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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.304 by root, Sun Jul 19 03:12:28 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#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1
194# else
195# define EV_USE_CLOCK_SYSCALL 0
196# endif
197#endif
198
168#ifndef EV_USE_MONOTONIC 199#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1
202# else
169# define EV_USE_MONOTONIC 0 203# define EV_USE_MONOTONIC 0
204# endif
170#endif 205#endif
171 206
172#ifndef EV_USE_REALTIME 207#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 209#endif
175 210
176#ifndef EV_USE_NANOSLEEP 211#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1
214# else
177# define EV_USE_NANOSLEEP 0 215# define EV_USE_NANOSLEEP 0
216# endif
178#endif 217#endif
179 218
180#ifndef EV_USE_SELECT 219#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 220# define EV_USE_SELECT 1
182#endif 221#endif
… …
235# else 274# else
236# define EV_USE_EVENTFD 0 275# define EV_USE_EVENTFD 0
237# endif 276# endif
238#endif 277#endif
239 278
279#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
281# define EV_USE_SIGNALFD 1
282# else
283# define EV_USE_SIGNALFD 0
284# endif
285#endif
286
287#if 0 /* debugging */
288# define EV_VERIFY 3
289# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1
291#endif
292
293#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL
295#endif
296
240#ifndef EV_USE_4HEAP 297#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 298# define EV_USE_4HEAP !EV_MINIMAL
242#endif 299#endif
243 300
244#ifndef EV_HEAP_CACHE_AT 301#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 302# define EV_HEAP_CACHE_AT !EV_MINIMAL
303#endif
304
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h>
309# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1
313# else
314# undef EV_USE_CLOCK_SYSCALL
315# define EV_USE_CLOCK_SYSCALL 0
316# endif
246#endif 317#endif
247 318
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 319/* this block fixes any misconfiguration where we know we run into trouble otherwise */
249 320
250#ifndef CLOCK_MONOTONIC 321#ifndef CLOCK_MONOTONIC
… …
267# include <sys/select.h> 338# include <sys/select.h>
268# endif 339# endif
269#endif 340#endif
270 341
271#if EV_USE_INOTIFY 342#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h>
272# include <sys/inotify.h> 345# include <sys/inotify.h>
346/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
347# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0
350# endif
273#endif 351#endif
274 352
275#if EV_SELECT_IS_WINSOCKET 353#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 354# include <winsock.h>
277#endif 355#endif
278 356
279#if EV_USE_EVENTFD 357#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 358/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 359# include <stdint.h>
360# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK
362# endif
363# ifndef EFD_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC
365# endif
282# ifdef __cplusplus 366# ifdef __cplusplus
283extern "C" { 367extern "C" {
284# endif 368# endif
285int eventfd (unsigned int initval, int flags); 369int eventfd (unsigned int initval, int flags);
286# ifdef __cplusplus 370# ifdef __cplusplus
287} 371}
288# endif 372# endif
289#endif 373#endif
290 374
375#if EV_USE_SIGNALFD
376# include <sys/signalfd.h>
377#endif
378
291/**/ 379/**/
292 380
293/* undefined or zero: no verification done or available */
294/* 1 or higher: ev_loop_verify function available */
295/* 2 or higher: ev_loop_verify is called frequently */
296#define EV_VERIFY 1
297
298#if EV_VERIFY > 1 381#if EV_VERIFY >= 3
299# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300#else 383#else
301# define EV_FREQUENT_CHECK do { } while (0) 384# define EV_FREQUENT_CHECK do { } while (0)
302#endif 385#endif
303 386
… …
334# define inline_speed static noinline 417# define inline_speed static noinline
335#else 418#else
336# define inline_speed static inline 419# define inline_speed static inline
337#endif 420#endif
338 421
339#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423
424#if EV_MINPRI == EV_MAXPRI
425# define ABSPRI(w) (((W)w), 0)
426#else
340#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 427# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
428#endif
341 429
342#define EMPTY /* required for microsofts broken pseudo-c compiler */ 430#define EMPTY /* required for microsofts broken pseudo-c compiler */
343#define EMPTY2(a,b) /* used to suppress some warnings */ 431#define EMPTY2(a,b) /* used to suppress some warnings */
344 432
345typedef ev_watcher *W; 433typedef ev_watcher *W;
… …
347typedef ev_watcher_time *WT; 435typedef ev_watcher_time *WT;
348 436
349#define ev_active(w) ((W)(w))->active 437#define ev_active(w) ((W)(w))->active
350#define ev_at(w) ((WT)(w))->at 438#define ev_at(w) ((WT)(w))->at
351 439
352#if EV_USE_MONOTONIC 440#if EV_USE_REALTIME
353/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 441/* sig_atomic_t is used to avoid per-thread variables or locking but still */
354/* giving it a reasonably high chance of working on typical architetcures */ 442/* giving it a reasonably high chance of working on typical architetcures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif
445
446#if EV_USE_MONOTONIC
355static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
356#endif 448#endif
357 449
358#ifdef _WIN32 450#ifdef _WIN32
359# include "ev_win32.c" 451# include "ev_win32.c"
… …
368{ 460{
369 syserr_cb = cb; 461 syserr_cb = cb;
370} 462}
371 463
372static void noinline 464static void noinline
373syserr (const char *msg) 465ev_syserr (const char *msg)
374{ 466{
375 if (!msg) 467 if (!msg)
376 msg = "(libev) system error"; 468 msg = "(libev) system error";
377 469
378 if (syserr_cb) 470 if (syserr_cb)
… …
424#define ev_malloc(size) ev_realloc (0, (size)) 516#define ev_malloc(size) ev_realloc (0, (size))
425#define ev_free(ptr) ev_realloc ((ptr), 0) 517#define ev_free(ptr) ev_realloc ((ptr), 0)
426 518
427/*****************************************************************************/ 519/*****************************************************************************/
428 520
521/* set in reify when reification needed */
522#define EV_ANFD_REIFY 1
523
524/* file descriptor info structure */
429typedef struct 525typedef struct
430{ 526{
431 WL head; 527 WL head;
432 unsigned char events; 528 unsigned char events; /* the events watched for */
529 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
433 unsigned char reify; 531 unsigned char unused;
532#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif
434#if EV_SELECT_IS_WINSOCKET 535#if EV_SELECT_IS_WINSOCKET
435 SOCKET handle; 536 SOCKET handle;
436#endif 537#endif
437} ANFD; 538} ANFD;
438 539
540/* stores the pending event set for a given watcher */
439typedef struct 541typedef struct
440{ 542{
441 W w; 543 W w;
442 int events; 544 int events; /* the pending event set for the given watcher */
443} ANPENDING; 545} ANPENDING;
444 546
445#if EV_USE_INOTIFY 547#if EV_USE_INOTIFY
446/* hash table entry per inotify-id */ 548/* hash table entry per inotify-id */
447typedef struct 549typedef struct
… …
450} ANFS; 552} ANFS;
451#endif 553#endif
452 554
453/* Heap Entry */ 555/* Heap Entry */
454#if EV_HEAP_CACHE_AT 556#if EV_HEAP_CACHE_AT
557 /* a heap element */
455 typedef struct { 558 typedef struct {
456 ev_tstamp at; 559 ev_tstamp at;
457 WT w; 560 WT w;
458 } ANHE; 561 } ANHE;
459 562
460 #define ANHE_w(he) (he).w /* access watcher, read-write */ 563 #define ANHE_w(he) (he).w /* access watcher, read-write */
461 #define ANHE_at(he) (he).at /* access cached at, read-only */ 564 #define ANHE_at(he) (he).at /* access cached at, read-only */
462 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 565 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463#else 566#else
567 /* a heap element */
464 typedef WT ANHE; 568 typedef WT ANHE;
465 569
466 #define ANHE_w(he) (he) 570 #define ANHE_w(he) (he)
467 #define ANHE_at(he) (he)->at 571 #define ANHE_at(he) (he)->at
468 #define ANHE_at_cache(he) 572 #define ANHE_at_cache(he)
… …
492 596
493 static int ev_default_loop_ptr; 597 static int ev_default_loop_ptr;
494 598
495#endif 599#endif
496 600
601#if EV_MINIMAL < 2
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else
606# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif
610
611#define EVUNLOOP_RECURSE 0x80
612
497/*****************************************************************************/ 613/*****************************************************************************/
498 614
615#ifndef EV_HAVE_EV_TIME
499ev_tstamp 616ev_tstamp
500ev_time (void) 617ev_time (void)
501{ 618{
502#if EV_USE_REALTIME 619#if EV_USE_REALTIME
620 if (expect_true (have_realtime))
621 {
503 struct timespec ts; 622 struct timespec ts;
504 clock_gettime (CLOCK_REALTIME, &ts); 623 clock_gettime (CLOCK_REALTIME, &ts);
505 return ts.tv_sec + ts.tv_nsec * 1e-9; 624 return ts.tv_sec + ts.tv_nsec * 1e-9;
506#else 625 }
626#endif
627
507 struct timeval tv; 628 struct timeval tv;
508 gettimeofday (&tv, 0); 629 gettimeofday (&tv, 0);
509 return tv.tv_sec + tv.tv_usec * 1e-6; 630 return tv.tv_sec + tv.tv_usec * 1e-6;
510#endif
511} 631}
632#endif
512 633
513ev_tstamp inline_size 634inline_size ev_tstamp
514get_clock (void) 635get_clock (void)
515{ 636{
516#if EV_USE_MONOTONIC 637#if EV_USE_MONOTONIC
517 if (expect_true (have_monotonic)) 638 if (expect_true (have_monotonic))
518 { 639 {
… …
551 struct timeval tv; 672 struct timeval tv;
552 673
553 tv.tv_sec = (time_t)delay; 674 tv.tv_sec = (time_t)delay;
554 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555 676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */
556 select (0, 0, 0, 0, &tv); 680 select (0, 0, 0, 0, &tv);
557#endif 681#endif
558 } 682 }
559} 683}
560 684
