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Comparing libev/ev.c (file contents):
Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 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 *
39 39
40#ifdef __cplusplus 40#ifdef __cplusplus
41extern "C" { 41extern "C" {
42#endif 42#endif
43 43
44/* this big block deduces configuration from config.h */
44#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 47# include EV_CONFIG_H
47# else 48# else
48# include "config.h" 49# include "config.h"
49# endif 50# endif
50 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
51# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
54# endif 69# endif
55# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
57# endif 72# endif
58# else 73# else
59# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
61# endif 76# endif
118# else 133# else
119# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
120# endif 135# endif
121# endif 136# endif
122 137
138# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif
145
123#endif 146#endif
124 147
125#include <math.h> 148#include <math.h>
126#include <stdlib.h> 149#include <stdlib.h>
127#include <fcntl.h> 150#include <fcntl.h>
145#ifndef _WIN32 168#ifndef _WIN32
146# include <sys/time.h> 169# include <sys/time.h>
147# include <sys/wait.h> 170# include <sys/wait.h>
148# include <unistd.h> 171# include <unistd.h>
149#else 172#else
173# include <io.h>
150# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
151# include <windows.h> 175# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
154# endif 178# endif
155#endif 179#endif
156 180
157/**/ 181/* this block tries to deduce configuration from header-defined symbols and defaults */
182
183#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1
186# else
187# define EV_USE_CLOCK_SYSCALL 0
188# endif
189#endif
158 190
159#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1
194# else
160# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
161#endif 197#endif
162 198
163#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165#endif 201#endif
166 202
167#ifndef EV_USE_NANOSLEEP 203#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1
206# else
168# define EV_USE_NANOSLEEP 0 207# define EV_USE_NANOSLEEP 0
208# endif
169#endif 209#endif
170 210
171#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
173#endif 213#endif
179# define EV_USE_POLL 1 219# define EV_USE_POLL 1
180# endif 220# endif
181#endif 221#endif
182 222
183#ifndef EV_USE_EPOLL 223#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1
226# else
184# define EV_USE_EPOLL 0 227# define EV_USE_EPOLL 0
228# endif
185#endif 229#endif
186 230
187#ifndef EV_USE_KQUEUE 231#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 232# define EV_USE_KQUEUE 0
189#endif 233#endif
191#ifndef EV_USE_PORT 235#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 236# define EV_USE_PORT 0
193#endif 237#endif
194 238
195#ifndef EV_USE_INOTIFY 239#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1
242# else
196# define EV_USE_INOTIFY 0 243# define EV_USE_INOTIFY 0
244# endif
197#endif 245#endif
198 246
199#ifndef EV_PID_HASHSIZE 247#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 248# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 249# define EV_PID_HASHSIZE 1
210# else 258# else
211# define EV_INOTIFY_HASHSIZE 16 259# define EV_INOTIFY_HASHSIZE 16
212# endif 260# endif
213#endif 261#endif
214 262
215/**/ 263#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1
266# else
267# define EV_USE_EVENTFD 0
268# endif
269#endif
270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216 304
217#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
220#endif 308#endif
234# include <sys/select.h> 322# include <sys/select.h>
235# endif 323# endif
236#endif 324#endif
237 325
238#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
239# include <sys/inotify.h> 329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
240#endif 335#endif
241 336
242#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 338# include <winsock.h>
244#endif 339#endif
245 340
341#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h>
344# ifdef __cplusplus
345extern "C" {
346# endif
347int eventfd (unsigned int initval, int flags);
348# ifdef __cplusplus
349}
350# endif
351#endif
352
246/**/ 353/**/
354
355#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
357#else
358# define EV_FREQUENT_CHECK do { } while (0)
359#endif
247 360
248/* 361/*
249 * This is used to avoid floating point rounding problems. 362 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics 363 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding 364 * to ensure progress, time-wise, even when rounding
263# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
265#else 378#else
266# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
267# define noinline 380# define noinline
268# if __STDC_VERSION__ < 199901L 381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 382# define inline
270# endif 383# endif
271#endif 384#endif
272 385
273#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
288 401
289typedef ev_watcher *W; 402typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 403typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
292 405
293#if EV_USE_MONOTONIC 406#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at
408
409#if EV_USE_REALTIME
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 410/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */ 411/* giving it a reasonably high chance of working on typical architetcures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif
414
415#if EV_USE_MONOTONIC
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif 417#endif
298 418
299#ifdef _WIN32 419#ifdef _WIN32
300# include "ev_win32.c" 420# include "ev_win32.c"
309{ 429{
310 syserr_cb = cb; 430 syserr_cb = cb;
311} 431}
312 432
313static void noinline 433static void noinline
314syserr (const char *msg) 434ev_syserr (const char *msg)
315{ 435{
316 if (!msg) 436 if (!msg)
317 msg = "(libev) system error"; 437 msg = "(libev) system error";
318 438
319 if (syserr_cb) 439 if (syserr_cb)
323 perror (msg); 443 perror (msg);
324 abort (); 444 abort ();
325 } 445 }
326} 446}
327 447
448static void *
449ev_realloc_emul (void *ptr, long size)
450{
451 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and
453 * the single unix specification, so work around them here.
454 */
455
456 if (size)
457 return realloc (ptr, size);
458
459 free (ptr);
460 return 0;
461}
462
328static void *(*alloc)(void *ptr, long size); 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 464
330void 465void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 467{
333 alloc = cb; 468 alloc = cb;
334} 469}
335 470
336inline_speed void * 471inline_speed void *
337ev_realloc (void *ptr, long size) 472ev_realloc (void *ptr, long size)
338{ 473{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 474 ptr = alloc (ptr, size);
340 475
341 if (!ptr && size) 476 if (!ptr && size)
342 { 477 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 479 abort ();
350#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
352 487
353/*****************************************************************************/ 488/*****************************************************************************/
354 489
490/* file descriptor info structure */
355typedef struct 491typedef struct
356{ 492{
357 WL head; 493 WL head;
358 unsigned char events; 494 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
360#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle; 502 SOCKET handle;
362#endif 503#endif
363} ANFD; 504} ANFD;
364 505
506/* stores the pending event set for a given watcher */
365typedef struct 507typedef struct
366{ 508{
367 W w; 509 W w;
368 int events; 510 int events; /* the pending event set for the given watcher */
369} ANPENDING; 511} ANPENDING;
370 512
371#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
372typedef struct 515typedef struct
373{ 516{
374 WL head; 517 WL head;
375} ANFS; 518} ANFS;
519#endif
520
521/* Heap Entry */
522#if EV_HEAP_CACHE_AT
523 /* a heap element */
524 typedef struct {
525 ev_tstamp at;
526 WT w;
527 } ANHE;
528
529 #define ANHE_w(he) (he).w /* access watcher, read-write */
530 #define ANHE_at(he) (he).at /* access cached at, read-only */
531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
532#else
533 /* a heap element */
534 typedef WT ANHE;
535
536 #define ANHE_w(he) (he)
537 #define ANHE_at(he) (he)->at
538 #define ANHE_at_cache(he)
376#endif 539#endif
377 540
378#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
379 542
380 struct ev_loop 543 struct ev_loop
401 564
402#endif 565#endif
403 566
404/*****************************************************************************/ 567/*****************************************************************************/
405 568
569#ifndef EV_HAVE_EV_TIME
406ev_tstamp 570ev_tstamp
407ev_time (void) 571ev_time (void)
408{ 572{
409#if EV_USE_REALTIME 573#if EV_USE_REALTIME
574 if (expect_true (have_realtime))
575 {
410 struct timespec ts; 576 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 577 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 578 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 579 }
580#endif
581
414 struct timeval tv; 582 struct timeval tv;
415 gettimeofday (&tv, 0); 583 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 584 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 585}
586#endif
419 587
420ev_tstamp inline_size 588inline_size ev_tstamp
421get_clock (void) 589get_clock (void)
422{ 590{
423#if EV_USE_MONOTONIC 591#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 592 if (expect_true (have_monotonic))
425 { 593 {
451 ts.tv_sec = (time_t)delay; 619 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 621
454 nanosleep (&ts, 0); 622 nanosleep (&ts, 0);
455#elif defined(_WIN32) 623#elif defined(_WIN32)
456 Sleep (delay * 1e3); 624 Sleep ((unsigned long)(delay * 1e3));
457#else 625#else
458 struct timeval tv; 626 struct timeval tv;
459 627
460 tv.tv_sec = (time_t)delay; 628 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462 630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */
463 select (0, 0, 0, 0, &tv); 634 select (0, 0, 0, 0, &tv);
464#endif 635#endif
465 } 636 }
466} 637}
467 638
468/*****************************************************************************/ 639/*****************************************************************************/
469 640
470int inline_size 641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642
643/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */
645inline_size int
471array_nextsize (int elem, int cur, int cnt) 646array_nextsize (int elem, int cur, int cnt)
472{ 647{
473 int ncur = cur + 1; 648 int ncur = cur + 1;
474 649
475 do 650 do
476 ncur <<= 1; 651 ncur <<= 1;
477 while (cnt > ncur); 652 while (cnt > ncur);
478 653
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 656 {
482 ncur *= elem; 657 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 659 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 660 ncur /= elem;
486 } 661 }
487 662
488 return ncur; 663 return ncur;
492array_realloc (int elem, void *base, int *cur, int cnt) 667array_realloc (int elem, void *base, int *cur, int cnt)
493{ 668{
494 *cur = array_nextsize (elem, *cur, cnt); 669 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 670 return ev_realloc (base, elem * *cur);
496} 671}
672
673#define array_init_zero(base,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 675
498#define array_needsize(type,base,cur,cnt,init) \ 676#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 677 if (expect_false ((cnt) > (cur))) \
500 { \ 678 { \
501 int ocur_ = (cur); \ 679 int ocur_ = (cur); \
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 691 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 692 }
515#endif 693#endif
516 694
517#define array_free(stem, idx) \ 695#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 697
520/*****************************************************************************/ 698/*****************************************************************************/
699
700/* dummy callback for pending events */
701static void noinline
702pendingcb (EV_P_ ev_prepare *w, int revents)
703{
704}
521 705
522void noinline 706void noinline
523ev_feed_event (EV_P_ void *w, int revents) 707ev_feed_event (EV_P_ void *w, int revents)
