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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.296 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
… …
235# else 266# else
236# define EV_USE_EVENTFD 0 267# define EV_USE_EVENTFD 0
237# endif 268# endif
238#endif 269#endif
239 270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
240#ifndef EV_USE_4HEAP 281#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 282# define EV_USE_4HEAP !EV_MINIMAL
242#endif 283#endif
243 284
244#ifndef EV_HEAP_CACHE_AT 285#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
246#endif 301#endif
247 302
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
249 304
250#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
… …
267# include <sys/select.h> 322# include <sys/select.h>
268# endif 323# endif
269#endif 324#endif
270 325
271#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
272# include <sys/inotify.h> 329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
273#endif 335#endif
274 336
275#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 338# include <winsock.h>
277#endif 339#endif
… …
288# endif 350# endif
289#endif 351#endif
290 352
291/**/ 353/**/
292 354
293/* undefined or zero: no verification done or available */
294/* 1 or higher: ev_loop_verify function available */
295/* 2 or higher: ev_loop_verify is called frequently */
296#define EV_VERIFY 1
297
298#if EV_VERIFY > 1 355#if EV_VERIFY >= 3
299# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300#else 357#else
301# define EV_FREQUENT_CHECK do { } while (0) 358# define EV_FREQUENT_CHECK do { } while (0)
302#endif 359#endif
303 360
… …
334# define inline_speed static noinline 391# define inline_speed static noinline
335#else 392#else
336# define inline_speed static inline 393# define inline_speed static inline
337#endif 394#endif
338 395
339#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
340#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
341 403
342#define EMPTY /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
343#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
344 406
345typedef ev_watcher *W; 407typedef ev_watcher *W;
… …
347typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
348 410
349#define ev_active(w) ((W)(w))->active 411#define ev_active(w) ((W)(w))->active
350#define ev_at(w) ((WT)(w))->at 412#define ev_at(w) ((WT)(w))->at
351 413
352#if EV_USE_MONOTONIC 414#if EV_USE_REALTIME
353/* 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 */
354/* 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
355static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
356#endif 422#endif
357 423
358#ifdef _WIN32 424#ifdef _WIN32
359# include "ev_win32.c" 425# include "ev_win32.c"
… …
368{ 434{
369 syserr_cb = cb; 435 syserr_cb = cb;
370} 436}
371 437
372static void noinline 438static void noinline
373syserr (const char *msg) 439ev_syserr (const char *msg)
374{ 440{
375 if (!msg) 441 if (!msg)
376 msg = "(libev) system error"; 442 msg = "(libev) system error";
377 443
378 if (syserr_cb) 444 if (syserr_cb)
… …
424#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
425#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
426 492
427/*****************************************************************************/ 493/*****************************************************************************/
428 494
495/* file descriptor info structure */
429typedef struct 496typedef struct
430{ 497{
431 WL head; 498 WL head;
432 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 */
433 unsigned char reify; 502 unsigned char unused;
503#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif
434#if EV_SELECT_IS_WINSOCKET 506#if EV_SELECT_IS_WINSOCKET
435 SOCKET handle; 507 SOCKET handle;
436#endif 508#endif
437} ANFD; 509} ANFD;
438 510
511/* stores the pending event set for a given watcher */
439typedef struct 512typedef struct
440{ 513{
441 W w; 514 W w;
442 int events; 515 int events; /* the pending event set for the given watcher */
443} ANPENDING; 516} ANPENDING;
444 517
445#if EV_USE_INOTIFY 518#if EV_USE_INOTIFY
446/* hash table entry per inotify-id */ 519/* hash table entry per inotify-id */
447typedef struct 520typedef struct
… …
450} ANFS; 523} ANFS;
451#endif 524#endif
452 525
453/* Heap Entry */ 526/* Heap Entry */
454#if EV_HEAP_CACHE_AT 527#if EV_HEAP_CACHE_AT
528 /* a heap element */
455 typedef struct { 529 typedef struct {
456 ev_tstamp at; 530 ev_tstamp at;
457 WT w; 531 WT w;
458 } ANHE; 532 } ANHE;
459 533
460 #define ANHE_w(he) (he).w /* access watcher, read-write */ 534 #define ANHE_w(he) (he).w /* access watcher, read-write */
461 #define ANHE_at(he) (he).at /* access cached at, read-only */ 535 #define ANHE_at(he) (he).at /* access cached at, read-only */
462 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 536 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463#else 537#else
538 /* a heap element */
464 typedef WT ANHE; 539 typedef WT ANHE;
465 540
466 #define ANHE_w(he) (he) 541 #define ANHE_w(he) (he)
467 #define ANHE_at(he) (he)->at 542 #define ANHE_at(he) (he)->at
468 #define ANHE_at_cache(he) 543 #define ANHE_at_cache(he)
… …
494 569
495#endif 570#endif
496 571
497/*****************************************************************************/ 572/*****************************************************************************/
498 573
574#ifndef EV_HAVE_EV_TIME
499ev_tstamp 575ev_tstamp
500ev_time (void) 576ev_time (void)
501{ 577{
502#if EV_USE_REALTIME 578#if EV_USE_REALTIME
579 if (expect_true (have_realtime))
580 {
503 struct timespec ts; 581 struct timespec ts;
504 clock_gettime (CLOCK_REALTIME, &ts); 582 clock_gettime (CLOCK_REALTIME, &ts);
505 return ts.tv_sec + ts.tv_nsec * 1e-9; 583 return ts.tv_sec + ts.tv_nsec * 1e-9;
506#else 584 }
585#endif
586
507 struct timeval tv; 587 struct timeval tv;
508 gettimeofday (&tv, 0); 588 gettimeofday (&tv, 0);
509 return tv.tv_sec + tv.tv_usec * 1e-6; 589 return tv.tv_sec + tv.tv_usec * 1e-6;
510#endif
511} 590}
591#endif
512 592
513ev_tstamp inline_size 593inline_size ev_tstamp
514get_clock (void) 594get_clock (void)
515{ 595{
516#if EV_USE_MONOTONIC 596#if EV_USE_MONOTONIC
517 if (expect_true (have_monotonic)) 597 if (expect_true (have_monotonic))
518 { 598 {
… …
551 struct timeval tv; 631 struct timeval tv;
552 632
553 tv.tv_sec = (time_t)delay; 633 tv.tv_sec = (time_t)delay;
554 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555 635
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 */
556 select (0, 0, 0, 0, &tv); 639 select (0, 0, 0, 0, &tv);
557#endif 640#endif
558 } 641 }
559} 642}
560 643
561/*****************************************************************************/ 644/*****************************************************************************/
562 645
563#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 */
564 647
565int 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
566array_nextsize (int elem, int cur, int cnt) 651array_nextsize (int elem, int cur, int cnt)
567{ 652{
568 int ncur = cur + 1; 653 int ncur = cur + 1;
569 654
570 do 655 do
… …
587array_realloc (int elem, void *base, int *cur, int cnt) 672array_realloc (int elem, void *base, int *cur, int cnt)
588{ 673{
589 *cur = array_nextsize (elem, *cur, cnt); 674 *cur = array_nextsize (elem, *cur, cnt);
590 return ev_realloc (base, elem * *cur); 675 return ev_realloc (base, elem * *cur);
591} 676}
677
678#define array_init_zero(base,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count))
