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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.296 by root, Thu Jul 9 09:11:20 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
… …
236# define EV_USE_EVENTFD 0 267# define EV_USE_EVENTFD 0
237# endif 268# endif
238#endif 269#endif
239 270
240#if 0 /* debugging */ 271#if 0 /* debugging */
241# define EV_VERIFY 1 272# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 273# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 274# define EV_HEAP_CACHE_AT 1
244#endif 275#endif
245 276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
246#ifndef EV_USE_4HEAP 281#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 282# define EV_USE_4HEAP !EV_MINIMAL
248#endif 283#endif
249 284
250#ifndef EV_HEAP_CACHE_AT 285#ifndef EV_HEAP_CACHE_AT
251# 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
252#endif 301#endif
253 302
254/* 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 */
255 304
256#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
… …
273# include <sys/select.h> 322# include <sys/select.h>
274# endif 323# endif
275#endif 324#endif
276 325
277#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
278# 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
279#endif 335#endif
280 336
281#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 338# include <winsock.h>
283#endif 339#endif
… …
294# endif 350# endif
295#endif 351#endif
296 352
297/**/ 353/**/
298 354
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 355#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else 357#else
307# define EV_FREQUENT_CHECK do { } while (0) 358# define EV_FREQUENT_CHECK do { } while (0)
308#endif 359#endif
309 360
… …
340# define inline_speed static noinline 391# define inline_speed static noinline
341#else 392#else
342# define inline_speed static inline 393# define inline_speed static inline
343#endif 394#endif
344 395
345#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
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
347 403
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
350 406
351typedef ev_watcher *W; 407typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
354 410
355#define ev_active(w) ((W)(w))->active 411#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 412#define ev_at(w) ((WT)(w))->at
357 413
358#if EV_USE_MONOTONIC 414#if EV_USE_REALTIME
359/* 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 */
360/* 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
361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
362#endif 422#endif
363 423
364#ifdef _WIN32 424#ifdef _WIN32
365# include "ev_win32.c" 425# include "ev_win32.c"
… …
374{ 434{
375 syserr_cb = cb; 435 syserr_cb = cb;
376} 436}
377 437
378static void noinline 438static void noinline
379syserr (const char *msg) 439ev_syserr (const char *msg)
380{ 440{
381 if (!msg) 441 if (!msg)
382 msg = "(libev) system error"; 442 msg = "(libev) system error";
383 443
384 if (syserr_cb) 444 if (syserr_cb)
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
432 492
433/*****************************************************************************/ 493/*****************************************************************************/
434 494
495/* file descriptor info structure */
435typedef struct 496typedef struct
436{ 497{
437 WL head; 498 WL head;
438 unsigned char events; 499 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 502 unsigned char unused;
503#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif
440#if EV_SELECT_IS_WINSOCKET 506#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle; 507 SOCKET handle;
442#endif 508#endif
443} ANFD; 509} ANFD;
444 510
511/* stores the pending event set for a given watcher */
445typedef struct 512typedef struct
446{ 513{
447 W w; 514 W w;
448 int events; 515 int events; /* the pending event set for the given watcher */
449} ANPENDING; 516} ANPENDING;
450 517
451#if EV_USE_INOTIFY 518#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 519/* hash table entry per inotify-id */
453typedef struct 520typedef struct
… …
456} ANFS; 523} ANFS;
457#endif 524#endif
458 525
459/* Heap Entry */ 526/* Heap Entry */
460#if EV_HEAP_CACHE_AT 527#if EV_HEAP_CACHE_AT
528 /* a heap element */
461 typedef struct { 529 typedef struct {
462 ev_tstamp at; 530 ev_tstamp at;
463 WT w; 531 WT w;
464 } ANHE; 532 } ANHE;
465 533
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 534 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 535 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 536 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else 537#else
538 /* a heap element */
470 typedef WT ANHE; 539 typedef WT ANHE;
471 540
472 #define ANHE_w(he) (he) 541 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 542 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 543 #define ANHE_at_cache(he)
… …
500 569
501#endif 570#endif
502 571
503/*****************************************************************************/ 572/*****************************************************************************/
504 573
574#ifndef EV_HAVE_EV_TIME
505ev_tstamp 575ev_tstamp
506ev_time (void) 576ev_time (void)
507{ 577{
508#if EV_USE_REALTIME 578#if EV_USE_REALTIME
579 if (expect_true (have_realtime))
580 {
509 struct timespec ts; 581 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 582 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 583 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 584 }
585#endif
586
513 struct timeval tv; 587 struct timeval tv;
514 gettimeofday (&tv, 0); 588 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 589 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 590}
591#endif
518 592
519ev_tstamp inline_size 593inline_size ev_tstamp
520get_clock (void) 594get_clock (void)
521{ 595{
522#if EV_USE_MONOTONIC 596#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 597 if (expect_true (have_monotonic))
524 { 598 {
… …
557 struct timeval tv; 631 struct timeval tv;
558 632
559 tv.tv_sec = (time_t)delay; 633 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561 635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */
562 select (0, 0, 0, 0, &tv); 639 select (0, 0, 0, 0, &tv);
563#endif 640#endif
564 } 641 }
565} 642}
566 643
567/*****************************************************************************/ 644/*****************************************************************************/
568 645
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570 647
571int inline_size 648/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */
650inline_size int
572array_nextsize (int elem, int cur, int cnt) 651array_nextsize (int elem, int cur, int cnt)
573{ 652{
574 int ncur = cur + 1; 653 int ncur = cur + 1;
575 654
576 do 655 do
… …
593array_realloc (int elem, void *base, int *cur, int cnt) 672array_realloc (int elem, void *base, int *cur, int cnt)
594{ 673{
595 *cur = array_nextsize (elem, *cur, cnt); 674 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 675 return ev_realloc (base, elem * *cur);
597} 676}
677
678#define array_init_zero(base,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 680
599#define array_needsize(type,base,cur,cnt,init) \ 681#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 682 if (expect_false ((cnt) > (cur))) \
601 { \ 683 { \
602 int ocur_ = (cur); \ 684 int ocur_ = (cur); \
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 696 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 697 }
616#endif 698#endif
617 699
618#define array_free(stem, idx) \ 700#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620 702
621/*****************************************************************************/ 703/*****************************************************************************/
704
705/* dummy callback for pending events */
706static void noinline
707pendingcb (EV_P_ ev_prepare *w, int revents)
708{
709}
622 710
623void noinline 711void noinline
624ev_feed_event (EV_P_ void *w, int revents) 712ev_feed_event (EV_P_ void *w, int revents)
625{ 713{
