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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 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 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
… …
51# ifndef EV_USE_MONOTONIC 59# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 60# define EV_USE_MONOTONIC 0
53# endif 61# endif
54# ifndef EV_USE_REALTIME 62# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 63# define EV_USE_REALTIME 0
64# endif
65# endif
66
67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
56# endif 72# endif
57# endif 73# endif
58 74
59# ifndef EV_USE_SELECT 75# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 76# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 110# else
95# define EV_USE_PORT 0 111# define EV_USE_PORT 0
96# endif 112# endif
97# endif 113# endif
98 114
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1
118# else
119# define EV_USE_INOTIFY 0
120# endif
121# endif
122
99#endif 123#endif
100 124
101#include <math.h> 125#include <math.h>
102#include <stdlib.h> 126#include <stdlib.h>
103#include <fcntl.h> 127#include <fcntl.h>
… …
109#include <errno.h> 133#include <errno.h>
110#include <sys/types.h> 134#include <sys/types.h>
111#include <time.h> 135#include <time.h>
112 136
113#include <signal.h> 137#include <signal.h>
138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
114 144
115#ifndef _WIN32 145#ifndef _WIN32
116# include <sys/time.h> 146# include <sys/time.h>
117# include <sys/wait.h> 147# include <sys/wait.h>
118# include <unistd.h> 148# include <unistd.h>
… …
132 162
133#ifndef EV_USE_REALTIME 163#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 164# define EV_USE_REALTIME 0
135#endif 165#endif
136 166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
137#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
139#endif 173#endif
140 174
141#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
… …
156 190
157#ifndef EV_USE_PORT 191#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 192# define EV_USE_PORT 0
159#endif 193#endif
160 194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
213#endif
214
161/**/ 215/**/
162 216
163#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 218# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 219# define EV_USE_MONOTONIC 0
… …
168#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
171#endif 225#endif
172 226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
173#if EV_SELECT_IS_WINSOCKET 242#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 243# include <winsock.h>
175#endif 244#endif
176 245
177/**/ 246/**/
178 247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 261
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 262#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 264# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 265#else
201# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
205#endif 271#endif
206 272
207#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
276
277#if EV_MINIMAL
278# define inline_speed static noinline
279#else
280# define inline_speed static inline
281#endif
209 282
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 285
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 287#define EMPTY2(a,b) /* used to suppress some warnings */
215 288
216typedef ev_watcher *W; 289typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
219 292
293#if EV_USE_MONOTONIC
294/* 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 */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
221 298
222#ifdef _WIN32 299#ifdef _WIN32
223# include "ev_win32.c" 300# include "ev_win32.c"
224#endif 301#endif
225 302
… …
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 332{
256 alloc = cb; 333 alloc = cb;
257} 334}
258 335
259static void * 336inline_speed void *
260ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
261{ 338{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263 340
264 if (!ptr && size) 341 if (!ptr && size)
… …
288typedef struct 365typedef struct
289{ 366{
290 W w; 367 W w;
291 int events; 368 int events;
292} ANPENDING; 369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
293 377
294#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
295 379
296 struct ev_loop 380 struct ev_loop
297 { 381 {
… …
354{ 438{
355 return ev_rt_now; 439 return ev_rt_now;
356} 440}
357#endif 441#endif
358 442
359#define array_roundsize(type,n) (((n) | 4) & ~3) 443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
447 {
448#if EV_USE_NANOSLEEP
449 struct timespec ts;
450
451 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0);
455#elif defined(_WIN32)
456 Sleep (delay * 1e3);
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
467
468/*****************************************************************************/
469
470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
360 497
361#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
363 { \ 500 { \
364 int newcnt = cur; \ 501 int ocur_ = (cur); \
365 do \ 502 (base) = (type *)array_realloc \
366 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 505 }
375 506
507#if 0
376#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 510 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 514 }
515#endif
383 516
384#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386 519
387/*****************************************************************************/ 520/*****************************************************************************/
388 521
389void noinline 522void noinline
390ev_feed_event (EV_P_ void *w, int revents) 523ev_feed_event (EV_P_ void *w, int revents)
391{ 524{
392 W w_ = (W)w; 525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
393 527
394 if (expect_false (w_->pending)) 528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
395 { 531 {
532 w_->pending = ++pendingcnt [pri];
533 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 535 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 536 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 537}
405 538
406void inline_size 539void inline_speed
407queue_events (EV_P_ W *events, int eventcnt, int type) 540queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 541{
409 int i; 542 int i;
410 543
411 for (i = 0; i < eventcnt; ++i) 544 for (i = 0; i < eventcnt; ++i)
… …
443} 576}
444 577
445void 578void
446ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 580{
581 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
449} 583}
450 584
451void inline_size 585void inline_size
452fd_reify (EV_P) 586fd_reify (EV_P)
453{ 587{
… …
457 { 591 {
458 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
460 ev_io *w; 594 ev_io *w;
461 595
462 int events = 0; 596 unsigned char events = 0;
463 597
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465 events |= w->events; 599 events |= (unsigned char)w->events;
466 600
467#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
468 if (events) 602 if (events)
469 { 603 {
470 unsigned long argp; 604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
471 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473 } 611 }
474#endif 612#endif
475 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
476 anfd->reify = 0; 618 anfd->reify = 0;
477
478 backend_modify (EV_A_ fd, anfd->events, events);
479 anfd->events = events; 619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
480 } 624 }
481 625
482 fdchangecnt = 0; 626 fdchangecnt = 0;
483} 627}
484 628
485void inline_size 629void inline_size
486fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
487{ 631{
488 if (expect_false (anfds [fd].reify)) 632 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
492 634
635 if (expect_true (!reify))
636 {
493 ++fdchangecnt; 637 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
496} 641}
497 642
498void inline_speed 643void inline_speed
499fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
500{ 645{
… …
547static void noinline 692static void noinline
548fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
549{ 694{
550 int fd; 695 int fd;
551 696
