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Comparing libev/ev.c (file contents):
Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC vs.
Revision 1.295 by root, Wed Jul 8 04:29:31 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)
… …
278# define inline_speed static noinline 391# define inline_speed static noinline
279#else 392#else
280# define inline_speed static inline 393# define inline_speed static inline
281#endif 394#endif
282 395
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397
398#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0)
400#else
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
285 403
286#define EMPTY /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
288 406
289typedef ev_watcher *W; 407typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 408typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
292 410
293#if EV_USE_MONOTONIC 411#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at
413
414#if EV_USE_REALTIME
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 415/* 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 */ 416/* giving it a reasonably high chance of working on typical architetcures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif
419
420#if EV_USE_MONOTONIC
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif 422#endif
298 423
299#ifdef _WIN32 424#ifdef _WIN32
300# include "ev_win32.c" 425# include "ev_win32.c"
… …
309{ 434{
310 syserr_cb = cb; 435 syserr_cb = cb;
311} 436}
312 437
313static void noinline 438static void noinline
314syserr (const char *msg) 439ev_syserr (const char *msg)
315{ 440{
316 if (!msg) 441 if (!msg)
317 msg = "(libev) system error"; 442 msg = "(libev) system error";
318 443
319 if (syserr_cb) 444 if (syserr_cb)
… …
323 perror (msg); 448 perror (msg);
324 abort (); 449 abort ();
325 } 450 }
326} 451}
327 452
453static void *
454ev_realloc_emul (void *ptr, long size)
455{
456 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and
458 * the single unix specification, so work around them here.
459 */
460
461 if (size)
462 return realloc (ptr, size);
463
464 free (ptr);
465 return 0;
466}
467
328static void *(*alloc)(void *ptr, long size); 468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 469
330void 470void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 471ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 472{
333 alloc = cb; 473 alloc = cb;
334} 474}
335 475
336inline_speed void * 476inline_speed void *
337ev_realloc (void *ptr, long size) 477ev_realloc (void *ptr, long size)
338{ 478{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 479 ptr = alloc (ptr, size);
340 480
341 if (!ptr && size) 481 if (!ptr && size)
342 { 482 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 484 abort ();
… …
350#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
352 492
353/*****************************************************************************/ 493/*****************************************************************************/
354 494
495/* file descriptor info structure */
355typedef struct 496typedef struct
356{ 497{
357 WL head; 498 WL head;
358 unsigned char events; 499 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359 unsigned char reify; 502 unsigned char unused;
503#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif
360#if EV_SELECT_IS_WINSOCKET 506#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle; 507 SOCKET handle;
362#endif 508#endif
363} ANFD; 509} ANFD;
364 510
511/* stores the pending event set for a given watcher */
365typedef struct 512typedef struct
366{ 513{
367 W w; 514 W w;
368 int events; 515 int events; /* the pending event set for the given watcher */
369} ANPENDING; 516} ANPENDING;
370 517
371#if EV_USE_INOTIFY 518#if EV_USE_INOTIFY
519/* hash table entry per inotify-id */
372typedef struct 520typedef struct
373{ 521{
374 WL head; 522 WL head;
375} ANFS; 523} ANFS;
524#endif
525
526/* Heap Entry */
527#if EV_HEAP_CACHE_AT
528 /* a heap element */
529 typedef struct {
530 ev_tstamp at;
531 WT w;
532 } ANHE;
533
534 #define ANHE_w(he) (he).w /* access watcher, read-write */
535 #define ANHE_at(he) (he).at /* access cached at, read-only */
536 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
537#else
538 /* a heap element */
539 typedef WT ANHE;
540
541 #define ANHE_w(he) (he)
542 #define ANHE_at(he) (he)->at
543 #define ANHE_at_cache(he)
376#endif 544#endif
377 545
378#if EV_MULTIPLICITY 546#if EV_MULTIPLICITY
379 547
380 struct ev_loop 548 struct ev_loop
… …
401 569
402#endif 570#endif
403 571
404/*****************************************************************************/ 572/*****************************************************************************/
405 573
574#ifndef EV_HAVE_EV_TIME
406ev_tstamp 575ev_tstamp
407ev_time (void) 576ev_time (void)
408{ 577{
409#if EV_USE_REALTIME 578#if EV_USE_REALTIME
579 if (expect_true (have_realtime))
580 {
410 struct timespec ts; 581 struct timespec ts;
411 clock_gettime (CLOCK_REALTIME, &ts); 582 clock_gettime (CLOCK_REALTIME, &ts);
412 return ts.tv_sec + ts.tv_nsec * 1e-9; 583 return ts.tv_sec + ts.tv_nsec * 1e-9;
413#else 584 }
585#endif
586
414 struct timeval tv; 587 struct timeval tv;
415 gettimeofday (&tv, 0); 588 gettimeofday (&tv, 0);
416 return tv.tv_sec + tv.tv_usec * 1e-6; 589 return tv.tv_sec + tv.tv_usec * 1e-6;
417#endif
418} 590}
591#endif
419 592
420ev_tstamp inline_size 593inline_size ev_tstamp
421get_clock (void) 594get_clock (void)
422{ 595{
423#if EV_USE_MONOTONIC 596#if EV_USE_MONOTONIC
424 if (expect_true (have_monotonic)) 597 if (expect_true (have_monotonic))
425 { 598 {
… …
451 ts.tv_sec = (time_t)delay; 624 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 626
454 nanosleep (&ts, 0); 627 nanosleep (&ts, 0);
455#elif defined(_WIN32) 628#elif defined(_WIN32)
456 Sleep (delay * 1e3); 629 Sleep ((unsigned long)(delay * 1e3));
457#else 630#else
458 struct timeval tv; 631 struct timeval tv;
459 632
460 tv.tv_sec = (time_t)delay; 633 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462 635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */
463 select (0, 0, 0, 0, &tv); 639 select (0, 0, 0, 0, &tv);
464#endif 640#endif
465 } 641 }
466} 642}
467 643
468/*****************************************************************************/ 644/*****************************************************************************/
469 645
470int inline_size 646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647
648/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */
650inline_size int
471array_nextsize (int elem, int cur, int cnt) 651array_nextsize (int elem, int cur, int cnt)
472{ 652{
473 int ncur = cur + 1; 653 int ncur = cur + 1;
474 654
475 do 655 do
476 ncur <<= 1; 656 ncur <<= 1;
477 while (cnt > ncur); 657 while (cnt > ncur);
478 658
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 661 {
482 ncur *= elem; 662 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 664 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 665 ncur /= elem;
486 } 666 }
487 667
488 return ncur; 668 return ncur;
… …
492array_realloc (int elem, void *base, int *cur, int cnt) 672array_realloc (int elem, void *base, int *cur, int cnt)
493{ 673{
494 *cur = array_nextsize (elem, *cur, cnt); 674 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur); 675 return ev_realloc (base, elem * *cur);
496} 676}
677
678#define array_init_zero(base,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count))
497 680
498#define array_needsize(type,base,cur,cnt,init) \ 681#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \ 682 if (expect_false ((cnt) > (cur))) \
500 { \ 683 { \
501 int ocur_ = (cur); \ 684 int ocur_ = (cur); \
… …
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 696 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 } 697 }
515#endif 698#endif
516 699
517#define array_free(stem, idx) \ 700#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519 702
520/*****************************************************************************/ 703/*****************************************************************************/
704
705/* dummy callback for pending events */
706static void noinline
707pendingcb (EV_P_ ev_prepare *w, int revents)
708{
709}
521 710
522void noinline 711void noinline
523ev_feed_event (EV_P_ void *w, int revents) 712ev_feed_event (EV_P_ void *w, int revents)
524{ 713{
525 W w_ = (W)w; 714 W w_ = (W)w;
… …
534 pendings [pri][w_->pending - 1].w = w_; 723 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents; 724 pendings [pri][w_->pending - 1].events = revents;
536 } 725 }
537} 726}
538 727
539void inline_speed 728inline_speed void
729feed_reverse (EV_P_ W w)
730{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
732 rfeeds [rfeedcnt++] = w;
733}
734
735inline_size void
736feed_reverse_done (EV_P_ int revents)
737{
738 do
739 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
740 while (rfeedcnt);
741}
742
743inline_speed void
540queue_events (EV_P_ W *events, int eventcnt, int type) 744queue_events (EV_P_ W *events, int eventcnt, int type)
541{ 745{
542 int i; 746 int i;
543 747
544 for (i = 0; i < eventcnt; ++i) 748 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type); 749 ev_feed_event (EV_A_ events [i], type);
546} 750}
547 751
548/*****************************************************************************/ 752/*****************************************************************************/
549 753
550void inline_size 754inline_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) 755fd_event (EV_P_ int fd, int revents)
565{ 756{
566 ANFD *anfd = anfds + fd; 757 ANFD *anfd = anfds + fd;
567 ev_io *w; 758 ev_io *w;
568 759
… …
580{ 771{
581 if (fd >= 0 && fd < anfdmax) 772 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents); 773 fd_event (EV_A_ fd, revents);
583} 774}
584 775
585void inline_size 776/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */
778inline_size void
586fd_reify (EV_P) 779fd_reify (EV_P)
587{ 780{
588 int i; 781 int i;
589 782
590 for (i = 0; i < fdchangecnt; ++i) 783 for (i = 0; i < fdchangecnt; ++i)
… …
599 events |= (unsigned char)w->events; 792 events |= (unsigned char)w->events;
600 793
601#if EV_SELECT_IS_WINSOCKET 794#if EV_SELECT_IS_WINSOCKET
602 if (events) 795 if (events)
603 { 796 {
604 unsigned long argp; 797 unsigned long arg;
605 #ifdef EV_FD_TO_WIN32_HANDLE 798 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else 800 #else
608 anfd->handle = _get_osfhandle (fd); 801 anfd->handle = _get_osfhandle (fd);
609 #endif 802 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
611 } 804 }
612#endif 805#endif
613 806
614 { 807 {
615 unsigned char o_events = anfd->events; 808 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify; 809 unsigned char o_reify = anfd->reify;
617 810
618 anfd->reify = 0; 811 anfd->reify = 0;
619 anfd->events = events; 812 anfd->events = events;
620 813
621 if (o_events != events || o_reify & EV_IOFDSET) 814 if (o_events != events || o_reify & EV__IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events); 815 backend_modify (EV_A_ fd, o_events, events);
623 } 816 }
624 } 817 }
625 818
626 fdchangecnt = 0; 819 fdchangecnt = 0;
627} 820}
628 821
629void inline_size 822/* something about the given fd changed */
823inline_size void
630fd_change (EV_P_ int fd, int flags) 824fd_change (EV_P_ int fd, int flags)
631{ 825{
632 unsigned char reify = anfds [fd].reify; 826 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags; 827 anfds [fd].reify |= flags;
634 828
… …
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd; 833 fdchanges [fdchangecnt - 1] = fd;
640 } 834 }
641} 835}
642 836
643void inline_speed 837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void
644fd_kill (EV_P_ int fd) 839fd_kill (EV_P_ int fd)
645{ 840{
646 ev_io *w; 841 ev_io *w;
647 842
648 while ((w = (ev_io *)anfds [fd].head)) 843 while ((w = (ev_io *)anfds [fd].head))
… …
650 ev_io_stop (EV_A_ w); 845 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 } 847 }
653} 848}
654 849
655int inline_size 850/* check whether the given fd is atcually valid, for error recovery */
851inline_size int
656fd_valid (int fd) 852fd_valid (int fd)
657{ 853{
658#ifdef _WIN32 854#ifdef _WIN32
659 return _get_osfhandle (fd) != -1; 855 return _get_osfhandle (fd) != -1;
660#else 856#else
… …
668{ 864{
669 int fd; 865 int fd;
670 866
671 for (fd = 0; fd < anfdmax; ++fd) 867 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events) 868 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF) 869 if (!fd_valid (fd) && errno == EBADF)
674 fd_kill (EV_A_ fd); 870 fd_kill (EV_A_ fd);
675} 871}
676 872
677/* called on ENOMEM in select/poll to kill some fds and retry */ 873/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline 874static void noinline
… …
696 892
697 for (fd = 0; fd < anfdmax; ++fd) 893 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events) 894 if (anfds [fd].events)
699 { 895 {
700 anfds [fd].events = 0; 896 anfds [fd].events = 0;
897 anfds [fd].emask = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1); 898 fd_change (EV_A_ fd, EV__IOFDSET | 1);
702 } 899 }
703} 900}
704 901
705/*****************************************************************************/ 902/*****************************************************************************/
706 903
707void inline_speed 904/*
708upheap (WT *heap, int k) 905 * the heap functions want a real array index. array index 0 uis guaranteed to not
709{ 906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
710 WT w = heap [k]; 907 * the branching factor of the d-tree.
908 */
711 909
712 while (k) 910/*
713 { 911 * at the moment we allow libev the luxury of two heaps,
714 int p = (k - 1) >> 1; 912 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
913 * which is more cache-efficient.
