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Comparing libev/ev.c (file contents):
Revision 1.221 by root, Sun Apr 6 12:44:49 2008 UTC vs.
Revision 1.315 by root, Wed Aug 26 17:46:22 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
136#include <fcntl.h> 158#include <fcntl.h>
… …
154#ifndef _WIN32 176#ifndef _WIN32
155# include <sys/time.h> 177# include <sys/time.h>
156# include <sys/wait.h> 178# include <sys/wait.h>
157# include <unistd.h> 179# include <unistd.h>
158#else 180#else
181# include <io.h>
159# define WIN32_LEAN_AND_MEAN 182# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 183# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 184# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 185# define EV_SELECT_IS_WINSOCKET 1
163# endif 186# endif
164#endif 187#endif
165 188
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
167 190
191/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG)
193/* use what's provided */
194#elif defined (NSIG)
195# define EV_NSIG (NSIG)
196#elif defined(_NSIG)
197# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX)
199# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX)
201# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX)
203# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else
213# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 65
216#endif
217
218#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1
221# else
222# define EV_USE_CLOCK_SYSCALL 0
223# endif
224#endif
225
168#ifndef EV_USE_MONOTONIC 226#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1
229# else
169# define EV_USE_MONOTONIC 0 230# define EV_USE_MONOTONIC 0
231# endif
170#endif 232#endif
171 233
172#ifndef EV_USE_REALTIME 234#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 236#endif
175 237
176#ifndef EV_USE_NANOSLEEP 238#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1
241# else
177# define EV_USE_NANOSLEEP 0 242# define EV_USE_NANOSLEEP 0
243# endif
178#endif 244#endif
179 245
180#ifndef EV_USE_SELECT 246#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 247# define EV_USE_SELECT 1
182#endif 248#endif
… …
235# else 301# else
236# define EV_USE_EVENTFD 0 302# define EV_USE_EVENTFD 0
237# endif 303# endif
238#endif 304#endif
239 305
306#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1
309# else
310# define EV_USE_SIGNALFD 0
311# endif
312#endif
313
314#if 0 /* debugging */
315# define EV_VERIFY 3
316# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1
318#endif
319
320#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL
322#endif
323
324#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL
326#endif
327
328#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL
330#endif
331
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h>
336# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1
340# else
341# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0
343# endif
344#endif
345
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 346/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 347
242#ifndef CLOCK_MONOTONIC 348#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 349# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 350# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 365# include <sys/select.h>
260# endif 366# endif
261#endif 367#endif
262 368
263#if EV_USE_INOTIFY 369#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h>
264# include <sys/inotify.h> 372# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0
377# endif
265#endif 378#endif
266 379
267#if EV_SELECT_IS_WINSOCKET 380#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 381# include <winsock.h>
269#endif 382#endif
270 383
271#if EV_USE_EVENTFD 384#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 386# include <stdint.h>
387# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK
389# endif
390# ifndef EFD_CLOEXEC
391# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC
393# else
394# define EFD_CLOEXEC 02000000
395# endif
396# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
274int eventfd (unsigned int initval, int flags); 400int eventfd (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
275#endif 403# endif
404#endif
405
406#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h>
409# ifndef SFD_NONBLOCK
410# define SFD_NONBLOCK O_NONBLOCK
411# endif
412# ifndef SFD_CLOEXEC
413# ifdef O_CLOEXEC
414# define SFD_CLOEXEC O_CLOEXEC
415# else
416# define SFD_CLOEXEC 02000000
417# endif
418# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags);
423
424struct signalfd_siginfo
425{
426 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)];
428};
429# ifdef __cplusplus
430}
431# endif
432#endif
433
276 434
277/**/ 435/**/
436
437#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
439#else
440# define EV_FREQUENT_CHECK do { } while (0)
441#endif
278 442
279/* 443/*
280 * This is used to avoid floating point rounding problems. 444 * This is used to avoid floating point rounding problems.
281 * It is added to ev_rt_now when scheduling periodics 445 * It is added to ev_rt_now when scheduling periodics
282 * to ensure progress, time-wise, even when rounding 446 * to ensure progress, time-wise, even when rounding
… …
294# define expect(expr,value) __builtin_expect ((expr),(value)) 458# define expect(expr,value) __builtin_expect ((expr),(value))
295# define noinline __attribute__ ((noinline)) 459# define noinline __attribute__ ((noinline))
296#else 460#else
297# define expect(expr,value) (expr) 461# define expect(expr,value) (expr)
298# define noinline 462# define noinline
299# if __STDC_VERSION__ < 199901L 463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
300# define inline 464# define inline
301# endif 465# endif
302#endif 466#endif
303 467
304#define expect_false(expr) expect ((expr) != 0, 0) 468#define expect_false(expr) expect ((expr) != 0, 0)
… …
309# define inline_speed static noinline 473# define inline_speed static noinline
310#else 474#else
311# define inline_speed static inline 475# define inline_speed static inline
312#endif 476#endif
313 477
314#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
315#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 483# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
484#endif
316 485
317#define EMPTY /* required for microsofts broken pseudo-c compiler */ 486#define EMPTY /* required for microsofts broken pseudo-c compiler */
318#define EMPTY2(a,b) /* used to suppress some warnings */ 487#define EMPTY2(a,b) /* used to suppress some warnings */
319 488
320typedef ev_watcher *W; 489typedef ev_watcher *W;
321typedef ev_watcher_list *WL; 490typedef ev_watcher_list *WL;
322typedef ev_watcher_time *WT; 491typedef ev_watcher_time *WT;
323 492
324#if EV_USE_MONOTONIC 493#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at
495
496#if EV_USE_REALTIME
325/* 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 */
326/* 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
327static 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 (fd, 0)
511#endif
512#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd)
328#endif 514#endif
329 515
330#ifdef _WIN32 516#ifdef _WIN32
331# include "ev_win32.c" 517# include "ev_win32.c"
332#endif 518#endif
… …
340{ 526{
341 syserr_cb = cb; 527 syserr_cb = cb;
342} 528}
343 529
344static void noinline 530static void noinline
345syserr (const char *msg) 531ev_syserr (const char *msg)
346{ 532{
347 if (!msg) 533 if (!msg)
348 msg = "(libev) system error"; 534 msg = "(libev) system error";
349 535
350 if (syserr_cb) 536 if (syserr_cb)
… …
354 perror (msg); 540 perror (msg);
355 abort (); 541 abort ();
356 } 542 }
357} 543}
358 544
545static void *
546ev_realloc_emul (void *ptr, long size)
547{
548 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and
550 * the single unix specification, so work around them here.
551 */
552
553 if (size)
554 return realloc (ptr, size);
555
556 free (ptr);
557 return 0;
558}
559
359static void *(*alloc)(void *ptr, long size); 560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
360 561
361void 562void
362ev_set_allocator (void *(*cb)(void *ptr, long size)) 563ev_set_allocator (void *(*cb)(void *ptr, long size))
363{ 564{
364 alloc = cb; 565 alloc = cb;
365} 566}
366 567
367inline_speed void * 568inline_speed void *
368ev_realloc (void *ptr, long size) 569ev_realloc (void *ptr, long size)
369{ 570{
370 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 571 ptr = alloc (ptr, size);
371 572
372 if (!ptr && size) 573 if (!ptr && size)
373 { 574 {
374 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
375 abort (); 576 abort ();
… …
381#define ev_malloc(size) ev_realloc (0, (size)) 582#define ev_malloc(size) ev_realloc (0, (size))
382#define ev_free(ptr) ev_realloc ((ptr), 0) 583#define ev_free(ptr) ev_realloc ((ptr), 0)
383 584
384/*****************************************************************************/ 585/*****************************************************************************/
385 586
587/* set in reify when reification needed */
588#define EV_ANFD_REIFY 1
589
590/* file descriptor info structure */
386typedef struct 591typedef struct
387{ 592{
388 WL head; 593 WL head;
389 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 */
390 unsigned char reify; 597 unsigned char unused;
598#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif
391#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
392 SOCKET handle; 602 SOCKET handle;
393#endif 603#endif
394} ANFD; 604} ANFD;
395 605
606/* stores the pending event set for a given watcher */
396typedef struct 607typedef struct
397{ 608{
398 W w; 609 W w;
399 int events; 610 int events; /* the pending event set for the given watcher */
400} ANPENDING; 611} ANPENDING;
401 612
402#if EV_USE_INOTIFY 613#if EV_USE_INOTIFY
614/* hash table entry per inotify-id */
403typedef struct 615typedef struct
404{ 616{
405 WL head; 617 WL head;
406} 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)
407#endif 639#endif
408 640
409#if EV_MULTIPLICITY 641#if EV_MULTIPLICITY
410 642
411 struct ev_loop 643 struct ev_loop
… …
430 662
431 static int ev_default_loop_ptr; 663 static int ev_default_loop_ptr;
432 664
433#endif 665#endif
434 666
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
435/*****************************************************************************/ 679/*****************************************************************************/
436 680
681#ifndef EV_HAVE_EV_TIME
437ev_tstamp 682ev_tstamp
438ev_time (void) 683ev_time (void)
439{ 684{
440#if EV_USE_REALTIME 685#if EV_USE_REALTIME
686 if (expect_true (have_realtime))
687 {
441 struct timespec ts; 688 struct timespec ts;
442 clock_gettime (CLOCK_REALTIME, &ts); 689 clock_gettime (CLOCK_REALTIME, &ts);
443 return ts.tv_sec + ts.tv_nsec * 1e-9; 690 return ts.tv_sec + ts.tv_nsec * 1e-9;
444#else 691 }
692#endif
693
445 struct timeval tv; 694 struct timeval tv;
446 gettimeofday (&tv, 0); 695 gettimeofday (&tv, 0);
447 return tv.tv_sec + tv.tv_usec * 1e-6; 696 return tv.tv_sec + tv.tv_usec * 1e-6;
448#endif
449} 697}
698#endif
450 699
451ev_tstamp inline_size 700inline_size ev_tstamp
452get_clock (void) 701get_clock (void)
453{ 702{
454#if EV_USE_MONOTONIC 703#if EV_USE_MONOTONIC
455 if (expect_true (have_monotonic)) 704 if (expect_true (have_monotonic))
456 { 705 {
… …
489 struct timeval tv; 738 struct timeval tv;
490 739
491 tv.tv_sec = (time_t)delay; 740 tv.tv_sec = (time_t)delay;
492 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
493 742
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 */
494 select (0, 0, 0, 0, &tv); 746 select (0, 0, 0, 0, &tv);
495#endif 747#endif
496 } 748 }
497} 749}
498 750
499/*****************************************************************************/ 751/*****************************************************************************/
500 752
501int inline_size 753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754
755/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */
757inline_size int
502array_nextsize (int elem, int cur, int cnt) 758array_nextsize (int elem, int cur, int cnt)
503{ 759{
504 int ncur = cur + 1; 760 int ncur = cur + 1;
505 761
506 do 762 do
507 ncur <<= 1; 763 ncur <<= 1;
508 while (cnt > ncur); 764 while (cnt > ncur);
509 765
510 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
511 if (elem * ncur > 4096) 767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
512 { 768 {
513 ncur *= elem; 769 ncur *= elem;
