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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.306 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
240#ifndef EV_USE_4HEAP 325#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 326# define EV_USE_4HEAP !EV_MINIMAL
242#endif 327#endif
243 328
244#ifndef EV_HEAP_CACHE_AT 329#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 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
246#endif 345#endif
247 346
248/* 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 */
249 348
250#ifndef CLOCK_MONOTONIC 349#ifndef CLOCK_MONOTONIC
… …
267# include <sys/select.h> 366# include <sys/select.h>
268# endif 367# endif
269#endif 368#endif
270 369
271#if EV_USE_INOTIFY 370#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h>
272# 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
273#endif 379#endif
274 380
275#if EV_SELECT_IS_WINSOCKET 381#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 382# include <winsock.h>
277#endif 383#endif
278 384
279#if EV_USE_EVENTFD 385#if EV_USE_EVENTFD
280/* 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 */
281# 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
282# ifdef __cplusplus 394# ifdef __cplusplus
283extern "C" { 395extern "C" {
284# endif 396# endif
285int eventfd (unsigned int initval, int flags); 397int eventfd (unsigned int initval, int flags);
286# ifdef __cplusplus 398# ifdef __cplusplus
287} 399}
288# endif 400# endif
289#endif 401#endif
290 402
403#if EV_USE_SIGNALFD
404# include <sys/signalfd.h>
405#endif
406
291/**/ 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
292 414
293/* 415/*
294 * This is used to avoid floating point rounding problems. 416 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 417 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 418 * to ensure progress, time-wise, even when rounding
… …
323# define inline_speed static noinline 445# define inline_speed static noinline
324#else 446#else
325# define inline_speed static inline 447# define inline_speed static inline
326#endif 448#endif
327 449
328#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
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 455# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
456#endif
330 457
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 458#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 459#define EMPTY2(a,b) /* used to suppress some warnings */
333 460
334typedef ev_watcher *W; 461typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 463typedef ev_watcher_time *WT;
337 464
338#define ev_active(w) ((W)(w))->active 465#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 466#define ev_at(w) ((WT)(w))->at
340 467
341#if EV_USE_MONOTONIC 468#if EV_USE_REALTIME
342/* 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 */
343/* 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
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
345#endif 476#endif
346 477
347#ifdef _WIN32 478#ifdef _WIN32
348# include "ev_win32.c" 479# include "ev_win32.c"
… …
357{ 488{
358 syserr_cb = cb; 489 syserr_cb = cb;
359} 490}
360 491
361static void noinline 492static void noinline
362syserr (const char *msg) 493ev_syserr (const char *msg)
363{ 494{
364 if (!msg) 495 if (!msg)
365 msg = "(libev) system error"; 496 msg = "(libev) system error";
366 497
367 if (syserr_cb) 498 if (syserr_cb)
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 544#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 545#define ev_free(ptr) ev_realloc ((ptr), 0)
415 546
416/*****************************************************************************/ 547/*****************************************************************************/
417 548
549/* set in reify when reification needed */
550#define EV_ANFD_REIFY 1
551
552/* file descriptor info structure */
418typedef struct 553typedef struct
419{ 554{
420 WL head; 555 WL head;
421 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 */
422 unsigned char reify; 559 unsigned char unused;
560#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif
423#if EV_SELECT_IS_WINSOCKET 563#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 564 SOCKET handle;
425#endif 565#endif
426} ANFD; 566} ANFD;
427 567
568/* stores the pending event set for a given watcher */
428typedef struct 569typedef struct
429{ 570{
430 W w; 571 W w;
431 int events; 572 int events; /* the pending event set for the given watcher */
432} ANPENDING; 573} ANPENDING;
433 574
434#if EV_USE_INOTIFY 575#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 576/* hash table entry per inotify-id */
436typedef struct 577typedef struct
… …
439} ANFS; 580} ANFS;
440#endif 581#endif
441 582
442/* Heap Entry */ 583/* Heap Entry */
443#if EV_HEAP_CACHE_AT 584#if EV_HEAP_CACHE_AT
585 /* a heap element */
444 typedef struct { 586 typedef struct {
445 ev_tstamp at; 587 ev_tstamp at;
446 WT w; 588 WT w;
447 } ANHE; 589 } ANHE;
448 590
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 591 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 592 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 593 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 594#else
595 /* a heap element */
453 typedef WT ANHE; 596 typedef WT ANHE;
454 597
455 #define ANHE_w(he) (he) 598 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 599 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 600 #define ANHE_at_cache(he)
458#endif 601#endif
459 602
460#if EV_MULTIPLICITY 603#if EV_MULTIPLICITY
461 604
462 struct ev_loop 605 struct ev_loop
… …
481 624
482 static int ev_default_loop_ptr; 625 static int ev_default_loop_ptr;
483 626
484#endif 627#endif
485 628
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
486/*****************************************************************************/ 641/*****************************************************************************/
487 642
643#ifndef EV_HAVE_EV_TIME
488ev_tstamp 644ev_tstamp
489ev_time (void) 645ev_time (void)
490{ 646{
491#if EV_USE_REALTIME 647#if EV_USE_REALTIME
648 if (expect_true (have_realtime))
649 {
492 struct timespec ts; 650 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 651 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 652 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 653 }
654#endif
655
496 struct timeval tv; 656 struct timeval tv;
497 gettimeofday (&tv, 0); 657 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 658 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 659}
660#endif
501 661
502ev_tstamp inline_size 662inline_size ev_tstamp
503get_clock (void) 663get_clock (void)
504{ 664{
505#if EV_USE_MONOTONIC 665#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 666 if (expect_true (have_monotonic))
507 { 667 {
… …
540 struct timeval tv; 700 struct timeval tv;
541 701
542 tv.tv_sec = (time_t)delay; 702 tv.tv_sec = (time_t)delay;
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544 704
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 */
545 select (0, 0, 0, 0, &tv); 708 select (0, 0, 0, 0, &tv);
546#endif 709#endif
547 } 710 }
548} 711}
549 712
550/*****************************************************************************/ 713/*****************************************************************************/
551 714
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 715#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 716
554int inline_size 717/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */
719inline_size int
555array_nextsize (int elem, int cur, int cnt) 720array_nextsize (int elem, int cur, int cnt)
556{ 721{
557 int ncur = cur + 1; 722 int ncur = cur + 1;
558 723
559 do 724 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 741array_realloc (int elem, void *base, int *cur, int cnt)
577{ 742{
578 *cur = array_nextsize (elem, *cur, cnt); 743 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 744 return ev_realloc (base, elem * *cur);
580} 745}
746
747#define array_init_zero(base,count) \
748 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 749
582#define array_needsize(type,base,cur,cnt,init) \ 750#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 751 if (expect_false ((cnt) > (cur))) \
584 { \ 752 { \
585 int ocur_ = (cur); \ 753 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 765 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 766 }
599#endif 767#endif
600 768
601#define array_free(stem, idx) \ 769#define array_free(stem, idx) \
602 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
603 771
604/*****************************************************************************/ 772/*****************************************************************************/
773
774/* dummy callback for pending events */
775static void noinline
776pendingcb (EV_P_ ev_prepare *w, int revents)
777{
778}
605 779
606void noinline 780void noinline
607ev_feed_event (EV_P_ void *w, int revents) 781ev_feed_event (EV_P_ void *w, int revents)
608{ 782{
609 W w_ = (W)w; 783 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 792 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 793 pendings [pri][w_->pending - 1].events = revents;
620 } 794 }
621} 795}
622 796
623void 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
624queue_events (EV_P_ W *events, int eventcnt, int type) 813queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 814{
626 int i; 815 int i;
627 816
628 for (i = 0; i < eventcnt; ++i) 817 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 818 ev_feed_event (EV_A_ events [i], type);
