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Comparing libev/ev.c (file contents):
Revision 1.18 by root, Wed Oct 31 16:29:52 2007 UTC vs.
Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management
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#define HAVE_EPOLL 1 137#include <signal.h>
45 138
46#ifndef HAVE_MONOTONIC 139#ifdef EV_H
47# ifdef CLOCK_MONOTONIC 140# include EV_H
48# define HAVE_MONOTONIC 1 141#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
49# endif 154# endif
50#endif 155#endif
51 156
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
52#ifndef HAVE_SELECT 171#ifndef EV_USE_SELECT
53# 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
54#endif 180# endif
181#endif
55 182
56#ifndef HAVE_EPOLL 183#ifndef EV_USE_EPOLL
57# 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
58#endif 204# endif
205#endif
59 206
60#ifndef HAVE_REALTIME 207#ifndef EV_INOTIFY_HASHSIZE
61# 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
62#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 */
63 257
64#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) */
65#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 */
66 261
67#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
68 272
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
69typedef struct ev_watcher *W; 289typedef ev_watcher *W;
70typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
71typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
72 292
73static 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
74ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
75int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
76 399
77static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
78 401
79static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
80static void (*method_modify)(int fd, int oev, int nev);
81static void (*method_poll)(ev_tstamp timeout);
82 403
83/*****************************************************************************/ 404/*****************************************************************************/
84 405
85ev_tstamp 406ev_tstamp
86ev_time (void) 407ev_time (void)
87{ 408{
88#if HAVE_REALTIME 409#if EV_USE_REALTIME
89 struct timespec ts; 410 struct timespec ts;
90 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
91 return ts.tv_sec + ts.tv_nsec * 1e-9; 412 return ts.tv_sec + ts.tv_nsec * 1e-9;
92#else 413#else
93 struct timeval tv; 414 struct timeval tv;
94 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
95 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
96#endif 417#endif
97} 418}
98 419
99static ev_tstamp 420ev_tstamp inline_size
100get_clock (void) 421get_clock (void)
101{ 422{
102#if HAVE_MONOTONIC 423#if EV_USE_MONOTONIC
103 if (have_monotonic) 424 if (expect_true (have_monotonic))
104 { 425 {
105 struct timespec ts; 426 struct timespec ts;
106 clock_gettime (CLOCK_MONOTONIC, &ts); 427 clock_gettime (CLOCK_MONOTONIC, &ts);
107 return ts.tv_sec + ts.tv_nsec * 1e-9; 428 return ts.tv_sec + ts.tv_nsec * 1e-9;
108 } 429 }
109#endif 430#endif
110 431
111 return ev_time (); 432 return ev_time ();
112} 433}
113 434
114#define array_needsize(base,cur,cnt,init) \ 435#if EV_MULTIPLICITY
115 if ((cnt) > cur) \ 436ev_tstamp
116 { \ 437ev_now (EV_P)
117 int newcnt = cur ? cur << 1 : 16; \ 438{
118 base = realloc (base, sizeof (*base) * (newcnt)); \ 439 return ev_rt_now;
119 init (base + cur, newcnt - cur); \ 440}
120 cur = newcnt; \ 441#endif
442
443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
121 } 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}
122 467
123/*****************************************************************************/ 468/*****************************************************************************/
124 469
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
125typedef struct 765typedef struct
