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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 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
… …
287} 349}
288# endif 350# endif
289#endif 351#endif
290 352
291/**/ 353/**/
354
355#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
357#else
358# define EV_FREQUENT_CHECK do { } while (0)
359#endif
292 360
293/* 361/*
294 * This is used to avoid floating point rounding problems. 362 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 363 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 364 * to ensure progress, time-wise, even when rounding
… …
336typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
337 405
338#define ev_active(w) ((W)(w))->active 406#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 407#define ev_at(w) ((WT)(w))->at
340 408
341#if EV_USE_MONOTONIC 409#if EV_USE_REALTIME
342/* 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 */
343/* 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
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
345#endif 417#endif
346 418
347#ifdef _WIN32 419#ifdef _WIN32
348# include "ev_win32.c" 420# include "ev_win32.c"
… …
357{ 429{
358 syserr_cb = cb; 430 syserr_cb = cb;
359} 431}
360 432
361static void noinline 433static void noinline
362syserr (const char *msg) 434ev_syserr (const char *msg)
363{ 435{
364 if (!msg) 436 if (!msg)
365 msg = "(libev) system error"; 437 msg = "(libev) system error";
366 438
367 if (syserr_cb) 439 if (syserr_cb)
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
415 487
416/*****************************************************************************/ 488/*****************************************************************************/
417 489
490/* file descriptor info structure */
418typedef struct 491typedef struct
419{ 492{
420 WL head; 493 WL head;
421 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 */
422 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
423#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 502 SOCKET handle;
425#endif 503#endif
426} ANFD; 504} ANFD;
427 505
506/* stores the pending event set for a given watcher */
428typedef struct 507typedef struct
429{ 508{
430 W w; 509 W w;
431 int events; 510 int events; /* the pending event set for the given watcher */
432} ANPENDING; 511} ANPENDING;
433 512
434#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 514/* hash table entry per inotify-id */
436typedef struct 515typedef struct
… …
439} ANFS; 518} ANFS;
440#endif 519#endif
441 520
442/* Heap Entry */ 521/* Heap Entry */
443#if EV_HEAP_CACHE_AT 522#if EV_HEAP_CACHE_AT
523 /* a heap element */
444 typedef struct { 524 typedef struct {
445 ev_tstamp at; 525 ev_tstamp at;
446 WT w; 526 WT w;
447 } ANHE; 527 } ANHE;
448 528
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 529 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 530 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 532#else
533 /* a heap element */
453 typedef WT ANHE; 534 typedef WT ANHE;
454 535
455 #define ANHE_w(he) (he) 536 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 537 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 538 #define ANHE_at_cache(he)
458#endif 539#endif
459 540
460#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
461 542
462 struct ev_loop 543 struct ev_loop
… …
487 568
488ev_tstamp 569ev_tstamp
489ev_time (void) 570ev_time (void)
490{ 571{
491#if EV_USE_REALTIME 572#if EV_USE_REALTIME
573 if (expect_true (have_realtime))
574 {
492 struct timespec ts; 575 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 576 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 577 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 578 }
579#endif
580
496 struct timeval tv; 581 struct timeval tv;
497 gettimeofday (&tv, 0); 582 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 583 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 584}
501 585
502ev_tstamp inline_size 586inline_size ev_tstamp
503get_clock (void) 587get_clock (void)
504{ 588{
505#if EV_USE_MONOTONIC 589#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 590 if (expect_true (have_monotonic))
507 { 591 {
… …
540 struct timeval tv; 624 struct timeval tv;
541 625
542 tv.tv_sec = (time_t)delay; 626 tv.tv_sec = (time_t)delay;
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544 628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */
545 select (0, 0, 0, 0, &tv); 632 select (0, 0, 0, 0, &tv);
546#endif 633#endif
547 } 634 }
548} 635}
549 636
550/*****************************************************************************/ 637/*****************************************************************************/
551 638
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 640
554int inline_size 641/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */
643inline_size int
555array_nextsize (int elem, int cur, int cnt) 644array_nextsize (int elem, int cur, int cnt)
556{ 645{
557 int ncur = cur + 1; 646 int ncur = cur + 1;
558 647
559 do 648 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 665array_realloc (int elem, void *base, int *cur, int cnt)
577{ 666{
578 *cur = array_nextsize (elem, *cur, cnt); 667 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 668 return ev_realloc (base, elem * *cur);
580} 669}
670
671#define array_init_zero(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 673
582#define array_needsize(type,base,cur,cnt,init) \ 674#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 675 if (expect_false ((cnt) > (cur))) \
584 { \ 676 { \
585 int ocur_ = (cur); \ 677 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 689 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 690 }
599#endif 691#endif
600 692
601#define array_free(stem, idx) \ 693#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 695
604/*****************************************************************************/ 696/*****************************************************************************/
697
698/* dummy callback for pending events */
699static void noinline
700pendingcb (EV_P_ ev_prepare *w, int revents)
701{
702}
605 703
606void noinline 704void noinline
607ev_feed_event (EV_P_ void *w, int revents) 705ev_feed_event (EV_P_ void *w, int revents)
608{ 706{
609 W w_ = (W)w; 707 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 716 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 717 pendings [pri][w_->pending - 1].events = revents;
620 } 718 }
621} 719}
622 720
623void inline_speed 721inline_speed void
722feed_reverse (EV_P_ W w)
723{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
725 rfeeds [rfeedcnt++] = w;
726}
727
728inline_size void
729feed_reverse_done (EV_P_ int revents)
730{
731 do
732 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
733 while (rfeedcnt);
734}
735
736inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 737queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 738{
626 int i; 739 int i;
627 740
628 for (i = 0; i < eventcnt; ++i) 741 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 742 ev_feed_event (EV_A_ events [i], type);
630} 743}
631 744
632/*****************************************************************************/ 745/*****************************************************************************/
633 746
634void inline_size 747inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 748fd_event (EV_P_ int fd, int revents)
649{ 749{
650 ANFD *anfd = anfds + fd; 750 ANFD *anfd = anfds + fd;
651 ev_io *w; 751 ev_io *w;
652 752
… …
664{ 764{
665 if (fd >= 0 && fd < anfdmax) 765 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 766 fd_event (EV_A_ fd, revents);
667} 767}
668 768
669void inline_size 769/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */
771inline_size void
670fd_reify (EV_P) 772fd_reify (EV_P)
671{ 773{
672 int i; 774 int i;
673 775
674 for (i = 0; i < fdchangecnt; ++i) 776 for (i = 0; i < fdchangecnt; ++i)
… …
683 events |= (unsigned char)w->events; 785 events |= (unsigned char)w->events;
684 786
685#if EV_SELECT_IS_WINSOCKET 787#if EV_SELECT_IS_WINSOCKET
686 if (events) 788 if (events)
687 { 789 {
688 unsigned long argp; 790 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE 791 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else 793 #else
692 anfd->handle = _get_osfhandle (fd); 794 anfd->handle = _get_osfhandle (fd);
693 #endif 795 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695 } 797 }
696#endif 798#endif
697 799
698 { 800 {
699 unsigned char o_events = anfd->events; 801 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify; 802 unsigned char o_reify = anfd->reify;
701 803
702 anfd->reify = 0; 804 anfd->reify = 0;
703 anfd->events = events; 805 anfd->events = events;