561/*****************************************************************************/ 685/*****************************************************************************/
562 686
563#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
564 688
565int inline_size 689/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */
691inline_size int
566array_nextsize (int elem, int cur, int cnt) 692array_nextsize (int elem, int cur, int cnt)
567{ 693{
568 int ncur = cur + 1; 694 int ncur = cur + 1;
569 695
570 do 696 do
… …
587array_realloc (int elem, void *base, int *cur, int cnt) 713array_realloc (int elem, void *base, int *cur, int cnt)
588{ 714{
589 *cur = array_nextsize (elem, *cur, cnt); 715 *cur = array_nextsize (elem, *cur, cnt);
590 return ev_realloc (base, elem * *cur); 716 return ev_realloc (base, elem * *cur);
591} 717}
718
719#define array_init_zero(base,count) \
720 memset ((void *)(base), 0, sizeof (*(base)) * (count))
592 721
593#define array_needsize(type,base,cur,cnt,init) \ 722#define array_needsize(type,base,cur,cnt,init) \
594 if (expect_false ((cnt) > (cur))) \ 723 if (expect_false ((cnt) > (cur))) \
595 { \ 724 { \
596 int ocur_ = (cur); \ 725 int ocur_ = (cur); \
… …
608 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 737 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609 } 738 }
610#endif 739#endif
611 740
612#define array_free(stem, idx) \ 741#define array_free(stem, idx) \
613 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 742 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
614 743
615/*****************************************************************************/ 744/*****************************************************************************/
745
746/* dummy callback for pending events */
747static void noinline
748pendingcb (EV_P_ ev_prepare *w, int revents)
749{
750}
616 751
617void noinline 752void noinline
618ev_feed_event (EV_P_ void *w, int revents) 753ev_feed_event (EV_P_ void *w, int revents)
619{ 754{
620 W w_ = (W)w; 755 W w_ = (W)w;
… …
629 pendings [pri][w_->pending - 1].w = w_; 764 pendings [pri][w_->pending - 1].w = w_;
630 pendings [pri][w_->pending - 1].events = revents; 765 pendings [pri][w_->pending - 1].events = revents;
631 } 766 }
632} 767}
633 768
634void inline_speed 769inline_speed void
770feed_reverse (EV_P_ W w)
771{
772 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
773 rfeeds [rfeedcnt++] = w;
774}
775
776inline_size void
777feed_reverse_done (EV_P_ int revents)
778{
779 do
780 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
781 while (rfeedcnt);
782}
783
784inline_speed void
635queue_events (EV_P_ W *events, int eventcnt, int type) 785queue_events (EV_P_ W *events, int eventcnt, int type)
636{ 786{
637 int i; 787 int i;
638 788
639 for (i = 0; i < eventcnt; ++i) 789 for (i = 0; i < eventcnt; ++i)
640 ev_feed_event (EV_A_ events [i], type); 790 ev_feed_event (EV_A_ events [i], type);
641} 791}
642 792
643/*****************************************************************************/ 793/*****************************************************************************/
644 794
645void inline_size 795inline_speed void
646anfds_init (ANFD *base, int count)
647{
648 while (count--)
649 {
650 base->head = 0;
651 base->events = EV_NONE;
652 base->reify = 0;
653
654 ++base;
655 }
656}
657
658void inline_speed
659fd_event (EV_P_ int fd, int revents) 796fd_event_nc (EV_P_ int fd, int revents)
660{ 797{
661 ANFD *anfd = anfds + fd; 798 ANFD *anfd = anfds + fd;
662 ev_io *w; 799 ev_io *w;
663 800
664 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
668 if (ev) 805 if (ev)
669 ev_feed_event (EV_A_ (W)w, ev); 806 ev_feed_event (EV_A_ (W)w, ev);
670 } 807 }
671} 808}
672 809
810/* do not submit kernel events for fds that have reify set */
811/* because that means they changed while we were polling for new events */
812inline_speed void
813fd_event (EV_P_ int fd, int revents)
814{
815 ANFD *anfd = anfds + fd;
816
817 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents);
819}
820
673void 821void
674ev_feed_fd_event (EV_P_ int fd, int revents) 822ev_feed_fd_event (EV_P_ int fd, int revents)
675{ 823{
676 if (fd >= 0 && fd < anfdmax) 824 if (fd >= 0 && fd < anfdmax)
677 fd_event (EV_A_ fd, revents); 825 fd_event_nc (EV_A_ fd, revents);
678} 826}
679 827
680void inline_size 828/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */
830inline_size void
681fd_reify (EV_P) 831fd_reify (EV_P)
682{ 832{
683 int i; 833 int i;
684 834
685 for (i = 0; i < fdchangecnt; ++i) 835 for (i = 0; i < fdchangecnt; ++i)
… …
694 events |= (unsigned char)w->events; 844 events |= (unsigned char)w->events;
695 845
696#if EV_SELECT_IS_WINSOCKET 846#if EV_SELECT_IS_WINSOCKET
697 if (events) 847 if (events)
698 { 848 {
699 unsigned long argp; 849 unsigned long arg;
700 #ifdef EV_FD_TO_WIN32_HANDLE 850 #ifdef EV_FD_TO_WIN32_HANDLE
701 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702 #else 852 #else
703 anfd->handle = _get_osfhandle (fd); 853 anfd->handle = _get_osfhandle (fd);
704 #endif 854 #endif
705 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
706 } 856 }
707#endif 857#endif
708 858
709 { 859 {
710 unsigned char o_events = anfd->events; 860 unsigned char o_events = anfd->events;
711 unsigned char o_reify = anfd->reify; 861 unsigned char o_reify = anfd->reify;
712 862
713 anfd->reify = 0; 863 anfd->reify = 0;
714 anfd->events = events; 864 anfd->events = events;
715 865
716 if (o_events != events || o_reify & EV_IOFDSET) 866 if (o_events != events || o_reify & EV__IOFDSET)
717 backend_modify (EV_A_ fd, o_events, events); 867 backend_modify (EV_A_ fd, o_events, events);
718 } 868 }
719 } 869 }
720 870
721 fdchangecnt = 0; 871 fdchangecnt = 0;
722} 872}
723 873
724void inline_size 874/* something about the given fd changed */
875inline_size void
725fd_change (EV_P_ int fd, int flags) 876fd_change (EV_P_ int fd, int flags)
726{ 877{
727 unsigned char reify = anfds [fd].reify; 878 unsigned char reify = anfds [fd].reify;
728 anfds [fd].reify |= flags; 879 anfds [fd].reify |= flags;
729 880
… …
733 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 884 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734 fdchanges [fdchangecnt - 1] = fd; 885 fdchanges [fdchangecnt - 1] = fd;
735 } 886 }
736} 887}
737 888
738void inline_speed 889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void
739fd_kill (EV_P_ int fd) 891fd_kill (EV_P_ int fd)
740{ 892{
741 ev_io *w; 893 ev_io *w;
742 894
743 while ((w = (ev_io *)anfds [fd].head)) 895 while ((w = (ev_io *)anfds [fd].head))
… …
745 ev_io_stop (EV_A_ w); 897 ev_io_stop (EV_A_ w);
746 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
747 } 899 }
748} 900}
749 901
750int inline_size 902/* check whether the given fd is atcually valid, for error recovery */
903inline_size int
751fd_valid (int fd) 904fd_valid (int fd)
752{ 905{
753#ifdef _WIN32 906#ifdef _WIN32
754 return _get_osfhandle (fd) != -1; 907 return _get_osfhandle (fd) != -1;
755#else 908#else
… …
763{ 916{
764 int fd; 917 int fd;
765 918
766 for (fd = 0; fd < anfdmax; ++fd) 919 for (fd = 0; fd < anfdmax; ++fd)
767 if (anfds [fd].events) 920 if (anfds [fd].events)
768 if (!fd_valid (fd) == -1 && errno == EBADF) 921 if (!fd_valid (fd) && errno == EBADF)
769 fd_kill (EV_A_ fd); 922 fd_kill (EV_A_ fd);
770} 923}
771 924
772/* called on ENOMEM in select/poll to kill some fds and retry */ 925/* called on ENOMEM in select/poll to kill some fds and retry */
773static void noinline 926static void noinline
… …
791 944
792 for (fd = 0; fd < anfdmax; ++fd) 945 for (fd = 0; fd < anfdmax; ++fd)
793 if (anfds [fd].events) 946 if (anfds [fd].events)
794 { 947 {
795 anfds [fd].events = 0; 948 anfds [fd].events = 0;
949 anfds [fd].emask = 0;
796 fd_change (EV_A_ fd, EV_IOFDSET | 1); 950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
797 } 951 }
798} 952}
799 953
800/*****************************************************************************/ 954/*****************************************************************************/
801 955
… …
817#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 971#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 972#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819#define UPHEAP_DONE(p,k) ((p) == (k)) 973#define UPHEAP_DONE(p,k) ((p) == (k))
820 974
821/* away from the root */ 975/* away from the root */
822void inline_speed 976inline_speed void
823downheap (ANHE *heap, int N, int k) 977downheap (ANHE *heap, int N, int k)
824{ 978{
825 ANHE he = heap [k]; 979 ANHE he = heap [k];
826 ANHE *E = heap + N + HEAP0; 980 ANHE *E = heap + N + HEAP0;
827 981
… …
867#define HEAP0 1 1021#define HEAP0 1
868#define HPARENT(k) ((k) >> 1) 1022#define HPARENT(k) ((k) >> 1)
869#define UPHEAP_DONE(p,k) (!(p)) 1023#define UPHEAP_DONE(p,k) (!(p))
870 1024
871/* away from the root */ 1025/* away from the root */
872void inline_speed 1026inline_speed void
873downheap (ANHE *heap, int N, int k) 1027downheap (ANHE *heap, int N, int k)
874{ 1028{
875 ANHE he = heap [k]; 1029 ANHE he = heap [k];
876 1030
877 for (;;) 1031 for (;;)
… …
897 ev_active (ANHE_w (he)) = k; 1051 ev_active (ANHE_w (he)) = k;
898} 1052}
899#endif 1053#endif
900 1054
901/* towards the root */ 1055/* towards the root */
902void inline_speed 1056inline_speed void
903upheap (ANHE *heap, int k) 1057upheap (ANHE *heap, int k)
904{ 1058{
905 ANHE he = heap [k]; 1059 ANHE he = heap [k];
906 1060
907 for (;;) 1061 for (;;)
… …
918 1072
919 heap [k] = he; 1073 heap [k] = he;
920 ev_active (ANHE_w (he)) = k; 1074 ev_active (ANHE_w (he)) = k;
921} 1075}
922 1076
923void inline_size 1077/* move an element suitably so it is in a correct place */
1078inline_size void
924adjustheap (ANHE *heap, int N, int k) 1079adjustheap (ANHE *heap, int N, int k)
925{ 1080{
926 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927 upheap (heap, k); 1082 upheap (heap, k);
928 else 1083 else
929 downheap (heap, N, k); 1084 downheap (heap, N, k);
