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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 1.305 by root, Sun Jul 19 03:49:04 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#if defined (EV_NSIG)
193/* use what's provided */
194#elif defined (NSIG)
195# define EV_NSIG (NSIG)
196#elif defined(_NSIG)
197# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX)
199# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX)
201# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX)
203# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else
213# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 64
216#endif
217
218/* Default to some arbitrary number that's big enough to get most
219 of the common signals.
220*/
221#ifndef NSIG
222# define NSIG 50
223#endif
224/* <-- NSIG logic from Configure */
225#ifndef EV_USE_CLOCK_SYSCALL
226# if __linux && __GLIBC__ >= 2
227# define EV_USE_CLOCK_SYSCALL 1
228# else
229# define EV_USE_CLOCK_SYSCALL 0
230# endif
231#endif
232
168#ifndef EV_USE_MONOTONIC 233#ifndef EV_USE_MONOTONIC
234# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
235# define EV_USE_MONOTONIC 1
236# else
169# define EV_USE_MONOTONIC 0 237# define EV_USE_MONOTONIC 0
238# endif
170#endif 239#endif
171 240
172#ifndef EV_USE_REALTIME 241#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 242# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 243#endif
175 244
176#ifndef EV_USE_NANOSLEEP 245#ifndef EV_USE_NANOSLEEP
246# if _POSIX_C_SOURCE >= 199309L
247# define EV_USE_NANOSLEEP 1
248# else
177# define EV_USE_NANOSLEEP 0 249# define EV_USE_NANOSLEEP 0
250# endif
178#endif 251#endif
179 252
180#ifndef EV_USE_SELECT 253#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 254# define EV_USE_SELECT 1
182#endif 255#endif
… …
235# else 308# else
236# define EV_USE_EVENTFD 0 309# define EV_USE_EVENTFD 0
237# endif 310# endif
238#endif 311#endif
239 312
313#ifndef EV_USE_SIGNALFD
314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
315# define EV_USE_SIGNALFD 1
316# else
317# define EV_USE_SIGNALFD 0
318# endif
319#endif
320
321#if 0 /* debugging */
322# define EV_VERIFY 3
323# define EV_USE_4HEAP 1
324# define EV_HEAP_CACHE_AT 1
325#endif
326
327#ifndef EV_VERIFY
328# define EV_VERIFY !EV_MINIMAL
329#endif
330
240#ifndef EV_USE_4HEAP 331#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 332# define EV_USE_4HEAP !EV_MINIMAL
242#endif 333#endif
243 334
244#ifndef EV_HEAP_CACHE_AT 335#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 336# define EV_HEAP_CACHE_AT !EV_MINIMAL
337#endif
338
339/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
340/* which makes programs even slower. might work on other unices, too. */
341#if EV_USE_CLOCK_SYSCALL
342# include <syscall.h>
343# ifdef SYS_clock_gettime
344# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
345# undef EV_USE_MONOTONIC
346# define EV_USE_MONOTONIC 1
347# else
348# undef EV_USE_CLOCK_SYSCALL
349# define EV_USE_CLOCK_SYSCALL 0
350# endif
246#endif 351#endif
247 352
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 353/* this block fixes any misconfiguration where we know we run into trouble otherwise */
249 354
250#ifndef CLOCK_MONOTONIC 355#ifndef CLOCK_MONOTONIC
… …
267# include <sys/select.h> 372# include <sys/select.h>
268# endif 373# endif
269#endif 374#endif
270 375
271#if EV_USE_INOTIFY 376#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h>
272# include <sys/inotify.h> 379# include <sys/inotify.h>
380/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
381# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0
384# endif
273#endif 385#endif
274 386
275#if EV_SELECT_IS_WINSOCKET 387#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 388# include <winsock.h>
277#endif 389#endif
278 390
279#if EV_USE_EVENTFD 391#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 392/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 393# include <stdint.h>
394# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK
396# endif
397# ifndef EFD_CLOEXEC
398# define EFD_CLOEXEC O_CLOEXEC
399# endif
282# ifdef __cplusplus 400# ifdef __cplusplus
283extern "C" { 401extern "C" {
284# endif 402# endif
285int eventfd (unsigned int initval, int flags); 403int eventfd (unsigned int initval, int flags);
286# ifdef __cplusplus 404# ifdef __cplusplus
287} 405}
288# endif 406# endif
289#endif 407#endif
290 408
409#if EV_USE_SIGNALFD
410# include <sys/signalfd.h>
411#endif
412
291/**/ 413/**/
414
415#if EV_VERIFY >= 3
416# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
417#else
418# define EV_FREQUENT_CHECK do { } while (0)
419#endif
292 420
293/* 421/*
294 * This is used to avoid floating point rounding problems. 422 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 423 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 424 * to ensure progress, time-wise, even when rounding
… …
323# define inline_speed static noinline 451# define inline_speed static noinline
324#else 452#else
325# define inline_speed static inline 453# define inline_speed static inline
326#endif 454#endif
327 455
328#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 456#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
457
458#if EV_MINPRI == EV_MAXPRI
459# define ABSPRI(w) (((W)w), 0)
460#else
329#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 461# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
462#endif
330 463
331#define EMPTY /* required for microsofts broken pseudo-c compiler */ 464#define EMPTY /* required for microsofts broken pseudo-c compiler */
332#define EMPTY2(a,b) /* used to suppress some warnings */ 465#define EMPTY2(a,b) /* used to suppress some warnings */
333 466
334typedef ev_watcher *W; 467typedef ev_watcher *W;
… …
336typedef ev_watcher_time *WT; 469typedef ev_watcher_time *WT;
337 470
338#define ev_active(w) ((W)(w))->active 471#define ev_active(w) ((W)(w))->active
339#define ev_at(w) ((WT)(w))->at 472#define ev_at(w) ((WT)(w))->at
340 473
341#if EV_USE_MONOTONIC 474#if EV_USE_REALTIME
342/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 475/* 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 */ 476/* giving it a reasonably high chance of working on typical architetcures */
477static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478#endif
479
480#if EV_USE_MONOTONIC
344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 481static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
345#endif 482#endif
346 483
347#ifdef _WIN32 484#ifdef _WIN32
348# include "ev_win32.c" 485# include "ev_win32.c"
… …
357{ 494{
358 syserr_cb = cb; 495 syserr_cb = cb;
359} 496}
360 497
361static void noinline 498static void noinline
362syserr (const char *msg) 499ev_syserr (const char *msg)
363{ 500{
364 if (!msg) 501 if (!msg)
365 msg = "(libev) system error"; 502 msg = "(libev) system error";
366 503
367 if (syserr_cb) 504 if (syserr_cb)
… …
413#define ev_malloc(size) ev_realloc (0, (size)) 550#define ev_malloc(size) ev_realloc (0, (size))
414#define ev_free(ptr) ev_realloc ((ptr), 0) 551#define ev_free(ptr) ev_realloc ((ptr), 0)
415 552
416/*****************************************************************************/ 553/*****************************************************************************/
417 554
555/* set in reify when reification needed */
556#define EV_ANFD_REIFY 1
557
558/* file descriptor info structure */
418typedef struct 559typedef struct
419{ 560{
420 WL head; 561 WL head;
421 unsigned char events; 562 unsigned char events; /* the events watched for */
563 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422 unsigned char reify; 565 unsigned char unused;
566#if EV_USE_EPOLL
567 unsigned int egen; /* generation counter to counter epoll bugs */
568#endif
423#if EV_SELECT_IS_WINSOCKET 569#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 570 SOCKET handle;
425#endif 571#endif
426} ANFD; 572} ANFD;
427 573
574/* stores the pending event set for a given watcher */
428typedef struct 575typedef struct
429{ 576{
430 W w; 577 W w;
431 int events; 578 int events; /* the pending event set for the given watcher */
432} ANPENDING; 579} ANPENDING;
433 580
434#if EV_USE_INOTIFY 581#if EV_USE_INOTIFY
435/* hash table entry per inotify-id */ 582/* hash table entry per inotify-id */
436typedef struct 583typedef struct
… …
439} ANFS; 586} ANFS;
440#endif 587#endif
441 588
442/* Heap Entry */ 589/* Heap Entry */
443#if EV_HEAP_CACHE_AT 590#if EV_HEAP_CACHE_AT
591 /* a heap element */
444 typedef struct { 592 typedef struct {
445 ev_tstamp at; 593 ev_tstamp at;
446 WT w; 594 WT w;
447 } ANHE; 595 } ANHE;
448 596
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 597 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 598 #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 */ 599 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 600#else
601 /* a heap element */
453 typedef WT ANHE; 602 typedef WT ANHE;
454 603
455 #define ANHE_w(he) (he) 604 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 605 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 606 #define ANHE_at_cache(he)
458#endif 607#endif
459 608
460#if EV_MULTIPLICITY 609#if EV_MULTIPLICITY
461 610
462 struct ev_loop 611 struct ev_loop
… …
481 630
482 static int ev_default_loop_ptr; 631 static int ev_default_loop_ptr;
483 632
484#endif 633#endif
485 634
635#if EV_MINIMAL < 2
636# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
637# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
638# define EV_INVOKE_PENDING invoke_cb (EV_A)
639#else
640# define EV_RELEASE_CB (void)0
641# define EV_ACQUIRE_CB (void)0
642# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
643#endif
644
645#define EVUNLOOP_RECURSE 0x80
646
486/*****************************************************************************/ 647/*****************************************************************************/
487 648
649#ifndef EV_HAVE_EV_TIME
488ev_tstamp 650ev_tstamp
489ev_time (void) 651ev_time (void)
490{ 652{
491#if EV_USE_REALTIME 653#if EV_USE_REALTIME
654 if (expect_true (have_realtime))
655 {
492 struct timespec ts; 656 struct timespec ts;
493 clock_gettime (CLOCK_REALTIME, &ts); 657 clock_gettime (CLOCK_REALTIME, &ts);
494 return ts.tv_sec + ts.tv_nsec * 1e-9; 658 return ts.tv_sec + ts.tv_nsec * 1e-9;
495#else 659 }
660#endif
661
496 struct timeval tv; 662 struct timeval tv;
497 gettimeofday (&tv, 0); 663 gettimeofday (&tv, 0);
498 return tv.tv_sec + tv.tv_usec * 1e-6; 664 return tv.tv_sec + tv.tv_usec * 1e-6;
499#endif
500} 665}
666#endif
501 667
502ev_tstamp inline_size 668inline_size ev_tstamp
503get_clock (void) 669get_clock (void)
504{ 670{
505#if EV_USE_MONOTONIC 671#if EV_USE_MONOTONIC
506 if (expect_true (have_monotonic)) 672 if (expect_true (have_monotonic))
507 { 673 {
… …
540 struct timeval tv; 706 struct timeval tv;
541 707
542 tv.tv_sec = (time_t)delay; 708 tv.tv_sec = (time_t)delay;
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 709 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544 710
711 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
712 /* something not guaranteed by newer posix versions, but guaranteed */
