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Comparing libev/ev.c (file contents):
Revision 1.208 by root, Fri Feb 1 13:22:48 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--; )
848 if (signals [signum].gotsig) 1152 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1); 1153 ev_feed_signal_event (EV_A_ signum + 1);
850 } 1154 }
851 1155
1156#if EV_ASYNC_ENABLE
852 if (gotasync) 1157 if (gotasync)
853 { 1158 {
854 int i; 1159 int i;
855 gotasync = 0; 1160 gotasync = 0;
856 1161
… …
859 { 1164 {
860 asyncs [i]->sent = 0; 1165 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 1166 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 } 1167 }
863 } 1168 }
1169#endif
864} 1170}
865 1171
866/*****************************************************************************/ 1172/*****************************************************************************/
867 1173
868static void 1174static void
869sighandler (int signum) 1175ev_sighandler (int signum)
870{ 1176{
871#if EV_MULTIPLICITY 1177#if EV_MULTIPLICITY
872 struct ev_loop *loop = &default_loop_struct; 1178 struct ev_loop *loop = &default_loop_struct;
873#endif 1179#endif
874 1180
875#if _WIN32 1181#if _WIN32
876 signal (signum, sighandler); 1182 signal (signum, ev_sighandler);
877#endif 1183#endif
878 1184
879 signals [signum - 1].gotsig = 1; 1185 signals [signum - 1].gotsig = 1;
880 evpipe_write (EV_A_ 1, 0); 1186 evpipe_write (EV_A_ &gotsig);
881} 1187}
882 1188
883void noinline 1189void noinline
884ev_feed_signal_event (EV_P_ int signum) 1190ev_feed_signal_event (EV_P_ int signum)
885{ 1191{
886 WL w; 1192 WL w;
887 1193
888#if EV_MULTIPLICITY 1194#if EV_MULTIPLICITY
889 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));
890#endif 1196#endif
891 1197
892 --signum; 1198 --signum;
893 1199
894 if (signum < 0 || signum >= signalmax) 1200 if (signum < 0 || signum >= signalmax)
… …
910 1216
911#ifndef WIFCONTINUED 1217#ifndef WIFCONTINUED
912# define WIFCONTINUED(status) 0 1218# define WIFCONTINUED(status) 0
913#endif 1219#endif
914 1220
915void inline_speed 1221/* handle a single child status event */
1222inline_speed void
916child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1223child_reap (EV_P_ int chain, int pid, int status)
917{ 1224{
918 ev_child *w; 1225 ev_child *w;
919 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
920 1227
921 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)
922 { 1229 {
923 if ((w->pid == pid || !w->pid) 1230 if ((w->pid == pid || !w->pid)
924 && (!traced || (w->flags & 1))) 1231 && (!traced || (w->flags & 1)))
925 { 1232 {
926 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 */
927 w->rpid = pid; 1234 w->rpid = pid;
928 w->rstatus = status; 1235 w->rstatus = status;
929 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1236 ev_feed_event (EV_A_ (W)w, EV_CHILD);
930 } 1237 }
931 } 1238 }
… …
933 1240
934#ifndef WCONTINUED 1241#ifndef WCONTINUED
935# define WCONTINUED 0 1242# define WCONTINUED 0
936#endif 1243#endif
937 1244
1245/* called on sigchld etc., calls waitpid */
938static void 1246static void
939childcb (EV_P_ ev_signal *sw, int revents) 1247childcb (EV_P_ ev_signal *sw, int revents)
940{ 1248{
941 int pid, status; 1249 int pid, status;
942 1250
… …
945 if (!WCONTINUED 1253 if (!WCONTINUED
946 || errno != EINVAL 1254 || errno != EINVAL
947 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1255 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
948 return; 1256 return;
949 1257
950 /* 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 */
951 /* 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 */
952 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
953 1261
954 child_reap (EV_A_ sw, pid, pid, status); 1262 child_reap (EV_A_ pid, pid, status);
955 if (EV_PID_HASHSIZE > 1) 1263 if (EV_PID_HASHSIZE > 1)
956 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 */
957} 1265}
958 1266
959#endif 1267#endif
960 1268
961/*****************************************************************************/ 1269/*****************************************************************************/
… …
1023 /* kqueue is borked on everything but netbsd apparently */ 1331 /* kqueue is borked on everything but netbsd apparently */
1024 /* 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 */
1025 flags &= ~EVBACKEND_KQUEUE; 1333 flags &= ~EVBACKEND_KQUEUE;
1026#endif 1334#endif
1027#ifdef __APPLE__ 1335#ifdef __APPLE__
1028 // flags &= ~EVBACKEND_KQUEUE; for documentation 1336 /* only select works correctly on that "unix-certified" platform */
1029 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 */
1030#endif 1339#endif
1031 1340
1032 return flags; 1341 return flags;
1033} 1342}
1034 1343
… …
1054ev_loop_count (EV_P) 1363ev_loop_count (EV_P)
1055{ 1364{
1056 return loop_count; 1365 return loop_count;
1057} 1366}
1058 1367
1368unsigned int
1369ev_loop_depth (EV_P)
1370{
1371 return loop_depth;
1372}
1373
1059void 1374void
1060ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061{ 1376{
1062 io_blocktime = interval; 1377 io_blocktime = interval;
1063} 1378}
… …
1066ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067{ 1382{
1068 timeout_blocktime = interval; 1383 timeout_blocktime = interval;
1069} 1384}
1070 1385
1386/* initialise a loop structure, must be zero-initialised */
1071static void noinline 1387static void noinline
1072loop_init (EV_P_ unsigned int flags) 1388loop_init (EV_P_ unsigned int flags)
1073{ 1389{
1074 if (!backend) 1390 if (!backend)
1075 { 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
1076#if EV_USE_MONOTONIC 1402#if EV_USE_MONOTONIC
1403 if (!have_monotonic)
1077 { 1404 {
1078 struct timespec ts; 1405 struct timespec ts;
1406
1079 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1080 have_monotonic = 1; 1408 have_monotonic = 1;
1081 } 1409 }
1082#endif 1410#endif
1083 1411
1084 ev_rt_now = ev_time (); 1412 ev_rt_now = ev_time ();
1085 mn_now = get_clock (); 1413 mn_now = get_clock ();
1086 now_floor = mn_now; 1414 now_floor = mn_now;
1087 rtmn_diff = ev_rt_now - mn_now; 1415 rtmn_diff = ev_rt_now - mn_now;
1088 1416
1089 io_blocktime = 0.; 1417 io_blocktime = 0.;
1090 timeout_blocktime = 0.; 1418 timeout_blocktime = 0.;
1419 backend = 0;
1420 backend_fd = -1;
1421 gotasync = 0;
1422#if EV_USE_INOTIFY
1423 fs_fd = -2;
1424#endif
1091 1425
1092 /* pid check not overridable via env */ 1426 /* pid check not overridable via env */
1093#ifndef _WIN32 1427#ifndef _WIN32
1094 if (flags & EVFLAG_FORKCHECK) 1428 if (flags & EVFLAG_FORKCHECK)
1095 curpid = getpid (); 1429 curpid = getpid ();
… …
1098 if (!(flags & EVFLAG_NOENV) 1432 if (!(flags & EVFLAG_NOENV)
1099 && !enable_secure () 1433 && !enable_secure ()
1100 && getenv ("LIBEV_FLAGS")) 1434 && getenv ("LIBEV_FLAGS"))
1101 flags = atoi (getenv ("LIBEV_FLAGS")); 1435 flags = atoi (getenv ("LIBEV_FLAGS"));
