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Comparing libev/ev.c (file contents):
Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC vs.
Revision 1.322 by root, Thu Jan 7 06:49:31 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 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
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
… …
154#ifndef _WIN32 177#ifndef _WIN32
155# include <sys/time.h> 178# include <sys/time.h>
156# include <sys/wait.h> 179# include <sys/wait.h>
157# include <unistd.h> 180# include <unistd.h>
158#else 181#else
182# include <io.h>
159# define WIN32_LEAN_AND_MEAN 183# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 184# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 185# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 186# define EV_SELECT_IS_WINSOCKET 1
163# endif 187# endif
164#endif 188#endif
165 189
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 190/* this block tries to deduce configuration from header-defined symbols and defaults */
167 191
192/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG)
194/* use what's provided */
195#elif defined (NSIG)
196# define EV_NSIG (NSIG)
197#elif defined(_NSIG)
198# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX)
200# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX)
202# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX)
204# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else
214# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */
216# define EV_NSIG 65
217#endif
218
219#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1
222# else
223# define EV_USE_CLOCK_SYSCALL 0
224# endif
225#endif
226
168#ifndef EV_USE_MONOTONIC 227#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1
230# else
169# define EV_USE_MONOTONIC 0 231# define EV_USE_MONOTONIC 0
232# endif
170#endif 233#endif
171 234
172#ifndef EV_USE_REALTIME 235#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 237#endif
175 238
176#ifndef EV_USE_NANOSLEEP 239#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1
242# else
177# define EV_USE_NANOSLEEP 0 243# define EV_USE_NANOSLEEP 0
244# endif
178#endif 245#endif
179 246
180#ifndef EV_USE_SELECT 247#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 248# define EV_USE_SELECT 1
182#endif 249#endif
… …
235# else 302# else
236# define EV_USE_EVENTFD 0 303# define EV_USE_EVENTFD 0
237# endif 304# endif
238#endif 305#endif
239 306
307#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1
310# else
311# define EV_USE_SIGNALFD 0
312# endif
313#endif
314
315#if 0 /* debugging */
316# define EV_VERIFY 3
317# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1
319#endif
320
321#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL
323#endif
324
325#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL
327#endif
328
329#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL
331#endif
332
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h>
337# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1
341# else
342# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0
344# endif
345#endif
346
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 347/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 348
242#ifndef CLOCK_MONOTONIC 349#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 350# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 351# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 366# include <sys/select.h>
260# endif 367# endif
261#endif 368#endif
262 369
263#if EV_USE_INOTIFY 370#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h>
264# include <sys/inotify.h> 373# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0
378# endif
265#endif 379#endif
266 380
267#if EV_SELECT_IS_WINSOCKET 381#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 382# include <winsock.h>
269#endif 383#endif
270 384
271#if EV_USE_EVENTFD 385#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 387# include <stdint.h>
388# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK
390# endif
391# ifndef EFD_CLOEXEC
392# ifdef O_CLOEXEC
393# define EFD_CLOEXEC O_CLOEXEC
394# else
395# define EFD_CLOEXEC 02000000
396# endif
397# endif
274# ifdef __cplusplus 398# ifdef __cplusplus
275extern "C" { 399extern "C" {
276# endif 400# endif
277int eventfd (unsigned int initval, int flags); 401int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus 402# ifdef __cplusplus
279} 403}
280# endif 404# endif
281#endif 405#endif
282 406
407#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
409# include <stdint.h>
410# ifndef SFD_NONBLOCK
411# define SFD_NONBLOCK O_NONBLOCK
412# endif
413# ifndef SFD_CLOEXEC
414# ifdef O_CLOEXEC
415# define SFD_CLOEXEC O_CLOEXEC
416# else
417# define SFD_CLOEXEC 02000000
418# endif
419# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags);
424
425struct signalfd_siginfo
426{
427 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)];
429};
430# ifdef __cplusplus
431}
432# endif
433#endif
434
435
283/**/ 436/**/
437
438#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
440#else
441# define EV_FREQUENT_CHECK do { } while (0)
442#endif
284 443
285/* 444/*
286 * This is used to avoid floating point rounding problems. 445 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 446 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 447 * to ensure progress, time-wise, even when rounding
… …
292 */ 451 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 453
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 456
299#if __GNUC__ >= 4 457#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 458# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 459# define noinline __attribute__ ((noinline))
302#else 460#else
… …
315# define inline_speed static noinline 473# define inline_speed static noinline
316#else 474#else
317# define inline_speed static inline 475# define inline_speed static inline
318#endif 476#endif
319 477
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479
480#if EV_MINPRI == EV_MAXPRI
481# define ABSPRI(w) (((W)w), 0)
482#else
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 483# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
484#endif
322 485
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 486#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 487#define EMPTY2(a,b) /* used to suppress some warnings */
325 488
326typedef ev_watcher *W; 489typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 491typedef ev_watcher_time *WT;
329 492
330#define ev_active(w) ((W)(w))->active 493#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 494#define ev_at(w) ((WT)(w))->at
332 495
333#if EV_USE_MONOTONIC 496#if EV_USE_REALTIME
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 497/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */ 498/* giving it a reasonably high chance of working on typical architetcures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif
501
502#if EV_USE_MONOTONIC
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
504#endif
505
506#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif
509#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif
512#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd)
337#endif 514#endif
338 515
339#ifdef _WIN32 516#ifdef _WIN32
340# include "ev_win32.c" 517# include "ev_win32.c"
341#endif 518#endif
… …
349{ 526{
350 syserr_cb = cb; 527 syserr_cb = cb;
351} 528}
352 529
353static void noinline 530static void noinline
354syserr (const char *msg) 531ev_syserr (const char *msg)
355{ 532{
356 if (!msg) 533 if (!msg)
357 msg = "(libev) system error"; 534 msg = "(libev) system error";
358 535
359 if (syserr_cb) 536 if (syserr_cb)
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 582#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 583#define ev_free(ptr) ev_realloc ((ptr), 0)
407 584
408/*****************************************************************************/ 585/*****************************************************************************/
409 586
587/* set in reify when reification needed */
588#define EV_ANFD_REIFY 1
589
590/* file descriptor info structure */
410typedef struct 591typedef struct
411{ 592{
412 WL head; 593 WL head;
413 unsigned char events; 594 unsigned char events; /* the events watched for */
595 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 597 unsigned char unused;
598#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif
415#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 602 SOCKET handle;
417#endif 603#endif
418} ANFD; 604} ANFD;
419 605
606/* stores the pending event set for a given watcher */
420typedef struct 607typedef struct
421{ 608{
422 W w; 609 W w;
423 int events; 610 int events; /* the pending event set for the given watcher */
424} ANPENDING; 611} ANPENDING;
425 612
426#if EV_USE_INOTIFY 613#if EV_USE_INOTIFY
614/* hash table entry per inotify-id */
427typedef struct 615typedef struct
428{ 616{
429 WL head; 617 WL head;
430} ANFS; 618} ANFS;
619#endif
620
621/* Heap Entry */
622#if EV_HEAP_CACHE_AT
623 /* a heap element */
624 typedef struct {
625 ev_tstamp at;
626 WT w;
627 } ANHE;
628
629 #define ANHE_w(he) (he).w /* access watcher, read-write */
630 #define ANHE_at(he) (he).at /* access cached at, read-only */
631 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
632#else
633 /* a heap element */
634 typedef WT ANHE;
635
636 #define ANHE_w(he) (he)
637 #define ANHE_at(he) (he)->at
638 #define ANHE_at_cache(he)
431#endif 639#endif
432 640
433#if EV_MULTIPLICITY 641#if EV_MULTIPLICITY
434 642
435 struct ev_loop 643 struct ev_loop
… …
454 662
455 static int ev_default_loop_ptr; 663 static int ev_default_loop_ptr;
456 664
457#endif 665#endif
458 666
667#if EV_MINIMAL < 2
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else
672# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif
676
677#define EVUNLOOP_RECURSE 0x80
678
459/*****************************************************************************/ 679/*****************************************************************************/
460 680
681#ifndef EV_HAVE_EV_TIME
461ev_tstamp 682ev_tstamp
462ev_time (void) 683ev_time (void)
463{ 684{
464#if EV_USE_REALTIME 685#if EV_USE_REALTIME
686 if (expect_true (have_realtime))
687 {
465 struct timespec ts; 688 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 689 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 690 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 691 }
692#endif
693
469 struct timeval tv; 694 struct timeval tv;
470 gettimeofday (&tv, 0); 695 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 696 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 697}
698#endif
474 699
475ev_tstamp inline_size 700inline_size ev_tstamp
476get_clock (void) 701get_clock (void)
477{ 702{
478#if EV_USE_MONOTONIC 703#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 704 if (expect_true (have_monotonic))
480 { 705 {
… …
513 struct timeval tv; 738 struct timeval tv;
514 739
515 tv.tv_sec = (time_t)delay; 740 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517 742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */
518 select (0, 0, 0, 0, &tv); 746 select (0, 0, 0, 0, &tv);
519#endif 747#endif
520 } 748 }
521} 749}
522 750
523/*****************************************************************************/ 751/*****************************************************************************/
524 752
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 754
527int inline_size 755/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */
757inline_size int
528array_nextsize (int elem, int cur, int cnt) 758array_nextsize (int elem, int cur, int cnt)
529{ 759{
530 int ncur = cur + 1; 760 int ncur = cur + 1;
531 761
532 do 762 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 779array_realloc (int elem, void *base, int *cur, int cnt)
550{ 780{
551 *cur = array_nextsize (elem, *cur, cnt); 781 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 782 return ev_realloc (base, elem * *cur);
553} 783}
784
785#define array_init_zero(base,count) \
786 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 787
555#define array_needsize(type,base,cur,cnt,init) \ 788#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 789 if (expect_false ((cnt) > (cur))) \
557 { \ 790 { \
558 int ocur_ = (cur); \ 791 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 803 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 804 }
572#endif 805#endif
573 806
574#define array_free(stem, idx) \ 807#define array_free(stem, idx) \
575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 808 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576 809
577/*****************************************************************************/ 810/*****************************************************************************/
811
812/* dummy callback for pending events */
813static void noinline
814pendingcb (EV_P_ ev_prepare *w, int revents)
815{
816}
578 817
579void noinline 818void noinline
580ev_feed_event (EV_P_ void *w, int revents) 819ev_feed_event (EV_P_ void *w, int revents)
581{ 820{
582 W w_ = (W)w; 821 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 830 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 831 pendings [pri][w_->pending - 1].events = revents;
593 } 832 }
594} 833}
595 834
596void inline_speed 835inline_speed void
836feed_reverse (EV_P_ W w)
837{
838 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
839 rfeeds [rfeedcnt++] = w;
840}
841
842inline_size void
843feed_reverse_done (EV_P_ int revents)
844{
845 do
846 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
847 while (rfeedcnt);
848}
849
850inline_speed void
597queue_events (EV_P_ W *events, int eventcnt, int type) 851queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 852{
599 int i; 853 int i;
600 854
601 for (i = 0; i < eventcnt; ++i) 855 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 856 ev_feed_event (EV_A_ events [i], type);
603} 857}
604 858
605/*****************************************************************************/ 859/*****************************************************************************/
606 860
607void inline_size 861inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 862fd_event_nc (EV_P_ int fd, int revents)
622{ 863{
623 ANFD *anfd = anfds + fd; 864 ANFD *anfd = anfds + fd;
624 ev_io *w; 865 ev_io *w;
625 866
626 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
630 if (ev) 871 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 872 ev_feed_event (EV_A_ (W)w, ev);
632 } 873 }
633} 874}
634 875
876/* do not submit kernel events for fds that have reify set */
877/* because that means they changed while we were polling for new events */
878inline_speed void
879fd_event (EV_P_ int fd, int revents)
880{
881 ANFD *anfd = anfds + fd;
882
883 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents);
885}
886
635void 887void
636ev_feed_fd_event (EV_P_ int fd, int revents) 888ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 889{
638 if (fd >= 0 && fd < anfdmax) 890 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 891 fd_event_nc (EV_A_ fd, revents);
640} 892}
641 893
642void inline_size 894/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */
896inline_size void
643fd_reify (EV_P) 897fd_reify (EV_P)
644{ 898{
645 int i; 899 int i;
646 900
647 for (i = 0; i < fdchangecnt; ++i) 901 for (i = 0; i < fdchangecnt; ++i)
… …
656 events |= (unsigned char)w->events; 910 events |= (unsigned char)w->events;
657 911
658#if EV_SELECT_IS_WINSOCKET 912#if EV_SELECT_IS_WINSOCKET
659 if (events) 913 if (events)
660 { 914 {
661 unsigned long argp; 915 unsigned long arg;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
665 anfd->handle = _get_osfhandle (fd);
666 #endif
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668 } 918 }
669#endif 919#endif
670 920
671 { 921 {
672 unsigned char o_events = anfd->events; 922 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify; 923 unsigned char o_reify = anfd->reify;
674 924
675 anfd->reify = 0; 925 anfd->reify = 0;
676 anfd->events = events; 926 anfd->events = events;
677 927
678 if (o_events != events || o_reify & EV_IOFDSET) 928 if (o_events != events || o_reify & EV__IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 929 backend_modify (EV_A_ fd, o_events, events);
680 } 930 }
681 } 931 }
682 932
683 fdchangecnt = 0; 933 fdchangecnt = 0;
684} 934}
685 935
686void inline_size 936/* something about the given fd changed */
937inline_size void
687fd_change (EV_P_ int fd, int flags) 938fd_change (EV_P_ int fd, int flags)
688{ 939{
689 unsigned char reify = anfds [fd].reify; 940 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 941 anfds [fd].reify |= flags;
691 942
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 946 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 947 fdchanges [fdchangecnt - 1] = fd;
697 } 948 }
698} 949}
699 950
700void inline_speed 951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void
701fd_kill (EV_P_ int fd) 953fd_kill (EV_P_ int fd)
702{ 954{
703 ev_io *w; 955 ev_io *w;
704 956
705 while ((w = (ev_io *)anfds [fd].head)) 957 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 959 ev_io_stop (EV_A_ w);
708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709 } 961 }
710} 962}
711 963
712int inline_size 964/* check whether the given fd is atcually valid, for error recovery */
965inline_size int
713fd_valid (int fd) 966fd_valid (int fd)
714{ 967{
715#ifdef _WIN32 968#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 969 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 970#else
718 return fcntl (fd, F_GETFD) != -1; 971 return fcntl (fd, F_GETFD) != -1;
719#endif 972#endif
720} 973}
721 974
… …
725{ 978{
726 int fd; 979 int fd;
727 980
728 for (fd = 0; fd < anfdmax; ++fd) 981 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 982 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 983 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 984 fd_kill (EV_A_ fd);
732} 985}
733 986
734/* called on ENOMEM in select/poll to kill some fds and retry */ 987/* called on ENOMEM in select/poll to kill some fds and retry */
735static void noinline 988static void noinline
… …
739 992
740 for (fd = anfdmax; fd--; ) 993 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 994 if (anfds [fd].events)
742 { 995 {
743 fd_kill (EV_A_ fd); 996 fd_kill (EV_A_ fd);
744 return; 997 break;
745 } 998 }
746} 999}
747 1000
748/* usually called after fork if backend needs to re-arm all fds from scratch */ 1001/* usually called after fork if backend needs to re-arm all fds from scratch */
749static void noinline 1002static void noinline
… …
753 1006
754 for (fd = 0; fd < anfdmax; ++fd) 1007 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1008 if (anfds [fd].events)
756 { 1009 {
757 anfds [fd].events = 0; 1010 anfds [fd].events = 0;
1011 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1013 }
760} 1014}
761 1015
762/*****************************************************************************/ 1016/*****************************************************************************/
1017
1018/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree.
