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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 1.209 by root, Tue Feb 5 23:56:33 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); /* child 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 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
852#if EV_ASYNC_ENABLE
853 if (gotasync)
854 {
855 int i;
856 gotasync = 0;
857
858 for (i = asynccnt; i--; )
859 if (asyncs [i]->sent)
860 {
861 asyncs [i]->sent = 0;
862 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
863 }
864 }
865#endif
710} 866}
711 867
712/*****************************************************************************/ 868/*****************************************************************************/
713 869
870static void
871sighandler (int signum)
872{
873#if EV_MULTIPLICITY
874 struct ev_loop *loop = &default_loop_struct;
875#endif
876
877#if _WIN32
878 signal (signum, sighandler);
879#endif
880
881 signals [signum - 1].gotsig = 1;
882 evpipe_write (EV_A_ 1, 0);
883}
884
885void noinline
886ev_feed_signal_event (EV_P_ int signum)
887{
888 WL w;
889
890#if EV_MULTIPLICITY
891 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
892#endif
893
894 --signum;
895
896 if (signum < 0 || signum >= signalmax)
897 return;
898
899 signals [signum].gotsig = 0;
900
901 for (w = signals [signum].head; w; w = w->next)
902 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
903}
904
905/*****************************************************************************/
906
714static ev_child *childs [PID_HASHSIZE]; 907static WL childs [EV_PID_HASHSIZE];
715 908
716#ifndef _WIN32 909#ifndef _WIN32
717 910
718static ev_signal childev; 911static ev_signal childev;
912
913#ifndef WIFCONTINUED
914# define WIFCONTINUED(status) 0
915#endif
916
917void inline_speed
918child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
919{
920 ev_child *w;
921 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
922
923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
924 {
925 if ((w->pid == pid || !w->pid)
926 && (!traced || (w->flags & 1)))
927 {
928 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
929 w->rpid = pid;
930 w->rstatus = status;
931 ev_feed_event (EV_A_ (W)w, EV_CHILD);
932 }
933 }
934}
719 935
720#ifndef WCONTINUED 936#ifndef WCONTINUED
721# define WCONTINUED 0 937# define WCONTINUED 0
722#endif 938#endif
723 939
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 940static void
740childcb (EV_P_ ev_signal *sw, int revents) 941childcb (EV_P_ ev_signal *sw, int revents)
741{ 942{
742 int pid, status; 943 int pid, status;
743 944
945 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 946 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 947 if (!WCONTINUED
948 || errno != EINVAL
949 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
950 return;
951
746 /* make sure we are called again until all childs have been reaped */ 952 /* 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 */ 953 /* 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); 954 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 955
750 child_reap (EV_A_ sw, pid, pid, status); 956 child_reap (EV_A_ sw, pid, pid, status);
957 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 */ 958 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 959}
754 960
755#endif 961#endif
756 962
757/*****************************************************************************/ 963/*****************************************************************************/
… …
829} 1035}
830 1036
831unsigned int 1037unsigned int
832ev_embeddable_backends (void) 1038ev_embeddable_backends (void)
833{ 1039{
834 return EVBACKEND_EPOLL 1040 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
835 | EVBACKEND_KQUEUE 1041
836 | EVBACKEND_PORT; 1042 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1043 /* please fix it and tell me how to detect the fix */
1044 flags &= ~EVBACKEND_EPOLL;
1045
1046 return flags;
837} 1047}
838 1048
839unsigned int 1049unsigned int
840ev_backend (EV_P) 1050ev_backend (EV_P)
841{ 1051{
842 return backend; 1052 return backend;
843} 1053}
844 1054
845static void 1055unsigned int
1056ev_loop_count (EV_P)
1057{
1058 return loop_count;
1059}
1060
1061void
1062ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1063{
1064 io_blocktime = interval;
1065}
1066
1067void
1068ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1069{
1070 timeout_blocktime = interval;
1071}
1072
1073static void noinline
846loop_init (EV_P_ unsigned int flags) 1074loop_init (EV_P_ unsigned int flags)
847{ 1075{
848 if (!backend) 1076 if (!backend)
849 { 1077 {
850#if EV_USE_MONOTONIC 1078#if EV_USE_MONOTONIC
… …
853 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1081 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
854 have_monotonic = 1; 1082 have_monotonic = 1;
855 } 1083 }
856#endif 1084#endif
857 1085
858 ev_rt_now = ev_time (); 1086 ev_rt_now = ev_time ();
859 mn_now = get_clock (); 1087 mn_now = get_clock ();
860 now_floor = mn_now; 1088 now_floor = mn_now;
861 rtmn_diff = ev_rt_now - mn_now; 1089 rtmn_diff = ev_rt_now - mn_now;
1090
1091 io_blocktime = 0.;
1092 timeout_blocktime = 0.;
1093 backend = 0;
1094 backend_fd = -1;
1095 gotasync = 0;
1096#if EV_USE_INOTIFY
1097 fs_fd = -2;
1098#endif
1099
1100 /* pid check not overridable via env */
1101#ifndef _WIN32
1102 if (flags & EVFLAG_FORKCHECK)
1103 curpid = getpid ();
1104#endif
862 1105
863 if (!(flags & EVFLAG_NOENV) 1106 if (!(flags & EVFLAG_NOENV)
864 && !enable_secure () 1107 && !enable_secure ()
865 && getenv ("LIBEV_FLAGS")) 1108 && getenv ("LIBEV_FLAGS"))
866 flags = atoi (getenv ("LIBEV_FLAGS")); 1109 flags = atoi (getenv ("LIBEV_FLAGS"));
867 1110
868 if (!(flags & 0x0000ffffUL)) 1111 if (!(flags & 0x0000ffffUL))
869 flags |= ev_recommended_backends (); 1112 flags |= ev_recommended_backends ();
870 1113
871 backend = 0;
872#if EV_USE_PORT 1114#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1115 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 1116#endif
875#if EV_USE_KQUEUE 1117#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1118 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