713 /* by older ones */
545 select (0, 0, 0, 0, &tv); 714 select (0, 0, 0, 0, &tv);
546#endif 715#endif
547 } 716 }
548} 717}
549 718
550/*****************************************************************************/ 719/*****************************************************************************/
551 720
552#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 721#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553 722
554int inline_size 723/* find a suitable new size for the given array, */
724/* hopefully by rounding to a ncie-to-malloc size */
725inline_size int
555array_nextsize (int elem, int cur, int cnt) 726array_nextsize (int elem, int cur, int cnt)
556{ 727{
557 int ncur = cur + 1; 728 int ncur = cur + 1;
558 729
559 do 730 do
… …
576array_realloc (int elem, void *base, int *cur, int cnt) 747array_realloc (int elem, void *base, int *cur, int cnt)
577{ 748{
578 *cur = array_nextsize (elem, *cur, cnt); 749 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 750 return ev_realloc (base, elem * *cur);
580} 751}
752
753#define array_init_zero(base,count) \
754 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 755
582#define array_needsize(type,base,cur,cnt,init) \ 756#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 757 if (expect_false ((cnt) > (cur))) \
584 { \ 758 { \
585 int ocur_ = (cur); \ 759 int ocur_ = (cur); \
… …
597 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 771 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598 } 772 }
599#endif 773#endif
600 774
601#define array_free(stem, idx) \ 775#define array_free(stem, idx) \
602 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 776 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603 777
604/*****************************************************************************/ 778/*****************************************************************************/
779
780/* dummy callback for pending events */
781static void noinline
782pendingcb (EV_P_ ev_prepare *w, int revents)
783{
784}
605 785
606void noinline 786void noinline
607ev_feed_event (EV_P_ void *w, int revents) 787ev_feed_event (EV_P_ void *w, int revents)
608{ 788{
609 W w_ = (W)w; 789 W w_ = (W)w;
… …
618 pendings [pri][w_->pending - 1].w = w_; 798 pendings [pri][w_->pending - 1].w = w_;
619 pendings [pri][w_->pending - 1].events = revents; 799 pendings [pri][w_->pending - 1].events = revents;
620 } 800 }
621} 801}
622 802
623void inline_speed 803inline_speed void
804feed_reverse (EV_P_ W w)
805{
806 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
807 rfeeds [rfeedcnt++] = w;
808}
809
810inline_size void
811feed_reverse_done (EV_P_ int revents)
812{
813 do
814 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
815 while (rfeedcnt);
816}
817
818inline_speed void
624queue_events (EV_P_ W *events, int eventcnt, int type) 819queue_events (EV_P_ W *events, int eventcnt, int type)
625{ 820{
626 int i; 821 int i;
627 822
628 for (i = 0; i < eventcnt; ++i) 823 for (i = 0; i < eventcnt; ++i)
629 ev_feed_event (EV_A_ events [i], type); 824 ev_feed_event (EV_A_ events [i], type);
630} 825}
631 826
632/*****************************************************************************/ 827/*****************************************************************************/
633 828
634void inline_size 829inline_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) 830fd_event_nc (EV_P_ int fd, int revents)
649{ 831{
650 ANFD *anfd = anfds + fd; 832 ANFD *anfd = anfds + fd;
651 ev_io *w; 833 ev_io *w;
652 834
653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 835 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
657 if (ev) 839 if (ev)
658 ev_feed_event (EV_A_ (W)w, ev); 840 ev_feed_event (EV_A_ (W)w, ev);
659 } 841 }
660} 842}
661 843
844/* do not submit kernel events for fds that have reify set */
845/* because that means they changed while we were polling for new events */
846inline_speed void
847fd_event (EV_P_ int fd, int revents)
848{
849 ANFD *anfd = anfds + fd;
850
851 if (expect_true (!anfd->reify))
852 fd_event_nc (EV_A_ fd, revents);
853}
854
662void 855void
663ev_feed_fd_event (EV_P_ int fd, int revents) 856ev_feed_fd_event (EV_P_ int fd, int revents)
664{ 857{
665 if (fd >= 0 && fd < anfdmax) 858 if (fd >= 0 && fd < anfdmax)
666 fd_event (EV_A_ fd, revents); 859 fd_event_nc (EV_A_ fd, revents);
667} 860}
668 861
669void inline_size 862/* make sure the external fd watch events are in-sync */
863/* with the kernel/libev internal state */
864inline_size void
670fd_reify (EV_P) 865fd_reify (EV_P)
671{ 866{
672 int i; 867 int i;
673 868
674 for (i = 0; i < fdchangecnt; ++i) 869 for (i = 0; i < fdchangecnt; ++i)
… …
683 events |= (unsigned char)w->events; 878 events |= (unsigned char)w->events;
684 879
685#if EV_SELECT_IS_WINSOCKET 880#if EV_SELECT_IS_WINSOCKET
686 if (events) 881 if (events)
687 { 882 {
688 unsigned long argp; 883 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE 884 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 885 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else 886 #else
692 anfd->handle = _get_osfhandle (fd); 887 anfd->handle = _get_osfhandle (fd);
693 #endif 888 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 889 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695 } 890 }
696#endif 891#endif
697 892
698 { 893 {
699 unsigned char o_events = anfd->events; 894 unsigned char o_events = anfd->events;
700 unsigned char o_reify = anfd->reify; 895 unsigned char o_reify = anfd->reify;
701 896
702 anfd->reify = 0; 897 anfd->reify = 0;
703 anfd->events = events; 898 anfd->events = events;
704 899
705 if (o_events != events || o_reify & EV_IOFDSET) 900 if (o_events != events || o_reify & EV__IOFDSET)
706 backend_modify (EV_A_ fd, o_events, events); 901 backend_modify (EV_A_ fd, o_events, events);
707 } 902 }
708 } 903 }
709 904
710 fdchangecnt = 0; 905 fdchangecnt = 0;
711} 906}
712 907
713void inline_size 908/* something about the given fd changed */
909inline_size void
714fd_change (EV_P_ int fd, int flags) 910fd_change (EV_P_ int fd, int flags)
715{ 911{
716 unsigned char reify = anfds [fd].reify; 912 unsigned char reify = anfds [fd].reify;
717 anfds [fd].reify |= flags; 913 anfds [fd].reify |= flags;
718 914
… …
722 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 918 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723 fdchanges [fdchangecnt - 1] = fd; 919 fdchanges [fdchangecnt - 1] = fd;
724 } 920 }
725} 921}
726 922
727void inline_speed 923/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
924inline_speed void
728fd_kill (EV_P_ int fd) 925fd_kill (EV_P_ int fd)
729{ 926{
730 ev_io *w; 927 ev_io *w;
731 928
732 while ((w = (ev_io *)anfds [fd].head)) 929 while ((w = (ev_io *)anfds [fd].head))
… …
734 ev_io_stop (EV_A_ w); 931 ev_io_stop (EV_A_ w);
735 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 932 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736 } 933 }
737} 934}
738 935
739int inline_size 936/* check whether the given fd is atcually valid, for error recovery */
937inline_size int
740fd_valid (int fd) 938fd_valid (int fd)
741{ 939{
742#ifdef _WIN32 940#ifdef _WIN32
743 return _get_osfhandle (fd) != -1; 941 return _get_osfhandle (fd) != -1;
744#else 942#else
… …
752{ 950{
753 int fd; 951 int fd;
754 952
755 for (fd = 0; fd < anfdmax; ++fd) 953 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 954 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 955 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 956 fd_kill (EV_A_ fd);
759} 957}
760 958
761/* called on ENOMEM in select/poll to kill some fds and retry */ 959/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 960static void noinline
… …
780 978
781 for (fd = 0; fd < anfdmax; ++fd) 979 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 980 if (anfds [fd].events)
783 { 981 {
784 anfds [fd].events = 0; 982 anfds [fd].events = 0;
983 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 984 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786 } 985 }
787} 986}
788 987
789/*****************************************************************************/ 988/*****************************************************************************/
790 989
… …
803#if EV_USE_4HEAP 1002#if EV_USE_4HEAP
804 1003
805#define DHEAP 4 1004#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1005#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1006#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 1007#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 1008
831/* away from the root */ 1009/* away from the root */
832void inline_speed 1010inline_speed void
833downheap (ANHE *heap, int N, int k) 1011downheap (ANHE *heap, int N, int k)
834{ 1012{
835 ANHE he = heap [k]; 1013 ANHE he = heap [k];
836 ANHE *E = heap + N + HEAP0; 1014 ANHE *E = heap + N + HEAP0;
837 1015
838 for (;;) 1016 for (;;)
839 { 1017 {
840 ev_tstamp minat; 1018 ev_tstamp minat;
841 ANHE *minpos; 1019 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1020 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 1021
844 // find minimum child 1022 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 1023 if (expect_true (pos + DHEAP - 1 < E))
846 { 1024 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1025 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1026 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)); 1027 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
… …
870 1048
871 heap [k] = he; 1049 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 1050 ev_active (ANHE_w (he)) = k;
873} 1051}
874 1052
875#else // 4HEAP 1053#else /* 4HEAP */
876 1054
877#define HEAP0 1 1055#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 1056#define HPARENT(k) ((k) >> 1)
1057#define UPHEAP_DONE(p,k) (!(p))
879 1058
880/* towards the root */ 1059/* away from the root */
881void inline_speed 1060inline_speed void
882upheap (ANHE *heap, int k) 1061downheap (ANHE *heap, int N, int k)
883{ 1062{
884 ANHE he = heap [k]; 1063 ANHE he = heap [k];
885 1064
886 for (;;) 1065 for (;;)
887 { 1066 {
888 int p = HPARENT (k); 1067 int c = k << 1;
889 1068
890 /* maybe we could use a dummy element at heap [0]? */ 1069 if (c > N + HEAP0 - 1)
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break; 1070 break;
893 1071
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]) 1072 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917 ? 1 : 0; 1073 ? 1 : 0;
918 1074
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 1075 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 1076 break;
921 1077
… …
928 heap [k] = he; 1084 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 1085 ev_active (ANHE_w (he)) = k;
930} 1086}
931#endif 1087#endif
932 1088
933void inline_size 1089/* towards the root */
1090inline_speed void
1091upheap (ANHE *heap, int k)
1092{
1093 ANHE he = heap [k];
1094
1095 for (;;)
1096 {
1097 int p = HPARENT (k);
1098
1099 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1100 break;
1101
1102 heap [k] = heap [p];
1103 ev_active (ANHE_w (heap [k])) = k;
1104 k = p;
1105 }
1106
1107 heap [k] = he;