704 806
705 if (o_events != events || o_reify & EV_IOFDSET) 807 if (o_events != events || o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 808 backend_modify (EV_A_ fd, o_events, events);
707 } 809 }
708 } 810 }
709 811
710 fdchangecnt = 0; 812 fdchangecnt = 0;
711} 813}
712 814
713void inline_size 815/* something about the given fd changed */
816inline_size void
714fd_change (EV_P_ int fd, int flags) 817fd_change (EV_P_ int fd, int flags)
715{ 818{
716 unsigned char reify = anfds [fd].reify; 819 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 820 anfds [fd].reify |= flags;
718 821
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 826 fdchanges [fdchangecnt - 1] = fd;
724 } 827 }
725} 828}
726 829
727void inline_speed 830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void
728fd_kill (EV_P_ int fd) 832fd_kill (EV_P_ int fd)
729{ 833{
730 ev_io *w; 834 ev_io *w;
731 835
732 while ((w = (ev_io *)anfds [fd].head)) 836 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 838 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 840 }
737} 841}
738 842
739int inline_size 843/* check whether the given fd is atcually valid, for error recovery */
844inline_size int
740fd_valid (int fd) 845fd_valid (int fd)
741{ 846{
742#ifdef _WIN32 847#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 848 return _get_osfhandle (fd) != -1;
744#else 849#else
… …
752{ 857{
753 int fd; 858 int fd;
754 859
755 for (fd = 0; fd < anfdmax; ++fd) 860 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 861 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 862 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 863 fd_kill (EV_A_ fd);
759} 864}
760 865
761/* called on ENOMEM in select/poll to kill some fds and retry */ 866/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 867static void noinline
… …
780 885
781 for (fd = 0; fd < anfdmax; ++fd) 886 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 887 if (anfds [fd].events)
783 { 888 {
784 anfds [fd].events = 0; 889 anfds [fd].events = 0;
890 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 891 fd_change (EV_A_ fd, EV__IOFDSET | 1);
786 } 892 }
787} 893}
788 894
789/*****************************************************************************/ 895/*****************************************************************************/
790 896
… …
803#if EV_USE_4HEAP 909#if EV_USE_4HEAP
804 910
805#define DHEAP 4 911#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 912#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 913#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 914#define UPHEAP_DONE(p,k) ((p) == (k))
809/* towards the root */
810void inline_speed
811upheap (ANHE *heap, int k)
812{
813 ANHE he = heap [k];
814
815 for (;;)
816 {
817 int p = HPARENT (k);
818
819 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820 break;
821
822 heap [k] = heap [p];
823 ev_active (ANHE_w (heap [k])) = k;
824 k = p;
825 }
826
827 heap [k] = he;
828 ev_active (ANHE_w (he)) = k;
829}
830 915
831/* away from the root */ 916/* away from the root */
832void inline_speed 917inline_speed void
833downheap (ANHE *heap, int N, int k) 918downheap (ANHE *heap, int N, int k)
834{ 919{
835 ANHE he = heap [k]; 920 ANHE he = heap [k];
836 ANHE *E = heap + N + HEAP0; 921 ANHE *E = heap + N + HEAP0;
837 922
838 for (;;) 923 for (;;)
839 { 924 {
840 ev_tstamp minat; 925 ev_tstamp minat;
841 ANHE *minpos; 926 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 928
844 // find minimum child 929 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 930 if (expect_true (pos + DHEAP - 1 < E))
846 { 931 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 933 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
849 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 934 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
… …
870 955
871 heap [k] = he; 956 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 957 ev_active (ANHE_w (he)) = k;
873} 958}
874 959
875#else // 4HEAP 960#else /* 4HEAP */
876 961
877#define HEAP0 1 962#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 963#define HPARENT(k) ((k) >> 1)
964#define UPHEAP_DONE(p,k) (!(p))
879 965
880/* towards the root */ 966/* away from the root */
881void inline_speed 967inline_speed void
882upheap (ANHE *heap, int k) 968downheap (ANHE *heap, int N, int k)
883{ 969{
884 ANHE he = heap [k]; 970 ANHE he = heap [k];
885 971
886 for (;;) 972 for (;;)
887 { 973 {
888 int p = HPARENT (k); 974 int c = k << 1;
889 975
890 /* maybe we could use a dummy element at heap [0]? */ 976 if (c > N + HEAP0 - 1)
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break; 977 break;
893 978
894 heap [k] = heap [p];
895 ev_active (ANHE_w (heap [k])) = k;
896 k = p;
897 }
898
899 heap [k] = he;
900 ev_active (ANHE_w (heap [k])) = k;
901}
902
903/* away from the root */
904void inline_speed
905downheap (ANHE *heap, int N, int k)
906{
907 ANHE he = heap [k];
908
909 for (;;)
910 {
911 int c = k << 1;
912
913 if (c > N)
914 break;
915
916 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917 ? 1 : 0; 980 ? 1 : 0;
918 981
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 982 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 983 break;
921 984
… …
928 heap [k] = he; 991 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 992 ev_active (ANHE_w (he)) = k;
930} 993}
931#endif 994#endif
932 995
933void inline_size 996/* towards the root */
997inline_speed void
998upheap (ANHE *heap, int k)
999{
1000 ANHE he = heap [k];
1001
1002 for (;;)
1003 {
1004 int p = HPARENT (k);
1005
1006 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1007 break;
1008
1009 heap [k] = heap [p];
1010 ev_active (ANHE_w (heap [k])) = k;
1011 k = p;
1012 }
1013
1014 heap [k] = he;
1015 ev_active (ANHE_w (he)) = k;
1016}
1017
1018/* move an element suitably so it is in a correct place */
1019inline_size void
934adjustheap (ANHE *heap, int N, int k) 1020adjustheap (ANHE *heap, int N, int k)
935{ 1021{
936 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
937 upheap (heap, k); 1023 upheap (heap, k);
938 else 1024 else
939 downheap (heap, N, k); 1025 downheap (heap, N, k);
940} 1026}
941 1027
1028/* rebuild the heap: this function is used only once and executed rarely */
1029inline_size void
1030reheap (ANHE *heap, int N)
1031{
1032 int i;
1033
1034 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1035 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1036 for (i = 0; i < N; ++i)
1037 upheap (heap, i + HEAP0);
1038}
1039
942/*****************************************************************************/ 1040/*****************************************************************************/
943 1041
1042/* associate signal watchers to a signal signal */
944typedef struct 1043typedef struct
945{ 1044{
946 WL head; 1045 WL head;
947 EV_ATOMIC_T gotsig; 1046 EV_ATOMIC_T gotsig;
948} ANSIG; 1047} ANSIG;
… …
950static ANSIG *signals; 1049static ANSIG *signals;
951static int signalmax; 1050static int signalmax;
952 1051
953static EV_ATOMIC_T gotsig; 1052static EV_ATOMIC_T gotsig;
954 1053
955void inline_size
956signals_init (ANSIG *base, int count)
957{
958 while (count--)
959 {
960 base->head = 0;
961 base->gotsig = 0;
962
963 ++base;
964 }
965}
966
967/*****************************************************************************/ 1054/*****************************************************************************/
968 1055
969void inline_speed 1056/* used to prepare libev internal fd's */
1057/* this is not fork-safe */
1058inline_speed void
970fd_intern (int fd) 1059fd_intern (int fd)
971{ 1060{
972#ifdef _WIN32 1061#ifdef _WIN32
973 int arg = 1; 1062 unsigned long arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else 1064#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC); 1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK); 1066 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif 1067#endif
979} 1068}
980 1069
981static void noinline 1070static void noinline
982evpipe_init (EV_P) 1071evpipe_init (EV_P)
983{ 1072{
984 if (!ev_is_active (&pipeev)) 1073 if (!ev_is_active (&pipe_w))
985 { 1074 {
986#if EV_USE_EVENTFD 1075#if EV_USE_EVENTFD
987 if ((evfd = eventfd (0, 0)) >= 0) 1076 if ((evfd = eventfd (0, 0)) >= 0)
988 { 1077 {
989 evpipe [0] = -1; 1078 evpipe [0] = -1;
990 fd_intern (evfd); 1079 fd_intern (evfd);
991 ev_io_set (&pipeev, evfd, EV_READ); 1080 ev_io_set (&pipe_w, evfd, EV_READ);
992 } 1081 }
993 else 1082 else
994#endif 1083#endif
995 { 1084 {
996 while (pipe (evpipe)) 1085 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1086 ev_syserr ("(libev) error creating signal/async pipe");
998 1087