1102 1436
1103 if (!(flags & 0x0000ffffUL)) 1437 if (!(flags & 0x0000ffffU))
1104 flags |= ev_recommended_backends (); 1438 flags |= ev_recommended_backends ();
1105
1106 backend = 0;
1107 backend_fd = -1;
1108#if EV_USE_INOTIFY
1109 fs_fd = -2;
1110#endif
1111 1439
1112#if EV_USE_PORT 1440#if EV_USE_PORT
1113 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1441 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1114#endif 1442#endif
1115#if EV_USE_KQUEUE 1443#if EV_USE_KQUEUE
… …
1123#endif 1451#endif
1124#if EV_USE_SELECT 1452#if EV_USE_SELECT
1125 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1453 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1126#endif 1454#endif
1127 1455
1456 ev_prepare_init (&pending_w, pendingcb);
1457
1128 ev_init (&pipeev, pipecb); 1458 ev_init (&pipe_w, pipecb);
1129 ev_set_priority (&pipeev, EV_MAXPRI); 1459 ev_set_priority (&pipe_w, EV_MAXPRI);
1130 } 1460 }
1131} 1461}
1132 1462
1463/* free up a loop structure */
1133static void noinline 1464static void noinline
1134loop_destroy (EV_P) 1465loop_destroy (EV_P)
1135{ 1466{
1136 int i; 1467 int i;
1137 1468
1138 if (ev_is_active (&pipeev)) 1469 if (ev_is_active (&pipe_w))
1139 { 1470 {
1140 ev_ref (EV_A); /* signal watcher */ 1471 ev_ref (EV_A); /* signal watcher */
1141 ev_io_stop (EV_A_ &pipeev); 1472 ev_io_stop (EV_A_ &pipe_w);
1142 1473
1143 close (evpipe [0]); evpipe [0] = 0; 1474#if EV_USE_EVENTFD
1144 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 }
1145 } 1484 }
1146 1485
1147#if EV_USE_INOTIFY 1486#if EV_USE_INOTIFY
1148 if (fs_fd >= 0) 1487 if (fs_fd >= 0)
1149 close (fs_fd); 1488 close (fs_fd);
… …
1177 } 1516 }
1178 1517
1179 ev_free (anfds); anfdmax = 0; 1518 ev_free (anfds); anfdmax = 0;
1180 1519
1181 /* 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);
1182 array_free (fdchange, EMPTY); 1522 array_free (fdchange, EMPTY);
1183 array_free (timer, EMPTY); 1523 array_free (timer, EMPTY);
1184#if EV_PERIODIC_ENABLE 1524#if EV_PERIODIC_ENABLE
1185 array_free (periodic, EMPTY); 1525 array_free (periodic, EMPTY);
1186#endif 1526#endif
1187#if EV_FORK_ENABLE 1527#if EV_FORK_ENABLE
1188 array_free (fork, EMPTY); 1528 array_free (fork, EMPTY);
1189#endif 1529#endif
1190 array_free (prepare, EMPTY); 1530 array_free (prepare, EMPTY);
1191 array_free (check, EMPTY); 1531 array_free (check, EMPTY);
1532#if EV_ASYNC_ENABLE
1533 array_free (async, EMPTY);
1534#endif
1192 1535
1193 backend = 0; 1536 backend = 0;
1194} 1537}
1195 1538
1539#if EV_USE_INOTIFY
1196void inline_size infy_fork (EV_P); 1540inline_size void infy_fork (EV_P);
1541#endif
1197 1542
1198void inline_size 1543inline_size void
1199loop_fork (EV_P) 1544loop_fork (EV_P)
1200{ 1545{
1201#if EV_USE_PORT 1546#if EV_USE_PORT
1202 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1547 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1203#endif 1548#endif
… …
1209#endif 1554#endif
1210#if EV_USE_INOTIFY 1555#if EV_USE_INOTIFY
1211 infy_fork (EV_A); 1556 infy_fork (EV_A);
1212#endif 1557#endif
1213 1558
1214 if (ev_is_active (&pipeev)) 1559 if (ev_is_active (&pipe_w))
1215 { 1560 {
1216 /* 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
1217 gotsig = gotasync = 1; 1565 gotasync = 1;
1566#endif
1218 1567
1219 ev_ref (EV_A); 1568 ev_ref (EV_A);
1220 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 {
1221 close (evpipe [0]); 1578 close (evpipe [0]);
1222 close (evpipe [1]); 1579 close (evpipe [1]);
1580 }
1223 1581
1224 evpipe_init (EV_A); 1582 evpipe_init (EV_A);
1225 /* now iterate over everything, in case we missed something */ 1583 /* now iterate over everything, in case we missed something */
1226 pipecb (EV_A_ &pipeev, EV_READ); 1584 pipecb (EV_A_ &pipe_w, EV_READ);
1227 } 1585 }
1228 1586
1229 postfork = 0; 1587 postfork = 0;
1230} 1588}
1231 1589
1232#if EV_MULTIPLICITY 1590#if EV_MULTIPLICITY
1591
1233struct ev_loop * 1592struct ev_loop *
1234ev_loop_new (unsigned int flags) 1593ev_loop_new (unsigned int flags)
1235{ 1594{
1236 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));
1237 1596
… …
1256ev_loop_fork (EV_P) 1615ev_loop_fork (EV_P)
1257{ 1616{
1258 postfork = 1; /* must be in line with ev_default_fork */ 1617 postfork = 1; /* must be in line with ev_default_fork */
1259} 1618}
1260 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)
1261#endif 1715# endif
1716#endif
1717}
1718
1719#endif /* multiplicity */
1262 1720
1263#if EV_MULTIPLICITY 1721#if EV_MULTIPLICITY
1264struct ev_loop * 1722struct ev_loop *
1265ev_default_loop_init (unsigned int flags) 1723ev_default_loop_init (unsigned int flags)
1266#else 1724#else
… …
1299{ 1757{
1300#if EV_MULTIPLICITY 1758#if EV_MULTIPLICITY
1301 struct ev_loop *loop = ev_default_loop_ptr; 1759 struct ev_loop *loop = ev_default_loop_ptr;
1302#endif 1760#endif
1303 1761
1762 ev_default_loop_ptr = 0;
1763
1304#ifndef _WIN32 1764#ifndef _WIN32
1305 ev_ref (EV_A); /* child watcher */ 1765 ev_ref (EV_A); /* child watcher */
1306 ev_signal_stop (EV_A_ &childev); 1766 ev_signal_stop (EV_A_ &childev);
1307#endif 1767#endif
1308 1768
… …
1314{ 1774{
1315#if EV_MULTIPLICITY 1775#if EV_MULTIPLICITY
1316 struct ev_loop *loop = ev_default_loop_ptr; 1776 struct ev_loop *loop = ev_default_loop_ptr;
1317#endif 1777#endif
1318 1778
1319 if (backend)
1320 postfork = 1; /* must be in line with ev_loop_fork */ 1779 postfork = 1; /* must be in line with ev_loop_fork */
1321} 1780}
1322 1781
1323/*****************************************************************************/ 1782/*****************************************************************************/
1324 1783
1325void 1784void
1326ev_invoke (EV_P_ void *w, int revents) 1785ev_invoke (EV_P_ void *w, int revents)
1327{ 1786{
1328 EV_CB_INVOKE ((W)w, revents); 1787 EV_CB_INVOKE ((W)w, revents);
1329} 1788}
1330 1789
1331void inline_speed 1790inline_speed void
1332call_pending (EV_P) 1791call_pending (EV_P)
1333{ 1792{
1334 int pri; 1793 int pri;
1335 1794
1336 for (pri = NUMPRI; pri--; ) 1795 for (pri = NUMPRI; pri--; )
1337 while (pendingcnt [pri]) 1796 while (pendingcnt [pri])
1338 { 1797 {
1339 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1798 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1340 1799
1341 if (expect_true (p->w))
1342 {
1343 /*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 */
1344 1802
1345 p->w->pending = 0; 1803 p->w->pending = 0;
1346 EV_CB_INVOKE (p->w, p->events); 1804 EV_CB_INVOKE (p->w, p->events);
1347 } 1805 EV_FREQUENT_CHECK;
1348 } 1806 }
1349} 1807}
1350 1808
1351void inline_size
1352timers_reify (EV_P)
1353{
1354 while (timercnt && ((WT)timers [0])->at <= mn_now)
1355 {
1356 ev_timer *w = (ev_timer *)timers [0];
1357
1358 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1359
1360 /* first reschedule or stop timer */
