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Comparing libev/ev.c (file contents):
Revision 1.19 by root, Wed Oct 31 17:55:55 2007 UTC vs.
Revision 1.215 by ayin, Thu Feb 21 10:34:15 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
3 * All rights reserved. 5 * All rights reserved.
4 * 6 *
5 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
6 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
7 * 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.
8 * 27 *
9 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
10 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
11 * 30 * in which case the provisions of the GPL are applicable instead of
12 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
13 * 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
14 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
15 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
16 * 35 * and other provisions required by the GPL. If you do not delete the
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
48# include "config.h"
49# endif
50
51# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1
54# endif
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1
57# endif
58# else
59# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0
61# endif
62# ifndef EV_USE_REALTIME
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
72# endif
73# endif
74
75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
81# endif
82
83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
89# endif
90
91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93# define EV_USE_EPOLL 1
94# else
95# define EV_USE_EPOLL 0
96# endif
97# endif
98
99# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif
105# endif
106
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE
109# define EV_USE_PORT 1
110# else
111# define EV_USE_PORT 0
112# endif
113# endif
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
123#endif
29 124
30#include <math.h> 125#include <math.h>
31#include <stdlib.h> 126#include <stdlib.h>
32#include <unistd.h>
33#include <fcntl.h> 127#include <fcntl.h>
34#include <signal.h>
35#include <stddef.h> 128#include <stddef.h>
36 129
37#include <stdio.h> 130#include <stdio.h>
38 131
39#include <assert.h> 132#include <assert.h>
40#include <errno.h> 133#include <errno.h>
41#include <sys/time.h> 134#include <sys/types.h>
42#include <time.h> 135#include <time.h>
43 136
44#ifndef HAVE_MONOTONIC 137#include <signal.h>
45# ifdef CLOCK_MONOTONIC 138
46# define HAVE_MONOTONIC 1 139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
145#ifndef _WIN32
146# include <sys/time.h>
147# include <sys/wait.h>
148# include <unistd.h>
149#else
150# define WIN32_LEAN_AND_MEAN
151# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1
47# endif 154# endif
48#endif 155#endif
49 156
157/**/
158
159#ifndef EV_USE_MONOTONIC
160# define EV_USE_MONOTONIC 0
161#endif
162
163#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0
165#endif
166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
50#ifndef HAVE_SELECT 171#ifndef EV_USE_SELECT
51# define HAVE_SELECT 1 172# define EV_USE_SELECT 1
173#endif
174
175#ifndef EV_USE_POLL
176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
52#endif 180# endif
181#endif
53 182
54#ifndef HAVE_EPOLL 183#ifndef EV_USE_EPOLL
55# define HAVE_EPOLL 0 184# define EV_USE_EPOLL 0
185#endif
186
187#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0
189#endif
190
191#ifndef EV_USE_PORT
192# define EV_USE_PORT 0
193#endif
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
56#endif 204# endif
205#endif
57 206
58#ifndef HAVE_REALTIME 207#ifndef EV_INOTIFY_HASHSIZE
59# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ 208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
60#endif 212# endif
213#endif
214
215/**/
216
217#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0
220#endif
221
222#ifndef CLOCK_REALTIME
223# undef EV_USE_REALTIME
224# define EV_USE_REALTIME 0
225#endif
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
242#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h>
244#endif
245
246/**/
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 */
61 257
62#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) */
63#define MAX_BLOCKTIME 60. 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
64 261
65#include "ev.h" 262#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline))
265#else
266# define expect(expr,value) (expr)
267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
271#endif
66 272
273#define expect_false(expr) expect ((expr) != 0, 0)
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
282
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
67typedef struct ev_watcher *W; 289typedef ev_watcher *W;
68typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
69typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
70 292
71static ev_tstamp now, diff; /* monotonic clock */ 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 */
296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
298
299#ifdef _WIN32
300# include "ev_win32.c"
301#endif
302
303/*****************************************************************************/
304
305static void (*syserr_cb)(const char *msg);
306
307void
308ev_set_syserr_cb (void (*cb)(const char *msg))
309{
310 syserr_cb = cb;
311}
312
313static void noinline
314syserr (const char *msg)
315{
316 if (!msg)
317 msg = "(libev) system error";
318
319 if (syserr_cb)
320 syserr_cb (msg);
321 else
322 {
323 perror (msg);
324 abort ();
325 }
326}
327
328static void *(*alloc)(void *ptr, long size);
329
330void
331ev_set_allocator (void *(*cb)(void *ptr, long size))
332{
333 alloc = cb;
334}
335
336inline_speed void *
337ev_realloc (void *ptr, long size)
338{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
340
341 if (!ptr && size)
342 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort ();
345 }
346
347 return ptr;
348}
349
350#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0)
352
353/*****************************************************************************/
354
355typedef struct
356{
357 WL head;
358 unsigned char events;
359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
363} ANFD;
364
365typedef struct
366{
367 W w;
368 int events;
369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
378#if EV_MULTIPLICITY
379
380 struct ev_loop
381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
384 #define VAR(name,decl) decl;
385 #include "ev_vars.h"
386 #undef VAR
387 };
388 #include "ev_wrap.h"
389
390 static struct ev_loop default_loop_struct;
391 struct ev_loop *ev_default_loop_ptr;
392
393#else
394
72ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
73int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
74 399
75static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
76 401
77static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
78static void (*method_modify)(int fd, int oev, int nev);
79static void (*method_poll)(ev_tstamp timeout);
80 403
81/*****************************************************************************/ 404/*****************************************************************************/
82 405
83ev_tstamp 406ev_tstamp
84ev_time (void) 407ev_time (void)
85{ 408{
86#if HAVE_REALTIME 409#if EV_USE_REALTIME
87 struct timespec ts; 410 struct timespec ts;
88 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
89 return ts.tv_sec + ts.tv_nsec * 1e-9; 412 return ts.tv_sec + ts.tv_nsec * 1e-9;
90#else 413#else
91 struct timeval tv; 414 struct timeval tv;
92 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
93 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
94#endif 417#endif
95} 418}
96 419
97static ev_tstamp 420ev_tstamp inline_size
98get_clock (void) 421get_clock (void)
99{ 422{
100#if HAVE_MONOTONIC 423#if EV_USE_MONOTONIC
101 if (have_monotonic) 424 if (expect_true (have_monotonic))
102 { 425 {
103 struct timespec ts; 426 struct timespec ts;
104 clock_gettime (CLOCK_MONOTONIC, &ts); 427 clock_gettime (CLOCK_MONOTONIC, &ts);
105 return ts.tv_sec + ts.tv_nsec * 1e-9; 428 return ts.tv_sec + ts.tv_nsec * 1e-9;
106 } 429 }
107#endif 430#endif
108 431
109 return ev_time (); 432 return ev_time ();
110} 433}
111 434
112#define array_needsize(base,cur,cnt,init) \ 435#if EV_MULTIPLICITY
113 if ((cnt) > cur) \ 436ev_tstamp
114 { \ 437ev_now (EV_P)
115 int newcnt = cur ? cur << 1 : 16; \ 438{
116 base = realloc (base, sizeof (*base) * (newcnt)); \ 439 return ev_rt_now;
117 init (base + cur, newcnt - cur); \ 440}
118 cur = newcnt; \ 441#endif
442
443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
119 } 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}
120 467
121/*****************************************************************************/ 468/*****************************************************************************/
122 469
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}
497