914 * the difference is about 5% with 50000+ watchers.
915 */
916#if EV_USE_4HEAP
715 917
716 if (heap [p]->at <= w->at) 918#define DHEAP 4
919#define HEAP0 (DHEAP - 1) /* index of first element in heap */
920#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
921#define UPHEAP_DONE(p,k) ((p) == (k))
922
923/* away from the root */
924inline_speed void
925downheap (ANHE *heap, int N, int k)
926{
927 ANHE he = heap [k];
928 ANHE *E = heap + N + HEAP0;
929
930 for (;;)
931 {
932 ev_tstamp minat;
933 ANHE *minpos;
934 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
935
936 /* find minimum child */
937 if (expect_true (pos + DHEAP - 1 < E))
938 {
939 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 }
944 else if (pos < E)
945 {
946 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
947 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
948 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
949 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
950 }
951 else
717 break; 952 break;
718 953
954 if (ANHE_at (he) <= minat)
955 break;
956
957 heap [k] = *minpos;
958 ev_active (ANHE_w (*minpos)) = k;
959
960 k = minpos - heap;
961 }
962
963 heap [k] = he;
964 ev_active (ANHE_w (he)) = k;
965}
966
967#else /* 4HEAP */
968
969#define HEAP0 1
970#define HPARENT(k) ((k) >> 1)
971#define UPHEAP_DONE(p,k) (!(p))
972
973/* away from the root */
974inline_speed void
975downheap (ANHE *heap, int N, int k)
976{
977 ANHE he = heap [k];
978
979 for (;;)
980 {
981 int c = k << 1;
982
983 if (c > N + HEAP0 - 1)
984 break;
985
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0;
988
989 if (ANHE_at (he) <= ANHE_at (heap [c]))
990 break;
991
992 heap [k] = heap [c];
993 ev_active (ANHE_w (heap [k])) = k;
994
995 k = c;
996 }
997
998 heap [k] = he;
999 ev_active (ANHE_w (he)) = k;
1000}
1001#endif
1002
1003/* towards the root */
1004inline_speed void
1005upheap (ANHE *heap, int k)
1006{
1007 ANHE he = heap [k];
1008
1009 for (;;)
1010 {
1011 int p = HPARENT (k);
1012
1013 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1014 break;
1015
719 heap [k] = heap [p]; 1016 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 1017 ev_active (ANHE_w (heap [k])) = k;
721 k = p; 1018 k = p;
722 } 1019 }
723 1020
724 heap [k] = w; 1021 heap [k] = he;
725 ((W)heap [k])->active = k + 1; 1022 ev_active (ANHE_w (he)) = k;
726} 1023}
727 1024
728void inline_speed 1025/* move an element suitably so it is in a correct place */
729downheap (WT *heap, int N, int k) 1026inline_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) 1027adjustheap (ANHE *heap, int N, int k)
758{ 1028{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
759 upheap (heap, k); 1030 upheap (heap, k);
1031 else
760 downheap (heap, N, k); 1032 downheap (heap, N, k);
1033}
1034
1035/* rebuild the heap: this function is used only once and executed rarely */
1036inline_size void
1037reheap (ANHE *heap, int N)
1038{
1039 int i;
1040
1041 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1042 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1043 for (i = 0; i < N; ++i)
1044 upheap (heap, i + HEAP0);
761} 1045}
762 1046
763/*****************************************************************************/ 1047/*****************************************************************************/
764 1048
1049/* associate signal watchers to a signal signal */
765typedef struct 1050typedef struct
766{ 1051{
767 WL head; 1052 WL head;
768 EV_ATOMIC_T gotsig; 1053 EV_ATOMIC_T gotsig;
769} ANSIG; 1054} ANSIG;
… …
771static ANSIG *signals; 1056static ANSIG *signals;
772static int signalmax; 1057static int signalmax;
773 1058
774static EV_ATOMIC_T gotsig; 1059static EV_ATOMIC_T gotsig;
775 1060
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/*****************************************************************************/ 1061/*****************************************************************************/
789 1062
790void inline_speed 1063/* used to prepare libev internal fd's */
1064/* this is not fork-safe */
1065inline_speed void
791fd_intern (int fd) 1066fd_intern (int fd)
792{ 1067{
793#ifdef _WIN32 1068#ifdef _WIN32
794 int arg = 1; 1069 unsigned long arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else 1071#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC); 1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK); 1073 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif 1074#endif
800} 1075}
801 1076
802static void noinline 1077static void noinline
803evpipe_init (EV_P) 1078evpipe_init (EV_P)
804{ 1079{
805 if (!ev_is_active (&pipeev)) 1080 if (!ev_is_active (&pipe_w))
806 { 1081 {
1082#if EV_USE_EVENTFD
1083 if ((evfd = eventfd (0, 0)) >= 0)
1084 {
1085 evpipe [0] = -1;
1086 fd_intern (evfd);
1087 ev_io_set (&pipe_w, evfd, EV_READ);
1088 }
1089 else
1090#endif
1091 {
807 while (pipe (evpipe)) 1092 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe"); 1093 ev_syserr ("(libev) error creating signal/async pipe");
809 1094
810 fd_intern (evpipe [0]); 1095 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]); 1096 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ); 1097 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1098 }
1099
814 ev_io_start (EV_A_ &pipeev); 1100 ev_io_start (EV_A_ &pipe_w);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1101 ev_unref (EV_A); /* watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 { 1102 }
824 int old_errno = errno; 1103}
825 1104
826 if (sig) gotsig = 1; 1105inline_size void
827 if (async) gotasync = 1; 1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{
1108 if (!*flag)
1109 {
1110 int old_errno = errno; /* save errno because write might clobber it */
828 1111
1112 *flag = 1;
1113
1114#if EV_USE_EVENTFD
1115 if (evfd >= 0)
1116 {
1117 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t));
1119 }
1120 else
1121#endif
829 write (evpipe [1], &old_errno, 1); 1122 write (evpipe [1], &old_errno, 1);
1123
830 errno = old_errno; 1124 errno = old_errno;
831 } 1125 }
832} 1126}
833 1127
1128/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */
834static void 1130static void
835pipecb (EV_P_ ev_io *iow, int revents) 1131pipecb (EV_P_ ev_io *iow, int revents)
836{ 1132{
1133#if EV_USE_EVENTFD
1134 if (evfd >= 0)
837 { 1135 {
838 int dummy; 1136 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t));
1138 }
1139 else
1140#endif
1141 {
1142 char dummy;
839 read (evpipe [0], &dummy, 1); 1143 read (evpipe [0], &dummy, 1);
840 } 1144 }
841 1145
842 if (gotsig) 1146 if (gotsig && ev_is_default_loop (EV_A))
843 { 1147 {
844 int signum; 1148 int signum;
845 gotsig = 0; 1149 gotsig = 0;
846 1150
847 for (signum = signalmax; signum--; ) 1151 for (signum = signalmax; signum--; )
… …
866} 1170}
867 1171
868/*****************************************************************************/ 1172/*****************************************************************************/
869 1173
870static void 1174static void
871sighandler (int signum) 1175ev_sighandler (int signum)
872{ 1176{
873#if EV_MULTIPLICITY 1177#if EV_MULTIPLICITY
874 struct ev_loop *loop = &default_loop_struct; 1178 struct ev_loop *loop = &default_loop_struct;
875#endif 1179#endif
876 1180
877#if _WIN32 1181#if _WIN32
878 signal (signum, sighandler); 1182 signal (signum, ev_sighandler);
879#endif 1183#endif
880 1184
881 signals [signum - 1].gotsig = 1; 1185 signals [signum - 1].gotsig = 1;
882 evpipe_write (EV_A_ 1, 0); 1186 evpipe_write (EV_A_ &gotsig);
883} 1187}
884 1188
885void noinline 1189void noinline
886ev_feed_signal_event (EV_P_ int signum) 1190ev_feed_signal_event (EV_P_ int signum)
887{ 1191{
888 WL w; 1192 WL w;
889 1193
890#if EV_MULTIPLICITY 1194#if EV_MULTIPLICITY
891 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
892#endif 1196#endif
893 1197
894 --signum; 1198 --signum;
895 1199
896 if (signum < 0 || signum >= signalmax) 1200 if (signum < 0 || signum >= signalmax)
… …
912 1216
913#ifndef WIFCONTINUED 1217#ifndef WIFCONTINUED
914# define WIFCONTINUED(status) 0 1218# define WIFCONTINUED(status) 0
915#endif 1219#endif
916 1220
917void inline_speed 1221/* handle a single child status event */
1222inline_speed void
918child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1223child_reap (EV_P_ int chain, int pid, int status)
919{ 1224{
920 ev_child *w; 1225 ev_child *w;
921 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
922 1227
923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
924 { 1229 {
925 if ((w->pid == pid || !w->pid) 1230 if ((w->pid == pid || !w->pid)
926 && (!traced || (w->flags & 1))) 1231 && (!traced || (w->flags & 1)))
927 { 1232 {
928 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
929 w->rpid = pid; 1234 w->rpid = pid;
930 w->rstatus = status; 1235 w->rstatus = status;
931 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1236 ev_feed_event (EV_A_ (W)w, EV_CHILD);
932 } 1237 }
933 } 1238 }
… …
935 1240
936#ifndef WCONTINUED 1241#ifndef WCONTINUED
937# define WCONTINUED 0 1242# define WCONTINUED 0
938#endif 1243#endif
939 1244
1245/* called on sigchld etc., calls waitpid */
940static void 1246static void
941childcb (EV_P_ ev_signal *sw, int revents) 1247childcb (EV_P_ ev_signal *sw, int revents)
942{ 1248{
943 int pid, status; 1249 int pid, status;
944 1250
… …
947 if (!WCONTINUED 1253 if (!WCONTINUED
948 || errno != EINVAL 1254 || errno != EINVAL
949 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1255 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
950 return; 1256 return;
951 1257
952 /* make sure we are called again until all childs have been reaped */ 1258 /* make sure we are called again until all children have been reaped */
953 /* we need to do it this way so that the callback gets called before we continue */ 1259 /* we need to do it this way so that the callback gets called before we continue */
954 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
955 1261
956 child_reap (EV_A_ sw, pid, pid, status); 1262 child_reap (EV_A_ pid, pid, status);
957 if (EV_PID_HASHSIZE > 1) 1263 if (EV_PID_HASHSIZE > 1)
958 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
959} 1265}
960 1266
961#endif 1267#endif
962 1268
963/*****************************************************************************/ 1269/*****************************************************************************/
… …
1025 /* kqueue is borked on everything but netbsd apparently */ 1331 /* kqueue is borked on everything but netbsd apparently */
1026 /* it usually doesn't work correctly on anything but sockets and pipes */ 1332 /* it usually doesn't work correctly on anything but sockets and pipes */
1027 flags &= ~EVBACKEND_KQUEUE; 1333 flags &= ~EVBACKEND_KQUEUE;
1028#endif 1334#endif
1029#ifdef __APPLE__ 1335#ifdef __APPLE__
1030 // flags &= ~EVBACKEND_KQUEUE; for documentation 1336 /* only select works correctly on that "unix-certified" platform */
1031 flags &= ~EVBACKEND_POLL; 1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1032#endif 1339#endif
1033 1340
1034 return flags; 1341 return flags;
1035} 1342}
1036 1343
… …
1056ev_loop_count (EV_P) 1363ev_loop_count (EV_P)
1057{ 1364{
1058 return loop_count; 1365 return loop_count;
1059} 1366}
1060 1367
1368unsigned int
1369ev_loop_depth (EV_P)
1370{
1371 return loop_depth;
1372}
