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Comparing libev/ev.c (file contents):
Revision 1.143 by root, Tue Nov 27 07:27:10 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 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
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
… …
51# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
53# endif 62# endif
54# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 64# define EV_USE_REALTIME 0
65# endif
66# endif
67
68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
56# endif 73# endif
57# endif 74# endif
58 75
59# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 111# else
95# define EV_USE_PORT 0 112# define EV_USE_PORT 0
96# endif 113# endif
97# endif 114# endif
98 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
99#endif 132#endif
100 133
101#include <math.h> 134#include <math.h>
102#include <stdlib.h> 135#include <stdlib.h>
103#include <fcntl.h> 136#include <fcntl.h>
… …
109#include <errno.h> 142#include <errno.h>
110#include <sys/types.h> 143#include <sys/types.h>
111#include <time.h> 144#include <time.h>
112 145
113#include <signal.h> 146#include <signal.h>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
114 153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <sys/time.h> 155# include <sys/time.h>
117# include <sys/wait.h> 156# include <sys/wait.h>
118# include <unistd.h> 157# include <unistd.h>
… …
122# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
124# endif 163# endif
125#endif 164#endif
126 165
127/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
128 167
129#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
130# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
131#endif 170#endif
132 171
133#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
135#endif 178#endif
136 179
137#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
139#endif 182#endif
… …
145# define EV_USE_POLL 1 188# define EV_USE_POLL 1
146# endif 189# endif
147#endif 190#endif
148 191
149#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
150# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
151#endif 198#endif
152 199
153#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
155#endif 202#endif
156 203
157#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 205# define EV_USE_PORT 0
159#endif 206#endif
160 207
161/**/ 208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 241
163#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
166#endif 245#endif
… …
168#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
171#endif 250#endif
172 251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
173#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 268# include <winsock.h>
175#endif 269#endif
176 270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
281#endif
282
177/**/ 283/**/
284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 294
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#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) */ 296#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 */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 298
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 299#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 300# 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)) 301# 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 302#else
201# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 304# define noinline
305# if __STDC_VERSION__ < 199901L
306# define inline
307# endif
205#endif 308#endif
206 309
207#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
209 319
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 322
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 324#define EMPTY2(a,b) /* used to suppress some warnings */
215 325
216typedef ev_watcher *W; 326typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
219 329
330#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 333static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
334#endif
221 335
222#ifdef _WIN32 336#ifdef _WIN32
223# include "ev_win32.c" 337# include "ev_win32.c"
224#endif 338#endif
225 339
… …
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 368ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 369{
256 alloc = cb; 370 alloc = cb;
257} 371}
258 372
259static void * 373inline_speed void *
260ev_realloc (void *ptr, long size) 374ev_realloc (void *ptr, long size)
261{ 375{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 376 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263 377
264 if (!ptr && size) 378 if (!ptr && size)
… …
288typedef struct 402typedef struct
289{ 403{
290 W w; 404 W w;
291 int events; 405 int events;
292} ANPENDING; 406} ANPENDING;
407
408#if EV_USE_INOTIFY
409typedef struct
410{
411 WL head;
412} ANFS;
413#endif
293 414
294#if EV_MULTIPLICITY 415#if EV_MULTIPLICITY
295 416
296 struct ev_loop 417 struct ev_loop
297 { 418 {
… …
354{ 475{
355 return ev_rt_now; 476 return ev_rt_now;
356} 477}
357#endif 478#endif
358 479
359#define array_roundsize(type,n) (((n) | 4) & ~3) 480void
481ev_sleep (ev_tstamp delay)
482{
483 if (delay > 0.)
484 {
485#if EV_USE_NANOSLEEP
486 struct timespec ts;
487
488 ts.tv_sec = (time_t)delay;
489 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
490
491 nanosleep (&ts, 0);
492#elif defined(_WIN32)
493 Sleep ((unsigned long)(delay * 1e3));
494#else
495 struct timeval tv;
496
497 tv.tv_sec = (time_t)delay;
498 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
499
500 select (0, 0, 0, 0, &tv);
501#endif
502 }
503}
504
505/*****************************************************************************/
506
507int inline_size
508array_nextsize (int elem, int cur, int cnt)
509{
510 int ncur = cur + 1;
511
512 do
513 ncur <<= 1;
514 while (cnt > ncur);
515
516 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
517 if (elem * ncur > 4096)
518 {
519 ncur *= elem;
520 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
521 ncur = ncur - sizeof (void *) * 4;
522 ncur /= elem;
523 }
524
525 return ncur;
526}
527
528static noinline void *
529array_realloc (int elem, void *base, int *cur, int cnt)
530{
531 *cur = array_nextsize (elem, *cur, cnt);
532 return ev_realloc (base, elem * *cur);
533}
360 534
361#define array_needsize(type,base,cur,cnt,init) \ 535#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 536 if (expect_false ((cnt) > (cur))) \
363 { \ 537 { \
364 int newcnt = cur; \ 538 int ocur_ = (cur); \
365 do \ 539 (base) = (type *)array_realloc \
366 { \ 540 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 541 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 } 542 }
375 543
544#if 0
376#define array_slim(type,stem) \ 545#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 546 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 547 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 548 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 549 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 550 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 551 }
552#endif
383 553
384#define array_free(stem, idx) \ 554#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 555 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386 556
387/*****************************************************************************/ 557/*****************************************************************************/
388 558
389void noinline 559void noinline
390ev_feed_event (EV_P_ void *w, int revents) 560ev_feed_event (EV_P_ void *w, int revents)
391{ 561{
392 W w_ = (W)w; 562 W w_ = (W)w;
563 int pri = ABSPRI (w_);
393 564
394 if (expect_false (w_->pending)) 565 if (expect_false (w_->pending))
566 pendings [pri][w_->pending - 1].events |= revents;
567 else
395 { 568 {
569 w_->pending = ++pendingcnt [pri];
570 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
571 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 572 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 573 }
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} 574}
405 575
406void inline_size 576void inline_speed
407queue_events (EV_P_ W *events, int eventcnt, int type) 577queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 578{
409 int i; 579 int i;
410 580
411 for (i = 0; i < eventcnt; ++i) 581 for (i = 0; i < eventcnt; ++i)
… …
443} 613}
444 614
445void 615void
446ev_feed_fd_event (EV_P_ int fd, int revents) 616ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 617{
618 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 619 fd_event (EV_A_ fd, revents);
449} 620}
450 621
451void inline_size 622void inline_size
452fd_reify (EV_P) 623fd_reify (EV_P)
453{ 624{
… …
457 { 628 {
458 int fd = fdchanges [i]; 629 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 630 ANFD *anfd = anfds + fd;
460 ev_io *w; 631 ev_io *w;
461 632