1022 */
763 1023
764/* 1024/*
765 * at the moment we allow libev the luxury of two heaps, 1025 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1026 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1027 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1028 * the difference is about 5% with 50000+ watchers.
769 */ 1029 */
770#define USE_4HEAP !EV_MINIMAL
771#define USE_4HEAP 1/* they do not work corretcly */
772#if USE_4HEAP 1030#if EV_USE_4HEAP
773 1031
774#define DHEAP 4 1032#define DHEAP 4
775#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1033#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1034#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1035#define UPHEAP_DONE(p,k) ((p) == (k))
776 1036
777/* towards the root */ 1037/* away from the root */
778void inline_speed 1038inline_speed void
779upheap (WT *heap, int k) 1039downheap (ANHE *heap, int N, int k)
780{ 1040{
781 WT w = heap [k]; 1041 ANHE he = heap [k];
1042 ANHE *E = heap + N + HEAP0;
782 1043
783 for (;;) 1044 for (;;)
784 { 1045 {
785 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787 if (p == k || heap [p]->at <= w->at)
788 break;
789
790 heap [k] = heap [p];
791 ev_active (heap [k]) = k;
792 k = p;
793 }
794
795 heap [k] = w;
796 ev_active (heap [k]) = k;
797}
798
799/* away from the root */
800void inline_speed
801downheap (WT *heap, int N, int k)
802{
803 WT w = heap [k];
804 WT *E = heap + N + HEAP0;
805
806 for (;;)
807 {
808 ev_tstamp minat; 1046 ev_tstamp minat;
809 WT *minpos; 1047 ANHE *minpos;
810 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1048 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811 1049
812 // find minimum child 1050 /* find minimum child */
813 if (expect_true (pos + DHEAP - 1 < E)) 1051 if (expect_true (pos + DHEAP - 1 < E))
814 { 1052 {
815 /* fast path */
816 (minpos = pos + 0), (minat = (*minpos)->at); 1053 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
817 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1054 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
818 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1055 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
819 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1056 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1057 }
1058 else if (pos < E)
1059 {
1060 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
820 } 1064 }
821 else 1065 else
822 {
823 /* slow path */
824 if (pos >= E)
825 break;
826 (minpos = pos + 0), (minat = (*minpos)->at);
827 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830 }
831
832 if (w->at <= minat)
833 break; 1066 break;
834 1067
835 ev_active (*minpos) = k; 1068 if (ANHE_at (he) <= minat)
1069 break;
1070
836 heap [k] = *minpos; 1071 heap [k] = *minpos;
1072 ev_active (ANHE_w (*minpos)) = k;
837 1073
838 k = minpos - heap; 1074 k = minpos - heap;
839 } 1075 }
840 1076
841 heap [k] = w; 1077 heap [k] = he;
842 ev_active (heap [k]) = k; 1078 ev_active (ANHE_w (he)) = k;
843} 1079}
844 1080
845#else // 4HEAP 1081#else /* 4HEAP */
846 1082
847#define HEAP0 1 1083#define HEAP0 1
1084#define HPARENT(k) ((k) >> 1)
1085#define UPHEAP_DONE(p,k) (!(p))
848 1086
849/* towards the root */ 1087/* away from the root */
850void inline_speed 1088inline_speed void
851upheap (WT *heap, int k) 1089downheap (ANHE *heap, int N, int k)
852{ 1090{
853 WT w = heap [k]; 1091 ANHE he = heap [k];
854 1092
855 for (;;) 1093 for (;;)
856 { 1094 {
857 int p = k >> 1; 1095 int c = k << 1;
858 1096
859 /* maybe we could use a dummy element at heap [0]? */ 1097 if (c >= N + HEAP0)
860 if (!p || heap [p]->at <= w->at)
861 break; 1098 break;
862 1099
863 heap [k] = heap [p]; 1100 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
864 ev_active (heap [k]) = k; 1101 ? 1 : 0;
865 k = p;
866 }
867 1102
868 heap [k] = w; 1103 if (ANHE_at (he) <= ANHE_at (heap [c]))
869 ev_active (heap [k]) = k;
870}
871
872/* away from the root */
873void inline_speed
874downheap (WT *heap, int N, int k)
875{
876 WT w = heap [k];
877
878 for (;;)
879 {
880 int c = k << 1;
881
882 if (c > N)
883 break; 1104 break;
884 1105
885 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886 ? 1 : 0;
887
888 if (w->at <= heap [c]->at)
889 break;
890
891 heap [k] = heap [c]; 1106 heap [k] = heap [c];
892 ((W)heap [k])->active = k; 1107 ev_active (ANHE_w (heap [k])) = k;
893 1108
894 k = c; 1109 k = c;
895 } 1110 }
896 1111
897 heap [k] = w; 1112 heap [k] = he;
1113 ev_active (ANHE_w (he)) = k;
1114}
1115#endif
1116
1117/* towards the root */
1118inline_speed void
1119upheap (ANHE *heap, int k)
1120{
1121 ANHE he = heap [k];
1122
1123 for (;;)
1124 {
1125 int p = HPARENT (k);
1126
1127 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1128 break;
1129
1130 heap [k] = heap [p];
898 ev_active (heap [k]) = k; 1131 ev_active (ANHE_w (heap [k])) = k;
899} 1132 k = p;
900#endif 1133 }
901 1134
902void inline_size 1135 heap [k] = he;
1136 ev_active (ANHE_w (he)) = k;
1137}
1138
1139/* move an element suitably so it is in a correct place */
1140inline_size void
903adjustheap (WT *heap, int N, int k) 1141adjustheap (ANHE *heap, int N, int k)
904{ 1142{
1143 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
905 upheap (heap, k); 1144 upheap (heap, k);
1145 else
906 downheap (heap, N, k); 1146 downheap (heap, N, k);
1147}
1148
1149/* rebuild the heap: this function is used only once and executed rarely */
1150inline_size void
1151reheap (ANHE *heap, int N)
1152{
1153 int i;
1154
1155 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1156 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1157 for (i = 0; i < N; ++i)
1158 upheap (heap, i + HEAP0);
907} 1159}
908 1160
909/*****************************************************************************/ 1161/*****************************************************************************/
910 1162
1163/* associate signal watchers to a signal signal */
911typedef struct 1164typedef struct
912{ 1165{
1166 EV_ATOMIC_T pending;
1167#if EV_MULTIPLICITY
1168 EV_P;
1169#endif
913 WL head; 1170 WL head;
914 EV_ATOMIC_T gotsig;
915} ANSIG; 1171} ANSIG;
916 1172
917static ANSIG *signals; 1173static ANSIG signals [EV_NSIG - 1];
918static int signalmax;
919
920static EV_ATOMIC_T gotsig;
921
922void inline_size
923signals_init (ANSIG *base, int count)
924{
925 while (count--)
926 {
927 base->head = 0;
928 base->gotsig = 0;
929
930 ++base;
931 }
932}
933 1174
934/*****************************************************************************/ 1175/*****************************************************************************/
935 1176
936void inline_speed 1177/* used to prepare libev internal fd's */
1178/* this is not fork-safe */
1179inline_speed void
937fd_intern (int fd) 1180fd_intern (int fd)
938{ 1181{
939#ifdef _WIN32 1182#ifdef _WIN32
940 int arg = 1; 1183 unsigned long arg = 1;
941 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1184 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
942#else 1185#else
943 fcntl (fd, F_SETFD, FD_CLOEXEC); 1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
944 fcntl (fd, F_SETFL, O_NONBLOCK); 1187 fcntl (fd, F_SETFL, O_NONBLOCK);
945#endif 1188#endif
946} 1189}
947 1190
948static void noinline 1191static void noinline
949evpipe_init (EV_P) 1192evpipe_init (EV_P)
950{ 1193{
951 if (!ev_is_active (&pipeev)) 1194 if (!ev_is_active (&pipe_w))
952 { 1195 {
953#if EV_USE_EVENTFD 1196#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL)
954 if ((evfd = eventfd (0, 0)) >= 0) 1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
955 { 1202 {
956 evpipe [0] = -1; 1203 evpipe [0] = -1;
957 fd_intern (evfd); 1204 fd_intern (evfd); /* doing it twice doesn't hurt */
958 ev_io_set (&pipeev, evfd, EV_READ); 1205 ev_io_set (&pipe_w, evfd, EV_READ);
959 } 1206 }
960 else 1207 else
961#endif 1208#endif
962 { 1209 {
963 while (pipe (evpipe)) 1210 while (pipe (evpipe))
964 syserr ("(libev) error creating signal/async pipe"); 1211 ev_syserr ("(libev) error creating signal/async pipe");
965 1212
966 fd_intern (evpipe [0]); 1213 fd_intern (evpipe [0]);
967 fd_intern (evpipe [1]); 1214 fd_intern (evpipe [1]);
968 ev_io_set (&pipeev, evpipe [0], EV_READ); 1215 ev_io_set (&pipe_w, evpipe [0], EV_READ);
969 } 1216 }
970 1217
971 ev_io_start (EV_A_ &pipeev); 1218 ev_io_start (EV_A_ &pipe_w);
972 ev_unref (EV_A); /* watcher should not keep loop alive */ 1219 ev_unref (EV_A); /* watcher should not keep loop alive */
973 } 1220 }
974} 1221}
975 1222
976void inline_size 1223inline_size void
977evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978{ 1225{
979 if (!*flag) 1226 if (!*flag)
980 { 1227 {
981 int old_errno = errno; /* save errno because write might clobber it */ 1228 int old_errno = errno; /* save errno because write might clobber it */
… …
994 1241
995 errno = old_errno; 1242 errno = old_errno;
996 } 1243 }
997} 1244}
998 1245
1246/* called whenever the libev signal pipe */
1247/* got some events (signal, async) */
999static void 1248static void
1000pipecb (EV_P_ ev_io *iow, int revents) 1249pipecb (EV_P_ ev_io *iow, int revents)
1001{ 1250{
1251 int i;
1252
1002#if EV_USE_EVENTFD 1253#if EV_USE_EVENTFD
1003 if (evfd >= 0) 1254 if (evfd >= 0)
1004 { 1255 {
1005 uint64_t counter; 1256 uint64_t counter;
1006 read (evfd, &counter, sizeof (uint64_t)); 1257 read (evfd, &counter, sizeof (uint64_t));
… …
1010 { 1261 {
1011 char dummy; 1262 char dummy;
1012 read (evpipe [0], &dummy, 1); 1263 read (evpipe [0], &dummy, 1);
1013 } 1264 }
1014 1265
1015 if (gotsig && ev_is_default_loop (EV_A)) 1266 if (sig_pending)
1016 { 1267 {
1017 int signum; 1268 sig_pending = 0;
1018 gotsig = 0;
1019 1269
1020 for (signum = signalmax; signum--; ) 1270 for (i = EV_NSIG - 1; i--; )
1021 if (signals [signum].gotsig) 1271 if (expect_false (signals [i].pending))
1022 ev_feed_signal_event (EV_A_ signum + 1); 1272 ev_feed_signal_event (EV_A_ i + 1);
1023 } 1273 }
1024 1274
1025#if EV_ASYNC_ENABLE 1275#if EV_ASYNC_ENABLE
1026 if (gotasync) 1276 if (async_pending)
1027 { 1277 {
1028 int i; 1278 async_pending = 0;
1029 gotasync = 0;
1030 1279
1031 for (i = asynccnt; i--; ) 1280 for (i = asynccnt; i--; )
1032 if (asyncs [i]->sent) 1281 if (asyncs [i]->sent)
1033 { 1282 {
1034 asyncs [i]->sent = 0; 1283 asyncs [i]->sent = 0;
… …
1042 1291
1043static void 1292static void
1044ev_sighandler (int signum) 1293ev_sighandler (int signum)
1045{ 1294{
1046#if EV_MULTIPLICITY 1295#if EV_MULTIPLICITY
1047 struct ev_loop *loop = &default_loop_struct; 1296 EV_P = signals [signum - 1].loop;
1048#endif 1297#endif
1049 1298
1050#if _WIN32 1299#ifdef _WIN32
1051 signal (signum, ev_sighandler); 1300 signal (signum, ev_sighandler);
1052#endif 1301#endif
1053 1302
1054 signals [signum - 1].gotsig = 1; 1303 signals [signum - 1].pending = 1;
1055 evpipe_write (EV_A_ &gotsig); 1304 evpipe_write (EV_A_ &sig_pending);
1056} 1305}
1057 1306
1058void noinline 1307void noinline
1059ev_feed_signal_event (EV_P_ int signum) 1308ev_feed_signal_event (EV_P_ int signum)
1060{ 1309{
1061 WL w; 1310 WL w;
1062 1311
1312 if (expect_false (signum <= 0 || signum > EV_NSIG))
1313 return;
1314
1315 --signum;
1316
1063#if EV_MULTIPLICITY 1317#if EV_MULTIPLICITY
1064 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1318 /* it is permissible to try to feed a signal to the wrong loop */
1065#endif 1319 /* or, likely more useful, feeding a signal nobody is waiting for */
1066 1320
1067 --signum; 1321 if (expect_false (signals [signum].loop != EV_A))
1068
1069 if (signum < 0 || signum >= signalmax)
1070 return; 1322 return;
1323#endif
1071 1324
1072 signals [signum].gotsig = 0; 1325 signals [signum].pending = 0;
1073 1326
1074 for (w = signals [signum].head; w; w = w->next) 1327 for (w = signals [signum].head; w; w = w->next)
1075 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1076} 1329}
1077 1330
1331#if EV_USE_SIGNALFD
1332static void
1333sigfdcb (EV_P_ ev_io *iow, int revents)
1334{
1335 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1336
1337 for (;;)
1338 {
1339 ssize_t res = read (sigfd, si, sizeof (si));
1340
1341 /* not ISO-C, as res might be -1, but works with SuS */
1342 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1343 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1344
1345 if (res < (ssize_t)sizeof (si))
1346 break;
1347 }
1348}
1349#endif
1350
1078/*****************************************************************************/ 1351/*****************************************************************************/
1079 1352
1080static WL childs [EV_PID_HASHSIZE]; 1353static WL childs [EV_PID_HASHSIZE];
1081 1354
1082#ifndef _WIN32 1355#ifndef _WIN32
… …
1085 1358
1086#ifndef WIFCONTINUED 1359#ifndef WIFCONTINUED