1108 ev_active (ANHE_w (he)) = k;
1109}
1110
1111/* move an element suitably so it is in a correct place */
1112inline_size void
934adjustheap (ANHE *heap, int N, int k) 1113adjustheap (ANHE *heap, int N, int k)
935{ 1114{
936 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1115 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
937 upheap (heap, k); 1116 upheap (heap, k);
938 else 1117 else
939 downheap (heap, N, k); 1118 downheap (heap, N, k);
940} 1119}
941 1120
1121/* rebuild the heap: this function is used only once and executed rarely */
1122inline_size void
1123reheap (ANHE *heap, int N)
1124{
1125 int i;
1126
1127 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1128 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1129 for (i = 0; i < N; ++i)
1130 upheap (heap, i + HEAP0);
1131}
1132
942/*****************************************************************************/ 1133/*****************************************************************************/
943 1134
1135/* associate signal watchers to a signal signal */
944typedef struct 1136typedef struct
945{ 1137{
946 WL head; 1138 WL head;
947 EV_ATOMIC_T gotsig; 1139 EV_ATOMIC_T gotsig;
948} ANSIG; 1140} ANSIG;
… …
950static ANSIG *signals; 1142static ANSIG *signals;
951static int signalmax; 1143static int signalmax;
952 1144
953static EV_ATOMIC_T gotsig; 1145static EV_ATOMIC_T gotsig;
954 1146
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/*****************************************************************************/ 1147/*****************************************************************************/
968 1148
969void inline_speed 1149/* used to prepare libev internal fd's */
1150/* this is not fork-safe */
1151inline_speed void
970fd_intern (int fd) 1152fd_intern (int fd)
971{ 1153{
972#ifdef _WIN32 1154#ifdef _WIN32
973 int arg = 1; 1155 unsigned long arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1156 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else 1157#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC); 1158 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK); 1159 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif 1160#endif
979} 1161}
980 1162
981static void noinline 1163static void noinline
982evpipe_init (EV_P) 1164evpipe_init (EV_P)
983{ 1165{
984 if (!ev_is_active (&pipeev)) 1166 if (!ev_is_active (&pipe_w))
985 { 1167 {
986#if EV_USE_EVENTFD 1168#if EV_USE_EVENTFD
1169 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1170 if (evfd < 0 && errno == EINVAL)
987 if ((evfd = eventfd (0, 0)) >= 0) 1171 evfd = eventfd (0, 0);
1172
1173 if (evfd >= 0)
988 { 1174 {
989 evpipe [0] = -1; 1175 evpipe [0] = -1;
990 fd_intern (evfd); 1176 fd_intern (evfd); /* doing it twice doesn't hurt */
991 ev_io_set (&pipeev, evfd, EV_READ); 1177 ev_io_set (&pipe_w, evfd, EV_READ);
992 } 1178 }
993 else 1179 else
994#endif 1180#endif
995 { 1181 {
996 while (pipe (evpipe)) 1182 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1183 ev_syserr ("(libev) error creating signal/async pipe");
998 1184
999 fd_intern (evpipe [0]); 1185 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1186 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1187 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002 } 1188 }
1003 1189
1004 ev_io_start (EV_A_ &pipeev); 1190 ev_io_start (EV_A_ &pipe_w);
1005 ev_unref (EV_A); /* watcher should not keep loop alive */ 1191 ev_unref (EV_A); /* watcher should not keep loop alive */
1006 } 1192 }
1007} 1193}
1008 1194
1009void inline_size 1195inline_size void
1010evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1196evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011{ 1197{
1012 if (!*flag) 1198 if (!*flag)
1013 { 1199 {
1014 int old_errno = errno; /* save errno because write might clobber it */ 1200 int old_errno = errno; /* save errno because write might clobber it */
… …
1027 1213
1028 errno = old_errno; 1214 errno = old_errno;
1029 } 1215 }
1030} 1216}
1031 1217
1218/* called whenever the libev signal pipe */
1219/* got some events (signal, async) */
1032static void 1220static void
1033pipecb (EV_P_ ev_io *iow, int revents) 1221pipecb (EV_P_ ev_io *iow, int revents)
1034{ 1222{
1035#if EV_USE_EVENTFD 1223#if EV_USE_EVENTFD
1036 if (evfd >= 0) 1224 if (evfd >= 0)
… …
1092ev_feed_signal_event (EV_P_ int signum) 1280ev_feed_signal_event (EV_P_ int signum)
1093{ 1281{
1094 WL w; 1282 WL w;
1095 1283
1096#if EV_MULTIPLICITY 1284#if EV_MULTIPLICITY
1097 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1285 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1098#endif 1286#endif
1099 1287
1100 --signum; 1288 --signum;
1101 1289
1102 if (signum < 0 || signum >= signalmax) 1290 if (signum < 0 || signum >= signalmax)
… …
1106 1294
1107 for (w = signals [signum].head; w; w = w->next) 1295 for (w = signals [signum].head; w; w = w->next)
1108 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1296 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1109} 1297}
1110 1298
1299#if EV_USE_SIGNALFD
1300static void
1301sigfdcb (EV_P_ ev_io *iow, int revents)
1302{
1303 struct signalfd_siginfo si[4], *sip;
1304
1305 for (;;)
1306 {
1307 ssize_t res = read (sigfd, si, sizeof (si));
1308
1309 /* not ISO-C, as res might be -1, but works with SuS */
1310 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1311 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1312
1313 if (res < (ssize_t)sizeof (si))
1314 break;
1315 }
1316}
1317#endif
1318
1111/*****************************************************************************/ 1319/*****************************************************************************/
1112 1320
1113static WL childs [EV_PID_HASHSIZE]; 1321static WL childs [EV_PID_HASHSIZE];
1114 1322
1115#ifndef _WIN32 1323#ifndef _WIN32
… …
1118 1326
1119#ifndef WIFCONTINUED 1327#ifndef WIFCONTINUED
1120# define WIFCONTINUED(status) 0 1328# define WIFCONTINUED(status) 0
1121#endif 1329#endif
1122 1330
1123void inline_speed 1331/* handle a single child status event */
1332inline_speed void
1124child_reap (EV_P_ int chain, int pid, int status) 1333child_reap (EV_P_ int chain, int pid, int status)
1125{ 1334{
1126 ev_child *w; 1335 ev_child *w;
1127 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1336 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128 1337
… …
1141 1350
1142#ifndef WCONTINUED 1351#ifndef WCONTINUED
1143# define WCONTINUED 0 1352# define WCONTINUED 0
1144#endif 1353#endif
1145 1354
1355/* called on sigchld etc., calls waitpid */
1146static void 1356static void
1147childcb (EV_P_ ev_signal *sw, int revents) 1357childcb (EV_P_ ev_signal *sw, int revents)
1148{ 1358{
1149 int pid, status; 1359 int pid, status;
1150 1360
… …
1231 /* kqueue is borked on everything but netbsd apparently */ 1441 /* kqueue is borked on everything but netbsd apparently */
1232 /* it usually doesn't work correctly on anything but sockets and pipes */ 1442 /* it usually doesn't work correctly on anything but sockets and pipes */
1233 flags &= ~EVBACKEND_KQUEUE; 1443 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1444#endif
1235#ifdef __APPLE__ 1445#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1446 /* only select works correctly on that "unix-certified" platform */
1237 flags &= ~EVBACKEND_POLL; 1447 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1448 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1238#endif 1449#endif
1239 1450
1240 return flags; 1451 return flags;
1241} 1452}
1242 1453
… …
1256ev_backend (EV_P) 1467ev_backend (EV_P)
1257{ 1468{
1258 return backend; 1469 return backend;
1259} 1470}
1260 1471
1472#if EV_MINIMAL < 2
1261unsigned int 1473unsigned int
1262ev_loop_count (EV_P) 1474ev_loop_count (EV_P)
1263{ 1475{
1264 return loop_count; 1476 return loop_count;
1265} 1477}
1266 1478
1479unsigned int
1480ev_loop_depth (EV_P)
1481{
1482 return loop_depth;
1483}
1484
1267void 1485void
1268ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1486ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1269{ 1487{
1270 io_blocktime = interval; 1488 io_blocktime = interval;
1271} 1489}
… …
1274ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1492ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275{ 1493{
1276 timeout_blocktime = interval; 1494 timeout_blocktime = interval;
1277} 1495}
1278 1496
1497void
1498ev_set_userdata (EV_P_ void *data)
1499{
1500 userdata = data;
1501}
1502
1503void *
1504ev_userdata (EV_P)
1505{
1506 return userdata;
1507}
1508
1509void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1510{
1511 invoke_cb = invoke_pending_cb;
1512}
1513
1514void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1515{
1516 release_cb = release;
1517 acquire_cb = acquire;
1518}
1519#endif
1520
1521/* initialise a loop structure, must be zero-initialised */
1279static void noinline 1522static void noinline
1280loop_init (EV_P_ unsigned int flags) 1523loop_init (EV_P_ unsigned int flags)
1281{ 1524{
1282 if (!backend) 1525 if (!backend)
1283 { 1526 {
1527#if EV_USE_REALTIME
1528 if (!have_realtime)
1529 {
1530 struct timespec ts;
1531
1532 if (!clock_gettime (CLOCK_REALTIME, &ts))
1533 have_realtime = 1;
1534 }
1535#endif
1536
1284#if EV_USE_MONOTONIC 1537#if EV_USE_MONOTONIC
1538 if (!have_monotonic)
1285 { 1539 {
1286 struct timespec ts; 1540 struct timespec ts;
1541
1287 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1542 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288 have_monotonic = 1; 1543 have_monotonic = 1;
1289 } 1544 }
1290#endif 1545#endif
1291 1546
1292 ev_rt_now = ev_time (); 1547 ev_rt_now = ev_time ();
1293 mn_now = get_clock (); 1548 mn_now = get_clock ();
1294 now_floor = mn_now; 1549 now_floor = mn_now;
1295 rtmn_diff = ev_rt_now - mn_now; 1550 rtmn_diff = ev_rt_now - mn_now;
1551#if EV_MINIMAL < 2
1552 invoke_cb = ev_invoke_pending;
1553#endif
1296 1554
1297 io_blocktime = 0.; 1555 io_blocktime = 0.;
1298 timeout_blocktime = 0.; 1556 timeout_blocktime = 0.;
1299 backend = 0; 1557 backend = 0;
1300 backend_fd = -1; 1558 backend_fd = -1;
1301 gotasync = 0; 1559 gotasync = 0;
1302#if EV_USE_INOTIFY 1560#if EV_USE_INOTIFY
1303 fs_fd = -2; 1561 fs_fd = -2;
1304#endif 1562#endif
1563#if EV_USE_SIGNALFD
1564 sigfd = -2;
1565#endif
1305 1566
1306 /* pid check not overridable via env */ 1567 /* pid check not overridable via env */
1307#ifndef _WIN32 1568#ifndef _WIN32
1308 if (flags & EVFLAG_FORKCHECK) 1569 if (flags & EVFLAG_FORKCHECK)
1309 curpid = getpid (); 1570 curpid = getpid ();
… …
1331#endif 1592#endif
1332#if EV_USE_SELECT 1593#if EV_USE_SELECT
1333 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334#endif 1595#endif
1335 1596
1597 ev_prepare_init (&pending_w, pendingcb);
1598
1336 ev_init (&pipeev, pipecb); 1599 ev_init (&pipe_w, pipecb);
1337 ev_set_priority (&pipeev, EV_MAXPRI); 1600 ev_set_priority (&pipe_w, EV_MAXPRI);
1338 } 1601 }
1339} 1602}
1340 1603
1604/* free up a loop structure */
1341static void noinline 1605static void noinline
1342loop_destroy (EV_P) 1606loop_destroy (EV_P)
1343{ 1607{
1344 int i; 1608 int i;
1345 1609
1346 if (ev_is_active (&pipeev)) 1610 if (ev_is_active (&pipe_w))