592 680
593#define array_needsize(type,base,cur,cnt,init) \ 681#define array_needsize(type,base,cur,cnt,init) \
594 if (expect_false ((cnt) > (cur))) \ 682 if (expect_false ((cnt) > (cur))) \
595 { \ 683 { \
596 int ocur_ = (cur); \ 684 int ocur_ = (cur); \
… …
608 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 696 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609 } 697 }
610#endif 698#endif
611 699
612#define array_free(stem, idx) \ 700#define array_free(stem, idx) \
613 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
614 702
615/*****************************************************************************/ 703/*****************************************************************************/
704
705/* dummy callback for pending events */
706static void noinline
707pendingcb (EV_P_ ev_prepare *w, int revents)
708{
709}
616 710
617void noinline 711void noinline
618ev_feed_event (EV_P_ void *w, int revents) 712ev_feed_event (EV_P_ void *w, int revents)
619{ 713{
620 W w_ = (W)w; 714 W w_ = (W)w;
… …
629 pendings [pri][w_->pending - 1].w = w_; 723 pendings [pri][w_->pending - 1].w = w_;
630 pendings [pri][w_->pending - 1].events = revents; 724 pendings [pri][w_->pending - 1].events = revents;
631 } 725 }
632} 726}
633 727
634void 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
635queue_events (EV_P_ W *events, int eventcnt, int type) 744queue_events (EV_P_ W *events, int eventcnt, int type)
636{ 745{
637 int i; 746 int i;
638 747
639 for (i = 0; i < eventcnt; ++i) 748 for (i = 0; i < eventcnt; ++i)
640 ev_feed_event (EV_A_ events [i], type); 749 ev_feed_event (EV_A_ events [i], type);
641} 750}
642 751
643/*****************************************************************************/ 752/*****************************************************************************/
644 753
645void inline_size 754inline_speed void
646anfds_init (ANFD *base, int count)
647{
648 while (count--)
649 {
650 base->head = 0;
651 base->events = EV_NONE;
652 base->reify = 0;
653
654 ++base;
655 }
656}
657
658void inline_speed
659fd_event (EV_P_ int fd, int revents) 755fd_event (EV_P_ int fd, int revents)
660{ 756{
661 ANFD *anfd = anfds + fd; 757 ANFD *anfd = anfds + fd;
662 ev_io *w; 758 ev_io *w;
663 759
… …
675{ 771{
676 if (fd >= 0 && fd < anfdmax) 772 if (fd >= 0 && fd < anfdmax)
677 fd_event (EV_A_ fd, revents); 773 fd_event (EV_A_ fd, revents);
678} 774}
679 775
680void inline_size 776/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */
778inline_size void
681fd_reify (EV_P) 779fd_reify (EV_P)
682{ 780{
683 int i; 781 int i;
684 782
685 for (i = 0; i < fdchangecnt; ++i) 783 for (i = 0; i < fdchangecnt; ++i)
… …
694 events |= (unsigned char)w->events; 792 events |= (unsigned char)w->events;
695 793
696#if EV_SELECT_IS_WINSOCKET 794#if EV_SELECT_IS_WINSOCKET
697 if (events) 795 if (events)
698 { 796 {
699 unsigned long argp; 797 unsigned long arg;
700 #ifdef EV_FD_TO_WIN32_HANDLE 798 #ifdef EV_FD_TO_WIN32_HANDLE
701 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702 #else 800 #else
703 anfd->handle = _get_osfhandle (fd); 801 anfd->handle = _get_osfhandle (fd);
704 #endif 802 #endif
705 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));
706 } 804 }
707#endif 805#endif
708 806
709 { 807 {
710 unsigned char o_events = anfd->events; 808 unsigned char o_events = anfd->events;
711 unsigned char o_reify = anfd->reify; 809 unsigned char o_reify = anfd->reify;
712 810
713 anfd->reify = 0; 811 anfd->reify = 0;
714 anfd->events = events; 812 anfd->events = events;
715 813
716 if (o_events != events || o_reify & EV_IOFDSET) 814 if (o_events != events || o_reify & EV__IOFDSET)
717 backend_modify (EV_A_ fd, o_events, events); 815 backend_modify (EV_A_ fd, o_events, events);
718 } 816 }
719 } 817 }
720 818
721 fdchangecnt = 0; 819 fdchangecnt = 0;
722} 820}
723 821
724void inline_size 822/* something about the given fd changed */
823inline_size void
725fd_change (EV_P_ int fd, int flags) 824fd_change (EV_P_ int fd, int flags)
726{ 825{
727 unsigned char reify = anfds [fd].reify; 826 unsigned char reify = anfds [fd].reify;
728 anfds [fd].reify |= flags; 827 anfds [fd].reify |= flags;
729 828
… …
733 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734 fdchanges [fdchangecnt - 1] = fd; 833 fdchanges [fdchangecnt - 1] = fd;
735 } 834 }
736} 835}
737 836
738void inline_speed 837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void
739fd_kill (EV_P_ int fd) 839fd_kill (EV_P_ int fd)
740{ 840{
741 ev_io *w; 841 ev_io *w;
742 842
743 while ((w = (ev_io *)anfds [fd].head)) 843 while ((w = (ev_io *)anfds [fd].head))
… …
745 ev_io_stop (EV_A_ w); 845 ev_io_stop (EV_A_ w);
746 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);
747 } 847 }
748} 848}
749 849
750int inline_size 850/* check whether the given fd is atcually valid, for error recovery */
851inline_size int
751fd_valid (int fd) 852fd_valid (int fd)
752{ 853{
753#ifdef _WIN32 854#ifdef _WIN32
754 return _get_osfhandle (fd) != -1; 855 return _get_osfhandle (fd) != -1;
755#else 856#else
… …
763{ 864{
764 int fd; 865 int fd;
765 866
766 for (fd = 0; fd < anfdmax; ++fd) 867 for (fd = 0; fd < anfdmax; ++fd)
767 if (anfds [fd].events) 868 if (anfds [fd].events)
768 if (!fd_valid (fd) == -1 && errno == EBADF) 869 if (!fd_valid (fd) && errno == EBADF)
769 fd_kill (EV_A_ fd); 870 fd_kill (EV_A_ fd);
770} 871}
771 872
772/* 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 */
773static void noinline 874static void noinline
… …
791 892
792 for (fd = 0; fd < anfdmax; ++fd) 893 for (fd = 0; fd < anfdmax; ++fd)
793 if (anfds [fd].events) 894 if (anfds [fd].events)
794 { 895 {
795 anfds [fd].events = 0; 896 anfds [fd].events = 0;
897 anfds [fd].emask = 0;
796 fd_change (EV_A_ fd, EV_IOFDSET | 1); 898 fd_change (EV_A_ fd, EV__IOFDSET | 1);
797 } 899 }
798} 900}
799 901
800/*****************************************************************************/ 902/*****************************************************************************/
801 903
… …
817#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 919#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 920#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819#define UPHEAP_DONE(p,k) ((p) == (k)) 921#define UPHEAP_DONE(p,k) ((p) == (k))
820 922
821/* away from the root */ 923/* away from the root */
822void inline_speed 924inline_speed void
823downheap (ANHE *heap, int N, int k) 925downheap (ANHE *heap, int N, int k)
824{ 926{
825 ANHE he = heap [k]; 927 ANHE he = heap [k];
826 ANHE *E = heap + N + HEAP0; 928 ANHE *E = heap + N + HEAP0;
827 929
… …
867#define HEAP0 1 969#define HEAP0 1
868#define HPARENT(k) ((k) >> 1) 970#define HPARENT(k) ((k) >> 1)
869#define UPHEAP_DONE(p,k) (!(p)) 971#define UPHEAP_DONE(p,k) (!(p))
870 972
871/* away from the root */ 973/* away from the root */
872void inline_speed 974inline_speed void
873downheap (ANHE *heap, int N, int k) 975downheap (ANHE *heap, int N, int k)
874{ 976{
875 ANHE he = heap [k]; 977 ANHE he = heap [k];
876 978
877 for (;;) 979 for (;;)
… …
897 ev_active (ANHE_w (he)) = k; 999 ev_active (ANHE_w (he)) = k;
898} 1000}
899#endif 1001#endif
900 1002
901/* towards the root */ 1003/* towards the root */
902void inline_speed 1004inline_speed void
903upheap (ANHE *heap, int k) 1005upheap (ANHE *heap, int k)
904{ 1006{
905 ANHE he = heap [k]; 1007 ANHE he = heap [k];
906 1008
907 for (;;) 1009 for (;;)
… …
918 1020
919 heap [k] = he; 1021 heap [k] = he;
920 ev_active (ANHE_w (he)) = k; 1022 ev_active (ANHE_w (he)) = k;