883#endif 1125#endif
884#if EV_USE_SELECT 1126#if EV_USE_SELECT
885 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1127 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
886#endif 1128#endif
887 1129
888 ev_init (&sigev, sigcb); 1130 ev_init (&pipeev, pipecb);
889 ev_set_priority (&sigev, EV_MAXPRI); 1131 ev_set_priority (&pipeev, EV_MAXPRI);
890 } 1132 }
891} 1133}
892 1134
893static void 1135static void noinline
894loop_destroy (EV_P) 1136loop_destroy (EV_P)
895{ 1137{
896 int i; 1138 int i;
1139
1140 if (ev_is_active (&pipeev))
1141 {
1142 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &pipeev);
1144
1145 close (evpipe [0]); evpipe [0] = 0;
1146 close (evpipe [1]); evpipe [1] = 0;
1147 }
1148
1149#if EV_USE_INOTIFY
1150 if (fs_fd >= 0)
1151 close (fs_fd);
1152#endif
1153
1154 if (backend_fd >= 0)
1155 close (backend_fd);
897 1156
898#if EV_USE_PORT 1157#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1158 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 1159#endif
901#if EV_USE_KQUEUE 1160#if EV_USE_KQUEUE
… …
910#if EV_USE_SELECT 1169#if EV_USE_SELECT
911 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1170 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912#endif 1171#endif
913 1172
914 for (i = NUMPRI; i--; ) 1173 for (i = NUMPRI; i--; )
1174 {
915 array_free (pending, [i]); 1175 array_free (pending, [i]);
1176#if EV_IDLE_ENABLE
1177 array_free (idle, [i]);
1178#endif
1179 }
1180
1181 ev_free (anfds); anfdmax = 0;
916 1182
917 /* have to use the microsoft-never-gets-it-right macro */ 1183 /* have to use the microsoft-never-gets-it-right macro */
918 array_free (fdchange, EMPTY0); 1184 array_free (fdchange, EMPTY);
919 array_free (timer, EMPTY0); 1185 array_free (timer, EMPTY);
920#if EV_PERIODIC_ENABLE 1186#if EV_PERIODIC_ENABLE
921 array_free (periodic, EMPTY0); 1187 array_free (periodic, EMPTY);
922#endif 1188#endif
1189#if EV_FORK_ENABLE
923 array_free (idle, EMPTY0); 1190 array_free (fork, EMPTY);
1191#endif
924 array_free (prepare, EMPTY0); 1192 array_free (prepare, EMPTY);
925 array_free (check, EMPTY0); 1193 array_free (check, EMPTY);
1194#if EV_ASYNC_ENABLE
1195 array_free (async, EMPTY);
1196#endif
926 1197
927 backend = 0; 1198 backend = 0;
928} 1199}
929 1200
930static void 1201void inline_size infy_fork (EV_P);
1202
1203void inline_size
931loop_fork (EV_P) 1204loop_fork (EV_P)
932{ 1205{
933#if EV_USE_PORT 1206#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1207 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 1208#endif
… …
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1210 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1211#endif
939#if EV_USE_EPOLL 1212#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1213 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
941#endif 1214#endif
1215#if EV_USE_INOTIFY
1216 infy_fork (EV_A);
1217#endif
942 1218
943 if (ev_is_active (&sigev)) 1219 if (ev_is_active (&pipeev))
944 { 1220 {
945 /* default loop */ 1221 /* this "locks" the handlers against writing to the pipe */
1222 gotsig = gotasync = 1;
946 1223
947 ev_ref (EV_A); 1224 ev_ref (EV_A);
948 ev_io_stop (EV_A_ &sigev); 1225 ev_io_stop (EV_A_ &pipeev);
949 close (sigpipe [0]); 1226 close (evpipe [0]);
950 close (sigpipe [1]); 1227 close (evpipe [1]);
951 1228
952 while (pipe (sigpipe))
953 syserr ("(libev) error creating pipe");
954
955 siginit (EV_A); 1229 evpipe_init (EV_A);
1230 /* now iterate over everything, in case we missed something */
1231 pipecb (EV_A_ &pipeev, EV_READ);
956 } 1232 }
957 1233
958 postfork = 0; 1234 postfork = 0;
959} 1235}
960 1236
… …
982} 1258}
983 1259
984void 1260void
985ev_loop_fork (EV_P) 1261ev_loop_fork (EV_P)
986{ 1262{
987 postfork = 1; 1263 postfork = 1; /* must be in line with ev_default_fork */
988} 1264}
989 1265
990#endif 1266#endif
991 1267
992#if EV_MULTIPLICITY 1268#if EV_MULTIPLICITY
… …
995#else 1271#else
996int 1272int
997ev_default_loop (unsigned int flags) 1273ev_default_loop (unsigned int flags)
998#endif 1274#endif
999{ 1275{
1000 if (sigpipe [0] == sigpipe [1])
1001 if (pipe (sigpipe))
1002 return 0;
1003
1004 if (!ev_default_loop_ptr) 1276 if (!ev_default_loop_ptr)
1005 { 1277 {
1006#if EV_MULTIPLICITY 1278#if EV_MULTIPLICITY
1007 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1279 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1008#else 1280#else
… …
1011 1283
1012 loop_init (EV_A_ flags); 1284 loop_init (EV_A_ flags);
1013 1285
1014 if (ev_backend (EV_A)) 1286 if (ev_backend (EV_A))
1015 { 1287 {
1016 siginit (EV_A);
1017
1018#ifndef _WIN32 1288#ifndef _WIN32
1019 ev_signal_init (&childev, childcb, SIGCHLD); 1289 ev_signal_init (&childev, childcb, SIGCHLD);
1020 ev_set_priority (&childev, EV_MAXPRI); 1290 ev_set_priority (&childev, EV_MAXPRI);
1021 ev_signal_start (EV_A_ &childev); 1291 ev_signal_start (EV_A_ &childev);
1022 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1292 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1039#ifndef _WIN32 1309#ifndef _WIN32
1040 ev_ref (EV_A); /* child watcher */ 1310 ev_ref (EV_A); /* child watcher */
1041 ev_signal_stop (EV_A_ &childev); 1311 ev_signal_stop (EV_A_ &childev);
1042#endif 1312#endif
1043 1313
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); 1314 loop_destroy (EV_A);
1051} 1315}
1052 1316
1053void 1317void
1054ev_default_fork (void) 1318ev_default_fork (void)
… …
1056#if EV_MULTIPLICITY 1320#if EV_MULTIPLICITY
1057 struct ev_loop *loop = ev_default_loop_ptr; 1321 struct ev_loop *loop = ev_default_loop_ptr;
1058#endif 1322#endif
1059 1323
1060 if (backend) 1324 if (backend)
1061 postfork = 1; 1325 postfork = 1; /* must be in line with ev_loop_fork */
1062} 1326}
1063 1327
1064/*****************************************************************************/ 1328/*****************************************************************************/
1065 1329
1066int inline_size 1330void
1067any_pending (EV_P) 1331ev_invoke (EV_P_ void *w, int revents)
1068{ 1332{
1069 int pri; 1333 EV_CB_INVOKE ((W)w, revents);
1070
1071 for (pri = NUMPRI; pri--; )
