics, ev_active (w)); 2432 upheap (periodics, ev_active (w));
2056 2433
2434 EV_FREQUENT_CHECK;
2435
2057 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058} 2437}
2059 2438
2060void noinline 2439void noinline
2061ev_periodic_stop (EV_P_ ev_periodic *w) 2440ev_periodic_stop (EV_P_ ev_periodic *w)
2062{ 2441{
2063 clear_pending (EV_A_ (W)w); 2442 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 2443 if (expect_false (!ev_is_active (w)))
2065 return; 2444 return;
2066 2445
2446 EV_FREQUENT_CHECK;
2447
2067 { 2448 {
2068 int active = ev_active (w); 2449 int active = ev_active (w);
2069 2450
2070 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2451 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071 2452
2453 --periodiccnt;
2454
2072 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2455 if (expect_true (active < periodiccnt + HEAP0))
2073 { 2456 {
2074 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2457 periodics [active] = periodics [periodiccnt + HEAP0];
2075 adjustheap (periodics, periodiccnt, active); 2458 adjustheap (periodics, periodiccnt, active);
2076 } 2459 }
2077
2078 --periodiccnt;
2079 } 2460 }
2461
2462 EV_FREQUENT_CHECK;
2080 2463
2081 ev_stop (EV_A_ (W)w); 2464 ev_stop (EV_A_ (W)w);
2082} 2465}
2083 2466
2084void noinline 2467void noinline
… …
2096 2479
2097void noinline 2480void noinline
2098ev_signal_start (EV_P_ ev_signal *w) 2481ev_signal_start (EV_P_ ev_signal *w)
2099{ 2482{
2100#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
2101 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102#endif 2485#endif
2103 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
2104 return; 2487 return;
2105 2488
2106 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2107 2490
2108 evpipe_init (EV_A); 2491 evpipe_init (EV_A);
2492
2493 EV_FREQUENT_CHECK;
2109 2494
2110 { 2495 {
2111#ifndef _WIN32 2496#ifndef _WIN32
2112 sigset_t full, prev; 2497 sigset_t full, prev;
2113 sigfillset (&full); 2498 sigfillset (&full);
2114 sigprocmask (SIG_SETMASK, &full, &prev); 2499 sigprocmask (SIG_SETMASK, &full, &prev);
2115#endif 2500#endif
2116 2501
2117 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2118 2503
2119#ifndef _WIN32 2504#ifndef _WIN32
2120 sigprocmask (SIG_SETMASK, &prev, 0); 2505 sigprocmask (SIG_SETMASK, &prev, 0);
2121#endif 2506#endif
2122 } 2507 }
… …
2134 sigfillset (&sa.sa_mask); 2519 sigfillset (&sa.sa_mask);
2135 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136 sigaction (w->signum, &sa, 0); 2521 sigaction (w->signum, &sa, 0);
2137#endif 2522#endif
2138 } 2523 }
2524
2525 EV_FREQUENT_CHECK;
2139} 2526}
2140 2527
2141void noinline 2528void noinline
2142ev_signal_stop (EV_P_ ev_signal *w) 2529ev_signal_stop (EV_P_ ev_signal *w)
2143{ 2530{
2144 clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
2146 return; 2533 return;
2147 2534
2535 EV_FREQUENT_CHECK;
2536
2148 wlist_del (&signals [w->signum - 1].head, (WL)w); 2537 wlist_del (&signals [w->signum - 1].head, (WL)w);
2149 ev_stop (EV_A_ (W)w); 2538 ev_stop (EV_A_ (W)w);
2150 2539
2151 if (!signals [w->signum - 1].head) 2540 if (!signals [w->signum - 1].head)
2152 signal (w->signum, SIG_DFL); 2541 signal (w->signum, SIG_DFL);
2542
2543 EV_FREQUENT_CHECK;
2153} 2544}
2154 2545
2155void 2546void
2156ev_child_start (EV_P_ ev_child *w) 2547ev_child_start (EV_P_ ev_child *w)
2157{ 2548{
2158#if EV_MULTIPLICITY 2549#if EV_MULTIPLICITY
2159 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160#endif 2551#endif
2161 if (expect_false (ev_is_active (w))) 2552 if (expect_false (ev_is_active (w)))
2162 return; 2553 return;
2163 2554
2555 EV_FREQUENT_CHECK;
2556
2164 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