524{ 708{
525 W w_ = (W)w; 709 W w_ = (W)w;
534 pendings [pri][w_->pending - 1].w = w_; 718 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 719 pendings [pri][w_->pending - 1].events = revents;
536 } 720 }
537} 721}
538 722
539void inline_speed 723inline_speed void
724feed_reverse (EV_P_ W w)
725{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
727 rfeeds [rfeedcnt++] = w;
728}
729
730inline_size void
731feed_reverse_done (EV_P_ int revents)
732{
733 do
734 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
735 while (rfeedcnt);
736}
737
738inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 739queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 740{
542 int i; 741 int i;
543 742
544 for (i = 0; i < eventcnt; ++i) 743 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 744 ev_feed_event (EV_A_ events [i], type);
546} 745}
547 746
548/*****************************************************************************/ 747/*****************************************************************************/
549 748
550void inline_size 749inline_speed void
551anfds_init (ANFD *base, int count)
552{
553 while (count--)
554 {
555 base->head = 0;
556 base->events = EV_NONE;
557 base->reify = 0;
558
559 ++base;
560 }
561}
562
563void inline_speed
564fd_event (EV_P_ int fd, int revents) 750fd_event (EV_P_ int fd, int revents)
565{ 751{
566 ANFD *anfd = anfds + fd; 752 ANFD *anfd = anfds + fd;
567 ev_io *w; 753 ev_io *w;
568 754
580{ 766{
581 if (fd >= 0 && fd < anfdmax) 767 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 768 fd_event (EV_A_ fd, revents);
583} 769}
584 770
585void inline_size 771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */
773inline_size void
586fd_reify (EV_P) 774fd_reify (EV_P)
587{ 775{
588 int i; 776 int i;
589 777
590 for (i = 0; i < fdchangecnt; ++i) 778 for (i = 0; i < fdchangecnt; ++i)
599 events |= (unsigned char)w->events; 787 events |= (unsigned char)w->events;
600 788
601#if EV_SELECT_IS_WINSOCKET 789#if EV_SELECT_IS_WINSOCKET
602 if (events) 790 if (events)
603 { 791 {
604 unsigned long argp; 792 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE 793 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else 795 #else
608 anfd->handle = _get_osfhandle (fd); 796 anfd->handle = _get_osfhandle (fd);
609 #endif 797 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
611 } 799 }
612#endif 800#endif
613 801
614 { 802 {
615 unsigned char o_events = anfd->events; 803 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify; 804 unsigned char o_reify = anfd->reify;
617 805
618 anfd->reify = 0; 806 anfd->reify = 0;
619 anfd->events = events; 807 anfd->events = events;
620 808
621 if (o_events != events || o_reify & EV_IOFDSET) 809 if (o_events != events || o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 810 backend_modify (EV_A_ fd, o_events, events);
623 } 811 }
624 } 812 }
625 813
626 fdchangecnt = 0; 814 fdchangecnt = 0;
627} 815}
628 816
629void inline_size 817/* something about the given fd changed */
818inline_size void
630fd_change (EV_P_ int fd, int flags) 819fd_change (EV_P_ int fd, int flags)
631{ 820{
632 unsigned char reify = anfds [fd].reify; 821 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 822 anfds [fd].reify |= flags;
634 823
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 828 fdchanges [fdchangecnt - 1] = fd;
640 } 829 }
641} 830}
642 831
643void inline_speed 832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void
644fd_kill (EV_P_ int fd) 834fd_kill (EV_P_ int fd)
645{ 835{
646 ev_io *w; 836 ev_io *w;
647 837
648 while ((w = (ev_io *)anfds [fd].head)) 838 while ((w = (ev_io *)anfds [fd].head))
650 ev_io_stop (EV_A_ w); 840 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 842 }
653} 843}
654 844
655int inline_size 845/* check whether the given fd is atcually valid, for error recovery */
846inline_size int
656fd_valid (int fd) 847fd_valid (int fd)
657{ 848{
658#ifdef _WIN32 849#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 850 return _get_osfhandle (fd) != -1;
660#else 851#else
668{ 859{
669 int fd; 860 int fd;
670 861
671 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 863 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 864 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 865 fd_kill (EV_A_ fd);
675} 866}
676 867
677/* called on ENOMEM in select/poll to kill some fds and retry */ 868/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 869static void noinline
696 887
697 for (fd = 0; fd < anfdmax; ++fd) 888 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 889 if (anfds [fd].events)
699 { 890 {
700 anfds [fd].events = 0; 891 anfds [fd].events = 0;
892 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 893 fd_change (EV_A_ fd, EV__IOFDSET | 1);
702 } 894 }
703} 895}
704 896
705/*****************************************************************************/ 897/*****************************************************************************/
706 898
707void inline_speed 899/*
708upheap (WT *heap, int k) 900 * the heap functions want a real array index. array index 0 uis guaranteed to not
709{ 901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
710 WT w = heap [k]; 902 * the branching factor of the d-tree.
903 */
711 904
712 while (k) 905/*
713 { 906 * at the moment we allow libev the luxury of two heaps,
714 int p = (k - 1) >> 1; 907 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
908 * which is more cache-efficient.
909 * the difference is about 5% with 50000+ watchers.
910 */
911#if EV_USE_4HEAP
715 912
716 if (heap [p]->at <= w->at) 913#define DHEAP 4
914#define HEAP0 (DHEAP - 1) /* index of first element in heap */
915#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
916#define UPHEAP_DONE(p,k) ((p) == (k))
917
918/* away from the root */
919inline_speed void
920downheap (ANHE *heap, int N, int k)
921{
922 ANHE he = heap [k];
923 ANHE *E = heap + N + HEAP0;
924
925 for (;;)
926 {
927 ev_tstamp minat;
928 ANHE *minpos;
929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
930
931 /* find minimum child */
932 if (expect_true (pos + DHEAP - 1 < E))
933 {
934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
936 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
937 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 }
939 else if (pos < E)
940 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
942 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
943 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
944 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
945 }
946 else
717 break; 947 break;
718 948
949 if (ANHE_at (he) <= minat)
950 break;
951
952 heap [k] = *minpos;
953 ev_active (ANHE_w (*minpos)) = k;
954
955 k = minpos - heap;
956 }
957
958 heap [k] = he;
959 ev_active (ANHE_w (he)) = k;
960}
961
962#else /* 4HEAP */
963
964#define HEAP0 1
965#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p))
967
968/* away from the root */
969inline_speed void
970downheap (ANHE *heap, int N, int k)
971{
972 ANHE he = heap [k];
973
974 for (;;)
975 {
976 int c = k << 1;
977
978 if (c > N + HEAP0 - 1)
979 break;
980
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0;
983
984 if (ANHE_at (he) <= ANHE_at (heap [c]))
985 break;
986
987 heap [k] = heap [c];
988 ev_active (ANHE_w (heap [k])) = k;
989
990 k = c;
991 }
992
993 heap [k] = he;
994 ev_active (ANHE_w (he)) = k;
995}
996#endif
997
998/* towards the root */
999inline_speed void
1000upheap (ANHE *heap, int k)
1001{
1002 ANHE he = heap [k];
1003
1004 for (;;)
1005 {
1006 int p = HPARENT (k);
1007
1008 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1009 break;
1010
719 heap [k] = heap [p]; 1011 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 1012 ev_active (ANHE_w (heap [k])) = k;
721 k = p; 1013 k = p;
722 } 1014 }
723 1015
724 heap [k] = w; 1016 heap [k] = he;
725 ((W)heap [k])->active = k + 1; 1017 ev_active (ANHE_w (he)) = k;
726} 1018}
727 1019
728void inline_speed 1020/* move an element suitably so it is in a correct place */
729downheap (WT *heap, int N, int k) 1021inline_size void
730{
731 WT w = heap [k];
732
733 for (;;)
734 {
735 int c = (k << 1) + 1;
736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
752 heap [k] = w;
753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k) 1022adjustheap (ANHE *heap, int N, int k)
758{ 1023{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
759 upheap (heap, k); 1025 upheap (heap, k);
1026 else
760 downheap (heap, N, k); 1027 downheap (heap, N, k);
1028}
1029
1030/* rebuild the heap: this function is used only once and executed rarely */
1031inline_size void
1032reheap (ANHE *heap, int N)
1033{
1034 int i;
1035
1036 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1037 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1038 for (i = 0; i < N; ++i)
1039 upheap (heap, i + HEAP0);
761} 1040}
762 1041
763/*****************************************************************************/ 1042/*****************************************************************************/
764 1043
1044/* associate signal watchers to a signal signal */
765typedef struct 1045typedef struct
766{ 1046{
767 WL head; 1047 WL head;
768 EV_ATOMIC_T gotsig; 1048 EV_ATOMIC_T gotsig;
769} ANSIG; 1049} ANSIG;
771static ANSIG *signals; 1051static ANSIG *signals;
772static int signalmax; 1052static int signalmax;
773 1053
774static EV_ATOMIC_T gotsig; 1054static EV_ATOMIC_T gotsig;
775 1055
776void inline_size
777signals_init (ANSIG *base, int count)
778{
779 while (count--)
780 {
781 base->head = 0;
782 base->gotsig = 0;
783
784 ++base;
785 }
786}
787
788/*****************************************************************************/ 1056/*****************************************************************************/
789 1057
790void inline_speed 1058/* used to prepare libev internal fd's */
1059/* this is not fork-safe */
1060inline_speed void
791fd_intern (int fd) 1061fd_intern (int fd)
792{ 1062{
793#ifdef _WIN32 1063#ifdef _WIN32
794 int arg = 1; 1064 unsigned long arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else 1066#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC); 1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK); 1068 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif 1069#endif
800} 1070}
801 1071
802static void noinline 1072static void noinline
803evpipe_init (EV_P) 1073evpipe_init (EV_P)
804{ 1074{
805 if (!ev_is_active (&pipeev)) 1075 if (!ev_is_active (&pipe_w))
806 { 1076 {
1077#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0)
1079 {
1080 evpipe [0] = -1;
1081 fd_intern (evfd);
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 }
1084 else
1085#endif
1086 {
807 while (pipe (evpipe)) 1087 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe"); 1088 ev_syserr ("(libev) error creating signal/async pipe");
809 1089
810 fd_intern (evpipe [0]); 1090 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]); 1091 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ); 1092 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1093 }
1094
814 ev_io_start (EV_A_ &pipeev); 1095 ev_io_start (EV_A_ &pipe_w);
815 ev_unref (EV_A); /* watcher should not keep loop alive */ 1096 ev_unref (EV_A); /* watcher should not keep loop alive */
816 } 1097 }
817} 1098}
818 1099
819void inline_size 1100inline_size void
820evpipe_write (EV_P_ int sig, int async) 1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{ 1102{
822 if (!(gotasync || gotsig)) 1103 if (!*flag)
823 { 1104 {
824 int old_errno = errno; /* save errno becaue write might clobber it */ 1105 int old_errno = errno; /* save errno because write might clobber it */
825 1106
826 if (sig) gotsig = 1; 1107 *flag = 1;
827 if (async) gotasync = 1;
828 1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
829 write (evpipe [1], &old_errno, 1); 1117 write (evpipe [1], &old_errno, 1);
830 1118
831 errno = old_errno; 1119 errno = old_errno;
832 } 1120 }
833} 1121}
834 1122
1123/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */
835static void 1125static void
836pipecb (EV_P_ ev_io *iow, int revents) 1126pipecb (EV_P_ ev_io *iow, int revents)
837{ 1127{
1128#if EV_USE_EVENTFD
1129 if (evfd >= 0)
838 { 1130 {
839 int dummy; 1131 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t));
1133 }
1134 else
1135#endif
1136 {
1137 char dummy;
840 read (evpipe [0], &dummy, 1); 1138 read (evpipe [0], &dummy, 1);
841 } 1139 }
842 1140