626 W w_ = (W)w; 714 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 723 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 724 pendings [pri][w_->pending - 1].events = revents;
637 } 725 }
638} 726}
639 727
640void inline_speed 728inline_speed void
729feed_reverse (EV_P_ W w)
730{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
732 rfeeds [rfeedcnt++] = w;
733}
734
735inline_size void
736feed_reverse_done (EV_P_ int revents)
737{
738 do
739 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
740 while (rfeedcnt);
741}
742
743inline_speed void
641queue_events (EV_P_ W *events, int eventcnt, int type) 744queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 745{
643 int i; 746 int i;
644 747
645 for (i = 0; i < eventcnt; ++i) 748 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 749 ev_feed_event (EV_A_ events [i], type);
647} 750}
648 751
649/*****************************************************************************/ 752/*****************************************************************************/
650 753
651void inline_size 754inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 755fd_event (EV_P_ int fd, int revents)
666{ 756{
667 ANFD *anfd = anfds + fd; 757 ANFD *anfd = anfds + fd;
668 ev_io *w; 758 ev_io *w;
669 759
… …
681{ 771{
682 if (fd >= 0 && fd < anfdmax) 772 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 773 fd_event (EV_A_ fd, revents);
684} 774}
685 775
686void inline_size 776/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */
778inline_size void
687fd_reify (EV_P) 779fd_reify (EV_P)
688{ 780{
689 int i; 781 int i;
690 782
691 for (i = 0; i < fdchangecnt; ++i) 783 for (i = 0; i < fdchangecnt; ++i)
… …
700 events |= (unsigned char)w->events; 792 events |= (unsigned char)w->events;
701 793
702#if EV_SELECT_IS_WINSOCKET 794#if EV_SELECT_IS_WINSOCKET
703 if (events) 795 if (events)
704 { 796 {
705 unsigned long argp; 797 unsigned long arg;
706 #ifdef EV_FD_TO_WIN32_HANDLE 798 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else 800 #else
709 anfd->handle = _get_osfhandle (fd); 801 anfd->handle = _get_osfhandle (fd);
710 #endif 802 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712 } 804 }
713#endif 805#endif
714 806
715 { 807 {
716 unsigned char o_events = anfd->events; 808 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify; 809 unsigned char o_reify = anfd->reify;
718 810
719 anfd->reify = 0; 811 anfd->reify = 0;
720 anfd->events = events; 812 anfd->events = events;
721 813
722 if (o_events != events || o_reify & EV_IOFDSET) 814 if (o_events != events || o_reify & EV__IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 815 backend_modify (EV_A_ fd, o_events, events);
724 } 816 }
725 } 817 }
726 818
727 fdchangecnt = 0; 819 fdchangecnt = 0;
728} 820}
729 821
730void inline_size 822/* something about the given fd changed */
823inline_size void
731fd_change (EV_P_ int fd, int flags) 824fd_change (EV_P_ int fd, int flags)
732{ 825{
733 unsigned char reify = anfds [fd].reify; 826 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 827 anfds [fd].reify |= flags;
735 828
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 833 fdchanges [fdchangecnt - 1] = fd;
741 } 834 }
742} 835}
743 836
744void inline_speed 837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void
745fd_kill (EV_P_ int fd) 839fd_kill (EV_P_ int fd)
746{ 840{
747 ev_io *w; 841 ev_io *w;
748 842
749 while ((w = (ev_io *)anfds [fd].head)) 843 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 845 ev_io_stop (EV_A_ w);
752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753 } 847 }
754} 848}
755 849
756int inline_size 850/* check whether the given fd is atcually valid, for error recovery */
851inline_size int
757fd_valid (int fd) 852fd_valid (int fd)
758{ 853{
759#ifdef _WIN32 854#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 855 return _get_osfhandle (fd) != -1;
761#else 856#else
… …
769{ 864{
770 int fd; 865 int fd;
771 866
772 for (fd = 0; fd < anfdmax; ++fd) 867 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 868 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 869 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 870 fd_kill (EV_A_ fd);
776} 871}
777 872
778/* called on ENOMEM in select/poll to kill some fds and retry */ 873/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 874static void noinline
… …
797 892
798 for (fd = 0; fd < anfdmax; ++fd) 893 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 894 if (anfds [fd].events)
800 { 895 {
801 anfds [fd].events = 0; 896 anfds [fd].events = 0;
897 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 898 fd_change (EV_A_ fd, EV__IOFDSET | 1);
803 } 899 }
804} 900}
805 901
806/*****************************************************************************/ 902/*****************************************************************************/
807 903
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 919#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 920#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 921#define UPHEAP_DONE(p,k) ((p) == (k))
826 922
827/* away from the root */ 923/* away from the root */
828void inline_speed 924inline_speed void
829downheap (ANHE *heap, int N, int k) 925downheap (ANHE *heap, int N, int k)
830{ 926{
831 ANHE he = heap [k]; 927 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 928 ANHE *E = heap + N + HEAP0;
833 929
… …
873#define HEAP0 1 969#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 970#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 971#define UPHEAP_DONE(p,k) (!(p))
876 972
877/* away from the root */ 973/* away from the root */
878void inline_speed 974inline_speed void
879downheap (ANHE *heap, int N, int k) 975downheap (ANHE *heap, int N, int k)
880{ 976{
881 ANHE he = heap [k]; 977 ANHE he = heap [k];
882 978
883 for (;;) 979 for (;;)
… …
903 ev_active (ANHE_w (he)) = k; 999 ev_active (ANHE_w (he)) = k;
904} 1000}
905#endif 1001#endif
906 1002
907/* towards the root */ 1003/* towards the root */
908void inline_speed 1004inline_speed void
909upheap (ANHE *heap, int k) 1005upheap (ANHE *heap, int k)
910{ 1006{
911 ANHE he = heap [k]; 1007 ANHE he = heap [k];
912 1008
913 for (;;) 1009 for (;;)
… …
924 1020
925 heap [k] = he; 1021 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1022 ev_active (ANHE_w (he)) = k;
927} 1023}
928 1024
929void inline_size 1025/* move an element suitably so it is in a correct place */
1026inline_size void
930adjustheap (ANHE *heap, int N, int k) 1027adjustheap (ANHE *heap, int N, int k)
931{ 1028{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933 upheap (heap, k); 1030 upheap (heap, k);
934 else 1031 else
935 downheap (heap, N, k); 1032 downheap (heap, N, k);
936} 1033}
937 1034
938/* rebuild the heap: this function is used only once and executed rarely */ 1035/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size 1036inline_size void
940reheap (ANHE *heap, int N) 1037reheap (ANHE *heap, int N)
941{ 1038{
942 int i; 1039 int i;
1040
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1041 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1042 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1043 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1044 upheap (heap, i + HEAP0);
947} 1045}
948 1046
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1047/*****************************************************************************/
965 1048
1049/* associate signal watchers to a signal signal */
966typedef struct 1050typedef struct
967{ 1051{
968 WL head; 1052 WL head;
969 EV_ATOMIC_T gotsig; 1053 EV_ATOMIC_T gotsig;
970} ANSIG; 1054} ANSIG;
… …
972static ANSIG *signals; 1056static ANSIG *signals;
973static int signalmax; 1057static int signalmax;
974 1058
975static EV_ATOMIC_T gotsig; 1059static EV_ATOMIC_T gotsig;
976 1060
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988
989/*****************************************************************************/ 1061/*****************************************************************************/
990 1062
991void inline_speed 1063/* used to prepare libev internal fd's */
1064/* this is not fork-safe */