1361 if (w->repeat)
1362 {
1363 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1364
1365 ((WT)w)->at += w->repeat;
1366 if (((WT)w)->at < mn_now)
1367 ((WT)w)->at = mn_now;
1368
1369 downheap (timers, timercnt, 0);
1370 }
1371 else
1372 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1373
1374 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1375 }
1376}
1377
1378#if EV_PERIODIC_ENABLE
1379void inline_size
1380periodics_reify (EV_P)
1381{
1382 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1383 {
1384 ev_periodic *w = (ev_periodic *)periodics [0];
1385
1386 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1387
1388 /* first reschedule or stop timer */
1389 if (w->reschedule_cb)
1390 {
1391 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1392 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1393 downheap (periodics, periodiccnt, 0);
1394 }
1395 else if (w->interval)
1396 {
1397 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1399 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1400 downheap (periodics, periodiccnt, 0);
1401 }
1402 else
1403 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1404
1405 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1406 }
1407}
1408
1409static void noinline
1410periodics_reschedule (EV_P)
1411{
1412 int i;
1413
1414 /* adjust periodics after time jump */
1415 for (i = 0; i < periodiccnt; ++i)
1416 {
1417 ev_periodic *w = (ev_periodic *)periodics [i];
1418
1419 if (w->reschedule_cb)
1420 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1421 else if (w->interval)
1422 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1423 }
1424
1425 /* now rebuild the heap */
1426 for (i = periodiccnt >> 1; i--; )
1427 downheap (periodics, periodiccnt, i);
1428}
1429#endif
1430
1431#if EV_IDLE_ENABLE 1809#if EV_IDLE_ENABLE
1432void inline_size 1810/* make idle watchers pending. this handles the "call-idle */
1811/* only when higher priorities are idle" logic */
1812inline_size void
1433idle_reify (EV_P) 1813idle_reify (EV_P)
1434{ 1814{
1435 if (expect_false (idleall)) 1815 if (expect_false (idleall))
1436 { 1816 {
1437 int pri; 1817 int pri;
… …
1449 } 1829 }
1450 } 1830 }
1451} 1831}
1452#endif 1832#endif
1453 1833
1454void 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
1455time_update (EV_P_ ev_tstamp max_block) 1971time_update (EV_P_ ev_tstamp max_block)
1456{ 1972{
1457 int i;
1458
1459#if EV_USE_MONOTONIC 1973#if EV_USE_MONOTONIC
1460 if (expect_true (have_monotonic)) 1974 if (expect_true (have_monotonic))
1461 { 1975 {
1976 int i;
1462 ev_tstamp odiff = rtmn_diff; 1977 ev_tstamp odiff = rtmn_diff;
1463 1978
1464 mn_now = get_clock (); 1979 mn_now = get_clock ();
1465 1980
1466 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1981 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1484 */ 1999 */
1485 for (i = 4; --i; ) 2000 for (i = 4; --i; )
1486 { 2001 {
1487 rtmn_diff = ev_rt_now - mn_now; 2002 rtmn_diff = ev_rt_now - mn_now;
1488 2003
1489 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2004 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1490 return; /* all is well */ 2005 return; /* all is well */
1491 2006
1492 ev_rt_now = ev_time (); 2007 ev_rt_now = ev_time ();
1493 mn_now = get_clock (); 2008 mn_now = get_clock ();
1494 now_floor = mn_now; 2009 now_floor = mn_now;
1495 } 2010 }
1496 2011
2012 /* no timer adjustment, as the monotonic clock doesn't jump */
2013 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1497# if EV_PERIODIC_ENABLE 2014# if EV_PERIODIC_ENABLE
1498 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1499# endif 2016# endif
1500 /* no timer adjustment, as the monotonic clock doesn't jump */
1501 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502 } 2017 }
1503 else 2018 else
1504#endif 2019#endif
1505 { 2020 {
1506 ev_rt_now = ev_time (); 2021 ev_rt_now = ev_time ();
1507 2022
1508 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))
1509 { 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);
1510#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
1511 periodics_reschedule (EV_A); 2028 periodics_reschedule (EV_A);
1512#endif 2029#endif
1513 /* adjust timers. this is easy, as the offset is the same for all of them */
1514 for (i = 0; i < timercnt; ++i)
1515 ((WT)timers [i])->at += ev_rt_now - mn_now;
1516 } 2030 }
1517 2031
1518 mn_now = ev_rt_now; 2032 mn_now = ev_rt_now;
1519 } 2033 }
1520} 2034}
1521 2035
1522void 2036void
1523ev_ref (EV_P)
1524{
1525 ++activecnt;
1526}
1527
1528void
1529ev_unref (EV_P)
1530{
1531 --activecnt;
1532}
1533
1534static int loop_done;
1535
1536void
1537ev_loop (EV_P_ int flags) 2037ev_loop (EV_P_ int flags)
1538{ 2038{
1539 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2039 ++loop_depth;
1540 ? EVUNLOOP_ONE 2040
1541 : EVUNLOOP_CANCEL; 2041 loop_done = EVUNLOOP_CANCEL;
1542 2042
1543 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 */
1544 2044
1545 do 2045 do
1546 { 2046 {
2047#if EV_VERIFY >= 2
2048 ev_loop_verify (EV_A);
2049#endif
2050
1547#ifndef _WIN32 2051#ifndef _WIN32
1548 if (expect_false (curpid)) /* penalise the forking check even more */ 2052 if (expect_false (curpid)) /* penalise the forking check even more */
1549 if (expect_false (getpid () != curpid)) 2053 if (expect_false (getpid () != curpid))
1550 { 2054 {
1551 curpid = getpid (); 2055 curpid = getpid ();
… …
1568 { 2072 {
1569 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2073 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1570 call_pending (EV_A); 2074 call_pending (EV_A);
1571 } 2075 }
1572 2076
1573 if (expect_false (!activecnt))
1574 break;
1575
1576 /* we might have forked, so reify kernel state if necessary */ 2077 /* we might have forked, so reify kernel state if necessary */
1577 if (expect_false (postfork)) 2078 if (expect_false (postfork))
1578 loop_fork (EV_A); 2079 loop_fork (EV_A);
1579 2080
1580 /* update fd-related kernel structures */ 2081 /* update fd-related kernel structures */
… …
1585 ev_tstamp waittime = 0.; 2086 ev_tstamp waittime = 0.;
1586 ev_tstamp sleeptime = 0.; 2087 ev_tstamp sleeptime = 0.;
1587 2088
1588 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2089 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1589 { 2090 {
2091 /* remember old timestamp for io_blocktime calculation */
2092 ev_tstamp prev_mn_now = mn_now;
2093
1590 /* update time to cancel out callback processing overhead */ 2094 /* update time to cancel out callback processing overhead */
1591 time_update (EV_A_ 1e100); 2095 time_update (EV_A_ 1e100);
1592 2096
1593 waittime = MAX_BLOCKTIME; 2097 waittime = MAX_BLOCKTIME;
1594 2098
1595 if (timercnt) 2099 if (timercnt)
1596 { 2100 {
1597 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1598 if (waittime > to) waittime = to; 2102 if (waittime > to) waittime = to;