2165 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2559
2560 EV_FREQUENT_CHECK;
2166} 2561}
2167 2562
2168void 2563void
2169ev_child_stop (EV_P_ ev_child *w) 2564ev_child_stop (EV_P_ ev_child *w)
2170{ 2565{
2171 clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
2172 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
2173 return; 2568 return;
2174 2569
2570 EV_FREQUENT_CHECK;
2571
2175 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176 ev_stop (EV_A_ (W)w); 2573 ev_stop (EV_A_ (W)w);
2574
2575 EV_FREQUENT_CHECK;
2177} 2576}
2178 2577
2179#if EV_STAT_ENABLE 2578#if EV_STAT_ENABLE
2180 2579
2181# ifdef _WIN32 2580# ifdef _WIN32
2182# undef lstat 2581# undef lstat
2183# define lstat(a,b) _stati64 (a,b) 2582# define lstat(a,b) _stati64 (a,b)
2184# endif 2583# endif
2185 2584
2186#define DEF_STAT_INTERVAL 5.0074891 2585#define DEF_STAT_INTERVAL 5.0074891
2586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187#define MIN_STAT_INTERVAL 0.1074891 2587#define MIN_STAT_INTERVAL 0.1074891
2188 2588
2189static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190 2590
2191#if EV_USE_INOTIFY 2591#if EV_USE_INOTIFY
2192# define EV_INOTIFY_BUFSIZE 8192 2592# define EV_INOTIFY_BUFSIZE 8192
… …
2196{ 2596{
2197 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); 2597 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);
2198 2598
2199 if (w->wd < 0) 2599 if (w->wd < 0)
2200 { 2600 {
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2201 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2202 2603
2203 /* monitor some parent directory for speedup hints */ 2604 /* monitor some parent directory for speedup hints */
2204 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2205 /* but an efficiency issue only */ 2606 /* but an efficiency issue only */
2206 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207 { 2608 {
2208 char path [4096]; 2609 char path [4096];
2209 strcpy (path, w->path); 2610 strcpy (path, w->path);
… …
2213 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2614 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2615 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215 2616
2216 char *pend = strrchr (path, '/'); 2617 char *pend = strrchr (path, '/');
2217 2618
2218 if (!pend) 2619 if (!pend || pend == path)
2219 break; /* whoops, no '/', complain to your admin */ 2620 break;
2220 2621
2221 *pend = 0; 2622 *pend = 0;
2222 w->wd = inotify_add_watch (fs_fd, path, mask); 2623 w->wd = inotify_add_watch (fs_fd, path, mask);
2223 } 2624 }
2224 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225 } 2626 }
2226 } 2627 }
2227 else
2228 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229 2628
2230 if (w->wd >= 0) 2629 if (w->wd >= 0)
2630 {
2231 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2632
2633 /* now local changes will be tracked by inotify, but remote changes won't */
2634 /* unless the filesystem it known to be local, we therefore still poll */
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer);
2649 }
2232} 2650}
2233 2651
2234static void noinline 2652static void noinline
2235infy_del (EV_P_ ev_stat *w) 2653infy_del (EV_P_ ev_stat *w)
2236{ 2654{
… …
2250 2668
2251static void noinline 2669static void noinline
2252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253{ 2671{
2254 if (slot < 0) 2672 if (slot < 0)
2255 /* overflow, need to check for all hahs slots */ 2673 /* overflow, need to check for all hash slots */
2256 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257 infy_wd (EV_A_ slot, wd, ev); 2675 infy_wd (EV_A_ slot, wd, ev);
2258 else 2676 else
2259 { 2677 {
2260 WL w_; 2678 WL w_;
… …
2266 2684
2267 if (w->wd == wd || wd == -1) 2685 if (w->wd == wd || wd == -1)