1373
1061void 1374void
1062ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1063{ 1376{
1064 io_blocktime = interval; 1377 io_blocktime = interval;
1065} 1378}
… …
1068ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1069{ 1382{
1070 timeout_blocktime = interval; 1383 timeout_blocktime = interval;
1071} 1384}
1072 1385
1386/* initialise a loop structure, must be zero-initialised */
1073static void noinline 1387static void noinline
1074loop_init (EV_P_ unsigned int flags) 1388loop_init (EV_P_ unsigned int flags)
1075{ 1389{
1076 if (!backend) 1390 if (!backend)
1077 { 1391 {
1392#if EV_USE_REALTIME
1393 if (!have_realtime)
1394 {
1395 struct timespec ts;
1396
1397 if (!clock_gettime (CLOCK_REALTIME, &ts))
1398 have_realtime = 1;
1399 }
1400#endif
1401
1078#if EV_USE_MONOTONIC 1402#if EV_USE_MONOTONIC
1403 if (!have_monotonic)
1079 { 1404 {
1080 struct timespec ts; 1405 struct timespec ts;
1406
1081 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1082 have_monotonic = 1; 1408 have_monotonic = 1;
1083 } 1409 }
1084#endif 1410#endif
1085 1411
1086 ev_rt_now = ev_time (); 1412 ev_rt_now = ev_time ();
1087 mn_now = get_clock (); 1413 mn_now = get_clock ();
1088 now_floor = mn_now; 1414 now_floor = mn_now;
… …
1106 if (!(flags & EVFLAG_NOENV) 1432 if (!(flags & EVFLAG_NOENV)
1107 && !enable_secure () 1433 && !enable_secure ()
1108 && getenv ("LIBEV_FLAGS")) 1434 && getenv ("LIBEV_FLAGS"))
1109 flags = atoi (getenv ("LIBEV_FLAGS")); 1435 flags = atoi (getenv ("LIBEV_FLAGS"));
1110 1436
1111 if (!(flags & 0x0000ffffUL)) 1437 if (!(flags & 0x0000ffffU))
1112 flags |= ev_recommended_backends (); 1438 flags |= ev_recommended_backends ();
1113 1439
1114#if EV_USE_PORT 1440#if EV_USE_PORT
1115 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1441 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1116#endif 1442#endif
… …
1125#endif 1451#endif
1126#if EV_USE_SELECT 1452#if EV_USE_SELECT
1127 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1453 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1128#endif 1454#endif
1129 1455
1456 ev_prepare_init (&pending_w, pendingcb);
1457
1130 ev_init (&pipeev, pipecb); 1458 ev_init (&pipe_w, pipecb);
1131 ev_set_priority (&pipeev, EV_MAXPRI); 1459 ev_set_priority (&pipe_w, EV_MAXPRI);
1132 } 1460 }
1133} 1461}
1134 1462
1463/* free up a loop structure */
1135static void noinline 1464static void noinline
1136loop_destroy (EV_P) 1465loop_destroy (EV_P)
1137{ 1466{
1138 int i; 1467 int i;
1139 1468
1140 if (ev_is_active (&pipeev)) 1469 if (ev_is_active (&pipe_w))
1141 { 1470 {
1142 ev_ref (EV_A); /* signal watcher */ 1471 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &pipeev); 1472 ev_io_stop (EV_A_ &pipe_w);
1144 1473
1145 close (evpipe [0]); evpipe [0] = 0; 1474#if EV_USE_EVENTFD
1146 close (evpipe [1]); evpipe [1] = 0; 1475 if (evfd >= 0)
1476 close (evfd);
1477#endif
1478
1479 if (evpipe [0] >= 0)
1480 {
1481 close (evpipe [0]);
1482 close (evpipe [1]);
1483 }
1147 } 1484 }
1148 1485
1149#if EV_USE_INOTIFY 1486#if EV_USE_INOTIFY
1150 if (fs_fd >= 0) 1487 if (fs_fd >= 0)
1151 close (fs_fd); 1488 close (fs_fd);
… …
1179 } 1516 }
1180 1517
1181 ev_free (anfds); anfdmax = 0; 1518 ev_free (anfds); anfdmax = 0;
1182 1519
1183 /* have to use the microsoft-never-gets-it-right macro */ 1520 /* have to use the microsoft-never-gets-it-right macro */
1521 array_free (rfeed, EMPTY);
1184 array_free (fdchange, EMPTY); 1522 array_free (fdchange, EMPTY);
1185 array_free (timer, EMPTY); 1523 array_free (timer, EMPTY);
1186#if EV_PERIODIC_ENABLE 1524#if EV_PERIODIC_ENABLE
1187 array_free (periodic, EMPTY); 1525 array_free (periodic, EMPTY);
1188#endif 1526#endif
… …
1196#endif 1534#endif
1197 1535
1198 backend = 0; 1536 backend = 0;
1199} 1537}
1200 1538
1539#if EV_USE_INOTIFY
1201void inline_size infy_fork (EV_P); 1540inline_size void infy_fork (EV_P);
1541#endif
1202 1542
1203void inline_size 1543inline_size void
1204loop_fork (EV_P) 1544loop_fork (EV_P)
1205{ 1545{
1206#if EV_USE_PORT 1546#if EV_USE_PORT
1207 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1547 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1208#endif 1548#endif
… …
1214#endif 1554#endif
1215#if EV_USE_INOTIFY 1555#if EV_USE_INOTIFY
1216 infy_fork (EV_A); 1556 infy_fork (EV_A);
1217#endif 1557#endif
1218 1558
1219 if (ev_is_active (&pipeev)) 1559 if (ev_is_active (&pipe_w))
1220 { 1560 {
1221 /* this "locks" the handlers against writing to the pipe */ 1561 /* this "locks" the handlers against writing to the pipe */
1562 /* while we modify the fd vars */
1563 gotsig = 1;
1564#if EV_ASYNC_ENABLE
1222 gotsig = gotasync = 1; 1565 gotasync = 1;
1566#endif
1223 1567
1224 ev_ref (EV_A); 1568 ev_ref (EV_A);
1225 ev_io_stop (EV_A_ &pipeev); 1569 ev_io_stop (EV_A_ &pipe_w);
1570
1571#if EV_USE_EVENTFD
1572 if (evfd >= 0)
1573 close (evfd);
1574#endif
1575
1576 if (evpipe [0] >= 0)
1577 {
1226 close (evpipe [0]); 1578 close (evpipe [0]);
1227 close (evpipe [1]); 1579 close (evpipe [1]);
1580 }
1228 1581
1229 evpipe_init (EV_A); 1582 evpipe_init (EV_A);
1230 /* now iterate over everything, in case we missed something */ 1583 /* now iterate over everything, in case we missed something */
1231 pipecb (EV_A_ &pipeev, EV_READ); 1584 pipecb (EV_A_ &pipe_w, EV_READ);
1232 } 1585 }
1233 1586
1234 postfork = 0; 1587 postfork = 0;
1235} 1588}
1236 1589
1237#if EV_MULTIPLICITY 1590#if EV_MULTIPLICITY
1591
1238struct ev_loop * 1592struct ev_loop *
1239ev_loop_new (unsigned int flags) 1593ev_loop_new (unsigned int flags)
1240{ 1594{
1241 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1595 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1242 1596
… …
1261ev_loop_fork (EV_P) 1615ev_loop_fork (EV_P)
1262{ 1616{
1263 postfork = 1; /* must be in line with ev_default_fork */ 1617 postfork = 1; /* must be in line with ev_default_fork */
1264} 1618}
1265 1619
1620#if EV_VERIFY
1621static void noinline
1622verify_watcher (EV_P_ W w)
1623{
1624 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1625
1626 if (w->pending)
1627 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1628}
1629
1630static void noinline
1631verify_heap (EV_P_ ANHE *heap, int N)
1632{
1633 int i;
1634
1635 for (i = HEAP0; i < N + HEAP0; ++i)
1636 {
1637 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1638 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1639 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1640
1641 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1642 }
1643}
1644
1645static void noinline
1646array_verify (EV_P_ W *ws, int cnt)
1647{
1648 while (cnt--)
1649 {
1650 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1651 verify_watcher (EV_A_ ws [cnt]);
1652 }
1653}
1654#endif
1655
1656void
1657ev_loop_verify (EV_P)
1658{
1659#if EV_VERIFY
1660 int i;
1661 WL w;
1662
1663 assert (activecnt >= -1);
1664
1665 assert (fdchangemax >= fdchangecnt);
1666 for (i = 0; i < fdchangecnt; ++i)
1667 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1668
1669 assert (anfdmax >= 0);
1670 for (i = 0; i < anfdmax; ++i)
1671 for (w = anfds [i].head; w; w = w->next)
1672 {
1673 verify_watcher (EV_A_ (W)w);
1674 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1675 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1676 }
1677
1678 assert (timermax >= timercnt);
1679 verify_heap (EV_A_ timers, timercnt);
1680
1681#if EV_PERIODIC_ENABLE
1682 assert (periodicmax >= periodiccnt);
1683 verify_heap (EV_A_ periodics, periodiccnt);
1684#endif
1685
1686 for (i = NUMPRI; i--; )
1687 {
1688 assert (pendingmax [i] >= pendingcnt [i]);
1689#if EV_IDLE_ENABLE
1690 assert (idleall >= 0);
1691 assert (idlemax [i] >= idlecnt [i]);
1692 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1693#endif
1694 }
1695
1696#if EV_FORK_ENABLE
1697 assert (forkmax >= forkcnt);
1698 array_verify (EV_A_ (W *)forks, forkcnt);
1699#endif
1700
1701#if EV_ASYNC_ENABLE
1702 assert (asyncmax >= asynccnt);
1703 array_verify (EV_A_ (W *)asyncs, asynccnt);
1704#endif
1705
1706 assert (preparemax >= preparecnt);
1707 array_verify (EV_A_ (W *)prepares, preparecnt);
1708
1709 assert (checkmax >= checkcnt);
1710 array_verify (EV_A_ (W *)checks, checkcnt);
1711
1712# if 0
1713 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1714 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1266#endif 1715# endif
1716#endif
1717}
1718
1719#endif /* multiplicity */
1267 1720
1268#if EV_MULTIPLICITY 1721#if EV_MULTIPLICITY
1269struct ev_loop * 1722struct ev_loop *
1270ev_default_loop_init (unsigned int flags) 1723ev_default_loop_init (unsigned int flags)
1271#else 1724#else
… …
1304{ 1757{
1305#if EV_MULTIPLICITY 1758#if EV_MULTIPLICITY
1306 struct ev_loop *loop = ev_default_loop_ptr; 1759 struct ev_loop *loop = ev_default_loop_ptr;
1307#endif 1760#endif
1308 1761
1762 ev_default_loop_ptr = 0;
1763
1309#ifndef _WIN32 1764#ifndef _WIN32
1310 ev_ref (EV_A); /* child watcher */ 1765 ev_ref (EV_A); /* child watcher */
1311 ev_signal_stop (EV_A_ &childev); 1766 ev_signal_stop (EV_A_ &childev);
1312#endif 1767#endif
1313 1768
… …
1319{ 1774{
1320#if EV_MULTIPLICITY 1775#if EV_MULTIPLICITY
1321 struct ev_loop *loop = ev_default_loop_ptr; 1776 struct ev_loop *loop = ev_default_loop_ptr;
1322#endif 1777#endif
1323 1778
1324 if (backend)
1325 postfork = 1; /* must be in line with ev_loop_fork */ 1779 postfork = 1; /* must be in line with ev_loop_fork */
1326} 1780}
1327 1781
1328/*****************************************************************************/ 1782/*****************************************************************************/
1329 1783
1330void 1784void
1331ev_invoke (EV_P_ void *w, int revents) 1785ev_invoke (EV_P_ void *w, int revents)
1332{ 1786{
1333 EV_CB_INVOKE ((W)w, revents); 1787 EV_CB_INVOKE ((W)w, revents);
1334} 1788}
1335 1789
1336void inline_speed 1790inline_speed void
1337call_pending (EV_P) 1791call_pending (EV_P)
1338{ 1792{
1339 int pri; 1793 int pri;
1340 1794
1341 for (pri = NUMPRI; pri--; ) 1795 for (pri = NUMPRI; pri--; )
1342 while (pendingcnt [pri]) 1796 while (pendingcnt [pri])
1343 { 1797 {
1344 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1798 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1345 1799
1346 if (expect_true (p->w))
1347 {
1348 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1800 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1801 /* ^ this is no longer true, as pending_w could be here */
1349 1802
1350 p->w->pending = 0; 1803 p->w->pending = 0;
1351 EV_CB_INVOKE (p->w, p->events); 1804 EV_CB_INVOKE (p->w, p->events);
1352 } 1805 EV_FREQUENT_CHECK;
1353 } 1806 }
1354} 1807}
1355 1808
1356void inline_size
1357timers_reify (EV_P)
1358{
1359 while (timercnt && ((WT)timers [0])->at <= mn_now)
1360 {
1361 ev_timer *w = (ev_timer *)timers [0];
1362
1363 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1364
1365 /* first reschedule or stop timer */
1366 if (w->repeat)
1367 {
1368 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1369
1370 ((WT)w)->at += w->repeat;
1371 if (((WT)w)->at < mn_now)
1372 ((WT)w)->at = mn_now;
1373
1374 downheap (timers, timercnt, 0);
1375 }
1376 else
1377 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1378
1379 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1380 }
1381}
1382
1383#if EV_PERIODIC_ENABLE
