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Comparing libev/ev.c (file contents):
Revision 1.267 by root, Mon Oct 27 11:08:29 2008 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 2010 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) 2007,2008,2009,2010 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
… …
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# 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
… …
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
136#include <fcntl.h> 159#include <fcntl.h>
137#include <stddef.h> 160#include <stddef.h>
138 161
139#include <stdio.h> 162#include <stdio.h>
140 163
141#include <assert.h> 164#include <assert.h>
142#include <errno.h> 165#include <errno.h>
143#include <sys/types.h> 166#include <sys/types.h>
144#include <time.h> 167#include <time.h>
168#include <limits.h>
145 169
146#include <signal.h> 170#include <signal.h>
147 171
148#ifdef EV_H 172#ifdef EV_H
149# include EV_H 173# include EV_H
… …
164# endif 188# endif
165#endif 189#endif
166 190
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 191/* this block tries to deduce configuration from header-defined symbols and defaults */
168 192
193/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG)
195/* use what's provided */
196#elif defined (NSIG)
197# define EV_NSIG (NSIG)
198#elif defined(_NSIG)
199# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX)
201# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX)
203# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX)
205# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG)
207# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG)
209# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE)
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig)
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else
215# error "unable to find value for NSIG, please report"
216/* to make it compile regardless, just remove the above line */
217# define EV_NSIG 65
218#endif
219
220#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2
222# define EV_USE_CLOCK_SYSCALL 1
223# else
224# define EV_USE_CLOCK_SYSCALL 0
225# endif
226#endif
227
169#ifndef EV_USE_MONOTONIC 228#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 230# define EV_USE_MONOTONIC 1
172# else 231# else
173# define EV_USE_MONOTONIC 0 232# define EV_USE_MONOTONIC 0
174# endif 233# endif
175#endif 234#endif
176 235
177#ifndef EV_USE_REALTIME 236#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 238#endif
180 239
181#ifndef EV_USE_NANOSLEEP 240#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 241# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 242# define EV_USE_NANOSLEEP 1
… …
244# else 303# else
245# define EV_USE_EVENTFD 0 304# define EV_USE_EVENTFD 0
246# endif 305# endif
247#endif 306#endif
248 307
308#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1
311# else
312# define EV_USE_SIGNALFD 0
313# endif
314#endif
315
249#if 0 /* debugging */ 316#if 0 /* debugging */
250# define EV_VERIFY 3 317# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 318# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 319# define EV_HEAP_CACHE_AT 1
253#endif 320#endif
… …
262 329
263#ifndef EV_HEAP_CACHE_AT 330#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 331# define EV_HEAP_CACHE_AT !EV_MINIMAL
265#endif 332#endif
266 333
334/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
335/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h>
338# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1
342# else
343# undef EV_USE_CLOCK_SYSCALL
344# define EV_USE_CLOCK_SYSCALL 0
345# endif
346#endif
347
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 348/* this block fixes any misconfiguration where we know we run into trouble otherwise */
349
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
268 355
269#ifndef CLOCK_MONOTONIC 356#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 357# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 358# define EV_USE_MONOTONIC 0
272#endif 359#endif
… …
287# endif 374# endif
288#endif 375#endif
289 376
290#if EV_USE_INOTIFY 377#if EV_USE_INOTIFY
291# include <sys/utsname.h> 378# include <sys/utsname.h>
379# include <sys/statfs.h>
292# include <sys/inotify.h> 380# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 381/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 382# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
… …
302#endif 390#endif
303 391
304#if EV_USE_EVENTFD 392#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 393/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 394# include <stdint.h>
395# ifndef EFD_NONBLOCK
396# define EFD_NONBLOCK O_NONBLOCK
397# endif
398# ifndef EFD_CLOEXEC
399# ifdef O_CLOEXEC
400# define EFD_CLOEXEC O_CLOEXEC
401# else
402# define EFD_CLOEXEC 02000000
403# endif
404# endif
307# ifdef __cplusplus 405# ifdef __cplusplus
308extern "C" { 406extern "C" {
309# endif 407# endif
310int eventfd (unsigned int initval, int flags); 408int eventfd (unsigned int initval, int flags);
311# ifdef __cplusplus 409# ifdef __cplusplus
312} 410}
313# endif 411# endif
314#endif 412#endif
413
414#if EV_USE_SIGNALFD
415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
416# include <stdint.h>
417# ifndef SFD_NONBLOCK
418# define SFD_NONBLOCK O_NONBLOCK
419# endif
420# ifndef SFD_CLOEXEC
421# ifdef O_CLOEXEC
422# define SFD_CLOEXEC O_CLOEXEC
423# else
424# define SFD_CLOEXEC 02000000
425# endif
426# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
437# ifdef __cplusplus
438}
439# endif
440#endif
441
315 442
316/**/ 443/**/
317 444
318#if EV_VERIFY >= 3 445#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
… …
331 */ 458 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 460
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 463
338#if __GNUC__ >= 4 464#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 465# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 466# define noinline __attribute__ ((noinline))
341#else 467#else
… …
354# define inline_speed static noinline 480# define inline_speed static noinline
355#else 481#else
356# define inline_speed static inline 482# define inline_speed static inline
357#endif 483#endif
358 484
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486
487#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0)
489#else
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif
361 492
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 493#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 494#define EMPTY2(a,b) /* used to suppress some warnings */
364 495
365typedef ev_watcher *W; 496typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 498typedef ev_watcher_time *WT;
368 499
369#define ev_active(w) ((W)(w))->active 500#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 501#define ev_at(w) ((WT)(w))->at
371 502
372#if EV_USE_MONOTONIC 503#if EV_USE_REALTIME
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 504/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */ 505/* giving it a reasonably high chance of working on typical architetcures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif
508
509#if EV_USE_MONOTONIC
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
511#endif
512
513#ifndef EV_FD_TO_WIN32_HANDLE
514# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
515#endif
516#ifndef EV_WIN32_HANDLE_TO_FD
517# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
518#endif
519#ifndef EV_WIN32_CLOSE_FD
520# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 521#endif
377 522
378#ifdef _WIN32 523#ifdef _WIN32
379# include "ev_win32.c" 524# include "ev_win32.c"
380#endif 525#endif
… …
388{ 533{
389 syserr_cb = cb; 534 syserr_cb = cb;
390} 535}
391 536
392static void noinline 537static void noinline
393syserr (const char *msg) 538ev_syserr (const char *msg)
394{ 539{
395 if (!msg) 540 if (!msg)
396 msg = "(libev) system error"; 541 msg = "(libev) system error";
397 542
398 if (syserr_cb) 543 if (syserr_cb)
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 589#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 590#define ev_free(ptr) ev_realloc ((ptr), 0)
446 591
447/*****************************************************************************/ 592/*****************************************************************************/
448 593
594/* set in reify when reification needed */
595#define EV_ANFD_REIFY 1
596
597/* file descriptor info structure */
449typedef struct 598typedef struct
450{ 599{
451 WL head; 600 WL head;
452 unsigned char events; 601 unsigned char events; /* the events watched for */
453 unsigned char reify; 602 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 603 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
604 unsigned char unused;
605#if EV_USE_EPOLL
455 unsigned char egen; /* generation counter to counter epoll bugs */ 606 unsigned int egen; /* generation counter to counter epoll bugs */
607#endif
456#if EV_SELECT_IS_WINSOCKET 608#if EV_SELECT_IS_WINSOCKET
457 SOCKET handle; 609 SOCKET handle;
458#endif 610#endif
459} ANFD; 611} ANFD;
460 612
613/* stores the pending event set for a given watcher */
461typedef struct 614typedef struct
462{ 615{
463 W w; 616 W w;
464 int events; 617 int events; /* the pending event set for the given watcher */
465} ANPENDING; 618} ANPENDING;
466 619
467#if EV_USE_INOTIFY 620#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 621/* hash table entry per inotify-id */
469typedef struct 622typedef struct
… …
472} ANFS; 625} ANFS;
473#endif 626#endif
474 627
475/* Heap Entry */ 628/* Heap Entry */
476#if EV_HEAP_CACHE_AT 629#if EV_HEAP_CACHE_AT
630 /* a heap element */
477 typedef struct { 631 typedef struct {
478 ev_tstamp at; 632 ev_tstamp at;
479 WT w; 633 WT w;
480 } ANHE; 634 } ANHE;
481 635
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 636 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 637 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 638 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else 639#else
640 /* a heap element */
486 typedef WT ANHE; 641 typedef WT ANHE;
487 642
488 #define ANHE_w(he) (he) 643 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 644 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 645 #define ANHE_at_cache(he)
… …
514 669
515 static int ev_default_loop_ptr; 670 static int ev_default_loop_ptr;
516 671
517#endif 672#endif
518 673
674#if EV_MINIMAL < 2
675# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
676# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
677# define EV_INVOKE_PENDING invoke_cb (EV_A)
678#else
679# define EV_RELEASE_CB (void)0
680# define EV_ACQUIRE_CB (void)0
681# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
682#endif
683
684#define EVUNLOOP_RECURSE 0x80
685
519/*****************************************************************************/ 686/*****************************************************************************/
520 687
688#ifndef EV_HAVE_EV_TIME
521ev_tstamp 689ev_tstamp
522ev_time (void) 690ev_time (void)
523{ 691{