1065inline_speed void
992fd_intern (int fd) 1066fd_intern (int fd)
993{ 1067{
994#ifdef _WIN32 1068#ifdef _WIN32
995 int arg = 1; 1069 unsigned long arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else 1071#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC); 1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK); 1073 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif 1074#endif
1001} 1075}
1002 1076
1003static void noinline 1077static void noinline
1004evpipe_init (EV_P) 1078evpipe_init (EV_P)
1005{ 1079{
1006 if (!ev_is_active (&pipeev)) 1080 if (!ev_is_active (&pipe_w))
1007 { 1081 {
1008#if EV_USE_EVENTFD 1082#if EV_USE_EVENTFD
1009 if ((evfd = eventfd (0, 0)) >= 0) 1083 if ((evfd = eventfd (0, 0)) >= 0)
1010 { 1084 {
1011 evpipe [0] = -1; 1085 evpipe [0] = -1;
1012 fd_intern (evfd); 1086 fd_intern (evfd);
1013 ev_io_set (&pipeev, evfd, EV_READ); 1087 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1088 }
1015 else 1089 else
1016#endif 1090#endif
1017 { 1091 {
1018 while (pipe (evpipe)) 1092 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1093 ev_syserr ("(libev) error creating signal/async pipe");
1020 1094
1021 fd_intern (evpipe [0]); 1095 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1096 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1097 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1098 }
1025 1099
1026 ev_io_start (EV_A_ &pipeev); 1100 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1102 }
1029} 1103}
1030 1104
1031void inline_size 1105inline_size void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1107{
1034 if (!*flag) 1108 if (!*flag)
1035 { 1109 {
1036 int old_errno = errno; /* save errno because write might clobber it */ 1110 int old_errno = errno; /* save errno because write might clobber it */
… …
1049 1123
1050 errno = old_errno; 1124 errno = old_errno;
1051 } 1125 }
1052} 1126}
1053 1127
1128/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */
1054static void 1130static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1131pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1132{
1057#if EV_USE_EVENTFD 1133#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1134 if (evfd >= 0)
… …
1114ev_feed_signal_event (EV_P_ int signum) 1190ev_feed_signal_event (EV_P_ int signum)
1115{ 1191{
1116 WL w; 1192 WL w;
1117 1193
1118#if EV_MULTIPLICITY 1194#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120#endif 1196#endif
1121 1197
1122 --signum; 1198 --signum;
1123 1199
1124 if (signum < 0 || signum >= signalmax) 1200 if (signum < 0 || signum >= signalmax)
… …
1140 1216
1141#ifndef WIFCONTINUED 1217#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1218# define WIFCONTINUED(status) 0
1143#endif 1219#endif
1144 1220
1145void inline_speed 1221/* handle a single child status event */
1222inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1223child_reap (EV_P_ int chain, int pid, int status)
1147{ 1224{
1148 ev_child *w; 1225 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1227
… …
1163 1240
1164#ifndef WCONTINUED 1241#ifndef WCONTINUED
1165# define WCONTINUED 0 1242# define WCONTINUED 0
1166#endif 1243#endif
1167 1244
1245/* called on sigchld etc., calls waitpid */
1168static void 1246static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1247childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1248{
1171 int pid, status; 1249 int pid, status;
1172 1250
… …
1253 /* kqueue is borked on everything but netbsd apparently */ 1331 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */ 1332 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE; 1333 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1334#endif
1257#ifdef __APPLE__ 1335#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1336 /* only select works correctly on that "unix-certified" platform */
1259 flags &= ~EVBACKEND_POLL; 1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260#endif 1339#endif
1261 1340
1262 return flags; 1341 return flags;
1263} 1342}
1264 1343
… …
1284ev_loop_count (EV_P) 1363ev_loop_count (EV_P)
1285{ 1364{
1286 return loop_count; 1365 return loop_count;
1287} 1366}
1288 1367
1368unsigned int
1369ev_loop_depth (EV_P)
1370{
1371 return loop_depth;
1372}
1373
1289void 1374void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1376{
1292 io_blocktime = interval; 1377 io_blocktime = interval;
1293} 1378}
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1382{
1298 timeout_blocktime = interval; 1383 timeout_blocktime = interval;
1299} 1384}
1300 1385
1386/* initialise a loop structure, must be zero-initialised */
1301static void noinline 1387static void noinline
1302loop_init (EV_P_ unsigned int flags) 1388loop_init (EV_P_ unsigned int flags)
1303{ 1389{
1304 if (!backend) 1390 if (!backend)
1305 { 1391 {
1392#if EV_USE_REALTIME
1393 if (!have_realtime)
1394 {
1395 struct timespec ts;
1396
1397 if (!clock_gettime (CLOCK_REALTIME, &ts))
1398 have_realtime = 1;
1399 }
1400#endif
1401
1306#if EV_USE_MONOTONIC 1402#if EV_USE_MONOTONIC
1403 if (!have_monotonic)
1307 { 1404 {
1308 struct timespec ts; 1405 struct timespec ts;
1406
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1408 have_monotonic = 1;
1311 } 1409 }
1312#endif 1410#endif
1313 1411
1314 ev_rt_now = ev_time (); 1412 ev_rt_now = ev_time ();
1315 mn_now = get_clock (); 1413 mn_now = get_clock ();
1316 now_floor = mn_now; 1414 now_floor = mn_now;
1317 rtmn_diff = ev_rt_now - mn_now; 1415 rtmn_diff = ev_rt_now - mn_now;
1416 invoke_cb = ev_invoke_pending;
1318 1417
1319 io_blocktime = 0.; 1418 io_blocktime = 0.;
1320 timeout_blocktime = 0.; 1419 timeout_blocktime = 0.;
1321 backend = 0; 1420 backend = 0;
1322 backend_fd = -1; 1421 backend_fd = -1;
… …
1353#endif 1452#endif
1354#if EV_USE_SELECT 1453#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1454 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1455#endif
1357 1456
1457 ev_prepare_init (&pending_w, pendingcb);
1458
1358 ev_init (&pipeev, pipecb); 1459 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1460 ev_set_priority (&pipe_w, EV_MAXPRI);
1360 } 1461 }
1361} 1462}
1362 1463
1464/* free up a loop structure */
1363static void noinline 1465static void noinline
1364loop_destroy (EV_P) 1466loop_destroy (EV_P)
1365{ 1467{
1366 int i; 1468 int i;
1367 1469
1368 if (ev_is_active (&pipeev)) 1470 if (ev_is_active (&pipe_w))
1369 { 1471 {
1370 ev_ref (EV_A); /* signal watcher */ 1472 ev_ref (EV_A); /* signal watcher */
1371 ev_io_stop (EV_A_ &pipeev); 1473 ev_io_stop (EV_A_ &pipe_w);
1372 1474
1373#if EV_USE_EVENTFD 1475#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1476 if (evfd >= 0)
1375 close (evfd); 1477 close (evfd);
1376#endif 1478#endif
… …
1415 } 1517 }
1416 1518
1417 ev_free (anfds); anfdmax = 0; 1519 ev_free (anfds); anfdmax = 0;
1418 1520
1419 /* have to use the microsoft-never-gets-it-right macro */ 1521 /* have to use the microsoft-never-gets-it-right macro */
1522 array_free (rfeed, EMPTY);
1420 array_free (fdchange, EMPTY); 1523 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 1524 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 1525#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 1526 array_free (periodic, EMPTY);
1424#endif 1527#endif
… …
1433 1536
1434 backend = 0; 1537 backend = 0;
1435} 1538}
1436 1539
1437#if EV_USE_INOTIFY 1540#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 1541inline_size void infy_fork (EV_P);
1439#endif 1542#endif
1440 1543
1441void inline_size 1544inline_size void
1442loop_fork (EV_P) 1545loop_fork (EV_P)
1443{ 1546{
1444#if EV_USE_PORT 1547#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1548 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 1549#endif
… …
1452#endif 1555#endif
1453#if EV_USE_INOTIFY 1556#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 1557 infy_fork (EV_A);
1455#endif 1558#endif
1456 1559
1457 if (ev_is_active (&pipeev)) 1560 if (ev_is_active (&pipe_w))
1458 { 1561 {
1459 /* this "locks" the handlers against writing to the pipe */ 1562 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */ 1563 /* while we modify the fd vars */