843 if (gotsig) 1141 if (gotsig && ev_is_default_loop (EV_A))
844 { 1142 {
845 int signum; 1143 int signum;
846 gotsig = 0; 1144 gotsig = 0;
847 1145
848 for (signum = signalmax; signum--; ) 1146 for (signum = signalmax; signum--; )
867} 1165}
868 1166
869/*****************************************************************************/ 1167/*****************************************************************************/
870 1168
871static void 1169static void
872sighandler (int signum) 1170ev_sighandler (int signum)
873{ 1171{
874#if EV_MULTIPLICITY 1172#if EV_MULTIPLICITY
875 struct ev_loop *loop = &default_loop_struct; 1173 struct ev_loop *loop = &default_loop_struct;
876#endif 1174#endif
877 1175
878#if _WIN32 1176#if _WIN32
879 signal (signum, sighandler); 1177 signal (signum, ev_sighandler);
880#endif 1178#endif
881 1179
882 signals [signum - 1].gotsig = 1; 1180 signals [signum - 1].gotsig = 1;
883 evpipe_write (EV_A_ 1, 0); 1181 evpipe_write (EV_A_ &gotsig);
884} 1182}
885 1183
886void noinline 1184void noinline
887ev_feed_signal_event (EV_P_ int signum) 1185ev_feed_signal_event (EV_P_ int signum)
888{ 1186{
889 WL w; 1187 WL w;
890 1188
891#if EV_MULTIPLICITY 1189#if EV_MULTIPLICITY
892 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
893#endif 1191#endif
894 1192
895 --signum; 1193 --signum;
896 1194
897 if (signum < 0 || signum >= signalmax) 1195 if (signum < 0 || signum >= signalmax)
913 1211
914#ifndef WIFCONTINUED 1212#ifndef WIFCONTINUED
915# define WIFCONTINUED(status) 0 1213# define WIFCONTINUED(status) 0
916#endif 1214#endif
917 1215
918void inline_speed 1216/* handle a single child status event */
1217inline_speed void
919child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1218child_reap (EV_P_ int chain, int pid, int status)
920{ 1219{
921 ev_child *w; 1220 ev_child *w;
922 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923 1222
924 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
925 { 1224 {
926 if ((w->pid == pid || !w->pid) 1225 if ((w->pid == pid || !w->pid)
927 && (!traced || (w->flags & 1))) 1226 && (!traced || (w->flags & 1)))
928 { 1227 {
929 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
930 w->rpid = pid; 1229 w->rpid = pid;
931 w->rstatus = status; 1230 w->rstatus = status;
932 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1231 ev_feed_event (EV_A_ (W)w, EV_CHILD);
933 } 1232 }
934 } 1233 }
936 1235
937#ifndef WCONTINUED 1236#ifndef WCONTINUED
938# define WCONTINUED 0 1237# define WCONTINUED 0
939#endif 1238#endif
940 1239
1240/* called on sigchld etc., calls waitpid */
941static void 1241static void
942childcb (EV_P_ ev_signal *sw, int revents) 1242childcb (EV_P_ ev_signal *sw, int revents)
943{ 1243{
944 int pid, status; 1244 int pid, status;
945 1245
948 if (!WCONTINUED 1248 if (!WCONTINUED
949 || errno != EINVAL 1249 || errno != EINVAL
950 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1250 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951 return; 1251 return;
952 1252
953 /* make sure we are called again until all childs have been reaped */ 1253 /* make sure we are called again until all children have been reaped */
954 /* we need to do it this way so that the callback gets called before we continue */ 1254 /* we need to do it this way so that the callback gets called before we continue */
955 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
956 1256
957 child_reap (EV_A_ sw, pid, pid, status); 1257 child_reap (EV_A_ pid, pid, status);
958 if (EV_PID_HASHSIZE > 1) 1258 if (EV_PID_HASHSIZE > 1)
959 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
960} 1260}
961 1261
962#endif 1262#endif
963 1263
964/*****************************************************************************/ 1264/*****************************************************************************/
1026 /* kqueue is borked on everything but netbsd apparently */ 1326 /* kqueue is borked on everything but netbsd apparently */
1027 /* it usually doesn't work correctly on anything but sockets and pipes */ 1327 /* it usually doesn't work correctly on anything but sockets and pipes */
1028 flags &= ~EVBACKEND_KQUEUE; 1328 flags &= ~EVBACKEND_KQUEUE;
1029#endif 1329#endif
1030#ifdef __APPLE__ 1330#ifdef __APPLE__
1031 // flags &= ~EVBACKEND_KQUEUE; for documentation 1331 /* only select works correctly on that "unix-certified" platform */
1032 flags &= ~EVBACKEND_POLL; 1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1033#endif 1334#endif
1034 1335
1035 return flags; 1336 return flags;
1036} 1337}
1037 1338
1057ev_loop_count (EV_P) 1358ev_loop_count (EV_P)
1058{ 1359{
1059 return loop_count; 1360 return loop_count;
1060} 1361}
1061 1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{
1366 return loop_depth;
1367}
1368
1062void 1369void
1063ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1064{ 1371{
1065 io_blocktime = interval; 1372 io_blocktime = interval;
1066} 1373}
1069ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1070{ 1377{
1071 timeout_blocktime = interval; 1378 timeout_blocktime = interval;
1072} 1379}
1073 1380
1381/* initialise a loop structure, must be zero-initialised */
1074static void noinline 1382static void noinline
1075loop_init (EV_P_ unsigned int flags) 1383loop_init (EV_P_ unsigned int flags)
1076{ 1384{
1077 if (!backend) 1385 if (!backend)
1078 { 1386 {
1387#if EV_USE_REALTIME
1388 if (!have_realtime)
1389 {
1390 struct timespec ts;
1391
1392 if (!clock_gettime (CLOCK_REALTIME, &ts))
1393 have_realtime = 1;
1394 }
1395#endif
1396
1079#if EV_USE_MONOTONIC 1397#if EV_USE_MONOTONIC
1398 if (!have_monotonic)
1080 { 1399 {
1081 struct timespec ts; 1400 struct timespec ts;
1401
1082 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1083 have_monotonic = 1; 1403 have_monotonic = 1;
1084 } 1404 }
1085#endif 1405#endif
1086 1406
1087 ev_rt_now = ev_time (); 1407 ev_rt_now = ev_time ();
1088 mn_now = get_clock (); 1408 mn_now = get_clock ();
1089 now_floor = mn_now; 1409 now_floor = mn_now;
1107 if (!(flags & EVFLAG_NOENV) 1427 if (!(flags & EVFLAG_NOENV)
1108 && !enable_secure () 1428 && !enable_secure ()
1109 && getenv ("LIBEV_FLAGS")) 1429 && getenv ("LIBEV_FLAGS"))
1110 flags = atoi (getenv ("LIBEV_FLAGS")); 1430 flags = atoi (getenv ("LIBEV_FLAGS"));
1111 1431
1112 if (!(flags & 0x0000ffffUL)) 1432 if (!(flags & 0x0000ffffU))
1113 flags |= ev_recommended_backends (); 1433 flags |= ev_recommended_backends ();
1114 1434
1115#if EV_USE_PORT 1435#if EV_USE_PORT
1116 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1117#endif 1437#endif
1126#endif 1446#endif
1127#if EV_USE_SELECT 1447#if EV_USE_SELECT
1128 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1129#endif 1449#endif
1130 1450
1451 ev_prepare_init (&pending_w, pendingcb);
1452
1131 ev_init (&pipeev, pipecb); 1453 ev_init (&pipe_w, pipecb);
1132 ev_set_priority (&pipeev, EV_MAXPRI); 1454 ev_set_priority (&pipe_w, EV_MAXPRI);
1133 } 1455 }
1134} 1456}
1135 1457
1458/* free up a loop structure */
1136static void noinline 1459static void noinline
1137loop_destroy (EV_P) 1460loop_destroy (EV_P)
1138{ 1461{
1139 int i; 1462 int i;
1140 1463
1141 if (ev_is_active (&pipeev)) 1464 if (ev_is_active (&pipe_w))
1142 { 1465 {
1143 ev_ref (EV_A); /* signal watcher */ 1466 ev_ref (EV_A); /* signal watcher */
1144 ev_io_stop (EV_A_ &pipeev); 1467 ev_io_stop (EV_A_ &pipe_w);
1145 1468
1146 close (evpipe [0]); evpipe [0] = 0; 1469#if EV_USE_EVENTFD
1147 close (evpipe [1]); evpipe [1] = 0; 1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1148 } 1479 }
1149 1480
1150#if EV_USE_INOTIFY 1481#if EV_USE_INOTIFY
1151 if (fs_fd >= 0) 1482 if (fs_fd >= 0)
1152 close (fs_fd); 1483 close (fs_fd);
1180 } 1511 }
1181 1512
1182 ev_free (anfds); anfdmax = 0; 1513 ev_free (anfds); anfdmax = 0;
1183 1514
1184 /* have to use the microsoft-never-gets-it-right macro */ 1515 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY);
1185 array_free (fdchange, EMPTY); 1517 array_free (fdchange, EMPTY);
1186 array_free (timer, EMPTY); 1518 array_free (timer, EMPTY);
1187#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
1188 array_free (periodic, EMPTY); 1520 array_free (periodic, EMPTY);
1189#endif 1521#endif
1197#endif 1529#endif
1198 1530
1199 backend = 0; 1531 backend = 0;
1200} 1532}
1201 1533
1534#if EV_USE_INOTIFY
1202void inline_size infy_fork (EV_P); 1535inline_size void infy_fork (EV_P);
1536#endif
1203 1537
1204void inline_size 1538inline_size void
1205loop_fork (EV_P) 1539loop_fork (EV_P)
1206{ 1540{
1207#if EV_USE_PORT 1541#if EV_USE_PORT
1208 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1209#endif 1543#endif
1215#endif 1549#endif
1216#if EV_USE_INOTIFY 1550#if EV_USE_INOTIFY
1217 infy_fork (EV_A); 1551 infy_fork (EV_A);
1218#endif 1552#endif
1219 1553
1220 if (ev_is_active (&pipeev)) 1554 if (ev_is_active (&pipe_w))
1221 { 1555 {
1222 /* this "locks" the handlers against writing to the pipe */ 1556 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1223 gotsig = gotasync = 1; 1560 gotasync = 1;
1561#endif
1224 1562
1225 ev_ref (EV_A); 1563 ev_ref (EV_A);
1226 ev_io_stop (EV_A_ &pipeev); 1564 ev_io_stop (EV_A_ &pipe_w);
1565
1566#if EV_USE_EVENTFD
1567 if (evfd >= 0)
1568 close (evfd);
1569#endif
1570
1571 if (evpipe [0] >= 0)
1572 {
1227 close (evpipe [0]); 1573 close (evpipe [0]);
1228 close (evpipe [1]); 1574 close (evpipe [1]);
1575 }
1229 1576
1230 evpipe_init (EV_A); 1577 evpipe_init (EV_A);
1231 /* now iterate over everything, in case we missed something */ 1578 /* now iterate over everything, in case we missed something */
1232 pipecb (EV_A_ &pipeev, EV_READ); 1579 pipecb (EV_A_ &pipe_w, EV_READ);
1233 } 1580 }
1234 1581
1235 postfork = 0; 1582 postfork = 0;
1236} 1583}
1237 1584
1238#if EV_MULTIPLICITY 1585#if EV_MULTIPLICITY
1586
1239struct ev_loop * 1587struct ev_loop *
1240ev_loop_new (unsigned int flags) 1588ev_loop_new (unsigned int flags)
1241{ 1589{
1242 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1243 1591
1262ev_loop_fork (EV_P) 1610ev_loop_fork (EV_P)
1263{ 1611{
1264 postfork = 1; /* must be in line with ev_default_fork */ 1612 postfork = 1; /* must be in line with ev_default_fork */
1265} 1613}
1266 1614
1615#if EV_VERIFY
1616static void noinline
1617verify_watcher (EV_P_ W w)
1618{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620
1621 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623}
1624
1625static void noinline
1626verify_heap (EV_P_ ANHE *heap, int N)
1627{
1628 int i;
1629
1630 for (i = HEAP0; i < N + HEAP0; ++i)
1631 {
1632 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1633 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1634 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1635
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 }
1638}
1639
1640static void noinline
1641array_verify (EV_P_ W *ws, int cnt)
1642{
1643 while (cnt--)
1644 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]);
1647 }
1648}
1649#endif
1650
1651void
1652ev_loop_verify (EV_P)
1653{
1654#if EV_VERIFY
1655 int i;
1656 WL w;
1657
1658 assert (activecnt >= -1);
1659
1660 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663
1664 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i)
1666 for (w = anfds [i].head; w; w = w->next)
1667 {
1668 verify_watcher (EV_A_ (W)w);
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 }
1672
1673 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt);
1675
1676#if EV_PERIODIC_ENABLE
1677 assert (periodicmax >= periodiccnt);
1678 verify_heap (EV_A_ periodics, periodiccnt);
1679#endif
1680
1681 for (i = NUMPRI; i--; )
1682 {
1683 assert (pendingmax [i] >= pendingcnt [i]);
1684#if EV_IDLE_ENABLE
1685 assert (idleall >= 0);
1686 assert (idlemax [i] >= idlecnt [i]);
1687 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1688#endif
1689 }
1690
1691#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif
1695
1696#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif
1700
1701 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt);
1703
1704 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt);
1706
1707# if 0
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1267#endif 1710# endif
1711#endif
1712}
1713
1714#endif /* multiplicity */
1268 1715
1269#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
1270struct ev_loop * 1717struct ev_loop *
1271ev_default_loop_init (unsigned int flags) 1718ev_default_loop_init (unsigned int flags)
1272#else 1719#else
1305{ 1752{