462 int events = 0; 633 unsigned char events = 0;
463 634
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 635 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465 events |= w->events; 636 events |= (unsigned char)w->events;
466 637
467#if EV_SELECT_IS_WINSOCKET 638#if EV_SELECT_IS_WINSOCKET
468 if (events) 639 if (events)
469 { 640 {
470 unsigned long argp; 641 unsigned long argp;
642 #ifdef EV_FD_TO_WIN32_HANDLE
643 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
644 #else
471 anfd->handle = _get_osfhandle (fd); 645 anfd->handle = _get_osfhandle (fd);
646 #endif
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 647 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473 } 648 }
474#endif 649#endif
475 650
651 {
652 unsigned char o_events = anfd->events;
653 unsigned char o_reify = anfd->reify;
654
476 anfd->reify = 0; 655 anfd->reify = 0;
477
478 backend_modify (EV_A_ fd, anfd->events, events);
479 anfd->events = events; 656 anfd->events = events;
657
658 if (o_events != events || o_reify & EV_IOFDSET)
659 backend_modify (EV_A_ fd, o_events, events);
660 }
480 } 661 }
481 662
482 fdchangecnt = 0; 663 fdchangecnt = 0;
483} 664}
484 665
485void inline_size 666void inline_size
486fd_change (EV_P_ int fd) 667fd_change (EV_P_ int fd, int flags)
487{ 668{
488 if (expect_false (anfds [fd].reify)) 669 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 670 anfds [fd].reify |= flags;
492 671
672 if (expect_true (!reify))
673 {
493 ++fdchangecnt; 674 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 675 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 676 fdchanges [fdchangecnt - 1] = fd;
677 }
496} 678}
497 679
498void inline_speed 680void inline_speed
499fd_kill (EV_P_ int fd) 681fd_kill (EV_P_ int fd)
500{ 682{
… …
547static void noinline 729static void noinline
548fd_rearm_all (EV_P) 730fd_rearm_all (EV_P)
549{ 731{
550 int fd; 732 int fd;
551 733
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 734 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 735 if (anfds [fd].events)
555 { 736 {
556 anfds [fd].events = 0; 737 anfds [fd].events = 0;
557 fd_change (EV_A_ fd); 738 fd_change (EV_A_ fd, EV_IOFDSET | 1);
558 } 739 }
559} 740}
560 741
561/*****************************************************************************/ 742/*****************************************************************************/
562 743
563void inline_speed 744void inline_speed
564upheap (WT *heap, int k) 745upheap (WT *heap, int k)
565{ 746{
566 WT w = heap [k]; 747 WT w = heap [k];
567 748
568 while (k && heap [k >> 1]->at > w->at) 749 while (k)
569 { 750 {
751 int p = (k - 1) >> 1;
752
753 if (heap [p]->at <= w->at)
754 break;
755
570 heap [k] = heap [k >> 1]; 756 heap [k] = heap [p];
571 ((W)heap [k])->active = k + 1; 757 ((W)heap [k])->active = k + 1;
572 k >>= 1; 758 k = p;
573 } 759 }
574 760
575 heap [k] = w; 761 heap [k] = w;
576 ((W)heap [k])->active = k + 1; 762 ((W)heap [k])->active = k + 1;
577
578} 763}
579 764
580void inline_speed 765void inline_speed
581downheap (WT *heap, int N, int k) 766downheap (WT *heap, int N, int k)
582{ 767{
583 WT w = heap [k]; 768 WT w = heap [k];
584 769
585 while (k < (N >> 1)) 770 for (;;)
586 { 771 {
587 int j = k << 1; 772 int c = (k << 1) + 1;
588 773
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 774 if (c >= N)
590 ++j;
591
592 if (w->at <= heap [j]->at)
593 break; 775 break;
594 776
777 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
778 ? 1 : 0;
779
780 if (w->at <= heap [c]->at)
781 break;
782
595 heap [k] = heap [j]; 783 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 784 ((W)heap [k])->active = k + 1;
785
597 k = j; 786 k = c;
598 } 787 }
599 788
600 heap [k] = w; 789 heap [k] = w;
601 ((W)heap [k])->active = k + 1; 790 ((W)heap [k])->active = k + 1;
602} 791}
… …
611/*****************************************************************************/ 800/*****************************************************************************/
612 801
613typedef struct 802typedef struct
614{ 803{
615 WL head; 804 WL head;
616 sig_atomic_t volatile gotsig; 805 EV_ATOMIC_T gotsig;
617} ANSIG; 806} ANSIG;
618 807
619static ANSIG *signals; 808static ANSIG *signals;
620static int signalmax; 809static int signalmax;
621 810
622static int sigpipe [2]; 811static EV_ATOMIC_T gotsig;
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625 812
626void inline_size 813void inline_size
627signals_init (ANSIG *base, int count) 814signals_init (ANSIG *base, int count)
628{ 815{
629 while (count--) 816 while (count--)
… …
633 820
634 ++base; 821 ++base;
635 } 822 }
636} 823}
637 824
638static void 825/*****************************************************************************/
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644 826
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 827void inline_speed
690fd_intern (int fd) 828fd_intern (int fd)
691{ 829{
692#ifdef _WIN32 830#ifdef _WIN32
693 int arg = 1; 831 int arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
697 fcntl (fd, F_SETFL, O_NONBLOCK); 835 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 836#endif
699} 837}
700 838
701static void noinline 839static void noinline
702siginit (EV_P) 840evpipe_init (EV_P)
703{ 841{
842 if (!ev_is_active (&pipeev))
843 {
844#if EV_USE_EVENTFD
845 if ((evfd = eventfd (0, 0)) >= 0)
846 {
847 evpipe [0] = -1;
848 fd_intern (evfd);
849 ev_io_set (&pipeev, evfd, EV_READ);
850 }
851 else
852#endif
853 {
854 while (pipe (evpipe))
855 syserr ("(libev) error creating signal/async pipe");
856
704 fd_intern (sigpipe [0]); 857 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 858 fd_intern (evpipe [1]);
859 ev_io_set (&pipeev, evpipe [0], EV_READ);
860 }
706 861
707 ev_io_set (&sigev, sigpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 862 ev_io_start (EV_A_ &pipeev);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 863 ev_unref (EV_A); /* watcher should not keep loop alive */
864 }
865}
866
867void inline_size
868evpipe_write (EV_P_ EV_ATOMIC_T *flag)
869{
870 if (!*flag)
871 {
872 int old_errno = errno; /* save errno because write might clobber it */
873
874 *flag = 1;
875
876#if EV_USE_EVENTFD
877 if (evfd >= 0)
878 {
879 uint64_t counter = 1;
880 write (evfd, &counter, sizeof (uint64_t));
881 }
882 else
883#endif
884 write (evpipe [1], &old_errno, 1);
885
886 errno = old_errno;
887 }
888}
889
890static void
891pipecb (EV_P_ ev_io *iow, int revents)
892{
893#if EV_USE_EVENTFD
894 if (evfd >= 0)
895 {
896 uint64_t counter = 1;
897 read (evfd, &counter, sizeof (uint64_t));
898 }
899 else
900#endif
901 {
902 char dummy;
903 read (evpipe [0], &dummy, 1);
904 }
905
906 if (gotsig && ev_is_default_loop (EV_A))
907 {
908 int signum;
909 gotsig = 0;
910
911 for (signum = signalmax; signum--; )
912 if (signals [signum].gotsig)
913 ev_feed_signal_event (EV_A_ signum + 1);
914 }
915
916#if EV_ASYNC_ENABLE
917 if (gotasync)
918 {
919 int i;
920 gotasync = 0;
921
922 for (i = asynccnt; i--; )
923 if (asyncs [i]->sent)
924 {
925 asyncs [i]->sent = 0;
926 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
927 }
928 }
929#endif
710} 930}
711 931
712/*****************************************************************************/ 932/*****************************************************************************/
713 933
934static void
935ev_sighandler (int signum)
936{
937#if EV_MULTIPLICITY
938 struct ev_loop *loop = &default_loop_struct;
939#endif
940
941#if _WIN32
942 signal (signum, ev_sighandler);
943#endif
944
945 signals [signum - 1].gotsig = 1;
946 evpipe_write (EV_A_ &gotsig);
947}
948
949void noinline
950ev_feed_signal_event (EV_P_ int signum)
951{
952 WL w;
953
954#if EV_MULTIPLICITY
955 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
956#endif
957
958 --signum;
959
960 if (signum < 0 || signum >= signalmax)
961 return;
962
963 signals [signum].gotsig = 0;
964
965 for (w = signals [signum].head; w; w = w->next)
966 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
967}
968
969/*****************************************************************************/
970
714static ev_child *childs [PID_HASHSIZE]; 971static WL childs [EV_PID_HASHSIZE];
715 972
716#ifndef _WIN32 973#ifndef _WIN32
717 974
718static ev_signal childev; 975static ev_signal childev;
719 976
977#ifndef WIFCONTINUED
978# define WIFCONTINUED(status) 0
979#endif
980
720void inline_speed 981void inline_speed
721child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 982child_reap (EV_P_ int chain, int pid, int status)
722{ 983{
723 ev_child *w; 984 ev_child *w;
985 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
724 986
725 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 987 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
988 {
726 if (w->pid == pid || !w->pid) 989 if ((w->pid == pid || !w->pid)
990 && (!traced || (w->flags & 1)))