1384void inline_size
1385periodics_reify (EV_P)
1386{
1387 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1388 {
1389 ev_periodic *w = (ev_periodic *)periodics [0];
1390
1391 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1392
1393 /* first reschedule or stop timer */
1394 if (w->reschedule_cb)
1395 {
1396 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1397 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1398 downheap (periodics, periodiccnt, 0);
1399 }
1400 else if (w->interval)
1401 {
1402 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1403 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1404 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1405 downheap (periodics, periodiccnt, 0);
1406 }
1407 else
1408 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1409
1410 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1411 }
1412}
1413
1414static void noinline
1415periodics_reschedule (EV_P)
1416{
1417 int i;
1418
1419 /* adjust periodics after time jump */
1420 for (i = 0; i < periodiccnt; ++i)
1421 {
1422 ev_periodic *w = (ev_periodic *)periodics [i];
1423
1424 if (w->reschedule_cb)
1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1426 else if (w->interval)
1427 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1428 }
1429
1430 /* now rebuild the heap */
1431 for (i = periodiccnt >> 1; i--; )
1432 downheap (periodics, periodiccnt, i);
1433}
1434#endif
1435
1436#if EV_IDLE_ENABLE 1809#if EV_IDLE_ENABLE
1437void inline_size 1810/* make idle watchers pending. this handles the "call-idle */
1811/* only when higher priorities are idle" logic */
1812inline_size void
1438idle_reify (EV_P) 1813idle_reify (EV_P)
1439{ 1814{
1440 if (expect_false (idleall)) 1815 if (expect_false (idleall))
1441 { 1816 {
1442 int pri; 1817 int pri;
… …
1454 } 1829 }
1455 } 1830 }
1456} 1831}
1457#endif 1832#endif
1458 1833
1459void inline_speed 1834/* make timers pending */
1835inline_size void
1836timers_reify (EV_P)
1837{
1838 EV_FREQUENT_CHECK;
1839
1840 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1841 {
1842 do
1843 {
1844 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1845
1846 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1847
1848 /* first reschedule or stop timer */
1849 if (w->repeat)
1850 {
1851 ev_at (w) += w->repeat;
1852 if (ev_at (w) < mn_now)
1853 ev_at (w) = mn_now;
1854
1855 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1856
1857 ANHE_at_cache (timers [HEAP0]);
1858 downheap (timers, timercnt, HEAP0);
1859 }
1860 else
1861 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1862
1863 EV_FREQUENT_CHECK;
1864 feed_reverse (EV_A_ (W)w);
1865 }
1866 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1867
1868 feed_reverse_done (EV_A_ EV_TIMEOUT);
1869 }
1870}
1871
1872#if EV_PERIODIC_ENABLE
1873/* make periodics pending */
1874inline_size void
1875periodics_reify (EV_P)
1876{
1877 EV_FREQUENT_CHECK;
1878
1879 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1880 {
1881 int feed_count = 0;
1882
1883 do
1884 {
1885 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1886
1887 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1888
1889 /* first reschedule or stop timer */
1890 if (w->reschedule_cb)
1891 {
1892 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1893
1894 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1895
1896 ANHE_at_cache (periodics [HEAP0]);
1897 downheap (periodics, periodiccnt, HEAP0);
1898 }
1899 else if (w->interval)
1900 {
1901 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1902 /* if next trigger time is not sufficiently in the future, put it there */
1903 /* this might happen because of floating point inexactness */
1904 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1905 {
1906 ev_at (w) += w->interval;
1907
1908 /* if interval is unreasonably low we might still have a time in the past */
1909 /* so correct this. this will make the periodic very inexact, but the user */
1910 /* has effectively asked to get triggered more often than possible */
1911 if (ev_at (w) < ev_rt_now)
1912 ev_at (w) = ev_rt_now;
1913 }
1914
1915 ANHE_at_cache (periodics [HEAP0]);
1916 downheap (periodics, periodiccnt, HEAP0);
1917 }
1918 else
1919 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1920
1921 EV_FREQUENT_CHECK;
1922 feed_reverse (EV_A_ (W)w);
1923 }
1924 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1925
1926 feed_reverse_done (EV_A_ EV_PERIODIC);
1927 }
1928}
1929
1930/* simply recalculate all periodics */
1931/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1932static void noinline
1933periodics_reschedule (EV_P)
1934{
1935 int i;
1936
1937 /* adjust periodics after time jump */
1938 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1939 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1941
1942 if (w->reschedule_cb)
1943 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1944 else if (w->interval)
1945 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1946
1947 ANHE_at_cache (periodics [i]);
1948 }
1949
1950 reheap (periodics, periodiccnt);
1951}
1952#endif
1953
1954/* adjust all timers by a given offset */
1955static void noinline
1956timers_reschedule (EV_P_ ev_tstamp adjust)
1957{
1958 int i;
1959
1960 for (i = 0; i < timercnt; ++i)
1961 {
1962 ANHE *he = timers + i + HEAP0;
1963 ANHE_w (*he)->at += adjust;
1964 ANHE_at_cache (*he);
1965 }
1966}
1967
1968/* fetch new monotonic and realtime times from the kernel */
1969/* also detetc if there was a timejump, and act accordingly */
1970inline_speed void
1460time_update (EV_P_ ev_tstamp max_block) 1971time_update (EV_P_ ev_tstamp max_block)
1461{ 1972{
1462 int i;
1463
1464#if EV_USE_MONOTONIC 1973#if EV_USE_MONOTONIC
1465 if (expect_true (have_monotonic)) 1974 if (expect_true (have_monotonic))
1466 { 1975 {
1976 int i;
1467 ev_tstamp odiff = rtmn_diff; 1977 ev_tstamp odiff = rtmn_diff;
1468 1978
1469 mn_now = get_clock (); 1979 mn_now = get_clock ();
1470 1980
1471 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1981 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1489 */ 1999 */
1490 for (i = 4; --i; ) 2000 for (i = 4; --i; )
1491 { 2001 {
1492 rtmn_diff = ev_rt_now - mn_now; 2002 rtmn_diff = ev_rt_now - mn_now;
1493 2003
1494 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2004 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1495 return; /* all is well */ 2005 return; /* all is well */
1496 2006
1497 ev_rt_now = ev_time (); 2007 ev_rt_now = ev_time ();
1498 mn_now = get_clock (); 2008 mn_now = get_clock ();
1499 now_floor = mn_now; 2009 now_floor = mn_now;
1500 } 2010 }
1501 2011
2012 /* no timer adjustment, as the monotonic clock doesn't jump */
2013 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502# if EV_PERIODIC_ENABLE 2014# if EV_PERIODIC_ENABLE
1503 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1504# endif 2016# endif
1505 /* no timer adjustment, as the monotonic clock doesn't jump */
1506 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1507 } 2017 }
1508 else 2018 else
1509#endif 2019#endif
1510 { 2020 {
1511 ev_rt_now = ev_time (); 2021 ev_rt_now = ev_time ();
1512 2022
1513 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2023 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1514 { 2024 {
2025 /* adjust timers. this is easy, as the offset is the same for all of them */
2026 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1515#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
1516 periodics_reschedule (EV_A); 2028 periodics_reschedule (EV_A);
1517#endif 2029#endif
1518 /* adjust timers. this is easy, as the offset is the same for all of them */
1519 for (i = 0; i < timercnt; ++i)
1520 ((WT)timers [i])->at += ev_rt_now - mn_now;
1521 } 2030 }
1522 2031
1523 mn_now = ev_rt_now; 2032 mn_now = ev_rt_now;
1524 } 2033 }
1525} 2034}
1526 2035
1527void 2036void
1528ev_ref (EV_P)
1529{
1530 ++activecnt;
1531}
1532
1533void
1534ev_unref (EV_P)
1535{
1536 --activecnt;
1537}
1538
1539static int loop_done;
1540
1541void
1542ev_loop (EV_P_ int flags) 2037ev_loop (EV_P_ int flags)
1543{ 2038{
1544 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2039 ++loop_depth;
1545 ? EVUNLOOP_ONE 2040
1546 : EVUNLOOP_CANCEL; 2041 loop_done = EVUNLOOP_CANCEL;
1547 2042
1548 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2043 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1549 2044
1550 do 2045 do
1551 { 2046 {
2047#if EV_VERIFY >= 2
2048 ev_loop_verify (EV_A);
2049#endif
2050
1552#ifndef _WIN32 2051#ifndef _WIN32
1553 if (expect_false (curpid)) /* penalise the forking check even more */ 2052 if (expect_false (curpid)) /* penalise the forking check even more */
1554 if (expect_false (getpid () != curpid)) 2053 if (expect_false (getpid () != curpid))
1555 { 2054 {
1556 curpid = getpid (); 2055 curpid = getpid ();
… …
1573 { 2072 {
1574 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1575 call_pending (EV_A); 2074 call_pending (EV_A);
1576 } 2075 }
1577 2076
1578 if (expect_false (!activecnt))
1579 break;
1580
1581 /* we might have forked, so reify kernel state if necessary */ 2077 /* we might have forked, so reify kernel state if necessary */
1582 if (expect_false (postfork)) 2078 if (expect_false (postfork))
1583 loop_fork (EV_A); 2079 loop_fork (EV_A);
1584 2080
1585 /* update fd-related kernel structures */ 2081 /* update fd-related kernel structures */
… …
1590 ev_tstamp waittime = 0.; 2086 ev_tstamp waittime = 0.;
1591 ev_tstamp sleeptime = 0.; 2087 ev_tstamp sleeptime = 0.;
1592 2088
1593 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2089 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1594 { 2090 {
2091 /* remember old timestamp for io_blocktime calculation */
2092 ev_tstamp prev_mn_now = mn_now;
2093
1595 /* update time to cancel out callback processing overhead */ 2094 /* update time to cancel out callback processing overhead */
1596 time_update (EV_A_ 1e100); 2095 time_update (EV_A_ 1e100);
1597 2096
1598 waittime = MAX_BLOCKTIME; 2097 waittime = MAX_BLOCKTIME;
1599 2098
1600 if (timercnt) 2099 if (timercnt)
1601 { 2100 {
1602 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1603 if (waittime > to) waittime = to; 2102 if (waittime > to) waittime = to;
1604 } 2103 }
1605 2104
1606#if EV_PERIODIC_ENABLE 2105#if EV_PERIODIC_ENABLE
1607 if (periodiccnt) 2106 if (periodiccnt)
1608 { 2107 {
1609 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1610 if (waittime > to) waittime = to; 2109 if (waittime > to) waittime = to;
1611 } 2110 }
1612#endif 2111#endif
1613 2112
2113 /* don't let timeouts decrease the waittime below timeout_blocktime */
1614 if (expect_false (waittime < timeout_blocktime)) 2114 if (expect_false (waittime < timeout_blocktime))
1615 waittime = timeout_blocktime; 2115 waittime = timeout_blocktime;
1616 2116
1617 sleeptime = waittime - backend_fudge; 2117 /* extra check because io_blocktime is commonly 0 */
1618
1619 if (expect_true (sleeptime > io_blocktime)) 2118 if (expect_false (io_blocktime))
1620 sleeptime = io_blocktime;
1621
1622 if (sleeptime)
1623 { 2119 {
2120 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2121
2122 if (sleeptime > waittime - backend_fudge)
2123 sleeptime = waittime - backend_fudge;
2124
2125 if (expect_true (sleeptime > 0.))