999 fd_intern (evpipe [0]); 1088 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1089 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1090 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002 } 1091 }
1003 1092
1004 ev_io_start (EV_A_ &pipeev); 1093 ev_io_start (EV_A_ &pipe_w);
1005 ev_unref (EV_A); /* watcher should not keep loop alive */ 1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 } 1095 }
1007} 1096}
1008 1097
1009void inline_size 1098inline_size void
1010evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011{ 1100{
1012 if (!*flag) 1101 if (!*flag)
1013 { 1102 {
1014 int old_errno = errno; /* save errno because write might clobber it */ 1103 int old_errno = errno; /* save errno because write might clobber it */
… …
1027 1116
1028 errno = old_errno; 1117 errno = old_errno;
1029 } 1118 }
1030} 1119}
1031 1120
1121/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */
1032static void 1123static void
1033pipecb (EV_P_ ev_io *iow, int revents) 1124pipecb (EV_P_ ev_io *iow, int revents)
1034{ 1125{
1035#if EV_USE_EVENTFD 1126#if EV_USE_EVENTFD
1036 if (evfd >= 0) 1127 if (evfd >= 0)
… …
1092ev_feed_signal_event (EV_P_ int signum) 1183ev_feed_signal_event (EV_P_ int signum)
1093{ 1184{
1094 WL w; 1185 WL w;
1095 1186
1096#if EV_MULTIPLICITY 1187#if EV_MULTIPLICITY
1097 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1098#endif 1189#endif
1099 1190
1100 --signum; 1191 --signum;
1101 1192
1102 if (signum < 0 || signum >= signalmax) 1193 if (signum < 0 || signum >= signalmax)
… …
1118 1209
1119#ifndef WIFCONTINUED 1210#ifndef WIFCONTINUED
1120# define WIFCONTINUED(status) 0 1211# define WIFCONTINUED(status) 0
1121#endif 1212#endif
1122 1213
1123void inline_speed 1214/* handle a single child status event */
1215inline_speed void
1124child_reap (EV_P_ int chain, int pid, int status) 1216child_reap (EV_P_ int chain, int pid, int status)
1125{ 1217{
1126 ev_child *w; 1218 ev_child *w;
1127 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128 1220
… …
1141 1233
1142#ifndef WCONTINUED 1234#ifndef WCONTINUED
1143# define WCONTINUED 0 1235# define WCONTINUED 0
1144#endif 1236#endif
1145 1237
1238/* called on sigchld etc., calls waitpid */
1146static void 1239static void
1147childcb (EV_P_ ev_signal *sw, int revents) 1240childcb (EV_P_ ev_signal *sw, int revents)
1148{ 1241{
1149 int pid, status; 1242 int pid, status;
1150 1243
… …
1231 /* kqueue is borked on everything but netbsd apparently */ 1324 /* kqueue is borked on everything but netbsd apparently */
1232 /* it usually doesn't work correctly on anything but sockets and pipes */ 1325 /* it usually doesn't work correctly on anything but sockets and pipes */
1233 flags &= ~EVBACKEND_KQUEUE; 1326 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1327#endif
1235#ifdef __APPLE__ 1328#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1329 /* only select works correctly on that "unix-certified" platform */
1237 flags &= ~EVBACKEND_POLL; 1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1238#endif 1332#endif
1239 1333
1240 return flags; 1334 return flags;
1241} 1335}
1242 1336
… …
1274ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275{ 1369{
1276 timeout_blocktime = interval; 1370 timeout_blocktime = interval;
1277} 1371}
1278 1372
1373/* initialise a loop structure, must be zero-initialised */
1279static void noinline 1374static void noinline
1280loop_init (EV_P_ unsigned int flags) 1375loop_init (EV_P_ unsigned int flags)
1281{ 1376{
1282 if (!backend) 1377 if (!backend)
1283 { 1378 {
1379#if EV_USE_REALTIME
1380 if (!have_realtime)
1381 {
1382 struct timespec ts;
1383
1384 if (!clock_gettime (CLOCK_REALTIME, &ts))
1385 have_realtime = 1;
1386 }
1387#endif
1388
1284#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
1390 if (!have_monotonic)
1285 { 1391 {
1286 struct timespec ts; 1392 struct timespec ts;
1393
1287 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288 have_monotonic = 1; 1395 have_monotonic = 1;
1289 } 1396 }
1290#endif 1397#endif
1291 1398
1292 ev_rt_now = ev_time (); 1399 ev_rt_now = ev_time ();
1293 mn_now = get_clock (); 1400 mn_now = get_clock ();
1294 now_floor = mn_now; 1401 now_floor = mn_now;
… …
1331#endif 1438#endif
1332#if EV_USE_SELECT 1439#if EV_USE_SELECT
1333 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334#endif 1441#endif
1335 1442
1443 ev_prepare_init (&pending_w, pendingcb);
1444
1336 ev_init (&pipeev, pipecb); 1445 ev_init (&pipe_w, pipecb);
1337 ev_set_priority (&pipeev, EV_MAXPRI); 1446 ev_set_priority (&pipe_w, EV_MAXPRI);
1338 } 1447 }
1339} 1448}
1340 1449
1450/* free up a loop structure */
1341static void noinline 1451static void noinline
1342loop_destroy (EV_P) 1452loop_destroy (EV_P)
1343{ 1453{
1344 int i; 1454 int i;
1345 1455
1346 if (ev_is_active (&pipeev)) 1456 if (ev_is_active (&pipe_w))
1347 { 1457 {
1348 ev_ref (EV_A); /* signal watcher */ 1458 ev_ref (EV_A); /* signal watcher */
1349 ev_io_stop (EV_A_ &pipeev); 1459 ev_io_stop (EV_A_ &pipe_w);
1350 1460
1351#if EV_USE_EVENTFD 1461#if EV_USE_EVENTFD
1352 if (evfd >= 0) 1462 if (evfd >= 0)
1353 close (evfd); 1463 close (evfd);
1354#endif 1464#endif
… …
1393 } 1503 }
1394 1504
1395 ev_free (anfds); anfdmax = 0; 1505 ev_free (anfds); anfdmax = 0;
1396 1506
1397 /* have to use the microsoft-never-gets-it-right macro */ 1507 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY);
1398 array_free (fdchange, EMPTY); 1509 array_free (fdchange, EMPTY);
1399 array_free (timer, EMPTY); 1510 array_free (timer, EMPTY);
1400#if EV_PERIODIC_ENABLE 1511#if EV_PERIODIC_ENABLE
1401 array_free (periodic, EMPTY); 1512 array_free (periodic, EMPTY);
1402#endif 1513#endif
… …
1411 1522
1412 backend = 0; 1523 backend = 0;
1413} 1524}
1414 1525
1415#if EV_USE_INOTIFY 1526#if EV_USE_INOTIFY
1416void inline_size infy_fork (EV_P); 1527inline_size void infy_fork (EV_P);
1417#endif 1528#endif
1418 1529
1419void inline_size 1530inline_size void
1420loop_fork (EV_P) 1531loop_fork (EV_P)
1421{ 1532{
1422#if EV_USE_PORT 1533#if EV_USE_PORT
1423 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424#endif 1535#endif
… …
1430#endif 1541#endif
1431#if EV_USE_INOTIFY 1542#if EV_USE_INOTIFY
1432 infy_fork (EV_A); 1543 infy_fork (EV_A);
1433#endif 1544#endif
1434 1545
1435 if (ev_is_active (&pipeev)) 1546 if (ev_is_active (&pipe_w))
1436 { 1547 {
1437 /* this "locks" the handlers against writing to the pipe */ 1548 /* this "locks" the handlers against writing to the pipe */
1438 /* while we modify the fd vars */ 1549 /* while we modify the fd vars */
1439 gotsig = 1; 1550 gotsig = 1;
1440#if EV_ASYNC_ENABLE 1551#if EV_ASYNC_ENABLE
1441 gotasync = 1; 1552 gotasync = 1;
1442#endif 1553#endif
1443 1554
1444 ev_ref (EV_A); 1555 ev_ref (EV_A);
1445 ev_io_stop (EV_A_ &pipeev); 1556 ev_io_stop (EV_A_ &pipe_w);
1446 1557
1447#if EV_USE_EVENTFD 1558#if EV_USE_EVENTFD
1448 if (evfd >= 0) 1559 if (evfd >= 0)
1449 close (evfd); 1560 close (evfd);
1450#endif 1561#endif
… …
1455 close (evpipe [1]); 1566 close (evpipe [1]);
1456 } 1567 }
1457 1568
1458 evpipe_init (EV_A); 1569 evpipe_init (EV_A);
1459 /* now iterate over everything, in case we missed something */ 1570 /* now iterate over everything, in case we missed something */
1460 pipecb (EV_A_ &pipeev, EV_READ); 1571 pipecb (EV_A_ &pipe_w, EV_READ);
1461 } 1572 }
1462 1573
1463 postfork = 0; 1574 postfork = 0;
1464} 1575}
1465 1576
1466#if EV_MULTIPLICITY 1577#if EV_MULTIPLICITY
1578
1467struct ev_loop * 1579struct ev_loop *
1468ev_loop_new (unsigned int flags) 1580ev_loop_new (unsigned int flags)
1469{ 1581{
1470 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1471 1583
… …
1489void 1601void
1490ev_loop_fork (EV_P) 1602ev_loop_fork (EV_P)
1491{ 1603{
1492 postfork = 1; /* must be in line with ev_default_fork */ 1604 postfork = 1; /* must be in line with ev_default_fork */
1493} 1605}
1606
1607#if EV_VERIFY
1608static void noinline
1609verify_watcher (EV_P_ W w)
1610{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612
1613 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615}
1616
1617static void noinline
1618verify_heap (EV_P_ ANHE *heap, int N)
1619{
1620 int i;
1621
1622 for (i = HEAP0; i < N + HEAP0; ++i)
1623 {
1624 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1625 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1626 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1627
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 }
1630}
1631
1632static void noinline
1633array_verify (EV_P_ W *ws, int cnt)
1634{
1635 while (cnt--)
1636 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]);
1639 }
1640}
1641#endif
1642
1643void
1644ev_loop_verify (EV_P)
1645{
1646#if EV_VERIFY
1647 int i;
1648 WL w;
1649