921} 1023}
922 1024
923void inline_size 1025/* move an element suitably so it is in a correct place */
1026inline_size void
924adjustheap (ANHE *heap, int N, int k) 1027adjustheap (ANHE *heap, int N, int k)
925{ 1028{
926 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]))
927 upheap (heap, k); 1030 upheap (heap, k);
928 else 1031 else
929 downheap (heap, N, k); 1032 downheap (heap, N, k);
930} 1033}
931 1034
932/* 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 */
933void inline_size 1036inline_size void
934reheap (ANHE *heap, int N) 1037reheap (ANHE *heap, int N)
935{ 1038{
936 int i; 1039 int i;
1040
937 /* 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 */
938 /* 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 */
939 for (i = 0; i < N; ++i) 1043 for (i = 0; i < N; ++i)
940 upheap (heap, i + HEAP0); 1044 upheap (heap, i + HEAP0);
941} 1045}
942 1046
943#if EV_VERIFY
944static void
945checkheap (ANHE *heap, int N)
946{
947 int i;
948
949 for (i = HEAP0; i < N + HEAP0; ++i)
950 {
951 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954 }
955}
956#endif
957
958/*****************************************************************************/ 1047/*****************************************************************************/
959 1048
1049/* associate signal watchers to a signal signal */
960typedef struct 1050typedef struct
961{ 1051{
962 WL head; 1052 WL head;
963 EV_ATOMIC_T gotsig; 1053 EV_ATOMIC_T gotsig;
964} ANSIG; 1054} ANSIG;
… …
966static ANSIG *signals; 1056static ANSIG *signals;
967static int signalmax; 1057static int signalmax;
968 1058
969static EV_ATOMIC_T gotsig; 1059static EV_ATOMIC_T gotsig;
970 1060
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982
983/*****************************************************************************/ 1061/*****************************************************************************/
984 1062
985void inline_speed 1063/* used to prepare libev internal fd's */
1064/* this is not fork-safe */
1065inline_speed void
986fd_intern (int fd) 1066fd_intern (int fd)
987{ 1067{
988#ifdef _WIN32 1068#ifdef _WIN32
989 int arg = 1; 1069 unsigned long arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991#else 1071#else
992 fcntl (fd, F_SETFD, FD_CLOEXEC); 1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
993 fcntl (fd, F_SETFL, O_NONBLOCK); 1073 fcntl (fd, F_SETFL, O_NONBLOCK);
994#endif 1074#endif
995} 1075}
996 1076
997static void noinline 1077static void noinline
998evpipe_init (EV_P) 1078evpipe_init (EV_P)
999{ 1079{
1000 if (!ev_is_active (&pipeev)) 1080 if (!ev_is_active (&pipe_w))
1001 { 1081 {
1002#if EV_USE_EVENTFD 1082#if EV_USE_EVENTFD
1003 if ((evfd = eventfd (0, 0)) >= 0) 1083 if ((evfd = eventfd (0, 0)) >= 0)
1004 { 1084 {
1005 evpipe [0] = -1; 1085 evpipe [0] = -1;
1006 fd_intern (evfd); 1086 fd_intern (evfd);
1007 ev_io_set (&pipeev, evfd, EV_READ); 1087 ev_io_set (&pipe_w, evfd, EV_READ);
1008 } 1088 }
1009 else 1089 else
1010#endif 1090#endif
1011 { 1091 {
1012 while (pipe (evpipe)) 1092 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1093 ev_syserr ("(libev) error creating signal/async pipe");
1014 1094
1015 fd_intern (evpipe [0]); 1095 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1096 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1097 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018 } 1098 }
1019 1099
1020 ev_io_start (EV_A_ &pipeev); 1100 ev_io_start (EV_A_ &pipe_w);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1102 }
1023} 1103}
1024 1104
1025void inline_size 1105inline_size void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1107{
1028 if (!*flag) 1108 if (!*flag)
1029 { 1109 {
1030 int old_errno = errno; /* save errno because write might clobber it */ 1110 int old_errno = errno; /* save errno because write might clobber it */
… …
1043 1123
1044 errno = old_errno; 1124 errno = old_errno;
1045 } 1125 }
1046} 1126}
1047 1127
1128/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */
1048static void 1130static void
1049pipecb (EV_P_ ev_io *iow, int revents) 1131pipecb (EV_P_ ev_io *iow, int revents)
1050{ 1132{
1051#if EV_USE_EVENTFD 1133#if EV_USE_EVENTFD
1052 if (evfd >= 0) 1134 if (evfd >= 0)
… …
1108ev_feed_signal_event (EV_P_ int signum) 1190ev_feed_signal_event (EV_P_ int signum)
1109{ 1191{
1110 WL w; 1192 WL w;
1111 1193
1112#if EV_MULTIPLICITY 1194#if EV_MULTIPLICITY
1113 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));
1114#endif 1196#endif
1115 1197
1116 --signum; 1198 --signum;
1117 1199
1118 if (signum < 0 || signum >= signalmax) 1200 if (signum < 0 || signum >= signalmax)
… …
1134 1216
1135#ifndef WIFCONTINUED 1217#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1218# define WIFCONTINUED(status) 0
1137#endif 1219#endif
1138 1220
1139void inline_speed 1221/* handle a single child status event */
1222inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1223child_reap (EV_P_ int chain, int pid, int status)
1141{ 1224{
1142 ev_child *w; 1225 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1227
… …
1157 1240
1158#ifndef WCONTINUED 1241#ifndef WCONTINUED
1159# define WCONTINUED 0 1242# define WCONTINUED 0
1160#endif 1243#endif
1161 1244
1245/* called on sigchld etc., calls waitpid */
1162static void 1246static void
1163childcb (EV_P_ ev_signal *sw, int revents) 1247childcb (EV_P_ ev_signal *sw, int revents)
1164{ 1248{
1165 int pid, status; 1249 int pid, status;
1166 1250
… …
1247 /* kqueue is borked on everything but netbsd apparently */ 1331 /* kqueue is borked on everything but netbsd apparently */
1248 /* 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 */
1249 flags &= ~EVBACKEND_KQUEUE; 1333 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1334#endif
1251#ifdef __APPLE__ 1335#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1336 /* only select works correctly on that "unix-certified" platform */
1253 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 */
1254#endif 1339#endif
1255 1340
1256 return flags; 1341 return flags;
1257} 1342}
1258 1343
… …
1278ev_loop_count (EV_P) 1363ev_loop_count (EV_P)
1279{ 1364{
1280 return loop_count; 1365 return loop_count;
1281} 1366}
1282 1367
1368unsigned int
1369ev_loop_depth (EV_P)
1370{
1371 return loop_depth;
1372}
1373
1283void 1374void
1284ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1376{
1286 io_blocktime = interval; 1377 io_blocktime = interval;
1287} 1378}
… …
1290ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1382{
1292 timeout_blocktime = interval; 1383 timeout_blocktime = interval;
1293} 1384}
1294 1385
1386/* initialise a loop structure, must be zero-initialised */
1295static void noinline 1387static void noinline
1296loop_init (EV_P_ unsigned int flags) 1388loop_init (EV_P_ unsigned int flags)
1297{ 1389{
1298 if (!backend) 1390 if (!backend)
1299 { 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
1300#if EV_USE_MONOTONIC 1402#if EV_USE_MONOTONIC
1403 if (!have_monotonic)
1301 { 1404 {
1302 struct timespec ts; 1405 struct timespec ts;
1406
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1408 have_monotonic = 1;
1305 } 1409 }
1306#endif 1410#endif
1307 1411
1308 ev_rt_now = ev_time (); 1412 ev_rt_now = ev_time ();
1309 mn_now = get_clock (); 1413 mn_now = get_clock ();
1310 now_floor = mn_now; 1414 now_floor = mn_now;
1311 rtmn_diff = ev_rt_now - mn_now; 1415 rtmn_diff = ev_rt_now - mn_now;
1416 invoke_cb = ev_invoke_pending;
1312 1417
1313 io_blocktime = 0.; 1418 io_blocktime = 0.;