514 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
515 ncur = ncur - sizeof (void *) * 4; 771 ncur = ncur - sizeof (void *) * 4;
516 ncur /= elem; 772 ncur /= elem;
517 } 773 }
518 774
519 return ncur; 775 return ncur;
… …
523array_realloc (int elem, void *base, int *cur, int cnt) 779array_realloc (int elem, void *base, int *cur, int cnt)
524{ 780{
525 *cur = array_nextsize (elem, *cur, cnt); 781 *cur = array_nextsize (elem, *cur, cnt);
526 return ev_realloc (base, elem * *cur); 782 return ev_realloc (base, elem * *cur);
527} 783}
784
785#define array_init_zero(base,count) \
786 memset ((void *)(base), 0, sizeof (*(base)) * (count))
528 787
529#define array_needsize(type,base,cur,cnt,init) \ 788#define array_needsize(type,base,cur,cnt,init) \
530 if (expect_false ((cnt) > (cur))) \ 789 if (expect_false ((cnt) > (cur))) \
531 { \ 790 { \
532 int ocur_ = (cur); \ 791 int ocur_ = (cur); \
… …
544 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 803 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
545 } 804 }
546#endif 805#endif
547 806
548#define array_free(stem, idx) \ 807#define array_free(stem, idx) \
549 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
550 809
551/*****************************************************************************/ 810/*****************************************************************************/
811
812/* dummy callback for pending events */
813static void noinline
814pendingcb (EV_P_ ev_prepare *w, int revents)
815{
816}
552 817
553void noinline 818void noinline
554ev_feed_event (EV_P_ void *w, int revents) 819ev_feed_event (EV_P_ void *w, int revents)
555{ 820{
556 W w_ = (W)w; 821 W w_ = (W)w;
… …
565 pendings [pri][w_->pending - 1].w = w_; 830 pendings [pri][w_->pending - 1].w = w_;
566 pendings [pri][w_->pending - 1].events = revents; 831 pendings [pri][w_->pending - 1].events = revents;
567 } 832 }
568} 833}
569 834
570void 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
571queue_events (EV_P_ W *events, int eventcnt, int type) 851queue_events (EV_P_ W *events, int eventcnt, int type)
572{ 852{
573 int i; 853 int i;
574 854
575 for (i = 0; i < eventcnt; ++i) 855 for (i = 0; i < eventcnt; ++i)
576 ev_feed_event (EV_A_ events [i], type); 856 ev_feed_event (EV_A_ events [i], type);
577} 857}
578 858
579/*****************************************************************************/ 859/*****************************************************************************/
580 860
581void inline_size 861inline_speed void
582anfds_init (ANFD *base, int count)
583{
584 while (count--)
585 {
586 base->head = 0;
587 base->events = EV_NONE;
588 base->reify = 0;
589
590 ++base;
591 }
592}
593
594void inline_speed
595fd_event (EV_P_ int fd, int revents) 862fd_event_nc (EV_P_ int fd, int revents)
596{ 863{
597 ANFD *anfd = anfds + fd; 864 ANFD *anfd = anfds + fd;
598 ev_io *w; 865 ev_io *w;
599 866
600 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)
… …
604 if (ev) 871 if (ev)
605 ev_feed_event (EV_A_ (W)w, ev); 872 ev_feed_event (EV_A_ (W)w, ev);
606 } 873 }
607} 874}
608 875
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
609void 887void
610ev_feed_fd_event (EV_P_ int fd, int revents) 888ev_feed_fd_event (EV_P_ int fd, int revents)
611{ 889{
612 if (fd >= 0 && fd < anfdmax) 890 if (fd >= 0 && fd < anfdmax)
613 fd_event (EV_A_ fd, revents); 891 fd_event_nc (EV_A_ fd, revents);
614} 892}
615 893
616void inline_size 894/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */
896inline_size void
617fd_reify (EV_P) 897fd_reify (EV_P)
618{ 898{
619 int i; 899 int i;
620 900
621 for (i = 0; i < fdchangecnt; ++i) 901 for (i = 0; i < fdchangecnt; ++i)
… …
630 events |= (unsigned char)w->events; 910 events |= (unsigned char)w->events;
631 911
632#if EV_SELECT_IS_WINSOCKET 912#if EV_SELECT_IS_WINSOCKET
633 if (events) 913 if (events)
634 { 914 {
635 unsigned long argp; 915 unsigned long arg;
636 #ifdef EV_FD_TO_WIN32_HANDLE
637 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
638 #else
639 anfd->handle = _get_osfhandle (fd);
640 #endif
641 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));
642 } 918 }
643#endif 919#endif
644 920
645 { 921 {
646 unsigned char o_events = anfd->events; 922 unsigned char o_events = anfd->events;
647 unsigned char o_reify = anfd->reify; 923 unsigned char o_reify = anfd->reify;
648 924
649 anfd->reify = 0; 925 anfd->reify = 0;
650 anfd->events = events; 926 anfd->events = events;
651 927
652 if (o_events != events || o_reify & EV_IOFDSET) 928 if (o_events != events || o_reify & EV__IOFDSET)
653 backend_modify (EV_A_ fd, o_events, events); 929 backend_modify (EV_A_ fd, o_events, events);
654 } 930 }
655 } 931 }
656 932
657 fdchangecnt = 0; 933 fdchangecnt = 0;
658} 934}
659 935
660void inline_size 936/* something about the given fd changed */
937inline_size void
661fd_change (EV_P_ int fd, int flags) 938fd_change (EV_P_ int fd, int flags)
662{ 939{
663 unsigned char reify = anfds [fd].reify; 940 unsigned char reify = anfds [fd].reify;
664 anfds [fd].reify |= flags; 941 anfds [fd].reify |= flags;
665 942
… …
669 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 946 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
670 fdchanges [fdchangecnt - 1] = fd; 947 fdchanges [fdchangecnt - 1] = fd;
671 } 948 }
672} 949}
673 950
674void inline_speed 951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void
675fd_kill (EV_P_ int fd) 953fd_kill (EV_P_ int fd)
676{ 954{
677 ev_io *w; 955 ev_io *w;
678 956
679 while ((w = (ev_io *)anfds [fd].head)) 957 while ((w = (ev_io *)anfds [fd].head))
… …
681 ev_io_stop (EV_A_ w); 959 ev_io_stop (EV_A_ w);
682 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);
683 } 961 }
684} 962}
685 963
686int inline_size 964/* check whether the given fd is atcually valid, for error recovery */
965inline_size int
687fd_valid (int fd) 966fd_valid (int fd)
688{ 967{
689#ifdef _WIN32 968#ifdef _WIN32
690 return _get_osfhandle (fd) != -1; 969 return _get_osfhandle (fd) != -1;
691#else 970#else
… …
699{ 978{
700 int fd; 979 int fd;
701 980
702 for (fd = 0; fd < anfdmax; ++fd) 981 for (fd = 0; fd < anfdmax; ++fd)
703 if (anfds [fd].events) 982 if (anfds [fd].events)
704 if (!fd_valid (fd) == -1 && errno == EBADF) 983 if (!fd_valid (fd) && errno == EBADF)
705 fd_kill (EV_A_ fd); 984 fd_kill (EV_A_ fd);
706} 985}
707 986
708/* 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 */
709static void noinline 988static void noinline
… …
713 992
714 for (fd = anfdmax; fd--; ) 993 for (fd = anfdmax; fd--; )
715 if (anfds [fd].events) 994 if (anfds [fd].events)
716 { 995 {
717 fd_kill (EV_A_ fd); 996 fd_kill (EV_A_ fd);
718 return; 997 break;
719 } 998 }
720} 999}
721 1000
722/* 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 */
723static void noinline 1002static void noinline
… …
727 1006
728 for (fd = 0; fd < anfdmax; ++fd) 1007 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1008 if (anfds [fd].events)
730 { 1009 {
731 anfds [fd].events = 0; 1010 anfds [fd].events = 0;
1011 anfds [fd].emask = 0;
732 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
733 } 1013 }
734} 1014}
735 1015
736/*****************************************************************************/ 1016/*****************************************************************************/
737 1017
738void inline_speed 1018/*
739upheap (WT *heap, int k) 1019 * the heap functions want a real array index. array index 0 uis guaranteed to not
740{ 1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
741 WT w = heap [k]; 1021 * the branching factor of the d-tree.
1022 */
742 1023
743 while (k) 1024/*
744 { 1025 * at the moment we allow libev the luxury of two heaps,
745 int p = (k - 1) >> 1; 1026 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1027 * which is more cache-efficient.
1028 * the difference is about 5% with 50000+ watchers.
1029 */
1030#if EV_USE_4HEAP
746 1031
747 if (heap [p]->at <= w->at) 1032#define DHEAP 4
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))
1036
1037/* away from the root */
1038inline_speed void
1039downheap (ANHE *heap, int N, int k)
1040{
1041 ANHE he = heap [k];
1042 ANHE *E = heap + N + HEAP0;
1043
1044 for (;;)
1045 {
1046 ev_tstamp minat;
1047 ANHE *minpos;
1048 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1049
1050 /* find minimum child */
1051 if (expect_true (pos + DHEAP - 1 < E))
1052 {
1053 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1054 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1055 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
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));
1064 }
1065 else
748 break; 1066 break;
749 1067
1068 if (ANHE_at (he) <= minat)
1069 break;
1070
1071 heap [k] = *minpos;
1072 ev_active (ANHE_w (*minpos)) = k;
1073
1074 k = minpos - heap;
1075 }
1076
1077 heap [k] = he;
1078 ev_active (ANHE_w (he)) = k;
1079}
1080
1081#else /* 4HEAP */
1082
1083#define HEAP0 1
1084#define HPARENT(k) ((k) >> 1)
1085#define UPHEAP_DONE(p,k) (!(p))
1086
1087/* away from the root */
1088inline_speed void
1089downheap (ANHE *heap, int N, int k)
1090{
1091 ANHE he = heap [k];
1092
1093 for (;;)
1094 {
1095 int c = k << 1;
1096
1097 if (c >= N + HEAP0)
1098 break;
1099
1100 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1101 ? 1 : 0;
1102
1103 if (ANHE_at (he) <= ANHE_at (heap [c]))
1104 break;
1105
1106 heap [k] = heap [c];
1107 ev_active (ANHE_w (heap [k])) = k;
1108
1109 k = c;
1110 }
1111
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
750 heap [k] = heap [p]; 1130 heap [k] = heap [p];
751 ((W)heap [k])->active = k + 1; 1131 ev_active (ANHE_w (heap [k])) = k;
752 k = p; 1132 k = p;
753 } 1133 }
754 1134
755 heap [k] = w; 1135 heap [k] = he;
756 ((W)heap [k])->active = k + 1; 1136 ev_active (ANHE_w (he)) = k;
757} 1137}
758 1138
759void inline_speed 1139/* move an element suitably so it is in a correct place */
760downheap (WT *heap, int N, int k) 1140inline_size void
761{
762 WT w = heap [k];
763
764 for (;;)
765 {
766 int c = (k << 1) + 1;
767
768 if (c >= N)
769 break;
770
771 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
772 ? 1 : 0;
773
774 if (w->at <= heap [c]->at)
775 break;
776
777 heap [k] = heap [c];
778 ((W)heap [k])->active = k + 1;
779
780 k = c;
781 }
782
783 heap [k] = w;
784 ((W)heap [k])->active = k + 1;
785}
786
787void inline_size
788adjustheap (WT *heap, int N, int k) 1141adjustheap (ANHE *heap, int N, int k)
789{ 1142{
1143 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
790 upheap (heap, k); 1144 upheap (heap, k);
1145 else
791 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);
792} 1159}
793 1160
794/*****************************************************************************/ 1161/*****************************************************************************/
795 1162
1163/* associate signal watchers to a signal signal */
796typedef struct 1164typedef struct
797{ 1165{
1166 EV_ATOMIC_T pending;
1167#if EV_MULTIPLICITY
1168 EV_P;
1169#endif
798 WL head; 1170 WL head;
799 EV_ATOMIC_T gotsig;
800} ANSIG; 1171} ANSIG;
801 1172
802static ANSIG *signals; 1173static ANSIG signals [EV_NSIG - 1];
803static int signalmax;
804
805static EV_ATOMIC_T gotsig;
806
807void inline_size
808signals_init (ANSIG *base, int count)
809{
810 while (count--)
811 {
812 base->head = 0;
813 base->gotsig = 0;
814
815 ++base;
816 }
817}
818 1174
819/*****************************************************************************/ 1175/*****************************************************************************/
820 1176
821void inline_speed 1177/* used to prepare libev internal fd's */
1178/* this is not fork-safe */
1179inline_speed void
822fd_intern (int fd) 1180fd_intern (int fd)
823{ 1181{
824#ifdef _WIN32 1182#ifdef _WIN32
825 int arg = 1; 1183 unsigned long arg = 1;
826 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
827#else 1185#else
828 fcntl (fd, F_SETFD, FD_CLOEXEC); 1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
829 fcntl (fd, F_SETFL, O_NONBLOCK); 1187 fcntl (fd, F_SETFL, O_NONBLOCK);
830#endif 1188#endif
831} 1189}
832 1190
833static void noinline 1191static void noinline
834evpipe_init (EV_P) 1192evpipe_init (EV_P)
835{ 1193{
836 if (!ev_is_active (&pipeev)) 1194 if (!ev_is_active (&pipe_w))
837 { 1195 {
838#if EV_USE_EVENTFD 1196#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL)
839 if ((evfd = eventfd (0, 0)) >= 0) 1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
840 { 1202 {