1599 } 2103 }
1600 2104
1601#if EV_PERIODIC_ENABLE 2105#if EV_PERIODIC_ENABLE
1602 if (periodiccnt) 2106 if (periodiccnt)
1603 { 2107 {
1604 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;
1605 if (waittime > to) waittime = to; 2109 if (waittime > to) waittime = to;
1606 } 2110 }
1607#endif 2111#endif
1608 2112
2113 /* don't let timeouts decrease the waittime below timeout_blocktime */
1609 if (expect_false (waittime < timeout_blocktime)) 2114 if (expect_false (waittime < timeout_blocktime))
1610 waittime = timeout_blocktime; 2115 waittime = timeout_blocktime;
1611 2116
1612 sleeptime = waittime - backend_fudge; 2117 /* extra check because io_blocktime is commonly 0 */
1613
1614 if (expect_true (sleeptime > io_blocktime)) 2118 if (expect_false (io_blocktime))
1615 sleeptime = io_blocktime;
1616
1617 if (sleeptime)
1618 { 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 {
1619 ev_sleep (sleeptime); 2127 ev_sleep (sleeptime);
1620 waittime -= sleeptime; 2128 waittime -= sleeptime;
2129 }
1621 } 2130 }
1622 } 2131 }
1623 2132
1624 ++loop_count; 2133 ++loop_count;
1625 backend_poll (EV_A_ waittime); 2134 backend_poll (EV_A_ waittime);
… …
1642 /* queue check watchers, to be executed first */ 2151 /* queue check watchers, to be executed first */
1643 if (expect_false (checkcnt)) 2152 if (expect_false (checkcnt))
1644 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2153 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1645 2154
1646 call_pending (EV_A); 2155 call_pending (EV_A);
1647
1648 } 2156 }
1649 while (expect_true (activecnt && !loop_done)); 2157 while (expect_true (
2158 activecnt
2159 && !loop_done
2160 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2161 ));
1650 2162
1651 if (loop_done == EVUNLOOP_ONE) 2163 if (loop_done == EVUNLOOP_ONE)
1652 loop_done = EVUNLOOP_CANCEL; 2164 loop_done = EVUNLOOP_CANCEL;
2165
2166 --loop_depth;
1653} 2167}
1654 2168
1655void 2169void
1656ev_unloop (EV_P_ int how) 2170ev_unloop (EV_P_ int how)
1657{ 2171{
1658 loop_done = how; 2172 loop_done = how;
1659} 2173}
1660 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
1661/*****************************************************************************/ 2212/*****************************************************************************/
2213/* singly-linked list management, used when the expected list length is short */
1662 2214
1663void inline_size 2215inline_size void
1664wlist_add (WL *head, WL elem) 2216wlist_add (WL *head, WL elem)
1665{ 2217{
1666 elem->next = *head; 2218 elem->next = *head;
1667 *head = elem; 2219 *head = elem;
1668} 2220}
1669 2221
1670void inline_size 2222inline_size void
1671wlist_del (WL *head, WL elem) 2223wlist_del (WL *head, WL elem)
1672{ 2224{
1673 while (*head) 2225 while (*head)
1674 { 2226 {
1675 if (*head == elem) 2227 if (*head == elem)
… …
1680 2232
1681 head = &(*head)->next; 2233 head = &(*head)->next;
1682 } 2234 }
1683} 2235}
1684 2236
1685void inline_speed 2237/* internal, faster, version of ev_clear_pending */
2238inline_speed void
1686clear_pending (EV_P_ W w) 2239clear_pending (EV_P_ W w)
1687{ 2240{
1688 if (w->pending) 2241 if (w->pending)
1689 { 2242 {
1690 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2243 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1691 w->pending = 0; 2244 w->pending = 0;
1692 } 2245 }
1693} 2246}
1694 2247
1695int 2248int
… …
1699 int pending = w_->pending; 2252 int pending = w_->pending;
1700 2253
1701 if (expect_true (pending)) 2254 if (expect_true (pending))
1702 { 2255 {
1703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2256 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2257 p->w = (W)&pending_w;
1704 w_->pending = 0; 2258 w_->pending = 0;
1705 p->w = 0;
1706 return p->events; 2259 return p->events;
1707 } 2260 }
1708 else 2261 else
1709 return 0; 2262 return 0;
1710} 2263}
1711 2264
1712void inline_size 2265inline_size void
1713pri_adjust (EV_P_ W w) 2266pri_adjust (EV_P_ W w)
1714{ 2267{
1715 int pri = w->priority; 2268 int pri = ev_priority (w);
1716 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2269 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2270 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1718 w->priority = pri; 2271 ev_set_priority (w, pri);
1719} 2272}
1720 2273
1721void inline_speed 2274inline_speed void
1722ev_start (EV_P_ W w, int active) 2275ev_start (EV_P_ W w, int active)
1723{ 2276{
1724 pri_adjust (EV_A_ w); 2277 pri_adjust (EV_A_ w);
1725 w->active = active; 2278 w->active = active;
1726 ev_ref (EV_A); 2279 ev_ref (EV_A);
1727} 2280}
1728 2281
1729void inline_size 2282inline_size void
1730ev_stop (EV_P_ W w) 2283ev_stop (EV_P_ W w)
1731{ 2284{
1732 ev_unref (EV_A); 2285 ev_unref (EV_A);
1733 w->active = 0; 2286 w->active = 0;
1734} 2287}
… …
1741 int fd = w->fd; 2294 int fd = w->fd;
1742 2295
1743 if (expect_false (ev_is_active (w))) 2296 if (expect_false (ev_is_active (w)))
1744 return; 2297 return;
1745 2298
1746 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;
1747 2303
1748 ev_start (EV_A_ (W)w, 1); 2304 ev_start (EV_A_ (W)w, 1);
1749 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2305 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1750 wlist_add (&anfds[fd].head, (WL)w); 2306 wlist_add (&anfds[fd].head, (WL)w);
1751 2307
1752 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2308 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1753 w->events &= ~EV_IOFDSET; 2309 w->events &= ~EV__IOFDSET;
2310
2311 EV_FREQUENT_CHECK;
1754} 2312}
1755 2313
1756void noinline 2314void noinline
1757ev_io_stop (EV_P_ ev_io *w) 2315ev_io_stop (EV_P_ ev_io *w)
1758{ 2316{
1759 clear_pending (EV_A_ (W)w); 2317 clear_pending (EV_A_ (W)w);
1760 if (expect_false (!ev_is_active (w))) 2318 if (expect_false (!ev_is_active (w)))
1761 return; 2319 return;
1762 2320
1763 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;
1764 2324
1765 wlist_del (&anfds[w->fd].head, (WL)w); 2325 wlist_del (&anfds[w->fd].head, (WL)w);
1766 ev_stop (EV_A_ (W)w); 2326 ev_stop (EV_A_ (W)w);
1767 2327
1768 fd_change (EV_A_ w->fd, 1); 2328 fd_change (EV_A_ w->fd, 1);
2329
2330 EV_FREQUENT_CHECK;
1769} 2331}
1770 2332
1771void noinline 2333void noinline
1772ev_timer_start (EV_P_ ev_timer *w) 2334ev_timer_start (EV_P_ ev_timer *w)
1773{ 2335{
1774 if (expect_false (ev_is_active (w))) 2336 if (expect_false (ev_is_active (w)))
1775 return; 2337 return;
1776 2338
1777 ((WT)w)->at += mn_now; 2339 ev_at (w) += mn_now;
1778 2340
1779 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.));
1780 2342
2343 EV_FREQUENT_CHECK;
2344
2345 ++timercnt;
1781 ev_start (EV_A_ (W)w, ++timercnt); 2346 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1782 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2347 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1783 timers [timercnt - 1] = (WT)w; 2348 ANHE_w (timers [ev_active (w)]) = (WT)w;