1461 gotsig = 1; 1564 gotsig = 1;
1462#if EV_ASYNC_ENABLE 1565#if EV_ASYNC_ENABLE
1463 gotasync = 1; 1566 gotasync = 1;
1464#endif 1567#endif
1465 1568
1466 ev_ref (EV_A); 1569 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 1570 ev_io_stop (EV_A_ &pipe_w);
1468 1571
1469#if EV_USE_EVENTFD 1572#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1573 if (evfd >= 0)
1471 close (evfd); 1574 close (evfd);
1472#endif 1575#endif
… …
1477 close (evpipe [1]); 1580 close (evpipe [1]);
1478 } 1581 }
1479 1582
1480 evpipe_init (EV_A); 1583 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 1584 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 1585 pipecb (EV_A_ &pipe_w, EV_READ);
1483 } 1586 }
1484 1587
1485 postfork = 0; 1588 postfork = 0;
1486} 1589}
1487 1590
1488#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
1592
1489struct ev_loop * 1593struct ev_loop *
1490ev_loop_new (unsigned int flags) 1594ev_loop_new (unsigned int flags)
1491{ 1595{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1596 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1597
… …
1513{ 1617{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1618 postfork = 1; /* must be in line with ev_default_fork */
1515} 1619}
1516 1620
1517#if EV_VERIFY 1621#if EV_VERIFY
1518static void 1622static void noinline
1623verify_watcher (EV_P_ W w)
1624{
1625 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1626
1627 if (w->pending)
1628 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1629}
1630
1631static void noinline
1632verify_heap (EV_P_ ANHE *heap, int N)
1633{
1634 int i;
1635
1636 for (i = HEAP0; i < N + HEAP0; ++i)
1637 {
1638 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1639 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1640 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1641
1642 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1643 }
1644}
1645
1646static void noinline
1519array_check (W **ws, int cnt) 1647array_verify (EV_P_ W *ws, int cnt)
1520{ 1648{
1521 while (cnt--) 1649 while (cnt--)
1650 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1651 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1652 verify_watcher (EV_A_ ws [cnt]);
1653 }
1523} 1654}
1655#endif
1524 1656
1525static void 1657void
1526ev_loop_verify (EV_P) 1658ev_loop_verify (EV_P)
1527{ 1659{
1660#if EV_VERIFY
1528 int i; 1661 int i;
1662 WL w;
1529 1663
1664 assert (activecnt >= -1);
1665
1666 assert (fdchangemax >= fdchangecnt);
1667 for (i = 0; i < fdchangecnt; ++i)
1668 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1669
1670 assert (anfdmax >= 0);
1671 for (i = 0; i < anfdmax; ++i)
1672 for (w = anfds [i].head; w; w = w->next)
1673 {
1674 verify_watcher (EV_A_ (W)w);
1675 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1676 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1677 }
1678
1679 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 1680 verify_heap (EV_A_ timers, timercnt);
1681
1531#if EV_PERIODIC_ENABLE 1682#if EV_PERIODIC_ENABLE
1683 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 1684 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 1685#endif
1534 1686
1687 for (i = NUMPRI; i--; )
1688 {
1689 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 1690#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 1691 assert (idleall >= 0);
1692 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 1693 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 1694#endif
1695 }
1696
1539#if EV_FORK_ENABLE 1697#if EV_FORK_ENABLE
1698 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 1699 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 1700#endif
1542 array_check ((W **)prepares, preparecnt); 1701
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE 1702#if EV_ASYNC_ENABLE
1703 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1704 array_verify (EV_A_ (W *)asyncs, asynccnt);
1705#endif
1706
1707 assert (preparemax >= preparecnt);
1708 array_verify (EV_A_ (W *)prepares, preparecnt);
1709
1710 assert (checkmax >= checkcnt);
1711 array_verify (EV_A_ (W *)checks, checkcnt);
1712
1713# if 0
1714 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1715 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546#endif 1716# endif
1547}
1548#endif 1717#endif
1718}
1549 1719
1550#endif 1720#endif /* multiplicity */
1551 1721
1552#if EV_MULTIPLICITY 1722#if EV_MULTIPLICITY
1553struct ev_loop * 1723struct ev_loop *
1554ev_default_loop_init (unsigned int flags) 1724ev_default_loop_init (unsigned int flags)
1555#else 1725#else
… …
1588{ 1758{
1589#if EV_MULTIPLICITY 1759#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr; 1760 struct ev_loop *loop = ev_default_loop_ptr;
1591#endif 1761#endif
1592 1762
1763 ev_default_loop_ptr = 0;
1764
1593#ifndef _WIN32 1765#ifndef _WIN32
1594 ev_ref (EV_A); /* child watcher */ 1766 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev); 1767 ev_signal_stop (EV_A_ &childev);
1596#endif 1768#endif
1597 1769
… …
1603{ 1775{
1604#if EV_MULTIPLICITY 1776#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr; 1777 struct ev_loop *loop = ev_default_loop_ptr;
1606#endif 1778#endif
1607 1779
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 1780 postfork = 1; /* must be in line with ev_loop_fork */
1610} 1781}
1611 1782
1612/*****************************************************************************/ 1783/*****************************************************************************/
1613 1784
1614void 1785void
1615ev_invoke (EV_P_ void *w, int revents) 1786ev_invoke (EV_P_ void *w, int revents)
1616{ 1787{
1617 EV_CB_INVOKE ((W)w, revents); 1788 EV_CB_INVOKE ((W)w, revents);
1618} 1789}
1619 1790
1620void inline_speed 1791void
1621call_pending (EV_P) 1792ev_invoke_pending (EV_P)
1622{ 1793{
1623 int pri; 1794 int pri;
1624
1625 EV_FREQUENT_CHECK;
1626 1795
1627 for (pri = NUMPRI; pri--; ) 1796 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 1797 while (pendingcnt [pri])
1629 { 1798 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1799 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 1800
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1801 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1802 /* ^ this is no longer true, as pending_w could be here */
1635 1803
1636 p->w->pending = 0; 1804 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 1805 EV_CB_INVOKE (p->w, p->events);
1638 } 1806 EV_FREQUENT_CHECK;
1639 } 1807 }
1640
1641 EV_FREQUENT_CHECK;
1642} 1808}
1643 1809
1644#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1645void inline_size 1811/* make idle watchers pending. this handles the "call-idle */
1812/* only when higher priorities are idle" logic */
1813inline_size void
1646idle_reify (EV_P) 1814idle_reify (EV_P)
1647{ 1815{
1648 if (expect_false (idleall)) 1816 if (expect_false (idleall))
1649 { 1817 {
1650 int pri; 1818 int pri;
… …
1662 } 1830 }
1663 } 1831 }
1664} 1832}
1665#endif 1833#endif
1666 1834
1667void inline_size 1835/* make timers pending */
1836inline_size void
1668timers_reify (EV_P) 1837timers_reify (EV_P)
1669{ 1838{
1670 EV_FREQUENT_CHECK; 1839 EV_FREQUENT_CHECK;
1671 1840
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1841 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 1842 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1843 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 1844 {
1845 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1846
1847 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1848
1849 /* first reschedule or stop timer */
1850 if (w->repeat)
1851 {
1681 ev_at (w) += w->repeat; 1852 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 1853 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 1854 ev_at (w) = mn_now;
1684 1855
1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1856 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686 1857
1687 ANHE_at_cache (timers [HEAP0]); 1858 ANHE_at_cache (timers [HEAP0]);
1688 downheap (timers, timercnt, HEAP0); 1859 downheap (timers, timercnt, HEAP0);
1860 }
1861 else
1862 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1863