841 evpipe [0] = -1; 1203 evpipe [0] = -1;
842 fd_intern (evfd); 1204 fd_intern (evfd); /* doing it twice doesn't hurt */
843 ev_io_set (&pipeev, evfd, EV_READ); 1205 ev_io_set (&pipe_w, evfd, EV_READ);
844 } 1206 }
845 else 1207 else
846#endif 1208#endif
847 { 1209 {
848 while (pipe (evpipe)) 1210 while (pipe (evpipe))
849 syserr ("(libev) error creating signal/async pipe"); 1211 ev_syserr ("(libev) error creating signal/async pipe");
850 1212
851 fd_intern (evpipe [0]); 1213 fd_intern (evpipe [0]);
852 fd_intern (evpipe [1]); 1214 fd_intern (evpipe [1]);
853 ev_io_set (&pipeev, evpipe [0], EV_READ); 1215 ev_io_set (&pipe_w, evpipe [0], EV_READ);
854 } 1216 }
855 1217
856 ev_io_start (EV_A_ &pipeev); 1218 ev_io_start (EV_A_ &pipe_w);
857 ev_unref (EV_A); /* watcher should not keep loop alive */ 1219 ev_unref (EV_A); /* watcher should not keep loop alive */
858 } 1220 }
859} 1221}
860 1222
861void inline_size 1223inline_size void
862evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
863{ 1225{
864 if (!*flag) 1226 if (!*flag)
865 { 1227 {
866 int old_errno = errno; /* save errno because write might clobber it */ 1228 int old_errno = errno; /* save errno because write might clobber it */
… …
879 1241
880 errno = old_errno; 1242 errno = old_errno;
881 } 1243 }
882} 1244}
883 1245
1246/* called whenever the libev signal pipe */
1247/* got some events (signal, async) */
884static void 1248static void
885pipecb (EV_P_ ev_io *iow, int revents) 1249pipecb (EV_P_ ev_io *iow, int revents)
886{ 1250{
1251 int i;
1252
887#if EV_USE_EVENTFD 1253#if EV_USE_EVENTFD
888 if (evfd >= 0) 1254 if (evfd >= 0)
889 { 1255 {
890 uint64_t counter = 1; 1256 uint64_t counter;
891 read (evfd, &counter, sizeof (uint64_t)); 1257 read (evfd, &counter, sizeof (uint64_t));
892 } 1258 }
893 else 1259 else
894#endif 1260#endif
895 { 1261 {
896 char dummy; 1262 char dummy;
897 read (evpipe [0], &dummy, 1); 1263 read (evpipe [0], &dummy, 1);
898 } 1264 }
899 1265
900 if (gotsig && ev_is_default_loop (EV_A)) 1266 if (sig_pending)
901 { 1267 {
902 int signum; 1268 sig_pending = 0;
903 gotsig = 0;
904 1269
905 for (signum = signalmax; signum--; ) 1270 for (i = EV_NSIG - 1; i--; )
906 if (signals [signum].gotsig) 1271 if (expect_false (signals [i].pending))
907 ev_feed_signal_event (EV_A_ signum + 1); 1272 ev_feed_signal_event (EV_A_ i + 1);
908 } 1273 }
909 1274
910#if EV_ASYNC_ENABLE 1275#if EV_ASYNC_ENABLE
911 if (gotasync) 1276 if (async_pending)
912 { 1277 {
913 int i; 1278 async_pending = 0;
914 gotasync = 0;
915 1279
916 for (i = asynccnt; i--; ) 1280 for (i = asynccnt; i--; )
917 if (asyncs [i]->sent) 1281 if (asyncs [i]->sent)
918 { 1282 {
919 asyncs [i]->sent = 0; 1283 asyncs [i]->sent = 0;
… …
927 1291
928static void 1292static void
929ev_sighandler (int signum) 1293ev_sighandler (int signum)
930{ 1294{
931#if EV_MULTIPLICITY 1295#if EV_MULTIPLICITY
932 struct ev_loop *loop = &default_loop_struct; 1296 EV_P = signals [signum - 1].loop;
933#endif 1297#endif
934 1298
935#if _WIN32 1299#if _WIN32
936 signal (signum, ev_sighandler); 1300 signal (signum, ev_sighandler);
937#endif 1301#endif
938 1302
939 signals [signum - 1].gotsig = 1; 1303 signals [signum - 1].pending = 1;
940 evpipe_write (EV_A_ &gotsig); 1304 evpipe_write (EV_A_ &sig_pending);
941} 1305}
942 1306
943void noinline 1307void noinline
944ev_feed_signal_event (EV_P_ int signum) 1308ev_feed_signal_event (EV_P_ int signum)
945{ 1309{
946 WL w; 1310 WL w;
947 1311
1312 if (expect_false (signum <= 0 || signum > EV_NSIG))
1313 return;
1314
1315 --signum;
1316
948#if EV_MULTIPLICITY 1317#if EV_MULTIPLICITY
949 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 */
950#endif 1319 /* or, likely more useful, feeding a signal nobody is waiting for */
951 1320
952 --signum; 1321 if (expect_false (signals [signum].loop != EV_A))
953
954 if (signum < 0 || signum >= signalmax)
955 return; 1322 return;
1323#endif
956 1324
957 signals [signum].gotsig = 0; 1325 signals [signum].pending = 0;
958 1326
959 for (w = signals [signum].head; w; w = w->next) 1327 for (w = signals [signum].head; w; w = w->next)
960 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
961} 1329}
962 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
963/*****************************************************************************/ 1351/*****************************************************************************/
964 1352
965static WL childs [EV_PID_HASHSIZE]; 1353static WL childs [EV_PID_HASHSIZE];
966 1354
967#ifndef _WIN32 1355#ifndef _WIN32
… …
970 1358
971#ifndef WIFCONTINUED 1359#ifndef WIFCONTINUED
972# define WIFCONTINUED(status) 0 1360# define WIFCONTINUED(status) 0
973#endif 1361#endif
974 1362
975void inline_speed 1363/* handle a single child status event */
1364inline_speed void
976child_reap (EV_P_ int chain, int pid, int status) 1365child_reap (EV_P_ int chain, int pid, int status)
977{ 1366{
978 ev_child *w; 1367 ev_child *w;
979 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
980 1369
… …
993 1382
994#ifndef WCONTINUED 1383#ifndef WCONTINUED
995# define WCONTINUED 0 1384# define WCONTINUED 0
996#endif 1385#endif
997 1386
1387/* called on sigchld etc., calls waitpid */
998static void 1388static void
999childcb (EV_P_ ev_signal *sw, int revents) 1389childcb (EV_P_ ev_signal *sw, int revents)
1000{ 1390{
1001 int pid, status; 1391 int pid, status;
1002 1392
… …
1083 /* kqueue is borked on everything but netbsd apparently */ 1473 /* kqueue is borked on everything but netbsd apparently */
1084 /* 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 */
1085 flags &= ~EVBACKEND_KQUEUE; 1475 flags &= ~EVBACKEND_KQUEUE;
1086#endif 1476#endif
1087#ifdef __APPLE__ 1477#ifdef __APPLE__
1088 // flags &= ~EVBACKEND_KQUEUE; for documentation 1478 /* only select works correctly on that "unix-certified" platform */
1089 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 */
1090#endif 1481#endif
1091 1482
1092 return flags; 1483 return flags;
1093} 1484}
1094 1485
… …
1108ev_backend (EV_P) 1499ev_backend (EV_P)
1109{ 1500{
1110 return backend; 1501 return backend;
1111} 1502}
1112 1503
1504#if EV_MINIMAL < 2
1113unsigned int 1505unsigned int
1114ev_loop_count (EV_P) 1506ev_loop_count (EV_P)
1115{ 1507{
1116 return loop_count; 1508 return loop_count;
1117} 1509}
1118 1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{
1514 return loop_depth;
1515}
1516
1119void 1517void
1120ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1121{ 1519{
1122 io_blocktime = interval; 1520 io_blocktime = interval;
1123} 1521}
… …
1126ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1127{ 1525{
1128 timeout_blocktime = interval; 1526 timeout_blocktime = interval;
1129} 1527}
1130 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 */
1131static void noinline 1554static void noinline
1132loop_init (EV_P_ unsigned int flags) 1555loop_init (EV_P_ unsigned int flags)
1133{ 1556{
1134 if (!backend) 1557 if (!backend)
1135 { 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
1136#if EV_USE_MONOTONIC 1569#if EV_USE_MONOTONIC
1570 if (!have_monotonic)
1137 { 1571 {
1138 struct timespec ts; 1572 struct timespec ts;
1573
1139 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1574 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1140 have_monotonic = 1; 1575 have_monotonic = 1;
1141 } 1576 }
1142#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"));
1143 1589
1144 ev_rt_now = ev_time (); 1590 ev_rt_now = ev_time ();
1145 mn_now = get_clock (); 1591 mn_now = get_clock ();
1146 now_floor = mn_now; 1592 now_floor = mn_now;
1147 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
1148 1597
1149 io_blocktime = 0.; 1598 io_blocktime = 0.;
1150 timeout_blocktime = 0.; 1599 timeout_blocktime = 0.;
1151 backend = 0; 1600 backend = 0;
1152 backend_fd = -1; 1601 backend_fd = -1;
1153 gotasync = 0; 1602 sig_pending = 0;
1603#if EV_ASYNC_ENABLE
1604 async_pending = 0;
1605#endif
1154#if EV_USE_INOTIFY 1606#if EV_USE_INOTIFY
1155 fs_fd = -2; 1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1156#endif 1608#endif
1157 1609#if EV_USE_SIGNALFD
1158 /* pid check not overridable via env */ 1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1159#ifndef _WIN32
1160 if (flags & EVFLAG_FORKCHECK)
1161 curpid = getpid ();
1162#endif 1611#endif
1163 1612
1164 if (!(flags & EVFLAG_NOENV)
1165 && !enable_secure ()
1166 && getenv ("LIBEV_FLAGS"))
1167 flags = atoi (getenv ("LIBEV_FLAGS"));
1168
1169 if (!(flags & 0x0000ffffUL)) 1613 if (!(flags & 0x0000ffffU))
1170 flags |= ev_recommended_backends (); 1614 flags |= ev_recommended_backends ();
1171 1615
1172#if EV_USE_PORT 1616#if EV_USE_PORT
1173 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1174#endif 1618#endif
… …
1183#endif 1627#endif
1184#if EV_USE_SELECT 1628#if EV_USE_SELECT
1185 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1186#endif 1630#endif
1187 1631
1632 ev_prepare_init (&pending_w, pendingcb);
1633
1188 ev_init (&pipeev, pipecb); 1634 ev_init (&pipe_w, pipecb);
1189 ev_set_priority (&pipeev, EV_MAXPRI); 1635 ev_set_priority (&pipe_w, EV_MAXPRI);
1190 } 1636 }
1191} 1637}
1192 1638
1639/* free up a loop structure */
1193static void noinline 1640static void noinline
1194loop_destroy (EV_P) 1641loop_destroy (EV_P)
1195{ 1642{
1196 int i; 1643 int i;
1197 1644
1198 if (ev_is_active (&pipeev)) 1645 if (ev_is_active (&pipe_w))
1199 { 1646 {
1200 ev_ref (EV_A); /* signal watcher */ 1647 /*ev_ref (EV_A);*/
1201 ev_io_stop (EV_A_ &pipeev); 1648 /*ev_io_stop (EV_A_ &pipe_w);*/
1202 1649
1203#if EV_USE_EVENTFD 1650#if EV_USE_EVENTFD
1204 if (evfd >= 0) 1651 if (evfd >= 0)
1205 close (evfd); 1652 close (evfd);
1206#endif 1653#endif
1207 1654
1208 if (evpipe [0] >= 0) 1655 if (evpipe [0] >= 0)
1209 { 1656 {
1210 close (evpipe [0]); 1657 EV_WIN32_CLOSE_FD (evpipe [0]);
1211 close (evpipe [1]); 1658 EV_WIN32_CLOSE_FD (evpipe [1]);
1212 } 1659 }
1213 } 1660 }
1661
1662#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w))
1664 {
1665 /*ev_ref (EV_A);*/
1666 /*ev_io_stop (EV_A_ &sigfd_w);*/
1667
1668 close (sigfd);
1669 }
1670#endif
1214 1671
1215#if EV_USE_INOTIFY 1672#if EV_USE_INOTIFY
1216 if (fs_fd >= 0) 1673 if (fs_fd >= 0)
1217 close (fs_fd); 1674 close (fs_fd);
1218#endif 1675#endif
… …
1242#if EV_IDLE_ENABLE 1699#if EV_IDLE_ENABLE
1243 array_free (idle, [i]); 1700 array_free (idle, [i]);
1244#endif 1701#endif
1245 } 1702 }
1246 1703
1247 ev_free (anfds); anfdmax = 0; 1704 ev_free (anfds); anfds = 0; anfdmax = 0;
1248 1705
1249 /* have to use the microsoft-never-gets-it-right macro */ 1706 /* have to use the microsoft-never-gets-it-right macro */
1707 array_free (rfeed, EMPTY);
1250 array_free (fdchange, EMPTY); 1708 array_free (fdchange, EMPTY);
1251 array_free (timer, EMPTY); 1709 array_free (timer, EMPTY);
1252#if EV_PERIODIC_ENABLE 1710#if EV_PERIODIC_ENABLE
1253 array_free (periodic, EMPTY); 1711 array_free (periodic, EMPTY);
1254#endif 1712#endif
… …
1262#endif 1720#endif
1263 1721
1264 backend = 0; 1722 backend = 0;
1265} 1723}
1266 1724
1725#if EV_USE_INOTIFY
1267void inline_size infy_fork (EV_P); 1726inline_size void infy_fork (EV_P);
1727#endif
1268 1728
1269void inline_size 1729inline_size void
1270loop_fork (EV_P) 1730loop_fork (EV_P)
1271{ 1731{
1272#if EV_USE_PORT 1732#if EV_USE_PORT
1273 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1733 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1274#endif 1734#endif
… …
1280#endif 1740#endif
1281#if EV_USE_INOTIFY 1741#if EV_USE_INOTIFY
1282 infy_fork (EV_A); 1742 infy_fork (EV_A);
1283#endif 1743#endif
1284 1744
1285 if (ev_is_active (&pipeev)) 1745 if (ev_is_active (&pipe_w))
1286 { 1746 {
1287 /* this "locks" the handlers against writing to the pipe */ 1747 /* this "locks" the handlers against writing to the pipe */
1288 /* while we modify the fd vars */ 1748 /* while we modify the fd vars */
1289 gotsig = 1; 1749 sig_pending = 1;
1290#if EV_ASYNC_ENABLE 1750#if EV_ASYNC_ENABLE
1291 gotasync = 1; 1751 async_pending = 1;
1292#endif 1752#endif
1293 1753
1294 ev_ref (EV_A); 1754 ev_ref (EV_A);
1295 ev_io_stop (EV_A_ &pipeev); 1755 ev_io_stop (EV_A_ &pipe_w);
1296 1756
1297#if EV_USE_EVENTFD 1757#if EV_USE_EVENTFD
1298 if (evfd >= 0) 1758 if (evfd >= 0)
1299 close (evfd); 1759 close (evfd);
1300#endif 1760#endif
1301 1761
1302 if (evpipe [0] >= 0) 1762 if (evpipe [0] >= 0)
1303 { 1763 {
1304 close (evpipe [0]); 1764 EV_WIN32_CLOSE_FD (evpipe [0]);
1305 close (evpipe [1]); 1765 EV_WIN32_CLOSE_FD (evpipe [1]);