1087# define WIFCONTINUED(status) 0 1360# define WIFCONTINUED(status) 0
1088#endif 1361#endif
1089 1362
1090void inline_speed 1363/* handle a single child status event */
1364inline_speed void
1091child_reap (EV_P_ int chain, int pid, int status) 1365child_reap (EV_P_ int chain, int pid, int status)
1092{ 1366{
1093 ev_child *w; 1367 ev_child *w;
1094 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095 1369
… …
1108 1382
1109#ifndef WCONTINUED 1383#ifndef WCONTINUED
1110# define WCONTINUED 0 1384# define WCONTINUED 0
1111#endif 1385#endif
1112 1386
1387/* called on sigchld etc., calls waitpid */
1113static void 1388static void
1114childcb (EV_P_ ev_signal *sw, int revents) 1389childcb (EV_P_ ev_signal *sw, int revents)
1115{ 1390{
1116 int pid, status; 1391 int pid, status;
1117 1392
… …
1198 /* kqueue is borked on everything but netbsd apparently */ 1473 /* kqueue is borked on everything but netbsd apparently */
1199 /* it usually doesn't work correctly on anything but sockets and pipes */ 1474 /* it usually doesn't work correctly on anything but sockets and pipes */
1200 flags &= ~EVBACKEND_KQUEUE; 1475 flags &= ~EVBACKEND_KQUEUE;
1201#endif 1476#endif
1202#ifdef __APPLE__ 1477#ifdef __APPLE__
1203 // flags &= ~EVBACKEND_KQUEUE; for documentation 1478 /* only select works correctly on that "unix-certified" platform */
1204 flags &= ~EVBACKEND_POLL; 1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1205#endif 1481#endif
1206 1482
1207 return flags; 1483 return flags;
1208} 1484}
1209 1485
… …
1223ev_backend (EV_P) 1499ev_backend (EV_P)
1224{ 1500{
1225 return backend; 1501 return backend;
1226} 1502}
1227 1503
1504#if EV_MINIMAL < 2
1228unsigned int 1505unsigned int
1229ev_loop_count (EV_P) 1506ev_loop_count (EV_P)
1230{ 1507{
1231 return loop_count; 1508 return loop_count;
1232} 1509}
1233 1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{
1514 return loop_depth;
1515}
1516
1234void 1517void
1235ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1236{ 1519{
1237 io_blocktime = interval; 1520 io_blocktime = interval;
1238} 1521}
… …
1241ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242{ 1525{
1243 timeout_blocktime = interval; 1526 timeout_blocktime = interval;
1244} 1527}
1245 1528
1529void
1530ev_set_userdata (EV_P_ void *data)
1531{
1532 userdata = data;
1533}
1534
1535void *
1536ev_userdata (EV_P)
1537{
1538 return userdata;
1539}
1540
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1542{
1543 invoke_cb = invoke_pending_cb;
1544}
1545
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1547{
1548 release_cb = release;
1549 acquire_cb = acquire;
1550}
1551#endif
1552
1553/* initialise a loop structure, must be zero-initialised */
1246static void noinline 1554static void noinline
1247loop_init (EV_P_ unsigned int flags) 1555loop_init (EV_P_ unsigned int flags)
1248{ 1556{
1249 if (!backend) 1557 if (!backend)
1250 { 1558 {
1559#if EV_USE_REALTIME
1560 if (!have_realtime)
1561 {
1562 struct timespec ts;
1563
1564 if (!clock_gettime (CLOCK_REALTIME, &ts))
1565 have_realtime = 1;
1566 }
1567#endif
1568
1251#if EV_USE_MONOTONIC 1569#if EV_USE_MONOTONIC
1570 if (!have_monotonic)
1252 { 1571 {
1253 struct timespec ts; 1572 struct timespec ts;
1573
1254 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1574 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1255 have_monotonic = 1; 1575 have_monotonic = 1;
1256 } 1576 }
1257#endif 1577#endif
1578
1579 /* pid check not overridable via env */
1580#ifndef _WIN32
1581 if (flags & EVFLAG_FORKCHECK)
1582 curpid = getpid ();
1583#endif
1584
1585 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS"));
1258 1589
1259 ev_rt_now = ev_time (); 1590 ev_rt_now = ev_time ();
1260 mn_now = get_clock (); 1591 mn_now = get_clock ();
1261 now_floor = mn_now; 1592 now_floor = mn_now;
1262 rtmn_diff = ev_rt_now - mn_now; 1593 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2
1595 invoke_cb = ev_invoke_pending;
1596#endif
1263 1597
1264 io_blocktime = 0.; 1598 io_blocktime = 0.;
1265 timeout_blocktime = 0.; 1599 timeout_blocktime = 0.;
1266 backend = 0; 1600 backend = 0;
1267 backend_fd = -1; 1601 backend_fd = -1;
1268 gotasync = 0; 1602 sig_pending = 0;
1603#if EV_ASYNC_ENABLE
1604 async_pending = 0;
1605#endif
1269#if EV_USE_INOTIFY 1606#if EV_USE_INOTIFY
1270 fs_fd = -2; 1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1271#endif 1608#endif
1272 1609#if EV_USE_SIGNALFD
1273 /* pid check not overridable via env */ 1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1274#ifndef _WIN32
1275 if (flags & EVFLAG_FORKCHECK)
1276 curpid = getpid ();
1277#endif 1611#endif
1278
1279 if (!(flags & EVFLAG_NOENV)
1280 && !enable_secure ()
1281 && getenv ("LIBEV_FLAGS"))
1282 flags = atoi (getenv ("LIBEV_FLAGS"));
1283 1612
1284 if (!(flags & 0x0000ffffU)) 1613 if (!(flags & 0x0000ffffU))
1285 flags |= ev_recommended_backends (); 1614 flags |= ev_recommended_backends ();
1286 1615
1287#if EV_USE_PORT 1616#if EV_USE_PORT
… …
1298#endif 1627#endif
1299#if EV_USE_SELECT 1628#if EV_USE_SELECT
1300 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1301#endif 1630#endif
1302 1631
1632 ev_prepare_init (&pending_w, pendingcb);
1633
1303 ev_init (&pipeev, pipecb); 1634 ev_init (&pipe_w, pipecb);
1304 ev_set_priority (&pipeev, EV_MAXPRI); 1635 ev_set_priority (&pipe_w, EV_MAXPRI);
1305 } 1636 }
1306} 1637}
1307 1638
1639/* free up a loop structure */
1308static void noinline 1640static void noinline
1309loop_destroy (EV_P) 1641loop_destroy (EV_P)
1310{ 1642{
1311 int i; 1643 int i;
1312 1644
1313 if (ev_is_active (&pipeev)) 1645 if (ev_is_active (&pipe_w))
1314 { 1646 {
1315 ev_ref (EV_A); /* signal watcher */ 1647 /*ev_ref (EV_A);*/
1316 ev_io_stop (EV_A_ &pipeev); 1648 /*ev_io_stop (EV_A_ &pipe_w);*/
1317 1649
1318#if EV_USE_EVENTFD 1650#if EV_USE_EVENTFD
1319 if (evfd >= 0) 1651 if (evfd >= 0)
1320 close (evfd); 1652 close (evfd);
1321#endif 1653#endif
1322 1654
1323 if (evpipe [0] >= 0) 1655 if (evpipe [0] >= 0)
1324 { 1656 {
1325 close (evpipe [0]); 1657 EV_WIN32_CLOSE_FD (evpipe [0]);
1326 close (evpipe [1]); 1658 EV_WIN32_CLOSE_FD (evpipe [1]);
1327 } 1659 }
1328 } 1660 }
1661
1662#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w))
1664 close (sigfd);
1665#endif
1329 1666
1330#if EV_USE_INOTIFY 1667#if EV_USE_INOTIFY
1331 if (fs_fd >= 0) 1668 if (fs_fd >= 0)
1332 close (fs_fd); 1669 close (fs_fd);
1333#endif 1670#endif
… …
1357#if EV_IDLE_ENABLE 1694#if EV_IDLE_ENABLE
1358 array_free (idle, [i]); 1695 array_free (idle, [i]);
1359#endif 1696#endif
1360 } 1697 }
1361 1698
1362 ev_free (anfds); anfdmax = 0; 1699 ev_free (anfds); anfds = 0; anfdmax = 0;
1363 1700
1364 /* have to use the microsoft-never-gets-it-right macro */ 1701 /* have to use the microsoft-never-gets-it-right macro */
1702 array_free (rfeed, EMPTY);
1365 array_free (fdchange, EMPTY); 1703 array_free (fdchange, EMPTY);
1366 array_free (timer, EMPTY); 1704 array_free (timer, EMPTY);
1367#if EV_PERIODIC_ENABLE 1705#if EV_PERIODIC_ENABLE
1368 array_free (periodic, EMPTY); 1706 array_free (periodic, EMPTY);
1369#endif 1707#endif
… …
1378 1716
1379 backend = 0; 1717 backend = 0;
1380} 1718}
1381 1719
1382#if EV_USE_INOTIFY 1720#if EV_USE_INOTIFY
1383void inline_size infy_fork (EV_P); 1721inline_size void infy_fork (EV_P);
1384#endif 1722#endif
1385 1723
1386void inline_size 1724inline_size void
1387loop_fork (EV_P) 1725loop_fork (EV_P)
1388{ 1726{
1389#if EV_USE_PORT 1727#if EV_USE_PORT
1390 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1728 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391#endif 1729#endif
… …
1397#endif 1735#endif
1398#if EV_USE_INOTIFY 1736#if EV_USE_INOTIFY
1399 infy_fork (EV_A); 1737 infy_fork (EV_A);
1400#endif 1738#endif
1401 1739
1402 if (ev_is_active (&pipeev)) 1740 if (ev_is_active (&pipe_w))
1403 { 1741 {
1404 /* this "locks" the handlers against writing to the pipe */ 1742 /* this "locks" the handlers against writing to the pipe */
1405 /* while we modify the fd vars */ 1743 /* while we modify the fd vars */
1406 gotsig = 1; 1744 sig_pending = 1;
1407#if EV_ASYNC_ENABLE 1745#if EV_ASYNC_ENABLE
1408 gotasync = 1; 1746 async_pending = 1;
1409#endif 1747#endif
1410 1748
1411 ev_ref (EV_A); 1749 ev_ref (EV_A);
1412 ev_io_stop (EV_A_ &pipeev); 1750 ev_io_stop (EV_A_ &pipe_w);
1413 1751
1414#if EV_USE_EVENTFD 1752#if EV_USE_EVENTFD
1415 if (evfd >= 0) 1753 if (evfd >= 0)
1416 close (evfd); 1754 close (evfd);
1417#endif 1755#endif
1418 1756
1419 if (evpipe [0] >= 0) 1757 if (evpipe [0] >= 0)
1420 { 1758 {
1421 close (evpipe [0]); 1759 EV_WIN32_CLOSE_FD (evpipe [0]);
1422 close (evpipe [1]); 1760 EV_WIN32_CLOSE_FD (evpipe [1]);
1423 } 1761 }
1424 1762
1425 evpipe_init (EV_A); 1763 evpipe_init (EV_A);
1426 /* now iterate over everything, in case we missed something */ 1764 /* now iterate over everything, in case we missed something */
1427 pipecb (EV_A_ &pipeev, EV_READ); 1765 pipecb (EV_A_ &pipe_w, EV_READ);
1428 } 1766 }
1429 1767
1430 postfork = 0; 1768 postfork = 0;
1431} 1769}
1432 1770
1433#if EV_MULTIPLICITY 1771#if EV_MULTIPLICITY
1772
1434struct ev_loop * 1773struct ev_loop *
1435ev_loop_new (unsigned int flags) 1774ev_loop_new (unsigned int flags)
1436{ 1775{
1437 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1438 1777
1439 memset (loop, 0, sizeof (struct ev_loop)); 1778 memset (EV_A, 0, sizeof (struct ev_loop));
1440
1441 loop_init (EV_A_ flags); 1779 loop_init (EV_A_ flags);
1442 1780
1443 if (ev_backend (EV_A)) 1781 if (ev_backend (EV_A))
1444 return loop; 1782 return EV_A;
1445 1783
1446 return 0; 1784 return 0;
1447} 1785}
1448 1786
1449void 1787void
… …
1455 1793
1456void 1794void
1457ev_loop_fork (EV_P) 1795ev_loop_fork (EV_P)
1458{ 1796{
1459 postfork = 1; /* must be in line with ev_default_fork */ 1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */
1800
1801#if EV_VERIFY
1802static void noinline
1803verify_watcher (EV_P_ W w)
1804{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806
1807 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809}
1810
1811static void noinline
1812verify_heap (EV_P_ ANHE *heap, int N)
1813{
1814 int i;
1815
1816 for (i = HEAP0; i < N + HEAP0; ++i)
1817 {
1818 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1819 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1820 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1821
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 }
1824}
1825
1826static void noinline
1827array_verify (EV_P_ W *ws, int cnt)
1828{
1829 while (cnt--)
1830 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]);
1833 }
1834}
1835#endif
1836
1837#if EV_MINIMAL < 2
1838void
1839ev_loop_verify (EV_P)
1840{
1841#if EV_VERIFY
1842 int i;
1843 WL w;
1844
1845 assert (activecnt >= -1);
1846
1847 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850
1851 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i)
1853 for (w = anfds [i].head; w; w = w->next)
1854 {
1855 verify_watcher (EV_A_ (W)w);
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 }
1859
1860 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt);
1862
1863#if EV_PERIODIC_ENABLE
1864 assert (periodicmax >= periodiccnt);
1865 verify_heap (EV_A_ periodics, periodiccnt);
1866#endif
1867
1868 for (i = NUMPRI; i--; )
1869 {
1870 assert (pendingmax [i] >= pendingcnt [i]);
1871#if EV_IDLE_ENABLE
1872 assert (idleall >= 0);
1873 assert (idlemax [i] >= idlecnt [i]);
1874 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1875#endif
1876 }
1877
1878#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif
1882
1883#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif
1887
1888 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt);
1890
1891 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt);
1893
1894# if 0
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1897# endif
1898#endif
1460} 1899}
1461#endif 1900#endif
1462 1901
1463#if EV_MULTIPLICITY 1902#if EV_MULTIPLICITY
1464struct ev_loop * 1903struct ev_loop *
… …
1469#endif 1908#endif
1470{ 1909{
1471 if (!ev_default_loop_ptr) 1910 if (!ev_default_loop_ptr)
1472 { 1911 {
1473#if EV_MULTIPLICITY 1912#if EV_MULTIPLICITY
1474 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1913 EV_P = ev_default_loop_ptr = &default_loop_struct;
1475#else 1914#else
1476 ev_default_loop_ptr = 1; 1915 ev_default_loop_ptr = 1;
1477#endif 1916#endif
1478 1917
1479 loop_init (EV_A_ flags); 1918 loop_init (EV_A_ flags);
… …
1496 1935
1497void 1936void
1498ev_default_destroy (void) 1937ev_default_destroy (void)
1499{ 1938{
1500#if EV_MULTIPLICITY 1939#if EV_MULTIPLICITY
1501 struct ev_loop *loop = ev_default_loop_ptr; 1940 EV_P = ev_default_loop_ptr;
1502#endif 1941#endif
1942
1943 ev_default_loop_ptr = 0;