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 698 if (anfds [fd].events)
555 { 699 {
556 anfds [fd].events = 0; 700 anfds [fd].events = 0;
557 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
558 } 702 }
559} 703}
560 704
561/*****************************************************************************/ 705/*****************************************************************************/
562 706
563void inline_speed 707void inline_speed
564upheap (WT *heap, int k) 708upheap (WT *heap, int k)
565{ 709{
566 WT w = heap [k]; 710 WT w = heap [k];
567 711
568 while (k && heap [k >> 1]->at > w->at) 712 while (k)
569 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
570 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
571 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
572 k >>= 1; 721 k = p;
573 } 722 }
574 723
575 heap [k] = w; 724 heap [k] = w;
576 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
577
578} 726}
579 727
580void inline_speed 728void inline_speed
581downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
582{ 730{
583 WT w = heap [k]; 731 WT w = heap [k];
584 732
585 while (k < (N >> 1)) 733 for (;;)
586 { 734 {
587 int j = k << 1; 735 int c = (k << 1) + 1;
588 736
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
590 ++j;
591
592 if (w->at <= heap [j]->at)
593 break; 738 break;
594 739
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
595 heap [k] = heap [j]; 746 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
597 k = j; 749 k = c;
598 } 750 }
599 751
600 heap [k] = w; 752 heap [k] = w;
601 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
602} 754}
… …
611/*****************************************************************************/ 763/*****************************************************************************/
612 764
613typedef struct 765typedef struct
614{ 766{
615 WL head; 767 WL head;
616 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
617} ANSIG; 769} ANSIG;
618 770
619static ANSIG *signals; 771static ANSIG *signals;
620static int signalmax; 772static int signalmax;
621 773
622static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625 775
626void inline_size 776void inline_size
627signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
628{ 778{
629 while (count--) 779 while (count--)
… …
633 783
634 ++base; 784 ++base;
635 } 785 }
636} 786}
637 787
638static void 788/*****************************************************************************/
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644 789
645 signals [signum - 1].gotsig = 1;
646
647 if (!gotsig)
648 {
649 int old_errno = errno;
650 gotsig = 1;
651 write (sigpipe [1], &signum, 1);
652 errno = old_errno;
653 }
654}
655
656void noinline
657ev_feed_signal_event (EV_P_ int signum)
658{
659 WL w;
660
661#if EV_MULTIPLICITY
662 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663#endif
664
665 --signum;
666
667 if (signum < 0 || signum >= signalmax)
668 return;
669
670 signals [signum].gotsig = 0;
671
672 for (w = signals [signum].head; w; w = w->next)
673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674}
675
676static void
677sigcb (EV_P_ ev_io *iow, int revents)
678{
679 int signum;
680
681 read (sigpipe [0], &revents, 1);
682 gotsig = 0;
683
684 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1);
687}
688
689void inline_size 790void inline_speed
690fd_intern (int fd) 791fd_intern (int fd)
691{ 792{
692#ifdef _WIN32 793#ifdef _WIN32
693 int arg = 1; 794 int arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
697 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 799#endif
699} 800}
700 801
701static void noinline 802static void noinline
702siginit (EV_P) 803evpipe_init (EV_P)
703{ 804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
704 fd_intern (sigpipe [0]); 810 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 811 fd_intern (evpipe [1]);
706 812
707 ev_io_set (&sigev, sigpipe [0], EV_READ); 813 ev_io_set (&pipeev, evpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 814 ev_io_start (EV_A_ &pipeev);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 815 ev_unref (EV_A); /* watcher should not keep loop alive */
816
817 /* in case we received the signal before we had the chance of installing a handler */
818 ev_feed_event (EV_A_ &pipeev, 0);
819 }
820}
821
822void inline_size
823evpipe_write (EV_P_ int sig, int async)
824{
825 if (!(gotasync || gotsig))
826 {
827 int old_errno = errno; /* save errno becaue write might clobber it */
828
829 if (sig) gotsig = 1;
830 if (async) gotasync = 1;
831
832 write (evpipe [1], &old_errno, 1);
833
834 errno = old_errno;
835 }
836}
837
838static void
839pipecb (EV_P_ ev_io *iow, int revents)
840{
841 {
842 int dummy;
843 read (evpipe [0], &dummy, 1);
844 }
845
846 if (gotsig && ev_is_default_loop (EV_A))
847 {
848 int signum;
849 gotsig = 0;
850
851 for (signum = signalmax; signum--; )
852 if (signals [signum].gotsig)
853 ev_feed_signal_event (EV_A_ signum + 1);
854 }
855
856#if EV_ASYNC_ENABLE
857 if (gotasync)
858 {
859 int i;
860 gotasync = 0;
861
862 for (i = asynccnt; i--; )
863 if (asyncs [i]->sent)
864 {
865 asyncs [i]->sent = 0;
866 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
867 }
868 }
869#endif
710} 870}
711 871
712/*****************************************************************************/ 872/*****************************************************************************/
713 873
874static void
875sighandler (int signum)
876{
877#if EV_MULTIPLICITY
878 struct ev_loop *loop = &default_loop_struct;
879#endif
880
881#if _WIN32
882 signal (signum, sighandler);
883#endif
884
885 signals [signum - 1].gotsig = 1;
886 evpipe_write (EV_A_ 1, 0);
887}
888
889void noinline
890ev_feed_signal_event (EV_P_ int signum)
891{
892 WL w;
893
894#if EV_MULTIPLICITY
895 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
896#endif
897
898 --signum;
899
900 if (signum < 0 || signum >= signalmax)
901 return;
902
903 signals [signum].gotsig = 0;
904
905 for (w = signals [signum].head; w; w = w->next)
906 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
907}
908
909/*****************************************************************************/
910
714static ev_child *childs [PID_HASHSIZE]; 911static WL childs [EV_PID_HASHSIZE];
715 912
716#ifndef _WIN32 913#ifndef _WIN32
717 914
718static ev_signal childev; 915static ev_signal childev;
916
917#ifndef WIFCONTINUED
918# define WIFCONTINUED(status) 0
919#endif
920
921void inline_speed
922child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
923{
924 ev_child *w;
925 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
926
927 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
928 {
929 if ((w->pid == pid || !w->pid)
930 && (!traced || (w->flags & 1)))
931 {
932 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
933 w->rpid = pid;
934 w->rstatus = status;
935 ev_feed_event (EV_A_ (W)w, EV_CHILD);
936 }
937 }
938}
719 939
720#ifndef WCONTINUED 940#ifndef WCONTINUED
721# define WCONTINUED 0 941# define WCONTINUED 0
722#endif 942#endif
723 943
724void inline_speed
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{
727 ev_child *w;
728
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid)
731 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid;
734 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 }
737}
738
739static void 944static void
740childcb (EV_P_ ev_signal *sw, int revents) 945childcb (EV_P_ ev_signal *sw, int revents)
741{ 946{
742 int pid, status; 947 int pid, status;
743 948
949 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 950 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 951 if (!WCONTINUED
952 || errno != EINVAL
953 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
954 return;
955
746 /* make sure we are called again until all childs have been reaped */ 956 /* make sure we are called again until all childs have been reaped */
747 /* we need to do it this way so that the callback gets called before we continue */ 957 /* we need to do it this way so that the callback gets called before we continue */
