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Comparing libev/ev.c (file contents):
Revision 1.253 by root, Sat May 31 03:13:27 2008 UTC vs.
Revision 1.301 by root, Wed Jul 15 16:58:53 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# 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
… …
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 */
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
167 190
168#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 193# define EV_USE_MONOTONIC 1
171# else 194# else
172# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
173# endif 196# endif
174#endif 197#endif
175 198
176#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 201#endif
179 202
180#ifndef EV_USE_NANOSLEEP 203#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 204# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 205# define EV_USE_NANOSLEEP 1
… …
261 284
262#ifndef EV_HEAP_CACHE_AT 285#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL 286# define EV_HEAP_CACHE_AT !EV_MINIMAL
264#endif 287#endif
265 288
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
266/* 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 */
267 304
268#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
… …
285# include <sys/select.h> 322# include <sys/select.h>
286# endif 323# endif
287#endif 324#endif
288 325
289#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
290# 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
291#endif 335#endif
292 336
293#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 338# include <winsock.h>
295#endif 339#endif
… …
347# define inline_speed static noinline 391# define inline_speed static noinline
348#else 392#else
349# define inline_speed static inline 393# define inline_speed static inline
350#endif 394#endif
351 395
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397
398#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0)
400#else
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
354 403
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
357 406
358typedef ev_watcher *W; 407typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
361 410
362#define ev_active(w) ((W)(w))->active 411#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 412#define ev_at(w) ((WT)(w))->at
364 413
365#if EV_USE_MONOTONIC 414#if EV_USE_REALTIME
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 415/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */ 416/* giving it a reasonably high chance of working on typical architetcures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif
419
420#if EV_USE_MONOTONIC
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369#endif 422#endif
370 423
371#ifdef _WIN32 424#ifdef _WIN32
372# include "ev_win32.c" 425# include "ev_win32.c"
… …
381{ 434{
382 syserr_cb = cb; 435 syserr_cb = cb;
383} 436}
384 437
385static void noinline 438static void noinline
386syserr (const char *msg) 439ev_syserr (const char *msg)
387{ 440{
388 if (!msg) 441 if (!msg)
389 msg = "(libev) system error"; 442 msg = "(libev) system error";
390 443
391 if (syserr_cb) 444 if (syserr_cb)
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
439 492
440/*****************************************************************************/ 493/*****************************************************************************/
441 494
495/* set in reify when reification needed */
496#define EV_ANFD_REIFY 1
497
498/* file descriptor info structure */
442typedef struct 499typedef struct
443{ 500{
444 WL head; 501 WL head;
445 unsigned char events; 502 unsigned char events; /* the events watched for */
503 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 505 unsigned char unused;
506#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif
447#if EV_SELECT_IS_WINSOCKET 509#if EV_SELECT_IS_WINSOCKET
448 SOCKET handle; 510 SOCKET handle;
449#endif 511#endif
450} ANFD; 512} ANFD;
451 513
514/* stores the pending event set for a given watcher */
452typedef struct 515typedef struct
453{ 516{
454 W w; 517 W w;
455 int events; 518 int events; /* the pending event set for the given watcher */
456} ANPENDING; 519} ANPENDING;
457 520
458#if EV_USE_INOTIFY 521#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 522/* hash table entry per inotify-id */
460typedef struct 523typedef struct
… …
463} ANFS; 526} ANFS;
464#endif 527#endif
465 528
466/* Heap Entry */ 529/* Heap Entry */
467#if EV_HEAP_CACHE_AT 530#if EV_HEAP_CACHE_AT
531 /* a heap element */
468 typedef struct { 532 typedef struct {
469 ev_tstamp at; 533 ev_tstamp at;
470 WT w; 534 WT w;
471 } ANHE; 535 } ANHE;
472 536
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 537 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 538 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 539 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 540#else
541 /* a heap element */
477 typedef WT ANHE; 542 typedef WT ANHE;
478 543
479 #define ANHE_w(he) (he) 544 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 545 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 546 #define ANHE_at_cache(he)
… …
505 570
506 static int ev_default_loop_ptr; 571 static int ev_default_loop_ptr;
507 572
508#endif 573#endif
509 574
575#if EV_MINIMAL < 2
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else
580# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif
584
585#define EVUNLOOP_RECURSE 0x80
586
510/*****************************************************************************/ 587/*****************************************************************************/
511 588
589#ifndef EV_HAVE_EV_TIME
512ev_tstamp 590ev_tstamp
513ev_time (void) 591ev_time (void)
514{ 592{
515#if EV_USE_REALTIME 593#if EV_USE_REALTIME
594 if (expect_true (have_realtime))
595 {
516 struct timespec ts; 596 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 597 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 598 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 599 }
600#endif
601
520 struct timeval tv; 602 struct timeval tv;
521 gettimeofday (&tv, 0); 603 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 604 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 605}
606#endif
525 607
526ev_tstamp inline_size 608inline_size ev_tstamp
527get_clock (void) 609get_clock (void)
528{ 610{
529#if EV_USE_MONOTONIC 611#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 612 if (expect_true (have_monotonic))
531 { 613 {
… …
564 struct timeval tv; 646 struct timeval tv;
565 647
566 tv.tv_sec = (time_t)delay; 648 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568 650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */
569 select (0, 0, 0, 0, &tv); 654 select (0, 0, 0, 0, &tv);
570#endif 655#endif
571 } 656 }
572} 657}
573 658
574/*****************************************************************************/ 659/*****************************************************************************/
575 660
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 662
578int inline_size 663/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */
665inline_size int
579array_nextsize (int elem, int cur, int cnt) 666array_nextsize (int elem, int cur, int cnt)
580{ 667{
581 int ncur = cur + 1; 668 int ncur = cur + 1;
582 669
583 do 670 do
… …
600array_realloc (int elem, void *base, int *cur, int cnt) 687array_realloc (int elem, void *base, int *cur, int cnt)
601{ 688{
602 *cur = array_nextsize (elem, *cur, cnt); 689 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 690 return ev_realloc (base, elem * *cur);
604} 691}
692
693#define array_init_zero(base,count) \
694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 695
606#define array_needsize(type,base,cur,cnt,init) \ 696#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 697 if (expect_false ((cnt) > (cur))) \
608 { \ 698 { \
609 int ocur_ = (cur); \ 699 int ocur_ = (cur); \