1503 1944
1504#ifndef _WIN32 1945#ifndef _WIN32
1505 ev_ref (EV_A); /* child watcher */ 1946 ev_ref (EV_A); /* child watcher */
1506 ev_signal_stop (EV_A_ &childev); 1947 ev_signal_stop (EV_A_ &childev);
1507#endif 1948#endif
… …
1511 1952
1512void 1953void
1513ev_default_fork (void) 1954ev_default_fork (void)
1514{ 1955{
1515#if EV_MULTIPLICITY 1956#if EV_MULTIPLICITY
1516 struct ev_loop *loop = ev_default_loop_ptr; 1957 EV_P = ev_default_loop_ptr;
1517#endif 1958#endif
1518 1959
1519 if (backend)
1520 postfork = 1; /* must be in line with ev_loop_fork */ 1960 postfork = 1; /* must be in line with ev_loop_fork */
1521} 1961}
1522 1962
1523/*****************************************************************************/ 1963/*****************************************************************************/
1524 1964
1525void 1965void
1526ev_invoke (EV_P_ void *w, int revents) 1966ev_invoke (EV_P_ void *w, int revents)
1527{ 1967{
1528 EV_CB_INVOKE ((W)w, revents); 1968 EV_CB_INVOKE ((W)w, revents);
1529} 1969}
1530 1970
1531void inline_speed 1971unsigned int
1532call_pending (EV_P) 1972ev_pending_count (EV_P)
1973{
1974 int pri;
1975 unsigned int count = 0;
1976
1977 for (pri = NUMPRI; pri--; )
1978 count += pendingcnt [pri];
1979
1980 return count;
1981}
1982
1983void noinline
1984ev_invoke_pending (EV_P)
1533{ 1985{
1534 int pri; 1986 int pri;
1535 1987
1536 for (pri = NUMPRI; pri--; ) 1988 for (pri = NUMPRI; pri--; )
1537 while (pendingcnt [pri]) 1989 while (pendingcnt [pri])
1538 { 1990 {
1539 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1540 1992
1541 if (expect_true (p->w))
1542 {
1543 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1544 1995
1545 p->w->pending = 0; 1996 p->w->pending = 0;
1546 EV_CB_INVOKE (p->w, p->events); 1997 EV_CB_INVOKE (p->w, p->events);
1547 } 1998 EV_FREQUENT_CHECK;
1548 } 1999 }
1549} 2000}
1550 2001
1551#if EV_IDLE_ENABLE 2002#if EV_IDLE_ENABLE
1552void inline_size 2003/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */
2005inline_size void
1553idle_reify (EV_P) 2006idle_reify (EV_P)
1554{ 2007{
1555 if (expect_false (idleall)) 2008 if (expect_false (idleall))
1556 { 2009 {
1557 int pri; 2010 int pri;
… …
1569 } 2022 }
1570 } 2023 }
1571} 2024}
1572#endif 2025#endif
1573 2026
1574void inline_size 2027/* make timers pending */
2028inline_size void
1575timers_reify (EV_P) 2029timers_reify (EV_P)
1576{ 2030{
2031 EV_FREQUENT_CHECK;
2032
1577 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2033 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1578 { 2034 {
1579 ev_timer *w = (ev_timer *)timers [HEAP0]; 2035 do
1580
1581 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1582
1583 /* first reschedule or stop timer */
1584 if (w->repeat)
1585 { 2036 {
2037 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2038
2039 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2040
2041 /* first reschedule or stop timer */
2042 if (w->repeat)
2043 {
2044 ev_at (w) += w->repeat;
2045 if (ev_at (w) < mn_now)
2046 ev_at (w) = mn_now;
2047
1586 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2048 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1587 2049
1588 ev_at (w) += w->repeat; 2050 ANHE_at_cache (timers [HEAP0]);
1589 if (ev_at (w) < mn_now)
1590 ev_at (w) = mn_now;
1591
1592 downheap (timers, timercnt, HEAP0); 2051 downheap (timers, timercnt, HEAP0);
2052 }
2053 else
2054 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2055
2056 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w);
1593 } 2058 }
1594 else 2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1595 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1596 2060
1597 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2061 feed_reverse_done (EV_A_ EV_TIMEOUT);
1598 } 2062 }
1599} 2063}
1600 2064
1601#if EV_PERIODIC_ENABLE 2065#if EV_PERIODIC_ENABLE
1602void inline_size 2066/* make periodics pending */
2067inline_size void
1603periodics_reify (EV_P) 2068periodics_reify (EV_P)
1604{ 2069{
2070 EV_FREQUENT_CHECK;
2071
1605 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1606 { 2073 {
1607 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2074 int feed_count = 0;
1608 2075
1609 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2076 do
1610
1611 /* first reschedule or stop timer */
1612 if (w->reschedule_cb)
1613 { 2077 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2081
2082 /* first reschedule or stop timer */
2083 if (w->reschedule_cb)
2084 {
1614 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2085 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2086
1615 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2087 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2088
2089 ANHE_at_cache (periodics [HEAP0]);
1616 downheap (periodics, periodiccnt, 1); 2090 downheap (periodics, periodiccnt, HEAP0);
2091 }
2092 else if (w->interval)
2093 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0);
2110 }
2111 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2113
2114 EV_FREQUENT_CHECK;
2115 feed_reverse (EV_A_ (W)w);
1617 } 2116 }
1618 else if (w->interval) 2117 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1619 {
1620 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1622 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1623 downheap (periodics, periodiccnt, HEAP0);
1624 }
1625 else
1626 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1627 2118
1628 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2119 feed_reverse_done (EV_A_ EV_PERIODIC);
1629 } 2120 }
1630} 2121}
1631 2122
2123/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1632static void noinline 2125static void noinline
1633periodics_reschedule (EV_P) 2126periodics_reschedule (EV_P)
1634{ 2127{
1635 int i; 2128 int i;
1636 2129
1637 /* adjust periodics after time jump */ 2130 /* adjust periodics after time jump */
1638 for (i = 1; i <= periodiccnt; ++i) 2131 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1639 { 2132 {
1640 ev_periodic *w = (ev_periodic *)periodics [i]; 2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1641 2134
1642 if (w->reschedule_cb) 2135 if (w->reschedule_cb)
1643 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1644 else if (w->interval) 2137 else if (w->interval)
1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2139
2140 ANHE_at_cache (periodics [i]);
2141 }
2142
2143 reheap (periodics, periodiccnt);
2144}
2145#endif
2146
2147/* adjust all timers by a given offset */
2148static void noinline
2149timers_reschedule (EV_P_ ev_tstamp adjust)
2150{
2151 int i;
2152
2153 for (i = 0; i < timercnt; ++i)
1646 } 2154 {
1647 2155 ANHE *he = timers + i + HEAP0;
1648 /* now rebuild the heap */ 2156 ANHE_w (*he)->at += adjust;
1649 for (i = periodiccnt >> 1; --i; ) 2157 ANHE_at_cache (*he);
1650 downheap (periodics, periodiccnt, i + HEAP0); 2158 }
1651} 2159}
1652#endif
1653 2160
1654void inline_speed 2161/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */
2163inline_speed void
1655time_update (EV_P_ ev_tstamp max_block) 2164time_update (EV_P_ ev_tstamp max_block)
1656{ 2165{
1657 int i;
1658
1659#if EV_USE_MONOTONIC 2166#if EV_USE_MONOTONIC
1660 if (expect_true (have_monotonic)) 2167 if (expect_true (have_monotonic))
1661 { 2168 {
2169 int i;
1662 ev_tstamp odiff = rtmn_diff; 2170 ev_tstamp odiff = rtmn_diff;
1663 2171
1664 mn_now = get_clock (); 2172 mn_now = get_clock ();
1665 2173
1666 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2174 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1692 ev_rt_now = ev_time (); 2200 ev_rt_now = ev_time ();
1693 mn_now = get_clock (); 2201 mn_now = get_clock ();
1694 now_floor = mn_now; 2202 now_floor = mn_now;
1695 } 2203 }
1696 2204
2205 /* no timer adjustment, as the monotonic clock doesn't jump */
2206 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1697# if EV_PERIODIC_ENABLE 2207# if EV_PERIODIC_ENABLE
1698 periodics_reschedule (EV_A); 2208 periodics_reschedule (EV_A);
1699# endif 2209# endif
1700 /* no timer adjustment, as the monotonic clock doesn't jump */
1701 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702 } 2210 }
1703 else 2211 else
1704#endif 2212#endif
1705 { 2213 {
1706 ev_rt_now = ev_time (); 2214 ev_rt_now = ev_time ();
1707 2215
1708 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2216 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709 { 2217 {
2218 /* adjust timers. this is easy, as the offset is the same for all of them */
2219 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1710#if EV_PERIODIC_ENABLE 2220#if EV_PERIODIC_ENABLE
1711 periodics_reschedule (EV_A); 2221 periodics_reschedule (EV_A);
1712#endif 2222#endif
1713 /* adjust timers. this is easy, as the offset is the same for all of them */
1714 for (i = 1; i <= timercnt; ++i)
1715 ev_at (timers [i]) += ev_rt_now - mn_now;
1716 } 2223 }
1717 2224
1718 mn_now = ev_rt_now; 2225 mn_now = ev_rt_now;
1719 } 2226 }
1720} 2227}
1721 2228
1722void 2229void
1723ev_ref (EV_P)
1724{
1725 ++activecnt;
1726}
1727
1728void
1729ev_unref (EV_P)
1730{
1731 --activecnt;
1732}
1733
1734static int loop_done;
1735
1736void
1737ev_loop (EV_P_ int flags) 2230ev_loop (EV_P_ int flags)
1738{ 2231{
2232#if EV_MINIMAL < 2
2233 ++loop_depth;
2234#endif
2235
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2237
1739 loop_done = EVUNLOOP_CANCEL; 2238 loop_done = EVUNLOOP_CANCEL;
1740 2239
1741 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1742 2241
1743 do 2242 do
1744 { 2243 {
2244#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A);
2246#endif
2247
1745#ifndef _WIN32 2248#ifndef _WIN32
1746 if (expect_false (curpid)) /* penalise the forking check even more */ 2249 if (expect_false (curpid)) /* penalise the forking check even more */
1747 if (expect_false (getpid () != curpid)) 2250 if (expect_false (getpid () != curpid))
1748 { 2251 {
1749 curpid = getpid (); 2252 curpid = getpid ();
… …
1755 /* we might have forked, so queue fork handlers */ 2258 /* we might have forked, so queue fork handlers */
1756 if (expect_false (postfork)) 2259 if (expect_false (postfork))
1757 if (forkcnt) 2260 if (forkcnt)
1758 { 2261 {
1759 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1760 call_pending (EV_A); 2263 EV_INVOKE_PENDING;
1761 } 2264 }
1762#endif 2265#endif
1763 2266
1764 /* queue prepare watchers (and execute them) */ 2267 /* queue prepare watchers (and execute them) */
1765 if (expect_false (preparecnt)) 2268 if (expect_false (preparecnt))
1766 { 2269 {
1767 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1768 call_pending (EV_A); 2271 EV_INVOKE_PENDING;
1769 } 2272 }
1770 2273
1771 if (expect_false (!activecnt)) 2274 if (expect_false (loop_done))
1772 break; 2275 break;
1773 2276
1774 /* we might have forked, so reify kernel state if necessary */ 2277 /* we might have forked, so reify kernel state if necessary */
1775 if (expect_false (postfork)) 2278 if (expect_false (postfork))
1776 loop_fork (EV_A); 2279 loop_fork (EV_A);
… …
1783 ev_tstamp waittime = 0.; 2286 ev_tstamp waittime = 0.;
1784 ev_tstamp sleeptime = 0.; 2287 ev_tstamp sleeptime = 0.;
1785 2288
1786 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1787 { 2290 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
1788 /* update time to cancel out callback processing overhead */ 2294 /* update time to cancel out callback processing overhead */
1789 time_update (EV_A_ 1e100); 2295 time_update (EV_A_ 1e100);
1790 2296
1791 waittime = MAX_BLOCKTIME; 2297 waittime = MAX_BLOCKTIME;
1792 2298
1793 if (timercnt) 2299 if (timercnt)
1794 { 2300 {
1795 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1796 if (waittime > to) waittime = to; 2302 if (waittime > to) waittime = to;
1797 } 2303 }
1798 2304
1799#if EV_PERIODIC_ENABLE 2305#if EV_PERIODIC_ENABLE
1800 if (periodiccnt) 2306 if (periodiccnt)
1801 { 2307 {
1802 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1803 if (waittime > to) waittime = to; 2309 if (waittime > to) waittime = to;
1804 } 2310 }
1805#endif 2311#endif
1806 2312
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */
1807 if (expect_false (waittime < timeout_blocktime)) 2314 if (expect_false (waittime < timeout_blocktime))
1808 waittime = timeout_blocktime; 2315 waittime = timeout_blocktime;
1809 2316
1810 sleeptime = waittime - backend_fudge; 2317 /* extra check because io_blocktime is commonly 0 */
1811
1812 if (expect_true (sleeptime > io_blocktime)) 2318 if (expect_false (io_blocktime))
1813 sleeptime = io_blocktime;
1814
1815 if (sleeptime)
1816 { 2319 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321
2322 if (sleeptime > waittime - backend_fudge)
2323 sleeptime = waittime - backend_fudge;
2324
2325 if (expect_true (sleeptime > 0.))