748 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 958 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 959
750 child_reap (EV_A_ sw, pid, pid, status); 960 child_reap (EV_A_ sw, pid, pid, status);
961 if (EV_PID_HASHSIZE > 1)
751 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 962 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 963}
754 964
755#endif 965#endif
756 966
757/*****************************************************************************/ 967/*****************************************************************************/
… …
829} 1039}
830 1040
831unsigned int 1041unsigned int
832ev_embeddable_backends (void) 1042ev_embeddable_backends (void)
833{ 1043{
834 return EVBACKEND_EPOLL 1044 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
835 | EVBACKEND_KQUEUE 1045
836 | EVBACKEND_PORT; 1046 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1047 /* please fix it and tell me how to detect the fix */
1048 flags &= ~EVBACKEND_EPOLL;
1049
1050 return flags;
837} 1051}
838 1052
839unsigned int 1053unsigned int
840ev_backend (EV_P) 1054ev_backend (EV_P)
841{ 1055{
842 return backend; 1056 return backend;
843} 1057}
844 1058
845static void 1059unsigned int
1060ev_loop_count (EV_P)
1061{
1062 return loop_count;
1063}
1064
1065void
1066ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 io_blocktime = interval;
1069}
1070
1071void
1072ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1073{
1074 timeout_blocktime = interval;
1075}
1076
1077static void noinline
846loop_init (EV_P_ unsigned int flags) 1078loop_init (EV_P_ unsigned int flags)
847{ 1079{
848 if (!backend) 1080 if (!backend)
849 { 1081 {
850#if EV_USE_MONOTONIC 1082#if EV_USE_MONOTONIC
… …
853 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1085 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
854 have_monotonic = 1; 1086 have_monotonic = 1;
855 } 1087 }
856#endif 1088#endif
857 1089
858 ev_rt_now = ev_time (); 1090 ev_rt_now = ev_time ();
859 mn_now = get_clock (); 1091 mn_now = get_clock ();
860 now_floor = mn_now; 1092 now_floor = mn_now;
861 rtmn_diff = ev_rt_now - mn_now; 1093 rtmn_diff = ev_rt_now - mn_now;
1094
1095 io_blocktime = 0.;
1096 timeout_blocktime = 0.;
1097 backend = 0;
1098 backend_fd = -1;
1099 gotasync = 0;
1100#if EV_USE_INOTIFY
1101 fs_fd = -2;
1102#endif
1103
1104 /* pid check not overridable via env */
1105#ifndef _WIN32
1106 if (flags & EVFLAG_FORKCHECK)
1107 curpid = getpid ();
1108#endif
862 1109
863 if (!(flags & EVFLAG_NOENV) 1110 if (!(flags & EVFLAG_NOENV)
864 && !enable_secure () 1111 && !enable_secure ()
865 && getenv ("LIBEV_FLAGS")) 1112 && getenv ("LIBEV_FLAGS"))
866 flags = atoi (getenv ("LIBEV_FLAGS")); 1113 flags = atoi (getenv ("LIBEV_FLAGS"));
867 1114
868 if (!(flags & 0x0000ffffUL)) 1115 if (!(flags & 0x0000ffffUL))
869 flags |= ev_recommended_backends (); 1116 flags |= ev_recommended_backends ();
870 1117
871 backend = 0;
872#if EV_USE_PORT 1118#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1119 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 1120#endif
875#if EV_USE_KQUEUE 1121#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1122 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
883#endif 1129#endif
884#if EV_USE_SELECT 1130#if EV_USE_SELECT
885 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1131 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
886#endif 1132#endif
887 1133
888 ev_init (&sigev, sigcb); 1134 ev_init (&pipeev, pipecb);
889 ev_set_priority (&sigev, EV_MAXPRI); 1135 ev_set_priority (&pipeev, EV_MAXPRI);
890 } 1136 }
891} 1137}
892 1138
893static void 1139static void noinline
894loop_destroy (EV_P) 1140loop_destroy (EV_P)
895{ 1141{
896 int i; 1142 int i;
1143
1144 if (ev_is_active (&pipeev))
1145 {
1146 ev_ref (EV_A); /* signal watcher */
1147 ev_io_stop (EV_A_ &pipeev);
1148
1149 close (evpipe [0]); evpipe [0] = 0;
1150 close (evpipe [1]); evpipe [1] = 0;
1151 }
1152
1153#if EV_USE_INOTIFY
1154 if (fs_fd >= 0)
1155 close (fs_fd);
1156#endif
1157
1158 if (backend_fd >= 0)
1159 close (backend_fd);
897 1160
898#if EV_USE_PORT 1161#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 1163#endif
901#if EV_USE_KQUEUE 1164#if EV_USE_KQUEUE
… …
910#if EV_USE_SELECT 1173#if EV_USE_SELECT
911 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1174 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912#endif 1175#endif
913 1176
914 for (i = NUMPRI; i--; ) 1177 for (i = NUMPRI; i--; )
1178 {
915 array_free (pending, [i]); 1179 array_free (pending, [i]);
1180#if EV_IDLE_ENABLE
1181 array_free (idle, [i]);
1182#endif
1183 }
1184
1185 ev_free (anfds); anfdmax = 0;
916 1186
917 /* have to use the microsoft-never-gets-it-right macro */ 1187 /* have to use the microsoft-never-gets-it-right macro */
918 array_free (fdchange, EMPTY0); 1188 array_free (fdchange, EMPTY);
919 array_free (timer, EMPTY0); 1189 array_free (timer, EMPTY);
920#if EV_PERIODIC_ENABLE 1190#if EV_PERIODIC_ENABLE
921 array_free (periodic, EMPTY0); 1191 array_free (periodic, EMPTY);
922#endif 1192#endif
1193#if EV_FORK_ENABLE
923 array_free (idle, EMPTY0); 1194 array_free (fork, EMPTY);
1195#endif
924 array_free (prepare, EMPTY0); 1196 array_free (prepare, EMPTY);
925 array_free (check, EMPTY0); 1197 array_free (check, EMPTY);
1198#if EV_ASYNC_ENABLE
1199 array_free (async, EMPTY);
1200#endif
926 1201
927 backend = 0; 1202 backend = 0;
928} 1203}
929 1204
930static void 1205void inline_size infy_fork (EV_P);
1206
1207void inline_size
931loop_fork (EV_P) 1208loop_fork (EV_P)
932{ 1209{
933#if EV_USE_PORT 1210#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1211 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 1212#endif
… …
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1214 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1215#endif
939#if EV_USE_EPOLL 1216#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1217 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
941#endif 1218#endif
1219#if EV_USE_INOTIFY
1220 infy_fork (EV_A);
1221#endif
942 1222
943 if (ev_is_active (&sigev)) 1223 if (ev_is_active (&pipeev))
944 { 1224 {
945 /* default loop */ 1225 /* this "locks" the handlers against writing to the pipe */
1226 gotsig = gotasync = 1;
946 1227
947 ev_ref (EV_A); 1228 ev_ref (EV_A);
948 ev_io_stop (EV_A_ &sigev); 1229 ev_io_stop (EV_A_ &pipeev);
949 close (sigpipe [0]); 1230 close (evpipe [0]);
950 close (sigpipe [1]); 1231 close (evpipe [1]);
951 1232
952 while (pipe (sigpipe))
953 syserr ("(libev) error creating pipe");
954
955 siginit (EV_A); 1233 evpipe_init (EV_A);
1234 /* now iterate over everything, in case we missed something */
1235 pipecb (EV_A_ &pipeev, EV_READ);
956 } 1236 }
957 1237
958 postfork = 0; 1238 postfork = 0;
959} 1239}
960 1240
… …
982} 1262}
983 1263
984void 1264void
985ev_loop_fork (EV_P) 1265ev_loop_fork (EV_P)
986{ 1266{
987 postfork = 1; 1267 postfork = 1; /* must be in line with ev_default_fork */
988} 1268}
989 1269
990#endif 1270#endif
991 1271
992#if EV_MULTIPLICITY 1272#if EV_MULTIPLICITY
… …
995#else 1275#else
996int 1276int
997ev_default_loop (unsigned int flags) 1277ev_default_loop (unsigned int flags)
998#endif 1278#endif
999{ 1279{
1000 if (sigpipe [0] == sigpipe [1])
1001 if (pipe (sigpipe))
1002 return 0;
1003
1004 if (!ev_default_loop_ptr) 1280 if (!ev_default_loop_ptr)
1005 { 1281 {
1006#if EV_MULTIPLICITY 1282#if EV_MULTIPLICITY
1007 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1283 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1008#else 1284#else
… …
1011 1287
1012 loop_init (EV_A_ flags); 1288 loop_init (EV_A_ flags);
1013 1289
1014 if (ev_backend (EV_A)) 1290 if (ev_backend (EV_A))
1015 { 1291 {
1016 siginit (EV_A);
1017
1018#ifndef _WIN32 1292#ifndef _WIN32
1019 ev_signal_init (&childev, childcb, SIGCHLD); 1293 ev_signal_init (&childev, childcb, SIGCHLD);
1020 ev_set_priority (&childev, EV_MAXPRI); 1294 ev_set_priority (&childev, EV_MAXPRI);
1021 ev_signal_start (EV_A_ &childev); 1295 ev_signal_start (EV_A_ &childev);
1022 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1039#ifndef _WIN32 1313#ifndef _WIN32