930} 1085}
931 1086
932/* rebuild the heap: this function is used only once and executed rarely */ 1087/* rebuild the heap: this function is used only once and executed rarely */
933void inline_size 1088inline_size void
934reheap (ANHE *heap, int N) 1089reheap (ANHE *heap, int N)
935{ 1090{
936 int i; 1091 int i;
1092
937 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1093 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1094 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939 for (i = 0; i < N; ++i) 1095 for (i = 0; i < N; ++i)
940 upheap (heap, i + HEAP0); 1096 upheap (heap, i + HEAP0);
941} 1097}
942 1098
943#if EV_VERIFY
944static void
945checkheap (ANHE *heap, int N)
946{
947 int i;
948
949 for (i = HEAP0; i < N + HEAP0; ++i)
950 {
951 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954 }
955}
956#endif
957
958/*****************************************************************************/ 1099/*****************************************************************************/
959 1100
1101/* associate signal watchers to a signal signal */
960typedef struct 1102typedef struct
961{ 1103{
962 WL head; 1104 WL head;
963 EV_ATOMIC_T gotsig; 1105 EV_ATOMIC_T gotsig;
964} ANSIG; 1106} ANSIG;
… …
966static ANSIG *signals; 1108static ANSIG *signals;
967static int signalmax; 1109static int signalmax;
968 1110
969static EV_ATOMIC_T gotsig; 1111static EV_ATOMIC_T gotsig;
970 1112
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982
983/*****************************************************************************/ 1113/*****************************************************************************/
984 1114
985void inline_speed 1115/* used to prepare libev internal fd's */
1116/* this is not fork-safe */
1117inline_speed void
986fd_intern (int fd) 1118fd_intern (int fd)
987{ 1119{
988#ifdef _WIN32 1120#ifdef _WIN32
989 int arg = 1; 1121 unsigned long arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991#else 1123#else
992 fcntl (fd, F_SETFD, FD_CLOEXEC); 1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
993 fcntl (fd, F_SETFL, O_NONBLOCK); 1125 fcntl (fd, F_SETFL, O_NONBLOCK);
994#endif 1126#endif
995} 1127}
996 1128
997static void noinline 1129static void noinline
998evpipe_init (EV_P) 1130evpipe_init (EV_P)
999{ 1131{
1000 if (!ev_is_active (&pipeev)) 1132 if (!ev_is_active (&pipe_w))
1001 { 1133 {
1002#if EV_USE_EVENTFD 1134#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL)
1003 if ((evfd = eventfd (0, 0)) >= 0) 1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1004 { 1140 {
1005 evpipe [0] = -1; 1141 evpipe [0] = -1;
1006 fd_intern (evfd); 1142 fd_intern (evfd); /* doing it twice doesn't hurt */
1007 ev_io_set (&pipeev, evfd, EV_READ); 1143 ev_io_set (&pipe_w, evfd, EV_READ);
1008 } 1144 }
1009 else 1145 else
1010#endif 1146#endif
1011 { 1147 {
1012 while (pipe (evpipe)) 1148 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1149 ev_syserr ("(libev) error creating signal/async pipe");
1014 1150
1015 fd_intern (evpipe [0]); 1151 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1152 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1153 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018 } 1154 }
1019 1155
1020 ev_io_start (EV_A_ &pipeev); 1156 ev_io_start (EV_A_ &pipe_w);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1158 }
1023} 1159}
1024 1160
1025void inline_size 1161inline_size void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1163{
1028 if (!*flag) 1164 if (!*flag)
1029 { 1165 {
1030 int old_errno = errno; /* save errno because write might clobber it */ 1166 int old_errno = errno; /* save errno because write might clobber it */
… …
1043 1179
1044 errno = old_errno; 1180 errno = old_errno;
1045 } 1181 }
1046} 1182}
1047 1183
1184/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */
1048static void 1186static void
1049pipecb (EV_P_ ev_io *iow, int revents) 1187pipecb (EV_P_ ev_io *iow, int revents)
1050{ 1188{
1051#if EV_USE_EVENTFD 1189#if EV_USE_EVENTFD
1052 if (evfd >= 0) 1190 if (evfd >= 0)
… …
1108ev_feed_signal_event (EV_P_ int signum) 1246ev_feed_signal_event (EV_P_ int signum)
1109{ 1247{
1110 WL w; 1248 WL w;
1111 1249
1112#if EV_MULTIPLICITY 1250#if EV_MULTIPLICITY
1113 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1114#endif 1252#endif
1115 1253
1116 --signum; 1254 --signum;
1117 1255
1118 if (signum < 0 || signum >= signalmax) 1256 if (signum < 0 || signum >= signalmax)
… …
1122 1260
1123 for (w = signals [signum].head; w; w = w->next) 1261 for (w = signals [signum].head; w; w = w->next)
1124 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1125} 1263}
1126 1264
1265#if EV_USE_SIGNALFD
1266static void
1267sigfdcb (EV_P_ ev_io *iow, int revents)
1268{
1269 struct signalfd_siginfo si[4], *sip;
1270
1271 for (;;)
1272 {
1273 ssize_t res = read (sigfd, si, sizeof (si));
1274
1275 /* not ISO-C, as res might be -1, but works with SuS */
1276 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1277 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1278
1279 if (res < (ssize_t)sizeof (si))
1280 break;
1281 }
1282}
1283#endif
1284
1127/*****************************************************************************/ 1285/*****************************************************************************/
1128 1286
1129static WL childs [EV_PID_HASHSIZE]; 1287static WL childs [EV_PID_HASHSIZE];
1130 1288
1131#ifndef _WIN32 1289#ifndef _WIN32
… …
1134 1292
1135#ifndef WIFCONTINUED 1293#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1294# define WIFCONTINUED(status) 0
1137#endif 1295#endif
1138 1296
1139void inline_speed 1297/* handle a single child status event */
1298inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1299child_reap (EV_P_ int chain, int pid, int status)
1141{ 1300{
1142 ev_child *w; 1301 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1303
… …
1157 1316
1158#ifndef WCONTINUED 1317#ifndef WCONTINUED
1159# define WCONTINUED 0 1318# define WCONTINUED 0
1160#endif 1319#endif
1161 1320
1321/* called on sigchld etc., calls waitpid */
1162static void 1322static void
1163childcb (EV_P_ ev_signal *sw, int revents) 1323childcb (EV_P_ ev_signal *sw, int revents)
1164{ 1324{
1165 int pid, status; 1325 int pid, status;
1166 1326
… …
1247 /* kqueue is borked on everything but netbsd apparently */ 1407 /* kqueue is borked on everything but netbsd apparently */
1248 /* it usually doesn't work correctly on anything but sockets and pipes */ 1408 /* it usually doesn't work correctly on anything but sockets and pipes */
1249 flags &= ~EVBACKEND_KQUEUE; 1409 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1410#endif
1251#ifdef __APPLE__ 1411#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1412 /* only select works correctly on that "unix-certified" platform */
1253 flags &= ~EVBACKEND_POLL; 1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1254#endif 1415#endif
1255 1416
1256 return flags; 1417 return flags;
1257} 1418}
1258 1419
… …
1272ev_backend (EV_P) 1433ev_backend (EV_P)
1273{ 1434{
1274 return backend; 1435 return backend;
1275} 1436}
1276 1437
1438#if EV_MINIMAL < 2
1277unsigned int 1439unsigned int
1278ev_loop_count (EV_P) 1440ev_loop_count (EV_P)
1279{ 1441{
1280 return loop_count; 1442 return loop_count;
1281} 1443}
1282 1444
1445unsigned int
1446ev_loop_depth (EV_P)
1447{
1448 return loop_depth;
1449}
1450
1283void 1451void
1284ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1453{
1286 io_blocktime = interval; 1454 io_blocktime = interval;
1287} 1455}
… …
1290ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1459{
1292 timeout_blocktime = interval; 1460 timeout_blocktime = interval;
1293} 1461}
1294 1462
1463void
1464ev_set_userdata (EV_P_ void *data)
1465{
1466 userdata = data;
1467}
1468
1469void *
1470ev_userdata (EV_P)
1471{
1472 return userdata;
1473}
1474
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1476{
1477 invoke_cb = invoke_pending_cb;
1478}
1479
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1481{
1482 release_cb = release;
1483 acquire_cb = acquire;
1484}
1485#endif
1486
1487/* initialise a loop structure, must be zero-initialised */
1295static void noinline 1488static void noinline
1296loop_init (EV_P_ unsigned int flags) 1489loop_init (EV_P_ unsigned int flags)
1297{ 1490{
1298 if (!backend) 1491 if (!backend)
1299 { 1492 {
1493#if EV_USE_REALTIME
1494 if (!have_realtime)
1495 {
1496 struct timespec ts;
1497
1498 if (!clock_gettime (CLOCK_REALTIME, &ts))
1499 have_realtime = 1;
1500 }
1501#endif
1502
1300#if EV_USE_MONOTONIC 1503#if EV_USE_MONOTONIC
1504 if (!have_monotonic)
1301 { 1505 {
1302 struct timespec ts; 1506 struct timespec ts;
1507
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1509 have_monotonic = 1;
1305 } 1510 }
1306#endif 1511#endif
1307 1512
1308 ev_rt_now = ev_time (); 1513 ev_rt_now = ev_time ();
1309 mn_now = get_clock (); 1514 mn_now = get_clock ();
1310 now_floor = mn_now; 1515 now_floor = mn_now;
1311 rtmn_diff = ev_rt_now - mn_now; 1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1312 1520
1313 io_blocktime = 0.; 1521 io_blocktime = 0.;
1314 timeout_blocktime = 0.; 1522 timeout_blocktime = 0.;
1315 backend = 0; 1523 backend = 0;
1316 backend_fd = -1; 1524 backend_fd = -1;
1317 gotasync = 0; 1525 gotasync = 0;
1318#if EV_USE_INOTIFY 1526#if EV_USE_INOTIFY
1319 fs_fd = -2; 1527 fs_fd = -2;
1320#endif 1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1321 1532
1322 /* pid check not overridable via env */ 1533 /* pid check not overridable via env */
1323#ifndef _WIN32 1534#ifndef _WIN32
1324 if (flags & EVFLAG_FORKCHECK) 1535 if (flags & EVFLAG_FORKCHECK)
1325 curpid = getpid (); 1536 curpid = getpid ();
… …
1347#endif 1558#endif
1348#if EV_USE_SELECT 1559#if EV_USE_SELECT
1349 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350#endif 1561#endif
1351 1562
1563 ev_prepare_init (&pending_w, pendingcb);
1564