126{ 766{
127 struct ev_io *head; 767 WL head;
128 unsigned char wev, rev; /* want, received event set */ 768 EV_ATOMIC_T gotsig;
129} ANFD;
130
131static ANFD *anfds;
132static int anfdmax;
133
134static int *fdchanges;
135static int fdchangemax, fdchangecnt;
136
137static void
138anfds_init (ANFD *base, int count)
139{
140 while (count--)
141 {
142 base->head = 0;
143 base->wev = base->rev = EV_NONE;
144 ++base;
145 }
146}
147
148typedef struct
149{
150 W w;
151 int events;
152} ANPENDING;
153
154static ANPENDING *pendings;
155static int pendingmax, pendingcnt;
156
157static void
158event (W w, int events)
159{
160 if (w->active)
161 {
162 w->pending = ++pendingcnt;
163 array_needsize (pendings, pendingmax, pendingcnt, );
164 pendings [pendingcnt - 1].w = w;
165 pendings [pendingcnt - 1].events = events;
166 }
167}
168
169static void
170fd_event (int fd, int events)
171{
172 ANFD *anfd = anfds + fd;
173 struct ev_io *w;
174
175 for (w = anfd->head; w; w = w->next)
176 {
177 int ev = w->events & events;
178
179 if (ev)
180 event ((W)w, ev);
181 }
182}
183
184static void
185queue_events (W *events, int eventcnt, int type)
186{
187 int i;
188
189 for (i = 0; i < eventcnt; ++i)
190 event (events [i], type);
191}
192
193/*****************************************************************************/
194
195static struct ev_timer **timers;
196static int timermax, timercnt;
197
198static struct ev_periodic **periodics;
199static int periodicmax, periodiccnt;
200
201static void
202upheap (WT *timers, int k)
203{
204 WT w = timers [k];
205
206 while (k && timers [k >> 1]->at > w->at)
207 {
208 timers [k] = timers [k >> 1];
209 timers [k]->active = k + 1;
210 k >>= 1;
211 }
212
213 timers [k] = w;
214 timers [k]->active = k + 1;
215
216}
217
218static void
219downheap (WT *timers, int N, int k)
220{
221 WT w = timers [k];
222
223 while (k < (N >> 1))
224 {
225 int j = k << 1;
226
227 if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
228 ++j;
229
230 if (w->at <= timers [j]->at)
231 break;
232
233 timers [k] = timers [j];
234 timers [k]->active = k + 1;
235 k = j;
236 }
237
238 timers [k] = w;
239 timers [k]->active = k + 1;
240}
241
242/*****************************************************************************/
243
244typedef struct
245{
246 struct ev_signal *head;
247 sig_atomic_t gotsig;
248} ANSIG; 769} ANSIG;
249 770
250static ANSIG *signals; 771static ANSIG *signals;
251static int signalmax; 772static int signalmax;
252 773
253static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
254static sig_atomic_t gotsig;
255static struct ev_io sigev;
256 775
257static void 776void inline_size
258signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
259{ 778{
260 while (count--) 779 while (count--)
261 { 780 {
262 base->head = 0; 781 base->head = 0;
263 base->gotsig = 0; 782 base->gotsig = 0;
783
264 ++base; 784 ++base;
265 } 785 }
266} 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 /* in case we received the signal before we had the chance of installing a handler */
818 ev_feed_event (EV_A_ &pipeev, 0);
819 }
820}
821
822void inline_size
823evpipe_write (EV_P_ int sig, int async)
824{
825 if (!(gotasync || gotsig))
826 {
827 int old_errno = errno; /* save errno becaue write might clobber it */
828
829 if (sig) gotsig = 1;
830 if (async) gotasync = 1;
831
832 write (evpipe [1], &old_errno, 1);
833
834 errno = old_errno;
835 }
836}
837
838static void
839pipecb (EV_P_ ev_io *iow, int revents)
840{
841 {
842 int dummy;
843 read (evpipe [0], &dummy, 1);
844 }
845
846 if (gotsig && ev_is_default_loop (EV_A))
847 {
848 int signum;
849 gotsig = 0;
850
851 for (signum = signalmax; signum--; )
852 if (signals [signum].gotsig)
853 ev_feed_signal_event (EV_A_ signum + 1);
854 }
855
856#if EV_ASYNC_ENABLE
857 if (gotasync)
858 {
859 int i;
860 gotasync = 0;