1040 ev_ref (EV_A); /* child watcher */ 1314 ev_ref (EV_A); /* child watcher */
1041 ev_signal_stop (EV_A_ &childev); 1315 ev_signal_stop (EV_A_ &childev);
1042#endif 1316#endif
1043 1317
1044 ev_ref (EV_A); /* signal watcher */
1045 ev_io_stop (EV_A_ &sigev);
1046
1047 close (sigpipe [0]); sigpipe [0] = 0;
1048 close (sigpipe [1]); sigpipe [1] = 0;
1049
1050 loop_destroy (EV_A); 1318 loop_destroy (EV_A);
1051} 1319}
1052 1320
1053void 1321void
1054ev_default_fork (void) 1322ev_default_fork (void)
… …
1056#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1057 struct ev_loop *loop = ev_default_loop_ptr; 1325 struct ev_loop *loop = ev_default_loop_ptr;
1058#endif 1326#endif
1059 1327
1060 if (backend) 1328 if (backend)
1061 postfork = 1; 1329 postfork = 1; /* must be in line with ev_loop_fork */
1062} 1330}
1063 1331
1064/*****************************************************************************/ 1332/*****************************************************************************/
1065 1333
1066int inline_size 1334void
1067any_pending (EV_P) 1335ev_invoke (EV_P_ void *w, int revents)
1068{ 1336{
1069 int pri; 1337 EV_CB_INVOKE ((W)w, revents);
1070
1071 for (pri = NUMPRI; pri--; )
1072 if (pendingcnt [pri])
1073 return 1;
1074
1075 return 0;
1076} 1338}
1077 1339
1078void inline_speed 1340void inline_speed
1079call_pending (EV_P) 1341call_pending (EV_P)
1080{ 1342{
… …
1085 { 1347 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1348 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1349
1088 if (expect_true (p->w)) 1350 if (expect_true (p->w))
1089 { 1351 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1352 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1091 1353
1092 p->w->pending = 0; 1354 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1355 EV_CB_INVOKE (p->w, p->events);
1094 } 1356 }
1095 } 1357 }
… …
1098void inline_size 1360void inline_size
1099timers_reify (EV_P) 1361timers_reify (EV_P)
1100{ 1362{
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1363 while (timercnt && ((WT)timers [0])->at <= mn_now)
1102 { 1364 {
1103 ev_timer *w = timers [0]; 1365 ev_timer *w = (ev_timer *)timers [0];
1104 1366
1105 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1367 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106 1368
1107 /* first reschedule or stop timer */ 1369 /* first reschedule or stop timer */
1108 if (w->repeat) 1370 if (w->repeat)
1109 { 1371 {
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1372 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1111 1373
1112 ((WT)w)->at += w->repeat; 1374 ((WT)w)->at += w->repeat;
1113 if (((WT)w)->at < mn_now) 1375 if (((WT)w)->at < mn_now)
1114 ((WT)w)->at = mn_now; 1376 ((WT)w)->at = mn_now;
1115 1377
1116 downheap ((WT *)timers, timercnt, 0); 1378 downheap (timers, timercnt, 0);
1117 } 1379 }
1118 else 1380 else
1119 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1381 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120 1382
1121 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1383 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1126void inline_size 1388void inline_size
1127periodics_reify (EV_P) 1389periodics_reify (EV_P)
1128{ 1390{
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1391 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1130 { 1392 {
1131 ev_periodic *w = periodics [0]; 1393 ev_periodic *w = (ev_periodic *)periodics [0];
1132 1394
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1395 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134 1396
1135 /* first reschedule or stop timer */ 1397 /* first reschedule or stop timer */
1136 if (w->reschedule_cb) 1398 if (w->reschedule_cb)
1137 { 1399 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1400 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1139 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1401 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1140 downheap ((WT *)periodics, periodiccnt, 0); 1402 downheap (periodics, periodiccnt, 0);
1141 } 1403 }
1142 else if (w->interval) 1404 else if (w->interval)
1143 { 1405 {
1144 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1406 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1407 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1145 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1408 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1146 downheap ((WT *)periodics, periodiccnt, 0); 1409 downheap (periodics, periodiccnt, 0);
1147 } 1410 }
1148 else 1411 else
1149 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1412 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150 1413
1151 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1414 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1158 int i; 1421 int i;
1159 1422
1160 /* adjust periodics after time jump */ 1423 /* adjust periodics after time jump */
1161 for (i = 0; i < periodiccnt; ++i) 1424 for (i = 0; i < periodiccnt; ++i)
1162 { 1425 {
1163 ev_periodic *w = periodics [i]; 1426 ev_periodic *w = (ev_periodic *)periodics [i];
1164 1427
1165 if (w->reschedule_cb) 1428 if (w->reschedule_cb)
1166 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1429 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1167 else if (w->interval) 1430 else if (w->interval)
1168 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1431 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1169 } 1432 }
1170 1433
1171 /* now rebuild the heap */ 1434 /* now rebuild the heap */
1172 for (i = periodiccnt >> 1; i--; ) 1435 for (i = periodiccnt >> 1; i--; )
1173 downheap ((WT *)periodics, periodiccnt, i); 1436 downheap (periodics, periodiccnt, i);
1174} 1437}
1175#endif 1438#endif
1176 1439
1440#if EV_IDLE_ENABLE
1177int inline_size 1441void inline_size
1178time_update_monotonic (EV_P) 1442idle_reify (EV_P)
1179{ 1443{
1444 if (expect_false (idleall))
1445 {
1446 int pri;
1447
1448 for (pri = NUMPRI; pri--; )
1449 {
1450 if (pendingcnt [pri])
1451 break;
1452
1453 if (idlecnt [pri])
1454 {
1455 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1456 break;
1457 }
1458 }
1459 }
1460}
1461#endif
1462
1463void inline_speed
1464time_update (EV_P_ ev_tstamp max_block)
1465{
1466 int i;
1467
1468#if EV_USE_MONOTONIC
1469 if (expect_true (have_monotonic))
1470 {
1471 ev_tstamp odiff = rtmn_diff;
1472
1180 mn_now = get_clock (); 1473 mn_now = get_clock ();
1181 1474
1475 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1476 /* interpolate in the meantime */
1182 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1477 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183 { 1478 {
1184 ev_rt_now = rtmn_diff + mn_now; 1479 ev_rt_now = rtmn_diff + mn_now;
1185 return 0; 1480 return;
1186 } 1481 }
1187 else 1482
1188 {
1189 now_floor = mn_now; 1483 now_floor = mn_now;
1190 ev_rt_now = ev_time (); 1484 ev_rt_now = ev_time ();
1191 return 1;
1192 }
1193}
1194 1485
1195void inline_size 1486 /* loop a few times, before making important decisions.
1196time_update (EV_P) 1487 * on the choice of "4": one iteration isn't enough,
1197{ 1488 * in case we get preempted during the calls to
1198 int i; 1489 * ev_time and get_clock. a second call is almost guaranteed
1199 1490 * to succeed in that case, though. and looping a few more times
1200#if EV_USE_MONOTONIC 1491 * doesn't hurt either as we only do this on time-jumps or
1201 if (expect_true (have_monotonic)) 1492 * in the unlikely event of having been preempted here.
1202 { 1493 */
1203 if (time_update_monotonic (EV_A)) 1494 for (i = 4; --i; )
1204 { 1495 {
1205 ev_tstamp odiff = rtmn_diff;
1206
1207 /* loop a few times, before making important decisions.
1208 * on the choice of "4": one iteration isn't enough,
1209 * in case we get preempted during the calls to
1210 * ev_time and get_clock. a second call is almost guarenteed
1211 * to succeed in that case, though. and looping a few more times
1212 * doesn't hurt either as we only do this on time-jumps or
1213 * in the unlikely event of getting preempted here.