1306 } 1766 }
1307 1767
1308 evpipe_init (EV_A); 1768 evpipe_init (EV_A);
1309 /* now iterate over everything, in case we missed something */ 1769 /* now iterate over everything, in case we missed something */
1310 pipecb (EV_A_ &pipeev, EV_READ); 1770 pipecb (EV_A_ &pipe_w, EV_READ);
1311 } 1771 }
1312 1772
1313 postfork = 0; 1773 postfork = 0;
1314} 1774}
1315 1775
1316#if EV_MULTIPLICITY 1776#if EV_MULTIPLICITY
1777
1317struct ev_loop * 1778struct ev_loop *
1318ev_loop_new (unsigned int flags) 1779ev_loop_new (unsigned int flags)
1319{ 1780{
1320 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1781 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1321 1782
1322 memset (loop, 0, sizeof (struct ev_loop)); 1783 memset (EV_A, 0, sizeof (struct ev_loop));
1323
1324 loop_init (EV_A_ flags); 1784 loop_init (EV_A_ flags);
1325 1785
1326 if (ev_backend (EV_A)) 1786 if (ev_backend (EV_A))
1327 return loop; 1787 return EV_A;
1328 1788
1329 return 0; 1789 return 0;
1330} 1790}
1331 1791
1332void 1792void
… …
1339void 1799void
1340ev_loop_fork (EV_P) 1800ev_loop_fork (EV_P)
1341{ 1801{
1342 postfork = 1; /* must be in line with ev_default_fork */ 1802 postfork = 1; /* must be in line with ev_default_fork */
1343} 1803}
1804#endif /* multiplicity */
1344 1805
1806#if EV_VERIFY
1807static void noinline
1808verify_watcher (EV_P_ W w)
1809{
1810 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1811
1812 if (w->pending)
1813 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1814}
1815
1816static void noinline
1817verify_heap (EV_P_ ANHE *heap, int N)
1818{
1819 int i;
1820
1821 for (i = HEAP0; i < N + HEAP0; ++i)
1822 {
1823 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1824 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1825 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1826
1827 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1828 }
1829}
1830
1831static void noinline
1832array_verify (EV_P_ W *ws, int cnt)
1833{
1834 while (cnt--)
1835 {
1836 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1837 verify_watcher (EV_A_ ws [cnt]);
1838 }
1839}
1840#endif
1841
1842#if EV_MINIMAL < 2
1843void
1844ev_loop_verify (EV_P)
1845{
1846#if EV_VERIFY
1847 int i;
1848 WL w;
1849
1850 assert (activecnt >= -1);
1851
1852 assert (fdchangemax >= fdchangecnt);
1853 for (i = 0; i < fdchangecnt; ++i)
1854 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1855
1856 assert (anfdmax >= 0);
1857 for (i = 0; i < anfdmax; ++i)
1858 for (w = anfds [i].head; w; w = w->next)
1859 {
1860 verify_watcher (EV_A_ (W)w);
1861 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1862 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1863 }
1864
1865 assert (timermax >= timercnt);
1866 verify_heap (EV_A_ timers, timercnt);
1867
1868#if EV_PERIODIC_ENABLE
1869 assert (periodicmax >= periodiccnt);
1870 verify_heap (EV_A_ periodics, periodiccnt);
1871#endif
1872
1873 for (i = NUMPRI; i--; )
1874 {
1875 assert (pendingmax [i] >= pendingcnt [i]);
1876#if EV_IDLE_ENABLE
1877 assert (idleall >= 0);
1878 assert (idlemax [i] >= idlecnt [i]);
1879 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1880#endif
1881 }
1882
1883#if EV_FORK_ENABLE
1884 assert (forkmax >= forkcnt);
1885 array_verify (EV_A_ (W *)forks, forkcnt);
1886#endif
1887
1888#if EV_ASYNC_ENABLE
1889 assert (asyncmax >= asynccnt);
1890 array_verify (EV_A_ (W *)asyncs, asynccnt);
1891#endif
1892
1893 assert (preparemax >= preparecnt);
1894 array_verify (EV_A_ (W *)prepares, preparecnt);
1895
1896 assert (checkmax >= checkcnt);
1897 array_verify (EV_A_ (W *)checks, checkcnt);
1898
1899# if 0
1900 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1901 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1902# endif
1903#endif
1904}
1345#endif 1905#endif
1346 1906
1347#if EV_MULTIPLICITY 1907#if EV_MULTIPLICITY
1348struct ev_loop * 1908struct ev_loop *
1349ev_default_loop_init (unsigned int flags) 1909ev_default_loop_init (unsigned int flags)
… …
1353#endif 1913#endif
1354{ 1914{
1355 if (!ev_default_loop_ptr) 1915 if (!ev_default_loop_ptr)
1356 { 1916 {
1357#if EV_MULTIPLICITY 1917#if EV_MULTIPLICITY
1358 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1918 EV_P = ev_default_loop_ptr = &default_loop_struct;
1359#else 1919#else
1360 ev_default_loop_ptr = 1; 1920 ev_default_loop_ptr = 1;
1361#endif 1921#endif
1362 1922
1363 loop_init (EV_A_ flags); 1923 loop_init (EV_A_ flags);
… …
1380 1940
1381void 1941void
1382ev_default_destroy (void) 1942ev_default_destroy (void)
1383{ 1943{
1384#if EV_MULTIPLICITY 1944#if EV_MULTIPLICITY
1385 struct ev_loop *loop = ev_default_loop_ptr; 1945 EV_P = ev_default_loop_ptr;
1386#endif 1946#endif
1947
1948 ev_default_loop_ptr = 0;
1387 1949
1388#ifndef _WIN32 1950#ifndef _WIN32
1389 ev_ref (EV_A); /* child watcher */ 1951 ev_ref (EV_A); /* child watcher */
1390 ev_signal_stop (EV_A_ &childev); 1952 ev_signal_stop (EV_A_ &childev);
1391#endif 1953#endif
… …
1395 1957
1396void 1958void
1397ev_default_fork (void) 1959ev_default_fork (void)
1398{ 1960{
1399#if EV_MULTIPLICITY 1961#if EV_MULTIPLICITY
1400 struct ev_loop *loop = ev_default_loop_ptr; 1962 EV_P = ev_default_loop_ptr;
1401#endif 1963#endif
1402 1964
1403 if (backend)
1404 postfork = 1; /* must be in line with ev_loop_fork */ 1965 postfork = 1; /* must be in line with ev_loop_fork */
1405} 1966}
1406 1967
1407/*****************************************************************************/ 1968/*****************************************************************************/
1408 1969
1409void 1970void
1410ev_invoke (EV_P_ void *w, int revents) 1971ev_invoke (EV_P_ void *w, int revents)
1411{ 1972{
1412 EV_CB_INVOKE ((W)w, revents); 1973 EV_CB_INVOKE ((W)w, revents);
1413} 1974}
1414 1975
1415void inline_speed 1976unsigned int
1416call_pending (EV_P) 1977ev_pending_count (EV_P)
1978{
1979 int pri;
1980 unsigned int count = 0;
1981
1982 for (pri = NUMPRI; pri--; )
1983 count += pendingcnt [pri];
1984
1985 return count;
1986}
1987
1988void noinline
1989ev_invoke_pending (EV_P)
1417{ 1990{
1418 int pri; 1991 int pri;
1419 1992
1420 for (pri = NUMPRI; pri--; ) 1993 for (pri = NUMPRI; pri--; )
1421 while (pendingcnt [pri]) 1994 while (pendingcnt [pri])
1422 { 1995 {
1423 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1996 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1424 1997
1425 if (expect_true (p->w))
1426 {
1427 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1998 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1999 /* ^ this is no longer true, as pending_w could be here */
1428 2000
1429 p->w->pending = 0; 2001 p->w->pending = 0;
1430 EV_CB_INVOKE (p->w, p->events); 2002 EV_CB_INVOKE (p->w, p->events);
1431 } 2003 EV_FREQUENT_CHECK;
1432 } 2004 }
1433} 2005}
1434 2006
1435void inline_size
1436timers_reify (EV_P)
1437{
1438 while (timercnt && ((WT)timers [0])->at <= mn_now)
1439 {
1440 ev_timer *w = (ev_timer *)timers [0];
1441
1442 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1443
1444 /* first reschedule or stop timer */
1445 if (w->repeat)
1446 {
1447 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1448
1449 ((WT)w)->at += w->repeat;
1450 if (((WT)w)->at < mn_now)
1451 ((WT)w)->at = mn_now;
1452
1453 downheap (timers, timercnt, 0);
1454 }
1455 else
1456 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1457
1458 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1459 }
1460}
1461
1462#if EV_PERIODIC_ENABLE
1463void inline_size
1464periodics_reify (EV_P)
1465{
1466 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1467 {
1468 ev_periodic *w = (ev_periodic *)periodics [0];
1469
1470 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1471
1472 /* first reschedule or stop timer */
1473 if (w->reschedule_cb)
1474 {
1475 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1476 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1477 downheap (periodics, periodiccnt, 0);
1478 }
1479 else if (w->interval)
1480 {
1481 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1482 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1483 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1484 downheap (periodics, periodiccnt, 0);
1485 }
1486 else
1487 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1488
1489 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1490 }
1491}
1492
1493static void noinline
1494periodics_reschedule (EV_P)
1495{
1496 int i;
1497
1498 /* adjust periodics after time jump */
1499 for (i = 0; i < periodiccnt; ++i)
1500 {
1501 ev_periodic *w = (ev_periodic *)periodics [i];
1502
1503 if (w->reschedule_cb)
1504 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1505 else if (w->interval)
1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 }
1508
1509 /* now rebuild the heap */
1510 for (i = periodiccnt >> 1; i--; )
1511 downheap (periodics, periodiccnt, i);
1512}
1513#endif
1514
1515#if EV_IDLE_ENABLE 2007#if EV_IDLE_ENABLE
1516void inline_size 2008/* make idle watchers pending. this handles the "call-idle */
2009/* only when higher priorities are idle" logic */
2010inline_size void
1517idle_reify (EV_P) 2011idle_reify (EV_P)
1518{ 2012{
1519 if (expect_false (idleall)) 2013 if (expect_false (idleall))
1520 { 2014 {
1521 int pri; 2015 int pri;
… …
1533 } 2027 }
1534 } 2028 }
1535} 2029}
1536#endif 2030#endif
1537 2031
1538void inline_speed 2032/* make timers pending */
2033inline_size void
2034timers_reify (EV_P)
2035{
2036 EV_FREQUENT_CHECK;
2037
2038 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2039 {
2040 do
2041 {
2042 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2043
2044 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2045
2046 /* first reschedule or stop timer */
2047 if (w->repeat)
2048 {
2049 ev_at (w) += w->repeat;
2050 if (ev_at (w) < mn_now)
2051 ev_at (w) = mn_now;
2052
2053 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2054
2055 ANHE_at_cache (timers [HEAP0]);
2056 downheap (timers, timercnt, HEAP0);
2057 }
2058 else
2059 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2060
2061 EV_FREQUENT_CHECK;
2062 feed_reverse (EV_A_ (W)w);
2063 }
2064 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2065
2066 feed_reverse_done (EV_A_ EV_TIMEOUT);
2067 }
2068}
2069
2070#if EV_PERIODIC_ENABLE
2071/* make periodics pending */
2072inline_size void
2073periodics_reify (EV_P)
2074{
2075 EV_FREQUENT_CHECK;
2076
2077 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2078 {
2079 int feed_count = 0;
2080
2081 do
2082 {
2083 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2084
2085 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2086
2087 /* first reschedule or stop timer */
2088 if (w->reschedule_cb)
2089 {
2090 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2091
2092 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2093
2094 ANHE_at_cache (periodics [HEAP0]);
2095 downheap (periodics, periodiccnt, HEAP0);
2096 }
2097 else if (w->interval)
2098 {
2099 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2100 /* if next trigger time is not sufficiently in the future, put it there */
2101 /* this might happen because of floating point inexactness */
2102 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2103 {
2104 ev_at (w) += w->interval;
2105
2106 /* if interval is unreasonably low we might still have a time in the past */
2107 /* so correct this. this will make the periodic very inexact, but the user */
2108 /* has effectively asked to get triggered more often than possible */
2109 if (ev_at (w) < ev_rt_now)
2110 ev_at (w) = ev_rt_now;
2111 }
2112
2113 ANHE_at_cache (periodics [HEAP0]);
2114 downheap (periodics, periodiccnt, HEAP0);
2115 }
2116 else
2117 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2118
2119 EV_FREQUENT_CHECK;
2120 feed_reverse (EV_A_ (W)w);
2121 }
2122 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2123
2124 feed_reverse_done (EV_A_ EV_PERIODIC);
2125 }
2126}
2127
2128/* simply recalculate all periodics */
2129/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2130static void noinline
2131periodics_reschedule (EV_P)
2132{
2133 int i;
2134
2135 /* adjust periodics after time jump */
2136 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2137 {
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2139
2140 if (w->reschedule_cb)
2141 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2142 else if (w->interval)
2143 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2144