861
862 for (i = asynccnt; i--; )
863 if (asyncs [i]->sent)
864 {
865 asyncs [i]->sent = 0;
866 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
867 }
868 }
869#endif
870}
871
872/*****************************************************************************/
267 873
268static void 874static void
269sighandler (int signum) 875sighandler (int signum)
270{ 876{
877#if EV_MULTIPLICITY
878 struct ev_loop *loop = &default_loop_struct;
879#endif
880
881#if _WIN32
882 signal (signum, sighandler);
883#endif
884
271 signals [signum - 1].gotsig = 1; 885 signals [signum - 1].gotsig = 1;
886 evpipe_write (EV_A_ 1, 0);
887}
272 888
273 if (!gotsig) 889void noinline
274 { 890ev_feed_signal_event (EV_P_ int signum)
275 gotsig = 1; 891{
276 write (sigpipe [1], &gotsig, 1); 892 WL w;
893
894#if EV_MULTIPLICITY
895 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
896#endif
897
898 --signum;
899
900 if (signum < 0 || signum >= signalmax)
901 return;
902
903 signals [signum].gotsig = 0;
904
905 for (w = signals [signum].head; w; w = w->next)
906 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
907}
908
909/*****************************************************************************/
910
911static WL childs [EV_PID_HASHSIZE];
912
913#ifndef _WIN32
914
915static ev_signal childev;
916
917#ifndef WIFCONTINUED
918# define WIFCONTINUED(status) 0
919#endif
920
921void inline_speed
922child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
923{
924 ev_child *w;
925 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
926
927 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
277 } 928 {
929 if ((w->pid == pid || !w->pid)
930 && (!traced || (w->flags & 1)))
931 {
932 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
933 w->rpid = pid;
934 w->rstatus = status;
935 ev_feed_event (EV_A_ (W)w, EV_CHILD);
936 }
937 }
278} 938}
939
940#ifndef WCONTINUED
941# define WCONTINUED 0
942#endif
279 943
280static void 944static void
281sigcb (struct ev_io *iow, int revents) 945childcb (EV_P_ ev_signal *sw, int revents)
282{ 946{
283 struct ev_signal *w; 947 int pid, status;
284 int sig;
285 948
286 gotsig = 0; 949 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
287 read (sigpipe [0], &revents, 1); 950 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
951 if (!WCONTINUED
952 || errno != EINVAL
953 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
954 return;
288 955
289 for (sig = signalmax; sig--; ) 956 /* make sure we are called again until all childs have been reaped */
290 if (signals [sig].gotsig) 957 /* we need to do it this way so that the callback gets called before we continue */
958 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
959
960 child_reap (EV_A_ sw, pid, pid, status);
961 if (EV_PID_HASHSIZE > 1)
962 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
963}
964
965#endif
966
967/*****************************************************************************/
968
969#if EV_USE_PORT
970# include "ev_port.c"
971#endif
972#if EV_USE_KQUEUE
973# include "ev_kqueue.c"
974#endif
975#if EV_USE_EPOLL
976# include "ev_epoll.c"
977#endif
978#if EV_USE_POLL
979# include "ev_poll.c"
980#endif
981#if EV_USE_SELECT
982# include "ev_select.c"
983#endif
984
985int
986ev_version_major (void)
987{
988 return EV_VERSION_MAJOR;
989}
990
991int
992ev_version_minor (void)
993{
994 return EV_VERSION_MINOR;
995}
996
997/* return true if we are running with elevated privileges and should ignore env variables */
998int inline_size
999enable_secure (void)
1000{
1001#ifdef _WIN32
1002 return 0;
1003#else
1004 return getuid () != geteuid ()
1005 || getgid () != getegid ();
1006#endif
1007}
1008
1009unsigned int
1010ev_supported_backends (void)
1011{
1012 unsigned int flags = 0;
1013