630} 819}
631 820
632/*****************************************************************************/ 821/*****************************************************************************/
633 822
634void inline_size 823inline_speed void
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed
648fd_event (EV_P_ int fd, int revents) 824fd_event_nc (EV_P_ int fd, int revents)
649{ 825{
650 ANFD *anfd = anfds + fd; 826 ANFD *anfd = anfds + fd;
651 ev_io *w; 827 ev_io *w;
652 828
653 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)
… …
657 if (ev) 833 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 834 ev_feed_event (EV_A_ (W)w, ev);
659 } 835 }
660} 836}
661 837
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
662void 849void
663ev_feed_fd_event (EV_P_ int fd, int revents) 850ev_feed_fd_event (EV_P_ int fd, int revents)
664{ 851{
665 if (fd >= 0 && fd < anfdmax) 852 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 853 fd_event_nc (EV_A_ fd, revents);
667} 854}
668 855
669void inline_size 856/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */
858inline_size void
670fd_reify (EV_P) 859fd_reify (EV_P)
671{ 860{
672 int i; 861 int i;
673 862
674 for (i = 0; i < fdchangecnt; ++i) 863 for (i = 0; i < fdchangecnt; ++i)
… …
683 events |= (unsigned char)w->events; 872 events |= (unsigned char)w->events;
684 873
685#if EV_SELECT_IS_WINSOCKET 874#if EV_SELECT_IS_WINSOCKET
686 if (events) 875 if (events)
687 { 876 {
688 unsigned long argp; 877 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE 878 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else 880 #else
692 anfd->handle = _get_osfhandle (fd); 881 anfd->handle = _get_osfhandle (fd);
693 #endif 882 #endif
694 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));
695 } 884 }
696#endif 885#endif
697 886
698 { 887 {
699 unsigned char o_events = anfd->events; 888 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify; 889 unsigned char o_reify = anfd->reify;
701 890
702 anfd->reify = 0; 891 anfd->reify = 0;
703 anfd->events = events; 892 anfd->events = events;
704 893
705 if (o_events != events || o_reify & EV_IOFDSET) 894 if (o_events != events || o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 895 backend_modify (EV_A_ fd, o_events, events);
707 } 896 }
708 } 897 }
709 898
710 fdchangecnt = 0; 899 fdchangecnt = 0;
711} 900}
712 901
713void inline_size 902/* something about the given fd changed */
903inline_size void
714fd_change (EV_P_ int fd, int flags) 904fd_change (EV_P_ int fd, int flags)
715{ 905{
716 unsigned char reify = anfds [fd].reify; 906 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 907 anfds [fd].reify |= flags;
718 908
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 912 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 913 fdchanges [fdchangecnt - 1] = fd;
724 } 914 }
725} 915}
726 916
727void inline_speed 917/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
918inline_speed void
728fd_kill (EV_P_ int fd) 919fd_kill (EV_P_ int fd)
729{ 920{
730 ev_io *w; 921 ev_io *w;
731 922
732 while ((w = (ev_io *)anfds [fd].head)) 923 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 925 ev_io_stop (EV_A_ w);
735 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);
736 } 927 }
737} 928}
738 929
739int inline_size 930/* check whether the given fd is atcually valid, for error recovery */
931inline_size int
740fd_valid (int fd) 932fd_valid (int fd)
741{ 933{
742#ifdef _WIN32 934#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 935 return _get_osfhandle (fd) != -1;
744#else 936#else
… …
752{ 944{
753 int fd; 945 int fd;
754 946
755 for (fd = 0; fd < anfdmax; ++fd) 947 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 948 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 949 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 950 fd_kill (EV_A_ fd);
759} 951}
760 952
761/* 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 */
762static void noinline 954static void noinline
… …
780 972
781 for (fd = 0; fd < anfdmax; ++fd) 973 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 974 if (anfds [fd].events)
783 { 975 {
784 anfds [fd].events = 0; 976 anfds [fd].events = 0;
977 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 979 }
787} 980}
788 981
789/*****************************************************************************/ 982/*****************************************************************************/
790 983
… …
803#if EV_USE_4HEAP 996#if EV_USE_4HEAP
804 997
805#define DHEAP 4 998#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 999#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1000#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 1001#define UPHEAP_DONE(p,k) ((p) == (k))
809/* towards the root */
810void inline_speed
811upheap (ANHE *heap, int k)
812{
813 ANHE he = heap [k];
814
815 for (;;)
816 {
817 int p = HPARENT (k);
818
819 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820 break;
821
822 heap [k] = heap [p];
823 ev_active (ANHE_w (heap [k])) = k;
824 k = p;
825 }
826
827 heap [k] = he;
828 ev_active (ANHE_w (he)) = k;
829}
830 1002
831/* away from the root */ 1003/* away from the root */
832void inline_speed 1004inline_speed void
833downheap (ANHE *heap, int N, int k) 1005downheap (ANHE *heap, int N, int k)
834{ 1006{
835 ANHE he = heap [k]; 1007 ANHE he = heap [k];
836 ANHE *E = heap + N + HEAP0; 1008 ANHE *E = heap + N + HEAP0;
837 1009
838 for (;;) 1010 for (;;)
839 { 1011 {
840 ev_tstamp minat; 1012 ev_tstamp minat;
841 ANHE *minpos; 1013 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1014 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 1015
844 // find minimum child 1016 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 1017 if (expect_true (pos + DHEAP - 1 < E))
846 { 1018 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1019 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1020 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
849 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1021 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
… …
870 1042
871 heap [k] = he; 1043 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 1044 ev_active (ANHE_w (he)) = k;
873} 1045}
874 1046
875#else // 4HEAP 1047#else /* 4HEAP */
876 1048
877#define HEAP0 1 1049#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 1050#define HPARENT(k) ((k) >> 1)
1051#define UPHEAP_DONE(p,k) (!(p))
879 1052
880/* towards the root */ 1053/* away from the root */
881void inline_speed 1054inline_speed void
882upheap (ANHE *heap, int k) 1055downheap (ANHE *heap, int N, int k)
883{ 1056{
884 ANHE he = heap [k]; 1057 ANHE he = heap [k];
885 1058
886 for (;;) 1059 for (;;)
887 { 1060 {
888 int p = HPARENT (k); 1061 int c = k << 1;
889 1062
890 /* maybe we could use a dummy element at heap [0]? */ 1063 if (c > N + HEAP0 - 1)
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break; 1064 break;
893 1065
894 heap [k] = heap [p];
895 ev_active (ANHE_w (heap [k])) = k;
896 k = p;
897 }
898
899 heap [k] = he;
900 ev_active (ANHE_w (heap [k])) = k;
901}
902
903/* away from the root */
904void inline_speed
905downheap (ANHE *heap, int N, int k)
906{
907 ANHE he = heap [k];
908
909 for (;;)
910 {
911 int c = k << 1;
912
913 if (c > N)
914 break;
915
916 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917 ? 1 : 0; 1067 ? 1 : 0;
918 1068
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 1069 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 1070 break;
921 1071
… …
928 heap [k] = he; 1078 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 1079 ev_active (ANHE_w (he)) = k;
930} 1080}
931#endif 1081#endif
932 1082
933void inline_size 1083/* towards the root */
1084inline_speed void
1085upheap (ANHE *heap, int k)
1086{
1087 ANHE he = heap [k];
1088
1089 for (;;)
1090 {
1091 int p = HPARENT (k);
1092
1093 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1094 break;
1095
1096 heap [k] = heap [p];
1097 ev_active (ANHE_w (heap [k])) = k;
1098 k = p;
1099 }
1100
1101 heap [k] = he;
1102 ev_active (ANHE_w (he)) = k;
1103}
1104
1105/* move an element suitably so it is in a correct place */
1106inline_size void
934adjustheap (ANHE *heap, int N, int k) 1107adjustheap (ANHE *heap, int N, int k)
935{ 1108{
936 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
937 upheap (heap, k); 1110 upheap (heap, k);
938 else 1111 else
939 downheap (heap, N, k); 1112 downheap (heap, N, k);
940} 1113}
941 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);
1125}
1126
942/*****************************************************************************/ 1127/*****************************************************************************/
943 1128
1129/* associate signal watchers to a signal signal */
944typedef struct 1130typedef struct
945{ 1131{
1132#if EV_MULTIPLICITY
1133 EV_P;
1134#endif
946 WL head; 1135 WL head;
947 EV_ATOMIC_T gotsig; 1136 EV_ATOMIC_T gotsig;
948} ANSIG; 1137} ANSIG;
949 1138
950static ANSIG *signals; 1139static ANSIG signals [EV_NSIG - 1];
951static int signalmax;
952
953static EV_ATOMIC_T gotsig; 1140static EV_ATOMIC_T gotsig;
954 1141
955void inline_size
956signals_init (ANSIG *base, int count)
957{
958 while (count--)
959 {
960 base->head = 0;
961 base->gotsig = 0;
962
963 ++base;
964 }
965}
966
967/*****************************************************************************/ 1142/*****************************************************************************/
968 1143