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 711 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 712 }
623#endif 713#endif
624 714
625#define array_free(stem, idx) \ 715#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 717
628/*****************************************************************************/ 718/*****************************************************************************/
719
720/* dummy callback for pending events */
721static void noinline
722pendingcb (EV_P_ ev_prepare *w, int revents)
723{
724}
629 725
630void noinline 726void noinline
631ev_feed_event (EV_P_ void *w, int revents) 727ev_feed_event (EV_P_ void *w, int revents)
632{ 728{
633 W w_ = (W)w; 729 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 738 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 739 pendings [pri][w_->pending - 1].events = revents;
644 } 740 }
645} 741}
646 742
647void inline_speed 743inline_speed void
744feed_reverse (EV_P_ W w)
745{
746 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
747 rfeeds [rfeedcnt++] = w;
748}
749
750inline_size void
751feed_reverse_done (EV_P_ int revents)
752{
753 do
754 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
755 while (rfeedcnt);
756}
757
758inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 759queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 760{
650 int i; 761 int i;
651 762
652 for (i = 0; i < eventcnt; ++i) 763 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 764 ev_feed_event (EV_A_ events [i], type);
654} 765}
655 766
656/*****************************************************************************/ 767/*****************************************************************************/
657 768
658void inline_size 769inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 770fd_event_nc (EV_P_ int fd, int revents)
673{ 771{
674 ANFD *anfd = anfds + fd; 772 ANFD *anfd = anfds + fd;
675 ev_io *w; 773 ev_io *w;
676 774
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 779 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 780 ev_feed_event (EV_A_ (W)w, ev);
683 } 781 }
684} 782}
685 783
784/* do not submit kernel events for fds that have reify set */
785/* because that means they changed while we were polling for new events */
786inline_speed void
787fd_event (EV_P_ int fd, int revents)
788{
789 ANFD *anfd = anfds + fd;
790
791 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents);
793}
794
686void 795void
687ev_feed_fd_event (EV_P_ int fd, int revents) 796ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 797{
689 if (fd >= 0 && fd < anfdmax) 798 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 799 fd_event_nc (EV_A_ fd, revents);
691} 800}
692 801
693void inline_size 802/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */
804inline_size void
694fd_reify (EV_P) 805fd_reify (EV_P)
695{ 806{
696 int i; 807 int i;
697 808
698 for (i = 0; i < fdchangecnt; ++i) 809 for (i = 0; i < fdchangecnt; ++i)
… …
707 events |= (unsigned char)w->events; 818 events |= (unsigned char)w->events;
708 819
709#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET
710 if (events) 821 if (events)
711 { 822 {
712 unsigned long argp; 823 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE 824 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else 826 #else
716 anfd->handle = _get_osfhandle (fd); 827 anfd->handle = _get_osfhandle (fd);
717 #endif 828 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719 } 830 }
720#endif 831#endif
721 832
722 { 833 {
723 unsigned char o_events = anfd->events; 834 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify; 835 unsigned char o_reify = anfd->reify;
725 836
726 anfd->reify = 0; 837 anfd->reify = 0;
727 anfd->events = events; 838 anfd->events = events;
728 839
729 if (o_events != events || o_reify & EV_IOFDSET) 840 if (o_events != events || o_reify & EV__IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 841 backend_modify (EV_A_ fd, o_events, events);
731 } 842 }
732 } 843 }
733 844
734 fdchangecnt = 0; 845 fdchangecnt = 0;
735} 846}
736 847
737void inline_size 848/* something about the given fd changed */
849inline_size void
738fd_change (EV_P_ int fd, int flags) 850fd_change (EV_P_ int fd, int flags)
739{ 851{
740 unsigned char reify = anfds [fd].reify; 852 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 853 anfds [fd].reify |= flags;
742 854
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 858 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 859 fdchanges [fdchangecnt - 1] = fd;
748 } 860 }
749} 861}
750 862
751void inline_speed 863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void
752fd_kill (EV_P_ int fd) 865fd_kill (EV_P_ int fd)
753{ 866{
754 ev_io *w; 867 ev_io *w;
755 868
756 while ((w = (ev_io *)anfds [fd].head)) 869 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 871 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 873 }
761} 874}
762 875
763int inline_size 876/* check whether the given fd is atcually valid, for error recovery */
877inline_size int
764fd_valid (int fd) 878fd_valid (int fd)
765{ 879{
766#ifdef _WIN32 880#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 881 return _get_osfhandle (fd) != -1;
768#else 882#else
… …
776{ 890{
777 int fd; 891 int fd;
778 892
779 for (fd = 0; fd < anfdmax; ++fd) 893 for (fd = 0; fd < anfdmax; ++fd)
780 if (anfds [fd].events) 894 if (anfds [fd].events)
781 if (!fd_valid (fd) == -1 && errno == EBADF) 895 if (!fd_valid (fd) && errno == EBADF)
782 fd_kill (EV_A_ fd); 896 fd_kill (EV_A_ fd);
783} 897}
784 898
785/* called on ENOMEM in select/poll to kill some fds and retry */ 899/* called on ENOMEM in select/poll to kill some fds and retry */
786static void noinline 900static void noinline
… …
804 918
805 for (fd = 0; fd < anfdmax; ++fd) 919 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 920 if (anfds [fd].events)
807 { 921 {
808 anfds [fd].events = 0; 922 anfds [fd].events = 0;
923 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 925 }
811} 926}
812 927
813/*****************************************************************************/ 928/*****************************************************************************/
814 929
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 945#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 946#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 947#define UPHEAP_DONE(p,k) ((p) == (k))
833 948
834/* away from the root */ 949/* away from the root */
835void inline_speed 950inline_speed void
836downheap (ANHE *heap, int N, int k) 951downheap (ANHE *heap, int N, int k)
837{ 952{
838 ANHE he = heap [k]; 953 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 954 ANHE *E = heap + N + HEAP0;
840 955
… …
880#define HEAP0 1 995#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 996#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 997#define UPHEAP_DONE(p,k) (!(p))
883 998
884/* away from the root */ 999/* away from the root */
885void inline_speed 1000inline_speed void
886downheap (ANHE *heap, int N, int k) 1001downheap (ANHE *heap, int N, int k)
887{ 1002{
888 ANHE he = heap [k]; 1003 ANHE he = heap [k];
889 1004
890 for (;;) 1005 for (;;)
… …
910 ev_active (ANHE_w (he)) = k; 1025 ev_active (ANHE_w (he)) = k;
911} 1026}
912#endif 1027#endif
913 1028
914/* towards the root */ 1029/* towards the root */
915void inline_speed 1030inline_speed void
916upheap (ANHE *heap, int k) 1031upheap (ANHE *heap, int k)
917{ 1032{
918 ANHE he = heap [k]; 1033 ANHE he = heap [k];
919 1034
920 for (;;) 1035 for (;;)
… …
931 1046
932 heap [k] = he; 1047 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1048 ev_active (ANHE_w (he)) = k;
934} 1049}
935 1050
936void inline_size 1051/* move an element suitably so it is in a correct place */
1052inline_size void
937adjustheap (ANHE *heap, int N, int k) 1053adjustheap (ANHE *heap, int N, int k)
938{ 1054{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
940 upheap (heap, k); 1056 upheap (heap, k);