1306#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
1307 struct ev_loop *loop = ev_default_loop_ptr; 1754 struct ev_loop *loop = ev_default_loop_ptr;
1308#endif 1755#endif
1309 1756
1757 ev_default_loop_ptr = 0;
1758
1310#ifndef _WIN32 1759#ifndef _WIN32
1311 ev_ref (EV_A); /* child watcher */ 1760 ev_ref (EV_A); /* child watcher */
1312 ev_signal_stop (EV_A_ &childev); 1761 ev_signal_stop (EV_A_ &childev);
1313#endif 1762#endif
1314 1763
1320{ 1769{
1321#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1322 struct ev_loop *loop = ev_default_loop_ptr; 1771 struct ev_loop *loop = ev_default_loop_ptr;
1323#endif 1772#endif
1324 1773
1325 if (backend)
1326 postfork = 1; /* must be in line with ev_loop_fork */ 1774 postfork = 1; /* must be in line with ev_loop_fork */
1327} 1775}
1328 1776
1329/*****************************************************************************/ 1777/*****************************************************************************/
1330 1778
1331void 1779void
1332ev_invoke (EV_P_ void *w, int revents) 1780ev_invoke (EV_P_ void *w, int revents)
1333{ 1781{
1334 EV_CB_INVOKE ((W)w, revents); 1782 EV_CB_INVOKE ((W)w, revents);
1335} 1783}
1336 1784
1337void inline_speed 1785inline_speed void
1338call_pending (EV_P) 1786call_pending (EV_P)
1339{ 1787{
1340 int pri; 1788 int pri;
1341 1789
1342 for (pri = NUMPRI; pri--; ) 1790 for (pri = NUMPRI; pri--; )
1343 while (pendingcnt [pri]) 1791 while (pendingcnt [pri])
1344 { 1792 {
1345 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1346 1794
1347 if (expect_true (p->w))
1348 {
1349 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1350 1797
1351 p->w->pending = 0; 1798 p->w->pending = 0;
1352 EV_CB_INVOKE (p->w, p->events); 1799 EV_CB_INVOKE (p->w, p->events);
1353 } 1800 EV_FREQUENT_CHECK;
1354 } 1801 }
1355} 1802}
1356 1803
1357void inline_size
1358timers_reify (EV_P)
1359{
1360 while (timercnt && ((WT)timers [0])->at <= mn_now)
1361 {
1362 ev_timer *w = (ev_timer *)timers [0];
1363
1364 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1365
1366 /* first reschedule or stop timer */
1367 if (w->repeat)
1368 {
1369 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1370
1371 ((WT)w)->at += w->repeat;
1372 if (((WT)w)->at < mn_now)
1373 ((WT)w)->at = mn_now;
1374
1375 downheap (timers, timercnt, 0);
1376 }
1377 else
1378 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1379
1380 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1381 }
1382}
1383
1384#if EV_PERIODIC_ENABLE
1385void inline_size
1386periodics_reify (EV_P)
1387{
1388 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1389 {
1390 ev_periodic *w = (ev_periodic *)periodics [0];
1391
1392 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1393
1394 /* first reschedule or stop timer */
1395 if (w->reschedule_cb)
1396 {
1397 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1398 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1399 downheap (periodics, periodiccnt, 0);
1400 }
1401 else if (w->interval)
1402 {
1403 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1405 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1406 downheap (periodics, periodiccnt, 0);
1407 }
1408 else
1409 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1410
1411 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1412 }
1413}
1414
1415static void noinline
1416periodics_reschedule (EV_P)
1417{
1418 int i;
1419
1420 /* adjust periodics after time jump */
1421 for (i = 0; i < periodiccnt; ++i)
1422 {
1423 ev_periodic *w = (ev_periodic *)periodics [i];
1424
1425 if (w->reschedule_cb)
1426 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1427 else if (w->interval)
1428 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1429 }
1430
1431 /* now rebuild the heap */
1432 for (i = periodiccnt >> 1; i--; )
1433 downheap (periodics, periodiccnt, i);
1434}
1435#endif
1436
1437#if EV_IDLE_ENABLE 1804#if EV_IDLE_ENABLE
1438void inline_size 1805/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */
1807inline_size void
1439idle_reify (EV_P) 1808idle_reify (EV_P)
1440{ 1809{
1441 if (expect_false (idleall)) 1810 if (expect_false (idleall))
1442 { 1811 {
1443 int pri; 1812 int pri;
1455 } 1824 }
1456 } 1825 }
1457} 1826}
1458#endif 1827#endif
1459 1828
1460void inline_speed 1829/* make timers pending */
1830inline_size void
1831timers_reify (EV_P)
1832{
1833 EV_FREQUENT_CHECK;
1834
1835 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1836 {
1837 do
1838 {
1839 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1840
1841 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1842
1843 /* first reschedule or stop timer */
1844 if (w->repeat)
1845 {
1846 ev_at (w) += w->repeat;
1847 if (ev_at (w) < mn_now)
1848 ev_at (w) = mn_now;
1849
1850 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1851
1852 ANHE_at_cache (timers [HEAP0]);
1853 downheap (timers, timercnt, HEAP0);
1854 }
1855 else
1856 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1857
1858 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w);
1860 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862
1863 feed_reverse_done (EV_A_ EV_TIMEOUT);
1864 }
1865}
1866
1867#if EV_PERIODIC_ENABLE
1868/* make periodics pending */
1869inline_size void
1870periodics_reify (EV_P)
1871{
1872 EV_FREQUENT_CHECK;
1873
1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1875 {
1876 int feed_count = 0;
1877
1878 do
1879 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1883
1884 /* first reschedule or stop timer */
1885 if (w->reschedule_cb)
1886 {
1887 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1888
1889 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1890
1891 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0);
1893 }
1894 else if (w->interval)
1895 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0);
1912 }
1913 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1915
1916 EV_FREQUENT_CHECK;
1917 feed_reverse (EV_A_ (W)w);
1918 }
1919 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1920
1921 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 }
1923}
1924
1925/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1927static void noinline
1928periodics_reschedule (EV_P)
1929{
1930 int i;
1931
1932 /* adjust periodics after time jump */
1933 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1934 {
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936
1937 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1941
1942 ANHE_at_cache (periodics [i]);
1943 }
1944
1945 reheap (periodics, periodiccnt);
1946}
1947#endif
1948
1949/* adjust all timers by a given offset */
1950static void noinline
1951timers_reschedule (EV_P_ ev_tstamp adjust)
1952{
1953 int i;
1954
1955 for (i = 0; i < timercnt; ++i)
1956 {
1957 ANHE *he = timers + i + HEAP0;
1958 ANHE_w (*he)->at += adjust;
1959 ANHE_at_cache (*he);
1960 }
1961}
1962
1963/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */
1965inline_speed void
1461time_update (EV_P_ ev_tstamp max_block) 1966time_update (EV_P_ ev_tstamp max_block)
1462{ 1967{
1463 int i;
1464
1465#if EV_USE_MONOTONIC 1968#if EV_USE_MONOTONIC
1466 if (expect_true (have_monotonic)) 1969 if (expect_true (have_monotonic))
1467 { 1970 {
1971 int i;
1468 ev_tstamp odiff = rtmn_diff; 1972 ev_tstamp odiff = rtmn_diff;
1469 1973
1470 mn_now = get_clock (); 1974 mn_now = get_clock ();
1471 1975
1472 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1976 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1490 */ 1994 */
1491 for (i = 4; --i; ) 1995 for (i = 4; --i; )
1492 { 1996 {
1493 rtmn_diff = ev_rt_now - mn_now; 1997 rtmn_diff = ev_rt_now - mn_now;
1494 1998
1495 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1496 return; /* all is well */ 2000 return; /* all is well */
1497 2001
1498 ev_rt_now = ev_time (); 2002 ev_rt_now = ev_time ();
1499 mn_now = get_clock (); 2003 mn_now = get_clock ();
1500 now_floor = mn_now; 2004 now_floor = mn_now;
1501 } 2005 }
1502 2006
2007 /* no timer adjustment, as the monotonic clock doesn't jump */
2008 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1503# if EV_PERIODIC_ENABLE 2009# if EV_PERIODIC_ENABLE
1504 periodics_reschedule (EV_A); 2010 periodics_reschedule (EV_A);
1505# endif 2011# endif
1506 /* no timer adjustment, as the monotonic clock doesn't jump */
1507 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1508 } 2012 }
1509 else 2013 else
1510#endif 2014#endif
1511 { 2015 {
1512 ev_rt_now = ev_time (); 2016 ev_rt_now = ev_time ();
1513 2017
1514 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2018 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1515 { 2019 {
2020 /* adjust timers. this is easy, as the offset is the same for all of them */
2021 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1516#if EV_PERIODIC_ENABLE 2022#if EV_PERIODIC_ENABLE
1517 periodics_reschedule (EV_A); 2023 periodics_reschedule (EV_A);
1518#endif 2024#endif
1519 /* adjust timers. this is easy, as the offset is the same for all of them */
1520 for (i = 0; i < timercnt; ++i)
1521 ((WT)timers [i])->at += ev_rt_now - mn_now;
1522 } 2025 }
1523 2026
1524 mn_now = ev_rt_now; 2027 mn_now = ev_rt_now;
1525 } 2028 }
1526} 2029}
1527 2030
1528void 2031void
1529ev_ref (EV_P)
1530{
1531 ++activecnt;
1532}
1533
1534void
1535ev_unref (EV_P)
1536{
1537 --activecnt;
1538}
1539
1540static int loop_done;
1541
1542void
1543ev_loop (EV_P_ int flags) 2032ev_loop (EV_P_ int flags)
1544{ 2033{
1545 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2034 ++loop_depth;
1546 ? EVUNLOOP_ONE 2035
1547 : EVUNLOOP_CANCEL; 2036 loop_done = EVUNLOOP_CANCEL;
1548 2037
1549 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1550 2039
1551 do 2040 do
1552 { 2041 {
2042#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A);
2044#endif
2045
1553#ifndef _WIN32 2046#ifndef _WIN32
1554 if (expect_false (curpid)) /* penalise the forking check even more */ 2047 if (expect_false (curpid)) /* penalise the forking check even more */
1555 if (expect_false (getpid () != curpid)) 2048 if (expect_false (getpid () != curpid))
1556 { 2049 {
1557 curpid = getpid (); 2050 curpid = getpid ();
1574 { 2067 {
1575 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1576 call_pending (EV_A); 2069 call_pending (EV_A);
1577 } 2070 }
1578 2071
1579 if (expect_false (!activecnt))
1580 break;
1581
1582 /* we might have forked, so reify kernel state if necessary */ 2072 /* we might have forked, so reify kernel state if necessary */
1583 if (expect_false (postfork)) 2073 if (expect_false (postfork))
1584 loop_fork (EV_A); 2074 loop_fork (EV_A);
1585 2075
1586 /* update fd-related kernel structures */ 2076 /* update fd-related kernel structures */
1591 ev_tstamp waittime = 0.; 2081 ev_tstamp waittime = 0.;
1592 ev_tstamp sleeptime = 0.; 2082 ev_tstamp sleeptime = 0.;
1593 2083
1594 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1595 { 2085 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
1596 /* update time to cancel out callback processing overhead */ 2089 /* update time to cancel out callback processing overhead */
1597 time_update (EV_A_ 1e100); 2090 time_update (EV_A_ 1e100);
1598 2091
1599 waittime = MAX_BLOCKTIME; 2092 waittime = MAX_BLOCKTIME;
1600 2093
1601 if (timercnt) 2094 if (timercnt)
1602 { 2095 {
1603 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1604 if (waittime > to) waittime = to; 2097 if (waittime > to) waittime = to;
1605 } 2098 }
1606 2099
1607#if EV_PERIODIC_ENABLE 2100#if EV_PERIODIC_ENABLE
1608 if (periodiccnt) 2101 if (periodiccnt)
1609 { 2102 {
1610 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1611 if (waittime > to) waittime = to; 2104 if (waittime > to) waittime = to;
1612 } 2105 }
1613#endif 2106#endif
1614 2107
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */
1615 if (expect_false (waittime < timeout_blocktime)) 2109 if (expect_false (waittime < timeout_blocktime))
1616 waittime = timeout_blocktime; 2110 waittime = timeout_blocktime;
1617 2111
1618 sleeptime = waittime - backend_fudge; 2112 /* extra check because io_blocktime is commonly 0 */
1619
1620 if (expect_true (sleeptime > io_blocktime)) 2113 if (expect_false (io_blocktime))
1621 sleeptime = io_blocktime;
1622
1623 if (sleeptime)
1624 { 2114 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116
2117 if (sleeptime > waittime - backend_fudge)
2118 sleeptime = waittime - backend_fudge;
2119
2120 if (expect_true (sleeptime > 0.))