1072 if (pendingcnt [pri])
1073 return 1;
1074
1075 return 0;
1076} 1334}
1077 1335
1078void inline_speed 1336void inline_speed
1079call_pending (EV_P) 1337call_pending (EV_P)
1080{ 1338{
… …
1085 { 1343 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1344 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1345
1088 if (expect_true (p->w)) 1346 if (expect_true (p->w))
1089 { 1347 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1348 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1091 1349
1092 p->w->pending = 0; 1350 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1351 EV_CB_INVOKE (p->w, p->events);
1094 } 1352 }
1095 } 1353 }
… …
1098void inline_size 1356void inline_size
1099timers_reify (EV_P) 1357timers_reify (EV_P)
1100{ 1358{
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1359 while (timercnt && ((WT)timers [0])->at <= mn_now)
1102 { 1360 {
1103 ev_timer *w = timers [0]; 1361 ev_timer *w = (ev_timer *)timers [0];
1104 1362
1105 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1363 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106 1364
1107 /* first reschedule or stop timer */ 1365 /* first reschedule or stop timer */
1108 if (w->repeat) 1366 if (w->repeat)
1109 { 1367 {
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1368 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1111 1369
1112 ((WT)w)->at += w->repeat; 1370 ((WT)w)->at += w->repeat;
1113 if (((WT)w)->at < mn_now) 1371 if (((WT)w)->at < mn_now)
1114 ((WT)w)->at = mn_now; 1372 ((WT)w)->at = mn_now;
1115 1373
1116 downheap ((WT *)timers, timercnt, 0); 1374 downheap (timers, timercnt, 0);
1117 } 1375 }
1118 else 1376 else
1119 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1377 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120 1378
1121 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1379 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1126void inline_size 1384void inline_size
1127periodics_reify (EV_P) 1385periodics_reify (EV_P)
1128{ 1386{
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1387 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1130 { 1388 {
1131 ev_periodic *w = periodics [0]; 1389 ev_periodic *w = (ev_periodic *)periodics [0];
1132 1390
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1391 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134 1392
1135 /* first reschedule or stop timer */ 1393 /* first reschedule or stop timer */
1136 if (w->reschedule_cb) 1394 if (w->reschedule_cb)
1137 { 1395 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1396 ((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)); 1397 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1140 downheap ((WT *)periodics, periodiccnt, 0); 1398 downheap (periodics, periodiccnt, 0);
1141 } 1399 }
1142 else if (w->interval) 1400 else if (w->interval)
1143 { 1401 {
1144 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1402 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1403 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1145 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1404 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); 1405 downheap (periodics, periodiccnt, 0);
1147 } 1406 }
1148 else 1407 else
1149 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1408 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150 1409
1151 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1410 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1158 int i; 1417 int i;
1159 1418
1160 /* adjust periodics after time jump */ 1419 /* adjust periodics after time jump */
1161 for (i = 0; i < periodiccnt; ++i) 1420 for (i = 0; i < periodiccnt; ++i)
1162 { 1421 {
1163 ev_periodic *w = periodics [i]; 1422 ev_periodic *w = (ev_periodic *)periodics [i];
1164 1423
1165 if (w->reschedule_cb) 1424 if (w->reschedule_cb)
1166 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1167 else if (w->interval) 1426 else if (w->interval)
1168 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1427 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1169 } 1428 }
1170 1429
1171 /* now rebuild the heap */ 1430 /* now rebuild the heap */
1172 for (i = periodiccnt >> 1; i--; ) 1431 for (i = periodiccnt >> 1; i--; )
1173 downheap ((WT *)periodics, periodiccnt, i); 1432 downheap (periodics, periodiccnt, i);
1174} 1433}
1175#endif 1434#endif
1176 1435
1436#if EV_IDLE_ENABLE
1177int inline_size 1437void inline_size
1178time_update_monotonic (EV_P) 1438idle_reify (EV_P)
1179{ 1439{
1440 if (expect_false (idleall))
1441 {
1442 int pri;
1443
1444 for (pri = NUMPRI; pri--; )
1445 {
1446 if (pendingcnt [pri])
1447 break;
1448
1449 if (idlecnt [pri])
1450 {
1451 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1452 break;
1453 }
1454 }
1455 }
1456}
1457#endif
1458
1459void inline_speed
1460time_update (EV_P_ ev_tstamp max_block)
1461{
1462 int i;
1463
1464#if EV_USE_MONOTONIC
1465 if (expect_true (have_monotonic))
1466 {
1467 ev_tstamp odiff = rtmn_diff;
1468
1180 mn_now = get_clock (); 1469 mn_now = get_clock ();
1181 1470
1471 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1472 /* interpolate in the meantime */
1182 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1473 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183 { 1474 {
1184 ev_rt_now = rtmn_diff + mn_now; 1475 ev_rt_now = rtmn_diff + mn_now;
1185 return 0; 1476 return;
1186 } 1477 }
1187 else 1478
1188 {
1189 now_floor = mn_now; 1479 now_floor = mn_now;
1190 ev_rt_now = ev_time (); 1480 ev_rt_now = ev_time ();
1191 return 1;
1192 }
1193}
1194 1481
1195void inline_size 1482 /* loop a few times, before making important decisions.
1196time_update (EV_P) 1483 * on the choice of "4": one iteration isn't enough,
1197{ 1484 * in case we get preempted during the calls to
1198 int i; 1485 * ev_time and get_clock. a second call is almost guaranteed
1199 1486 * to succeed in that case, though. and looping a few more times
1200#if EV_USE_MONOTONIC 1487 * doesn't hurt either as we only do this on time-jumps or
1201 if (expect_true (have_monotonic)) 1488 * in the unlikely event of having been preempted here.
