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Comparing libev/ev.c (file contents):
Revision 1.231 by root, Mon May 5 20:47:33 2008 UTC vs.
Revision 1.306 by root, Sun Jul 19 06:35:25 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
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
136#include <fcntl.h> 158#include <fcntl.h>
… …
154#ifndef _WIN32 176#ifndef _WIN32
155# include <sys/time.h> 177# include <sys/time.h>
156# include <sys/wait.h> 178# include <sys/wait.h>
157# include <unistd.h> 179# include <unistd.h>
158#else 180#else
181# include <io.h>
159# define WIN32_LEAN_AND_MEAN 182# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 183# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 184# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 185# define EV_SELECT_IS_WINSOCKET 1
163# endif 186# endif
164#endif 187#endif
165 188
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
167 190
191/* try to deduce the maximum number of signals on this platform */
192/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG)
194/* use what's provided */
195#elif defined (NSIG)
196# define EV_NSIG (NSIG)
197#elif defined(_NSIG)
198# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX)
200# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX)
202# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX)
204# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else
214# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */
216# define EV_NSIG 65
217#endif
218
219#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1
222# else
223# define EV_USE_CLOCK_SYSCALL 0
224# endif
225#endif
226
168#ifndef EV_USE_MONOTONIC 227#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1
230# else
169# define EV_USE_MONOTONIC 0 231# define EV_USE_MONOTONIC 0
232# endif
170#endif 233#endif
171 234
172#ifndef EV_USE_REALTIME 235#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 237#endif
175 238
176#ifndef EV_USE_NANOSLEEP 239#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1
242# else
177# define EV_USE_NANOSLEEP 0 243# define EV_USE_NANOSLEEP 0
244# endif
178#endif 245#endif
179 246
180#ifndef EV_USE_SELECT 247#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 248# define EV_USE_SELECT 1
182#endif 249#endif
… …
235# else 302# else
236# define EV_USE_EVENTFD 0 303# define EV_USE_EVENTFD 0
237# endif 304# endif
238#endif 305#endif
239 306
307#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
309# define EV_USE_SIGNALFD 1
310# else
311# define EV_USE_SIGNALFD 0
312# endif
313#endif
314
315#if 0 /* debugging */
316# define EV_VERIFY 3
317# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1
319#endif
320
321#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL
323#endif
324
325#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL
327#endif
328
329#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL
331#endif
332
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h>
337# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1
341# else
342# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0
344# endif
345#endif
346
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 347/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 348
242#ifndef CLOCK_MONOTONIC 349#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 350# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 351# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 366# include <sys/select.h>
260# endif 367# endif
261#endif 368#endif
262 369
263#if EV_USE_INOTIFY 370#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h>
264# include <sys/inotify.h> 373# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0
378# endif
265#endif 379#endif
266 380
267#if EV_SELECT_IS_WINSOCKET 381#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 382# include <winsock.h>
269#endif 383#endif
270 384
271#if EV_USE_EVENTFD 385#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 387# include <stdint.h>
388# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK
390# endif
391# ifndef EFD_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC
393# endif
274# ifdef __cplusplus 394# ifdef __cplusplus
275extern "C" { 395extern "C" {
276# endif 396# endif
277int eventfd (unsigned int initval, int flags); 397int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus 398# ifdef __cplusplus
279} 399}
280# endif 400# endif
281#endif 401#endif
282 402
403#if EV_USE_SIGNALFD
404# include <sys/signalfd.h>
405#endif
406
283/**/ 407/**/
408
409#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
411#else
412# define EV_FREQUENT_CHECK do { } while (0)
413#endif
284 414
285/* 415/*
286 * This is used to avoid floating point rounding problems. 416 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 417 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 418 * to ensure progress, time-wise, even when rounding
… …
315# define inline_speed static noinline 445# define inline_speed static noinline
316#else 446#else
317# define inline_speed static inline 447# define inline_speed static inline
318#endif 448#endif
319 449
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451
452#if EV_MINPRI == EV_MAXPRI
453# define ABSPRI(w) (((W)w), 0)
454#else
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 455# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
456#endif
322 457
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 458#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 459#define EMPTY2(a,b) /* used to suppress some warnings */
325 460
326typedef ev_watcher *W; 461typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 463typedef ev_watcher_time *WT;
329 464
330#define ev_active(w) ((W)(w))->active 465#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 466#define ev_at(w) ((WT)(w))->at
332 467
333#if EV_USE_MONOTONIC 468#if EV_USE_REALTIME
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 469/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */ 470/* giving it a reasonably high chance of working on typical architetcures */
471static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
472#endif
473
474#if EV_USE_MONOTONIC
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif 476#endif
338 477
339#ifdef _WIN32 478#ifdef _WIN32
340# include "ev_win32.c" 479# include "ev_win32.c"
… …
349{ 488{
350 syserr_cb = cb; 489 syserr_cb = cb;
351} 490}
352 491
353static void noinline 492static void noinline
354syserr (const char *msg) 493ev_syserr (const char *msg)
355{ 494{
356 if (!msg) 495 if (!msg)
357 msg = "(libev) system error"; 496 msg = "(libev) system error";
358 497
359 if (syserr_cb) 498 if (syserr_cb)
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 544#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 545#define ev_free(ptr) ev_realloc ((ptr), 0)
407 546
408/*****************************************************************************/ 547/*****************************************************************************/
409 548
549/* set in reify when reification needed */
550#define EV_ANFD_REIFY 1
551
552/* file descriptor info structure */
410typedef struct 553typedef struct
411{ 554{
412 WL head; 555 WL head;
413 unsigned char events; 556 unsigned char events; /* the events watched for */
557 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
558 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 559 unsigned char unused;
560#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif
415#if EV_SELECT_IS_WINSOCKET 563#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 564 SOCKET handle;
417#endif 565#endif
418} ANFD; 566} ANFD;
419 567
568/* stores the pending event set for a given watcher */
420typedef struct 569typedef struct
421{ 570{
422 W w; 571 W w;
423 int events; 572 int events; /* the pending event set for the given watcher */
424} ANPENDING; 573} ANPENDING;
425 574
426#if EV_USE_INOTIFY 575#if EV_USE_INOTIFY
576/* hash table entry per inotify-id */
427typedef struct 577typedef struct
428{ 578{
429 WL head; 579 WL head;
430} ANFS; 580} ANFS;
581#endif
582
583/* Heap Entry */
584#if EV_HEAP_CACHE_AT
585 /* a heap element */
586 typedef struct {
587 ev_tstamp at;
588 WT w;
589 } ANHE;
590
591 #define ANHE_w(he) (he).w /* access watcher, read-write */
592 #define ANHE_at(he) (he).at /* access cached at, read-only */
593 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
594#else
595 /* a heap element */
596 typedef WT ANHE;
597
598 #define ANHE_w(he) (he)
599 #define ANHE_at(he) (he)->at
600 #define ANHE_at_cache(he)
431#endif 601#endif
432 602
433#if EV_MULTIPLICITY 603#if EV_MULTIPLICITY
434 604
435 struct ev_loop 605 struct ev_loop
… …
454 624
455 static int ev_default_loop_ptr; 625 static int ev_default_loop_ptr;
456 626
457#endif 627#endif
458 628
629#if EV_MINIMAL < 2
630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else
634# define EV_RELEASE_CB (void)0
635# define EV_ACQUIRE_CB (void)0
636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
637#endif
638
639#define EVUNLOOP_RECURSE 0x80
640
459/*****************************************************************************/ 641/*****************************************************************************/
460 642
643#ifndef EV_HAVE_EV_TIME
461ev_tstamp 644ev_tstamp
462ev_time (void) 645ev_time (void)
463{ 646{
464#if EV_USE_REALTIME 647#if EV_USE_REALTIME
648 if (expect_true (have_realtime))
649 {
465 struct timespec ts; 650 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 651 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 652 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 653 }
654#endif
655
469 struct timeval tv; 656 struct timeval tv;
470 gettimeofday (&tv, 0); 657 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 658 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 659}
660#endif
474 661
475ev_tstamp inline_size 662inline_size ev_tstamp
476get_clock (void) 663get_clock (void)
477{ 664{
478#if EV_USE_MONOTONIC 665#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 666 if (expect_true (have_monotonic))
480 { 667 {
… …
513 struct timeval tv; 700 struct timeval tv;
514 701
515 tv.tv_sec = (time_t)delay; 702 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517 704
705 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
706 /* something not guaranteed by newer posix versions, but guaranteed */
707 /* by older ones */
518 select (0, 0, 0, 0, &tv); 708 select (0, 0, 0, 0, &tv);
519#endif 709#endif
520 } 710 }
521} 711}
522 712
523/*****************************************************************************/ 713/*****************************************************************************/
524 714
525int inline_size 715#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
716
717/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */
719inline_size int
526array_nextsize (int elem, int cur, int cnt) 720array_nextsize (int elem, int cur, int cnt)
527{ 721{
528 int ncur = cur + 1; 722 int ncur = cur + 1;
529 723
530 do 724 do
531 ncur <<= 1; 725 ncur <<= 1;
532 while (cnt > ncur); 726 while (cnt > ncur);
533 727
534 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 728 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
535 if (elem * ncur > 4096) 729 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
536 { 730 {
537 ncur *= elem; 731 ncur *= elem;
538 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 732 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
539 ncur = ncur - sizeof (void *) * 4; 733 ncur = ncur - sizeof (void *) * 4;
540 ncur /= elem; 734 ncur /= elem;
541 } 735 }
542 736
543 return ncur; 737 return ncur;
… …
547array_realloc (int elem, void *base, int *cur, int cnt) 741array_realloc (int elem, void *base, int *cur, int cnt)
548{ 742{
549 *cur = array_nextsize (elem, *cur, cnt); 743 *cur = array_nextsize (elem, *cur, cnt);
550 return ev_realloc (base, elem * *cur); 744 return ev_realloc (base, elem * *cur);
551} 745}
746
747#define array_init_zero(base,count) \
748 memset ((void *)(base), 0, sizeof (*(base)) * (count))
552 749
553#define array_needsize(type,base,cur,cnt,init) \ 750#define array_needsize(type,base,cur,cnt,init) \