2121 {
1625 ev_sleep (sleeptime); 2122 ev_sleep (sleeptime);
1626 waittime -= sleeptime; 2123 waittime -= sleeptime;
2124 }
1627 } 2125 }
1628 } 2126 }
1629 2127
1630 ++loop_count; 2128 ++loop_count;
1631 backend_poll (EV_A_ waittime); 2129 backend_poll (EV_A_ waittime);
1648 /* queue check watchers, to be executed first */ 2146 /* queue check watchers, to be executed first */
1649 if (expect_false (checkcnt)) 2147 if (expect_false (checkcnt))
1650 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1651 2149
1652 call_pending (EV_A); 2150 call_pending (EV_A);
1653
1654 } 2151 }
1655 while (expect_true (activecnt && !loop_done)); 2152 while (expect_true (
2153 activecnt
2154 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2156 ));
1656 2157
1657 if (loop_done == EVUNLOOP_ONE) 2158 if (loop_done == EVUNLOOP_ONE)
1658 loop_done = EVUNLOOP_CANCEL; 2159 loop_done = EVUNLOOP_CANCEL;
2160
2161 --loop_depth;
1659} 2162}
1660 2163
1661void 2164void
1662ev_unloop (EV_P_ int how) 2165ev_unloop (EV_P_ int how)
1663{ 2166{
1664 loop_done = how; 2167 loop_done = how;
1665} 2168}
1666 2169
2170void
2171ev_ref (EV_P)
2172{
2173 ++activecnt;
2174}
2175
2176void
2177ev_unref (EV_P)
2178{
2179 --activecnt;
2180}
2181
2182void
2183ev_now_update (EV_P)
2184{
2185 time_update (EV_A_ 1e100);
2186}
2187
2188void
2189ev_suspend (EV_P)
2190{
2191 ev_now_update (EV_A);
2192}
2193
2194void
2195ev_resume (EV_P)
2196{
2197 ev_tstamp mn_prev = mn_now;
2198
2199 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev);
2201#if EV_PERIODIC_ENABLE
2202 /* TODO: really do this? */
2203 periodics_reschedule (EV_A);
2204#endif
2205}
2206
1667/*****************************************************************************/ 2207/*****************************************************************************/
2208/* singly-linked list management, used when the expected list length is short */
1668 2209
1669void inline_size 2210inline_size void
1670wlist_add (WL *head, WL elem) 2211wlist_add (WL *head, WL elem)
1671{ 2212{
1672 elem->next = *head; 2213 elem->next = *head;
1673 *head = elem; 2214 *head = elem;
1674} 2215}
1675 2216
1676void inline_size 2217inline_size void
1677wlist_del (WL *head, WL elem) 2218wlist_del (WL *head, WL elem)
1678{ 2219{
1679 while (*head) 2220 while (*head)
1680 { 2221 {
1681 if (*head == elem) 2222 if (*head == elem)
1686 2227
1687 head = &(*head)->next; 2228 head = &(*head)->next;
1688 } 2229 }
1689} 2230}
1690 2231
1691void inline_speed 2232/* internal, faster, version of ev_clear_pending */
2233inline_speed void
1692clear_pending (EV_P_ W w) 2234clear_pending (EV_P_ W w)
1693{ 2235{
1694 if (w->pending) 2236 if (w->pending)
1695 { 2237 {
1696 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2238 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1697 w->pending = 0; 2239 w->pending = 0;
1698 } 2240 }
1699} 2241}
1700 2242
1701int 2243int
1705 int pending = w_->pending; 2247 int pending = w_->pending;
1706 2248
1707 if (expect_true (pending)) 2249 if (expect_true (pending))
1708 { 2250 {
1709 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2251 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2252 p->w = (W)&pending_w;
1710 w_->pending = 0; 2253 w_->pending = 0;
1711 p->w = 0;
1712 return p->events; 2254 return p->events;
1713 } 2255 }
1714 else 2256 else
1715 return 0; 2257 return 0;
1716} 2258}
1717 2259
1718void inline_size 2260inline_size void
1719pri_adjust (EV_P_ W w) 2261pri_adjust (EV_P_ W w)
1720{ 2262{
1721 int pri = w->priority; 2263 int pri = w->priority;
1722 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1723 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1724 w->priority = pri; 2266 w->priority = pri;
1725} 2267}
1726 2268
1727void inline_speed 2269inline_speed void
1728ev_start (EV_P_ W w, int active) 2270ev_start (EV_P_ W w, int active)
1729{ 2271{
1730 pri_adjust (EV_A_ w); 2272 pri_adjust (EV_A_ w);
1731 w->active = active; 2273 w->active = active;
1732 ev_ref (EV_A); 2274 ev_ref (EV_A);
1733} 2275}
1734 2276
1735void inline_size 2277inline_size void
1736ev_stop (EV_P_ W w) 2278ev_stop (EV_P_ W w)
1737{ 2279{
1738 ev_unref (EV_A); 2280 ev_unref (EV_A);
1739 w->active = 0; 2281 w->active = 0;
1740} 2282}
1747 int fd = w->fd; 2289 int fd = w->fd;
1748 2290
1749 if (expect_false (ev_is_active (w))) 2291 if (expect_false (ev_is_active (w)))
1750 return; 2292 return;
1751 2293
1752 assert (("ev_io_start called with negative fd", fd >= 0)); 2294 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296
2297 EV_FREQUENT_CHECK;
1753 2298
1754 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
1755 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1756 wlist_add (&anfds[fd].head, (WL)w); 2301 wlist_add (&anfds[fd].head, (WL)w);
1757 2302
1758 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1759 w->events &= ~EV_IOFDSET; 2304 w->events &= ~EV__IOFDSET;
2305
2306 EV_FREQUENT_CHECK;
1760} 2307}
1761 2308
1762void noinline 2309void noinline
1763ev_io_stop (EV_P_ ev_io *w) 2310ev_io_stop (EV_P_ ev_io *w)
1764{ 2311{
1765 clear_pending (EV_A_ (W)w); 2312 clear_pending (EV_A_ (W)w);
1766 if (expect_false (!ev_is_active (w))) 2313 if (expect_false (!ev_is_active (w)))
1767 return; 2314 return;
1768 2315
1769 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2316 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2317
2318 EV_FREQUENT_CHECK;
1770 2319
1771 wlist_del (&anfds[w->fd].head, (WL)w); 2320 wlist_del (&anfds[w->fd].head, (WL)w);
1772 ev_stop (EV_A_ (W)w); 2321 ev_stop (EV_A_ (W)w);
1773 2322
1774 fd_change (EV_A_ w->fd, 1); 2323 fd_change (EV_A_ w->fd, 1);
2324
2325 EV_FREQUENT_CHECK;
1775} 2326}
1776 2327
1777void noinline 2328void noinline
1778ev_timer_start (EV_P_ ev_timer *w) 2329ev_timer_start (EV_P_ ev_timer *w)
1779{ 2330{
1780 if (expect_false (ev_is_active (w))) 2331 if (expect_false (ev_is_active (w)))
1781 return; 2332 return;
1782 2333
1783 ((WT)w)->at += mn_now; 2334 ev_at (w) += mn_now;
1784 2335
1785 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2336 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1786 2337
2338 EV_FREQUENT_CHECK;
2339
2340 ++timercnt;
1787 ev_start (EV_A_ (W)w, ++timercnt); 2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1788 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2342 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1789 timers [timercnt - 1] = (WT)w; 2343 ANHE_w (timers [ev_active (w)]) = (WT)w;
1790 upheap (timers, timercnt - 1); 2344 ANHE_at_cache (timers [ev_active (w)]);
2345 upheap (timers, ev_active (w));
1791 2346
2347 EV_FREQUENT_CHECK;
2348
1792 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1793} 2350}
1794 2351
1795void noinline 2352void noinline
1796ev_timer_stop (EV_P_ ev_timer *w) 2353ev_timer_stop (EV_P_ ev_timer *w)
1797{ 2354{
1798 clear_pending (EV_A_ (W)w); 2355 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w))) 2356 if (expect_false (!ev_is_active (w)))
1800 return; 2357 return;
1801 2358
1802 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2359 EV_FREQUENT_CHECK;
1803 2360
1804 { 2361 {
1805 int active = ((W)w)->active; 2362 int active = ev_active (w);
1806 2363
2364 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2365
2366 --timercnt;
2367
1807 if (expect_true (--active < --timercnt)) 2368 if (expect_true (active < timercnt + HEAP0))
1808 { 2369 {
1809 timers [active] = timers [timercnt]; 2370 timers [active] = timers [timercnt + HEAP0];
1810 adjustheap (timers, timercnt, active); 2371 adjustheap (timers, timercnt, active);
1811 } 2372 }
1812 } 2373 }
1813 2374
1814 ((WT)w)->at -= mn_now; 2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now;
1815 2378
1816 ev_stop (EV_A_ (W)w); 2379 ev_stop (EV_A_ (W)w);
1817} 2380}
1818 2381
1819void noinline 2382void noinline
1820ev_timer_again (EV_P_ ev_timer *w) 2383ev_timer_again (EV_P_ ev_timer *w)
1821{ 2384{
2385 EV_FREQUENT_CHECK;
2386
1822 if (ev_is_active (w)) 2387 if (ev_is_active (w))
1823 { 2388 {
1824 if (w->repeat) 2389 if (w->repeat)
1825 { 2390 {
1826 ((WT)w)->at = mn_now + w->repeat; 2391 ev_at (w) = mn_now + w->repeat;
2392 ANHE_at_cache (timers [ev_active (w)]);
1827 adjustheap (timers, timercnt, ((W)w)->active - 1); 2393 adjustheap (timers, timercnt, ev_active (w));
1828 } 2394 }
1829 else 2395 else
1830 ev_timer_stop (EV_A_ w); 2396 ev_timer_stop (EV_A_ w);
1831 } 2397 }
1832 else if (w->repeat) 2398 else if (w->repeat)
1833 { 2399 {
1834 w->at = w->repeat; 2400 ev_at (w) = w->repeat;
1835 ev_timer_start (EV_A_ w); 2401 ev_timer_start (EV_A_ w);
1836 } 2402 }
2403
2404 EV_FREQUENT_CHECK;
1837} 2405}
1838 2406
1839#if EV_PERIODIC_ENABLE 2407#if EV_PERIODIC_ENABLE
1840void noinline 2408void noinline
1841ev_periodic_start (EV_P_ ev_periodic *w) 2409ev_periodic_start (EV_P_ ev_periodic *w)
1842{ 2410{
1843 if (expect_false (ev_is_active (w))) 2411 if (expect_false (ev_is_active (w)))
1844 return; 2412 return;
1845 2413
1846 if (w->reschedule_cb) 2414 if (w->reschedule_cb)
1847 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1848 else if (w->interval) 2416 else if (w->interval)
1849 { 2417 {