1784 upheap (timers, timercnt - 1); 2349 ANHE_at_cache (timers [ev_active (w)]);
2350 upheap (timers, ev_active (w));
1785 2351
2352 EV_FREQUENT_CHECK;
2353
1786 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2354 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1787} 2355}
1788 2356
1789void noinline 2357void noinline
1790ev_timer_stop (EV_P_ ev_timer *w) 2358ev_timer_stop (EV_P_ ev_timer *w)
1791{ 2359{
1792 clear_pending (EV_A_ (W)w); 2360 clear_pending (EV_A_ (W)w);
1793 if (expect_false (!ev_is_active (w))) 2361 if (expect_false (!ev_is_active (w)))
1794 return; 2362 return;
1795 2363
1796 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2364 EV_FREQUENT_CHECK;
1797 2365
1798 { 2366 {
1799 int active = ((W)w)->active; 2367 int active = ev_active (w);
1800 2368
2369 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2370
2371 --timercnt;
2372
1801 if (expect_true (--active < --timercnt)) 2373 if (expect_true (active < timercnt + HEAP0))
1802 { 2374 {
1803 timers [active] = timers [timercnt]; 2375 timers [active] = timers [timercnt + HEAP0];
1804 adjustheap (timers, timercnt, active); 2376 adjustheap (timers, timercnt, active);
1805 } 2377 }
1806 } 2378 }
1807 2379
1808 ((WT)w)->at -= mn_now; 2380 EV_FREQUENT_CHECK;
2381
2382 ev_at (w) -= mn_now;
1809 2383
1810 ev_stop (EV_A_ (W)w); 2384 ev_stop (EV_A_ (W)w);
1811} 2385}
1812 2386
1813void noinline 2387void noinline
1814ev_timer_again (EV_P_ ev_timer *w) 2388ev_timer_again (EV_P_ ev_timer *w)
1815{ 2389{
2390 EV_FREQUENT_CHECK;
2391
1816 if (ev_is_active (w)) 2392 if (ev_is_active (w))
1817 { 2393 {
1818 if (w->repeat) 2394 if (w->repeat)
1819 { 2395 {
1820 ((WT)w)->at = mn_now + w->repeat; 2396 ev_at (w) = mn_now + w->repeat;
2397 ANHE_at_cache (timers [ev_active (w)]);
1821 adjustheap (timers, timercnt, ((W)w)->active - 1); 2398 adjustheap (timers, timercnt, ev_active (w));
1822 } 2399 }
1823 else 2400 else
1824 ev_timer_stop (EV_A_ w); 2401 ev_timer_stop (EV_A_ w);
1825 } 2402 }
1826 else if (w->repeat) 2403 else if (w->repeat)
1827 { 2404 {
1828 w->at = w->repeat; 2405 ev_at (w) = w->repeat;
1829 ev_timer_start (EV_A_ w); 2406 ev_timer_start (EV_A_ w);
1830 } 2407 }
2408
2409 EV_FREQUENT_CHECK;
1831} 2410}
1832 2411
1833#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1834void noinline 2413void noinline
1835ev_periodic_start (EV_P_ ev_periodic *w) 2414ev_periodic_start (EV_P_ ev_periodic *w)
1836{ 2415{
1837 if (expect_false (ev_is_active (w))) 2416 if (expect_false (ev_is_active (w)))
1838 return; 2417 return;
1839 2418
1840 if (w->reschedule_cb) 2419 if (w->reschedule_cb)
1841 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2420 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1842 else if (w->interval) 2421 else if (w->interval)
1843 { 2422 {
1844 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.));
1845 /* 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 */
1846 ((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;
1847 } 2426 }
1848 else 2427 else
1849 ((WT)w)->at = w->offset; 2428 ev_at (w) = w->offset;
1850 2429
2430 EV_FREQUENT_CHECK;
2431
2432 ++periodiccnt;
1851 ev_start (EV_A_ (W)w, ++periodiccnt); 2433 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1852 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2434 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1853 periodics [periodiccnt - 1] = (WT)w; 2435 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1854 upheap (periodics, periodiccnt - 1); 2436 ANHE_at_cache (periodics [ev_active (w)]);
2437 upheap (periodics, ev_active (w));
1855 2438
2439 EV_FREQUENT_CHECK;
2440
1856 /*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));*/
1857} 2442}
1858 2443
1859void noinline 2444void noinline
1860ev_periodic_stop (EV_P_ ev_periodic *w) 2445ev_periodic_stop (EV_P_ ev_periodic *w)
1861{ 2446{
1862 clear_pending (EV_A_ (W)w); 2447 clear_pending (EV_A_ (W)w);
1863 if (expect_false (!ev_is_active (w))) 2448 if (expect_false (!ev_is_active (w)))
1864 return; 2449 return;
1865 2450
1866 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2451 EV_FREQUENT_CHECK;
1867 2452
1868 { 2453 {
1869 int active = ((W)w)->active; 2454 int active = ev_active (w);
1870 2455
2456 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2457
2458 --periodiccnt;
2459
1871 if (expect_true (--active < --periodiccnt)) 2460 if (expect_true (active < periodiccnt + HEAP0))
1872 { 2461 {
1873 periodics [active] = periodics [periodiccnt]; 2462 periodics [active] = periodics [periodiccnt + HEAP0];
1874 adjustheap (periodics, periodiccnt, active); 2463 adjustheap (periodics, periodiccnt, active);
1875 } 2464 }
1876 } 2465 }
1877 2466
2467 EV_FREQUENT_CHECK;
2468
1878 ev_stop (EV_A_ (W)w); 2469 ev_stop (EV_A_ (W)w);
1879} 2470}
1880 2471
1881void noinline 2472void noinline
1882ev_periodic_again (EV_P_ ev_periodic *w) 2473ev_periodic_again (EV_P_ ev_periodic *w)
… …
1893 2484
1894void noinline 2485void noinline
1895ev_signal_start (EV_P_ ev_signal *w) 2486ev_signal_start (EV_P_ ev_signal *w)
1896{ 2487{
1897#if EV_MULTIPLICITY 2488#if EV_MULTIPLICITY
1898 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));
1899#endif 2490#endif
1900 if (expect_false (ev_is_active (w))) 2491 if (expect_false (ev_is_active (w)))
1901 return; 2492 return;
1902 2493
1903 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));
1904 2495
1905 evpipe_init (EV_A); 2496 evpipe_init (EV_A);
2497
2498 EV_FREQUENT_CHECK;
1906 2499
1907 { 2500 {
1908#ifndef _WIN32 2501#ifndef _WIN32
1909 sigset_t full, prev; 2502 sigset_t full, prev;
1910 sigfillset (&full); 2503 sigfillset (&full);
1911 sigprocmask (SIG_SETMASK, &full, &prev); 2504 sigprocmask (SIG_SETMASK, &full, &prev);
1912#endif 2505#endif
1913 2506
1914 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2507 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1915 2508
1916#ifndef _WIN32 2509#ifndef _WIN32
1917 sigprocmask (SIG_SETMASK, &prev, 0); 2510 sigprocmask (SIG_SETMASK, &prev, 0);
1918#endif 2511#endif
1919 } 2512 }
… …
1922 wlist_add (&signals [w->signum - 1].head, (WL)w); 2515 wlist_add (&signals [w->signum - 1].head, (WL)w);
1923 2516
1924 if (!((WL)w)->next) 2517 if (!((WL)w)->next)
1925 { 2518 {
1926#if _WIN32 2519#if _WIN32
1927 signal (w->signum, sighandler); 2520 signal (w->signum, ev_sighandler);
1928#else 2521#else
1929 struct sigaction sa; 2522 struct sigaction sa;
1930 sa.sa_handler = sighandler; 2523 sa.sa_handler = ev_sighandler;
1931 sigfillset (&sa.sa_mask); 2524 sigfillset (&sa.sa_mask);
1932 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 */
1933 sigaction (w->signum, &sa, 0); 2526 sigaction (w->signum, &sa, 0);
1934#endif 2527#endif
1935 } 2528 }
2529
2530 EV_FREQUENT_CHECK;
1936} 2531}
1937 2532