524#if EV_USE_REALTIME 692#if EV_USE_REALTIME
693 if (expect_true (have_realtime))
694 {
525 struct timespec ts; 695 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 696 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 697 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 698 }
699#endif
700
529 struct timeval tv; 701 struct timeval tv;
530 gettimeofday (&tv, 0); 702 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 703 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 704}
705#endif
534 706
535ev_tstamp inline_size 707inline_size ev_tstamp
536get_clock (void) 708get_clock (void)
537{ 709{
538#if EV_USE_MONOTONIC 710#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 711 if (expect_true (have_monotonic))
540 { 712 {
… …
574 746
575 tv.tv_sec = (time_t)delay; 747 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 748 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577 749
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 750 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 751 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 752 /* by older ones */
581 select (0, 0, 0, 0, &tv); 753 select (0, 0, 0, 0, &tv);
582#endif 754#endif
583 } 755 }
584} 756}
585 757
586/*****************************************************************************/ 758/*****************************************************************************/
587 759
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 760#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589 761
590int inline_size 762/* find a suitable new size for the given array, */
763/* hopefully by rounding to a ncie-to-malloc size */
764inline_size int
591array_nextsize (int elem, int cur, int cnt) 765array_nextsize (int elem, int cur, int cnt)
592{ 766{
593 int ncur = cur + 1; 767 int ncur = cur + 1;
594 768
595 do 769 do
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 810 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 811 }
638#endif 812#endif
639 813
640#define array_free(stem, idx) \ 814#define array_free(stem, idx) \
641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 815 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642 816
643/*****************************************************************************/ 817/*****************************************************************************/
818
819/* dummy callback for pending events */
820static void noinline
821pendingcb (EV_P_ ev_prepare *w, int revents)
822{
823}
644 824
645void noinline 825void noinline
646ev_feed_event (EV_P_ void *w, int revents) 826ev_feed_event (EV_P_ void *w, int revents)
647{ 827{
648 W w_ = (W)w; 828 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 837 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 838 pendings [pri][w_->pending - 1].events = revents;
659 } 839 }
660} 840}
661 841
662void inline_speed 842inline_speed void
843feed_reverse (EV_P_ W w)
844{
845 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
846 rfeeds [rfeedcnt++] = w;
847}
848
849inline_size void
850feed_reverse_done (EV_P_ int revents)
851{
852 do
853 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
854 while (rfeedcnt);
855}
856
857inline_speed void
663queue_events (EV_P_ W *events, int eventcnt, int type) 858queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 859{
665 int i; 860 int i;
666 861
667 for (i = 0; i < eventcnt; ++i) 862 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 863 ev_feed_event (EV_A_ events [i], type);
669} 864}
670 865
671/*****************************************************************************/ 866/*****************************************************************************/
672 867
673void inline_speed 868inline_speed void
674fd_event (EV_P_ int fd, int revents) 869fd_event_nc (EV_P_ int fd, int revents)
675{ 870{
676 ANFD *anfd = anfds + fd; 871 ANFD *anfd = anfds + fd;
677 ev_io *w; 872 ev_io *w;
678 873
679 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
683 if (ev) 878 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 879 ev_feed_event (EV_A_ (W)w, ev);
685 } 880 }
686} 881}
687 882
883/* do not submit kernel events for fds that have reify set */
884/* because that means they changed while we were polling for new events */
885inline_speed void
886fd_event (EV_P_ int fd, int revents)
887{
888 ANFD *anfd = anfds + fd;
889
890 if (expect_true (!anfd->reify))
891 fd_event_nc (EV_A_ fd, revents);
892}
893
688void 894void
689ev_feed_fd_event (EV_P_ int fd, int revents) 895ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 896{
691 if (fd >= 0 && fd < anfdmax) 897 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 898 fd_event_nc (EV_A_ fd, revents);
693} 899}
694 900
695void inline_size 901/* make sure the external fd watch events are in-sync */
902/* with the kernel/libev internal state */
903inline_size void
696fd_reify (EV_P) 904fd_reify (EV_P)
697{ 905{
698 int i; 906 int i;
699 907
700 for (i = 0; i < fdchangecnt; ++i) 908 for (i = 0; i < fdchangecnt; ++i)
… …
710 918
711#if EV_SELECT_IS_WINSOCKET 919#if EV_SELECT_IS_WINSOCKET
712 if (events) 920 if (events)
713 { 921 {
714 unsigned long arg; 922 unsigned long arg;
715 #ifdef EV_FD_TO_WIN32_HANDLE
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717 #else
718 anfd->handle = _get_osfhandle (fd);
719 #endif
720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 924 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
721 } 925 }
722#endif 926#endif
723 927
724 { 928 {
725 unsigned char o_events = anfd->events; 929 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify; 930 unsigned char o_reify = anfd->reify;
727 931
728 anfd->reify = 0; 932 anfd->reify = 0;
729 anfd->events = events; 933 anfd->events = events;
730 934
731 if (o_events != events || o_reify & EV_IOFDSET) 935 if (o_events != events || o_reify & EV__IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events); 936 backend_modify (EV_A_ fd, o_events, events);
733 } 937 }
734 } 938 }
735 939
736 fdchangecnt = 0; 940 fdchangecnt = 0;
737} 941}
738 942
739void inline_size 943/* something about the given fd changed */
944inline_size void
740fd_change (EV_P_ int fd, int flags) 945fd_change (EV_P_ int fd, int flags)
741{ 946{
742 unsigned char reify = anfds [fd].reify; 947 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 948 anfds [fd].reify |= flags;
744 949
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 953 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 954 fdchanges [fdchangecnt - 1] = fd;
750 } 955 }
751} 956}
752 957
753void inline_speed 958/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
959inline_speed void
754fd_kill (EV_P_ int fd) 960fd_kill (EV_P_ int fd)
755{ 961{
756 ev_io *w; 962 ev_io *w;
757 963
758 while ((w = (ev_io *)anfds [fd].head)) 964 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 966 ev_io_stop (EV_A_ w);
761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 967 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762 } 968 }
763} 969}
764 970
765int inline_size 971/* check whether the given fd is atcually valid, for error recovery */
972inline_size int
766fd_valid (int fd) 973fd_valid (int fd)
767{ 974{
768#ifdef _WIN32 975#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 976 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 977#else
771 return fcntl (fd, F_GETFD) != -1; 978 return fcntl (fd, F_GETFD) != -1;
772#endif 979#endif
773} 980}
774 981
… …
792 999
793 for (fd = anfdmax; fd--; ) 1000 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1001 if (anfds [fd].events)
795 { 1002 {
796 fd_kill (EV_A_ fd); 1003 fd_kill (EV_A_ fd);
797 return; 1004 break;
798 } 1005 }
799} 1006}
800 1007
801/* usually called after fork if backend needs to re-arm all fds from scratch */ 1008/* usually called after fork if backend needs to re-arm all fds from scratch */
802static void noinline 1009static void noinline
… …
806 1013
807 for (fd = 0; fd < anfdmax; ++fd) 1014 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1015 if (anfds [fd].events)
809 { 1016 {
810 anfds [fd].events = 0; 1017 anfds [fd].events = 0;
1018 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1019 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1020 }
813} 1021}
814 1022
815/*****************************************************************************/ 1023/*****************************************************************************/
816 1024
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1040#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1041#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1042#define UPHEAP_DONE(p,k) ((p) == (k))
835 1043
836/* away from the root */ 1044/* away from the root */
837void inline_speed 1045inline_speed void
838downheap (ANHE *heap, int N, int k) 1046downheap (ANHE *heap, int N, int k)
839{ 1047{
840 ANHE he = heap [k]; 1048 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1049 ANHE *E = heap + N + HEAP0;
842 1050
… …
882#define HEAP0 1 1090#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1091#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1092#define UPHEAP_DONE(p,k) (!(p))
885 1093
886/* away from the root */ 1094/* away from the root */
887void inline_speed 1095inline_speed void
888downheap (ANHE *heap, int N, int k) 1096downheap (ANHE *heap, int N, int k)
889{ 1097{
890 ANHE he = heap [k]; 1098 ANHE he = heap [k];
891 1099
892 for (;;) 1100 for (;;)
893 { 1101 {
894 int c = k << 1; 1102 int c = k << 1;
895 1103
896 if (c > N + HEAP0 - 1) 1104 if (c >= N + HEAP0)
897 break; 1105 break;
898 1106
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1107 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0; 1108 ? 1 : 0;
901 1109
… …
912 ev_active (ANHE_w (he)) = k; 1120 ev_active (ANHE_w (he)) = k;
913} 1121}
914#endif 1122#endif
915 1123
916/* towards the root */ 1124/* towards the root */
917void inline_speed 1125inline_speed void
918upheap (ANHE *heap, int k) 1126upheap (ANHE *heap, int k)
919{ 1127{
920 ANHE he = heap [k]; 1128 ANHE he = heap [k];
921 1129
922 for (;;) 1130 for (;;)
… …
933 1141
934 heap [k] = he; 1142 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1143 ev_active (ANHE_w (he)) = k;
936} 1144}
937 1145
938void inline_size 1146/* move an element suitably so it is in a correct place */
1147inline_size void
939adjustheap (ANHE *heap, int N, int k) 1148adjustheap (ANHE *heap, int N, int k)
940{ 1149{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1150 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942 upheap (heap, k); 1151 upheap (heap, k);
943 else 1152 else
944 downheap (heap, N, k); 1153 downheap (heap, N, k);
945} 1154}
946 1155
947/* rebuild the heap: this function is used only once and executed rarely */ 1156/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size 1157inline_size void
949reheap (ANHE *heap, int N) 1158reheap (ANHE *heap, int N)
950{ 1159{
951 int i; 1160 int i;
952 1161
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1162 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
956 upheap (heap, i + HEAP0); 1165 upheap (heap, i + HEAP0);