1214 */
1215 for (i = 4; --i; )
1216 {
1217 rtmn_diff = ev_rt_now - mn_now; 1496 rtmn_diff = ev_rt_now - mn_now;
1218 1497
1219 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1498 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1220 return; /* all is well */ 1499 return; /* all is well */
1221 1500
1222 ev_rt_now = ev_time (); 1501 ev_rt_now = ev_time ();
1223 mn_now = get_clock (); 1502 mn_now = get_clock ();
1224 now_floor = mn_now; 1503 now_floor = mn_now;
1225 } 1504 }
1226 1505
1227# if EV_PERIODIC_ENABLE 1506# if EV_PERIODIC_ENABLE
1228 periodics_reschedule (EV_A); 1507 periodics_reschedule (EV_A);
1229# endif 1508# endif
1230 /* no timer adjustment, as the monotonic clock doesn't jump */ 1509 /* no timer adjustment, as the monotonic clock doesn't jump */
1231 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1510 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232 }
1233 } 1511 }
1234 else 1512 else
1235#endif 1513#endif
1236 { 1514 {
1237 ev_rt_now = ev_time (); 1515 ev_rt_now = ev_time ();
1238 1516
1239 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1517 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1240 { 1518 {
1241#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 1520 periodics_reschedule (EV_A);
1243#endif 1521#endif
1244
1245 /* adjust timers. this is easy, as the offset is the same for all */ 1522 /* adjust timers. this is easy, as the offset is the same for all of them */
1246 for (i = 0; i < timercnt; ++i) 1523 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now; 1524 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 1525 }
1249 1526
1250 mn_now = ev_rt_now; 1527 mn_now = ev_rt_now;
… …
1270{ 1547{
1271 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1548 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1272 ? EVUNLOOP_ONE 1549 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL; 1550 : EVUNLOOP_CANCEL;
1274 1551
1275 while (activecnt) 1552 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1553
1554 do
1276 { 1555 {
1556#ifndef _WIN32
1557 if (expect_false (curpid)) /* penalise the forking check even more */
1558 if (expect_false (getpid () != curpid))
1559 {
1560 curpid = getpid ();
1561 postfork = 1;
1562 }
1563#endif
1564
1565#if EV_FORK_ENABLE
1566 /* we might have forked, so queue fork handlers */
1567 if (expect_false (postfork))
1568 if (forkcnt)
1569 {
1570 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1571 call_pending (EV_A);
1572 }
1573#endif
1574
1277 /* queue check watchers (and execute them) */ 1575 /* queue prepare watchers (and execute them) */
1278 if (expect_false (preparecnt)) 1576 if (expect_false (preparecnt))
1279 { 1577 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1578 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 1579 call_pending (EV_A);
1282 } 1580 }
1283 1581
1582 if (expect_false (!activecnt))
1583 break;
1584
1284 /* we might have forked, so reify kernel state if necessary */ 1585 /* we might have forked, so reify kernel state if necessary */
1285 if (expect_false (postfork)) 1586 if (expect_false (postfork))
1286 loop_fork (EV_A); 1587 loop_fork (EV_A);
1287 1588
1288 /* update fd-related kernel structures */ 1589 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 1590 fd_reify (EV_A);
1290 1591
1291 /* calculate blocking time */ 1592 /* calculate blocking time */
1292 { 1593 {
1293 double block; 1594 ev_tstamp waittime = 0.;
1595 ev_tstamp sleeptime = 0.;
1294 1596
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 1597 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1296 block = 0.; /* do not block at all */
1297 else
1298 { 1598 {
1299 /* update time to cancel out callback processing overhead */ 1599 /* update time to cancel out callback processing overhead */
1300#if EV_USE_MONOTONIC
1301 if (expect_true (have_monotonic))
1302 time_update_monotonic (EV_A); 1600 time_update (EV_A_ 1e100);
1303 else
1304#endif
1305 {
1306 ev_rt_now = ev_time ();
1307 mn_now = ev_rt_now;
1308 }
1309 1601
1310 block = MAX_BLOCKTIME; 1602 waittime = MAX_BLOCKTIME;
1311 1603
1312 if (timercnt) 1604 if (timercnt)
1313 { 1605 {
1314 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1606 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1315 if (block > to) block = to; 1607 if (waittime > to) waittime = to;
1316 } 1608 }
1317 1609
1318#if EV_PERIODIC_ENABLE 1610#if EV_PERIODIC_ENABLE
1319 if (periodiccnt) 1611 if (periodiccnt)
1320 { 1612 {
1321 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1613 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1322 if (block > to) block = to; 1614 if (waittime > to) waittime = to;
1323 } 1615 }
1324#endif 1616#endif
1325 1617
1326 if (expect_false (block < 0.)) block = 0.; 1618 if (expect_false (waittime < timeout_blocktime))
1619 waittime = timeout_blocktime;
1620
1621 sleeptime = waittime - backend_fudge;
1622
1623 if (expect_true (sleeptime > io_blocktime))
1624 sleeptime = io_blocktime;
1625
1626 if (sleeptime)
1627 {
1628 ev_sleep (sleeptime);
1629 waittime -= sleeptime;
1630 }
1327 } 1631 }
1328 1632
1633 ++loop_count;
1329 backend_poll (EV_A_ block); 1634 backend_poll (EV_A_ waittime);
1635
1636 /* update ev_rt_now, do magic */
1637 time_update (EV_A_ waittime + sleeptime);
1330 } 1638 }
1331
1332 /* update ev_rt_now, do magic */
1333 time_update (EV_A);
1334 1639
1335 /* queue pending timers and reschedule them */ 1640 /* queue pending timers and reschedule them */
1336 timers_reify (EV_A); /* relative timers called last */ 1641 timers_reify (EV_A); /* relative timers called last */
1337#if EV_PERIODIC_ENABLE 1642#if EV_PERIODIC_ENABLE
1338 periodics_reify (EV_A); /* absolute timers called first */ 1643 periodics_reify (EV_A); /* absolute timers called first */
1339#endif 1644#endif
1340 1645
1646#if EV_IDLE_ENABLE
1341 /* queue idle watchers unless other events are pending */ 1647 /* queue idle watchers unless other events are pending */
1342 if (idlecnt && !any_pending (EV_A)) 1648 idle_reify (EV_A);
1343 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1649#endif
1344 1650
1345 /* queue check watchers, to be executed first */ 1651 /* queue check watchers, to be executed first */
1346 if (expect_false (checkcnt)) 1652 if (expect_false (checkcnt))
1347 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1348 1654
1349 call_pending (EV_A); 1655 call_pending (EV_A);
1350 1656
1351 if (expect_false (loop_done))
1352 break;
1353 } 1657 }
1658 while (expect_true (activecnt && !loop_done));
1354 1659
1355 if (loop_done == EVUNLOOP_ONE) 1660 if (loop_done == EVUNLOOP_ONE)
1356 loop_done = EVUNLOOP_CANCEL; 1661 loop_done = EVUNLOOP_CANCEL;
1357} 1662}
1358 1663
… …
1385 head = &(*head)->next; 1690 head = &(*head)->next;
1386 } 1691 }
1387} 1692}
1388 1693
1389void inline_speed 1694void inline_speed
1390ev_clear_pending (EV_P_ W w) 1695clear_pending (EV_P_ W w)
1391{ 1696{
1392 if (w->pending) 1697 if (w->pending)
1393 { 1698 {
1394 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1699 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1395 w->pending = 0; 1700 w->pending = 0;
1396 } 1701 }
1397} 1702}
1398 1703
1704int
1705ev_clear_pending (EV_P_ void *w)
1706{
1707 W w_ = (W)w;
1708 int pending = w_->pending;
1709
1710 if (expect_true (pending))
1711 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1713 w_->pending = 0;
1714 p->w = 0;
1715 return p->events;
1716 }
1717 else
1718 return 0;
1719}
1720
1721void inline_size
1722pri_adjust (EV_P_ W w)
1723{
1724 int pri = w->priority;
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri;
1728}
1729
1399void inline_speed 1730void inline_speed
1400ev_start (EV_P_ W w, int active) 1731ev_start (EV_P_ W w, int active)
1401{ 1732{
1402 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1733 pri_adjust (EV_A_ w);
