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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 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
240#ifndef EV_USE_4HEAP 281#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 282# define EV_USE_4HEAP !EV_MINIMAL
242#endif 283#endif
243 284
244#ifndef EV_HEAP_CACHE_AT 285#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 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
246#endif 301#endif
247 302
248/* 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 */
249 304
250#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
… …
267# include <sys/select.h> 322# include <sys/select.h>
268# endif 323# endif
269#endif 324#endif
270 325
271#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
272# 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
273#endif 335#endif
274 336
275#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 338# include <winsock.h>
277#endif 339#endif
… …
288# endif 350# endif
289#endif 351#endif
290 352
291/**/ 353/**/
292 354
293/* undefined or zero: no verification done or available */
294/* 1 or higher: ev_loop_verify function available */
295/* 2 or higher: ev_loop_verify is called frequently */
296#define EV_VERIFY 1
297
298#if EV_VERIFY > 1 355#if EV_VERIFY >= 3
299# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300#else 357#else
301# define EV_FREQUENT_CHECK do { } while (0) 358# define EV_FREQUENT_CHECK do { } while (0)
302#endif 359#endif
303 360
… …
347typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
348 405
349#define ev_active(w) ((W)(w))->active 406#define ev_active(w) ((W)(w))->active
350#define ev_at(w) ((WT)(w))->at 407#define ev_at(w) ((WT)(w))->at
351 408
352#if EV_USE_MONOTONIC 409#if EV_USE_REALTIME
353/* 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 */
354/* 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
355static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
356#endif 417#endif
357 418
358#ifdef _WIN32 419#ifdef _WIN32
359# include "ev_win32.c" 420# include "ev_win32.c"
… …
368{ 429{
369 syserr_cb = cb; 430 syserr_cb = cb;
370} 431}
371 432
372static void noinline 433static void noinline
373syserr (const char *msg) 434ev_syserr (const char *msg)
374{ 435{
375 if (!msg) 436 if (!msg)
376 msg = "(libev) system error"; 437 msg = "(libev) system error";
377 438
378 if (syserr_cb) 439 if (syserr_cb)
… …
424#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
425#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
426 487
427/*****************************************************************************/ 488/*****************************************************************************/
428 489
490/* file descriptor info structure */
429typedef struct 491typedef struct
430{ 492{
431 WL head; 493 WL head;
432 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 */
433 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
434#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
435 SOCKET handle; 502 SOCKET handle;
436#endif 503#endif
437} ANFD; 504} ANFD;
438 505
506/* stores the pending event set for a given watcher */
439typedef struct 507typedef struct
440{ 508{
441 W w; 509 W w;
442 int events; 510 int events; /* the pending event set for the given watcher */
443} ANPENDING; 511} ANPENDING;
444 512
445#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
446/* hash table entry per inotify-id */ 514/* hash table entry per inotify-id */
447typedef struct 515typedef struct
… …
450} ANFS; 518} ANFS;
451#endif 519#endif
452 520
453/* Heap Entry */ 521/* Heap Entry */
454#if EV_HEAP_CACHE_AT 522#if EV_HEAP_CACHE_AT
523 /* a heap element */
455 typedef struct { 524 typedef struct {
456 ev_tstamp at; 525 ev_tstamp at;
457 WT w; 526 WT w;
458 } ANHE; 527 } ANHE;
459 528
460 #define ANHE_w(he) (he).w /* access watcher, read-write */ 529 #define ANHE_w(he) (he).w /* access watcher, read-write */
461 #define ANHE_at(he) (he).at /* access cached at, read-only */ 530 #define ANHE_at(he) (he).at /* access cached at, read-only */
462 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463#else 532#else
533 /* a heap element */
464 typedef WT ANHE; 534 typedef WT ANHE;
465 535
466 #define ANHE_w(he) (he) 536 #define ANHE_w(he) (he)
467 #define ANHE_at(he) (he)->at 537 #define ANHE_at(he) (he)->at
468 #define ANHE_at_cache(he) 538 #define ANHE_at_cache(he)
… …
494 564
495#endif 565#endif
496 566
497/*****************************************************************************/ 567/*****************************************************************************/
498 568
569#ifndef EV_HAVE_EV_TIME
499ev_tstamp 570ev_tstamp
500ev_time (void) 571ev_time (void)
501{ 572{
502#if EV_USE_REALTIME 573#if EV_USE_REALTIME
574 if (expect_true (have_realtime))
575 {
503 struct timespec ts; 576 struct timespec ts;
504 clock_gettime (CLOCK_REALTIME, &ts); 577 clock_gettime (CLOCK_REALTIME, &ts);
505 return ts.tv_sec + ts.tv_nsec * 1e-9; 578 return ts.tv_sec + ts.tv_nsec * 1e-9;
506#else 579 }
580#endif
581
507 struct timeval tv; 582 struct timeval tv;
508 gettimeofday (&tv, 0); 583 gettimeofday (&tv, 0);
509 return tv.tv_sec + tv.tv_usec * 1e-6; 584 return tv.tv_sec + tv.tv_usec * 1e-6;
510#endif
511} 585}
586#endif
512 587
513ev_tstamp inline_size 588inline_size ev_tstamp
514get_clock (void) 589get_clock (void)
515{ 590{
516#if EV_USE_MONOTONIC 591#if EV_USE_MONOTONIC
517 if (expect_true (have_monotonic)) 592 if (expect_true (have_monotonic))
518 { 593 {
… …
551 struct timeval tv; 626 struct timeval tv;
552 627
553 tv.tv_sec = (time_t)delay; 628 tv.tv_sec = (time_t)delay;
554 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555 630
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 */
556 select (0, 0, 0, 0, &tv); 634 select (0, 0, 0, 0, &tv);
557#endif 635#endif
558 } 636 }
559} 637}
560 638
561/*****************************************************************************/ 639/*****************************************************************************/
562 640
563#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 */
564 642
565int 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
566array_nextsize (int elem, int cur, int cnt) 646array_nextsize (int elem, int cur, int cnt)
567{ 647{
568 int ncur = cur + 1; 648 int ncur = cur + 1;
569 649
570 do 650 do
… …
587array_realloc (int elem, void *base, int *cur, int cnt) 667array_realloc (int elem, void *base, int *cur, int cnt)
588{ 668{
589 *cur = array_nextsize (elem, *cur, cnt); 669 *cur = array_nextsize (elem, *cur, cnt);
590 return ev_realloc (base, elem * *cur); 670 return ev_realloc (base, elem * *cur);
591} 671}
672
673#define array_init_zero(base,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count))
592 675
593#define array_needsize(type,base,cur,cnt,init) \ 676#define array_needsize(type,base,cur,cnt,init) \
594 if (expect_false ((cnt) > (cur))) \ 677 if (expect_false ((cnt) > (cur))) \
595 { \ 678 { \
596 int ocur_ = (cur); \ 679 int ocur_ = (cur); \
… …
608 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 691 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609 } 692 }