2326 {
1817 ev_sleep (sleeptime); 2327 ev_sleep (sleeptime);
1818 waittime -= sleeptime; 2328 waittime -= sleeptime;
2329 }
1819 } 2330 }
1820 } 2331 }
1821 2332
2333#if EV_MINIMAL < 2
1822 ++loop_count; 2334 ++loop_count;
2335#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1823 backend_poll (EV_A_ waittime); 2337 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1824 2339
1825 /* update ev_rt_now, do magic */ 2340 /* update ev_rt_now, do magic */
1826 time_update (EV_A_ waittime + sleeptime); 2341 time_update (EV_A_ waittime + sleeptime);
1827 } 2342 }
1828 2343
… …
1839 2354
1840 /* queue check watchers, to be executed first */ 2355 /* queue check watchers, to be executed first */
1841 if (expect_false (checkcnt)) 2356 if (expect_false (checkcnt))
1842 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1843 2358
1844 call_pending (EV_A); 2359 EV_INVOKE_PENDING;
1845 } 2360 }
1846 while (expect_true ( 2361 while (expect_true (
1847 activecnt 2362 activecnt
1848 && !loop_done 2363 && !loop_done
1849 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1850 )); 2365 ));
1851 2366
1852 if (loop_done == EVUNLOOP_ONE) 2367 if (loop_done == EVUNLOOP_ONE)
1853 loop_done = EVUNLOOP_CANCEL; 2368 loop_done = EVUNLOOP_CANCEL;
2369
2370#if EV_MINIMAL < 2
2371 --loop_depth;
2372#endif
1854} 2373}
1855 2374
1856void 2375void
1857ev_unloop (EV_P_ int how) 2376ev_unloop (EV_P_ int how)
1858{ 2377{
1859 loop_done = how; 2378 loop_done = how;
1860} 2379}
1861 2380
2381void
2382ev_ref (EV_P)
2383{
2384 ++activecnt;
2385}
2386
2387void
2388ev_unref (EV_P)
2389{
2390 --activecnt;
2391}
2392
2393void
2394ev_now_update (EV_P)
2395{
2396 time_update (EV_A_ 1e100);
2397}
2398
2399void
2400ev_suspend (EV_P)
2401{
2402 ev_now_update (EV_A);
2403}
2404
2405void
2406ev_resume (EV_P)
2407{
2408 ev_tstamp mn_prev = mn_now;
2409
2410 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev);
2412#if EV_PERIODIC_ENABLE
2413 /* TODO: really do this? */
2414 periodics_reschedule (EV_A);
2415#endif
2416}
2417
1862/*****************************************************************************/ 2418/*****************************************************************************/
2419/* singly-linked list management, used when the expected list length is short */
1863 2420
1864void inline_size 2421inline_size void
1865wlist_add (WL *head, WL elem) 2422wlist_add (WL *head, WL elem)
1866{ 2423{
1867 elem->next = *head; 2424 elem->next = *head;
1868 *head = elem; 2425 *head = elem;
1869} 2426}
1870 2427
1871void inline_size 2428inline_size void
1872wlist_del (WL *head, WL elem) 2429wlist_del (WL *head, WL elem)
1873{ 2430{
1874 while (*head) 2431 while (*head)
1875 { 2432 {
1876 if (*head == elem) 2433 if (expect_true (*head == elem))
1877 { 2434 {
1878 *head = elem->next; 2435 *head = elem->next;
1879 return; 2436 break;
1880 } 2437 }
1881 2438
1882 head = &(*head)->next; 2439 head = &(*head)->next;
1883 } 2440 }
1884} 2441}
1885 2442
1886void inline_speed 2443/* internal, faster, version of ev_clear_pending */
2444inline_speed void
1887clear_pending (EV_P_ W w) 2445clear_pending (EV_P_ W w)
1888{ 2446{
1889 if (w->pending) 2447 if (w->pending)
1890 { 2448 {
1891 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2449 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1892 w->pending = 0; 2450 w->pending = 0;
1893 } 2451 }
1894} 2452}
1895 2453
1896int 2454int
… …
1900 int pending = w_->pending; 2458 int pending = w_->pending;
1901 2459
1902 if (expect_true (pending)) 2460 if (expect_true (pending))
1903 { 2461 {
1904 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2462 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2463 p->w = (W)&pending_w;
1905 w_->pending = 0; 2464 w_->pending = 0;
1906 p->w = 0;
1907 return p->events; 2465 return p->events;
1908 } 2466 }
1909 else 2467 else
1910 return 0; 2468 return 0;
1911} 2469}
1912 2470
1913void inline_size 2471inline_size void
1914pri_adjust (EV_P_ W w) 2472pri_adjust (EV_P_ W w)
1915{ 2473{
1916 int pri = w->priority; 2474 int pri = ev_priority (w);
1917 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2475 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2476 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919 w->priority = pri; 2477 ev_set_priority (w, pri);
1920} 2478}
1921 2479
1922void inline_speed 2480inline_speed void
1923ev_start (EV_P_ W w, int active) 2481ev_start (EV_P_ W w, int active)
1924{ 2482{
1925 pri_adjust (EV_A_ w); 2483 pri_adjust (EV_A_ w);
1926 w->active = active; 2484 w->active = active;
1927 ev_ref (EV_A); 2485 ev_ref (EV_A);
1928} 2486}
1929 2487
1930void inline_size 2488inline_size void
1931ev_stop (EV_P_ W w) 2489ev_stop (EV_P_ W w)
1932{ 2490{
1933 ev_unref (EV_A); 2491 ev_unref (EV_A);
1934 w->active = 0; 2492 w->active = 0;
1935} 2493}
… …
1942 int fd = w->fd; 2500 int fd = w->fd;
1943 2501
1944 if (expect_false (ev_is_active (w))) 2502 if (expect_false (ev_is_active (w)))
1945 return; 2503 return;
1946 2504
1947 assert (("ev_io_start called with negative fd", fd >= 0)); 2505 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507
2508 EV_FREQUENT_CHECK;
1948 2509
1949 ev_start (EV_A_ (W)w, 1); 2510 ev_start (EV_A_ (W)w, 1);
1950 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1951 wlist_add (&anfds[fd].head, (WL)w); 2512 wlist_add (&anfds[fd].head, (WL)w);
1952 2513
1953 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1954 w->events &= ~EV_IOFDSET; 2515 w->events &= ~EV__IOFDSET;
2516
2517 EV_FREQUENT_CHECK;
1955} 2518}
1956 2519
1957void noinline 2520void noinline
1958ev_io_stop (EV_P_ ev_io *w) 2521ev_io_stop (EV_P_ ev_io *w)
1959{ 2522{
1960 clear_pending (EV_A_ (W)w); 2523 clear_pending (EV_A_ (W)w);
1961 if (expect_false (!ev_is_active (w))) 2524 if (expect_false (!ev_is_active (w)))
1962 return; 2525 return;
1963 2526
1964 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2527 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2528
2529 EV_FREQUENT_CHECK;
1965 2530
1966 wlist_del (&anfds[w->fd].head, (WL)w); 2531 wlist_del (&anfds[w->fd].head, (WL)w);
1967 ev_stop (EV_A_ (W)w); 2532 ev_stop (EV_A_ (W)w);
1968 2533
1969 fd_change (EV_A_ w->fd, 1); 2534 fd_change (EV_A_ w->fd, 1);
2535
2536 EV_FREQUENT_CHECK;
1970} 2537}
1971 2538
1972void noinline 2539void noinline
1973ev_timer_start (EV_P_ ev_timer *w) 2540ev_timer_start (EV_P_ ev_timer *w)
1974{ 2541{
1975 if (expect_false (ev_is_active (w))) 2542 if (expect_false (ev_is_active (w)))
1976 return; 2543 return;
1977 2544
1978 ev_at (w) += mn_now; 2545 ev_at (w) += mn_now;
1979 2546
1980 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2547 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1981 2548
2549 EV_FREQUENT_CHECK;
2550
2551 ++timercnt;
1982 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2552 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1983 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2553 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1984 timers [ev_active (w)] = (WT)w; 2554 ANHE_w (timers [ev_active (w)]) = (WT)w;
2555 ANHE_at_cache (timers [ev_active (w)]);
1985 upheap (timers, ev_active (w)); 2556 upheap (timers, ev_active (w));
1986 2557
2558 EV_FREQUENT_CHECK;
2559
1987 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1988} 2561}
1989 2562
1990void noinline 2563void noinline
1991ev_timer_stop (EV_P_ ev_timer *w) 2564ev_timer_stop (EV_P_ ev_timer *w)
1992{ 2565{
1993 clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
1994 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
1995 return; 2568 return;
1996 2569
2570 EV_FREQUENT_CHECK;
2571
1997 { 2572 {
1998 int active = ev_active (w); 2573 int active = ev_active (w);
1999 2574
2000 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2575 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2001 2576
2577 --timercnt;
2578
2002 if (expect_true (active < timercnt + HEAP0 - 1)) 2579 if (expect_true (active < timercnt + HEAP0))
2003 { 2580 {
2004 timers [active] = timers [timercnt + HEAP0 - 1]; 2581 timers [active] = timers [timercnt + HEAP0];
2005 adjustheap (timers, timercnt, active); 2582 adjustheap (timers, timercnt, active);
2006 } 2583 }
2007
2008 --timercnt;
2009 } 2584 }
2585
2586 EV_FREQUENT_CHECK;
2010 2587
2011 ev_at (w) -= mn_now; 2588 ev_at (w) -= mn_now;
2012 2589
2013 ev_stop (EV_A_ (W)w); 2590 ev_stop (EV_A_ (W)w);
2014} 2591}
2015 2592
2016void noinline 2593void noinline
2017ev_timer_again (EV_P_ ev_timer *w) 2594ev_timer_again (EV_P_ ev_timer *w)
2018{ 2595{
2596 EV_FREQUENT_CHECK;
2597
2019 if (ev_is_active (w)) 2598 if (ev_is_active (w))
2020 { 2599 {
2021 if (w->repeat) 2600 if (w->repeat)
2022 { 2601 {
2023 ev_at (w) = mn_now + w->repeat; 2602 ev_at (w) = mn_now + w->repeat;
2603 ANHE_at_cache (timers [ev_active (w)]);
2024 adjustheap (timers, timercnt, ev_active (w)); 2604 adjustheap (timers, timercnt, ev_active (w));
2025 } 2605 }
2026 else 2606 else
2027 ev_timer_stop (EV_A_ w); 2607 ev_timer_stop (EV_A_ w);
2028 } 2608 }
2029 else if (w->repeat) 2609 else if (w->repeat)
2030 { 2610 {
2031 ev_at (w) = w->repeat; 2611 ev_at (w) = w->repeat;
2032 ev_timer_start (EV_A_ w); 2612 ev_timer_start (EV_A_ w);
2033 } 2613 }
2614
2615 EV_FREQUENT_CHECK;
2616}
2617
2618ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w)
2620{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2034} 2622}
2035 2623
2036#if EV_PERIODIC_ENABLE 2624#if EV_PERIODIC_ENABLE
2037void noinline 2625void noinline
2038ev_periodic_start (EV_P_ ev_periodic *w) 2626ev_periodic_start (EV_P_ ev_periodic *w)
… …
2042 2630
2043 if (w->reschedule_cb) 2631 if (w->reschedule_cb)
2044 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2045 else if (w->interval) 2633 else if (w->interval)
2046 { 2634 {
2047 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2048 /* this formula differs from the one in periodic_reify because we do not always round up */ 2636 /* this formula differs from the one in periodic_reify because we do not always round up */
2049 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2050 } 2638 }
2051 else 2639 else
2052 ev_at (w) = w->offset; 2640 ev_at (w) = w->offset;
2053 2641
2642 EV_FREQUENT_CHECK;
2643
2644 ++periodiccnt;
2054 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2645 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2055 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2646 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2056 periodics [ev_active (w)] = (WT)w; 2647 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2648 ANHE_at_cache (periodics [ev_active (w)]);
2057 upheap (periodics, ev_active (w)); 2649 upheap (periodics, ev_active (w));
2058 2650
2651 EV_FREQUENT_CHECK;
2652
2059 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2060} 2654}
2061 2655
2062void noinline 2656void noinline
2063ev_periodic_stop (EV_P_ ev_periodic *w) 2657ev_periodic_stop (EV_P_ ev_periodic *w)
2064{ 2658{
2065 clear_pending (EV_A_ (W)w); 2659 clear_pending (EV_A_ (W)w);