1650 assert (activecnt >= -1);
1651
1652 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655
1656 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i)
1658 for (w = anfds [i].head; w; w = w->next)
1659 {
1660 verify_watcher (EV_A_ (W)w);
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 }
1664
1665 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt);
1667
1668#if EV_PERIODIC_ENABLE
1669 assert (periodicmax >= periodiccnt);
1670 verify_heap (EV_A_ periodics, periodiccnt);
1671#endif
1672
1673 for (i = NUMPRI; i--; )
1674 {
1675 assert (pendingmax [i] >= pendingcnt [i]);
1676#if EV_IDLE_ENABLE
1677 assert (idleall >= 0);
1678 assert (idlemax [i] >= idlecnt [i]);
1679 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1680#endif
1681 }
1682
1683#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif
1687
1688#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif
1692
1693 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt);
1695
1696 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt);
1698
1699# if 0
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1494#endif 1702# endif
1703#endif
1704}
1705
1706#endif /* multiplicity */
1495 1707
1496#if EV_MULTIPLICITY 1708#if EV_MULTIPLICITY
1497struct ev_loop * 1709struct ev_loop *
1498ev_default_loop_init (unsigned int flags) 1710ev_default_loop_init (unsigned int flags)
1499#else 1711#else
… …
1532{ 1744{
1533#if EV_MULTIPLICITY 1745#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr; 1746 struct ev_loop *loop = ev_default_loop_ptr;
1535#endif 1747#endif
1536 1748
1749 ev_default_loop_ptr = 0;
1750
1537#ifndef _WIN32 1751#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */ 1752 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev); 1753 ev_signal_stop (EV_A_ &childev);
1540#endif 1754#endif
1541 1755
… …
1547{ 1761{
1548#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr; 1763 struct ev_loop *loop = ev_default_loop_ptr;
1550#endif 1764#endif
1551 1765
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 1766 postfork = 1; /* must be in line with ev_loop_fork */
1554} 1767}
1555 1768
1556/*****************************************************************************/ 1769/*****************************************************************************/
1557 1770
1558void 1771void
1559ev_invoke (EV_P_ void *w, int revents) 1772ev_invoke (EV_P_ void *w, int revents)
1560{ 1773{
1561 EV_CB_INVOKE ((W)w, revents); 1774 EV_CB_INVOKE ((W)w, revents);
1562} 1775}
1563 1776
1564void inline_speed 1777inline_speed void
1565call_pending (EV_P) 1778call_pending (EV_P)
1566{ 1779{
1567 int pri; 1780 int pri;
1568 1781
1569 for (pri = NUMPRI; pri--; ) 1782 for (pri = NUMPRI; pri--; )
1570 while (pendingcnt [pri]) 1783 while (pendingcnt [pri])
1571 { 1784 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 1786
1574 if (expect_true (p->w))
1575 {
1576 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1577 1789
1578 p->w->pending = 0; 1790 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 1791 EV_CB_INVOKE (p->w, p->events);
1580 } 1792 EV_FREQUENT_CHECK;
1581 } 1793 }
1582} 1794}
1583 1795
1584#if EV_IDLE_ENABLE 1796#if EV_IDLE_ENABLE
1585void inline_size 1797/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */
1799inline_size void
1586idle_reify (EV_P) 1800idle_reify (EV_P)
1587{ 1801{
1588 if (expect_false (idleall)) 1802 if (expect_false (idleall))
1589 { 1803 {
1590 int pri; 1804 int pri;
… …
1602 } 1816 }
1603 } 1817 }
1604} 1818}
1605#endif 1819#endif
1606 1820
1607void inline_size 1821/* make timers pending */
1822inline_size void
1608timers_reify (EV_P) 1823timers_reify (EV_P)
1609{ 1824{
1825 EV_FREQUENT_CHECK;
1826
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1827 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 1828 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1829 do
1613
1614 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616 /* first reschedule or stop timer */
1617 if (w->repeat)
1618 { 1830 {
1831 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1832
1833 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1834
1835 /* first reschedule or stop timer */
1836 if (w->repeat)
1837 {
1619 ev_at (w) += w->repeat; 1838 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 1839 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 1840 ev_at (w) = mn_now;
1622 1841
1623 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1842 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624 1843
1625 ANHE_at_set (timers [HEAP0]); 1844 ANHE_at_cache (timers [HEAP0]);
1626 downheap (timers, timercnt, HEAP0); 1845 downheap (timers, timercnt, HEAP0);
1846 }
1847 else
1848 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1849
1850 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w);
1627 } 1852 }
1628 else 1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 1854
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1855 feed_reverse_done (EV_A_ EV_TIMEOUT);
1632 } 1856 }
1633} 1857}
1634 1858
1635#if EV_PERIODIC_ENABLE 1859#if EV_PERIODIC_ENABLE
1636void inline_size 1860/* make periodics pending */
1861inline_size void
1637periodics_reify (EV_P) 1862periodics_reify (EV_P)
1638{ 1863{
1864 EV_FREQUENT_CHECK;
1865
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 1867 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1868 int feed_count = 0;
1642 1869
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1870 do
1644
1645 /* first reschedule or stop timer */
1646 if (w->reschedule_cb)
1647 { 1871 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1875
1876 /* first reschedule or stop timer */
1877 if (w->reschedule_cb)
1878 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1879 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 1880
1650 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 1881 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651 1882
1652 ANHE_at_set (periodics [HEAP0]); 1883 ANHE_at_cache (periodics [HEAP0]);
1653 downheap (periodics, periodiccnt, HEAP0); 1884 downheap (periodics, periodiccnt, HEAP0);
1885 }
1886 else if (w->interval)
1887 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0);
1904 }
1905 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1907
1908 EV_FREQUENT_CHECK;
1909 feed_reverse (EV_A_ (W)w);
1654 } 1910 }
1655 else if (w->interval) 1911 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656 {
1657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658 /* if next trigger time is not sufficiently in the future, put it there */
1659 /* this might happen because of floating point inexactness */
1660 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661 {
1662 ev_at (w) += w->interval;
1663 1912
1664 /* if interval is unreasonably low we might still have a time in the past */
1665 /* so correct this. this will make the periodic very inexact, but the user */
1666 /* has effectively asked to get triggered more often than possible */
1667 if (ev_at (w) < ev_rt_now)
1668 ev_at (w) = ev_rt_now;
1669 }
1670
1671 ANHE_at_set (periodics [HEAP0]);
1672 downheap (periodics, periodiccnt, HEAP0);
1673 }
1674 else
1675 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1913 feed_reverse_done (EV_A_ EV_PERIODIC);
1678 } 1914 }
1679} 1915}
1680 1916
1917/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1681static void noinline 1919static void noinline
1682periodics_reschedule (EV_P) 1920periodics_reschedule (EV_P)
1683{ 1921{
1684 int i; 1922 int i;
1685 1923
… …
1691 if (w->reschedule_cb) 1929 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 1931 else if (w->interval)
1694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695 1933
1696 ANHE_at_set (periodics [i]); 1934 ANHE_at_cache (periodics [i]);
1697 } 1935 }
1698 1936
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 1937 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 1938}
1939#endif
1940
1941/* adjust all timers by a given offset */
1942static void noinline
1943timers_reschedule (EV_P_ ev_tstamp adjust)
1944{
1945 int i;
1946
1701 for (i = 0; i < periodiccnt; ++i) 1947 for (i = 0; i < timercnt; ++i)
1702 upheap (periodics, i + HEAP0); 1948 {
1949 ANHE *he = timers + i + HEAP0;
1950 ANHE_w (*he)->at += adjust;
1951 ANHE_at_cache (*he);
1952 }
1703} 1953}
1704#endif
1705 1954
1706void inline_speed 1955/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */
1957inline_speed void
1707time_update (EV_P_ ev_tstamp max_block) 1958time_update (EV_P_ ev_tstamp max_block)
1708{ 1959{
1709 int i;
1710
1711#if EV_USE_MONOTONIC 1960#if EV_USE_MONOTONIC
1712 if (expect_true (have_monotonic)) 1961 if (expect_true (have_monotonic))
1713 { 1962 {
1963 int i;
1714 ev_tstamp odiff = rtmn_diff; 1964 ev_tstamp odiff = rtmn_diff;