610#endif 693#endif
611 694
612#define array_free(stem, idx) \ 695#define array_free(stem, idx) \
613 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
614 697
615/*****************************************************************************/ 698/*****************************************************************************/
699
700/* dummy callback for pending events */
701static void noinline
702pendingcb (EV_P_ ev_prepare *w, int revents)
703{
704}
616 705
617void noinline 706void noinline
618ev_feed_event (EV_P_ void *w, int revents) 707ev_feed_event (EV_P_ void *w, int revents)
619{ 708{
620 W w_ = (W)w; 709 W w_ = (W)w;
… …
629 pendings [pri][w_->pending - 1].w = w_; 718 pendings [pri][w_->pending - 1].w = w_;
630 pendings [pri][w_->pending - 1].events = revents; 719 pendings [pri][w_->pending - 1].events = revents;
631 } 720 }
632} 721}
633 722
634void 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
635queue_events (EV_P_ W *events, int eventcnt, int type) 739queue_events (EV_P_ W *events, int eventcnt, int type)
636{ 740{
637 int i; 741 int i;
638 742
639 for (i = 0; i < eventcnt; ++i) 743 for (i = 0; i < eventcnt; ++i)
640 ev_feed_event (EV_A_ events [i], type); 744 ev_feed_event (EV_A_ events [i], type);
641} 745}
642 746
643/*****************************************************************************/ 747/*****************************************************************************/
644 748
645void inline_size 749inline_speed void
646anfds_init (ANFD *base, int count)
647{
648 while (count--)
649 {
650 base->head = 0;
651 base->events = EV_NONE;
652 base->reify = 0;
653
654 ++base;
655 }
656}
657
658void inline_speed
659fd_event (EV_P_ int fd, int revents) 750fd_event (EV_P_ int fd, int revents)
660{ 751{
661 ANFD *anfd = anfds + fd; 752 ANFD *anfd = anfds + fd;
662 ev_io *w; 753 ev_io *w;
663 754
… …
675{ 766{
676 if (fd >= 0 && fd < anfdmax) 767 if (fd >= 0 && fd < anfdmax)
677 fd_event (EV_A_ fd, revents); 768 fd_event (EV_A_ fd, revents);
678} 769}
679 770
680void inline_size 771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */
773inline_size void
681fd_reify (EV_P) 774fd_reify (EV_P)
682{ 775{
683 int i; 776 int i;
684 777
685 for (i = 0; i < fdchangecnt; ++i) 778 for (i = 0; i < fdchangecnt; ++i)
… …
694 events |= (unsigned char)w->events; 787 events |= (unsigned char)w->events;
695 788
696#if EV_SELECT_IS_WINSOCKET 789#if EV_SELECT_IS_WINSOCKET
697 if (events) 790 if (events)
698 { 791 {
699 unsigned long argp; 792 unsigned long arg;
700 #ifdef EV_FD_TO_WIN32_HANDLE 793 #ifdef EV_FD_TO_WIN32_HANDLE
701 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702 #else 795 #else
703 anfd->handle = _get_osfhandle (fd); 796 anfd->handle = _get_osfhandle (fd);
704 #endif 797 #endif
705 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));
706 } 799 }
707#endif 800#endif
708 801
709 { 802 {
710 unsigned char o_events = anfd->events; 803 unsigned char o_events = anfd->events;
711 unsigned char o_reify = anfd->reify; 804 unsigned char o_reify = anfd->reify;
712 805
713 anfd->reify = 0; 806 anfd->reify = 0;
714 anfd->events = events; 807 anfd->events = events;
715 808
716 if (o_events != events || o_reify & EV_IOFDSET) 809 if (o_events != events || o_reify & EV__IOFDSET)
717 backend_modify (EV_A_ fd, o_events, events); 810 backend_modify (EV_A_ fd, o_events, events);
718 } 811 }
719 } 812 }
720 813
721 fdchangecnt = 0; 814 fdchangecnt = 0;
722} 815}
723 816
724void inline_size 817/* something about the given fd changed */
818inline_size void
725fd_change (EV_P_ int fd, int flags) 819fd_change (EV_P_ int fd, int flags)
726{ 820{
727 unsigned char reify = anfds [fd].reify; 821 unsigned char reify = anfds [fd].reify;
728 anfds [fd].reify |= flags; 822 anfds [fd].reify |= flags;
729 823
… …
733 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734 fdchanges [fdchangecnt - 1] = fd; 828 fdchanges [fdchangecnt - 1] = fd;
735 } 829 }
736} 830}
737 831
738void inline_speed 832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void
739fd_kill (EV_P_ int fd) 834fd_kill (EV_P_ int fd)
740{ 835{
741 ev_io *w; 836 ev_io *w;
742 837
743 while ((w = (ev_io *)anfds [fd].head)) 838 while ((w = (ev_io *)anfds [fd].head))
… …
745 ev_io_stop (EV_A_ w); 840 ev_io_stop (EV_A_ w);
746 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);
747 } 842 }
748} 843}
749 844
750int inline_size 845/* check whether the given fd is atcually valid, for error recovery */
846inline_size int
751fd_valid (int fd) 847fd_valid (int fd)
752{ 848{
753#ifdef _WIN32 849#ifdef _WIN32
754 return _get_osfhandle (fd) != -1; 850 return _get_osfhandle (fd) != -1;
755#else 851#else
… …
763{ 859{
764 int fd; 860 int fd;
765 861
766 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
767 if (anfds [fd].events) 863 if (anfds [fd].events)
768 if (!fd_valid (fd) == -1 && errno == EBADF) 864 if (!fd_valid (fd) && errno == EBADF)
769 fd_kill (EV_A_ fd); 865 fd_kill (EV_A_ fd);
770} 866}
771 867
772/* 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 */
773static void noinline 869static void noinline
… …
791 887
792 for (fd = 0; fd < anfdmax; ++fd) 888 for (fd = 0; fd < anfdmax; ++fd)
793 if (anfds [fd].events) 889 if (anfds [fd].events)
794 { 890 {
795 anfds [fd].events = 0; 891 anfds [fd].events = 0;
892 anfds [fd].emask = 0;
796 fd_change (EV_A_ fd, EV_IOFDSET | 1); 893 fd_change (EV_A_ fd, EV__IOFDSET | 1);
797 } 894 }
798} 895}
799 896
800/*****************************************************************************/ 897/*****************************************************************************/
801 898
… …
817#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 914#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 915#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819#define UPHEAP_DONE(p,k) ((p) == (k)) 916#define UPHEAP_DONE(p,k) ((p) == (k))
820 917
821/* away from the root */ 918/* away from the root */
822void inline_speed 919inline_speed void
823downheap (ANHE *heap, int N, int k) 920downheap (ANHE *heap, int N, int k)
824{ 921{
825 ANHE he = heap [k]; 922 ANHE he = heap [k];
826 ANHE *E = heap + N + HEAP0; 923 ANHE *E = heap + N + HEAP0;
827 924
… …
867#define HEAP0 1 964#define HEAP0 1
868#define HPARENT(k) ((k) >> 1) 965#define HPARENT(k) ((k) >> 1)
869#define UPHEAP_DONE(p,k) (!(p)) 966#define UPHEAP_DONE(p,k) (!(p))
870 967
871/* away from the root */ 968/* away from the root */
872void inline_speed 969inline_speed void
873downheap (ANHE *heap, int N, int k) 970downheap (ANHE *heap, int N, int k)
874{ 971{
875 ANHE he = heap [k]; 972 ANHE he = heap [k];
876 973
877 for (;;) 974 for (;;)
… …
897 ev_active (ANHE_w (he)) = k; 994 ev_active (ANHE_w (he)) = k;
898} 995}
899#endif 996#endif
900 997
901/* towards the root */ 998/* towards the root */
902void inline_speed 999inline_speed void
903upheap (ANHE *heap, int k) 1000upheap (ANHE *heap, int k)
904{ 1001{
905 ANHE he = heap [k]; 1002 ANHE he = heap [k];
906 1003
907 for (;;) 1004 for (;;)
… …
918 1015
919 heap [k] = he; 1016 heap [k] = he;
920 ev_active (ANHE_w (he)) = k; 1017 ev_active (ANHE_w (he)) = k;