1347 { 1611 {
1348 ev_ref (EV_A); /* signal watcher */ 1612 /*ev_ref (EV_A);*/
1349 ev_io_stop (EV_A_ &pipeev); 1613 /*ev_io_stop (EV_A_ &pipe_w);*/
1350 1614
1351#if EV_USE_EVENTFD 1615#if EV_USE_EVENTFD
1352 if (evfd >= 0) 1616 if (evfd >= 0)
1353 close (evfd); 1617 close (evfd);
1354#endif 1618#endif
… …
1358 close (evpipe [0]); 1622 close (evpipe [0]);
1359 close (evpipe [1]); 1623 close (evpipe [1]);
1360 } 1624 }
1361 } 1625 }
1362 1626
1627#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd);
1634 }
1635#endif
1636
1363#if EV_USE_INOTIFY 1637#if EV_USE_INOTIFY
1364 if (fs_fd >= 0) 1638 if (fs_fd >= 0)
1365 close (fs_fd); 1639 close (fs_fd);
1366#endif 1640#endif
1367 1641
… …
1390#if EV_IDLE_ENABLE 1664#if EV_IDLE_ENABLE
1391 array_free (idle, [i]); 1665 array_free (idle, [i]);
1392#endif 1666#endif
1393 } 1667 }
1394 1668
1395 ev_free (anfds); anfdmax = 0; 1669 ev_free (anfds); anfds = 0; anfdmax = 0;
1396 1670
1397 /* have to use the microsoft-never-gets-it-right macro */ 1671 /* have to use the microsoft-never-gets-it-right macro */
1672 array_free (rfeed, EMPTY);
1398 array_free (fdchange, EMPTY); 1673 array_free (fdchange, EMPTY);
1399 array_free (timer, EMPTY); 1674 array_free (timer, EMPTY);
1400#if EV_PERIODIC_ENABLE 1675#if EV_PERIODIC_ENABLE
1401 array_free (periodic, EMPTY); 1676 array_free (periodic, EMPTY);
1402#endif 1677#endif
… …
1411 1686
1412 backend = 0; 1687 backend = 0;
1413} 1688}
1414 1689
1415#if EV_USE_INOTIFY 1690#if EV_USE_INOTIFY
1416void inline_size infy_fork (EV_P); 1691inline_size void infy_fork (EV_P);
1417#endif 1692#endif
1418 1693
1419void inline_size 1694inline_size void
1420loop_fork (EV_P) 1695loop_fork (EV_P)
1421{ 1696{
1422#if EV_USE_PORT 1697#if EV_USE_PORT
1423 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1698 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424#endif 1699#endif
… …
1430#endif 1705#endif
1431#if EV_USE_INOTIFY 1706#if EV_USE_INOTIFY
1432 infy_fork (EV_A); 1707 infy_fork (EV_A);
1433#endif 1708#endif
1434 1709
1435 if (ev_is_active (&pipeev)) 1710 if (ev_is_active (&pipe_w))
1436 { 1711 {
1437 /* this "locks" the handlers against writing to the pipe */ 1712 /* this "locks" the handlers against writing to the pipe */
1438 /* while we modify the fd vars */ 1713 /* while we modify the fd vars */
1439 gotsig = 1; 1714 gotsig = 1;
1440#if EV_ASYNC_ENABLE 1715#if EV_ASYNC_ENABLE
1441 gotasync = 1; 1716 gotasync = 1;
1442#endif 1717#endif
1443 1718
1444 ev_ref (EV_A); 1719 ev_ref (EV_A);
1445 ev_io_stop (EV_A_ &pipeev); 1720 ev_io_stop (EV_A_ &pipe_w);
1446 1721
1447#if EV_USE_EVENTFD 1722#if EV_USE_EVENTFD
1448 if (evfd >= 0) 1723 if (evfd >= 0)
1449 close (evfd); 1724 close (evfd);
1450#endif 1725#endif
… …
1455 close (evpipe [1]); 1730 close (evpipe [1]);
1456 } 1731 }
1457 1732
1458 evpipe_init (EV_A); 1733 evpipe_init (EV_A);
1459 /* now iterate over everything, in case we missed something */ 1734 /* now iterate over everything, in case we missed something */
1460 pipecb (EV_A_ &pipeev, EV_READ); 1735 pipecb (EV_A_ &pipe_w, EV_READ);
1461 } 1736 }
1462 1737
1463 postfork = 0; 1738 postfork = 0;
1464} 1739}
1465 1740
1466#if EV_MULTIPLICITY 1741#if EV_MULTIPLICITY
1742
1467struct ev_loop * 1743struct ev_loop *
1468ev_loop_new (unsigned int flags) 1744ev_loop_new (unsigned int flags)
1469{ 1745{
1470 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1746 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1471 1747
1472 memset (loop, 0, sizeof (struct ev_loop)); 1748 memset (loop, 0, sizeof (struct ev_loop));
1473
1474 loop_init (EV_A_ flags); 1749 loop_init (EV_A_ flags);
1475 1750
1476 if (ev_backend (EV_A)) 1751 if (ev_backend (EV_A))
1477 return loop; 1752 return loop;
1478 1753
… …
1488 1763
1489void 1764void
1490ev_loop_fork (EV_P) 1765ev_loop_fork (EV_P)
1491{ 1766{
1492 postfork = 1; /* must be in line with ev_default_fork */ 1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */
1770
1771#if EV_VERIFY
1772static void noinline
1773verify_watcher (EV_P_ W w)
1774{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776
1777 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779}
1780
1781static void noinline
1782verify_heap (EV_P_ ANHE *heap, int N)
1783{
1784 int i;
1785
1786 for (i = HEAP0; i < N + HEAP0; ++i)
1787 {
1788 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1789 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1790 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1791
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 }
1794}
1795
1796static void noinline
1797array_verify (EV_P_ W *ws, int cnt)
1798{
1799 while (cnt--)
1800 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]);
1803 }
1804}
1805#endif
1806
1807#if EV_MINIMAL < 2
1808void
1809ev_loop_verify (EV_P)
1810{
1811#if EV_VERIFY
1812 int i;
1813 WL w;
1814
1815 assert (activecnt >= -1);
1816
1817 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820
1821 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i)
1823 for (w = anfds [i].head; w; w = w->next)
1824 {
1825 verify_watcher (EV_A_ (W)w);
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 }
1829
1830 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt);
1832
1833#if EV_PERIODIC_ENABLE
1834 assert (periodicmax >= periodiccnt);
1835 verify_heap (EV_A_ periodics, periodiccnt);
1836#endif
1837
1838 for (i = NUMPRI; i--; )
1839 {
1840 assert (pendingmax [i] >= pendingcnt [i]);
1841#if EV_IDLE_ENABLE
1842 assert (idleall >= 0);
1843 assert (idlemax [i] >= idlecnt [i]);
1844 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1845#endif
1846 }
1847
1848#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif
1852
1853#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif
1857
1858 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt);
1860
1861 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt);
1863
1864# if 0
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1867# endif
1868#endif
1493} 1869}
1494#endif 1870#endif
1495 1871
1496#if EV_MULTIPLICITY 1872#if EV_MULTIPLICITY
1497struct ev_loop * 1873struct ev_loop *
… …
1532{ 1908{
1533#if EV_MULTIPLICITY 1909#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr; 1910 struct ev_loop *loop = ev_default_loop_ptr;
1535#endif 1911#endif
1536 1912
1913 ev_default_loop_ptr = 0;
1914
1537#ifndef _WIN32 1915#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */ 1916 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev); 1917 ev_signal_stop (EV_A_ &childev);
1540#endif 1918#endif
1541 1919
… …
1547{ 1925{
1548#if EV_MULTIPLICITY 1926#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr; 1927 struct ev_loop *loop = ev_default_loop_ptr;
1550#endif 1928#endif
1551 1929
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 1930 postfork = 1; /* must be in line with ev_loop_fork */
1554} 1931}
1555 1932
1556/*****************************************************************************/ 1933/*****************************************************************************/
1557 1934
1558void 1935void
1559ev_invoke (EV_P_ void *w, int revents) 1936ev_invoke (EV_P_ void *w, int revents)
1560{ 1937{
1561 EV_CB_INVOKE ((W)w, revents); 1938 EV_CB_INVOKE ((W)w, revents);
1562} 1939}
1563 1940
1564void inline_speed 1941unsigned int
1565call_pending (EV_P) 1942ev_pending_count (EV_P)
1943{
1944 int pri;
1945 unsigned int count = 0;
1946
1947 for (pri = NUMPRI; pri--; )
1948 count += pendingcnt [pri];
1949
1950 return count;
1951}
1952
1953void noinline
1954ev_invoke_pending (EV_P)
1566{ 1955{
1567 int pri; 1956 int pri;
1568 1957
1569 for (pri = NUMPRI; pri--; ) 1958 for (pri = NUMPRI; pri--; )
1570 while (pendingcnt [pri]) 1959 while (pendingcnt [pri])
1571 { 1960 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 1962
1574 if (expect_true (p->w))
1575 {
1576 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1577 1965
1578 p->w->pending = 0; 1966 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 1967 EV_CB_INVOKE (p->w, p->events);
1580 } 1968 EV_FREQUENT_CHECK;
1581 } 1969 }
1582} 1970}
1583 1971
1584#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1585void inline_size 1973/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */
1975inline_size void
1586idle_reify (EV_P) 1976idle_reify (EV_P)
1587{ 1977{
1588 if (expect_false (idleall)) 1978 if (expect_false (idleall))
1589 { 1979 {
1590 int pri; 1980 int pri;
… …
1602 } 1992 }
1603 } 1993 }
1604} 1994}
1605#endif 1995#endif
1606 1996
1607void inline_size 1997/* make timers pending */
1998inline_size void
1608timers_reify (EV_P) 1999timers_reify (EV_P)
1609{ 2000{
2001 EV_FREQUENT_CHECK;
2002
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2003 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 2004 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2005 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 { 2006 {
2007 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2008
2009 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2010
2011 /* first reschedule or stop timer */
2012 if (w->repeat)
2013 {
1619 ev_at (w) += w->repeat; 2014 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 2015 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 2016 ev_at (w) = mn_now;
1622 2017
1623 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2018 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624 2019
1625 ANHE_at_set (timers [HEAP0]); 2020 ANHE_at_cache (timers [HEAP0]);
1626 downheap (timers, timercnt, HEAP0); 2021 downheap (timers, timercnt, HEAP0);
2022 }
2023 else
2024 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2025
2026 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w);
1627 } 2028 }
1628 else 2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 2030
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2031 feed_reverse_done (EV_A_ EV_TIMEOUT);
1632 } 2032 }
1633} 2033}
1634 2034
1635#if EV_PERIODIC_ENABLE 2035#if EV_PERIODIC_ENABLE
1636void inline_size 2036/* make periodics pending */
2037inline_size void
1637periodics_reify (EV_P) 2038periodics_reify (EV_P)
1638{ 2039{
2040 EV_FREQUENT_CHECK;
2041
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 2043 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2044 int feed_count = 0;
1642 2045
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2046 do
1644
1645 /* first reschedule or stop timer */
1646 if (w->reschedule_cb)
1647 { 2047 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2051
2052 /* first reschedule or stop timer */
2053 if (w->reschedule_cb)
2054 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2055 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 2056
1650 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2057 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651 2058
1652 ANHE_at_set (periodics [HEAP0]); 2059 ANHE_at_cache (periodics [HEAP0]);
1653 downheap (periodics, periodiccnt, HEAP0); 2060 downheap (periodics, periodiccnt, HEAP0);
2061 }
2062 else if (w->interval)
2063 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0);
2080 }
2081 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2083