1014 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1015 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1016 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1017 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1018 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1019
1020 return flags;
1021}
1022
1023unsigned int
1024ev_recommended_backends (void)
1025{
1026 unsigned int flags = ev_supported_backends ();
1027
1028#ifndef __NetBSD__
1029 /* kqueue is borked on everything but netbsd apparently */
1030 /* it usually doesn't work correctly on anything but sockets and pipes */
1031 flags &= ~EVBACKEND_KQUEUE;
1032#endif
1033#ifdef __APPLE__
1034 // flags &= ~EVBACKEND_KQUEUE; for documentation
1035 flags &= ~EVBACKEND_POLL;
1036#endif
1037
1038 return flags;
1039}
1040
1041unsigned int
1042ev_embeddable_backends (void)
1043{
1044 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1045
1046 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1047 /* please fix it and tell me how to detect the fix */
1048 flags &= ~EVBACKEND_EPOLL;
1049
1050 return flags;
1051}
1052
1053unsigned int
1054ev_backend (EV_P)
1055{
1056 return backend;
1057}
1058
1059unsigned int
1060ev_loop_count (EV_P)
1061{
1062 return loop_count;
1063}
1064
1065void
1066ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 io_blocktime = interval;
1069}
1070
1071void
1072ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1073{
1074 timeout_blocktime = interval;
1075}
1076
1077static void noinline
1078loop_init (EV_P_ unsigned int flags)
1079{
1080 if (!backend)
1081 {
1082#if EV_USE_MONOTONIC
291 { 1083 {
292 signals [sig].gotsig = 0; 1084 struct timespec ts;
293 1085 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
294 for (w = signals [sig].head; w; w = w->next) 1086 have_monotonic = 1;
295 event ((W)w, EV_SIGNAL);
296 } 1087 }
297} 1088#endif
298 1089
299static void 1090 ev_rt_now = ev_time ();
300siginit (void) 1091 mn_now = get_clock ();
301{ 1092 now_floor = mn_now;
302 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 1093 rtmn_diff = ev_rt_now - mn_now;
303 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
304 1094
305 /* rather than sort out wether we really need nb, set it */ 1095 io_blocktime = 0.;
306 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 1096 timeout_blocktime = 0.;
307 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 1097 backend = 0;
1098 backend_fd = -1;
1099 gotasync = 0;
1100#if EV_USE_INOTIFY
1101 fs_fd = -2;
1102#endif
308 1103
309 evio_set (&sigev, sigpipe [0], EV_READ); 1104 /* pid check not overridable via env */
310 evio_start (&sigev); 1105#ifndef _WIN32
1106 if (flags & EVFLAG_FORKCHECK)
1107 curpid = getpid ();
1108#endif
1109
1110 if (!(flags & EVFLAG_NOENV)
1111 && !enable_secure ()
1112 && getenv ("LIBEV_FLAGS"))
1113 flags = atoi (getenv ("LIBEV_FLAGS"));
1114
1115 if (!(flags & 0x0000ffffUL))
1116 flags |= ev_recommended_backends ();
1117
1118#if EV_USE_PORT
1119 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1120#endif
1121#if EV_USE_KQUEUE
1122 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1123#endif
1124#if EV_USE_EPOLL
1125 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1126#endif
1127#if EV_USE_POLL
1128 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1129#endif
1130#if EV_USE_SELECT
1131 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1132#endif
1133
1134 ev_init (&pipeev, pipecb);
1135 ev_set_priority (&pipeev, EV_MAXPRI);
1136 }
1137}
1138
1139static void noinline
1140loop_destroy (EV_P)
1141{
1142 int i;
1143
1144 if (ev_is_active (&pipeev))
1145 {
1146 ev_ref (EV_A); /* signal watcher */
1147 ev_io_stop (EV_A_ &pipeev);
1148
1149 close (evpipe [0]); evpipe [0] = 0;
1150 close (evpipe [1]); evpipe [1] = 0;
1151 }
1152
1153#if EV_USE_INOTIFY
1154 if (fs_fd >= 0)
1155 close (fs_fd);
1156#endif
1157
1158 if (backend_fd >= 0)
1159 close (backend_fd);
1160