921} 1018}
922 1019
923void inline_size 1020/* move an element suitably so it is in a correct place */
1021inline_size void
924adjustheap (ANHE *heap, int N, int k) 1022adjustheap (ANHE *heap, int N, int k)
925{ 1023{
926 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927 upheap (heap, k); 1025 upheap (heap, k);
928 else 1026 else
929 downheap (heap, N, k); 1027 downheap (heap, N, k);
930} 1028}
931 1029
932/* rebuild the heap: this function is used only once and executed rarely */ 1030/* rebuild the heap: this function is used only once and executed rarely */
933void inline_size 1031inline_size void
934reheap (ANHE *heap, int N) 1032reheap (ANHE *heap, int N)
935{ 1033{
936 int i; 1034 int i;
1035
937 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1036 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1037 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939 for (i = 0; i < N; ++i) 1038 for (i = 0; i < N; ++i)
940 upheap (heap, i + HEAP0); 1039 upheap (heap, i + HEAP0);
941} 1040}
942 1041
943#if EV_VERIFY
944static void
945checkheap (ANHE *heap, int N)
946{
947 int i;
948
949 for (i = HEAP0; i < N + HEAP0; ++i)
950 {
951 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954 }
955}
956#endif
957
958/*****************************************************************************/ 1042/*****************************************************************************/
959 1043
1044/* associate signal watchers to a signal signal */
960typedef struct 1045typedef struct
961{ 1046{
962 WL head; 1047 WL head;
963 EV_ATOMIC_T gotsig; 1048 EV_ATOMIC_T gotsig;
964} ANSIG; 1049} ANSIG;
… …
966static ANSIG *signals; 1051static ANSIG *signals;
967static int signalmax; 1052static int signalmax;
968 1053
969static EV_ATOMIC_T gotsig; 1054static EV_ATOMIC_T gotsig;
970 1055
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982
983/*****************************************************************************/ 1056/*****************************************************************************/
984 1057
985void inline_speed 1058/* used to prepare libev internal fd's */
1059/* this is not fork-safe */
1060inline_speed void
986fd_intern (int fd) 1061fd_intern (int fd)
987{ 1062{
988#ifdef _WIN32 1063#ifdef _WIN32
989 int arg = 1; 1064 unsigned long arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991#else 1066#else
992 fcntl (fd, F_SETFD, FD_CLOEXEC); 1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
993 fcntl (fd, F_SETFL, O_NONBLOCK); 1068 fcntl (fd, F_SETFL, O_NONBLOCK);
994#endif 1069#endif
995} 1070}
996 1071
997static void noinline 1072static void noinline
998evpipe_init (EV_P) 1073evpipe_init (EV_P)
999{ 1074{
1000 if (!ev_is_active (&pipeev)) 1075 if (!ev_is_active (&pipe_w))
1001 { 1076 {
1002#if EV_USE_EVENTFD 1077#if EV_USE_EVENTFD
1003 if ((evfd = eventfd (0, 0)) >= 0) 1078 if ((evfd = eventfd (0, 0)) >= 0)
1004 { 1079 {
1005 evpipe [0] = -1; 1080 evpipe [0] = -1;
1006 fd_intern (evfd); 1081 fd_intern (evfd);
1007 ev_io_set (&pipeev, evfd, EV_READ); 1082 ev_io_set (&pipe_w, evfd, EV_READ);
1008 } 1083 }
1009 else 1084 else
1010#endif 1085#endif
1011 { 1086 {
1012 while (pipe (evpipe)) 1087 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1088 ev_syserr ("(libev) error creating signal/async pipe");
1014 1089
1015 fd_intern (evpipe [0]); 1090 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1091 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1092 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018 } 1093 }
1019 1094
1020 ev_io_start (EV_A_ &pipeev); 1095 ev_io_start (EV_A_ &pipe_w);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1097 }
1023} 1098}
1024 1099
1025void inline_size 1100inline_size void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1102{
1028 if (!*flag) 1103 if (!*flag)
1029 { 1104 {
1030 int old_errno = errno; /* save errno because write might clobber it */ 1105 int old_errno = errno; /* save errno because write might clobber it */
… …
1043 1118
1044 errno = old_errno; 1119 errno = old_errno;
1045 } 1120 }
1046} 1121}
1047 1122
1123/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */
1048static void 1125static void
1049pipecb (EV_P_ ev_io *iow, int revents) 1126pipecb (EV_P_ ev_io *iow, int revents)
1050{ 1127{
1051#if EV_USE_EVENTFD 1128#if EV_USE_EVENTFD
1052 if (evfd >= 0) 1129 if (evfd >= 0)
… …
1108ev_feed_signal_event (EV_P_ int signum) 1185ev_feed_signal_event (EV_P_ int signum)
1109{ 1186{
1110 WL w; 1187 WL w;
1111 1188
1112#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
1113 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));
1114#endif 1191#endif
1115 1192
1116 --signum; 1193 --signum;
1117 1194
1118 if (signum < 0 || signum >= signalmax) 1195 if (signum < 0 || signum >= signalmax)
… …
1134 1211
1135#ifndef WIFCONTINUED 1212#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1213# define WIFCONTINUED(status) 0
1137#endif 1214#endif
1138 1215
1139void inline_speed 1216/* handle a single child status event */
1217inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1218child_reap (EV_P_ int chain, int pid, int status)
1141{ 1219{
1142 ev_child *w; 1220 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1222
… …
1157 1235
1158#ifndef WCONTINUED 1236#ifndef WCONTINUED
1159# define WCONTINUED 0 1237# define WCONTINUED 0
1160#endif 1238#endif
1161 1239
1240/* called on sigchld etc., calls waitpid */
1162static void 1241static void
1163childcb (EV_P_ ev_signal *sw, int revents) 1242childcb (EV_P_ ev_signal *sw, int revents)
1164{ 1243{
1165 int pid, status; 1244 int pid, status;
1166 1245
… …
1247 /* kqueue is borked on everything but netbsd apparently */ 1326 /* kqueue is borked on everything but netbsd apparently */
1248 /* 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 */
1249 flags &= ~EVBACKEND_KQUEUE; 1328 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1329#endif
1251#ifdef __APPLE__ 1330#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1331 /* only select works correctly on that "unix-certified" platform */
1253 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 */
1254#endif 1334#endif
1255 1335
1256 return flags; 1336 return flags;
1257} 1337}
1258 1338
… …
1278ev_loop_count (EV_P) 1358ev_loop_count (EV_P)
1279{ 1359{
1280 return loop_count; 1360 return loop_count;
1281} 1361}
1282 1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{
1366 return loop_depth;
1367}
1368
1283void 1369void
1284ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1371{
1286 io_blocktime = interval; 1372 io_blocktime = interval;
1287} 1373}
… …
1290ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1377{
1292 timeout_blocktime = interval; 1378 timeout_blocktime = interval;
1293} 1379}
1294 1380
1381/* initialise a loop structure, must be zero-initialised */
1295static void noinline 1382static void noinline
1296loop_init (EV_P_ unsigned int flags) 1383loop_init (EV_P_ unsigned int flags)
1297{ 1384{
1298 if (!backend) 1385 if (!backend)
1299 { 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
1300#if EV_USE_MONOTONIC 1397#if EV_USE_MONOTONIC
1398 if (!have_monotonic)