957} 1166}
958 1167
959/*****************************************************************************/ 1168/*****************************************************************************/
960 1169
1170/* associate signal watchers to a signal signal */
961typedef struct 1171typedef struct
962{ 1172{
1173 EV_ATOMIC_T pending;
1174#if EV_MULTIPLICITY
1175 EV_P;
1176#endif
963 WL head; 1177 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1178} ANSIG;
966 1179
967static ANSIG *signals; 1180static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1181
972/*****************************************************************************/ 1182/*****************************************************************************/
973 1183
974void inline_speed 1184/* used to prepare libev internal fd's */
1185/* this is not fork-safe */
1186inline_speed void
975fd_intern (int fd) 1187fd_intern (int fd)
976{ 1188{
977#ifdef _WIN32 1189#ifdef _WIN32
978 unsigned long arg = 1; 1190 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
980#else 1192#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC); 1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK); 1194 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif 1195#endif
984} 1196}
985 1197
986static void noinline 1198static void noinline
987evpipe_init (EV_P) 1199evpipe_init (EV_P)
988{ 1200{
989 if (!ev_is_active (&pipeev)) 1201 if (!ev_is_active (&pipe_w))
990 { 1202 {
991#if EV_USE_EVENTFD 1203#if EV_USE_EVENTFD
1204 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1205 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1206 evfd = eventfd (0, 0);
1207
1208 if (evfd >= 0)
993 { 1209 {
994 evpipe [0] = -1; 1210 evpipe [0] = -1;
995 fd_intern (evfd); 1211 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1212 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1213 }
998 else 1214 else
999#endif 1215#endif
1000 { 1216 {
1001 while (pipe (evpipe)) 1217 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1218 ev_syserr ("(libev) error creating signal/async pipe");
1003 1219
1004 fd_intern (evpipe [0]); 1220 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1221 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1222 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1223 }
1008 1224
1009 ev_io_start (EV_A_ &pipeev); 1225 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1226 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1227 }
1012} 1228}
1013 1229
1014void inline_size 1230inline_size void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1231evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1232{
1017 if (!*flag) 1233 if (!*flag)
1018 { 1234 {
1019 int old_errno = errno; /* save errno because write might clobber it */ 1235 int old_errno = errno; /* save errno because write might clobber it */
… …
1032 1248
1033 errno = old_errno; 1249 errno = old_errno;
1034 } 1250 }
1035} 1251}
1036 1252
1253/* called whenever the libev signal pipe */
1254/* got some events (signal, async) */
1037static void 1255static void
1038pipecb (EV_P_ ev_io *iow, int revents) 1256pipecb (EV_P_ ev_io *iow, int revents)
1039{ 1257{
1258 int i;
1259
1040#if EV_USE_EVENTFD 1260#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1261 if (evfd >= 0)
1042 { 1262 {
1043 uint64_t counter; 1263 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t)); 1264 read (evfd, &counter, sizeof (uint64_t));
… …
1048 { 1268 {
1049 char dummy; 1269 char dummy;
1050 read (evpipe [0], &dummy, 1); 1270 read (evpipe [0], &dummy, 1);
1051 } 1271 }
1052 1272
1053 if (gotsig && ev_is_default_loop (EV_A)) 1273 if (sig_pending)
1054 { 1274 {
1055 int signum; 1275 sig_pending = 0;
1056 gotsig = 0;
1057 1276
1058 for (signum = signalmax; signum--; ) 1277 for (i = EV_NSIG - 1; i--; )
1059 if (signals [signum].gotsig) 1278 if (expect_false (signals [i].pending))
1060 ev_feed_signal_event (EV_A_ signum + 1); 1279 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1280 }
1062 1281
1063#if EV_ASYNC_ENABLE 1282#if EV_ASYNC_ENABLE
1064 if (gotasync) 1283 if (async_pending)
1065 { 1284 {
1066 int i; 1285 async_pending = 0;
1067 gotasync = 0;
1068 1286
1069 for (i = asynccnt; i--; ) 1287 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1288 if (asyncs [i]->sent)
1071 { 1289 {
1072 asyncs [i]->sent = 0; 1290 asyncs [i]->sent = 0;
… …
1080 1298
1081static void 1299static void
1082ev_sighandler (int signum) 1300ev_sighandler (int signum)
1083{ 1301{
1084#if EV_MULTIPLICITY 1302#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct; 1303 EV_P = signals [signum - 1].loop;
1086#endif 1304#endif
1087 1305
1088#if _WIN32 1306#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1307 signal (signum, ev_sighandler);
1090#endif 1308#endif
1091 1309
1092 signals [signum - 1].gotsig = 1; 1310 signals [signum - 1].pending = 1;
1093 evpipe_write (EV_A_ &gotsig); 1311 evpipe_write (EV_A_ &sig_pending);
1094} 1312}
1095 1313
1096void noinline 1314void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1315ev_feed_signal_event (EV_P_ int signum)
1098{ 1316{
1099 WL w; 1317 WL w;
1100 1318
1319 if (expect_false (signum <= 0 || signum > EV_NSIG))
1320 return;
1321
1322 --signum;
1323
1101#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1325 /* it is permissible to try to feed a signal to the wrong loop */
1103#endif 1326 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1327
1105 --signum; 1328 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1329 return;
1330#endif
1109 1331
1110 signals [signum].gotsig = 0; 1332 signals [signum].pending = 0;
1111 1333
1112 for (w = signals [signum].head; w; w = w->next) 1334 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1336}
1115 1337
1338#if EV_USE_SIGNALFD
1339static void
1340sigfdcb (EV_P_ ev_io *iow, int revents)
1341{
1342 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1343
1344 for (;;)
1345 {
1346 ssize_t res = read (sigfd, si, sizeof (si));
1347
1348 /* not ISO-C, as res might be -1, but works with SuS */
1349 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1350 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1351
1352 if (res < (ssize_t)sizeof (si))
1353 break;
1354 }
1355}
1356#endif
1357
1116/*****************************************************************************/ 1358/*****************************************************************************/
1117 1359
1118static WL childs [EV_PID_HASHSIZE]; 1360static WL childs [EV_PID_HASHSIZE];
1119 1361
1120#ifndef _WIN32 1362#ifndef _WIN32
… …
1123 1365
1124#ifndef WIFCONTINUED 1366#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1367# define WIFCONTINUED(status) 0
1126#endif 1368#endif
1127 1369
1128void inline_speed 1370/* handle a single child status event */
1371inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1372child_reap (EV_P_ int chain, int pid, int status)
1130{ 1373{
1131 ev_child *w; 1374 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1375 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1376
… …
1146 1389
1147#ifndef WCONTINUED 1390#ifndef WCONTINUED
1148# define WCONTINUED 0 1391# define WCONTINUED 0
1149#endif 1392#endif
1150 1393
1394/* called on sigchld etc., calls waitpid */
1151static void 1395static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1396childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1397{
1154 int pid, status; 1398 int pid, status;
1155 1399
… …
1236 /* kqueue is borked on everything but netbsd apparently */ 1480 /* kqueue is borked on everything but netbsd apparently */
1237 /* it usually doesn't work correctly on anything but sockets and pipes */ 1481 /* it usually doesn't work correctly on anything but sockets and pipes */
1238 flags &= ~EVBACKEND_KQUEUE; 1482 flags &= ~EVBACKEND_KQUEUE;
1239#endif 1483#endif
1240#ifdef __APPLE__ 1484#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 1485 /* only select works correctly on that "unix-certified" platform */
1242 flags &= ~EVBACKEND_POLL; 1486 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1487 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1243#endif 1488#endif
1244 1489
1245 return flags; 1490 return flags;
1246} 1491}
1247 1492
… …
1261ev_backend (EV_P) 1506ev_backend (EV_P)
1262{ 1507{
1263 return backend; 1508 return backend;
1264} 1509}
1265 1510
1511#if EV_MINIMAL < 2
1266unsigned int 1512unsigned int
1267ev_loop_count (EV_P) 1513ev_loop_count (EV_P)
1268{ 1514{
1269 return loop_count; 1515 return loop_count;
1270} 1516}
1271 1517
1518unsigned int
1519ev_loop_depth (EV_P)
1520{
1521 return loop_depth;
1522}
1523
1272void 1524void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1525ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 1526{
1275 io_blocktime = interval; 1527 io_blocktime = interval;
1276} 1528}
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1531ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 1532{
1281 timeout_blocktime = interval; 1533 timeout_blocktime = interval;
1282} 1534}
1283 1535
1536void
1537ev_set_userdata (EV_P_ void *data)
1538{
1539 userdata = data;
1540}
1541
1542void *
1543ev_userdata (EV_P)
1544{
1545 return userdata;
1546}
1547
1548void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1549{
1550 invoke_cb = invoke_pending_cb;
1551}
1552
1553void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1554{
1555 release_cb = release;
1556 acquire_cb = acquire;
1557}
1558#endif
1559
1560/* initialise a loop structure, must be zero-initialised */
1284static void noinline 1561static void noinline
1285loop_init (EV_P_ unsigned int flags) 1562loop_init (EV_P_ unsigned int flags)
1286{ 1563{
1287 if (!backend) 1564 if (!backend)
1288 { 1565 {
1566#if EV_USE_REALTIME
1567 if (!have_realtime)
1568 {
1569 struct timespec ts;
1570
1571 if (!clock_gettime (CLOCK_REALTIME, &ts))
1572 have_realtime = 1;
1573 }
1574#endif
1575
1289#if EV_USE_MONOTONIC 1576#if EV_USE_MONOTONIC
1577 if (!have_monotonic)
1290 { 1578 {
1291 struct timespec ts; 1579 struct timespec ts;
1580
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1581 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 1582 have_monotonic = 1;
1294 } 1583 }
1295#endif 1584#endif
1585
1586 /* pid check not overridable via env */
1587#ifndef _WIN32
1588 if (flags & EVFLAG_FORKCHECK)
1589 curpid = getpid ();
1590#endif
1591
1592 if (!(flags & EVFLAG_NOENV)
1593 && !enable_secure ()
1594 && getenv ("LIBEV_FLAGS"))
1595 flags = atoi (getenv ("LIBEV_FLAGS"));
1296 1596
1297 ev_rt_now = ev_time (); 1597 ev_rt_now = ev_time ();
1298 mn_now = get_clock (); 1598 mn_now = get_clock ();
1299 now_floor = mn_now; 1599 now_floor = mn_now;
1300 rtmn_diff = ev_rt_now - mn_now; 1600 rtmn_diff = ev_rt_now - mn_now;
1601#if EV_MINIMAL < 2
1602 invoke_cb = ev_invoke_pending;
1603#endif
1301 1604
1302 io_blocktime = 0.; 1605 io_blocktime = 0.;
1303 timeout_blocktime = 0.; 1606 timeout_blocktime = 0.;
1304 backend = 0; 1607 backend = 0;
1305 backend_fd = -1; 1608 backend_fd = -1;
1306 gotasync = 0; 1609 sig_pending = 0;
1610#if EV_ASYNC_ENABLE
1611 async_pending = 0;
1612#endif