1403 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405 w->active = active; 1734 w->active = active;
1406 ev_ref (EV_A); 1735 ev_ref (EV_A);
1407} 1736}
1408 1737
1409void inline_size 1738void inline_size
… …
1413 w->active = 0; 1742 w->active = 0;
1414} 1743}
1415 1744
1416/*****************************************************************************/ 1745/*****************************************************************************/
1417 1746
1418void 1747void noinline
1419ev_io_start (EV_P_ ev_io *w) 1748ev_io_start (EV_P_ ev_io *w)
1420{ 1749{
1421 int fd = w->fd; 1750 int fd = w->fd;
1422 1751
1423 if (expect_false (ev_is_active (w))) 1752 if (expect_false (ev_is_active (w)))
… …
1425 1754
1426 assert (("ev_io_start called with negative fd", fd >= 0)); 1755 assert (("ev_io_start called with negative fd", fd >= 0));
1427 1756
1428 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1429 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1430 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1759 wlist_add (&anfds[fd].head, (WL)w);
1431 1760
1432 fd_change (EV_A_ fd); 1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1762 w->events &= ~EV_IOFDSET;
1433} 1763}
1434 1764
1435void 1765void noinline
1436ev_io_stop (EV_P_ ev_io *w) 1766ev_io_stop (EV_P_ ev_io *w)
1437{ 1767{
1438 ev_clear_pending (EV_A_ (W)w); 1768 clear_pending (EV_A_ (W)w);
1439 if (expect_false (!ev_is_active (w))) 1769 if (expect_false (!ev_is_active (w)))
1440 return; 1770 return;
1441 1771
1442 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1443 1773
1444 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1774 wlist_del (&anfds[w->fd].head, (WL)w);
1445 ev_stop (EV_A_ (W)w); 1775 ev_stop (EV_A_ (W)w);
1446 1776
1447 fd_change (EV_A_ w->fd); 1777 fd_change (EV_A_ w->fd, 1);
1448} 1778}
1449 1779
1450void 1780void noinline
1451ev_timer_start (EV_P_ ev_timer *w) 1781ev_timer_start (EV_P_ ev_timer *w)
1452{ 1782{
1453 if (expect_false (ev_is_active (w))) 1783 if (expect_false (ev_is_active (w)))
1454 return; 1784 return;
1455 1785
1456 ((WT)w)->at += mn_now; 1786 ((WT)w)->at += mn_now;
1457 1787
1458 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1459 1789
1460 ev_start (EV_A_ (W)w, ++timercnt); 1790 ev_start (EV_A_ (W)w, ++timercnt);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1462 timers [timercnt - 1] = w; 1792 timers [timercnt - 1] = (WT)w;
1463 upheap ((WT *)timers, timercnt - 1); 1793 upheap (timers, timercnt - 1);
1464 1794
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1466} 1796}
1467 1797
1468void 1798void noinline
1469ev_timer_stop (EV_P_ ev_timer *w) 1799ev_timer_stop (EV_P_ ev_timer *w)
1470{ 1800{
1471 ev_clear_pending (EV_A_ (W)w); 1801 clear_pending (EV_A_ (W)w);
1472 if (expect_false (!ev_is_active (w))) 1802 if (expect_false (!ev_is_active (w)))
1473 return; 1803 return;
1474 1804
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1476 1806
1807 {
1808 int active = ((W)w)->active;
1809
1477 if (expect_true (((W)w)->active < timercnt--)) 1810 if (expect_true (--active < --timercnt))
1478 { 1811 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 1812 timers [active] = timers [timercnt];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1813 adjustheap (timers, timercnt, active);
1481 } 1814 }
1815 }
1482 1816
1483 ((WT)w)->at -= mn_now; 1817 ((WT)w)->at -= mn_now;
1484 1818
1485 ev_stop (EV_A_ (W)w); 1819 ev_stop (EV_A_ (W)w);
1486} 1820}
1487 1821
1488void 1822void noinline
1489ev_timer_again (EV_P_ ev_timer *w) 1823ev_timer_again (EV_P_ ev_timer *w)
1490{ 1824{
1491 if (ev_is_active (w)) 1825 if (ev_is_active (w))
1492 { 1826 {
1493 if (w->repeat) 1827 if (w->repeat)
1494 { 1828 {
1495 ((WT)w)->at = mn_now + w->repeat; 1829 ((WT)w)->at = mn_now + w->repeat;
1496 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1830 adjustheap (timers, timercnt, ((W)w)->active - 1);
1497 } 1831 }
1498 else 1832 else
1499 ev_timer_stop (EV_A_ w); 1833 ev_timer_stop (EV_A_ w);
1500 } 1834 }
1501 else if (w->repeat) 1835 else if (w->repeat)
… …
1504 ev_timer_start (EV_A_ w); 1838 ev_timer_start (EV_A_ w);
1505 } 1839 }
1506} 1840}
1507 1841
1508#if EV_PERIODIC_ENABLE 1842#if EV_PERIODIC_ENABLE
1509void 1843void noinline
1510ev_periodic_start (EV_P_ ev_periodic *w) 1844ev_periodic_start (EV_P_ ev_periodic *w)
1511{ 1845{
1512 if (expect_false (ev_is_active (w))) 1846 if (expect_false (ev_is_active (w)))
1513 return; 1847 return;
1514 1848
… …
1516 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1517 else if (w->interval) 1851 else if (w->interval)
1518 { 1852 {
1519 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1520 /* this formula differs from the one in periodic_reify because we do not always round up */ 1854 /* this formula differs from the one in periodic_reify because we do not always round up */
1521 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1522 } 1856 }
1857 else
1858 ((WT)w)->at = w->offset;
1523 1859
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 1860 ev_start (EV_A_ (W)w, ++periodiccnt);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 1862 periodics [periodiccnt - 1] = (WT)w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 1863 upheap (periodics, periodiccnt - 1);
1528 1864
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1530} 1866}
1531 1867
1532void 1868void noinline
1533ev_periodic_stop (EV_P_ ev_periodic *w) 1869ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 1870{
1535 ev_clear_pending (EV_A_ (W)w); 1871 clear_pending (EV_A_ (W)w);
1536 if (expect_false (!ev_is_active (w))) 1872 if (expect_false (!ev_is_active (w)))
1537 return; 1873 return;
1538 1874
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1540 1876
1877 {
1878 int active = ((W)w)->active;
1879
1541 if (expect_true (((W)w)->active < periodiccnt--)) 1880 if (expect_true (--active < --periodiccnt))
1542 { 1881 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1882 periodics [active] = periodics [periodiccnt];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1883 adjustheap (periodics, periodiccnt, active);
1545 } 1884 }
1885 }
1546 1886
1547 ev_stop (EV_A_ (W)w); 1887 ev_stop (EV_A_ (W)w);
1548} 1888}
1549 1889
1550void 1890void noinline
1551ev_periodic_again (EV_P_ ev_periodic *w) 1891ev_periodic_again (EV_P_ ev_periodic *w)
1552{ 1892{
1553 /* TODO: use adjustheap and recalculation */ 1893 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 1894 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 1895 ev_periodic_start (EV_A_ w);
1556} 1896}
1557#endif 1897#endif
1558 1898
1559void
1560ev_idle_start (EV_P_ ev_idle *w)
1561{
1562 if (expect_false (ev_is_active (w)))
1563 return;
1564
1565 ev_start (EV_A_ (W)w, ++idlecnt);
1566 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1567 idles [idlecnt - 1] = w;
1568}
1569
1570void
1571ev_idle_stop (EV_P_ ev_idle *w)
1572{
1573 ev_clear_pending (EV_A_ (W)w);
1574 if (expect_false (!ev_is_active (w)))
1575 return;
1576
1577 {
1578 int active = ((W)w)->active;
1579 idles [active - 1] = idles [--idlecnt];
1580 ((W)idles [active - 1])->active = active;
1581 }
1582
1583 ev_stop (EV_A_ (W)w);
1584}
1585
1586void
1587ev_prepare_start (EV_P_ ev_prepare *w)
1588{
1589 if (expect_false (ev_is_active (w)))
1590 return;
1591
1592 ev_start (EV_A_ (W)w, ++preparecnt);
1593 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1594 prepares [preparecnt - 1] = w;
1595}
1596
1597void
1598ev_prepare_stop (EV_P_ ev_prepare *w)
1599{
1600 ev_clear_pending (EV_A_ (W)w);
1601 if (expect_false (!ev_is_active (w)))
1602 return;
1603
1604 {
1605 int active = ((W)w)->active;
1606 prepares [active - 1] = prepares [--preparecnt];
1607 ((W)prepares [active - 1])->active = active;
1608 }
1609
1610 ev_stop (EV_A_ (W)w);
1611}
1612
1613void
1614ev_check_start (EV_P_ ev_check *w)