2126 {
1624 ev_sleep (sleeptime); 2127 ev_sleep (sleeptime);
1625 waittime -= sleeptime; 2128 waittime -= sleeptime;
2129 }
1626 } 2130 }
1627 } 2131 }
1628 2132
1629 ++loop_count; 2133 ++loop_count;
1630 backend_poll (EV_A_ waittime); 2134 backend_poll (EV_A_ waittime);
… …
1647 /* queue check watchers, to be executed first */ 2151 /* queue check watchers, to be executed first */
1648 if (expect_false (checkcnt)) 2152 if (expect_false (checkcnt))
1649 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2153 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1650 2154
1651 call_pending (EV_A); 2155 call_pending (EV_A);
1652
1653 } 2156 }
1654 while (expect_true (activecnt && !loop_done)); 2157 while (expect_true (
2158 activecnt
2159 && !loop_done
2160 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2161 ));
1655 2162
1656 if (loop_done == EVUNLOOP_ONE) 2163 if (loop_done == EVUNLOOP_ONE)
1657 loop_done = EVUNLOOP_CANCEL; 2164 loop_done = EVUNLOOP_CANCEL;
2165
2166 --loop_depth;
1658} 2167}
1659 2168
1660void 2169void
1661ev_unloop (EV_P_ int how) 2170ev_unloop (EV_P_ int how)
1662{ 2171{
1663 loop_done = how; 2172 loop_done = how;
1664} 2173}
1665 2174
2175void
2176ev_ref (EV_P)
2177{
2178 ++activecnt;
2179}
2180
2181void
2182ev_unref (EV_P)
2183{
2184 --activecnt;
2185}
2186
2187void
2188ev_now_update (EV_P)
2189{
2190 time_update (EV_A_ 1e100);
2191}
2192
2193void
2194ev_suspend (EV_P)
2195{
2196 ev_now_update (EV_A);
2197}
2198
2199void
2200ev_resume (EV_P)
2201{
2202 ev_tstamp mn_prev = mn_now;
2203
2204 ev_now_update (EV_A);
2205 timers_reschedule (EV_A_ mn_now - mn_prev);
2206#if EV_PERIODIC_ENABLE
2207 /* TODO: really do this? */
2208 periodics_reschedule (EV_A);
2209#endif
2210}
2211
1666/*****************************************************************************/ 2212/*****************************************************************************/
2213/* singly-linked list management, used when the expected list length is short */
1667 2214
1668void inline_size 2215inline_size void
1669wlist_add (WL *head, WL elem) 2216wlist_add (WL *head, WL elem)
1670{ 2217{
1671 elem->next = *head; 2218 elem->next = *head;
1672 *head = elem; 2219 *head = elem;
1673} 2220}
1674 2221
1675void inline_size 2222inline_size void
1676wlist_del (WL *head, WL elem) 2223wlist_del (WL *head, WL elem)
1677{ 2224{
1678 while (*head) 2225 while (*head)
1679 { 2226 {
1680 if (*head == elem) 2227 if (*head == elem)
… …
1685 2232
1686 head = &(*head)->next; 2233 head = &(*head)->next;
1687 } 2234 }
1688} 2235}
1689 2236
1690void inline_speed 2237/* internal, faster, version of ev_clear_pending */
2238inline_speed void
1691clear_pending (EV_P_ W w) 2239clear_pending (EV_P_ W w)
1692{ 2240{
1693 if (w->pending) 2241 if (w->pending)
1694 { 2242 {
1695 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2243 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1696 w->pending = 0; 2244 w->pending = 0;
1697 } 2245 }
1698} 2246}
1699 2247
1700int 2248int
… …
1704 int pending = w_->pending; 2252 int pending = w_->pending;
1705 2253
1706 if (expect_true (pending)) 2254 if (expect_true (pending))
1707 { 2255 {
1708 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2256 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2257 p->w = (W)&pending_w;
1709 w_->pending = 0; 2258 w_->pending = 0;
1710 p->w = 0;
1711 return p->events; 2259 return p->events;
1712 } 2260 }
1713 else 2261 else
1714 return 0; 2262 return 0;
1715} 2263}
1716 2264
1717void inline_size 2265inline_size void
1718pri_adjust (EV_P_ W w) 2266pri_adjust (EV_P_ W w)
1719{ 2267{
1720 int pri = w->priority; 2268 int pri = ev_priority (w);
1721 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2269 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1722 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2270 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1723 w->priority = pri; 2271 ev_set_priority (w, pri);
1724} 2272}
1725 2273
1726void inline_speed 2274inline_speed void
1727ev_start (EV_P_ W w, int active) 2275ev_start (EV_P_ W w, int active)
1728{ 2276{
1729 pri_adjust (EV_A_ w); 2277 pri_adjust (EV_A_ w);
1730 w->active = active; 2278 w->active = active;
1731 ev_ref (EV_A); 2279 ev_ref (EV_A);
1732} 2280}
1733 2281
1734void inline_size 2282inline_size void
1735ev_stop (EV_P_ W w) 2283ev_stop (EV_P_ W w)
1736{ 2284{
1737 ev_unref (EV_A); 2285 ev_unref (EV_A);
1738 w->active = 0; 2286 w->active = 0;
1739} 2287}
… …
1746 int fd = w->fd; 2294 int fd = w->fd;
1747 2295
1748 if (expect_false (ev_is_active (w))) 2296 if (expect_false (ev_is_active (w)))
1749 return; 2297 return;
1750 2298
1751 assert (("ev_io_start called with negative fd", fd >= 0)); 2299 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2300 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2301
2302 EV_FREQUENT_CHECK;
1752 2303
1753 ev_start (EV_A_ (W)w, 1); 2304 ev_start (EV_A_ (W)w, 1);
1754 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2305 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1755 wlist_add (&anfds[fd].head, (WL)w); 2306 wlist_add (&anfds[fd].head, (WL)w);
1756 2307
1757 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2308 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1758 w->events &= ~EV_IOFDSET; 2309 w->events &= ~EV__IOFDSET;
2310
2311 EV_FREQUENT_CHECK;
1759} 2312}
1760 2313
1761void noinline 2314void noinline
1762ev_io_stop (EV_P_ ev_io *w) 2315ev_io_stop (EV_P_ ev_io *w)
1763{ 2316{
1764 clear_pending (EV_A_ (W)w); 2317 clear_pending (EV_A_ (W)w);
1765 if (expect_false (!ev_is_active (w))) 2318 if (expect_false (!ev_is_active (w)))
1766 return; 2319 return;
1767 2320
1768 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2321 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2322
2323 EV_FREQUENT_CHECK;
1769 2324
1770 wlist_del (&anfds[w->fd].head, (WL)w); 2325 wlist_del (&anfds[w->fd].head, (WL)w);
1771 ev_stop (EV_A_ (W)w); 2326 ev_stop (EV_A_ (W)w);
1772 2327
1773 fd_change (EV_A_ w->fd, 1); 2328 fd_change (EV_A_ w->fd, 1);
2329
2330 EV_FREQUENT_CHECK;
1774} 2331}
1775 2332
1776void noinline 2333void noinline
1777ev_timer_start (EV_P_ ev_timer *w) 2334ev_timer_start (EV_P_ ev_timer *w)
1778{ 2335{
1779 if (expect_false (ev_is_active (w))) 2336 if (expect_false (ev_is_active (w)))
1780 return; 2337 return;
1781 2338
1782 ((WT)w)->at += mn_now; 2339 ev_at (w) += mn_now;
1783 2340
1784 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2341 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1785 2342
2343 EV_FREQUENT_CHECK;
2344
2345 ++timercnt;
1786 ev_start (EV_A_ (W)w, ++timercnt); 2346 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1787 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2347 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1788 timers [timercnt - 1] = (WT)w; 2348 ANHE_w (timers [ev_active (w)]) = (WT)w;
1789 upheap (timers, timercnt - 1); 2349 ANHE_at_cache (timers [ev_active (w)]);
2350 upheap (timers, ev_active (w));
1790 2351
2352 EV_FREQUENT_CHECK;
2353
1791 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2354 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1792} 2355}
1793 2356
1794void noinline 2357void noinline
1795ev_timer_stop (EV_P_ ev_timer *w) 2358ev_timer_stop (EV_P_ ev_timer *w)
1796{ 2359{
1797 clear_pending (EV_A_ (W)w); 2360 clear_pending (EV_A_ (W)w);
1798 if (expect_false (!ev_is_active (w))) 2361 if (expect_false (!ev_is_active (w)))
1799 return; 2362 return;
1800 2363
1801 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2364 EV_FREQUENT_CHECK;
1802 2365
1803 { 2366 {
1804 int active = ((W)w)->active; 2367 int active = ev_active (w);
1805 2368
2369 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2370
2371 --timercnt;
2372
1806 if (expect_true (--active < --timercnt)) 2373 if (expect_true (active < timercnt + HEAP0))
1807 { 2374 {
1808 timers [active] = timers [timercnt]; 2375 timers [active] = timers [timercnt + HEAP0];
1809 adjustheap (timers, timercnt, active); 2376 adjustheap (timers, timercnt, active);
1810 } 2377 }
1811 } 2378 }
1812 2379
1813 ((WT)w)->at -= mn_now; 2380 EV_FREQUENT_CHECK;
2381
2382 ev_at (w) -= mn_now;
1814 2383
1815 ev_stop (EV_A_ (W)w); 2384 ev_stop (EV_A_ (W)w);
1816} 2385}
1817 2386
1818void noinline 2387void noinline
1819ev_timer_again (EV_P_ ev_timer *w) 2388ev_timer_again (EV_P_ ev_timer *w)
1820{ 2389{
2390 EV_FREQUENT_CHECK;
2391
1821 if (ev_is_active (w)) 2392 if (ev_is_active (w))
1822 { 2393 {
1823 if (w->repeat) 2394 if (w->repeat)
1824 { 2395 {
1825 ((WT)w)->at = mn_now + w->repeat; 2396 ev_at (w) = mn_now + w->repeat;
2397 ANHE_at_cache (timers [ev_active (w)]);
1826 adjustheap (timers, timercnt, ((W)w)->active - 1); 2398 adjustheap (timers, timercnt, ev_active (w));
1827 } 2399 }
1828 else 2400 else
1829 ev_timer_stop (EV_A_ w); 2401 ev_timer_stop (EV_A_ w);
1830 } 2402 }
1831 else if (w->repeat) 2403 else if (w->repeat)
1832 { 2404 {
1833 w->at = w->repeat; 2405 ev_at (w) = w->repeat;
1834 ev_timer_start (EV_A_ w); 2406 ev_timer_start (EV_A_ w);
1835 } 2407 }
2408
2409 EV_FREQUENT_CHECK;
1836} 2410}
1837 2411
1838#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1839void noinline 2413void noinline
1840ev_periodic_start (EV_P_ ev_periodic *w) 2414ev_periodic_start (EV_P_ ev_periodic *w)
1841{ 2415{
1842 if (expect_false (ev_is_active (w))) 2416 if (expect_false (ev_is_active (w)))
1843 return; 2417 return;
1844 2418
1845 if (w->reschedule_cb) 2419 if (w->reschedule_cb)
1846 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2420 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1847 else if (w->interval) 2421 else if (w->interval)
1848 { 2422 {
1849 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2423 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1850 /* this formula differs from the one in periodic_reify because we do not always round up */ 2424 /* this formula differs from the one in periodic_reify because we do not always round up */