941 else 1057 else
942 downheap (heap, N, k); 1058 downheap (heap, N, k);
943} 1059}
944 1060
945/* rebuild the heap: this function is used only once and executed rarely */ 1061/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1062inline_size void
947reheap (ANHE *heap, int N) 1063reheap (ANHE *heap, int N)
948{ 1064{
949 int i; 1065 int i;
950 1066
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1067 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1070 upheap (heap, i + HEAP0);
955} 1071}
956 1072
957/*****************************************************************************/ 1073/*****************************************************************************/
958 1074
1075/* associate signal watchers to a signal signal */
959typedef struct 1076typedef struct
960{ 1077{
961 WL head; 1078 WL head;
962 EV_ATOMIC_T gotsig; 1079 EV_ATOMIC_T gotsig;
963} ANSIG; 1080} ANSIG;
… …
965static ANSIG *signals; 1082static ANSIG *signals;
966static int signalmax; 1083static int signalmax;
967 1084
968static EV_ATOMIC_T gotsig; 1085static EV_ATOMIC_T gotsig;
969 1086
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981
982/*****************************************************************************/ 1087/*****************************************************************************/
983 1088
984void inline_speed 1089/* used to prepare libev internal fd's */
1090/* this is not fork-safe */
1091inline_speed void
985fd_intern (int fd) 1092fd_intern (int fd)
986{ 1093{
987#ifdef _WIN32 1094#ifdef _WIN32
988 int arg = 1; 1095 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else 1097#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC); 1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK); 1099 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif 1100#endif
994} 1101}
995 1102
996static void noinline 1103static void noinline
997evpipe_init (EV_P) 1104evpipe_init (EV_P)
998{ 1105{
999 if (!ev_is_active (&pipeev)) 1106 if (!ev_is_active (&pipe_w))
1000 { 1107 {
1001#if EV_USE_EVENTFD 1108#if EV_USE_EVENTFD
1002 if ((evfd = eventfd (0, 0)) >= 0) 1109 if ((evfd = eventfd (0, 0)) >= 0)
1003 { 1110 {
1004 evpipe [0] = -1; 1111 evpipe [0] = -1;
1005 fd_intern (evfd); 1112 fd_intern (evfd);
1006 ev_io_set (&pipeev, evfd, EV_READ); 1113 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1114 }
1008 else 1115 else
1009#endif 1116#endif
1010 { 1117 {
1011 while (pipe (evpipe)) 1118 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1119 ev_syserr ("(libev) error creating signal/async pipe");
1013 1120
1014 fd_intern (evpipe [0]); 1121 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1122 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1123 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1124 }
1018 1125
1019 ev_io_start (EV_A_ &pipeev); 1126 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1128 }
1022} 1129}
1023 1130
1024void inline_size 1131inline_size void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1133{
1027 if (!*flag) 1134 if (!*flag)
1028 { 1135 {
1029 int old_errno = errno; /* save errno because write might clobber it */ 1136 int old_errno = errno; /* save errno because write might clobber it */
… …
1042 1149
1043 errno = old_errno; 1150 errno = old_errno;
1044 } 1151 }
1045} 1152}
1046 1153
1154/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */
1047static void 1156static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1157pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1158{
1050#if EV_USE_EVENTFD 1159#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1160 if (evfd >= 0)
… …
1107ev_feed_signal_event (EV_P_ int signum) 1216ev_feed_signal_event (EV_P_ int signum)
1108{ 1217{
1109 WL w; 1218 WL w;
1110 1219
1111#if EV_MULTIPLICITY 1220#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113#endif 1222#endif
1114 1223
1115 --signum; 1224 --signum;
1116 1225
1117 if (signum < 0 || signum >= signalmax) 1226 if (signum < 0 || signum >= signalmax)
… …
1133 1242
1134#ifndef WIFCONTINUED 1243#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 1244# define WIFCONTINUED(status) 0
1136#endif 1245#endif
1137 1246
1138void inline_speed 1247/* handle a single child status event */
1248inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 1249child_reap (EV_P_ int chain, int pid, int status)
1140{ 1250{
1141 ev_child *w; 1251 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 1253
… …
1156 1266
1157#ifndef WCONTINUED 1267#ifndef WCONTINUED
1158# define WCONTINUED 0 1268# define WCONTINUED 0
1159#endif 1269#endif
1160 1270
1271/* called on sigchld etc., calls waitpid */
1161static void 1272static void
1162childcb (EV_P_ ev_signal *sw, int revents) 1273childcb (EV_P_ ev_signal *sw, int revents)
1163{ 1274{
1164 int pid, status; 1275 int pid, status;
1165 1276
… …
1246 /* kqueue is borked on everything but netbsd apparently */ 1357 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 1358 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 1359 flags &= ~EVBACKEND_KQUEUE;
1249#endif 1360#endif
1250#ifdef __APPLE__ 1361#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 1362 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1253#endif 1365#endif
1254 1366
1255 return flags; 1367 return flags;
1256} 1368}
1257 1369
… …
1271ev_backend (EV_P) 1383ev_backend (EV_P)
1272{ 1384{
1273 return backend; 1385 return backend;
1274} 1386}
1275 1387
1388#if EV_MINIMAL < 2
1276unsigned int 1389unsigned int
1277ev_loop_count (EV_P) 1390ev_loop_count (EV_P)
1278{ 1391{
1279 return loop_count; 1392 return loop_count;
1280} 1393}
1281 1394
1395unsigned int
1396ev_loop_depth (EV_P)
1397{
1398 return loop_depth;
1399}
1400
1282void 1401void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1403{
1285 io_blocktime = interval; 1404 io_blocktime = interval;
1286} 1405}
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1409{
1291 timeout_blocktime = interval; 1410 timeout_blocktime = interval;
1292} 1411}
1293 1412
1413void
1414ev_set_userdata (EV_P_ void *data)
1415{
1416 userdata = data;
1417}
1418
1419void *
1420ev_userdata (EV_P)
1421{
1422 return userdata;
1423}
1424
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1426{
1427 invoke_cb = invoke_pending_cb;
1428}
1429
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1431{
1432 release_cb = release;
1433 acquire_cb = acquire;
1434}
1435#endif
1436
1437/* initialise a loop structure, must be zero-initialised */
1294static void noinline 1438static void noinline
1295loop_init (EV_P_ unsigned int flags) 1439loop_init (EV_P_ unsigned int flags)
1296{ 1440{
1297 if (!backend) 1441 if (!backend)
1298 { 1442 {
1443#if EV_USE_REALTIME
1444 if (!have_realtime)
1445 {
1446 struct timespec ts;
1447
1448 if (!clock_gettime (CLOCK_REALTIME, &ts))
1449 have_realtime = 1;
1450 }
1451#endif
1452
1299#if EV_USE_MONOTONIC 1453#if EV_USE_MONOTONIC
1454 if (!have_monotonic)
1300 { 1455 {
1301 struct timespec ts; 1456 struct timespec ts;
1457
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 1459 have_monotonic = 1;
1304 } 1460 }
1305#endif 1461#endif
1306 1462
1307 ev_rt_now = ev_time (); 1463 ev_rt_now = ev_time ();
1308 mn_now = get_clock (); 1464 mn_now = get_clock ();
1309 now_floor = mn_now; 1465 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now; 1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1311 1470
1312 io_blocktime = 0.; 1471 io_blocktime = 0.;
1313 timeout_blocktime = 0.; 1472 timeout_blocktime = 0.;
1314 backend = 0; 1473 backend = 0;
1315 backend_fd = -1; 1474 backend_fd = -1;
… …
1346#endif 1505#endif
1347#if EV_USE_SELECT 1506#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 1508#endif
1350 1509
1510 ev_prepare_init (&pending_w, pendingcb);
1511
1351 ev_init (&pipeev, pipecb); 1512 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 1513 ev_set_priority (&pipe_w, EV_MAXPRI);
1353 } 1514 }
1354} 1515}
1355 1516
1517/* free up a loop structure */