2084 EV_FREQUENT_CHECK;
2085 feed_reverse (EV_A_ (W)w);
1654 } 2086 }
1655 else if (w->interval) 2087 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 2088
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); 2089 feed_reverse_done (EV_A_ EV_PERIODIC);
1678 } 2090 }
1679} 2091}
1680 2092
2093/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1681static void noinline 2095static void noinline
1682periodics_reschedule (EV_P) 2096periodics_reschedule (EV_P)
1683{ 2097{
1684 int i; 2098 int i;
1685 2099
… …
1691 if (w->reschedule_cb) 2105 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 2107 else if (w->interval)
1694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695 2109
1696 ANHE_at_set (periodics [i]); 2110 ANHE_at_cache (periodics [i]);
1697 } 2111 }
1698 2112
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 2113 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */ 2114}
2115#endif
2116
2117/* adjust all timers by a given offset */
2118static void noinline
2119timers_reschedule (EV_P_ ev_tstamp adjust)
2120{
2121 int i;
2122
1701 for (i = 0; i < periodiccnt; ++i) 2123 for (i = 0; i < timercnt; ++i)
1702 upheap (periodics, i + HEAP0); 2124 {
2125 ANHE *he = timers + i + HEAP0;
2126 ANHE_w (*he)->at += adjust;
2127 ANHE_at_cache (*he);
2128 }
1703} 2129}
1704#endif
1705 2130
1706void inline_speed 2131/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */
2133inline_speed void
1707time_update (EV_P_ ev_tstamp max_block) 2134time_update (EV_P_ ev_tstamp max_block)
1708{ 2135{
1709 int i;
1710
1711#if EV_USE_MONOTONIC 2136#if EV_USE_MONOTONIC
1712 if (expect_true (have_monotonic)) 2137 if (expect_true (have_monotonic))
1713 { 2138 {
2139 int i;
1714 ev_tstamp odiff = rtmn_diff; 2140 ev_tstamp odiff = rtmn_diff;
1715 2141
1716 mn_now = get_clock (); 2142 mn_now = get_clock ();
1717 2143
1718 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2144 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1744 ev_rt_now = ev_time (); 2170 ev_rt_now = ev_time ();
1745 mn_now = get_clock (); 2171 mn_now = get_clock ();
1746 now_floor = mn_now; 2172 now_floor = mn_now;
1747 } 2173 }
1748 2174
2175 /* no timer adjustment, as the monotonic clock doesn't jump */
2176 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749# if EV_PERIODIC_ENABLE 2177# if EV_PERIODIC_ENABLE
1750 periodics_reschedule (EV_A); 2178 periodics_reschedule (EV_A);
1751# endif 2179# endif
1752 /* no timer adjustment, as the monotonic clock doesn't jump */
1753 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754 } 2180 }
1755 else 2181 else
1756#endif 2182#endif
1757 { 2183 {
1758 ev_rt_now = ev_time (); 2184 ev_rt_now = ev_time ();
1759 2185
1760 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2186 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1761 { 2187 {
2188 /* adjust timers. this is easy, as the offset is the same for all of them */
2189 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1762#if EV_PERIODIC_ENABLE 2190#if EV_PERIODIC_ENABLE
1763 periodics_reschedule (EV_A); 2191 periodics_reschedule (EV_A);
1764#endif 2192#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 } 2193 }
1773 2194
1774 mn_now = ev_rt_now; 2195 mn_now = ev_rt_now;
1775 } 2196 }
1776} 2197}
1777 2198
1778void 2199void
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) 2200ev_loop (EV_P_ int flags)
1794{ 2201{
2202#if EV_MINIMAL < 2
2203 ++loop_depth;
2204#endif
2205
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2207
1795 loop_done = EVUNLOOP_CANCEL; 2208 loop_done = EVUNLOOP_CANCEL;
1796 2209
1797 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1798 2211
1799 do 2212 do
1800 { 2213 {
2214#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A);
2216#endif
2217
1801#ifndef _WIN32 2218#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 2219 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 2220 if (expect_false (getpid () != curpid))
1804 { 2221 {
1805 curpid = getpid (); 2222 curpid = getpid ();
… …
1811 /* we might have forked, so queue fork handlers */ 2228 /* we might have forked, so queue fork handlers */
1812 if (expect_false (postfork)) 2229 if (expect_false (postfork))
1813 if (forkcnt) 2230 if (forkcnt)
1814 { 2231 {
1815 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1816 call_pending (EV_A); 2233 EV_INVOKE_PENDING;
1817 } 2234 }
1818#endif 2235#endif
1819 2236
1820 /* queue prepare watchers (and execute them) */ 2237 /* queue prepare watchers (and execute them) */
1821 if (expect_false (preparecnt)) 2238 if (expect_false (preparecnt))
1822 { 2239 {
1823 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824 call_pending (EV_A); 2241 EV_INVOKE_PENDING;
1825 } 2242 }
1826 2243
1827 if (expect_false (!activecnt)) 2244 if (expect_false (loop_done))
1828 break; 2245 break;
1829 2246
1830 /* we might have forked, so reify kernel state if necessary */ 2247 /* we might have forked, so reify kernel state if necessary */
1831 if (expect_false (postfork)) 2248 if (expect_false (postfork))
1832 loop_fork (EV_A); 2249 loop_fork (EV_A);
… …
1839 ev_tstamp waittime = 0.; 2256 ev_tstamp waittime = 0.;
1840 ev_tstamp sleeptime = 0.; 2257 ev_tstamp sleeptime = 0.;
1841 2258
1842 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1843 { 2260 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
1844 /* update time to cancel out callback processing overhead */ 2264 /* update time to cancel out callback processing overhead */
1845 time_update (EV_A_ 1e100); 2265 time_update (EV_A_ 1e100);
1846 2266
1847 waittime = MAX_BLOCKTIME; 2267 waittime = MAX_BLOCKTIME;
1848 2268
… …
1858 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1859 if (waittime > to) waittime = to; 2279 if (waittime > to) waittime = to;
1860 } 2280 }
1861#endif 2281#endif
1862 2282
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */
1863 if (expect_false (waittime < timeout_blocktime)) 2284 if (expect_false (waittime < timeout_blocktime))
1864 waittime = timeout_blocktime; 2285 waittime = timeout_blocktime;
1865 2286
1866 sleeptime = waittime - backend_fudge; 2287 /* extra check because io_blocktime is commonly 0 */
1867
1868 if (expect_true (sleeptime > io_blocktime)) 2288 if (expect_false (io_blocktime))
1869 sleeptime = io_blocktime;
1870
1871 if (sleeptime)
1872 { 2289 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291
2292 if (sleeptime > waittime - backend_fudge)
2293 sleeptime = waittime - backend_fudge;
2294
2295 if (expect_true (sleeptime > 0.))
2296 {
1873 ev_sleep (sleeptime); 2297 ev_sleep (sleeptime);
1874 waittime -= sleeptime; 2298 waittime -= sleeptime;
2299 }
1875 } 2300 }
1876 } 2301 }
1877 2302
2303#if EV_MINIMAL < 2
1878 ++loop_count; 2304 ++loop_count;
2305#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1879 backend_poll (EV_A_ waittime); 2307 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1880 2309
1881 /* update ev_rt_now, do magic */ 2310 /* update ev_rt_now, do magic */
1882 time_update (EV_A_ waittime + sleeptime); 2311 time_update (EV_A_ waittime + sleeptime);
1883 } 2312 }
1884 2313
… …
1895 2324
1896 /* queue check watchers, to be executed first */ 2325 /* queue check watchers, to be executed first */
1897 if (expect_false (checkcnt)) 2326 if (expect_false (checkcnt))
1898 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1899 2328
1900 call_pending (EV_A); 2329 EV_INVOKE_PENDING;
1901 } 2330 }
1902 while (expect_true ( 2331 while (expect_true (
1903 activecnt 2332 activecnt
1904 && !loop_done 2333 && !loop_done
1905 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1906 )); 2335 ));
1907 2336
1908 if (loop_done == EVUNLOOP_ONE) 2337 if (loop_done == EVUNLOOP_ONE)
1909 loop_done = EVUNLOOP_CANCEL; 2338 loop_done = EVUNLOOP_CANCEL;
2339
2340#if EV_MINIMAL < 2
2341 --loop_depth;
2342#endif
1910} 2343}
1911 2344
1912void 2345void
1913ev_unloop (EV_P_ int how) 2346ev_unloop (EV_P_ int how)
1914{ 2347{
1915 loop_done = how; 2348 loop_done = how;
1916} 2349}
1917 2350
2351void
2352ev_ref (EV_P)
2353{
2354 ++activecnt;
2355}
2356
2357void
2358ev_unref (EV_P)
2359{
2360 --activecnt;
2361}
2362
2363void
2364ev_now_update (EV_P)
2365{
2366 time_update (EV_A_ 1e100);
2367}
2368
2369void
2370ev_suspend (EV_P)
2371{
2372 ev_now_update (EV_A);
2373}
2374
2375void
2376ev_resume (EV_P)
2377{
2378 ev_tstamp mn_prev = mn_now;
2379
2380 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev);
2382#if EV_PERIODIC_ENABLE
2383 /* TODO: really do this? */
2384 periodics_reschedule (EV_A);
2385#endif
2386}
2387
1918/*****************************************************************************/ 2388/*****************************************************************************/
2389/* singly-linked list management, used when the expected list length is short */
1919 2390
1920void inline_size 2391inline_size void
1921wlist_add (WL *head, WL elem) 2392wlist_add (WL *head, WL elem)
1922{ 2393{
1923 elem->next = *head; 2394 elem->next = *head;
1924 *head = elem; 2395 *head = elem;
1925} 2396}
1926 2397
1927void inline_size 2398inline_size void
1928wlist_del (WL *head, WL elem) 2399wlist_del (WL *head, WL elem)
1929{ 2400{
1930 while (*head) 2401 while (*head)
1931 { 2402 {
1932 if (*head == elem) 2403 if (*head == elem)
… …
1937 2408
1938 head = &(*head)->next; 2409 head = &(*head)->next;
1939 } 2410 }
1940} 2411}
1941 2412
1942void inline_speed 2413/* internal, faster, version of ev_clear_pending */
2414inline_speed void
1943clear_pending (EV_P_ W w) 2415clear_pending (EV_P_ W w)
1944{ 2416{
1945 if (w->pending) 2417 if (w->pending)
1946 { 2418 {
1947 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2419 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948 w->pending = 0; 2420 w->pending = 0;
1949 } 2421 }
1950} 2422}
1951 2423
1952int 2424int
… …
1956 int pending = w_->pending; 2428 int pending = w_->pending;
1957 2429
1958 if (expect_true (pending)) 2430 if (expect_true (pending))
1959 { 2431 {
1960 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2432 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2433 p->w = (W)&pending_w;
1961 w_->pending = 0; 2434 w_->pending = 0;
1962 p->w = 0;
1963 return p->events; 2435 return p->events;
1964 } 2436 }
1965 else 2437 else
1966 return 0; 2438 return 0;
1967} 2439}
1968 2440
1969void inline_size 2441inline_size void
1970pri_adjust (EV_P_ W w) 2442pri_adjust (EV_P_ W w)
1971{ 2443{
1972 int pri = w->priority; 2444 int pri = ev_priority (w);
1973 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2445 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2446 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975 w->priority = pri; 2447 ev_set_priority (w, pri);
1976} 2448}
1977 2449
1978void inline_speed 2450inline_speed void
1979ev_start (EV_P_ W w, int active) 2451ev_start (EV_P_ W w, int active)
1980{ 2452{
1981 pri_adjust (EV_A_ w); 2453 pri_adjust (EV_A_ w);
1982 w->active = active; 2454 w->active = active;
1983 ev_ref (EV_A); 2455 ev_ref (EV_A);
1984} 2456}
1985 2457
1986void inline_size 2458inline_size void
1987ev_stop (EV_P_ W w) 2459ev_stop (EV_P_ W w)
1988{ 2460{
1989 ev_unref (EV_A); 2461 ev_unref (EV_A);