498#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \
500 { \
501 int ocur_ = (cur); \
502 (base) = (type *)array_realloc \
503 (sizeof (type), (base), &(cur), (cnt)); \
504 init ((base) + (ocur_), (cur) - ocur_); \
505 }
506
507#if 0
508#define array_slim(type,stem) \
509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
510 { \
511 stem ## max = array_roundsize (stem ## cnt >> 1); \
512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 }
515#endif
516
517#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
519
520/*****************************************************************************/
521
522void noinline
523ev_feed_event (EV_P_ void *w, int revents)
524{
525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
527
528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
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_;
535 pendings [pri][w_->pending - 1].events = revents;
536 }
537}
538
539void inline_speed
540queue_events (EV_P_ W *events, int eventcnt, int type)
541{
542 int i;
543
544 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type);
546}
547
548/*****************************************************************************/
549
550void inline_size
551anfds_init (ANFD *base, int count)
552{
553 while (count--)
554 {
555 base->head = 0;
556 base->events = EV_NONE;
557 base->reify = 0;
558
559 ++base;
560 }
561}
562
563void inline_speed
564fd_event (EV_P_ int fd, int revents)
565{
566 ANFD *anfd = anfds + fd;
567 ev_io *w;
568
569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
570 {
571 int ev = w->events & revents;
572
573 if (ev)
574 ev_feed_event (EV_A_ (W)w, ev);
575 }
576}
577
578void
579ev_feed_fd_event (EV_P_ int fd, int revents)
580{
581 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents);
583}
584
585void inline_size
586fd_reify (EV_P)
587{
588 int i;
589
590 for (i = 0; i < fdchangecnt; ++i)
591 {
592 int fd = fdchanges [i];
593 ANFD *anfd = anfds + fd;
594 ev_io *w;
595
596 unsigned char events = 0;
597
598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
599 events |= (unsigned char)w->events;
600
601#if EV_SELECT_IS_WINSOCKET
602 if (events)
603 {
604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
608 anfd->handle = _get_osfhandle (fd);
609 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
611 }
612#endif
613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
618 anfd->reify = 0;
619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
624 }
625
626 fdchangecnt = 0;
627}
628
629void inline_size
630fd_change (EV_P_ int fd, int flags)
631{
632 unsigned char reify = anfds [fd].reify;
633 anfds [fd].reify |= flags;
634
635 if (expect_true (!reify))
636 {
637 ++fdchangecnt;
638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639 fdchanges [fdchangecnt - 1] = fd;
640 }
641}
642
643void inline_speed
644fd_kill (EV_P_ int fd)
645{
646 ev_io *w;
647
648 while ((w = (ev_io *)anfds [fd].head))
649 {
650 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 }
653}
654
655int inline_size
656fd_valid (int fd)
657{
658#ifdef _WIN32
659 return _get_osfhandle (fd) != -1;
660#else
661 return fcntl (fd, F_GETFD) != -1;
662#endif
663}
664
665/* called on EBADF to verify fds */
666static void noinline
667fd_ebadf (EV_P)
668{
669 int fd;
670
671 for (fd = 0; fd < anfdmax; ++fd)
672 if (anfds [fd].events)
673 if (!fd_valid (fd) == -1 && errno == EBADF)
674 fd_kill (EV_A_ fd);
675}
676
677/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline
679fd_enomem (EV_P)
680{
681 int fd;
682
683 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events)
685 {
686 fd_kill (EV_A_ fd);
687 return;
688 }
689}
690
691/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline
693fd_rearm_all (EV_P)
694{
695 int fd;
696
697 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events)
699 {
700 anfds [fd].events = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
702 }
703}
704
705/*****************************************************************************/
706
707void inline_speed
708upheap (WT *heap, int k)
709{
710 WT w = heap [k];
711
712 while (k)
713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
719 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1;
721 k = p;
722 }
723
724 heap [k] = w;
725 ((W)heap [k])->active = k + 1;
726}
727
728void inline_speed
729downheap (WT *heap, int N, int k)
730{
731 WT w = heap [k];
732
733 for (;;)
734 {
735 int c = (k << 1) + 1;
736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
752 heap [k] = w;
753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
761}
762
763/*****************************************************************************/
764
123typedef struct 765typedef struct
124{ 766{
125 struct ev_io *head; 767 WL head;
126 unsigned char wev, rev; /* want, received event set */ 768 EV_ATOMIC_T gotsig;
127} ANFD;
128
129static ANFD *anfds;
130static int anfdmax;
131
132static int *fdchanges;
133static int fdchangemax, fdchangecnt;
134
135static void
136anfds_init (ANFD *base, int count)
137{
138 while (count--)
139 {
140 base->head = 0;
141 base->wev = base->rev = EV_NONE;
142 ++base;
143 }
144}
145
146typedef struct
147{
148 W w;
149 int events;
150} ANPENDING;
151
152static ANPENDING *pendings;
153static int pendingmax, pendingcnt;
154
155static void
156event (W w, int events)
157{
158 if (w->active)
159 {
160 w->pending = ++pendingcnt;
161 array_needsize (pendings, pendingmax, pendingcnt, );
162 pendings [pendingcnt - 1].w = w;
163 pendings [pendingcnt - 1].events = events;
164 }
165}
166
167static void
168fd_event (int fd, int events)
169{
170 ANFD *anfd = anfds + fd;
171 struct ev_io *w;
172
173 for (w = anfd->head; w; w = w->next)
174 {
175 int ev = w->events & events;
176
177 if (ev)
178 event ((W)w, ev);
179 }
180}
181
182static void
183queue_events (W *events, int eventcnt, int type)
184{
185 int i;
186
187 for (i = 0; i < eventcnt; ++i)
188 event (events [i], type);
189}
190
191/* called on EBADF to verify fds */
192static void
193fd_recheck ()
194{
195 int fd;
196
197 for (fd = 0; fd < anfdmax; ++fd)
198 if (anfds [fd].wev)
199 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
200 while (anfds [fd].head)
201 evio_stop (anfds [fd].head);
202}
203
204/*****************************************************************************/
205
206static struct ev_timer **timers;
207static int timermax, timercnt;
208
209static struct ev_periodic **periodics;
210static int periodicmax, periodiccnt;
211
212static void
213upheap (WT *timers, int k)
214{
215 WT w = timers [k];
216
217 while (k && timers [k >> 1]->at > w->at)
218 {
219 timers [k] = timers [k >> 1];
220 timers [k]->active = k + 1;
221 k >>= 1;
222 }
223
224 timers [k] = w;
225 timers [k]->active = k + 1;
226
227}
228
229static void
230downheap (WT *timers, int N, int k)
231{
232 WT w = timers [k];
233
234 while (k < (N >> 1))
235 {
236 int j = k << 1;
237
238 if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
239 ++j;
240
241 if (w->at <= timers [j]->at)
242 break;
243
244 timers [k] = timers [j];
245 timers [k]->active = k + 1;
246 k = j;
247 }
248
249 timers [k] = w;
250 timers [k]->active = k + 1;
251}
252
253/*****************************************************************************/
254
255typedef struct
256{
257 struct ev_signal *head;
258 sig_atomic_t gotsig;
259} ANSIG; 769} ANSIG;
260 770
261static ANSIG *signals; 771static ANSIG *signals;
262static int signalmax; 772static int signalmax;
263 773
264static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
265static sig_atomic_t gotsig;
266static struct ev_io sigev;
267 775
268static void 776void inline_size
269signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
270{ 778{
271 while (count--) 779 while (count--)
272 { 780 {
273 base->head = 0; 781 base->head = 0;
274 base->gotsig = 0; 782 base->gotsig = 0;
783
275 ++base; 784 ++base;
276 } 785 }
277} 786}
787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd)
792{
793#ifdef _WIN32
794 int arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif
800}
801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{
822 if (!*flag)
823 {
824 int old_errno = errno; /* save errno because write might clobber it */
825
826 *flag = 1;
827 write (evpipe [1], &old_errno, 1);
828
829 errno = old_errno;
830 }
831}
832
833static void
834pipecb (EV_P_ ev_io *iow, int revents)
835{
836 {
837 int dummy;
838 read (evpipe [0], &dummy, 1);
839 }
840
841 if (gotsig && ev_is_default_loop (EV_A))
842 {
843 int signum;
844 gotsig = 0;
845
846 for (signum = signalmax; signum--; )
847 if (signals [signum].gotsig)
848 ev_feed_signal_event (EV_A_ signum + 1);
849 }
850
851#if EV_ASYNC_ENABLE
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864#endif
865}
866
867/*****************************************************************************/
278 868
279static void 869static void
280sighandler (int signum) 870sighandler (int signum)
281{ 871{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32