969void inline_speed 1144/* used to prepare libev internal fd's */
1145/* this is not fork-safe */
1146inline_speed void
970fd_intern (int fd) 1147fd_intern (int fd)
971{ 1148{
972#ifdef _WIN32 1149#ifdef _WIN32
973 int arg = 1; 1150 unsigned long arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else 1152#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC); 1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK); 1154 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif 1155#endif
979} 1156}
980 1157
981static void noinline 1158static void noinline
982evpipe_init (EV_P) 1159evpipe_init (EV_P)
983{ 1160{
984 if (!ev_is_active (&pipeev)) 1161 if (!ev_is_active (&pipe_w))
985 { 1162 {
986#if EV_USE_EVENTFD 1163#if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165 if (evfd < 0 && errno == EINVAL)
987 if ((evfd = eventfd (0, 0)) >= 0) 1166 evfd = eventfd (0, 0);
1167
1168 if (evfd >= 0)
988 { 1169 {
989 evpipe [0] = -1; 1170 evpipe [0] = -1;
990 fd_intern (evfd); 1171 fd_intern (evfd); /* doing it twice doesn't hurt */
991 ev_io_set (&pipeev, evfd, EV_READ); 1172 ev_io_set (&pipe_w, evfd, EV_READ);
992 } 1173 }
993 else 1174 else
994#endif 1175#endif
995 { 1176 {
996 while (pipe (evpipe)) 1177 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1178 ev_syserr ("(libev) error creating signal/async pipe");
998 1179
999 fd_intern (evpipe [0]); 1180 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1181 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1182 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002 } 1183 }
1003 1184
1004 ev_io_start (EV_A_ &pipeev); 1185 ev_io_start (EV_A_ &pipe_w);
1005 ev_unref (EV_A); /* watcher should not keep loop alive */ 1186 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 } 1187 }
1007} 1188}
1008 1189
1009void inline_size 1190inline_size void
1010evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1191evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011{ 1192{
1012 if (!*flag) 1193 if (!*flag)
1013 { 1194 {
1014 int old_errno = errno; /* save errno because write might clobber it */ 1195 int old_errno = errno; /* save errno because write might clobber it */
… …
1027 1208
1028 errno = old_errno; 1209 errno = old_errno;
1029 } 1210 }
1030} 1211}
1031 1212
1213/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */
1032static void 1215static void
1033pipecb (EV_P_ ev_io *iow, int revents) 1216pipecb (EV_P_ ev_io *iow, int revents)
1034{ 1217{
1035#if EV_USE_EVENTFD 1218#if EV_USE_EVENTFD
1036 if (evfd >= 0) 1219 if (evfd >= 0)
… …
1048 if (gotsig && ev_is_default_loop (EV_A)) 1231 if (gotsig && ev_is_default_loop (EV_A))
1049 { 1232 {
1050 int signum; 1233 int signum;
1051 gotsig = 0; 1234 gotsig = 0;
1052 1235
1053 for (signum = signalmax; signum--; ) 1236 for (signum = EV_NSIG - 1; signum--; )
1054 if (signals [signum].gotsig) 1237 if (signals [signum].gotsig)
1055 ev_feed_signal_event (EV_A_ signum + 1); 1238 ev_feed_signal_event (EV_A_ signum + 1);
1056 } 1239 }
1057 1240
1058#if EV_ASYNC_ENABLE 1241#if EV_ASYNC_ENABLE
… …
1075 1258
1076static void 1259static void
1077ev_sighandler (int signum) 1260ev_sighandler (int signum)
1078{ 1261{
1079#if EV_MULTIPLICITY 1262#if EV_MULTIPLICITY
1080 struct ev_loop *loop = &default_loop_struct; 1263 EV_P = signals [signum - 1].loop;
1081#endif 1264#endif
1082 1265
1083#if _WIN32 1266#if _WIN32
1084 signal (signum, ev_sighandler); 1267 signal (signum, ev_sighandler);
1085#endif 1268#endif
… …
1092ev_feed_signal_event (EV_P_ int signum) 1275ev_feed_signal_event (EV_P_ int signum)
1093{ 1276{
1094 WL w; 1277 WL w;
1095 1278
1096#if EV_MULTIPLICITY 1279#if EV_MULTIPLICITY
1097 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));
1098#endif 1281#endif
1282
1283 if (signum <= 0 || signum > EV_NSIG)
1284 return;
1099 1285
1100 --signum; 1286 --signum;
1101
1102 if (signum < 0 || signum >= signalmax)
1103 return;
1104 1287
1105 signals [signum].gotsig = 0; 1288 signals [signum].gotsig = 0;
1106 1289
1107 for (w = signals [signum].head; w; w = w->next) 1290 for (w = signals [signum].head; w; w = w->next)
1108 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1109} 1292}
1110 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
1111/*****************************************************************************/ 1314/*****************************************************************************/
1112 1315
1113static WL childs [EV_PID_HASHSIZE]; 1316static WL childs [EV_PID_HASHSIZE];
1114 1317
1115#ifndef _WIN32 1318#ifndef _WIN32
… …
1118 1321
1119#ifndef WIFCONTINUED 1322#ifndef WIFCONTINUED
1120# define WIFCONTINUED(status) 0 1323# define WIFCONTINUED(status) 0
1121#endif 1324#endif
1122 1325
1123void inline_speed 1326/* handle a single child status event */
1327inline_speed void
1124child_reap (EV_P_ int chain, int pid, int status) 1328child_reap (EV_P_ int chain, int pid, int status)
1125{ 1329{
1126 ev_child *w; 1330 ev_child *w;
1127 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128 1332
… …
1141 1345
1142#ifndef WCONTINUED 1346#ifndef WCONTINUED
1143# define WCONTINUED 0 1347# define WCONTINUED 0
1144#endif 1348#endif
1145 1349
1350/* called on sigchld etc., calls waitpid */
1146static void 1351static void
1147childcb (EV_P_ ev_signal *sw, int revents) 1352childcb (EV_P_ ev_signal *sw, int revents)
1148{ 1353{
1149 int pid, status; 1354 int pid, status;
1150 1355
… …
1231 /* kqueue is borked on everything but netbsd apparently */ 1436 /* kqueue is borked on everything but netbsd apparently */
1232 /* 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 */
1233 flags &= ~EVBACKEND_KQUEUE; 1438 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1439#endif
1235#ifdef __APPLE__ 1440#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1441 /* only select works correctly on that "unix-certified" platform */
1237 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 */
1238#endif 1444#endif
1239 1445
1240 return flags; 1446 return flags;
1241} 1447}
1242 1448
… …
1256ev_backend (EV_P) 1462ev_backend (EV_P)
1257{ 1463{
1258 return backend; 1464 return backend;
1259} 1465}
1260 1466
1467#if EV_MINIMAL < 2
1261unsigned int 1468unsigned int
1262ev_loop_count (EV_P) 1469ev_loop_count (EV_P)
1263{ 1470{
1264 return loop_count; 1471 return loop_count;
1265} 1472}
1266 1473
1474unsigned int
1475ev_loop_depth (EV_P)
1476{
1477 return loop_depth;
1478}
1479
1267void 1480void
1268ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1481ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1269{ 1482{
1270 io_blocktime = interval; 1483 io_blocktime = interval;
1271} 1484}
… …
1274ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1487ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275{ 1488{
1276 timeout_blocktime = interval; 1489 timeout_blocktime = interval;
1277} 1490}
1278 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 */
1279static void noinline 1517static void noinline
1280loop_init (EV_P_ unsigned int flags) 1518loop_init (EV_P_ unsigned int flags)
1281{ 1519{
1282 if (!backend) 1520 if (!backend)
1283 { 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
1284#if EV_USE_MONOTONIC 1532#if EV_USE_MONOTONIC
1533 if (!have_monotonic)
1285 { 1534 {
1286 struct timespec ts; 1535 struct timespec ts;
1536
1287 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1537 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288 have_monotonic = 1; 1538 have_monotonic = 1;
1289 } 1539 }
1290#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"));
1291 1552
1292 ev_rt_now = ev_time (); 1553 ev_rt_now = ev_time ();
1293 mn_now = get_clock (); 1554 mn_now = get_clock ();
1294 now_floor = mn_now; 1555 now_floor = mn_now;
1295 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
1296 1560
1297 io_blocktime = 0.; 1561 io_blocktime = 0.;
1298 timeout_blocktime = 0.; 1562 timeout_blocktime = 0.;
1299 backend = 0; 1563 backend = 0;
1300 backend_fd = -1; 1564 backend_fd = -1;
1301 gotasync = 0; 1565 gotasync = 0;
1302#if EV_USE_INOTIFY 1566#if EV_USE_INOTIFY
1303 fs_fd = -2; 1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1304#endif 1568#endif
1305 1569#if EV_USE_SIGNALFD
1306 /* pid check not overridable via env */ 1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1307#ifndef _WIN32
1308 if (flags & EVFLAG_FORKCHECK)
1309 curpid = getpid ();
1310#endif 1571#endif
1311
1312 if (!(flags & EVFLAG_NOENV)
1313 && !enable_secure ()
1314 && getenv ("LIBEV_FLAGS"))
1315 flags = atoi (getenv ("LIBEV_FLAGS"));
1316 1572
1317 if (!(flags & 0x0000ffffU)) 1573 if (!(flags & 0x0000ffffU))
1318 flags |= ev_recommended_backends (); 1574 flags |= ev_recommended_backends ();
1319 1575
1320#if EV_USE_PORT 1576#if EV_USE_PORT
… …
1331#endif 1587#endif
1332#if EV_USE_SELECT 1588#if EV_USE_SELECT
1333 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334#endif 1590#endif
1335 1591
1592 ev_prepare_init (&pending_w, pendingcb);
1593
1336 ev_init (&pipeev, pipecb); 1594 ev_init (&pipe_w, pipecb);
1337 ev_set_priority (&pipeev, EV_MAXPRI); 1595 ev_set_priority (&pipe_w, EV_MAXPRI);
1338 } 1596 }
1339} 1597}
1340 1598
1599/* free up a loop structure */
1341static void noinline 1600static void noinline
1342loop_destroy (EV_P) 1601loop_destroy (EV_P)
1343{ 1602{
1344 int i; 1603 int i;
1345 1604
1346 if (ev_is_active (&pipeev)) 1605 if (ev_is_active (&pipe_w))
1347 { 1606 {
1348 ev_ref (EV_A); /* signal watcher */ 1607 /*ev_ref (EV_A);*/
1349 ev_io_stop (EV_A_ &pipeev); 1608 /*ev_io_stop (EV_A_ &pipe_w);*/
1350 1609
1351#if EV_USE_EVENTFD 1610#if EV_USE_EVENTFD