727 { 991 {
728 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 992 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
729 w->rpid = pid; 993 w->rpid = pid;
730 w->rstatus = status; 994 w->rstatus = status;
731 ev_feed_event (EV_A_ (W)w, EV_CHILD); 995 ev_feed_event (EV_A_ (W)w, EV_CHILD);
732 } 996 }
997 }
733} 998}
734 999
735#ifndef WCONTINUED 1000#ifndef WCONTINUED
736# define WCONTINUED 0 1001# define WCONTINUED 0
737#endif 1002#endif
… …
746 if (!WCONTINUED 1011 if (!WCONTINUED
747 || errno != EINVAL 1012 || errno != EINVAL
748 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1013 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
749 return; 1014 return;
750 1015
751 /* make sure we are called again until all childs have been reaped */ 1016 /* make sure we are called again until all children have been reaped */
752 /* we need to do it this way so that the callback gets called before we continue */ 1017 /* we need to do it this way so that the callback gets called before we continue */
753 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754 1019
755 child_reap (EV_A_ sw, pid, pid, status); 1020 child_reap (EV_A_ pid, pid, status);
1021 if (EV_PID_HASHSIZE > 1)
756 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757} 1023}
758 1024
759#endif 1025#endif
760 1026
761/*****************************************************************************/ 1027/*****************************************************************************/
… …
833} 1099}
834 1100
835unsigned int 1101unsigned int
836ev_embeddable_backends (void) 1102ev_embeddable_backends (void)
837{ 1103{
838 return EVBACKEND_EPOLL 1104 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839 | EVBACKEND_KQUEUE 1105
840 | EVBACKEND_PORT; 1106 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1107 /* please fix it and tell me how to detect the fix */
1108 flags &= ~EVBACKEND_EPOLL;
1109
1110 return flags;
841} 1111}
842 1112
843unsigned int 1113unsigned int
844ev_backend (EV_P) 1114ev_backend (EV_P)
845{ 1115{
846 return backend; 1116 return backend;
847} 1117}
848 1118
849static void 1119unsigned int
1120ev_loop_count (EV_P)
1121{
1122 return loop_count;
1123}
1124
1125void
1126ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1127{
1128 io_blocktime = interval;
1129}
1130
1131void
1132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1133{
1134 timeout_blocktime = interval;
1135}
1136
1137static void noinline
850loop_init (EV_P_ unsigned int flags) 1138loop_init (EV_P_ unsigned int flags)
851{ 1139{
852 if (!backend) 1140 if (!backend)
853 { 1141 {
854#if EV_USE_MONOTONIC 1142#if EV_USE_MONOTONIC
… …
857 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1145 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
858 have_monotonic = 1; 1146 have_monotonic = 1;
859 } 1147 }
860#endif 1148#endif
861 1149
862 ev_rt_now = ev_time (); 1150 ev_rt_now = ev_time ();
863 mn_now = get_clock (); 1151 mn_now = get_clock ();
864 now_floor = mn_now; 1152 now_floor = mn_now;
865 rtmn_diff = ev_rt_now - mn_now; 1153 rtmn_diff = ev_rt_now - mn_now;
1154
1155 io_blocktime = 0.;
1156 timeout_blocktime = 0.;
1157 backend = 0;
1158 backend_fd = -1;
1159 gotasync = 0;
1160#if EV_USE_INOTIFY
1161 fs_fd = -2;
1162#endif
1163
1164 /* pid check not overridable via env */
1165#ifndef _WIN32
1166 if (flags & EVFLAG_FORKCHECK)
1167 curpid = getpid ();
1168#endif
866 1169
867 if (!(flags & EVFLAG_NOENV) 1170 if (!(flags & EVFLAG_NOENV)
868 && !enable_secure () 1171 && !enable_secure ()
869 && getenv ("LIBEV_FLAGS")) 1172 && getenv ("LIBEV_FLAGS"))
870 flags = atoi (getenv ("LIBEV_FLAGS")); 1173 flags = atoi (getenv ("LIBEV_FLAGS"));
871 1174
872 if (!(flags & 0x0000ffffUL)) 1175 if (!(flags & 0x0000ffffUL))
873 flags |= ev_recommended_backends (); 1176 flags |= ev_recommended_backends ();
874 1177
875 backend = 0;
876#if EV_USE_PORT 1178#if EV_USE_PORT
877 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1179 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878#endif 1180#endif
879#if EV_USE_KQUEUE 1181#if EV_USE_KQUEUE
880 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1182 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
887#endif 1189#endif
888#if EV_USE_SELECT 1190#if EV_USE_SELECT
889 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1191 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
890#endif 1192#endif
891 1193
892 ev_init (&sigev, sigcb); 1194 ev_init (&pipeev, pipecb);
893 ev_set_priority (&sigev, EV_MAXPRI); 1195 ev_set_priority (&pipeev, EV_MAXPRI);
894 } 1196 }
895} 1197}
896 1198
897static void 1199static void noinline
898loop_destroy (EV_P) 1200loop_destroy (EV_P)
899{ 1201{
900 int i; 1202 int i;
1203
1204 if (ev_is_active (&pipeev))
1205 {
1206 ev_ref (EV_A); /* signal watcher */
1207 ev_io_stop (EV_A_ &pipeev);
1208
1209#if EV_USE_EVENTFD
1210 if (evfd >= 0)
1211 close (evfd);
1212#endif
1213
1214 if (evpipe [0] >= 0)
1215 {
1216 close (evpipe [0]);
1217 close (evpipe [1]);
1218 }
1219 }
1220
1221#if EV_USE_INOTIFY
1222 if (fs_fd >= 0)
1223 close (fs_fd);
1224#endif
1225
1226 if (backend_fd >= 0)
1227 close (backend_fd);
901 1228
902#if EV_USE_PORT 1229#if EV_USE_PORT
903 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1230 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904#endif 1231#endif
905#if EV_USE_KQUEUE 1232#if EV_USE_KQUEUE
… …
914#if EV_USE_SELECT 1241#if EV_USE_SELECT
915 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1242 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916#endif 1243#endif
917 1244
918 for (i = NUMPRI; i--; ) 1245 for (i = NUMPRI; i--; )
1246 {
919 array_free (pending, [i]); 1247 array_free (pending, [i]);
1248#if EV_IDLE_ENABLE
1249 array_free (idle, [i]);
1250#endif
1251 }
1252
1253 ev_free (anfds); anfdmax = 0;
920 1254
921 /* have to use the microsoft-never-gets-it-right macro */ 1255 /* have to use the microsoft-never-gets-it-right macro */
922 array_free (fdchange, EMPTY0); 1256 array_free (fdchange, EMPTY);
923 array_free (timer, EMPTY0); 1257 array_free (timer, EMPTY);
924#if EV_PERIODIC_ENABLE 1258#if EV_PERIODIC_ENABLE
925 array_free (periodic, EMPTY0); 1259 array_free (periodic, EMPTY);
926#endif 1260#endif
1261#if EV_FORK_ENABLE
927 array_free (idle, EMPTY0); 1262 array_free (fork, EMPTY);
1263#endif
928 array_free (prepare, EMPTY0); 1264 array_free (prepare, EMPTY);
929 array_free (check, EMPTY0); 1265 array_free (check, EMPTY);
1266#if EV_ASYNC_ENABLE
1267 array_free (async, EMPTY);
1268#endif
930 1269
931 backend = 0; 1270 backend = 0;
932} 1271}
933 1272
934static void 1273void inline_size infy_fork (EV_P);
1274
1275void inline_size
935loop_fork (EV_P) 1276loop_fork (EV_P)
936{ 1277{
937#if EV_USE_PORT 1278#if EV_USE_PORT
938 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1279 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939#endif 1280#endif
… …
941 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1282 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942#endif 1283#endif
943#if EV_USE_EPOLL 1284#if EV_USE_EPOLL
944 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1285 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
945#endif 1286#endif
1287#if EV_USE_INOTIFY
1288 infy_fork (EV_A);
1289#endif
946 1290
947 if (ev_is_active (&sigev)) 1291 if (ev_is_active (&pipeev))
948 { 1292 {
949 /* default loop */ 1293 /* this "locks" the handlers against writing to the pipe */
1294 /* while we modify the fd vars */
1295 gotsig = 1;
1296#if EV_ASYNC_ENABLE
1297 gotasync = 1;
1298#endif
950 1299
951 ev_ref (EV_A); 1300 ev_ref (EV_A);
952 ev_io_stop (EV_A_ &sigev); 1301 ev_io_stop (EV_A_ &pipeev);
1302
1303#if EV_USE_EVENTFD
1304 if (evfd >= 0)
1305 close (evfd);
1306#endif
1307
1308 if (evpipe [0] >= 0)
1309 {
953 close (sigpipe [0]); 1310 close (evpipe [0]);
954 close (sigpipe [1]); 1311 close (evpipe [1]);
1312 }
955 1313
956 while (pipe (sigpipe))
957 syserr ("(libev) error creating pipe");
958
959 siginit (EV_A); 1314 evpipe_init (EV_A);
1315 /* now iterate over everything, in case we missed something */
1316 pipecb (EV_A_ &pipeev, EV_READ);
960 } 1317 }
961 1318
962 postfork = 0; 1319 postfork = 0;
963} 1320}
964 1321
… …
986} 1343}
987 1344
988void 1345void
989ev_loop_fork (EV_P) 1346ev_loop_fork (EV_P)
990{ 1347{
991 postfork = 1; 1348 postfork = 1; /* must be in line with ev_default_fork */
992} 1349}
993 1350
994#endif 1351#endif
995 1352
996#if EV_MULTIPLICITY 1353#if EV_MULTIPLICITY
… …
999#else 1356#else
1000int 1357int
1001ev_default_loop (unsigned int flags) 1358ev_default_loop (unsigned int flags)
1002#endif 1359#endif
1003{ 1360{
1004 if (sigpipe [0] == sigpipe [1])
1005 if (pipe (sigpipe))
1006 return 0;
1007
1008 if (!ev_default_loop_ptr) 1361 if (!ev_default_loop_ptr)
1009 { 1362 {
1010#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