2145 ANHE_at_cache (periodics [i]);
2146 }
2147
2148 reheap (periodics, periodiccnt);
2149}
2150#endif
2151
2152/* adjust all timers by a given offset */
2153static void noinline
2154timers_reschedule (EV_P_ ev_tstamp adjust)
2155{
2156 int i;
2157
2158 for (i = 0; i < timercnt; ++i)
2159 {
2160 ANHE *he = timers + i + HEAP0;
2161 ANHE_w (*he)->at += adjust;
2162 ANHE_at_cache (*he);
2163 }
2164}
2165
2166/* fetch new monotonic and realtime times from the kernel */
2167/* also detetc if there was a timejump, and act accordingly */
2168inline_speed void
1539time_update (EV_P_ ev_tstamp max_block) 2169time_update (EV_P_ ev_tstamp max_block)
1540{ 2170{
1541 int i;
1542
1543#if EV_USE_MONOTONIC 2171#if EV_USE_MONOTONIC
1544 if (expect_true (have_monotonic)) 2172 if (expect_true (have_monotonic))
1545 { 2173 {
2174 int i;
1546 ev_tstamp odiff = rtmn_diff; 2175 ev_tstamp odiff = rtmn_diff;
1547 2176
1548 mn_now = get_clock (); 2177 mn_now = get_clock ();
1549 2178
1550 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2179 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1568 */ 2197 */
1569 for (i = 4; --i; ) 2198 for (i = 4; --i; )
1570 { 2199 {
1571 rtmn_diff = ev_rt_now - mn_now; 2200 rtmn_diff = ev_rt_now - mn_now;
1572 2201
1573 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2202 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1574 return; /* all is well */ 2203 return; /* all is well */
1575 2204
1576 ev_rt_now = ev_time (); 2205 ev_rt_now = ev_time ();
1577 mn_now = get_clock (); 2206 mn_now = get_clock ();
1578 now_floor = mn_now; 2207 now_floor = mn_now;
1579 } 2208 }
1580 2209
2210 /* no timer adjustment, as the monotonic clock doesn't jump */
2211 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1581# if EV_PERIODIC_ENABLE 2212# if EV_PERIODIC_ENABLE
1582 periodics_reschedule (EV_A); 2213 periodics_reschedule (EV_A);
1583# endif 2214# endif
1584 /* no timer adjustment, as the monotonic clock doesn't jump */
1585 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1586 } 2215 }
1587 else 2216 else
1588#endif 2217#endif
1589 { 2218 {
1590 ev_rt_now = ev_time (); 2219 ev_rt_now = ev_time ();
1591 2220
1592 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2221 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1593 { 2222 {
2223 /* adjust timers. this is easy, as the offset is the same for all of them */
2224 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1594#if EV_PERIODIC_ENABLE 2225#if EV_PERIODIC_ENABLE
1595 periodics_reschedule (EV_A); 2226 periodics_reschedule (EV_A);
1596#endif 2227#endif
1597 /* adjust timers. this is easy, as the offset is the same for all of them */
1598 for (i = 0; i < timercnt; ++i)
1599 ((WT)timers [i])->at += ev_rt_now - mn_now;
1600 } 2228 }
1601 2229
1602 mn_now = ev_rt_now; 2230 mn_now = ev_rt_now;
1603 } 2231 }
1604} 2232}
1605 2233
1606void 2234void
1607ev_ref (EV_P)
1608{
1609 ++activecnt;
1610}
1611
1612void
1613ev_unref (EV_P)
1614{
1615 --activecnt;
1616}
1617
1618static int loop_done;
1619
1620void
1621ev_loop (EV_P_ int flags) 2235ev_loop (EV_P_ int flags)
1622{ 2236{
2237#if EV_MINIMAL < 2
2238 ++loop_depth;
2239#endif
2240
2241 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2242
1623 loop_done = EVUNLOOP_CANCEL; 2243 loop_done = EVUNLOOP_CANCEL;
1624 2244
1625 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2245 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1626 2246
1627 do 2247 do
1628 { 2248 {
2249#if EV_VERIFY >= 2
2250 ev_loop_verify (EV_A);
2251#endif
2252
1629#ifndef _WIN32 2253#ifndef _WIN32
1630 if (expect_false (curpid)) /* penalise the forking check even more */ 2254 if (expect_false (curpid)) /* penalise the forking check even more */
1631 if (expect_false (getpid () != curpid)) 2255 if (expect_false (getpid () != curpid))
1632 { 2256 {
1633 curpid = getpid (); 2257 curpid = getpid ();
… …
1639 /* we might have forked, so queue fork handlers */ 2263 /* we might have forked, so queue fork handlers */
1640 if (expect_false (postfork)) 2264 if (expect_false (postfork))
1641 if (forkcnt) 2265 if (forkcnt)
1642 { 2266 {
1643 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2267 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1644 call_pending (EV_A); 2268 EV_INVOKE_PENDING;
1645 } 2269 }
1646#endif 2270#endif
1647 2271
1648 /* queue prepare watchers (and execute them) */ 2272 /* queue prepare watchers (and execute them) */
1649 if (expect_false (preparecnt)) 2273 if (expect_false (preparecnt))
1650 { 2274 {
1651 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2275 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1652 call_pending (EV_A); 2276 EV_INVOKE_PENDING;
1653 } 2277 }
1654 2278
1655 if (expect_false (!activecnt)) 2279 if (expect_false (loop_done))
1656 break; 2280 break;
1657 2281
1658 /* we might have forked, so reify kernel state if necessary */ 2282 /* we might have forked, so reify kernel state if necessary */
1659 if (expect_false (postfork)) 2283 if (expect_false (postfork))
1660 loop_fork (EV_A); 2284 loop_fork (EV_A);
… …
1667 ev_tstamp waittime = 0.; 2291 ev_tstamp waittime = 0.;
1668 ev_tstamp sleeptime = 0.; 2292 ev_tstamp sleeptime = 0.;
1669 2293
1670 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2294 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1671 { 2295 {
2296 /* remember old timestamp for io_blocktime calculation */
2297 ev_tstamp prev_mn_now = mn_now;
2298
1672 /* update time to cancel out callback processing overhead */ 2299 /* update time to cancel out callback processing overhead */
1673 time_update (EV_A_ 1e100); 2300 time_update (EV_A_ 1e100);
1674 2301
1675 waittime = MAX_BLOCKTIME; 2302 waittime = MAX_BLOCKTIME;
1676 2303
1677 if (timercnt) 2304 if (timercnt)
1678 { 2305 {
1679 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2306 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1680 if (waittime > to) waittime = to; 2307 if (waittime > to) waittime = to;
1681 } 2308 }
1682 2309
1683#if EV_PERIODIC_ENABLE 2310#if EV_PERIODIC_ENABLE
1684 if (periodiccnt) 2311 if (periodiccnt)
1685 { 2312 {
1686 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2313 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1687 if (waittime > to) waittime = to; 2314 if (waittime > to) waittime = to;
1688 } 2315 }
1689#endif 2316#endif
1690 2317
2318 /* don't let timeouts decrease the waittime below timeout_blocktime */
1691 if (expect_false (waittime < timeout_blocktime)) 2319 if (expect_false (waittime < timeout_blocktime))
1692 waittime = timeout_blocktime; 2320 waittime = timeout_blocktime;
1693 2321
1694 sleeptime = waittime - backend_fudge; 2322 /* extra check because io_blocktime is commonly 0 */
1695
1696 if (expect_true (sleeptime > io_blocktime)) 2323 if (expect_false (io_blocktime))
1697 sleeptime = io_blocktime;
1698
1699 if (sleeptime)
1700 { 2324 {
2325 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2326
2327 if (sleeptime > waittime - backend_fudge)
2328 sleeptime = waittime - backend_fudge;
2329
2330 if (expect_true (sleeptime > 0.))
2331 {
1701 ev_sleep (sleeptime); 2332 ev_sleep (sleeptime);
1702 waittime -= sleeptime; 2333 waittime -= sleeptime;
2334 }
1703 } 2335 }
1704 } 2336 }
1705 2337
2338#if EV_MINIMAL < 2
1706 ++loop_count; 2339 ++loop_count;
2340#endif
2341 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1707 backend_poll (EV_A_ waittime); 2342 backend_poll (EV_A_ waittime);
2343 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1708 2344
1709 /* update ev_rt_now, do magic */ 2345 /* update ev_rt_now, do magic */
1710 time_update (EV_A_ waittime + sleeptime); 2346 time_update (EV_A_ waittime + sleeptime);
1711 } 2347 }
1712 2348
… …
1723 2359
1724 /* queue check watchers, to be executed first */ 2360 /* queue check watchers, to be executed first */
1725 if (expect_false (checkcnt)) 2361 if (expect_false (checkcnt))
1726 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2362 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1727 2363
1728 call_pending (EV_A); 2364 EV_INVOKE_PENDING;
1729 } 2365 }
1730 while (expect_true ( 2366 while (expect_true (
1731 activecnt 2367 activecnt
1732 && !loop_done 2368 && !loop_done
1733 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2369 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1734 )); 2370 ));
1735 2371
1736 if (loop_done == EVUNLOOP_ONE) 2372 if (loop_done == EVUNLOOP_ONE)
1737 loop_done = EVUNLOOP_CANCEL; 2373 loop_done = EVUNLOOP_CANCEL;
2374
2375#if EV_MINIMAL < 2
2376 --loop_depth;
2377#endif
1738} 2378}
1739 2379
1740void 2380void
1741ev_unloop (EV_P_ int how) 2381ev_unloop (EV_P_ int how)
1742{ 2382{
1743 loop_done = how; 2383 loop_done = how;
1744} 2384}
1745 2385
2386void
2387ev_ref (EV_P)
2388{
2389 ++activecnt;
2390}
2391
2392void
2393ev_unref (EV_P)
2394{
2395 --activecnt;
2396}
2397
2398void
2399ev_now_update (EV_P)
2400{
2401 time_update (EV_A_ 1e100);
2402}
2403
2404void
2405ev_suspend (EV_P)
2406{
2407 ev_now_update (EV_A);
2408}
2409
2410void
2411ev_resume (EV_P)
2412{
2413 ev_tstamp mn_prev = mn_now;
2414
2415 ev_now_update (EV_A);
2416 timers_reschedule (EV_A_ mn_now - mn_prev);
2417#if EV_PERIODIC_ENABLE
2418 /* TODO: really do this? */
2419 periodics_reschedule (EV_A);
2420#endif
2421}
2422
1746/*****************************************************************************/ 2423/*****************************************************************************/
2424/* singly-linked list management, used when the expected list length is short */
1747 2425
1748void inline_size 2426inline_size void
1749wlist_add (WL *head, WL elem) 2427wlist_add (WL *head, WL elem)
1750{ 2428{
1751 elem->next = *head; 2429 elem->next = *head;
1752 *head = elem; 2430 *head = elem;
1753} 2431}
1754 2432
1755void inline_size 2433inline_size void
1756wlist_del (WL *head, WL elem) 2434wlist_del (WL *head, WL elem)
1757{ 2435{
1758 while (*head) 2436 while (*head)
1759 { 2437 {
1760 if (*head == elem) 2438 if (expect_true (*head == elem))
1761 { 2439 {
1762 *head = elem->next; 2440 *head = elem->next;
1763 return; 2441 break;
1764 } 2442 }
1765 2443
1766 head = &(*head)->next; 2444 head = &(*head)->next;
1767 } 2445 }
1768} 2446}
1769 2447
1770void inline_speed 2448/* internal, faster, version of ev_clear_pending */
2449inline_speed void
1771clear_pending (EV_P_ W w) 2450clear_pending (EV_P_ W w)
1772{ 2451{
1773 if (w->pending) 2452 if (w->pending)
1774 { 2453 {
1775 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2454 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1776 w->pending = 0; 2455 w->pending = 0;
1777 } 2456 }
1778} 2457}
1779 2458
1780int 2459int
… …
1784 int pending = w_->pending; 2463 int pending = w_->pending;
1785 2464
1786 if (expect_true (pending)) 2465 if (expect_true (pending))
1787 { 2466 {
1788 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2467 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2468 p->w = (W)&pending_w;
1789 w_->pending = 0; 2469 w_->pending = 0;
1790 p->w = 0;
1791 return p->events; 2470 return p->events;
1792 } 2471 }
1793 else 2472 else
1794 return 0; 2473 return 0;
1795} 2474}
1796 2475
1797void inline_size 2476inline_size void
1798pri_adjust (EV_P_ W w) 2477pri_adjust (EV_P_ W w)
1799{ 2478{
1800 int pri = w->priority; 2479 int pri = ev_priority (w);
1801 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2480 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1802 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2481 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1803 w->priority = pri; 2482 ev_set_priority (w, pri);
1804} 2483}
1805 2484
1806void inline_speed 2485inline_speed void
1807ev_start (EV_P_ W w, int active) 2486ev_start (EV_P_ W w, int active)
1808{ 2487{
1809 pri_adjust (EV_A_ w); 2488 pri_adjust (EV_A_ w);
1810 w->active = active; 2489 w->active = active;
1811 ev_ref (EV_A); 2490 ev_ref (EV_A);
1812} 2491}
1813 2492
1814void inline_size 2493inline_size void
1815ev_stop (EV_P_ W w) 2494ev_stop (EV_P_ W w)
1816{ 2495{
1817 ev_unref (EV_A); 2496 ev_unref (EV_A);
1818 w->active = 0; 2497 w->active = 0;
1819} 2498}
… …
1826 int fd = w->fd; 2505 int fd = w->fd;
1827 2506
1828 if (expect_false (ev_is_active (w))) 2507 if (expect_false (ev_is_active (w)))
1829 return; 2508 return;
1830 2509
1831 assert (("ev_io_start called with negative fd", fd >= 0)); 2510 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2511 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2512
2513 EV_FREQUENT_CHECK;