1301 { 1399 {
1302 struct timespec ts; 1400 struct timespec ts;
1401
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1403 have_monotonic = 1;
1305 } 1404 }
1306#endif 1405#endif
1307 1406
1308 ev_rt_now = ev_time (); 1407 ev_rt_now = ev_time ();
1309 mn_now = get_clock (); 1408 mn_now = get_clock ();
1310 now_floor = mn_now; 1409 now_floor = mn_now;
… …
1347#endif 1446#endif
1348#if EV_USE_SELECT 1447#if EV_USE_SELECT
1349 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350#endif 1449#endif
1351 1450
1451 ev_prepare_init (&pending_w, pendingcb);
1452
1352 ev_init (&pipeev, pipecb); 1453 ev_init (&pipe_w, pipecb);
1353 ev_set_priority (&pipeev, EV_MAXPRI); 1454 ev_set_priority (&pipe_w, EV_MAXPRI);
1354 } 1455 }
1355} 1456}
1356 1457
1458/* free up a loop structure */
1357static void noinline 1459static void noinline
1358loop_destroy (EV_P) 1460loop_destroy (EV_P)
1359{ 1461{
1360 int i; 1462 int i;
1361 1463
1362 if (ev_is_active (&pipeev)) 1464 if (ev_is_active (&pipe_w))
1363 { 1465 {
1364 ev_ref (EV_A); /* signal watcher */ 1466 ev_ref (EV_A); /* signal watcher */
1365 ev_io_stop (EV_A_ &pipeev); 1467 ev_io_stop (EV_A_ &pipe_w);
1366 1468
1367#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1368 if (evfd >= 0) 1470 if (evfd >= 0)
1369 close (evfd); 1471 close (evfd);
1370#endif 1472#endif
… …
1409 } 1511 }
1410 1512
1411 ev_free (anfds); anfdmax = 0; 1513 ev_free (anfds); anfdmax = 0;
1412 1514
1413 /* 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);
1414 array_free (fdchange, EMPTY); 1517 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1518 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1520 array_free (periodic, EMPTY);
1418#endif 1521#endif
… …
1427 1530
1428 backend = 0; 1531 backend = 0;
1429} 1532}
1430 1533
1431#if EV_USE_INOTIFY 1534#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 1535inline_size void infy_fork (EV_P);
1433#endif 1536#endif
1434 1537
1435void inline_size 1538inline_size void
1436loop_fork (EV_P) 1539loop_fork (EV_P)
1437{ 1540{
1438#if EV_USE_PORT 1541#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 1543#endif
… …
1446#endif 1549#endif
1447#if EV_USE_INOTIFY 1550#if EV_USE_INOTIFY
1448 infy_fork (EV_A); 1551 infy_fork (EV_A);
1449#endif 1552#endif
1450 1553
1451 if (ev_is_active (&pipeev)) 1554 if (ev_is_active (&pipe_w))
1452 { 1555 {
1453 /* this "locks" the handlers against writing to the pipe */ 1556 /* this "locks" the handlers against writing to the pipe */
1454 /* while we modify the fd vars */ 1557 /* while we modify the fd vars */
1455 gotsig = 1; 1558 gotsig = 1;
1456#if EV_ASYNC_ENABLE 1559#if EV_ASYNC_ENABLE
1457 gotasync = 1; 1560 gotasync = 1;
1458#endif 1561#endif
1459 1562
1460 ev_ref (EV_A); 1563 ev_ref (EV_A);
1461 ev_io_stop (EV_A_ &pipeev); 1564 ev_io_stop (EV_A_ &pipe_w);
1462 1565
1463#if EV_USE_EVENTFD 1566#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1567 if (evfd >= 0)
1465 close (evfd); 1568 close (evfd);
1466#endif 1569#endif
… …
1471 close (evpipe [1]); 1574 close (evpipe [1]);
1472 } 1575 }
1473 1576
1474 evpipe_init (EV_A); 1577 evpipe_init (EV_A);
1475 /* now iterate over everything, in case we missed something */ 1578 /* now iterate over everything, in case we missed something */
1476 pipecb (EV_A_ &pipeev, EV_READ); 1579 pipecb (EV_A_ &pipe_w, EV_READ);
1477 } 1580 }
1478 1581
1479 postfork = 0; 1582 postfork = 0;
1480} 1583}
1481 1584
1482#if EV_MULTIPLICITY 1585#if EV_MULTIPLICITY
1586
1483struct ev_loop * 1587struct ev_loop *
1484ev_loop_new (unsigned int flags) 1588ev_loop_new (unsigned int flags)
1485{ 1589{
1486 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));
1487 1591
… …
1507{ 1611{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1612 postfork = 1; /* must be in line with ev_default_fork */
1509} 1613}
1510 1614
1511#if EV_VERIFY 1615#if EV_VERIFY
1512static void 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
1513array_check (W **ws, int cnt) 1641array_verify (EV_P_ W *ws, int cnt)
1514{ 1642{
1515 while (cnt--) 1643 while (cnt--)
1644 {
1516 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]);
1647 }
1517} 1648}
1649#endif
1518 1650
1519static void 1651void
1520ev_loop_verify (EV_P) 1652ev_loop_verify (EV_P)
1521{ 1653{
1654#if EV_VERIFY
1522 int i; 1655 int i;
1656 WL w;
1523 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);
1524 checkheap (timers, timercnt); 1674 verify_heap (EV_A_ timers, timercnt);
1675
1525#if EV_PERIODIC_ENABLE 1676#if EV_PERIODIC_ENABLE
1677 assert (periodicmax >= periodiccnt);
1526 checkheap (periodics, periodiccnt); 1678 verify_heap (EV_A_ periodics, periodiccnt);
1527#endif 1679#endif
1528 1680
1681 for (i = NUMPRI; i--; )
1682 {
1683 assert (pendingmax [i] >= pendingcnt [i]);
1529#if EV_IDLE_ENABLE 1684#if EV_IDLE_ENABLE
1530 for (i = NUMPRI; i--; ) 1685 assert (idleall >= 0);
1686 assert (idlemax [i] >= idlecnt [i]);
1531 array_check ((W **)idles [i], idlecnt [i]); 1687 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532#endif 1688#endif
1689 }
1690
1533#if EV_FORK_ENABLE 1691#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt);
1534 array_check ((W **)forks, forkcnt); 1693 array_verify (EV_A_ (W *)forks, forkcnt);
1535#endif 1694#endif
1536 array_check ((W **)prepares, preparecnt); 1695
1537 array_check ((W **)checks, checkcnt);
1538#if EV_ASYNC_ENABLE 1696#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt);
1539 array_check ((W **)asyncs, 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)
1540#endif 1710# endif
1541}
1542#endif 1711#endif
1712}
1543 1713
1544#endif 1714#endif /* multiplicity */
1545 1715
1546#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
1547struct ev_loop * 1717struct ev_loop *
1548ev_default_loop_init (unsigned int flags) 1718ev_default_loop_init (unsigned int flags)
1549#else 1719#else
… …
1582{ 1752{
1583#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
1584 struct ev_loop *loop = ev_default_loop_ptr; 1754 struct ev_loop *loop = ev_default_loop_ptr;
1585#endif 1755#endif
1586 1756
1757 ev_default_loop_ptr = 0;
1758
1587#ifndef _WIN32 1759#ifndef _WIN32
1588 ev_ref (EV_A); /* child watcher */ 1760 ev_ref (EV_A); /* child watcher */
1589 ev_signal_stop (EV_A_ &childev); 1761 ev_signal_stop (EV_A_ &childev);
1590#endif 1762#endif
1591 1763
… …
1597{ 1769{
1598#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1599 struct ev_loop *loop = ev_default_loop_ptr; 1771 struct ev_loop *loop = ev_default_loop_ptr;
1600#endif 1772#endif
1601 1773
1602 if (backend)
1603 postfork = 1; /* must be in line with ev_loop_fork */ 1774 postfork = 1; /* must be in line with ev_loop_fork */
1604} 1775}
1605 1776
1606/*****************************************************************************/ 1777/*****************************************************************************/
1607 1778
1608void 1779void
1609ev_invoke (EV_P_ void *w, int revents) 1780ev_invoke (EV_P_ void *w, int revents)
1610{ 1781{
1611 EV_CB_INVOKE ((W)w, revents); 1782 EV_CB_INVOKE ((W)w, revents);
1612} 1783}
1613 1784
1614void inline_speed 1785inline_speed void
1615call_pending (EV_P) 1786call_pending (EV_P)