1938void noinline 2533void noinline
1939ev_signal_stop (EV_P_ ev_signal *w) 2534ev_signal_stop (EV_P_ ev_signal *w)
1940{ 2535{
1941 clear_pending (EV_A_ (W)w); 2536 clear_pending (EV_A_ (W)w);
1942 if (expect_false (!ev_is_active (w))) 2537 if (expect_false (!ev_is_active (w)))
1943 return; 2538 return;
1944 2539
2540 EV_FREQUENT_CHECK;
2541
1945 wlist_del (&signals [w->signum - 1].head, (WL)w); 2542 wlist_del (&signals [w->signum - 1].head, (WL)w);
1946 ev_stop (EV_A_ (W)w); 2543 ev_stop (EV_A_ (W)w);
1947 2544
1948 if (!signals [w->signum - 1].head) 2545 if (!signals [w->signum - 1].head)
1949 signal (w->signum, SIG_DFL); 2546 signal (w->signum, SIG_DFL);
2547
2548 EV_FREQUENT_CHECK;
1950} 2549}
1951 2550
1952void 2551void
1953ev_child_start (EV_P_ ev_child *w) 2552ev_child_start (EV_P_ ev_child *w)
1954{ 2553{
1955#if EV_MULTIPLICITY 2554#if EV_MULTIPLICITY
1956 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));
1957#endif 2556#endif
1958 if (expect_false (ev_is_active (w))) 2557 if (expect_false (ev_is_active (w)))
1959 return; 2558 return;
1960 2559
2560 EV_FREQUENT_CHECK;
2561
1961 ev_start (EV_A_ (W)w, 1); 2562 ev_start (EV_A_ (W)w, 1);
1962 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;
1963} 2566}
1964 2567
1965void 2568void
1966ev_child_stop (EV_P_ ev_child *w) 2569ev_child_stop (EV_P_ ev_child *w)
1967{ 2570{
1968 clear_pending (EV_A_ (W)w); 2571 clear_pending (EV_A_ (W)w);
1969 if (expect_false (!ev_is_active (w))) 2572 if (expect_false (!ev_is_active (w)))
1970 return; 2573 return;
1971 2574
2575 EV_FREQUENT_CHECK;
2576
1972 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2577 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1973 ev_stop (EV_A_ (W)w); 2578 ev_stop (EV_A_ (W)w);
2579
2580 EV_FREQUENT_CHECK;
1974} 2581}
1975 2582
1976#if EV_STAT_ENABLE 2583#if EV_STAT_ENABLE
1977 2584
1978# ifdef _WIN32 2585# ifdef _WIN32
1979# undef lstat 2586# undef lstat
1980# define lstat(a,b) _stati64 (a,b) 2587# define lstat(a,b) _stati64 (a,b)
1981# endif 2588# endif
1982 2589
1983#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 */
1984#define MIN_STAT_INTERVAL 0.1074891 2592#define MIN_STAT_INTERVAL 0.1074891
1985 2593
1986static 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);
1987 2595
1988#if EV_USE_INOTIFY 2596#if EV_USE_INOTIFY
1989# define EV_INOTIFY_BUFSIZE 8192 2597# define EV_INOTIFY_BUFSIZE 8192
… …
1993{ 2601{
1994 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);
1995 2603
1996 if (w->wd < 0) 2604 if (w->wd < 0)
1997 { 2605 {
2606 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1998 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 */
1999 2608
2000 /* 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 */
2001 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2612 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2002 { 2613 {
2003 char path [4096]; 2614 char path [4096];
2004 strcpy (path, w->path); 2615 strcpy (path, w->path);
2005 2616
… …
2008 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2619 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2009 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2620 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2010 2621
2011 char *pend = strrchr (path, '/'); 2622 char *pend = strrchr (path, '/');
2012 2623
2013 if (!pend) 2624 if (!pend || pend == path)
2014 break; /* whoops, no '/', complain to your admin */ 2625 break;
2015 2626
2016 *pend = 0; 2627 *pend = 0;
2017 w->wd = inotify_add_watch (fs_fd, path, mask); 2628 w->wd = inotify_add_watch (fs_fd, path, mask);
2018 } 2629 }
2019 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2020 } 2631 }
2021 } 2632 }
2022 else
2023 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2024 2633
2025 if (w->wd >= 0) 2634 if (w->wd >= 0)
2635 {
2026 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 }
2027} 2655}
2028 2656
2029static void noinline 2657static void noinline
2030infy_del (EV_P_ ev_stat *w) 2658infy_del (EV_P_ ev_stat *w)
2031{ 2659{
… …
2045 2673
2046static void noinline 2674static void noinline
2047infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2675infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2048{ 2676{
2049 if (slot < 0) 2677 if (slot < 0)
2050 /* overflow, need to check for all hahs slots */ 2678 /* overflow, need to check for all hash slots */
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2679 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 infy_wd (EV_A_ slot, wd, ev); 2680 infy_wd (EV_A_ slot, wd, ev);
2053 else 2681 else
2054 { 2682 {
2055 WL w_; 2683 WL w_;
… …
2061 2689
2062 if (w->wd == wd || wd == -1) 2690 if (w->wd == wd || wd == -1)
2063 { 2691 {
2064 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2692 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2065 { 2693 {
2694 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2066 w->wd = -1; 2695 w->wd = -1;
2067 infy_add (EV_A_ w); /* re-add, no matter what */ 2696 infy_add (EV_A_ w); /* re-add, no matter what */
2068 } 2697 }
2069 2698
2070 stat_timer_cb (EV_A_ &w->timer, 0); 2699 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2083 2712
2084 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)
2085 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2714 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2086} 2715}
2087 2716
2088void 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
2089infy_init (EV_P) 2741infy_init (EV_P)
2090{ 2742{
2091 if (fs_fd != -2) 2743 if (fs_fd != -2)
2092 return; 2744 return;
2745
2746 fs_fd = -1;
2747
2748 check_2625 (EV_A);
2093 2749
2094 fs_fd = inotify_init (); 2750 fs_fd = inotify_init ();
2095 2751
2096 if (fs_fd >= 0) 2752 if (fs_fd >= 0)
2097 { 2753 {
… …
2099 ev_set_priority (&fs_w, EV_MAXPRI); 2755 ev_set_priority (&fs_w, EV_MAXPRI);
2100 ev_io_start (EV_A_ &fs_w); 2756 ev_io_start (EV_A_ &fs_w);
2101 } 2757 }
2102} 2758}
2103 2759
2104void inline_size 2760inline_size void
2105infy_fork (EV_P) 2761infy_fork (EV_P)
2106{ 2762{
2107 int slot; 2763 int slot;
2108 2764
2109 if (fs_fd < 0) 2765 if (fs_fd < 0)
… …
2125 w->wd = -1; 2781 w->wd = -1;
2126 2782
2127 if (fs_fd >= 0) 2783 if (fs_fd >= 0)
2128 infy_add (EV_A_ w); /* re-add, no matter what */ 2784 infy_add (EV_A_ w); /* re-add, no matter what */
2129 else 2785 else
2130 ev_timer_start (EV_A_ &w->timer); 2786 ev_timer_again (EV_A_ &w->timer);
2131 } 2787 }
2132
2133 } 2788 }
2134} 2789}
2135 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)
2136#endif 2797#endif
2137 2798
2138void 2799void
2139ev_stat_stat (EV_P_ ev_stat *w) 2800ev_stat_stat (EV_P_ ev_stat *w)
2140{ 2801{
… …
2167 || w->prev.st_atime != w->attr.st_atime 2828 || w->prev.st_atime != w->attr.st_atime
2168 || w->prev.st_mtime != w->attr.st_mtime 2829 || w->prev.st_mtime != w->attr.st_mtime