1864 EV_FREQUENT_CHECK;
1865 feed_reverse (EV_A_ (W)w);
1689 } 1866 }
1690 else 1867 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 1868
1693 EV_FREQUENT_CHECK;
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1869 feed_reverse_done (EV_A_ EV_TIMEOUT);
1695 } 1870 }
1696} 1871}
1697 1872
1698#if EV_PERIODIC_ENABLE 1873#if EV_PERIODIC_ENABLE
1699void inline_size 1874/* make periodics pending */
1875inline_size void
1700periodics_reify (EV_P) 1876periodics_reify (EV_P)
1701{ 1877{
1702 EV_FREQUENT_CHECK; 1878 EV_FREQUENT_CHECK;
1879
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1880 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 1881 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1882 int feed_count = 0;
1706 1883
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1884 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 1885 {
1886 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1887
1888 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1889
1890 /* first reschedule or stop timer */
1891 if (w->reschedule_cb)
1892 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1893 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 1894
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 1895 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 1896
1716 ANHE_at_cache (periodics [HEAP0]); 1897 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 1898 downheap (periodics, periodiccnt, HEAP0);
1899 }
1900 else if (w->interval)
1901 {
1902 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1903 /* if next trigger time is not sufficiently in the future, put it there */
1904 /* this might happen because of floating point inexactness */
1905 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1906 {
1907 ev_at (w) += w->interval;
1908
1909 /* if interval is unreasonably low we might still have a time in the past */
1910 /* so correct this. this will make the periodic very inexact, but the user */
1911 /* has effectively asked to get triggered more often than possible */
1912 if (ev_at (w) < ev_rt_now)
1913 ev_at (w) = ev_rt_now;
1914 }
1915
1916 ANHE_at_cache (periodics [HEAP0]);
1917 downheap (periodics, periodiccnt, HEAP0);
1918 }
1919 else
1920 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1921
1718 EV_FREQUENT_CHECK; 1922 EV_FREQUENT_CHECK;
1923 feed_reverse (EV_A_ (W)w);
1719 } 1924 }
1720 else if (w->interval) 1925 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 1926
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1927 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 1928 }
1745} 1929}
1746 1930
1931/* simply recalculate all periodics */
1932/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747static void noinline 1933static void noinline
1748periodics_reschedule (EV_P) 1934periodics_reschedule (EV_P)
1749{ 1935{
1750 int i; 1936 int i;
1751 1937
… …
1764 1950
1765 reheap (periodics, periodiccnt); 1951 reheap (periodics, periodiccnt);
1766} 1952}
1767#endif 1953#endif
1768 1954
1769void inline_speed 1955/* adjust all timers by a given offset */
1956static void noinline
1957timers_reschedule (EV_P_ ev_tstamp adjust)
1958{
1959 int i;
1960
1961 for (i = 0; i < timercnt; ++i)
1962 {
1963 ANHE *he = timers + i + HEAP0;
1964 ANHE_w (*he)->at += adjust;
1965 ANHE_at_cache (*he);
1966 }
1967}
1968
1969/* fetch new monotonic and realtime times from the kernel */
1970/* also detetc if there was a timejump, and act accordingly */
1971inline_speed void
1770time_update (EV_P_ ev_tstamp max_block) 1972time_update (EV_P_ ev_tstamp max_block)
1771{ 1973{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 1974#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 1975 if (expect_true (have_monotonic))
1776 { 1976 {
1977 int i;
1777 ev_tstamp odiff = rtmn_diff; 1978 ev_tstamp odiff = rtmn_diff;
1778 1979
1779 mn_now = get_clock (); 1980 mn_now = get_clock ();
1780 1981
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1982 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1807 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2009 mn_now = get_clock ();
1809 now_floor = mn_now; 2010 now_floor = mn_now;
1810 } 2011 }
1811 2012
2013 /* no timer adjustment, as the monotonic clock doesn't jump */
2014 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2015# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2016 periodics_reschedule (EV_A);
1814# endif 2017# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2018 }
1818 else 2019 else
1819#endif 2020#endif
1820 { 2021 {
1821 ev_rt_now = ev_time (); 2022 ev_rt_now = ev_time ();
1822 2023
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2024 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 { 2025 {
2026 /* adjust timers. this is easy, as the offset is the same for all of them */
2027 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2029 periodics_reschedule (EV_A);
1827#endif 2030#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2031 }
1836 2032
1837 mn_now = ev_rt_now; 2033 mn_now = ev_rt_now;
1838 } 2034 }
1839} 2035}
1840 2036
1841void 2037void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2038ev_loop (EV_P_ int flags)
1857{ 2039{
2040 ++loop_depth;
2041
1858 loop_done = EVUNLOOP_CANCEL; 2042 loop_done = EVUNLOOP_CANCEL;
1859 2043
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2044 invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1861 2045
1862 do 2046 do
1863 { 2047 {
2048#if EV_VERIFY >= 2
2049 ev_loop_verify (EV_A);
2050#endif
2051
1864#ifndef _WIN32 2052#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2053 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2054 if (expect_false (getpid () != curpid))
1867 { 2055 {
1868 curpid = getpid (); 2056 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2062 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2063 if (expect_false (postfork))
1876 if (forkcnt) 2064 if (forkcnt)
1877 { 2065 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2066 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2067 invoke_cb (EV_A);
1880 } 2068 }
1881#endif 2069#endif
1882 2070
1883 /* queue prepare watchers (and execute them) */ 2071 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2072 if (expect_false (preparecnt))
1885 { 2073 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2074 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2075 invoke_cb (EV_A);
1888 } 2076 }
1889
1890 if (expect_false (!activecnt))
1891 break;
1892 2077
1893 /* we might have forked, so reify kernel state if necessary */ 2078 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2079 if (expect_false (postfork))
1895 loop_fork (EV_A); 2080 loop_fork (EV_A);
1896 2081
… …
1902 ev_tstamp waittime = 0.; 2087 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2088 ev_tstamp sleeptime = 0.;
1904 2089
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2090 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906 { 2091 {
2092 /* remember old timestamp for io_blocktime calculation */
2093 ev_tstamp prev_mn_now = mn_now;
2094
1907 /* update time to cancel out callback processing overhead */ 2095 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100); 2096 time_update (EV_A_ 1e100);
1909 2097
1910 waittime = MAX_BLOCKTIME; 2098 waittime = MAX_BLOCKTIME;
1911 2099
… …
1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2109 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922 if (waittime > to) waittime = to; 2110 if (waittime > to) waittime = to;
1923 } 2111 }
1924#endif 2112#endif
1925 2113
2114 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2115 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2116 waittime = timeout_blocktime;
1928 2117
1929 sleeptime = waittime - backend_fudge; 2118 /* extra check because io_blocktime is commonly 0 */
1930
1931 if (expect_true (sleeptime > io_blocktime)) 2119 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 2120 {
2121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2122
2123 if (sleeptime > waittime - backend_fudge)
2124 sleeptime = waittime - backend_fudge;
2125
2126 if (expect_true (sleeptime > 0.))