1356static void noinline 1518static void noinline
1357loop_destroy (EV_P) 1519loop_destroy (EV_P)
1358{ 1520{
1359 int i; 1521 int i;
1360 1522
1361 if (ev_is_active (&pipeev)) 1523 if (ev_is_active (&pipe_w))
1362 { 1524 {
1363 ev_ref (EV_A); /* signal watcher */ 1525 ev_ref (EV_A); /* signal watcher */
1364 ev_io_stop (EV_A_ &pipeev); 1526 ev_io_stop (EV_A_ &pipe_w);
1365 1527
1366#if EV_USE_EVENTFD 1528#if EV_USE_EVENTFD
1367 if (evfd >= 0) 1529 if (evfd >= 0)
1368 close (evfd); 1530 close (evfd);
1369#endif 1531#endif
… …
1408 } 1570 }
1409 1571
1410 ev_free (anfds); anfdmax = 0; 1572 ev_free (anfds); anfdmax = 0;
1411 1573
1412 /* have to use the microsoft-never-gets-it-right macro */ 1574 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 1576 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 1577 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 1578#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 1579 array_free (periodic, EMPTY);
1417#endif 1580#endif
… …
1426 1589
1427 backend = 0; 1590 backend = 0;
1428} 1591}
1429 1592
1430#if EV_USE_INOTIFY 1593#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 1594inline_size void infy_fork (EV_P);
1432#endif 1595#endif
1433 1596
1434void inline_size 1597inline_size void
1435loop_fork (EV_P) 1598loop_fork (EV_P)
1436{ 1599{
1437#if EV_USE_PORT 1600#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1601 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 1602#endif
… …
1445#endif 1608#endif
1446#if EV_USE_INOTIFY 1609#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 1610 infy_fork (EV_A);
1448#endif 1611#endif
1449 1612
1450 if (ev_is_active (&pipeev)) 1613 if (ev_is_active (&pipe_w))
1451 { 1614 {
1452 /* this "locks" the handlers against writing to the pipe */ 1615 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */ 1616 /* while we modify the fd vars */
1454 gotsig = 1; 1617 gotsig = 1;
1455#if EV_ASYNC_ENABLE 1618#if EV_ASYNC_ENABLE
1456 gotasync = 1; 1619 gotasync = 1;
1457#endif 1620#endif
1458 1621
1459 ev_ref (EV_A); 1622 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 1623 ev_io_stop (EV_A_ &pipe_w);
1461 1624
1462#if EV_USE_EVENTFD 1625#if EV_USE_EVENTFD
1463 if (evfd >= 0) 1626 if (evfd >= 0)
1464 close (evfd); 1627 close (evfd);
1465#endif 1628#endif
… …
1470 close (evpipe [1]); 1633 close (evpipe [1]);
1471 } 1634 }
1472 1635
1473 evpipe_init (EV_A); 1636 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 1637 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 1638 pipecb (EV_A_ &pipe_w, EV_READ);
1476 } 1639 }
1477 1640
1478 postfork = 0; 1641 postfork = 0;
1479} 1642}
1480 1643
… …
1505void 1668void
1506ev_loop_fork (EV_P) 1669ev_loop_fork (EV_P)
1507{ 1670{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1671 postfork = 1; /* must be in line with ev_default_fork */
1509} 1672}
1673#endif /* multiplicity */
1510 1674
1511#if EV_VERIFY 1675#if EV_VERIFY
1512void noinline 1676static void noinline
1513verify_watcher (EV_P_ W w) 1677verify_watcher (EV_P_ W w)
1514{ 1678{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 1680
1517 if (w->pending) 1681 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 1683}
1520 1684
1521static void noinline 1685static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N) 1686verify_heap (EV_P_ ANHE *heap, int N)
1523{ 1687{
1524 int i; 1688 int i;
1525 1689
1526 for (i = HEAP0; i < N + HEAP0; ++i) 1690 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 1691 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1692 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1693 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1694 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 1695
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 1697 }
1534} 1698}
1535 1699
1536static void noinline 1700static void noinline
1537array_verify (EV_P_ W *ws, int cnt) 1701array_verify (EV_P_ W *ws, int cnt)
1538{ 1702{
1539 while (cnt--) 1703 while (cnt--)
1540 { 1704 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 1706 verify_watcher (EV_A_ ws [cnt]);
1543 } 1707 }
1544} 1708}
1545#endif 1709#endif
1546 1710
1711#if EV_MINIMAL < 2
1547void 1712void
1548ev_loop_verify (EV_P) 1713ev_loop_verify (EV_P)
1549{ 1714{
1550#if EV_VERIFY 1715#if EV_VERIFY
1551 int i; 1716 int i;
… …
1553 1718
1554 assert (activecnt >= -1); 1719 assert (activecnt >= -1);
1555 1720
1556 assert (fdchangemax >= fdchangecnt); 1721 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 1722 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 1724
1560 assert (anfdmax >= 0); 1725 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 1726 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 1727 for (w = anfds [i].head; w; w = w->next)
1563 { 1728 {
1564 verify_watcher (EV_A_ (W)w); 1729 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 1732 }
1568 1733
1569 assert (timermax >= timercnt); 1734 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 1735 verify_heap (EV_A_ timers, timercnt);
1571 1736
… …
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1606# endif 1771# endif
1607#endif 1772#endif
1608} 1773}
1609 1774#endif
1610#endif /* multiplicity */
1611 1775
1612#if EV_MULTIPLICITY 1776#if EV_MULTIPLICITY
1613struct ev_loop * 1777struct ev_loop *
1614ev_default_loop_init (unsigned int flags) 1778ev_default_loop_init (unsigned int flags)
1615#else 1779#else
… …
1648{ 1812{
1649#if EV_MULTIPLICITY 1813#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr; 1814 struct ev_loop *loop = ev_default_loop_ptr;
1651#endif 1815#endif
1652 1816
1817 ev_default_loop_ptr = 0;
1818
1653#ifndef _WIN32 1819#ifndef _WIN32
1654 ev_ref (EV_A); /* child watcher */ 1820 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev); 1821 ev_signal_stop (EV_A_ &childev);
1656#endif 1822#endif
1657 1823
… …
1663{ 1829{
1664#if EV_MULTIPLICITY 1830#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr; 1831 struct ev_loop *loop = ev_default_loop_ptr;
1666#endif 1832#endif
1667 1833
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 1834 postfork = 1; /* must be in line with ev_loop_fork */
1670} 1835}
1671 1836
1672/*****************************************************************************/ 1837/*****************************************************************************/
1673 1838
1674void 1839void
1675ev_invoke (EV_P_ void *w, int revents) 1840ev_invoke (EV_P_ void *w, int revents)
1676{ 1841{
1677 EV_CB_INVOKE ((W)w, revents); 1842 EV_CB_INVOKE ((W)w, revents);
1678} 1843}
1679 1844
1680void inline_speed 1845unsigned int
1681call_pending (EV_P) 1846ev_pending_count (EV_P)
1847{
1848 int pri;
1849 unsigned int count = 0;
1850
1851 for (pri = NUMPRI; pri--; )
1852 count += pendingcnt [pri];
1853
1854 return count;
1855}
1856
1857void noinline
1858ev_invoke_pending (EV_P)
1682{ 1859{
1683 int pri; 1860 int pri;
1684 1861
1685 for (pri = NUMPRI; pri--; ) 1862 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 1863 while (pendingcnt [pri])
1687 { 1864 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 1866
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1693 1869
1694 p->w->pending = 0; 1870 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 1871 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 1872 EV_FREQUENT_CHECK;
1697 }
1698 } 1873 }
1699} 1874}
1700 1875
1701#if EV_IDLE_ENABLE 1876#if EV_IDLE_ENABLE
1702void inline_size 1877/* make idle watchers pending. this handles the "call-idle */
1878/* only when higher priorities are idle" logic */
1879inline_size void
1703idle_reify (EV_P) 1880idle_reify (EV_P)
1704{ 1881{
1705 if (expect_false (idleall)) 1882 if (expect_false (idleall))
1706 { 1883 {
1707 int pri; 1884 int pri;
… …
1719 } 1896 }
1720 } 1897 }
1721} 1898}
1722#endif 1899#endif
1723 1900
1724void inline_size 1901/* make timers pending */
1902inline_size void
1725timers_reify (EV_P) 1903timers_reify (EV_P)
1726{ 1904{