1615{
1616 if (expect_false (ev_is_active (w)))
1617 return;
1618
1619 ev_start (EV_A_ (W)w, ++checkcnt);
1620 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1621 checks [checkcnt - 1] = w;
1622}
1623
1624void
1625ev_check_stop (EV_P_ ev_check *w)
1626{
1627 ev_clear_pending (EV_A_ (W)w);
1628 if (expect_false (!ev_is_active (w)))
1629 return;
1630
1631 {
1632 int active = ((W)w)->active;
1633 checks [active - 1] = checks [--checkcnt];
1634 ((W)checks [active - 1])->active = active;
1635 }
1636
1637 ev_stop (EV_A_ (W)w);
1638}
1639
1640#ifndef SA_RESTART 1899#ifndef SA_RESTART
1641# define SA_RESTART 0 1900# define SA_RESTART 0
1642#endif 1901#endif
1643 1902
1644void 1903void noinline
1645ev_signal_start (EV_P_ ev_signal *w) 1904ev_signal_start (EV_P_ ev_signal *w)
1646{ 1905{
1647#if EV_MULTIPLICITY 1906#if EV_MULTIPLICITY
1648 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1649#endif 1908#endif
1650 if (expect_false (ev_is_active (w))) 1909 if (expect_false (ev_is_active (w)))
1651 return; 1910 return;
1652 1911
1653 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1654 1913
1914 evpipe_init (EV_A);
1915
1916 {
1917#ifndef _WIN32
1918 sigset_t full, prev;
1919 sigfillset (&full);
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922
1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1924
1925#ifndef _WIN32
1926 sigprocmask (SIG_SETMASK, &prev, 0);
1927#endif
1928 }
1929
1655 ev_start (EV_A_ (W)w, 1); 1930 ev_start (EV_A_ (W)w, 1);
1656 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1657 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1931 wlist_add (&signals [w->signum - 1].head, (WL)w);
1658 1932
1659 if (!((WL)w)->next) 1933 if (!((WL)w)->next)
1660 { 1934 {
1661#if _WIN32 1935#if _WIN32
1662 signal (w->signum, sighandler); 1936 signal (w->signum, sighandler);
… …
1668 sigaction (w->signum, &sa, 0); 1942 sigaction (w->signum, &sa, 0);
1669#endif 1943#endif
1670 } 1944 }
1671} 1945}
1672 1946
1673void 1947void noinline
1674ev_signal_stop (EV_P_ ev_signal *w) 1948ev_signal_stop (EV_P_ ev_signal *w)
1675{ 1949{
1676 ev_clear_pending (EV_A_ (W)w); 1950 clear_pending (EV_A_ (W)w);
1677 if (expect_false (!ev_is_active (w))) 1951 if (expect_false (!ev_is_active (w)))
1678 return; 1952 return;
1679 1953
1680 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1954 wlist_del (&signals [w->signum - 1].head, (WL)w);
1681 ev_stop (EV_A_ (W)w); 1955 ev_stop (EV_A_ (W)w);
1682 1956
1683 if (!signals [w->signum - 1].head) 1957 if (!signals [w->signum - 1].head)
1684 signal (w->signum, SIG_DFL); 1958 signal (w->signum, SIG_DFL);
1685} 1959}
… …
1692#endif 1966#endif
1693 if (expect_false (ev_is_active (w))) 1967 if (expect_false (ev_is_active (w)))
1694 return; 1968 return;
1695 1969
1696 ev_start (EV_A_ (W)w, 1); 1970 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698} 1972}
1699 1973
1700void 1974void
1701ev_child_stop (EV_P_ ev_child *w) 1975ev_child_stop (EV_P_ ev_child *w)
1702{ 1976{
1703 ev_clear_pending (EV_A_ (W)w); 1977 clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 1978 if (expect_false (!ev_is_active (w)))
1705 return; 1979 return;
1706 1980
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1708 ev_stop (EV_A_ (W)w); 1982 ev_stop (EV_A_ (W)w);
1709} 1983}
1710 1984
1711#if EV_EMBED_ENABLE 1985#if EV_STAT_ENABLE
1986
1987# ifdef _WIN32
1988# undef lstat
1989# define lstat(a,b) _stati64 (a,b)
1990# endif
1991
1992#define DEF_STAT_INTERVAL 5.0074891
1993#define MIN_STAT_INTERVAL 0.1074891
1994
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996
1997#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192
1999
1712void noinline 2000static void noinline
1713ev_embed_sweep (EV_P_ ev_embed *w) 2001infy_add (EV_P_ ev_stat *w)
1714{ 2002{
1715 ev_loop (w->loop, EVLOOP_NONBLOCK); 2003 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);
2004
2005 if (w->wd < 0)
2006 {
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2008
2009 /* monitor some parent directory for speedup hints */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 {
2012 char path [4096];
2013 strcpy (path, w->path);
2014
2015 do
2016 {
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019
2020 char *pend = strrchr (path, '/');
2021
2022 if (!pend)
2023 break; /* whoops, no '/', complain to your admin */
2024
2025 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 }
2030 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033
2034 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2036}
2037
2038static void noinline
2039infy_del (EV_P_ ev_stat *w)
2040{
2041 int slot;
2042 int wd = w->wd;
2043
2044 if (wd < 0)
2045 return;
2046
2047 w->wd = -2;
2048 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2049 wlist_del (&fs_hash [slot].head, (WL)w);
2050
2051 /* remove this watcher, if others are watching it, they will rearm */
2052 inotify_rm_watch (fs_fd, wd);
2053}
2054
2055static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{
2058 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev);
2062 else
2063 {
2064 WL w_;
2065
2066 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2067 {
2068 ev_stat *w = (ev_stat *)w_;
2069 w_ = w_->next; /* lets us remove this watcher and all before it */
2070
2071 if (w->wd == wd || wd == -1)
2072 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 {
2075 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */
2077 }
2078
2079 stat_timer_cb (EV_A_ &w->timer, 0);
2080 }
2081 }
2082 }
1716} 2083}
1717 2084
1718static void 2085static void
1719embed_cb (EV_P_ ev_io *io, int revents) 2086infy_cb (EV_P_ ev_io *w, int revents)
1720{ 2087{
1721 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2088 char buf [EV_INOTIFY_BUFSIZE];
2089 struct inotify_event *ev = (struct inotify_event *)buf;
2090 int ofs;
2091 int len = read (fs_fd, buf, sizeof (buf));
1722 2092
1723 if (ev_cb (w)) 2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1724 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2094 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1725 else
1726 ev_embed_sweep (loop, w);
1727} 2095}
1728 2096
1729void 2097void inline_size
1730ev_embed_start (EV_P_ ev_embed *w) 2098infy_init (EV_P)
1731{ 2099{
1732 if (expect_false (ev_is_active (w))) 2100 if (fs_fd != -2)
1733 return; 2101 return;
1734 2102
2103 fs_fd = inotify_init ();
2104
2105 if (fs_fd >= 0)
1735 { 2106 {
1736 struct ev_loop *loop = w->loop; 2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1737 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2108 ev_set_priority (&fs_w, EV_MAXPRI);
1738 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1739 }
1740
1741 ev_set_priority (&w->io, ev_priority (w));
1742 ev_io_start (EV_A_ &w->io); 2109 ev_io_start (EV_A_ &fs_w);
1743 2110 }
1744 ev_start (EV_A_ (W)w, 1);
1745} 2111}
1746 2112
1747void 2113void inline_size
1748ev_embed_stop (EV_P_ ev_embed *w) 2114infy_fork (EV_P)
1749{ 2115{
1750 ev_clear_pending (EV_A_ (W)w); 2116 int slot;
1751 if (expect_false (!ev_is_active (w)))
1752 return;
1753 2117
1754 ev_io_stop (EV_A_ &w->io); 2118 if (fs_fd < 0)
2119 return;
1755 2120
1756 ev_stop (EV_A_ (W)w); 2121 close (fs_fd);
1757} 2122 fs_fd = inotify_init ();
1758#endif
1759 2123
1760#if EV_STAT_ENABLE 2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 {
2126 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0;
1761 2128
1762# ifdef _WIN32 2129 while (w_)
1763# define lstat(a,b) stat(a,b) 2130 {
2131 ev_stat *w = (ev_stat *)w_;
2132 w_ = w_->next; /* lets us add this watcher */
2133
2134 w->wd = -1;
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else
2139 ev_timer_start (EV_A_ &w->timer);
2140 }
2141
2142 }
2143}
2144
1764# endif 2145#endif
1765 2146
1766void 2147void
1767ev_stat_stat (EV_P_ ev_stat *w) 2148ev_stat_stat (EV_P_ ev_stat *w)
1768{ 2149{