554 if (expect_false ((cnt) > (cur))) \ 751 if (expect_false ((cnt) > (cur))) \
555 { \ 752 { \
556 int ocur_ = (cur); \ 753 int ocur_ = (cur); \
… …
568 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 765 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
569 } 766 }
570#endif 767#endif
571 768
572#define array_free(stem, idx) \ 769#define array_free(stem, idx) \
573 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 770 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
574 771
575/*****************************************************************************/ 772/*****************************************************************************/
773
774/* dummy callback for pending events */
775static void noinline
776pendingcb (EV_P_ ev_prepare *w, int revents)
777{
778}
576 779
577void noinline 780void noinline
578ev_feed_event (EV_P_ void *w, int revents) 781ev_feed_event (EV_P_ void *w, int revents)
579{ 782{
580 W w_ = (W)w; 783 W w_ = (W)w;
… …
589 pendings [pri][w_->pending - 1].w = w_; 792 pendings [pri][w_->pending - 1].w = w_;
590 pendings [pri][w_->pending - 1].events = revents; 793 pendings [pri][w_->pending - 1].events = revents;
591 } 794 }
592} 795}
593 796
594void inline_speed 797inline_speed void
798feed_reverse (EV_P_ W w)
799{
800 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
801 rfeeds [rfeedcnt++] = w;
802}
803
804inline_size void
805feed_reverse_done (EV_P_ int revents)
806{
807 do
808 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
809 while (rfeedcnt);
810}
811
812inline_speed void
595queue_events (EV_P_ W *events, int eventcnt, int type) 813queue_events (EV_P_ W *events, int eventcnt, int type)
596{ 814{
597 int i; 815 int i;
598 816
599 for (i = 0; i < eventcnt; ++i) 817 for (i = 0; i < eventcnt; ++i)
600 ev_feed_event (EV_A_ events [i], type); 818 ev_feed_event (EV_A_ events [i], type);
601} 819}
602 820
603/*****************************************************************************/ 821/*****************************************************************************/
604 822
605void inline_size 823inline_speed void
606anfds_init (ANFD *base, int count)
607{
608 while (count--)
609 {
610 base->head = 0;
611 base->events = EV_NONE;
612 base->reify = 0;
613
614 ++base;
615 }
616}
617
618void inline_speed
619fd_event (EV_P_ int fd, int revents) 824fd_event_nc (EV_P_ int fd, int revents)
620{ 825{
621 ANFD *anfd = anfds + fd; 826 ANFD *anfd = anfds + fd;
622 ev_io *w; 827 ev_io *w;
623 828
624 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 829 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
628 if (ev) 833 if (ev)
629 ev_feed_event (EV_A_ (W)w, ev); 834 ev_feed_event (EV_A_ (W)w, ev);
630 } 835 }
631} 836}
632 837
838/* do not submit kernel events for fds that have reify set */
839/* because that means they changed while we were polling for new events */
840inline_speed void
841fd_event (EV_P_ int fd, int revents)
842{
843 ANFD *anfd = anfds + fd;
844
845 if (expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents);
847}
848
633void 849void
634ev_feed_fd_event (EV_P_ int fd, int revents) 850ev_feed_fd_event (EV_P_ int fd, int revents)
635{ 851{
636 if (fd >= 0 && fd < anfdmax) 852 if (fd >= 0 && fd < anfdmax)
637 fd_event (EV_A_ fd, revents); 853 fd_event_nc (EV_A_ fd, revents);
638} 854}
639 855
640void inline_size 856/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */
858inline_size void
641fd_reify (EV_P) 859fd_reify (EV_P)
642{ 860{
643 int i; 861 int i;
644 862
645 for (i = 0; i < fdchangecnt; ++i) 863 for (i = 0; i < fdchangecnt; ++i)
… …
654 events |= (unsigned char)w->events; 872 events |= (unsigned char)w->events;
655 873
656#if EV_SELECT_IS_WINSOCKET 874#if EV_SELECT_IS_WINSOCKET
657 if (events) 875 if (events)
658 { 876 {
659 unsigned long argp; 877 unsigned long arg;
660 #ifdef EV_FD_TO_WIN32_HANDLE 878 #ifdef EV_FD_TO_WIN32_HANDLE
661 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
662 #else 880 #else
663 anfd->handle = _get_osfhandle (fd); 881 anfd->handle = _get_osfhandle (fd);
664 #endif 882 #endif
665 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
666 } 884 }
667#endif 885#endif
668 886
669 { 887 {
670 unsigned char o_events = anfd->events; 888 unsigned char o_events = anfd->events;
671 unsigned char o_reify = anfd->reify; 889 unsigned char o_reify = anfd->reify;
672 890
673 anfd->reify = 0; 891 anfd->reify = 0;
674 anfd->events = events; 892 anfd->events = events;
675 893
676 if (o_events != events || o_reify & EV_IOFDSET) 894 if (o_events != events || o_reify & EV__IOFDSET)
677 backend_modify (EV_A_ fd, o_events, events); 895 backend_modify (EV_A_ fd, o_events, events);
678 } 896 }
679 } 897 }
680 898
681 fdchangecnt = 0; 899 fdchangecnt = 0;
682} 900}
683 901
684void inline_size 902/* something about the given fd changed */
903inline_size void
685fd_change (EV_P_ int fd, int flags) 904fd_change (EV_P_ int fd, int flags)
686{ 905{
687 unsigned char reify = anfds [fd].reify; 906 unsigned char reify = anfds [fd].reify;
688 anfds [fd].reify |= flags; 907 anfds [fd].reify |= flags;
689 908
… …
693 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 912 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
694 fdchanges [fdchangecnt - 1] = fd; 913 fdchanges [fdchangecnt - 1] = fd;
695 } 914 }
696} 915}
697 916
698void inline_speed 917/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
918inline_speed void
699fd_kill (EV_P_ int fd) 919fd_kill (EV_P_ int fd)
700{ 920{
701 ev_io *w; 921 ev_io *w;
702 922
703 while ((w = (ev_io *)anfds [fd].head)) 923 while ((w = (ev_io *)anfds [fd].head))
… …
705 ev_io_stop (EV_A_ w); 925 ev_io_stop (EV_A_ w);
706 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 926 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
707 } 927 }
708} 928}
709 929
710int inline_size 930/* check whether the given fd is atcually valid, for error recovery */
931inline_size int
711fd_valid (int fd) 932fd_valid (int fd)
712{ 933{
713#ifdef _WIN32 934#ifdef _WIN32
714 return _get_osfhandle (fd) != -1; 935 return _get_osfhandle (fd) != -1;
715#else 936#else
… …
723{ 944{
724 int fd; 945 int fd;
725 946
726 for (fd = 0; fd < anfdmax; ++fd) 947 for (fd = 0; fd < anfdmax; ++fd)
727 if (anfds [fd].events) 948 if (anfds [fd].events)
728 if (!fd_valid (fd) == -1 && errno == EBADF) 949 if (!fd_valid (fd) && errno == EBADF)
729 fd_kill (EV_A_ fd); 950 fd_kill (EV_A_ fd);
730} 951}
731 952
732/* called on ENOMEM in select/poll to kill some fds and retry */ 953/* called on ENOMEM in select/poll to kill some fds and retry */
733static void noinline 954static void noinline
… …
751 972
752 for (fd = 0; fd < anfdmax; ++fd) 973 for (fd = 0; fd < anfdmax; ++fd)
753 if (anfds [fd].events) 974 if (anfds [fd].events)
754 { 975 {
755 anfds [fd].events = 0; 976 anfds [fd].events = 0;
977 anfds [fd].emask = 0;
756 fd_change (EV_A_ fd, EV_IOFDSET | 1); 978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
757 } 979 }
758} 980}
759 981
760/*****************************************************************************/ 982/*****************************************************************************/
761 983
984/*
985 * the heap functions want a real array index. array index 0 uis guaranteed to not
986 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
987 * the branching factor of the d-tree.
988 */
989
990/*
991 * at the moment we allow libev the luxury of two heaps,
992 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
993 * which is more cache-efficient.
994 * the difference is about 5% with 50000+ watchers.
995 */
996#if EV_USE_4HEAP
997
998#define DHEAP 4
999#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1000#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1001#define UPHEAP_DONE(p,k) ((p) == (k))
1002
1003/* away from the root */
1004inline_speed void
1005downheap (ANHE *heap, int N, int k)
1006{
1007 ANHE he = heap [k];
1008 ANHE *E = heap + N + HEAP0;
1009
1010 for (;;)
1011 {
1012 ev_tstamp minat;
1013 ANHE *minpos;
1014 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1015
1016 /* find minimum child */
1017 if (expect_true (pos + DHEAP - 1 < E))
1018 {
1019 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1020 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1021 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1022 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1023 }
1024 else if (pos < E)
1025 {
1026 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1027 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1028 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1029 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1030 }
1031 else
1032 break;
1033
1034 if (ANHE_at (he) <= minat)
1035 break;
1036
1037 heap [k] = *minpos;
1038 ev_active (ANHE_w (*minpos)) = k;
1039
1040 k = minpos - heap;
1041 }
1042
1043 heap [k] = he;
1044 ev_active (ANHE_w (he)) = k;
1045}
1046
1047#else /* 4HEAP */
1048
1049#define HEAP0 1
1050#define HPARENT(k) ((k) >> 1)
1051#define UPHEAP_DONE(p,k) (!(p))
1052
1053/* away from the root */
1054inline_speed void
1055downheap (ANHE *heap, int N, int k)
1056{
1057 ANHE he = heap [k];
1058
1059 for (;;)
1060 {
1061 int c = k << 1;
1062
1063 if (c > N + HEAP0 - 1)
1064 break;
1065
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0;
1068
1069 if (ANHE_at (he) <= ANHE_at (heap [c]))
1070 break;
1071
1072 heap [k] = heap [c];
1073 ev_active (ANHE_w (heap [k])) = k;
1074
1075 k = c;
1076 }
1077
1078 heap [k] = he;
1079 ev_active (ANHE_w (he)) = k;
1080}
1081#endif
1082
762/* towards the root */ 1083/* towards the root */
763void inline_speed 1084inline_speed void
764upheap (WT *heap, int k) 1085upheap (ANHE *heap, int k)
765{ 1086{
766 WT w = heap [k]; 1087 ANHE he = heap [k];
767 1088
768 for (;;) 1089 for (;;)
769 { 1090 {
770 int p = k >> 1; 1091 int p = HPARENT (k);
771 1092
772 /* maybe we could use a dummy element at heap [0]? */ 1093 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
773 if (!p || heap [p]->at <= w->at)
774 break; 1094 break;
775 1095
776 heap [k] = heap [p]; 1096 heap [k] = heap [p];
777 ev_active (heap [k]) = k; 1097 ev_active (ANHE_w (heap [k])) = k;
778 k = p; 1098 k = p;
779 } 1099 }
780 1100
781 heap [k] = w; 1101 heap [k] = he;
782 ev_active (heap [k]) = k; 1102 ev_active (ANHE_w (he)) = k;
783} 1103}
784 1104
785/* away from the root */ 1105/* move an element suitably so it is in a correct place */
786void inline_speed 1106inline_size void
787downheap (WT *heap, int N, int k)
788{
789 WT w = heap [k];
790
791 for (;;)
792 {
793 int c = k << 1;
794
795 if (c > N)
796 break;
797
798 c += c < N && heap [c]->at > heap [c + 1]->at
799 ? 1 : 0;
800
801 if (w->at <= heap [c]->at)
802 break;
803
804 heap [k] = heap [c];
805 ev_active (heap [k]) = k;
806
807 k = c;
808 }
809
810 heap [k] = w;
811 ev_active (heap [k]) = k;
812}
813
814void inline_size
815adjustheap (WT *heap, int N, int k) 1107adjustheap (ANHE *heap, int N, int k)
816{ 1108{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
817 upheap (heap, k); 1110 upheap (heap, k);
1111 else
818 downheap (heap, N, k); 1112 downheap (heap, N, k);
1113}
1114
1115/* rebuild the heap: this function is used only once and executed rarely */
1116inline_size void
1117reheap (ANHE *heap, int N)
1118{
1119 int i;
1120
1121 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1122 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1123 for (i = 0; i < N; ++i)
1124 upheap (heap, i + HEAP0);
819} 1125}
820 1126
821/*****************************************************************************/ 1127/*****************************************************************************/
822 1128
1129/* associate signal watchers to a signal signal */
823typedef struct 1130typedef struct
824{ 1131{
1132#if EV_MULTIPLICITY
1133 EV_P;
1134#endif
825 WL head; 1135 WL head;
826 EV_ATOMIC_T gotsig; 1136 EV_ATOMIC_T gotsig;
827} ANSIG; 1137} ANSIG;
828 1138
829static ANSIG *signals; 1139static ANSIG signals [EV_NSIG - 1];
830static int signalmax;
831