2127 {
1936 ev_sleep (sleeptime); 2128 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2129 waittime -= sleeptime;
2130 }
1938 } 2131 }
1939 } 2132 }
1940 2133
1941 ++loop_count; 2134 ++loop_count;
1942 backend_poll (EV_A_ waittime); 2135 backend_poll (EV_A_ waittime);
… …
1958 2151
1959 /* queue check watchers, to be executed first */ 2152 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2153 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1962 2155
1963 call_pending (EV_A); 2156 invoke_cb (EV_A);
1964 } 2157 }
1965 while (expect_true ( 2158 while (expect_true (
1966 activecnt 2159 activecnt
1967 && !loop_done 2160 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2161 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 )); 2162 ));
1970 2163
1971 if (loop_done == EVUNLOOP_ONE) 2164 if (loop_done == EVUNLOOP_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2165 loop_done = EVUNLOOP_CANCEL;
2166
2167 --loop_depth;
1973} 2168}
1974 2169
1975void 2170void
1976ev_unloop (EV_P_ int how) 2171ev_unloop (EV_P_ int how)
1977{ 2172{
1978 loop_done = how; 2173 loop_done = how;
1979} 2174}
1980 2175
2176void
2177ev_ref (EV_P)
2178{
2179 ++activecnt;
2180}
2181
2182void
2183ev_unref (EV_P)
2184{
2185 --activecnt;
2186}
2187
2188void
2189ev_now_update (EV_P)
2190{
2191 time_update (EV_A_ 1e100);
2192}
2193
2194void
2195ev_suspend (EV_P)
2196{
2197 ev_now_update (EV_A);
2198}
2199
2200void
2201ev_resume (EV_P)
2202{
2203 ev_tstamp mn_prev = mn_now;
2204
2205 ev_now_update (EV_A);
2206 timers_reschedule (EV_A_ mn_now - mn_prev);
2207#if EV_PERIODIC_ENABLE
2208 /* TODO: really do this? */
2209 periodics_reschedule (EV_A);
2210#endif
2211}
2212
1981/*****************************************************************************/ 2213/*****************************************************************************/
2214/* singly-linked list management, used when the expected list length is short */
1982 2215
1983void inline_size 2216inline_size void
1984wlist_add (WL *head, WL elem) 2217wlist_add (WL *head, WL elem)
1985{ 2218{
1986 elem->next = *head; 2219 elem->next = *head;
1987 *head = elem; 2220 *head = elem;
1988} 2221}
1989 2222
1990void inline_size 2223inline_size void
1991wlist_del (WL *head, WL elem) 2224wlist_del (WL *head, WL elem)
1992{ 2225{
1993 while (*head) 2226 while (*head)
1994 { 2227 {
1995 if (*head == elem) 2228 if (*head == elem)
… …
2000 2233
2001 head = &(*head)->next; 2234 head = &(*head)->next;
2002 } 2235 }
2003} 2236}
2004 2237
2005void inline_speed 2238/* internal, faster, version of ev_clear_pending */
2239inline_speed void
2006clear_pending (EV_P_ W w) 2240clear_pending (EV_P_ W w)
2007{ 2241{
2008 if (w->pending) 2242 if (w->pending)
2009 { 2243 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2244 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2245 w->pending = 0;
2012 } 2246 }
2013} 2247}
2014 2248
2015int 2249int
… …
2019 int pending = w_->pending; 2253 int pending = w_->pending;
2020 2254
2021 if (expect_true (pending)) 2255 if (expect_true (pending))
2022 { 2256 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2257 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2258 p->w = (W)&pending_w;
2024 w_->pending = 0; 2259 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2260 return p->events;
2027 } 2261 }
2028 else 2262 else
2029 return 0; 2263 return 0;
2030} 2264}
2031 2265
2032void inline_size 2266inline_size void
2033pri_adjust (EV_P_ W w) 2267pri_adjust (EV_P_ W w)
2034{ 2268{
2035 int pri = w->priority; 2269 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2270 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2271 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2272 ev_set_priority (w, pri);
2039} 2273}
2040 2274
2041void inline_speed 2275inline_speed void
2042ev_start (EV_P_ W w, int active) 2276ev_start (EV_P_ W w, int active)
2043{ 2277{
2044 pri_adjust (EV_A_ w); 2278 pri_adjust (EV_A_ w);
2045 w->active = active; 2279 w->active = active;
2046 ev_ref (EV_A); 2280 ev_ref (EV_A);
2047} 2281}
2048 2282
2049void inline_size 2283inline_size void
2050ev_stop (EV_P_ W w) 2284ev_stop (EV_P_ W w)
2051{ 2285{
2052 ev_unref (EV_A); 2286 ev_unref (EV_A);
2053 w->active = 0; 2287 w->active = 0;
2054} 2288}
… …
2061 int fd = w->fd; 2295 int fd = w->fd;
2062 2296
2063 if (expect_false (ev_is_active (w))) 2297 if (expect_false (ev_is_active (w)))
2064 return; 2298 return;
2065 2299
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2300 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2301 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2302
2068 EV_FREQUENT_CHECK; 2303 EV_FREQUENT_CHECK;
2069 2304
2070 ev_start (EV_A_ (W)w, 1); 2305 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2306 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2307 wlist_add (&anfds[fd].head, (WL)w);
2073 2308
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2309 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2075 w->events &= ~EV_IOFDSET; 2310 w->events &= ~EV__IOFDSET;
2076 2311
2077 EV_FREQUENT_CHECK; 2312 EV_FREQUENT_CHECK;
2078} 2313}
2079 2314
2080void noinline 2315void noinline
… …
2082{ 2317{
2083 clear_pending (EV_A_ (W)w); 2318 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2319 if (expect_false (!ev_is_active (w)))
2085 return; 2320 return;
2086 2321
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2322 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088 2323
2089 EV_FREQUENT_CHECK; 2324 EV_FREQUENT_CHECK;
2090 2325
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2326 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2327 ev_stop (EV_A_ (W)w);
… …
2102 if (expect_false (ev_is_active (w))) 2337 if (expect_false (ev_is_active (w)))
2103 return; 2338 return;
2104 2339
2105 ev_at (w) += mn_now; 2340 ev_at (w) += mn_now;
2106 2341
2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2342 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108 2343
2109 EV_FREQUENT_CHECK; 2344 EV_FREQUENT_CHECK;
2110 2345
2111 ++timercnt; 2346 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2347 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2350 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2351 upheap (timers, ev_active (w));
2117 2352
2118 EV_FREQUENT_CHECK; 2353 EV_FREQUENT_CHECK;
2119 2354
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2355 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2356}
2122 2357
2123void noinline 2358void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2359ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2360{
… …
2130 EV_FREQUENT_CHECK; 2365 EV_FREQUENT_CHECK;
2131 2366
2132 { 2367 {
2133 int active = ev_active (w); 2368 int active = ev_active (w);
2134 2369
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2370 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2371
2137 --timercnt; 2372 --timercnt;
2138 2373
2139 if (expect_true (active < timercnt + HEAP0)) 2374 if (expect_true (active < timercnt + HEAP0))
2140 { 2375 {
… …
2184 2419
2185 if (w->reschedule_cb) 2420 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2421 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2422 else if (w->interval)
2188 { 2423 {
2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2424 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190 /* this formula differs from the one in periodic_reify because we do not always round up */ 2425 /* this formula differs from the one in periodic_reify because we do not always round up */
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2426 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 } 2427 }
2193 else 2428 else
2194 ev_at (w) = w->offset; 2429 ev_at (w) = w->offset;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2437 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2438 upheap (periodics, ev_active (w));
2204 2439
2205 EV_FREQUENT_CHECK; 2440 EV_FREQUENT_CHECK;
2206 2441
2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2442 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208} 2443}
2209 2444
2210void noinline 2445void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2446ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2447{
… …
2217 EV_FREQUENT_CHECK; 2452 EV_FREQUENT_CHECK;