1851 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2425 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1852 } 2426 }
1853 else 2427 else
1854 ((WT)w)->at = w->offset; 2428 ev_at (w) = w->offset;
1855 2429
2430 EV_FREQUENT_CHECK;
2431
2432 ++periodiccnt;
1856 ev_start (EV_A_ (W)w, ++periodiccnt); 2433 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1857 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2434 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1858 periodics [periodiccnt - 1] = (WT)w; 2435 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1859 upheap (periodics, periodiccnt - 1); 2436 ANHE_at_cache (periodics [ev_active (w)]);
2437 upheap (periodics, ev_active (w));
1860 2438
2439 EV_FREQUENT_CHECK;
2440
1861 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2441 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1862} 2442}
1863 2443
1864void noinline 2444void noinline
1865ev_periodic_stop (EV_P_ ev_periodic *w) 2445ev_periodic_stop (EV_P_ ev_periodic *w)
1866{ 2446{
1867 clear_pending (EV_A_ (W)w); 2447 clear_pending (EV_A_ (W)w);
1868 if (expect_false (!ev_is_active (w))) 2448 if (expect_false (!ev_is_active (w)))
1869 return; 2449 return;
1870 2450
1871 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2451 EV_FREQUENT_CHECK;
1872 2452
1873 { 2453 {
1874 int active = ((W)w)->active; 2454 int active = ev_active (w);
1875 2455
2456 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2457
2458 --periodiccnt;
2459
1876 if (expect_true (--active < --periodiccnt)) 2460 if (expect_true (active < periodiccnt + HEAP0))
1877 { 2461 {
1878 periodics [active] = periodics [periodiccnt]; 2462 periodics [active] = periodics [periodiccnt + HEAP0];
1879 adjustheap (periodics, periodiccnt, active); 2463 adjustheap (periodics, periodiccnt, active);
1880 } 2464 }
1881 } 2465 }
1882 2466
2467 EV_FREQUENT_CHECK;
2468
1883 ev_stop (EV_A_ (W)w); 2469 ev_stop (EV_A_ (W)w);
1884} 2470}
1885 2471
1886void noinline 2472void noinline
1887ev_periodic_again (EV_P_ ev_periodic *w) 2473ev_periodic_again (EV_P_ ev_periodic *w)
… …
1898 2484
1899void noinline 2485void noinline
1900ev_signal_start (EV_P_ ev_signal *w) 2486ev_signal_start (EV_P_ ev_signal *w)
1901{ 2487{
1902#if EV_MULTIPLICITY 2488#if EV_MULTIPLICITY
1903 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2489 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1904#endif 2490#endif
1905 if (expect_false (ev_is_active (w))) 2491 if (expect_false (ev_is_active (w)))
1906 return; 2492 return;
1907 2493
1908 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2494 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
1909 2495
1910 evpipe_init (EV_A); 2496 evpipe_init (EV_A);
2497
2498 EV_FREQUENT_CHECK;
1911 2499
1912 { 2500 {
1913#ifndef _WIN32 2501#ifndef _WIN32
1914 sigset_t full, prev; 2502 sigset_t full, prev;
1915 sigfillset (&full); 2503 sigfillset (&full);
1916 sigprocmask (SIG_SETMASK, &full, &prev); 2504 sigprocmask (SIG_SETMASK, &full, &prev);
1917#endif 2505#endif
1918 2506
1919 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2507 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1920 2508
1921#ifndef _WIN32 2509#ifndef _WIN32
1922 sigprocmask (SIG_SETMASK, &prev, 0); 2510 sigprocmask (SIG_SETMASK, &prev, 0);
1923#endif 2511#endif
1924 } 2512 }
… …
1927 wlist_add (&signals [w->signum - 1].head, (WL)w); 2515 wlist_add (&signals [w->signum - 1].head, (WL)w);
1928 2516
1929 if (!((WL)w)->next) 2517 if (!((WL)w)->next)
1930 { 2518 {
1931#if _WIN32 2519#if _WIN32
1932 signal (w->signum, sighandler); 2520 signal (w->signum, ev_sighandler);
1933#else 2521#else
1934 struct sigaction sa; 2522 struct sigaction sa;
1935 sa.sa_handler = sighandler; 2523 sa.sa_handler = ev_sighandler;
1936 sigfillset (&sa.sa_mask); 2524 sigfillset (&sa.sa_mask);
1937 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1938 sigaction (w->signum, &sa, 0); 2526 sigaction (w->signum, &sa, 0);
1939#endif 2527#endif
1940 } 2528 }
2529
2530 EV_FREQUENT_CHECK;
1941} 2531}
1942 2532
1943void noinline 2533void noinline
1944ev_signal_stop (EV_P_ ev_signal *w) 2534ev_signal_stop (EV_P_ ev_signal *w)
1945{ 2535{
1946 clear_pending (EV_A_ (W)w); 2536 clear_pending (EV_A_ (W)w);
1947 if (expect_false (!ev_is_active (w))) 2537 if (expect_false (!ev_is_active (w)))
1948 return; 2538 return;
1949 2539
2540 EV_FREQUENT_CHECK;
2541
1950 wlist_del (&signals [w->signum - 1].head, (WL)w); 2542 wlist_del (&signals [w->signum - 1].head, (WL)w);
1951 ev_stop (EV_A_ (W)w); 2543 ev_stop (EV_A_ (W)w);
1952 2544
1953 if (!signals [w->signum - 1].head) 2545 if (!signals [w->signum - 1].head)
1954 signal (w->signum, SIG_DFL); 2546 signal (w->signum, SIG_DFL);
2547
2548 EV_FREQUENT_CHECK;
1955} 2549}
1956 2550
1957void 2551void
1958ev_child_start (EV_P_ ev_child *w) 2552ev_child_start (EV_P_ ev_child *w)
1959{ 2553{
1960#if EV_MULTIPLICITY 2554#if EV_MULTIPLICITY
1961 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1962#endif 2556#endif
1963 if (expect_false (ev_is_active (w))) 2557 if (expect_false (ev_is_active (w)))
1964 return; 2558 return;
1965 2559
2560 EV_FREQUENT_CHECK;
2561
1966 ev_start (EV_A_ (W)w, 1); 2562 ev_start (EV_A_ (W)w, 1);
1967 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2563 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2564
2565 EV_FREQUENT_CHECK;
1968} 2566}
1969 2567
1970void 2568void
1971ev_child_stop (EV_P_ ev_child *w) 2569ev_child_stop (EV_P_ ev_child *w)
1972{ 2570{
1973 clear_pending (EV_A_ (W)w); 2571 clear_pending (EV_A_ (W)w);
1974 if (expect_false (!ev_is_active (w))) 2572 if (expect_false (!ev_is_active (w)))
1975 return; 2573 return;
1976 2574
2575 EV_FREQUENT_CHECK;
2576
1977 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2577 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1978 ev_stop (EV_A_ (W)w); 2578 ev_stop (EV_A_ (W)w);
2579
2580 EV_FREQUENT_CHECK;
1979} 2581}
1980 2582
1981#if EV_STAT_ENABLE 2583#if EV_STAT_ENABLE
1982 2584
1983# ifdef _WIN32 2585# ifdef _WIN32
1984# undef lstat 2586# undef lstat
1985# define lstat(a,b) _stati64 (a,b) 2587# define lstat(a,b) _stati64 (a,b)
1986# endif 2588# endif
1987 2589
1988#define DEF_STAT_INTERVAL 5.0074891 2590#define DEF_STAT_INTERVAL 5.0074891
2591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1989#define MIN_STAT_INTERVAL 0.1074891 2592#define MIN_STAT_INTERVAL 0.1074891
1990 2593
1991static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1992 2595
1993#if EV_USE_INOTIFY 2596#if EV_USE_INOTIFY
1994# define EV_INOTIFY_BUFSIZE 8192 2597# define EV_INOTIFY_BUFSIZE 8192
… …
1998{ 2601{
1999 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); 2602 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);
2000 2603
2001 if (w->wd < 0) 2604 if (w->wd < 0)
2002 { 2605 {
2606 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2003 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2607 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2004 2608
2005 /* monitor some parent directory for speedup hints */ 2609 /* monitor some parent directory for speedup hints */
2610 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2611 /* but an efficiency issue only */
2006 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2007 { 2613 {
2008 char path [4096]; 2614 char path [4096];
2009 strcpy (path, w->path); 2615 strcpy (path, w->path);
2010 2616
… …
2013 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2619 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2014 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2620 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2015 2621
2016 char *pend = strrchr (path, '/'); 2622 char *pend = strrchr (path, '/');
2017 2623
2018 if (!pend) 2624 if (!pend || pend == path)
2019 break; /* whoops, no '/', complain to your admin */ 2625 break;
2020 2626
2021 *pend = 0; 2627 *pend = 0;
2022 w->wd = inotify_add_watch (fs_fd, path, mask); 2628 w->wd = inotify_add_watch (fs_fd, path, mask);
2023 } 2629 }
2024 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2025 } 2631 }
2026 } 2632 }
2027 else
2028 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2029 2633
2030 if (w->wd >= 0) 2634 if (w->wd >= 0)
2635 {
2031 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2636 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2637
2638 /* now local changes will be tracked by inotify, but remote changes won't */
2639 /* unless the filesystem it known to be local, we therefore still poll */
2640 /* also do poll on <2.6.25, but with normal frequency */
2641 struct statfs sfs;
2642
2643 if (fs_2625 && !statfs (w->path, &sfs))
2644 if (sfs.f_type == 0x1373 /* devfs */
2645 || sfs.f_type == 0xEF53 /* ext2/3 */
2646 || sfs.f_type == 0x3153464a /* jfs */
2647 || sfs.f_type == 0x52654973 /* reiser3 */
2648 || sfs.f_type == 0x01021994 /* tempfs */
2649 || sfs.f_type == 0x58465342 /* xfs */)
2650 return;
2651
2652 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653 ev_timer_again (EV_A_ &w->timer);
2654 }
2032} 2655}
2033 2656
2034static void noinline 2657static void noinline
2035infy_del (EV_P_ ev_stat *w) 2658infy_del (EV_P_ ev_stat *w)
2036{ 2659{
… …
2050 2673
2051static void noinline 2674static void noinline
2052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2675infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2053{ 2676{
2054 if (slot < 0) 2677 if (slot < 0)
2055 /* overflow, need to check for all hahs slots */ 2678 /* overflow, need to check for all hash slots */
2056 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2679 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2057 infy_wd (EV_A_ slot, wd, ev); 2680 infy_wd (EV_A_ slot, wd, ev);
2058 else 2681 else
2059 { 2682 {
2060 WL w_; 2683 WL w_;
… …
2066 2689
2067 if (w->wd == wd || wd == -1) 2690 if (w->wd == wd || wd == -1)
2068 { 2691 {