877 signal (signum, sighandler);
878#endif
879
282 signals [signum - 1].gotsig = 1; 880 signals [signum - 1].gotsig = 1;
881 evpipe_write (EV_A_ &gotsig);
882}
283 883
284 if (!gotsig) 884void noinline
885ev_feed_signal_event (EV_P_ int signum)
886{
887 WL w;
888
889#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
892
893 --signum;
894
895 if (signum < 0 || signum >= signalmax)
896 return;
897
898 signals [signum].gotsig = 0;
899
900 for (w = signals [signum].head; w; w = w->next)
901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902}
903
904/*****************************************************************************/
905
906static WL childs [EV_PID_HASHSIZE];
907
908#ifndef _WIN32
909
910static ev_signal childev;
911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
916void inline_speed
917child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
918{
919 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921
922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
923 {
924 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1)))
926 {
927 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
928 w->rpid = pid;
929 w->rstatus = status;
930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
931 }
932 }
933}
934
935#ifndef WCONTINUED
936# define WCONTINUED 0
937#endif
938
939static void
940childcb (EV_P_ ev_signal *sw, int revents)
941{
942 int pid, status;
943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
946 if (!WCONTINUED
947 || errno != EINVAL
948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
949 return;
950
951 /* make sure we are called again until all childs have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */
953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
954
955 child_reap (EV_A_ sw, pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
957 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
958}
959
960#endif
961
962/*****************************************************************************/
963
964#if EV_USE_PORT
965# include "ev_port.c"
966#endif
967#if EV_USE_KQUEUE
968# include "ev_kqueue.c"
969#endif
970#if EV_USE_EPOLL
971# include "ev_epoll.c"
972#endif
973#if EV_USE_POLL
974# include "ev_poll.c"
975#endif
976#if EV_USE_SELECT
977# include "ev_select.c"
978#endif
979
980int
981ev_version_major (void)
982{
983 return EV_VERSION_MAJOR;
984}
985
986int
987ev_version_minor (void)
988{
989 return EV_VERSION_MINOR;
990}
991
992/* return true if we are running with elevated privileges and should ignore env variables */
993int inline_size
994enable_secure (void)
995{
996#ifdef _WIN32
997 return 0;
998#else
999 return getuid () != geteuid ()
1000 || getgid () != getegid ();
1001#endif
1002}
1003
1004unsigned int
1005ev_supported_backends (void)
1006{
1007 unsigned int flags = 0;
1008
1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1010 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1011 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1012 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1013 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014
1015 return flags;
1016}
1017
1018unsigned int
1019ev_recommended_backends (void)
1020{
1021 unsigned int flags = ev_supported_backends ();
1022
1023#ifndef __NetBSD__
1024 /* kqueue is borked on everything but netbsd apparently */
1025 /* it usually doesn't work correctly on anything but sockets and pipes */
1026 flags &= ~EVBACKEND_KQUEUE;
1027#endif
1028#ifdef __APPLE__
1029 // flags &= ~EVBACKEND_KQUEUE; for documentation
1030 flags &= ~EVBACKEND_POLL;
1031#endif
1032
1033 return flags;
1034}
1035
1036unsigned int
1037ev_embeddable_backends (void)
1038{
1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040
1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */
1043 flags &= ~EVBACKEND_EPOLL;
1044
1045 return flags;
1046}
1047
1048unsigned int
1049ev_backend (EV_P)
1050{
1051 return backend;
1052}
1053
1054unsigned int
1055ev_loop_count (EV_P)
1056{
1057 return loop_count;
1058}
1059
1060void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{
1063 io_blocktime = interval;
1064}
1065
1066void
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{
1069 timeout_blocktime = interval;
1070}
1071
1072static void noinline
1073loop_init (EV_P_ unsigned int flags)
1074{
1075 if (!backend)
1076 {
1077#if EV_USE_MONOTONIC
285 { 1078 {
1079 struct timespec ts;
1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1081 have_monotonic = 1;
1082 }
1083#endif
1084
1085 ev_rt_now = ev_time ();
1086 mn_now = get_clock ();
1087 now_floor = mn_now;
1088 rtmn_diff = ev_rt_now - mn_now;
1089
1090 io_blocktime = 0.;
1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif
1098
1099 /* pid check not overridable via env */
1100#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK)
1102 curpid = getpid ();
1103#endif
1104
1105 if (!(flags & EVFLAG_NOENV)
1106 && !enable_secure ()
1107 && getenv ("LIBEV_FLAGS"))
1108 flags = atoi (getenv ("LIBEV_FLAGS"));
1109
1110 if (!(flags & 0x0000ffffUL))
1111 flags |= ev_recommended_backends ();
1112
1113#if EV_USE_PORT
1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1115#endif
1116#if EV_USE_KQUEUE
1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1118#endif
1119#if EV_USE_EPOLL
1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1121#endif
1122#if EV_USE_POLL
1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1124#endif
1125#if EV_USE_SELECT
1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1127#endif
1128
1129 ev_init (&pipeev, pipecb);
1130 ev_set_priority (&pipeev, EV_MAXPRI);
1131 }
1132}
1133
1134static void noinline
1135loop_destroy (EV_P)
1136{
1137 int i;
1138
1139 if (ev_is_active (&pipeev))
1140 {
1141 ev_ref (EV_A); /* signal watcher */
1142 ev_io_stop (EV_A_ &pipeev);
1143
1144 close (evpipe [0]); evpipe [0] = 0;
1145 close (evpipe [1]); evpipe [1] = 0;
1146 }
1147
1148#if EV_USE_INOTIFY
1149 if (fs_fd >= 0)
1150 close (fs_fd);
1151#endif
1152
1153 if (backend_fd >= 0)
1154 close (backend_fd);
1155
1156#if EV_USE_PORT
1157 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1158#endif
1159#if EV_USE_KQUEUE
1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1161#endif
1162#if EV_USE_EPOLL
1163 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1164#endif
1165#if EV_USE_POLL
1166 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1167#endif
1168#if EV_USE_SELECT
1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1170#endif
1171
1172 for (i = NUMPRI; i--; )
1173 {
1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
1179
1180 ev_free (anfds); anfdmax = 0;
1181
1182 /* have to use the microsoft-never-gets-it-right macro */
1183 array_free (fdchange, EMPTY);
1184 array_free (timer, EMPTY);
1185#if EV_PERIODIC_ENABLE
1186 array_free (periodic, EMPTY);
1187#endif
1188#if EV_FORK_ENABLE
1189 array_free (fork, EMPTY);
1190#endif
1191 array_free (prepare, EMPTY);
1192 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY);
1195#endif
1196
1197 backend = 0;
1198}
1199
1200void inline_size infy_fork (EV_P);
1201
1202void inline_size
1203loop_fork (EV_P)
1204{
1205#if EV_USE_PORT
1206 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1207#endif
1208#if EV_USE_KQUEUE
1209 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1210#endif
1211#if EV_USE_EPOLL
1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1213#endif
1214#if EV_USE_INOTIFY
1215 infy_fork (EV_A);
1216#endif
1217
1218 if (ev_is_active (&pipeev))
1219 {
1220 /* this "locks" the handlers against writing to the pipe */
1221 /* while we modify the fd vars */
286 gotsig = 1; 1222 gotsig = 1;
287 write (sigpipe [1], &gotsig, 1); 1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
1226
1227 ev_ref (EV_A);
1228 ev_io_stop (EV_A_ &pipeev);
1229 close (evpipe [0]);
1230 close (evpipe [1]);
1231
1232 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ);
1235 }
1236
1237 postfork = 0;
1238}
1239
1240#if EV_MULTIPLICITY
1241struct ev_loop *
1242ev_loop_new (unsigned int flags)
1243{
1244 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1245
1246 memset (loop, 0, sizeof (struct ev_loop));
1247
1248 loop_init (EV_A_ flags);
1249
1250 if (ev_backend (EV_A))
1251 return loop;
1252
1253 return 0;
1254}
1255
1256void
1257ev_loop_destroy (EV_P)
1258{
1259 loop_destroy (EV_A);
1260 ev_free (loop);
1261}
1262
1263void
1264ev_loop_fork (EV_P)
1265{
1266 postfork = 1; /* must be in line with ev_default_fork */
1267}
1268
1269#endif
1270
1271#if EV_MULTIPLICITY
1272struct ev_loop *
1273ev_default_loop_init (unsigned int flags)
1274#else
1275int
1276ev_default_loop (unsigned int flags)
1277#endif
1278{
1279 if (!ev_default_loop_ptr)
288 } 1280 {
289} 1281#if EV_MULTIPLICITY
1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1283#else
1284 ev_default_loop_ptr = 1;
1285#endif
290 1286
291static void 1287 loop_init (EV_A_ flags);
292sigcb (struct ev_io *iow, int revents) 1288
1289 if (ev_backend (EV_A))
1290 {
1291#ifndef _WIN32