1727 EV_FREQUENT_CHECK; 1905 EV_FREQUENT_CHECK;
1728 1906
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1907 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 1908 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1909 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 1910 {
1911 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1912
1913 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1914
1915 /* first reschedule or stop timer */
1916 if (w->repeat)
1917 {
1738 ev_at (w) += w->repeat; 1918 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 1919 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 1920 ev_at (w) = mn_now;
1741 1921
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1922 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 1923
1744 ANHE_at_cache (timers [HEAP0]); 1924 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 1925 downheap (timers, timercnt, HEAP0);
1926 }
1927 else
1928 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1929
1930 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w);
1746 } 1932 }
1747 else 1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 1934
1750 EV_FREQUENT_CHECK;
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1935 feed_reverse_done (EV_A_ EV_TIMEOUT);
1752 } 1936 }
1753} 1937}
1754 1938
1755#if EV_PERIODIC_ENABLE 1939#if EV_PERIODIC_ENABLE
1756void inline_size 1940/* make periodics pending */
1941inline_size void
1757periodics_reify (EV_P) 1942periodics_reify (EV_P)
1758{ 1943{
1759 EV_FREQUENT_CHECK; 1944 EV_FREQUENT_CHECK;
1760 1945
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 1947 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1948 int feed_count = 0;
1764 1949
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1950 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 1951 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953
1954 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1955
1956 /* first reschedule or stop timer */
1957 if (w->reschedule_cb)
1958 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1959 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 1960
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 1961 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 1962
1774 ANHE_at_cache (periodics [HEAP0]); 1963 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 1964 downheap (periodics, periodiccnt, HEAP0);
1965 }
1966 else if (w->interval)
1967 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0);
1984 }
1985 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1987
1988 EV_FREQUENT_CHECK;
1989 feed_reverse (EV_A_ (W)w);
1776 } 1990 }
1777 else if (w->interval) 1991 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 1992
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1993 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 1994 }
1802} 1995}
1803 1996
1997/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804static void noinline 1999static void noinline
1805periodics_reschedule (EV_P) 2000periodics_reschedule (EV_P)
1806{ 2001{
1807 int i; 2002 int i;
1808 2003
… …
1821 2016
1822 reheap (periodics, periodiccnt); 2017 reheap (periodics, periodiccnt);
1823} 2018}
1824#endif 2019#endif
1825 2020
1826void inline_speed 2021/* adjust all timers by a given offset */
2022static void noinline
2023timers_reschedule (EV_P_ ev_tstamp adjust)
2024{
2025 int i;
2026
2027 for (i = 0; i < timercnt; ++i)
2028 {
2029 ANHE *he = timers + i + HEAP0;
2030 ANHE_w (*he)->at += adjust;
2031 ANHE_at_cache (*he);
2032 }
2033}
2034
2035/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */
2037inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2038time_update (EV_P_ ev_tstamp max_block)
1828{ 2039{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2040#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2041 if (expect_true (have_monotonic))
1833 { 2042 {
2043 int i;
1834 ev_tstamp odiff = rtmn_diff; 2044 ev_tstamp odiff = rtmn_diff;
1835 2045
1836 mn_now = get_clock (); 2046 mn_now = get_clock ();
1837 2047
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2048 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 ev_rt_now = ev_time (); 2074 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2075 mn_now = get_clock ();
1866 now_floor = mn_now; 2076 now_floor = mn_now;
1867 } 2077 }
1868 2078
2079 /* no timer adjustment, as the monotonic clock doesn't jump */
2080 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2081# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2082 periodics_reschedule (EV_A);
1871# endif 2083# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2084 }
1875 else 2085 else
1876#endif 2086#endif
1877 { 2087 {
1878 ev_rt_now = ev_time (); 2088 ev_rt_now = ev_time ();
1879 2089
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2090 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2091 {
2092 /* adjust timers. this is easy, as the offset is the same for all of them */
2093 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2094#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2095 periodics_reschedule (EV_A);
1884#endif 2096#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2097 }
1893 2098
1894 mn_now = ev_rt_now; 2099 mn_now = ev_rt_now;
1895 } 2100 }
1896} 2101}
1897 2102
1898void 2103void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2104ev_loop (EV_P_ int flags)
1914{ 2105{
2106#if EV_MINIMAL < 2
2107 ++loop_depth;
2108#endif
2109
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2111
1915 loop_done = EVUNLOOP_CANCEL; 2112 loop_done = EVUNLOOP_CANCEL;
1916 2113
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2115
1919 do 2116 do
1920 { 2117 {
1921#if EV_VERIFY >= 2 2118#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2119 ev_loop_verify (EV_A);
… …
1935 /* we might have forked, so queue fork handlers */ 2132 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2133 if (expect_false (postfork))
1937 if (forkcnt) 2134 if (forkcnt)
1938 { 2135 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2137 EV_INVOKE_PENDING;
1941 } 2138 }
1942#endif 2139#endif
1943 2140
1944 /* queue prepare watchers (and execute them) */ 2141 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2142 if (expect_false (preparecnt))
1946 { 2143 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2145 EV_INVOKE_PENDING;
1949 } 2146 }
1950 2147
1951 if (expect_false (!activecnt)) 2148 if (expect_false (loop_done))
1952 break; 2149 break;
1953 2150
1954 /* we might have forked, so reify kernel state if necessary */ 2151 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2152 if (expect_false (postfork))
1956 loop_fork (EV_A); 2153 loop_fork (EV_A);
… …
1963 ev_tstamp waittime = 0.; 2160 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2161 ev_tstamp sleeptime = 0.;
1965 2162
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967 { 2164 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
1968 /* update time to cancel out callback processing overhead */ 2168 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100); 2169 time_update (EV_A_ 1e100);
1970 2170
1971 waittime = MAX_BLOCKTIME; 2171 waittime = MAX_BLOCKTIME;
1972 2172
… …
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983 if (waittime > to) waittime = to; 2183 if (waittime > to) waittime = to;
1984 } 2184 }
1985#endif 2185#endif
1986 2186
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 2188 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 2189 waittime = timeout_blocktime;
1989 2190
1990 sleeptime = waittime - backend_fudge; 2191 /* extra check because io_blocktime is commonly 0 */
1991
1992 if (expect_true (sleeptime > io_blocktime)) 2192 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 2193 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195
2196 if (sleeptime > waittime - backend_fudge)
2197 sleeptime = waittime - backend_fudge;
2198
2199 if (expect_true (sleeptime > 0.))