1314 timeout_blocktime = 0.; 1419 timeout_blocktime = 0.;
1315 backend = 0; 1420 backend = 0;
1316 backend_fd = -1; 1421 backend_fd = -1;
… …
1347#endif 1452#endif
1348#if EV_USE_SELECT 1453#if EV_USE_SELECT
1349 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1454 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350#endif 1455#endif
1351 1456
1457 ev_prepare_init (&pending_w, pendingcb);
1458
1352 ev_init (&pipeev, pipecb); 1459 ev_init (&pipe_w, pipecb);
1353 ev_set_priority (&pipeev, EV_MAXPRI); 1460 ev_set_priority (&pipe_w, EV_MAXPRI);
1354 } 1461 }
1355} 1462}
1356 1463
1464/* free up a loop structure */
1357static void noinline 1465static void noinline
1358loop_destroy (EV_P) 1466loop_destroy (EV_P)
1359{ 1467{
1360 int i; 1468 int i;
1361 1469
1362 if (ev_is_active (&pipeev)) 1470 if (ev_is_active (&pipe_w))
1363 { 1471 {
1364 ev_ref (EV_A); /* signal watcher */ 1472 ev_ref (EV_A); /* signal watcher */
1365 ev_io_stop (EV_A_ &pipeev); 1473 ev_io_stop (EV_A_ &pipe_w);
1366 1474
1367#if EV_USE_EVENTFD 1475#if EV_USE_EVENTFD
1368 if (evfd >= 0) 1476 if (evfd >= 0)
1369 close (evfd); 1477 close (evfd);
1370#endif 1478#endif
… …
1409 } 1517 }
1410 1518
1411 ev_free (anfds); anfdmax = 0; 1519 ev_free (anfds); anfdmax = 0;
1412 1520
1413 /* 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);
1414 array_free (fdchange, EMPTY); 1523 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1524 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1525#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1526 array_free (periodic, EMPTY);
1418#endif 1527#endif
… …
1427 1536
1428 backend = 0; 1537 backend = 0;
1429} 1538}
1430 1539
1431#if EV_USE_INOTIFY 1540#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 1541inline_size void infy_fork (EV_P);
1433#endif 1542#endif
1434 1543
1435void inline_size 1544inline_size void
1436loop_fork (EV_P) 1545loop_fork (EV_P)
1437{ 1546{
1438#if EV_USE_PORT 1547#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1548 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 1549#endif
… …
1446#endif 1555#endif
1447#if EV_USE_INOTIFY 1556#if EV_USE_INOTIFY
1448 infy_fork (EV_A); 1557 infy_fork (EV_A);
1449#endif 1558#endif
1450 1559
1451 if (ev_is_active (&pipeev)) 1560 if (ev_is_active (&pipe_w))
1452 { 1561 {
1453 /* this "locks" the handlers against writing to the pipe */ 1562 /* this "locks" the handlers against writing to the pipe */
1454 /* while we modify the fd vars */ 1563 /* while we modify the fd vars */
1455 gotsig = 1; 1564 gotsig = 1;
1456#if EV_ASYNC_ENABLE 1565#if EV_ASYNC_ENABLE
1457 gotasync = 1; 1566 gotasync = 1;
1458#endif 1567#endif
1459 1568
1460 ev_ref (EV_A); 1569 ev_ref (EV_A);
1461 ev_io_stop (EV_A_ &pipeev); 1570 ev_io_stop (EV_A_ &pipe_w);
1462 1571
1463#if EV_USE_EVENTFD 1572#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1573 if (evfd >= 0)
1465 close (evfd); 1574 close (evfd);
1466#endif 1575#endif
… …
1471 close (evpipe [1]); 1580 close (evpipe [1]);
1472 } 1581 }
1473 1582
1474 evpipe_init (EV_A); 1583 evpipe_init (EV_A);
1475 /* now iterate over everything, in case we missed something */ 1584 /* now iterate over everything, in case we missed something */
1476 pipecb (EV_A_ &pipeev, EV_READ); 1585 pipecb (EV_A_ &pipe_w, EV_READ);
1477 } 1586 }
1478 1587
1479 postfork = 0; 1588 postfork = 0;
1480} 1589}
1481 1590
1482#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
1592
1483struct ev_loop * 1593struct ev_loop *
1484ev_loop_new (unsigned int flags) 1594ev_loop_new (unsigned int flags)
1485{ 1595{
1486 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));
1487 1597
… …
1507{ 1617{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1618 postfork = 1; /* must be in line with ev_default_fork */
1509} 1619}
1510 1620
1511#if EV_VERIFY 1621#if EV_VERIFY
1512static 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
1513array_check (W **ws, int cnt) 1647array_verify (EV_P_ W *ws, int cnt)
1514{ 1648{
1515 while (cnt--) 1649 while (cnt--)
1650 {
1516 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 }
1517} 1654}
1655#endif
1518 1656
1519static void 1657void
1520ev_loop_verify (EV_P) 1658ev_loop_verify (EV_P)
1521{ 1659{
1660#if EV_VERIFY
1522 int i; 1661 int i;
1662 WL w;
1523 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);
1524 checkheap (timers, timercnt); 1680 verify_heap (EV_A_ timers, timercnt);
1681
1525#if EV_PERIODIC_ENABLE 1682#if EV_PERIODIC_ENABLE
1683 assert (periodicmax >= periodiccnt);
1526 checkheap (periodics, periodiccnt); 1684 verify_heap (EV_A_ periodics, periodiccnt);
1527#endif 1685#endif
1528 1686
1687 for (i = NUMPRI; i--; )
1688 {
1689 assert (pendingmax [i] >= pendingcnt [i]);
1529#if EV_IDLE_ENABLE 1690#if EV_IDLE_ENABLE
1530 for (i = NUMPRI; i--; ) 1691 assert (idleall >= 0);
1692 assert (idlemax [i] >= idlecnt [i]);
1531 array_check ((W **)idles [i], idlecnt [i]); 1693 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532#endif 1694#endif
1695 }
1696
1533#if EV_FORK_ENABLE 1697#if EV_FORK_ENABLE
1698 assert (forkmax >= forkcnt);
1534 array_check ((W **)forks, forkcnt); 1699 array_verify (EV_A_ (W *)forks, forkcnt);
1535#endif 1700#endif
1536 array_check ((W **)prepares, preparecnt); 1701
1537 array_check ((W **)checks, checkcnt);
1538#if EV_ASYNC_ENABLE 1702#if EV_ASYNC_ENABLE
1703 assert (asyncmax >= asynccnt);
1539 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)
1540#endif 1716# endif
1541}
1542#endif 1717#endif
1718}
1543 1719
1544#endif 1720#endif /* multiplicity */
1545 1721
1546#if EV_MULTIPLICITY 1722#if EV_MULTIPLICITY
1547struct ev_loop * 1723struct ev_loop *
1548ev_default_loop_init (unsigned int flags) 1724ev_default_loop_init (unsigned int flags)
1549#else 1725#else
… …
1582{ 1758{
1583#if EV_MULTIPLICITY 1759#if EV_MULTIPLICITY
1584 struct ev_loop *loop = ev_default_loop_ptr; 1760 struct ev_loop *loop = ev_default_loop_ptr;
1585#endif 1761#endif
1586 1762
1763 ev_default_loop_ptr = 0;
1764
1587#ifndef _WIN32 1765#ifndef _WIN32
1588 ev_ref (EV_A); /* child watcher */ 1766 ev_ref (EV_A); /* child watcher */
1589 ev_signal_stop (EV_A_ &childev); 1767 ev_signal_stop (EV_A_ &childev);
1590#endif 1768#endif
1591 1769
… …
1597{ 1775{
1598#if EV_MULTIPLICITY 1776#if EV_MULTIPLICITY
1599 struct ev_loop *loop = ev_default_loop_ptr; 1777 struct ev_loop *loop = ev_default_loop_ptr;
1600#endif 1778#endif
1601 1779
1602 if (backend)
1603 postfork = 1; /* must be in line with ev_loop_fork */ 1780 postfork = 1; /* must be in line with ev_loop_fork */
1604} 1781}
1605 1782
1606/*****************************************************************************/ 1783/*****************************************************************************/
1607 1784
1608void 1785void
1609ev_invoke (EV_P_ void *w, int revents) 1786ev_invoke (EV_P_ void *w, int revents)
1610{ 1787{
1611 EV_CB_INVOKE ((W)w, revents); 1788 EV_CB_INVOKE ((W)w, revents);
1612} 1789}
1613 1790
1614void inline_speed 1791void
1615call_pending (EV_P) 1792ev_invoke_pending (EV_P)
1616{ 1793{
1617 int pri; 1794 int pri;
1618
1619 EV_FREQUENT_CHECK;
1620 1795
1621 for (pri = NUMPRI; pri--; ) 1796 for (pri = NUMPRI; pri--; )
1622 while (pendingcnt [pri]) 1797 while (pendingcnt [pri])
1623 { 1798 {
1624 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1799 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625 1800
1626 if (expect_true (p->w))
1627 {
1628 /*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 */
1629 1803