1307#if EV_USE_INOTIFY 1613#if EV_USE_INOTIFY
1308 fs_fd = -2; 1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1309#endif 1615#endif
1310 1616#if EV_USE_SIGNALFD
1311 /* pid check not overridable via env */ 1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1312#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK)
1314 curpid = getpid ();
1315#endif 1618#endif
1316
1317 if (!(flags & EVFLAG_NOENV)
1318 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS"));
1321 1619
1322 if (!(flags & 0x0000ffffU)) 1620 if (!(flags & 0x0000ffffU))
1323 flags |= ev_recommended_backends (); 1621 flags |= ev_recommended_backends ();
1324 1622
1325#if EV_USE_PORT 1623#if EV_USE_PORT
… …
1336#endif 1634#endif
1337#if EV_USE_SELECT 1635#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1636 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 1637#endif
1340 1638
1639 ev_prepare_init (&pending_w, pendingcb);
1640
1341 ev_init (&pipeev, pipecb); 1641 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 1642 ev_set_priority (&pipe_w, EV_MAXPRI);
1343 } 1643 }
1344} 1644}
1345 1645
1646/* free up a loop structure */
1346static void noinline 1647static void noinline
1347loop_destroy (EV_P) 1648loop_destroy (EV_P)
1348{ 1649{
1349 int i; 1650 int i;
1350 1651
1351 if (ev_is_active (&pipeev)) 1652 if (ev_is_active (&pipe_w))
1352 { 1653 {
1353 ev_ref (EV_A); /* signal watcher */ 1654 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1655 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1656
1356#if EV_USE_EVENTFD 1657#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1658 if (evfd >= 0)
1358 close (evfd); 1659 close (evfd);
1359#endif 1660#endif
1360 1661
1361 if (evpipe [0] >= 0) 1662 if (evpipe [0] >= 0)
1362 { 1663 {
1363 close (evpipe [0]); 1664 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1665 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1666 }
1366 } 1667 }
1668
1669#if EV_USE_SIGNALFD
1670 if (ev_is_active (&sigfd_w))
1671 close (sigfd);
1672#endif
1367 1673
1368#if EV_USE_INOTIFY 1674#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1675 if (fs_fd >= 0)
1370 close (fs_fd); 1676 close (fs_fd);
1371#endif 1677#endif
… …
1395#if EV_IDLE_ENABLE 1701#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 1702 array_free (idle, [i]);
1397#endif 1703#endif
1398 } 1704 }
1399 1705
1400 ev_free (anfds); anfdmax = 0; 1706 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 1707
1402 /* have to use the microsoft-never-gets-it-right macro */ 1708 /* have to use the microsoft-never-gets-it-right macro */
1709 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 1710 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 1711 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 1712#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 1713 array_free (periodic, EMPTY);
1407#endif 1714#endif
… …
1416 1723
1417 backend = 0; 1724 backend = 0;
1418} 1725}
1419 1726
1420#if EV_USE_INOTIFY 1727#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 1728inline_size void infy_fork (EV_P);
1422#endif 1729#endif
1423 1730
1424void inline_size 1731inline_size void
1425loop_fork (EV_P) 1732loop_fork (EV_P)
1426{ 1733{
1427#if EV_USE_PORT 1734#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1735 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 1736#endif
… …
1435#endif 1742#endif
1436#if EV_USE_INOTIFY 1743#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 1744 infy_fork (EV_A);
1438#endif 1745#endif
1439 1746
1440 if (ev_is_active (&pipeev)) 1747 if (ev_is_active (&pipe_w))
1441 { 1748 {
1442 /* this "locks" the handlers against writing to the pipe */ 1749 /* this "locks" the handlers against writing to the pipe */
1443 /* while we modify the fd vars */ 1750 /* while we modify the fd vars */
1444 gotsig = 1; 1751 sig_pending = 1;
1445#if EV_ASYNC_ENABLE 1752#if EV_ASYNC_ENABLE
1446 gotasync = 1; 1753 async_pending = 1;
1447#endif 1754#endif
1448 1755
1449 ev_ref (EV_A); 1756 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 1757 ev_io_stop (EV_A_ &pipe_w);
1451 1758
1452#if EV_USE_EVENTFD 1759#if EV_USE_EVENTFD
1453 if (evfd >= 0) 1760 if (evfd >= 0)
1454 close (evfd); 1761 close (evfd);
1455#endif 1762#endif
1456 1763
1457 if (evpipe [0] >= 0) 1764 if (evpipe [0] >= 0)
1458 { 1765 {
1459 close (evpipe [0]); 1766 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 1767 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 1768 }
1462 1769
1463 evpipe_init (EV_A); 1770 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 1771 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 1772 pipecb (EV_A_ &pipe_w, EV_READ);
1466 } 1773 }
1467 1774
1468 postfork = 0; 1775 postfork = 0;
1469} 1776}
1470 1777
1471#if EV_MULTIPLICITY 1778#if EV_MULTIPLICITY
1472 1779
1473struct ev_loop * 1780struct ev_loop *
1474ev_loop_new (unsigned int flags) 1781ev_loop_new (unsigned int flags)
1475{ 1782{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1783 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 1784
1478 memset (loop, 0, sizeof (struct ev_loop)); 1785 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 1786 loop_init (EV_A_ flags);
1481 1787
1482 if (ev_backend (EV_A)) 1788 if (ev_backend (EV_A))
1483 return loop; 1789 return EV_A;
1484 1790
1485 return 0; 1791 return 0;
1486} 1792}
1487 1793
1488void 1794void
… …
1495void 1801void
1496ev_loop_fork (EV_P) 1802ev_loop_fork (EV_P)
1497{ 1803{
1498 postfork = 1; /* must be in line with ev_default_fork */ 1804 postfork = 1; /* must be in line with ev_default_fork */
1499} 1805}
1806#endif /* multiplicity */
1500 1807
1501#if EV_VERIFY 1808#if EV_VERIFY
1502static void noinline 1809static void noinline
1503verify_watcher (EV_P_ W w) 1810verify_watcher (EV_P_ W w)
1504{ 1811{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1812 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 1813
1507 if (w->pending) 1814 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1815 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 1816}
1510 1817
1511static void noinline 1818static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N) 1819verify_heap (EV_P_ ANHE *heap, int N)
1513{ 1820{
1514 int i; 1821 int i;
1515 1822
1516 for (i = HEAP0; i < N + HEAP0; ++i) 1823 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 1824 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1825 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1826 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1827 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 1828
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1829 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 1830 }
1524} 1831}
1525 1832
1526static void noinline 1833static void noinline
1527array_verify (EV_P_ W *ws, int cnt) 1834array_verify (EV_P_ W *ws, int cnt)
1528{ 1835{
1529 while (cnt--) 1836 while (cnt--)
1530 { 1837 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1838 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 1839 verify_watcher (EV_A_ ws [cnt]);
1533 } 1840 }
1534} 1841}
1535#endif 1842#endif
1536 1843
1844#if EV_MINIMAL < 2
1537void 1845void
1538ev_loop_verify (EV_P) 1846ev_loop_verify (EV_P)
1539{ 1847{
1540#if EV_VERIFY 1848#if EV_VERIFY
1541 int i; 1849 int i;
… …
1543 1851
1544 assert (activecnt >= -1); 1852 assert (activecnt >= -1);
1545 1853
1546 assert (fdchangemax >= fdchangecnt); 1854 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 1855 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1856 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 1857
1550 assert (anfdmax >= 0); 1858 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 1859 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 1860 for (w = anfds [i].head; w; w = w->next)
1553 { 1861 {
1554 verify_watcher (EV_A_ (W)w); 1862 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 1865 }
1558 1866
1559 assert (timermax >= timercnt); 1867 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 1868 verify_heap (EV_A_ timers, timercnt);
1561 1869
… …
1590 assert (checkmax >= checkcnt); 1898 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 1899 array_verify (EV_A_ (W *)checks, checkcnt);
1592 1900
1593# if 0 1901# if 0
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1902 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1903 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1596# endif
1597#endif 1904# endif
1905#endif
1598} 1906}
1599 1907#endif
1600#endif /* multiplicity */
1601 1908
1602#if EV_MULTIPLICITY 1909#if EV_MULTIPLICITY
1603struct ev_loop * 1910struct ev_loop *
1604ev_default_loop_init (unsigned int flags) 1911ev_default_loop_init (unsigned int flags)
1605#else 1912#else
… …
1608#endif 1915#endif
1609{ 1916{
1610 if (!ev_default_loop_ptr) 1917 if (!ev_default_loop_ptr)
1611 { 1918 {
1612#if EV_MULTIPLICITY 1919#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1920 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 1921#else
1615 ev_default_loop_ptr = 1; 1922 ev_default_loop_ptr = 1;
1616#endif 1923#endif
1617 1924
1618 loop_init (EV_A_ flags); 1925 loop_init (EV_A_ flags);
… …
1635 1942
1636void 1943void
1637ev_default_destroy (void) 1944ev_default_destroy (void)
1638{ 1945{
1639#if EV_MULTIPLICITY 1946#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr; 1947 EV_P = ev_default_loop_ptr;
1641#endif 1948#endif
1642 1949
1643 ev_default_loop_ptr = 0; 1950 ev_default_loop_ptr = 0;
1644 1951
1645#ifndef _WIN32 1952#ifndef _WIN32
… …
1652 1959
1653void 1960void
1654ev_default_fork (void) 1961ev_default_fork (void)
1655{ 1962{
1656#if EV_MULTIPLICITY 1963#if EV_MULTIPLICITY
1657 struct ev_loop *loop = ev_default_loop_ptr; 1964 EV_P = ev_default_loop_ptr;
1658#endif 1965#endif
1659 1966
1660 if (backend)
1661 postfork = 1; /* must be in line with ev_loop_fork */ 1967 postfork = 1; /* must be in line with ev_loop_fork */
1662} 1968}
1663 1969
1664/*****************************************************************************/ 1970/*****************************************************************************/
1665 1971
1666void 1972void
1667ev_invoke (EV_P_ void *w, int revents) 1973ev_invoke (EV_P_ void *w, int revents)
1668{ 1974{
1669 EV_CB_INVOKE ((W)w, revents); 1975 EV_CB_INVOKE ((W)w, revents);
1670} 1976}
1671 1977
1672void inline_speed 1978unsigned int
1673call_pending (EV_P) 1979ev_pending_count (EV_P)
1980{
1981 int pri;
1982 unsigned int count = 0;
1983
1984 for (pri = NUMPRI; pri--; )
1985 count += pendingcnt [pri];
1986
1987 return count;
1988}
1989
1990void noinline
1991ev_invoke_pending (EV_P)
1674{ 1992{
1675 int pri; 1993 int pri;
1676 1994
1677 for (pri = NUMPRI; pri--; ) 1995 for (pri = NUMPRI; pri--; )
1678 while (pendingcnt [pri]) 1996 while (pendingcnt [pri])
1679 { 1997 {
1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1998 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681 1999
1682 if (expect_true (p->w))
1683 {
1684 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2000 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2001 /* ^ this is no longer true, as pending_w could be here */