1352 ev_init (&pipeev, pipecb); 1565 ev_init (&pipe_w, pipecb);
1353 ev_set_priority (&pipeev, EV_MAXPRI); 1566 ev_set_priority (&pipe_w, EV_MAXPRI);
1354 } 1567 }
1355} 1568}
1356 1569
1570/* free up a loop structure */
1357static void noinline 1571static void noinline
1358loop_destroy (EV_P) 1572loop_destroy (EV_P)
1359{ 1573{
1360 int i; 1574 int i;
1361 1575
1362 if (ev_is_active (&pipeev)) 1576 if (ev_is_active (&pipe_w))
1363 { 1577 {
1364 ev_ref (EV_A); /* signal watcher */ 1578 /*ev_ref (EV_A);*/
1365 ev_io_stop (EV_A_ &pipeev); 1579 /*ev_io_stop (EV_A_ &pipe_w);*/
1366 1580
1367#if EV_USE_EVENTFD 1581#if EV_USE_EVENTFD
1368 if (evfd >= 0) 1582 if (evfd >= 0)
1369 close (evfd); 1583 close (evfd);
1370#endif 1584#endif
… …
1374 close (evpipe [0]); 1588 close (evpipe [0]);
1375 close (evpipe [1]); 1589 close (evpipe [1]);
1376 } 1590 }
1377 } 1591 }
1378 1592
1593#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd);
1600 }
1601#endif
1602
1379#if EV_USE_INOTIFY 1603#if EV_USE_INOTIFY
1380 if (fs_fd >= 0) 1604 if (fs_fd >= 0)
1381 close (fs_fd); 1605 close (fs_fd);
1382#endif 1606#endif
1383 1607
… …
1409 } 1633 }
1410 1634
1411 ev_free (anfds); anfdmax = 0; 1635 ev_free (anfds); anfdmax = 0;
1412 1636
1413 /* have to use the microsoft-never-gets-it-right macro */ 1637 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY);
1414 array_free (fdchange, EMPTY); 1639 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1640 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1641#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1642 array_free (periodic, EMPTY);
1418#endif 1643#endif
… …
1427 1652
1428 backend = 0; 1653 backend = 0;
1429} 1654}
1430 1655
1431#if EV_USE_INOTIFY 1656#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 1657inline_size void infy_fork (EV_P);
1433#endif 1658#endif
1434 1659
1435void inline_size 1660inline_size void
1436loop_fork (EV_P) 1661loop_fork (EV_P)
1437{ 1662{
1438#if EV_USE_PORT 1663#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1664 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 1665#endif
… …
1446#endif 1671#endif
1447#if EV_USE_INOTIFY 1672#if EV_USE_INOTIFY
1448 infy_fork (EV_A); 1673 infy_fork (EV_A);
1449#endif 1674#endif
1450 1675
1451 if (ev_is_active (&pipeev)) 1676 if (ev_is_active (&pipe_w))
1452 { 1677 {
1453 /* this "locks" the handlers against writing to the pipe */ 1678 /* this "locks" the handlers against writing to the pipe */
1454 /* while we modify the fd vars */ 1679 /* while we modify the fd vars */
1455 gotsig = 1; 1680 gotsig = 1;
1456#if EV_ASYNC_ENABLE 1681#if EV_ASYNC_ENABLE
1457 gotasync = 1; 1682 gotasync = 1;
1458#endif 1683#endif
1459 1684
1460 ev_ref (EV_A); 1685 ev_ref (EV_A);
1461 ev_io_stop (EV_A_ &pipeev); 1686 ev_io_stop (EV_A_ &pipe_w);
1462 1687
1463#if EV_USE_EVENTFD 1688#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1689 if (evfd >= 0)
1465 close (evfd); 1690 close (evfd);
1466#endif 1691#endif
… …
1471 close (evpipe [1]); 1696 close (evpipe [1]);
1472 } 1697 }
1473 1698
1474 evpipe_init (EV_A); 1699 evpipe_init (EV_A);
1475 /* now iterate over everything, in case we missed something */ 1700 /* now iterate over everything, in case we missed something */
1476 pipecb (EV_A_ &pipeev, EV_READ); 1701 pipecb (EV_A_ &pipe_w, EV_READ);
1477 } 1702 }
1478 1703
1479 postfork = 0; 1704 postfork = 0;
1480} 1705}
1481 1706
1482#if EV_MULTIPLICITY 1707#if EV_MULTIPLICITY
1708
1483struct ev_loop * 1709struct ev_loop *
1484ev_loop_new (unsigned int flags) 1710ev_loop_new (unsigned int flags)
1485{ 1711{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1713
1488 memset (loop, 0, sizeof (struct ev_loop)); 1714 memset (loop, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1715 loop_init (EV_A_ flags);
1491 1716
1492 if (ev_backend (EV_A)) 1717 if (ev_backend (EV_A))
1493 return loop; 1718 return loop;
1494 1719
… …
1505void 1730void
1506ev_loop_fork (EV_P) 1731ev_loop_fork (EV_P)
1507{ 1732{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1733 postfork = 1; /* must be in line with ev_default_fork */
1509} 1734}
1735#endif /* multiplicity */
1510 1736
1511#if EV_VERIFY 1737#if EV_VERIFY
1512static void 1738static void noinline
1739verify_watcher (EV_P_ W w)
1740{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742
1743 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745}
1746
1747static void noinline
1748verify_heap (EV_P_ ANHE *heap, int N)
1749{
1750 int i;
1751
1752 for (i = HEAP0; i < N + HEAP0; ++i)
1753 {
1754 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1755 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1756 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1757
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 }
1760}
1761
1762static void noinline
1513array_check (W **ws, int cnt) 1763array_verify (EV_P_ W *ws, int cnt)
1514{ 1764{
1515 while (cnt--) 1765 while (cnt--)
1766 {
1516 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]);
1769 }
1517} 1770}
1771#endif
1518 1772
1519static void 1773#if EV_MINIMAL < 2
1774void
1520ev_loop_verify (EV_P) 1775ev_loop_verify (EV_P)
1521{ 1776{
1777#if EV_VERIFY
1522 int i; 1778 int i;
1779 WL w;
1523 1780
1781 assert (activecnt >= -1);
1782
1783 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786
1787 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i)
1789 for (w = anfds [i].head; w; w = w->next)
1790 {
1791 verify_watcher (EV_A_ (W)w);
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 }
1795
1796 assert (timermax >= timercnt);
1524 checkheap (timers, timercnt); 1797 verify_heap (EV_A_ timers, timercnt);
1798
1525#if EV_PERIODIC_ENABLE 1799#if EV_PERIODIC_ENABLE
1800 assert (periodicmax >= periodiccnt);
1526 checkheap (periodics, periodiccnt); 1801 verify_heap (EV_A_ periodics, periodiccnt);
1527#endif 1802#endif
1528 1803
1804 for (i = NUMPRI; i--; )
1805 {
1806 assert (pendingmax [i] >= pendingcnt [i]);
1529#if EV_IDLE_ENABLE 1807#if EV_IDLE_ENABLE
1530 for (i = NUMPRI; i--; ) 1808 assert (idleall >= 0);
1809 assert (idlemax [i] >= idlecnt [i]);
1531 array_check ((W **)idles [i], idlecnt [i]); 1810 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532#endif 1811#endif
1812 }
1813
1533#if EV_FORK_ENABLE 1814#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt);
1534 array_check ((W **)forks, forkcnt); 1816 array_verify (EV_A_ (W *)forks, forkcnt);
1535#endif 1817#endif
1536 array_check ((W **)prepares, preparecnt); 1818
1537 array_check ((W **)checks, checkcnt);
1538#if EV_ASYNC_ENABLE 1819#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt);
1539 array_check ((W **)asyncs, asynccnt); 1821 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif
1823
1824 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt);
1826
1827 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt);
1829
1830# if 0
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1540#endif 1833# endif
1541}
1542#endif 1834#endif
1543 1835}
1544#endif 1836#endif
1545 1837
1546#if EV_MULTIPLICITY 1838#if EV_MULTIPLICITY
1547struct ev_loop * 1839struct ev_loop *
1548ev_default_loop_init (unsigned int flags) 1840ev_default_loop_init (unsigned int flags)
… …
1582{ 1874{
1583#if EV_MULTIPLICITY 1875#if EV_MULTIPLICITY
1584 struct ev_loop *loop = ev_default_loop_ptr; 1876 struct ev_loop *loop = ev_default_loop_ptr;
1585#endif 1877#endif
1586 1878
1879 ev_default_loop_ptr = 0;
1880
1587#ifndef _WIN32 1881#ifndef _WIN32
1588 ev_ref (EV_A); /* child watcher */ 1882 ev_ref (EV_A); /* child watcher */
1589 ev_signal_stop (EV_A_ &childev); 1883 ev_signal_stop (EV_A_ &childev);
1590#endif 1884#endif
1591 1885
… …
1597{ 1891{
1598#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1599 struct ev_loop *loop = ev_default_loop_ptr; 1893 struct ev_loop *loop = ev_default_loop_ptr;
1600#endif 1894#endif
1601 1895
1602 if (backend)
1603 postfork = 1; /* must be in line with ev_loop_fork */ 1896 postfork = 1; /* must be in line with ev_loop_fork */
1604} 1897}
1605 1898
1606/*****************************************************************************/ 1899/*****************************************************************************/
1607 1900
1608void 1901void
1609ev_invoke (EV_P_ void *w, int revents) 1902ev_invoke (EV_P_ void *w, int revents)
1610{ 1903{
1611 EV_CB_INVOKE ((W)w, revents); 1904 EV_CB_INVOKE ((W)w, revents);
1612} 1905}
1613 1906
1614void inline_speed 1907unsigned int
1615call_pending (EV_P) 1908ev_pending_count (EV_P)
1616{ 1909{
1617 int pri; 1910 int pri;
1911 unsigned int count = 0;
1618 1912
1619 EV_FREQUENT_CHECK; 1913 for (pri = NUMPRI; pri--; )
1914 count += pendingcnt [pri];
1915
1916 return count;
1917}
1918
1919void noinline
1920ev_invoke_pending (EV_P)
1921{
1922 int pri;
1620 1923
1621 for (pri = NUMPRI; pri--; ) 1924 for (pri = NUMPRI; pri--; )
1622 while (pendingcnt [pri]) 1925 while (pendingcnt [pri])
1623 { 1926 {
1624 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625 1928
1626 if (expect_true (p->w))
1627 {
1628 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1629 1931
1630 p->w->pending = 0; 1932 p->w->pending = 0;
1631 EV_CB_INVOKE (p->w, p->events); 1933 EV_CB_INVOKE (p->w, p->events);
1632 } 1934 EV_FREQUENT_CHECK;
1633 } 1935 }
1634
1635 EV_FREQUENT_CHECK;
1636} 1936}
1637 1937
1638#if EV_IDLE_ENABLE 1938#if EV_IDLE_ENABLE
1639void inline_size 1939/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */
1941inline_size void
1640idle_reify (EV_P) 1942idle_reify (EV_P)
1641{ 1943{
1642 if (expect_false (idleall)) 1944 if (expect_false (idleall))
1643 { 1945 {
1644 int pri; 1946 int pri;
… …
1656 } 1958 }
1657 } 1959 }
1658} 1960}
1659#endif 1961#endif
1660 1962
1661void inline_size 1963/* make timers pending */
1964inline_size void
1662timers_reify (EV_P) 1965timers_reify (EV_P)
1663{ 1966{
1664 EV_FREQUENT_CHECK; 1967 EV_FREQUENT_CHECK;
1665 1968
1666 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1969 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667 { 1970 {