1630 p->w->pending = 0; 1804 p->w->pending = 0;
1631 EV_CB_INVOKE (p->w, p->events); 1805 EV_CB_INVOKE (p->w, p->events);
1632 } 1806 EV_FREQUENT_CHECK;
1633 } 1807 }
1634
1635 EV_FREQUENT_CHECK;
1636} 1808}
1637 1809
1638#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1639void inline_size 1811/* make idle watchers pending. this handles the "call-idle */
1812/* only when higher priorities are idle" logic */
1813inline_size void
1640idle_reify (EV_P) 1814idle_reify (EV_P)
1641{ 1815{
1642 if (expect_false (idleall)) 1816 if (expect_false (idleall))
1643 { 1817 {
1644 int pri; 1818 int pri;
… …
1656 } 1830 }
1657 } 1831 }
1658} 1832}
1659#endif 1833#endif
1660 1834
1661void inline_size 1835/* make timers pending */
1836inline_size void
1662timers_reify (EV_P) 1837timers_reify (EV_P)
1663{ 1838{
1664 EV_FREQUENT_CHECK; 1839 EV_FREQUENT_CHECK;
1665 1840
1666 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1841 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667 { 1842 {
1668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1843 do
1669
1670 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672 /* first reschedule or stop timer */
1673 if (w->repeat)
1674 { 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 {
1675 ev_at (w) += w->repeat; 1852 ev_at (w) += w->repeat;
1676 if (ev_at (w) < mn_now) 1853 if (ev_at (w) < mn_now)
1677 ev_at (w) = mn_now; 1854 ev_at (w) = mn_now;
1678 1855
1679 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.));
1680 1857
1681 ANHE_at_cache (timers [HEAP0]); 1858 ANHE_at_cache (timers [HEAP0]);
1682 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);
1683 } 1866 }
1684 else 1867 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686 1868
1687 EV_FREQUENT_CHECK;
1688 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1869 feed_reverse_done (EV_A_ EV_TIMEOUT);
1689 } 1870 }
1690} 1871}
1691 1872
1692#if EV_PERIODIC_ENABLE 1873#if EV_PERIODIC_ENABLE
1693void inline_size 1874/* make periodics pending */
1875inline_size void
1694periodics_reify (EV_P) 1876periodics_reify (EV_P)
1695{ 1877{
1696 EV_FREQUENT_CHECK; 1878 EV_FREQUENT_CHECK;
1879
1697 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1880 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698 { 1881 {
1699 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1882 int feed_count = 0;
1700 1883
1701 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1884 do
1702
1703 /* first reschedule or stop timer */
1704 if (w->reschedule_cb)
1705 { 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 {
1706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1893 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 1894
1708 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));
1709 1896
1710 ANHE_at_cache (periodics [HEAP0]); 1897 ANHE_at_cache (periodics [HEAP0]);
1711 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
1712 EV_FREQUENT_CHECK; 1922 EV_FREQUENT_CHECK;
1923 feed_reverse (EV_A_ (W)w);
1713 } 1924 }
1714 else if (w->interval) 1925 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715 {
1716 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717 /* if next trigger time is not sufficiently in the future, put it there */
1718 /* this might happen because of floating point inexactness */
1719 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720 {
1721 ev_at (w) += w->interval;
1722 1926
1723 /* if interval is unreasonably low we might still have a time in the past */
1724 /* so correct this. this will make the periodic very inexact, but the user */
1725 /* has effectively asked to get triggered more often than possible */
1726 if (ev_at (w) < ev_rt_now)
1727 ev_at (w) = ev_rt_now;
1728 }
1729
1730 ANHE_at_cache (periodics [HEAP0]);
1731 downheap (periodics, periodiccnt, HEAP0);
1732 }
1733 else
1734 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736 EV_FREQUENT_CHECK;
1737 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1927 feed_reverse_done (EV_A_ EV_PERIODIC);
1738 } 1928 }
1739} 1929}
1740 1930
1931/* simply recalculate all periodics */
1932/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741static void noinline 1933static void noinline
1742periodics_reschedule (EV_P) 1934periodics_reschedule (EV_P)
1743{ 1935{
1744 int i; 1936 int i;
1745 1937
… …
1758 1950
1759 reheap (periodics, periodiccnt); 1951 reheap (periodics, periodiccnt);
1760} 1952}
1761#endif 1953#endif
1762 1954
1763void 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
1764time_update (EV_P_ ev_tstamp max_block) 1972time_update (EV_P_ ev_tstamp max_block)
1765{ 1973{
1766 int i;
1767
1768#if EV_USE_MONOTONIC 1974#if EV_USE_MONOTONIC
1769 if (expect_true (have_monotonic)) 1975 if (expect_true (have_monotonic))
1770 { 1976 {
1977 int i;
1771 ev_tstamp odiff = rtmn_diff; 1978 ev_tstamp odiff = rtmn_diff;
1772 1979
1773 mn_now = get_clock (); 1980 mn_now = get_clock ();
1774 1981
1775 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1982 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1801 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1802 mn_now = get_clock (); 2009 mn_now = get_clock ();
1803 now_floor = mn_now; 2010 now_floor = mn_now;
1804 } 2011 }
1805 2012
2013 /* no timer adjustment, as the monotonic clock doesn't jump */
2014 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806# if EV_PERIODIC_ENABLE 2015# if EV_PERIODIC_ENABLE
1807 periodics_reschedule (EV_A); 2016 periodics_reschedule (EV_A);
1808# endif 2017# endif
1809 /* no timer adjustment, as the monotonic clock doesn't jump */
1810 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811 } 2018 }
1812 else 2019 else
1813#endif 2020#endif
1814 { 2021 {
1815 ev_rt_now = ev_time (); 2022 ev_rt_now = ev_time ();
1816 2023
1817 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))
1818 { 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);
1819#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1820 periodics_reschedule (EV_A); 2029 periodics_reschedule (EV_A);
1821#endif 2030#endif
1822 /* adjust timers. this is easy, as the offset is the same for all of them */
1823 for (i = 0; i < timercnt; ++i)
1824 {
1825 ANHE *he = timers + i + HEAP0;
1826 ANHE_w (*he)->at += ev_rt_now - mn_now;
1827 ANHE_at_cache (*he);
1828 }
1829 } 2031 }
1830 2032
1831 mn_now = ev_rt_now; 2033 mn_now = ev_rt_now;
1832 } 2034 }
1833} 2035}
1834 2036
1835void 2037void
1836ev_ref (EV_P)
1837{
1838 ++activecnt;
1839}
1840
1841void
1842ev_unref (EV_P)
1843{
1844 --activecnt;
1845}
1846
1847static int loop_done;
1848
1849void
1850ev_loop (EV_P_ int flags) 2038ev_loop (EV_P_ int flags)
1851{ 2039{
2040 ++loop_depth;
2041
1852 loop_done = EVUNLOOP_CANCEL; 2042 loop_done = EVUNLOOP_CANCEL;
1853 2043
1854 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 */
1855 2045
1856 do 2046 do
1857 { 2047 {
2048#if EV_VERIFY >= 2
2049 ev_loop_verify (EV_A);
2050#endif
2051
1858#ifndef _WIN32 2052#ifndef _WIN32
1859 if (expect_false (curpid)) /* penalise the forking check even more */ 2053 if (expect_false (curpid)) /* penalise the forking check even more */
1860 if (expect_false (getpid () != curpid)) 2054 if (expect_false (getpid () != curpid))
1861 { 2055 {
1862 curpid = getpid (); 2056 curpid = getpid ();
… …
1868 /* we might have forked, so queue fork handlers */ 2062 /* we might have forked, so queue fork handlers */
1869 if (expect_false (postfork)) 2063 if (expect_false (postfork))
1870 if (forkcnt) 2064 if (forkcnt)
1871 { 2065 {