1202 { 1489 */
1203 if (time_update_monotonic (EV_A)) 1490 for (i = 4; --i; )
1204 { 1491 {
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; 1492 rtmn_diff = ev_rt_now - mn_now;
1218 1493
1219 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1494 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1220 return; /* all is well */ 1495 return; /* all is well */
1221 1496
1222 ev_rt_now = ev_time (); 1497 ev_rt_now = ev_time ();
1223 mn_now = get_clock (); 1498 mn_now = get_clock ();
1224 now_floor = mn_now; 1499 now_floor = mn_now;
1225 } 1500 }
1226 1501
1227# if EV_PERIODIC_ENABLE 1502# if EV_PERIODIC_ENABLE
1228 periodics_reschedule (EV_A); 1503 periodics_reschedule (EV_A);
1229# endif 1504# endif
1230 /* no timer adjustment, as the monotonic clock doesn't jump */ 1505 /* no timer adjustment, as the monotonic clock doesn't jump */
1231 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1506 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232 }
1233 } 1507 }
1234 else 1508 else
1235#endif 1509#endif
1236 { 1510 {
1237 ev_rt_now = ev_time (); 1511 ev_rt_now = ev_time ();
1238 1512
1239 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1513 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1240 { 1514 {
1241#if EV_PERIODIC_ENABLE 1515#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 1516 periodics_reschedule (EV_A);
1243#endif 1517#endif
1244
1245 /* adjust timers. this is easy, as the offset is the same for all */ 1518 /* adjust timers. this is easy, as the offset is the same for all of them */
1246 for (i = 0; i < timercnt; ++i) 1519 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now; 1520 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 1521 }
1249 1522
1250 mn_now = ev_rt_now; 1523 mn_now = ev_rt_now;
… …
1270{ 1543{
1271 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1544 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1272 ? EVUNLOOP_ONE 1545 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL; 1546 : EVUNLOOP_CANCEL;
1274 1547
1275 while (activecnt) 1548 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1549
1550 do
1276 { 1551 {
1552#ifndef _WIN32
1553 if (expect_false (curpid)) /* penalise the forking check even more */
1554 if (expect_false (getpid () != curpid))
1555 {
1556 curpid = getpid ();
1557 postfork = 1;
1558 }
1559#endif
1560
1561#if EV_FORK_ENABLE
1562 /* we might have forked, so queue fork handlers */
1563 if (expect_false (postfork))
1564 if (forkcnt)
1565 {
1566 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1567 call_pending (EV_A);
1568 }
1569#endif
1570
1277 /* queue check watchers (and execute them) */ 1571 /* queue prepare watchers (and execute them) */
1278 if (expect_false (preparecnt)) 1572 if (expect_false (preparecnt))
1279 { 1573 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1574 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 1575 call_pending (EV_A);
1282 } 1576 }
1283 1577
1578 if (expect_false (!activecnt))
1579 break;
1580
1284 /* we might have forked, so reify kernel state if necessary */ 1581 /* we might have forked, so reify kernel state if necessary */
1285 if (expect_false (postfork)) 1582 if (expect_false (postfork))
1286 loop_fork (EV_A); 1583 loop_fork (EV_A);
1287 1584
1288 /* update fd-related kernel structures */ 1585 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 1586 fd_reify (EV_A);
1290 1587
1291 /* calculate blocking time */ 1588 /* calculate blocking time */
1292 { 1589 {
1293 double block; 1590 ev_tstamp waittime = 0.;
1591 ev_tstamp sleeptime = 0.;
1294 1592
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 1593 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1296 block = 0.; /* do not block at all */
1297 else
1298 { 1594 {
1299 /* update time to cancel out callback processing overhead */ 1595 /* 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); 1596 time_update (EV_A_ 1e100);
1303 else
1304#endif
1305 {
1306 ev_rt_now = ev_time ();
1307 mn_now = ev_rt_now;
1308 }
1309 1597
1310 block = MAX_BLOCKTIME; 1598 waittime = MAX_BLOCKTIME;
1311 1599
1312 if (timercnt) 1600 if (timercnt)
1313 { 1601 {
1314 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1602 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1315 if (block > to) block = to; 1603 if (waittime > to) waittime = to;
1316 } 1604 }
1317 1605
1318#if EV_PERIODIC_ENABLE 1606#if EV_PERIODIC_ENABLE
1319 if (periodiccnt) 1607 if (periodiccnt)
1320 { 1608 {
1321 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1609 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1322 if (block > to) block = to; 1610 if (waittime > to) waittime = to;
1323 } 1611 }
1324#endif 1612#endif
1325 1613
1326 if (expect_false (block < 0.)) block = 0.; 1614 if (expect_false (waittime < timeout_blocktime))
1615 waittime = timeout_blocktime;
1616
1617 sleeptime = waittime - backend_fudge;
1618
1619 if (expect_true (sleeptime > io_blocktime))
1620 sleeptime = io_blocktime;
1621
1622 if (sleeptime)
1623 {
1624 ev_sleep (sleeptime);
1625 waittime -= sleeptime;
1626 }
1327 } 1627 }
1328 1628
1629 ++loop_count;
1329 backend_poll (EV_A_ block); 1630 backend_poll (EV_A_ waittime);
1631
1632 /* update ev_rt_now, do magic */
1633 time_update (EV_A_ waittime + sleeptime);
1330 } 1634 }
1331
1332 /* update ev_rt_now, do magic */
1333 time_update (EV_A);
1334 1635
1335 /* queue pending timers and reschedule them */ 1636 /* queue pending timers and reschedule them */
1336 timers_reify (EV_A); /* relative timers called last */ 1637 timers_reify (EV_A); /* relative timers called last */
1337#if EV_PERIODIC_ENABLE 1638#if EV_PERIODIC_ENABLE
1338 periodics_reify (EV_A); /* absolute timers called first */ 1639 periodics_reify (EV_A); /* absolute timers called first */
1339#endif 1640#endif
1340 1641
1642#if EV_IDLE_ENABLE
1341 /* queue idle watchers unless other events are pending */ 1643 /* queue idle watchers unless other events are pending */
1342 if (idlecnt && !any_pending (EV_A)) 1644 idle_reify (EV_A);
1343 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1645#endif
1344 1646
1345 /* queue check watchers, to be executed first */ 1647 /* queue check watchers, to be executed first */
1346 if (expect_false (checkcnt)) 1648 if (expect_false (checkcnt))
1347 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1649 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1348 1650