2268 { 2686 {
2269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270 { 2688 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271 w->wd = -1; 2690 w->wd = -1;
2272 infy_add (EV_A_ w); /* re-add, no matter what */ 2691 infy_add (EV_A_ w); /* re-add, no matter what */
2273 } 2692 }
2274 2693
2275 stat_timer_cb (EV_A_ &w->timer, 0); 2694 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2288 2707
2289 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2290 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2709 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2291} 2710}
2292 2711
2293void inline_size 2712inline_size void
2713check_2625 (EV_P)
2714{
2715 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */
2718 struct utsname buf;
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return;
2723
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1;
2733}
2734
2735inline_size void
2294infy_init (EV_P) 2736infy_init (EV_P)
2295{ 2737{
2296 if (fs_fd != -2) 2738 if (fs_fd != -2)
2297 return; 2739 return;
2740
2741 fs_fd = -1;
2742
2743 check_2625 (EV_A);
2298 2744
2299 fs_fd = inotify_init (); 2745 fs_fd = inotify_init ();
2300 2746
2301 if (fs_fd >= 0) 2747 if (fs_fd >= 0)
2302 { 2748 {
… …
2304 ev_set_priority (&fs_w, EV_MAXPRI); 2750 ev_set_priority (&fs_w, EV_MAXPRI);
2305 ev_io_start (EV_A_ &fs_w); 2751 ev_io_start (EV_A_ &fs_w);
2306 } 2752 }
2307} 2753}
2308 2754
2309void inline_size 2755inline_size void
2310infy_fork (EV_P) 2756infy_fork (EV_P)
2311{ 2757{
2312 int slot; 2758 int slot;
2313 2759
2314 if (fs_fd < 0) 2760 if (fs_fd < 0)
… …
2330 w->wd = -1; 2776 w->wd = -1;
2331 2777
2332 if (fs_fd >= 0) 2778 if (fs_fd >= 0)
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2779 infy_add (EV_A_ w); /* re-add, no matter what */
2334 else 2780 else
2335 ev_timer_start (EV_A_ &w->timer); 2781 ev_timer_again (EV_A_ &w->timer);
2336 } 2782 }
2337
2338 } 2783 }
2339} 2784}
2340 2785
2786#endif
2787
2788#ifdef _WIN32
2789# define EV_LSTAT(p,b) _stati64 (p, b)
2790#else
2791# define EV_LSTAT(p,b) lstat (p, b)
2341#endif 2792#endif
2342 2793
2343void 2794void
2344ev_stat_stat (EV_P_ ev_stat *w) 2795ev_stat_stat (EV_P_ ev_stat *w)
2345{ 2796{
… …
2372 || w->prev.st_atime != w->attr.st_atime 2823 || w->prev.st_atime != w->attr.st_atime
2373 || w->prev.st_mtime != w->attr.st_mtime 2824 || w->prev.st_mtime != w->attr.st_mtime
2374 || w->prev.st_ctime != w->attr.st_ctime 2825 || w->prev.st_ctime != w->attr.st_ctime
2375 ) { 2826 ) {
2376 #if EV_USE_INOTIFY 2827 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0)
2829 {
2377 infy_del (EV_A_ w); 2830 infy_del (EV_A_ w);
2378 infy_add (EV_A_ w); 2831 infy_add (EV_A_ w);
2379 ev_stat_stat (EV_A_ w); /* avoid race... */ 2832 ev_stat_stat (EV_A_ w); /* avoid race... */
2833 }
2380 #endif 2834 #endif
2381 2835
2382 ev_feed_event (EV_A_ w, EV_STAT); 2836 ev_feed_event (EV_A_ w, EV_STAT);
2383 } 2837 }
2384} 2838}
… …
2387ev_stat_start (EV_P_ ev_stat *w) 2841ev_stat_start (EV_P_ ev_stat *w)
2388{ 2842{
2389 if (expect_false (ev_is_active (w))) 2843 if (expect_false (ev_is_active (w)))
2390 return; 2844 return;
2391 2845
2392 /* since we use memcmp, we need to clear any padding data etc. */
2393 memset (&w->prev, 0, sizeof (ev_statdata));
2394 memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396 ev_stat_stat (EV_A_ w); 2846 ev_stat_stat (EV_A_ w);
2397 2847
2848 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398 if (w->interval < MIN_STAT_INTERVAL) 2849 w->interval = MIN_STAT_INTERVAL;
2399 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400 2850