832static EV_ATOMIC_T gotsig; 1140static EV_ATOMIC_T gotsig;
833 1141
834void inline_size
835signals_init (ANSIG *base, int count)
836{
837 while (count--)
838 {
839 base->head = 0;
840 base->gotsig = 0;
841
842 ++base;
843 }
844}
845
846/*****************************************************************************/ 1142/*****************************************************************************/
847 1143
848void inline_speed 1144/* used to prepare libev internal fd's */
1145/* this is not fork-safe */
1146inline_speed void
849fd_intern (int fd) 1147fd_intern (int fd)
850{ 1148{
851#ifdef _WIN32 1149#ifdef _WIN32
852 int arg = 1; 1150 unsigned long arg = 1;
853 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
854#else 1152#else
855 fcntl (fd, F_SETFD, FD_CLOEXEC); 1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
856 fcntl (fd, F_SETFL, O_NONBLOCK); 1154 fcntl (fd, F_SETFL, O_NONBLOCK);
857#endif 1155#endif
858} 1156}
859 1157
860static void noinline 1158static void noinline
861evpipe_init (EV_P) 1159evpipe_init (EV_P)
862{ 1160{
863 if (!ev_is_active (&pipeev)) 1161 if (!ev_is_active (&pipe_w))
864 { 1162 {
865#if EV_USE_EVENTFD 1163#if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165 if (evfd < 0 && errno == EINVAL)
866 if ((evfd = eventfd (0, 0)) >= 0) 1166 evfd = eventfd (0, 0);
1167
1168 if (evfd >= 0)
867 { 1169 {
868 evpipe [0] = -1; 1170 evpipe [0] = -1;
869 fd_intern (evfd); 1171 fd_intern (evfd); /* doing it twice doesn't hurt */
870 ev_io_set (&pipeev, evfd, EV_READ); 1172 ev_io_set (&pipe_w, evfd, EV_READ);
871 } 1173 }
872 else 1174 else
873#endif 1175#endif
874 { 1176 {
875 while (pipe (evpipe)) 1177 while (pipe (evpipe))
876 syserr ("(libev) error creating signal/async pipe"); 1178 ev_syserr ("(libev) error creating signal/async pipe");
877 1179
878 fd_intern (evpipe [0]); 1180 fd_intern (evpipe [0]);
879 fd_intern (evpipe [1]); 1181 fd_intern (evpipe [1]);
880 ev_io_set (&pipeev, evpipe [0], EV_READ); 1182 ev_io_set (&pipe_w, evpipe [0], EV_READ);
881 } 1183 }
882 1184
883 ev_io_start (EV_A_ &pipeev); 1185 ev_io_start (EV_A_ &pipe_w);
884 ev_unref (EV_A); /* watcher should not keep loop alive */ 1186 ev_unref (EV_A); /* watcher should not keep loop alive */
885 } 1187 }
886} 1188}
887 1189
888void inline_size 1190inline_size void
889evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1191evpipe_write (EV_P_ EV_ATOMIC_T *flag)
890{ 1192{
891 if (!*flag) 1193 if (!*flag)
892 { 1194 {
893 int old_errno = errno; /* save errno because write might clobber it */ 1195 int old_errno = errno; /* save errno because write might clobber it */
… …
906 1208
907 errno = old_errno; 1209 errno = old_errno;
908 } 1210 }
909} 1211}
910 1212
1213/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */
911static void 1215static void
912pipecb (EV_P_ ev_io *iow, int revents) 1216pipecb (EV_P_ ev_io *iow, int revents)
913{ 1217{
914#if EV_USE_EVENTFD 1218#if EV_USE_EVENTFD
915 if (evfd >= 0) 1219 if (evfd >= 0)
916 { 1220 {
917 uint64_t counter = 1; 1221 uint64_t counter;
918 read (evfd, &counter, sizeof (uint64_t)); 1222 read (evfd, &counter, sizeof (uint64_t));
919 } 1223 }
920 else 1224 else
921#endif 1225#endif
922 { 1226 {
… …
927 if (gotsig && ev_is_default_loop (EV_A)) 1231 if (gotsig && ev_is_default_loop (EV_A))
928 { 1232 {
929 int signum; 1233 int signum;
930 gotsig = 0; 1234 gotsig = 0;
931 1235
932 for (signum = signalmax; signum--; ) 1236 for (signum = EV_NSIG - 1; signum--; )
933 if (signals [signum].gotsig) 1237 if (signals [signum].gotsig)
934 ev_feed_signal_event (EV_A_ signum + 1); 1238 ev_feed_signal_event (EV_A_ signum + 1);
935 } 1239 }
936 1240
937#if EV_ASYNC_ENABLE 1241#if EV_ASYNC_ENABLE
… …
954 1258
955static void 1259static void
956ev_sighandler (int signum) 1260ev_sighandler (int signum)
957{ 1261{
958#if EV_MULTIPLICITY 1262#if EV_MULTIPLICITY
959 struct ev_loop *loop = &default_loop_struct; 1263 EV_P = signals [signum - 1].loop;
960#endif 1264#endif
961 1265
962#if _WIN32 1266#if _WIN32
963 signal (signum, ev_sighandler); 1267 signal (signum, ev_sighandler);
964#endif 1268#endif
… …
971ev_feed_signal_event (EV_P_ int signum) 1275ev_feed_signal_event (EV_P_ int signum)
972{ 1276{
973 WL w; 1277 WL w;
974 1278
975#if EV_MULTIPLICITY 1279#if EV_MULTIPLICITY
976 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
977#endif 1281#endif
1282
1283 if (signum <= 0 || signum > EV_NSIG)
1284 return;
978 1285
979 --signum; 1286 --signum;
980
981 if (signum < 0 || signum >= signalmax)
982 return;
983 1287
984 signals [signum].gotsig = 0; 1288 signals [signum].gotsig = 0;
985 1289
986 for (w = signals [signum].head; w; w = w->next) 1290 for (w = signals [signum].head; w; w = w->next)
987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
988} 1292}
989 1293
1294#if EV_USE_SIGNALFD
1295static void
1296sigfdcb (EV_P_ ev_io *iow, int revents)
1297{
1298 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1299
1300 for (;;)
1301 {
1302 ssize_t res = read (sigfd, si, sizeof (si));
1303
1304 /* not ISO-C, as res might be -1, but works with SuS */
1305 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1306 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1307
1308 if (res < (ssize_t)sizeof (si))
1309 break;
1310 }
1311}
1312#endif
1313
990/*****************************************************************************/ 1314/*****************************************************************************/
991 1315
992static WL childs [EV_PID_HASHSIZE]; 1316static WL childs [EV_PID_HASHSIZE];
993 1317
994#ifndef _WIN32 1318#ifndef _WIN32
… …
997 1321
998#ifndef WIFCONTINUED 1322#ifndef WIFCONTINUED
999# define WIFCONTINUED(status) 0 1323# define WIFCONTINUED(status) 0
1000#endif 1324#endif
1001 1325
1002void inline_speed 1326/* handle a single child status event */
1327inline_speed void
1003child_reap (EV_P_ int chain, int pid, int status) 1328child_reap (EV_P_ int chain, int pid, int status)
1004{ 1329{
1005 ev_child *w; 1330 ev_child *w;
1006 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1007 1332
… …
1020 1345
1021#ifndef WCONTINUED 1346#ifndef WCONTINUED
1022# define WCONTINUED 0 1347# define WCONTINUED 0
1023#endif 1348#endif
1024 1349
1350/* called on sigchld etc., calls waitpid */
1025static void 1351static void
1026childcb (EV_P_ ev_signal *sw, int revents) 1352childcb (EV_P_ ev_signal *sw, int revents)
1027{ 1353{
1028 int pid, status; 1354 int pid, status;
1029 1355
… …
1110 /* kqueue is borked on everything but netbsd apparently */ 1436 /* kqueue is borked on everything but netbsd apparently */
1111 /* it usually doesn't work correctly on anything but sockets and pipes */ 1437 /* it usually doesn't work correctly on anything but sockets and pipes */
1112 flags &= ~EVBACKEND_KQUEUE; 1438 flags &= ~EVBACKEND_KQUEUE;
1113#endif 1439#endif
1114#ifdef __APPLE__ 1440#ifdef __APPLE__
1115 // flags &= ~EVBACKEND_KQUEUE; for documentation 1441 /* only select works correctly on that "unix-certified" platform */
1116 flags &= ~EVBACKEND_POLL; 1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1117#endif 1444#endif
1118 1445
1119 return flags; 1446 return flags;
1120} 1447}
1121 1448
… …
1135ev_backend (EV_P) 1462ev_backend (EV_P)
1136{ 1463{
1137 return backend; 1464 return backend;
1138} 1465}
1139 1466
1467#if EV_MINIMAL < 2
1140unsigned int 1468unsigned int
1141ev_loop_count (EV_P) 1469ev_loop_count (EV_P)
1142{ 1470{
1143 return loop_count; 1471 return loop_count;
1144} 1472}
1145 1473
1474unsigned int
1475ev_loop_depth (EV_P)
1476{
1477 return loop_depth;
1478}
1479
1146void 1480void
1147ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1481ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1148{ 1482{
1149 io_blocktime = interval; 1483 io_blocktime = interval;
1150} 1484}
… …
1153ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1487ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1154{ 1488{
1155 timeout_blocktime = interval; 1489 timeout_blocktime = interval;
1156} 1490}
1157 1491
1492void
1493ev_set_userdata (EV_P_ void *data)
1494{
1495 userdata = data;
1496}
1497
1498void *
1499ev_userdata (EV_P)
1500{
1501 return userdata;
1502}
1503
1504void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1505{
1506 invoke_cb = invoke_pending_cb;
1507}
1508
1509void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1510{
1511 release_cb = release;
1512 acquire_cb = acquire;
1513}
1514#endif
1515
1516/* initialise a loop structure, must be zero-initialised */
1158static void noinline 1517static void noinline
1159loop_init (EV_P_ unsigned int flags) 1518loop_init (EV_P_ unsigned int flags)
1160{ 1519{
1161 if (!backend) 1520 if (!backend)
1162 { 1521 {
1522#if EV_USE_REALTIME
1523 if (!have_realtime)
1524 {
1525 struct timespec ts;
1526
1527 if (!clock_gettime (CLOCK_REALTIME, &ts))
1528 have_realtime = 1;
1529 }
1530#endif
1531
1163#if EV_USE_MONOTONIC 1532#if EV_USE_MONOTONIC
1533 if (!have_monotonic)
1164 { 1534 {
1165 struct timespec ts; 1535 struct timespec ts;
1536
1166 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1537 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1167 have_monotonic = 1; 1538 have_monotonic = 1;
1168 } 1539 }
1169#endif 1540#endif
1541
1542 /* pid check not overridable via env */
1543#ifndef _WIN32
1544 if (flags & EVFLAG_FORKCHECK)
1545 curpid = getpid ();
1546#endif
1547
1548 if (!(flags & EVFLAG_NOENV)
1549 && !enable_secure ()
1550 && getenv ("LIBEV_FLAGS"))
1551 flags = atoi (getenv ("LIBEV_FLAGS"));
1170 1552
1171 ev_rt_now = ev_time (); 1553 ev_rt_now = ev_time ();
1172 mn_now = get_clock (); 1554 mn_now = get_clock ();
1173 now_floor = mn_now; 1555 now_floor = mn_now;
1174 rtmn_diff = ev_rt_now - mn_now; 1556 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2
1558 invoke_cb = ev_invoke_pending;
1559#endif
1175 1560
1176 io_blocktime = 0.; 1561 io_blocktime = 0.;
1177 timeout_blocktime = 0.; 1562 timeout_blocktime = 0.;
1178 backend = 0; 1563 backend = 0;
1179 backend_fd = -1; 1564 backend_fd = -1;
1180 gotasync = 0; 1565 gotasync = 0;
1181#if EV_USE_INOTIFY 1566#if EV_USE_INOTIFY
1182 fs_fd = -2; 1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1183#endif 1568#endif
1184 1569#if EV_USE_SIGNALFD
1185 /* pid check not overridable via env */ 1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1186#ifndef _WIN32
1187 if (flags & EVFLAG_FORKCHECK)
1188 curpid = getpid ();
1189#endif 1571#endif
1190
1191 if (!(flags & EVFLAG_NOENV)
1192 && !enable_secure ()
1193 && getenv ("LIBEV_FLAGS"))
1194 flags = atoi (getenv ("LIBEV_FLAGS"));
1195 1572
1196 if (!(flags & 0x0000ffffU)) 1573 if (!(flags & 0x0000ffffU))
1197 flags |= ev_recommended_backends (); 1574 flags |= ev_recommended_backends ();
1198 1575
1199#if EV_USE_PORT 1576#if EV_USE_PORT
… …
1210#endif 1587#endif
1211#if EV_USE_SELECT 1588#if EV_USE_SELECT
1212 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1213#endif 1590#endif
1214 1591
1592 ev_prepare_init (&pending_w, pendingcb);
1593
1215 ev_init (&pipeev, pipecb); 1594 ev_init (&pipe_w, pipecb);
1216 ev_set_priority (&pipeev, EV_MAXPRI); 1595 ev_set_priority (&pipe_w, EV_MAXPRI);
1217 } 1596 }
1218} 1597}
1219 1598
1599/* free up a loop structure */
1220static void noinline 1600static void noinline
1221loop_destroy (EV_P) 1601loop_destroy (EV_P)
1222{ 1602{
1223 int i; 1603 int i;
1224 1604
1225 if (ev_is_active (&pipeev)) 1605 if (ev_is_active (&pipe_w))
1226 { 1606 {
1227 ev_ref (EV_A); /* signal watcher */ 1607 /*ev_ref (EV_A);*/
1228 ev_io_stop (EV_A_ &pipeev); 1608 /*ev_io_stop (EV_A_ &pipe_w);*/
1229 1609
1230#if EV_USE_EVENTFD 1610#if EV_USE_EVENTFD
1231 if (evfd >= 0) 1611 if (evfd >= 0)
1232 close (evfd); 1612 close (evfd);
1233#endif 1613#endif
… …
1237 close (evpipe [0]); 1617 close (evpipe [0]);
1238 close (evpipe [1]); 1618 close (evpipe [1]);
1239 } 1619 }
1240 } 1620 }
1241 1621
1622#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd);
1629 }
1630#endif
1631
1242#if EV_USE_INOTIFY 1632#if EV_USE_INOTIFY
1243 if (fs_fd >= 0) 1633 if (fs_fd >= 0)
1244 close (fs_fd); 1634 close (fs_fd);