1011 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1364 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1012#else 1365#else
… …
1015 1368
1016 loop_init (EV_A_ flags); 1369 loop_init (EV_A_ flags);
1017 1370
1018 if (ev_backend (EV_A)) 1371 if (ev_backend (EV_A))
1019 { 1372 {
1020 siginit (EV_A);
1021
1022#ifndef _WIN32 1373#ifndef _WIN32
1023 ev_signal_init (&childev, childcb, SIGCHLD); 1374 ev_signal_init (&childev, childcb, SIGCHLD);
1024 ev_set_priority (&childev, EV_MAXPRI); 1375 ev_set_priority (&childev, EV_MAXPRI);
1025 ev_signal_start (EV_A_ &childev); 1376 ev_signal_start (EV_A_ &childev);
1026 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1377 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1043#ifndef _WIN32 1394#ifndef _WIN32
1044 ev_ref (EV_A); /* child watcher */ 1395 ev_ref (EV_A); /* child watcher */
1045 ev_signal_stop (EV_A_ &childev); 1396 ev_signal_stop (EV_A_ &childev);
1046#endif 1397#endif
1047 1398
1048 ev_ref (EV_A); /* signal watcher */
1049 ev_io_stop (EV_A_ &sigev);
1050
1051 close (sigpipe [0]); sigpipe [0] = 0;
1052 close (sigpipe [1]); sigpipe [1] = 0;
1053
1054 loop_destroy (EV_A); 1399 loop_destroy (EV_A);
1055} 1400}
1056 1401
1057void 1402void
1058ev_default_fork (void) 1403ev_default_fork (void)
… …
1060#if EV_MULTIPLICITY 1405#if EV_MULTIPLICITY
1061 struct ev_loop *loop = ev_default_loop_ptr; 1406 struct ev_loop *loop = ev_default_loop_ptr;
1062#endif 1407#endif
1063 1408
1064 if (backend) 1409 if (backend)
1065 postfork = 1; 1410 postfork = 1; /* must be in line with ev_loop_fork */
1066} 1411}
1067 1412
1068/*****************************************************************************/ 1413/*****************************************************************************/
1069 1414
1070int inline_size 1415void
1071any_pending (EV_P) 1416ev_invoke (EV_P_ void *w, int revents)
1072{ 1417{
1073 int pri; 1418 EV_CB_INVOKE ((W)w, revents);
1074
1075 for (pri = NUMPRI; pri--; )
1076 if (pendingcnt [pri])
1077 return 1;
1078
1079 return 0;
1080} 1419}
1081 1420
1082void inline_speed 1421void inline_speed
1083call_pending (EV_P) 1422call_pending (EV_P)
1084{ 1423{
… …
1089 { 1428 {
1090 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1429 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091 1430
1092 if (expect_true (p->w)) 1431 if (expect_true (p->w))
1093 { 1432 {
1094 assert (("non-pending watcher on pending list", p->w->pending)); 1433 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1095 1434
1096 p->w->pending = 0; 1435 p->w->pending = 0;
1097 EV_CB_INVOKE (p->w, p->events); 1436 EV_CB_INVOKE (p->w, p->events);
1098 } 1437 }
1099 } 1438 }
… …
1102void inline_size 1441void inline_size
1103timers_reify (EV_P) 1442timers_reify (EV_P)
1104{ 1443{
1105 while (timercnt && ((WT)timers [0])->at <= mn_now) 1444 while (timercnt && ((WT)timers [0])->at <= mn_now)
1106 { 1445 {
1107 ev_timer *w = timers [0]; 1446 ev_timer *w = (ev_timer *)timers [0];
1108 1447
1109 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1448 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1110 1449
1111 /* first reschedule or stop timer */ 1450 /* first reschedule or stop timer */
1112 if (w->repeat) 1451 if (w->repeat)
1113 { 1452 {
1114 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1453 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115 1454
1116 ((WT)w)->at += w->repeat; 1455 ((WT)w)->at += w->repeat;
1117 if (((WT)w)->at < mn_now) 1456 if (((WT)w)->at < mn_now)
1118 ((WT)w)->at = mn_now; 1457 ((WT)w)->at = mn_now;
1119 1458
1120 downheap ((WT *)timers, timercnt, 0); 1459 downheap (timers, timercnt, 0);
1121 } 1460 }
1122 else 1461 else
1123 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1462 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124 1463
1125 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1464 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1130void inline_size 1469void inline_size
1131periodics_reify (EV_P) 1470periodics_reify (EV_P)
1132{ 1471{
1133 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1472 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134 { 1473 {
1135 ev_periodic *w = periodics [0]; 1474 ev_periodic *w = (ev_periodic *)periodics [0];
1136 1475
1137 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1476 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1138 1477
1139 /* first reschedule or stop timer */ 1478 /* first reschedule or stop timer */
1140 if (w->reschedule_cb) 1479 if (w->reschedule_cb)
1141 { 1480 {
1142 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1481 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1143 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1482 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144 downheap ((WT *)periodics, periodiccnt, 0); 1483 downheap (periodics, periodiccnt, 0);
1145 } 1484 }
1146 else if (w->interval) 1485 else if (w->interval)
1147 { 1486 {
1148 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1487 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1488 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1149 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1489 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150 downheap ((WT *)periodics, periodiccnt, 0); 1490 downheap (periodics, periodiccnt, 0);
1151 } 1491 }
1152 else 1492 else
1153 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1493 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154 1494
1155 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1495 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1162 int i; 1502 int i;
1163 1503
1164 /* adjust periodics after time jump */ 1504 /* adjust periodics after time jump */
1165 for (i = 0; i < periodiccnt; ++i) 1505 for (i = 0; i < periodiccnt; ++i)
1166 { 1506 {
1167 ev_periodic *w = periodics [i]; 1507 ev_periodic *w = (ev_periodic *)periodics [i];
1168 1508
1169 if (w->reschedule_cb) 1509 if (w->reschedule_cb)
1170 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1510 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171 else if (w->interval) 1511 else if (w->interval)
1172 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1512 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173 } 1513 }
1174 1514
1175 /* now rebuild the heap */ 1515 /* now rebuild the heap */
1176 for (i = periodiccnt >> 1; i--; ) 1516 for (i = periodiccnt >> 1; i--; )
1177 downheap ((WT *)periodics, periodiccnt, i); 1517 downheap (periodics, periodiccnt, i);
1178} 1518}
1179#endif 1519#endif
1180 1520
1521#if EV_IDLE_ENABLE
1181int inline_size 1522void inline_size
1182time_update_monotonic (EV_P) 1523idle_reify (EV_P)
1183{ 1524{
1525 if (expect_false (idleall))
1526 {
1527 int pri;
1528
1529 for (pri = NUMPRI; pri--; )
1530 {
1531 if (pendingcnt [pri])
1532 break;
1533
1534 if (idlecnt [pri])
1535 {
1536 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1537 break;
1538 }
1539 }
1540 }
1541}
1542#endif
1543
1544void inline_speed
1545time_update (EV_P_ ev_tstamp max_block)
1546{
1547 int i;
1548
1549#if EV_USE_MONOTONIC
1550 if (expect_true (have_monotonic))
1551 {
1552 ev_tstamp odiff = rtmn_diff;
1553
1184 mn_now = get_clock (); 1554 mn_now = get_clock ();
1185 1555
1556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1557 /* interpolate in the meantime */
1186 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1558 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187 { 1559 {
1188 ev_rt_now = rtmn_diff + mn_now; 1560 ev_rt_now = rtmn_diff + mn_now;
1189 return 0; 1561 return;
1190 } 1562 }
1191 else 1563
1192 {
1193 now_floor = mn_now; 1564 now_floor = mn_now;
1194 ev_rt_now = ev_time (); 1565 ev_rt_now = ev_time ();
1195 return 1;
1196 }
1197}
1198 1566
1199void inline_size 1567 /* loop a few times, before making important decisions.
1200time_update (EV_P) 1568 * on the choice of "4": one iteration isn't enough,
1201{ 1569 * in case we get preempted during the calls to
1202 int i; 1570 * ev_time and get_clock. a second call is almost guaranteed
1203 1571 * to succeed in that case, though. and looping a few more times
1204#if EV_USE_MONOTONIC 1572 * doesn't hurt either as we only do this on time-jumps or
1205 if (expect_true (have_monotonic)) 1573 * in the unlikely event of having been preempted here.
1206 { 1574 */
1207 if (time_update_monotonic (EV_A)) 1575 for (i = 4; --i; )
1208 { 1576 {
1209 ev_tstamp odiff = rtmn_diff;
1210
1211 /* loop a few times, before making important decisions.
1212 * on the choice of "4": one iteration isn't enough,
1213 * in case we get preempted during the calls to
1214 * ev_time and get_clock. a second call is almost guarenteed
1215 * to succeed in that case, though. and looping a few more times
1216 * doesn't hurt either as we only do this on time-jumps or
1217 * in the unlikely event of getting preempted here.