2401 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2851 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402 ev_set_priority (&w->timer, ev_priority (w)); 2852 ev_set_priority (&w->timer, ev_priority (w));
2403 2853
2404#if EV_USE_INOTIFY 2854#if EV_USE_INOTIFY
2405 infy_init (EV_A); 2855 infy_init (EV_A);
2406 2856
2407 if (fs_fd >= 0) 2857 if (fs_fd >= 0)
2408 infy_add (EV_A_ w); 2858 infy_add (EV_A_ w);
2409 else 2859 else
2410#endif 2860#endif
2411 ev_timer_start (EV_A_ &w->timer); 2861 ev_timer_again (EV_A_ &w->timer);
2412 2862
2413 ev_start (EV_A_ (W)w, 1); 2863 ev_start (EV_A_ (W)w, 1);
2864
2865 EV_FREQUENT_CHECK;
2414} 2866}
2415 2867
2416void 2868void
2417ev_stat_stop (EV_P_ ev_stat *w) 2869ev_stat_stop (EV_P_ ev_stat *w)
2418{ 2870{
2419 clear_pending (EV_A_ (W)w); 2871 clear_pending (EV_A_ (W)w);
2420 if (expect_false (!ev_is_active (w))) 2872 if (expect_false (!ev_is_active (w)))
2421 return; 2873 return;
2422 2874
2875 EV_FREQUENT_CHECK;
2876
2423#if EV_USE_INOTIFY 2877#if EV_USE_INOTIFY
2424 infy_del (EV_A_ w); 2878 infy_del (EV_A_ w);
2425#endif 2879#endif
2426 ev_timer_stop (EV_A_ &w->timer); 2880 ev_timer_stop (EV_A_ &w->timer);
2427 2881
2428 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
2883
2884 EV_FREQUENT_CHECK;
2429} 2885}
2430#endif 2886#endif
2431 2887
2432#if EV_IDLE_ENABLE 2888#if EV_IDLE_ENABLE
2433void 2889void
… …
2435{ 2891{
2436 if (expect_false (ev_is_active (w))) 2892 if (expect_false (ev_is_active (w)))
2437 return; 2893 return;
2438 2894
2439 pri_adjust (EV_A_ (W)w); 2895 pri_adjust (EV_A_ (W)w);
2896
2897 EV_FREQUENT_CHECK;
2440 2898
2441 { 2899 {
2442 int active = ++idlecnt [ABSPRI (w)]; 2900 int active = ++idlecnt [ABSPRI (w)];
2443 2901
2444 ++idleall; 2902 ++idleall;
2445 ev_start (EV_A_ (W)w, active); 2903 ev_start (EV_A_ (W)w, active);
2446 2904
2447 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2905 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448 idles [ABSPRI (w)][active - 1] = w; 2906 idles [ABSPRI (w)][active - 1] = w;
2449 } 2907 }
2908
2909 EV_FREQUENT_CHECK;
2450} 2910}
2451 2911
2452void 2912void
2453ev_idle_stop (EV_P_ ev_idle *w) 2913ev_idle_stop (EV_P_ ev_idle *w)
2454{ 2914{
2455 clear_pending (EV_A_ (W)w); 2915 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 2916 if (expect_false (!ev_is_active (w)))
2457 return; 2917 return;
2458 2918
2919 EV_FREQUENT_CHECK;
2920
2459 { 2921 {
2460 int active = ev_active (w); 2922 int active = ev_active (w);
2461 2923
2462 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2924 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2925 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464 2926
2465 ev_stop (EV_A_ (W)w); 2927 ev_stop (EV_A_ (W)w);
2466 --idleall; 2928 --idleall;
2467 } 2929 }
2930
2931 EV_FREQUENT_CHECK;
2468} 2932}
2469#endif 2933#endif
2470 2934
2471void 2935void
2472ev_prepare_start (EV_P_ ev_prepare *w) 2936ev_prepare_start (EV_P_ ev_prepare *w)
2473{ 2937{
2474 if (expect_false (ev_is_active (w))) 2938 if (expect_false (ev_is_active (w)))
2475 return; 2939 return;
2940
2941 EV_FREQUENT_CHECK;
2476 2942
2477 ev_start (EV_A_ (W)w, ++preparecnt); 2943 ev_start (EV_A_ (W)w, ++preparecnt);
2478 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2944 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479 prepares [preparecnt - 1] = w; 2945 prepares [preparecnt - 1] = w;
2946
2947 EV_FREQUENT_CHECK;
2480} 2948}
2481 2949
2482void 2950void
2483ev_prepare_stop (EV_P_ ev_prepare *w) 2951ev_prepare_stop (EV_P_ ev_prepare *w)
2484{ 2952{
2485 clear_pending (EV_A_ (W)w); 2953 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 2954 if (expect_false (!ev_is_active (w)))
2487 return; 2955 return;
2488 2956
2957 EV_FREQUENT_CHECK;
2958
2489 { 2959 {