1161#if EV_USE_PORT
1162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1163#endif
1164#if EV_USE_KQUEUE
1165 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1166#endif
1167#if EV_USE_EPOLL
1168 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1169#endif
1170#if EV_USE_POLL
1171 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1172#endif
1173#if EV_USE_SELECT
1174 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1175#endif
1176
1177 for (i = NUMPRI; i--; )
1178 {
1179 array_free (pending, [i]);
1180#if EV_IDLE_ENABLE
1181 array_free (idle, [i]);
1182#endif
1183 }
1184
1185 ev_free (anfds); anfdmax = 0;
1186
1187 /* have to use the microsoft-never-gets-it-right macro */
1188 array_free (fdchange, EMPTY);
1189 array_free (timer, EMPTY);
1190#if EV_PERIODIC_ENABLE
1191 array_free (periodic, EMPTY);
1192#endif
1193#if EV_FORK_ENABLE
1194 array_free (fork, EMPTY);
1195#endif
1196 array_free (prepare, EMPTY);
1197 array_free (check, EMPTY);
1198#if EV_ASYNC_ENABLE
1199 array_free (async, EMPTY);
1200#endif
1201
1202 backend = 0;
1203}
1204
1205void inline_size infy_fork (EV_P);
1206
1207void inline_size
1208loop_fork (EV_P)
1209{
1210#if EV_USE_PORT
1211 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1212#endif
1213#if EV_USE_KQUEUE
1214 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1215#endif
1216#if EV_USE_EPOLL
1217 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1218#endif
1219#if EV_USE_INOTIFY
1220 infy_fork (EV_A);
1221#endif
1222
1223 if (ev_is_active (&pipeev))
1224 {
1225 /* this "locks" the handlers against writing to the pipe */
1226 gotsig = gotasync = 1;
1227
1228 ev_ref (EV_A);
1229 ev_io_stop (EV_A_ &pipeev);
1230 close (evpipe [0]);
1231 close (evpipe [1]);
1232
1233 evpipe_init (EV_A);
1234 /* now iterate over everything, in case we missed something */
1235 pipecb (EV_A_ &pipeev, EV_READ);
1236 }
1237
1238 postfork = 0;
1239}
1240
1241#if EV_MULTIPLICITY
1242struct ev_loop *
1243ev_loop_new (unsigned int flags)
1244{
1245 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1246
1247 memset (loop, 0, sizeof (struct ev_loop));
1248
1249 loop_init (EV_A_ flags);
1250
1251 if (ev_backend (EV_A))
1252 return loop;
1253
1254 return 0;
1255}
1256
1257void
1258ev_loop_destroy (EV_P)
1259{
1260 loop_destroy (EV_A);
1261 ev_free (loop);
1262}
1263
1264void
1265ev_loop_fork (EV_P)
1266{
1267 postfork = 1; /* must be in line with ev_default_fork */
1268}
1269
1270#endif
1271
1272#if EV_MULTIPLICITY
1273struct ev_loop *
1274ev_default_loop_init (unsigned int flags)
1275#else
1276int
1277ev_default_loop (unsigned int flags)
1278#endif
1279{
1280 if (!ev_default_loop_ptr)
1281 {
1282#if EV_MULTIPLICITY
1283 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1284#else
1285 ev_default_loop_ptr = 1;
1286#endif
1287
1288 loop_init (EV_A_ flags);
1289
1290 if (ev_backend (EV_A))
1291 {
1292#ifndef _WIN32
1293 ev_signal_init (&childev, childcb, SIGCHLD);
1294 ev_set_priority (&childev, EV_MAXPRI);
1295 ev_signal_start (EV_A_ &childev);
1296 ev_unref (EV_A); /* child watcher should not keep loop alive */
1297#endif
1298 }
1299 else
1300 ev_default_loop_ptr = 0;
1301 }
1302
1303 return ev_default_loop_ptr;
1304}
1305
1306void
1307ev_default_destroy (void)
1308{
1309#if EV_MULTIPLICITY
1310 struct ev_loop *loop = ev_default_loop_ptr;
1311#endif
1312
1313#ifndef _WIN32
1314 ev_ref (EV_A); /* child watcher */
1315 ev_signal_stop (EV_A_ &childev);
1316#endif
1317
1318 loop_destroy (EV_A);
1319}
1320
1321void
1322ev_default_fork (void)
1323{
1324#if EV_MULTIPLICITY
1325 struct ev_loop *loop = ev_default_loop_ptr;
1326#endif
1327
1328 if (backend)
1329 postfork = 1; /* must be in line with ev_loop_fork */
311} 1330}
312 1331
313/*****************************************************************************/ 1332/*****************************************************************************/