1715 1965
1716 mn_now = get_clock (); 1966 mn_now = get_clock ();
1717 1967
1718 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1744 ev_rt_now = ev_time (); 1994 ev_rt_now = ev_time ();
1745 mn_now = get_clock (); 1995 mn_now = get_clock ();
1746 now_floor = mn_now; 1996 now_floor = mn_now;
1747 } 1997 }
1748 1998
1999 /* no timer adjustment, as the monotonic clock doesn't jump */
2000 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749# if EV_PERIODIC_ENABLE 2001# if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2002 periodics_reschedule (EV_A);
1751# endif 2003# endif
1752 /* no timer adjustment, as the monotonic clock doesn't jump */
1753 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754 } 2004 }
1755 else 2005 else
1756#endif 2006#endif
1757 { 2007 {
1758 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1759 2009
1760 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2010 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1761 { 2011 {
2012 /* adjust timers. this is easy, as the offset is the same for all of them */
2013 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1762#if EV_PERIODIC_ENABLE 2014#if EV_PERIODIC_ENABLE
1763 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1764#endif 2016#endif
1765 /* adjust timers. this is easy, as the offset is the same for all of them */
1766 for (i = 0; i < timercnt; ++i)
1767 {
1768 ANHE *he = timers + i + HEAP0;
1769 ANHE_w (*he)->at += ev_rt_now - mn_now;
1770 ANHE_at_set (*he);
1771 }
1772 } 2017 }
1773 2018
1774 mn_now = ev_rt_now; 2019 mn_now = ev_rt_now;
1775 } 2020 }
1776} 2021}
1777 2022
1778void
1779ev_ref (EV_P)
1780{
1781 ++activecnt;
1782}
1783
1784void
1785ev_unref (EV_P)
1786{
1787 --activecnt;
1788}
1789
1790static int loop_done; 2023static int loop_done;
1791 2024
1792void 2025void
1793ev_loop (EV_P_ int flags) 2026ev_loop (EV_P_ int flags)
1794{ 2027{
… …
1796 2029
1797 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1798 2031
1799 do 2032 do
1800 { 2033 {
2034#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A);
2036#endif
2037
1801#ifndef _WIN32 2038#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 2039 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 2040 if (expect_false (getpid () != curpid))
1804 { 2041 {
1805 curpid = getpid (); 2042 curpid = getpid ();
… …
1822 { 2059 {
1823 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824 call_pending (EV_A); 2061 call_pending (EV_A);
1825 } 2062 }
1826 2063
1827 if (expect_false (!activecnt))
1828 break;
1829
1830 /* we might have forked, so reify kernel state if necessary */ 2064 /* we might have forked, so reify kernel state if necessary */
1831 if (expect_false (postfork)) 2065 if (expect_false (postfork))
1832 loop_fork (EV_A); 2066 loop_fork (EV_A);
1833 2067
1834 /* update fd-related kernel structures */ 2068 /* update fd-related kernel structures */
… …
1913ev_unloop (EV_P_ int how) 2147ev_unloop (EV_P_ int how)
1914{ 2148{
1915 loop_done = how; 2149 loop_done = how;
1916} 2150}
1917 2151
2152void
2153ev_ref (EV_P)
2154{
2155 ++activecnt;
2156}
2157
2158void
2159ev_unref (EV_P)
2160{
2161 --activecnt;
2162}
2163
2164void
2165ev_now_update (EV_P)
2166{
2167 time_update (EV_A_ 1e100);
2168}
2169
2170void
2171ev_suspend (EV_P)
2172{
2173 ev_now_update (EV_A);
2174}
2175
2176void
2177ev_resume (EV_P)
2178{
2179 ev_tstamp mn_prev = mn_now;
2180
2181 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev);
2183#if EV_PERIODIC_ENABLE
2184 /* TODO: really do this? */
2185 periodics_reschedule (EV_A);
2186#endif
2187}
2188
1918/*****************************************************************************/ 2189/*****************************************************************************/
2190/* singly-linked list management, used when the expected list length is short */
1919 2191
1920void inline_size 2192inline_size void
1921wlist_add (WL *head, WL elem) 2193wlist_add (WL *head, WL elem)
1922{ 2194{
1923 elem->next = *head; 2195 elem->next = *head;
1924 *head = elem; 2196 *head = elem;
1925} 2197}
1926 2198
1927void inline_size 2199inline_size void
1928wlist_del (WL *head, WL elem) 2200wlist_del (WL *head, WL elem)
1929{ 2201{
1930 while (*head) 2202 while (*head)
1931 { 2203 {
1932 if (*head == elem) 2204 if (*head == elem)
… …
1937 2209
1938 head = &(*head)->next; 2210 head = &(*head)->next;
1939 } 2211 }
1940} 2212}
1941 2213
1942void inline_speed 2214/* internal, faster, version of ev_clear_pending */
2215inline_speed void
1943clear_pending (EV_P_ W w) 2216clear_pending (EV_P_ W w)
1944{ 2217{
1945 if (w->pending) 2218 if (w->pending)
1946 { 2219 {
1947 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2220 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948 w->pending = 0; 2221 w->pending = 0;
1949 } 2222 }
1950} 2223}
1951 2224
1952int 2225int
… …
1956 int pending = w_->pending; 2229 int pending = w_->pending;
1957 2230
1958 if (expect_true (pending)) 2231 if (expect_true (pending))
1959 { 2232 {
1960 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2233 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2234 p->w = (W)&pending_w;
1961 w_->pending = 0; 2235 w_->pending = 0;
1962 p->w = 0;
1963 return p->events; 2236 return p->events;
1964 } 2237 }
1965 else 2238 else
1966 return 0; 2239 return 0;
1967} 2240}
1968 2241
1969void inline_size 2242inline_size void
1970pri_adjust (EV_P_ W w) 2243pri_adjust (EV_P_ W w)
1971{ 2244{
1972 int pri = w->priority; 2245 int pri = w->priority;
1973 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975 w->priority = pri; 2248 w->priority = pri;
1976} 2249}
1977 2250
1978void inline_speed 2251inline_speed void
1979ev_start (EV_P_ W w, int active) 2252ev_start (EV_P_ W w, int active)
1980{ 2253{
1981 pri_adjust (EV_A_ w); 2254 pri_adjust (EV_A_ w);
1982 w->active = active; 2255 w->active = active;
1983 ev_ref (EV_A); 2256 ev_ref (EV_A);
1984} 2257}
1985 2258
1986void inline_size 2259inline_size void
1987ev_stop (EV_P_ W w) 2260ev_stop (EV_P_ W w)
1988{ 2261{
1989 ev_unref (EV_A); 2262 ev_unref (EV_A);
1990 w->active = 0; 2263 w->active = 0;
1991} 2264}
… …
1998 int fd = w->fd; 2271 int fd = w->fd;
1999 2272
2000 if (expect_false (ev_is_active (w))) 2273 if (expect_false (ev_is_active (w)))
2001 return; 2274 return;
2002 2275
2003 assert (("ev_io_start called with negative fd", fd >= 0)); 2276 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278
2279 EV_FREQUENT_CHECK;
2004 2280
2005 ev_start (EV_A_ (W)w, 1); 2281 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2283 wlist_add (&anfds[fd].head, (WL)w);
2008 2284
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2010 w->events &= ~EV_IOFDSET; 2286 w->events &= ~EV__IOFDSET;
2287
2288 EV_FREQUENT_CHECK;
2011} 2289}
2012 2290
2013void noinline 2291void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2292ev_io_stop (EV_P_ ev_io *w)
2015{ 2293{
2016 clear_pending (EV_A_ (W)w); 2294 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2295 if (expect_false (!ev_is_active (w)))
2018 return; 2296 return;
2019 2297
2020 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2298 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2299
2300 EV_FREQUENT_CHECK;
2021 2301
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2302 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2303 ev_stop (EV_A_ (W)w);
2024 2304
2025 fd_change (EV_A_ w->fd, 1); 2305 fd_change (EV_A_ w->fd, 1);
2306
2307 EV_FREQUENT_CHECK;
2026} 2308}
2027 2309
2028void noinline 2310void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2311ev_timer_start (EV_P_ ev_timer *w)
2030{ 2312{
2031 if (expect_false (ev_is_active (w))) 2313 if (expect_false (ev_is_active (w)))
2032 return; 2314 return;
2033 2315
2034 ev_at (w) += mn_now; 2316 ev_at (w) += mn_now;
2035 2317
2036 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2318 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037 2319
2320 EV_FREQUENT_CHECK;
2321
2322 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2325 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2326 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2327 upheap (timers, ev_active (w));
2043 2328
2329 EV_FREQUENT_CHECK;
2330
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2332}
2046 2333
2047void noinline 2334void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2335ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2336{
2050 clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
2052 return; 2339 return;
2053 2340
2341 EV_FREQUENT_CHECK;
2342
2054 { 2343 {
2055 int active = ev_active (w); 2344 int active = ev_active (w);
2056 2345
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2347
2348 --timercnt;
2349