1668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1971 do
1669
1670 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672 /* first reschedule or stop timer */
1673 if (w->repeat)
1674 { 1972 {
1973 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1974
1975 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1976
1977 /* first reschedule or stop timer */
1978 if (w->repeat)
1979 {
1675 ev_at (w) += w->repeat; 1980 ev_at (w) += w->repeat;
1676 if (ev_at (w) < mn_now) 1981 if (ev_at (w) < mn_now)
1677 ev_at (w) = mn_now; 1982 ev_at (w) = mn_now;
1678 1983
1679 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1984 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1680 1985
1681 ANHE_at_cache (timers [HEAP0]); 1986 ANHE_at_cache (timers [HEAP0]);
1682 downheap (timers, timercnt, HEAP0); 1987 downheap (timers, timercnt, HEAP0);
1988 }
1989 else
1990 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1991
1992 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w);
1683 } 1994 }
1684 else 1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686 1996
1687 EV_FREQUENT_CHECK;
1688 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1997 feed_reverse_done (EV_A_ EV_TIMEOUT);
1689 } 1998 }
1690} 1999}
1691 2000
1692#if EV_PERIODIC_ENABLE 2001#if EV_PERIODIC_ENABLE
1693void inline_size 2002/* make periodics pending */
2003inline_size void
1694periodics_reify (EV_P) 2004periodics_reify (EV_P)
1695{ 2005{
1696 EV_FREQUENT_CHECK; 2006 EV_FREQUENT_CHECK;
2007
1697 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698 { 2009 {
1699 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2010 int feed_count = 0;
1700 2011
1701 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2012 do
1702
1703 /* first reschedule or stop timer */
1704 if (w->reschedule_cb)
1705 { 2013 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2017
2018 /* first reschedule or stop timer */
2019 if (w->reschedule_cb)
2020 {
1706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2021 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 2022
1708 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2023 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1709 2024
1710 ANHE_at_cache (periodics [HEAP0]); 2025 ANHE_at_cache (periodics [HEAP0]);
1711 downheap (periodics, periodiccnt, HEAP0); 2026 downheap (periodics, periodiccnt, HEAP0);
2027 }
2028 else if (w->interval)
2029 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0);
2046 }
2047 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2049
1712 EV_FREQUENT_CHECK; 2050 EV_FREQUENT_CHECK;
2051 feed_reverse (EV_A_ (W)w);
1713 } 2052 }
1714 else if (w->interval) 2053 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715 {
1716 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717 /* if next trigger time is not sufficiently in the future, put it there */
1718 /* this might happen because of floating point inexactness */
1719 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720 {
1721 ev_at (w) += w->interval;
1722 2054
1723 /* if interval is unreasonably low we might still have a time in the past */
1724 /* so correct this. this will make the periodic very inexact, but the user */
1725 /* has effectively asked to get triggered more often than possible */
1726 if (ev_at (w) < ev_rt_now)
1727 ev_at (w) = ev_rt_now;
1728 }
1729
1730 ANHE_at_cache (periodics [HEAP0]);
1731 downheap (periodics, periodiccnt, HEAP0);
1732 }
1733 else
1734 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736 EV_FREQUENT_CHECK;
1737 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2055 feed_reverse_done (EV_A_ EV_PERIODIC);
1738 } 2056 }
1739} 2057}
1740 2058
2059/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741static void noinline 2061static void noinline
1742periodics_reschedule (EV_P) 2062periodics_reschedule (EV_P)
1743{ 2063{
1744 int i; 2064 int i;
1745 2065
… …
1758 2078
1759 reheap (periodics, periodiccnt); 2079 reheap (periodics, periodiccnt);
1760} 2080}
1761#endif 2081#endif
1762 2082
1763void inline_speed 2083/* adjust all timers by a given offset */
2084static void noinline
2085timers_reschedule (EV_P_ ev_tstamp adjust)
2086{
2087 int i;
2088
2089 for (i = 0; i < timercnt; ++i)
2090 {
2091 ANHE *he = timers + i + HEAP0;
2092 ANHE_w (*he)->at += adjust;
2093 ANHE_at_cache (*he);
2094 }
2095}
2096
2097/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */
2099inline_speed void
1764time_update (EV_P_ ev_tstamp max_block) 2100time_update (EV_P_ ev_tstamp max_block)
1765{ 2101{
1766 int i;
1767
1768#if EV_USE_MONOTONIC 2102#if EV_USE_MONOTONIC
1769 if (expect_true (have_monotonic)) 2103 if (expect_true (have_monotonic))
1770 { 2104 {
2105 int i;
1771 ev_tstamp odiff = rtmn_diff; 2106 ev_tstamp odiff = rtmn_diff;
1772 2107
1773 mn_now = get_clock (); 2108 mn_now = get_clock ();
1774 2109
1775 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2110 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1801 ev_rt_now = ev_time (); 2136 ev_rt_now = ev_time ();
1802 mn_now = get_clock (); 2137 mn_now = get_clock ();
1803 now_floor = mn_now; 2138 now_floor = mn_now;
1804 } 2139 }
1805 2140
2141 /* no timer adjustment, as the monotonic clock doesn't jump */
2142 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806# if EV_PERIODIC_ENABLE 2143# if EV_PERIODIC_ENABLE
1807 periodics_reschedule (EV_A); 2144 periodics_reschedule (EV_A);
1808# endif 2145# endif
1809 /* no timer adjustment, as the monotonic clock doesn't jump */
1810 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811 } 2146 }
1812 else 2147 else
1813#endif 2148#endif
1814 { 2149 {
1815 ev_rt_now = ev_time (); 2150 ev_rt_now = ev_time ();
1816 2151
1817 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2152 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1818 { 2153 {
2154 /* adjust timers. this is easy, as the offset is the same for all of them */
2155 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1819#if EV_PERIODIC_ENABLE 2156#if EV_PERIODIC_ENABLE
1820 periodics_reschedule (EV_A); 2157 periodics_reschedule (EV_A);
1821#endif 2158#endif
1822 /* adjust timers. this is easy, as the offset is the same for all of them */
1823 for (i = 0; i < timercnt; ++i)
1824 {
1825 ANHE *he = timers + i + HEAP0;
1826 ANHE_w (*he)->at += ev_rt_now - mn_now;
1827 ANHE_at_cache (*he);
1828 }
1829 } 2159 }
1830 2160
1831 mn_now = ev_rt_now; 2161 mn_now = ev_rt_now;
1832 } 2162 }
1833} 2163}
1834 2164
1835void 2165void
1836ev_ref (EV_P)
1837{
1838 ++activecnt;
1839}
1840
1841void
1842ev_unref (EV_P)
1843{
1844 --activecnt;
1845}
1846
1847static int loop_done;
1848
1849void
1850ev_loop (EV_P_ int flags) 2166ev_loop (EV_P_ int flags)
1851{ 2167{
2168#if EV_MINIMAL < 2
2169 ++loop_depth;
2170#endif
2171
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2173
1852 loop_done = EVUNLOOP_CANCEL; 2174 loop_done = EVUNLOOP_CANCEL;
1853 2175
1854 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1855 2177
1856 do 2178 do
1857 { 2179 {
2180#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A);
2182#endif
2183
1858#ifndef _WIN32 2184#ifndef _WIN32
1859 if (expect_false (curpid)) /* penalise the forking check even more */ 2185 if (expect_false (curpid)) /* penalise the forking check even more */
1860 if (expect_false (getpid () != curpid)) 2186 if (expect_false (getpid () != curpid))
1861 { 2187 {
1862 curpid = getpid (); 2188 curpid = getpid ();
… …
1868 /* we might have forked, so queue fork handlers */ 2194 /* we might have forked, so queue fork handlers */
1869 if (expect_false (postfork)) 2195 if (expect_false (postfork))
1870 if (forkcnt) 2196 if (forkcnt)
1871 { 2197 {
1872 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1873 call_pending (EV_A); 2199 EV_INVOKE_PENDING;
1874 } 2200 }
1875#endif 2201#endif
1876 2202
1877 /* queue prepare watchers (and execute them) */ 2203 /* queue prepare watchers (and execute them) */
1878 if (expect_false (preparecnt)) 2204 if (expect_false (preparecnt))
1879 { 2205 {
1880 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881 call_pending (EV_A); 2207 EV_INVOKE_PENDING;
1882 } 2208 }
1883 2209
1884 if (expect_false (!activecnt)) 2210 if (expect_false (loop_done))
1885 break; 2211 break;
1886 2212
1887 /* we might have forked, so reify kernel state if necessary */ 2213 /* we might have forked, so reify kernel state if necessary */
1888 if (expect_false (postfork)) 2214 if (expect_false (postfork))
1889 loop_fork (EV_A); 2215 loop_fork (EV_A);
… …
1896 ev_tstamp waittime = 0.; 2222 ev_tstamp waittime = 0.;
1897 ev_tstamp sleeptime = 0.; 2223 ev_tstamp sleeptime = 0.;
1898 2224
1899 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1900 { 2226 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
1901 /* update time to cancel out callback processing overhead */ 2230 /* update time to cancel out callback processing overhead */
1902 time_update (EV_A_ 1e100); 2231 time_update (EV_A_ 1e100);
1903 2232
1904 waittime = MAX_BLOCKTIME; 2233 waittime = MAX_BLOCKTIME;
1905 2234
… …
1915 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1916 if (waittime > to) waittime = to; 2245 if (waittime > to) waittime = to;
1917 } 2246 }
1918#endif 2247#endif
1919 2248
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */
1920 if (expect_false (waittime < timeout_blocktime)) 2250 if (expect_false (waittime < timeout_blocktime))
1921 waittime = timeout_blocktime; 2251 waittime = timeout_blocktime;
1922 2252
1923 sleeptime = waittime - backend_fudge; 2253 /* extra check because io_blocktime is commonly 0 */
1924
1925 if (expect_true (sleeptime > io_blocktime)) 2254 if (expect_false (io_blocktime))
1926 sleeptime = io_blocktime;
1927
1928 if (sleeptime)
1929 { 2255 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257
2258 if (sleeptime > waittime - backend_fudge)
2259 sleeptime = waittime - backend_fudge;
2260
2261 if (expect_true (sleeptime > 0.))