1352 if (evfd >= 0) 1611 if (evfd >= 0)
1353 close (evfd); 1612 close (evfd);
1354#endif 1613#endif
… …
1358 close (evpipe [0]); 1617 close (evpipe [0]);
1359 close (evpipe [1]); 1618 close (evpipe [1]);
1360 } 1619 }
1361 } 1620 }
1362 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
1363#if EV_USE_INOTIFY 1632#if EV_USE_INOTIFY
1364 if (fs_fd >= 0) 1633 if (fs_fd >= 0)
1365 close (fs_fd); 1634 close (fs_fd);
1366#endif 1635#endif
1367 1636
… …
1390#if EV_IDLE_ENABLE 1659#if EV_IDLE_ENABLE
1391 array_free (idle, [i]); 1660 array_free (idle, [i]);
1392#endif 1661#endif
1393 } 1662 }
1394 1663
1395 ev_free (anfds); anfdmax = 0; 1664 ev_free (anfds); anfds = 0; anfdmax = 0;
1396 1665
1397 /* 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);
1398 array_free (fdchange, EMPTY); 1668 array_free (fdchange, EMPTY);
1399 array_free (timer, EMPTY); 1669 array_free (timer, EMPTY);
1400#if EV_PERIODIC_ENABLE 1670#if EV_PERIODIC_ENABLE
1401 array_free (periodic, EMPTY); 1671 array_free (periodic, EMPTY);
1402#endif 1672#endif
… …
1411 1681
1412 backend = 0; 1682 backend = 0;
1413} 1683}
1414 1684
1415#if EV_USE_INOTIFY 1685#if EV_USE_INOTIFY
1416void inline_size infy_fork (EV_P); 1686inline_size void infy_fork (EV_P);
1417#endif 1687#endif
1418 1688
1419void inline_size 1689inline_size void
1420loop_fork (EV_P) 1690loop_fork (EV_P)
1421{ 1691{
1422#if EV_USE_PORT 1692#if EV_USE_PORT
1423 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1693 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424#endif 1694#endif
… …
1430#endif 1700#endif
1431#if EV_USE_INOTIFY 1701#if EV_USE_INOTIFY
1432 infy_fork (EV_A); 1702 infy_fork (EV_A);
1433#endif 1703#endif
1434 1704
1435 if (ev_is_active (&pipeev)) 1705 if (ev_is_active (&pipe_w))
1436 { 1706 {
1437 /* this "locks" the handlers against writing to the pipe */ 1707 /* this "locks" the handlers against writing to the pipe */
1438 /* while we modify the fd vars */ 1708 /* while we modify the fd vars */
1439 gotsig = 1; 1709 gotsig = 1;
1440#if EV_ASYNC_ENABLE 1710#if EV_ASYNC_ENABLE
1441 gotasync = 1; 1711 gotasync = 1;
1442#endif 1712#endif
1443 1713
1444 ev_ref (EV_A); 1714 ev_ref (EV_A);
1445 ev_io_stop (EV_A_ &pipeev); 1715 ev_io_stop (EV_A_ &pipe_w);
1446 1716
1447#if EV_USE_EVENTFD 1717#if EV_USE_EVENTFD
1448 if (evfd >= 0) 1718 if (evfd >= 0)
1449 close (evfd); 1719 close (evfd);
1450#endif 1720#endif
… …
1455 close (evpipe [1]); 1725 close (evpipe [1]);
1456 } 1726 }
1457 1727
1458 evpipe_init (EV_A); 1728 evpipe_init (EV_A);
1459 /* now iterate over everything, in case we missed something */ 1729 /* now iterate over everything, in case we missed something */
1460 pipecb (EV_A_ &pipeev, EV_READ); 1730 pipecb (EV_A_ &pipe_w, EV_READ);
1461 } 1731 }
1462 1732
1463 postfork = 0; 1733 postfork = 0;
1464} 1734}
1465 1735
1466#if EV_MULTIPLICITY 1736#if EV_MULTIPLICITY
1737
1467struct ev_loop * 1738struct ev_loop *
1468ev_loop_new (unsigned int flags) 1739ev_loop_new (unsigned int flags)
1469{ 1740{
1470 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));
1471 1742
1472 memset (loop, 0, sizeof (struct ev_loop)); 1743 memset (EV_A, 0, sizeof (struct ev_loop));
1473
1474 loop_init (EV_A_ flags); 1744 loop_init (EV_A_ flags);
1475 1745
1476 if (ev_backend (EV_A)) 1746 if (ev_backend (EV_A))
1477 return loop; 1747 return EV_A;
1478 1748
1479 return 0; 1749 return 0;
1480} 1750}
1481 1751
1482void 1752void
… …
1488 1758
1489void 1759void
1490ev_loop_fork (EV_P) 1760ev_loop_fork (EV_P)
1491{ 1761{
1492 postfork = 1; /* must be in line with ev_default_fork */ 1762 postfork = 1; /* must be in line with ev_default_fork */
1763}
1764#endif /* multiplicity */
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
1493} 1864}
1494#endif 1865#endif
1495 1866
1496#if EV_MULTIPLICITY 1867#if EV_MULTIPLICITY
1497struct ev_loop * 1868struct ev_loop *
… …
1502#endif 1873#endif
1503{ 1874{
1504 if (!ev_default_loop_ptr) 1875 if (!ev_default_loop_ptr)
1505 { 1876 {
1506#if EV_MULTIPLICITY 1877#if EV_MULTIPLICITY
1507 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1878 EV_P = ev_default_loop_ptr = &default_loop_struct;
1508#else 1879#else
1509 ev_default_loop_ptr = 1; 1880 ev_default_loop_ptr = 1;
1510#endif 1881#endif
1511 1882
1512 loop_init (EV_A_ flags); 1883 loop_init (EV_A_ flags);
… …
1529 1900
1530void 1901void
1531ev_default_destroy (void) 1902ev_default_destroy (void)
1532{ 1903{
1533#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr; 1905 EV_P = ev_default_loop_ptr;
1535#endif 1906#endif
1907
1908 ev_default_loop_ptr = 0;
1536 1909
1537#ifndef _WIN32 1910#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */ 1911 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev); 1912 ev_signal_stop (EV_A_ &childev);
1540#endif 1913#endif
… …
1544 1917
1545void 1918void
1546ev_default_fork (void) 1919ev_default_fork (void)
1547{ 1920{
1548#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr; 1922 EV_P = ev_default_loop_ptr;
1550#endif 1923#endif
1551 1924
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 1925 postfork = 1; /* must be in line with ev_loop_fork */
1554} 1926}
1555 1927
1556/*****************************************************************************/ 1928/*****************************************************************************/
1557 1929
1558void 1930void
1559ev_invoke (EV_P_ void *w, int revents) 1931ev_invoke (EV_P_ void *w, int revents)
1560{ 1932{
1561 EV_CB_INVOKE ((W)w, revents); 1933 EV_CB_INVOKE ((W)w, revents);
1562} 1934}
1563 1935
1564void inline_speed 1936unsigned int
1565call_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)
1566{ 1950{
1567 int pri; 1951 int pri;
1568 1952
1569 for (pri = NUMPRI; pri--; ) 1953 for (pri = NUMPRI; pri--; )
1570 while (pendingcnt [pri]) 1954 while (pendingcnt [pri])
1571 { 1955 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 1957
1574 if (expect_true (p->w))
1575 {
1576 /*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 */
1577 1960
1578 p->w->pending = 0; 1961 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 1962 EV_CB_INVOKE (p->w, p->events);
1580 } 1963 EV_FREQUENT_CHECK;
1581 } 1964 }
1582} 1965}
1583 1966
1584#if EV_IDLE_ENABLE 1967#if EV_IDLE_ENABLE
1585void inline_size 1968/* make idle watchers pending. this handles the "call-idle */
1969/* only when higher priorities are idle" logic */
1970inline_size void
1586idle_reify (EV_P) 1971idle_reify (EV_P)
1587{ 1972{
1588 if (expect_false (idleall)) 1973 if (expect_false (idleall))
1589 { 1974 {
1590 int pri; 1975 int pri;
… …
1602 } 1987 }
1603 } 1988 }
1604} 1989}
1605#endif 1990#endif
1606 1991
1607void inline_size 1992/* make timers pending */
1993inline_size void
1608timers_reify (EV_P) 1994timers_reify (EV_P)
1609{ 1995{
1996 EV_FREQUENT_CHECK;
1997
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1998 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 1999 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2000 do
1613
1614 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616 /* first reschedule or stop timer */
1617 if (w->repeat)
1618 { 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 {
1619 ev_at (w) += w->repeat; 2009 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 2010 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 2011 ev_at (w) = mn_now;
1622 2012
1623 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2013 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624 2014
1625 ANHE_at_set (timers [HEAP0]); 2015 ANHE_at_cache (timers [HEAP0]);
1626 downheap (timers, timercnt, 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);
1627 } 2023 }
1628 else 2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 2025
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2026 feed_reverse_done (EV_A_ EV_TIMEOUT);
1632 } 2027 }
1633} 2028}
1634 2029
1635#if EV_PERIODIC_ENABLE 2030#if EV_PERIODIC_ENABLE
1636void inline_size 2031/* make periodics pending */
2032inline_size void
1637periodics_reify (EV_P) 2033periodics_reify (EV_P)
1638{ 2034{
2035 EV_FREQUENT_CHECK;
2036
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2037 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 2038 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2039 int feed_count = 0;
1642 2040
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2041 do
1644
1645 /* first reschedule or stop timer */
1646 if (w->reschedule_cb)
1647 { 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 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2050 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 2051
1650 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2052 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651 2053
1652 ANHE_at_set (periodics [HEAP0]); 2054 ANHE_at_cache (periodics [HEAP0]);
1653 downheap (periodics, periodiccnt, 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);
1654 } 2081 }
1655 else if (w->interval) 2082 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656 {
1657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658 /* if next trigger time is not sufficiently in the future, put it there */
1659 /* this might happen because of floating point inexactness */
1660 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661 {
1662 ev_at (w) += w->interval;
1663 2083
1664 /* if interval is unreasonably low we might still have a time in the past */
1665 /* so correct this. this will make the periodic very inexact, but the user */
1666 /* has effectively asked to get triggered more often than possible */