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2350 if (expect_true (active < timercnt + HEAP0))
2060 { 2351 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2352 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2353 adjustheap (timers, timercnt, active);
2063 } 2354 }
2064
2065 --timercnt;
2066 } 2355 }
2356
2357 EV_FREQUENT_CHECK;
2067 2358
2068 ev_at (w) -= mn_now; 2359 ev_at (w) -= mn_now;
2069 2360
2070 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
2071} 2362}
2072 2363
2073void noinline 2364void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2365ev_timer_again (EV_P_ ev_timer *w)
2075{ 2366{
2367 EV_FREQUENT_CHECK;
2368
2076 if (ev_is_active (w)) 2369 if (ev_is_active (w))
2077 { 2370 {
2078 if (w->repeat) 2371 if (w->repeat)
2079 { 2372 {
2080 ev_at (w) = mn_now + w->repeat; 2373 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2374 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2375 adjustheap (timers, timercnt, ev_active (w));
2083 } 2376 }
2084 else 2377 else
2085 ev_timer_stop (EV_A_ w); 2378 ev_timer_stop (EV_A_ w);
2086 } 2379 }
2087 else if (w->repeat) 2380 else if (w->repeat)
2088 { 2381 {
2089 ev_at (w) = w->repeat; 2382 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2383 ev_timer_start (EV_A_ w);
2091 } 2384 }
2385
2386 EV_FREQUENT_CHECK;
2092} 2387}
2093 2388
2094#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
2095void noinline 2390void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2391ev_periodic_start (EV_P_ ev_periodic *w)
… …
2100 2395
2101 if (w->reschedule_cb) 2396 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2398 else if (w->interval)
2104 { 2399 {
2105 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2106 /* this formula differs from the one in periodic_reify because we do not always round up */ 2401 /* this formula differs from the one in periodic_reify because we do not always round up */
2107 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108 } 2403 }
2109 else 2404 else
2110 ev_at (w) = w->offset; 2405 ev_at (w) = w->offset;
2111 2406
2407 EV_FREQUENT_CHECK;
2408
2409 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2412 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2413 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2414 upheap (periodics, ev_active (w));
2117 2415
2416 EV_FREQUENT_CHECK;
2417
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2419}
2120 2420
2121void noinline 2421void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2422ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2423{
2124 clear_pending (EV_A_ (W)w); 2424 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2425 if (expect_false (!ev_is_active (w)))
2126 return; 2426 return;
2127 2427
2428 EV_FREQUENT_CHECK;
2429
2128 { 2430 {
2129 int active = ev_active (w); 2431 int active = ev_active (w);
2130 2432
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2434
2435 --periodiccnt;
2436
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2437 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2438 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2439 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2440 adjustheap (periodics, periodiccnt, active);
2137 } 2441 }
2138
2139 --periodiccnt;
2140 } 2442 }
2443
2444 EV_FREQUENT_CHECK;
2141 2445
2142 ev_stop (EV_A_ (W)w); 2446 ev_stop (EV_A_ (W)w);
2143} 2447}
2144 2448
2145void noinline 2449void noinline
… …
2157 2461
2158void noinline 2462void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2463ev_signal_start (EV_P_ ev_signal *w)
2160{ 2464{
2161#if EV_MULTIPLICITY 2465#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif 2467#endif
2164 if (expect_false (ev_is_active (w))) 2468 if (expect_false (ev_is_active (w)))
2165 return; 2469 return;
2166 2470
2167 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2168 2472
2169 evpipe_init (EV_A); 2473 evpipe_init (EV_A);
2474
2475 EV_FREQUENT_CHECK;
2170 2476
2171 { 2477 {
2172#ifndef _WIN32 2478#ifndef _WIN32
2173 sigset_t full, prev; 2479 sigset_t full, prev;
2174 sigfillset (&full); 2480 sigfillset (&full);
2175 sigprocmask (SIG_SETMASK, &full, &prev); 2481 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif 2482#endif
2177 2483
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179 2485
2180#ifndef _WIN32 2486#ifndef _WIN32
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2487 sigprocmask (SIG_SETMASK, &prev, 0);
2182#endif 2488#endif
2183 } 2489 }
… …
2195 sigfillset (&sa.sa_mask); 2501 sigfillset (&sa.sa_mask);
2196 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197 sigaction (w->signum, &sa, 0); 2503 sigaction (w->signum, &sa, 0);
2198#endif 2504#endif
2199 } 2505 }
2506
2507 EV_FREQUENT_CHECK;
2200} 2508}
2201 2509
2202void noinline 2510void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2511ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2512{
2205 clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
2207 return; 2515 return;
2208 2516
2517 EV_FREQUENT_CHECK;
2518
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
2211 2521
2212 if (!signals [w->signum - 1].head) 2522 if (!signals [w->signum - 1].head)
2213 signal (w->signum, SIG_DFL); 2523 signal (w->signum, SIG_DFL);
2524
2525 EV_FREQUENT_CHECK;
2214} 2526}
2215 2527
2216void 2528void
2217ev_child_start (EV_P_ ev_child *w) 2529ev_child_start (EV_P_ ev_child *w)
2218{ 2530{
2219#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
2220 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221#endif 2533#endif
2222 if (expect_false (ev_is_active (w))) 2534 if (expect_false (ev_is_active (w)))
2223 return; 2535 return;
2224 2536
2537 EV_FREQUENT_CHECK;
2538
2225 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
2226 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2541
2542 EV_FREQUENT_CHECK;
2227} 2543}
2228 2544
2229void 2545void
2230ev_child_stop (EV_P_ ev_child *w) 2546ev_child_stop (EV_P_ ev_child *w)
2231{ 2547{
2232 clear_pending (EV_A_ (W)w); 2548 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 2549 if (expect_false (!ev_is_active (w)))
2234 return; 2550 return;
2235 2551
2552 EV_FREQUENT_CHECK;
2553
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
2556
2557 EV_FREQUENT_CHECK;
2238} 2558}
2239 2559
2240#if EV_STAT_ENABLE 2560#if EV_STAT_ENABLE
2241 2561
2242# ifdef _WIN32 2562# ifdef _WIN32
2243# undef lstat 2563# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 2564# define lstat(a,b) _stati64 (a,b)
2245# endif 2565# endif
2246 2566
2247#define DEF_STAT_INTERVAL 5.0074891 2567#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248#define MIN_STAT_INTERVAL 0.1074891 2569#define MIN_STAT_INTERVAL 0.1074891
2249 2570
2250static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251 2572
2252#if EV_USE_INOTIFY 2573#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 2574# define EV_INOTIFY_BUFSIZE 8192
… …
2257{ 2578{
2258 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2579 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2259 2580
2260 if (w->wd < 0) 2581 if (w->wd < 0)
2261 { 2582 {
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263 2585
2264 /* monitor some parent directory for speedup hints */ 2586 /* monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 2588 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 2590 {
2269 char path [4096]; 2591 char path [4096];
2270 strcpy (path, w->path); 2592 strcpy (path, w->path);
… …
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2596 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2597 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 2598
2277 char *pend = strrchr (path, '/'); 2599 char *pend = strrchr (path, '/');
2278 2600
2279 if (!pend) 2601 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 2602 break;
2281 2603
2282 *pend = 0; 2604 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 2605 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 2606 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 2608 }
2287 } 2609 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 2610
2291 if (w->wd >= 0) 2611 if (w->wd >= 0)
2612 {
2292 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2614
2615 /* now local changes will be tracked by inotify, but remote changes won't */
2616 /* unless the filesystem it known to be local, we therefore still poll */
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer);
2631 }
2293} 2632}
2294 2633
2295static void noinline 2634static void noinline
2296infy_del (EV_P_ ev_stat *w) 2635infy_del (EV_P_ ev_stat *w)
2297{ 2636{
… …
2311 2650
2312static void noinline 2651static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 2653{