1872 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2066 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1873 call_pending (EV_A); 2067 invoke_cb (EV_A);
1874 } 2068 }
1875#endif 2069#endif
1876 2070
1877 /* queue prepare watchers (and execute them) */ 2071 /* queue prepare watchers (and execute them) */
1878 if (expect_false (preparecnt)) 2072 if (expect_false (preparecnt))
1879 { 2073 {
1880 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2074 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881 call_pending (EV_A); 2075 invoke_cb (EV_A);
1882 } 2076 }
1883
1884 if (expect_false (!activecnt))
1885 break;
1886 2077
1887 /* we might have forked, so reify kernel state if necessary */ 2078 /* we might have forked, so reify kernel state if necessary */
1888 if (expect_false (postfork)) 2079 if (expect_false (postfork))
1889 loop_fork (EV_A); 2080 loop_fork (EV_A);
1890 2081
… …
1896 ev_tstamp waittime = 0.; 2087 ev_tstamp waittime = 0.;
1897 ev_tstamp sleeptime = 0.; 2088 ev_tstamp sleeptime = 0.;
1898 2089
1899 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2090 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1900 { 2091 {
2092 /* remember old timestamp for io_blocktime calculation */
2093 ev_tstamp prev_mn_now = mn_now;
2094
1901 /* update time to cancel out callback processing overhead */ 2095 /* update time to cancel out callback processing overhead */
1902 time_update (EV_A_ 1e100); 2096 time_update (EV_A_ 1e100);
1903 2097
1904 waittime = MAX_BLOCKTIME; 2098 waittime = MAX_BLOCKTIME;
1905 2099
… …
1915 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;
1916 if (waittime > to) waittime = to; 2110 if (waittime > to) waittime = to;
1917 } 2111 }
1918#endif 2112#endif
1919 2113
2114 /* don't let timeouts decrease the waittime below timeout_blocktime */
1920 if (expect_false (waittime < timeout_blocktime)) 2115 if (expect_false (waittime < timeout_blocktime))
1921 waittime = timeout_blocktime; 2116 waittime = timeout_blocktime;
1922 2117
1923 sleeptime = waittime - backend_fudge; 2118 /* extra check because io_blocktime is commonly 0 */
1924
1925 if (expect_true (sleeptime > io_blocktime)) 2119 if (expect_false (io_blocktime))
1926 sleeptime = io_blocktime;
1927
1928 if (sleeptime)
1929 { 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 {
1930 ev_sleep (sleeptime); 2128 ev_sleep (sleeptime);
1931 waittime -= sleeptime; 2129 waittime -= sleeptime;
2130 }
1932 } 2131 }
1933 } 2132 }
1934 2133
1935 ++loop_count; 2134 ++loop_count;
1936 backend_poll (EV_A_ waittime); 2135 backend_poll (EV_A_ waittime);
… …
1952 2151
1953 /* queue check watchers, to be executed first */ 2152 /* queue check watchers, to be executed first */
1954 if (expect_false (checkcnt)) 2153 if (expect_false (checkcnt))
1955 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1956 2155
1957 call_pending (EV_A); 2156 invoke_cb (EV_A);
1958 } 2157 }
1959 while (expect_true ( 2158 while (expect_true (
1960 activecnt 2159 activecnt
1961 && !loop_done 2160 && !loop_done
1962 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2161 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1963 )); 2162 ));
1964 2163
1965 if (loop_done == EVUNLOOP_ONE) 2164 if (loop_done == EVUNLOOP_ONE)
1966 loop_done = EVUNLOOP_CANCEL; 2165 loop_done = EVUNLOOP_CANCEL;
2166
2167 --loop_depth;
1967} 2168}
1968 2169
1969void 2170void
1970ev_unloop (EV_P_ int how) 2171ev_unloop (EV_P_ int how)
1971{ 2172{
1972 loop_done = how; 2173 loop_done = how;
1973} 2174}
1974 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
1975/*****************************************************************************/ 2213/*****************************************************************************/
2214/* singly-linked list management, used when the expected list length is short */
1976 2215
1977void inline_size 2216inline_size void
1978wlist_add (WL *head, WL elem) 2217wlist_add (WL *head, WL elem)
1979{ 2218{
1980 elem->next = *head; 2219 elem->next = *head;
1981 *head = elem; 2220 *head = elem;
1982} 2221}
1983 2222
1984void inline_size 2223inline_size void
1985wlist_del (WL *head, WL elem) 2224wlist_del (WL *head, WL elem)
1986{ 2225{
1987 while (*head) 2226 while (*head)
1988 { 2227 {
1989 if (*head == elem) 2228 if (*head == elem)
… …
1994 2233
1995 head = &(*head)->next; 2234 head = &(*head)->next;
1996 } 2235 }
1997} 2236}
1998 2237
1999void inline_speed 2238/* internal, faster, version of ev_clear_pending */
2239inline_speed void
2000clear_pending (EV_P_ W w) 2240clear_pending (EV_P_ W w)
2001{ 2241{
2002 if (w->pending) 2242 if (w->pending)
2003 { 2243 {
2004 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2244 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005 w->pending = 0; 2245 w->pending = 0;
2006 } 2246 }
2007} 2247}
2008 2248
2009int 2249int
… …
2013 int pending = w_->pending; 2253 int pending = w_->pending;
2014 2254
2015 if (expect_true (pending)) 2255 if (expect_true (pending))
2016 { 2256 {
2017 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2257 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2258 p->w = (W)&pending_w;
2018 w_->pending = 0; 2259 w_->pending = 0;
2019 p->w = 0;
2020 return p->events; 2260 return p->events;
2021 } 2261 }
2022 else 2262 else
2023 return 0; 2263 return 0;
2024} 2264}
2025 2265
2026void inline_size 2266inline_size void
2027pri_adjust (EV_P_ W w) 2267pri_adjust (EV_P_ W w)
2028{ 2268{
2029 int pri = w->priority; 2269 int pri = ev_priority (w);
2030 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2270 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2271 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032 w->priority = pri; 2272 ev_set_priority (w, pri);
2033} 2273}
2034 2274
2035void inline_speed 2275inline_speed void
2036ev_start (EV_P_ W w, int active) 2276ev_start (EV_P_ W w, int active)
2037{ 2277{
2038 pri_adjust (EV_A_ w); 2278 pri_adjust (EV_A_ w);
2039 w->active = active; 2279 w->active = active;
2040 ev_ref (EV_A); 2280 ev_ref (EV_A);
2041} 2281}
2042 2282
2043void inline_size 2283inline_size void
2044ev_stop (EV_P_ W w) 2284ev_stop (EV_P_ W w)
2045{ 2285{
2046 ev_unref (EV_A); 2286 ev_unref (EV_A);
2047 w->active = 0; 2287 w->active = 0;
2048} 2288}
… …
2055 int fd = w->fd; 2295 int fd = w->fd;
2056 2296
2057 if (expect_false (ev_is_active (w))) 2297 if (expect_false (ev_is_active (w)))
2058 return; 2298 return;
2059 2299
2060 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))));
2061 2302
2062 EV_FREQUENT_CHECK; 2303 EV_FREQUENT_CHECK;
2063 2304
2064 ev_start (EV_A_ (W)w, 1); 2305 ev_start (EV_A_ (W)w, 1);
2065 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2306 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066 wlist_add (&anfds[fd].head, (WL)w); 2307 wlist_add (&anfds[fd].head, (WL)w);
2067 2308
2068 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2309 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2069 w->events &= ~EV_IOFDSET; 2310 w->events &= ~EV__IOFDSET;
2070 2311
2071 EV_FREQUENT_CHECK; 2312 EV_FREQUENT_CHECK;
2072} 2313}
2073 2314
2074void noinline 2315void noinline
… …
2076{ 2317{
2077 clear_pending (EV_A_ (W)w); 2318 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2319 if (expect_false (!ev_is_active (w)))
2079 return; 2320 return;
2080 2321
2081 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));
2082 2323
2083 EV_FREQUENT_CHECK; 2324 EV_FREQUENT_CHECK;
2084 2325
2085 wlist_del (&anfds[w->fd].head, (WL)w); 2326 wlist_del (&anfds[w->fd].head, (WL)w);
2086 ev_stop (EV_A_ (W)w); 2327 ev_stop (EV_A_ (W)w);
… …