2218 2453
2219 { 2454 {
2220 int active = ev_active (w); 2455 int active = ev_active (w);
2221 2456
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2457 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 2458
2224 --periodiccnt; 2459 --periodiccnt;
2225 2460
2226 if (expect_true (active < periodiccnt + HEAP0)) 2461 if (expect_true (active < periodiccnt + HEAP0))
2227 { 2462 {
… …
2250 2485
2251void noinline 2486void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 2487ev_signal_start (EV_P_ ev_signal *w)
2253{ 2488{
2254#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2490 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif 2491#endif
2257 if (expect_false (ev_is_active (w))) 2492 if (expect_false (ev_is_active (w)))
2258 return; 2493 return;
2259 2494
2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2495 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2261 2496
2262 evpipe_init (EV_A); 2497 evpipe_init (EV_A);
2263 2498
2264 EV_FREQUENT_CHECK; 2499 EV_FREQUENT_CHECK;
2265 2500
… …
2268 sigset_t full, prev; 2503 sigset_t full, prev;
2269 sigfillset (&full); 2504 sigfillset (&full);
2270 sigprocmask (SIG_SETMASK, &full, &prev); 2505 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif 2506#endif
2272 2507
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2508 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274 2509
2275#ifndef _WIN32 2510#ifndef _WIN32
2276 sigprocmask (SIG_SETMASK, &prev, 0); 2511 sigprocmask (SIG_SETMASK, &prev, 0);
2277#endif 2512#endif
2278 } 2513 }
… …
2316 2551
2317void 2552void
2318ev_child_start (EV_P_ ev_child *w) 2553ev_child_start (EV_P_ ev_child *w)
2319{ 2554{
2320#if EV_MULTIPLICITY 2555#if EV_MULTIPLICITY
2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2556 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322#endif 2557#endif
2323 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
2324 return; 2559 return;
2325 2560
2326 EV_FREQUENT_CHECK; 2561 EV_FREQUENT_CHECK;
… …
2351# ifdef _WIN32 2586# ifdef _WIN32
2352# undef lstat 2587# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 2588# define lstat(a,b) _stati64 (a,b)
2354# endif 2589# endif
2355 2590
2356#define DEF_STAT_INTERVAL 5.0074891 2591#define DEF_STAT_INTERVAL 5.0074891
2592#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357#define MIN_STAT_INTERVAL 0.1074891 2593#define MIN_STAT_INTERVAL 0.1074891
2358 2594
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2595static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360 2596
2361#if EV_USE_INOTIFY 2597#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192 2598# define EV_INOTIFY_BUFSIZE 8192
… …
2366{ 2602{
2367 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); 2603 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);
2368 2604
2369 if (w->wd < 0) 2605 if (w->wd < 0)
2370 { 2606 {
2607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2608 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372 2609
2373 /* monitor some parent directory for speedup hints */ 2610 /* monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2611 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 2612 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2613 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 2614 {
2378 char path [4096]; 2615 char path [4096];
2379 strcpy (path, w->path); 2616 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2620 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2621 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 2622
2386 char *pend = strrchr (path, '/'); 2623 char *pend = strrchr (path, '/');
2387 2624
2388 if (!pend) 2625 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 2626 break;
2390 2627
2391 *pend = 0; 2628 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 2629 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 2630 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2631 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 2632 }
2396 } 2633 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 2634
2400 if (w->wd >= 0) 2635 if (w->wd >= 0)
2636 {
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2637 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2638
2639 /* now local changes will be tracked by inotify, but remote changes won't */
2640 /* unless the filesystem it known to be local, we therefore still poll */
2641 /* also do poll on <2.6.25, but with normal frequency */
2642 struct statfs sfs;
2643
2644 if (fs_2625 && !statfs (w->path, &sfs))
2645 if (sfs.f_type == 0x1373 /* devfs */
2646 || sfs.f_type == 0xEF53 /* ext2/3 */
2647 || sfs.f_type == 0x3153464a /* jfs */
2648 || sfs.f_type == 0x52654973 /* reiser3 */
2649 || sfs.f_type == 0x01021994 /* tempfs */
2650 || sfs.f_type == 0x58465342 /* xfs */)
2651 return;
2652
2653 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2654 ev_timer_again (EV_A_ &w->timer);
2655 }
2402} 2656}
2403 2657
2404static void noinline 2658static void noinline
2405infy_del (EV_P_ ev_stat *w) 2659infy_del (EV_P_ ev_stat *w)
2406{ 2660{
… …
2420 2674
2421static void noinline 2675static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2676infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 2677{
2424 if (slot < 0) 2678 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 2679 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2680 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 2681 infy_wd (EV_A_ slot, wd, ev);
2428 else 2682 else
2429 { 2683 {
2430 WL w_; 2684 WL w_;
… …
2436 2690
2437 if (w->wd == wd || wd == -1) 2691 if (w->wd == wd || wd == -1)
2438 { 2692 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2693 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 2694 {
2695 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441 w->wd = -1; 2696 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 2697 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 2698 }
2444 2699
2445 stat_timer_cb (EV_A_ &w->timer, 0); 2700 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2458 2713
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2714 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2715 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461} 2716}
2462 2717
2463void inline_size 2718inline_size void
2719check_2625 (EV_P)
2720{
2721 /* kernels < 2.6.25 are borked
2722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2723 */
2724 struct utsname buf;
2725 int major, minor, micro;
2726
2727 if (uname (&buf))
2728 return;
2729
2730 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2731 return;
2732
2733 if (major < 2
2734 || (major == 2 && minor < 6)
2735 || (major == 2 && minor == 6 && micro < 25))
2736 return;
2737
2738 fs_2625 = 1;
2739}
2740
2741inline_size void
2464infy_init (EV_P) 2742infy_init (EV_P)
2465{ 2743{
2466 if (fs_fd != -2) 2744 if (fs_fd != -2)
2467 return; 2745 return;
2746
2747 fs_fd = -1;
2748
2749 check_2625 (EV_A);
2468 2750
2469 fs_fd = inotify_init (); 2751 fs_fd = inotify_init ();
2470 2752
2471 if (fs_fd >= 0) 2753 if (fs_fd >= 0)
2472 { 2754 {
… …
2474 ev_set_priority (&fs_w, EV_MAXPRI); 2756 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 2757 ev_io_start (EV_A_ &fs_w);
2476 } 2758 }
2477} 2759}
2478 2760
2479void inline_size 2761inline_size void
2480infy_fork (EV_P) 2762infy_fork (EV_P)
2481{ 2763{
2482 int slot; 2764 int slot;
2483 2765
2484 if (fs_fd < 0) 2766 if (fs_fd < 0)
… …
2500 w->wd = -1; 2782 w->wd = -1;
2501 2783
2502 if (fs_fd >= 0) 2784 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 2785 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else 2786 else
2505 ev_timer_start (EV_A_ &w->timer); 2787 ev_timer_again (EV_A_ &w->timer);
2506 } 2788 }
2507
2508 } 2789 }
2509} 2790}
2510 2791
2792#endif
2793
2794#ifdef _WIN32
2795# define EV_LSTAT(p,b) _stati64 (p, b)
2796#else
2797# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 2798#endif
2512 2799
2513void 2800void
2514ev_stat_stat (EV_P_ ev_stat *w) 2801ev_stat_stat (EV_P_ ev_stat *w)
2515{ 2802{
… …
2542 || w->prev.st_atime != w->attr.st_atime 2829 || w->prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 2830 || w->prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 2831 || w->prev.st_ctime != w->attr.st_ctime
2545 ) { 2832 ) {