1667 if (ev_at (w) < ev_rt_now)
1668 ev_at (w) = ev_rt_now;
1669 }
1670
1671 ANHE_at_set (periodics [HEAP0]);
1672 downheap (periodics, periodiccnt, HEAP0);
1673 }
1674 else
1675 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2084 feed_reverse_done (EV_A_ EV_PERIODIC);
1678 } 2085 }
1679} 2086}
1680 2087
2088/* simply recalculate all periodics */
2089/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1681static void noinline 2090static void noinline
1682periodics_reschedule (EV_P) 2091periodics_reschedule (EV_P)
1683{ 2092{
1684 int i; 2093 int i;
1685 2094
… …
1691 if (w->reschedule_cb) 2100 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2101 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 2102 else if (w->interval)
1694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695 2104
1696 ANHE_at_set (periodics [i]); 2105 ANHE_at_cache (periodics [i]);
1697 } 2106 }
1698 2107
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2108 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 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
1701 for (i = 0; i < periodiccnt; ++i) 2118 for (i = 0; i < timercnt; ++i)
1702 upheap (periodics, i + HEAP0); 2119 {
2120 ANHE *he = timers + i + HEAP0;
2121 ANHE_w (*he)->at += adjust;
2122 ANHE_at_cache (*he);
2123 }
1703} 2124}
1704#endif
1705 2125
1706void inline_speed 2126/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */
2128inline_speed void
1707time_update (EV_P_ ev_tstamp max_block) 2129time_update (EV_P_ ev_tstamp max_block)
1708{ 2130{
1709 int i;
1710
1711#if EV_USE_MONOTONIC 2131#if EV_USE_MONOTONIC
1712 if (expect_true (have_monotonic)) 2132 if (expect_true (have_monotonic))
1713 { 2133 {
2134 int i;
1714 ev_tstamp odiff = rtmn_diff; 2135 ev_tstamp odiff = rtmn_diff;
1715 2136
1716 mn_now = get_clock (); 2137 mn_now = get_clock ();
1717 2138
1718 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2139 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1744 ev_rt_now = ev_time (); 2165 ev_rt_now = ev_time ();
1745 mn_now = get_clock (); 2166 mn_now = get_clock ();
1746 now_floor = mn_now; 2167 now_floor = mn_now;
1747 } 2168 }
1748 2169
2170 /* no timer adjustment, as the monotonic clock doesn't jump */
2171 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749# if EV_PERIODIC_ENABLE 2172# if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2173 periodics_reschedule (EV_A);
1751# endif 2174# endif
1752 /* no timer adjustment, as the monotonic clock doesn't jump */
1753 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754 } 2175 }
1755 else 2176 else
1756#endif 2177#endif
1757 { 2178 {
1758 ev_rt_now = ev_time (); 2179 ev_rt_now = ev_time ();
1759 2180
1760 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))
1761 { 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);
1762#if EV_PERIODIC_ENABLE 2185#if EV_PERIODIC_ENABLE
1763 periodics_reschedule (EV_A); 2186 periodics_reschedule (EV_A);
1764#endif 2187#endif
1765 /* adjust timers. this is easy, as the offset is the same for all of them */
1766 for (i = 0; i < timercnt; ++i)
1767 {
1768 ANHE *he = timers + i + HEAP0;
1769 ANHE_w (*he)->at += ev_rt_now - mn_now;
1770 ANHE_at_set (*he);
1771 }
1772 } 2188 }
1773 2189
1774 mn_now = ev_rt_now; 2190 mn_now = ev_rt_now;
1775 } 2191 }
1776} 2192}
1777 2193
1778void 2194void
1779ev_ref (EV_P)
1780{
1781 ++activecnt;
1782}
1783
1784void
1785ev_unref (EV_P)
1786{
1787 --activecnt;
1788}
1789
1790static int loop_done;
1791
1792void
1793ev_loop (EV_P_ int flags) 2195ev_loop (EV_P_ int flags)
1794{ 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
1795 loop_done = EVUNLOOP_CANCEL; 2203 loop_done = EVUNLOOP_CANCEL;
1796 2204
1797 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 */
1798 2206
1799 do 2207 do
1800 { 2208 {
2209#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A);
2211#endif
2212
1801#ifndef _WIN32 2213#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 2214 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 2215 if (expect_false (getpid () != curpid))
1804 { 2216 {
1805 curpid = getpid (); 2217 curpid = getpid ();
… …
1811 /* we might have forked, so queue fork handlers */ 2223 /* we might have forked, so queue fork handlers */
1812 if (expect_false (postfork)) 2224 if (expect_false (postfork))
1813 if (forkcnt) 2225 if (forkcnt)
1814 { 2226 {
1815 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1816 call_pending (EV_A); 2228 EV_INVOKE_PENDING;
1817 } 2229 }
1818#endif 2230#endif
1819 2231
1820 /* queue prepare watchers (and execute them) */ 2232 /* queue prepare watchers (and execute them) */
1821 if (expect_false (preparecnt)) 2233 if (expect_false (preparecnt))
1822 { 2234 {
1823 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824 call_pending (EV_A); 2236 EV_INVOKE_PENDING;
1825 } 2237 }
1826 2238
1827 if (expect_false (!activecnt)) 2239 if (expect_false (loop_done))
1828 break; 2240 break;
1829 2241
1830 /* we might have forked, so reify kernel state if necessary */ 2242 /* we might have forked, so reify kernel state if necessary */
1831 if (expect_false (postfork)) 2243 if (expect_false (postfork))
1832 loop_fork (EV_A); 2244 loop_fork (EV_A);
… …
1839 ev_tstamp waittime = 0.; 2251 ev_tstamp waittime = 0.;
1840 ev_tstamp sleeptime = 0.; 2252 ev_tstamp sleeptime = 0.;
1841 2253
1842 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1843 { 2255 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
1844 /* update time to cancel out callback processing overhead */ 2259 /* update time to cancel out callback processing overhead */
1845 time_update (EV_A_ 1e100); 2260 time_update (EV_A_ 1e100);
1846 2261
1847 waittime = MAX_BLOCKTIME; 2262 waittime = MAX_BLOCKTIME;
1848 2263
… …
1858 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2273 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1859 if (waittime > to) waittime = to; 2274 if (waittime > to) waittime = to;
1860 } 2275 }
1861#endif 2276#endif
1862 2277
2278 /* don't let timeouts decrease the waittime below timeout_blocktime */
1863 if (expect_false (waittime < timeout_blocktime)) 2279 if (expect_false (waittime < timeout_blocktime))
1864 waittime = timeout_blocktime; 2280 waittime = timeout_blocktime;
1865 2281
1866 sleeptime = waittime - backend_fudge; 2282 /* extra check because io_blocktime is commonly 0 */
1867
1868 if (expect_true (sleeptime > io_blocktime)) 2283 if (expect_false (io_blocktime))
1869 sleeptime = io_blocktime;
1870
1871 if (sleeptime)
1872 { 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 {
1873 ev_sleep (sleeptime); 2292 ev_sleep (sleeptime);
1874 waittime -= sleeptime; 2293 waittime -= sleeptime;
2294 }
1875 } 2295 }
1876 } 2296 }
1877 2297
2298#if EV_MINIMAL < 2
1878 ++loop_count; 2299 ++loop_count;
2300#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1879 backend_poll (EV_A_ waittime); 2302 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1880 2304
1881 /* update ev_rt_now, do magic */ 2305 /* update ev_rt_now, do magic */
1882 time_update (EV_A_ waittime + sleeptime); 2306 time_update (EV_A_ waittime + sleeptime);
1883 } 2307 }
1884 2308
… …
1895 2319
1896 /* queue check watchers, to be executed first */ 2320 /* queue check watchers, to be executed first */
1897 if (expect_false (checkcnt)) 2321 if (expect_false (checkcnt))
1898 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1899 2323
1900 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1901 } 2325 }
1902 while (expect_true ( 2326 while (expect_true (
1903 activecnt 2327 activecnt
1904 && !loop_done 2328 && !loop_done
1905 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1906 )); 2330 ));
1907 2331
1908 if (loop_done == EVUNLOOP_ONE) 2332 if (loop_done == EVUNLOOP_ONE)
1909 loop_done = EVUNLOOP_CANCEL; 2333 loop_done = EVUNLOOP_CANCEL;
2334
2335#if EV_MINIMAL < 2
2336 --loop_depth;
2337#endif
1910} 2338}
1911 2339
1912void 2340void
1913ev_unloop (EV_P_ int how) 2341ev_unloop (EV_P_ int how)
1914{ 2342{
1915 loop_done = how; 2343 loop_done = how;
1916} 2344}
1917 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
1918/*****************************************************************************/ 2383/*****************************************************************************/
2384/* singly-linked list management, used when the expected list length is short */
1919 2385
1920void inline_size 2386inline_size void
1921wlist_add (WL *head, WL elem) 2387wlist_add (WL *head, WL elem)
1922{ 2388{
1923 elem->next = *head; 2389 elem->next = *head;
1924 *head = elem; 2390 *head = elem;
1925} 2391}
1926 2392
1927void inline_size 2393inline_size void
1928wlist_del (WL *head, WL elem) 2394wlist_del (WL *head, WL elem)
1929{ 2395{
1930 while (*head) 2396 while (*head)
1931 { 2397 {
1932 if (*head == elem) 2398 if (*head == elem)
… …
1937 2403
1938 head = &(*head)->next; 2404 head = &(*head)->next;
1939 } 2405 }
1940} 2406}
1941 2407
1942void inline_speed 2408/* internal, faster, version of ev_clear_pending */
2409inline_speed void
1943clear_pending (EV_P_ W w) 2410clear_pending (EV_P_ W w)
1944{ 2411{
1945 if (w->pending) 2412 if (w->pending)
1946 { 2413 {
1947 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2414 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948 w->pending = 0; 2415 w->pending = 0;
1949 } 2416 }
1950} 2417}
1951 2418
1952int 2419int
… …
1956 int pending = w_->pending; 2423 int pending = w_->pending;
1957 2424
1958 if (expect_true (pending)) 2425 if (expect_true (pending))