1990 w->active = 0; 2462 w->active = 0;
1991} 2463}
… …
1998 int fd = w->fd; 2470 int fd = w->fd;
1999 2471
2000 if (expect_false (ev_is_active (w))) 2472 if (expect_false (ev_is_active (w)))
2001 return; 2473 return;
2002 2474
2003 assert (("ev_io_start called with negative fd", fd >= 0)); 2475 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477
2478 EV_FREQUENT_CHECK;
2004 2479
2005 ev_start (EV_A_ (W)w, 1); 2480 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2482 wlist_add (&anfds[fd].head, (WL)w);
2008 2483
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2010 w->events &= ~EV_IOFDSET; 2485 w->events &= ~EV__IOFDSET;
2486
2487 EV_FREQUENT_CHECK;
2011} 2488}
2012 2489
2013void noinline 2490void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2491ev_io_stop (EV_P_ ev_io *w)
2015{ 2492{
2016 clear_pending (EV_A_ (W)w); 2493 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2494 if (expect_false (!ev_is_active (w)))
2018 return; 2495 return;
2019 2496
2020 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2497 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2498
2499 EV_FREQUENT_CHECK;
2021 2500
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2501 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2502 ev_stop (EV_A_ (W)w);
2024 2503
2025 fd_change (EV_A_ w->fd, 1); 2504 fd_change (EV_A_ w->fd, 1);
2505
2506 EV_FREQUENT_CHECK;
2026} 2507}
2027 2508
2028void noinline 2509void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2510ev_timer_start (EV_P_ ev_timer *w)
2030{ 2511{
2031 if (expect_false (ev_is_active (w))) 2512 if (expect_false (ev_is_active (w)))
2032 return; 2513 return;
2033 2514
2034 ev_at (w) += mn_now; 2515 ev_at (w) += mn_now;
2035 2516
2036 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2517 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037 2518
2519 EV_FREQUENT_CHECK;
2520
2521 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2522 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2523 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2524 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2525 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2526 upheap (timers, ev_active (w));
2043 2527
2528 EV_FREQUENT_CHECK;
2529
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2531}
2046 2532
2047void noinline 2533void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2534ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2535{
2050 clear_pending (EV_A_ (W)w); 2536 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2537 if (expect_false (!ev_is_active (w)))
2052 return; 2538 return;
2053 2539
2540 EV_FREQUENT_CHECK;
2541
2054 { 2542 {
2055 int active = ev_active (w); 2543 int active = ev_active (w);
2056 2544
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2545 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2546
2547 --timercnt;
2548
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2549 if (expect_true (active < timercnt + HEAP0))
2060 { 2550 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2551 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2552 adjustheap (timers, timercnt, active);
2063 } 2553 }
2064
2065 --timercnt;
2066 } 2554 }
2555
2556 EV_FREQUENT_CHECK;
2067 2557
2068 ev_at (w) -= mn_now; 2558 ev_at (w) -= mn_now;
2069 2559
2070 ev_stop (EV_A_ (W)w); 2560 ev_stop (EV_A_ (W)w);
2071} 2561}
2072 2562
2073void noinline 2563void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2564ev_timer_again (EV_P_ ev_timer *w)
2075{ 2565{
2566 EV_FREQUENT_CHECK;
2567
2076 if (ev_is_active (w)) 2568 if (ev_is_active (w))
2077 { 2569 {
2078 if (w->repeat) 2570 if (w->repeat)
2079 { 2571 {
2080 ev_at (w) = mn_now + w->repeat; 2572 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2573 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2574 adjustheap (timers, timercnt, ev_active (w));
2083 } 2575 }
2084 else 2576 else
2085 ev_timer_stop (EV_A_ w); 2577 ev_timer_stop (EV_A_ w);
2086 } 2578 }
2087 else if (w->repeat) 2579 else if (w->repeat)
2088 { 2580 {
2089 ev_at (w) = w->repeat; 2581 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2582 ev_timer_start (EV_A_ w);
2091 } 2583 }
2584
2585 EV_FREQUENT_CHECK;
2586}
2587
2588ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w)
2590{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2092} 2592}
2093 2593
2094#if EV_PERIODIC_ENABLE 2594#if EV_PERIODIC_ENABLE
2095void noinline 2595void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2596ev_periodic_start (EV_P_ ev_periodic *w)
… …
2100 2600
2101 if (w->reschedule_cb) 2601 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2603 else if (w->interval)
2104 { 2604 {
2105 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2605 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 */ 2606 /* 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; 2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108 } 2608 }
2109 else 2609 else
2110 ev_at (w) = w->offset; 2610 ev_at (w) = w->offset;
2111 2611
2612 EV_FREQUENT_CHECK;
2613
2614 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2615 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2616 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2617 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2618 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2619 upheap (periodics, ev_active (w));
2117 2620
2621 EV_FREQUENT_CHECK;
2622
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2624}
2120 2625
2121void noinline 2626void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2627ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2628{
2124 clear_pending (EV_A_ (W)w); 2629 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2630 if (expect_false (!ev_is_active (w)))
2126 return; 2631 return;
2127 2632
2633 EV_FREQUENT_CHECK;
2634
2128 { 2635 {
2129 int active = ev_active (w); 2636 int active = ev_active (w);
2130 2637
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2638 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2639
2640 --periodiccnt;
2641
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2642 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2643 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2644 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2645 adjustheap (periodics, periodiccnt, active);
2137 } 2646 }
2138
2139 --periodiccnt;
2140 } 2647 }
2648
2649 EV_FREQUENT_CHECK;
2141 2650
2142 ev_stop (EV_A_ (W)w); 2651 ev_stop (EV_A_ (W)w);
2143} 2652}
2144 2653
2145void noinline 2654void noinline
… …
2157 2666
2158void noinline 2667void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2668ev_signal_start (EV_P_ ev_signal *w)
2160{ 2669{
2161#if EV_MULTIPLICITY 2670#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2671 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif 2672#endif
2164 if (expect_false (ev_is_active (w))) 2673 if (expect_false (ev_is_active (w)))
2165 return; 2674 return;
2166 2675
2167 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2676 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2168 2677
2678 EV_FREQUENT_CHECK;
2679
2680#if EV_USE_SIGNALFD
2681 if (sigfd == -2)
2682 {
2683 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2684 if (sigfd < 0 && errno == EINVAL)
2685 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2686
2687 if (sigfd >= 0)
2688 {
2689 fd_intern (sigfd); /* doing it twice will not hurt */
2690
2691 sigemptyset (&sigfd_set);
2692
2693 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2694 ev_set_priority (&sigfd_w, EV_MAXPRI);
2695 ev_io_start (EV_A_ &sigfd_w);
2696 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2697 }
2698 }
2699
2700 if (sigfd >= 0)
2701 {
2702 /* TODO: check .head */
2703 sigaddset (&sigfd_set, w->signum);
2704 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705
2706 signalfd (sigfd, &sigfd_set, 0);
2707 }
2708 else
2709#endif
2169 evpipe_init (EV_A); 2710 evpipe_init (EV_A);
2170 2711
2171 { 2712 {
2172#ifndef _WIN32 2713#ifndef _WIN32
2173 sigset_t full, prev; 2714 sigset_t full, prev;
2174 sigfillset (&full); 2715 sigfillset (&full);
2175 sigprocmask (SIG_SETMASK, &full, &prev); 2716 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif 2717#endif
2177 2718
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2719 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179 2720
2180#ifndef _WIN32 2721#ifndef _WIN32
2722# if EV_USE_SIGNALFD
2723 if (sigfd < 0)/*TODO*/
2724# endif
2725 sigdelset (&prev, w->signum);
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2726 sigprocmask (SIG_SETMASK, &prev, 0);
2182#endif 2727#endif
2183 } 2728 }
2184 2729
2185 ev_start (EV_A_ (W)w, 1); 2730 ev_start (EV_A_ (W)w, 1);
… …
2188 if (!((WL)w)->next) 2733 if (!((WL)w)->next)
2189 { 2734 {
2190#if _WIN32 2735#if _WIN32
2191 signal (w->signum, ev_sighandler); 2736 signal (w->signum, ev_sighandler);
2192#else 2737#else
2738# if EV_USE_SIGNALFD
2739 if (sigfd < 0) /*TODO*/
2740# endif
2741 {
2193 struct sigaction sa; 2742 struct sigaction sa = { };
2194 sa.sa_handler = ev_sighandler; 2743 sa.sa_handler = ev_sighandler;
2195 sigfillset (&sa.sa_mask); 2744 sigfillset (&sa.sa_mask);
2196 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2745 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197 sigaction (w->signum, &sa, 0); 2746 sigaction (w->signum, &sa, 0);
2747 }
2198#endif 2748#endif
2199 } 2749 }
2750
2751 EV_FREQUENT_CHECK;
2200} 2752}
2201 2753
2202void noinline 2754void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2755ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2756{
2205 clear_pending (EV_A_ (W)w); 2757 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2758 if (expect_false (!ev_is_active (w)))
2207 return; 2759 return;
2208 2760
2761 EV_FREQUENT_CHECK;
2762
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2763 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2764 ev_stop (EV_A_ (W)w);
2211 2765
2212 if (!signals [w->signum - 1].head) 2766 if (!signals [w->signum - 1].head)
2767#if EV_USE_SIGNALFD
2768 if (sigfd >= 0)
2769 {
2770 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2771 sigdelset (&sigfd_set, w->signum);
2772 signalfd (sigfd, &sigfd_set, 0);
2773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2774 /*TODO: maybe unblock signal? */
2775 }
2776 else
2777#endif
2213 signal (w->signum, SIG_DFL); 2778 signal (w->signum, SIG_DFL);
2779
2780 EV_FREQUENT_CHECK;
2214} 2781}
2215 2782
2216void 2783void
2217ev_child_start (EV_P_ ev_child *w) 2784ev_child_start (EV_P_ ev_child *w)
2218{ 2785{
2219#if EV_MULTIPLICITY 2786#if EV_MULTIPLICITY
2220 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2787 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221#endif 2788#endif
2222 if (expect_false (ev_is_active (w))) 2789 if (expect_false (ev_is_active (w)))
2223 return; 2790 return;
2224 2791
2792 EV_FREQUENT_CHECK;
2793
2225 ev_start (EV_A_ (W)w, 1); 2794 ev_start (EV_A_ (W)w, 1);
2226 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2795 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2796
2797 EV_FREQUENT_CHECK;
2227} 2798}
2228 2799
2229void 2800void