1685 2002
1686 p->w->pending = 0; 2003 p->w->pending = 0;
1687 EV_CB_INVOKE (p->w, p->events); 2004 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK; 2005 EV_FREQUENT_CHECK;
1689 }
1690 } 2006 }
1691} 2007}
1692 2008
1693#if EV_IDLE_ENABLE 2009#if EV_IDLE_ENABLE
1694void inline_size 2010/* make idle watchers pending. this handles the "call-idle */
2011/* only when higher priorities are idle" logic */
2012inline_size void
1695idle_reify (EV_P) 2013idle_reify (EV_P)
1696{ 2014{
1697 if (expect_false (idleall)) 2015 if (expect_false (idleall))
1698 { 2016 {
1699 int pri; 2017 int pri;
… …
1711 } 2029 }
1712 } 2030 }
1713} 2031}
1714#endif 2032#endif
1715 2033
1716void inline_size 2034/* make timers pending */
2035inline_size void
1717timers_reify (EV_P) 2036timers_reify (EV_P)
1718{ 2037{
1719 EV_FREQUENT_CHECK; 2038 EV_FREQUENT_CHECK;
1720 2039
1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2040 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722 { 2041 {
1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2042 do
1724
1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727 /* first reschedule or stop timer */
1728 if (w->repeat)
1729 { 2043 {
2044 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2045
2046 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2047
2048 /* first reschedule or stop timer */
2049 if (w->repeat)
2050 {
1730 ev_at (w) += w->repeat; 2051 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now) 2052 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now; 2053 ev_at (w) = mn_now;
1733 2054
1734 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2055 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735 2056
1736 ANHE_at_cache (timers [HEAP0]); 2057 ANHE_at_cache (timers [HEAP0]);
1737 downheap (timers, timercnt, HEAP0); 2058 downheap (timers, timercnt, HEAP0);
2059 }
2060 else
2061 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2062
2063 EV_FREQUENT_CHECK;
2064 feed_reverse (EV_A_ (W)w);
1738 } 2065 }
1739 else 2066 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741 2067
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2068 feed_reverse_done (EV_A_ EV_TIMEOUT);
1744 } 2069 }
1745} 2070}
1746 2071
1747#if EV_PERIODIC_ENABLE 2072#if EV_PERIODIC_ENABLE
1748void inline_size 2073/* make periodics pending */
2074inline_size void
1749periodics_reify (EV_P) 2075periodics_reify (EV_P)
1750{ 2076{
1751 EV_FREQUENT_CHECK; 2077 EV_FREQUENT_CHECK;
1752 2078
1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2079 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754 { 2080 {
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2081 int feed_count = 0;
1756 2082
1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2083 do
1758
1759 /* first reschedule or stop timer */
1760 if (w->reschedule_cb)
1761 { 2084 {
2085 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2086
2087 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2088
2089 /* first reschedule or stop timer */
2090 if (w->reschedule_cb)
2091 {
1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2092 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763 2093
1764 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2094 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765 2095
1766 ANHE_at_cache (periodics [HEAP0]); 2096 ANHE_at_cache (periodics [HEAP0]);
1767 downheap (periodics, periodiccnt, HEAP0); 2097 downheap (periodics, periodiccnt, HEAP0);
2098 }
2099 else if (w->interval)
2100 {
2101 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2102 /* if next trigger time is not sufficiently in the future, put it there */
2103 /* this might happen because of floating point inexactness */
2104 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2105 {
2106 ev_at (w) += w->interval;
2107
2108 /* if interval is unreasonably low we might still have a time in the past */
2109 /* so correct this. this will make the periodic very inexact, but the user */
2110 /* has effectively asked to get triggered more often than possible */
2111 if (ev_at (w) < ev_rt_now)
2112 ev_at (w) = ev_rt_now;
2113 }
2114
2115 ANHE_at_cache (periodics [HEAP0]);
2116 downheap (periodics, periodiccnt, HEAP0);
2117 }
2118 else
2119 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2120
2121 EV_FREQUENT_CHECK;
2122 feed_reverse (EV_A_ (W)w);
1768 } 2123 }
1769 else if (w->interval) 2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770 {
1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777 2125
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1786 downheap (periodics, periodiccnt, HEAP0);
1787 }
1788 else
1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791 EV_FREQUENT_CHECK;
1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2126 feed_reverse_done (EV_A_ EV_PERIODIC);
1793 } 2127 }
1794} 2128}
1795 2129
2130/* simply recalculate all periodics */
2131/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1796static void noinline 2132static void noinline
1797periodics_reschedule (EV_P) 2133periodics_reschedule (EV_P)
1798{ 2134{
1799 int i; 2135 int i;
1800 2136
… …
1813 2149
1814 reheap (periodics, periodiccnt); 2150 reheap (periodics, periodiccnt);
1815} 2151}
1816#endif 2152#endif
1817 2153
1818void inline_speed 2154/* adjust all timers by a given offset */
2155static void noinline
2156timers_reschedule (EV_P_ ev_tstamp adjust)
2157{
2158 int i;
2159
2160 for (i = 0; i < timercnt; ++i)
2161 {
2162 ANHE *he = timers + i + HEAP0;
2163 ANHE_w (*he)->at += adjust;
2164 ANHE_at_cache (*he);
2165 }
2166}
2167
2168/* fetch new monotonic and realtime times from the kernel */
2169/* also detect if there was a timejump, and act accordingly */
2170inline_speed void
1819time_update (EV_P_ ev_tstamp max_block) 2171time_update (EV_P_ ev_tstamp max_block)
1820{ 2172{
1821 int i;
1822
1823#if EV_USE_MONOTONIC 2173#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic)) 2174 if (expect_true (have_monotonic))
1825 { 2175 {
2176 int i;
1826 ev_tstamp odiff = rtmn_diff; 2177 ev_tstamp odiff = rtmn_diff;
1827 2178
1828 mn_now = get_clock (); 2179 mn_now = get_clock ();
1829 2180
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2181 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1856 ev_rt_now = ev_time (); 2207 ev_rt_now = ev_time ();
1857 mn_now = get_clock (); 2208 mn_now = get_clock ();
1858 now_floor = mn_now; 2209 now_floor = mn_now;
1859 } 2210 }
1860 2211
2212 /* no timer adjustment, as the monotonic clock doesn't jump */
2213 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861# if EV_PERIODIC_ENABLE 2214# if EV_PERIODIC_ENABLE
1862 periodics_reschedule (EV_A); 2215 periodics_reschedule (EV_A);
1863# endif 2216# endif
1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866 } 2217 }
1867 else 2218 else
1868#endif 2219#endif
1869 { 2220 {
1870 ev_rt_now = ev_time (); 2221 ev_rt_now = ev_time ();
1871 2222
1872 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2223 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873 { 2224 {
2225 /* adjust timers. this is easy, as the offset is the same for all of them */
2226 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874#if EV_PERIODIC_ENABLE 2227#if EV_PERIODIC_ENABLE
1875 periodics_reschedule (EV_A); 2228 periodics_reschedule (EV_A);
1876#endif 2229#endif
1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1884 } 2230 }
1885 2231
1886 mn_now = ev_rt_now; 2232 mn_now = ev_rt_now;
1887 } 2233 }
1888} 2234}
1889 2235
1890void 2236void
1891ev_ref (EV_P)
1892{
1893 ++activecnt;
1894}
1895
1896void
1897ev_unref (EV_P)
1898{
1899 --activecnt;
1900}
1901
1902void
1903ev_now_update (EV_P)
1904{
1905 time_update (EV_A_ 1e100);
1906}
1907
1908static int loop_done;
1909
1910void
1911ev_loop (EV_P_ int flags) 2237ev_loop (EV_P_ int flags)
1912{ 2238{
2239#if EV_MINIMAL < 2
2240 ++loop_depth;
2241#endif
2242
2243 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2244
1913 loop_done = EVUNLOOP_CANCEL; 2245 loop_done = EVUNLOOP_CANCEL;
1914 2246
1915 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2247 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916 2248
1917 do 2249 do
1918 { 2250 {
1919#if EV_VERIFY >= 2 2251#if EV_VERIFY >= 2
1920 ev_loop_verify (EV_A); 2252 ev_loop_verify (EV_A);
… …
1933 /* we might have forked, so queue fork handlers */ 2265 /* we might have forked, so queue fork handlers */
1934 if (expect_false (postfork)) 2266 if (expect_false (postfork))
1935 if (forkcnt) 2267 if (forkcnt)
1936 { 2268 {
1937 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2269 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938 call_pending (EV_A); 2270 EV_INVOKE_PENDING;
1939 } 2271 }
1940#endif 2272#endif
1941 2273
1942 /* queue prepare watchers (and execute them) */ 2274 /* queue prepare watchers (and execute them) */
1943 if (expect_false (preparecnt)) 2275 if (expect_false (preparecnt))
1944 { 2276 {
1945 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2277 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946 call_pending (EV_A); 2278 EV_INVOKE_PENDING;
1947 } 2279 }
1948 2280
1949 if (expect_false (!activecnt)) 2281 if (expect_false (loop_done))
1950 break; 2282 break;
1951 2283
1952 /* we might have forked, so reify kernel state if necessary */ 2284 /* we might have forked, so reify kernel state if necessary */
1953 if (expect_false (postfork)) 2285 if (expect_false (postfork))
1954 loop_fork (EV_A); 2286 loop_fork (EV_A);
… …
1961 ev_tstamp waittime = 0.; 2293 ev_tstamp waittime = 0.;
1962 ev_tstamp sleeptime = 0.; 2294 ev_tstamp sleeptime = 0.;
1963 2295
1964 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2296 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1965 { 2297 {
2298 /* remember old timestamp for io_blocktime calculation */
2299 ev_tstamp prev_mn_now = mn_now;
2300
1966 /* update time to cancel out callback processing overhead */ 2301 /* update time to cancel out callback processing overhead */
1967 time_update (EV_A_ 1e100); 2302 time_update (EV_A_ 1e100);
1968 2303
1969 waittime = MAX_BLOCKTIME; 2304 waittime = MAX_BLOCKTIME;
1970 2305
… …
1980 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2315 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1981 if (waittime > to) waittime = to; 2316 if (waittime > to) waittime = to;
1982 } 2317 }
1983#endif 2318#endif
1984 2319
2320 /* don't let timeouts decrease the waittime below timeout_blocktime */
1985 if (expect_false (waittime < timeout_blocktime)) 2321 if (expect_false (waittime < timeout_blocktime))
1986 waittime = timeout_blocktime; 2322 waittime = timeout_blocktime;
1987 2323
1988 sleeptime = waittime - backend_fudge; 2324 /* extra check because io_blocktime is commonly 0 */
1989
1990 if (expect_true (sleeptime > io_blocktime)) 2325 if (expect_false (io_blocktime))
1991 sleeptime = io_blocktime;
1992
1993 if (sleeptime)
1994 { 2326 {
2327 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2328
2329 if (sleeptime > waittime - backend_fudge)
2330 sleeptime = waittime - backend_fudge;
2331
2332 if (expect_true (sleeptime > 0.))