1959 { 2426 {
1960 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2427 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2428 p->w = (W)&pending_w;
1961 w_->pending = 0; 2429 w_->pending = 0;
1962 p->w = 0;
1963 return p->events; 2430 return p->events;
1964 } 2431 }
1965 else 2432 else
1966 return 0; 2433 return 0;
1967} 2434}
1968 2435
1969void inline_size 2436inline_size void
1970pri_adjust (EV_P_ W w) 2437pri_adjust (EV_P_ W w)
1971{ 2438{
1972 int pri = w->priority; 2439 int pri = ev_priority (w);
1973 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2440 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2441 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975 w->priority = pri; 2442 ev_set_priority (w, pri);
1976} 2443}
1977 2444
1978void inline_speed 2445inline_speed void
1979ev_start (EV_P_ W w, int active) 2446ev_start (EV_P_ W w, int active)
1980{ 2447{
1981 pri_adjust (EV_A_ w); 2448 pri_adjust (EV_A_ w);
1982 w->active = active; 2449 w->active = active;
1983 ev_ref (EV_A); 2450 ev_ref (EV_A);
1984} 2451}
1985 2452
1986void inline_size 2453inline_size void
1987ev_stop (EV_P_ W w) 2454ev_stop (EV_P_ W w)
1988{ 2455{
1989 ev_unref (EV_A); 2456 ev_unref (EV_A);
1990 w->active = 0; 2457 w->active = 0;
1991} 2458}
… …
1998 int fd = w->fd; 2465 int fd = w->fd;
1999 2466
2000 if (expect_false (ev_is_active (w))) 2467 if (expect_false (ev_is_active (w)))
2001 return; 2468 return;
2002 2469
2003 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;
2004 2474
2005 ev_start (EV_A_ (W)w, 1); 2475 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2477 wlist_add (&anfds[fd].head, (WL)w);
2008 2478
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2479 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2010 w->events &= ~EV_IOFDSET; 2480 w->events &= ~EV__IOFDSET;
2481
2482 EV_FREQUENT_CHECK;
2011} 2483}
2012 2484
2013void noinline 2485void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2486ev_io_stop (EV_P_ ev_io *w)
2015{ 2487{
2016 clear_pending (EV_A_ (W)w); 2488 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2489 if (expect_false (!ev_is_active (w)))
2018 return; 2490 return;
2019 2491
2020 assert (("ev_io_stop 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;
2021 2495
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2496 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2497 ev_stop (EV_A_ (W)w);
2024 2498
2025 fd_change (EV_A_ w->fd, 1); 2499 fd_change (EV_A_ w->fd, 1);
2500
2501 EV_FREQUENT_CHECK;
2026} 2502}
2027 2503
2028void noinline 2504void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2505ev_timer_start (EV_P_ ev_timer *w)
2030{ 2506{
2031 if (expect_false (ev_is_active (w))) 2507 if (expect_false (ev_is_active (w)))
2032 return; 2508 return;
2033 2509
2034 ev_at (w) += mn_now; 2510 ev_at (w) += mn_now;
2035 2511
2036 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.));
2037 2513
2514 EV_FREQUENT_CHECK;
2515
2516 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2517 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2518 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2519 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2520 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2521 upheap (timers, ev_active (w));
2043 2522
2523 EV_FREQUENT_CHECK;
2524
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2525 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2526}
2046 2527
2047void noinline 2528void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2529ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2530{
2050 clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
2052 return; 2533 return;
2053 2534
2535 EV_FREQUENT_CHECK;
2536
2054 { 2537 {
2055 int active = ev_active (w); 2538 int active = ev_active (w);
2056 2539
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2540 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2541
2542 --timercnt;
2543
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2544 if (expect_true (active < timercnt + HEAP0))
2060 { 2545 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2546 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2547 adjustheap (timers, timercnt, active);
2063 } 2548 }
2064
2065 --timercnt;
2066 } 2549 }
2550
2551 EV_FREQUENT_CHECK;
2067 2552
2068 ev_at (w) -= mn_now; 2553 ev_at (w) -= mn_now;
2069 2554
2070 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
2071} 2556}
2072 2557
2073void noinline 2558void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2559ev_timer_again (EV_P_ ev_timer *w)
2075{ 2560{
2561 EV_FREQUENT_CHECK;
2562
2076 if (ev_is_active (w)) 2563 if (ev_is_active (w))
2077 { 2564 {
2078 if (w->repeat) 2565 if (w->repeat)
2079 { 2566 {
2080 ev_at (w) = mn_now + w->repeat; 2567 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2568 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2569 adjustheap (timers, timercnt, ev_active (w));
2083 } 2570 }
2084 else 2571 else
2085 ev_timer_stop (EV_A_ w); 2572 ev_timer_stop (EV_A_ w);
2086 } 2573 }
2087 else if (w->repeat) 2574 else if (w->repeat)
2088 { 2575 {
2089 ev_at (w) = w->repeat; 2576 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2577 ev_timer_start (EV_A_ w);
2091 } 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.);
2092} 2587}
2093 2588
2094#if EV_PERIODIC_ENABLE 2589#if EV_PERIODIC_ENABLE
2095void noinline 2590void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2591ev_periodic_start (EV_P_ ev_periodic *w)
… …
2100 2595
2101 if (w->reschedule_cb) 2596 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2597 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2598 else if (w->interval)
2104 { 2599 {
2105 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.));
2106 /* 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 */
2107 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;
2108 } 2603 }
2109 else 2604 else
2110 ev_at (w) = w->offset; 2605 ev_at (w) = w->offset;
2111 2606
2607 EV_FREQUENT_CHECK;
2608
2609 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2610 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2611 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2612 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2613 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2614 upheap (periodics, ev_active (w));
2117 2615
2616 EV_FREQUENT_CHECK;
2617
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2618 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2619}
2120 2620
2121void noinline 2621void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2622ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2623{
2124 clear_pending (EV_A_ (W)w); 2624 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2625 if (expect_false (!ev_is_active (w)))
2126 return; 2626 return;
2127 2627
2628 EV_FREQUENT_CHECK;
2629
2128 { 2630 {
2129 int active = ev_active (w); 2631 int active = ev_active (w);
2130 2632
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2633 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2634
2635 --periodiccnt;
2636
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2637 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2638 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2639 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2640 adjustheap (periodics, periodiccnt, active);
2137 } 2641 }
2138
2139 --periodiccnt;
2140 } 2642 }
2643
2644 EV_FREQUENT_CHECK;
2141 2645
2142 ev_stop (EV_A_ (W)w); 2646 ev_stop (EV_A_ (W)w);
2143} 2647}
2144 2648
2145void noinline 2649void noinline
… …
2156#endif 2660#endif
2157 2661
2158void noinline 2662void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2663ev_signal_start (EV_P_ ev_signal *w)
2160{ 2664{
2161#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif
2164 if (expect_false (ev_is_active (w))) 2665 if (expect_false (ev_is_active (w)))
2165 return; 2666 return;
2166 2667
2167 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));
2168 2669
2169 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));
2170 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)
2171 { 2681 {
2172#ifndef _WIN32 2682 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2173 sigset_t full, prev; 2683 if (sigfd < 0 && errno == EINVAL)
2174 sigfillset (&full); 2684 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2175 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif
2177 2685
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2686 if (sigfd >= 0)
2687 {
2688 fd_intern (sigfd); /* doing it twice will not hurt */
2179 2689
2180#ifndef _WIN32 2690 sigemptyset (&sigfd_set);
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2691
2182#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 }
2183 } 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
2184 2708
2185 ev_start (EV_A_ (W)w, 1); 2709 ev_start (EV_A_ (W)w, 1);
2186 wlist_add (&signals [w->signum - 1].head, (WL)w); 2710 wlist_add (&signals [w->signum - 1].head, (WL)w);
2187 2711
2188 if (!((WL)w)->next) 2712 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/
2715# endif
2189 { 2716 {
2190#if _WIN32 2717# if _WIN32
2191 signal (w->signum, ev_sighandler); 2718 signal (w->signum, ev_sighandler);
2192#else 2719# else
2193 struct sigaction sa; 2720 struct sigaction sa;
2721
2722 evpipe_init (EV_A);
2723
2194 sa.sa_handler = ev_sighandler; 2724 sa.sa_handler = ev_sighandler;
2195 sigfillset (&sa.sa_mask); 2725 sigfillset (&sa.sa_mask);
2196 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 */