2200 {
1997 ev_sleep (sleeptime); 2201 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 2202 waittime -= sleeptime;
2203 }
1999 } 2204 }
2000 } 2205 }
2001 2206
2207#if EV_MINIMAL < 2
2002 ++loop_count; 2208 ++loop_count;
2209#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 2211 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2004 2213
2005 /* update ev_rt_now, do magic */ 2214 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 2215 time_update (EV_A_ waittime + sleeptime);
2007 } 2216 }
2008 2217
… …
2019 2228
2020 /* queue check watchers, to be executed first */ 2229 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 2230 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2023 2232
2024 call_pending (EV_A); 2233 EV_INVOKE_PENDING;
2025 } 2234 }
2026 while (expect_true ( 2235 while (expect_true (
2027 activecnt 2236 activecnt
2028 && !loop_done 2237 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 )); 2239 ));
2031 2240
2032 if (loop_done == EVUNLOOP_ONE) 2241 if (loop_done == EVUNLOOP_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 2242 loop_done = EVUNLOOP_CANCEL;
2243
2244#if EV_MINIMAL < 2
2245 --loop_depth;
2246#endif
2034} 2247}
2035 2248
2036void 2249void
2037ev_unloop (EV_P_ int how) 2250ev_unloop (EV_P_ int how)
2038{ 2251{
2039 loop_done = how; 2252 loop_done = how;
2040} 2253}
2041 2254
2255void
2256ev_ref (EV_P)
2257{
2258 ++activecnt;
2259}
2260
2261void
2262ev_unref (EV_P)
2263{
2264 --activecnt;
2265}
2266
2267void
2268ev_now_update (EV_P)
2269{
2270 time_update (EV_A_ 1e100);
2271}
2272
2273void
2274ev_suspend (EV_P)
2275{
2276 ev_now_update (EV_A);
2277}
2278
2279void
2280ev_resume (EV_P)
2281{
2282 ev_tstamp mn_prev = mn_now;
2283
2284 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev);
2286#if EV_PERIODIC_ENABLE
2287 /* TODO: really do this? */
2288 periodics_reschedule (EV_A);
2289#endif
2290}
2291
2042/*****************************************************************************/ 2292/*****************************************************************************/
2293/* singly-linked list management, used when the expected list length is short */
2043 2294
2044void inline_size 2295inline_size void
2045wlist_add (WL *head, WL elem) 2296wlist_add (WL *head, WL elem)
2046{ 2297{
2047 elem->next = *head; 2298 elem->next = *head;
2048 *head = elem; 2299 *head = elem;
2049} 2300}
2050 2301
2051void inline_size 2302inline_size void
2052wlist_del (WL *head, WL elem) 2303wlist_del (WL *head, WL elem)
2053{ 2304{
2054 while (*head) 2305 while (*head)
2055 { 2306 {
2056 if (*head == elem) 2307 if (*head == elem)
… …
2061 2312
2062 head = &(*head)->next; 2313 head = &(*head)->next;
2063 } 2314 }
2064} 2315}
2065 2316
2066void inline_speed 2317/* internal, faster, version of ev_clear_pending */
2318inline_speed void
2067clear_pending (EV_P_ W w) 2319clear_pending (EV_P_ W w)
2068{ 2320{
2069 if (w->pending) 2321 if (w->pending)
2070 { 2322 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2323 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 2324 w->pending = 0;
2073 } 2325 }
2074} 2326}
2075 2327
2076int 2328int
… …
2080 int pending = w_->pending; 2332 int pending = w_->pending;
2081 2333
2082 if (expect_true (pending)) 2334 if (expect_true (pending))
2083 { 2335 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2336 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2337 p->w = (W)&pending_w;
2085 w_->pending = 0; 2338 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 2339 return p->events;
2088 } 2340 }
2089 else 2341 else
2090 return 0; 2342 return 0;
2091} 2343}
2092 2344
2093void inline_size 2345inline_size void
2094pri_adjust (EV_P_ W w) 2346pri_adjust (EV_P_ W w)
2095{ 2347{
2096 int pri = w->priority; 2348 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2349 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2350 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 2351 ev_set_priority (w, pri);
2100} 2352}
2101 2353
2102void inline_speed 2354inline_speed void
2103ev_start (EV_P_ W w, int active) 2355ev_start (EV_P_ W w, int active)
2104{ 2356{
2105 pri_adjust (EV_A_ w); 2357 pri_adjust (EV_A_ w);
2106 w->active = active; 2358 w->active = active;
2107 ev_ref (EV_A); 2359 ev_ref (EV_A);
2108} 2360}
2109 2361
2110void inline_size 2362inline_size void
2111ev_stop (EV_P_ W w) 2363ev_stop (EV_P_ W w)
2112{ 2364{
2113 ev_unref (EV_A); 2365 ev_unref (EV_A);
2114 w->active = 0; 2366 w->active = 0;
2115} 2367}
… …
2122 int fd = w->fd; 2374 int fd = w->fd;
2123 2375
2124 if (expect_false (ev_is_active (w))) 2376 if (expect_false (ev_is_active (w)))
2125 return; 2377 return;
2126 2378
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 2379 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 2381
2129 EV_FREQUENT_CHECK; 2382 EV_FREQUENT_CHECK;
2130 2383
2131 ev_start (EV_A_ (W)w, 1); 2384 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 2386 wlist_add (&anfds[fd].head, (WL)w);
2134 2387
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 2389 w->events &= ~EV__IOFDSET;
2137 2390
2138 EV_FREQUENT_CHECK; 2391 EV_FREQUENT_CHECK;
2139} 2392}
2140 2393
2141void noinline 2394void noinline
… …
2143{ 2396{
2144 clear_pending (EV_A_ (W)w); 2397 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2398 if (expect_false (!ev_is_active (w)))
2146 return; 2399 return;
2147 2400
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2401 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 2402
2150 EV_FREQUENT_CHECK; 2403 EV_FREQUENT_CHECK;
2151 2404
2152 wlist_del (&anfds[w->fd].head, (WL)w); 2405 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 2406 ev_stop (EV_A_ (W)w);
… …
2163 if (expect_false (ev_is_active (w))) 2416 if (expect_false (ev_is_active (w)))
2164 return; 2417 return;
2165 2418
2166 ev_at (w) += mn_now; 2419 ev_at (w) += mn_now;
2167 2420
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2421 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 2422
2170 EV_FREQUENT_CHECK; 2423 EV_FREQUENT_CHECK;
2171 2424
2172 ++timercnt; 2425 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2426 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 2429 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 2430 upheap (timers, ev_active (w));
2178 2431
2179 EV_FREQUENT_CHECK; 2432 EV_FREQUENT_CHECK;
2180 2433
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2434 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 2435}
2183 2436
2184void noinline 2437void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 2438ev_timer_stop (EV_P_ ev_timer *w)
2186{ 2439{
… …
2191 EV_FREQUENT_CHECK; 2444 EV_FREQUENT_CHECK;
2192 2445
2193 { 2446 {
2194 int active = ev_active (w); 2447 int active = ev_active (w);
2195 2448
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2449 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 2450
2198 --timercnt; 2451 --timercnt;
2199 2452
2200 if (expect_true (active < timercnt + HEAP0)) 2453 if (expect_true (active < timercnt + HEAP0))
2201 { 2454 {
… …
2234 } 2487 }
2235 2488
2236 EV_FREQUENT_CHECK; 2489 EV_FREQUENT_CHECK;
2237} 2490}
2238 2491
2492ev_tstamp
2493ev_timer_remaining (EV_P_ ev_timer *w)
2494{
2495 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2496}
2497
2239#if EV_PERIODIC_ENABLE 2498#if EV_PERIODIC_ENABLE
2240void noinline 2499void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 2500ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 2501{
2243 if (expect_false (ev_is_active (w))) 2502 if (expect_false (ev_is_active (w)))
… …
2245 2504
2246 if (w->reschedule_cb) 2505 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 2507 else if (w->interval)
2249 { 2508 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 2510 /* this formula differs from the one in periodic_reify because we do not always round up */