1218 */
1219 for (i = 4; --i; )
1220 {
1221 rtmn_diff = ev_rt_now - mn_now; 1577 rtmn_diff = ev_rt_now - mn_now;
1222 1578
1223 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1579 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224 return; /* all is well */ 1580 return; /* all is well */
1225 1581
1226 ev_rt_now = ev_time (); 1582 ev_rt_now = ev_time ();
1227 mn_now = get_clock (); 1583 mn_now = get_clock ();
1228 now_floor = mn_now; 1584 now_floor = mn_now;
1229 } 1585 }
1230 1586
1231# if EV_PERIODIC_ENABLE 1587# if EV_PERIODIC_ENABLE
1232 periodics_reschedule (EV_A); 1588 periodics_reschedule (EV_A);
1233# endif 1589# endif
1234 /* no timer adjustment, as the monotonic clock doesn't jump */ 1590 /* no timer adjustment, as the monotonic clock doesn't jump */
1235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1591 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236 }
1237 } 1592 }
1238 else 1593 else
1239#endif 1594#endif
1240 { 1595 {
1241 ev_rt_now = ev_time (); 1596 ev_rt_now = ev_time ();
1242 1597
1243 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1598 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244 { 1599 {
1245#if EV_PERIODIC_ENABLE 1600#if EV_PERIODIC_ENABLE
1246 periodics_reschedule (EV_A); 1601 periodics_reschedule (EV_A);
1247#endif 1602#endif
1248
1249 /* adjust timers. this is easy, as the offset is the same for all */ 1603 /* adjust timers. this is easy, as the offset is the same for all of them */
1250 for (i = 0; i < timercnt; ++i) 1604 for (i = 0; i < timercnt; ++i)
1251 ((WT)timers [i])->at += ev_rt_now - mn_now; 1605 ((WT)timers [i])->at += ev_rt_now - mn_now;
1252 } 1606 }
1253 1607
1254 mn_now = ev_rt_now; 1608 mn_now = ev_rt_now;
… …
1270static int loop_done; 1624static int loop_done;
1271 1625
1272void 1626void
1273ev_loop (EV_P_ int flags) 1627ev_loop (EV_P_ int flags)
1274{ 1628{
1275 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1629 loop_done = EVUNLOOP_CANCEL;
1276 ? EVUNLOOP_ONE
1277 : EVUNLOOP_CANCEL;
1278 1630
1279 while (activecnt) 1631 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1632
1633 do
1280 { 1634 {
1635#ifndef _WIN32
1636 if (expect_false (curpid)) /* penalise the forking check even more */
1637 if (expect_false (getpid () != curpid))
1638 {
1639 curpid = getpid ();
1640 postfork = 1;
1641 }
1642#endif
1643
1644#if EV_FORK_ENABLE
1645 /* we might have forked, so queue fork handlers */
1646 if (expect_false (postfork))
1647 if (forkcnt)
1648 {
1649 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1650 call_pending (EV_A);
1651 }
1652#endif
1653
1281 /* queue check watchers (and execute them) */ 1654 /* queue prepare watchers (and execute them) */
1282 if (expect_false (preparecnt)) 1655 if (expect_false (preparecnt))
1283 { 1656 {
1284 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1657 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285 call_pending (EV_A); 1658 call_pending (EV_A);
1286 } 1659 }
1287 1660
1661 if (expect_false (!activecnt))
1662 break;
1663
1288 /* we might have forked, so reify kernel state if necessary */ 1664 /* we might have forked, so reify kernel state if necessary */
1289 if (expect_false (postfork)) 1665 if (expect_false (postfork))
1290 loop_fork (EV_A); 1666 loop_fork (EV_A);
1291 1667
1292 /* update fd-related kernel structures */ 1668 /* update fd-related kernel structures */
1293 fd_reify (EV_A); 1669 fd_reify (EV_A);
1294 1670
1295 /* calculate blocking time */ 1671 /* calculate blocking time */
1296 { 1672 {
1297 double block; 1673 ev_tstamp waittime = 0.;
1674 ev_tstamp sleeptime = 0.;
1298 1675
1299 if (flags & EVLOOP_NONBLOCK || idlecnt) 1676 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1300 block = 0.; /* do not block at all */
1301 else
1302 { 1677 {
1303 /* update time to cancel out callback processing overhead */ 1678 /* update time to cancel out callback processing overhead */
1304#if EV_USE_MONOTONIC
1305 if (expect_true (have_monotonic))
1306 time_update_monotonic (EV_A); 1679 time_update (EV_A_ 1e100);
1307 else
1308#endif
1309 {
1310 ev_rt_now = ev_time ();
1311 mn_now = ev_rt_now;
1312 }
1313 1680
1314 block = MAX_BLOCKTIME; 1681 waittime = MAX_BLOCKTIME;
1315 1682
1316 if (timercnt) 1683 if (timercnt)
1317 { 1684 {
1318 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1685 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1319 if (block > to) block = to; 1686 if (waittime > to) waittime = to;
1320 } 1687 }
1321 1688
1322#if EV_PERIODIC_ENABLE 1689#if EV_PERIODIC_ENABLE
1323 if (periodiccnt) 1690 if (periodiccnt)
1324 { 1691 {
1325 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1692 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1326 if (block > to) block = to; 1693 if (waittime > to) waittime = to;
1327 } 1694 }
1328#endif 1695#endif
1329 1696
1330 if (expect_false (block < 0.)) block = 0.; 1697 if (expect_false (waittime < timeout_blocktime))
1698 waittime = timeout_blocktime;
1699
1700 sleeptime = waittime - backend_fudge;
1701
1702 if (expect_true (sleeptime > io_blocktime))
1703 sleeptime = io_blocktime;
1704
1705 if (sleeptime)
1706 {
1707 ev_sleep (sleeptime);
1708 waittime -= sleeptime;
1709 }
1331 } 1710 }
1332 1711
1712 ++loop_count;
1333 backend_poll (EV_A_ block); 1713 backend_poll (EV_A_ waittime);
1714
1715 /* update ev_rt_now, do magic */
1716 time_update (EV_A_ waittime + sleeptime);
1334 } 1717 }
1335
1336 /* update ev_rt_now, do magic */
1337 time_update (EV_A);
1338 1718
1339 /* queue pending timers and reschedule them */ 1719 /* queue pending timers and reschedule them */
1340 timers_reify (EV_A); /* relative timers called last */ 1720 timers_reify (EV_A); /* relative timers called last */
1341#if EV_PERIODIC_ENABLE 1721#if EV_PERIODIC_ENABLE
1342 periodics_reify (EV_A); /* absolute timers called first */ 1722 periodics_reify (EV_A); /* absolute timers called first */
1343#endif 1723#endif
1344 1724
1725#if EV_IDLE_ENABLE
1345 /* queue idle watchers unless other events are pending */ 1726 /* queue idle watchers unless other events are pending */
1346 if (idlecnt && !any_pending (EV_A)) 1727 idle_reify (EV_A);
1347 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1728#endif
1348 1729
1349 /* queue check watchers, to be executed first */ 1730 /* queue check watchers, to be executed first */
1350 if (expect_false (checkcnt)) 1731 if (expect_false (checkcnt))
1351 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1732 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352 1733
1353 call_pending (EV_A); 1734 call_pending (EV_A);
1354
1355 if (expect_false (loop_done))
1356 break;
1357 } 1735 }
1736 while (expect_true (
1737 activecnt
1738 && !loop_done
1739 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1740 ));
1358 1741
1359 if (loop_done == EVUNLOOP_ONE) 1742 if (loop_done == EVUNLOOP_ONE)
1360 loop_done = EVUNLOOP_CANCEL; 1743 loop_done = EVUNLOOP_CANCEL;
1361} 1744}
1362 1745
… …
1389 head = &(*head)->next; 1772 head = &(*head)->next;
1390 } 1773 }
1391} 1774}
1392 1775
1393void inline_speed 1776void inline_speed
1394ev_clear_pending (EV_P_ W w) 1777clear_pending (EV_P_ W w)
1395{ 1778{
1396 if (w->pending) 1779 if (w->pending)
1397 { 1780 {
1398 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1781 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399 w->pending = 0; 1782 w->pending = 0;
1400 } 1783 }
1401} 1784}
1402 1785
1786int
1787ev_clear_pending (EV_P_ void *w)
1788{
1789 W w_ = (W)w;
1790 int pending = w_->pending;
1791
1792 if (expect_true (pending))
1793 {
1794 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1795 w_->pending = 0;
1796 p->w = 0;
1797 return p->events;
1798 }
1799 else
1800 return 0;
1801}
1802
1803void inline_size
1804pri_adjust (EV_P_ W w)
1805{
1806 int pri = w->priority;
1807 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1808 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1809 w->priority = pri;
1810}
1811
1403void inline_speed 1812void inline_speed
1404ev_start (EV_P_ W w, int active) 1813ev_start (EV_P_ W w, int active)
1405{ 1814{
1406 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1815 pri_adjust (EV_A_ w);
1407 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409 w->active = active; 1816 w->active = active;
1410 ev_ref (EV_A); 1817 ev_ref (EV_A);
1411} 1818}
1412 1819
1413void inline_size 1820void inline_size
… …
1417 w->active = 0; 1824 w->active = 0;
1418} 1825}
1419 1826