1349 call_pending (EV_A); 1651 call_pending (EV_A);
1350 1652
1351 if (expect_false (loop_done))
1352 break;
1353 } 1653 }
1654 while (expect_true (activecnt && !loop_done));
1354 1655
1355 if (loop_done == EVUNLOOP_ONE) 1656 if (loop_done == EVUNLOOP_ONE)
1356 loop_done = EVUNLOOP_CANCEL; 1657 loop_done = EVUNLOOP_CANCEL;
1357} 1658}
1358 1659
… …
1385 head = &(*head)->next; 1686 head = &(*head)->next;
1386 } 1687 }
1387} 1688}
1388 1689
1389void inline_speed 1690void inline_speed
1390ev_clear_pending (EV_P_ W w) 1691clear_pending (EV_P_ W w)
1391{ 1692{
1392 if (w->pending) 1693 if (w->pending)
1393 { 1694 {
1394 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1695 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1395 w->pending = 0; 1696 w->pending = 0;
1396 } 1697 }
1397} 1698}
1398 1699
1700int
1701ev_clear_pending (EV_P_ void *w)
1702{
1703 W w_ = (W)w;
1704 int pending = w_->pending;
1705
1706 if (expect_true (pending))
1707 {
1708 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1709 w_->pending = 0;
1710 p->w = 0;
1711 return p->events;
1712 }
1713 else
1714 return 0;
1715}
1716
1717void inline_size
1718pri_adjust (EV_P_ W w)
1719{
1720 int pri = w->priority;
1721 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1722 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1723 w->priority = pri;
1724}
1725
1399void inline_speed 1726void inline_speed
1400ev_start (EV_P_ W w, int active) 1727ev_start (EV_P_ W w, int active)
1401{ 1728{
1402 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1729 pri_adjust (EV_A_ w);
1403 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405 w->active = active; 1730 w->active = active;
1406 ev_ref (EV_A); 1731 ev_ref (EV_A);
1407} 1732}
1408 1733
1409void inline_size 1734void inline_size
… …
1413 w->active = 0; 1738 w->active = 0;
1414} 1739}
1415 1740
1416/*****************************************************************************/ 1741/*****************************************************************************/
1417 1742
1418void 1743void noinline
1419ev_io_start (EV_P_ ev_io *w) 1744ev_io_start (EV_P_ ev_io *w)
1420{ 1745{
1421 int fd = w->fd; 1746 int fd = w->fd;
1422 1747
1423 if (expect_false (ev_is_active (w))) 1748 if (expect_false (ev_is_active (w)))
… …
1425 1750
1426 assert (("ev_io_start called with negative fd", fd >= 0)); 1751 assert (("ev_io_start called with negative fd", fd >= 0));
1427 1752
1428 ev_start (EV_A_ (W)w, 1); 1753 ev_start (EV_A_ (W)w, 1);
1429 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1754 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1430 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1755 wlist_add (&anfds[fd].head, (WL)w);
1431 1756
1432 fd_change (EV_A_ fd); 1757 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1758 w->events &= ~EV_IOFDSET;
1433} 1759}
1434 1760
1435void 1761void noinline
1436ev_io_stop (EV_P_ ev_io *w) 1762ev_io_stop (EV_P_ ev_io *w)
1437{ 1763{
1438 ev_clear_pending (EV_A_ (W)w); 1764 clear_pending (EV_A_ (W)w);
1439 if (expect_false (!ev_is_active (w))) 1765 if (expect_false (!ev_is_active (w)))
1440 return; 1766 return;
1441 1767
1442 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1768 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1443 1769
1444 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1770 wlist_del (&anfds[w->fd].head, (WL)w);
1445 ev_stop (EV_A_ (W)w); 1771 ev_stop (EV_A_ (W)w);
1446 1772
1447 fd_change (EV_A_ w->fd); 1773 fd_change (EV_A_ w->fd, 1);
1448} 1774}
1449 1775
1450void 1776void noinline
1451ev_timer_start (EV_P_ ev_timer *w) 1777ev_timer_start (EV_P_ ev_timer *w)
1452{ 1778{
1453 if (expect_false (ev_is_active (w))) 1779 if (expect_false (ev_is_active (w)))
1454 return; 1780 return;
1455 1781
1456 ((WT)w)->at += mn_now; 1782 ((WT)w)->at += mn_now;
1457 1783
1458 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1784 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1459 1785
1460 ev_start (EV_A_ (W)w, ++timercnt); 1786 ev_start (EV_A_ (W)w, ++timercnt);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1787 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1462 timers [timercnt - 1] = w; 1788 timers [timercnt - 1] = (WT)w;
1463 upheap ((WT *)timers, timercnt - 1); 1789 upheap (timers, timercnt - 1);
1464 1790
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1791 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1466} 1792}
1467 1793
1468void 1794void noinline
1469ev_timer_stop (EV_P_ ev_timer *w) 1795ev_timer_stop (EV_P_ ev_timer *w)
1470{ 1796{
1471 ev_clear_pending (EV_A_ (W)w); 1797 clear_pending (EV_A_ (W)w);
1472 if (expect_false (!ev_is_active (w))) 1798 if (expect_false (!ev_is_active (w)))
1473 return; 1799 return;
1474 1800
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1801 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1476 1802
1803 {
1804 int active = ((W)w)->active;
1805
1477 if (expect_true (((W)w)->active < timercnt--)) 1806 if (expect_true (--active < --timercnt))
1478 { 1807 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 1808 timers [active] = timers [timercnt];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1809 adjustheap (timers, timercnt, active);
1481 } 1810 }
1811 }
1482 1812
1483 ((WT)w)->at -= mn_now; 1813 ((WT)w)->at -= mn_now;
1484 1814
1485 ev_stop (EV_A_ (W)w); 1815 ev_stop (EV_A_ (W)w);
1486} 1816}
1487 1817
1488void 1818void noinline
1489ev_timer_again (EV_P_ ev_timer *w) 1819ev_timer_again (EV_P_ ev_timer *w)
1490{ 1820{
1491 if (ev_is_active (w)) 1821 if (ev_is_active (w))
1492 { 1822 {
1493 if (w->repeat) 1823 if (w->repeat)
1494 { 1824 {
1495 ((WT)w)->at = mn_now + w->repeat; 1825 ((WT)w)->at = mn_now + w->repeat;
1496 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1826 adjustheap (timers, timercnt, ((W)w)->active - 1);
1497 } 1827 }
1498 else 1828 else
1499 ev_timer_stop (EV_A_ w); 1829 ev_timer_stop (EV_A_ w);
1500 } 1830 }
1501 else if (w->repeat) 1831 else if (w->repeat)
… …
1504 ev_timer_start (EV_A_ w); 1834 ev_timer_start (EV_A_ w);
1505 } 1835 }
1506} 1836}
1507 1837
1508#if EV_PERIODIC_ENABLE 1838#if EV_PERIODIC_ENABLE
1509void 1839void noinline
1510ev_periodic_start (EV_P_ ev_periodic *w) 1840ev_periodic_start (EV_P_ ev_periodic *w)
1511{ 1841{