2546 #if EV_USE_INOTIFY 2833 #if EV_USE_INOTIFY
2834 if (fs_fd >= 0)
2835 {
2547 infy_del (EV_A_ w); 2836 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 2837 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 2838 ev_stat_stat (EV_A_ w); /* avoid race... */
2839 }
2550 #endif 2840 #endif
2551 2841
2552 ev_feed_event (EV_A_ w, EV_STAT); 2842 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 2843 }
2554} 2844}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 2847ev_stat_start (EV_P_ ev_stat *w)
2558{ 2848{
2559 if (expect_false (ev_is_active (w))) 2849 if (expect_false (ev_is_active (w)))
2560 return; 2850 return;
2561 2851
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 2852 ev_stat_stat (EV_A_ w);
2567 2853
2854 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 2855 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 2856
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2857 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572 ev_set_priority (&w->timer, ev_priority (w)); 2858 ev_set_priority (&w->timer, ev_priority (w));
2573 2859
2574#if EV_USE_INOTIFY 2860#if EV_USE_INOTIFY
2575 infy_init (EV_A); 2861 infy_init (EV_A);
2576 2862
2577 if (fs_fd >= 0) 2863 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 2864 infy_add (EV_A_ w);
2579 else 2865 else
2580#endif 2866#endif
2581 ev_timer_start (EV_A_ &w->timer); 2867 ev_timer_again (EV_A_ &w->timer);
2582 2868
2583 ev_start (EV_A_ (W)w, 1); 2869 ev_start (EV_A_ (W)w, 1);
2584 2870
2585 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2586} 2872}
… …
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3042 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 } 3043 }
2758 } 3044 }
2759} 3045}
2760 3046
3047static void
3048embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3049{
3050 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3051
3052 ev_embed_stop (EV_A_ w);
3053
3054 {
3055 struct ev_loop *loop = w->other;
3056
3057 ev_loop_fork (EV_A);
3058 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3059 }
3060
3061 ev_embed_start (EV_A_ w);
3062}
3063
2761#if 0 3064#if 0
2762static void 3065static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3066embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{ 3067{
2765 ev_idle_stop (EV_A_ idle); 3068 ev_idle_stop (EV_A_ idle);
… …
2772 if (expect_false (ev_is_active (w))) 3075 if (expect_false (ev_is_active (w)))
2773 return; 3076 return;
2774 3077
2775 { 3078 {
2776 struct ev_loop *loop = w->other; 3079 struct ev_loop *loop = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3080 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3081 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 } 3082 }
2780 3083
2781 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
2782 3085
… …
2785 3088
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3089 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3090 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3091 ev_prepare_start (EV_A_ &w->prepare);
2789 3092
3093 ev_fork_init (&w->fork, embed_fork_cb);
3094 ev_fork_start (EV_A_ &w->fork);
3095
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3096 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3097
2792 ev_start (EV_A_ (W)w, 1); 3098 ev_start (EV_A_ (W)w, 1);
2793 3099
2794 EV_FREQUENT_CHECK; 3100 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3107 if (expect_false (!ev_is_active (w)))
2802 return; 3108 return;
2803 3109
2804 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2805 3111
2806 ev_io_stop (EV_A_ &w->io); 3112 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3113 ev_prepare_stop (EV_A_ &w->prepare);
2808 3114 ev_fork_stop (EV_A_ &w->fork);
2809 ev_stop (EV_A_ (W)w);
2810 3115
2811 EV_FREQUENT_CHECK; 3116 EV_FREQUENT_CHECK;
2812} 3117}
2813#endif 3118#endif
2814 3119
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3216once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3217{
2913 void (*cb)(int revents, void *arg) = once->cb; 3218 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3219 void *arg = once->arg;
2915 3220
2916 ev_io_stop (EV_A_ &once->io); 3221 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3222 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3223 ev_free (once);
2919 3224
2920 cb (revents, arg); 3225 cb (revents, arg);
2921} 3226}
2922 3227
2923static void 3228static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3229once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3230{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3231 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3232
3233 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3234}
2928 3235
2929static void 3236static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3237once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3238{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3239 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3240
3241 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3242}
2934 3243
2935void 3244void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3245ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3246{
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3268 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3269 ev_timer_start (EV_A_ &once->to);
2961 } 3270 }
2962} 3271}
2963 3272
3273/*****************************************************************************/
3274
3275#if EV_WALK_ENABLE
3276void
3277ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3278{
3279 int i, j;
3280 ev_watcher_list *wl, *wn;
3281
3282 if (types & (EV_IO | EV_EMBED))
3283 for (i = 0; i < anfdmax; ++i)
3284 for (wl = anfds [i].head; wl; )
3285 {
3286 wn = wl->next;
3287
3288#if EV_EMBED_ENABLE
3289 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3290 {
3291 if (types & EV_EMBED)
3292 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3293 }
3294 else
3295#endif
3296#if EV_USE_INOTIFY
3297 if (ev_cb ((ev_io *)wl) == infy_cb)
3298 ;
3299 else
3300#endif
3301 if ((ev_io *)wl != &pipe_w)
3302 if (types & EV_IO)
3303 cb (EV_A_ EV_IO, wl);
3304
3305 wl = wn;
3306 }
3307
3308 if (types & (EV_TIMER | EV_STAT))
3309 for (i = timercnt + HEAP0; i-- > HEAP0; )
3310#if EV_STAT_ENABLE
3311 /*TODO: timer is not always active*/
3312 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3313 {
3314 if (types & EV_STAT)
3315 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3316 }
3317 else
3318#endif
3319 if (types & EV_TIMER)
3320 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3321
3322#if EV_PERIODIC_ENABLE
3323 if (types & EV_PERIODIC)
3324 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3325 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3326#endif
3327
3328#if EV_IDLE_ENABLE
3329 if (types & EV_IDLE)
3330 for (j = NUMPRI; i--; )
3331 for (i = idlecnt [j]; i--; )
3332 cb (EV_A_ EV_IDLE, idles [j][i]);
3333#endif
3334
3335#if EV_FORK_ENABLE
3336 if (types & EV_FORK)
3337 for (i = forkcnt; i--; )
3338 if (ev_cb (forks [i]) != embed_fork_cb)
3339 cb (EV_A_ EV_FORK, forks [i]);
3340#endif
3341
3342#if EV_ASYNC_ENABLE
3343 if (types & EV_ASYNC)
3344 for (i = asynccnt; i--; )
3345 cb (EV_A_ EV_ASYNC, asyncs [i]);
3346#endif
3347
3348 if (types & EV_PREPARE)
3349 for (i = preparecnt; i--; )
3350#if EV_EMBED_ENABLE
3351 if (ev_cb (prepares [i]) != embed_prepare_cb)
3352#endif
3353 cb (EV_A_ EV_PREPARE, prepares [i]);
3354
3355 if (types & EV_CHECK)
3356 for (i = checkcnt; i--; )
3357 cb (EV_A_ EV_CHECK, checks [i]);
3358
3359 if (types & EV_SIGNAL)
3360 for (i = 0; i < signalmax; ++i)
3361 for (wl = signals [i].head; wl; )
3362 {
3363 wn = wl->next;
3364 cb (EV_A_ EV_SIGNAL, wl);
3365 wl = wn;
3366 }
3367
3368 if (types & EV_CHILD)
3369 for (i = EV_PID_HASHSIZE; i--; )
3370 for (wl = childs [i]; wl; )
3371 {
3372 wn = wl->next;
3373 cb (EV_A_ EV_CHILD, wl);
3374 wl = wn;
3375 }
3376/* EV_STAT 0x00001000 /* stat data changed */
3377/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3378}
3379#endif
3380
2964#if EV_MULTIPLICITY 3381#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 3382 #include "ev_wrap.h"
2966#endif 3383#endif
2967 3384
2968#ifdef __cplusplus 3385#ifdef __cplusplus

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