1420/*****************************************************************************/ 1827/*****************************************************************************/
1421 1828
1422void 1829void noinline
1423ev_io_start (EV_P_ ev_io *w) 1830ev_io_start (EV_P_ ev_io *w)
1424{ 1831{
1425 int fd = w->fd; 1832 int fd = w->fd;
1426 1833
1427 if (expect_false (ev_is_active (w))) 1834 if (expect_false (ev_is_active (w)))
… …
1429 1836
1430 assert (("ev_io_start called with negative fd", fd >= 0)); 1837 assert (("ev_io_start called with negative fd", fd >= 0));
1431 1838
1432 ev_start (EV_A_ (W)w, 1); 1839 ev_start (EV_A_ (W)w, 1);
1433 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1840 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1434 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1841 wlist_add (&anfds[fd].head, (WL)w);
1435 1842
1436 fd_change (EV_A_ fd); 1843 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1844 w->events &= ~EV_IOFDSET;
1437} 1845}
1438 1846
1439void 1847void noinline
1440ev_io_stop (EV_P_ ev_io *w) 1848ev_io_stop (EV_P_ ev_io *w)
1441{ 1849{
1442 ev_clear_pending (EV_A_ (W)w); 1850 clear_pending (EV_A_ (W)w);
1443 if (expect_false (!ev_is_active (w))) 1851 if (expect_false (!ev_is_active (w)))
1444 return; 1852 return;
1445 1853
1446 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1854 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447 1855
1448 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1856 wlist_del (&anfds[w->fd].head, (WL)w);
1449 ev_stop (EV_A_ (W)w); 1857 ev_stop (EV_A_ (W)w);
1450 1858
1451 fd_change (EV_A_ w->fd); 1859 fd_change (EV_A_ w->fd, 1);
1452} 1860}
1453 1861
1454void 1862void noinline
1455ev_timer_start (EV_P_ ev_timer *w) 1863ev_timer_start (EV_P_ ev_timer *w)
1456{ 1864{
1457 if (expect_false (ev_is_active (w))) 1865 if (expect_false (ev_is_active (w)))
1458 return; 1866 return;
1459 1867
1460 ((WT)w)->at += mn_now; 1868 ((WT)w)->at += mn_now;
1461 1869
1462 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1870 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463 1871
1464 ev_start (EV_A_ (W)w, ++timercnt); 1872 ev_start (EV_A_ (W)w, ++timercnt);
1465 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1873 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1466 timers [timercnt - 1] = w; 1874 timers [timercnt - 1] = (WT)w;
1467 upheap ((WT *)timers, timercnt - 1); 1875 upheap (timers, timercnt - 1);
1468 1876
1469 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1877 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1470} 1878}
1471 1879
1472void 1880void noinline
1473ev_timer_stop (EV_P_ ev_timer *w) 1881ev_timer_stop (EV_P_ ev_timer *w)
1474{ 1882{
1475 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1476 if (expect_false (!ev_is_active (w))) 1884 if (expect_false (!ev_is_active (w)))
1477 return; 1885 return;
1478 1886
1479 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1887 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1480 1888
1889 {
1890 int active = ((W)w)->active;
1891
1481 if (expect_true (((W)w)->active < timercnt--)) 1892 if (expect_true (--active < --timercnt))
1482 { 1893 {
1483 timers [((W)w)->active - 1] = timers [timercnt]; 1894 timers [active] = timers [timercnt];
1484 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1895 adjustheap (timers, timercnt, active);
1485 } 1896 }
1897 }
1486 1898
1487 ((WT)w)->at -= mn_now; 1899 ((WT)w)->at -= mn_now;
1488 1900
1489 ev_stop (EV_A_ (W)w); 1901 ev_stop (EV_A_ (W)w);
1490} 1902}
1491 1903
1492void 1904void noinline
1493ev_timer_again (EV_P_ ev_timer *w) 1905ev_timer_again (EV_P_ ev_timer *w)
1494{ 1906{
1495 if (ev_is_active (w)) 1907 if (ev_is_active (w))
1496 { 1908 {
1497 if (w->repeat) 1909 if (w->repeat)
1498 { 1910 {
1499 ((WT)w)->at = mn_now + w->repeat; 1911 ((WT)w)->at = mn_now + w->repeat;
1500 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1912 adjustheap (timers, timercnt, ((W)w)->active - 1);
1501 } 1913 }
1502 else 1914 else
1503 ev_timer_stop (EV_A_ w); 1915 ev_timer_stop (EV_A_ w);
1504 } 1916 }
1505 else if (w->repeat) 1917 else if (w->repeat)
… …
1508 ev_timer_start (EV_A_ w); 1920 ev_timer_start (EV_A_ w);
1509 } 1921 }
1510} 1922}
1511 1923
1512#if EV_PERIODIC_ENABLE 1924#if EV_PERIODIC_ENABLE
1513void 1925void noinline
1514ev_periodic_start (EV_P_ ev_periodic *w) 1926ev_periodic_start (EV_P_ ev_periodic *w)
1515{ 1927{
1516 if (expect_false (ev_is_active (w))) 1928 if (expect_false (ev_is_active (w)))
1517 return; 1929 return;
1518 1930
… …
1520 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1932 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1521 else if (w->interval) 1933 else if (w->interval)
1522 { 1934 {
1523 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1935 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1524 /* this formula differs from the one in periodic_reify because we do not always round up */ 1936 /* this formula differs from the one in periodic_reify because we do not always round up */
1525 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1937 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526 } 1938 }
1939 else
1940 ((WT)w)->at = w->offset;
1527 1941
1528 ev_start (EV_A_ (W)w, ++periodiccnt); 1942 ev_start (EV_A_ (W)w, ++periodiccnt);
1529 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1943 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1530 periodics [periodiccnt - 1] = w; 1944 periodics [periodiccnt - 1] = (WT)w;
1531 upheap ((WT *)periodics, periodiccnt - 1); 1945 upheap (periodics, periodiccnt - 1);
1532 1946
1533 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1947 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1534} 1948}
1535 1949
1536void 1950void noinline
1537ev_periodic_stop (EV_P_ ev_periodic *w) 1951ev_periodic_stop (EV_P_ ev_periodic *w)
1538{ 1952{
1539 ev_clear_pending (EV_A_ (W)w); 1953 clear_pending (EV_A_ (W)w);
1540 if (expect_false (!ev_is_active (w))) 1954 if (expect_false (!ev_is_active (w)))
1541 return; 1955 return;
1542 1956
1543 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1957 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1544 1958
1959 {
1960 int active = ((W)w)->active;
1961
1545 if (expect_true (((W)w)->active < periodiccnt--)) 1962 if (expect_true (--active < --periodiccnt))
1546 { 1963 {
1547 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1964 periodics [active] = periodics [periodiccnt];
1548 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1965 adjustheap (periodics, periodiccnt, active);
1549 } 1966 }
1967 }
1550 1968
1551 ev_stop (EV_A_ (W)w); 1969 ev_stop (EV_A_ (W)w);
1552} 1970}
1553 1971
1554void 1972void noinline
1555ev_periodic_again (EV_P_ ev_periodic *w) 1973ev_periodic_again (EV_P_ ev_periodic *w)
1556{ 1974{
1557 /* TODO: use adjustheap and recalculation */ 1975 /* TODO: use adjustheap and recalculation */
1558 ev_periodic_stop (EV_A_ w); 1976 ev_periodic_stop (EV_A_ w);
1559 ev_periodic_start (EV_A_ w); 1977 ev_periodic_start (EV_A_ w);
1560} 1978}
1561#endif 1979#endif
1562 1980
1981#ifndef SA_RESTART
1982# define SA_RESTART 0
1983#endif
1984
1985void noinline
1986ev_signal_start (EV_P_ ev_signal *w)
1987{
1988#if EV_MULTIPLICITY
1989 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1990#endif
1991 if (expect_false (ev_is_active (w)))
1992 return;
1993
1994 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1995
1996 evpipe_init (EV_A);
1997
1998 {
1999#ifndef _WIN32
2000 sigset_t full, prev;
2001 sigfillset (&full);
2002 sigprocmask (SIG_SETMASK, &full, &prev);
2003#endif
2004
2005 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2006
2007#ifndef _WIN32
2008 sigprocmask (SIG_SETMASK, &prev, 0);
2009#endif
2010 }
2011
2012 ev_start (EV_A_ (W)w, 1);
2013 wlist_add (&signals [w->signum - 1].head, (WL)w);
2014
2015 if (!((WL)w)->next)
2016 {
2017#if _WIN32
2018 signal (w->signum, ev_sighandler);
2019#else
2020 struct sigaction sa;
2021 sa.sa_handler = ev_sighandler;
2022 sigfillset (&sa.sa_mask);
2023 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2024 sigaction (w->signum, &sa, 0);
2025#endif
2026 }
2027}
2028
2029void noinline
2030ev_signal_stop (EV_P_ ev_signal *w)
2031{
2032 clear_pending (EV_A_ (W)w);
2033 if (expect_false (!ev_is_active (w)))
2034 return;
2035
2036 wlist_del (&signals [w->signum - 1].head, (WL)w);
2037 ev_stop (EV_A_ (W)w);
2038
2039 if (!signals [w->signum - 1].head)
2040 signal (w->signum, SIG_DFL);
2041}
2042
2043void
2044ev_child_start (EV_P_ ev_child *w)
2045{
2046#if EV_MULTIPLICITY