2197 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);
2198#endif 2732#endif
2199 } 2733 }
2734
2735 EV_FREQUENT_CHECK;
2200} 2736}
2201 2737
2202void noinline 2738void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2739ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2740{
2205 clear_pending (EV_A_ (W)w); 2741 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2742 if (expect_false (!ev_is_active (w)))
2207 return; 2743 return;
2208 2744
2745 EV_FREQUENT_CHECK;
2746
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2747 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2211 2749
2212 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
2213 signal (w->signum, SIG_DFL); 2766 signal (w->signum, SIG_DFL);
2767 }
2768
2769 EV_FREQUENT_CHECK;
2214} 2770}
2215 2771
2216void 2772void
2217ev_child_start (EV_P_ ev_child *w) 2773ev_child_start (EV_P_ ev_child *w)
2218{ 2774{
2219#if EV_MULTIPLICITY 2775#if EV_MULTIPLICITY
2220 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));
2221#endif 2777#endif
2222 if (expect_false (ev_is_active (w))) 2778 if (expect_false (ev_is_active (w)))
2223 return; 2779 return;
2224 2780
2781 EV_FREQUENT_CHECK;
2782
2225 ev_start (EV_A_ (W)w, 1); 2783 ev_start (EV_A_ (W)w, 1);
2226 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;
2227} 2787}
2228 2788
2229void 2789void
2230ev_child_stop (EV_P_ ev_child *w) 2790ev_child_stop (EV_P_ ev_child *w)
2231{ 2791{
2232 clear_pending (EV_A_ (W)w); 2792 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 2793 if (expect_false (!ev_is_active (w)))
2234 return; 2794 return;
2235 2795
2796 EV_FREQUENT_CHECK;
2797
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 2799 ev_stop (EV_A_ (W)w);
2800
2801 EV_FREQUENT_CHECK;
2238} 2802}
2239 2803
2240#if EV_STAT_ENABLE 2804#if EV_STAT_ENABLE
2241 2805
2242# ifdef _WIN32 2806# ifdef _WIN32
2243# undef lstat 2807# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 2808# define lstat(a,b) _stati64 (a,b)
2245# endif 2809# endif
2246 2810
2247#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 */
2248#define MIN_STAT_INTERVAL 0.1074891 2813#define MIN_STAT_INTERVAL 0.1074891
2249 2814
2250static 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);
2251 2816
2252#if EV_USE_INOTIFY 2817#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 2818# define EV_INOTIFY_BUFSIZE 8192
… …
2257{ 2822{
2258 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2259 2824
2260 if (w->wd < 0) 2825 if (w->wd < 0)
2261 { 2826 {
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263 2829
2264 /* monitor some parent directory for speedup hints */ 2830 /* monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 2832 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 2834 {
2269 char path [4096]; 2835 char path [4096];
2270 strcpy (path, w->path); 2836 strcpy (path, w->path);
… …
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2840 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2841 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 2842
2277 char *pend = strrchr (path, '/'); 2843 char *pend = strrchr (path, '/');
2278 2844
2279 if (!pend) 2845 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 2846 break;
2281 2847
2282 *pend = 0; 2848 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 2849 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 2850 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 2852 }
2287 } 2853 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 2854
2291 if (w->wd >= 0) 2855 if (w->wd >= 0)
2856 {
2292 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 }
2293} 2876}
2294 2877
2295static void noinline 2878static void noinline
2296infy_del (EV_P_ ev_stat *w) 2879infy_del (EV_P_ ev_stat *w)
2297{ 2880{
… …
2311 2894
2312static void noinline 2895static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 2897{
2315 if (slot < 0) 2898 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 2899 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 2901 infy_wd (EV_A_ slot, wd, ev);
2319 else 2902 else
2320 { 2903 {
2321 WL w_; 2904 WL w_;
… …
2327 2910
2328 if (w->wd == wd || wd == -1) 2911 if (w->wd == wd || wd == -1)
2329 { 2912 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 2914 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332 w->wd = -1; 2916 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2917 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 2918 }
2335 2919
2336 stat_timer_cb (EV_A_ &w->timer, 0); 2920 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2349 2933
2350 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)
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2935 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352} 2936}
2353 2937
2354void 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
2355infy_init (EV_P) 2962infy_init (EV_P)
2356{ 2963{
2357 if (fs_fd != -2) 2964 if (fs_fd != -2)
2358 return; 2965 return;
2966
2967 fs_fd = -1;
2968
2969 check_2625 (EV_A);
2359 2970
2360 fs_fd = inotify_init (); 2971 fs_fd = inotify_init ();
2361 2972
2362 if (fs_fd >= 0) 2973 if (fs_fd >= 0)
2363 { 2974 {
… …
2365 ev_set_priority (&fs_w, EV_MAXPRI); 2976 ev_set_priority (&fs_w, EV_MAXPRI);
2366 ev_io_start (EV_A_ &fs_w); 2977 ev_io_start (EV_A_ &fs_w);
2367 } 2978 }
2368} 2979}
2369 2980
2370void inline_size 2981inline_size void
2371infy_fork (EV_P) 2982infy_fork (EV_P)
2372{ 2983{
2373 int slot; 2984 int slot;
2374 2985
2375 if (fs_fd < 0) 2986 if (fs_fd < 0)
… …
2391 w->wd = -1; 3002 w->wd = -1;
2392 3003
2393 if (fs_fd >= 0) 3004 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 3005 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 3006 else
2396 ev_timer_start (EV_A_ &w->timer); 3007 ev_timer_again (EV_A_ &w->timer);
2397 } 3008 }
2398
2399 } 3009 }
2400} 3010}
2401 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)
2402#endif 3018#endif
2403 3019
2404void 3020void
2405ev_stat_stat (EV_P_ ev_stat *w) 3021ev_stat_stat (EV_P_ ev_stat *w)
2406{ 3022{
… …
2433 || w->prev.st_atime != w->attr.st_atime 3049 || w->prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 3050 || w->prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 3051 || w->prev.st_ctime != w->attr.st_ctime
2436 ) { 3052 ) {
2437 #if EV_USE_INOTIFY 3053 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0)
3055 {
2438 infy_del (EV_A_ w); 3056 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 3057 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 3058 ev_stat_stat (EV_A_ w); /* avoid race... */
3059 }
2441 #endif 3060 #endif
2442 3061
2443 ev_feed_event (EV_A_ w, EV_STAT); 3062 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 3063 }
2445} 3064}
… …
2448ev_stat_start (EV_P_ ev_stat *w) 3067ev_stat_start (EV_P_ ev_stat *w)
2449{ 3068{
2450 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2451 return; 3070 return;
2452 3071
2453 /* since we use memcmp, we need to clear any padding data etc. */
2454 memset (&w->prev, 0, sizeof (ev_statdata));
2455 memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457 ev_stat_stat (EV_A_ w); 3072 ev_stat_stat (EV_A_ w);
2458 3073
3074 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 3075 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 3076
2462 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);
2463 ev_set_priority (&w->timer, ev_priority (w)); 3078 ev_set_priority (&w->timer, ev_priority (w));
2464 3079
2465#if EV_USE_INOTIFY 3080#if EV_USE_INOTIFY
2466 infy_init (EV_A); 3081 infy_init (EV_A);
2467 3082
2468 if (fs_fd >= 0) 3083 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 3084 infy_add (EV_A_ w);
2470 else 3085 else
2471#endif 3086#endif
2472 ev_timer_start (EV_A_ &w->timer); 3087 ev_timer_again (EV_A_ &w->timer);
2473 3088
2474 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
3090
3091 EV_FREQUENT_CHECK;
2475} 3092}
2476 3093
2477void 3094void
2478ev_stat_stop (EV_P_ ev_stat *w) 3095ev_stat_stop (EV_P_ ev_stat *w)
2479{ 3096{
2480 clear_pending (EV_A_ (W)w); 3097 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3098 if (expect_false (!ev_is_active (w)))
2482 return; 3099 return;
2483 3100
3101 EV_FREQUENT_CHECK;
3102
2484#if EV_USE_INOTIFY 3103#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 3104 infy_del (EV_A_ w);
2486#endif 3105#endif
2487 ev_timer_stop (EV_A_ &w->timer); 3106 ev_timer_stop (EV_A_ &w->timer);
2488 3107
2489 ev_stop (EV_A_ (W)w); 3108 ev_stop (EV_A_ (W)w);
3109
3110 EV_FREQUENT_CHECK;
2490} 3111}
2491#endif 3112#endif
2492 3113
2493#if EV_IDLE_ENABLE 3114#if EV_IDLE_ENABLE
2494void 3115void
… …
2496{ 3117{
2497 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
2498 return; 3119 return;
2499 3120
2500 pri_adjust (EV_A_ (W)w); 3121 pri_adjust (EV_A_ (W)w);
3122
3123 EV_FREQUENT_CHECK;
2501 3124
2502 { 3125 {
2503 int active = ++idlecnt [ABSPRI (w)]; 3126 int active = ++idlecnt [ABSPRI (w)];
2504 3127
2505 ++idleall; 3128 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 3129 ev_start (EV_A_ (W)w, active);
2507 3130
2508 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);
2509 idles [ABSPRI (w)][active - 1] = w; 3132 idles [ABSPRI (w)][active - 1] = w;
2510 } 3133 }
3134
3135 EV_FREQUENT_CHECK;
2511} 3136}
2512 3137
2513void 3138void
2514ev_idle_stop (EV_P_ ev_idle *w) 3139ev_idle_stop (EV_P_ ev_idle *w)
2515{ 3140{
2516 clear_pending (EV_A_ (W)w); 3141 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 3142 if (expect_false (!ev_is_active (w)))
2518 return; 3143 return;
2519 3144
3145 EV_FREQUENT_CHECK;
3146