1245#endif 1635#endif
1246 1636
… …
1269#if EV_IDLE_ENABLE 1659#if EV_IDLE_ENABLE
1270 array_free (idle, [i]); 1660 array_free (idle, [i]);
1271#endif 1661#endif
1272 } 1662 }
1273 1663
1274 ev_free (anfds); anfdmax = 0; 1664 ev_free (anfds); anfds = 0; anfdmax = 0;
1275 1665
1276 /* have to use the microsoft-never-gets-it-right macro */ 1666 /* have to use the microsoft-never-gets-it-right macro */
1667 array_free (rfeed, EMPTY);
1277 array_free (fdchange, EMPTY); 1668 array_free (fdchange, EMPTY);
1278 array_free (timer, EMPTY); 1669 array_free (timer, EMPTY);
1279#if EV_PERIODIC_ENABLE 1670#if EV_PERIODIC_ENABLE
1280 array_free (periodic, EMPTY); 1671 array_free (periodic, EMPTY);
1281#endif 1672#endif
… …
1290 1681
1291 backend = 0; 1682 backend = 0;
1292} 1683}
1293 1684
1294#if EV_USE_INOTIFY 1685#if EV_USE_INOTIFY
1295void inline_size infy_fork (EV_P); 1686inline_size void infy_fork (EV_P);
1296#endif 1687#endif
1297 1688
1298void inline_size 1689inline_size void
1299loop_fork (EV_P) 1690loop_fork (EV_P)
1300{ 1691{
1301#if EV_USE_PORT 1692#if EV_USE_PORT
1302 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1693 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1303#endif 1694#endif
… …
1309#endif 1700#endif
1310#if EV_USE_INOTIFY 1701#if EV_USE_INOTIFY
1311 infy_fork (EV_A); 1702 infy_fork (EV_A);
1312#endif 1703#endif
1313 1704
1314 if (ev_is_active (&pipeev)) 1705 if (ev_is_active (&pipe_w))
1315 { 1706 {
1316 /* this "locks" the handlers against writing to the pipe */ 1707 /* this "locks" the handlers against writing to the pipe */
1317 /* while we modify the fd vars */ 1708 /* while we modify the fd vars */
1318 gotsig = 1; 1709 gotsig = 1;
1319#if EV_ASYNC_ENABLE 1710#if EV_ASYNC_ENABLE
1320 gotasync = 1; 1711 gotasync = 1;
1321#endif 1712#endif
1322 1713
1323 ev_ref (EV_A); 1714 ev_ref (EV_A);
1324 ev_io_stop (EV_A_ &pipeev); 1715 ev_io_stop (EV_A_ &pipe_w);
1325 1716
1326#if EV_USE_EVENTFD 1717#if EV_USE_EVENTFD
1327 if (evfd >= 0) 1718 if (evfd >= 0)
1328 close (evfd); 1719 close (evfd);
1329#endif 1720#endif
… …
1334 close (evpipe [1]); 1725 close (evpipe [1]);
1335 } 1726 }
1336 1727
1337 evpipe_init (EV_A); 1728 evpipe_init (EV_A);
1338 /* now iterate over everything, in case we missed something */ 1729 /* now iterate over everything, in case we missed something */
1339 pipecb (EV_A_ &pipeev, EV_READ); 1730 pipecb (EV_A_ &pipe_w, EV_READ);
1340 } 1731 }
1341 1732
1342 postfork = 0; 1733 postfork = 0;
1343} 1734}
1344 1735
1345#if EV_MULTIPLICITY 1736#if EV_MULTIPLICITY
1737
1346struct ev_loop * 1738struct ev_loop *
1347ev_loop_new (unsigned int flags) 1739ev_loop_new (unsigned int flags)
1348{ 1740{
1349 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1741 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1350 1742
1351 memset (loop, 0, sizeof (struct ev_loop)); 1743 memset (EV_A, 0, sizeof (struct ev_loop));
1352
1353 loop_init (EV_A_ flags); 1744 loop_init (EV_A_ flags);
1354 1745
1355 if (ev_backend (EV_A)) 1746 if (ev_backend (EV_A))
1356 return loop; 1747 return EV_A;
1357 1748
1358 return 0; 1749 return 0;
1359} 1750}
1360 1751
1361void 1752void
… …
1368void 1759void
1369ev_loop_fork (EV_P) 1760ev_loop_fork (EV_P)
1370{ 1761{
1371 postfork = 1; /* must be in line with ev_default_fork */ 1762 postfork = 1; /* must be in line with ev_default_fork */
1372} 1763}
1764#endif /* multiplicity */
1373 1765
1766#if EV_VERIFY
1767static void noinline
1768verify_watcher (EV_P_ W w)
1769{
1770 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1771
1772 if (w->pending)
1773 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1774}
1775
1776static void noinline
1777verify_heap (EV_P_ ANHE *heap, int N)
1778{
1779 int i;
1780
1781 for (i = HEAP0; i < N + HEAP0; ++i)
1782 {
1783 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1784 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1785 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1786
1787 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1788 }
1789}
1790
1791static void noinline
1792array_verify (EV_P_ W *ws, int cnt)
1793{
1794 while (cnt--)
1795 {
1796 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1797 verify_watcher (EV_A_ ws [cnt]);
1798 }
1799}
1800#endif
1801
1802#if EV_MINIMAL < 2
1803void
1804ev_loop_verify (EV_P)
1805{
1806#if EV_VERIFY
1807 int i;
1808 WL w;
1809
1810 assert (activecnt >= -1);
1811
1812 assert (fdchangemax >= fdchangecnt);
1813 for (i = 0; i < fdchangecnt; ++i)
1814 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1815
1816 assert (anfdmax >= 0);
1817 for (i = 0; i < anfdmax; ++i)
1818 for (w = anfds [i].head; w; w = w->next)
1819 {
1820 verify_watcher (EV_A_ (W)w);
1821 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1822 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1823 }
1824
1825 assert (timermax >= timercnt);
1826 verify_heap (EV_A_ timers, timercnt);
1827
1828#if EV_PERIODIC_ENABLE
1829 assert (periodicmax >= periodiccnt);
1830 verify_heap (EV_A_ periodics, periodiccnt);
1831#endif
1832
1833 for (i = NUMPRI; i--; )
1834 {
1835 assert (pendingmax [i] >= pendingcnt [i]);
1836#if EV_IDLE_ENABLE
1837 assert (idleall >= 0);
1838 assert (idlemax [i] >= idlecnt [i]);
1839 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1840#endif
1841 }
1842
1843#if EV_FORK_ENABLE
1844 assert (forkmax >= forkcnt);
1845 array_verify (EV_A_ (W *)forks, forkcnt);
1846#endif
1847
1848#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif
1852
1853 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt);
1855
1856 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt);
1858
1859# if 0
1860 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)
1862# endif
1863#endif
1864}
1374#endif 1865#endif
1375 1866
1376#if EV_MULTIPLICITY 1867#if EV_MULTIPLICITY
1377struct ev_loop * 1868struct ev_loop *
1378ev_default_loop_init (unsigned int flags) 1869ev_default_loop_init (unsigned int flags)
… …
1382#endif 1873#endif
1383{ 1874{
1384 if (!ev_default_loop_ptr) 1875 if (!ev_default_loop_ptr)
1385 { 1876 {
1386#if EV_MULTIPLICITY 1877#if EV_MULTIPLICITY
1387 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1878 EV_P = ev_default_loop_ptr = &default_loop_struct;
1388#else 1879#else
1389 ev_default_loop_ptr = 1; 1880 ev_default_loop_ptr = 1;
1390#endif 1881#endif
1391 1882
1392 loop_init (EV_A_ flags); 1883 loop_init (EV_A_ flags);
… …
1409 1900
1410void 1901void
1411ev_default_destroy (void) 1902ev_default_destroy (void)
1412{ 1903{
1413#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1414 struct ev_loop *loop = ev_default_loop_ptr; 1905 EV_P = ev_default_loop_ptr;
1415#endif 1906#endif
1907
1908 ev_default_loop_ptr = 0;
1416 1909
1417#ifndef _WIN32 1910#ifndef _WIN32
1418 ev_ref (EV_A); /* child watcher */ 1911 ev_ref (EV_A); /* child watcher */
1419 ev_signal_stop (EV_A_ &childev); 1912 ev_signal_stop (EV_A_ &childev);
1420#endif 1913#endif
… …
1424 1917
1425void 1918void
1426ev_default_fork (void) 1919ev_default_fork (void)
1427{ 1920{
1428#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1429 struct ev_loop *loop = ev_default_loop_ptr; 1922 EV_P = ev_default_loop_ptr;
1430#endif 1923#endif
1431 1924
1432 if (backend)
1433 postfork = 1; /* must be in line with ev_loop_fork */ 1925 postfork = 1; /* must be in line with ev_loop_fork */
1434} 1926}
1435 1927
1436/*****************************************************************************/ 1928/*****************************************************************************/
1437 1929
1438void 1930void
1439ev_invoke (EV_P_ void *w, int revents) 1931ev_invoke (EV_P_ void *w, int revents)
1440{ 1932{
1441 EV_CB_INVOKE ((W)w, revents); 1933 EV_CB_INVOKE ((W)w, revents);
1442} 1934}
1443 1935
1444void inline_speed 1936unsigned int
1445call_pending (EV_P) 1937ev_pending_count (EV_P)
1938{
1939 int pri;
1940 unsigned int count = 0;
1941
1942 for (pri = NUMPRI; pri--; )
1943 count += pendingcnt [pri];
1944
1945 return count;
1946}
1947
1948void noinline
1949ev_invoke_pending (EV_P)
1446{ 1950{
1447 int pri; 1951 int pri;
1448 1952
1449 for (pri = NUMPRI; pri--; ) 1953 for (pri = NUMPRI; pri--; )
1450 while (pendingcnt [pri]) 1954 while (pendingcnt [pri])
1451 { 1955 {
1452 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1453 1957
1454 if (expect_true (p->w))
1455 {
1456 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1958 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1959 /* ^ this is no longer true, as pending_w could be here */
1457 1960
1458 p->w->pending = 0; 1961 p->w->pending = 0;
1459 EV_CB_INVOKE (p->w, p->events); 1962 EV_CB_INVOKE (p->w, p->events);
1460 } 1963 EV_FREQUENT_CHECK;
1461 } 1964 }
1462} 1965}
1463 1966
1464void inline_size
1465timers_reify (EV_P)
1466{
1467 while (timercnt && ev_at (timers [1]) <= mn_now)
1468 {
1469 ev_timer *w = (ev_timer *)timers [1];
1470
1471 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1472
1473 /* first reschedule or stop timer */
1474 if (w->repeat)
1475 {
1476 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1477
1478 ev_at (w) += w->repeat;
1479 if (ev_at (w) < mn_now)
1480 ev_at (w) = mn_now;
1481
1482 downheap (timers, timercnt, 1);
1483 }
1484 else
1485 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1486
1487 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1488 }
1489}
1490
1491#if EV_PERIODIC_ENABLE
1492void inline_size
1493periodics_reify (EV_P)
1494{
1495 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1496 {
1497 ev_periodic *w = (ev_periodic *)periodics [1];
1498
1499 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1500
1501 /* first reschedule or stop timer */
1502 if (w->reschedule_cb)
1503 {
1504 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1505 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1506 downheap (periodics, periodiccnt, 1);
1507 }
1508 else if (w->interval)
1509 {
1510 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1512 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1513 downheap (periodics, periodiccnt, 1);
1514 }
1515 else
1516 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1517
1518 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1519 }
1520}
1521
1522static void noinline
1523periodics_reschedule (EV_P)
1524{
1525 int i;
1526
1527 /* adjust periodics after time jump */
1528 for (i = 1; i <= periodiccnt; ++i)
1529 {
1530 ev_periodic *w = (ev_periodic *)periodics [i];
1531
1532 if (w->reschedule_cb)
1533 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1534 else if (w->interval)
1535 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1536 }
1537
1538 /* now rebuild the heap */
1539 for (i = periodiccnt >> 1; i--; )
1540 downheap (periodics, periodiccnt, i);
1541}
1542#endif
1543
1544#if EV_IDLE_ENABLE 1967#if EV_IDLE_ENABLE
1545void inline_size 1968/* make idle watchers pending. this handles the "call-idle */
1969/* only when higher priorities are idle" logic */
1970inline_size void
1546idle_reify (EV_P) 1971idle_reify (EV_P)
1547{ 1972{
1548 if (expect_false (idleall)) 1973 if (expect_false (idleall))
1549 { 1974 {
1550 int pri; 1975 int pri;
… …
1562 } 1987 }
1563 } 1988 }
1564} 1989}
1565#endif 1990#endif
1566 1991
1567void inline_speed 1992/* make timers pending */
1993inline_size void
1994timers_reify (EV_P)
1995{
1996 EV_FREQUENT_CHECK;
1997
1998 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1999 {
2000 do
2001 {
2002 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2003
2004 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2005
2006 /* first reschedule or stop timer */
2007 if (w->repeat)
2008 {
2009 ev_at (w) += w->repeat;
2010 if (ev_at (w) < mn_now)
2011 ev_at (w) = mn_now;
2012
2013 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2014
2015 ANHE_at_cache (timers [HEAP0]);
2016 downheap (timers, timercnt, HEAP0);
2017 }
2018 else
2019 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2020
2021 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w);
2023 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025
2026 feed_reverse_done (EV_A_ EV_TIMEOUT);
2027 }