1832 2514
1833 ev_start (EV_A_ (W)w, 1); 2515 ev_start (EV_A_ (W)w, 1);
1834 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2516 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1835 wlist_add (&anfds[fd].head, (WL)w); 2517 wlist_add (&anfds[fd].head, (WL)w);
1836 2518
1837 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2519 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1838 w->events &= ~EV_IOFDSET; 2520 w->events &= ~EV__IOFDSET;
2521
2522 EV_FREQUENT_CHECK;
1839} 2523}
1840 2524
1841void noinline 2525void noinline
1842ev_io_stop (EV_P_ ev_io *w) 2526ev_io_stop (EV_P_ ev_io *w)
1843{ 2527{
1844 clear_pending (EV_A_ (W)w); 2528 clear_pending (EV_A_ (W)w);
1845 if (expect_false (!ev_is_active (w))) 2529 if (expect_false (!ev_is_active (w)))
1846 return; 2530 return;
1847 2531
1848 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2532 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2533
2534 EV_FREQUENT_CHECK;
1849 2535
1850 wlist_del (&anfds[w->fd].head, (WL)w); 2536 wlist_del (&anfds[w->fd].head, (WL)w);
1851 ev_stop (EV_A_ (W)w); 2537 ev_stop (EV_A_ (W)w);
1852 2538
1853 fd_change (EV_A_ w->fd, 1); 2539 fd_change (EV_A_ w->fd, 1);
2540
2541 EV_FREQUENT_CHECK;
1854} 2542}
1855 2543
1856void noinline 2544void noinline
1857ev_timer_start (EV_P_ ev_timer *w) 2545ev_timer_start (EV_P_ ev_timer *w)
1858{ 2546{
1859 if (expect_false (ev_is_active (w))) 2547 if (expect_false (ev_is_active (w)))
1860 return; 2548 return;
1861 2549
1862 ((WT)w)->at += mn_now; 2550 ev_at (w) += mn_now;
1863 2551
1864 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2552 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1865 2553
2554 EV_FREQUENT_CHECK;
2555
2556 ++timercnt;
1866 ev_start (EV_A_ (W)w, ++timercnt); 2557 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1867 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2558 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1868 timers [timercnt - 1] = (WT)w; 2559 ANHE_w (timers [ev_active (w)]) = (WT)w;
1869 upheap (timers, timercnt - 1); 2560 ANHE_at_cache (timers [ev_active (w)]);
2561 upheap (timers, ev_active (w));
1870 2562
2563 EV_FREQUENT_CHECK;
2564
1871 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2565 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1872} 2566}
1873 2567
1874void noinline 2568void noinline
1875ev_timer_stop (EV_P_ ev_timer *w) 2569ev_timer_stop (EV_P_ ev_timer *w)
1876{ 2570{
1877 clear_pending (EV_A_ (W)w); 2571 clear_pending (EV_A_ (W)w);
1878 if (expect_false (!ev_is_active (w))) 2572 if (expect_false (!ev_is_active (w)))
1879 return; 2573 return;
1880 2574
1881 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2575 EV_FREQUENT_CHECK;
1882 2576
1883 { 2577 {
1884 int active = ((W)w)->active; 2578 int active = ev_active (w);
1885 2579
2580 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2581
2582 --timercnt;
2583
1886 if (expect_true (--active < --timercnt)) 2584 if (expect_true (active < timercnt + HEAP0))
1887 { 2585 {
1888 timers [active] = timers [timercnt]; 2586 timers [active] = timers [timercnt + HEAP0];
1889 adjustheap (timers, timercnt, active); 2587 adjustheap (timers, timercnt, active);
1890 } 2588 }
1891 } 2589 }
1892 2590
1893 ((WT)w)->at -= mn_now; 2591 EV_FREQUENT_CHECK;
2592
2593 ev_at (w) -= mn_now;
1894 2594
1895 ev_stop (EV_A_ (W)w); 2595 ev_stop (EV_A_ (W)w);
1896} 2596}
1897 2597
1898void noinline 2598void noinline
1899ev_timer_again (EV_P_ ev_timer *w) 2599ev_timer_again (EV_P_ ev_timer *w)
1900{ 2600{
2601 EV_FREQUENT_CHECK;
2602
1901 if (ev_is_active (w)) 2603 if (ev_is_active (w))
1902 { 2604 {
1903 if (w->repeat) 2605 if (w->repeat)
1904 { 2606 {
1905 ((WT)w)->at = mn_now + w->repeat; 2607 ev_at (w) = mn_now + w->repeat;
2608 ANHE_at_cache (timers [ev_active (w)]);
1906 adjustheap (timers, timercnt, ((W)w)->active - 1); 2609 adjustheap (timers, timercnt, ev_active (w));
1907 } 2610 }
1908 else 2611 else
1909 ev_timer_stop (EV_A_ w); 2612 ev_timer_stop (EV_A_ w);
1910 } 2613 }
1911 else if (w->repeat) 2614 else if (w->repeat)
1912 { 2615 {
1913 w->at = w->repeat; 2616 ev_at (w) = w->repeat;
1914 ev_timer_start (EV_A_ w); 2617 ev_timer_start (EV_A_ w);
1915 } 2618 }
2619
2620 EV_FREQUENT_CHECK;
2621}
2622
2623ev_tstamp
2624ev_timer_remaining (EV_P_ ev_timer *w)
2625{
2626 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1916} 2627}
1917 2628
1918#if EV_PERIODIC_ENABLE 2629#if EV_PERIODIC_ENABLE
1919void noinline 2630void noinline
1920ev_periodic_start (EV_P_ ev_periodic *w) 2631ev_periodic_start (EV_P_ ev_periodic *w)
1921{ 2632{
1922 if (expect_false (ev_is_active (w))) 2633 if (expect_false (ev_is_active (w)))
1923 return; 2634 return;
1924 2635
1925 if (w->reschedule_cb) 2636 if (w->reschedule_cb)
1926 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2637 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1927 else if (w->interval) 2638 else if (w->interval)
1928 { 2639 {
1929 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2640 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1930 /* this formula differs from the one in periodic_reify because we do not always round up */ 2641 /* this formula differs from the one in periodic_reify because we do not always round up */
1931 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1932 } 2643 }
1933 else 2644 else
1934 ((WT)w)->at = w->offset; 2645 ev_at (w) = w->offset;
1935 2646
2647 EV_FREQUENT_CHECK;
2648
2649 ++periodiccnt;
1936 ev_start (EV_A_ (W)w, ++periodiccnt); 2650 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1937 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2651 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1938 periodics [periodiccnt - 1] = (WT)w; 2652 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1939 upheap (periodics, periodiccnt - 1); 2653 ANHE_at_cache (periodics [ev_active (w)]);
2654 upheap (periodics, ev_active (w));
1940 2655
2656 EV_FREQUENT_CHECK;
2657
1941 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2658 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1942} 2659}
1943 2660
1944void noinline 2661void noinline
1945ev_periodic_stop (EV_P_ ev_periodic *w) 2662ev_periodic_stop (EV_P_ ev_periodic *w)
1946{ 2663{
1947 clear_pending (EV_A_ (W)w); 2664 clear_pending (EV_A_ (W)w);
1948 if (expect_false (!ev_is_active (w))) 2665 if (expect_false (!ev_is_active (w)))
1949 return; 2666 return;
1950 2667
1951 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2668 EV_FREQUENT_CHECK;
1952 2669
1953 { 2670 {
1954 int active = ((W)w)->active; 2671 int active = ev_active (w);
1955 2672
2673 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2674
2675 --periodiccnt;
2676
1956 if (expect_true (--active < --periodiccnt)) 2677 if (expect_true (active < periodiccnt + HEAP0))
1957 { 2678 {
1958 periodics [active] = periodics [periodiccnt]; 2679 periodics [active] = periodics [periodiccnt + HEAP0];
1959 adjustheap (periodics, periodiccnt, active); 2680 adjustheap (periodics, periodiccnt, active);
1960 } 2681 }
1961 } 2682 }
1962 2683
2684 EV_FREQUENT_CHECK;
2685
1963 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
1964} 2687}
1965 2688
1966void noinline 2689void noinline
1967ev_periodic_again (EV_P_ ev_periodic *w) 2690ev_periodic_again (EV_P_ ev_periodic *w)
… …
1977#endif 2700#endif
1978 2701
1979void noinline 2702void noinline
1980ev_signal_start (EV_P_ ev_signal *w) 2703ev_signal_start (EV_P_ ev_signal *w)
1981{ 2704{
1982#if EV_MULTIPLICITY
1983 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1984#endif
1985 if (expect_false (ev_is_active (w))) 2705 if (expect_false (ev_is_active (w)))
1986 return; 2706 return;
1987 2707
1988 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2708 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1989 2709
1990 evpipe_init (EV_A); 2710#if EV_MULTIPLICITY
2711 assert (("libev: a signal must not be attached to two different loops",
2712 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1991 2713
2714 signals [w->signum - 1].loop = EV_A;
2715#endif
2716
2717 EV_FREQUENT_CHECK;
2718
2719#if EV_USE_SIGNALFD
2720 if (sigfd == -2)
1992 { 2721 {
1993#ifndef _WIN32 2722 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1994 sigset_t full, prev; 2723 if (sigfd < 0 && errno == EINVAL)
1995 sigfillset (&full); 2724 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1996 sigprocmask (SIG_SETMASK, &full, &prev);
1997#endif
1998 2725
1999 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2726 if (sigfd >= 0)
2727 {
2728 fd_intern (sigfd); /* doing it twice will not hurt */
2000 2729
2001#ifndef _WIN32 2730 sigemptyset (&sigfd_set);
2002 sigprocmask (SIG_SETMASK, &prev, 0); 2731
2003#endif 2732 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2733 ev_set_priority (&sigfd_w, EV_MAXPRI);
2734 ev_io_start (EV_A_ &sigfd_w);
2735 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2736 }
2004 } 2737 }
2738
2739 if (sigfd >= 0)
2740 {
2741 /* TODO: check .head */
2742 sigaddset (&sigfd_set, w->signum);
2743 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2744
2745 signalfd (sigfd, &sigfd_set, 0);
2746 }
2747#endif
2005 2748
2006 ev_start (EV_A_ (W)w, 1); 2749 ev_start (EV_A_ (W)w, 1);
2007 wlist_add (&signals [w->signum - 1].head, (WL)w); 2750 wlist_add (&signals [w->signum - 1].head, (WL)w);
2008 2751
2009 if (!((WL)w)->next) 2752 if (!((WL)w)->next)
2753# if EV_USE_SIGNALFD
2754 if (sigfd < 0) /*TODO*/
2755# endif
2010 { 2756 {
2011#if _WIN32 2757# if _WIN32
2012 signal (w->signum, ev_sighandler); 2758 signal (w->signum, ev_sighandler);
2013#else 2759# else
2014 struct sigaction sa; 2760 struct sigaction sa;
2761
2762 evpipe_init (EV_A);
2763
2015 sa.sa_handler = ev_sighandler; 2764 sa.sa_handler = ev_sighandler;
2016 sigfillset (&sa.sa_mask); 2765 sigfillset (&sa.sa_mask);
2017 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2766 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2018 sigaction (w->signum, &sa, 0); 2767 sigaction (w->signum, &sa, 0);
2768
2769 sigemptyset (&sa.sa_mask);
2770 sigaddset (&sa.sa_mask, w->signum);
2771 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2019#endif 2772#endif
2020 } 2773 }
2774
2775 EV_FREQUENT_CHECK;
2021} 2776}
2022 2777
2023void noinline 2778void noinline
2024ev_signal_stop (EV_P_ ev_signal *w) 2779ev_signal_stop (EV_P_ ev_signal *w)
2025{ 2780{
2026 clear_pending (EV_A_ (W)w); 2781 clear_pending (EV_A_ (W)w);
2027 if (expect_false (!ev_is_active (w))) 2782 if (expect_false (!ev_is_active (w)))
2028 return; 2783 return;
2029 2784
2785 EV_FREQUENT_CHECK;
2786
2030 wlist_del (&signals [w->signum - 1].head, (WL)w); 2787 wlist_del (&signals [w->signum - 1].head, (WL)w);
2031 ev_stop (EV_A_ (W)w); 2788 ev_stop (EV_A_ (W)w);
2032 2789
2033 if (!signals [w->signum - 1].head) 2790 if (!signals [w->signum - 1].head)
2791 {
2792#if EV_MULTIPLICITY
2793 signals [w->signum - 1].loop = 0; /* unattach from signal */
2794#endif
2795#if EV_USE_SIGNALFD
2796 if (sigfd >= 0)
2797 {
2798 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2799 sigdelset (&sigfd_set, w->signum);
2800 signalfd (sigfd, &sigfd_set, 0);
2801 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2802 /*TODO: maybe unblock signal? */
2803 }
2804 else
2805#endif
2034 signal (w->signum, SIG_DFL); 2806 signal (w->signum, SIG_DFL);
2807 }
2808
2809 EV_FREQUENT_CHECK;
2035} 2810}
2036 2811
2037void 2812void
2038ev_child_start (EV_P_ ev_child *w) 2813ev_child_start (EV_P_ ev_child *w)
2039{ 2814{
2040#if EV_MULTIPLICITY 2815#if EV_MULTIPLICITY
2041 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));
2042#endif 2817#endif
2043 if (expect_false (ev_is_active (w))) 2818 if (expect_false (ev_is_active (w)))
2044 return; 2819 return;
2045 2820
2821 EV_FREQUENT_CHECK;
2822
2046 ev_start (EV_A_ (W)w, 1); 2823 ev_start (EV_A_ (W)w, 1);
2047 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;
2048} 2827}
2049 2828
2050void 2829void
2051ev_child_stop (EV_P_ ev_child *w) 2830ev_child_stop (EV_P_ ev_child *w)
2052{ 2831{
2053 clear_pending (EV_A_ (W)w); 2832 clear_pending (EV_A_ (W)w);
2054 if (expect_false (!ev_is_active (w))) 2833 if (expect_false (!ev_is_active (w)))
2055 return; 2834 return;
2056 2835
2836 EV_FREQUENT_CHECK;
2837
2057 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2058 ev_stop (EV_A_ (W)w); 2839 ev_stop (EV_A_ (W)w);
2840
2841 EV_FREQUENT_CHECK;
2059} 2842}
2060 2843
2061#if EV_STAT_ENABLE 2844#if EV_STAT_ENABLE
2062 2845
2063# ifdef _WIN32 2846# ifdef _WIN32