1292 ev_signal_init (&childev, childcb, SIGCHLD);
1293 ev_set_priority (&childev, EV_MAXPRI);
1294 ev_signal_start (EV_A_ &childev);
1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
1296#endif
1297 }
1298 else
1299 ev_default_loop_ptr = 0;
1300 }
1301
1302 return ev_default_loop_ptr;
1303}
1304
1305void
1306ev_default_destroy (void)
293{ 1307{
294 struct ev_signal *w; 1308#if EV_MULTIPLICITY
1309 struct ev_loop *loop = ev_default_loop_ptr;
1310#endif
1311
1312#ifndef _WIN32
1313 ev_ref (EV_A); /* child watcher */
1314 ev_signal_stop (EV_A_ &childev);
1315#endif
1316
1317 loop_destroy (EV_A);
1318}
1319
1320void
1321ev_default_fork (void)
1322{
1323#if EV_MULTIPLICITY
1324 struct ev_loop *loop = ev_default_loop_ptr;
1325#endif
1326
1327 if (backend)
1328 postfork = 1; /* must be in line with ev_loop_fork */
1329}
1330
1331/*****************************************************************************/
1332
1333void
1334ev_invoke (EV_P_ void *w, int revents)
1335{
1336 EV_CB_INVOKE ((W)w, revents);
1337}
1338
1339void inline_speed
1340call_pending (EV_P)
1341{
295 int sig; 1342 int pri;
296 1343
297 gotsig = 0; 1344 for (pri = NUMPRI; pri--; )
298 read (sigpipe [0], &revents, 1); 1345 while (pendingcnt [pri])
299
300 for (sig = signalmax; sig--; )
301 if (signals [sig].gotsig)
302 { 1346 {
303 signals [sig].gotsig = 0; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
304 1348
305 for (w = signals [sig].head; w; w = w->next) 1349 if (expect_true (p->w))
306 event ((W)w, EV_SIGNAL); 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
1353 p->w->pending = 0;
1354 EV_CB_INVOKE (p->w, p->events);
1355 }
307 } 1356 }
308} 1357}
309 1358
310static void 1359void inline_size
311siginit (void)
312{
313 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
314 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
315
316 /* rather than sort out wether we really need nb, set it */
317 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
318 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
319
320 evio_set (&sigev, sigpipe [0], EV_READ);
321 evio_start (&sigev);
322}
323
324/*****************************************************************************/
325
326static struct ev_idle **idles;
327static int idlemax, idlecnt;
328
329static struct ev_check **checks;
330static int checkmax, checkcnt;
331
332/*****************************************************************************/
333
334#if HAVE_EPOLL
335# include "ev_epoll.c"
336#endif
337#if HAVE_SELECT
338# include "ev_select.c"
339#endif
340
341int ev_init (int flags)
342{
343#if HAVE_MONOTONIC
344 {
345 struct timespec ts;
346 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
347 have_monotonic = 1;
348 }
349#endif
350
351 ev_now = ev_time ();
352 now = get_clock ();
353 diff = ev_now - now;
354
355 if (pipe (sigpipe))
356 return 0;
357
358 ev_method = EVMETHOD_NONE;
359#if HAVE_EPOLL
360 if (ev_method == EVMETHOD_NONE) epoll_init (flags);
361#endif
362#if HAVE_SELECT
363 if (ev_method == EVMETHOD_NONE) select_init (flags);
364#endif
365
366 if (ev_method)
367 {
368 evw_init (&sigev, sigcb);
369 siginit ();
370 }
371
372 return ev_method;
373}
374
375/*****************************************************************************/
376
377void ev_prefork (void)
378{
379 /* nop */
380}
381
382void ev_postfork_parent (void)
383{
384 /* nop */
385}
386
387void ev_postfork_child (void)
388{
389#if HAVE_EPOLL
390 if (ev_method == EVMETHOD_EPOLL)
391 epoll_postfork_child ();
392#endif
393
394 evio_stop (&sigev);
395 close (sigpipe [0]);
396 close (sigpipe [1]);
397 pipe (sigpipe);
398 siginit ();
399}
400
401/*****************************************************************************/
402
403static void
404fd_reify (void)
405{
406 int i;
407
408 for (i = 0; i < fdchangecnt; ++i)
409 {
410 int fd = fdchanges [i];
411 ANFD *anfd = anfds + fd;
412 struct ev_io *w;
413
414 int wev = 0;
415
416 for (w = anfd->head; w; w = w->next)
417 wev |= w->events;
418
419 if (anfd->wev != wev)
420 {
421 method_modify (fd, anfd->wev, wev);
422 anfd->wev = wev;
423 }
424 }
425
426 fdchangecnt = 0;
427}
428
429static void
430call_pending ()
431{
432 while (pendingcnt)
433 {
434 ANPENDING *p = pendings + --pendingcnt;
435
436 if (p->w)
437 {
438 p->w->pending = 0;
439 p->w->cb (p->w, p->events);
440 }
441 }
442}
443
444static void
445timers_reify () 1360timers_reify (EV_P)
446{ 1361{
447 while (timercnt && timers [0]->at <= now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
448 { 1363 {
449 struct ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
450 1365
451 event ((W)w, EV_TIMEOUT); 1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
452 1367
453 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
454 if (w->repeat) 1369 if (w->repeat)
455 { 1370 {
1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1372
456 w->at = now + w->repeat; 1373 ((WT)w)->at += w->repeat;
457 assert (("timer timeout in the past, negative repeat?", w->at > now)); 1374 if (((WT)w)->at < mn_now)
1375 ((WT)w)->at = mn_now;
1376
458 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
459 } 1378 }
460 else 1379 else
461 evtimer_stop (w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
462 }
463}
464 1381
465static void 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1383 }
1384}
1385
1386#if EV_PERIODIC_ENABLE
1387void inline_size
466periodics_reify () 1388periodics_reify (EV_P)
467{ 1389{
468 while (periodiccnt && periodics [0]->at <= ev_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
469 { 1391 {
470 struct ev_periodic *w = periodics [0]; 1392 ev_periodic *w = (ev_periodic *)periodics [0];
1393
1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
471 1395
472 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
473 if (w->interval) 1397 if (w->reschedule_cb)
474 { 1398 {
475 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
476 assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); 1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
477 downheap ((WT *)periodics, periodiccnt, 0); 1401 downheap (periodics, periodiccnt, 0);
1402 }
1403 else if (w->interval)
1404 {
1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1408 downheap (periodics, periodiccnt, 0);
478 } 1409 }
479 else 1410 else
480 evperiodic_stop (w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
481 1412
482 event ((W)w, EV_TIMEOUT); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
483 } 1414 }
484} 1415}
485 1416
486static void 1417static void noinline
487periodics_reschedule (ev_tstamp diff) 1418periodics_reschedule (EV_P)
488{ 1419{
489 int i; 1420 int i;
490 1421
491 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
492 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
493 { 1424 {
494 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
495 1426
1427 if (w->reschedule_cb)
1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
496 if (w->interval) 1429 else if (w->interval)
1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431 }
1432
1433 /* now rebuild the heap */
1434 for (i = periodiccnt >> 1; i--; )
1435 downheap (periodics, periodiccnt, i);
1436}
1437#endif
1438
1439#if EV_IDLE_ENABLE
1440void inline_size
1441idle_reify (EV_P)
1442{
1443 if (expect_false (idleall))
1444 {
1445 int pri;
1446
1447 for (pri = NUMPRI; pri--; )
497 { 1448 {
498 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1449 if (pendingcnt [pri])
1450 break;
499 1451
500 if (fabs (diff) >= 1e-4) 1452 if (idlecnt [pri])
501 { 1453 {
502 evperiodic_stop (w); 1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
503 evperiodic_start (w); 1455 break;
504
505 i = 0; /* restart loop, inefficient, but time jumps should be rare */
506 } 1456 }
507 } 1457 }
508 } 1458 }
509} 1459}
1460#endif
510 1461
511static void 1462void inline_speed
512time_update () 1463time_update (EV_P_ ev_tstamp max_block)
513{ 1464{
514 int i; 1465 int i;
515 1466
516 ev_now = ev_time (); 1467#if EV_USE_MONOTONIC
517
518 if (have_monotonic) 1468 if (expect_true (have_monotonic))
519 { 1469 {
520 ev_tstamp odiff = diff; 1470 ev_tstamp odiff = rtmn_diff;
521 1471
522 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1472 mn_now = get_clock ();
1473
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1475 /* interpolate in the meantime */
1476 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
523 { 1477 {
524 now = get_clock (); 1478 ev_rt_now = rtmn_diff + mn_now;
1479 return;
1480 }
1481
1482 now_floor = mn_now;
1483 ev_rt_now = ev_time ();
1484
1485 /* loop a few times, before making important decisions.
1486 * on the choice of "4": one iteration isn't enough,
1487 * in case we get preempted during the calls to
1488 * ev_time and get_clock. a second call is almost guaranteed
1489 * to succeed in that case, though. and looping a few more times
1490 * doesn't hurt either as we only do this on time-jumps or
1491 * in the unlikely event of having been preempted here.