2047 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2048#endif
2049 if (expect_false (ev_is_active (w)))
2050 return;
2051
2052 ev_start (EV_A_ (W)w, 1);
2053 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2054}
2055
2056void
2057ev_child_stop (EV_P_ ev_child *w)
2058{
2059 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w)))
2061 return;
2062
2063 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2064 ev_stop (EV_A_ (W)w);
2065}
2066
2067#if EV_STAT_ENABLE
2068
2069# ifdef _WIN32
2070# undef lstat
2071# define lstat(a,b) _stati64 (a,b)
2072# endif
2073
2074#define DEF_STAT_INTERVAL 5.0074891
2075#define MIN_STAT_INTERVAL 0.1074891
2076
2077static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2078
2079#if EV_USE_INOTIFY
2080# define EV_INOTIFY_BUFSIZE 8192
2081
2082static void noinline
2083infy_add (EV_P_ ev_stat *w)
2084{
2085 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);
2086
2087 if (w->wd < 0)
2088 {
2089 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2090
2091 /* monitor some parent directory for speedup hints */
2092 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2093 {
2094 char path [4096];
2095 strcpy (path, w->path);
2096
2097 do
2098 {
2099 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2100 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2101
2102 char *pend = strrchr (path, '/');
2103
2104 if (!pend)
2105 break; /* whoops, no '/', complain to your admin */
2106
2107 *pend = 0;
2108 w->wd = inotify_add_watch (fs_fd, path, mask);
2109 }
2110 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2111 }
2112 }
2113 else
2114 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2115
2116 if (w->wd >= 0)
2117 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2118}
2119
2120static void noinline
2121infy_del (EV_P_ ev_stat *w)
2122{
2123 int slot;
2124 int wd = w->wd;
2125
2126 if (wd < 0)
2127 return;
2128
2129 w->wd = -2;
2130 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2131 wlist_del (&fs_hash [slot].head, (WL)w);
2132
2133 /* remove this watcher, if others are watching it, they will rearm */
2134 inotify_rm_watch (fs_fd, wd);
2135}
2136
2137static void noinline
2138infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2139{
2140 if (slot < 0)
2141 /* overflow, need to check for all hahs slots */
2142 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2143 infy_wd (EV_A_ slot, wd, ev);
2144 else
2145 {
2146 WL w_;
2147
2148 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2149 {
2150 ev_stat *w = (ev_stat *)w_;
2151 w_ = w_->next; /* lets us remove this watcher and all before it */
2152
2153 if (w->wd == wd || wd == -1)
2154 {
2155 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2156 {
2157 w->wd = -1;
2158 infy_add (EV_A_ w); /* re-add, no matter what */
2159 }
2160
2161 stat_timer_cb (EV_A_ &w->timer, 0);
2162 }
2163 }
2164 }
2165}
2166
2167static void
2168infy_cb (EV_P_ ev_io *w, int revents)
2169{
2170 char buf [EV_INOTIFY_BUFSIZE];
2171 struct inotify_event *ev = (struct inotify_event *)buf;
2172 int ofs;
2173 int len = read (fs_fd, buf, sizeof (buf));
2174
2175 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2176 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2177}
2178
2179void inline_size
2180infy_init (EV_P)
2181{
2182 if (fs_fd != -2)
2183 return;
2184
2185 fs_fd = inotify_init ();
2186
2187 if (fs_fd >= 0)
2188 {
2189 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2190 ev_set_priority (&fs_w, EV_MAXPRI);
2191 ev_io_start (EV_A_ &fs_w);
2192 }
2193}
2194
2195void inline_size
2196infy_fork (EV_P)
2197{
2198 int slot;
2199
2200 if (fs_fd < 0)
2201 return;
2202
2203 close (fs_fd);
2204 fs_fd = inotify_init ();
2205
2206 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2207 {
2208 WL w_ = fs_hash [slot].head;
2209 fs_hash [slot].head = 0;
2210
2211 while (w_)
2212 {
2213 ev_stat *w = (ev_stat *)w_;
2214 w_ = w_->next; /* lets us add this watcher */
2215
2216 w->wd = -1;
2217
2218 if (fs_fd >= 0)
2219 infy_add (EV_A_ w); /* re-add, no matter what */
2220 else
2221 ev_timer_start (EV_A_ &w->timer);
2222 }
2223
2224 }
2225}
2226
2227#endif
2228
2229void
2230ev_stat_stat (EV_P_ ev_stat *w)
2231{
2232 if (lstat (w->path, &w->attr) < 0)
2233 w->attr.st_nlink = 0;
2234 else if (!w->attr.st_nlink)
2235 w->attr.st_nlink = 1;
2236}
2237
2238static void noinline
2239stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2240{
2241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2242
2243 /* we copy this here each the time so that */
2244 /* prev has the old value when the callback gets invoked */
2245 w->prev = w->attr;
2246 ev_stat_stat (EV_A_ w);
2247
2248 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2249 if (
2250 w->prev.st_dev != w->attr.st_dev
2251 || w->prev.st_ino != w->attr.st_ino
2252 || w->prev.st_mode != w->attr.st_mode
2253 || w->prev.st_nlink != w->attr.st_nlink
2254 || w->prev.st_uid != w->attr.st_uid
2255 || w->prev.st_gid != w->attr.st_gid
2256 || w->prev.st_rdev != w->attr.st_rdev
2257 || w->prev.st_size != w->attr.st_size
2258 || w->prev.st_atime != w->attr.st_atime
2259 || w->prev.st_mtime != w->attr.st_mtime
2260 || w->prev.st_ctime != w->attr.st_ctime
2261 ) {
2262 #if EV_USE_INOTIFY
2263 infy_del (EV_A_ w);
2264 infy_add (EV_A_ w);
2265 ev_stat_stat (EV_A_ w); /* avoid race... */
2266 #endif
2267
2268 ev_feed_event (EV_A_ w, EV_STAT);
2269 }
2270}
2271
2272void
2273ev_stat_start (EV_P_ ev_stat *w)
2274{
2275 if (expect_false (ev_is_active (w)))
2276 return;
2277
2278 /* since we use memcmp, we need to clear any padding data etc. */
2279 memset (&w->prev, 0, sizeof (ev_statdata));
2280 memset (&w->attr, 0, sizeof (ev_statdata));
2281
2282 ev_stat_stat (EV_A_ w);
2283
2284 if (w->interval < MIN_STAT_INTERVAL)
2285 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2286
2287 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2288 ev_set_priority (&w->timer, ev_priority (w));
2289
2290#if EV_USE_INOTIFY
2291 infy_init (EV_A);
2292
2293 if (fs_fd >= 0)
2294 infy_add (EV_A_ w);
2295 else
2296#endif
2297 ev_timer_start (EV_A_ &w->timer);
2298
2299 ev_start (EV_A_ (W)w, 1);
2300}
2301
2302void
2303ev_stat_stop (EV_P_ ev_stat *w)
2304{
2305 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w)))
2307 return;
2308
2309#if EV_USE_INOTIFY
2310 infy_del (EV_A_ w);
2311#endif
2312 ev_timer_stop (EV_A_ &w->timer);
2313
2314 ev_stop (EV_A_ (W)w);
2315}
2316#endif
2317
2318#if EV_IDLE_ENABLE
1563void 2319void
1564ev_idle_start (EV_P_ ev_idle *w) 2320ev_idle_start (EV_P_ ev_idle *w)
1565{ 2321{
1566 if (expect_false (ev_is_active (w))) 2322 if (expect_false (ev_is_active (w)))
1567 return; 2323 return;
1568 2324
2325 pri_adjust (EV_A_ (W)w);
2326
2327 {
2328 int active = ++idlecnt [ABSPRI (w)];
2329
2330 ++idleall;
1569 ev_start (EV_A_ (W)w, ++idlecnt); 2331 ev_start (EV_A_ (W)w, active);
2332
1570 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2333 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1571 idles [idlecnt - 1] = w; 2334 idles [ABSPRI (w)][active - 1] = w;
2335 }
1572} 2336}
1573 2337
1574void 2338void
1575ev_idle_stop (EV_P_ ev_idle *w) 2339ev_idle_stop (EV_P_ ev_idle *w)
1576{ 2340{
1577 ev_clear_pending (EV_A_ (W)w); 2341 clear_pending (EV_A_ (W)w);
1578 if (expect_false (!ev_is_active (w))) 2342 if (expect_false (!ev_is_active (w)))
1579 return; 2343 return;
1580 2344
1581 { 2345 {
1582 int active = ((W)w)->active; 2346 int active = ((W)w)->active;
1583 idles [active - 1] = idles [--idlecnt]; 2347
2348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1584 ((W)idles [active - 1])->active = active; 2349 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2350
2351 ev_stop (EV_A_ (W)w);
2352 --idleall;
1585 } 2353 }
1586
1587 ev_stop (EV_A_ (W)w);
1588} 2354}
2355#endif
1589 2356
1590void 2357void
1591ev_prepare_start (EV_P_ ev_prepare *w) 2358ev_prepare_start (EV_P_ ev_prepare *w)
1592{ 2359{
1593 if (expect_false (ev_is_active (w))) 2360 if (expect_false (ev_is_active (w)))
… …
1599} 2366}
1600 2367
1601void 2368void
1602ev_prepare_stop (EV_P_ ev_prepare *w) 2369ev_prepare_stop (EV_P_ ev_prepare *w)
1603{ 2370{
1604 ev_clear_pending (EV_A_ (W)w); 2371 clear_pending (EV_A_ (W)w);
1605 if (expect_false (!ev_is_active (w))) 2372 if (expect_false (!ev_is_active (w)))
1606 return; 2373 return;
1607 2374
1608 { 2375 {
1609 int active = ((W)w)->active; 2376 int active = ((W)w)->active;
… …
1626} 2393}
1627 2394
1628void 2395void
1629ev_check_stop (EV_P_ ev_check *w) 2396ev_check_stop (EV_P_ ev_check *w)