1512 if (expect_false (ev_is_active (w))) 1842 if (expect_false (ev_is_active (w)))
1513 return; 1843 return;
1514 1844
… …
1516 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1846 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1517 else if (w->interval) 1847 else if (w->interval)
1518 { 1848 {
1519 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1849 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 */ 1850 /* 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; 1851 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1522 } 1852 }
1853 else
1854 ((WT)w)->at = w->offset;
1523 1855
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 1856 ev_start (EV_A_ (W)w, ++periodiccnt);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1857 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 1858 periodics [periodiccnt - 1] = (WT)w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 1859 upheap (periodics, periodiccnt - 1);
1528 1860
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1861 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1530} 1862}
1531 1863
1532void 1864void noinline
1533ev_periodic_stop (EV_P_ ev_periodic *w) 1865ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 1866{
1535 ev_clear_pending (EV_A_ (W)w); 1867 clear_pending (EV_A_ (W)w);
1536 if (expect_false (!ev_is_active (w))) 1868 if (expect_false (!ev_is_active (w)))
1537 return; 1869 return;
1538 1870
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1871 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1540 1872
1873 {
1874 int active = ((W)w)->active;
1875
1541 if (expect_true (((W)w)->active < periodiccnt--)) 1876 if (expect_true (--active < --periodiccnt))
1542 { 1877 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1878 periodics [active] = periodics [periodiccnt];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1879 adjustheap (periodics, periodiccnt, active);
1545 } 1880 }
1881 }
1546 1882
1547 ev_stop (EV_A_ (W)w); 1883 ev_stop (EV_A_ (W)w);
1548} 1884}
1549 1885
1550void 1886void noinline
1551ev_periodic_again (EV_P_ ev_periodic *w) 1887ev_periodic_again (EV_P_ ev_periodic *w)
1552{ 1888{
1553 /* TODO: use adjustheap and recalculation */ 1889 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 1890 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 1891 ev_periodic_start (EV_A_ w);
1556} 1892}
1557#endif 1893#endif
1558 1894
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 1895#ifndef SA_RESTART
1641# define SA_RESTART 0 1896# define SA_RESTART 0
1642#endif 1897#endif
1643 1898
1644void 1899void noinline
1645ev_signal_start (EV_P_ ev_signal *w) 1900ev_signal_start (EV_P_ ev_signal *w)
1646{ 1901{
1647#if EV_MULTIPLICITY 1902#if EV_MULTIPLICITY
1648 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1903 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1649#endif 1904#endif
1650 if (expect_false (ev_is_active (w))) 1905 if (expect_false (ev_is_active (w)))
1651 return; 1906 return;
1652 1907
1653 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1908 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1654 1909
1910 evpipe_init (EV_A);
1911
1912 {
1913#ifndef _WIN32
1914 sigset_t full, prev;
1915 sigfillset (&full);
1916 sigprocmask (SIG_SETMASK, &full, &prev);
1917#endif
1918
1919 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1920
1921#ifndef _WIN32
1922 sigprocmask (SIG_SETMASK, &prev, 0);
1923#endif
1924 }
1925
1655 ev_start (EV_A_ (W)w, 1); 1926 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); 1927 wlist_add (&signals [w->signum - 1].head, (WL)w);
1658 1928
1659 if (!((WL)w)->next) 1929 if (!((WL)w)->next)
1660 { 1930 {
1661#if _WIN32 1931#if _WIN32
1662 signal (w->signum, sighandler); 1932 signal (w->signum, sighandler);
… …
1668 sigaction (w->signum, &sa, 0); 1938 sigaction (w->signum, &sa, 0);
1669#endif 1939#endif
1670 } 1940 }
1671} 1941}
1672 1942
1673void 1943void noinline
1674ev_signal_stop (EV_P_ ev_signal *w) 1944ev_signal_stop (EV_P_ ev_signal *w)
1675{ 1945{
1676 ev_clear_pending (EV_A_ (W)w); 1946 clear_pending (EV_A_ (W)w);
1677 if (expect_false (!ev_is_active (w))) 1947 if (expect_false (!ev_is_active (w)))
1678 return; 1948 return;
1679 1949
1680 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1950 wlist_del (&signals [w->signum - 1].head, (WL)w);
1681 ev_stop (EV_A_ (W)w); 1951 ev_stop (EV_A_ (W)w);
1682 1952
1683 if (!signals [w->signum - 1].head) 1953 if (!signals [w->signum - 1].head)
1684 signal (w->signum, SIG_DFL); 1954 signal (w->signum, SIG_DFL);
1685} 1955}
… …
1692#endif 1962#endif
1693 if (expect_false (ev_is_active (w))) 1963 if (expect_false (ev_is_active (w)))
1694 return; 1964 return;
1695 1965
1696 ev_start (EV_A_ (W)w, 1); 1966 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1967 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698} 1968}
1699 1969
1700void 1970void
1701ev_child_stop (EV_P_ ev_child *w) 1971ev_child_stop (EV_P_ ev_child *w)
1702{ 1972{
1703 ev_clear_pending (EV_A_ (W)w); 1973 clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 1974 if (expect_false (!ev_is_active (w)))
1705 return; 1975 return;
1706 1976
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1977 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1708 ev_stop (EV_A_ (W)w); 1978 ev_stop (EV_A_ (W)w);
1709} 1979}
1710 1980
1711#if EV_EMBED_ENABLE 1981#if EV_STAT_ENABLE
1982
1983# ifdef _WIN32
1984# undef lstat
1985# define lstat(a,b) _stati64 (a,b)
1986# endif
1987
1988#define DEF_STAT_INTERVAL 5.0074891
1989#define MIN_STAT_INTERVAL 0.1074891
1990
1991static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1992
1993#if EV_USE_INOTIFY
1994# define EV_INOTIFY_BUFSIZE 8192
1995
1712void noinline 1996static void noinline
1713ev_embed_sweep (EV_P_ ev_embed *w) 1997infy_add (EV_P_ ev_stat *w)
1714{ 1998{
1715 ev_loop (w->loop, EVLOOP_NONBLOCK); 1999 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2000
2001 if (w->wd < 0)
2002 {
2003 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2004
2005 /* monitor some parent directory for speedup hints */
2006 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2007 {
2008 char path [4096];
2009 strcpy (path, w->path);
2010
2011 do
2012 {
2013 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2014 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2015