2262 {
1930 ev_sleep (sleeptime); 2263 ev_sleep (sleeptime);
1931 waittime -= sleeptime; 2264 waittime -= sleeptime;
2265 }
1932 } 2266 }
1933 } 2267 }
1934 2268
2269#if EV_MINIMAL < 2
1935 ++loop_count; 2270 ++loop_count;
2271#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1936 backend_poll (EV_A_ waittime); 2273 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1937 2275
1938 /* update ev_rt_now, do magic */ 2276 /* update ev_rt_now, do magic */
1939 time_update (EV_A_ waittime + sleeptime); 2277 time_update (EV_A_ waittime + sleeptime);
1940 } 2278 }
1941 2279
… …
1952 2290
1953 /* queue check watchers, to be executed first */ 2291 /* queue check watchers, to be executed first */
1954 if (expect_false (checkcnt)) 2292 if (expect_false (checkcnt))
1955 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1956 2294
1957 call_pending (EV_A); 2295 EV_INVOKE_PENDING;
1958 } 2296 }
1959 while (expect_true ( 2297 while (expect_true (
1960 activecnt 2298 activecnt
1961 && !loop_done 2299 && !loop_done
1962 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1963 )); 2301 ));
1964 2302
1965 if (loop_done == EVUNLOOP_ONE) 2303 if (loop_done == EVUNLOOP_ONE)
1966 loop_done = EVUNLOOP_CANCEL; 2304 loop_done = EVUNLOOP_CANCEL;
2305
2306#if EV_MINIMAL < 2
2307 --loop_depth;
2308#endif
1967} 2309}
1968 2310
1969void 2311void
1970ev_unloop (EV_P_ int how) 2312ev_unloop (EV_P_ int how)
1971{ 2313{
1972 loop_done = how; 2314 loop_done = how;
1973} 2315}
1974 2316
2317void
2318ev_ref (EV_P)
2319{
2320 ++activecnt;
2321}
2322
2323void
2324ev_unref (EV_P)
2325{
2326 --activecnt;
2327}
2328
2329void
2330ev_now_update (EV_P)
2331{
2332 time_update (EV_A_ 1e100);
2333}
2334
2335void
2336ev_suspend (EV_P)
2337{
2338 ev_now_update (EV_A);
2339}
2340
2341void
2342ev_resume (EV_P)
2343{
2344 ev_tstamp mn_prev = mn_now;
2345
2346 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev);
2348#if EV_PERIODIC_ENABLE
2349 /* TODO: really do this? */
2350 periodics_reschedule (EV_A);
2351#endif
2352}
2353
1975/*****************************************************************************/ 2354/*****************************************************************************/
2355/* singly-linked list management, used when the expected list length is short */
1976 2356
1977void inline_size 2357inline_size void
1978wlist_add (WL *head, WL elem) 2358wlist_add (WL *head, WL elem)
1979{ 2359{
1980 elem->next = *head; 2360 elem->next = *head;
1981 *head = elem; 2361 *head = elem;
1982} 2362}
1983 2363
1984void inline_size 2364inline_size void
1985wlist_del (WL *head, WL elem) 2365wlist_del (WL *head, WL elem)
1986{ 2366{
1987 while (*head) 2367 while (*head)
1988 { 2368 {
1989 if (*head == elem) 2369 if (*head == elem)
… …
1994 2374
1995 head = &(*head)->next; 2375 head = &(*head)->next;
1996 } 2376 }
1997} 2377}
1998 2378
1999void inline_speed 2379/* internal, faster, version of ev_clear_pending */
2380inline_speed void
2000clear_pending (EV_P_ W w) 2381clear_pending (EV_P_ W w)
2001{ 2382{
2002 if (w->pending) 2383 if (w->pending)
2003 { 2384 {
2004 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2385 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005 w->pending = 0; 2386 w->pending = 0;
2006 } 2387 }
2007} 2388}
2008 2389
2009int 2390int
… …
2013 int pending = w_->pending; 2394 int pending = w_->pending;
2014 2395
2015 if (expect_true (pending)) 2396 if (expect_true (pending))
2016 { 2397 {
2017 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2398 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2399 p->w = (W)&pending_w;
2018 w_->pending = 0; 2400 w_->pending = 0;
2019 p->w = 0;
2020 return p->events; 2401 return p->events;
2021 } 2402 }
2022 else 2403 else
2023 return 0; 2404 return 0;
2024} 2405}
2025 2406
2026void inline_size 2407inline_size void
2027pri_adjust (EV_P_ W w) 2408pri_adjust (EV_P_ W w)
2028{ 2409{
2029 int pri = w->priority; 2410 int pri = ev_priority (w);
2030 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2411 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2412 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032 w->priority = pri; 2413 ev_set_priority (w, pri);
2033} 2414}
2034 2415
2035void inline_speed 2416inline_speed void
2036ev_start (EV_P_ W w, int active) 2417ev_start (EV_P_ W w, int active)
2037{ 2418{
2038 pri_adjust (EV_A_ w); 2419 pri_adjust (EV_A_ w);
2039 w->active = active; 2420 w->active = active;
2040 ev_ref (EV_A); 2421 ev_ref (EV_A);
2041} 2422}
2042 2423
2043void inline_size 2424inline_size void
2044ev_stop (EV_P_ W w) 2425ev_stop (EV_P_ W w)
2045{ 2426{
2046 ev_unref (EV_A); 2427 ev_unref (EV_A);
2047 w->active = 0; 2428 w->active = 0;
2048} 2429}
… …
2055 int fd = w->fd; 2436 int fd = w->fd;
2056 2437
2057 if (expect_false (ev_is_active (w))) 2438 if (expect_false (ev_is_active (w)))
2058 return; 2439 return;
2059 2440
2060 assert (("ev_io_start called with negative fd", fd >= 0)); 2441 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2061 2443
2062 EV_FREQUENT_CHECK; 2444 EV_FREQUENT_CHECK;
2063 2445
2064 ev_start (EV_A_ (W)w, 1); 2446 ev_start (EV_A_ (W)w, 1);
2065 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066 wlist_add (&anfds[fd].head, (WL)w); 2448 wlist_add (&anfds[fd].head, (WL)w);
2067 2449
2068 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2069 w->events &= ~EV_IOFDSET; 2451 w->events &= ~EV__IOFDSET;
2070 2452
2071 EV_FREQUENT_CHECK; 2453 EV_FREQUENT_CHECK;
2072} 2454}
2073 2455
2074void noinline 2456void noinline
… …
2076{ 2458{
2077 clear_pending (EV_A_ (W)w); 2459 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2460 if (expect_false (!ev_is_active (w)))
2079 return; 2461 return;
2080 2462
2081 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2463 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2082 2464
2083 EV_FREQUENT_CHECK; 2465 EV_FREQUENT_CHECK;
2084 2466
2085 wlist_del (&anfds[w->fd].head, (WL)w); 2467 wlist_del (&anfds[w->fd].head, (WL)w);
2086 ev_stop (EV_A_ (W)w); 2468 ev_stop (EV_A_ (W)w);
… …
2096 if (expect_false (ev_is_active (w))) 2478 if (expect_false (ev_is_active (w)))
2097 return; 2479 return;
2098 2480
2099 ev_at (w) += mn_now; 2481 ev_at (w) += mn_now;
2100 2482
2101 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2483 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2102 2484
2103 EV_FREQUENT_CHECK; 2485 EV_FREQUENT_CHECK;
2104 2486
2105 ++timercnt; 2487 ++timercnt;
2106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2488 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2109 ANHE_at_cache (timers [ev_active (w)]); 2491 ANHE_at_cache (timers [ev_active (w)]);
2110 upheap (timers, ev_active (w)); 2492 upheap (timers, ev_active (w));
2111 2493
2112 EV_FREQUENT_CHECK; 2494 EV_FREQUENT_CHECK;
2113 2495
2114 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115} 2497}
2116 2498
2117void noinline 2499void noinline
2118ev_timer_stop (EV_P_ ev_timer *w) 2500ev_timer_stop (EV_P_ ev_timer *w)
2119{ 2501{
… …
2124 EV_FREQUENT_CHECK; 2506 EV_FREQUENT_CHECK;
2125 2507
2126 { 2508 {
2127 int active = ev_active (w); 2509 int active = ev_active (w);
2128 2510
2129 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2511 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130 2512
2131 --timercnt; 2513 --timercnt;
2132 2514
2133 if (expect_true (active < timercnt + HEAP0)) 2515 if (expect_true (active < timercnt + HEAP0))
2134 { 2516 {
… …
2167 } 2549 }
2168 2550
2169 EV_FREQUENT_CHECK; 2551 EV_FREQUENT_CHECK;
2170} 2552}
2171 2553
2554ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w)
2556{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558}
2559
2172#if EV_PERIODIC_ENABLE 2560#if EV_PERIODIC_ENABLE
2173void noinline 2561void noinline
2174ev_periodic_start (EV_P_ ev_periodic *w) 2562ev_periodic_start (EV_P_ ev_periodic *w)
2175{ 2563{
2176 if (expect_false (ev_is_active (w))) 2564 if (expect_false (ev_is_active (w)))
… …
2178 2566
2179 if (w->reschedule_cb) 2567 if (w->reschedule_cb)
2180 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181 else if (w->interval) 2569 else if (w->interval)
2182 { 2570 {
2183 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2184 /* this formula differs from the one in periodic_reify because we do not always round up */ 2572 /* this formula differs from the one in periodic_reify because we do not always round up */
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 } 2574 }
2187 else 2575 else
2188 ev_at (w) = w->offset; 2576 ev_at (w) = w->offset;
… …
2196 ANHE_at_cache (periodics [ev_active (w)]); 2584 ANHE_at_cache (periodics [ev_active (w)]);
2197 upheap (periodics, ev_active (w)); 2585 upheap (periodics, ev_active (w));
2198 2586
2199 EV_FREQUENT_CHECK; 2587 EV_FREQUENT_CHECK;
2200 2588
2201 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2202} 2590}
2203 2591
2204void noinline 2592void noinline
2205ev_periodic_stop (EV_P_ ev_periodic *w) 2593ev_periodic_stop (EV_P_ ev_periodic *w)
2206{ 2594{
… …
2211 EV_FREQUENT_CHECK; 2599 EV_FREQUENT_CHECK;
2212 2600
2213 { 2601 {