1630{ 2397{
1631 ev_clear_pending (EV_A_ (W)w); 2398 clear_pending (EV_A_ (W)w);
1632 if (expect_false (!ev_is_active (w))) 2399 if (expect_false (!ev_is_active (w)))
1633 return; 2400 return;
1634 2401
1635 { 2402 {
1636 int active = ((W)w)->active; 2403 int active = ((W)w)->active;
… …
1639 } 2406 }
1640 2407
1641 ev_stop (EV_A_ (W)w); 2408 ev_stop (EV_A_ (W)w);
1642} 2409}
1643 2410
1644#ifndef SA_RESTART
1645# define SA_RESTART 0
1646#endif
1647
1648void
1649ev_signal_start (EV_P_ ev_signal *w)
1650{
1651#if EV_MULTIPLICITY
1652 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1653#endif
1654 if (expect_false (ev_is_active (w)))
1655 return;
1656
1657 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1658
1659 ev_start (EV_A_ (W)w, 1);
1660 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1661 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1662
1663 if (!((WL)w)->next)
1664 {
1665#if _WIN32
1666 signal (w->signum, sighandler);
1667#else
1668 struct sigaction sa;
1669 sa.sa_handler = sighandler;
1670 sigfillset (&sa.sa_mask);
1671 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1672 sigaction (w->signum, &sa, 0);
1673#endif
1674 }
1675}
1676
1677void
1678ev_signal_stop (EV_P_ ev_signal *w)
1679{
1680 ev_clear_pending (EV_A_ (W)w);
1681 if (expect_false (!ev_is_active (w)))
1682 return;
1683
1684 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1685 ev_stop (EV_A_ (W)w);
1686
1687 if (!signals [w->signum - 1].head)
1688 signal (w->signum, SIG_DFL);
1689}
1690
1691void
1692ev_child_start (EV_P_ ev_child *w)
1693{
1694#if EV_MULTIPLICITY
1695 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1696#endif
1697 if (expect_false (ev_is_active (w)))
1698 return;
1699
1700 ev_start (EV_A_ (W)w, 1);
1701 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1702}
1703
1704void
1705ev_child_stop (EV_P_ ev_child *w)
1706{
1707 ev_clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w)))
1709 return;
1710
1711 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1712 ev_stop (EV_A_ (W)w);
1713}
1714
1715#if EV_EMBED_ENABLE 2411#if EV_EMBED_ENABLE
1716void noinline 2412void noinline
1717ev_embed_sweep (EV_P_ ev_embed *w) 2413ev_embed_sweep (EV_P_ ev_embed *w)
1718{ 2414{
1719 ev_loop (w->loop, EVLOOP_NONBLOCK); 2415 ev_loop (w->other, EVLOOP_NONBLOCK);
1720} 2416}
1721 2417
1722static void 2418static void
1723embed_cb (EV_P_ ev_io *io, int revents) 2419embed_io_cb (EV_P_ ev_io *io, int revents)
1724{ 2420{
1725 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1726 2422
1727 if (ev_cb (w)) 2423 if (ev_cb (w))
1728 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2424 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1729 else 2425 else
1730 ev_embed_sweep (loop, w); 2426 ev_loop (w->other, EVLOOP_NONBLOCK);
1731} 2427}
2428
2429static void
2430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2431{
2432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2433
2434 {
2435 struct ev_loop *loop = w->other;
2436
2437 while (fdchangecnt)
2438 {
2439 fd_reify (EV_A);
2440 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2441 }
2442 }
2443}
2444
2445#if 0
2446static void
2447embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2448{
2449 ev_idle_stop (EV_A_ idle);
2450}
2451#endif
1732 2452
1733void 2453void
1734ev_embed_start (EV_P_ ev_embed *w) 2454ev_embed_start (EV_P_ ev_embed *w)
1735{ 2455{
1736 if (expect_false (ev_is_active (w))) 2456 if (expect_false (ev_is_active (w)))
1737 return; 2457 return;
1738 2458
1739 { 2459 {
1740 struct ev_loop *loop = w->loop; 2460 struct ev_loop *loop = w->other;
1741 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2461 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1742 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2462 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1743 } 2463 }
1744 2464
1745 ev_set_priority (&w->io, ev_priority (w)); 2465 ev_set_priority (&w->io, ev_priority (w));
1746 ev_io_start (EV_A_ &w->io); 2466 ev_io_start (EV_A_ &w->io);
1747 2467
2468 ev_prepare_init (&w->prepare, embed_prepare_cb);
2469 ev_set_priority (&w->prepare, EV_MINPRI);
2470 ev_prepare_start (EV_A_ &w->prepare);
2471
2472 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2473
1748 ev_start (EV_A_ (W)w, 1); 2474 ev_start (EV_A_ (W)w, 1);
1749} 2475}
1750 2476
1751void 2477void
1752ev_embed_stop (EV_P_ ev_embed *w) 2478ev_embed_stop (EV_P_ ev_embed *w)
1753{ 2479{
1754 ev_clear_pending (EV_A_ (W)w); 2480 clear_pending (EV_A_ (W)w);
1755 if (expect_false (!ev_is_active (w))) 2481 if (expect_false (!ev_is_active (w)))
1756 return; 2482 return;
1757 2483
1758 ev_io_stop (EV_A_ &w->io); 2484 ev_io_stop (EV_A_ &w->io);
2485 ev_prepare_stop (EV_A_ &w->prepare);
1759 2486
1760 ev_stop (EV_A_ (W)w); 2487 ev_stop (EV_A_ (W)w);
1761} 2488}
1762#endif 2489#endif
1763 2490
1764#if EV_STAT_ENABLE 2491#if EV_FORK_ENABLE
1765
1766# ifdef _WIN32
1767# define lstat(a,b) stat(a,b)
1768# endif
1769
1770#define DEF_STAT_INTERVAL 5.0074891
1771#define MIN_STAT_INTERVAL 0.1074891
1772
1773void 2492void
1774ev_stat_stat (EV_P_ ev_stat *w)
1775{
1776 if (lstat (w->path, &w->attr) < 0)
1777 w->attr.st_nlink = 0;
1778 else if (!w->attr.st_nlink)
1779 w->attr.st_nlink = 1;
1780}
1781
1782static void
1783stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1784{
1785 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1786
1787 /* we copy this here each the time so that */
1788 /* prev has the old value when the callback gets invoked */
1789 w->prev = w->attr;
1790 ev_stat_stat (EV_A_ w);
1791
1792 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1793 ev_feed_event (EV_A_ w, EV_STAT);
1794}
1795
1796void
1797ev_stat_start (EV_P_ ev_stat *w) 2493ev_fork_start (EV_P_ ev_fork *w)
1798{ 2494{
1799 if (expect_false (ev_is_active (w))) 2495 if (expect_false (ev_is_active (w)))
1800 return; 2496 return;
1801 2497
1802 /* since we use memcmp, we need to clear any padding data etc. */
1803 memset (&w->prev, 0, sizeof (ev_statdata));
1804 memset (&w->attr, 0, sizeof (ev_statdata));
1805
1806 ev_stat_stat (EV_A_ w);
1807
1808 if (w->interval < MIN_STAT_INTERVAL)
1809 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1810
1811 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1812 ev_set_priority (&w->timer, ev_priority (w));
1813 ev_timer_start (EV_A_ &w->timer);
1814
1815 ev_start (EV_A_ (W)w, 1); 2498 ev_start (EV_A_ (W)w, ++forkcnt);
2499 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2500 forks [forkcnt - 1] = w;
1816} 2501}
1817 2502
1818void 2503void
1819ev_stat_stop (EV_P_ ev_stat *w) 2504ev_fork_stop (EV_P_ ev_fork *w)
1820{ 2505{
1821 ev_clear_pending (EV_A_ (W)w); 2506 clear_pending (EV_A_ (W)w);
1822 if (expect_false (!ev_is_active (w))) 2507 if (expect_false (!ev_is_active (w)))
1823 return; 2508 return;
1824 2509
1825 ev_timer_stop (EV_A_ &w->timer); 2510 {
2511 int active = ((W)w)->active;
2512 forks [active - 1] = forks [--forkcnt];
2513 ((W)forks [active - 1])->active = active;
2514 }
1826 2515
1827 ev_stop (EV_A_ (W)w); 2516 ev_stop (EV_A_ (W)w);
2517}
2518#endif
2519
2520#if EV_ASYNC_ENABLE
2521void
2522ev_async_start (EV_P_ ev_async *w)
2523{
2524 if (expect_false (ev_is_active (w)))
2525 return;
2526
2527 evpipe_init (EV_A);
2528
2529 ev_start (EV_A_ (W)w, ++asynccnt);
2530 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2531 asyncs [asynccnt - 1] = w;
2532}
2533
2534void
2535ev_async_stop (EV_P_ ev_async *w)
2536{
2537 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w)))
2539 return;
2540
2541 {
2542 int active = ((W)w)->active;
2543 asyncs [active - 1] = asyncs [--asynccnt];
2544 ((W)asyncs [active - 1])->active = active;
2545 }
2546
2547 ev_stop (EV_A_ (W)w);
2548}
2549
2550void
2551ev_async_send (EV_P_ ev_async *w)
2552{
2553 w->sent = 1;
2554 evpipe_write (EV_A_ &gotasync);
1828} 2555}
1829#endif 2556#endif
1830 2557
1831/*****************************************************************************/ 2558/*****************************************************************************/
1832 2559
… …
1890 ev_timer_set (&once->to, timeout, 0.); 2617 ev_timer_set (&once->to, timeout, 0.);
1891 ev_timer_start (EV_A_ &once->to); 2618 ev_timer_start (EV_A_ &once->to);
1892 } 2619 }
1893} 2620}
1894 2621
2622#if EV_MULTIPLICITY
2623 #include "ev_wrap.h"
2624#endif
2625
1895#ifdef __cplusplus 2626#ifdef __cplusplus
1896} 2627}
1897#endif 2628#endif
1898 2629

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