1616{ 1787{
1617 int pri; 1788 int pri;
1618
1619 EV_FREQUENT_CHECK;
1620 1789
1621 for (pri = NUMPRI; pri--; ) 1790 for (pri = NUMPRI; pri--; )
1622 while (pendingcnt [pri]) 1791 while (pendingcnt [pri])
1623 { 1792 {
1624 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625 1794
1626 if (expect_true (p->w))
1627 {
1628 /*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 */
1629 1797
1630 p->w->pending = 0; 1798 p->w->pending = 0;
1631 EV_CB_INVOKE (p->w, p->events); 1799 EV_CB_INVOKE (p->w, p->events);
1632 } 1800 EV_FREQUENT_CHECK;
1633 } 1801 }
1634
1635 EV_FREQUENT_CHECK;
1636} 1802}
1637 1803
1638#if EV_IDLE_ENABLE 1804#if EV_IDLE_ENABLE
1639void inline_size 1805/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */
1807inline_size void
1640idle_reify (EV_P) 1808idle_reify (EV_P)
1641{ 1809{
1642 if (expect_false (idleall)) 1810 if (expect_false (idleall))
1643 { 1811 {
1644 int pri; 1812 int pri;
… …
1656 } 1824 }
1657 } 1825 }
1658} 1826}
1659#endif 1827#endif
1660 1828
1661void inline_size 1829/* make timers pending */
1830inline_size void
1662timers_reify (EV_P) 1831timers_reify (EV_P)
1663{ 1832{
1664 EV_FREQUENT_CHECK; 1833 EV_FREQUENT_CHECK;
1665 1834
1666 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1835 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667 { 1836 {
1668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1837 do
1669
1670 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672 /* first reschedule or stop timer */
1673 if (w->repeat)
1674 { 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 {
1675 ev_at (w) += w->repeat; 1846 ev_at (w) += w->repeat;
1676 if (ev_at (w) < mn_now) 1847 if (ev_at (w) < mn_now)
1677 ev_at (w) = mn_now; 1848 ev_at (w) = mn_now;
1678 1849
1679 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.));
1680 1851
1681 ANHE_at_cache (timers [HEAP0]); 1852 ANHE_at_cache (timers [HEAP0]);
1682 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);
1683 } 1860 }
1684 else 1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686 1862
1687 EV_FREQUENT_CHECK;
1688 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1863 feed_reverse_done (EV_A_ EV_TIMEOUT);
1689 } 1864 }
1690} 1865}
1691 1866
1692#if EV_PERIODIC_ENABLE 1867#if EV_PERIODIC_ENABLE
1693void inline_size 1868/* make periodics pending */
1869inline_size void
1694periodics_reify (EV_P) 1870periodics_reify (EV_P)
1695{ 1871{
1696 EV_FREQUENT_CHECK; 1872 EV_FREQUENT_CHECK;
1873
1697 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698 { 1875 {
1699 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1876 int feed_count = 0;
1700 1877
1701 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1878 do
1702
1703 /* first reschedule or stop timer */
1704 if (w->reschedule_cb)
1705 { 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 {
1706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1887 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 1888
1708 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));
1709 1890
1710 ANHE_at_cache (periodics [HEAP0]); 1891 ANHE_at_cache (periodics [HEAP0]);
1711 downheap (periodics, periodiccnt, HEAP0); 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
1712 EV_FREQUENT_CHECK; 1916 EV_FREQUENT_CHECK;
1917 feed_reverse (EV_A_ (W)w);
1713 } 1918 }
1714 else if (w->interval) 1919 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715 {
1716 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717 /* if next trigger time is not sufficiently in the future, put it there */
1718 /* this might happen because of floating point inexactness */
1719 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720 {
1721 ev_at (w) += w->interval;
1722 1920
1723 /* if interval is unreasonably low we might still have a time in the past */
1724 /* so correct this. this will make the periodic very inexact, but the user */
1725 /* has effectively asked to get triggered more often than possible */
1726 if (ev_at (w) < ev_rt_now)
1727 ev_at (w) = ev_rt_now;
1728 }
1729
1730 ANHE_at_cache (periodics [HEAP0]);
1731 downheap (periodics, periodiccnt, HEAP0);
1732 }
1733 else
1734 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736 EV_FREQUENT_CHECK;
1737 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1921 feed_reverse_done (EV_A_ EV_PERIODIC);
1738 } 1922 }
1739} 1923}
1740 1924
1925/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741static void noinline 1927static void noinline
1742periodics_reschedule (EV_P) 1928periodics_reschedule (EV_P)
1743{ 1929{
1744 int i; 1930 int i;
1745 1931
… …
1758 1944
1759 reheap (periodics, periodiccnt); 1945 reheap (periodics, periodiccnt);
1760} 1946}
1761#endif 1947#endif
1762 1948
1763void inline_speed 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)
1956 {
1957 ANHE *he = timers + i + HEAP0;
1958 ANHE_w (*he)->at += adjust;
1959 ANHE_at_cache (*he);
1960 }
1961}
1962
1963/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */
1965inline_speed void
1764time_update (EV_P_ ev_tstamp max_block) 1966time_update (EV_P_ ev_tstamp max_block)
1765{ 1967{
1766 int i;
1767
1768#if EV_USE_MONOTONIC 1968#if EV_USE_MONOTONIC
1769 if (expect_true (have_monotonic)) 1969 if (expect_true (have_monotonic))
1770 { 1970 {
1971 int i;
1771 ev_tstamp odiff = rtmn_diff; 1972 ev_tstamp odiff = rtmn_diff;
1772 1973
1773 mn_now = get_clock (); 1974 mn_now = get_clock ();
1774 1975
1775 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1976 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1801 ev_rt_now = ev_time (); 2002 ev_rt_now = ev_time ();
1802 mn_now = get_clock (); 2003 mn_now = get_clock ();
1803 now_floor = mn_now; 2004 now_floor = mn_now;
1804 } 2005 }
1805 2006
2007 /* no timer adjustment, as the monotonic clock doesn't jump */
2008 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806# if EV_PERIODIC_ENABLE 2009# if EV_PERIODIC_ENABLE
1807 periodics_reschedule (EV_A); 2010 periodics_reschedule (EV_A);
1808# endif 2011# endif
1809 /* no timer adjustment, as the monotonic clock doesn't jump */
1810 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811 } 2012 }
1812 else 2013 else
1813#endif 2014#endif
1814 { 2015 {
1815 ev_rt_now = ev_time (); 2016 ev_rt_now = ev_time ();
1816 2017
1817 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))
1818 { 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);
1819#if EV_PERIODIC_ENABLE 2022#if EV_PERIODIC_ENABLE
1820 periodics_reschedule (EV_A); 2023 periodics_reschedule (EV_A);
1821#endif 2024#endif
1822 /* adjust timers. this is easy, as the offset is the same for all of them */
1823 for (i = 0; i < timercnt; ++i)
1824 {
1825 ANHE *he = timers + i + HEAP0;
1826 ANHE_w (*he)->at += ev_rt_now - mn_now;
1827 ANHE_at_cache (*he);
1828 }
1829 } 2025 }
1830 2026
1831 mn_now = ev_rt_now; 2027 mn_now = ev_rt_now;
1832 } 2028 }
1833} 2029}
1834 2030
1835void 2031void
1836ev_ref (EV_P)
1837{
1838 ++activecnt;
1839}
1840
1841void
1842ev_unref (EV_P)
1843{
1844 --activecnt;
1845}
1846
1847static int loop_done;
1848
1849void
1850ev_loop (EV_P_ int flags) 2032ev_loop (EV_P_ int flags)
1851{ 2033{
2034 ++loop_depth;