2028}
2029
2030#if EV_PERIODIC_ENABLE
2031/* make periodics pending */
2032inline_size void
2033periodics_reify (EV_P)
2034{
2035 EV_FREQUENT_CHECK;
2036
2037 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2038 {
2039 int feed_count = 0;
2040
2041 do
2042 {
2043 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2044
2045 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2046
2047 /* first reschedule or stop timer */
2048 if (w->reschedule_cb)
2049 {
2050 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2051
2052 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2053
2054 ANHE_at_cache (periodics [HEAP0]);
2055 downheap (periodics, periodiccnt, HEAP0);
2056 }
2057 else if (w->interval)
2058 {
2059 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2060 /* if next trigger time is not sufficiently in the future, put it there */
2061 /* this might happen because of floating point inexactness */
2062 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2063 {
2064 ev_at (w) += w->interval;
2065
2066 /* if interval is unreasonably low we might still have a time in the past */
2067 /* so correct this. this will make the periodic very inexact, but the user */
2068 /* has effectively asked to get triggered more often than possible */
2069 if (ev_at (w) < ev_rt_now)
2070 ev_at (w) = ev_rt_now;
2071 }
2072
2073 ANHE_at_cache (periodics [HEAP0]);
2074 downheap (periodics, periodiccnt, HEAP0);
2075 }
2076 else
2077 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2078
2079 EV_FREQUENT_CHECK;
2080 feed_reverse (EV_A_ (W)w);
2081 }
2082 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2083
2084 feed_reverse_done (EV_A_ EV_PERIODIC);
2085 }
2086}
2087
2088/* simply recalculate all periodics */
2089/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2090static void noinline
2091periodics_reschedule (EV_P)
2092{
2093 int i;
2094
2095 /* adjust periodics after time jump */
2096 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2097 {
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2099
2100 if (w->reschedule_cb)
2101 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2102 else if (w->interval)
2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2104
2105 ANHE_at_cache (periodics [i]);
2106 }
2107
2108 reheap (periodics, periodiccnt);
2109}
2110#endif
2111
2112/* adjust all timers by a given offset */
2113static void noinline
2114timers_reschedule (EV_P_ ev_tstamp adjust)
2115{
2116 int i;
2117
2118 for (i = 0; i < timercnt; ++i)
2119 {
2120 ANHE *he = timers + i + HEAP0;
2121 ANHE_w (*he)->at += adjust;
2122 ANHE_at_cache (*he);
2123 }
2124}
2125
2126/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */
2128inline_speed void
1568time_update (EV_P_ ev_tstamp max_block) 2129time_update (EV_P_ ev_tstamp max_block)
1569{ 2130{
1570 int i;
1571
1572#if EV_USE_MONOTONIC 2131#if EV_USE_MONOTONIC
1573 if (expect_true (have_monotonic)) 2132 if (expect_true (have_monotonic))
1574 { 2133 {
2134 int i;
1575 ev_tstamp odiff = rtmn_diff; 2135 ev_tstamp odiff = rtmn_diff;
1576 2136
1577 mn_now = get_clock (); 2137 mn_now = get_clock ();
1578 2138
1579 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2139 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1597 */ 2157 */
1598 for (i = 4; --i; ) 2158 for (i = 4; --i; )
1599 { 2159 {
1600 rtmn_diff = ev_rt_now - mn_now; 2160 rtmn_diff = ev_rt_now - mn_now;
1601 2161
1602 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2162 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1603 return; /* all is well */ 2163 return; /* all is well */
1604 2164
1605 ev_rt_now = ev_time (); 2165 ev_rt_now = ev_time ();
1606 mn_now = get_clock (); 2166 mn_now = get_clock ();
1607 now_floor = mn_now; 2167 now_floor = mn_now;
1608 } 2168 }
1609 2169
2170 /* no timer adjustment, as the monotonic clock doesn't jump */
2171 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1610# if EV_PERIODIC_ENABLE 2172# if EV_PERIODIC_ENABLE
1611 periodics_reschedule (EV_A); 2173 periodics_reschedule (EV_A);
1612# endif 2174# endif
1613 /* no timer adjustment, as the monotonic clock doesn't jump */
1614 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1615 } 2175 }
1616 else 2176 else
1617#endif 2177#endif
1618 { 2178 {
1619 ev_rt_now = ev_time (); 2179 ev_rt_now = ev_time ();
1620 2180
1621 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2181 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1622 { 2182 {
2183 /* adjust timers. this is easy, as the offset is the same for all of them */
2184 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1623#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
1624 periodics_reschedule (EV_A); 2186 periodics_reschedule (EV_A);
1625#endif 2187#endif
1626 /* adjust timers. this is easy, as the offset is the same for all of them */
1627 for (i = 1; i <= timercnt; ++i)
1628 ev_at (timers [i]) += ev_rt_now - mn_now;
1629 } 2188 }
1630 2189
1631 mn_now = ev_rt_now; 2190 mn_now = ev_rt_now;
1632 } 2191 }
1633} 2192}
1634 2193
1635void 2194void
1636ev_ref (EV_P)
1637{
1638 ++activecnt;
1639}
1640
1641void
1642ev_unref (EV_P)
1643{
1644 --activecnt;
1645}
1646
1647static int loop_done;
1648
1649void
1650ev_loop (EV_P_ int flags) 2195ev_loop (EV_P_ int flags)
1651{ 2196{
2197#if EV_MINIMAL < 2
2198 ++loop_depth;
2199#endif
2200
2201 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2202
1652 loop_done = EVUNLOOP_CANCEL; 2203 loop_done = EVUNLOOP_CANCEL;
1653 2204
1654 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2205 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1655 2206
1656 do 2207 do
1657 { 2208 {
2209#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A);
2211#endif
2212
1658#ifndef _WIN32 2213#ifndef _WIN32
1659 if (expect_false (curpid)) /* penalise the forking check even more */ 2214 if (expect_false (curpid)) /* penalise the forking check even more */
1660 if (expect_false (getpid () != curpid)) 2215 if (expect_false (getpid () != curpid))
1661 { 2216 {
1662 curpid = getpid (); 2217 curpid = getpid ();
… …
1668 /* we might have forked, so queue fork handlers */ 2223 /* we might have forked, so queue fork handlers */
1669 if (expect_false (postfork)) 2224 if (expect_false (postfork))
1670 if (forkcnt) 2225 if (forkcnt)
1671 { 2226 {
1672 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1673 call_pending (EV_A); 2228 EV_INVOKE_PENDING;
1674 } 2229 }
1675#endif 2230#endif
1676 2231
1677 /* queue prepare watchers (and execute them) */ 2232 /* queue prepare watchers (and execute them) */
1678 if (expect_false (preparecnt)) 2233 if (expect_false (preparecnt))
1679 { 2234 {
1680 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1681 call_pending (EV_A); 2236 EV_INVOKE_PENDING;
1682 } 2237 }
1683 2238
1684 if (expect_false (!activecnt)) 2239 if (expect_false (loop_done))
1685 break; 2240 break;
1686 2241
1687 /* we might have forked, so reify kernel state if necessary */ 2242 /* we might have forked, so reify kernel state if necessary */
1688 if (expect_false (postfork)) 2243 if (expect_false (postfork))
1689 loop_fork (EV_A); 2244 loop_fork (EV_A);
… …
1696 ev_tstamp waittime = 0.; 2251 ev_tstamp waittime = 0.;
1697 ev_tstamp sleeptime = 0.; 2252 ev_tstamp sleeptime = 0.;
1698 2253
1699 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1700 { 2255 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
1701 /* update time to cancel out callback processing overhead */ 2259 /* update time to cancel out callback processing overhead */
1702 time_update (EV_A_ 1e100); 2260 time_update (EV_A_ 1e100);
1703 2261
1704 waittime = MAX_BLOCKTIME; 2262 waittime = MAX_BLOCKTIME;
1705 2263
1706 if (timercnt) 2264 if (timercnt)
1707 { 2265 {
1708 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge; 2266 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1709 if (waittime > to) waittime = to; 2267 if (waittime > to) waittime = to;
1710 } 2268 }
1711 2269
1712#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
1713 if (periodiccnt) 2271 if (periodiccnt)
1714 { 2272 {
1715 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge; 2273 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1716 if (waittime > to) waittime = to; 2274 if (waittime > to) waittime = to;
1717 } 2275 }
1718#endif 2276#endif
1719 2277
2278 /* don't let timeouts decrease the waittime below timeout_blocktime */
1720 if (expect_false (waittime < timeout_blocktime)) 2279 if (expect_false (waittime < timeout_blocktime))
1721 waittime = timeout_blocktime; 2280 waittime = timeout_blocktime;
1722 2281
1723 sleeptime = waittime - backend_fudge; 2282 /* extra check because io_blocktime is commonly 0 */
1724
1725 if (expect_true (sleeptime > io_blocktime)) 2283 if (expect_false (io_blocktime))
1726 sleeptime = io_blocktime;
1727
1728 if (sleeptime)
1729 { 2284 {
2285 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2286
2287 if (sleeptime > waittime - backend_fudge)
2288 sleeptime = waittime - backend_fudge;
2289
2290 if (expect_true (sleeptime > 0.))
2291 {
1730 ev_sleep (sleeptime); 2292 ev_sleep (sleeptime);
1731 waittime -= sleeptime; 2293 waittime -= sleeptime;
2294 }
1732 } 2295 }
1733 } 2296 }
1734 2297
2298#if EV_MINIMAL < 2
1735 ++loop_count; 2299 ++loop_count;
2300#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1736 backend_poll (EV_A_ waittime); 2302 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1737 2304
1738 /* update ev_rt_now, do magic */ 2305 /* update ev_rt_now, do magic */
1739 time_update (EV_A_ waittime + sleeptime); 2306 time_update (EV_A_ waittime + sleeptime);
1740 } 2307 }
1741 2308
… …
1752 2319
1753 /* queue check watchers, to be executed first */ 2320 /* queue check watchers, to be executed first */
1754 if (expect_false (checkcnt)) 2321 if (expect_false (checkcnt))
1755 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1756 2323
1757 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1758 } 2325 }
1759 while (expect_true ( 2326 while (expect_true (
1760 activecnt 2327 activecnt
1761 && !loop_done 2328 && !loop_done
1762 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1763 )); 2330 ));
1764 2331
1765 if (loop_done == EVUNLOOP_ONE) 2332 if (loop_done == EVUNLOOP_ONE)
1766 loop_done = EVUNLOOP_CANCEL; 2333 loop_done = EVUNLOOP_CANCEL;
2334
2335#if EV_MINIMAL < 2
2336 --loop_depth;
2337#endif
1767} 2338}
1768 2339
1769void 2340void
1770ev_unloop (EV_P_ int how) 2341ev_unloop (EV_P_ int how)
1771{ 2342{
1772 loop_done = how; 2343 loop_done = how;
1773} 2344}
1774 2345
2346void
2347ev_ref (EV_P)
2348{
2349 ++activecnt;
2350}
2351
2352void
2353ev_unref (EV_P)
2354{
2355 --activecnt;
2356}
2357
2358void
2359ev_now_update (EV_P)
2360{
2361 time_update (EV_A_ 1e100);
2362}
2363
2364void
2365ev_suspend (EV_P)
2366{
2367 ev_now_update (EV_A);
2368}
2369
2370void
2371ev_resume (EV_P)
2372{
2373 ev_tstamp mn_prev = mn_now;
2374
2375 ev_now_update (EV_A);
2376 timers_reschedule (EV_A_ mn_now - mn_prev);
2377#if EV_PERIODIC_ENABLE
2378 /* TODO: really do this? */
2379 periodics_reschedule (EV_A);
2380#endif
2381}
2382
1775/*****************************************************************************/ 2383/*****************************************************************************/
2384/* singly-linked list management, used when the expected list length is short */
1776 2385
1777void inline_size 2386inline_size void
1778wlist_add (WL *head, WL elem) 2387wlist_add (WL *head, WL elem)
1779{ 2388{
1780 elem->next = *head; 2389 elem->next = *head;
1781 *head = elem; 2390 *head = elem;
1782} 2391}
1783 2392
1784void inline_size 2393inline_size void
1785wlist_del (WL *head, WL elem) 2394wlist_del (WL *head, WL elem)
1786{ 2395{
1787 while (*head) 2396 while (*head)
1788 { 2397 {
1789 if (*head == elem) 2398 if (*head == elem)
… …
1794 2403
1795 head = &(*head)->next; 2404 head = &(*head)->next;
1796 } 2405 }
1797} 2406}
1798 2407
1799void inline_speed 2408/* internal, faster, version of ev_clear_pending */
2409inline_speed void
1800clear_pending (EV_P_ W w) 2410clear_pending (EV_P_ W w)
1801{ 2411{
1802 if (w->pending) 2412 if (w->pending)