2169 || w->prev.st_ctime != w->attr.st_ctime 2830 || w->prev.st_ctime != w->attr.st_ctime
2170 ) { 2831 ) {
2171 #if EV_USE_INOTIFY 2832 #if EV_USE_INOTIFY
2833 if (fs_fd >= 0)
2834 {
2172 infy_del (EV_A_ w); 2835 infy_del (EV_A_ w);
2173 infy_add (EV_A_ w); 2836 infy_add (EV_A_ w);
2174 ev_stat_stat (EV_A_ w); /* avoid race... */ 2837 ev_stat_stat (EV_A_ w); /* avoid race... */
2838 }
2175 #endif 2839 #endif
2176 2840
2177 ev_feed_event (EV_A_ w, EV_STAT); 2841 ev_feed_event (EV_A_ w, EV_STAT);
2178 } 2842 }
2179} 2843}
… …
2182ev_stat_start (EV_P_ ev_stat *w) 2846ev_stat_start (EV_P_ ev_stat *w)
2183{ 2847{
2184 if (expect_false (ev_is_active (w))) 2848 if (expect_false (ev_is_active (w)))
2185 return; 2849 return;
2186 2850
2187 /* since we use memcmp, we need to clear any padding data etc. */
2188 memset (&w->prev, 0, sizeof (ev_statdata));
2189 memset (&w->attr, 0, sizeof (ev_statdata));
2190
2191 ev_stat_stat (EV_A_ w); 2851 ev_stat_stat (EV_A_ w);
2192 2852
2853 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2193 if (w->interval < MIN_STAT_INTERVAL) 2854 w->interval = MIN_STAT_INTERVAL;
2194 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2195 2855
2196 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);
2197 ev_set_priority (&w->timer, ev_priority (w)); 2857 ev_set_priority (&w->timer, ev_priority (w));
2198 2858
2199#if EV_USE_INOTIFY 2859#if EV_USE_INOTIFY
2200 infy_init (EV_A); 2860 infy_init (EV_A);
2201 2861
2202 if (fs_fd >= 0) 2862 if (fs_fd >= 0)
2203 infy_add (EV_A_ w); 2863 infy_add (EV_A_ w);
2204 else 2864 else
2205#endif 2865#endif
2206 ev_timer_start (EV_A_ &w->timer); 2866 ev_timer_again (EV_A_ &w->timer);
2207 2867
2208 ev_start (EV_A_ (W)w, 1); 2868 ev_start (EV_A_ (W)w, 1);
2869
2870 EV_FREQUENT_CHECK;
2209} 2871}
2210 2872
2211void 2873void
2212ev_stat_stop (EV_P_ ev_stat *w) 2874ev_stat_stop (EV_P_ ev_stat *w)
2213{ 2875{
2214 clear_pending (EV_A_ (W)w); 2876 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w))) 2877 if (expect_false (!ev_is_active (w)))
2216 return; 2878 return;
2217 2879
2880 EV_FREQUENT_CHECK;
2881
2218#if EV_USE_INOTIFY 2882#if EV_USE_INOTIFY
2219 infy_del (EV_A_ w); 2883 infy_del (EV_A_ w);
2220#endif 2884#endif
2221 ev_timer_stop (EV_A_ &w->timer); 2885 ev_timer_stop (EV_A_ &w->timer);
2222 2886
2223 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2224} 2890}
2225#endif 2891#endif
2226 2892
2227#if EV_IDLE_ENABLE 2893#if EV_IDLE_ENABLE
2228void 2894void
… …
2230{ 2896{
2231 if (expect_false (ev_is_active (w))) 2897 if (expect_false (ev_is_active (w)))
2232 return; 2898 return;
2233 2899
2234 pri_adjust (EV_A_ (W)w); 2900 pri_adjust (EV_A_ (W)w);
2901
2902 EV_FREQUENT_CHECK;
2235 2903
2236 { 2904 {
2237 int active = ++idlecnt [ABSPRI (w)]; 2905 int active = ++idlecnt [ABSPRI (w)];
2238 2906
2239 ++idleall; 2907 ++idleall;
2240 ev_start (EV_A_ (W)w, active); 2908 ev_start (EV_A_ (W)w, active);
2241 2909
2242 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);
2243 idles [ABSPRI (w)][active - 1] = w; 2911 idles [ABSPRI (w)][active - 1] = w;
2244 } 2912 }
2913
2914 EV_FREQUENT_CHECK;
2245} 2915}
2246 2916
2247void 2917void
2248ev_idle_stop (EV_P_ ev_idle *w) 2918ev_idle_stop (EV_P_ ev_idle *w)
2249{ 2919{
2250 clear_pending (EV_A_ (W)w); 2920 clear_pending (EV_A_ (W)w);
2251 if (expect_false (!ev_is_active (w))) 2921 if (expect_false (!ev_is_active (w)))
2252 return; 2922 return;
2253 2923
2924 EV_FREQUENT_CHECK;
2925
2254 { 2926 {
2255 int active = ((W)w)->active; 2927 int active = ev_active (w);
2256 2928
2257 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2929 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2258 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2930 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2259 2931
2260 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2261 --idleall; 2933 --idleall;
2262 } 2934 }
2935
2936 EV_FREQUENT_CHECK;
2263} 2937}
2264#endif 2938#endif
2265 2939
2266void 2940void
2267ev_prepare_start (EV_P_ ev_prepare *w) 2941ev_prepare_start (EV_P_ ev_prepare *w)
2268{ 2942{
2269 if (expect_false (ev_is_active (w))) 2943 if (expect_false (ev_is_active (w)))
2270 return; 2944 return;
2945
2946 EV_FREQUENT_CHECK;
2271 2947
2272 ev_start (EV_A_ (W)w, ++preparecnt); 2948 ev_start (EV_A_ (W)w, ++preparecnt);
2273 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2949 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2274 prepares [preparecnt - 1] = w; 2950 prepares [preparecnt - 1] = w;
2951
2952 EV_FREQUENT_CHECK;
2275} 2953}
2276 2954
2277void 2955void
2278ev_prepare_stop (EV_P_ ev_prepare *w) 2956ev_prepare_stop (EV_P_ ev_prepare *w)
2279{ 2957{
2280 clear_pending (EV_A_ (W)w); 2958 clear_pending (EV_A_ (W)w);
2281 if (expect_false (!ev_is_active (w))) 2959 if (expect_false (!ev_is_active (w)))
2282 return; 2960 return;
2283 2961
2962 EV_FREQUENT_CHECK;
2963
2284 { 2964 {
2285 int active = ((W)w)->active; 2965 int active = ev_active (w);
2966
2286 prepares [active - 1] = prepares [--preparecnt]; 2967 prepares [active - 1] = prepares [--preparecnt];
2287 ((W)prepares [active - 1])->active = active; 2968 ev_active (prepares [active - 1]) = active;
2288 } 2969 }
2289 2970
2290 ev_stop (EV_A_ (W)w); 2971 ev_stop (EV_A_ (W)w);
2972
2973 EV_FREQUENT_CHECK;
2291} 2974}
2292 2975
2293void 2976void
2294ev_check_start (EV_P_ ev_check *w) 2977ev_check_start (EV_P_ ev_check *w)
2295{ 2978{
2296 if (expect_false (ev_is_active (w))) 2979 if (expect_false (ev_is_active (w)))
2297 return; 2980 return;
2981
2982 EV_FREQUENT_CHECK;
2298 2983
2299 ev_start (EV_A_ (W)w, ++checkcnt); 2984 ev_start (EV_A_ (W)w, ++checkcnt);
2300 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2985 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2301 checks [checkcnt - 1] = w; 2986 checks [checkcnt - 1] = w;
2987
2988 EV_FREQUENT_CHECK;
2302} 2989}
2303 2990
2304void 2991void
2305ev_check_stop (EV_P_ ev_check *w) 2992ev_check_stop (EV_P_ ev_check *w)
2306{ 2993{
2307 clear_pending (EV_A_ (W)w); 2994 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w))) 2995 if (expect_false (!ev_is_active (w)))
2309 return; 2996 return;
2310 2997
2998 EV_FREQUENT_CHECK;
2999
2311 { 3000 {
2312 int active = ((W)w)->active; 3001 int active = ev_active (w);
3002
2313 checks [active - 1] = checks [--checkcnt]; 3003 checks [active - 1] = checks [--checkcnt];
2314 ((W)checks [active - 1])->active = active; 3004 ev_active (checks [active - 1]) = active;
2315 } 3005 }
2316 3006
2317 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
2318} 3010}
2319 3011
2320#if EV_EMBED_ENABLE 3012#if EV_EMBED_ENABLE
2321void noinline 3013void noinline
2322ev_embed_sweep (EV_P_ ev_embed *w) 3014ev_embed_sweep (EV_P_ ev_embed *w)
… …
2349 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3041 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2350 } 3042 }