2035
1852 loop_done = EVUNLOOP_CANCEL; 2036 loop_done = EVUNLOOP_CANCEL;
1853 2037
1854 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 */
1855 2039
1856 do 2040 do
1857 { 2041 {
2042#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A);
2044#endif
2045
1858#ifndef _WIN32 2046#ifndef _WIN32
1859 if (expect_false (curpid)) /* penalise the forking check even more */ 2047 if (expect_false (curpid)) /* penalise the forking check even more */
1860 if (expect_false (getpid () != curpid)) 2048 if (expect_false (getpid () != curpid))
1861 { 2049 {
1862 curpid = getpid (); 2050 curpid = getpid ();
… …
1879 { 2067 {
1880 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881 call_pending (EV_A); 2069 call_pending (EV_A);
1882 } 2070 }
1883 2071
1884 if (expect_false (!activecnt))
1885 break;
1886
1887 /* we might have forked, so reify kernel state if necessary */ 2072 /* we might have forked, so reify kernel state if necessary */
1888 if (expect_false (postfork)) 2073 if (expect_false (postfork))
1889 loop_fork (EV_A); 2074 loop_fork (EV_A);
1890 2075
1891 /* update fd-related kernel structures */ 2076 /* update fd-related kernel structures */
… …
1896 ev_tstamp waittime = 0.; 2081 ev_tstamp waittime = 0.;
1897 ev_tstamp sleeptime = 0.; 2082 ev_tstamp sleeptime = 0.;
1898 2083
1899 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1900 { 2085 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
1901 /* update time to cancel out callback processing overhead */ 2089 /* update time to cancel out callback processing overhead */
1902 time_update (EV_A_ 1e100); 2090 time_update (EV_A_ 1e100);
1903 2091
1904 waittime = MAX_BLOCKTIME; 2092 waittime = MAX_BLOCKTIME;
1905 2093
… …
1915 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1916 if (waittime > to) waittime = to; 2104 if (waittime > to) waittime = to;
1917 } 2105 }
1918#endif 2106#endif
1919 2107
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */
1920 if (expect_false (waittime < timeout_blocktime)) 2109 if (expect_false (waittime < timeout_blocktime))
1921 waittime = timeout_blocktime; 2110 waittime = timeout_blocktime;
1922 2111
1923 sleeptime = waittime - backend_fudge; 2112 /* extra check because io_blocktime is commonly 0 */
1924
1925 if (expect_true (sleeptime > io_blocktime)) 2113 if (expect_false (io_blocktime))
1926 sleeptime = io_blocktime;
1927
1928 if (sleeptime)
1929 { 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 {
1930 ev_sleep (sleeptime); 2122 ev_sleep (sleeptime);
1931 waittime -= sleeptime; 2123 waittime -= sleeptime;
2124 }
1932 } 2125 }
1933 } 2126 }
1934 2127
1935 ++loop_count; 2128 ++loop_count;
1936 backend_poll (EV_A_ waittime); 2129 backend_poll (EV_A_ waittime);
… …
1962 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1963 )); 2156 ));
1964 2157
1965 if (loop_done == EVUNLOOP_ONE) 2158 if (loop_done == EVUNLOOP_ONE)
1966 loop_done = EVUNLOOP_CANCEL; 2159 loop_done = EVUNLOOP_CANCEL;
2160
2161 --loop_depth;
1967} 2162}
1968 2163
1969void 2164void
1970ev_unloop (EV_P_ int how) 2165ev_unloop (EV_P_ int how)
1971{ 2166{
1972 loop_done = how; 2167 loop_done = how;
1973} 2168}
1974 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
1975/*****************************************************************************/ 2207/*****************************************************************************/
2208/* singly-linked list management, used when the expected list length is short */
1976 2209
1977void inline_size 2210inline_size void
1978wlist_add (WL *head, WL elem) 2211wlist_add (WL *head, WL elem)
1979{ 2212{
1980 elem->next = *head; 2213 elem->next = *head;
1981 *head = elem; 2214 *head = elem;
1982} 2215}
1983 2216
1984void inline_size 2217inline_size void
1985wlist_del (WL *head, WL elem) 2218wlist_del (WL *head, WL elem)
1986{ 2219{
1987 while (*head) 2220 while (*head)
1988 { 2221 {
1989 if (*head == elem) 2222 if (*head == elem)
… …
1994 2227
1995 head = &(*head)->next; 2228 head = &(*head)->next;
1996 } 2229 }
1997} 2230}
1998 2231
1999void inline_speed 2232/* internal, faster, version of ev_clear_pending */
2233inline_speed void
2000clear_pending (EV_P_ W w) 2234clear_pending (EV_P_ W w)
2001{ 2235{
2002 if (w->pending) 2236 if (w->pending)
2003 { 2237 {
2004 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2238 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005 w->pending = 0; 2239 w->pending = 0;
2006 } 2240 }
2007} 2241}
2008 2242
2009int 2243int
… …
2013 int pending = w_->pending; 2247 int pending = w_->pending;
2014 2248
2015 if (expect_true (pending)) 2249 if (expect_true (pending))
2016 { 2250 {
2017 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2251 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2252 p->w = (W)&pending_w;
2018 w_->pending = 0; 2253 w_->pending = 0;
2019 p->w = 0;
2020 return p->events; 2254 return p->events;
2021 } 2255 }
2022 else 2256 else
2023 return 0; 2257 return 0;
2024} 2258}
2025 2259
2026void inline_size 2260inline_size void
2027pri_adjust (EV_P_ W w) 2261pri_adjust (EV_P_ W w)
2028{ 2262{
2029 int pri = w->priority; 2263 int pri = w->priority;
2030 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032 w->priority = pri; 2266 w->priority = pri;
2033} 2267}
2034 2268
2035void inline_speed 2269inline_speed void
2036ev_start (EV_P_ W w, int active) 2270ev_start (EV_P_ W w, int active)
2037{ 2271{
2038 pri_adjust (EV_A_ w); 2272 pri_adjust (EV_A_ w);
2039 w->active = active; 2273 w->active = active;
2040 ev_ref (EV_A); 2274 ev_ref (EV_A);
2041} 2275}
2042 2276
2043void inline_size 2277inline_size void
2044ev_stop (EV_P_ W w) 2278ev_stop (EV_P_ W w)
2045{ 2279{
2046 ev_unref (EV_A); 2280 ev_unref (EV_A);
2047 w->active = 0; 2281 w->active = 0;
2048} 2282}
… …
2055 int fd = w->fd; 2289 int fd = w->fd;
2056 2290
2057 if (expect_false (ev_is_active (w))) 2291 if (expect_false (ev_is_active (w)))
2058 return; 2292 return;
2059 2293
2060 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))));
2061 2296
2062 EV_FREQUENT_CHECK; 2297 EV_FREQUENT_CHECK;
2063 2298
2064 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
2065 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066 wlist_add (&anfds[fd].head, (WL)w); 2301 wlist_add (&anfds[fd].head, (WL)w);
2067 2302
2068 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2069 w->events &= ~EV_IOFDSET; 2304 w->events &= ~EV__IOFDSET;
2070 2305
2071 EV_FREQUENT_CHECK; 2306 EV_FREQUENT_CHECK;
2072} 2307}
2073 2308
2074void noinline 2309void noinline
… …
2076{ 2311{
2077 clear_pending (EV_A_ (W)w); 2312 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2313 if (expect_false (!ev_is_active (w)))
2079 return; 2314 return;
2080 2315
2081 assert (("ev_io_stop 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));
2082 2317
2083 EV_FREQUENT_CHECK; 2318 EV_FREQUENT_CHECK;
2084 2319
2085 wlist_del (&anfds[w->fd].head, (WL)w); 2320 wlist_del (&anfds[w->fd].head, (WL)w);
2086 ev_stop (EV_A_ (W)w); 2321 ev_stop (EV_A_ (W)w);
… …
2096 if (expect_false (ev_is_active (w))) 2331 if (expect_false (ev_is_active (w)))
2097 return; 2332 return;
2098 2333