1803 { 2413 {
1804 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2414 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1805 w->pending = 0; 2415 w->pending = 0;
1806 } 2416 }
1807} 2417}
1808 2418
1809int 2419int
… …
1813 int pending = w_->pending; 2423 int pending = w_->pending;
1814 2424
1815 if (expect_true (pending)) 2425 if (expect_true (pending))
1816 { 2426 {
1817 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2427 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2428 p->w = (W)&pending_w;
1818 w_->pending = 0; 2429 w_->pending = 0;
1819 p->w = 0;
1820 return p->events; 2430 return p->events;
1821 } 2431 }
1822 else 2432 else
1823 return 0; 2433 return 0;
1824} 2434}
1825 2435
1826void inline_size 2436inline_size void
1827pri_adjust (EV_P_ W w) 2437pri_adjust (EV_P_ W w)
1828{ 2438{
1829 int pri = w->priority; 2439 int pri = ev_priority (w);
1830 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2440 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1831 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2441 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1832 w->priority = pri; 2442 ev_set_priority (w, pri);
1833} 2443}
1834 2444
1835void inline_speed 2445inline_speed void
1836ev_start (EV_P_ W w, int active) 2446ev_start (EV_P_ W w, int active)
1837{ 2447{
1838 pri_adjust (EV_A_ w); 2448 pri_adjust (EV_A_ w);
1839 w->active = active; 2449 w->active = active;
1840 ev_ref (EV_A); 2450 ev_ref (EV_A);
1841} 2451}
1842 2452
1843void inline_size 2453inline_size void
1844ev_stop (EV_P_ W w) 2454ev_stop (EV_P_ W w)
1845{ 2455{
1846 ev_unref (EV_A); 2456 ev_unref (EV_A);
1847 w->active = 0; 2457 w->active = 0;
1848} 2458}
… …
1855 int fd = w->fd; 2465 int fd = w->fd;
1856 2466
1857 if (expect_false (ev_is_active (w))) 2467 if (expect_false (ev_is_active (w)))
1858 return; 2468 return;
1859 2469
1860 assert (("ev_io_start called with negative fd", fd >= 0)); 2470 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472
2473 EV_FREQUENT_CHECK;
1861 2474
1862 ev_start (EV_A_ (W)w, 1); 2475 ev_start (EV_A_ (W)w, 1);
1863 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1864 wlist_add (&anfds[fd].head, (WL)w); 2477 wlist_add (&anfds[fd].head, (WL)w);
1865 2478
1866 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2479 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1867 w->events &= ~EV_IOFDSET; 2480 w->events &= ~EV__IOFDSET;
2481
2482 EV_FREQUENT_CHECK;
1868} 2483}
1869 2484
1870void noinline 2485void noinline
1871ev_io_stop (EV_P_ ev_io *w) 2486ev_io_stop (EV_P_ ev_io *w)
1872{ 2487{
1873 clear_pending (EV_A_ (W)w); 2488 clear_pending (EV_A_ (W)w);
1874 if (expect_false (!ev_is_active (w))) 2489 if (expect_false (!ev_is_active (w)))
1875 return; 2490 return;
1876 2491
1877 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2492 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2493
2494 EV_FREQUENT_CHECK;
1878 2495
1879 wlist_del (&anfds[w->fd].head, (WL)w); 2496 wlist_del (&anfds[w->fd].head, (WL)w);
1880 ev_stop (EV_A_ (W)w); 2497 ev_stop (EV_A_ (W)w);
1881 2498
1882 fd_change (EV_A_ w->fd, 1); 2499 fd_change (EV_A_ w->fd, 1);
2500
2501 EV_FREQUENT_CHECK;
1883} 2502}
1884 2503
1885void noinline 2504void noinline
1886ev_timer_start (EV_P_ ev_timer *w) 2505ev_timer_start (EV_P_ ev_timer *w)
1887{ 2506{
1888 if (expect_false (ev_is_active (w))) 2507 if (expect_false (ev_is_active (w)))
1889 return; 2508 return;
1890 2509
1891 ev_at (w) += mn_now; 2510 ev_at (w) += mn_now;
1892 2511
1893 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2512 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1894 2513
2514 EV_FREQUENT_CHECK;
2515
2516 ++timercnt;
1895 ev_start (EV_A_ (W)w, ++timercnt); 2517 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1896 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2); 2518 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1897 timers [timercnt] = (WT)w; 2519 ANHE_w (timers [ev_active (w)]) = (WT)w;
2520 ANHE_at_cache (timers [ev_active (w)]);
1898 upheap (timers, timercnt); 2521 upheap (timers, ev_active (w));
1899 2522
2523 EV_FREQUENT_CHECK;
2524
1900 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2525 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1901} 2526}
1902 2527
1903void noinline 2528void noinline
1904ev_timer_stop (EV_P_ ev_timer *w) 2529ev_timer_stop (EV_P_ ev_timer *w)
1905{ 2530{
1906 clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
1907 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
1908 return; 2533 return;
1909 2534
2535 EV_FREQUENT_CHECK;
2536
1910 { 2537 {
1911 int active = ev_active (w); 2538 int active = ev_active (w);
1912 2539
1913 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2540 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1914 2541
2542 --timercnt;
2543
1915 if (expect_true (active < timercnt)) 2544 if (expect_true (active < timercnt + HEAP0))
1916 { 2545 {
1917 timers [active] = timers [timercnt]; 2546 timers [active] = timers [timercnt + HEAP0];
1918 adjustheap (timers, timercnt, active); 2547 adjustheap (timers, timercnt, active);
1919 } 2548 }
1920
1921 --timercnt;
1922 } 2549 }
2550
2551 EV_FREQUENT_CHECK;
1923 2552
1924 ev_at (w) -= mn_now; 2553 ev_at (w) -= mn_now;
1925 2554
1926 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
1927} 2556}
1928 2557
1929void noinline 2558void noinline
1930ev_timer_again (EV_P_ ev_timer *w) 2559ev_timer_again (EV_P_ ev_timer *w)
1931{ 2560{
2561 EV_FREQUENT_CHECK;
2562
1932 if (ev_is_active (w)) 2563 if (ev_is_active (w))
1933 { 2564 {
1934 if (w->repeat) 2565 if (w->repeat)
1935 { 2566 {
1936 ev_at (w) = mn_now + w->repeat; 2567 ev_at (w) = mn_now + w->repeat;
2568 ANHE_at_cache (timers [ev_active (w)]);
1937 adjustheap (timers, timercnt, ev_active (w)); 2569 adjustheap (timers, timercnt, ev_active (w));
1938 } 2570 }
1939 else 2571 else
1940 ev_timer_stop (EV_A_ w); 2572 ev_timer_stop (EV_A_ w);
1941 } 2573 }
1942 else if (w->repeat) 2574 else if (w->repeat)
1943 { 2575 {
1944 ev_at (w) = w->repeat; 2576 ev_at (w) = w->repeat;
1945 ev_timer_start (EV_A_ w); 2577 ev_timer_start (EV_A_ w);
1946 } 2578 }
2579
2580 EV_FREQUENT_CHECK;
2581}
2582
2583ev_tstamp
2584ev_timer_remaining (EV_P_ ev_timer *w)
2585{
2586 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1947} 2587}
1948 2588
1949#if EV_PERIODIC_ENABLE 2589#if EV_PERIODIC_ENABLE
1950void noinline 2590void noinline
1951ev_periodic_start (EV_P_ ev_periodic *w) 2591ev_periodic_start (EV_P_ ev_periodic *w)
… …
1955 2595
1956 if (w->reschedule_cb) 2596 if (w->reschedule_cb)
1957 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2597 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1958 else if (w->interval) 2598 else if (w->interval)
1959 { 2599 {
1960 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2600 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1961 /* this formula differs from the one in periodic_reify because we do not always round up */ 2601 /* this formula differs from the one in periodic_reify because we do not always round up */
1962 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2602 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1963 } 2603 }
1964 else 2604 else
1965 ev_at (w) = w->offset; 2605 ev_at (w) = w->offset;
1966 2606
2607 EV_FREQUENT_CHECK;
2608
2609 ++periodiccnt;
1967 ev_start (EV_A_ (W)w, ++periodiccnt); 2610 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1968 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2); 2611 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1969 periodics [periodiccnt] = (WT)w; 2612 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1970 upheap (periodics, periodiccnt); 2613 ANHE_at_cache (periodics [ev_active (w)]);
2614 upheap (periodics, ev_active (w));
1971 2615
2616 EV_FREQUENT_CHECK;
2617
1972 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2618 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1973} 2619}
1974 2620
1975void noinline 2621void noinline
1976ev_periodic_stop (EV_P_ ev_periodic *w) 2622ev_periodic_stop (EV_P_ ev_periodic *w)
1977{ 2623{
1978 clear_pending (EV_A_ (W)w); 2624 clear_pending (EV_A_ (W)w);
1979 if (expect_false (!ev_is_active (w))) 2625 if (expect_false (!ev_is_active (w)))
1980 return; 2626 return;
1981 2627
2628 EV_FREQUENT_CHECK;
2629
1982 { 2630 {
1983 int active = ev_active (w); 2631 int active = ev_active (w);
1984 2632
1985 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2633 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1986 2634
2635 --periodiccnt;
2636
1987 if (expect_true (active < periodiccnt)) 2637 if (expect_true (active < periodiccnt + HEAP0))
1988 { 2638 {
1989 periodics [active] = periodics [periodiccnt]; 2639 periodics [active] = periodics [periodiccnt + HEAP0];
1990 adjustheap (periodics, periodiccnt, active); 2640 adjustheap (periodics, periodiccnt, active);
1991 } 2641 }
1992
1993 --periodiccnt;
1994 } 2642 }
2643
2644 EV_FREQUENT_CHECK;
1995 2645
1996 ev_stop (EV_A_ (W)w); 2646 ev_stop (EV_A_ (W)w);
1997} 2647}
1998 2648
1999void noinline 2649void noinline
… …
2010#endif 2660#endif
2011 2661
2012void noinline 2662void noinline
2013ev_signal_start (EV_P_ ev_signal *w) 2663ev_signal_start (EV_P_ ev_signal *w)
2014{ 2664{
2015#if EV_MULTIPLICITY
2016 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2017#endif
2018 if (expect_false (ev_is_active (w))) 2665 if (expect_false (ev_is_active (w)))
2019 return; 2666 return;
2020 2667
2021 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2022 2669
2023 evpipe_init (EV_A); 2670#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2024 2673
2674 signals [w->signum - 1].loop = EV_A;
2675#endif
2676
2677 EV_FREQUENT_CHECK;
2678
2679#if EV_USE_SIGNALFD
2680 if (sigfd == -2)
2025 { 2681 {
2026#ifndef _WIN32 2682 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2027 sigset_t full, prev; 2683 if (sigfd < 0 && errno == EINVAL)
2028 sigfillset (&full); 2684 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2029 sigprocmask (SIG_SETMASK, &full, &prev);
2030#endif
2031 2685
2032 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2686 if (sigfd >= 0)
2687 {
2688 fd_intern (sigfd); /* doing it twice will not hurt */
2033 2689
2034#ifndef _WIN32 2690 sigemptyset (&sigfd_set);
2035 sigprocmask (SIG_SETMASK, &prev, 0); 2691
2036#endif 2692 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2693 ev_set_priority (&sigfd_w, EV_MAXPRI);
2694 ev_io_start (EV_A_ &sigfd_w);
2695 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2696 }
2037 } 2697 }
2698
2699 if (sigfd >= 0)
2700 {
2701 /* TODO: check .head */
2702 sigaddset (&sigfd_set, w->signum);
2703 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2704
2705 signalfd (sigfd, &sigfd_set, 0);
2706 }
2707#endif
2038 2708
2039 ev_start (EV_A_ (W)w, 1); 2709 ev_start (EV_A_ (W)w, 1);
2040 wlist_add (&signals [w->signum - 1].head, (WL)w); 2710 wlist_add (&signals [w->signum - 1].head, (WL)w);
2041 2711
2042 if (!((WL)w)->next) 2712 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/
2715# endif
2043 { 2716 {
2044#if _WIN32 2717# if _WIN32
2045 signal (w->signum, ev_sighandler); 2718 signal (w->signum, ev_sighandler);
2046#else 2719# else
2047 struct sigaction sa; 2720 struct sigaction sa;
2721
2722 evpipe_init (EV_A);
2723
2048 sa.sa_handler = ev_sighandler; 2724 sa.sa_handler = ev_sighandler;
2049 sigfillset (&sa.sa_mask); 2725 sigfillset (&sa.sa_mask);
2050 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2726 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2051 sigaction (w->signum, &sa, 0); 2727 sigaction (w->signum, &sa, 0);
2728
2729 sigemptyset (&sa.sa_mask);
2730 sigaddset (&sa.sa_mask, w->signum);
2731 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2052#endif 2732#endif
2053 } 2733 }
2734
2735 EV_FREQUENT_CHECK;
2054} 2736}
2055 2737
2056void noinline 2738void noinline
2057ev_signal_stop (EV_P_ ev_signal *w) 2739ev_signal_stop (EV_P_ ev_signal *w)
2058{ 2740{
2059 clear_pending (EV_A_ (W)w); 2741 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w))) 2742 if (expect_false (!ev_is_active (w)))