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 2512 }
2254 else 2513 else
2255 ev_at (w) = w->offset; 2514 ev_at (w) = w->offset;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 2522 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 2523 upheap (periodics, ev_active (w));
2265 2524
2266 EV_FREQUENT_CHECK; 2525 EV_FREQUENT_CHECK;
2267 2526
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2527 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 2528}
2270 2529
2271void noinline 2530void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 2531ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 2532{
… …
2278 EV_FREQUENT_CHECK; 2537 EV_FREQUENT_CHECK;
2279 2538
2280 { 2539 {
2281 int active = ev_active (w); 2540 int active = ev_active (w);
2282 2541
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2542 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 2543
2285 --periodiccnt; 2544 --periodiccnt;
2286 2545
2287 if (expect_true (active < periodiccnt + HEAP0)) 2546 if (expect_true (active < periodiccnt + HEAP0))
2288 { 2547 {
… …
2311 2570
2312void noinline 2571void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 2572ev_signal_start (EV_P_ ev_signal *w)
2314{ 2573{
2315#if EV_MULTIPLICITY 2574#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif 2576#endif
2318 if (expect_false (ev_is_active (w))) 2577 if (expect_false (ev_is_active (w)))
2319 return; 2578 return;
2320 2579
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322 2581
2323 evpipe_init (EV_A); 2582 evpipe_init (EV_A);
2324 2583
2325 EV_FREQUENT_CHECK; 2584 EV_FREQUENT_CHECK;
2326 2585
… …
2329 sigset_t full, prev; 2588 sigset_t full, prev;
2330 sigfillset (&full); 2589 sigfillset (&full);
2331 sigprocmask (SIG_SETMASK, &full, &prev); 2590 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif 2591#endif
2333 2592
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335 2594
2336#ifndef _WIN32 2595#ifndef _WIN32
2337 sigprocmask (SIG_SETMASK, &prev, 0); 2596 sigprocmask (SIG_SETMASK, &prev, 0);
2338#endif 2597#endif
2339 } 2598 }
… …
2344 if (!((WL)w)->next) 2603 if (!((WL)w)->next)
2345 { 2604 {
2346#if _WIN32 2605#if _WIN32
2347 signal (w->signum, ev_sighandler); 2606 signal (w->signum, ev_sighandler);
2348#else 2607#else
2349 struct sigaction sa; 2608 struct sigaction sa = { };
2350 sa.sa_handler = ev_sighandler; 2609 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 2610 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 2612 sigaction (w->signum, &sa, 0);
2354#endif 2613#endif
… …
2377 2636
2378void 2637void
2379ev_child_start (EV_P_ ev_child *w) 2638ev_child_start (EV_P_ ev_child *w)
2380{ 2639{
2381#if EV_MULTIPLICITY 2640#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 2642#endif
2384 if (expect_false (ev_is_active (w))) 2643 if (expect_false (ev_is_active (w)))
2385 return; 2644 return;
2386 2645
2387 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
… …
2412# ifdef _WIN32 2671# ifdef _WIN32
2413# undef lstat 2672# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 2673# define lstat(a,b) _stati64 (a,b)
2415# endif 2674# endif
2416 2675
2417#define DEF_STAT_INTERVAL 5.0074891 2676#define DEF_STAT_INTERVAL 5.0074891
2677#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 2678#define MIN_STAT_INTERVAL 0.1074891
2419 2679
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 2681
2422#if EV_USE_INOTIFY 2682#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 2683# define EV_INOTIFY_BUFSIZE 8192
… …
2427{ 2687{
2428 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); 2688 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);
2429 2689
2430 if (w->wd < 0) 2690 if (w->wd < 0)
2431 { 2691 {
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433 2694
2434 /* monitor some parent directory for speedup hints */ 2695 /* monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 2697 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 2699 {
2439 char path [4096]; 2700 char path [4096];
2440 strcpy (path, w->path); 2701 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2705 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2706 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 2707
2447 char *pend = strrchr (path, '/'); 2708 char *pend = strrchr (path, '/');
2448 2709
2449 if (!pend) 2710 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 2711 break;
2451 2712
2452 *pend = 0; 2713 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 2714 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 2715 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 2717 }
2457 } 2718 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 2719
2461 if (w->wd >= 0) 2720 if (w->wd >= 0)
2721 {
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2723
2724 /* now local changes will be tracked by inotify, but remote changes won't */
2725 /* unless the filesystem it known to be local, we therefore still poll */
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer);
2740 }
2463} 2741}
2464 2742
2465static void noinline 2743static void noinline
2466infy_del (EV_P_ ev_stat *w) 2744infy_del (EV_P_ ev_stat *w)
2467{ 2745{
… …
2481 2759
2482static void noinline 2760static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 2762{
2485 if (slot < 0) 2763 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 2764 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 2766 infy_wd (EV_A_ slot, wd, ev);
2489 else 2767 else
2490 { 2768 {
2491 WL w_; 2769 WL w_;
… …
2497 2775
2498 if (w->wd == wd || wd == -1) 2776 if (w->wd == wd || wd == -1)
2499 { 2777 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 2779 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502 w->wd = -1; 2781 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 2782 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 2783 }
2505 2784
2506 stat_timer_cb (EV_A_ &w->timer, 0); 2785 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2519 2798
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2800 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522} 2801}
2523 2802
2524void inline_size 2803inline_size void
2804check_2625 (EV_P)
2805{
2806 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */
2809 struct utsname buf;
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return;
2814
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1;
2824}
2825
2826inline_size void
2525infy_init (EV_P) 2827infy_init (EV_P)
2526{ 2828{
2527 if (fs_fd != -2) 2829 if (fs_fd != -2)
2528 return; 2830 return;
2831
2832 fs_fd = -1;
2833
2834 check_2625 (EV_A);
2529 2835
2530 fs_fd = inotify_init (); 2836 fs_fd = inotify_init ();
2531 2837
2532 if (fs_fd >= 0) 2838 if (fs_fd >= 0)
2533 { 2839 {
… …
2535 ev_set_priority (&fs_w, EV_MAXPRI); 2841 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 2842 ev_io_start (EV_A_ &fs_w);
2537 } 2843 }
2538} 2844}
2539 2845
2540void inline_size 2846inline_size void
2541infy_fork (EV_P) 2847infy_fork (EV_P)
2542{ 2848{
2543 int slot; 2849 int slot;
2544 2850
2545 if (fs_fd < 0) 2851 if (fs_fd < 0)
… …
2561 w->wd = -1; 2867 w->wd = -1;
2562 2868
2563 if (fs_fd >= 0) 2869 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 2870 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 2871 else
2566 ev_timer_start (EV_A_ &w->timer); 2872 ev_timer_again (EV_A_ &w->timer);
2567 } 2873 }
2568
2569 } 2874 }
2570} 2875}
2571 2876
2877#endif
2878
2879#ifdef _WIN32
2880# define EV_LSTAT(p,b) _stati64 (p, b)
2881#else
2882# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 2883#endif
2573 2884
2574void 2885void
2575ev_stat_stat (EV_P_ ev_stat *w) 2886ev_stat_stat (EV_P_ ev_stat *w)
2576{ 2887{
… …