2066 if (expect_false (!ev_is_active (w))) 2660 if (expect_false (!ev_is_active (w)))
2067 return; 2661 return;
2068 2662
2663 EV_FREQUENT_CHECK;
2664
2069 { 2665 {
2070 int active = ev_active (w); 2666 int active = ev_active (w);
2071 2667
2072 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2668 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2073 2669
2670 --periodiccnt;
2671
2074 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2672 if (expect_true (active < periodiccnt + HEAP0))
2075 { 2673 {
2076 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2674 periodics [active] = periodics [periodiccnt + HEAP0];
2077 adjustheap (periodics, periodiccnt, active); 2675 adjustheap (periodics, periodiccnt, active);
2078 } 2676 }
2079
2080 --periodiccnt;
2081 } 2677 }
2678
2679 EV_FREQUENT_CHECK;
2082 2680
2083 ev_stop (EV_A_ (W)w); 2681 ev_stop (EV_A_ (W)w);
2084} 2682}
2085 2683
2086void noinline 2684void noinline
… …
2097#endif 2695#endif
2098 2696
2099void noinline 2697void noinline
2100ev_signal_start (EV_P_ ev_signal *w) 2698ev_signal_start (EV_P_ ev_signal *w)
2101{ 2699{
2102#if EV_MULTIPLICITY
2103 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2104#endif
2105 if (expect_false (ev_is_active (w))) 2700 if (expect_false (ev_is_active (w)))
2106 return; 2701 return;
2107 2702
2108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2109 2704
2110 evpipe_init (EV_A); 2705#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2111 2708
2709 signals [w->signum - 1].loop = EV_A;
2710#endif
2711
2712 EV_FREQUENT_CHECK;
2713
2714#if EV_USE_SIGNALFD
2715 if (sigfd == -2)
2112 { 2716 {
2113#ifndef _WIN32 2717 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2114 sigset_t full, prev; 2718 if (sigfd < 0 && errno == EINVAL)
2115 sigfillset (&full); 2719 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2116 sigprocmask (SIG_SETMASK, &full, &prev);
2117#endif
2118 2720
2119 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2721 if (sigfd >= 0)
2722 {
2723 fd_intern (sigfd); /* doing it twice will not hurt */
2120 2724
2121#ifndef _WIN32 2725 sigemptyset (&sigfd_set);
2122 sigprocmask (SIG_SETMASK, &prev, 0); 2726
2123#endif 2727 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2728 ev_set_priority (&sigfd_w, EV_MAXPRI);
2729 ev_io_start (EV_A_ &sigfd_w);
2730 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2731 }
2124 } 2732 }
2733
2734 if (sigfd >= 0)
2735 {
2736 /* TODO: check .head */
2737 sigaddset (&sigfd_set, w->signum);
2738 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2739
2740 signalfd (sigfd, &sigfd_set, 0);
2741 }
2742#endif
2125 2743
2126 ev_start (EV_A_ (W)w, 1); 2744 ev_start (EV_A_ (W)w, 1);
2127 wlist_add (&signals [w->signum - 1].head, (WL)w); 2745 wlist_add (&signals [w->signum - 1].head, (WL)w);
2128 2746
2129 if (!((WL)w)->next) 2747 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/
2750# endif
2130 { 2751 {
2131#if _WIN32 2752# ifdef _WIN32
2753 evpipe_init (EV_A);
2754
2132 signal (w->signum, ev_sighandler); 2755 signal (w->signum, ev_sighandler);
2133#else 2756# else
2134 struct sigaction sa; 2757 struct sigaction sa;
2758
2759 evpipe_init (EV_A);
2760
2135 sa.sa_handler = ev_sighandler; 2761 sa.sa_handler = ev_sighandler;
2136 sigfillset (&sa.sa_mask); 2762 sigfillset (&sa.sa_mask);
2137 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2138 sigaction (w->signum, &sa, 0); 2764 sigaction (w->signum, &sa, 0);
2765
2766 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2139#endif 2769#endif
2140 } 2770 }
2771
2772 EV_FREQUENT_CHECK;
2141} 2773}
2142 2774
2143void noinline 2775void noinline
2144ev_signal_stop (EV_P_ ev_signal *w) 2776ev_signal_stop (EV_P_ ev_signal *w)
2145{ 2777{
2146 clear_pending (EV_A_ (W)w); 2778 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 2779 if (expect_false (!ev_is_active (w)))
2148 return; 2780 return;
2149 2781
2782 EV_FREQUENT_CHECK;
2783
2150 wlist_del (&signals [w->signum - 1].head, (WL)w); 2784 wlist_del (&signals [w->signum - 1].head, (WL)w);
2151 ev_stop (EV_A_ (W)w); 2785 ev_stop (EV_A_ (W)w);
2152 2786
2153 if (!signals [w->signum - 1].head) 2787 if (!signals [w->signum - 1].head)
2788 {
2789#if EV_MULTIPLICITY
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif
2792#if EV_USE_SIGNALFD
2793 if (sigfd >= 0)
2794 {
2795 sigset_t ss;
2796
2797 sigemptyset (&ss);
2798 sigaddset (&ss, w->signum);
2799 sigdelset (&sigfd_set, w->signum);
2800
2801 signalfd (sigfd, &sigfd_set, 0);
2802 sigprocmask (SIG_UNBLOCK, &ss, 0);
2803 }
2804 else
2805#endif
2154 signal (w->signum, SIG_DFL); 2806 signal (w->signum, SIG_DFL);
2807 }
2808
2809 EV_FREQUENT_CHECK;
2155} 2810}
2156 2811
2157void 2812void
2158ev_child_start (EV_P_ ev_child *w) 2813ev_child_start (EV_P_ ev_child *w)
2159{ 2814{
2160#if EV_MULTIPLICITY 2815#if EV_MULTIPLICITY
2161 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2162#endif 2817#endif
2163 if (expect_false (ev_is_active (w))) 2818 if (expect_false (ev_is_active (w)))
2164 return; 2819 return;
2165 2820
2821 EV_FREQUENT_CHECK;
2822
2166 ev_start (EV_A_ (W)w, 1); 2823 ev_start (EV_A_ (W)w, 1);
2167 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2825
2826 EV_FREQUENT_CHECK;
2168} 2827}
2169 2828
2170void 2829void
2171ev_child_stop (EV_P_ ev_child *w) 2830ev_child_stop (EV_P_ ev_child *w)
2172{ 2831{
2173 clear_pending (EV_A_ (W)w); 2832 clear_pending (EV_A_ (W)w);
2174 if (expect_false (!ev_is_active (w))) 2833 if (expect_false (!ev_is_active (w)))
2175 return; 2834 return;
2176 2835
2836 EV_FREQUENT_CHECK;
2837
2177 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2178 ev_stop (EV_A_ (W)w); 2839 ev_stop (EV_A_ (W)w);
2840
2841 EV_FREQUENT_CHECK;
2179} 2842}
2180 2843
2181#if EV_STAT_ENABLE 2844#if EV_STAT_ENABLE
2182 2845
2183# ifdef _WIN32 2846# ifdef _WIN32
2184# undef lstat 2847# undef lstat
2185# define lstat(a,b) _stati64 (a,b) 2848# define lstat(a,b) _stati64 (a,b)
2186# endif 2849# endif
2187 2850
2188#define DEF_STAT_INTERVAL 5.0074891 2851#define DEF_STAT_INTERVAL 5.0074891
2852#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2189#define MIN_STAT_INTERVAL 0.1074891 2853#define MIN_STAT_INTERVAL 0.1074891
2190 2854
2191static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192 2856
2193#if EV_USE_INOTIFY 2857#if EV_USE_INOTIFY
2194# define EV_INOTIFY_BUFSIZE 8192 2858# define EV_INOTIFY_BUFSIZE 8192
… …
2196static void noinline 2860static void noinline
2197infy_add (EV_P_ ev_stat *w) 2861infy_add (EV_P_ ev_stat *w)
2198{ 2862{
2199 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); 2863 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);
2200 2864
2201 if (w->wd < 0) 2865 if (w->wd >= 0)
2866 {
2867 struct statfs sfs;
2868
2869 /* now local changes will be tracked by inotify, but remote changes won't */
2870 /* unless the filesystem is known to be local, we therefore still poll */
2871 /* also do poll on <2.6.25, but with normal frequency */
2872
2873 if (!fs_2625)
2874 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2875 else if (!statfs (w->path, &sfs)
2876 && (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */))
2882 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2883 else
2884 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2202 { 2885 }
2203 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2886 else
2887 {
2888 /* can't use inotify, continue to stat */
2889 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2204 2890
2205 /* monitor some parent directory for speedup hints */ 2891 /* if path is not there, monitor some parent directory for speedup hints */
2206 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2892 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2207 /* but an efficiency issue only */ 2893 /* but an efficiency issue only */
2208 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2894 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209 { 2895 {
2210 char path [4096]; 2896 char path [4096];
2211 strcpy (path, w->path); 2897 strcpy (path, w->path);
… …
2215 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2901 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2902 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217 2903
2218 char *pend = strrchr (path, '/'); 2904 char *pend = strrchr (path, '/');
2219 2905
2220 if (!pend) 2906 if (!pend || pend == path)
2221 break; /* whoops, no '/', complain to your admin */ 2907 break;
2222 2908
2223 *pend = 0; 2909 *pend = 0;
2224 w->wd = inotify_add_watch (fs_fd, path, mask); 2910 w->wd = inotify_add_watch (fs_fd, path, mask);
2225 } 2911 }
2226 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227 } 2913 }
2228 } 2914 }
2229 else
2230 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231 2915
2232 if (w->wd >= 0) 2916 if (w->wd >= 0)
2233 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2918
2919 /* now re-arm timer, if required */
2920 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2921 ev_timer_again (EV_A_ &w->timer);
2922 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2234} 2923}
2235 2924
2236static void noinline 2925static void noinline
2237infy_del (EV_P_ ev_stat *w) 2926infy_del (EV_P_ ev_stat *w)
2238{ 2927{
… …
2252 2941
2253static void noinline 2942static void noinline
2254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2943infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255{ 2944{
2256 if (slot < 0) 2945 if (slot < 0)
2257 /* overflow, need to check for all hahs slots */ 2946 /* overflow, need to check for all hash slots */
2258 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259 infy_wd (EV_A_ slot, wd, ev); 2948 infy_wd (EV_A_ slot, wd, ev);
2260 else 2949 else
2261 { 2950 {
2262 WL w_; 2951 WL w_;
… …
2268 2957
2269 if (w->wd == wd || wd == -1) 2958 if (w->wd == wd || wd == -1)
2270 { 2959 {
2271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2960 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272 { 2961 {
2962 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2273 w->wd = -1; 2963 w->wd = -1;
2274 infy_add (EV_A_ w); /* re-add, no matter what */ 2964 infy_add (EV_A_ w); /* re-add, no matter what */
2275 } 2965 }
2276 2966
2277 stat_timer_cb (EV_A_ &w->timer, 0); 2967 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2290 2980
2291 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2981 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2982 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293} 2983}
2294 2984
2295void inline_size 2985inline_size void
2986check_2625 (EV_P)
2987{
2988 /* kernels < 2.6.25 are borked
2989 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2990 */
2991 struct utsname buf;
2992 int major, minor, micro;
2993
2994 if (uname (&buf))
2995 return;
2996
2997 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2998 return;
2999
3000 if (major < 2
3001 || (major == 2 && minor < 6)
3002 || (major == 2 && minor == 6 && micro < 25))