2069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2692 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2070 { 2693 {
2694 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2071 w->wd = -1; 2695 w->wd = -1;
2072 infy_add (EV_A_ w); /* re-add, no matter what */ 2696 infy_add (EV_A_ w); /* re-add, no matter what */
2073 } 2697 }
2074 2698
2075 stat_timer_cb (EV_A_ &w->timer, 0); 2699 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2088 2712
2089 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2713 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2090 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2714 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2091} 2715}
2092 2716
2093void inline_size 2717inline_size void
2718check_2625 (EV_P)
2719{
2720 /* kernels < 2.6.25 are borked
2721 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2722 */
2723 struct utsname buf;
2724 int major, minor, micro;
2725
2726 if (uname (&buf))
2727 return;
2728
2729 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2730 return;
2731
2732 if (major < 2
2733 || (major == 2 && minor < 6)
2734 || (major == 2 && minor == 6 && micro < 25))
2735 return;
2736
2737 fs_2625 = 1;
2738}
2739
2740inline_size void
2094infy_init (EV_P) 2741infy_init (EV_P)
2095{ 2742{
2096 if (fs_fd != -2) 2743 if (fs_fd != -2)
2097 return; 2744 return;
2745
2746 fs_fd = -1;
2747
2748 check_2625 (EV_A);
2098 2749
2099 fs_fd = inotify_init (); 2750 fs_fd = inotify_init ();
2100 2751
2101 if (fs_fd >= 0) 2752 if (fs_fd >= 0)
2102 { 2753 {
… …
2104 ev_set_priority (&fs_w, EV_MAXPRI); 2755 ev_set_priority (&fs_w, EV_MAXPRI);
2105 ev_io_start (EV_A_ &fs_w); 2756 ev_io_start (EV_A_ &fs_w);
2106 } 2757 }
2107} 2758}
2108 2759
2109void inline_size 2760inline_size void
2110infy_fork (EV_P) 2761infy_fork (EV_P)
2111{ 2762{
2112 int slot; 2763 int slot;
2113 2764
2114 if (fs_fd < 0) 2765 if (fs_fd < 0)
… …
2130 w->wd = -1; 2781 w->wd = -1;
2131 2782
2132 if (fs_fd >= 0) 2783 if (fs_fd >= 0)
2133 infy_add (EV_A_ w); /* re-add, no matter what */ 2784 infy_add (EV_A_ w); /* re-add, no matter what */
2134 else 2785 else
2135 ev_timer_start (EV_A_ &w->timer); 2786 ev_timer_again (EV_A_ &w->timer);
2136 } 2787 }
2137
2138 } 2788 }
2139} 2789}
2140 2790
2791#endif
2792
2793#ifdef _WIN32
2794# define EV_LSTAT(p,b) _stati64 (p, b)
2795#else
2796# define EV_LSTAT(p,b) lstat (p, b)
2141#endif 2797#endif
2142 2798
2143void 2799void
2144ev_stat_stat (EV_P_ ev_stat *w) 2800ev_stat_stat (EV_P_ ev_stat *w)
2145{ 2801{
… …
2172 || w->prev.st_atime != w->attr.st_atime 2828 || w->prev.st_atime != w->attr.st_atime
2173 || w->prev.st_mtime != w->attr.st_mtime 2829 || w->prev.st_mtime != w->attr.st_mtime
2174 || w->prev.st_ctime != w->attr.st_ctime 2830 || w->prev.st_ctime != w->attr.st_ctime
2175 ) { 2831 ) {
2176 #if EV_USE_INOTIFY 2832 #if EV_USE_INOTIFY
2833 if (fs_fd >= 0)
2834 {
2177 infy_del (EV_A_ w); 2835 infy_del (EV_A_ w);
2178 infy_add (EV_A_ w); 2836 infy_add (EV_A_ w);
2179 ev_stat_stat (EV_A_ w); /* avoid race... */ 2837 ev_stat_stat (EV_A_ w); /* avoid race... */
2838 }
2180 #endif 2839 #endif
2181 2840
2182 ev_feed_event (EV_A_ w, EV_STAT); 2841 ev_feed_event (EV_A_ w, EV_STAT);
2183 } 2842 }
2184} 2843}
… …
2187ev_stat_start (EV_P_ ev_stat *w) 2846ev_stat_start (EV_P_ ev_stat *w)
2188{ 2847{
2189 if (expect_false (ev_is_active (w))) 2848 if (expect_false (ev_is_active (w)))
2190 return; 2849 return;
2191 2850
2192 /* since we use memcmp, we need to clear any padding data etc. */
2193 memset (&w->prev, 0, sizeof (ev_statdata));
2194 memset (&w->attr, 0, sizeof (ev_statdata));
2195
2196 ev_stat_stat (EV_A_ w); 2851 ev_stat_stat (EV_A_ w);
2197 2852
2853 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2198 if (w->interval < MIN_STAT_INTERVAL) 2854 w->interval = MIN_STAT_INTERVAL;
2199 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2200 2855
2201 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2856 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2202 ev_set_priority (&w->timer, ev_priority (w)); 2857 ev_set_priority (&w->timer, ev_priority (w));
2203 2858
2204#if EV_USE_INOTIFY 2859#if EV_USE_INOTIFY
2205 infy_init (EV_A); 2860 infy_init (EV_A);
2206 2861
2207 if (fs_fd >= 0) 2862 if (fs_fd >= 0)
2208 infy_add (EV_A_ w); 2863 infy_add (EV_A_ w);
2209 else 2864 else
2210#endif 2865#endif
2211 ev_timer_start (EV_A_ &w->timer); 2866 ev_timer_again (EV_A_ &w->timer);
2212 2867
2213 ev_start (EV_A_ (W)w, 1); 2868 ev_start (EV_A_ (W)w, 1);
2869
2870 EV_FREQUENT_CHECK;
2214} 2871}
2215 2872
2216void 2873void
2217ev_stat_stop (EV_P_ ev_stat *w) 2874ev_stat_stop (EV_P_ ev_stat *w)
2218{ 2875{
2219 clear_pending (EV_A_ (W)w); 2876 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w))) 2877 if (expect_false (!ev_is_active (w)))
2221 return; 2878 return;
2222 2879
2880 EV_FREQUENT_CHECK;
2881
2223#if EV_USE_INOTIFY 2882#if EV_USE_INOTIFY
2224 infy_del (EV_A_ w); 2883 infy_del (EV_A_ w);
2225#endif 2884#endif
2226 ev_timer_stop (EV_A_ &w->timer); 2885 ev_timer_stop (EV_A_ &w->timer);
2227 2886
2228 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2229} 2890}
2230#endif 2891#endif
2231 2892
2232#if EV_IDLE_ENABLE 2893#if EV_IDLE_ENABLE
2233void 2894void
… …
2235{ 2896{
2236 if (expect_false (ev_is_active (w))) 2897 if (expect_false (ev_is_active (w)))
2237 return; 2898 return;
2238 2899
2239 pri_adjust (EV_A_ (W)w); 2900 pri_adjust (EV_A_ (W)w);
2901
2902 EV_FREQUENT_CHECK;
2240 2903
2241 { 2904 {
2242 int active = ++idlecnt [ABSPRI (w)]; 2905 int active = ++idlecnt [ABSPRI (w)];
2243 2906
2244 ++idleall; 2907 ++idleall;
2245 ev_start (EV_A_ (W)w, active); 2908 ev_start (EV_A_ (W)w, active);
2246 2909
2247 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2910 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2248 idles [ABSPRI (w)][active - 1] = w; 2911 idles [ABSPRI (w)][active - 1] = w;
2249 } 2912 }
2913
2914 EV_FREQUENT_CHECK;
2250} 2915}
2251 2916
2252void 2917void
2253ev_idle_stop (EV_P_ ev_idle *w) 2918ev_idle_stop (EV_P_ ev_idle *w)
2254{ 2919{
2255 clear_pending (EV_A_ (W)w); 2920 clear_pending (EV_A_ (W)w);
2256 if (expect_false (!ev_is_active (w))) 2921 if (expect_false (!ev_is_active (w)))
2257 return; 2922 return;
2258 2923
2924 EV_FREQUENT_CHECK;
2925
2259 { 2926 {
2260 int active = ((W)w)->active; 2927 int active = ev_active (w);
2261 2928
2262 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2929 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2263 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2930 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2264 2931
2265 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2266 --idleall; 2933 --idleall;
2267 } 2934 }
2935
2936 EV_FREQUENT_CHECK;
2268} 2937}
2269#endif 2938#endif
2270 2939
2271void 2940void
2272ev_prepare_start (EV_P_ ev_prepare *w) 2941ev_prepare_start (EV_P_ ev_prepare *w)
2273{ 2942{
2274 if (expect_false (ev_is_active (w))) 2943 if (expect_false (ev_is_active (w)))
2275 return; 2944 return;
2945
2946 EV_FREQUENT_CHECK;
2276 2947
2277 ev_start (EV_A_ (W)w, ++preparecnt); 2948 ev_start (EV_A_ (W)w, ++preparecnt);
2278 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2949 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2279 prepares [preparecnt - 1] = w; 2950 prepares [preparecnt - 1] = w;
2951
2952 EV_FREQUENT_CHECK;
2280} 2953}
2281 2954
2282void 2955void
2283ev_prepare_stop (EV_P_ ev_prepare *w) 2956ev_prepare_stop (EV_P_ ev_prepare *w)
2284{ 2957{
2285 clear_pending (EV_A_ (W)w); 2958 clear_pending (EV_A_ (W)w);
2286 if (expect_false (!ev_is_active (w))) 2959 if (expect_false (!ev_is_active (w)))
2287 return; 2960 return;
2288 2961
2962 EV_FREQUENT_CHECK;
2963
2289 { 2964 {
2290 int active = ((W)w)->active; 2965 int active = ev_active (w);
2966
2291 prepares [active - 1] = prepares [--preparecnt]; 2967 prepares [active - 1] = prepares [--preparecnt];
2292 ((W)prepares [active - 1])->active = active; 2968 ev_active (prepares [active - 1]) = active;
2293 } 2969 }
2294 2970
2295 ev_stop (EV_A_ (W)w); 2971 ev_stop (EV_A_ (W)w);
2972
2973 EV_FREQUENT_CHECK;
2296} 2974}
2297 2975
2298void 2976void
2299ev_check_start (EV_P_ ev_check *w) 2977ev_check_start (EV_P_ ev_check *w)
2300{ 2978{
2301 if (expect_false (ev_is_active (w))) 2979 if (expect_false (ev_is_active (w)))
2302 return; 2980 return;
2981
2982 EV_FREQUENT_CHECK;
2303 2983
2304 ev_start (EV_A_ (W)w, ++checkcnt); 2984 ev_start (EV_A_ (W)w, ++checkcnt);
2305 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2985 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2306 checks [checkcnt - 1] = w; 2986 checks [checkcnt - 1] = w;
2987
2988 EV_FREQUENT_CHECK;
2307} 2989}
2308 2990
2309void 2991void
2310ev_check_stop (EV_P_ ev_check *w) 2992ev_check_stop (EV_P_ ev_check *w)
2311{ 2993{
2312 clear_pending (EV_A_ (W)w); 2994 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w))) 2995 if (expect_false (!ev_is_active (w)))
2314 return; 2996 return;
2315 2997
2998 EV_FREQUENT_CHECK;
2999
2316 { 3000 {
2317 int active = ((W)w)->active; 3001 int active = ev_active (w);
3002
2318 checks [active - 1] = checks [--checkcnt]; 3003 checks [active - 1] = checks [--checkcnt];
2319 ((W)checks [active - 1])->active = active; 3004 ev_active (checks [active - 1]) = active;
2320 } 3005 }
2321 3006
2322 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
2323} 3010}
2324 3011
2325#if EV_EMBED_ENABLE 3012#if EV_EMBED_ENABLE
2326void noinline 3013void noinline
2327ev_embed_sweep (EV_P_ ev_embed *w) 3014ev_embed_sweep (EV_P_ ev_embed *w)
… …
2354 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3041 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2355 } 3042 }
2356 } 3043 }
2357} 3044}
2358 3045
3046static void
3047embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3048{
3049 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3050
3051 ev_embed_stop (EV_A_ w);