1492 */
1493 for (i = 4; --i; )
1494 {
525 diff = ev_now - now; 1495 rtmn_diff = ev_rt_now - mn_now;
526 1496
527 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
528 return; /* all is well */ 1498 return; /* all is well */
529 1499
530 ev_now = ev_time (); 1500 ev_rt_now = ev_time ();
1501 mn_now = get_clock ();
1502 now_floor = mn_now;
531 } 1503 }
532 1504
1505# if EV_PERIODIC_ENABLE
533 periodics_reschedule (diff - odiff); 1506 periodics_reschedule (EV_A);
1507# endif
534 /* no timer adjustment, as the monotonic clock doesn't jump */ 1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
535 } 1510 }
536 else 1511 else
1512#endif
537 { 1513 {
538 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1514 ev_rt_now = ev_time ();
1515
1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
539 { 1517 {
1518#if EV_PERIODIC_ENABLE
540 periodics_reschedule (ev_now - now); 1519 periodics_reschedule (EV_A);
541 1520#endif
542 /* adjust timers. this is easy, as the offset is the same for all */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
543 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
544 timers [i]->at += diff; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
545 } 1524 }
546 1525
547 now = ev_now; 1526 mn_now = ev_rt_now;
548 }
549}
550
551int ev_loop_done;
552
553void ev_loop (int flags)
554{
555 double block;
556 ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;
557
558 if (checkcnt)
559 { 1527 }
560 queue_events ((W *)checks, checkcnt, EV_CHECK); 1528}
561 call_pending (); 1529
562 } 1530void
1531ev_ref (EV_P)
1532{
1533 ++activecnt;
1534}
1535
1536void
1537ev_unref (EV_P)
1538{
1539 --activecnt;
1540}
1541
1542static int loop_done;
1543
1544void
1545ev_loop (EV_P_ int flags)
1546{
1547 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1548 ? EVUNLOOP_ONE
1549 : EVUNLOOP_CANCEL;
1550
1551 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
563 1552
564 do 1553 do
565 { 1554 {
1555#ifndef _WIN32
1556 if (expect_false (curpid)) /* penalise the forking check even more */
1557 if (expect_false (getpid () != curpid))
1558 {
1559 curpid = getpid ();
1560 postfork = 1;
1561 }
1562#endif
1563
1564#if EV_FORK_ENABLE
1565 /* we might have forked, so queue fork handlers */
1566 if (expect_false (postfork))
1567 if (forkcnt)
1568 {
1569 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1570 call_pending (EV_A);
1571 }
1572#endif
1573
1574 /* queue prepare watchers (and execute them) */
1575 if (expect_false (preparecnt))
1576 {
1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1578 call_pending (EV_A);
1579 }
1580
1581 if (expect_false (!activecnt))
1582 break;
1583
1584 /* we might have forked, so reify kernel state if necessary */
1585 if (expect_false (postfork))
1586 loop_fork (EV_A);
1587
566 /* update fd-related kernel structures */ 1588 /* update fd-related kernel structures */
567 fd_reify (); 1589 fd_reify (EV_A);
568 1590
569 /* calculate blocking time */ 1591 /* calculate blocking time */
1592 {
1593 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.;
570 1595
571 /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ 1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
572 ev_now = ev_time ();
573
574 if (flags & EVLOOP_NONBLOCK || idlecnt)
575 block = 0.;
576 else
577 { 1597 {
1598 /* update time to cancel out callback processing overhead */
1599 time_update (EV_A_ 1e100);
1600
578 block = MAX_BLOCKTIME; 1601 waittime = MAX_BLOCKTIME;
579 1602
580 if (timercnt) 1603 if (timercnt)
581 { 1604 {
582 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
583 if (block > to) block = to; 1606 if (waittime > to) waittime = to;
584 } 1607 }
585 1608
1609#if EV_PERIODIC_ENABLE
586 if (periodiccnt) 1610 if (periodiccnt)
587 { 1611 {
588 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
589 if (block > to) block = to; 1613 if (waittime > to) waittime = to;
590 } 1614 }
1615#endif
591 1616
592 if (block < 0.) block = 0.; 1617 if (expect_false (waittime < timeout_blocktime))
1618 waittime = timeout_blocktime;
1619
1620 sleeptime = waittime - backend_fudge;
1621
1622 if (expect_true (sleeptime > io_blocktime))
1623 sleeptime = io_blocktime;
1624
1625 if (sleeptime)
1626 {
1627 ev_sleep (sleeptime);
1628 waittime -= sleeptime;
1629 }
593 } 1630 }
594 1631
595 method_poll (block); 1632 ++loop_count;
1633 backend_poll (EV_A_ waittime);
596 1634
597 /* update ev_now, do magic */ 1635 /* update ev_rt_now, do magic */
598 time_update (); 1636 time_update (EV_A_ waittime + sleeptime);
1637 }
599 1638
600 /* queue pending timers and reschedule them */ 1639 /* queue pending timers and reschedule them */
1640 timers_reify (EV_A); /* relative timers called last */
1641#if EV_PERIODIC_ENABLE
601 periodics_reify (); /* absolute timers first */ 1642 periodics_reify (EV_A); /* absolute timers called first */
602 timers_reify (); /* relative timers second */ 1643#endif
603 1644
1645#if EV_IDLE_ENABLE
604 /* queue idle watchers unless io or timers are pending */ 1646 /* queue idle watchers unless other events are pending */
605 if (!pendingcnt) 1647 idle_reify (EV_A);
606 queue_events ((W *)idles, idlecnt, EV_IDLE); 1648#endif
607 1649
608 /* queue check and possibly idle watchers */ 1650 /* queue check watchers, to be executed first */
1651 if (expect_false (checkcnt))
609 queue_events ((W *)checks, checkcnt, EV_CHECK); 1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
610 1653
611 call_pending (); 1654 call_pending (EV_A);
612 }
613 while (!ev_loop_done);
614 1655
615 if (ev_loop_done != 2) 1656 }
1657 while (expect_true (activecnt && !loop_done));
1658
1659 if (loop_done == EVUNLOOP_ONE)
1660 loop_done = EVUNLOOP_CANCEL;
1661}
1662
1663void
1664ev_unloop (EV_P_ int how)
1665{
616 ev_loop_done = 0; 1666 loop_done = how;
617} 1667}
618 1668
619/*****************************************************************************/ 1669/*****************************************************************************/
620 1670
621static void 1671void inline_size
622wlist_add (WL *head, WL elem) 1672wlist_add (WL *head, WL elem)
623{ 1673{
624 elem->next = *head; 1674 elem->next = *head;
625 *head = elem; 1675 *head = elem;
626} 1676}
627 1677
628static void 1678void inline_size
629wlist_del (WL *head, WL elem) 1679wlist_del (WL *head, WL elem)
630{ 1680{
631 while (*head) 1681 while (*head)
632 { 1682 {
633 if (*head == elem) 1683 if (*head == elem)
… …
638 1688
639 head = &(*head)->next; 1689 head = &(*head)->next;
640 } 1690 }
641} 1691}
642 1692
643static void 1693void inline_speed
644ev_clear (W w) 1694clear_pending (EV_P_ W w)
645{ 1695{
646 if (w->pending) 1696 if (w->pending)
647 { 1697 {
648 pendings [w->pending - 1].w = 0; 1698 pendings [ABSPRI (w)][w->pending - 1].w = 0;
649 w->pending = 0; 1699 w->pending = 0;
650 } 1700 }
651} 1701}
652 1702
653static void 1703int
1704ev_clear_pending (EV_P_ void *w)
1705{
1706 W w_ = (W)w;
1707 int pending = w_->pending;
1708
1709 if (expect_true (pending))
1710 {
1711 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1712 w_->pending = 0;
1713 p->w = 0;
1714 return p->events;
1715 }
1716 else
1717 return 0;
1718}
1719
1720void inline_size
1721pri_adjust (EV_P_ W w)
1722{
1723 int pri = w->priority;
1724 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1725 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1726 w->priority = pri;
1727}
1728
1729void inline_speed
654ev_start (W w, int active) 1730ev_start (EV_P_ W w, int active)
655{ 1731{
1732 pri_adjust (EV_A_ w);
656 w->active = active; 1733 w->active = active;
1734 ev_ref (EV_A);
657} 1735}
658 1736
659static void 1737void inline_size
660ev_stop (W w) 1738ev_stop (EV_P_ W w)
661{ 1739{
1740 ev_unref (EV_A);
662 w->active = 0; 1741 w->active = 0;
663} 1742}
664 1743
665/*****************************************************************************/ 1744/*****************************************************************************/
666 1745
667void 1746void noinline
668evio_start (struct ev_io *w) 1747ev_io_start (EV_P_ ev_io *w)
669{ 1748{
670 if (ev_is_active (w))
671 return;
672
673 int fd = w->fd; 1749 int fd = w->fd;
674 1750
1751 if (expect_false (ev_is_active (w)))
1752 return;
1753
1754 assert (("ev_io_start called with negative fd", fd >= 0));