314 1333
315static struct ev_idle **idles; 1334void
316static int idlemax, idlecnt; 1335ev_invoke (EV_P_ void *w, int revents)
317
318static struct ev_check **checks;
319static int checkmax, checkcnt;
320
321/*****************************************************************************/
322
323#if HAVE_EPOLL
324# include "ev_epoll.c"
325#endif
326#if HAVE_SELECT
327# include "ev_select.c"
328#endif
329
330int ev_init (int flags)
331{ 1336{
332#if HAVE_MONOTONIC 1337 EV_CB_INVOKE ((W)w, revents);
333 {
334 struct timespec ts;
335 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
336 have_monotonic = 1;
337 }
338#endif
339
340 ev_now = ev_time ();
341 now = get_clock ();
342 diff = ev_now - now;
343
344 if (pipe (sigpipe))
345 return 0;
346
347 ev_method = EVMETHOD_NONE;
348#if HAVE_EPOLL
349 if (ev_method == EVMETHOD_NONE) epoll_init (flags);
350#endif
351#if HAVE_SELECT
352 if (ev_method == EVMETHOD_NONE) select_init (flags);
353#endif
354
355 if (ev_method)
356 {
357 evw_init (&sigev, sigcb);
358 siginit ();
359 }
360
361 return ev_method;
362} 1338}
363 1339
364/*****************************************************************************/ 1340void inline_speed
365 1341call_pending (EV_P)
366void ev_prefork (void)
367{ 1342{
368 /* nop */
369}
370
371void ev_postfork_parent (void)
372{
373 /* nop */
374}
375
376void ev_postfork_child (void)
377{
378#if HAVE_EPOLL
379 if (ev_method == EVMETHOD_EPOLL)
380 epoll_postfork_child ();
381#endif
382
383 evio_stop (&sigev);
384 close (sigpipe [0]);
385 close (sigpipe [1]);
386 pipe (sigpipe);
387 siginit ();
388}
389
390/*****************************************************************************/
391
392static void
393fd_reify (void)
394{
395 int i; 1343 int pri;
396 1344
397 for (i = 0; i < fdchangecnt; ++i) 1345 for (pri = NUMPRI; pri--; )
1346 while (pendingcnt [pri])
398 { 1347 {
399 int fd = fdchanges [i]; 1348 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
400 ANFD *anfd = anfds + fd;
401 struct ev_io *w;
402 1349
403 int wev = 0; 1350 if (expect_true (p->w))
404
405 for (w = anfd->head; w; w = w->next)
406 wev |= w->events;
407
408 if (anfd->wev != wev)
409 { 1351 {
410 method_modify (fd, anfd->wev, wev); 1352 /*assert (("non-pending watcher on pending list", p->w->pending));*/
411 anfd->wev = wev;
412 }
413 }
414 1353
415 fdchangecnt = 0;
416}
417
418static void
419call_pending ()
420{
421 while (pendingcnt)
422 {
423 ANPENDING *p = pendings + --pendingcnt;
424
425 if (p->w)
426 {
427 p->w->pending = 0; 1354 p->w->pending = 0;
428 p->w->cb (p->w, p->events); 1355 EV_CB_INVOKE (p->w, p->events);
429 } 1356 }
430 } 1357 }
431} 1358}
432 1359
433static void 1360void inline_size
434timers_reify () 1361timers_reify (EV_P)
435{ 1362{
436 while (timercnt && timers [0]->at <= now) 1363 while (timercnt && ((WT)timers [0])->at <= mn_now)
437 { 1364 {
438 struct ev_timer *w = timers [0]; 1365 ev_timer *w = (ev_timer *)timers [0];
439 1366
440 event ((W)w, EV_TIMEOUT); 1367 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
441 1368
442 /* first reschedule or stop timer */ 1369 /* first reschedule or stop timer */
443 if (w->repeat) 1370 if (w->repeat)
444 { 1371 {
1372 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1373
445 w->at = now + w->repeat; 1374 ((WT)w)->at += w->repeat;
446 assert (("timer timeout in the past, negative repeat?", w->at > now)); 1375 if (((WT)w)->at < mn_now)
1376 ((WT)w)->at = mn_now;
1377
447 downheap ((WT *)timers, timercnt, 0); 1378 downheap (timers, timercnt, 0);
448 } 1379 }
449 else 1380 else
450 evtimer_stop (w); /* nonrepeating: stop timer */ 1381 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
451 }
452}
453 1382
454static void 1383 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1384 }
1385}
1386