3052
3053 {
3054 struct ev_loop *loop = w->other;
3055
3056 ev_loop_fork (EV_A);
3057 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058 }
3059
3060 ev_embed_start (EV_A_ w);
3061}
3062
2359#if 0 3063#if 0
2360static void 3064static void
2361embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3065embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2362{ 3066{
2363 ev_idle_stop (EV_A_ idle); 3067 ev_idle_stop (EV_A_ idle);
… …
2370 if (expect_false (ev_is_active (w))) 3074 if (expect_false (ev_is_active (w)))
2371 return; 3075 return;
2372 3076
2373 { 3077 {
2374 struct ev_loop *loop = w->other; 3078 struct ev_loop *loop = w->other;
2375 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3079 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2376 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3080 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2377 } 3081 }
3082
3083 EV_FREQUENT_CHECK;
2378 3084
2379 ev_set_priority (&w->io, ev_priority (w)); 3085 ev_set_priority (&w->io, ev_priority (w));
2380 ev_io_start (EV_A_ &w->io); 3086 ev_io_start (EV_A_ &w->io);
2381 3087
2382 ev_prepare_init (&w->prepare, embed_prepare_cb); 3088 ev_prepare_init (&w->prepare, embed_prepare_cb);
2383 ev_set_priority (&w->prepare, EV_MINPRI); 3089 ev_set_priority (&w->prepare, EV_MINPRI);
2384 ev_prepare_start (EV_A_ &w->prepare); 3090 ev_prepare_start (EV_A_ &w->prepare);
2385 3091
3092 ev_fork_init (&w->fork, embed_fork_cb);
3093 ev_fork_start (EV_A_ &w->fork);
3094
2386 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3095 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2387 3096
2388 ev_start (EV_A_ (W)w, 1); 3097 ev_start (EV_A_ (W)w, 1);
3098
3099 EV_FREQUENT_CHECK;
2389} 3100}
2390 3101
2391void 3102void
2392ev_embed_stop (EV_P_ ev_embed *w) 3103ev_embed_stop (EV_P_ ev_embed *w)
2393{ 3104{
2394 clear_pending (EV_A_ (W)w); 3105 clear_pending (EV_A_ (W)w);
2395 if (expect_false (!ev_is_active (w))) 3106 if (expect_false (!ev_is_active (w)))
2396 return; 3107 return;
2397 3108
3109 EV_FREQUENT_CHECK;
3110
2398 ev_io_stop (EV_A_ &w->io); 3111 ev_io_stop (EV_A_ &w->io);
2399 ev_prepare_stop (EV_A_ &w->prepare); 3112 ev_prepare_stop (EV_A_ &w->prepare);
3113 ev_fork_stop (EV_A_ &w->fork);
2400 3114
2401 ev_stop (EV_A_ (W)w); 3115 EV_FREQUENT_CHECK;
2402} 3116}
2403#endif 3117#endif
2404 3118
2405#if EV_FORK_ENABLE 3119#if EV_FORK_ENABLE
2406void 3120void
2407ev_fork_start (EV_P_ ev_fork *w) 3121ev_fork_start (EV_P_ ev_fork *w)
2408{ 3122{
2409 if (expect_false (ev_is_active (w))) 3123 if (expect_false (ev_is_active (w)))
2410 return; 3124 return;
3125
3126 EV_FREQUENT_CHECK;
2411 3127
2412 ev_start (EV_A_ (W)w, ++forkcnt); 3128 ev_start (EV_A_ (W)w, ++forkcnt);
2413 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3129 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2414 forks [forkcnt - 1] = w; 3130 forks [forkcnt - 1] = w;
3131
3132 EV_FREQUENT_CHECK;
2415} 3133}
2416 3134
2417void 3135void
2418ev_fork_stop (EV_P_ ev_fork *w) 3136ev_fork_stop (EV_P_ ev_fork *w)
2419{ 3137{
2420 clear_pending (EV_A_ (W)w); 3138 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2422 return; 3140 return;
2423 3141
3142 EV_FREQUENT_CHECK;
3143
2424 { 3144 {
2425 int active = ((W)w)->active; 3145 int active = ev_active (w);
3146
2426 forks [active - 1] = forks [--forkcnt]; 3147 forks [active - 1] = forks [--forkcnt];
2427 ((W)forks [active - 1])->active = active; 3148 ev_active (forks [active - 1]) = active;
2428 } 3149 }
2429 3150
2430 ev_stop (EV_A_ (W)w); 3151 ev_stop (EV_A_ (W)w);
3152
3153 EV_FREQUENT_CHECK;
2431} 3154}
2432#endif 3155#endif
2433 3156
2434#if EV_ASYNC_ENABLE 3157#if EV_ASYNC_ENABLE
2435void 3158void
… …
2437{ 3160{
2438 if (expect_false (ev_is_active (w))) 3161 if (expect_false (ev_is_active (w)))
2439 return; 3162 return;
2440 3163
2441 evpipe_init (EV_A); 3164 evpipe_init (EV_A);
3165
3166 EV_FREQUENT_CHECK;
2442 3167
2443 ev_start (EV_A_ (W)w, ++asynccnt); 3168 ev_start (EV_A_ (W)w, ++asynccnt);
2444 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3169 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2445 asyncs [asynccnt - 1] = w; 3170 asyncs [asynccnt - 1] = w;
3171
3172 EV_FREQUENT_CHECK;
2446} 3173}
2447 3174
2448void 3175void
2449ev_async_stop (EV_P_ ev_async *w) 3176ev_async_stop (EV_P_ ev_async *w)
2450{ 3177{
2451 clear_pending (EV_A_ (W)w); 3178 clear_pending (EV_A_ (W)w);
2452 if (expect_false (!ev_is_active (w))) 3179 if (expect_false (!ev_is_active (w)))
2453 return; 3180 return;
2454 3181
3182 EV_FREQUENT_CHECK;
3183
2455 { 3184 {
2456 int active = ((W)w)->active; 3185 int active = ev_active (w);
3186
2457 asyncs [active - 1] = asyncs [--asynccnt]; 3187 asyncs [active - 1] = asyncs [--asynccnt];
2458 ((W)asyncs [active - 1])->active = active; 3188 ev_active (asyncs [active - 1]) = active;
2459 } 3189 }
2460 3190
2461 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
3192
3193 EV_FREQUENT_CHECK;
2462} 3194}
2463 3195
2464void 3196void
2465ev_async_send (EV_P_ ev_async *w) 3197ev_async_send (EV_P_ ev_async *w)
2466{ 3198{
2467 w->sent = 1; 3199 w->sent = 1;
2468 evpipe_write (EV_A_ 0, 1); 3200 evpipe_write (EV_A_ &gotasync);
2469} 3201}
2470#endif 3202#endif
2471 3203
2472/*****************************************************************************/ 3204/*****************************************************************************/
2473 3205
… …
2483once_cb (EV_P_ struct ev_once *once, int revents) 3215once_cb (EV_P_ struct ev_once *once, int revents)
2484{ 3216{
2485 void (*cb)(int revents, void *arg) = once->cb; 3217 void (*cb)(int revents, void *arg) = once->cb;
2486 void *arg = once->arg; 3218 void *arg = once->arg;
2487 3219
2488 ev_io_stop (EV_A_ &once->io); 3220 ev_io_stop (EV_A_ &once->io);
2489 ev_timer_stop (EV_A_ &once->to); 3221 ev_timer_stop (EV_A_ &once->to);
2490 ev_free (once); 3222 ev_free (once);
2491 3223
2492 cb (revents, arg); 3224 cb (revents, arg);
2493} 3225}
2494 3226
2495static void 3227static void
2496once_cb_io (EV_P_ ev_io *w, int revents) 3228once_cb_io (EV_P_ ev_io *w, int revents)
2497{ 3229{
2498 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3230 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3231
3232 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2499} 3233}
2500 3234
2501static void 3235static void
2502once_cb_to (EV_P_ ev_timer *w, int revents) 3236once_cb_to (EV_P_ ev_timer *w, int revents)
2503{ 3237{
2504 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3238 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3239
3240 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2505} 3241}
2506 3242
2507void 3243void
2508ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3244ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2509{ 3245{
… …
2531 ev_timer_set (&once->to, timeout, 0.); 3267 ev_timer_set (&once->to, timeout, 0.);
2532 ev_timer_start (EV_A_ &once->to); 3268 ev_timer_start (EV_A_ &once->to);
2533 } 3269 }
2534} 3270}
2535 3271
3272/*****************************************************************************/
3273
3274#if EV_WALK_ENABLE
3275void
3276ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3277{
3278 int i, j;
3279 ev_watcher_list *wl, *wn;
3280
3281 if (types & (EV_IO | EV_EMBED))
3282 for (i = 0; i < anfdmax; ++i)
3283 for (wl = anfds [i].head; wl; )
3284 {
3285 wn = wl->next;
3286
3287#if EV_EMBED_ENABLE
3288 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3289 {
3290 if (types & EV_EMBED)
3291 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3292 }
3293 else
3294#endif
3295#if EV_USE_INOTIFY
3296 if (ev_cb ((ev_io *)wl) == infy_cb)
3297 ;
3298 else
3299#endif
3300 if ((ev_io *)wl != &pipe_w)
3301 if (types & EV_IO)
3302 cb (EV_A_ EV_IO, wl);
3303
3304 wl = wn;
3305 }
3306
3307 if (types & (EV_TIMER | EV_STAT))
3308 for (i = timercnt + HEAP0; i-- > HEAP0; )
3309#if EV_STAT_ENABLE
3310 /*TODO: timer is not always active*/
3311 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3312 {
3313 if (types & EV_STAT)
3314 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3315 }
3316 else
3317#endif
3318 if (types & EV_TIMER)
3319 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3320
3321#if EV_PERIODIC_ENABLE
3322 if (types & EV_PERIODIC)
3323 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3324 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3325#endif
3326
3327#if EV_IDLE_ENABLE
3328 if (types & EV_IDLE)
3329 for (j = NUMPRI; i--; )
3330 for (i = idlecnt [j]; i--; )
3331 cb (EV_A_ EV_IDLE, idles [j][i]);
3332#endif
3333
3334#if EV_FORK_ENABLE
3335 if (types & EV_FORK)
3336 for (i = forkcnt; i--; )
3337 if (ev_cb (forks [i]) != embed_fork_cb)
3338 cb (EV_A_ EV_FORK, forks [i]);
3339#endif
3340
3341#if EV_ASYNC_ENABLE
3342 if (types & EV_ASYNC)
3343 for (i = asynccnt; i--; )
3344 cb (EV_A_ EV_ASYNC, asyncs [i]);
3345#endif
3346
3347 if (types & EV_PREPARE)
3348 for (i = preparecnt; i--; )
3349#if EV_EMBED_ENABLE
3350 if (ev_cb (prepares [i]) != embed_prepare_cb)
3351#endif
3352 cb (EV_A_ EV_PREPARE, prepares [i]);
3353
3354 if (types & EV_CHECK)
3355 for (i = checkcnt; i--; )
3356 cb (EV_A_ EV_CHECK, checks [i]);
3357
3358 if (types & EV_SIGNAL)
3359 for (i = 0; i < signalmax; ++i)
3360 for (wl = signals [i].head; wl; )
3361 {
3362 wn = wl->next;
3363 cb (EV_A_ EV_SIGNAL, wl);
3364 wl = wn;
3365 }
3366
3367 if (types & EV_CHILD)
3368 for (i = EV_PID_HASHSIZE; i--; )
3369 for (wl = childs [i]; wl; )
3370 {
3371 wn = wl->next;
3372 cb (EV_A_ EV_CHILD, wl);
3373 wl = wn;
3374 }
3375/* EV_STAT 0x00001000 /* stat data changed */
3376/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3377}
3378#endif
3379
2536#if EV_MULTIPLICITY 3380#if EV_MULTIPLICITY
2537 #include "ev_wrap.h" 3381 #include "ev_wrap.h"
2538#endif 3382#endif
2539 3383
2540#ifdef __cplusplus 3384#ifdef __cplusplus

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