2520 { 3147 {
2521 int active = ev_active (w); 3148 int active = ev_active (w);
2522 3149
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3150 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3151 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 3152
2526 ev_stop (EV_A_ (W)w); 3153 ev_stop (EV_A_ (W)w);
2527 --idleall; 3154 --idleall;
2528 } 3155 }
3156
3157 EV_FREQUENT_CHECK;
2529} 3158}
2530#endif 3159#endif
2531 3160
2532void 3161void
2533ev_prepare_start (EV_P_ ev_prepare *w) 3162ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 3163{
2535 if (expect_false (ev_is_active (w))) 3164 if (expect_false (ev_is_active (w)))
2536 return; 3165 return;
3166
3167 EV_FREQUENT_CHECK;
2537 3168
2538 ev_start (EV_A_ (W)w, ++preparecnt); 3169 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3170 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 3171 prepares [preparecnt - 1] = w;
3172
3173 EV_FREQUENT_CHECK;
2541} 3174}
2542 3175
2543void 3176void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 3177ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 3178{
2546 clear_pending (EV_A_ (W)w); 3179 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 3180 if (expect_false (!ev_is_active (w)))
2548 return; 3181 return;
2549 3182
3183 EV_FREQUENT_CHECK;
3184
2550 { 3185 {
2551 int active = ev_active (w); 3186 int active = ev_active (w);
2552 3187
2553 prepares [active - 1] = prepares [--preparecnt]; 3188 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 3189 ev_active (prepares [active - 1]) = active;
2555 } 3190 }
2556 3191
2557 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
2558} 3195}
2559 3196
2560void 3197void
2561ev_check_start (EV_P_ ev_check *w) 3198ev_check_start (EV_P_ ev_check *w)
2562{ 3199{
2563 if (expect_false (ev_is_active (w))) 3200 if (expect_false (ev_is_active (w)))
2564 return; 3201 return;
3202
3203 EV_FREQUENT_CHECK;
2565 3204
2566 ev_start (EV_A_ (W)w, ++checkcnt); 3205 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3206 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 3207 checks [checkcnt - 1] = w;
3208
3209 EV_FREQUENT_CHECK;
2569} 3210}
2570 3211
2571void 3212void
2572ev_check_stop (EV_P_ ev_check *w) 3213ev_check_stop (EV_P_ ev_check *w)
2573{ 3214{
2574 clear_pending (EV_A_ (W)w); 3215 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 3216 if (expect_false (!ev_is_active (w)))
2576 return; 3217 return;
2577 3218
3219 EV_FREQUENT_CHECK;
3220
2578 { 3221 {
2579 int active = ev_active (w); 3222 int active = ev_active (w);
2580 3223
2581 checks [active - 1] = checks [--checkcnt]; 3224 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 3225 ev_active (checks [active - 1]) = active;
2583 } 3226 }
2584 3227
2585 ev_stop (EV_A_ (W)w); 3228 ev_stop (EV_A_ (W)w);
3229
3230 EV_FREQUENT_CHECK;
2586} 3231}
2587 3232
2588#if EV_EMBED_ENABLE 3233#if EV_EMBED_ENABLE
2589void noinline 3234void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 3235ev_embed_sweep (EV_P_ ev_embed *w)
… …
2607embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2608{ 3253{
2609 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3254 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2610 3255
2611 { 3256 {
2612 struct ev_loop *loop = w->other; 3257 EV_P = w->other;
2613 3258
2614 while (fdchangecnt) 3259 while (fdchangecnt)
2615 { 3260 {
2616 fd_reify (EV_A); 3261 fd_reify (EV_A);
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3262 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618 } 3263 }
2619 } 3264 }
2620} 3265}
2621 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
2622#if 0 3284#if 0
2623static void 3285static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3286embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625{ 3287{
2626 ev_idle_stop (EV_A_ idle); 3288 ev_idle_stop (EV_A_ idle);
… …
2632{ 3294{
2633 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
2634 return; 3296 return;
2635 3297
2636 { 3298 {
2637 struct ev_loop *loop = w->other; 3299 EV_P = w->other;
2638 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 ()));
2639 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);
2640 } 3302 }
3303
3304 EV_FREQUENT_CHECK;
2641 3305
2642 ev_set_priority (&w->io, ev_priority (w)); 3306 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 3307 ev_io_start (EV_A_ &w->io);
2644 3308
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 3309 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 3310 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 3311 ev_prepare_start (EV_A_ &w->prepare);
2648 3312
3313 ev_fork_init (&w->fork, embed_fork_cb);
3314 ev_fork_start (EV_A_ &w->fork);
3315
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3316 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 3317
2651 ev_start (EV_A_ (W)w, 1); 3318 ev_start (EV_A_ (W)w, 1);
3319
3320 EV_FREQUENT_CHECK;
2652} 3321}
2653 3322
2654void 3323void
2655ev_embed_stop (EV_P_ ev_embed *w) 3324ev_embed_stop (EV_P_ ev_embed *w)
2656{ 3325{
2657 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2659 return; 3328 return;
2660 3329
3330 EV_FREQUENT_CHECK;
3331
2661 ev_io_stop (EV_A_ &w->io); 3332 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 3333 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork);
2663 3335
2664 ev_stop (EV_A_ (W)w); 3336 EV_FREQUENT_CHECK;
2665} 3337}
2666#endif 3338#endif
2667 3339
2668#if EV_FORK_ENABLE 3340#if EV_FORK_ENABLE
2669void 3341void
2670ev_fork_start (EV_P_ ev_fork *w) 3342ev_fork_start (EV_P_ ev_fork *w)
2671{ 3343{
2672 if (expect_false (ev_is_active (w))) 3344 if (expect_false (ev_is_active (w)))
2673 return; 3345 return;
3346
3347 EV_FREQUENT_CHECK;
2674 3348
2675 ev_start (EV_A_ (W)w, ++forkcnt); 3349 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3350 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 3351 forks [forkcnt - 1] = w;
3352
3353 EV_FREQUENT_CHECK;
2678} 3354}
2679 3355
2680void 3356void
2681ev_fork_stop (EV_P_ ev_fork *w) 3357ev_fork_stop (EV_P_ ev_fork *w)
2682{ 3358{
2683 clear_pending (EV_A_ (W)w); 3359 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3360 if (expect_false (!ev_is_active (w)))
2685 return; 3361 return;
2686 3362
3363 EV_FREQUENT_CHECK;
3364
2687 { 3365 {
2688 int active = ev_active (w); 3366 int active = ev_active (w);
2689 3367
2690 forks [active - 1] = forks [--forkcnt]; 3368 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3369 ev_active (forks [active - 1]) = active;
2692 } 3370 }
2693 3371
2694 ev_stop (EV_A_ (W)w); 3372 ev_stop (EV_A_ (W)w);
3373
3374 EV_FREQUENT_CHECK;
2695} 3375}
2696#endif 3376#endif
2697 3377
2698#if EV_ASYNC_ENABLE 3378#if EV_ASYNC_ENABLE
2699void 3379void
… …
2701{ 3381{
2702 if (expect_false (ev_is_active (w))) 3382 if (expect_false (ev_is_active (w)))
2703 return; 3383 return;
2704 3384
2705 evpipe_init (EV_A); 3385 evpipe_init (EV_A);
3386
3387 EV_FREQUENT_CHECK;
2706 3388
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3389 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3390 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3391 asyncs [asynccnt - 1] = w;
3392
3393 EV_FREQUENT_CHECK;
2710} 3394}
2711 3395
2712void 3396void
2713ev_async_stop (EV_P_ ev_async *w) 3397ev_async_stop (EV_P_ ev_async *w)
2714{ 3398{
2715 clear_pending (EV_A_ (W)w); 3399 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3400 if (expect_false (!ev_is_active (w)))
2717 return; 3401 return;
2718 3402
3403 EV_FREQUENT_CHECK;
3404
2719 { 3405 {
2720 int active = ev_active (w); 3406 int active = ev_active (w);
2721 3407
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3408 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3409 ev_active (asyncs [active - 1]) = active;
2724 } 3410 }
2725 3411
2726 ev_stop (EV_A_ (W)w); 3412 ev_stop (EV_A_ (W)w);
3413
3414 EV_FREQUENT_CHECK;
2727} 3415}
2728 3416
2729void 3417void
2730ev_async_send (EV_P_ ev_async *w) 3418ev_async_send (EV_P_ ev_async *w)
2731{ 3419{
… …
2748once_cb (EV_P_ struct ev_once *once, int revents) 3436once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3437{
2750 void (*cb)(int revents, void *arg) = once->cb; 3438 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3439 void *arg = once->arg;
2752 3440
2753 ev_io_stop (EV_A_ &once->io); 3441 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3442 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3443 ev_free (once);
2756 3444
2757 cb (revents, arg); 3445 cb (revents, arg);
2758} 3446}
2759 3447
2760static void 3448static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3449once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3450{
2763 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));
2764} 3454}
2765 3455
2766static void 3456static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3457once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3458{
2769 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));
2770} 3462}
2771 3463
2772void 3464void
2773ev_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)
2774{ 3466{
… …
2796 ev_timer_set (&once->to, timeout, 0.); 3488 ev_timer_set (&once->to, timeout, 0.);
2797 ev_timer_start (EV_A_ &once->to); 3489 ev_timer_start (EV_A_ &once->to);
2798 } 3490 }
2799} 3491}
2800 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
2801#if EV_MULTIPLICITY 3601#if EV_MULTIPLICITY
2802 #include "ev_wrap.h" 3602 #include "ev_wrap.h"
2803#endif 3603#endif
2804 3604
2805#ifdef __cplusplus 3605#ifdef __cplusplus

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