2230ev_child_stop (EV_P_ ev_child *w) 2801ev_child_stop (EV_P_ ev_child *w)
2231{ 2802{
2232 clear_pending (EV_A_ (W)w); 2803 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 2804 if (expect_false (!ev_is_active (w)))
2234 return; 2805 return;
2235 2806
2807 EV_FREQUENT_CHECK;
2808
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2809 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 2810 ev_stop (EV_A_ (W)w);
2811
2812 EV_FREQUENT_CHECK;
2238} 2813}
2239 2814
2240#if EV_STAT_ENABLE 2815#if EV_STAT_ENABLE
2241 2816
2242# ifdef _WIN32 2817# ifdef _WIN32
2243# undef lstat 2818# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 2819# define lstat(a,b) _stati64 (a,b)
2245# endif 2820# endif
2246 2821
2247#define DEF_STAT_INTERVAL 5.0074891 2822#define DEF_STAT_INTERVAL 5.0074891
2823#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248#define MIN_STAT_INTERVAL 0.1074891 2824#define MIN_STAT_INTERVAL 0.1074891
2249 2825
2250static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2826static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251 2827
2252#if EV_USE_INOTIFY 2828#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 2829# define EV_INOTIFY_BUFSIZE 8192
… …
2257{ 2833{
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); 2834 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 2835
2260 if (w->wd < 0) 2836 if (w->wd < 0)
2261 { 2837 {
2838 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 */ 2839 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263 2840
2264 /* monitor some parent directory for speedup hints */ 2841 /* monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2842 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 2843 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2844 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 2845 {
2269 char path [4096]; 2846 char path [4096];
2270 strcpy (path, w->path); 2847 strcpy (path, w->path);
… …
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2851 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2852 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 2853
2277 char *pend = strrchr (path, '/'); 2854 char *pend = strrchr (path, '/');
2278 2855
2279 if (!pend) 2856 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 2857 break;
2281 2858
2282 *pend = 0; 2859 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 2860 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 2861 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2862 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 2863 }
2287 } 2864 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 2865
2291 if (w->wd >= 0) 2866 if (w->wd >= 0)
2867 {
2292 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2869
2870 /* now local changes will be tracked by inotify, but remote changes won't */
2871 /* unless the filesystem it known to be local, we therefore still poll */
2872 /* also do poll on <2.6.25, but with normal frequency */
2873 struct statfs sfs;
2874
2875 if (fs_2625 && !statfs (w->path, &sfs))
2876 if (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)
2882 return;
2883
2884 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885 ev_timer_again (EV_A_ &w->timer);
2886 }
2293} 2887}
2294 2888
2295static void noinline 2889static void noinline
2296infy_del (EV_P_ ev_stat *w) 2890infy_del (EV_P_ ev_stat *w)
2297{ 2891{
… …
2311 2905
2312static void noinline 2906static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2907infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 2908{
2315 if (slot < 0) 2909 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 2910 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2911 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 2912 infy_wd (EV_A_ slot, wd, ev);
2319 else 2913 else
2320 { 2914 {
2321 WL w_; 2915 WL w_;
… …
2327 2921
2328 if (w->wd == wd || wd == -1) 2922 if (w->wd == wd || wd == -1)
2329 { 2923 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2924 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 2925 {
2926 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332 w->wd = -1; 2927 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2928 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 2929 }
2335 2930
2336 stat_timer_cb (EV_A_ &w->timer, 0); 2931 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2349 2944
2350 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2946 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352} 2947}
2353 2948
2354void inline_size 2949inline_size void
2950check_2625 (EV_P)
2951{
2952 /* kernels < 2.6.25 are borked
2953 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954 */
2955 struct utsname buf;
2956 int major, minor, micro;
2957
2958 if (uname (&buf))
2959 return;
2960
2961 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962 return;
2963
2964 if (major < 2
2965 || (major == 2 && minor < 6)
2966 || (major == 2 && minor == 6 && micro < 25))
2967 return;
2968
2969 fs_2625 = 1;
2970}
2971
2972inline_size void
2355infy_init (EV_P) 2973infy_init (EV_P)
2356{ 2974{
2357 if (fs_fd != -2) 2975 if (fs_fd != -2)
2358 return; 2976 return;
2977
2978 fs_fd = -1;
2979
2980 check_2625 (EV_A);
2359 2981
2360 fs_fd = inotify_init (); 2982 fs_fd = inotify_init ();
2361 2983
2362 if (fs_fd >= 0) 2984 if (fs_fd >= 0)
2363 { 2985 {
… …
2365 ev_set_priority (&fs_w, EV_MAXPRI); 2987 ev_set_priority (&fs_w, EV_MAXPRI);
2366 ev_io_start (EV_A_ &fs_w); 2988 ev_io_start (EV_A_ &fs_w);
2367 } 2989 }
2368} 2990}
2369 2991
2370void inline_size 2992inline_size void
2371infy_fork (EV_P) 2993infy_fork (EV_P)
2372{ 2994{
2373 int slot; 2995 int slot;
2374 2996
2375 if (fs_fd < 0) 2997 if (fs_fd < 0)
… …
2391 w->wd = -1; 3013 w->wd = -1;
2392 3014
2393 if (fs_fd >= 0) 3015 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 3016 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 3017 else
2396 ev_timer_start (EV_A_ &w->timer); 3018 ev_timer_again (EV_A_ &w->timer);
2397 } 3019 }
2398
2399 } 3020 }
2400} 3021}
2401 3022
3023#endif
3024
3025#ifdef _WIN32
3026# define EV_LSTAT(p,b) _stati64 (p, b)
3027#else
3028# define EV_LSTAT(p,b) lstat (p, b)
2402#endif 3029#endif
2403 3030
2404void 3031void
2405ev_stat_stat (EV_P_ ev_stat *w) 3032ev_stat_stat (EV_P_ ev_stat *w)
2406{ 3033{
… …
2433 || w->prev.st_atime != w->attr.st_atime 3060 || w->prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 3061 || w->prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 3062 || w->prev.st_ctime != w->attr.st_ctime
2436 ) { 3063 ) {
2437 #if EV_USE_INOTIFY 3064 #if EV_USE_INOTIFY
3065 if (fs_fd >= 0)
3066 {
2438 infy_del (EV_A_ w); 3067 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 3068 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 3069 ev_stat_stat (EV_A_ w); /* avoid race... */
3070 }
2441 #endif 3071 #endif
2442 3072
2443 ev_feed_event (EV_A_ w, EV_STAT); 3073 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 3074 }
2445} 3075}
… …
2448ev_stat_start (EV_P_ ev_stat *w) 3078ev_stat_start (EV_P_ ev_stat *w)
2449{ 3079{
2450 if (expect_false (ev_is_active (w))) 3080 if (expect_false (ev_is_active (w)))
2451 return; 3081 return;
2452 3082
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); 3083 ev_stat_stat (EV_A_ w);
2458 3084
3085 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 3086 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 3087
2462 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3088 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)); 3089 ev_set_priority (&w->timer, ev_priority (w));
2464 3090
2465#if EV_USE_INOTIFY 3091#if EV_USE_INOTIFY
2466 infy_init (EV_A); 3092 infy_init (EV_A);
2467 3093
2468 if (fs_fd >= 0) 3094 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 3095 infy_add (EV_A_ w);
2470 else 3096 else
2471#endif 3097#endif
2472 ev_timer_start (EV_A_ &w->timer); 3098 ev_timer_again (EV_A_ &w->timer);
2473 3099
2474 ev_start (EV_A_ (W)w, 1); 3100 ev_start (EV_A_ (W)w, 1);
3101
3102 EV_FREQUENT_CHECK;
2475} 3103}
2476 3104
2477void 3105void
2478ev_stat_stop (EV_P_ ev_stat *w) 3106ev_stat_stop (EV_P_ ev_stat *w)
2479{ 3107{
2480 clear_pending (EV_A_ (W)w); 3108 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3109 if (expect_false (!ev_is_active (w)))
2482 return; 3110 return;
2483 3111
3112 EV_FREQUENT_CHECK;
3113
2484#if EV_USE_INOTIFY 3114#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 3115 infy_del (EV_A_ w);
2486#endif 3116#endif
2487 ev_timer_stop (EV_A_ &w->timer); 3117 ev_timer_stop (EV_A_ &w->timer);
2488 3118
2489 ev_stop (EV_A_ (W)w); 3119 ev_stop (EV_A_ (W)w);
3120
3121 EV_FREQUENT_CHECK;
2490} 3122}
2491#endif 3123#endif
2492 3124
2493#if EV_IDLE_ENABLE 3125#if EV_IDLE_ENABLE
2494void 3126void
… …
2496{ 3128{
2497 if (expect_false (ev_is_active (w))) 3129 if (expect_false (ev_is_active (w)))
2498 return; 3130 return;
2499 3131
2500 pri_adjust (EV_A_ (W)w); 3132 pri_adjust (EV_A_ (W)w);
3133
3134 EV_FREQUENT_CHECK;
2501 3135
2502 { 3136 {
2503 int active = ++idlecnt [ABSPRI (w)]; 3137 int active = ++idlecnt [ABSPRI (w)];
2504 3138
2505 ++idleall; 3139 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 3140 ev_start (EV_A_ (W)w, active);
2507 3141
2508 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3142 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509 idles [ABSPRI (w)][active - 1] = w; 3143 idles [ABSPRI (w)][active - 1] = w;
2510 } 3144 }
3145
3146 EV_FREQUENT_CHECK;
2511} 3147}
2512 3148
2513void 3149void
2514ev_idle_stop (EV_P_ ev_idle *w) 3150ev_idle_stop (EV_P_ ev_idle *w)
2515{ 3151{
2516 clear_pending (EV_A_ (W)w); 3152 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 3153 if (expect_false (!ev_is_active (w)))
2518 return; 3154 return;
2519 3155
3156 EV_FREQUENT_CHECK;
3157
2520 { 3158 {
2521 int active = ev_active (w); 3159 int active = ev_active (w);
2522 3160
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3161 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3162 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 3163
2526 ev_stop (EV_A_ (W)w); 3164 ev_stop (EV_A_ (W)w);
2527 --idleall; 3165 --idleall;
2528 } 3166 }
3167
3168 EV_FREQUENT_CHECK;
2529} 3169}
2530#endif 3170#endif
2531 3171
2532void 3172void
2533ev_prepare_start (EV_P_ ev_prepare *w) 3173ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 3174{
2535 if (expect_false (ev_is_active (w))) 3175 if (expect_false (ev_is_active (w)))
2536 return; 3176 return;
3177
3178 EV_FREQUENT_CHECK;
2537 3179
2538 ev_start (EV_A_ (W)w, ++preparecnt); 3180 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3181 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 3182 prepares [preparecnt - 1] = w;
3183
3184 EV_FREQUENT_CHECK;
2541} 3185}
2542 3186
2543void 3187void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 3188ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 3189{
2546 clear_pending (EV_A_ (W)w); 3190 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 3191 if (expect_false (!ev_is_active (w)))
2548 return; 3192 return;
2549 3193
3194 EV_FREQUENT_CHECK;
3195
2550 { 3196 {
2551 int active = ev_active (w); 3197 int active = ev_active (w);
2552 3198