2016 char *pend = strrchr (path, '/');
2017
2018 if (!pend)
2019 break; /* whoops, no '/', complain to your admin */
2020
2021 *pend = 0;
2022 w->wd = inotify_add_watch (fs_fd, path, mask);
2023 }
2024 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2025 }
2026 }
2027 else
2028 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2029
2030 if (w->wd >= 0)
2031 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2032}
2033
2034static void noinline
2035infy_del (EV_P_ ev_stat *w)
2036{
2037 int slot;
2038 int wd = w->wd;
2039
2040 if (wd < 0)
2041 return;
2042
2043 w->wd = -2;
2044 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2045 wlist_del (&fs_hash [slot].head, (WL)w);
2046
2047 /* remove this watcher, if others are watching it, they will rearm */
2048 inotify_rm_watch (fs_fd, wd);
2049}
2050
2051static void noinline
2052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2053{
2054 if (slot < 0)
2055 /* overflow, need to check for all hahs slots */
2056 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2057 infy_wd (EV_A_ slot, wd, ev);
2058 else
2059 {
2060 WL w_;
2061
2062 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us remove this watcher and all before it */
2066
2067 if (w->wd == wd || wd == -1)
2068 {
2069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2070 {
2071 w->wd = -1;
2072 infy_add (EV_A_ w); /* re-add, no matter what */
2073 }
2074
2075 stat_timer_cb (EV_A_ &w->timer, 0);
2076 }
2077 }
2078 }
1716} 2079}
1717 2080
1718static void 2081static void
1719embed_cb (EV_P_ ev_io *io, int revents) 2082infy_cb (EV_P_ ev_io *w, int revents)
1720{ 2083{
1721 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2084 char buf [EV_INOTIFY_BUFSIZE];
2085 struct inotify_event *ev = (struct inotify_event *)buf;
2086 int ofs;
2087 int len = read (fs_fd, buf, sizeof (buf));
1722 2088
1723 if (ev_cb (w)) 2089 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1724 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2090 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1725 else
1726 ev_embed_sweep (loop, w);
1727} 2091}
1728 2092
1729void 2093void inline_size
1730ev_embed_start (EV_P_ ev_embed *w) 2094infy_init (EV_P)
1731{ 2095{
1732 if (expect_false (ev_is_active (w))) 2096 if (fs_fd != -2)
1733 return; 2097 return;
1734 2098
2099 fs_fd = inotify_init ();
2100
2101 if (fs_fd >= 0)
1735 { 2102 {
1736 struct ev_loop *loop = w->loop; 2103 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1737 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2104 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); 2105 ev_io_start (EV_A_ &fs_w);
1743 2106 }
1744 ev_start (EV_A_ (W)w, 1);
1745} 2107}
1746 2108
1747void 2109void inline_size
1748ev_embed_stop (EV_P_ ev_embed *w) 2110infy_fork (EV_P)
1749{ 2111{
1750 ev_clear_pending (EV_A_ (W)w); 2112 int slot;
1751 if (expect_false (!ev_is_active (w)))
1752 return;
1753 2113
1754 ev_io_stop (EV_A_ &w->io); 2114 if (fs_fd < 0)
2115 return;
1755 2116
1756 ev_stop (EV_A_ (W)w); 2117 close (fs_fd);
1757} 2118 fs_fd = inotify_init ();
1758#endif
1759 2119
1760#if EV_STAT_ENABLE 2120 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2121 {
2122 WL w_ = fs_hash [slot].head;
2123 fs_hash [slot].head = 0;
1761 2124
1762# ifdef _WIN32 2125 while (w_)
1763# define lstat(a,b) stat(a,b) 2126 {
2127 ev_stat *w = (ev_stat *)w_;
2128 w_ = w_->next; /* lets us add this watcher */
2129
2130 w->wd = -1;
2131
2132 if (fs_fd >= 0)
2133 infy_add (EV_A_ w); /* re-add, no matter what */
2134 else
2135 ev_timer_start (EV_A_ &w->timer);
2136 }
2137
2138 }
2139}
2140
1764# endif 2141#endif
1765 2142
1766void 2143void
1767ev_stat_stat (EV_P_ ev_stat *w) 2144ev_stat_stat (EV_P_ ev_stat *w)
1768{ 2145{
1769 if (lstat (w->path, &w->attr) < 0) 2146 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0; 2147 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink) 2148 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1; 2149 w->attr.st_nlink = 1;
1773} 2150}
1774 2151
1775static void 2152static void noinline
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2153stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{ 2154{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2155 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779 2156
1780 /* we copy this here each the time so that */ 2157 /* we copy this here each the time so that */
1781 /* prev has the old value when the callback gets invoked */ 2158 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr; 2159 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w); 2160 ev_stat_stat (EV_A_ w);
1784 2161
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2162 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2163 if (
2164 w->prev.st_dev != w->attr.st_dev
2165 || w->prev.st_ino != w->attr.st_ino
2166 || w->prev.st_mode != w->attr.st_mode
2167 || w->prev.st_nlink != w->attr.st_nlink
2168 || w->prev.st_uid != w->attr.st_uid
2169 || w->prev.st_gid != w->attr.st_gid
2170 || w->prev.st_rdev != w->attr.st_rdev
2171 || w->prev.st_size != w->attr.st_size
2172 || w->prev.st_atime != w->attr.st_atime
2173 || w->prev.st_mtime != w->attr.st_mtime
2174 || w->prev.st_ctime != w->attr.st_ctime
2175 ) {
2176 #if EV_USE_INOTIFY
2177 infy_del (EV_A_ w);
2178 infy_add (EV_A_ w);
2179 ev_stat_stat (EV_A_ w); /* avoid race... */
2180 #endif
2181
1786 ev_feed_event (EV_A_ w, EV_STAT); 2182 ev_feed_event (EV_A_ w, EV_STAT);
2183 }
1787} 2184}
1788 2185
1789void 2186void
1790ev_stat_start (EV_P_ ev_stat *w) 2187ev_stat_start (EV_P_ ev_stat *w)
1791{ 2188{
… …
1796 memset (&w->prev, 0, sizeof (ev_statdata)); 2193 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata)); 2194 memset (&w->attr, 0, sizeof (ev_statdata));
1798 2195
1799 ev_stat_stat (EV_A_ w); 2196 ev_stat_stat (EV_A_ w);
1800 2197
2198 if (w->interval < MIN_STAT_INTERVAL)
2199 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2200
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2201 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1802 ev_set_priority (&w->timer, ev_priority (w)); 2202 ev_set_priority (&w->timer, ev_priority (w));
2203
2204#if EV_USE_INOTIFY
2205 infy_init (EV_A);
2206
2207 if (fs_fd >= 0)
2208 infy_add (EV_A_ w);
2209 else
2210#endif
1803 ev_timer_start (EV_A_ &w->timer); 2211 ev_timer_start (EV_A_ &w->timer);
1804 2212