3003 return;
3004
3005 fs_2625 = 1;
3006}
3007
3008inline_size int
3009infy_newfd (void)
3010{
3011#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3012 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3013 if (fd >= 0)
3014 return fd;
3015#endif
3016 return inotify_init ();
3017}
3018
3019inline_size void
2296infy_init (EV_P) 3020infy_init (EV_P)
2297{ 3021{
2298 if (fs_fd != -2) 3022 if (fs_fd != -2)
2299 return; 3023 return;
2300 3024
3025 fs_fd = -1;
3026
3027 check_2625 (EV_A);
3028
2301 fs_fd = inotify_init (); 3029 fs_fd = infy_newfd ();
2302 3030
2303 if (fs_fd >= 0) 3031 if (fs_fd >= 0)
2304 { 3032 {
3033 fd_intern (fs_fd);
2305 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3034 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2306 ev_set_priority (&fs_w, EV_MAXPRI); 3035 ev_set_priority (&fs_w, EV_MAXPRI);
2307 ev_io_start (EV_A_ &fs_w); 3036 ev_io_start (EV_A_ &fs_w);
3037 ev_unref (EV_A);
2308 } 3038 }
2309} 3039}
2310 3040
2311void inline_size 3041inline_size void
2312infy_fork (EV_P) 3042infy_fork (EV_P)
2313{ 3043{
2314 int slot; 3044 int slot;
2315 3045
2316 if (fs_fd < 0) 3046 if (fs_fd < 0)
2317 return; 3047 return;
2318 3048
3049 ev_ref (EV_A);
3050 ev_io_stop (EV_A_ &fs_w);
2319 close (fs_fd); 3051 close (fs_fd);
2320 fs_fd = inotify_init (); 3052 fs_fd = infy_newfd ();
3053
3054 if (fs_fd >= 0)
3055 {
3056 fd_intern (fs_fd);
3057 ev_io_set (&fs_w, fs_fd, EV_READ);
3058 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A);
3060 }
2321 3061
2322 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2323 { 3063 {
2324 WL w_ = fs_hash [slot].head; 3064 WL w_ = fs_hash [slot].head;
2325 fs_hash [slot].head = 0; 3065 fs_hash [slot].head = 0;
… …
2332 w->wd = -1; 3072 w->wd = -1;
2333 3073
2334 if (fs_fd >= 0) 3074 if (fs_fd >= 0)
2335 infy_add (EV_A_ w); /* re-add, no matter what */ 3075 infy_add (EV_A_ w); /* re-add, no matter what */
2336 else 3076 else
3077 {
3078 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3079 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2337 ev_timer_start (EV_A_ &w->timer); 3080 ev_timer_again (EV_A_ &w->timer);
3081 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3082 }
2338 } 3083 }
2339
2340 } 3084 }
2341} 3085}
2342 3086
3087#endif
3088
3089#ifdef _WIN32
3090# define EV_LSTAT(p,b) _stati64 (p, b)
3091#else
3092# define EV_LSTAT(p,b) lstat (p, b)
2343#endif 3093#endif
2344 3094
2345void 3095void
2346ev_stat_stat (EV_P_ ev_stat *w) 3096ev_stat_stat (EV_P_ ev_stat *w)
2347{ 3097{
… …
2354static void noinline 3104static void noinline
2355stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3105stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2356{ 3106{
2357 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3107 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2358 3108
2359 /* we copy this here each the time so that */ 3109 ev_statdata prev = w->attr;
2360 /* prev has the old value when the callback gets invoked */
2361 w->prev = w->attr;
2362 ev_stat_stat (EV_A_ w); 3110 ev_stat_stat (EV_A_ w);
2363 3111
2364 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3112 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2365 if ( 3113 if (
2366 w->prev.st_dev != w->attr.st_dev 3114 prev.st_dev != w->attr.st_dev
2367 || w->prev.st_ino != w->attr.st_ino 3115 || prev.st_ino != w->attr.st_ino
2368 || w->prev.st_mode != w->attr.st_mode 3116 || prev.st_mode != w->attr.st_mode
2369 || w->prev.st_nlink != w->attr.st_nlink 3117 || prev.st_nlink != w->attr.st_nlink
2370 || w->prev.st_uid != w->attr.st_uid 3118 || prev.st_uid != w->attr.st_uid
2371 || w->prev.st_gid != w->attr.st_gid 3119 || prev.st_gid != w->attr.st_gid
2372 || w->prev.st_rdev != w->attr.st_rdev 3120 || prev.st_rdev != w->attr.st_rdev
2373 || w->prev.st_size != w->attr.st_size 3121 || prev.st_size != w->attr.st_size
2374 || w->prev.st_atime != w->attr.st_atime 3122 || prev.st_atime != w->attr.st_atime
2375 || w->prev.st_mtime != w->attr.st_mtime 3123 || prev.st_mtime != w->attr.st_mtime
2376 || w->prev.st_ctime != w->attr.st_ctime 3124 || prev.st_ctime != w->attr.st_ctime
2377 ) { 3125 ) {
3126 /* we only update w->prev on actual differences */
3127 /* in case we test more often than invoke the callback, */
3128 /* to ensure that prev is always different to attr */
3129 w->prev = prev;
3130
2378 #if EV_USE_INOTIFY 3131 #if EV_USE_INOTIFY
3132 if (fs_fd >= 0)
3133 {
2379 infy_del (EV_A_ w); 3134 infy_del (EV_A_ w);
2380 infy_add (EV_A_ w); 3135 infy_add (EV_A_ w);
2381 ev_stat_stat (EV_A_ w); /* avoid race... */ 3136 ev_stat_stat (EV_A_ w); /* avoid race... */
3137 }
2382 #endif 3138 #endif
2383 3139
2384 ev_feed_event (EV_A_ w, EV_STAT); 3140 ev_feed_event (EV_A_ w, EV_STAT);
2385 } 3141 }
2386} 3142}
… …
2389ev_stat_start (EV_P_ ev_stat *w) 3145ev_stat_start (EV_P_ ev_stat *w)
2390{ 3146{
2391 if (expect_false (ev_is_active (w))) 3147 if (expect_false (ev_is_active (w)))
2392 return; 3148 return;
2393 3149
2394 /* since we use memcmp, we need to clear any padding data etc. */
2395 memset (&w->prev, 0, sizeof (ev_statdata));
2396 memset (&w->attr, 0, sizeof (ev_statdata));
2397
2398 ev_stat_stat (EV_A_ w); 3150 ev_stat_stat (EV_A_ w);
2399 3151
3152 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2400 if (w->interval < MIN_STAT_INTERVAL) 3153 w->interval = MIN_STAT_INTERVAL;
2401 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402 3154
2403 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3155 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2404 ev_set_priority (&w->timer, ev_priority (w)); 3156 ev_set_priority (&w->timer, ev_priority (w));
2405 3157
2406#if EV_USE_INOTIFY 3158#if EV_USE_INOTIFY
2407 infy_init (EV_A); 3159 infy_init (EV_A);
2408 3160
2409 if (fs_fd >= 0) 3161 if (fs_fd >= 0)
2410 infy_add (EV_A_ w); 3162 infy_add (EV_A_ w);
2411 else 3163 else
2412#endif 3164#endif
3165 {
2413 ev_timer_start (EV_A_ &w->timer); 3166 ev_timer_again (EV_A_ &w->timer);
3167 ev_unref (EV_A);
3168 }
2414 3169
2415 ev_start (EV_A_ (W)w, 1); 3170 ev_start (EV_A_ (W)w, 1);
3171
3172 EV_FREQUENT_CHECK;
2416} 3173}
2417 3174
2418void 3175void
2419ev_stat_stop (EV_P_ ev_stat *w) 3176ev_stat_stop (EV_P_ ev_stat *w)
2420{ 3177{
2421 clear_pending (EV_A_ (W)w); 3178 clear_pending (EV_A_ (W)w);
2422 if (expect_false (!ev_is_active (w))) 3179 if (expect_false (!ev_is_active (w)))
2423 return; 3180 return;
2424 3181
3182 EV_FREQUENT_CHECK;
3183
2425#if EV_USE_INOTIFY 3184#if EV_USE_INOTIFY
2426 infy_del (EV_A_ w); 3185 infy_del (EV_A_ w);
2427#endif 3186#endif
3187
3188 if (ev_is_active (&w->timer))
3189 {
3190 ev_ref (EV_A);
2428 ev_timer_stop (EV_A_ &w->timer); 3191 ev_timer_stop (EV_A_ &w->timer);
3192 }
2429 3193
2430 ev_stop (EV_A_ (W)w); 3194 ev_stop (EV_A_ (W)w);
3195
3196 EV_FREQUENT_CHECK;
2431} 3197}
2432#endif 3198#endif
2433 3199
2434#if EV_IDLE_ENABLE 3200#if EV_IDLE_ENABLE
2435void 3201void
… …
2437{ 3203{
2438 if (expect_false (ev_is_active (w))) 3204 if (expect_false (ev_is_active (w)))
2439 return; 3205 return;
2440 3206
2441 pri_adjust (EV_A_ (W)w); 3207 pri_adjust (EV_A_ (W)w);
3208
3209 EV_FREQUENT_CHECK;
2442 3210
2443 { 3211 {
2444 int active = ++idlecnt [ABSPRI (w)]; 3212 int active = ++idlecnt [ABSPRI (w)];
2445 3213
2446 ++idleall; 3214 ++idleall;
2447 ev_start (EV_A_ (W)w, active); 3215 ev_start (EV_A_ (W)w, active);
2448 3216
2449 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3217 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450 idles [ABSPRI (w)][active - 1] = w; 3218 idles [ABSPRI (w)][active - 1] = w;
2451 } 3219 }
3220
3221 EV_FREQUENT_CHECK;
2452} 3222}
2453 3223
2454void 3224void
2455ev_idle_stop (EV_P_ ev_idle *w) 3225ev_idle_stop (EV_P_ ev_idle *w)
2456{ 3226{
2457 clear_pending (EV_A_ (W)w); 3227 clear_pending (EV_A_ (W)w);
2458 if (expect_false (!ev_is_active (w))) 3228 if (expect_false (!ev_is_active (w)))
2459 return; 3229 return;
2460 3230
3231 EV_FREQUENT_CHECK;
3232
2461 { 3233 {
2462 int active = ev_active (w); 3234 int active = ev_active (w);
2463 3235
2464 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3236 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3237 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466 3238
2467 ev_stop (EV_A_ (W)w); 3239 ev_stop (EV_A_ (W)w);
2468 --idleall; 3240 --idleall;
2469 } 3241 }
3242
3243 EV_FREQUENT_CHECK;
2470} 3244}
2471#endif 3245#endif
2472 3246
2473void 3247void
2474ev_prepare_start (EV_P_ ev_prepare *w) 3248ev_prepare_start (EV_P_ ev_prepare *w)
2475{ 3249{
2476 if (expect_false (ev_is_active (w))) 3250 if (expect_false (ev_is_active (w)))
2477 return; 3251 return;
3252
3253 EV_FREQUENT_CHECK;
2478 3254
2479 ev_start (EV_A_ (W)w, ++preparecnt); 3255 ev_start (EV_A_ (W)w, ++preparecnt);
2480 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3256 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481 prepares [preparecnt - 1] = w; 3257 prepares [preparecnt - 1] = w;
3258
3259 EV_FREQUENT_CHECK;
2482} 3260}
2483 3261
2484void 3262void
2485ev_prepare_stop (EV_P_ ev_prepare *w) 3263ev_prepare_stop (EV_P_ ev_prepare *w)
2486{ 3264{
2487 clear_pending (EV_A_ (W)w); 3265 clear_pending (EV_A_ (W)w);
2488 if (expect_false (!ev_is_active (w))) 3266 if (expect_false (!ev_is_active (w)))
2489 return; 3267 return;
2490 3268
3269 EV_FREQUENT_CHECK;
3270
2491 { 3271 {
2492 int active = ev_active (w); 3272 int active = ev_active (w);
2493 3273
2494 prepares [active - 1] = prepares [--preparecnt]; 3274 prepares [active - 1] = prepares [--preparecnt];
2495 ev_active (prepares [active - 1]) = active; 3275 ev_active (prepares [active - 1]) = active;
2496 } 3276 }
2497 3277
2498 ev_stop (EV_A_ (W)w); 3278 ev_stop (EV_A_ (W)w);
3279
3280 EV_FREQUENT_CHECK;
2499} 3281}
2500 3282
2501void 3283void
2502ev_check_start (EV_P_ ev_check *w) 3284ev_check_start (EV_P_ ev_check *w)
2503{ 3285{
2504 if (expect_false (ev_is_active (w))) 3286 if (expect_false (ev_is_active (w)))
2505 return; 3287 return;
3288
3289 EV_FREQUENT_CHECK;
2506 3290
2507 ev_start (EV_A_ (W)w, ++checkcnt); 3291 ev_start (EV_A_ (W)w, ++checkcnt);
2508 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3292 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509 checks [checkcnt - 1] = w; 3293 checks [checkcnt - 1] = w;
3294
3295 EV_FREQUENT_CHECK;
2510} 3296}
2511 3297
2512void 3298void
2513ev_check_stop (EV_P_ ev_check *w) 3299ev_check_stop (EV_P_ ev_check *w)
2514{ 3300{
2515 clear_pending (EV_A_ (W)w); 3301 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3302 if (expect_false (!ev_is_active (w)))
2517 return; 3303 return;
2518 3304
3305 EV_FREQUENT_CHECK;
3306
2519 { 3307 {
2520 int active = ev_active (w); 3308 int active = ev_active (w);
2521 3309
2522 checks [active - 1] = checks [--checkcnt]; 3310 checks [active - 1] = checks [--checkcnt];
2523 ev_active (checks [active - 1]) = active; 3311 ev_active (checks [active - 1]) = active;
2524 } 3312 }
2525 3313