2064# undef lstat 2847# undef lstat
2065# define lstat(a,b) _stati64 (a,b) 2848# define lstat(a,b) _stati64 (a,b)
2066# endif 2849# endif
2067 2850
2068#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 */
2069#define MIN_STAT_INTERVAL 0.1074891 2853#define MIN_STAT_INTERVAL 0.1074891
2070 2854
2071static 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);
2072 2856
2073#if EV_USE_INOTIFY 2857#if EV_USE_INOTIFY
2074# define EV_INOTIFY_BUFSIZE 8192 2858# define EV_INOTIFY_BUFSIZE 8192
… …
2078{ 2862{
2079 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);
2080 2864
2081 if (w->wd < 0) 2865 if (w->wd < 0)
2082 { 2866 {
2867 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2083 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2868 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2084 2869
2085 /* monitor some parent directory for speedup hints */ 2870 /* monitor some parent directory for speedup hints */
2871 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2872 /* but an efficiency issue only */
2086 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2873 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2087 { 2874 {
2088 char path [4096]; 2875 char path [4096];
2089 strcpy (path, w->path); 2876 strcpy (path, w->path);
2090 2877
… …
2093 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2880 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2094 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2881 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2095 2882
2096 char *pend = strrchr (path, '/'); 2883 char *pend = strrchr (path, '/');
2097 2884
2098 if (!pend) 2885 if (!pend || pend == path)
2099 break; /* whoops, no '/', complain to your admin */ 2886 break;
2100 2887
2101 *pend = 0; 2888 *pend = 0;
2102 w->wd = inotify_add_watch (fs_fd, path, mask); 2889 w->wd = inotify_add_watch (fs_fd, path, mask);
2103 } 2890 }
2104 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2891 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2105 } 2892 }
2106 } 2893 }
2107 else
2108 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2109 2894
2110 if (w->wd >= 0) 2895 if (w->wd >= 0)
2896 {
2897 struct statfs sfs;
2898
2111 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2899 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2900
2901 /* now local changes will be tracked by inotify, but remote changes won't */
2902 /* unless the filesystem it known to be local, we therefore still poll */
2903 /* also do poll on <2.6.25, but with normal frequency */
2904
2905 if (fs_2625 && !statfs (w->path, &sfs))
2906 if (sfs.f_type == 0x1373 /* devfs */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */
2908 || sfs.f_type == 0x3153464a /* jfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */
2911 || sfs.f_type == 0x58465342 /* xfs */)
2912 return;
2913
2914 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2915 ev_timer_again (EV_A_ &w->timer);
2916 }
2112} 2917}
2113 2918
2114static void noinline 2919static void noinline
2115infy_del (EV_P_ ev_stat *w) 2920infy_del (EV_P_ ev_stat *w)
2116{ 2921{
… …
2130 2935
2131static void noinline 2936static void noinline
2132infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2937infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2133{ 2938{
2134 if (slot < 0) 2939 if (slot < 0)
2135 /* overflow, need to check for all hahs slots */ 2940 /* overflow, need to check for all hash slots */
2136 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2941 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2137 infy_wd (EV_A_ slot, wd, ev); 2942 infy_wd (EV_A_ slot, wd, ev);
2138 else 2943 else
2139 { 2944 {
2140 WL w_; 2945 WL w_;
… …
2146 2951
2147 if (w->wd == wd || wd == -1) 2952 if (w->wd == wd || wd == -1)
2148 { 2953 {
2149 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2954 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2150 { 2955 {
2956 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2151 w->wd = -1; 2957 w->wd = -1;
2152 infy_add (EV_A_ w); /* re-add, no matter what */ 2958 infy_add (EV_A_ w); /* re-add, no matter what */
2153 } 2959 }
2154 2960
2155 stat_timer_cb (EV_A_ &w->timer, 0); 2961 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2168 2974
2169 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2975 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2170 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2976 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2171} 2977}
2172 2978
2173void inline_size 2979inline_size void
2980check_2625 (EV_P)
2981{
2982 /* kernels < 2.6.25 are borked
2983 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2984 */
2985 struct utsname buf;
2986 int major, minor, micro;
2987
2988 if (uname (&buf))
2989 return;
2990
2991 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2992 return;
2993
2994 if (major < 2
2995 || (major == 2 && minor < 6)
2996 || (major == 2 && minor == 6 && micro < 25))
2997 return;
2998
2999 fs_2625 = 1;
3000}
3001
3002inline_size int
3003infy_newfd (void)
3004{
3005#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3006 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3007 if (fd >= 0)
3008 return fd;
3009#endif
3010 return inotify_init ();
3011}
3012
3013inline_size void
2174infy_init (EV_P) 3014infy_init (EV_P)
2175{ 3015{
2176 if (fs_fd != -2) 3016 if (fs_fd != -2)
2177 return; 3017 return;
2178 3018
3019 fs_fd = -1;
3020
3021 check_2625 (EV_A);
3022
2179 fs_fd = inotify_init (); 3023 fs_fd = infy_newfd ();
2180 3024
2181 if (fs_fd >= 0) 3025 if (fs_fd >= 0)
2182 { 3026 {
3027 fd_intern (fs_fd);
2183 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3028 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2184 ev_set_priority (&fs_w, EV_MAXPRI); 3029 ev_set_priority (&fs_w, EV_MAXPRI);
2185 ev_io_start (EV_A_ &fs_w); 3030 ev_io_start (EV_A_ &fs_w);
2186 } 3031 }
2187} 3032}
2188 3033
2189void inline_size 3034inline_size void
2190infy_fork (EV_P) 3035infy_fork (EV_P)
2191{ 3036{
2192 int slot; 3037 int slot;
2193 3038
2194 if (fs_fd < 0) 3039 if (fs_fd < 0)
2195 return; 3040 return;
2196 3041
3042 ev_io_stop (EV_A_ &fs_w);
2197 close (fs_fd); 3043 close (fs_fd);
2198 fs_fd = inotify_init (); 3044 fs_fd = infy_newfd ();
3045
3046 if (fs_fd >= 0)
3047 {
3048 fd_intern (fs_fd);
3049 ev_io_set (&fs_w, fs_fd, EV_READ);
3050 ev_io_start (EV_A_ &fs_w);
3051 }
2199 3052
2200 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3053 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2201 { 3054 {
2202 WL w_ = fs_hash [slot].head; 3055 WL w_ = fs_hash [slot].head;
2203 fs_hash [slot].head = 0; 3056 fs_hash [slot].head = 0;
… …
2210 w->wd = -1; 3063 w->wd = -1;
2211 3064
2212 if (fs_fd >= 0) 3065 if (fs_fd >= 0)
2213 infy_add (EV_A_ w); /* re-add, no matter what */ 3066 infy_add (EV_A_ w); /* re-add, no matter what */
2214 else 3067 else
2215 ev_timer_start (EV_A_ &w->timer); 3068 ev_timer_again (EV_A_ &w->timer);
2216 } 3069 }
2217
2218 } 3070 }
2219} 3071}
2220 3072
3073#endif
3074
3075#ifdef _WIN32
3076# define EV_LSTAT(p,b) _stati64 (p, b)
3077#else
3078# define EV_LSTAT(p,b) lstat (p, b)
2221#endif 3079#endif
2222 3080
2223void 3081void
2224ev_stat_stat (EV_P_ ev_stat *w) 3082ev_stat_stat (EV_P_ ev_stat *w)
2225{ 3083{
… …
2252 || w->prev.st_atime != w->attr.st_atime 3110 || w->prev.st_atime != w->attr.st_atime
2253 || w->prev.st_mtime != w->attr.st_mtime 3111 || w->prev.st_mtime != w->attr.st_mtime
2254 || w->prev.st_ctime != w->attr.st_ctime 3112 || w->prev.st_ctime != w->attr.st_ctime
2255 ) { 3113 ) {
2256 #if EV_USE_INOTIFY 3114 #if EV_USE_INOTIFY
3115 if (fs_fd >= 0)
3116 {
2257 infy_del (EV_A_ w); 3117 infy_del (EV_A_ w);
2258 infy_add (EV_A_ w); 3118 infy_add (EV_A_ w);
2259 ev_stat_stat (EV_A_ w); /* avoid race... */ 3119 ev_stat_stat (EV_A_ w); /* avoid race... */
3120 }
2260 #endif 3121 #endif
2261 3122
2262 ev_feed_event (EV_A_ w, EV_STAT); 3123 ev_feed_event (EV_A_ w, EV_STAT);
2263 } 3124 }
2264} 3125}
… …
2267ev_stat_start (EV_P_ ev_stat *w) 3128ev_stat_start (EV_P_ ev_stat *w)
2268{ 3129{
2269 if (expect_false (ev_is_active (w))) 3130 if (expect_false (ev_is_active (w)))
2270 return; 3131 return;
2271 3132
2272 /* since we use memcmp, we need to clear any padding data etc. */
2273 memset (&w->prev, 0, sizeof (ev_statdata));
2274 memset (&w->attr, 0, sizeof (ev_statdata));
2275
2276 ev_stat_stat (EV_A_ w); 3133 ev_stat_stat (EV_A_ w);
2277 3134
3135 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2278 if (w->interval < MIN_STAT_INTERVAL) 3136 w->interval = MIN_STAT_INTERVAL;
2279 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2280 3137
2281 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3138 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2282 ev_set_priority (&w->timer, ev_priority (w)); 3139 ev_set_priority (&w->timer, ev_priority (w));
2283 3140
2284#if EV_USE_INOTIFY 3141#if EV_USE_INOTIFY
2285 infy_init (EV_A); 3142 infy_init (EV_A);
2286 3143
2287 if (fs_fd >= 0) 3144 if (fs_fd >= 0)
2288 infy_add (EV_A_ w); 3145 infy_add (EV_A_ w);
2289 else 3146 else
2290#endif 3147#endif
2291 ev_timer_start (EV_A_ &w->timer); 3148 ev_timer_again (EV_A_ &w->timer);
2292 3149
2293 ev_start (EV_A_ (W)w, 1); 3150 ev_start (EV_A_ (W)w, 1);
3151
3152 EV_FREQUENT_CHECK;
2294} 3153}
2295 3154
2296void 3155void
2297ev_stat_stop (EV_P_ ev_stat *w) 3156ev_stat_stop (EV_P_ ev_stat *w)
2298{ 3157{
2299 clear_pending (EV_A_ (W)w); 3158 clear_pending (EV_A_ (W)w);
2300 if (expect_false (!ev_is_active (w))) 3159 if (expect_false (!ev_is_active (w)))
2301 return; 3160 return;
2302 3161
3162 EV_FREQUENT_CHECK;
3163
2303#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2304 infy_del (EV_A_ w); 3165 infy_del (EV_A_ w);
2305#endif 3166#endif
2306 ev_timer_stop (EV_A_ &w->timer); 3167 ev_timer_stop (EV_A_ &w->timer);
2307 3168
2308 ev_stop (EV_A_ (W)w); 3169 ev_stop (EV_A_ (W)w);
3170
3171 EV_FREQUENT_CHECK;
2309} 3172}
2310#endif 3173#endif
2311 3174
2312#if EV_IDLE_ENABLE 3175#if EV_IDLE_ENABLE
2313void 3176void
… …
2315{ 3178{
2316 if (expect_false (ev_is_active (w))) 3179 if (expect_false (ev_is_active (w)))
2317 return; 3180 return;
2318 3181
2319 pri_adjust (EV_A_ (W)w); 3182 pri_adjust (EV_A_ (W)w);
3183
3184 EV_FREQUENT_CHECK;
2320 3185
2321 { 3186 {
2322 int active = ++idlecnt [ABSPRI (w)]; 3187 int active = ++idlecnt [ABSPRI (w)];
2323 3188
2324 ++idleall; 3189 ++idleall;
2325 ev_start (EV_A_ (W)w, active); 3190 ev_start (EV_A_ (W)w, active);
2326 3191
2327 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3192 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2328 idles [ABSPRI (w)][active - 1] = w; 3193 idles [ABSPRI (w)][active - 1] = w;
2329 } 3194 }
3195
3196 EV_FREQUENT_CHECK;
2330} 3197}
2331 3198
2332void 3199void
2333ev_idle_stop (EV_P_ ev_idle *w) 3200ev_idle_stop (EV_P_ ev_idle *w)
2334{ 3201{
2335 clear_pending (EV_A_ (W)w); 3202 clear_pending (EV_A_ (W)w);
2336 if (expect_false (!ev_is_active (w))) 3203 if (expect_false (!ev_is_active (w)))
2337 return; 3204 return;
2338 3205
3206 EV_FREQUENT_CHECK;
3207
2339 { 3208 {
2340 int active = ((W)w)->active; 3209 int active = ev_active (w);
2341 3210
2342 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3211 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2343 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3212 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2344 3213
2345 ev_stop (EV_A_ (W)w); 3214 ev_stop (EV_A_ (W)w);
2346 --idleall; 3215 --idleall;
2347 } 3216 }
3217
3218 EV_FREQUENT_CHECK;
2348} 3219}
2349#endif 3220#endif
2350 3221
2351void 3222void
2352ev_prepare_start (EV_P_ ev_prepare *w) 3223ev_prepare_start (EV_P_ ev_prepare *w)
2353{ 3224{
2354 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2355 return; 3226 return;
3227
3228 EV_FREQUENT_CHECK;
2356 3229
2357 ev_start (EV_A_ (W)w, ++preparecnt); 3230 ev_start (EV_A_ (W)w, ++preparecnt);
2358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3231 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2359 prepares [preparecnt - 1] = w; 3232 prepares [preparecnt - 1] = w;
3233
3234 EV_FREQUENT_CHECK;
2360} 3235}
2361 3236
2362void 3237void
2363ev_prepare_stop (EV_P_ ev_prepare *w) 3238ev_prepare_stop (EV_P_ ev_prepare *w)
2364{ 3239{
2365 clear_pending (EV_A_ (W)w); 3240 clear_pending (EV_A_ (W)w);
2366 if (expect_false (!ev_is_active (w))) 3241 if (expect_false (!ev_is_active (w)))
2367 return; 3242 return;
2368 3243
3244 EV_FREQUENT_CHECK;
3245
2369 { 3246 {