2214 int active = ev_active (w); 2602 int active = ev_active (w);
2215 2603
2216 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2604 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217 2605
2218 --periodiccnt; 2606 --periodiccnt;
2219 2607
2220 if (expect_true (active < periodiccnt + HEAP0)) 2608 if (expect_true (active < periodiccnt + HEAP0))
2221 { 2609 {
… …
2244 2632
2245void noinline 2633void noinline
2246ev_signal_start (EV_P_ ev_signal *w) 2634ev_signal_start (EV_P_ ev_signal *w)
2247{ 2635{
2248#if EV_MULTIPLICITY 2636#if EV_MULTIPLICITY
2249 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2250#endif 2638#endif
2251 if (expect_false (ev_is_active (w))) 2639 if (expect_false (ev_is_active (w)))
2252 return; 2640 return;
2253 2641
2254 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2255 2643
2644 EV_FREQUENT_CHECK;
2645
2646#if EV_USE_SIGNALFD
2647 if (sigfd == -2)
2648 {
2649 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2650 if (sigfd < 0 && errno == EINVAL)
2651 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2652
2653 if (sigfd >= 0)
2654 {
2655 fd_intern (sigfd); /* doing it twice will not hurt */
2656
2657 sigemptyset (&sigfd_set);
2658
2659 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2660 ev_set_priority (&sigfd_w, EV_MAXPRI);
2661 ev_io_start (EV_A_ &sigfd_w);
2662 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2663 }
2664 }
2665
2666 if (sigfd >= 0)
2667 {
2668 /* TODO: check .head */
2669 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671
2672 signalfd (sigfd, &sigfd_set, 0);
2673 }
2674 else
2675#endif
2256 evpipe_init (EV_A); 2676 evpipe_init (EV_A);
2257
2258 EV_FREQUENT_CHECK;
2259 2677
2260 { 2678 {
2261#ifndef _WIN32 2679#ifndef _WIN32
2262 sigset_t full, prev; 2680 sigset_t full, prev;
2263 sigfillset (&full); 2681 sigfillset (&full);
2264 sigprocmask (SIG_SETMASK, &full, &prev); 2682 sigprocmask (SIG_SETMASK, &full, &prev);
2265#endif 2683#endif
2266 2684
2267 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268 2686
2269#ifndef _WIN32 2687#ifndef _WIN32
2688# if EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif
2691 sigdelset (&prev, w->signum);
2270 sigprocmask (SIG_SETMASK, &prev, 0); 2692 sigprocmask (SIG_SETMASK, &prev, 0);
2271#endif 2693#endif
2272 } 2694 }
2273 2695
2274 ev_start (EV_A_ (W)w, 1); 2696 ev_start (EV_A_ (W)w, 1);
… …
2277 if (!((WL)w)->next) 2699 if (!((WL)w)->next)
2278 { 2700 {
2279#if _WIN32 2701#if _WIN32
2280 signal (w->signum, ev_sighandler); 2702 signal (w->signum, ev_sighandler);
2281#else 2703#else
2704# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/
2706# endif
2707 {
2282 struct sigaction sa; 2708 struct sigaction sa = { };
2283 sa.sa_handler = ev_sighandler; 2709 sa.sa_handler = ev_sighandler;
2284 sigfillset (&sa.sa_mask); 2710 sigfillset (&sa.sa_mask);
2285 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2286 sigaction (w->signum, &sa, 0); 2712 sigaction (w->signum, &sa, 0);
2713 }
2287#endif 2714#endif
2288 } 2715 }
2289 2716
2290 EV_FREQUENT_CHECK; 2717 EV_FREQUENT_CHECK;
2291} 2718}
… …
2301 2728
2302 wlist_del (&signals [w->signum - 1].head, (WL)w); 2729 wlist_del (&signals [w->signum - 1].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 2730 ev_stop (EV_A_ (W)w);
2304 2731
2305 if (!signals [w->signum - 1].head) 2732 if (!signals [w->signum - 1].head)
2733#if EV_USE_SIGNALFD
2734 if (sigfd >= 0)
2735 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2737 sigdelset (&sigfd_set, w->signum);
2738 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2740 /*TODO: maybe unblock signal? */
2741 }
2742 else
2743#endif
2306 signal (w->signum, SIG_DFL); 2744 signal (w->signum, SIG_DFL);
2307 2745
2308 EV_FREQUENT_CHECK; 2746 EV_FREQUENT_CHECK;
2309} 2747}
2310 2748
2311void 2749void
2312ev_child_start (EV_P_ ev_child *w) 2750ev_child_start (EV_P_ ev_child *w)
2313{ 2751{
2314#if EV_MULTIPLICITY 2752#if EV_MULTIPLICITY
2315 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2753 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif 2754#endif
2317 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
2318 return; 2756 return;
2319 2757
2320 EV_FREQUENT_CHECK; 2758 EV_FREQUENT_CHECK;
… …
2345# ifdef _WIN32 2783# ifdef _WIN32
2346# undef lstat 2784# undef lstat
2347# define lstat(a,b) _stati64 (a,b) 2785# define lstat(a,b) _stati64 (a,b)
2348# endif 2786# endif
2349 2787
2350#define DEF_STAT_INTERVAL 5.0074891 2788#define DEF_STAT_INTERVAL 5.0074891
2789#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2351#define MIN_STAT_INTERVAL 0.1074891 2790#define MIN_STAT_INTERVAL 0.1074891
2352 2791
2353static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2354 2793
2355#if EV_USE_INOTIFY 2794#if EV_USE_INOTIFY
2356# define EV_INOTIFY_BUFSIZE 8192 2795# define EV_INOTIFY_BUFSIZE 8192
… …
2360{ 2799{
2361 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2800 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2362 2801
2363 if (w->wd < 0) 2802 if (w->wd < 0)
2364 { 2803 {
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2366 2806
2367 /* monitor some parent directory for speedup hints */ 2807 /* monitor some parent directory for speedup hints */
2368 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2369 /* but an efficiency issue only */ 2809 /* but an efficiency issue only */
2370 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371 { 2811 {
2372 char path [4096]; 2812 char path [4096];
2373 strcpy (path, w->path); 2813 strcpy (path, w->path);
… …
2377 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2817 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2818 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379 2819
2380 char *pend = strrchr (path, '/'); 2820 char *pend = strrchr (path, '/');
2381 2821
2382 if (!pend) 2822 if (!pend || pend == path)
2383 break; /* whoops, no '/', complain to your admin */ 2823 break;
2384 2824
2385 *pend = 0; 2825 *pend = 0;
2386 w->wd = inotify_add_watch (fs_fd, path, mask); 2826 w->wd = inotify_add_watch (fs_fd, path, mask);
2387 } 2827 }
2388 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389 } 2829 }
2390 } 2830 }
2391 else
2392 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393 2831
2394 if (w->wd >= 0) 2832 if (w->wd >= 0)
2833 {
2395 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2835
2836 /* now local changes will be tracked by inotify, but remote changes won't */
2837 /* unless the filesystem it known to be local, we therefore still poll */
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer);
2852 }
2396} 2853}
2397 2854
2398static void noinline 2855static void noinline
2399infy_del (EV_P_ ev_stat *w) 2856infy_del (EV_P_ ev_stat *w)
2400{ 2857{
… …
2414 2871
2415static void noinline 2872static void noinline
2416infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417{ 2874{
2418 if (slot < 0) 2875 if (slot < 0)
2419 /* overflow, need to check for all hahs slots */ 2876 /* overflow, need to check for all hash slots */
2420 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421 infy_wd (EV_A_ slot, wd, ev); 2878 infy_wd (EV_A_ slot, wd, ev);
2422 else 2879 else
2423 { 2880 {
2424 WL w_; 2881 WL w_;
… …
2430 2887
2431 if (w->wd == wd || wd == -1) 2888 if (w->wd == wd || wd == -1)
2432 { 2889 {
2433 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434 { 2891 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435 w->wd = -1; 2893 w->wd = -1;
2436 infy_add (EV_A_ w); /* re-add, no matter what */ 2894 infy_add (EV_A_ w); /* re-add, no matter what */
2437 } 2895 }
2438 2896
2439 stat_timer_cb (EV_A_ &w->timer, 0); 2897 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2452 2910
2453 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2454 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2912 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455} 2913}
2456 2914
2457void inline_size 2915inline_size void
2916check_2625 (EV_P)
2917{
2918 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */
2921 struct utsname buf;
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return;
2926
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1;
2936}
2937
2938inline_size void
2458infy_init (EV_P) 2939infy_init (EV_P)
2459{ 2940{
2460 if (fs_fd != -2) 2941 if (fs_fd != -2)
2461 return; 2942 return;
2943
2944 fs_fd = -1;
2945
2946 check_2625 (EV_A);
2462 2947
2463 fs_fd = inotify_init (); 2948 fs_fd = inotify_init ();
2464 2949
2465 if (fs_fd >= 0) 2950 if (fs_fd >= 0)
2466 { 2951 {
… …
2468 ev_set_priority (&fs_w, EV_MAXPRI); 2953 ev_set_priority (&fs_w, EV_MAXPRI);
2469 ev_io_start (EV_A_ &fs_w); 2954 ev_io_start (EV_A_ &fs_w);
2470 } 2955 }
2471} 2956}
2472 2957
2473void inline_size 2958inline_size void
2474infy_fork (EV_P) 2959infy_fork (EV_P)
2475{ 2960{
2476 int slot; 2961 int slot;
2477 2962
2478 if (fs_fd < 0) 2963 if (fs_fd < 0)
… …
2494 w->wd = -1; 2979 w->wd = -1;
2495 2980
2496 if (fs_fd >= 0) 2981 if (fs_fd >= 0)
2497 infy_add (EV_A_ w); /* re-add, no matter what */ 2982 infy_add (EV_A_ w); /* re-add, no matter what */