2490 int active = ev_active (w); 2960 int active = ev_active (w);
2491 2961
2492 prepares [active - 1] = prepares [--preparecnt]; 2962 prepares [active - 1] = prepares [--preparecnt];
2493 ev_active (prepares [active - 1]) = active; 2963 ev_active (prepares [active - 1]) = active;
2494 } 2964 }
2495 2965
2496 ev_stop (EV_A_ (W)w); 2966 ev_stop (EV_A_ (W)w);
2967
2968 EV_FREQUENT_CHECK;
2497} 2969}
2498 2970
2499void 2971void
2500ev_check_start (EV_P_ ev_check *w) 2972ev_check_start (EV_P_ ev_check *w)
2501{ 2973{
2502 if (expect_false (ev_is_active (w))) 2974 if (expect_false (ev_is_active (w)))
2503 return; 2975 return;
2976
2977 EV_FREQUENT_CHECK;
2504 2978
2505 ev_start (EV_A_ (W)w, ++checkcnt); 2979 ev_start (EV_A_ (W)w, ++checkcnt);
2506 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2980 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507 checks [checkcnt - 1] = w; 2981 checks [checkcnt - 1] = w;
2982
2983 EV_FREQUENT_CHECK;
2508} 2984}
2509 2985
2510void 2986void
2511ev_check_stop (EV_P_ ev_check *w) 2987ev_check_stop (EV_P_ ev_check *w)
2512{ 2988{
2513 clear_pending (EV_A_ (W)w); 2989 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 2990 if (expect_false (!ev_is_active (w)))
2515 return; 2991 return;
2516 2992
2993 EV_FREQUENT_CHECK;
2994
2517 { 2995 {
2518 int active = ev_active (w); 2996 int active = ev_active (w);
2519 2997
2520 checks [active - 1] = checks [--checkcnt]; 2998 checks [active - 1] = checks [--checkcnt];
2521 ev_active (checks [active - 1]) = active; 2999 ev_active (checks [active - 1]) = active;
2522 } 3000 }
2523 3001
2524 ev_stop (EV_A_ (W)w); 3002 ev_stop (EV_A_ (W)w);
3003
3004 EV_FREQUENT_CHECK;
2525} 3005}
2526 3006
2527#if EV_EMBED_ENABLE 3007#if EV_EMBED_ENABLE
2528void noinline 3008void noinline
2529ev_embed_sweep (EV_P_ ev_embed *w) 3009ev_embed_sweep (EV_P_ ev_embed *w)
… …
2556 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3036 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557 } 3037 }
2558 } 3038 }
2559} 3039}
2560 3040
3041static void
3042embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3043{
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045
3046 ev_embed_stop (EV_A_ w);
3047
3048 {
3049 struct ev_loop *loop = w->other;
3050
3051 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3053 }
3054
3055 ev_embed_start (EV_A_ w);
3056}
3057
2561#if 0 3058#if 0
2562static void 3059static void
2563embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3060embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564{ 3061{
2565 ev_idle_stop (EV_A_ idle); 3062 ev_idle_stop (EV_A_ idle);
… …
2572 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2573 return; 3070 return;
2574 3071
2575 { 3072 {
2576 struct ev_loop *loop = w->other; 3073 struct ev_loop *loop = w->other;
2577 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579 } 3076 }
3077
3078 EV_FREQUENT_CHECK;
2580 3079
2581 ev_set_priority (&w->io, ev_priority (w)); 3080 ev_set_priority (&w->io, ev_priority (w));
2582 ev_io_start (EV_A_ &w->io); 3081 ev_io_start (EV_A_ &w->io);
2583 3082
2584 ev_prepare_init (&w->prepare, embed_prepare_cb); 3083 ev_prepare_init (&w->prepare, embed_prepare_cb);
2585 ev_set_priority (&w->prepare, EV_MINPRI); 3084 ev_set_priority (&w->prepare, EV_MINPRI);
2586 ev_prepare_start (EV_A_ &w->prepare); 3085 ev_prepare_start (EV_A_ &w->prepare);
2587 3086
3087 ev_fork_init (&w->fork, embed_fork_cb);
3088 ev_fork_start (EV_A_ &w->fork);
3089
2588 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3090 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589 3091
2590 ev_start (EV_A_ (W)w, 1); 3092 ev_start (EV_A_ (W)w, 1);
3093
3094 EV_FREQUENT_CHECK;
2591} 3095}