2096 if (expect_false (ev_is_active (w))) 2337 if (expect_false (ev_is_active (w)))
2097 return; 2338 return;
2098 2339
2099 ev_at (w) += mn_now; 2340 ev_at (w) += mn_now;
2100 2341
2101 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.));
2102 2343
2103 EV_FREQUENT_CHECK; 2344 EV_FREQUENT_CHECK;
2104 2345
2105 ++timercnt; 2346 ++timercnt;
2106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2347 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2109 ANHE_at_cache (timers [ev_active (w)]); 2350 ANHE_at_cache (timers [ev_active (w)]);
2110 upheap (timers, ev_active (w)); 2351 upheap (timers, ev_active (w));
2111 2352
2112 EV_FREQUENT_CHECK; 2353 EV_FREQUENT_CHECK;
2113 2354
2114 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2355 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115} 2356}
2116 2357
2117void noinline 2358void noinline
2118ev_timer_stop (EV_P_ ev_timer *w) 2359ev_timer_stop (EV_P_ ev_timer *w)
2119{ 2360{
… …
2124 EV_FREQUENT_CHECK; 2365 EV_FREQUENT_CHECK;
2125 2366
2126 { 2367 {
2127 int active = ev_active (w); 2368 int active = ev_active (w);
2128 2369
2129 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2370 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130 2371
2131 --timercnt; 2372 --timercnt;
2132 2373
2133 if (expect_true (active < timercnt + HEAP0)) 2374 if (expect_true (active < timercnt + HEAP0))
2134 { 2375 {
… …
2178 2419
2179 if (w->reschedule_cb) 2420 if (w->reschedule_cb)
2180 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2421 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181 else if (w->interval) 2422 else if (w->interval)
2182 { 2423 {
2183 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.));
2184 /* 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 */
2185 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;
2186 } 2427 }
2187 else 2428 else
2188 ev_at (w) = w->offset; 2429 ev_at (w) = w->offset;
… …
2196 ANHE_at_cache (periodics [ev_active (w)]); 2437 ANHE_at_cache (periodics [ev_active (w)]);
2197 upheap (periodics, ev_active (w)); 2438 upheap (periodics, ev_active (w));
2198 2439
2199 EV_FREQUENT_CHECK; 2440 EV_FREQUENT_CHECK;
2200 2441
2201 /*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));*/
2202} 2443}
2203 2444
2204void noinline 2445void noinline
2205ev_periodic_stop (EV_P_ ev_periodic *w) 2446ev_periodic_stop (EV_P_ ev_periodic *w)
2206{ 2447{
… …
2211 EV_FREQUENT_CHECK; 2452 EV_FREQUENT_CHECK;
2212 2453
2213 { 2454 {
2214 int active = ev_active (w); 2455 int active = ev_active (w);
2215 2456
2216 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2457 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217 2458
2218 --periodiccnt; 2459 --periodiccnt;
2219 2460
2220 if (expect_true (active < periodiccnt + HEAP0)) 2461 if (expect_true (active < periodiccnt + HEAP0))
2221 { 2462 {
… …
2244 2485
2245void noinline 2486void noinline
2246ev_signal_start (EV_P_ ev_signal *w) 2487ev_signal_start (EV_P_ ev_signal *w)
2247{ 2488{
2248#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
2249 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));
2250#endif 2491#endif
2251 if (expect_false (ev_is_active (w))) 2492 if (expect_false (ev_is_active (w)))
2252 return; 2493 return;
2253 2494
2254 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));
2255 2496
2256 evpipe_init (EV_A); 2497 evpipe_init (EV_A);
2257 2498
2258 EV_FREQUENT_CHECK; 2499 EV_FREQUENT_CHECK;
2259 2500
… …
2262 sigset_t full, prev; 2503 sigset_t full, prev;
2263 sigfillset (&full); 2504 sigfillset (&full);
2264 sigprocmask (SIG_SETMASK, &full, &prev); 2505 sigprocmask (SIG_SETMASK, &full, &prev);
2265#endif 2506#endif
2266 2507
2267 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2508 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268 2509
2269#ifndef _WIN32 2510#ifndef _WIN32
2270 sigprocmask (SIG_SETMASK, &prev, 0); 2511 sigprocmask (SIG_SETMASK, &prev, 0);
2271#endif 2512#endif
2272 } 2513 }
… …
2310 2551
2311void 2552void
2312ev_child_start (EV_P_ ev_child *w) 2553ev_child_start (EV_P_ ev_child *w)
2313{ 2554{
2314#if EV_MULTIPLICITY 2555#if EV_MULTIPLICITY
2315 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));
2316#endif 2557#endif
2317 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
2318 return; 2559 return;
2319 2560
2320 EV_FREQUENT_CHECK; 2561 EV_FREQUENT_CHECK;
… …
2345# ifdef _WIN32 2586# ifdef _WIN32
2346# undef lstat 2587# undef lstat
2347# define lstat(a,b) _stati64 (a,b) 2588# define lstat(a,b) _stati64 (a,b)
2348# endif 2589# endif
2349 2590
2350#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 */
2351#define MIN_STAT_INTERVAL 0.1074891 2593#define MIN_STAT_INTERVAL 0.1074891
2352 2594
2353static 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);
2354 2596
2355#if EV_USE_INOTIFY 2597#if EV_USE_INOTIFY
2356# define EV_INOTIFY_BUFSIZE 8192 2598# define EV_INOTIFY_BUFSIZE 8192
… …
2360{ 2602{
2361 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2362 2604
2363 if (w->wd < 0) 2605 if (w->wd < 0)
2364 { 2606 {
2607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2608 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2366 2609
2367 /* monitor some parent directory for speedup hints */ 2610 /* monitor some parent directory for speedup hints */
2368 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2611 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2369 /* but an efficiency issue only */ 2612 /* but an efficiency issue only */
2370 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2613 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371 { 2614 {
2372 char path [4096]; 2615 char path [4096];
2373 strcpy (path, w->path); 2616 strcpy (path, w->path);
… …
2377 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2620 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2621 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379 2622
2380 char *pend = strrchr (path, '/'); 2623 char *pend = strrchr (path, '/');
2381 2624
2382 if (!pend) 2625 if (!pend || pend == path)
2383 break; /* whoops, no '/', complain to your admin */ 2626 break;
2384 2627
2385 *pend = 0; 2628 *pend = 0;
2386 w->wd = inotify_add_watch (fs_fd, path, mask); 2629 w->wd = inotify_add_watch (fs_fd, path, mask);
2387 } 2630 }
2388 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2631 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389 } 2632 }
2390 } 2633 }
2391 else
2392 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393 2634
2394 if (w->wd >= 0) 2635 if (w->wd >= 0)
2636 {
2395 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 }
2396} 2656}
2397 2657
2398static void noinline 2658static void noinline
2399infy_del (EV_P_ ev_stat *w) 2659infy_del (EV_P_ ev_stat *w)
2400{ 2660{
… …
2414 2674
2415static void noinline 2675static void noinline
2416infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2676infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417{ 2677{
2418 if (slot < 0) 2678 if (slot < 0)
2419 /* overflow, need to check for all hahs slots */ 2679 /* overflow, need to check for all hash slots */
2420 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2680 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421 infy_wd (EV_A_ slot, wd, ev); 2681 infy_wd (EV_A_ slot, wd, ev);
2422 else 2682 else
2423 { 2683 {
2424 WL w_; 2684 WL w_;
… …
2430 2690
2431 if (w->wd == wd || wd == -1) 2691 if (w->wd == wd || wd == -1)
2432 { 2692 {
2433 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2693 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434 { 2694 {