2061 return; 2743 return;
2062 2744
2745 EV_FREQUENT_CHECK;
2746
2063 wlist_del (&signals [w->signum - 1].head, (WL)w); 2747 wlist_del (&signals [w->signum - 1].head, (WL)w);
2064 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2065 2749
2066 if (!signals [w->signum - 1].head) 2750 if (!signals [w->signum - 1].head)
2751 {
2752 #if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif
2755 #if EV_USE_SIGNALFD
2756 if (sigfd >= 0)
2757 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2759 sigdelset (&sigfd_set, w->signum);
2760 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2762 /*TODO: maybe unblock signal? */
2763 }
2764 else
2765 #endif
2067 signal (w->signum, SIG_DFL); 2766 signal (w->signum, SIG_DFL);
2767 }
2768
2769 EV_FREQUENT_CHECK;
2068} 2770}
2069 2771
2070void 2772void
2071ev_child_start (EV_P_ ev_child *w) 2773ev_child_start (EV_P_ ev_child *w)
2072{ 2774{
2073#if EV_MULTIPLICITY 2775#if EV_MULTIPLICITY
2074 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2776 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2075#endif 2777#endif
2076 if (expect_false (ev_is_active (w))) 2778 if (expect_false (ev_is_active (w)))
2077 return; 2779 return;
2078 2780
2781 EV_FREQUENT_CHECK;
2782
2079 ev_start (EV_A_ (W)w, 1); 2783 ev_start (EV_A_ (W)w, 1);
2080 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2785
2786 EV_FREQUENT_CHECK;
2081} 2787}
2082 2788
2083void 2789void
2084ev_child_stop (EV_P_ ev_child *w) 2790ev_child_stop (EV_P_ ev_child *w)
2085{ 2791{
2086 clear_pending (EV_A_ (W)w); 2792 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2793 if (expect_false (!ev_is_active (w)))
2088 return; 2794 return;
2089 2795
2796 EV_FREQUENT_CHECK;
2797
2090 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2091 ev_stop (EV_A_ (W)w); 2799 ev_stop (EV_A_ (W)w);
2800
2801 EV_FREQUENT_CHECK;
2092} 2802}
2093 2803
2094#if EV_STAT_ENABLE 2804#if EV_STAT_ENABLE
2095 2805
2096# ifdef _WIN32 2806# ifdef _WIN32
2097# undef lstat 2807# undef lstat
2098# define lstat(a,b) _stati64 (a,b) 2808# define lstat(a,b) _stati64 (a,b)
2099# endif 2809# endif
2100 2810
2101#define DEF_STAT_INTERVAL 5.0074891 2811#define DEF_STAT_INTERVAL 5.0074891
2812#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2102#define MIN_STAT_INTERVAL 0.1074891 2813#define MIN_STAT_INTERVAL 0.1074891
2103 2814
2104static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2105 2816
2106#if EV_USE_INOTIFY 2817#if EV_USE_INOTIFY
2107# define EV_INOTIFY_BUFSIZE 8192 2818# define EV_INOTIFY_BUFSIZE 8192
… …
2111{ 2822{
2112 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); 2823 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);
2113 2824
2114 if (w->wd < 0) 2825 if (w->wd < 0)
2115 { 2826 {
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2116 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2117 2829
2118 /* monitor some parent directory for speedup hints */ 2830 /* monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */
2119 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2120 { 2834 {
2121 char path [4096]; 2835 char path [4096];
2122 strcpy (path, w->path); 2836 strcpy (path, w->path);
2123 2837
… …
2126 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2840 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2127 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2841 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2128 2842
2129 char *pend = strrchr (path, '/'); 2843 char *pend = strrchr (path, '/');
2130 2844
2131 if (!pend) 2845 if (!pend || pend == path)
2132 break; /* whoops, no '/', complain to your admin */ 2846 break;
2133 2847
2134 *pend = 0; 2848 *pend = 0;
2135 w->wd = inotify_add_watch (fs_fd, path, mask); 2849 w->wd = inotify_add_watch (fs_fd, path, mask);
2136 } 2850 }
2137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2138 } 2852 }
2139 } 2853 }
2140 else
2141 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2142 2854
2143 if (w->wd >= 0) 2855 if (w->wd >= 0)
2856 {
2144 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2858
2859 /* now local changes will be tracked by inotify, but remote changes won't */
2860 /* unless the filesystem it known to be local, we therefore still poll */
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer);
2875 }
2145} 2876}
2146 2877
2147static void noinline 2878static void noinline
2148infy_del (EV_P_ ev_stat *w) 2879infy_del (EV_P_ ev_stat *w)
2149{ 2880{
… …
2163 2894
2164static void noinline 2895static void noinline
2165infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2166{ 2897{
2167 if (slot < 0) 2898 if (slot < 0)
2168 /* overflow, need to check for all hahs slots */ 2899 /* overflow, need to check for all hash slots */
2169 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2170 infy_wd (EV_A_ slot, wd, ev); 2901 infy_wd (EV_A_ slot, wd, ev);
2171 else 2902 else
2172 { 2903 {
2173 WL w_; 2904 WL w_;
… …
2179 2910
2180 if (w->wd == wd || wd == -1) 2911 if (w->wd == wd || wd == -1)
2181 { 2912 {
2182 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2183 { 2914 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2184 w->wd = -1; 2916 w->wd = -1;
2185 infy_add (EV_A_ w); /* re-add, no matter what */ 2917 infy_add (EV_A_ w); /* re-add, no matter what */
2186 } 2918 }
2187 2919
2188 stat_timer_cb (EV_A_ &w->timer, 0); 2920 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2201 2933
2202 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2203 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2935 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2204} 2936}
2205 2937
2206void inline_size 2938inline_size void
2939check_2625 (EV_P)
2940{
2941 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */
2944 struct utsname buf;
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return;
2949
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1;
2959}
2960
2961inline_size void
2207infy_init (EV_P) 2962infy_init (EV_P)
2208{ 2963{
2209 if (fs_fd != -2) 2964 if (fs_fd != -2)
2210 return; 2965 return;
2966
2967 fs_fd = -1;
2968
2969 check_2625 (EV_A);
2211 2970
2212 fs_fd = inotify_init (); 2971 fs_fd = inotify_init ();
2213 2972
2214 if (fs_fd >= 0) 2973 if (fs_fd >= 0)
2215 { 2974 {
… …
2217 ev_set_priority (&fs_w, EV_MAXPRI); 2976 ev_set_priority (&fs_w, EV_MAXPRI);
2218 ev_io_start (EV_A_ &fs_w); 2977 ev_io_start (EV_A_ &fs_w);
2219 } 2978 }
2220} 2979}
2221 2980
2222void inline_size 2981inline_size void
2223infy_fork (EV_P) 2982infy_fork (EV_P)
2224{ 2983{
2225 int slot; 2984 int slot;
2226 2985
2227 if (fs_fd < 0) 2986 if (fs_fd < 0)
… …
2243 w->wd = -1; 3002 w->wd = -1;
2244 3003
2245 if (fs_fd >= 0) 3004 if (fs_fd >= 0)
2246 infy_add (EV_A_ w); /* re-add, no matter what */ 3005 infy_add (EV_A_ w); /* re-add, no matter what */
2247 else 3006 else
2248 ev_timer_start (EV_A_ &w->timer); 3007 ev_timer_again (EV_A_ &w->timer);
2249 } 3008 }
2250
2251 } 3009 }
2252} 3010}
2253 3011
3012#endif
3013
3014#ifdef _WIN32
3015# define EV_LSTAT(p,b) _stati64 (p, b)
3016#else
3017# define EV_LSTAT(p,b) lstat (p, b)
2254#endif 3018#endif
2255 3019
2256void 3020void
2257ev_stat_stat (EV_P_ ev_stat *w) 3021ev_stat_stat (EV_P_ ev_stat *w)
2258{ 3022{
… …
2285 || w->prev.st_atime != w->attr.st_atime 3049 || w->prev.st_atime != w->attr.st_atime
2286 || w->prev.st_mtime != w->attr.st_mtime 3050 || w->prev.st_mtime != w->attr.st_mtime
2287 || w->prev.st_ctime != w->attr.st_ctime 3051 || w->prev.st_ctime != w->attr.st_ctime
2288 ) { 3052 ) {
2289 #if EV_USE_INOTIFY 3053 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0)
3055 {
2290 infy_del (EV_A_ w); 3056 infy_del (EV_A_ w);
2291 infy_add (EV_A_ w); 3057 infy_add (EV_A_ w);
2292 ev_stat_stat (EV_A_ w); /* avoid race... */ 3058 ev_stat_stat (EV_A_ w); /* avoid race... */
3059 }
2293 #endif 3060 #endif
2294 3061
2295 ev_feed_event (EV_A_ w, EV_STAT); 3062 ev_feed_event (EV_A_ w, EV_STAT);
2296 } 3063 }
2297} 3064}
… …
2300ev_stat_start (EV_P_ ev_stat *w) 3067ev_stat_start (EV_P_ ev_stat *w)
2301{ 3068{
2302 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2303 return; 3070 return;
2304 3071
2305 /* since we use memcmp, we need to clear any padding data etc. */
2306 memset (&w->prev, 0, sizeof (ev_statdata));
2307 memset (&w->attr, 0, sizeof (ev_statdata));
2308
2309 ev_stat_stat (EV_A_ w); 3072 ev_stat_stat (EV_A_ w);
2310 3073
3074 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2311 if (w->interval < MIN_STAT_INTERVAL) 3075 w->interval = MIN_STAT_INTERVAL;
2312 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2313 3076
2314 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3077 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2315 ev_set_priority (&w->timer, ev_priority (w)); 3078 ev_set_priority (&w->timer, ev_priority (w));
2316 3079
2317#if EV_USE_INOTIFY 3080#if EV_USE_INOTIFY
2318 infy_init (EV_A); 3081 infy_init (EV_A);
2319 3082
2320 if (fs_fd >= 0) 3083 if (fs_fd >= 0)
2321 infy_add (EV_A_ w); 3084 infy_add (EV_A_ w);
2322 else 3085 else
2323#endif 3086#endif
2324 ev_timer_start (EV_A_ &w->timer); 3087 ev_timer_again (EV_A_ &w->timer);
2325 3088
2326 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
3090
3091 EV_FREQUENT_CHECK;
2327} 3092}
2328 3093
2329void 3094void
2330ev_stat_stop (EV_P_ ev_stat *w) 3095ev_stat_stop (EV_P_ ev_stat *w)
2331{ 3096{
2332 clear_pending (EV_A_ (W)w); 3097 clear_pending (EV_A_ (W)w);
2333 if (expect_false (!ev_is_active (w))) 3098 if (expect_false (!ev_is_active (w)))
2334 return; 3099 return;
2335 3100
3101 EV_FREQUENT_CHECK;
3102
2336#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
2337 infy_del (EV_A_ w); 3104 infy_del (EV_A_ w);
2338#endif 3105#endif
2339 ev_timer_stop (EV_A_ &w->timer); 3106 ev_timer_stop (EV_A_ &w->timer);
2340 3107
2341 ev_stop (EV_A_ (W)w); 3108 ev_stop (EV_A_ (W)w);
3109
3110 EV_FREQUENT_CHECK;
2342} 3111}
2343#endif 3112#endif
2344 3113
2345#if EV_IDLE_ENABLE 3114#if EV_IDLE_ENABLE
2346void 3115void
… …
2348{ 3117{
2349 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
2350 return; 3119 return;
2351 3120
2352 pri_adjust (EV_A_ (W)w); 3121 pri_adjust (EV_A_ (W)w);
3122
3123 EV_FREQUENT_CHECK;
2353 3124
2354 { 3125 {
2355 int active = ++idlecnt [ABSPRI (w)]; 3126 int active = ++idlecnt [ABSPRI (w)];
2356 3127
2357 ++idleall; 3128 ++idleall;
2358 ev_start (EV_A_ (W)w, active); 3129 ev_start (EV_A_ (W)w, active);
2359 3130
2360 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3131 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2361 idles [ABSPRI (w)][active - 1] = w; 3132 idles [ABSPRI (w)][active - 1] = w;
2362 } 3133 }
3134
3135 EV_FREQUENT_CHECK;
2363} 3136}
2364 3137
2365void 3138void
2366ev_idle_stop (EV_P_ ev_idle *w) 3139ev_idle_stop (EV_P_ ev_idle *w)
2367{ 3140{
2368 clear_pending (EV_A_ (W)w); 3141 clear_pending (EV_A_ (W)w);
2369 if (expect_false (!ev_is_active (w))) 3142 if (expect_false (!ev_is_active (w)))
2370 return; 3143 return;
2371 3144
3145 EV_FREQUENT_CHECK;
3146
2372 { 3147 {
2373 int active = ev_active (w); 3148 int active = ev_active (w);
2374 3149
2375 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3150 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2376 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3151 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2377 3152
2378 ev_stop (EV_A_ (W)w); 3153 ev_stop (EV_A_ (W)w);
2379 --idleall; 3154 --idleall;
2380 } 3155 }
3156
3157 EV_FREQUENT_CHECK;
2381} 3158}
2382#endif 3159#endif
2383 3160
2384void 3161void
2385ev_prepare_start (EV_P_ ev_prepare *w) 3162ev_prepare_start (EV_P_ ev_prepare *w)
2386{ 3163{
2387 if (expect_false (ev_is_active (w))) 3164 if (expect_false (ev_is_active (w)))
2388 return; 3165 return;
3166
3167 EV_FREQUENT_CHECK;
2389 3168
2390 ev_start (EV_A_ (W)w, ++preparecnt); 3169 ev_start (EV_A_ (W)w, ++preparecnt);
2391 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3170 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2392 prepares [preparecnt - 1] = w; 3171 prepares [preparecnt - 1] = w;
3172
3173 EV_FREQUENT_CHECK;