2315 if (slot < 0) 2654 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 2655 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 2657 infy_wd (EV_A_ slot, wd, ev);
2319 else 2658 else
2320 { 2659 {
2321 WL w_; 2660 WL w_;
… …
2327 2666
2328 if (w->wd == wd || wd == -1) 2667 if (w->wd == wd || wd == -1)
2329 { 2668 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 2670 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332 w->wd = -1; 2672 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2673 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 2674 }
2335 2675
2336 stat_timer_cb (EV_A_ &w->timer, 0); 2676 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2349 2689
2350 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2691 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352} 2692}
2353 2693
2354void inline_size 2694inline_size void
2695check_2625 (EV_P)
2696{
2697 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */
2700 struct utsname buf;
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return;
2705
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1;
2715}
2716
2717inline_size void
2355infy_init (EV_P) 2718infy_init (EV_P)
2356{ 2719{
2357 if (fs_fd != -2) 2720 if (fs_fd != -2)
2358 return; 2721 return;
2722
2723 fs_fd = -1;
2724
2725 check_2625 (EV_A);
2359 2726
2360 fs_fd = inotify_init (); 2727 fs_fd = inotify_init ();
2361 2728
2362 if (fs_fd >= 0) 2729 if (fs_fd >= 0)
2363 { 2730 {
… …
2365 ev_set_priority (&fs_w, EV_MAXPRI); 2732 ev_set_priority (&fs_w, EV_MAXPRI);
2366 ev_io_start (EV_A_ &fs_w); 2733 ev_io_start (EV_A_ &fs_w);
2367 } 2734 }
2368} 2735}
2369 2736
2370void inline_size 2737inline_size void
2371infy_fork (EV_P) 2738infy_fork (EV_P)
2372{ 2739{
2373 int slot; 2740 int slot;
2374 2741
2375 if (fs_fd < 0) 2742 if (fs_fd < 0)
… …
2391 w->wd = -1; 2758 w->wd = -1;
2392 2759
2393 if (fs_fd >= 0) 2760 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 2761 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 2762 else
2396 ev_timer_start (EV_A_ &w->timer); 2763 ev_timer_again (EV_A_ &w->timer);
2397 } 2764 }
2398
2399 } 2765 }
2400} 2766}
2401 2767
2768#endif
2769
2770#ifdef _WIN32
2771# define EV_LSTAT(p,b) _stati64 (p, b)
2772#else
2773# define EV_LSTAT(p,b) lstat (p, b)
2402#endif 2774#endif
2403 2775
2404void 2776void
2405ev_stat_stat (EV_P_ ev_stat *w) 2777ev_stat_stat (EV_P_ ev_stat *w)
2406{ 2778{
… …
2433 || w->prev.st_atime != w->attr.st_atime 2805 || w->prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 2806 || w->prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 2807 || w->prev.st_ctime != w->attr.st_ctime
2436 ) { 2808 ) {
2437 #if EV_USE_INOTIFY 2809 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0)
2811 {
2438 infy_del (EV_A_ w); 2812 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 2813 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 2814 ev_stat_stat (EV_A_ w); /* avoid race... */
2815 }
2441 #endif 2816 #endif
2442 2817
2443 ev_feed_event (EV_A_ w, EV_STAT); 2818 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 2819 }
2445} 2820}
… …
2448ev_stat_start (EV_P_ ev_stat *w) 2823ev_stat_start (EV_P_ ev_stat *w)
2449{ 2824{
2450 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
2451 return; 2826 return;
2452 2827
2453 /* since we use memcmp, we need to clear any padding data etc. */
2454 memset (&w->prev, 0, sizeof (ev_statdata));
2455 memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457 ev_stat_stat (EV_A_ w); 2828 ev_stat_stat (EV_A_ w);
2458 2829
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 2831 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 2832
2462 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2833 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2463 ev_set_priority (&w->timer, ev_priority (w)); 2834 ev_set_priority (&w->timer, ev_priority (w));
2464 2835
2465#if EV_USE_INOTIFY 2836#if EV_USE_INOTIFY
2466 infy_init (EV_A); 2837 infy_init (EV_A);
2467 2838
2468 if (fs_fd >= 0) 2839 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 2840 infy_add (EV_A_ w);
2470 else 2841 else
2471#endif 2842#endif
2472 ev_timer_start (EV_A_ &w->timer); 2843 ev_timer_again (EV_A_ &w->timer);
2473 2844
2474 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
2475} 2848}
2476 2849
2477void 2850void
2478ev_stat_stop (EV_P_ ev_stat *w) 2851ev_stat_stop (EV_P_ ev_stat *w)
2479{ 2852{
2480 clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
2482 return; 2855 return;
2483 2856
2857 EV_FREQUENT_CHECK;
2858
2484#if EV_USE_INOTIFY 2859#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 2860 infy_del (EV_A_ w);
2486#endif 2861#endif
2487 ev_timer_stop (EV_A_ &w->timer); 2862 ev_timer_stop (EV_A_ &w->timer);
2488 2863
2489 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
2865
2866 EV_FREQUENT_CHECK;
2490} 2867}
2491#endif 2868#endif
2492 2869
2493#if EV_IDLE_ENABLE 2870#if EV_IDLE_ENABLE
2494void 2871void
… …
2496{ 2873{
2497 if (expect_false (ev_is_active (w))) 2874 if (expect_false (ev_is_active (w)))
2498 return; 2875 return;
2499 2876
2500 pri_adjust (EV_A_ (W)w); 2877 pri_adjust (EV_A_ (W)w);
2878
2879 EV_FREQUENT_CHECK;
2501 2880
2502 { 2881 {
2503 int active = ++idlecnt [ABSPRI (w)]; 2882 int active = ++idlecnt [ABSPRI (w)];
2504 2883
2505 ++idleall; 2884 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 2885 ev_start (EV_A_ (W)w, active);
2507 2886
2508 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509 idles [ABSPRI (w)][active - 1] = w; 2888 idles [ABSPRI (w)][active - 1] = w;
2510 } 2889 }
2890
2891 EV_FREQUENT_CHECK;
2511} 2892}
2512 2893
2513void 2894void
2514ev_idle_stop (EV_P_ ev_idle *w) 2895ev_idle_stop (EV_P_ ev_idle *w)
2515{ 2896{
2516 clear_pending (EV_A_ (W)w); 2897 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 2898 if (expect_false (!ev_is_active (w)))
2518 return; 2899 return;
2519 2900
2901 EV_FREQUENT_CHECK;
2902
2520 { 2903 {
2521 int active = ev_active (w); 2904 int active = ev_active (w);
2522 2905
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2906 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2907 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 2908
2526 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2527 --idleall; 2910 --idleall;
2528 } 2911 }
2912
2913 EV_FREQUENT_CHECK;
2529} 2914}
2530#endif 2915#endif
2531 2916
2532void 2917void
2533ev_prepare_start (EV_P_ ev_prepare *w) 2918ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 2919{
2535 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
2536 return; 2921 return;
2922
2923 EV_FREQUENT_CHECK;
2537 2924
2538 ev_start (EV_A_ (W)w, ++preparecnt); 2925 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 2927 prepares [preparecnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2541} 2930}
2542 2931
2543void 2932void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 2933ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 2934{
2546 clear_pending (EV_A_ (W)w); 2935 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 2936 if (expect_false (!ev_is_active (w)))
2548 return; 2937 return;
2549 2938
2939 EV_FREQUENT_CHECK;
2940
2550 { 2941 {
2551 int active = ev_active (w); 2942 int active = ev_active (w);
2552 2943
2553 prepares [active - 1] = prepares [--preparecnt]; 2944 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 2945 ev_active (prepares [active - 1]) = active;
2555 } 2946 }
2556 2947
2557 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2558} 2951}
2559 2952
2560void 2953void
2561ev_check_start (EV_P_ ev_check *w) 2954ev_check_start (EV_P_ ev_check *w)
2562{ 2955{
2563 if (expect_false (ev_is_active (w))) 2956 if (expect_false (ev_is_active (w)))
2564 return; 2957 return;
2958
2959 EV_FREQUENT_CHECK;
2565 2960
2566 ev_start (EV_A_ (W)w, ++checkcnt); 2961 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 2963 checks [checkcnt - 1] = w;
2964
2965 EV_FREQUENT_CHECK;
2569} 2966}
2570 2967
2571void 2968void
2572ev_check_stop (EV_P_ ev_check *w) 2969ev_check_stop (EV_P_ ev_check *w)
2573{ 2970{
2574 clear_pending (EV_A_ (W)w); 2971 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 2972 if (expect_false (!ev_is_active (w)))
2576 return; 2973 return;
2577 2974
2975 EV_FREQUENT_CHECK;
2976
2578 { 2977 {
2579 int active = ev_active (w); 2978 int active = ev_active (w);
2580 2979
2581 checks [active - 1] = checks [--checkcnt]; 2980 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 2981 ev_active (checks [active - 1]) = active;
2583 } 2982 }
2584 2983
2585 ev_stop (EV_A_ (W)w); 2984 ev_stop (EV_A_ (W)w);
2985
2986 EV_FREQUENT_CHECK;
2586} 2987}
2587 2988
2588#if EV_EMBED_ENABLE 2989#if EV_EMBED_ENABLE
2589void noinline 2990void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 2991ev_embed_sweep (EV_P_ ev_embed *w)