2351 } 3043 }
2352} 3044}
2353 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
2354#if 0 3063#if 0
2355static void 3064static void
2356embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3065embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2357{ 3066{
2358 ev_idle_stop (EV_A_ idle); 3067 ev_idle_stop (EV_A_ idle);
… …
2365 if (expect_false (ev_is_active (w))) 3074 if (expect_false (ev_is_active (w)))
2366 return; 3075 return;
2367 3076
2368 { 3077 {
2369 struct ev_loop *loop = w->other; 3078 struct ev_loop *loop = w->other;
2370 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 ()));
2371 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);
2372 } 3081 }
3082
3083 EV_FREQUENT_CHECK;
2373 3084
2374 ev_set_priority (&w->io, ev_priority (w)); 3085 ev_set_priority (&w->io, ev_priority (w));
2375 ev_io_start (EV_A_ &w->io); 3086 ev_io_start (EV_A_ &w->io);
2376 3087
2377 ev_prepare_init (&w->prepare, embed_prepare_cb); 3088 ev_prepare_init (&w->prepare, embed_prepare_cb);
2378 ev_set_priority (&w->prepare, EV_MINPRI); 3089 ev_set_priority (&w->prepare, EV_MINPRI);
2379 ev_prepare_start (EV_A_ &w->prepare); 3090 ev_prepare_start (EV_A_ &w->prepare);
2380 3091
3092 ev_fork_init (&w->fork, embed_fork_cb);
3093 ev_fork_start (EV_A_ &w->fork);
3094
2381 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3095 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382 3096
2383 ev_start (EV_A_ (W)w, 1); 3097 ev_start (EV_A_ (W)w, 1);
3098
3099 EV_FREQUENT_CHECK;
2384} 3100}
2385 3101
2386void 3102void
2387ev_embed_stop (EV_P_ ev_embed *w) 3103ev_embed_stop (EV_P_ ev_embed *w)
2388{ 3104{
2389 clear_pending (EV_A_ (W)w); 3105 clear_pending (EV_A_ (W)w);
2390 if (expect_false (!ev_is_active (w))) 3106 if (expect_false (!ev_is_active (w)))
2391 return; 3107 return;
2392 3108
3109 EV_FREQUENT_CHECK;
3110
2393 ev_io_stop (EV_A_ &w->io); 3111 ev_io_stop (EV_A_ &w->io);
2394 ev_prepare_stop (EV_A_ &w->prepare); 3112 ev_prepare_stop (EV_A_ &w->prepare);
3113 ev_fork_stop (EV_A_ &w->fork);
2395 3114
2396 ev_stop (EV_A_ (W)w); 3115 EV_FREQUENT_CHECK;
2397} 3116}
2398#endif 3117#endif
2399 3118
2400#if EV_FORK_ENABLE 3119#if EV_FORK_ENABLE
2401void 3120void
2402ev_fork_start (EV_P_ ev_fork *w) 3121ev_fork_start (EV_P_ ev_fork *w)
2403{ 3122{
2404 if (expect_false (ev_is_active (w))) 3123 if (expect_false (ev_is_active (w)))
2405 return; 3124 return;
3125
3126 EV_FREQUENT_CHECK;
2406 3127
2407 ev_start (EV_A_ (W)w, ++forkcnt); 3128 ev_start (EV_A_ (W)w, ++forkcnt);
2408 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3129 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2409 forks [forkcnt - 1] = w; 3130 forks [forkcnt - 1] = w;
3131
3132 EV_FREQUENT_CHECK;
2410} 3133}
2411 3134
2412void 3135void
2413ev_fork_stop (EV_P_ ev_fork *w) 3136ev_fork_stop (EV_P_ ev_fork *w)
2414{ 3137{
2415 clear_pending (EV_A_ (W)w); 3138 clear_pending (EV_A_ (W)w);
2416 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2417 return; 3140 return;
2418 3141
3142 EV_FREQUENT_CHECK;
3143
2419 { 3144 {
2420 int active = ((W)w)->active; 3145 int active = ev_active (w);
3146
2421 forks [active - 1] = forks [--forkcnt]; 3147 forks [active - 1] = forks [--forkcnt];
2422 ((W)forks [active - 1])->active = active; 3148 ev_active (forks [active - 1]) = active;
2423 } 3149 }
2424 3150
2425 ev_stop (EV_A_ (W)w); 3151 ev_stop (EV_A_ (W)w);
3152
3153 EV_FREQUENT_CHECK;
2426} 3154}
2427#endif 3155#endif
2428 3156
2429#if EV_ASYNC_ENABLE 3157#if EV_ASYNC_ENABLE
2430void 3158void
… …
2432{ 3160{
2433 if (expect_false (ev_is_active (w))) 3161 if (expect_false (ev_is_active (w)))
2434 return; 3162 return;
2435 3163
2436 evpipe_init (EV_A); 3164 evpipe_init (EV_A);
3165
3166 EV_FREQUENT_CHECK;
2437 3167
2438 ev_start (EV_A_ (W)w, ++asynccnt); 3168 ev_start (EV_A_ (W)w, ++asynccnt);
2439 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3169 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440 asyncs [asynccnt - 1] = w; 3170 asyncs [asynccnt - 1] = w;
3171
3172 EV_FREQUENT_CHECK;
2441} 3173}
2442 3174
2443void 3175void
2444ev_async_stop (EV_P_ ev_async *w) 3176ev_async_stop (EV_P_ ev_async *w)
2445{ 3177{
2446 clear_pending (EV_A_ (W)w); 3178 clear_pending (EV_A_ (W)w);
2447 if (expect_false (!ev_is_active (w))) 3179 if (expect_false (!ev_is_active (w)))
2448 return; 3180 return;
2449 3181
3182 EV_FREQUENT_CHECK;
3183
2450 { 3184 {
2451 int active = ((W)w)->active; 3185 int active = ev_active (w);
3186
2452 asyncs [active - 1] = asyncs [--asynccnt]; 3187 asyncs [active - 1] = asyncs [--asynccnt];
2453 ((W)asyncs [active - 1])->active = active; 3188 ev_active (asyncs [active - 1]) = active;
2454 } 3189 }
2455 3190
2456 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
3192
3193 EV_FREQUENT_CHECK;
2457} 3194}
2458 3195
2459void 3196void
2460ev_async_send (EV_P_ ev_async *w) 3197ev_async_send (EV_P_ ev_async *w)
2461{ 3198{
2462 w->sent = 1; 3199 w->sent = 1;
2463 evpipe_write (EV_A_ 0, 1); 3200 evpipe_write (EV_A_ &gotasync);
2464} 3201}
2465#endif 3202#endif
2466 3203
2467/*****************************************************************************/ 3204/*****************************************************************************/
2468 3205
… …
2478once_cb (EV_P_ struct ev_once *once, int revents) 3215once_cb (EV_P_ struct ev_once *once, int revents)
2479{ 3216{
2480 void (*cb)(int revents, void *arg) = once->cb; 3217 void (*cb)(int revents, void *arg) = once->cb;
2481 void *arg = once->arg; 3218 void *arg = once->arg;
2482 3219
2483 ev_io_stop (EV_A_ &once->io); 3220 ev_io_stop (EV_A_ &once->io);
2484 ev_timer_stop (EV_A_ &once->to); 3221 ev_timer_stop (EV_A_ &once->to);
2485 ev_free (once); 3222 ev_free (once);
2486 3223
2487 cb (revents, arg); 3224 cb (revents, arg);
2488} 3225}
2489 3226
2490static void 3227static void
2491once_cb_io (EV_P_ ev_io *w, int revents) 3228once_cb_io (EV_P_ ev_io *w, int revents)
2492{ 3229{
2493 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));
2494} 3233}
2495 3234
2496static void 3235static void
2497once_cb_to (EV_P_ ev_timer *w, int revents) 3236once_cb_to (EV_P_ ev_timer *w, int revents)
2498{ 3237{
2499 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));
2500} 3241}
2501 3242
2502void 3243void
2503ev_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)
2504{ 3245{
… …
2526 ev_timer_set (&once->to, timeout, 0.); 3267 ev_timer_set (&once->to, timeout, 0.);
2527 ev_timer_start (EV_A_ &once->to); 3268 ev_timer_start (EV_A_ &once->to);
2528 } 3269 }
2529} 3270}
2530 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
2531#if EV_MULTIPLICITY 3380#if EV_MULTIPLICITY
2532 #include "ev_wrap.h" 3381 #include "ev_wrap.h"
2533#endif 3382#endif
2534 3383
2535#ifdef __cplusplus 3384#ifdef __cplusplus

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