1850 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1851 /* this formula differs from the one in periodic_reify because we do not always round up */ 2419 /* this formula differs from the one in periodic_reify because we do not always round up */
1852 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1853 } 2421 }
1854 else 2422 else
1855 ((WT)w)->at = w->offset; 2423 ev_at (w) = w->offset;
1856 2424
2425 EV_FREQUENT_CHECK;
2426
2427 ++periodiccnt;
1857 ev_start (EV_A_ (W)w, ++periodiccnt); 2428 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1858 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2429 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1859 periodics [periodiccnt - 1] = (WT)w; 2430 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1860 upheap (periodics, periodiccnt - 1); 2431 ANHE_at_cache (periodics [ev_active (w)]);
2432 upheap (periodics, ev_active (w));
1861 2433
2434 EV_FREQUENT_CHECK;
2435
1862 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1863} 2437}
1864 2438
1865void noinline 2439void noinline
1866ev_periodic_stop (EV_P_ ev_periodic *w) 2440ev_periodic_stop (EV_P_ ev_periodic *w)
1867{ 2441{
1868 clear_pending (EV_A_ (W)w); 2442 clear_pending (EV_A_ (W)w);
1869 if (expect_false (!ev_is_active (w))) 2443 if (expect_false (!ev_is_active (w)))
1870 return; 2444 return;
1871 2445
1872 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2446 EV_FREQUENT_CHECK;
1873 2447
1874 { 2448 {
1875 int active = ((W)w)->active; 2449 int active = ev_active (w);
1876 2450
2451 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2452
2453 --periodiccnt;
2454
1877 if (expect_true (--active < --periodiccnt)) 2455 if (expect_true (active < periodiccnt + HEAP0))
1878 { 2456 {
1879 periodics [active] = periodics [periodiccnt]; 2457 periodics [active] = periodics [periodiccnt + HEAP0];
1880 adjustheap (periodics, periodiccnt, active); 2458 adjustheap (periodics, periodiccnt, active);
1881 } 2459 }
1882 } 2460 }
1883 2461
2462 EV_FREQUENT_CHECK;
2463
1884 ev_stop (EV_A_ (W)w); 2464 ev_stop (EV_A_ (W)w);
1885} 2465}
1886 2466
1887void noinline 2467void noinline
1888ev_periodic_again (EV_P_ ev_periodic *w) 2468ev_periodic_again (EV_P_ ev_periodic *w)
1899 2479
1900void noinline 2480void noinline
1901ev_signal_start (EV_P_ ev_signal *w) 2481ev_signal_start (EV_P_ ev_signal *w)
1902{ 2482{
1903#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1904 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1905#endif 2485#endif
1906 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
1907 return; 2487 return;
1908 2488
1909 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
1910 2490
1911 evpipe_init (EV_A); 2491 evpipe_init (EV_A);
2492
2493 EV_FREQUENT_CHECK;
1912 2494
1913 { 2495 {
1914#ifndef _WIN32 2496#ifndef _WIN32
1915 sigset_t full, prev; 2497 sigset_t full, prev;
1916 sigfillset (&full); 2498 sigfillset (&full);
1917 sigprocmask (SIG_SETMASK, &full, &prev); 2499 sigprocmask (SIG_SETMASK, &full, &prev);
1918#endif 2500#endif
1919 2501
1920 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1921 2503
1922#ifndef _WIN32 2504#ifndef _WIN32
1923 sigprocmask (SIG_SETMASK, &prev, 0); 2505 sigprocmask (SIG_SETMASK, &prev, 0);
1924#endif 2506#endif
1925 } 2507 }
1928 wlist_add (&signals [w->signum - 1].head, (WL)w); 2510 wlist_add (&signals [w->signum - 1].head, (WL)w);
1929 2511
1930 if (!((WL)w)->next) 2512 if (!((WL)w)->next)
1931 { 2513 {
1932#if _WIN32 2514#if _WIN32
1933 signal (w->signum, sighandler); 2515 signal (w->signum, ev_sighandler);
1934#else 2516#else
1935 struct sigaction sa; 2517 struct sigaction sa;
1936 sa.sa_handler = sighandler; 2518 sa.sa_handler = ev_sighandler;
1937 sigfillset (&sa.sa_mask); 2519 sigfillset (&sa.sa_mask);
1938 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1939 sigaction (w->signum, &sa, 0); 2521 sigaction (w->signum, &sa, 0);
1940#endif 2522#endif
1941 } 2523 }
2524
2525 EV_FREQUENT_CHECK;
1942} 2526}
1943 2527
1944void noinline 2528void noinline
1945ev_signal_stop (EV_P_ ev_signal *w) 2529ev_signal_stop (EV_P_ ev_signal *w)
1946{ 2530{
1947 clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
1948 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
1949 return; 2533 return;
1950 2534
2535 EV_FREQUENT_CHECK;
2536
1951 wlist_del (&signals [w->signum - 1].head, (WL)w); 2537 wlist_del (&signals [w->signum - 1].head, (WL)w);
1952 ev_stop (EV_A_ (W)w); 2538 ev_stop (EV_A_ (W)w);
1953 2539
1954 if (!signals [w->signum - 1].head) 2540 if (!signals [w->signum - 1].head)
1955 signal (w->signum, SIG_DFL); 2541 signal (w->signum, SIG_DFL);
2542
2543 EV_FREQUENT_CHECK;
1956} 2544}
1957 2545
1958void 2546void
1959ev_child_start (EV_P_ ev_child *w) 2547ev_child_start (EV_P_ ev_child *w)
1960{ 2548{
1961#if EV_MULTIPLICITY 2549#if EV_MULTIPLICITY
1962 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1963#endif 2551#endif
1964 if (expect_false (ev_is_active (w))) 2552 if (expect_false (ev_is_active (w)))
1965 return; 2553 return;
1966 2554
2555 EV_FREQUENT_CHECK;
2556
1967 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
1968 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2559
2560 EV_FREQUENT_CHECK;
1969} 2561}
1970 2562
1971void 2563void
1972ev_child_stop (EV_P_ ev_child *w) 2564ev_child_stop (EV_P_ ev_child *w)
1973{ 2565{
1974 clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
1975 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
1976 return; 2568 return;
1977 2569
2570 EV_FREQUENT_CHECK;
2571
1978 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1979 ev_stop (EV_A_ (W)w); 2573 ev_stop (EV_A_ (W)w);
2574
2575 EV_FREQUENT_CHECK;
1980} 2576}
1981 2577
1982#if EV_STAT_ENABLE 2578#if EV_STAT_ENABLE
1983 2579
1984# ifdef _WIN32 2580# ifdef _WIN32
1985# undef lstat 2581# undef lstat
1986# define lstat(a,b) _stati64 (a,b) 2582# define lstat(a,b) _stati64 (a,b)
1987# endif 2583# endif
1988 2584
1989#define DEF_STAT_INTERVAL 5.0074891 2585#define DEF_STAT_INTERVAL 5.0074891
2586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1990#define MIN_STAT_INTERVAL 0.1074891 2587#define MIN_STAT_INTERVAL 0.1074891
1991 2588
1992static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1993 2590
1994#if EV_USE_INOTIFY 2591#if EV_USE_INOTIFY
1995# define EV_INOTIFY_BUFSIZE 8192 2592# define EV_INOTIFY_BUFSIZE 8192
1999{ 2596{
2000 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); 2597 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);
2001 2598
2002 if (w->wd < 0) 2599 if (w->wd < 0)
2003 { 2600 {
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2004 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2005 2603
2006 /* monitor some parent directory for speedup hints */ 2604 /* monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */
2007 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2008 { 2608 {
2009 char path [4096]; 2609 char path [4096];
2010 strcpy (path, w->path); 2610 strcpy (path, w->path);
2011 2611
2014 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2614 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2015 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2615 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2016 2616
2017 char *pend = strrchr (path, '/'); 2617 char *pend = strrchr (path, '/');
2018 2618
2019 if (!pend) 2619 if (!pend || pend == path)
2020 break; /* whoops, no '/', complain to your admin */ 2620 break;
2021 2621
2022 *pend = 0; 2622 *pend = 0;
2023 w->wd = inotify_add_watch (fs_fd, path, mask); 2623 w->wd = inotify_add_watch (fs_fd, path, mask);
2024 } 2624 }
2025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2026 } 2626 }
2027 } 2627 }
2028 else
2029 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2030 2628
2031 if (w->wd >= 0) 2629 if (w->wd >= 0)
2630 {
2032 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2632
2633 /* now local changes will be tracked by inotify, but remote changes won't */
2634 /* unless the filesystem it known to be local, we therefore still poll */
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer);
2649 }
2033} 2650}
2034 2651
2035static void noinline 2652static void noinline
2036infy_del (EV_P_ ev_stat *w) 2653infy_del (EV_P_ ev_stat *w)
2037{ 2654{
2051 2668
2052static void noinline 2669static void noinline
2053infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2054{ 2671{
2055 if (slot < 0) 2672 if (slot < 0)
2056 /* overflow, need to check for all hahs slots */ 2673 /* overflow, need to check for all hash slots */
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2058 infy_wd (EV_A_ slot, wd, ev); 2675 infy_wd (EV_A_ slot, wd, ev);
2059 else 2676 else
2060 { 2677 {
2061 WL w_; 2678 WL w_;
2067 2684
2068 if (w->wd == wd || wd == -1) 2685 if (w->wd == wd || wd == -1)
2069 { 2686 {
2070 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2071 { 2688 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2072 w->wd = -1; 2690 w->wd = -1;
2073 infy_add (EV_A_ w); /* re-add, no matter what */ 2691 infy_add (EV_A_ w); /* re-add, no matter what */
2074 } 2692 }
2075 2693
2076 stat_timer_cb (EV_A_ &w->timer, 0); 2694 stat_timer_cb (EV_A_ &w->timer, 0);
2089 2707
2090 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2091 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2709 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2092} 2710}