2603 || w->prev.st_atime != w->attr.st_atime 2914 || w->prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 2915 || w->prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 2916 || w->prev.st_ctime != w->attr.st_ctime
2606 ) { 2917 ) {
2607 #if EV_USE_INOTIFY 2918 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0)
2920 {
2608 infy_del (EV_A_ w); 2921 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 2922 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 2923 ev_stat_stat (EV_A_ w); /* avoid race... */
2924 }
2611 #endif 2925 #endif
2612 2926
2613 ev_feed_event (EV_A_ w, EV_STAT); 2927 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 2928 }
2615} 2929}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 2932ev_stat_start (EV_P_ ev_stat *w)
2619{ 2933{
2620 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
2621 return; 2935 return;
2622 2936
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 2937 ev_stat_stat (EV_A_ w);
2628 2938
2939 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 2940 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 2941
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2942 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 2943 ev_set_priority (&w->timer, ev_priority (w));
2634 2944
2635#if EV_USE_INOTIFY 2945#if EV_USE_INOTIFY
2636 infy_init (EV_A); 2946 infy_init (EV_A);
2637 2947
2638 if (fs_fd >= 0) 2948 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 2949 infy_add (EV_A_ w);
2640 else 2950 else
2641#endif 2951#endif
2642 ev_timer_start (EV_A_ &w->timer); 2952 ev_timer_again (EV_A_ &w->timer);
2643 2953
2644 ev_start (EV_A_ (W)w, 1); 2954 ev_start (EV_A_ (W)w, 1);
2645 2955
2646 EV_FREQUENT_CHECK; 2956 EV_FREQUENT_CHECK;
2647} 2957}
… …
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3127 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 } 3128 }
2819 } 3129 }
2820} 3130}
2821 3131
3132static void
3133embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3134{
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136
3137 ev_embed_stop (EV_A_ w);
3138
3139 {
3140 struct ev_loop *loop = w->other;
3141
3142 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3144 }
3145
3146 ev_embed_start (EV_A_ w);
3147}
3148
2822#if 0 3149#if 0
2823static void 3150static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3151embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{ 3152{
2826 ev_idle_stop (EV_A_ idle); 3153 ev_idle_stop (EV_A_ idle);
… …
2833 if (expect_false (ev_is_active (w))) 3160 if (expect_false (ev_is_active (w)))
2834 return; 3161 return;
2835 3162
2836 { 3163 {
2837 struct ev_loop *loop = w->other; 3164 struct ev_loop *loop = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 3167 }
2841 3168
2842 EV_FREQUENT_CHECK; 3169 EV_FREQUENT_CHECK;
2843 3170
… …
2846 3173
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 3174 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 3175 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 3176 ev_prepare_start (EV_A_ &w->prepare);
2850 3177
3178 ev_fork_init (&w->fork, embed_fork_cb);
3179 ev_fork_start (EV_A_ &w->fork);
3180
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3181 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 3182
2853 ev_start (EV_A_ (W)w, 1); 3183 ev_start (EV_A_ (W)w, 1);
2854 3184
2855 EV_FREQUENT_CHECK; 3185 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 3192 if (expect_false (!ev_is_active (w)))
2863 return; 3193 return;
2864 3194
2865 EV_FREQUENT_CHECK; 3195 EV_FREQUENT_CHECK;
2866 3196
2867 ev_io_stop (EV_A_ &w->io); 3197 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 3198 ev_prepare_stop (EV_A_ &w->prepare);
2869 3199 ev_fork_stop (EV_A_ &w->fork);
2870 ev_stop (EV_A_ (W)w);
2871 3200
2872 EV_FREQUENT_CHECK; 3201 EV_FREQUENT_CHECK;
2873} 3202}
2874#endif 3203#endif
2875 3204
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 3301once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 3302{
2974 void (*cb)(int revents, void *arg) = once->cb; 3303 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 3304 void *arg = once->arg;
2976 3305
2977 ev_io_stop (EV_A_ &once->io); 3306 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 3307 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 3308 ev_free (once);
2980 3309
2981 cb (revents, arg); 3310 cb (revents, arg);
2982} 3311}
2983 3312
2984static void 3313static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 3314once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 3315{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3316 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3317
3318 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 3319}
2989 3320
2990static void 3321static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 3322once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 3323{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3324 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3325
3326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 3327}
2995 3328
2996void 3329void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 3331{
… …
3020 ev_timer_set (&once->to, timeout, 0.); 3353 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 3354 ev_timer_start (EV_A_ &once->to);
3022 } 3355 }
3023} 3356}
3024 3357
3358/*****************************************************************************/
3359
3360#if EV_WALK_ENABLE
3361void
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3363{
3364 int i, j;
3365 ev_watcher_list *wl, *wn;
3366
3367 if (types & (EV_IO | EV_EMBED))
3368 for (i = 0; i < anfdmax; ++i)
3369 for (wl = anfds [i].head; wl; )
3370 {
3371 wn = wl->next;
3372
3373#if EV_EMBED_ENABLE
3374 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3375 {
3376 if (types & EV_EMBED)
3377 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3378 }
3379 else
3380#endif
3381#if EV_USE_INOTIFY
3382 if (ev_cb ((ev_io *)wl) == infy_cb)
3383 ;
3384 else
3385#endif
3386 if ((ev_io *)wl != &pipe_w)
3387 if (types & EV_IO)
3388 cb (EV_A_ EV_IO, wl);
3389
3390 wl = wn;
3391 }
3392
3393 if (types & (EV_TIMER | EV_STAT))
3394 for (i = timercnt + HEAP0; i-- > HEAP0; )
3395#if EV_STAT_ENABLE
3396 /*TODO: timer is not always active*/
3397 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3398 {
3399 if (types & EV_STAT)
3400 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3401 }
3402 else
3403#endif
3404 if (types & EV_TIMER)
3405 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3406
3407#if EV_PERIODIC_ENABLE
3408 if (types & EV_PERIODIC)
3409 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif
3412
3413#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; )
3416 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif
3419
3420#if EV_FORK_ENABLE
3421 if (types & EV_FORK)
3422 for (i = forkcnt; i--; )
3423 if (ev_cb (forks [i]) != embed_fork_cb)
3424 cb (EV_A_ EV_FORK, forks [i]);
3425#endif
3426
3427#if EV_ASYNC_ENABLE
3428 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif
3432
3433 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]);
3439
3440 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]);
3443
3444 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i)
3446 for (wl = signals [i].head; wl; )
3447 {
3448 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn;
3451 }
3452
3453 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; )
3455 for (wl = childs [i]; wl; )
3456 {
3457 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn;
3460 }
3461/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463}
3464#endif
3465
3025#if EV_MULTIPLICITY 3466#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 3467 #include "ev_wrap.h"
3027#endif 3468#endif
3028 3469
3029#ifdef __cplusplus 3470#ifdef __cplusplus

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