2592 3096
2593void 3097void
2594ev_embed_stop (EV_P_ ev_embed *w) 3098ev_embed_stop (EV_P_ ev_embed *w)
2595{ 3099{
2596 clear_pending (EV_A_ (W)w); 3100 clear_pending (EV_A_ (W)w);
2597 if (expect_false (!ev_is_active (w))) 3101 if (expect_false (!ev_is_active (w)))
2598 return; 3102 return;
2599 3103
3104 EV_FREQUENT_CHECK;
3105
2600 ev_io_stop (EV_A_ &w->io); 3106 ev_io_stop (EV_A_ &w->io);
2601 ev_prepare_stop (EV_A_ &w->prepare); 3107 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork);
2602 3109
2603 ev_stop (EV_A_ (W)w); 3110 EV_FREQUENT_CHECK;
2604} 3111}
2605#endif 3112#endif
2606 3113
2607#if EV_FORK_ENABLE 3114#if EV_FORK_ENABLE
2608void 3115void
2609ev_fork_start (EV_P_ ev_fork *w) 3116ev_fork_start (EV_P_ ev_fork *w)
2610{ 3117{
2611 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
2612 return; 3119 return;
3120
3121 EV_FREQUENT_CHECK;
2613 3122
2614 ev_start (EV_A_ (W)w, ++forkcnt); 3123 ev_start (EV_A_ (W)w, ++forkcnt);
2615 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3124 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616 forks [forkcnt - 1] = w; 3125 forks [forkcnt - 1] = w;
3126
3127 EV_FREQUENT_CHECK;
2617} 3128}
2618 3129
2619void 3130void
2620ev_fork_stop (EV_P_ ev_fork *w) 3131ev_fork_stop (EV_P_ ev_fork *w)
2621{ 3132{
2622 clear_pending (EV_A_ (W)w); 3133 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3134 if (expect_false (!ev_is_active (w)))
2624 return; 3135 return;
2625 3136
3137 EV_FREQUENT_CHECK;
3138
2626 { 3139 {
2627 int active = ev_active (w); 3140 int active = ev_active (w);
2628 3141
2629 forks [active - 1] = forks [--forkcnt]; 3142 forks [active - 1] = forks [--forkcnt];
2630 ev_active (forks [active - 1]) = active; 3143 ev_active (forks [active - 1]) = active;
2631 } 3144 }
2632 3145
2633 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
3147
3148 EV_FREQUENT_CHECK;
2634} 3149}
2635#endif 3150#endif
2636 3151
2637#if EV_ASYNC_ENABLE 3152#if EV_ASYNC_ENABLE
2638void 3153void
… …
2640{ 3155{
2641 if (expect_false (ev_is_active (w))) 3156 if (expect_false (ev_is_active (w)))
2642 return; 3157 return;
2643 3158
2644 evpipe_init (EV_A); 3159 evpipe_init (EV_A);
3160
3161 EV_FREQUENT_CHECK;
2645 3162
2646 ev_start (EV_A_ (W)w, ++asynccnt); 3163 ev_start (EV_A_ (W)w, ++asynccnt);
2647 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3164 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648 asyncs [asynccnt - 1] = w; 3165 asyncs [asynccnt - 1] = w;
3166
3167 EV_FREQUENT_CHECK;
2649} 3168}
2650 3169
2651void 3170void
2652ev_async_stop (EV_P_ ev_async *w) 3171ev_async_stop (EV_P_ ev_async *w)
2653{ 3172{
2654 clear_pending (EV_A_ (W)w); 3173 clear_pending (EV_A_ (W)w);
2655 if (expect_false (!ev_is_active (w))) 3174 if (expect_false (!ev_is_active (w)))
2656 return; 3175 return;
2657 3176
3177 EV_FREQUENT_CHECK;
3178
2658 { 3179 {
2659 int active = ev_active (w); 3180 int active = ev_active (w);
2660 3181
2661 asyncs [active - 1] = asyncs [--asynccnt]; 3182 asyncs [active - 1] = asyncs [--asynccnt];
2662 ev_active (asyncs [active - 1]) = active; 3183 ev_active (asyncs [active - 1]) = active;
2663 } 3184 }
2664 3185
2665 ev_stop (EV_A_ (W)w); 3186 ev_stop (EV_A_ (W)w);
3187
3188 EV_FREQUENT_CHECK;
2666} 3189}
2667 3190
2668void 3191void
2669ev_async_send (EV_P_ ev_async *w) 3192ev_async_send (EV_P_ ev_async *w)
2670{ 3193{
… …
2687once_cb (EV_P_ struct ev_once *once, int revents) 3210once_cb (EV_P_ struct ev_once *once, int revents)
2688{ 3211{
2689 void (*cb)(int revents, void *arg) = once->cb; 3212 void (*cb)(int revents, void *arg) = once->cb;
2690 void *arg = once->arg; 3213 void *arg = once->arg;
2691 3214
2692 ev_io_stop (EV_A_ &once->io); 3215 ev_io_stop (EV_A_ &once->io);