2695 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435 w->wd = -1; 2696 w->wd = -1;
2436 infy_add (EV_A_ w); /* re-add, no matter what */ 2697 infy_add (EV_A_ w); /* re-add, no matter what */
2437 } 2698 }
2438 2699
2439 stat_timer_cb (EV_A_ &w->timer, 0); 2700 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2452 2713
2453 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)
2454 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2715 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455} 2716}
2456 2717
2457void 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
2458infy_init (EV_P) 2742infy_init (EV_P)
2459{ 2743{
2460 if (fs_fd != -2) 2744 if (fs_fd != -2)
2461 return; 2745 return;
2746
2747 fs_fd = -1;
2748
2749 check_2625 (EV_A);
2462 2750
2463 fs_fd = inotify_init (); 2751 fs_fd = inotify_init ();
2464 2752
2465 if (fs_fd >= 0) 2753 if (fs_fd >= 0)
2466 { 2754 {
… …
2468 ev_set_priority (&fs_w, EV_MAXPRI); 2756 ev_set_priority (&fs_w, EV_MAXPRI);
2469 ev_io_start (EV_A_ &fs_w); 2757 ev_io_start (EV_A_ &fs_w);
2470 } 2758 }
2471} 2759}
2472 2760
2473void inline_size 2761inline_size void
2474infy_fork (EV_P) 2762infy_fork (EV_P)
2475{ 2763{
2476 int slot; 2764 int slot;
2477 2765
2478 if (fs_fd < 0) 2766 if (fs_fd < 0)
… …
2494 w->wd = -1; 2782 w->wd = -1;
2495 2783
2496 if (fs_fd >= 0) 2784 if (fs_fd >= 0)
2497 infy_add (EV_A_ w); /* re-add, no matter what */ 2785 infy_add (EV_A_ w); /* re-add, no matter what */
2498 else 2786 else
2499 ev_timer_start (EV_A_ &w->timer); 2787 ev_timer_again (EV_A_ &w->timer);
2500 } 2788 }
2501
2502 } 2789 }
2503} 2790}
2504 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)
2505#endif 2798#endif
2506 2799
2507void 2800void
2508ev_stat_stat (EV_P_ ev_stat *w) 2801ev_stat_stat (EV_P_ ev_stat *w)
2509{ 2802{
… …
2536 || w->prev.st_atime != w->attr.st_atime 2829 || w->prev.st_atime != w->attr.st_atime
2537 || w->prev.st_mtime != w->attr.st_mtime 2830 || w->prev.st_mtime != w->attr.st_mtime
2538 || w->prev.st_ctime != w->attr.st_ctime 2831 || w->prev.st_ctime != w->attr.st_ctime
2539 ) { 2832 ) {
2540 #if EV_USE_INOTIFY 2833 #if EV_USE_INOTIFY
2834 if (fs_fd >= 0)
2835 {
2541 infy_del (EV_A_ w); 2836 infy_del (EV_A_ w);
2542 infy_add (EV_A_ w); 2837 infy_add (EV_A_ w);
2543 ev_stat_stat (EV_A_ w); /* avoid race... */ 2838 ev_stat_stat (EV_A_ w); /* avoid race... */
2839 }
2544 #endif 2840 #endif
2545 2841
2546 ev_feed_event (EV_A_ w, EV_STAT); 2842 ev_feed_event (EV_A_ w, EV_STAT);
2547 } 2843 }
2548} 2844}
… …
2551ev_stat_start (EV_P_ ev_stat *w) 2847ev_stat_start (EV_P_ ev_stat *w)
2552{ 2848{
2553 if (expect_false (ev_is_active (w))) 2849 if (expect_false (ev_is_active (w)))
2554 return; 2850 return;
2555 2851
2556 /* since we use memcmp, we need to clear any padding data etc. */
2557 memset (&w->prev, 0, sizeof (ev_statdata));
2558 memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560 ev_stat_stat (EV_A_ w); 2852 ev_stat_stat (EV_A_ w);
2561 2853
2854 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562 if (w->interval < MIN_STAT_INTERVAL) 2855 w->interval = MIN_STAT_INTERVAL;
2563 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564 2856
2565 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);
2566 ev_set_priority (&w->timer, ev_priority (w)); 2858 ev_set_priority (&w->timer, ev_priority (w));
2567 2859
2568#if EV_USE_INOTIFY 2860#if EV_USE_INOTIFY
2569 infy_init (EV_A); 2861 infy_init (EV_A);
2570 2862
2571 if (fs_fd >= 0) 2863 if (fs_fd >= 0)
2572 infy_add (EV_A_ w); 2864 infy_add (EV_A_ w);
2573 else 2865 else
2574#endif 2866#endif
2575 ev_timer_start (EV_A_ &w->timer); 2867 ev_timer_again (EV_A_ &w->timer);
2576 2868
2577 ev_start (EV_A_ (W)w, 1); 2869 ev_start (EV_A_ (W)w, 1);
2578 2870
2579 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2580} 2872}
… …
2750 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3042 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751 } 3043 }
2752 } 3044 }
2753} 3045}
2754 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
2755#if 0 3064#if 0
2756static void 3065static void
2757embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3066embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758{ 3067{
2759 ev_idle_stop (EV_A_ idle); 3068 ev_idle_stop (EV_A_ idle);
… …
2766 if (expect_false (ev_is_active (w))) 3075 if (expect_false (ev_is_active (w)))
2767 return; 3076 return;
2768 3077
2769 { 3078 {
2770 struct ev_loop *loop = w->other; 3079 struct ev_loop *loop = w->other;
2771 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 ()));
2772 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);
2773 } 3082 }
2774 3083
2775 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
2776 3085
… …
2779 3088
2780 ev_prepare_init (&w->prepare, embed_prepare_cb); 3089 ev_prepare_init (&w->prepare, embed_prepare_cb);
2781 ev_set_priority (&w->prepare, EV_MINPRI); 3090 ev_set_priority (&w->prepare, EV_MINPRI);
2782 ev_prepare_start (EV_A_ &w->prepare); 3091 ev_prepare_start (EV_A_ &w->prepare);
2783 3092
3093 ev_fork_init (&w->fork, embed_fork_cb);
3094 ev_fork_start (EV_A_ &w->fork);
3095
2784 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3096 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785 3097
2786 ev_start (EV_A_ (W)w, 1); 3098 ev_start (EV_A_ (W)w, 1);
2787 3099
2788 EV_FREQUENT_CHECK; 3100 EV_FREQUENT_CHECK;
… …
2795 if (expect_false (!ev_is_active (w))) 3107 if (expect_false (!ev_is_active (w)))
2796 return; 3108 return;
2797 3109
2798 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2799 3111
2800 ev_io_stop (EV_A_ &w->io); 3112 ev_io_stop (EV_A_ &w->io);
2801 ev_prepare_stop (EV_A_ &w->prepare); 3113 ev_prepare_stop (EV_A_ &w->prepare);
2802 3114 ev_fork_stop (EV_A_ &w->fork);
2803 ev_stop (EV_A_ (W)w);
2804 3115
2805 EV_FREQUENT_CHECK; 3116 EV_FREQUENT_CHECK;
2806} 3117}
2807#endif 3118#endif
2808 3119
… …
2905once_cb (EV_P_ struct ev_once *once, int revents) 3216once_cb (EV_P_ struct ev_once *once, int revents)
2906{ 3217{
2907 void (*cb)(int revents, void *arg) = once->cb; 3218 void (*cb)(int revents, void *arg) = once->cb;
2908 void *arg = once->arg; 3219 void *arg = once->arg;
2909 3220
2910 ev_io_stop (EV_A_ &once->io); 3221 ev_io_stop (EV_A_ &once->io);
2911 ev_timer_stop (EV_A_ &once->to); 3222 ev_timer_stop (EV_A_ &once->to);
2912 ev_free (once); 3223 ev_free (once);
2913 3224
2914 cb (revents, arg); 3225 cb (revents, arg);
2915} 3226}
2916 3227
2917static void 3228static void
2918once_cb_io (EV_P_ ev_io *w, int revents) 3229once_cb_io (EV_P_ ev_io *w, int revents)
2919{ 3230{
2920 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));
2921} 3234}
2922 3235
2923static void 3236static void
2924once_cb_to (EV_P_ ev_timer *w, int revents) 3237once_cb_to (EV_P_ ev_timer *w, int revents)
2925{ 3238{
2926 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));
2927} 3242}
2928 3243
2929void 3244void
2930ev_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)
2931{ 3246{
… …
2953 ev_timer_set (&once->to, timeout, 0.); 3268 ev_timer_set (&once->to, timeout, 0.);
2954 ev_timer_start (EV_A_ &once->to); 3269 ev_timer_start (EV_A_ &once->to);
2955 } 3270 }
2956} 3271}
2957 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
2958#if EV_MULTIPLICITY 3381#if EV_MULTIPLICITY
2959 #include "ev_wrap.h" 3382 #include "ev_wrap.h"
2960#endif 3383#endif
2961 3384
2962#ifdef __cplusplus 3385#ifdef __cplusplus

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