1805 ev_start (EV_A_ (W)w, 1); 2213 ev_start (EV_A_ (W)w, 1);
1806} 2214}
1807 2215
1808void 2216void
1809ev_stat_stop (EV_P_ ev_stat *w) 2217ev_stat_stop (EV_P_ ev_stat *w)
1810{ 2218{
1811 ev_clear_pending (EV_A_ (W)w); 2219 clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2220 if (expect_false (!ev_is_active (w)))
1813 return; 2221 return;
1814 2222
2223#if EV_USE_INOTIFY
2224 infy_del (EV_A_ w);
2225#endif
1815 ev_timer_stop (EV_A_ &w->timer); 2226 ev_timer_stop (EV_A_ &w->timer);
1816 2227
1817 ev_stop (EV_A_ (W)w); 2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
2232#if EV_IDLE_ENABLE
2233void
2234ev_idle_start (EV_P_ ev_idle *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 pri_adjust (EV_A_ (W)w);
2240
2241 {
2242 int active = ++idlecnt [ABSPRI (w)];
2243
2244 ++idleall;
2245 ev_start (EV_A_ (W)w, active);
2246
2247 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2248 idles [ABSPRI (w)][active - 1] = w;
2249 }
2250}
2251
2252void
2253ev_idle_stop (EV_P_ ev_idle *w)
2254{
2255 clear_pending (EV_A_ (W)w);
2256 if (expect_false (!ev_is_active (w)))
2257 return;
2258
2259 {
2260 int active = ((W)w)->active;
2261
2262 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2263 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2264
2265 ev_stop (EV_A_ (W)w);
2266 --idleall;
2267 }
2268}
2269#endif
2270
2271void
2272ev_prepare_start (EV_P_ ev_prepare *w)
2273{
2274 if (expect_false (ev_is_active (w)))
2275 return;
2276
2277 ev_start (EV_A_ (W)w, ++preparecnt);
2278 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2279 prepares [preparecnt - 1] = w;
2280}
2281
2282void
2283ev_prepare_stop (EV_P_ ev_prepare *w)
2284{
2285 clear_pending (EV_A_ (W)w);
2286 if (expect_false (!ev_is_active (w)))
2287 return;
2288
2289 {
2290 int active = ((W)w)->active;
2291 prepares [active - 1] = prepares [--preparecnt];
2292 ((W)prepares [active - 1])->active = active;
2293 }
2294
2295 ev_stop (EV_A_ (W)w);
2296}
2297
2298void
2299ev_check_start (EV_P_ ev_check *w)
2300{
2301 if (expect_false (ev_is_active (w)))
2302 return;
2303
2304 ev_start (EV_A_ (W)w, ++checkcnt);
2305 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2306 checks [checkcnt - 1] = w;
2307}
2308
2309void
2310ev_check_stop (EV_P_ ev_check *w)
2311{
2312 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w)))
2314 return;
2315
2316 {
2317 int active = ((W)w)->active;
2318 checks [active - 1] = checks [--checkcnt];
2319 ((W)checks [active - 1])->active = active;
2320 }
2321
2322 ev_stop (EV_A_ (W)w);
2323}
2324
2325#if EV_EMBED_ENABLE
2326void noinline
2327ev_embed_sweep (EV_P_ ev_embed *w)
2328{
2329 ev_loop (w->other, EVLOOP_NONBLOCK);
2330}
2331
2332static void
2333embed_io_cb (EV_P_ ev_io *io, int revents)
2334{
2335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2336
2337 if (ev_cb (w))
2338 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2339 else
2340 ev_loop (w->other, EVLOOP_NONBLOCK);
2341}
2342
2343static void
2344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2345{
2346 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2347
2348 {
2349 struct ev_loop *loop = w->other;
2350
2351 while (fdchangecnt)
2352 {
2353 fd_reify (EV_A);
2354 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2355 }
2356 }
2357}
2358
2359#if 0
2360static void
2361embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2362{
2363 ev_idle_stop (EV_A_ idle);
2364}
2365#endif
2366
2367void
2368ev_embed_start (EV_P_ ev_embed *w)
2369{
2370 if (expect_false (ev_is_active (w)))
2371 return;
2372
2373 {
2374 struct ev_loop *loop = w->other;
2375 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2376 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2377 }
2378
2379 ev_set_priority (&w->io, ev_priority (w));
2380 ev_io_start (EV_A_ &w->io);
2381
2382 ev_prepare_init (&w->prepare, embed_prepare_cb);
2383 ev_set_priority (&w->prepare, EV_MINPRI);
2384 ev_prepare_start (EV_A_ &w->prepare);
2385
2386 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2387
2388 ev_start (EV_A_ (W)w, 1);
2389}
2390
2391void
2392ev_embed_stop (EV_P_ ev_embed *w)
2393{
2394 clear_pending (EV_A_ (W)w);
2395 if (expect_false (!ev_is_active (w)))
2396 return;
2397
2398 ev_io_stop (EV_A_ &w->io);
2399 ev_prepare_stop (EV_A_ &w->prepare);
2400
2401 ev_stop (EV_A_ (W)w);
2402}
2403#endif
2404
2405#if EV_FORK_ENABLE
2406void
2407ev_fork_start (EV_P_ ev_fork *w)
2408{
2409 if (expect_false (ev_is_active (w)))
2410 return;
2411
2412 ev_start (EV_A_ (W)w, ++forkcnt);
2413 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2414 forks [forkcnt - 1] = w;
2415}
2416
2417void
2418ev_fork_stop (EV_P_ ev_fork *w)
2419{
2420 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w)))
2422 return;
2423
2424 {
2425 int active = ((W)w)->active;
2426 forks [active - 1] = forks [--forkcnt];
2427 ((W)forks [active - 1])->active = active;
2428 }
2429
2430 ev_stop (EV_A_ (W)w);
2431}
2432#endif
2433
2434#if EV_ASYNC_ENABLE
2435void
2436ev_async_start (EV_P_ ev_async *w)
2437{
2438 if (expect_false (ev_is_active (w)))
2439 return;
2440
2441 evpipe_init (EV_A);
2442
2443 ev_start (EV_A_ (W)w, ++asynccnt);
2444 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2445 asyncs [asynccnt - 1] = w;
2446}
2447
2448void
2449ev_async_stop (EV_P_ ev_async *w)
2450{
2451 clear_pending (EV_A_ (W)w);
2452 if (expect_false (!ev_is_active (w)))
2453 return;
2454
2455 {
2456 int active = ((W)w)->active;
2457 asyncs [active - 1] = asyncs [--asynccnt];
2458 ((W)asyncs [active - 1])->active = active;
2459 }
2460
2461 ev_stop (EV_A_ (W)w);
2462}
2463
2464void
2465ev_async_send (EV_P_ ev_async *w)
2466{
2467 w->sent = 1;
2468 evpipe_write (EV_A_ 0, 1);
1818} 2469}
1819#endif 2470#endif
1820 2471
1821/*****************************************************************************/ 2472/*****************************************************************************/
1822 2473
… …
1880 ev_timer_set (&once->to, timeout, 0.); 2531 ev_timer_set (&once->to, timeout, 0.);
1881 ev_timer_start (EV_A_ &once->to); 2532 ev_timer_start (EV_A_ &once->to);
1882 } 2533 }
1883} 2534}
1884 2535
2536#if EV_MULTIPLICITY
2537 #include "ev_wrap.h"
2538#endif
2539
1885#ifdef __cplusplus 2540#ifdef __cplusplus
1886} 2541}
1887#endif 2542#endif
1888 2543

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