2693 ev_timer_stop (EV_A_ &once->to); 3216 ev_timer_stop (EV_A_ &once->to);
2694 ev_free (once); 3217 ev_free (once);
2695 3218
2696 cb (revents, arg); 3219 cb (revents, arg);
2697} 3220}
2698 3221
2699static void 3222static void
2700once_cb_io (EV_P_ ev_io *w, int revents) 3223once_cb_io (EV_P_ ev_io *w, int revents)
2701{ 3224{
2702 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3225 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3226
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703} 3228}
2704 3229
2705static void 3230static void
2706once_cb_to (EV_P_ ev_timer *w, int revents) 3231once_cb_to (EV_P_ ev_timer *w, int revents)
2707{ 3232{
2708 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3233 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3234
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709} 3236}
2710 3237
2711void 3238void
2712ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713{ 3240{
… …
2735 ev_timer_set (&once->to, timeout, 0.); 3262 ev_timer_set (&once->to, timeout, 0.);
2736 ev_timer_start (EV_A_ &once->to); 3263 ev_timer_start (EV_A_ &once->to);
2737 } 3264 }
2738} 3265}
2739 3266
3267/*****************************************************************************/
3268
3269#if EV_WALK_ENABLE
3270void
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3272{
3273 int i, j;
3274 ev_watcher_list *wl, *wn;
3275
3276 if (types & (EV_IO | EV_EMBED))
3277 for (i = 0; i < anfdmax; ++i)
3278 for (wl = anfds [i].head; wl; )
3279 {
3280 wn = wl->next;
3281
3282#if EV_EMBED_ENABLE
3283 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3284 {
3285 if (types & EV_EMBED)
3286 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3287 }
3288 else
3289#endif
3290#if EV_USE_INOTIFY
3291 if (ev_cb ((ev_io *)wl) == infy_cb)
3292 ;
3293 else
3294#endif
3295 if ((ev_io *)wl != &pipe_w)
3296 if (types & EV_IO)
3297 cb (EV_A_ EV_IO, wl);
3298
3299 wl = wn;
3300 }
3301
3302 if (types & (EV_TIMER | EV_STAT))
3303 for (i = timercnt + HEAP0; i-- > HEAP0; )
3304#if EV_STAT_ENABLE
3305 /*TODO: timer is not always active*/
3306 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3307 {
3308 if (types & EV_STAT)
3309 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3310 }
3311 else
3312#endif
3313 if (types & EV_TIMER)
3314 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3315
3316#if EV_PERIODIC_ENABLE
3317 if (types & EV_PERIODIC)
3318 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif
3321
3322#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; )
3325 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif
3328
3329#if EV_FORK_ENABLE
3330 if (types & EV_FORK)
3331 for (i = forkcnt; i--; )
3332 if (ev_cb (forks [i]) != embed_fork_cb)
3333 cb (EV_A_ EV_FORK, forks [i]);
3334#endif
3335
3336#if EV_ASYNC_ENABLE
3337 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif
3341
3342 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]);
3348
3349 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]);
3352
3353 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i)
3355 for (wl = signals [i].head; wl; )
3356 {
3357 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn;
3360 }
3361
3362 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; )
3364 for (wl = childs [i]; wl; )
3365 {
3366 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn;
3369 }
3370/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372}
3373#endif
3374
2740#if EV_MULTIPLICITY 3375#if EV_MULTIPLICITY
2741 #include "ev_wrap.h" 3376 #include "ev_wrap.h"
2742#endif 3377#endif
2743 3378
2744#ifdef __cplusplus 3379#ifdef __cplusplus

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