2393} 3174}
2394 3175
2395void 3176void
2396ev_prepare_stop (EV_P_ ev_prepare *w) 3177ev_prepare_stop (EV_P_ ev_prepare *w)
2397{ 3178{
2398 clear_pending (EV_A_ (W)w); 3179 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3180 if (expect_false (!ev_is_active (w)))
2400 return; 3181 return;
2401 3182
3183 EV_FREQUENT_CHECK;
3184
2402 { 3185 {
2403 int active = ev_active (w); 3186 int active = ev_active (w);
2404 3187
2405 prepares [active - 1] = prepares [--preparecnt]; 3188 prepares [active - 1] = prepares [--preparecnt];
2406 ev_active (prepares [active - 1]) = active; 3189 ev_active (prepares [active - 1]) = active;
2407 } 3190 }
2408 3191
2409 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
2410} 3195}
2411 3196
2412void 3197void
2413ev_check_start (EV_P_ ev_check *w) 3198ev_check_start (EV_P_ ev_check *w)
2414{ 3199{
2415 if (expect_false (ev_is_active (w))) 3200 if (expect_false (ev_is_active (w)))
2416 return; 3201 return;
3202
3203 EV_FREQUENT_CHECK;
2417 3204
2418 ev_start (EV_A_ (W)w, ++checkcnt); 3205 ev_start (EV_A_ (W)w, ++checkcnt);
2419 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3206 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2420 checks [checkcnt - 1] = w; 3207 checks [checkcnt - 1] = w;
3208
3209 EV_FREQUENT_CHECK;
2421} 3210}
2422 3211
2423void 3212void
2424ev_check_stop (EV_P_ ev_check *w) 3213ev_check_stop (EV_P_ ev_check *w)
2425{ 3214{
2426 clear_pending (EV_A_ (W)w); 3215 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 3216 if (expect_false (!ev_is_active (w)))
2428 return; 3217 return;
2429 3218
3219 EV_FREQUENT_CHECK;
3220
2430 { 3221 {
2431 int active = ev_active (w); 3222 int active = ev_active (w);
2432 3223
2433 checks [active - 1] = checks [--checkcnt]; 3224 checks [active - 1] = checks [--checkcnt];
2434 ev_active (checks [active - 1]) = active; 3225 ev_active (checks [active - 1]) = active;
2435 } 3226 }
2436 3227
2437 ev_stop (EV_A_ (W)w); 3228 ev_stop (EV_A_ (W)w);
3229
3230 EV_FREQUENT_CHECK;
2438} 3231}
2439 3232
2440#if EV_EMBED_ENABLE 3233#if EV_EMBED_ENABLE
2441void noinline 3234void noinline
2442ev_embed_sweep (EV_P_ ev_embed *w) 3235ev_embed_sweep (EV_P_ ev_embed *w)
… …
2459embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2460{ 3253{
2461 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3254 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2462 3255
2463 { 3256 {
2464 struct ev_loop *loop = w->other; 3257 EV_P = w->other;
2465 3258
2466 while (fdchangecnt) 3259 while (fdchangecnt)
2467 { 3260 {
2468 fd_reify (EV_A); 3261 fd_reify (EV_A);
2469 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3262 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2470 } 3263 }
2471 } 3264 }
2472} 3265}
2473 3266
3267static void
3268embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3269{
3270 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3271
3272 ev_embed_stop (EV_A_ w);
3273
3274 {
3275 EV_P = w->other;
3276
3277 ev_loop_fork (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3279 }
3280
3281 ev_embed_start (EV_A_ w);
3282}
3283
2474#if 0 3284#if 0
2475static void 3285static void
2476embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3286embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2477{ 3287{
2478 ev_idle_stop (EV_A_ idle); 3288 ev_idle_stop (EV_A_ idle);
… …
2484{ 3294{
2485 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
2486 return; 3296 return;
2487 3297
2488 { 3298 {
2489 struct ev_loop *loop = w->other; 3299 EV_P = w->other;
2490 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3300 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2491 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3301 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2492 } 3302 }
3303
3304 EV_FREQUENT_CHECK;
2493 3305
2494 ev_set_priority (&w->io, ev_priority (w)); 3306 ev_set_priority (&w->io, ev_priority (w));
2495 ev_io_start (EV_A_ &w->io); 3307 ev_io_start (EV_A_ &w->io);
2496 3308
2497 ev_prepare_init (&w->prepare, embed_prepare_cb); 3309 ev_prepare_init (&w->prepare, embed_prepare_cb);
2498 ev_set_priority (&w->prepare, EV_MINPRI); 3310 ev_set_priority (&w->prepare, EV_MINPRI);
2499 ev_prepare_start (EV_A_ &w->prepare); 3311 ev_prepare_start (EV_A_ &w->prepare);
2500 3312
3313 ev_fork_init (&w->fork, embed_fork_cb);
3314 ev_fork_start (EV_A_ &w->fork);
3315
2501 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3316 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2502 3317
2503 ev_start (EV_A_ (W)w, 1); 3318 ev_start (EV_A_ (W)w, 1);
3319
3320 EV_FREQUENT_CHECK;
2504} 3321}
2505 3322
2506void 3323void
2507ev_embed_stop (EV_P_ ev_embed *w) 3324ev_embed_stop (EV_P_ ev_embed *w)
2508{ 3325{
2509 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2510 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2511 return; 3328 return;
2512 3329
3330 EV_FREQUENT_CHECK;
3331
2513 ev_io_stop (EV_A_ &w->io); 3332 ev_io_stop (EV_A_ &w->io);
2514 ev_prepare_stop (EV_A_ &w->prepare); 3333 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork);
2515 3335
2516 ev_stop (EV_A_ (W)w); 3336 EV_FREQUENT_CHECK;
2517} 3337}
2518#endif 3338#endif
2519 3339
2520#if EV_FORK_ENABLE 3340#if EV_FORK_ENABLE
2521void 3341void
2522ev_fork_start (EV_P_ ev_fork *w) 3342ev_fork_start (EV_P_ ev_fork *w)
2523{ 3343{
2524 if (expect_false (ev_is_active (w))) 3344 if (expect_false (ev_is_active (w)))
2525 return; 3345 return;
3346
3347 EV_FREQUENT_CHECK;
2526 3348
2527 ev_start (EV_A_ (W)w, ++forkcnt); 3349 ev_start (EV_A_ (W)w, ++forkcnt);
2528 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2529 forks [forkcnt - 1] = w; 3351 forks [forkcnt - 1] = w;
3352
3353 EV_FREQUENT_CHECK;
2530} 3354}
2531 3355
2532void 3356void
2533ev_fork_stop (EV_P_ ev_fork *w) 3357ev_fork_stop (EV_P_ ev_fork *w)
2534{ 3358{
2535 clear_pending (EV_A_ (W)w); 3359 clear_pending (EV_A_ (W)w);
2536 if (expect_false (!ev_is_active (w))) 3360 if (expect_false (!ev_is_active (w)))
2537 return; 3361 return;
2538 3362
3363 EV_FREQUENT_CHECK;
3364
2539 { 3365 {
2540 int active = ev_active (w); 3366 int active = ev_active (w);
2541 3367
2542 forks [active - 1] = forks [--forkcnt]; 3368 forks [active - 1] = forks [--forkcnt];
2543 ev_active (forks [active - 1]) = active; 3369 ev_active (forks [active - 1]) = active;
2544 } 3370 }
2545 3371
2546 ev_stop (EV_A_ (W)w); 3372 ev_stop (EV_A_ (W)w);
3373
3374 EV_FREQUENT_CHECK;
2547} 3375}
2548#endif 3376#endif
2549 3377
2550#if EV_ASYNC_ENABLE 3378#if EV_ASYNC_ENABLE
2551void 3379void
… …
2553{ 3381{
2554 if (expect_false (ev_is_active (w))) 3382 if (expect_false (ev_is_active (w)))
2555 return; 3383 return;
2556 3384
2557 evpipe_init (EV_A); 3385 evpipe_init (EV_A);
3386
3387 EV_FREQUENT_CHECK;
2558 3388
2559 ev_start (EV_A_ (W)w, ++asynccnt); 3389 ev_start (EV_A_ (W)w, ++asynccnt);
2560 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3390 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2561 asyncs [asynccnt - 1] = w; 3391 asyncs [asynccnt - 1] = w;
3392
3393 EV_FREQUENT_CHECK;
2562} 3394}
2563 3395
2564void 3396void
2565ev_async_stop (EV_P_ ev_async *w) 3397ev_async_stop (EV_P_ ev_async *w)
2566{ 3398{
2567 clear_pending (EV_A_ (W)w); 3399 clear_pending (EV_A_ (W)w);
2568 if (expect_false (!ev_is_active (w))) 3400 if (expect_false (!ev_is_active (w)))
2569 return; 3401 return;
2570 3402
3403 EV_FREQUENT_CHECK;
3404
2571 { 3405 {
2572 int active = ev_active (w); 3406 int active = ev_active (w);
2573 3407
2574 asyncs [active - 1] = asyncs [--asynccnt]; 3408 asyncs [active - 1] = asyncs [--asynccnt];
2575 ev_active (asyncs [active - 1]) = active; 3409 ev_active (asyncs [active - 1]) = active;
2576 } 3410 }
2577 3411
2578 ev_stop (EV_A_ (W)w); 3412 ev_stop (EV_A_ (W)w);
3413
3414 EV_FREQUENT_CHECK;
2579} 3415}
2580 3416
2581void 3417void
2582ev_async_send (EV_P_ ev_async *w) 3418ev_async_send (EV_P_ ev_async *w)
2583{ 3419{
… …
2600once_cb (EV_P_ struct ev_once *once, int revents) 3436once_cb (EV_P_ struct ev_once *once, int revents)
2601{ 3437{
2602 void (*cb)(int revents, void *arg) = once->cb; 3438 void (*cb)(int revents, void *arg) = once->cb;
2603 void *arg = once->arg; 3439 void *arg = once->arg;
2604 3440
2605 ev_io_stop (EV_A_ &once->io); 3441 ev_io_stop (EV_A_ &once->io);
2606 ev_timer_stop (EV_A_ &once->to); 3442 ev_timer_stop (EV_A_ &once->to);
2607 ev_free (once); 3443 ev_free (once);
2608 3444
2609 cb (revents, arg); 3445 cb (revents, arg);
2610} 3446}
2611 3447
2612static void 3448static void
2613once_cb_io (EV_P_ ev_io *w, int revents) 3449once_cb_io (EV_P_ ev_io *w, int revents)
2614{ 3450{
2615 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3451 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3452
3453 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2616} 3454}
2617 3455
2618static void 3456static void
2619once_cb_to (EV_P_ ev_timer *w, int revents) 3457once_cb_to (EV_P_ ev_timer *w, int revents)
2620{ 3458{
2621 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3459 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3460
3461 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2622} 3462}
2623 3463
2624void 3464void
2625ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3465ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2626{ 3466{
… …
2648 ev_timer_set (&once->to, timeout, 0.); 3488 ev_timer_set (&once->to, timeout, 0.);
2649 ev_timer_start (EV_A_ &once->to); 3489 ev_timer_start (EV_A_ &once->to);
2650 } 3490 }
2651} 3491}
2652 3492
3493/*****************************************************************************/
3494
3495#if EV_WALK_ENABLE
3496void
3497ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3498{
3499 int i, j;
3500 ev_watcher_list *wl, *wn;
3501
3502 if (types & (EV_IO | EV_EMBED))
3503 for (i = 0; i < anfdmax; ++i)
3504 for (wl = anfds [i].head; wl; )
3505 {
3506 wn = wl->next;
3507
3508#if EV_EMBED_ENABLE
3509 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3510 {
3511 if (types & EV_EMBED)
3512 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3513 }
3514 else
3515#endif
3516#if EV_USE_INOTIFY
3517 if (ev_cb ((ev_io *)wl) == infy_cb)
3518 ;
3519 else
3520#endif
3521 if ((ev_io *)wl != &pipe_w)
3522 if (types & EV_IO)
3523 cb (EV_A_ EV_IO, wl);
3524
3525 wl = wn;
3526 }
3527
3528 if (types & (EV_TIMER | EV_STAT))
3529 for (i = timercnt + HEAP0; i-- > HEAP0; )
3530#if EV_STAT_ENABLE
3531 /*TODO: timer is not always active*/
3532 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3533 {
3534 if (types & EV_STAT)
3535 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3536 }
3537 else
3538#endif
3539 if (types & EV_TIMER)
3540 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3541
3542#if EV_PERIODIC_ENABLE
3543 if (types & EV_PERIODIC)
3544 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3545 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3546#endif
3547
3548#if EV_IDLE_ENABLE
3549 if (types & EV_IDLE)
3550 for (j = NUMPRI; i--; )
3551 for (i = idlecnt [j]; i--; )
3552 cb (EV_A_ EV_IDLE, idles [j][i]);
3553#endif
3554
3555#if EV_FORK_ENABLE
3556 if (types & EV_FORK)
3557 for (i = forkcnt; i--; )
3558 if (ev_cb (forks [i]) != embed_fork_cb)
3559 cb (EV_A_ EV_FORK, forks [i]);
3560#endif
3561
3562#if EV_ASYNC_ENABLE
3563 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif
3567
3568 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]);
3574
3575 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]);
3578
3579 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; )
3582 {
3583 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn;
3586 }
3587
3588 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; )
3590 for (wl = childs [i]; wl; )
3591 {
3592 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn;
3595 }
3596/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598}
3599#endif
3600
2653#if EV_MULTIPLICITY 3601#if EV_MULTIPLICITY
2654 #include "ev_wrap.h" 3602 #include "ev_wrap.h"
2655#endif 3603#endif
2656 3604
2657#ifdef __cplusplus 3605#ifdef __cplusplus

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