1755
675 ev_start ((W)w, 1); 1756 ev_start (EV_A_ (W)w, 1);
676 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
677 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1758 wlist_add (&anfds[fd].head, (WL)w);
678 1759
679 ++fdchangecnt; 1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
680 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 1761 w->events &= ~EV_IOFDSET;
681 fdchanges [fdchangecnt - 1] = fd;
682} 1762}
683 1763
684void 1764void noinline
685evio_stop (struct ev_io *w) 1765ev_io_stop (EV_P_ ev_io *w)
686{ 1766{
687 ev_clear ((W)w); 1767 clear_pending (EV_A_ (W)w);
688 if (!ev_is_active (w)) 1768 if (expect_false (!ev_is_active (w)))
689 return; 1769 return;
690 1770
1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1772
691 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1773 wlist_del (&anfds[w->fd].head, (WL)w);
692 ev_stop ((W)w); 1774 ev_stop (EV_A_ (W)w);
693 1775
694 ++fdchangecnt; 1776 fd_change (EV_A_ w->fd, 1);
695 array_needsize (fdchanges, fdchangemax, fdchangecnt, );
696 fdchanges [fdchangecnt - 1] = w->fd;
697} 1777}
698 1778
699void 1779void noinline
700evtimer_start (struct ev_timer *w) 1780ev_timer_start (EV_P_ ev_timer *w)
701{ 1781{
702 if (ev_is_active (w)) 1782 if (expect_false (ev_is_active (w)))
703 return; 1783 return;
704 1784
705 w->at += now; 1785 ((WT)w)->at += mn_now;
706 1786
707 assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); 1787 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
708 1788
709 ev_start ((W)w, ++timercnt); 1789 ev_start (EV_A_ (W)w, ++timercnt);
710 array_needsize (timers, timermax, timercnt, ); 1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
711 timers [timercnt - 1] = w; 1791 timers [timercnt - 1] = (WT)w;
712 upheap ((WT *)timers, timercnt - 1); 1792 upheap (timers, timercnt - 1);
713}
714 1793
715void 1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1795}
1796
1797void noinline
716evtimer_stop (struct ev_timer *w) 1798ev_timer_stop (EV_P_ ev_timer *w)
717{ 1799{
718 ev_clear ((W)w); 1800 clear_pending (EV_A_ (W)w);
719 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
720 return; 1802 return;
721 1803
722 if (w->active < timercnt--) 1804 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1805
1806 {
1807 int active = ((W)w)->active;
1808
1809 if (expect_true (--active < --timercnt))
723 { 1810 {
724 timers [w->active - 1] = timers [timercnt]; 1811 timers [active] = timers [timercnt];
725 downheap ((WT *)timers, timercnt, w->active - 1); 1812 adjustheap (timers, timercnt, active);
726 } 1813 }
1814 }
727 1815
728 w->at = w->repeat; 1816 ((WT)w)->at -= mn_now;
729 1817
730 ev_stop ((W)w); 1818 ev_stop (EV_A_ (W)w);
731} 1819}
732 1820
733void 1821void noinline
734evtimer_again (struct ev_timer *w) 1822ev_timer_again (EV_P_ ev_timer *w)
735{ 1823{
736 if (ev_is_active (w)) 1824 if (ev_is_active (w))
737 { 1825 {
738 if (w->repeat) 1826 if (w->repeat)
739 { 1827 {
740 w->at = now + w->repeat; 1828 ((WT)w)->at = mn_now + w->repeat;
741 downheap ((WT *)timers, timercnt, w->active - 1); 1829 adjustheap (timers, timercnt, ((W)w)->active - 1);
742 } 1830 }
743 else 1831 else
744 evtimer_stop (w); 1832 ev_timer_stop (EV_A_ w);
745 } 1833 }
746 else if (w->repeat) 1834 else if (w->repeat)
1835 {
1836 w->at = w->repeat;
747 evtimer_start (w); 1837 ev_timer_start (EV_A_ w);
1838 }
748} 1839}
749 1840
750void 1841#if EV_PERIODIC_ENABLE
1842void noinline
751evperiodic_start (struct ev_periodic *w) 1843ev_periodic_start (EV_P_ ev_periodic *w)
752{ 1844{
753 if (ev_is_active (w)) 1845 if (expect_false (ev_is_active (w)))
754 return; 1846 return;
755 1847
756 assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); 1848 if (w->reschedule_cb)
757 1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1850 else if (w->interval)
1851 {
1852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
758 /* this formula differs from the one in periodic_reify because we do not always round up */ 1853 /* this formula differs from the one in periodic_reify because we do not always round up */
759 if (w->interval)
760 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1854 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1855 }
1856 else
1857 ((WT)w)->at = w->offset;
761 1858
762 ev_start ((W)w, ++periodiccnt); 1859 ev_start (EV_A_ (W)w, ++periodiccnt);
763 array_needsize (periodics, periodicmax, periodiccnt, ); 1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
764 periodics [periodiccnt - 1] = w; 1861 periodics [periodiccnt - 1] = (WT)w;
765 upheap ((WT *)periodics, periodiccnt - 1); 1862 upheap (periodics, periodiccnt - 1);
766}
767 1863
768void 1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1865}
1866
1867void noinline
769evperiodic_stop (struct ev_periodic *w) 1868ev_periodic_stop (EV_P_ ev_periodic *w)
770{ 1869{
771 ev_clear ((W)w); 1870 clear_pending (EV_A_ (W)w);
772 if (!ev_is_active (w)) 1871 if (expect_false (!ev_is_active (w)))
773 return; 1872 return;
774 1873
775 if (w->active < periodiccnt--) 1874 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1875
1876 {
1877 int active = ((W)w)->active;
1878
1879 if (expect_true (--active < --periodiccnt))
776 { 1880 {
777 periodics [w->active - 1] = periodics [periodiccnt]; 1881 periodics [active] = periodics [periodiccnt];
778 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1882 adjustheap (periodics, periodiccnt, active);
779 } 1883 }
1884 }
780 1885
781 ev_stop ((W)w); 1886 ev_stop (EV_A_ (W)w);
782} 1887}
783 1888
784void 1889void noinline
1890ev_periodic_again (EV_P_ ev_periodic *w)
1891{
1892 /* TODO: use adjustheap and recalculation */
1893 ev_periodic_stop (EV_A_ w);
1894 ev_periodic_start (EV_A_ w);
1895}
1896#endif
1897
1898#ifndef SA_RESTART
1899# define SA_RESTART 0
1900#endif
1901
1902void noinline
785evsignal_start (struct ev_signal *w) 1903ev_signal_start (EV_P_ ev_signal *w)
786{ 1904{
1905#if EV_MULTIPLICITY
1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907#endif
787 if (ev_is_active (w)) 1908 if (expect_false (ev_is_active (w)))
788 return; 1909 return;
789 1910
790 ev_start ((W)w, 1); 1911 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1912
1913 evpipe_init (EV_A);
1914
1915 {
1916#ifndef _WIN32
1917 sigset_t full, prev;
1918 sigfillset (&full);
1919 sigprocmask (SIG_SETMASK, &full, &prev);
1920#endif
1921
791 array_needsize (signals, signalmax, w->signum, signals_init); 1922 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1923
1924#ifndef _WIN32
1925 sigprocmask (SIG_SETMASK, &prev, 0);
1926#endif
1927 }
1928
1929 ev_start (EV_A_ (W)w, 1);
792 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1930 wlist_add (&signals [w->signum - 1].head, (WL)w);
793 1931
794 if (!w->next) 1932 if (!((WL)w)->next)
795 { 1933 {
1934#if _WIN32
1935 signal (w->signum, sighandler);
1936#else
796 struct sigaction sa; 1937 struct sigaction sa;
797 sa.sa_handler = sighandler; 1938 sa.sa_handler = sighandler;
798 sigfillset (&sa.sa_mask); 1939 sigfillset (&sa.sa_mask);
799 sa.sa_flags = 0; 1940 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
800 sigaction (w->signum, &sa, 0); 1941 sigaction (w->signum, &sa, 0);
1942#endif
801 } 1943 }
802} 1944}
803 1945
804void 1946void noinline
805evsignal_stop (struct ev_signal *w) 1947ev_signal_stop (EV_P_ ev_signal *w)
806{ 1948{
807 ev_clear ((W)w); 1949 clear_pending (EV_A_ (W)w);
808 if (!ev_is_active (w)) 1950 if (expect_false (!ev_is_active (w)))
809 return; 1951 return;
810 1952
811 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1953 wlist_del (&signals [w->signum - 1].head, (WL)w);
812 ev_stop ((W)w); 1954 ev_stop (EV_A_ (W)w);
813 1955
814 if (!signals [w->signum - 1].head) 1956 if (!signals [w->signum - 1].head)
815 signal (w->signum, SIG_DFL); 1957 signal (w->signum, SIG_DFL);
816} 1958}
817 1959
818void evidle_start (struct ev_idle *w) 1960void
1961ev_child_start (EV_P_ ev_child *w)
819{ 1962{
1963#if EV_MULTIPLICITY
1964 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1965#endif
820 if (ev_is_active (w)) 1966 if (expect_false (ev_is_active (w)))
821 return; 1967 return;
822 1968
823 ev_start ((W)w, ++idlecnt); 1969 ev_start (EV_A_ (W)w, 1);