… …
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3018 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618 } 3019 }
2619 } 3020 }
2620} 3021}
2621 3022
3023static void
3024embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3025{
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027
3028 ev_embed_stop (EV_A_ w);
3029
3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3035 }
3036
3037 ev_embed_start (EV_A_ w);
3038}
3039
2622#if 0 3040#if 0
2623static void 3041static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3042embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625{ 3043{
2626 ev_idle_stop (EV_A_ idle); 3044 ev_idle_stop (EV_A_ idle);
… …
2633 if (expect_false (ev_is_active (w))) 3051 if (expect_false (ev_is_active (w)))
2634 return; 3052 return;
2635 3053
2636 { 3054 {
2637 struct ev_loop *loop = w->other; 3055 struct ev_loop *loop = w->other;
2638 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2639 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640 } 3058 }
3059
3060 EV_FREQUENT_CHECK;
2641 3061
2642 ev_set_priority (&w->io, ev_priority (w)); 3062 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 3063 ev_io_start (EV_A_ &w->io);
2644 3064
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 3065 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 3066 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 3067 ev_prepare_start (EV_A_ &w->prepare);
2648 3068
3069 ev_fork_init (&w->fork, embed_fork_cb);
3070 ev_fork_start (EV_A_ &w->fork);
3071
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3072 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 3073
2651 ev_start (EV_A_ (W)w, 1); 3074 ev_start (EV_A_ (W)w, 1);
3075
3076 EV_FREQUENT_CHECK;
2652} 3077}
2653 3078
2654void 3079void
2655ev_embed_stop (EV_P_ ev_embed *w) 3080ev_embed_stop (EV_P_ ev_embed *w)
2656{ 3081{
2657 clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
2659 return; 3084 return;
2660 3085
3086 EV_FREQUENT_CHECK;
3087
2661 ev_io_stop (EV_A_ &w->io); 3088 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 3089 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork);
2663 3091
2664 ev_stop (EV_A_ (W)w); 3092 EV_FREQUENT_CHECK;
2665} 3093}
2666#endif 3094#endif
2667 3095
2668#if EV_FORK_ENABLE 3096#if EV_FORK_ENABLE
2669void 3097void
2670ev_fork_start (EV_P_ ev_fork *w) 3098ev_fork_start (EV_P_ ev_fork *w)
2671{ 3099{
2672 if (expect_false (ev_is_active (w))) 3100 if (expect_false (ev_is_active (w)))
2673 return; 3101 return;
3102
3103 EV_FREQUENT_CHECK;
2674 3104
2675 ev_start (EV_A_ (W)w, ++forkcnt); 3105 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 3107 forks [forkcnt - 1] = w;
3108
3109 EV_FREQUENT_CHECK;
2678} 3110}
2679 3111
2680void 3112void
2681ev_fork_stop (EV_P_ ev_fork *w) 3113ev_fork_stop (EV_P_ ev_fork *w)
2682{ 3114{
2683 clear_pending (EV_A_ (W)w); 3115 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3116 if (expect_false (!ev_is_active (w)))
2685 return; 3117 return;
2686 3118
3119 EV_FREQUENT_CHECK;
3120
2687 { 3121 {
2688 int active = ev_active (w); 3122 int active = ev_active (w);
2689 3123
2690 forks [active - 1] = forks [--forkcnt]; 3124 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3125 ev_active (forks [active - 1]) = active;
2692 } 3126 }
2693 3127
2694 ev_stop (EV_A_ (W)w); 3128 ev_stop (EV_A_ (W)w);
3129
3130 EV_FREQUENT_CHECK;
2695} 3131}
2696#endif 3132#endif
2697 3133
2698#if EV_ASYNC_ENABLE 3134#if EV_ASYNC_ENABLE
2699void 3135void
… …
2701{ 3137{
2702 if (expect_false (ev_is_active (w))) 3138 if (expect_false (ev_is_active (w)))
2703 return; 3139 return;
2704 3140
2705 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK;
2706 3144
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3145 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3147 asyncs [asynccnt - 1] = w;
3148
3149 EV_FREQUENT_CHECK;
2710} 3150}
2711 3151
2712void 3152void
2713ev_async_stop (EV_P_ ev_async *w) 3153ev_async_stop (EV_P_ ev_async *w)
2714{ 3154{
2715 clear_pending (EV_A_ (W)w); 3155 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3156 if (expect_false (!ev_is_active (w)))
2717 return; 3157 return;
2718 3158
3159 EV_FREQUENT_CHECK;
3160
2719 { 3161 {
2720 int active = ev_active (w); 3162 int active = ev_active (w);
2721 3163
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3164 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3165 ev_active (asyncs [active - 1]) = active;
2724 } 3166 }
2725 3167
2726 ev_stop (EV_A_ (W)w); 3168 ev_stop (EV_A_ (W)w);
3169
3170 EV_FREQUENT_CHECK;
2727} 3171}
2728 3172
2729void 3173void
2730ev_async_send (EV_P_ ev_async *w) 3174ev_async_send (EV_P_ ev_async *w)
2731{ 3175{
… …
2748once_cb (EV_P_ struct ev_once *once, int revents) 3192once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3193{
2750 void (*cb)(int revents, void *arg) = once->cb; 3194 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3195 void *arg = once->arg;
2752 3196
2753 ev_io_stop (EV_A_ &once->io); 3197 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3198 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3199 ev_free (once);
2756 3200
2757 cb (revents, arg); 3201 cb (revents, arg);
2758} 3202}
2759 3203
2760static void 3204static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3205once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3206{
2763 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3207 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3208
3209 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764} 3210}
2765 3211
2766static void 3212static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3213once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3214{
2769 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3215 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3216
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770} 3218}
2771 3219
2772void 3220void
2773ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774{ 3222{
… …
2796 ev_timer_set (&once->to, timeout, 0.); 3244 ev_timer_set (&once->to, timeout, 0.);
2797 ev_timer_start (EV_A_ &once->to); 3245 ev_timer_start (EV_A_ &once->to);
2798 } 3246 }
2799} 3247}
2800 3248
3249/*****************************************************************************/
3250
3251#if EV_WALK_ENABLE
3252void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3254{
3255 int i, j;
3256 ev_watcher_list *wl, *wn;
3257
3258 if (types & (EV_IO | EV_EMBED))
3259 for (i = 0; i < anfdmax; ++i)
3260 for (wl = anfds [i].head; wl; )
3261 {
3262 wn = wl->next;
3263
3264#if EV_EMBED_ENABLE
3265 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3266 {
3267 if (types & EV_EMBED)
3268 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3269 }
3270 else
3271#endif
3272#if EV_USE_INOTIFY
3273 if (ev_cb ((ev_io *)wl) == infy_cb)
3274 ;
3275 else
3276#endif
3277 if ((ev_io *)wl != &pipe_w)
3278 if (types & EV_IO)
3279 cb (EV_A_ EV_IO, wl);
3280
3281 wl = wn;
3282 }
3283
3284 if (types & (EV_TIMER | EV_STAT))
3285 for (i = timercnt + HEAP0; i-- > HEAP0; )
3286#if EV_STAT_ENABLE
3287 /*TODO: timer is not always active*/
3288 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3289 {
3290 if (types & EV_STAT)
3291 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3292 }
3293 else
3294#endif
3295 if (types & EV_TIMER)
3296 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3297
3298#if EV_PERIODIC_ENABLE
3299 if (types & EV_PERIODIC)
3300 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif
3303
3304#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; )
3307 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif
3310
3311#if EV_FORK_ENABLE
3312 if (types & EV_FORK)
3313 for (i = forkcnt; i--; )
3314 if (ev_cb (forks [i]) != embed_fork_cb)
3315 cb (EV_A_ EV_FORK, forks [i]);
3316#endif
3317
3318#if EV_ASYNC_ENABLE
3319 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif
3323
3324 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]);
3330
3331 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]);
3334
3335 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i)
3337 for (wl = signals [i].head; wl; )
3338 {
3339 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn;
3342 }
3343
3344 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; )
3346 for (wl = childs [i]; wl; )
3347 {
3348 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn;
3351 }
3352/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354}
3355#endif
3356
2801#if EV_MULTIPLICITY 3357#if EV_MULTIPLICITY
2802 #include "ev_wrap.h" 3358 #include "ev_wrap.h"
2803#endif 3359#endif
2804 3360
2805#ifdef __cplusplus 3361#ifdef __cplusplus

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