2093 2711
2094void inline_size 2712inline_size void
2713check_2625 (EV_P)
2714{
2715 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */
2718 struct utsname buf;
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return;
2723
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1;
2733}
2734
2735inline_size void
2095infy_init (EV_P) 2736infy_init (EV_P)
2096{ 2737{
2097 if (fs_fd != -2) 2738 if (fs_fd != -2)
2098 return; 2739 return;
2740
2741 fs_fd = -1;
2742
2743 check_2625 (EV_A);
2099 2744
2100 fs_fd = inotify_init (); 2745 fs_fd = inotify_init ();
2101 2746
2102 if (fs_fd >= 0) 2747 if (fs_fd >= 0)
2103 { 2748 {
2105 ev_set_priority (&fs_w, EV_MAXPRI); 2750 ev_set_priority (&fs_w, EV_MAXPRI);
2106 ev_io_start (EV_A_ &fs_w); 2751 ev_io_start (EV_A_ &fs_w);
2107 } 2752 }
2108} 2753}
2109 2754
2110void inline_size 2755inline_size void
2111infy_fork (EV_P) 2756infy_fork (EV_P)
2112{ 2757{
2113 int slot; 2758 int slot;
2114 2759
2115 if (fs_fd < 0) 2760 if (fs_fd < 0)
2131 w->wd = -1; 2776 w->wd = -1;
2132 2777
2133 if (fs_fd >= 0) 2778 if (fs_fd >= 0)
2134 infy_add (EV_A_ w); /* re-add, no matter what */ 2779 infy_add (EV_A_ w); /* re-add, no matter what */
2135 else 2780 else
2136 ev_timer_start (EV_A_ &w->timer); 2781 ev_timer_again (EV_A_ &w->timer);
2137 } 2782 }
2138
2139 } 2783 }
2140} 2784}
2141 2785
2786#endif
2787
2788#ifdef _WIN32
2789# define EV_LSTAT(p,b) _stati64 (p, b)
2790#else
2791# define EV_LSTAT(p,b) lstat (p, b)
2142#endif 2792#endif
2143 2793
2144void 2794void
2145ev_stat_stat (EV_P_ ev_stat *w) 2795ev_stat_stat (EV_P_ ev_stat *w)
2146{ 2796{
2173 || w->prev.st_atime != w->attr.st_atime 2823 || w->prev.st_atime != w->attr.st_atime
2174 || w->prev.st_mtime != w->attr.st_mtime 2824 || w->prev.st_mtime != w->attr.st_mtime
2175 || w->prev.st_ctime != w->attr.st_ctime 2825 || w->prev.st_ctime != w->attr.st_ctime
2176 ) { 2826 ) {
2177 #if EV_USE_INOTIFY 2827 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0)
2829 {
2178 infy_del (EV_A_ w); 2830 infy_del (EV_A_ w);
2179 infy_add (EV_A_ w); 2831 infy_add (EV_A_ w);
2180 ev_stat_stat (EV_A_ w); /* avoid race... */ 2832 ev_stat_stat (EV_A_ w); /* avoid race... */
2833 }
2181 #endif 2834 #endif
2182 2835
2183 ev_feed_event (EV_A_ w, EV_STAT); 2836 ev_feed_event (EV_A_ w, EV_STAT);
2184 } 2837 }
2185} 2838}
2188ev_stat_start (EV_P_ ev_stat *w) 2841ev_stat_start (EV_P_ ev_stat *w)
2189{ 2842{
2190 if (expect_false (ev_is_active (w))) 2843 if (expect_false (ev_is_active (w)))
2191 return; 2844 return;
2192 2845
2193 /* since we use memcmp, we need to clear any padding data etc. */
2194 memset (&w->prev, 0, sizeof (ev_statdata));
2195 memset (&w->attr, 0, sizeof (ev_statdata));
2196
2197 ev_stat_stat (EV_A_ w); 2846 ev_stat_stat (EV_A_ w);
2198 2847
2848 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2199 if (w->interval < MIN_STAT_INTERVAL) 2849 w->interval = MIN_STAT_INTERVAL;
2200 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2201 2850
2202 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2851 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2203 ev_set_priority (&w->timer, ev_priority (w)); 2852 ev_set_priority (&w->timer, ev_priority (w));
2204 2853
2205#if EV_USE_INOTIFY 2854#if EV_USE_INOTIFY
2206 infy_init (EV_A); 2855 infy_init (EV_A);
2207 2856
2208 if (fs_fd >= 0) 2857 if (fs_fd >= 0)
2209 infy_add (EV_A_ w); 2858 infy_add (EV_A_ w);
2210 else 2859 else
2211#endif 2860#endif
2212 ev_timer_start (EV_A_ &w->timer); 2861 ev_timer_again (EV_A_ &w->timer);
2213 2862
2214 ev_start (EV_A_ (W)w, 1); 2863 ev_start (EV_A_ (W)w, 1);
2864
2865 EV_FREQUENT_CHECK;
2215} 2866}
2216 2867
2217void 2868void
2218ev_stat_stop (EV_P_ ev_stat *w) 2869ev_stat_stop (EV_P_ ev_stat *w)
2219{ 2870{
2220 clear_pending (EV_A_ (W)w); 2871 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w))) 2872 if (expect_false (!ev_is_active (w)))
2222 return; 2873 return;
2223 2874
2875 EV_FREQUENT_CHECK;
2876
2224#if EV_USE_INOTIFY 2877#if EV_USE_INOTIFY
2225 infy_del (EV_A_ w); 2878 infy_del (EV_A_ w);
2226#endif 2879#endif
2227 ev_timer_stop (EV_A_ &w->timer); 2880 ev_timer_stop (EV_A_ &w->timer);
2228 2881
2229 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
2883
2884 EV_FREQUENT_CHECK;
2230} 2885}
2231#endif 2886#endif
2232 2887
2233#if EV_IDLE_ENABLE 2888#if EV_IDLE_ENABLE
2234void 2889void
2236{ 2891{
2237 if (expect_false (ev_is_active (w))) 2892 if (expect_false (ev_is_active (w)))
2238 return; 2893 return;
2239 2894
2240 pri_adjust (EV_A_ (W)w); 2895 pri_adjust (EV_A_ (W)w);
2896
2897 EV_FREQUENT_CHECK;
2241 2898
2242 { 2899 {
2243 int active = ++idlecnt [ABSPRI (w)]; 2900 int active = ++idlecnt [ABSPRI (w)];
2244 2901
2245 ++idleall; 2902 ++idleall;
2246 ev_start (EV_A_ (W)w, active); 2903 ev_start (EV_A_ (W)w, active);
2247 2904
2248 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2905 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2249 idles [ABSPRI (w)][active - 1] = w; 2906 idles [ABSPRI (w)][active - 1] = w;
2250 } 2907 }
2908
2909 EV_FREQUENT_CHECK;
2251} 2910}
2252 2911
2253void 2912void
2254ev_idle_stop (EV_P_ ev_idle *w) 2913ev_idle_stop (EV_P_ ev_idle *w)
2255{ 2914{
2256 clear_pending (EV_A_ (W)w); 2915 clear_pending (EV_A_ (W)w);
2257 if (expect_false (!ev_is_active (w))) 2916 if (expect_false (!ev_is_active (w)))
2258 return; 2917 return;
2259 2918
2919 EV_FREQUENT_CHECK;
2920
2260 { 2921 {
2261 int active = ((W)w)->active; 2922 int active = ev_active (w);
2262 2923
2263 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2924 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2264 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2925 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2265 2926
2266 ev_stop (EV_A_ (W)w); 2927 ev_stop (EV_A_ (W)w);
2267 --idleall; 2928 --idleall;
2268 } 2929 }
2930
2931 EV_FREQUENT_CHECK;
2269} 2932}
2270#endif 2933#endif
2271 2934
2272void 2935void
2273ev_prepare_start (EV_P_ ev_prepare *w) 2936ev_prepare_start (EV_P_ ev_prepare *w)
2274{ 2937{
2275 if (expect_false (ev_is_active (w))) 2938 if (expect_false (ev_is_active (w)))
2276 return; 2939 return;
2940
2941 EV_FREQUENT_CHECK;
2277 2942
2278 ev_start (EV_A_ (W)w, ++preparecnt); 2943 ev_start (EV_A_ (W)w, ++preparecnt);
2279 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2944 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2280 prepares [preparecnt - 1] = w; 2945 prepares [preparecnt - 1] = w;
2946
2947 EV_FREQUENT_CHECK;
2281} 2948}
2282 2949
2283void 2950void
2284ev_prepare_stop (EV_P_ ev_prepare *w) 2951ev_prepare_stop (EV_P_ ev_prepare *w)
2285{ 2952{
2286 clear_pending (EV_A_ (W)w); 2953 clear_pending (EV_A_ (W)w);
2287 if (expect_false (!ev_is_active (w))) 2954 if (expect_false (!ev_is_active (w)))
2288 return; 2955 return;
2289 2956
2957 EV_FREQUENT_CHECK;
2958
2290 { 2959 {
2291 int active = ((W)w)->active; 2960 int active = ev_active (w);
2961
2292 prepares [active - 1] = prepares [--preparecnt]; 2962 prepares [active - 1] = prepares [--preparecnt];
2293 ((W)prepares [active - 1])->active = active; 2963 ev_active (prepares [active - 1]) = active;
2294 } 2964 }
2295 2965
2296 ev_stop (EV_A_ (W)w); 2966 ev_stop (EV_A_ (W)w);
2967
2968 EV_FREQUENT_CHECK;
2297} 2969}
2298 2970
2299void 2971void
2300ev_check_start (EV_P_ ev_check *w) 2972ev_check_start (EV_P_ ev_check *w)
2301{ 2973{
2302 if (expect_false (ev_is_active (w))) 2974 if (expect_false (ev_is_active (w)))
2303 return; 2975 return;
2976
2977 EV_FREQUENT_CHECK;
2304 2978
2305 ev_start (EV_A_ (W)w, ++checkcnt); 2979 ev_start (EV_A_ (W)w, ++checkcnt);
2306 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2980 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2307 checks [checkcnt - 1] = w; 2981 checks [checkcnt - 1] = w;
2982
2983 EV_FREQUENT_CHECK;
2308} 2984}
2309 2985
2310void 2986void
2311ev_check_stop (EV_P_ ev_check *w) 2987ev_check_stop (EV_P_ ev_check *w)
2312{ 2988{
2313 clear_pending (EV_A_ (W)w); 2989 clear_pending (EV_A_ (W)w);
2314 if (expect_false (!ev_is_active (w))) 2990 if (expect_false (!ev_is_active (w)))
2315 return; 2991 return;
2316 2992
2993 EV_FREQUENT_CHECK;
2994
2317 { 2995 {
2318 int active = ((W)w)->active; 2996 int active = ev_active (w);
2997
2319 checks [active - 1] = checks [--checkcnt]; 2998 checks [active - 1] = checks [--checkcnt];
2320 ((W)checks [active - 1])->active = active; 2999 ev_active (checks [active - 1]) = active;
2321 } 3000 }
2322 3001
2323 ev_stop (EV_A_ (W)w); 3002 ev_stop (EV_A_ (W)w);
3003
3004 EV_FREQUENT_CHECK;
2324} 3005}
2325 3006
2326#if EV_EMBED_ENABLE 3007#if EV_EMBED_ENABLE
2327void noinline 3008void noinline
2328ev_embed_sweep (EV_P_ ev_embed *w) 3009ev_embed_sweep (EV_P_ ev_embed *w)
2355 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3036 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2356 } 3037 }
2357 } 3038 }
2358} 3039}
2359 3040
3041static void
3042embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3043{
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045
3046 ev_embed_stop (EV_A_ w);
3047
3048 {
3049 struct ev_loop *loop = w->other;
3050
3051 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3053 }