824 array_needsize (idles, idlemax, idlecnt, ); 1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
825 idles [idlecnt - 1] = w;
826} 1971}
827 1972
828void evidle_stop (struct ev_idle *w) 1973void
1974ev_child_stop (EV_P_ ev_child *w)
829{ 1975{
830 ev_clear ((W)w); 1976 clear_pending (EV_A_ (W)w);
831 if (ev_is_active (w)) 1977 if (expect_false (!ev_is_active (w)))
832 return; 1978 return;
833 1979
834 idles [w->active - 1] = idles [--idlecnt]; 1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
835 ev_stop ((W)w); 1981 ev_stop (EV_A_ (W)w);
836} 1982}
837 1983
1984#if EV_STAT_ENABLE
1985
1986# ifdef _WIN32
1987# undef lstat
1988# define lstat(a,b) _stati64 (a,b)
1989# endif
1990
1991#define DEF_STAT_INTERVAL 5.0074891
1992#define MIN_STAT_INTERVAL 0.1074891
1993
1994static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1995
1996#if EV_USE_INOTIFY
1997# define EV_INOTIFY_BUFSIZE 8192
1998
1999static void noinline
2000infy_add (EV_P_ ev_stat *w)
2001{
2002 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);
2003
2004 if (w->wd < 0)
2005 {
2006 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2007
2008 /* monitor some parent directory for speedup hints */
2009 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2010 {
2011 char path [4096];
2012 strcpy (path, w->path);
2013
2014 do
2015 {
2016 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2017 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2018
2019 char *pend = strrchr (path, '/');
2020
2021 if (!pend)
2022 break; /* whoops, no '/', complain to your admin */
2023
2024 *pend = 0;
2025 w->wd = inotify_add_watch (fs_fd, path, mask);
2026 }
2027 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2028 }
2029 }
2030 else
2031 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2032
2033 if (w->wd >= 0)
2034 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2035}
2036
2037static void noinline
2038infy_del (EV_P_ ev_stat *w)
2039{
2040 int slot;
2041 int wd = w->wd;
2042
2043 if (wd < 0)
2044 return;
2045
2046 w->wd = -2;
2047 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2048 wlist_del (&fs_hash [slot].head, (WL)w);
2049
2050 /* remove this watcher, if others are watching it, they will rearm */
2051 inotify_rm_watch (fs_fd, wd);
2052}
2053
2054static void noinline
2055infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2056{
2057 if (slot < 0)
2058 /* overflow, need to check for all hahs slots */
2059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2060 infy_wd (EV_A_ slot, wd, ev);
2061 else
2062 {
2063 WL w_;
2064
2065 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2066 {
2067 ev_stat *w = (ev_stat *)w_;
2068 w_ = w_->next; /* lets us remove this watcher and all before it */
2069
2070 if (w->wd == wd || wd == -1)
2071 {
2072 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2073 {
2074 w->wd = -1;
2075 infy_add (EV_A_ w); /* re-add, no matter what */
2076 }
2077
2078 stat_timer_cb (EV_A_ &w->timer, 0);
2079 }
2080 }
2081 }
2082}
2083
2084static void
2085infy_cb (EV_P_ ev_io *w, int revents)
2086{
2087 char buf [EV_INOTIFY_BUFSIZE];
2088 struct inotify_event *ev = (struct inotify_event *)buf;
2089 int ofs;
2090 int len = read (fs_fd, buf, sizeof (buf));
2091
2092 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2093 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2094}
2095
2096void inline_size
2097infy_init (EV_P)
2098{
2099 if (fs_fd != -2)
2100 return;
2101
2102 fs_fd = inotify_init ();
2103
2104 if (fs_fd >= 0)
2105 {
2106 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2107 ev_set_priority (&fs_w, EV_MAXPRI);
2108 ev_io_start (EV_A_ &fs_w);
2109 }
2110}
2111
2112void inline_size
2113infy_fork (EV_P)
2114{
2115 int slot;
2116
2117 if (fs_fd < 0)
2118 return;
2119
2120 close (fs_fd);
2121 fs_fd = inotify_init ();
2122
2123 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2124 {
2125 WL w_ = fs_hash [slot].head;
2126 fs_hash [slot].head = 0;
2127
2128 while (w_)
2129 {
2130 ev_stat *w = (ev_stat *)w_;
2131 w_ = w_->next; /* lets us add this watcher */
2132
2133 w->wd = -1;
2134
2135 if (fs_fd >= 0)
2136 infy_add (EV_A_ w); /* re-add, no matter what */
2137 else
2138 ev_timer_start (EV_A_ &w->timer);
2139 }
2140
2141 }
2142}
2143
2144#endif
2145
2146void
2147ev_stat_stat (EV_P_ ev_stat *w)
2148{
2149 if (lstat (w->path, &w->attr) < 0)
2150 w->attr.st_nlink = 0;
2151 else if (!w->attr.st_nlink)
2152 w->attr.st_nlink = 1;
2153}
2154
2155static void noinline
2156stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2157{
2158 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2159
2160 /* we copy this here each the time so that */
2161 /* prev has the old value when the callback gets invoked */
2162 w->prev = w->attr;
2163 ev_stat_stat (EV_A_ w);
2164
2165 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2166 if (
2167 w->prev.st_dev != w->attr.st_dev
2168 || w->prev.st_ino != w->attr.st_ino
2169 || w->prev.st_mode != w->attr.st_mode
2170 || w->prev.st_nlink != w->attr.st_nlink
2171 || w->prev.st_uid != w->attr.st_uid
2172 || w->prev.st_gid != w->attr.st_gid
2173 || w->prev.st_rdev != w->attr.st_rdev
2174 || w->prev.st_size != w->attr.st_size
2175 || w->prev.st_atime != w->attr.st_atime
2176 || w->prev.st_mtime != w->attr.st_mtime
2177 || w->prev.st_ctime != w->attr.st_ctime
2178 ) {
2179 #if EV_USE_INOTIFY
2180 infy_del (EV_A_ w);
2181 infy_add (EV_A_ w);
2182 ev_stat_stat (EV_A_ w); /* avoid race... */
2183 #endif
2184
2185 ev_feed_event (EV_A_ w, EV_STAT);
2186 }
2187}
2188
2189void
2190ev_stat_start (EV_P_ ev_stat *w)
2191{
2192 if (expect_false (ev_is_active (w)))
2193 return;
2194
2195 /* since we use memcmp, we need to clear any padding data etc. */
2196 memset (&w->prev, 0, sizeof (ev_statdata));
2197 memset (&w->attr, 0, sizeof (ev_statdata));
2198
2199 ev_stat_stat (EV_A_ w);
2200
2201 if (w->interval < MIN_STAT_INTERVAL)
2202 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2203
2204 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2205 ev_set_priority (&w->timer, ev_priority (w));
2206
2207#if EV_USE_INOTIFY
2208 infy_init (EV_A);
2209
2210 if (fs_fd >= 0)
2211 infy_add (EV_A_ w);
2212 else
2213#endif
2214 ev_timer_start (EV_A_ &w->timer);
2215
2216 ev_start (EV_A_ (W)w, 1);
2217}
2218
2219void
2220ev_stat_stop (EV_P_ ev_stat *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226#if EV_USE_INOTIFY
2227 infy_del (EV_A_ w);
2228#endif
2229 ev_timer_stop (EV_A_ &w->timer);
2230
2231 ev_stop (EV_A_ (W)w);
2232}
2233#endif
2234
2235#if EV_IDLE_ENABLE
2236void
2237ev_idle_start (EV_P_ ev_idle *w)
2238{
2239 if (expect_false (ev_is_active (w)))
2240 return;
2241
2242 pri_adjust (EV_A_ (W)w);
2243
2244 {
2245 int active = ++idlecnt [ABSPRI (w)];
2246
2247 ++idleall;
2248 ev_start (EV_A_ (W)w, active);
2249
2250 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2251 idles [ABSPRI (w)][active - 1] = w;
2252 }
2253}
2254
2255void
2256ev_idle_stop (EV_P_ ev_idle *w)
2257{
2258 clear_pending (EV_A_ (W)w);
2259 if (expect_false (!ev_is_active (w)))
2260 return;
2261
2262 {
2263 int active = ((W)w)->active;
2264
2265 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2266 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2267
2268 ev_stop (EV_A_ (W)w);
2269 --idleall;
2270 }
2271}
2272#endif
2273
2274void
2275ev_prepare_start (EV_P_ ev_prepare *w)
2276{
2277 if (expect_false (ev_is_active (w)))
2278 return;
2279
2280 ev_start (EV_A_ (W)w, ++preparecnt);
2281 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2282 prepares [preparecnt - 1] = w;
2283}
2284
2285void
2286ev_prepare_stop (EV_P_ ev_prepare *w)
2287{
2288 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w)))
2290 return;
2291
2292 {
2293 int active = ((W)w)->active;
2294 prepares [active - 1] = prepares [--preparecnt];
2295 ((W)prepares [active - 1])->active = active;
2296 }
2297
2298 ev_stop (EV_A_ (W)w);
2299}
2300
2301void
838void evcheck_start (struct ev_check *w) 2302ev_check_start (EV_P_ ev_check *w)
839{ 2303{
840 if (ev_is_active (w)) 2304 if (expect_false (ev_is_active (w)))
841 return; 2305 return;
842 2306
843 ev_start ((W)w, ++checkcnt); 2307 ev_start (EV_A_ (W)w, ++checkcnt);
844 array_needsize (checks, checkmax, checkcnt, ); 2308 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