2370 int active = ((W)w)->active; 3247 int active = ev_active (w);
3248
2371 prepares [active - 1] = prepares [--preparecnt]; 3249 prepares [active - 1] = prepares [--preparecnt];
2372 ((W)prepares [active - 1])->active = active; 3250 ev_active (prepares [active - 1]) = active;
2373 } 3251 }
2374 3252
2375 ev_stop (EV_A_ (W)w); 3253 ev_stop (EV_A_ (W)w);
3254
3255 EV_FREQUENT_CHECK;
2376} 3256}
2377 3257
2378void 3258void
2379ev_check_start (EV_P_ ev_check *w) 3259ev_check_start (EV_P_ ev_check *w)
2380{ 3260{
2381 if (expect_false (ev_is_active (w))) 3261 if (expect_false (ev_is_active (w)))
2382 return; 3262 return;
3263
3264 EV_FREQUENT_CHECK;
2383 3265
2384 ev_start (EV_A_ (W)w, ++checkcnt); 3266 ev_start (EV_A_ (W)w, ++checkcnt);
2385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3267 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2386 checks [checkcnt - 1] = w; 3268 checks [checkcnt - 1] = w;
3269
3270 EV_FREQUENT_CHECK;
2387} 3271}
2388 3272
2389void 3273void
2390ev_check_stop (EV_P_ ev_check *w) 3274ev_check_stop (EV_P_ ev_check *w)
2391{ 3275{
2392 clear_pending (EV_A_ (W)w); 3276 clear_pending (EV_A_ (W)w);
2393 if (expect_false (!ev_is_active (w))) 3277 if (expect_false (!ev_is_active (w)))
2394 return; 3278 return;
2395 3279
3280 EV_FREQUENT_CHECK;
3281
2396 { 3282 {
2397 int active = ((W)w)->active; 3283 int active = ev_active (w);
3284
2398 checks [active - 1] = checks [--checkcnt]; 3285 checks [active - 1] = checks [--checkcnt];
2399 ((W)checks [active - 1])->active = active; 3286 ev_active (checks [active - 1]) = active;
2400 } 3287 }
2401 3288
2402 ev_stop (EV_A_ (W)w); 3289 ev_stop (EV_A_ (W)w);
3290
3291 EV_FREQUENT_CHECK;
2403} 3292}
2404 3293
2405#if EV_EMBED_ENABLE 3294#if EV_EMBED_ENABLE
2406void noinline 3295void noinline
2407ev_embed_sweep (EV_P_ ev_embed *w) 3296ev_embed_sweep (EV_P_ ev_embed *w)
… …
2424embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3313embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2425{ 3314{
2426 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3315 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2427 3316
2428 { 3317 {
2429 struct ev_loop *loop = w->other; 3318 EV_P = w->other;
2430 3319
2431 while (fdchangecnt) 3320 while (fdchangecnt)
2432 { 3321 {
2433 fd_reify (EV_A); 3322 fd_reify (EV_A);
2434 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3323 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2435 } 3324 }
2436 } 3325 }
2437} 3326}
2438 3327
3328static void
3329embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3330{
3331 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3332
3333 ev_embed_stop (EV_A_ w);
3334
3335 {
3336 EV_P = w->other;
3337
3338 ev_loop_fork (EV_A);
3339 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3340 }
3341
3342 ev_embed_start (EV_A_ w);
3343}
3344
2439#if 0 3345#if 0
2440static void 3346static void
2441embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3347embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2442{ 3348{
2443 ev_idle_stop (EV_A_ idle); 3349 ev_idle_stop (EV_A_ idle);
… …
2449{ 3355{
2450 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2451 return; 3357 return;
2452 3358
2453 { 3359 {
2454 struct ev_loop *loop = w->other; 3360 EV_P = w->other;
2455 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3361 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2456 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3362 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2457 } 3363 }
3364
3365 EV_FREQUENT_CHECK;
2458 3366
2459 ev_set_priority (&w->io, ev_priority (w)); 3367 ev_set_priority (&w->io, ev_priority (w));
2460 ev_io_start (EV_A_ &w->io); 3368 ev_io_start (EV_A_ &w->io);
2461 3369
2462 ev_prepare_init (&w->prepare, embed_prepare_cb); 3370 ev_prepare_init (&w->prepare, embed_prepare_cb);
2463 ev_set_priority (&w->prepare, EV_MINPRI); 3371 ev_set_priority (&w->prepare, EV_MINPRI);
2464 ev_prepare_start (EV_A_ &w->prepare); 3372 ev_prepare_start (EV_A_ &w->prepare);
2465 3373
3374 ev_fork_init (&w->fork, embed_fork_cb);
3375 ev_fork_start (EV_A_ &w->fork);
3376
2466 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3377 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2467 3378
2468 ev_start (EV_A_ (W)w, 1); 3379 ev_start (EV_A_ (W)w, 1);
3380
3381 EV_FREQUENT_CHECK;
2469} 3382}
2470 3383
2471void 3384void
2472ev_embed_stop (EV_P_ ev_embed *w) 3385ev_embed_stop (EV_P_ ev_embed *w)
2473{ 3386{
2474 clear_pending (EV_A_ (W)w); 3387 clear_pending (EV_A_ (W)w);
2475 if (expect_false (!ev_is_active (w))) 3388 if (expect_false (!ev_is_active (w)))
2476 return; 3389 return;
2477 3390
3391 EV_FREQUENT_CHECK;
3392
2478 ev_io_stop (EV_A_ &w->io); 3393 ev_io_stop (EV_A_ &w->io);
2479 ev_prepare_stop (EV_A_ &w->prepare); 3394 ev_prepare_stop (EV_A_ &w->prepare);
3395 ev_fork_stop (EV_A_ &w->fork);
2480 3396
2481 ev_stop (EV_A_ (W)w); 3397 EV_FREQUENT_CHECK;
2482} 3398}
2483#endif 3399#endif
2484 3400
2485#if EV_FORK_ENABLE 3401#if EV_FORK_ENABLE
2486void 3402void
2487ev_fork_start (EV_P_ ev_fork *w) 3403ev_fork_start (EV_P_ ev_fork *w)
2488{ 3404{
2489 if (expect_false (ev_is_active (w))) 3405 if (expect_false (ev_is_active (w)))
2490 return; 3406 return;
3407
3408 EV_FREQUENT_CHECK;
2491 3409
2492 ev_start (EV_A_ (W)w, ++forkcnt); 3410 ev_start (EV_A_ (W)w, ++forkcnt);
2493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3411 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2494 forks [forkcnt - 1] = w; 3412 forks [forkcnt - 1] = w;
3413
3414 EV_FREQUENT_CHECK;
2495} 3415}
2496 3416
2497void 3417void
2498ev_fork_stop (EV_P_ ev_fork *w) 3418ev_fork_stop (EV_P_ ev_fork *w)
2499{ 3419{
2500 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2502 return; 3422 return;
2503 3423
3424 EV_FREQUENT_CHECK;
3425
2504 { 3426 {
2505 int active = ((W)w)->active; 3427 int active = ev_active (w);
3428
2506 forks [active - 1] = forks [--forkcnt]; 3429 forks [active - 1] = forks [--forkcnt];
2507 ((W)forks [active - 1])->active = active; 3430 ev_active (forks [active - 1]) = active;
2508 } 3431 }
2509 3432
2510 ev_stop (EV_A_ (W)w); 3433 ev_stop (EV_A_ (W)w);
3434
3435 EV_FREQUENT_CHECK;
2511} 3436}
2512#endif 3437#endif
2513 3438
2514#if EV_ASYNC_ENABLE 3439#if EV_ASYNC_ENABLE
2515void 3440void
… …
2517{ 3442{
2518 if (expect_false (ev_is_active (w))) 3443 if (expect_false (ev_is_active (w)))
2519 return; 3444 return;
2520 3445
2521 evpipe_init (EV_A); 3446 evpipe_init (EV_A);
3447
3448 EV_FREQUENT_CHECK;
2522 3449
2523 ev_start (EV_A_ (W)w, ++asynccnt); 3450 ev_start (EV_A_ (W)w, ++asynccnt);
2524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3451 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2525 asyncs [asynccnt - 1] = w; 3452 asyncs [asynccnt - 1] = w;
3453
3454 EV_FREQUENT_CHECK;
2526} 3455}
2527 3456
2528void 3457void
2529ev_async_stop (EV_P_ ev_async *w) 3458ev_async_stop (EV_P_ ev_async *w)
2530{ 3459{
2531 clear_pending (EV_A_ (W)w); 3460 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 3461 if (expect_false (!ev_is_active (w)))
2533 return; 3462 return;
2534 3463
3464 EV_FREQUENT_CHECK;
3465
2535 { 3466 {
2536 int active = ((W)w)->active; 3467 int active = ev_active (w);
3468
2537 asyncs [active - 1] = asyncs [--asynccnt]; 3469 asyncs [active - 1] = asyncs [--asynccnt];
2538 ((W)asyncs [active - 1])->active = active; 3470 ev_active (asyncs [active - 1]) = active;
2539 } 3471 }
2540 3472
2541 ev_stop (EV_A_ (W)w); 3473 ev_stop (EV_A_ (W)w);
3474
3475 EV_FREQUENT_CHECK;
2542} 3476}
2543 3477
2544void 3478void
2545ev_async_send (EV_P_ ev_async *w) 3479ev_async_send (EV_P_ ev_async *w)
2546{ 3480{
2547 w->sent = 1; 3481 w->sent = 1;
2548 evpipe_write (EV_A_ &gotasync); 3482 evpipe_write (EV_A_ &async_pending);
2549} 3483}
2550#endif 3484#endif
2551 3485
2552/*****************************************************************************/ 3486/*****************************************************************************/
2553 3487
… …
2563once_cb (EV_P_ struct ev_once *once, int revents) 3497once_cb (EV_P_ struct ev_once *once, int revents)
2564{ 3498{
2565 void (*cb)(int revents, void *arg) = once->cb; 3499 void (*cb)(int revents, void *arg) = once->cb;
2566 void *arg = once->arg; 3500 void *arg = once->arg;
2567 3501
2568 ev_io_stop (EV_A_ &once->io); 3502 ev_io_stop (EV_A_ &once->io);
2569 ev_timer_stop (EV_A_ &once->to); 3503 ev_timer_stop (EV_A_ &once->to);
2570 ev_free (once); 3504 ev_free (once);
2571 3505
2572 cb (revents, arg); 3506 cb (revents, arg);
2573} 3507}
2574 3508
2575static void 3509static void
2576once_cb_io (EV_P_ ev_io *w, int revents) 3510once_cb_io (EV_P_ ev_io *w, int revents)
2577{ 3511{
2578 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3512 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3513
3514 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2579} 3515}
2580 3516
2581static void 3517static void
2582once_cb_to (EV_P_ ev_timer *w, int revents) 3518once_cb_to (EV_P_ ev_timer *w, int revents)
2583{ 3519{
2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3520 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3521
3522 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2585} 3523}
2586 3524
2587void 3525void
2588ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3526ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2589{ 3527{
… …
2611 ev_timer_set (&once->to, timeout, 0.); 3549 ev_timer_set (&once->to, timeout, 0.);
2612 ev_timer_start (EV_A_ &once->to); 3550 ev_timer_start (EV_A_ &once->to);
2613 } 3551 }
2614} 3552}
2615 3553
3554/*****************************************************************************/
3555
3556#if EV_WALK_ENABLE
3557void
3558ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3559{
3560 int i, j;
3561 ev_watcher_list *wl, *wn;
3562
3563 if (types & (EV_IO | EV_EMBED))
3564 for (i = 0; i < anfdmax; ++i)
3565 for (wl = anfds [i].head; wl; )
3566 {
3567 wn = wl->next;
3568
3569#if EV_EMBED_ENABLE
3570 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3571 {
3572 if (types & EV_EMBED)
3573 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3574 }
3575 else
3576#endif
3577#if EV_USE_INOTIFY
3578 if (ev_cb ((ev_io *)wl) == infy_cb)
3579 ;
3580 else
3581#endif
3582 if ((ev_io *)wl != &pipe_w)
3583 if (types & EV_IO)
3584 cb (EV_A_ EV_IO, wl);
3585
3586 wl = wn;
3587 }
3588
3589 if (types & (EV_TIMER | EV_STAT))
3590 for (i = timercnt + HEAP0; i-- > HEAP0; )
3591#if EV_STAT_ENABLE
3592 /*TODO: timer is not always active*/
3593 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3594 {
3595 if (types & EV_STAT)
3596 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3597 }
3598 else
3599#endif
3600 if (types & EV_TIMER)
3601 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3602
3603#if EV_PERIODIC_ENABLE
3604 if (types & EV_PERIODIC)
3605 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3606 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3607#endif
3608
3609#if EV_IDLE_ENABLE
3610 if (types & EV_IDLE)
3611 for (j = NUMPRI; i--; )
3612 for (i = idlecnt [j]; i--; )
3613 cb (EV_A_ EV_IDLE, idles [j][i]);
3614#endif
3615
3616#if EV_FORK_ENABLE
3617 if (types & EV_FORK)
3618 for (i = forkcnt; i--; )
3619 if (ev_cb (forks [i]) != embed_fork_cb)
3620 cb (EV_A_ EV_FORK, forks [i]);
3621#endif
3622
3623#if EV_ASYNC_ENABLE
3624 if (types & EV_ASYNC)
3625 for (i = asynccnt; i--; )
3626 cb (EV_A_ EV_ASYNC, asyncs [i]);
3627#endif
3628
3629 if (types & EV_PREPARE)
3630 for (i = preparecnt; i--; )
3631#if EV_EMBED_ENABLE
3632 if (ev_cb (prepares [i]) != embed_prepare_cb)
3633#endif
3634 cb (EV_A_ EV_PREPARE, prepares [i]);
3635
3636 if (types & EV_CHECK)
3637 for (i = checkcnt; i--; )
3638 cb (EV_A_ EV_CHECK, checks [i]);
3639
3640 if (types & EV_SIGNAL)
3641 for (i = 0; i < EV_NSIG - 1; ++i)
3642 for (wl = signals [i].head; wl; )
3643 {
3644 wn = wl->next;
3645 cb (EV_A_ EV_SIGNAL, wl);
3646 wl = wn;
3647 }
3648
3649 if (types & EV_CHILD)
3650 for (i = EV_PID_HASHSIZE; i--; )
3651 for (wl = childs [i]; wl; )
3652 {
3653 wn = wl->next;
3654 cb (EV_A_ EV_CHILD, wl);
3655 wl = wn;
3656 }
3657/* EV_STAT 0x00001000 /* stat data changed */
3658/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3659}
3660#endif
3661
2616#if EV_MULTIPLICITY 3662#if EV_MULTIPLICITY
2617 #include "ev_wrap.h" 3663 #include "ev_wrap.h"
2618#endif 3664#endif
2619 3665
2620#ifdef __cplusplus 3666#ifdef __cplusplus

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