3054
3055 ev_embed_start (EV_A_ w);
3056}
3057
2360#if 0 3058#if 0
2361static void 3059static void
2362embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3060embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2363{ 3061{
2364 ev_idle_stop (EV_A_ idle); 3062 ev_idle_stop (EV_A_ idle);
2371 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2372 return; 3070 return;
2373 3071
2374 { 3072 {
2375 struct ev_loop *loop = w->other; 3073 struct ev_loop *loop = w->other;
2376 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2377 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2378 } 3076 }
3077
3078 EV_FREQUENT_CHECK;
2379 3079
2380 ev_set_priority (&w->io, ev_priority (w)); 3080 ev_set_priority (&w->io, ev_priority (w));
2381 ev_io_start (EV_A_ &w->io); 3081 ev_io_start (EV_A_ &w->io);
2382 3082
2383 ev_prepare_init (&w->prepare, embed_prepare_cb); 3083 ev_prepare_init (&w->prepare, embed_prepare_cb);
2384 ev_set_priority (&w->prepare, EV_MINPRI); 3084 ev_set_priority (&w->prepare, EV_MINPRI);
2385 ev_prepare_start (EV_A_ &w->prepare); 3085 ev_prepare_start (EV_A_ &w->prepare);
2386 3086
3087 ev_fork_init (&w->fork, embed_fork_cb);
3088 ev_fork_start (EV_A_ &w->fork);
3089
2387 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3090 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2388 3091
2389 ev_start (EV_A_ (W)w, 1); 3092 ev_start (EV_A_ (W)w, 1);
3093
3094 EV_FREQUENT_CHECK;
2390} 3095}
2391 3096
2392void 3097void
2393ev_embed_stop (EV_P_ ev_embed *w) 3098ev_embed_stop (EV_P_ ev_embed *w)
2394{ 3099{
2395 clear_pending (EV_A_ (W)w); 3100 clear_pending (EV_A_ (W)w);
2396 if (expect_false (!ev_is_active (w))) 3101 if (expect_false (!ev_is_active (w)))
2397 return; 3102 return;
2398 3103
3104 EV_FREQUENT_CHECK;
3105
2399 ev_io_stop (EV_A_ &w->io); 3106 ev_io_stop (EV_A_ &w->io);
2400 ev_prepare_stop (EV_A_ &w->prepare); 3107 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork);
2401 3109
2402 ev_stop (EV_A_ (W)w); 3110 EV_FREQUENT_CHECK;
2403} 3111}
2404#endif 3112#endif
2405 3113
2406#if EV_FORK_ENABLE 3114#if EV_FORK_ENABLE
2407void 3115void
2408ev_fork_start (EV_P_ ev_fork *w) 3116ev_fork_start (EV_P_ ev_fork *w)
2409{ 3117{
2410 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
2411 return; 3119 return;
3120
3121 EV_FREQUENT_CHECK;
2412 3122
2413 ev_start (EV_A_ (W)w, ++forkcnt); 3123 ev_start (EV_A_ (W)w, ++forkcnt);
2414 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3124 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2415 forks [forkcnt - 1] = w; 3125 forks [forkcnt - 1] = w;
3126
3127 EV_FREQUENT_CHECK;
2416} 3128}
2417 3129
2418void 3130void
2419ev_fork_stop (EV_P_ ev_fork *w) 3131ev_fork_stop (EV_P_ ev_fork *w)
2420{ 3132{
2421 clear_pending (EV_A_ (W)w); 3133 clear_pending (EV_A_ (W)w);
2422 if (expect_false (!ev_is_active (w))) 3134 if (expect_false (!ev_is_active (w)))
2423 return; 3135 return;
2424 3136
3137 EV_FREQUENT_CHECK;
3138
2425 { 3139 {
2426 int active = ((W)w)->active; 3140 int active = ev_active (w);
3141
2427 forks [active - 1] = forks [--forkcnt]; 3142 forks [active - 1] = forks [--forkcnt];
2428 ((W)forks [active - 1])->active = active; 3143 ev_active (forks [active - 1]) = active;
2429 } 3144 }
2430 3145
2431 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
3147
3148 EV_FREQUENT_CHECK;
2432} 3149}
2433#endif 3150#endif
2434 3151
2435#if EV_ASYNC_ENABLE 3152#if EV_ASYNC_ENABLE
2436void 3153void
2438{ 3155{
2439 if (expect_false (ev_is_active (w))) 3156 if (expect_false (ev_is_active (w)))
2440 return; 3157 return;
2441 3158
2442 evpipe_init (EV_A); 3159 evpipe_init (EV_A);
3160
3161 EV_FREQUENT_CHECK;
2443 3162
2444 ev_start (EV_A_ (W)w, ++asynccnt); 3163 ev_start (EV_A_ (W)w, ++asynccnt);
2445 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3164 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2446 asyncs [asynccnt - 1] = w; 3165 asyncs [asynccnt - 1] = w;
3166
3167 EV_FREQUENT_CHECK;
2447} 3168}
2448 3169
2449void 3170void
2450ev_async_stop (EV_P_ ev_async *w) 3171ev_async_stop (EV_P_ ev_async *w)
2451{ 3172{
2452 clear_pending (EV_A_ (W)w); 3173 clear_pending (EV_A_ (W)w);
2453 if (expect_false (!ev_is_active (w))) 3174 if (expect_false (!ev_is_active (w)))
2454 return; 3175 return;
2455 3176
3177 EV_FREQUENT_CHECK;
3178
2456 { 3179 {
2457 int active = ((W)w)->active; 3180 int active = ev_active (w);
3181
2458 asyncs [active - 1] = asyncs [--asynccnt]; 3182 asyncs [active - 1] = asyncs [--asynccnt];
2459 ((W)asyncs [active - 1])->active = active; 3183 ev_active (asyncs [active - 1]) = active;
2460 } 3184 }
2461 3185
2462 ev_stop (EV_A_ (W)w); 3186 ev_stop (EV_A_ (W)w);
3187
3188 EV_FREQUENT_CHECK;
2463} 3189}
2464 3190
2465void 3191void
2466ev_async_send (EV_P_ ev_async *w) 3192ev_async_send (EV_P_ ev_async *w)
2467{ 3193{
2468 w->sent = 1; 3194 w->sent = 1;
2469 evpipe_write (EV_A_ 0, 1); 3195 evpipe_write (EV_A_ &gotasync);
2470} 3196}
2471#endif 3197#endif
2472 3198
2473/*****************************************************************************/ 3199/*****************************************************************************/
2474 3200
2484once_cb (EV_P_ struct ev_once *once, int revents) 3210once_cb (EV_P_ struct ev_once *once, int revents)
2485{ 3211{
2486 void (*cb)(int revents, void *arg) = once->cb; 3212 void (*cb)(int revents, void *arg) = once->cb;
2487 void *arg = once->arg; 3213 void *arg = once->arg;
2488 3214
2489 ev_io_stop (EV_A_ &once->io); 3215 ev_io_stop (EV_A_ &once->io);
2490 ev_timer_stop (EV_A_ &once->to); 3216 ev_timer_stop (EV_A_ &once->to);
2491 ev_free (once); 3217 ev_free (once);
2492 3218
2493 cb (revents, arg); 3219 cb (revents, arg);
2494} 3220}
2495 3221
2496static void 3222static void
2497once_cb_io (EV_P_ ev_io *w, int revents) 3223once_cb_io (EV_P_ ev_io *w, int revents)
2498{ 3224{
2499 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3225 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3226
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2500} 3228}
2501 3229
2502static void 3230static void
2503once_cb_to (EV_P_ ev_timer *w, int revents) 3231once_cb_to (EV_P_ ev_timer *w, int revents)
2504{ 3232{
2505 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3233 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3234
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2506} 3236}
2507 3237
2508void 3238void
2509ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2510{ 3240{
2532 ev_timer_set (&once->to, timeout, 0.); 3262 ev_timer_set (&once->to, timeout, 0.);
2533 ev_timer_start (EV_A_ &once->to); 3263 ev_timer_start (EV_A_ &once->to);
2534 } 3264 }
2535} 3265}
2536 3266
3267/*****************************************************************************/
3268
3269#if EV_WALK_ENABLE
3270void
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3272{
3273 int i, j;
3274 ev_watcher_list *wl, *wn;
3275
3276 if (types & (EV_IO | EV_EMBED))
3277 for (i = 0; i < anfdmax; ++i)
3278 for (wl = anfds [i].head; wl; )
3279 {
3280 wn = wl->next;
3281
3282#if EV_EMBED_ENABLE
3283 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3284 {
3285 if (types & EV_EMBED)
3286 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3287 }
3288 else
3289#endif
3290#if EV_USE_INOTIFY
3291 if (ev_cb ((ev_io *)wl) == infy_cb)
3292 ;
3293 else
3294#endif
3295 if ((ev_io *)wl != &pipe_w)
3296 if (types & EV_IO)
3297 cb (EV_A_ EV_IO, wl);
3298
3299 wl = wn;
3300 }
3301
3302 if (types & (EV_TIMER | EV_STAT))
3303 for (i = timercnt + HEAP0; i-- > HEAP0; )
3304#if EV_STAT_ENABLE
3305 /*TODO: timer is not always active*/
3306 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3307 {
3308 if (types & EV_STAT)
3309 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3310 }
3311 else
3312#endif
3313 if (types & EV_TIMER)
3314 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3315
3316#if EV_PERIODIC_ENABLE
3317 if (types & EV_PERIODIC)
3318 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif
3321
3322#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; )
3325 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif
3328
3329#if EV_FORK_ENABLE
3330 if (types & EV_FORK)
3331 for (i = forkcnt; i--; )
3332 if (ev_cb (forks [i]) != embed_fork_cb)
3333 cb (EV_A_ EV_FORK, forks [i]);
3334#endif
3335
3336#if EV_ASYNC_ENABLE
3337 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif
3341
3342 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]);
3348
3349 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]);
3352
3353 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i)
3355 for (wl = signals [i].head; wl; )
3356 {
3357 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn;
3360 }
3361
3362 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; )
3364 for (wl = childs [i]; wl; )
3365 {
3366 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn;
3369 }
3370/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372}
3373#endif
3374
2537#if EV_MULTIPLICITY 3375#if EV_MULTIPLICITY
2538 #include "ev_wrap.h" 3376 #include "ev_wrap.h"
2539#endif 3377#endif
2540 3378
2541#ifdef __cplusplus 3379#ifdef __cplusplus

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