2099 ev_at (w) += mn_now; 2334 ev_at (w) += mn_now;
2100 2335
2101 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.));
2102 2337
2103 EV_FREQUENT_CHECK; 2338 EV_FREQUENT_CHECK;
2104 2339
2105 ++timercnt; 2340 ++timercnt;
2106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2109 ANHE_at_cache (timers [ev_active (w)]); 2344 ANHE_at_cache (timers [ev_active (w)]);
2110 upheap (timers, ev_active (w)); 2345 upheap (timers, ev_active (w));
2111 2346
2112 EV_FREQUENT_CHECK; 2347 EV_FREQUENT_CHECK;
2113 2348
2114 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115} 2350}
2116 2351
2117void noinline 2352void noinline
2118ev_timer_stop (EV_P_ ev_timer *w) 2353ev_timer_stop (EV_P_ ev_timer *w)
2119{ 2354{
… …
2124 EV_FREQUENT_CHECK; 2359 EV_FREQUENT_CHECK;
2125 2360
2126 { 2361 {
2127 int active = ev_active (w); 2362 int active = ev_active (w);
2128 2363
2129 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2364 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130 2365
2131 --timercnt; 2366 --timercnt;
2132 2367
2133 if (expect_true (active < timercnt + HEAP0)) 2368 if (expect_true (active < timercnt + HEAP0))
2134 { 2369 {
… …
2178 2413
2179 if (w->reschedule_cb) 2414 if (w->reschedule_cb)
2180 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181 else if (w->interval) 2416 else if (w->interval)
2182 { 2417 {
2183 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.));
2184 /* 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 */
2185 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;
2186 } 2421 }
2187 else 2422 else
2188 ev_at (w) = w->offset; 2423 ev_at (w) = w->offset;
… …
2196 ANHE_at_cache (periodics [ev_active (w)]); 2431 ANHE_at_cache (periodics [ev_active (w)]);
2197 upheap (periodics, ev_active (w)); 2432 upheap (periodics, ev_active (w));
2198 2433
2199 EV_FREQUENT_CHECK; 2434 EV_FREQUENT_CHECK;
2200 2435
2201 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2202} 2437}
2203 2438
2204void noinline 2439void noinline
2205ev_periodic_stop (EV_P_ ev_periodic *w) 2440ev_periodic_stop (EV_P_ ev_periodic *w)
2206{ 2441{
… …
2211 EV_FREQUENT_CHECK; 2446 EV_FREQUENT_CHECK;
2212 2447
2213 { 2448 {
2214 int active = ev_active (w); 2449 int active = ev_active (w);
2215 2450
2216 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2451 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217 2452
2218 --periodiccnt; 2453 --periodiccnt;
2219 2454
2220 if (expect_true (active < periodiccnt + HEAP0)) 2455 if (expect_true (active < periodiccnt + HEAP0))
2221 { 2456 {
… …
2244 2479
2245void noinline 2480void noinline
2246ev_signal_start (EV_P_ ev_signal *w) 2481ev_signal_start (EV_P_ ev_signal *w)
2247{ 2482{
2248#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
2249 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));
2250#endif 2485#endif
2251 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
2252 return; 2487 return;
2253 2488
2254 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));
2255 2490
2256 evpipe_init (EV_A); 2491 evpipe_init (EV_A);
2257 2492
2258 EV_FREQUENT_CHECK; 2493 EV_FREQUENT_CHECK;
2259 2494
… …
2262 sigset_t full, prev; 2497 sigset_t full, prev;
2263 sigfillset (&full); 2498 sigfillset (&full);
2264 sigprocmask (SIG_SETMASK, &full, &prev); 2499 sigprocmask (SIG_SETMASK, &full, &prev);
2265#endif 2500#endif
2266 2501
2267 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268 2503
2269#ifndef _WIN32 2504#ifndef _WIN32
2270 sigprocmask (SIG_SETMASK, &prev, 0); 2505 sigprocmask (SIG_SETMASK, &prev, 0);
2271#endif 2506#endif
2272 } 2507 }
… …
2310 2545
2311void 2546void
2312ev_child_start (EV_P_ ev_child *w) 2547ev_child_start (EV_P_ ev_child *w)
2313{ 2548{
2314#if EV_MULTIPLICITY 2549#if EV_MULTIPLICITY
2315 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));
2316#endif 2551#endif
2317 if (expect_false (ev_is_active (w))) 2552 if (expect_false (ev_is_active (w)))
2318 return; 2553 return;
2319 2554
2320 EV_FREQUENT_CHECK; 2555 EV_FREQUENT_CHECK;
… …
2345# ifdef _WIN32 2580# ifdef _WIN32
2346# undef lstat 2581# undef lstat
2347# define lstat(a,b) _stati64 (a,b) 2582# define lstat(a,b) _stati64 (a,b)
2348# endif 2583# endif
2349 2584
2350#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 */
2351#define MIN_STAT_INTERVAL 0.1074891 2587#define MIN_STAT_INTERVAL 0.1074891
2352 2588
2353static 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);
2354 2590
2355#if EV_USE_INOTIFY 2591#if EV_USE_INOTIFY
2356# define EV_INOTIFY_BUFSIZE 8192 2592# define EV_INOTIFY_BUFSIZE 8192
… …
2360{ 2596{
2361 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);
2362 2598
2363 if (w->wd < 0) 2599 if (w->wd < 0)
2364 { 2600 {
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365 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 */
2366 2603
2367 /* monitor some parent directory for speedup hints */ 2604 /* monitor some parent directory for speedup hints */
2368 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2369 /* but an efficiency issue only */ 2606 /* but an efficiency issue only */
2370 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371 { 2608 {
2372 char path [4096]; 2609 char path [4096];
2373 strcpy (path, w->path); 2610 strcpy (path, w->path);
… …
2377 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2614 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2615 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379 2616
2380 char *pend = strrchr (path, '/'); 2617 char *pend = strrchr (path, '/');
2381 2618
2382 if (!pend) 2619 if (!pend || pend == path)
2383 break; /* whoops, no '/', complain to your admin */ 2620 break;
2384 2621
2385 *pend = 0; 2622 *pend = 0;
2386 w->wd = inotify_add_watch (fs_fd, path, mask); 2623 w->wd = inotify_add_watch (fs_fd, path, mask);
2387 } 2624 }
2388 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389 } 2626 }
2390 } 2627 }
2391 else
2392 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393 2628
2394 if (w->wd >= 0) 2629 if (w->wd >= 0)
2630 {
2395 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 }
2396} 2650}
2397 2651
2398static void noinline 2652static void noinline
2399infy_del (EV_P_ ev_stat *w) 2653infy_del (EV_P_ ev_stat *w)
2400{ 2654{
… …
2414 2668
2415static void noinline 2669static void noinline
2416infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417{ 2671{
2418 if (slot < 0) 2672 if (slot < 0)
2419 /* overflow, need to check for all hahs slots */ 2673 /* overflow, need to check for all hash slots */
2420 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421 infy_wd (EV_A_ slot, wd, ev); 2675 infy_wd (EV_A_ slot, wd, ev);
2422 else 2676 else
2423 { 2677 {
2424 WL w_; 2678 WL w_;
… …
2430 2684
2431 if (w->wd == wd || wd == -1) 2685 if (w->wd == wd || wd == -1)
2432 { 2686 {
2433 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434 { 2688 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435 w->wd = -1; 2690 w->wd = -1;
2436 infy_add (EV_A_ w); /* re-add, no matter what */ 2691 infy_add (EV_A_ w); /* re-add, no matter what */
2437 } 2692 }
2438 2693
2439 stat_timer_cb (EV_A_ &w->timer, 0); 2694 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2452 2707