1769 if (lstat (w->path, &w->attr) < 0) 2150 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0; 2151 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink) 2152 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1; 2153 w->attr.st_nlink = 1;
1773} 2154}
1774 2155
1775static void 2156static void noinline
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2157stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{ 2158{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2159 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779 2160
1780 /* we copy this here each the time so that */ 2161 /* we copy this here each the time so that */
1781 /* prev has the old value when the callback gets invoked */ 2162 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr; 2163 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w); 2164 ev_stat_stat (EV_A_ w);
1784 2165
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2167 if (
2168 w->prev.st_dev != w->attr.st_dev
2169 || w->prev.st_ino != w->attr.st_ino
2170 || w->prev.st_mode != w->attr.st_mode
2171 || w->prev.st_nlink != w->attr.st_nlink
2172 || w->prev.st_uid != w->attr.st_uid
2173 || w->prev.st_gid != w->attr.st_gid
2174 || w->prev.st_rdev != w->attr.st_rdev
2175 || w->prev.st_size != w->attr.st_size
2176 || w->prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime
2179 ) {
2180 #if EV_USE_INOTIFY
2181 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */
2184 #endif
2185
1786 ev_feed_event (EV_A_ w, EV_STAT); 2186 ev_feed_event (EV_A_ w, EV_STAT);
2187 }
1787} 2188}
1788 2189
1789void 2190void
1790ev_stat_start (EV_P_ ev_stat *w) 2191ev_stat_start (EV_P_ ev_stat *w)
1791{ 2192{
… …
1796 memset (&w->prev, 0, sizeof (ev_statdata)); 2197 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata)); 2198 memset (&w->attr, 0, sizeof (ev_statdata));
1798 2199
1799 ev_stat_stat (EV_A_ w); 2200 ev_stat_stat (EV_A_ w);
1800 2201
2202 if (w->interval < MIN_STAT_INTERVAL)
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1802 ev_set_priority (&w->timer, ev_priority (w)); 2206 ev_set_priority (&w->timer, ev_priority (w));
2207
2208#if EV_USE_INOTIFY
2209 infy_init (EV_A);
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w);
2213 else
2214#endif
1803 ev_timer_start (EV_A_ &w->timer); 2215 ev_timer_start (EV_A_ &w->timer);
1804 2216
1805 ev_start (EV_A_ (W)w, 1); 2217 ev_start (EV_A_ (W)w, 1);
1806} 2218}
1807 2219
1808void 2220void
1809ev_stat_stop (EV_P_ ev_stat *w) 2221ev_stat_stop (EV_P_ ev_stat *w)
1810{ 2222{
1811 ev_clear_pending (EV_A_ (W)w); 2223 clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2224 if (expect_false (!ev_is_active (w)))
1813 return; 2225 return;
1814 2226
2227#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w);
2229#endif
1815 ev_timer_stop (EV_A_ &w->timer); 2230 ev_timer_stop (EV_A_ &w->timer);
1816 2231
1817 ev_stop (EV_A_ (W)w); 2232 ev_stop (EV_A_ (W)w);
2233}
2234#endif
2235
2236#if EV_IDLE_ENABLE
2237void
2238ev_idle_start (EV_P_ ev_idle *w)
2239{
2240 if (expect_false (ev_is_active (w)))
2241 return;
2242
2243 pri_adjust (EV_A_ (W)w);
2244
2245 {
2246 int active = ++idlecnt [ABSPRI (w)];
2247
2248 ++idleall;
2249 ev_start (EV_A_ (W)w, active);
2250
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w;
2253 }
2254}
2255
2256void
2257ev_idle_stop (EV_P_ ev_idle *w)
2258{
2259 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w)))
2261 return;
2262
2263 {
2264 int active = ((W)w)->active;
2265
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2268
2269 ev_stop (EV_A_ (W)w);
2270 --idleall;
2271 }
2272}
2273#endif
2274
2275void
2276ev_prepare_start (EV_P_ ev_prepare *w)
2277{
2278 if (expect_false (ev_is_active (w)))
2279 return;
2280
2281 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w;
2284}
2285
2286void
2287ev_prepare_stop (EV_P_ ev_prepare *w)
2288{
2289 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w)))
2291 return;
2292
2293 {
2294 int active = ((W)w)->active;
2295 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active;
2297 }
2298
2299 ev_stop (EV_A_ (W)w);
2300}
2301
2302void
2303ev_check_start (EV_P_ ev_check *w)
2304{
2305 if (expect_false (ev_is_active (w)))
2306 return;
2307
2308 ev_start (EV_A_ (W)w, ++checkcnt);
2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2310 checks [checkcnt - 1] = w;
2311}
2312
2313void
2314ev_check_stop (EV_P_ ev_check *w)
2315{
2316 clear_pending (EV_A_ (W)w);
2317 if (expect_false (!ev_is_active (w)))
2318 return;
2319
2320 {
2321 int active = ((W)w)->active;
2322 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active;
2324 }
2325
2326 ev_stop (EV_A_ (W)w);
2327}
2328
2329#if EV_EMBED_ENABLE
2330void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w)
2332{
2333 ev_loop (w->other, EVLOOP_NONBLOCK);
2334}
2335
2336static void
2337embed_io_cb (EV_P_ ev_io *io, int revents)
2338{
2339 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2340
2341 if (ev_cb (w))
2342 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2343 else
2344 ev_loop (w->other, EVLOOP_NONBLOCK);
2345}
2346
2347static void
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351
2352 {
2353 struct ev_loop *loop = w->other;
2354
2355 while (fdchangecnt)
2356 {
2357 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 }
2360 }
2361}
2362
2363#if 0
2364static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{
2367 ev_idle_stop (EV_A_ idle);
2368}
2369#endif
2370
2371void
2372ev_embed_start (EV_P_ ev_embed *w)
2373{
2374 if (expect_false (ev_is_active (w)))
2375 return;
2376
2377 {
2378 struct ev_loop *loop = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 }
2382
2383 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io);
2385
2386 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare);
2389
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391
2392 ev_start (EV_A_ (W)w, 1);
2393}
2394
2395void
2396ev_embed_stop (EV_P_ ev_embed *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare);
2404
2405 ev_stop (EV_A_ (W)w);
2406}
2407#endif
2408
2409#if EV_FORK_ENABLE
2410void
2411ev_fork_start (EV_P_ ev_fork *w)
2412{
2413 if (expect_false (ev_is_active (w)))
2414 return;
2415
2416 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w;
2419}
2420
2421void
2422ev_fork_stop (EV_P_ ev_fork *w)
2423{
2424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w)))
2426 return;
2427
2428 {
2429 int active = ((W)w)->active;
2430 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active;
2432 }
2433
2434 ev_stop (EV_A_ (W)w);
2435}
2436#endif
2437
2438#if EV_ASYNC_ENABLE
2439void
2440ev_async_start (EV_P_ ev_async *w)
2441{
2442 if (expect_false (ev_is_active (w)))
2443 return;
2444
2445 evpipe_init (EV_A);
2446
2447 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w;
2450}
2451
2452void
2453ev_async_stop (EV_P_ ev_async *w)
2454{
2455 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w)))
2457 return;
2458
2459 {
2460 int active = ((W)w)->active;
2461 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active;
2463 }
2464
2465 ev_stop (EV_A_ (W)w);
2466}
2467
2468void
2469ev_async_send (EV_P_ ev_async *w)
2470{
2471 w->sent = 1;
2472 evpipe_write (EV_A_ 0, 1);
1818} 2473}
1819#endif 2474#endif
1820 2475
1821/*****************************************************************************/ 2476/*****************************************************************************/
1822 2477
… …
1880 ev_timer_set (&once->to, timeout, 0.); 2535 ev_timer_set (&once->to, timeout, 0.);
1881 ev_timer_start (EV_A_ &once->to); 2536 ev_timer_start (EV_A_ &once->to);
1882 } 2537 }
1883} 2538}
1884 2539
2540#if EV_MULTIPLICITY
2541 #include "ev_wrap.h"
2542#endif
2543
1885#ifdef __cplusplus 2544#ifdef __cplusplus
1886} 2545}
1887#endif 2546#endif
1888 2547

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