2333 {
1995 ev_sleep (sleeptime); 2334 ev_sleep (sleeptime);
1996 waittime -= sleeptime; 2335 waittime -= sleeptime;
2336 }
1997 } 2337 }
1998 } 2338 }
1999 2339
2340#if EV_MINIMAL < 2
2000 ++loop_count; 2341 ++loop_count;
2342#endif
2343 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2001 backend_poll (EV_A_ waittime); 2344 backend_poll (EV_A_ waittime);
2345 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2002 2346
2003 /* update ev_rt_now, do magic */ 2347 /* update ev_rt_now, do magic */
2004 time_update (EV_A_ waittime + sleeptime); 2348 time_update (EV_A_ waittime + sleeptime);
2005 } 2349 }
2006 2350
… …
2017 2361
2018 /* queue check watchers, to be executed first */ 2362 /* queue check watchers, to be executed first */
2019 if (expect_false (checkcnt)) 2363 if (expect_false (checkcnt))
2020 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2364 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2021 2365
2022 call_pending (EV_A); 2366 EV_INVOKE_PENDING;
2023 } 2367 }
2024 while (expect_true ( 2368 while (expect_true (
2025 activecnt 2369 activecnt
2026 && !loop_done 2370 && !loop_done
2027 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2371 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2028 )); 2372 ));
2029 2373
2030 if (loop_done == EVUNLOOP_ONE) 2374 if (loop_done == EVUNLOOP_ONE)
2031 loop_done = EVUNLOOP_CANCEL; 2375 loop_done = EVUNLOOP_CANCEL;
2376
2377#if EV_MINIMAL < 2
2378 --loop_depth;
2379#endif
2032} 2380}
2033 2381
2034void 2382void
2035ev_unloop (EV_P_ int how) 2383ev_unloop (EV_P_ int how)
2036{ 2384{
2037 loop_done = how; 2385 loop_done = how;
2038} 2386}
2039 2387
2388void
2389ev_ref (EV_P)
2390{
2391 ++activecnt;
2392}
2393
2394void
2395ev_unref (EV_P)
2396{
2397 --activecnt;
2398}
2399
2400void
2401ev_now_update (EV_P)
2402{
2403 time_update (EV_A_ 1e100);
2404}
2405
2406void
2407ev_suspend (EV_P)
2408{
2409 ev_now_update (EV_A);
2410}
2411
2412void
2413ev_resume (EV_P)
2414{
2415 ev_tstamp mn_prev = mn_now;
2416
2417 ev_now_update (EV_A);
2418 timers_reschedule (EV_A_ mn_now - mn_prev);
2419#if EV_PERIODIC_ENABLE
2420 /* TODO: really do this? */
2421 periodics_reschedule (EV_A);
2422#endif
2423}
2424
2040/*****************************************************************************/ 2425/*****************************************************************************/
2426/* singly-linked list management, used when the expected list length is short */
2041 2427
2042void inline_size 2428inline_size void
2043wlist_add (WL *head, WL elem) 2429wlist_add (WL *head, WL elem)
2044{ 2430{
2045 elem->next = *head; 2431 elem->next = *head;
2046 *head = elem; 2432 *head = elem;
2047} 2433}
2048 2434
2049void inline_size 2435inline_size void
2050wlist_del (WL *head, WL elem) 2436wlist_del (WL *head, WL elem)
2051{ 2437{
2052 while (*head) 2438 while (*head)
2053 { 2439 {
2054 if (*head == elem) 2440 if (expect_true (*head == elem))
2055 { 2441 {
2056 *head = elem->next; 2442 *head = elem->next;
2057 return; 2443 break;
2058 } 2444 }
2059 2445
2060 head = &(*head)->next; 2446 head = &(*head)->next;
2061 } 2447 }
2062} 2448}
2063 2449
2064void inline_speed 2450/* internal, faster, version of ev_clear_pending */
2451inline_speed void
2065clear_pending (EV_P_ W w) 2452clear_pending (EV_P_ W w)
2066{ 2453{
2067 if (w->pending) 2454 if (w->pending)
2068 { 2455 {
2069 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2456 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070 w->pending = 0; 2457 w->pending = 0;
2071 } 2458 }
2072} 2459}
2073 2460
2074int 2461int
… …
2078 int pending = w_->pending; 2465 int pending = w_->pending;
2079 2466
2080 if (expect_true (pending)) 2467 if (expect_true (pending))
2081 { 2468 {
2082 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2469 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2470 p->w = (W)&pending_w;
2083 w_->pending = 0; 2471 w_->pending = 0;
2084 p->w = 0;
2085 return p->events; 2472 return p->events;
2086 } 2473 }
2087 else 2474 else
2088 return 0; 2475 return 0;
2089} 2476}
2090 2477
2091void inline_size 2478inline_size void
2092pri_adjust (EV_P_ W w) 2479pri_adjust (EV_P_ W w)
2093{ 2480{
2094 int pri = w->priority; 2481 int pri = ev_priority (w);
2095 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2482 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2483 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097 w->priority = pri; 2484 ev_set_priority (w, pri);
2098} 2485}
2099 2486
2100void inline_speed 2487inline_speed void
2101ev_start (EV_P_ W w, int active) 2488ev_start (EV_P_ W w, int active)
2102{ 2489{
2103 pri_adjust (EV_A_ w); 2490 pri_adjust (EV_A_ w);
2104 w->active = active; 2491 w->active = active;
2105 ev_ref (EV_A); 2492 ev_ref (EV_A);
2106} 2493}
2107 2494
2108void inline_size 2495inline_size void
2109ev_stop (EV_P_ W w) 2496ev_stop (EV_P_ W w)
2110{ 2497{
2111 ev_unref (EV_A); 2498 ev_unref (EV_A);
2112 w->active = 0; 2499 w->active = 0;
2113} 2500}
… …
2120 int fd = w->fd; 2507 int fd = w->fd;
2121 2508
2122 if (expect_false (ev_is_active (w))) 2509 if (expect_false (ev_is_active (w)))
2123 return; 2510 return;
2124 2511
2125 assert (("ev_io_start called with negative fd", fd >= 0)); 2512 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2513 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127 2514
2128 EV_FREQUENT_CHECK; 2515 EV_FREQUENT_CHECK;
2129 2516
2130 ev_start (EV_A_ (W)w, 1); 2517 ev_start (EV_A_ (W)w, 1);
2131 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132 wlist_add (&anfds[fd].head, (WL)w); 2519 wlist_add (&anfds[fd].head, (WL)w);
2133 2520
2134 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2521 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135 w->events &= ~EV_IOFDSET; 2522 w->events &= ~EV__IOFDSET;
2136 2523
2137 EV_FREQUENT_CHECK; 2524 EV_FREQUENT_CHECK;
2138} 2525}
2139 2526
2140void noinline 2527void noinline
… …
2142{ 2529{
2143 clear_pending (EV_A_ (W)w); 2530 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2531 if (expect_false (!ev_is_active (w)))
2145 return; 2532 return;
2146 2533
2147 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2534 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148 2535
2149 EV_FREQUENT_CHECK; 2536 EV_FREQUENT_CHECK;
2150 2537
2151 wlist_del (&anfds[w->fd].head, (WL)w); 2538 wlist_del (&anfds[w->fd].head, (WL)w);
2152 ev_stop (EV_A_ (W)w); 2539 ev_stop (EV_A_ (W)w);
… …
2162 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
2163 return; 2550 return;
2164 2551
2165 ev_at (w) += mn_now; 2552 ev_at (w) += mn_now;
2166 2553
2167 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2554 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168 2555
2169 EV_FREQUENT_CHECK; 2556 EV_FREQUENT_CHECK;
2170 2557
2171 ++timercnt; 2558 ++timercnt;
2172 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2559 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2175 ANHE_at_cache (timers [ev_active (w)]); 2562 ANHE_at_cache (timers [ev_active (w)]);
2176 upheap (timers, ev_active (w)); 2563 upheap (timers, ev_active (w));
2177 2564
2178 EV_FREQUENT_CHECK; 2565 EV_FREQUENT_CHECK;
2179 2566
2180 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2567 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181} 2568}
2182 2569
2183void noinline 2570void noinline
2184ev_timer_stop (EV_P_ ev_timer *w) 2571ev_timer_stop (EV_P_ ev_timer *w)
2185{ 2572{
… …
2190 EV_FREQUENT_CHECK; 2577 EV_FREQUENT_CHECK;
2191 2578
2192 { 2579 {
2193 int active = ev_active (w); 2580 int active = ev_active (w);
2194 2581
2195 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2582 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196 2583
2197 --timercnt; 2584 --timercnt;
2198 2585
2199 if (expect_true (active < timercnt + HEAP0)) 2586 if (expect_true (active < timercnt + HEAP0))
2200 { 2587 {
2201 timers [active] = timers [timercnt + HEAP0]; 2588 timers [active] = timers [timercnt + HEAP0];
2202 adjustheap (timers, timercnt, active); 2589 adjustheap (timers, timercnt, active);
2203 } 2590 }
2204 } 2591 }
2205 2592
2206 EV_FREQUENT_CHECK;
2207
2208 ev_at (w) -= mn_now; 2593 ev_at (w) -= mn_now;
2209 2594
2210 ev_stop (EV_A_ (W)w); 2595 ev_stop (EV_A_ (W)w);
2596
2597 EV_FREQUENT_CHECK;
2211} 2598}
2212 2599
2213void noinline 2600void noinline
2214ev_timer_again (EV_P_ ev_timer *w) 2601ev_timer_again (EV_P_ ev_timer *w)
2215{ 2602{
… …
2233 } 2620 }
2234 2621
2235 EV_FREQUENT_CHECK; 2622 EV_FREQUENT_CHECK;
2236} 2623}
2237 2624
2625ev_tstamp
2626ev_timer_remaining (EV_P_ ev_timer *w)
2627{
2628 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2629}
2630
2238#if EV_PERIODIC_ENABLE 2631#if EV_PERIODIC_ENABLE
2239void noinline 2632void noinline
2240ev_periodic_start (EV_P_ ev_periodic *w) 2633ev_periodic_start (EV_P_ ev_periodic *w)
2241{ 2634{
2242 if (expect_false (ev_is_active (w))) 2635 if (expect_false (ev_is_active (w)))
… …
2244 2637
2245 if (w->reschedule_cb) 2638 if (w->reschedule_cb)
2246 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2639 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247 else if (w->interval) 2640 else if (w->interval)
2248 { 2641 {
2249 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2642 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250 /* this formula differs from the one in periodic_reify because we do not always round up */ 2643 /* this formula differs from the one in periodic_reify because we do not always round up */
2251 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252 } 2645 }
2253 else 2646 else
2254 ev_at (w) = w->offset; 2647 ev_at (w) = w->offset;
… …
2262 ANHE_at_cache (periodics [ev_active (w)]); 2655 ANHE_at_cache (periodics [ev_active (w)]);
2263 upheap (periodics, ev_active (w)); 2656 upheap (periodics, ev_active (w));
2264 2657
2265 EV_FREQUENT_CHECK; 2658 EV_FREQUENT_CHECK;
2266 2659
2267 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2660 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268} 2661}
2269 2662
2270void noinline 2663void noinline
2271ev_periodic_stop (EV_P_ ev_periodic *w) 2664ev_periodic_stop (EV_P_ ev_periodic *w)
2272{ 2665{
… …
2277 EV_FREQUENT_CHECK; 2670 EV_FREQUENT_CHECK;
2278 2671
2279 { 2672 {
2280 int active = ev_active (w); 2673 int active = ev_active (w);
2281 2674
2282 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2675 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283 2676
2284 --periodiccnt; 2677 --periodiccnt;
2285 2678
2286 if (expect_true (active < periodiccnt + HEAP0)) 2679 if (expect_true (active < periodiccnt + HEAP0))
2287 { 2680 {
2288 periodics [active] = periodics [periodiccnt + HEAP0]; 2681 periodics [active] = periodics [periodiccnt + HEAP0];
2289 adjustheap (periodics, periodiccnt, active); 2682 adjustheap (periodics, periodiccnt, active);
2290 } 2683 }
2291 } 2684 }
2292 2685
2293 EV_FREQUENT_CHECK;
2294
2295 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2296} 2689}
2297 2690
2298void noinline 2691void noinline
2299ev_periodic_again (EV_P_ ev_periodic *w) 2692ev_periodic_again (EV_P_ ev_periodic *w)
2300{ 2693{
… …