2553 prepares [active - 1] = prepares [--preparecnt]; 3199 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 3200 ev_active (prepares [active - 1]) = active;
2555 } 3201 }
2556 3202
2557 ev_stop (EV_A_ (W)w); 3203 ev_stop (EV_A_ (W)w);
3204
3205 EV_FREQUENT_CHECK;
2558} 3206}
2559 3207
2560void 3208void
2561ev_check_start (EV_P_ ev_check *w) 3209ev_check_start (EV_P_ ev_check *w)
2562{ 3210{
2563 if (expect_false (ev_is_active (w))) 3211 if (expect_false (ev_is_active (w)))
2564 return; 3212 return;
3213
3214 EV_FREQUENT_CHECK;
2565 3215
2566 ev_start (EV_A_ (W)w, ++checkcnt); 3216 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3217 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 3218 checks [checkcnt - 1] = w;
3219
3220 EV_FREQUENT_CHECK;
2569} 3221}
2570 3222
2571void 3223void
2572ev_check_stop (EV_P_ ev_check *w) 3224ev_check_stop (EV_P_ ev_check *w)
2573{ 3225{
2574 clear_pending (EV_A_ (W)w); 3226 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 3227 if (expect_false (!ev_is_active (w)))
2576 return; 3228 return;
2577 3229
3230 EV_FREQUENT_CHECK;
3231
2578 { 3232 {
2579 int active = ev_active (w); 3233 int active = ev_active (w);
2580 3234
2581 checks [active - 1] = checks [--checkcnt]; 3235 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 3236 ev_active (checks [active - 1]) = active;
2583 } 3237 }
2584 3238
2585 ev_stop (EV_A_ (W)w); 3239 ev_stop (EV_A_ (W)w);
3240
3241 EV_FREQUENT_CHECK;
2586} 3242}
2587 3243
2588#if EV_EMBED_ENABLE 3244#if EV_EMBED_ENABLE
2589void noinline 3245void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 3246ev_embed_sweep (EV_P_ ev_embed *w)
… …
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3273 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618 } 3274 }
2619 } 3275 }
2620} 3276}
2621 3277
3278static void
3279embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3280{
3281 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282
3283 ev_embed_stop (EV_A_ w);
3284
3285 {
3286 struct ev_loop *loop = w->other;
3287
3288 ev_loop_fork (EV_A);
3289 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3290 }
3291
3292 ev_embed_start (EV_A_ w);
3293}
3294
2622#if 0 3295#if 0
2623static void 3296static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3297embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625{ 3298{
2626 ev_idle_stop (EV_A_ idle); 3299 ev_idle_stop (EV_A_ idle);
… …
2633 if (expect_false (ev_is_active (w))) 3306 if (expect_false (ev_is_active (w)))
2634 return; 3307 return;
2635 3308
2636 { 3309 {
2637 struct ev_loop *loop = w->other; 3310 struct ev_loop *loop = w->other;
2638 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3311 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); 3312 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640 } 3313 }
3314
3315 EV_FREQUENT_CHECK;
2641 3316
2642 ev_set_priority (&w->io, ev_priority (w)); 3317 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 3318 ev_io_start (EV_A_ &w->io);
2644 3319
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 3320 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 3321 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 3322 ev_prepare_start (EV_A_ &w->prepare);
2648 3323
3324 ev_fork_init (&w->fork, embed_fork_cb);
3325 ev_fork_start (EV_A_ &w->fork);
3326
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3327 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 3328
2651 ev_start (EV_A_ (W)w, 1); 3329 ev_start (EV_A_ (W)w, 1);
3330
3331 EV_FREQUENT_CHECK;
2652} 3332}
2653 3333
2654void 3334void
2655ev_embed_stop (EV_P_ ev_embed *w) 3335ev_embed_stop (EV_P_ ev_embed *w)
2656{ 3336{
2657 clear_pending (EV_A_ (W)w); 3337 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3338 if (expect_false (!ev_is_active (w)))
2659 return; 3339 return;
2660 3340
3341 EV_FREQUENT_CHECK;
3342
2661 ev_io_stop (EV_A_ &w->io); 3343 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 3344 ev_prepare_stop (EV_A_ &w->prepare);
3345 ev_fork_stop (EV_A_ &w->fork);
2663 3346
2664 ev_stop (EV_A_ (W)w); 3347 EV_FREQUENT_CHECK;
2665} 3348}
2666#endif 3349#endif
2667 3350
2668#if EV_FORK_ENABLE 3351#if EV_FORK_ENABLE
2669void 3352void
2670ev_fork_start (EV_P_ ev_fork *w) 3353ev_fork_start (EV_P_ ev_fork *w)
2671{ 3354{
2672 if (expect_false (ev_is_active (w))) 3355 if (expect_false (ev_is_active (w)))
2673 return; 3356 return;
3357
3358 EV_FREQUENT_CHECK;
2674 3359
2675 ev_start (EV_A_ (W)w, ++forkcnt); 3360 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3361 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 3362 forks [forkcnt - 1] = w;
3363
3364 EV_FREQUENT_CHECK;
2678} 3365}
2679 3366
2680void 3367void
2681ev_fork_stop (EV_P_ ev_fork *w) 3368ev_fork_stop (EV_P_ ev_fork *w)
2682{ 3369{
2683 clear_pending (EV_A_ (W)w); 3370 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3371 if (expect_false (!ev_is_active (w)))
2685 return; 3372 return;
2686 3373
3374 EV_FREQUENT_CHECK;
3375
2687 { 3376 {
2688 int active = ev_active (w); 3377 int active = ev_active (w);
2689 3378
2690 forks [active - 1] = forks [--forkcnt]; 3379 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3380 ev_active (forks [active - 1]) = active;
2692 } 3381 }
2693 3382
2694 ev_stop (EV_A_ (W)w); 3383 ev_stop (EV_A_ (W)w);
3384
3385 EV_FREQUENT_CHECK;
2695} 3386}
2696#endif 3387#endif
2697 3388
2698#if EV_ASYNC_ENABLE 3389#if EV_ASYNC_ENABLE
2699void 3390void
… …
2701{ 3392{
2702 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
2703 return; 3394 return;
2704 3395
2705 evpipe_init (EV_A); 3396 evpipe_init (EV_A);
3397
3398 EV_FREQUENT_CHECK;
2706 3399
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3400 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3401 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3402 asyncs [asynccnt - 1] = w;
3403
3404 EV_FREQUENT_CHECK;
2710} 3405}
2711 3406
2712void 3407void
2713ev_async_stop (EV_P_ ev_async *w) 3408ev_async_stop (EV_P_ ev_async *w)
2714{ 3409{
2715 clear_pending (EV_A_ (W)w); 3410 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3411 if (expect_false (!ev_is_active (w)))
2717 return; 3412 return;
2718 3413
3414 EV_FREQUENT_CHECK;
3415
2719 { 3416 {
2720 int active = ev_active (w); 3417 int active = ev_active (w);
2721 3418
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3419 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3420 ev_active (asyncs [active - 1]) = active;
2724 } 3421 }
2725 3422
2726 ev_stop (EV_A_ (W)w); 3423 ev_stop (EV_A_ (W)w);
3424
3425 EV_FREQUENT_CHECK;
2727} 3426}
2728 3427
2729void 3428void
2730ev_async_send (EV_P_ ev_async *w) 3429ev_async_send (EV_P_ ev_async *w)
2731{ 3430{
… …
2748once_cb (EV_P_ struct ev_once *once, int revents) 3447once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3448{
2750 void (*cb)(int revents, void *arg) = once->cb; 3449 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3450 void *arg = once->arg;
2752 3451
2753 ev_io_stop (EV_A_ &once->io); 3452 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3453 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3454 ev_free (once);
2756 3455
2757 cb (revents, arg); 3456 cb (revents, arg);
2758} 3457}
2759 3458
2760static void 3459static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3460once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3461{
2763 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3462 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3463
3464 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764} 3465}
2765 3466
2766static void 3467static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3468once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3469{
2769 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3470 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3471
3472 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770} 3473}
2771 3474
2772void 3475void
2773ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3476ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774{ 3477{
… …
2796 ev_timer_set (&once->to, timeout, 0.); 3499 ev_timer_set (&once->to, timeout, 0.);
2797 ev_timer_start (EV_A_ &once->to); 3500 ev_timer_start (EV_A_ &once->to);
2798 } 3501 }
2799} 3502}
2800 3503
3504/*****************************************************************************/
3505
3506#if EV_WALK_ENABLE
3507void
3508ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3509{
3510 int i, j;
3511 ev_watcher_list *wl, *wn;
3512
3513 if (types & (EV_IO | EV_EMBED))
3514 for (i = 0; i < anfdmax; ++i)
3515 for (wl = anfds [i].head; wl; )
3516 {
3517 wn = wl->next;
3518
3519#if EV_EMBED_ENABLE
3520 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3521 {
3522 if (types & EV_EMBED)
3523 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3524 }
3525 else
3526#endif
3527#if EV_USE_INOTIFY
3528 if (ev_cb ((ev_io *)wl) == infy_cb)
3529 ;
3530 else
3531#endif
3532 if ((ev_io *)wl != &pipe_w)
3533 if (types & EV_IO)
3534 cb (EV_A_ EV_IO, wl);
3535
3536 wl = wn;
3537 }
3538
3539 if (types & (EV_TIMER | EV_STAT))
3540 for (i = timercnt + HEAP0; i-- > HEAP0; )
3541#if EV_STAT_ENABLE
3542 /*TODO: timer is not always active*/
3543 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3544 {
3545 if (types & EV_STAT)
3546 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3547 }
3548 else
3549#endif
3550 if (types & EV_TIMER)
3551 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3552
3553#if EV_PERIODIC_ENABLE
3554 if (types & EV_PERIODIC)
3555 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3556 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3557#endif
3558
3559#if EV_IDLE_ENABLE
3560 if (types & EV_IDLE)
3561 for (j = NUMPRI; i--; )
3562 for (i = idlecnt [j]; i--; )
3563 cb (EV_A_ EV_IDLE, idles [j][i]);
3564#endif
3565
3566#if EV_FORK_ENABLE
3567 if (types & EV_FORK)
3568 for (i = forkcnt; i--; )
3569 if (ev_cb (forks [i]) != embed_fork_cb)
3570 cb (EV_A_ EV_FORK, forks [i]);
3571#endif
3572
3573#if EV_ASYNC_ENABLE
3574 if (types & EV_ASYNC)
3575 for (i = asynccnt; i--; )
3576 cb (EV_A_ EV_ASYNC, asyncs [i]);
3577#endif
3578
3579 if (types & EV_PREPARE)
3580 for (i = preparecnt; i--; )
3581#if EV_EMBED_ENABLE
3582 if (ev_cb (prepares [i]) != embed_prepare_cb)
3583#endif
3584 cb (EV_A_ EV_PREPARE, prepares [i]);
3585
3586 if (types & EV_CHECK)
3587 for (i = checkcnt; i--; )
3588 cb (EV_A_ EV_CHECK, checks [i]);
3589
3590 if (types & EV_SIGNAL)
3591 for (i = 0; i < signalmax; ++i)
3592 for (wl = signals [i].head; wl; )
3593 {
3594 wn = wl->next;
3595 cb (EV_A_ EV_SIGNAL, wl);
3596 wl = wn;
3597 }
3598
3599 if (types & EV_CHILD)
3600 for (i = EV_PID_HASHSIZE; i--; )
3601 for (wl = childs [i]; wl; )
3602 {
3603 wn = wl->next;
3604 cb (EV_A_ EV_CHILD, wl);
3605 wl = wn;
3606 }
3607/* EV_STAT 0x00001000 /* stat data changed */
3608/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3609}
3610#endif
3611
2801#if EV_MULTIPLICITY 3612#if EV_MULTIPLICITY
2802 #include "ev_wrap.h" 3613 #include "ev_wrap.h"
2803#endif 3614#endif
2804 3615
2805#ifdef __cplusplus 3616#ifdef __cplusplus

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