2526 ev_stop (EV_A_ (W)w); 3314 ev_stop (EV_A_ (W)w);
3315
3316 EV_FREQUENT_CHECK;
2527} 3317}
2528 3318
2529#if EV_EMBED_ENABLE 3319#if EV_EMBED_ENABLE
2530void noinline 3320void noinline
2531ev_embed_sweep (EV_P_ ev_embed *w) 3321ev_embed_sweep (EV_P_ ev_embed *w)
… …
2548embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3338embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2549{ 3339{
2550 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3340 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2551 3341
2552 { 3342 {
2553 struct ev_loop *loop = w->other; 3343 EV_P = w->other;
2554 3344
2555 while (fdchangecnt) 3345 while (fdchangecnt)
2556 { 3346 {
2557 fd_reify (EV_A); 3347 fd_reify (EV_A);
2558 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3348 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559 } 3349 }
2560 } 3350 }
2561} 3351}
2562 3352
3353static void
3354embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3355{
3356 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3357
3358 ev_embed_stop (EV_A_ w);
3359
3360 {
3361 EV_P = w->other;
3362
3363 ev_loop_fork (EV_A);
3364 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3365 }
3366
3367 ev_embed_start (EV_A_ w);
3368}
3369
2563#if 0 3370#if 0
2564static void 3371static void
2565embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3372embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566{ 3373{
2567 ev_idle_stop (EV_A_ idle); 3374 ev_idle_stop (EV_A_ idle);
… …
2573{ 3380{
2574 if (expect_false (ev_is_active (w))) 3381 if (expect_false (ev_is_active (w)))
2575 return; 3382 return;
2576 3383
2577 { 3384 {
2578 struct ev_loop *loop = w->other; 3385 EV_P = w->other;
2579 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3386 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3387 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581 } 3388 }
3389
3390 EV_FREQUENT_CHECK;
2582 3391
2583 ev_set_priority (&w->io, ev_priority (w)); 3392 ev_set_priority (&w->io, ev_priority (w));
2584 ev_io_start (EV_A_ &w->io); 3393 ev_io_start (EV_A_ &w->io);
2585 3394
2586 ev_prepare_init (&w->prepare, embed_prepare_cb); 3395 ev_prepare_init (&w->prepare, embed_prepare_cb);
2587 ev_set_priority (&w->prepare, EV_MINPRI); 3396 ev_set_priority (&w->prepare, EV_MINPRI);
2588 ev_prepare_start (EV_A_ &w->prepare); 3397 ev_prepare_start (EV_A_ &w->prepare);
2589 3398
3399 ev_fork_init (&w->fork, embed_fork_cb);
3400 ev_fork_start (EV_A_ &w->fork);
3401
2590 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3402 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591 3403
2592 ev_start (EV_A_ (W)w, 1); 3404 ev_start (EV_A_ (W)w, 1);
3405
3406 EV_FREQUENT_CHECK;
2593} 3407}
2594 3408
2595void 3409void
2596ev_embed_stop (EV_P_ ev_embed *w) 3410ev_embed_stop (EV_P_ ev_embed *w)
2597{ 3411{
2598 clear_pending (EV_A_ (W)w); 3412 clear_pending (EV_A_ (W)w);
2599 if (expect_false (!ev_is_active (w))) 3413 if (expect_false (!ev_is_active (w)))
2600 return; 3414 return;
2601 3415
3416 EV_FREQUENT_CHECK;
3417
2602 ev_io_stop (EV_A_ &w->io); 3418 ev_io_stop (EV_A_ &w->io);
2603 ev_prepare_stop (EV_A_ &w->prepare); 3419 ev_prepare_stop (EV_A_ &w->prepare);
3420 ev_fork_stop (EV_A_ &w->fork);
2604 3421
2605 ev_stop (EV_A_ (W)w); 3422 EV_FREQUENT_CHECK;
2606} 3423}
2607#endif 3424#endif
2608 3425
2609#if EV_FORK_ENABLE 3426#if EV_FORK_ENABLE
2610void 3427void
2611ev_fork_start (EV_P_ ev_fork *w) 3428ev_fork_start (EV_P_ ev_fork *w)
2612{ 3429{
2613 if (expect_false (ev_is_active (w))) 3430 if (expect_false (ev_is_active (w)))
2614 return; 3431 return;
3432
3433 EV_FREQUENT_CHECK;
2615 3434
2616 ev_start (EV_A_ (W)w, ++forkcnt); 3435 ev_start (EV_A_ (W)w, ++forkcnt);
2617 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3436 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618 forks [forkcnt - 1] = w; 3437 forks [forkcnt - 1] = w;
3438
3439 EV_FREQUENT_CHECK;
2619} 3440}
2620 3441
2621void 3442void
2622ev_fork_stop (EV_P_ ev_fork *w) 3443ev_fork_stop (EV_P_ ev_fork *w)
2623{ 3444{
2624 clear_pending (EV_A_ (W)w); 3445 clear_pending (EV_A_ (W)w);
2625 if (expect_false (!ev_is_active (w))) 3446 if (expect_false (!ev_is_active (w)))
2626 return; 3447 return;
2627 3448
3449 EV_FREQUENT_CHECK;
3450
2628 { 3451 {
2629 int active = ev_active (w); 3452 int active = ev_active (w);
2630 3453
2631 forks [active - 1] = forks [--forkcnt]; 3454 forks [active - 1] = forks [--forkcnt];
2632 ev_active (forks [active - 1]) = active; 3455 ev_active (forks [active - 1]) = active;
2633 } 3456 }
2634 3457
2635 ev_stop (EV_A_ (W)w); 3458 ev_stop (EV_A_ (W)w);
3459
3460 EV_FREQUENT_CHECK;
2636} 3461}
2637#endif 3462#endif
2638 3463
2639#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
2640void 3465void
… …
2642{ 3467{
2643 if (expect_false (ev_is_active (w))) 3468 if (expect_false (ev_is_active (w)))
2644 return; 3469 return;
2645 3470
2646 evpipe_init (EV_A); 3471 evpipe_init (EV_A);
3472
3473 EV_FREQUENT_CHECK;
2647 3474
2648 ev_start (EV_A_ (W)w, ++asynccnt); 3475 ev_start (EV_A_ (W)w, ++asynccnt);
2649 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3476 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650 asyncs [asynccnt - 1] = w; 3477 asyncs [asynccnt - 1] = w;
3478
3479 EV_FREQUENT_CHECK;
2651} 3480}
2652 3481
2653void 3482void
2654ev_async_stop (EV_P_ ev_async *w) 3483ev_async_stop (EV_P_ ev_async *w)
2655{ 3484{
2656 clear_pending (EV_A_ (W)w); 3485 clear_pending (EV_A_ (W)w);
2657 if (expect_false (!ev_is_active (w))) 3486 if (expect_false (!ev_is_active (w)))
2658 return; 3487 return;
2659 3488
3489 EV_FREQUENT_CHECK;
3490
2660 { 3491 {
2661 int active = ev_active (w); 3492 int active = ev_active (w);
2662 3493
2663 asyncs [active - 1] = asyncs [--asynccnt]; 3494 asyncs [active - 1] = asyncs [--asynccnt];
2664 ev_active (asyncs [active - 1]) = active; 3495 ev_active (asyncs [active - 1]) = active;
2665 } 3496 }
2666 3497
2667 ev_stop (EV_A_ (W)w); 3498 ev_stop (EV_A_ (W)w);
3499
3500 EV_FREQUENT_CHECK;
2668} 3501}
2669 3502
2670void 3503void
2671ev_async_send (EV_P_ ev_async *w) 3504ev_async_send (EV_P_ ev_async *w)
2672{ 3505{
2673 w->sent = 1; 3506 w->sent = 1;
2674 evpipe_write (EV_A_ &gotasync); 3507 evpipe_write (EV_A_ &async_pending);
2675} 3508}
2676#endif 3509#endif
2677 3510
2678/*****************************************************************************/ 3511/*****************************************************************************/
2679 3512
… …
2689once_cb (EV_P_ struct ev_once *once, int revents) 3522once_cb (EV_P_ struct ev_once *once, int revents)
2690{ 3523{
2691 void (*cb)(int revents, void *arg) = once->cb; 3524 void (*cb)(int revents, void *arg) = once->cb;
2692 void *arg = once->arg; 3525 void *arg = once->arg;
2693 3526
2694 ev_io_stop (EV_A_ &once->io); 3527 ev_io_stop (EV_A_ &once->io);
2695 ev_timer_stop (EV_A_ &once->to); 3528 ev_timer_stop (EV_A_ &once->to);
2696 ev_free (once); 3529 ev_free (once);
2697 3530
2698 cb (revents, arg); 3531 cb (revents, arg);
2699} 3532}
2700 3533
2701static void 3534static void
2702once_cb_io (EV_P_ ev_io *w, int revents) 3535once_cb_io (EV_P_ ev_io *w, int revents)
2703{ 3536{
2704 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3537 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3538
3539 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2705} 3540}
2706 3541
2707static void 3542static void
2708once_cb_to (EV_P_ ev_timer *w, int revents) 3543once_cb_to (EV_P_ ev_timer *w, int revents)
2709{ 3544{
2710 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3545 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3546
3547 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2711} 3548}
2712 3549
2713void 3550void
2714ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3551ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2715{ 3552{
… …
2737 ev_timer_set (&once->to, timeout, 0.); 3574 ev_timer_set (&once->to, timeout, 0.);
2738 ev_timer_start (EV_A_ &once->to); 3575 ev_timer_start (EV_A_ &once->to);
2739 } 3576 }
2740} 3577}
2741 3578
3579/*****************************************************************************/
3580
3581#if EV_WALK_ENABLE
3582void
3583ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3584{
3585 int i, j;
3586 ev_watcher_list *wl, *wn;
3587
3588 if (types & (EV_IO | EV_EMBED))
3589 for (i = 0; i < anfdmax; ++i)
3590 for (wl = anfds [i].head; wl; )
3591 {
3592 wn = wl->next;
3593
3594#if EV_EMBED_ENABLE
3595 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3596 {
3597 if (types & EV_EMBED)
3598 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3599 }
3600 else
3601#endif
3602#if EV_USE_INOTIFY
3603 if (ev_cb ((ev_io *)wl) == infy_cb)
3604 ;
3605 else
3606#endif
3607 if ((ev_io *)wl != &pipe_w)
3608 if (types & EV_IO)
3609 cb (EV_A_ EV_IO, wl);
3610
3611 wl = wn;
3612 }
3613
3614 if (types & (EV_TIMER | EV_STAT))
3615 for (i = timercnt + HEAP0; i-- > HEAP0; )
3616#if EV_STAT_ENABLE
3617 /*TODO: timer is not always active*/
3618 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3619 {
3620 if (types & EV_STAT)
3621 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3622 }
3623 else
3624#endif
3625 if (types & EV_TIMER)
3626 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3627
3628#if EV_PERIODIC_ENABLE
3629 if (types & EV_PERIODIC)
3630 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3631 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3632#endif
3633
3634#if EV_IDLE_ENABLE
3635 if (types & EV_IDLE)
3636 for (j = NUMPRI; i--; )
3637 for (i = idlecnt [j]; i--; )
3638 cb (EV_A_ EV_IDLE, idles [j][i]);
3639#endif
3640
3641#if EV_FORK_ENABLE
3642 if (types & EV_FORK)
3643 for (i = forkcnt; i--; )
3644 if (ev_cb (forks [i]) != embed_fork_cb)
3645 cb (EV_A_ EV_FORK, forks [i]);
3646#endif
3647
3648#if EV_ASYNC_ENABLE
3649 if (types & EV_ASYNC)
3650 for (i = asynccnt; i--; )
3651 cb (EV_A_ EV_ASYNC, asyncs [i]);
3652#endif
3653
3654 if (types & EV_PREPARE)
3655 for (i = preparecnt; i--; )
3656#if EV_EMBED_ENABLE
3657 if (ev_cb (prepares [i]) != embed_prepare_cb)
3658#endif
3659 cb (EV_A_ EV_PREPARE, prepares [i]);
3660
3661 if (types & EV_CHECK)
3662 for (i = checkcnt; i--; )
3663 cb (EV_A_ EV_CHECK, checks [i]);
3664
3665 if (types & EV_SIGNAL)
3666 for (i = 0; i < EV_NSIG - 1; ++i)
3667 for (wl = signals [i].head; wl; )
3668 {
3669 wn = wl->next;
3670 cb (EV_A_ EV_SIGNAL, wl);
3671 wl = wn;
3672 }
3673
3674 if (types & EV_CHILD)
3675 for (i = EV_PID_HASHSIZE; i--; )
3676 for (wl = childs [i]; wl; )
3677 {
3678 wn = wl->next;
3679 cb (EV_A_ EV_CHILD, wl);
3680 wl = wn;
3681 }
3682/* EV_STAT 0x00001000 /* stat data changed */
3683/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3684}
3685#endif
3686
2742#if EV_MULTIPLICITY 3687#if EV_MULTIPLICITY
2743 #include "ev_wrap.h" 3688 #include "ev_wrap.h"
2744#endif 3689#endif
2745 3690
2746#ifdef __cplusplus 3691#ifdef __cplusplus

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