2309#endif 2702#endif
2310 2703
2311void noinline 2704void noinline
2312ev_signal_start (EV_P_ ev_signal *w) 2705ev_signal_start (EV_P_ ev_signal *w)
2313{ 2706{
2314#if EV_MULTIPLICITY
2315 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif
2317 if (expect_false (ev_is_active (w))) 2707 if (expect_false (ev_is_active (w)))
2318 return; 2708 return;
2319 2709
2320 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2710 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321 2711
2322 evpipe_init (EV_A); 2712#if EV_MULTIPLICITY
2713 assert (("libev: a signal must not be attached to two different loops",
2714 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323 2715
2324 EV_FREQUENT_CHECK; 2716 signals [w->signum - 1].loop = EV_A;
2717#endif
2325 2718
2719 EV_FREQUENT_CHECK;
2720
2721#if EV_USE_SIGNALFD
2722 if (sigfd == -2)
2326 { 2723 {
2327#ifndef _WIN32 2724 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328 sigset_t full, prev; 2725 if (sigfd < 0 && errno == EINVAL)
2329 sigfillset (&full); 2726 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330 sigprocmask (SIG_SETMASK, &full, &prev);
2331#endif
2332 2727
2333 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2728 if (sigfd >= 0)
2729 {
2730 fd_intern (sigfd); /* doing it twice will not hurt */
2334 2731
2335#ifndef _WIN32 2732 sigemptyset (&sigfd_set);
2336 sigprocmask (SIG_SETMASK, &prev, 0); 2733
2337#endif 2734 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2735 ev_set_priority (&sigfd_w, EV_MAXPRI);
2736 ev_io_start (EV_A_ &sigfd_w);
2737 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2738 }
2338 } 2739 }
2740
2741 if (sigfd >= 0)
2742 {
2743 /* TODO: check .head */
2744 sigaddset (&sigfd_set, w->signum);
2745 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2746
2747 signalfd (sigfd, &sigfd_set, 0);
2748 }
2749#endif
2339 2750
2340 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2341 wlist_add (&signals [w->signum - 1].head, (WL)w); 2752 wlist_add (&signals [w->signum - 1].head, (WL)w);
2342 2753
2343 if (!((WL)w)->next) 2754 if (!((WL)w)->next)
2755# if EV_USE_SIGNALFD
2756 if (sigfd < 0) /*TODO*/
2757# endif
2344 { 2758 {
2345#if _WIN32 2759# ifdef _WIN32
2760 evpipe_init (EV_A);
2761
2346 signal (w->signum, ev_sighandler); 2762 signal (w->signum, ev_sighandler);
2347#else 2763# else
2348 struct sigaction sa; 2764 struct sigaction sa;
2765
2766 evpipe_init (EV_A);
2767
2349 sa.sa_handler = ev_sighandler; 2768 sa.sa_handler = ev_sighandler;
2350 sigfillset (&sa.sa_mask); 2769 sigfillset (&sa.sa_mask);
2351 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2770 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352 sigaction (w->signum, &sa, 0); 2771 sigaction (w->signum, &sa, 0);
2772
2773 sigemptyset (&sa.sa_mask);
2774 sigaddset (&sa.sa_mask, w->signum);
2775 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2353#endif 2776#endif
2354 } 2777 }
2355 2778
2356 EV_FREQUENT_CHECK; 2779 EV_FREQUENT_CHECK;
2357} 2780}
2358 2781
2359void noinline 2782void noinline
… …
2367 2790
2368 wlist_del (&signals [w->signum - 1].head, (WL)w); 2791 wlist_del (&signals [w->signum - 1].head, (WL)w);
2369 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2370 2793
2371 if (!signals [w->signum - 1].head) 2794 if (!signals [w->signum - 1].head)
2795 {
2796#if EV_MULTIPLICITY
2797 signals [w->signum - 1].loop = 0; /* unattach from signal */
2798#endif
2799#if EV_USE_SIGNALFD
2800 if (sigfd >= 0)
2801 {
2802 sigset_t ss;
2803
2804 sigemptyset (&ss);
2805 sigaddset (&ss, w->signum);
2806 sigdelset (&sigfd_set, w->signum);
2807
2808 signalfd (sigfd, &sigfd_set, 0);
2809 sigprocmask (SIG_UNBLOCK, &ss, 0);
2810 }
2811 else
2812#endif
2372 signal (w->signum, SIG_DFL); 2813 signal (w->signum, SIG_DFL);
2814 }
2373 2815
2374 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
2375} 2817}
2376 2818
2377void 2819void
2378ev_child_start (EV_P_ ev_child *w) 2820ev_child_start (EV_P_ ev_child *w)
2379{ 2821{
2380#if EV_MULTIPLICITY 2822#if EV_MULTIPLICITY
2381 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2823 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382#endif 2824#endif
2383 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
2384 return; 2826 return;
2385 2827
2386 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
… …
2411# ifdef _WIN32 2853# ifdef _WIN32
2412# undef lstat 2854# undef lstat
2413# define lstat(a,b) _stati64 (a,b) 2855# define lstat(a,b) _stati64 (a,b)
2414# endif 2856# endif
2415 2857
2416#define DEF_STAT_INTERVAL 5.0074891 2858#define DEF_STAT_INTERVAL 5.0074891
2859#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417#define MIN_STAT_INTERVAL 0.1074891 2860#define MIN_STAT_INTERVAL 0.1074891
2418 2861
2419static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2862static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420 2863
2421#if EV_USE_INOTIFY 2864#if EV_USE_INOTIFY
2422# define EV_INOTIFY_BUFSIZE 8192 2865
2866/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2867# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2423 2868
2424static void noinline 2869static void noinline
2425infy_add (EV_P_ ev_stat *w) 2870infy_add (EV_P_ ev_stat *w)
2426{ 2871{
2427 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); 2872 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);
2428 2873
2429 if (w->wd < 0) 2874 if (w->wd >= 0)
2875 {
2876 struct statfs sfs;
2877
2878 /* now local changes will be tracked by inotify, but remote changes won't */
2879 /* unless the filesystem is known to be local, we therefore still poll */
2880 /* also do poll on <2.6.25, but with normal frequency */
2881
2882 if (!fs_2625)
2883 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2884 else if (!statfs (w->path, &sfs)
2885 && (sfs.f_type == 0x1373 /* devfs */
2886 || sfs.f_type == 0xEF53 /* ext2/3 */
2887 || sfs.f_type == 0x3153464a /* jfs */
2888 || sfs.f_type == 0x52654973 /* reiser3 */
2889 || sfs.f_type == 0x01021994 /* tempfs */
2890 || sfs.f_type == 0x58465342 /* xfs */))
2891 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2892 else
2893 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2430 { 2894 }
2431 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2895 else
2896 {
2897 /* can't use inotify, continue to stat */
2898 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432 2899
2433 /* monitor some parent directory for speedup hints */ 2900 /* if path is not there, monitor some parent directory for speedup hints */
2434 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2901 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2435 /* but an efficiency issue only */ 2902 /* but an efficiency issue only */
2436 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2903 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437 { 2904 {
2438 char path [4096]; 2905 char path [4096];
2439 strcpy (path, w->path); 2906 strcpy (path, w->path);
… …
2443 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2910 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2911 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445 2912
2446 char *pend = strrchr (path, '/'); 2913 char *pend = strrchr (path, '/');
2447 2914
2448 if (!pend) 2915 if (!pend || pend == path)
2449 break; /* whoops, no '/', complain to your admin */ 2916 break;
2450 2917
2451 *pend = 0; 2918 *pend = 0;
2452 w->wd = inotify_add_watch (fs_fd, path, mask); 2919 w->wd = inotify_add_watch (fs_fd, path, mask);
2453 } 2920 }
2454 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455 } 2922 }
2456 } 2923 }
2457 else
2458 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459 2924
2460 if (w->wd >= 0) 2925 if (w->wd >= 0)
2461 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2926 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2927
2928 /* now re-arm timer, if required */
2929 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2930 ev_timer_again (EV_A_ &w->timer);
2931 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2462} 2932}
2463 2933
2464static void noinline 2934static void noinline
2465infy_del (EV_P_ ev_stat *w) 2935infy_del (EV_P_ ev_stat *w)
2466{ 2936{
… …
2496 2966
2497 if (w->wd == wd || wd == -1) 2967 if (w->wd == wd || wd == -1)
2498 { 2968 {
2499 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2969 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500 { 2970 {
2971 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2501 w->wd = -1; 2972 w->wd = -1;
2502 infy_add (EV_A_ w); /* re-add, no matter what */ 2973 infy_add (EV_A_ w); /* re-add, no matter what */
2503 } 2974 }
2504 2975
2505 stat_timer_cb (EV_A_ &w->timer, 0); 2976 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2510 2981
2511static void 2982static void
2512infy_cb (EV_P_ ev_io *w, int revents) 2983infy_cb (EV_P_ ev_io *w, int revents)
2513{ 2984{
2514 char buf [EV_INOTIFY_BUFSIZE]; 2985 char buf [EV_INOTIFY_BUFSIZE];
2515 struct inotify_event *ev = (struct inotify_event *)buf;
2516 int ofs; 2986 int ofs;
2517 int len = read (fs_fd, buf, sizeof (buf)); 2987 int len = read (fs_fd, buf, sizeof (buf));
2518 2988
2519 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2989 for (ofs = 0; ofs < len; )
2990 {
2991 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2520 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2992 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2993 ofs += sizeof (struct inotify_event) + ev->len;
2994 }
2521} 2995}
2522 2996
2523void inline_size 2997inline_size void
2524infy_init (EV_P) 2998check_2625 (EV_P)
2525{ 2999{
2526 if (fs_fd != -2)
2527 return;
2528
2529 /* kernels < 2.6.25 are borked 3000 /* kernels < 2.6.25 are borked
2530 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3001 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531 */ 3002 */
2532 {
2533 struct utsname buf; 3003 struct utsname buf;
2534 int major, minor, micro; 3004 int major, minor, micro;
2535 3005
2536 fs_fd = -1;
2537
2538 if (uname (&buf)) 3006 if (uname (&buf))
2539 return; 3007 return;
2540 3008
2541 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3) 3009 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542 return; 3010 return;
2543 3011
2544 if (major < 2 3012 if (major < 2
2545 || (major == 2 && minor < 6) 3013 || (major == 2 && minor < 6)
2546 || (major == 2 && minor == 6 && micro < 25)) 3014 || (major == 2 && minor == 6 && micro < 25))
2547 return; 3015 return;
2548 }
2549 3016
3017 fs_2625 = 1;
3018}
3019
3020inline_size int
3021infy_newfd (void)
3022{
3023#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3024 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3025 if (fd >= 0)
3026 return fd;
3027#endif
3028 return inotify_init ();
3029}
3030
3031inline_size void
3032infy_init (EV_P)
3033{
3034 if (fs_fd != -2)
3035 return;
3036
3037 fs_fd = -1;
3038
3039 check_2625 (EV_A);
3040
2550 fs_fd = inotify_init (); 3041 fs_fd = infy_newfd ();
2551 3042
2552 if (fs_fd >= 0) 3043 if (fs_fd >= 0)
2553 { 3044 {
3045 fd_intern (fs_fd);
2554 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3046 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2555 ev_set_priority (&fs_w, EV_MAXPRI); 3047 ev_set_priority (&fs_w, EV_MAXPRI);