2453 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)
2454 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2709 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455} 2710}
2456 2711
2457void 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
2458infy_init (EV_P) 2736infy_init (EV_P)
2459{ 2737{
2460 if (fs_fd != -2) 2738 if (fs_fd != -2)
2461 return; 2739 return;
2740
2741 fs_fd = -1;
2742
2743 check_2625 (EV_A);
2462 2744
2463 fs_fd = inotify_init (); 2745 fs_fd = inotify_init ();
2464 2746
2465 if (fs_fd >= 0) 2747 if (fs_fd >= 0)
2466 { 2748 {
… …
2468 ev_set_priority (&fs_w, EV_MAXPRI); 2750 ev_set_priority (&fs_w, EV_MAXPRI);
2469 ev_io_start (EV_A_ &fs_w); 2751 ev_io_start (EV_A_ &fs_w);
2470 } 2752 }
2471} 2753}
2472 2754
2473void inline_size 2755inline_size void
2474infy_fork (EV_P) 2756infy_fork (EV_P)
2475{ 2757{
2476 int slot; 2758 int slot;
2477 2759
2478 if (fs_fd < 0) 2760 if (fs_fd < 0)
… …
2494 w->wd = -1; 2776 w->wd = -1;
2495 2777
2496 if (fs_fd >= 0) 2778 if (fs_fd >= 0)
2497 infy_add (EV_A_ w); /* re-add, no matter what */ 2779 infy_add (EV_A_ w); /* re-add, no matter what */
2498 else 2780 else
2499 ev_timer_start (EV_A_ &w->timer); 2781 ev_timer_again (EV_A_ &w->timer);
2500 } 2782 }
2501
2502 } 2783 }
2503} 2784}
2504 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)
2505#endif 2792#endif
2506 2793
2507void 2794void
2508ev_stat_stat (EV_P_ ev_stat *w) 2795ev_stat_stat (EV_P_ ev_stat *w)
2509{ 2796{
… …
2536 || w->prev.st_atime != w->attr.st_atime 2823 || w->prev.st_atime != w->attr.st_atime
2537 || w->prev.st_mtime != w->attr.st_mtime 2824 || w->prev.st_mtime != w->attr.st_mtime
2538 || w->prev.st_ctime != w->attr.st_ctime 2825 || w->prev.st_ctime != w->attr.st_ctime
2539 ) { 2826 ) {
2540 #if EV_USE_INOTIFY 2827 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0)
2829 {
2541 infy_del (EV_A_ w); 2830 infy_del (EV_A_ w);
2542 infy_add (EV_A_ w); 2831 infy_add (EV_A_ w);
2543 ev_stat_stat (EV_A_ w); /* avoid race... */ 2832 ev_stat_stat (EV_A_ w); /* avoid race... */
2833 }
2544 #endif 2834 #endif
2545 2835
2546 ev_feed_event (EV_A_ w, EV_STAT); 2836 ev_feed_event (EV_A_ w, EV_STAT);
2547 } 2837 }
2548} 2838}
… …
2551ev_stat_start (EV_P_ ev_stat *w) 2841ev_stat_start (EV_P_ ev_stat *w)
2552{ 2842{
2553 if (expect_false (ev_is_active (w))) 2843 if (expect_false (ev_is_active (w)))
2554 return; 2844 return;
2555 2845
2556 /* since we use memcmp, we need to clear any padding data etc. */
2557 memset (&w->prev, 0, sizeof (ev_statdata));
2558 memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560 ev_stat_stat (EV_A_ w); 2846 ev_stat_stat (EV_A_ w);
2561 2847
2848 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562 if (w->interval < MIN_STAT_INTERVAL) 2849 w->interval = MIN_STAT_INTERVAL;
2563 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564 2850
2565 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);
2566 ev_set_priority (&w->timer, ev_priority (w)); 2852 ev_set_priority (&w->timer, ev_priority (w));
2567 2853
2568#if EV_USE_INOTIFY 2854#if EV_USE_INOTIFY
2569 infy_init (EV_A); 2855 infy_init (EV_A);
2570 2856
2571 if (fs_fd >= 0) 2857 if (fs_fd >= 0)
2572 infy_add (EV_A_ w); 2858 infy_add (EV_A_ w);
2573 else 2859 else
2574#endif 2860#endif
2575 ev_timer_start (EV_A_ &w->timer); 2861 ev_timer_again (EV_A_ &w->timer);
2576 2862
2577 ev_start (EV_A_ (W)w, 1); 2863 ev_start (EV_A_ (W)w, 1);
2578 2864
2579 EV_FREQUENT_CHECK; 2865 EV_FREQUENT_CHECK;
2580} 2866}
… …
2750 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3036 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751 } 3037 }
2752 } 3038 }
2753} 3039}
2754 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
2755#if 0 3058#if 0
2756static void 3059static void
2757embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3060embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758{ 3061{
2759 ev_idle_stop (EV_A_ idle); 3062 ev_idle_stop (EV_A_ idle);
… …
2766 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2767 return; 3070 return;
2768 3071
2769 { 3072 {
2770 struct ev_loop *loop = w->other; 3073 struct ev_loop *loop = w->other;
2771 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 ()));
2772 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);
2773 } 3076 }
2774 3077
2775 EV_FREQUENT_CHECK; 3078 EV_FREQUENT_CHECK;
2776 3079
… …
2779 3082
2780 ev_prepare_init (&w->prepare, embed_prepare_cb); 3083 ev_prepare_init (&w->prepare, embed_prepare_cb);
2781 ev_set_priority (&w->prepare, EV_MINPRI); 3084 ev_set_priority (&w->prepare, EV_MINPRI);
2782 ev_prepare_start (EV_A_ &w->prepare); 3085 ev_prepare_start (EV_A_ &w->prepare);
2783 3086
3087 ev_fork_init (&w->fork, embed_fork_cb);
3088 ev_fork_start (EV_A_ &w->fork);
3089
2784 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3090 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785 3091
2786 ev_start (EV_A_ (W)w, 1); 3092 ev_start (EV_A_ (W)w, 1);
2787 3093
2788 EV_FREQUENT_CHECK; 3094 EV_FREQUENT_CHECK;
… …
2795 if (expect_false (!ev_is_active (w))) 3101 if (expect_false (!ev_is_active (w)))
2796 return; 3102 return;
2797 3103
2798 EV_FREQUENT_CHECK; 3104 EV_FREQUENT_CHECK;
2799 3105
2800 ev_io_stop (EV_A_ &w->io); 3106 ev_io_stop (EV_A_ &w->io);
2801 ev_prepare_stop (EV_A_ &w->prepare); 3107 ev_prepare_stop (EV_A_ &w->prepare);
2802 3108 ev_fork_stop (EV_A_ &w->fork);
2803 ev_stop (EV_A_ (W)w);
2804 3109
2805 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2806} 3111}
2807#endif 3112#endif
2808 3113
… …
2905once_cb (EV_P_ struct ev_once *once, int revents) 3210once_cb (EV_P_ struct ev_once *once, int revents)
2906{ 3211{
2907 void (*cb)(int revents, void *arg) = once->cb; 3212 void (*cb)(int revents, void *arg) = once->cb;
2908 void *arg = once->arg; 3213 void *arg = once->arg;
2909 3214
2910 ev_io_stop (EV_A_ &once->io); 3215 ev_io_stop (EV_A_ &once->io);
2911 ev_timer_stop (EV_A_ &once->to); 3216 ev_timer_stop (EV_A_ &once->to);
2912 ev_free (once); 3217 ev_free (once);
2913 3218
2914 cb (revents, arg); 3219 cb (revents, arg);
2915} 3220}
2916 3221
2917static void 3222static void
2918once_cb_io (EV_P_ ev_io *w, int revents) 3223once_cb_io (EV_P_ ev_io *w, int revents)
2919{ 3224{
2920 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));
2921} 3228}
2922 3229
2923static void 3230static void
2924once_cb_to (EV_P_ ev_timer *w, int revents) 3231once_cb_to (EV_P_ ev_timer *w, int revents)
2925{ 3232{
2926 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));
2927} 3236}
2928 3237
2929void 3238void
2930ev_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)
2931{ 3240{
… …
2953 ev_timer_set (&once->to, timeout, 0.); 3262 ev_timer_set (&once->to, timeout, 0.);
2954 ev_timer_start (EV_A_ &once->to); 3263 ev_timer_start (EV_A_ &once->to);
2955 } 3264 }
2956} 3265}
2957 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
2958#if EV_MULTIPLICITY 3375#if EV_MULTIPLICITY
2959 #include "ev_wrap.h" 3376 #include "ev_wrap.h"
2960#endif 3377#endif
2961 3378
2962#ifdef __cplusplus 3379#ifdef __cplusplus

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