845 checks [checkcnt - 1] = w; 2309 checks [checkcnt - 1] = w;
846} 2310}
847 2311
2312void
848void evcheck_stop (struct ev_check *w) 2313ev_check_stop (EV_P_ ev_check *w)
849{ 2314{
850 ev_clear ((W)w); 2315 clear_pending (EV_A_ (W)w);
851 if (ev_is_active (w)) 2316 if (expect_false (!ev_is_active (w)))
852 return; 2317 return;
853 2318
2319 {
2320 int active = ((W)w)->active;
854 checks [w->active - 1] = checks [--checkcnt]; 2321 checks [active - 1] = checks [--checkcnt];
2322 ((W)checks [active - 1])->active = active;
2323 }
2324
855 ev_stop ((W)w); 2325 ev_stop (EV_A_ (W)w);
856} 2326}
2327
2328#if EV_EMBED_ENABLE
2329void noinline
2330ev_embed_sweep (EV_P_ ev_embed *w)
2331{
2332 ev_loop (w->other, EVLOOP_NONBLOCK);
2333}
2334
2335static void
2336embed_io_cb (EV_P_ ev_io *io, int revents)
2337{
2338 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2339
2340 if (ev_cb (w))
2341 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2342 else
2343 ev_loop (w->other, EVLOOP_NONBLOCK);
2344}
2345
2346static void
2347embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2348{
2349 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2350
2351 {
2352 struct ev_loop *loop = w->other;
2353
2354 while (fdchangecnt)
2355 {
2356 fd_reify (EV_A);
2357 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2358 }
2359 }
2360}
2361
2362#if 0
2363static void
2364embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2365{
2366 ev_idle_stop (EV_A_ idle);
2367}
2368#endif
2369
2370void
2371ev_embed_start (EV_P_ ev_embed *w)
2372{
2373 if (expect_false (ev_is_active (w)))
2374 return;
2375
2376 {
2377 struct ev_loop *loop = w->other;
2378 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2379 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2380 }
2381
2382 ev_set_priority (&w->io, ev_priority (w));
2383 ev_io_start (EV_A_ &w->io);
2384
2385 ev_prepare_init (&w->prepare, embed_prepare_cb);
2386 ev_set_priority (&w->prepare, EV_MINPRI);
2387 ev_prepare_start (EV_A_ &w->prepare);
2388
2389 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2390
2391 ev_start (EV_A_ (W)w, 1);
2392}
2393
2394void
2395ev_embed_stop (EV_P_ ev_embed *w)
2396{
2397 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w)))
2399 return;
2400
2401 ev_io_stop (EV_A_ &w->io);
2402 ev_prepare_stop (EV_A_ &w->prepare);
2403
2404 ev_stop (EV_A_ (W)w);
2405}
2406#endif
2407
2408#if EV_FORK_ENABLE
2409void
2410ev_fork_start (EV_P_ ev_fork *w)
2411{
2412 if (expect_false (ev_is_active (w)))
2413 return;
2414
2415 ev_start (EV_A_ (W)w, ++forkcnt);
2416 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2417 forks [forkcnt - 1] = w;
2418}
2419
2420void
2421ev_fork_stop (EV_P_ ev_fork *w)
2422{
2423 clear_pending (EV_A_ (W)w);
2424 if (expect_false (!ev_is_active (w)))
2425 return;
2426
2427 {
2428 int active = ((W)w)->active;
2429 forks [active - 1] = forks [--forkcnt];
2430 ((W)forks [active - 1])->active = active;
2431 }
2432
2433 ev_stop (EV_A_ (W)w);
2434}
2435#endif
2436
2437#if EV_ASYNC_ENABLE
2438void
2439ev_async_start (EV_P_ ev_async *w)
2440{
2441 if (expect_false (ev_is_active (w)))
2442 return;
2443
2444 evpipe_init (EV_A);
2445
2446 ev_start (EV_A_ (W)w, ++asynccnt);
2447 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2448 asyncs [asynccnt - 1] = w;
2449}
2450
2451void
2452ev_async_stop (EV_P_ ev_async *w)
2453{
2454 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w)))
2456 return;
2457
2458 {
2459 int active = ((W)w)->active;
2460 asyncs [active - 1] = asyncs [--asynccnt];
2461 ((W)asyncs [active - 1])->active = active;
2462 }
2463
2464 ev_stop (EV_A_ (W)w);
2465}
2466
2467void
2468ev_async_send (EV_P_ ev_async *w)
2469{
2470 w->sent = 1;
2471 evpipe_write (EV_A_ &gotasync);
2472}
2473#endif
857 2474
858/*****************************************************************************/ 2475/*****************************************************************************/
859 2476
860struct ev_once 2477struct ev_once
861{ 2478{
862 struct ev_io io; 2479 ev_io io;
863 struct ev_timer to; 2480 ev_timer to;
864 void (*cb)(int revents, void *arg); 2481 void (*cb)(int revents, void *arg);
865 void *arg; 2482 void *arg;
866}; 2483};
867 2484
868static void 2485static void
869once_cb (struct ev_once *once, int revents) 2486once_cb (EV_P_ struct ev_once *once, int revents)
870{ 2487{
871 void (*cb)(int revents, void *arg) = once->cb; 2488 void (*cb)(int revents, void *arg) = once->cb;
872 void *arg = once->arg; 2489 void *arg = once->arg;
873 2490
874 evio_stop (&once->io); 2491 ev_io_stop (EV_A_ &once->io);
875 evtimer_stop (&once->to); 2492 ev_timer_stop (EV_A_ &once->to);
876 free (once); 2493 ev_free (once);
877 2494
878 cb (revents, arg); 2495 cb (revents, arg);
879} 2496}
880 2497
881static void 2498static void
882once_cb_io (struct ev_io *w, int revents) 2499once_cb_io (EV_P_ ev_io *w, int revents)
883{ 2500{
884 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2501 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
885} 2502}
886 2503
887static void 2504static void
888once_cb_to (struct ev_timer *w, int revents) 2505once_cb_to (EV_P_ ev_timer *w, int revents)
889{ 2506{
890 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2507 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
891} 2508}
892 2509
893void 2510void
894ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2511ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
895{ 2512{
896 struct ev_once *once = malloc (sizeof (struct ev_once)); 2513 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
897 2514
898 if (!once) 2515 if (expect_false (!once))
899 cb (EV_ERROR, arg); 2516 {
900 else 2517 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2518 return;
901 { 2519 }
2520
902 once->cb = cb; 2521 once->cb = cb;
903 once->arg = arg; 2522 once->arg = arg;
904 2523
905 evw_init (&once->io, once_cb_io); 2524 ev_init (&once->io, once_cb_io);
906
907 if (fd >= 0) 2525 if (fd >= 0)
908 { 2526 {
909 evio_set (&once->io, fd, events); 2527 ev_io_set (&once->io, fd, events);
910 evio_start (&once->io); 2528 ev_io_start (EV_A_ &once->io);
911 } 2529 }
912 2530
913 evw_init (&once->to, once_cb_to); 2531 ev_init (&once->to, once_cb_to);
914
915 if (timeout >= 0.) 2532 if (timeout >= 0.)
916 { 2533 {
917 evtimer_set (&once->to, timeout, 0.); 2534 ev_timer_set (&once->to, timeout, 0.);
918 evtimer_start (&once->to); 2535 ev_timer_start (EV_A_ &once->to);
919 }
920 }
921}
922
923/*****************************************************************************/
924
925#if 0
926
927struct ev_io wio;
928
929static void
930sin_cb (struct ev_io *w, int revents)
931{
932 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
933}
934
935static void
936ocb (struct ev_timer *w, int revents)
937{
938 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
939 evtimer_stop (w);
940 evtimer_start (w);
941}
942
943static void
944scb (struct ev_signal *w, int revents)
945{
946 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
947 evio_stop (&wio);
948 evio_start (&wio);
949}
950
951static void
952gcb (struct ev_signal *w, int revents)
953{
954 fprintf (stderr, "generic %x\n", revents);
955
956}
957
958int main (void)
959{
960 ev_init (0);
961
962 evio_init (&wio, sin_cb, 0, EV_READ);
963 evio_start (&wio);
964
965 struct ev_timer t[10000];
966
967#if 0
968 int i;
969 for (i = 0; i < 10000; ++i)
970 { 2536 }
971 struct ev_timer *w = t + i;
972 evw_init (w, ocb, i);
973 evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
974 evtimer_start (w);
975 if (drand48 () < 0.5)
976 evtimer_stop (w);
977 }
978#endif
979
980 struct ev_timer t1;
981 evtimer_init (&t1, ocb, 5, 10);
982 evtimer_start (&t1);
983
984 struct ev_signal sig;
985 evsignal_init (&sig, scb, SIGQUIT);
986 evsignal_start (&sig);
987
988 struct ev_check cw;
989 evcheck_init (&cw, gcb);
990 evcheck_start (&cw);
991
992 struct ev_idle iw;
993 evidle_init (&iw, gcb);
994 evidle_start (&iw);
995
996 ev_loop (0);
997
998 return 0;
999} 2537}
1000 2538
2539#if EV_MULTIPLICITY
2540 #include "ev_wrap.h"
1001#endif 2541#endif
1002 2542
2543#ifdef __cplusplus
2544}
2545#endif
1003 2546
1004
1005

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