2556 ev_io_start (EV_A_ &fs_w); 3048 ev_io_start (EV_A_ &fs_w);
3049 ev_unref (EV_A);
2557 } 3050 }
2558} 3051}
2559 3052
2560void inline_size 3053inline_size void
2561infy_fork (EV_P) 3054infy_fork (EV_P)
2562{ 3055{
2563 int slot; 3056 int slot;
2564 3057
2565 if (fs_fd < 0) 3058 if (fs_fd < 0)
2566 return; 3059 return;
2567 3060
3061 ev_ref (EV_A);
3062 ev_io_stop (EV_A_ &fs_w);
2568 close (fs_fd); 3063 close (fs_fd);
2569 fs_fd = inotify_init (); 3064 fs_fd = infy_newfd ();
3065
3066 if (fs_fd >= 0)
3067 {
3068 fd_intern (fs_fd);
3069 ev_io_set (&fs_w, fs_fd, EV_READ);
3070 ev_io_start (EV_A_ &fs_w);
3071 ev_unref (EV_A);
3072 }
2570 3073
2571 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2572 { 3075 {
2573 WL w_ = fs_hash [slot].head; 3076 WL w_ = fs_hash [slot].head;
2574 fs_hash [slot].head = 0; 3077 fs_hash [slot].head = 0;
… …
2581 w->wd = -1; 3084 w->wd = -1;
2582 3085
2583 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
2584 infy_add (EV_A_ w); /* re-add, no matter what */ 3087 infy_add (EV_A_ w); /* re-add, no matter what */
2585 else 3088 else
3089 {
3090 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3091 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2586 ev_timer_start (EV_A_ &w->timer); 3092 ev_timer_again (EV_A_ &w->timer);
3093 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3094 }
2587 } 3095 }
2588 } 3096 }
2589} 3097}
2590 3098
2591#endif 3099#endif
… …
2608static void noinline 3116static void noinline
2609stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3117stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2610{ 3118{
2611 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3119 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2612 3120
2613 /* we copy this here each the time so that */ 3121 ev_statdata prev = w->attr;
2614 /* prev has the old value when the callback gets invoked */
2615 w->prev = w->attr;
2616 ev_stat_stat (EV_A_ w); 3122 ev_stat_stat (EV_A_ w);
2617 3123
2618 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3124 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2619 if ( 3125 if (
2620 w->prev.st_dev != w->attr.st_dev 3126 prev.st_dev != w->attr.st_dev
2621 || w->prev.st_ino != w->attr.st_ino 3127 || prev.st_ino != w->attr.st_ino
2622 || w->prev.st_mode != w->attr.st_mode 3128 || prev.st_mode != w->attr.st_mode
2623 || w->prev.st_nlink != w->attr.st_nlink 3129 || prev.st_nlink != w->attr.st_nlink
2624 || w->prev.st_uid != w->attr.st_uid 3130 || prev.st_uid != w->attr.st_uid
2625 || w->prev.st_gid != w->attr.st_gid 3131 || prev.st_gid != w->attr.st_gid
2626 || w->prev.st_rdev != w->attr.st_rdev 3132 || prev.st_rdev != w->attr.st_rdev
2627 || w->prev.st_size != w->attr.st_size 3133 || prev.st_size != w->attr.st_size
2628 || w->prev.st_atime != w->attr.st_atime 3134 || prev.st_atime != w->attr.st_atime
2629 || w->prev.st_mtime != w->attr.st_mtime 3135 || prev.st_mtime != w->attr.st_mtime
2630 || w->prev.st_ctime != w->attr.st_ctime 3136 || prev.st_ctime != w->attr.st_ctime
2631 ) { 3137 ) {
3138 /* we only update w->prev on actual differences */
3139 /* in case we test more often than invoke the callback, */
3140 /* to ensure that prev is always different to attr */
3141 w->prev = prev;
3142
2632 #if EV_USE_INOTIFY 3143 #if EV_USE_INOTIFY
2633 if (fs_fd >= 0) 3144 if (fs_fd >= 0)
2634 { 3145 {
2635 infy_del (EV_A_ w); 3146 infy_del (EV_A_ w);
2636 infy_add (EV_A_ w); 3147 infy_add (EV_A_ w);
… …
2646ev_stat_start (EV_P_ ev_stat *w) 3157ev_stat_start (EV_P_ ev_stat *w)
2647{ 3158{
2648 if (expect_false (ev_is_active (w))) 3159 if (expect_false (ev_is_active (w)))
2649 return; 3160 return;
2650 3161
2651 /* since we use memcmp, we need to clear any padding data etc. */
2652 memset (&w->prev, 0, sizeof (ev_statdata));
2653 memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655 ev_stat_stat (EV_A_ w); 3162 ev_stat_stat (EV_A_ w);
2656 3163
3164 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657 if (w->interval < MIN_STAT_INTERVAL) 3165 w->interval = MIN_STAT_INTERVAL;
2658 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659 3166
2660 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3167 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661 ev_set_priority (&w->timer, ev_priority (w)); 3168 ev_set_priority (&w->timer, ev_priority (w));
2662 3169
2663#if EV_USE_INOTIFY 3170#if EV_USE_INOTIFY
2664 infy_init (EV_A); 3171 infy_init (EV_A);
2665 3172
2666 if (fs_fd >= 0) 3173 if (fs_fd >= 0)
2667 infy_add (EV_A_ w); 3174 infy_add (EV_A_ w);
2668 else 3175 else
2669#endif 3176#endif
3177 {
2670 ev_timer_start (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 ev_unref (EV_A);
3180 }
2671 3181
2672 ev_start (EV_A_ (W)w, 1); 3182 ev_start (EV_A_ (W)w, 1);
2673 3183
2674 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2675} 3185}
… …
2684 EV_FREQUENT_CHECK; 3194 EV_FREQUENT_CHECK;
2685 3195
2686#if EV_USE_INOTIFY 3196#if EV_USE_INOTIFY
2687 infy_del (EV_A_ w); 3197 infy_del (EV_A_ w);
2688#endif 3198#endif
3199
3200 if (ev_is_active (&w->timer))
3201 {
3202 ev_ref (EV_A);
2689 ev_timer_stop (EV_A_ &w->timer); 3203 ev_timer_stop (EV_A_ &w->timer);
3204 }
2690 3205
2691 ev_stop (EV_A_ (W)w); 3206 ev_stop (EV_A_ (W)w);
2692 3207
2693 EV_FREQUENT_CHECK; 3208 EV_FREQUENT_CHECK;
2694} 3209}
… …
2835embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836{ 3351{
2837 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3352 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838 3353
2839 { 3354 {
2840 struct ev_loop *loop = w->other; 3355 EV_P = w->other;
2841 3356
2842 while (fdchangecnt) 3357 while (fdchangecnt)
2843 { 3358 {
2844 fd_reify (EV_A); 3359 fd_reify (EV_A);
2845 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3360 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2850static void 3365static void
2851embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3366embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852{ 3367{
2853 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3368 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854 3369
3370 ev_embed_stop (EV_A_ w);
3371
2855 { 3372 {
2856 struct ev_loop *loop = w->other; 3373 EV_P = w->other;
2857 3374
2858 ev_loop_fork (EV_A); 3375 ev_loop_fork (EV_A);
3376 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2859 } 3377 }
3378
3379 ev_embed_start (EV_A_ w);
2860} 3380}
2861 3381
2862#if 0 3382#if 0
2863static void 3383static void
2864embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3384embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2872{ 3392{
2873 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
2874 return; 3394 return;
2875 3395
2876 { 3396 {
2877 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
2878 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3398 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3399 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880 } 3400 }
2881 3401
2882 EV_FREQUENT_CHECK; 3402 EV_FREQUENT_CHECK;
2883 3403
… …
2909 3429
2910 ev_io_stop (EV_A_ &w->io); 3430 ev_io_stop (EV_A_ &w->io);
2911 ev_prepare_stop (EV_A_ &w->prepare); 3431 ev_prepare_stop (EV_A_ &w->prepare);
2912 ev_fork_stop (EV_A_ &w->fork); 3432 ev_fork_stop (EV_A_ &w->fork);
2913 3433
3434 ev_stop (EV_A_ (W)w);
3435
2914 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
2915} 3437}
2916#endif 3438#endif
2917 3439
2918#if EV_FORK_ENABLE 3440#if EV_FORK_ENABLE
… …
2994 3516
2995void 3517void
2996ev_async_send (EV_P_ ev_async *w) 3518ev_async_send (EV_P_ ev_async *w)
2997{ 3519{
2998 w->sent = 1; 3520 w->sent = 1;
2999 evpipe_write (EV_A_ &gotasync); 3521 evpipe_write (EV_A_ &async_pending);
3000} 3522}
3001#endif 3523#endif
3002 3524
3003/*****************************************************************************/ 3525/*****************************************************************************/
3004 3526
… …
3066 ev_timer_set (&once->to, timeout, 0.); 3588 ev_timer_set (&once->to, timeout, 0.);
3067 ev_timer_start (EV_A_ &once->to); 3589 ev_timer_start (EV_A_ &once->to);
3068 } 3590 }
3069} 3591}
3070 3592
3593/*****************************************************************************/
3594
3595#if EV_WALK_ENABLE
3596void
3597ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3598{
3599 int i, j;
3600 ev_watcher_list *wl, *wn;
3601
3602 if (types & (EV_IO | EV_EMBED))
3603 for (i = 0; i < anfdmax; ++i)
3604 for (wl = anfds [i].head; wl; )
3605 {
3606 wn = wl->next;
3607
3608#if EV_EMBED_ENABLE
3609 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3610 {
3611 if (types & EV_EMBED)
3612 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3613 }
3614 else
3615#endif
3616#if EV_USE_INOTIFY
3617 if (ev_cb ((ev_io *)wl) == infy_cb)
3618 ;
3619 else
3620#endif
3621 if ((ev_io *)wl != &pipe_w)
3622 if (types & EV_IO)
3623 cb (EV_A_ EV_IO, wl);
3624
3625 wl = wn;
3626 }
3627
3628 if (types & (EV_TIMER | EV_STAT))
3629 for (i = timercnt + HEAP0; i-- > HEAP0; )
3630#if EV_STAT_ENABLE
3631 /*TODO: timer is not always active*/
3632 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3633 {
3634 if (types & EV_STAT)
3635 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3636 }
3637 else
3638#endif
3639 if (types & EV_TIMER)
3640 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3641
3642#if EV_PERIODIC_ENABLE
3643 if (types & EV_PERIODIC)
3644 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3645 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3646#endif
3647
3648#if EV_IDLE_ENABLE
3649 if (types & EV_IDLE)
3650 for (j = NUMPRI; i--; )
3651 for (i = idlecnt [j]; i--; )
3652 cb (EV_A_ EV_IDLE, idles [j][i]);
3653#endif
3654
3655#if EV_FORK_ENABLE
3656 if (types & EV_FORK)
3657 for (i = forkcnt; i--; )
3658 if (ev_cb (forks [i]) != embed_fork_cb)
3659 cb (EV_A_ EV_FORK, forks [i]);
3660#endif
3661
3662#if EV_ASYNC_ENABLE
3663 if (types & EV_ASYNC)
3664 for (i = asynccnt; i--; )
3665 cb (EV_A_ EV_ASYNC, asyncs [i]);
3666#endif
3667
3668 if (types & EV_PREPARE)
3669 for (i = preparecnt; i--; )
3670#if EV_EMBED_ENABLE
3671 if (ev_cb (prepares [i]) != embed_prepare_cb)
3672#endif
3673 cb (EV_A_ EV_PREPARE, prepares [i]);
3674
3675 if (types & EV_CHECK)
3676 for (i = checkcnt; i--; )
3677 cb (EV_A_ EV_CHECK, checks [i]);
3678
3679 if (types & EV_SIGNAL)
3680 for (i = 0; i < EV_NSIG - 1; ++i)
3681 for (wl = signals [i].head; wl; )
3682 {
3683 wn = wl->next;
3684 cb (EV_A_ EV_SIGNAL, wl);
3685 wl = wn;
3686 }
3687
3688 if (types & EV_CHILD)
3689 for (i = EV_PID_HASHSIZE; i--; )
3690 for (wl = childs [i]; wl; )
3691 {
3692 wn = wl->next;
3693 cb (EV_A_ EV_CHILD, wl);
3694 wl = wn;
3695 }
3696/* EV_STAT 0x00001000 /* stat data changed */
3697/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3698}
3699#endif
3700
3071#if EV_MULTIPLICITY 3701#if EV_MULTIPLICITY
3072 #include "ev_wrap.h" 3702 #include "ev_wrap.h"
3073#endif 3703#endif
3074 3704
3075#ifdef __cplusplus 3705#ifdef __cplusplus

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