2498 else 2983 else
2499 ev_timer_start (EV_A_ &w->timer); 2984 ev_timer_again (EV_A_ &w->timer);
2500 } 2985 }
2501
2502 } 2986 }
2503} 2987}
2504 2988
2989#endif
2990
2991#ifdef _WIN32
2992# define EV_LSTAT(p,b) _stati64 (p, b)
2993#else
2994# define EV_LSTAT(p,b) lstat (p, b)
2505#endif 2995#endif
2506 2996
2507void 2997void
2508ev_stat_stat (EV_P_ ev_stat *w) 2998ev_stat_stat (EV_P_ ev_stat *w)
2509{ 2999{
… …
2536 || w->prev.st_atime != w->attr.st_atime 3026 || w->prev.st_atime != w->attr.st_atime
2537 || w->prev.st_mtime != w->attr.st_mtime 3027 || w->prev.st_mtime != w->attr.st_mtime
2538 || w->prev.st_ctime != w->attr.st_ctime 3028 || w->prev.st_ctime != w->attr.st_ctime
2539 ) { 3029 ) {
2540 #if EV_USE_INOTIFY 3030 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0)
3032 {
2541 infy_del (EV_A_ w); 3033 infy_del (EV_A_ w);
2542 infy_add (EV_A_ w); 3034 infy_add (EV_A_ w);
2543 ev_stat_stat (EV_A_ w); /* avoid race... */ 3035 ev_stat_stat (EV_A_ w); /* avoid race... */
3036 }
2544 #endif 3037 #endif
2545 3038
2546 ev_feed_event (EV_A_ w, EV_STAT); 3039 ev_feed_event (EV_A_ w, EV_STAT);
2547 } 3040 }
2548} 3041}
… …
2551ev_stat_start (EV_P_ ev_stat *w) 3044ev_stat_start (EV_P_ ev_stat *w)
2552{ 3045{
2553 if (expect_false (ev_is_active (w))) 3046 if (expect_false (ev_is_active (w)))
2554 return; 3047 return;
2555 3048
2556 /* since we use memcmp, we need to clear any padding data etc. */
2557 memset (&w->prev, 0, sizeof (ev_statdata));
2558 memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560 ev_stat_stat (EV_A_ w); 3049 ev_stat_stat (EV_A_ w);
2561 3050
3051 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562 if (w->interval < MIN_STAT_INTERVAL) 3052 w->interval = MIN_STAT_INTERVAL;
2563 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564 3053
2565 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3054 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2566 ev_set_priority (&w->timer, ev_priority (w)); 3055 ev_set_priority (&w->timer, ev_priority (w));
2567 3056
2568#if EV_USE_INOTIFY 3057#if EV_USE_INOTIFY
2569 infy_init (EV_A); 3058 infy_init (EV_A);
2570 3059
2571 if (fs_fd >= 0) 3060 if (fs_fd >= 0)
2572 infy_add (EV_A_ w); 3061 infy_add (EV_A_ w);
2573 else 3062 else
2574#endif 3063#endif
2575 ev_timer_start (EV_A_ &w->timer); 3064 ev_timer_again (EV_A_ &w->timer);
2576 3065
2577 ev_start (EV_A_ (W)w, 1); 3066 ev_start (EV_A_ (W)w, 1);
2578 3067
2579 EV_FREQUENT_CHECK; 3068 EV_FREQUENT_CHECK;
2580} 3069}
… …
2750 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3239 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751 } 3240 }
2752 } 3241 }
2753} 3242}
2754 3243
3244static void
3245embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3246{
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248
3249 ev_embed_stop (EV_A_ w);
3250
3251 {
3252 struct ev_loop *loop = w->other;
3253
3254 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3256 }
3257
3258 ev_embed_start (EV_A_ w);
3259}
3260
2755#if 0 3261#if 0
2756static void 3262static void
2757embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3263embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758{ 3264{
2759 ev_idle_stop (EV_A_ idle); 3265 ev_idle_stop (EV_A_ idle);
… …
2766 if (expect_false (ev_is_active (w))) 3272 if (expect_false (ev_is_active (w)))
2767 return; 3273 return;
2768 3274
2769 { 3275 {
2770 struct ev_loop *loop = w->other; 3276 struct ev_loop *loop = w->other;
2771 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2772 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2773 } 3279 }
2774 3280
2775 EV_FREQUENT_CHECK; 3281 EV_FREQUENT_CHECK;
2776 3282
… …
2779 3285
2780 ev_prepare_init (&w->prepare, embed_prepare_cb); 3286 ev_prepare_init (&w->prepare, embed_prepare_cb);
2781 ev_set_priority (&w->prepare, EV_MINPRI); 3287 ev_set_priority (&w->prepare, EV_MINPRI);
2782 ev_prepare_start (EV_A_ &w->prepare); 3288 ev_prepare_start (EV_A_ &w->prepare);
2783 3289
3290 ev_fork_init (&w->fork, embed_fork_cb);
3291 ev_fork_start (EV_A_ &w->fork);
3292
2784 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3293 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785 3294
2786 ev_start (EV_A_ (W)w, 1); 3295 ev_start (EV_A_ (W)w, 1);
2787 3296
2788 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
… …
2795 if (expect_false (!ev_is_active (w))) 3304 if (expect_false (!ev_is_active (w)))
2796 return; 3305 return;
2797 3306
2798 EV_FREQUENT_CHECK; 3307 EV_FREQUENT_CHECK;
2799 3308
2800 ev_io_stop (EV_A_ &w->io); 3309 ev_io_stop (EV_A_ &w->io);
2801 ev_prepare_stop (EV_A_ &w->prepare); 3310 ev_prepare_stop (EV_A_ &w->prepare);
2802 3311 ev_fork_stop (EV_A_ &w->fork);
2803 ev_stop (EV_A_ (W)w);
2804 3312
2805 EV_FREQUENT_CHECK; 3313 EV_FREQUENT_CHECK;
2806} 3314}
2807#endif 3315#endif
2808 3316
… …
2905once_cb (EV_P_ struct ev_once *once, int revents) 3413once_cb (EV_P_ struct ev_once *once, int revents)
2906{ 3414{
2907 void (*cb)(int revents, void *arg) = once->cb; 3415 void (*cb)(int revents, void *arg) = once->cb;
2908 void *arg = once->arg; 3416 void *arg = once->arg;
2909 3417
2910 ev_io_stop (EV_A_ &once->io); 3418 ev_io_stop (EV_A_ &once->io);
2911 ev_timer_stop (EV_A_ &once->to); 3419 ev_timer_stop (EV_A_ &once->to);
2912 ev_free (once); 3420 ev_free (once);
2913 3421
2914 cb (revents, arg); 3422 cb (revents, arg);
2915} 3423}
2916 3424
2917static void 3425static void
2918once_cb_io (EV_P_ ev_io *w, int revents) 3426once_cb_io (EV_P_ ev_io *w, int revents)
2919{ 3427{
2920 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3428 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3429
3430 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2921} 3431}
2922 3432
2923static void 3433static void
2924once_cb_to (EV_P_ ev_timer *w, int revents) 3434once_cb_to (EV_P_ ev_timer *w, int revents)
2925{ 3435{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3436 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3437
3438 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2927} 3439}
2928 3440
2929void 3441void
2930ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3442ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2931{ 3443{
… …
2953 ev_timer_set (&once->to, timeout, 0.); 3465 ev_timer_set (&once->to, timeout, 0.);
2954 ev_timer_start (EV_A_ &once->to); 3466 ev_timer_start (EV_A_ &once->to);
2955 } 3467 }
2956} 3468}
2957 3469
3470/*****************************************************************************/
3471
3472#if EV_WALK_ENABLE
3473void
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3475{
3476 int i, j;
3477 ev_watcher_list *wl, *wn;
3478
3479 if (types & (EV_IO | EV_EMBED))
3480 for (i = 0; i < anfdmax; ++i)
3481 for (wl = anfds [i].head; wl; )
3482 {
3483 wn = wl->next;
3484
3485#if EV_EMBED_ENABLE
3486 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3487 {
3488 if (types & EV_EMBED)
3489 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3490 }
3491 else
3492#endif
3493#if EV_USE_INOTIFY
3494 if (ev_cb ((ev_io *)wl) == infy_cb)
3495 ;
3496 else
3497#endif
3498 if ((ev_io *)wl != &pipe_w)
3499 if (types & EV_IO)
3500 cb (EV_A_ EV_IO, wl);
3501
3502 wl = wn;
3503 }
3504
3505 if (types & (EV_TIMER | EV_STAT))
3506 for (i = timercnt + HEAP0; i-- > HEAP0; )
3507#if EV_STAT_ENABLE
3508 /*TODO: timer is not always active*/
3509 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3510 {
3511 if (types & EV_STAT)
3512 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3513 }
3514 else
3515#endif
3516 if (types & EV_TIMER)
3517 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3518
3519#if EV_PERIODIC_ENABLE
3520 if (types & EV_PERIODIC)
3521 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3522 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3523#endif
3524
3525#if EV_IDLE_ENABLE
3526 if (types & EV_IDLE)
3527 for (j = NUMPRI; i--; )
3528 for (i = idlecnt [j]; i--; )
3529 cb (EV_A_ EV_IDLE, idles [j][i]);
3530#endif
3531
3532#if EV_FORK_ENABLE
3533 if (types & EV_FORK)
3534 for (i = forkcnt; i--; )
3535 if (ev_cb (forks [i]) != embed_fork_cb)
3536 cb (EV_A_ EV_FORK, forks [i]);
3537#endif
3538
3539#if EV_ASYNC_ENABLE
3540 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif
3544
3545 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]);
3551
3552 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]);
3555
3556 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i)
3558 for (wl = signals [i].head; wl; )
3559 {
3560 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn;
3563 }
3564
3565 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; )
3567 for (wl = childs [i]; wl; )
3568 {
3569 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn;
3572 }
3573/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575}
3576#endif
3577
2958#if EV_MULTIPLICITY 3578#if EV_MULTIPLICITY
2959 #include "ev_wrap.h" 3579 #include "ev_wrap.h"
2960#endif 3580#endif
2961 3581
2962#ifdef __cplusplus 3582#ifdef __cplusplus

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