1387#if EV_PERIODIC_ENABLE
1388void inline_size
455periodics_reify () 1389periodics_reify (EV_P)
456{ 1390{
457 while (periodiccnt && periodics [0]->at <= ev_now) 1391 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
458 { 1392 {
459 struct ev_periodic *w = periodics [0]; 1393 ev_periodic *w = (ev_periodic *)periodics [0];
1394
1395 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
460 1396
461 /* first reschedule or stop timer */ 1397 /* first reschedule or stop timer */
462 if (w->interval) 1398 if (w->reschedule_cb)
463 { 1399 {
464 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1400 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
465 assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); 1401 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
466 downheap ((WT *)periodics, periodiccnt, 0); 1402 downheap (periodics, periodiccnt, 0);
1403 }
1404 else if (w->interval)
1405 {
1406 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1407 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1408 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1409 downheap (periodics, periodiccnt, 0);
467 } 1410 }
468 else 1411 else
469 evperiodic_stop (w); /* nonrepeating: stop timer */ 1412 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
470 1413
471 event ((W)w, EV_TIMEOUT); 1414 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
472 } 1415 }
473} 1416}
474 1417
475static void 1418static void noinline
476periodics_reschedule (ev_tstamp diff) 1419periodics_reschedule (EV_P)
477{ 1420{
478 int i; 1421 int i;
479 1422
480 /* adjust periodics after time jump */ 1423 /* adjust periodics after time jump */
481 for (i = 0; i < periodiccnt; ++i) 1424 for (i = 0; i < periodiccnt; ++i)
482 { 1425 {
483 struct ev_periodic *w = periodics [i]; 1426 ev_periodic *w = (ev_periodic *)periodics [i];
484 1427
1428 if (w->reschedule_cb)
1429 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
485 if (w->interval) 1430 else if (w->interval)
1431 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1432 }
1433
1434 /* now rebuild the heap */
1435 for (i = periodiccnt >> 1; i--; )
1436 downheap (periodics, periodiccnt, i);
1437}
1438#endif
1439
1440#if EV_IDLE_ENABLE
1441void inline_size
1442idle_reify (EV_P)
1443{
1444 if (expect_false (idleall))
1445 {
1446 int pri;
1447
1448 for (pri = NUMPRI; pri--; )
486 { 1449 {
487 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1450 if (pendingcnt [pri])
1451 break;
488 1452
489 if (fabs (diff) >= 1e-4) 1453 if (idlecnt [pri])
490 { 1454 {
491 evperiodic_stop (w); 1455 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
492 evperiodic_start (w); 1456 break;
493
494 i = 0; /* restart loop, inefficient, but time jumps should be rare */
495 } 1457 }
496 } 1458 }
497 } 1459 }
498} 1460}
1461#endif
499 1462
500static void 1463void inline_speed
501time_update () 1464time_update (EV_P_ ev_tstamp max_block)
502{ 1465{
503 int i; 1466 int i;
504 1467
505 ev_now = ev_time (); 1468#if EV_USE_MONOTONIC
506
507 if (have_monotonic) 1469 if (expect_true (have_monotonic))
508 { 1470 {
509 ev_tstamp odiff = diff; 1471 ev_tstamp odiff = rtmn_diff;
510 1472
511 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1473 mn_now = get_clock ();
1474
1475 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1476 /* interpolate in the meantime */
1477 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
512 { 1478 {
513 now = get_clock (); 1479 ev_rt_now = rtmn_diff + mn_now;
1480 return;
1481 }
1482
1483 now_floor = mn_now;
1484 ev_rt_now = ev_time ();
1485
1486 /* loop a few times, before making important decisions.
1487 * on the choice of "4": one iteration isn't enough,
1488 * in case we get preempted during the calls to
1489 * ev_time and get_clock. a second call is almost guaranteed
1490 * to succeed in that case, though. and looping a few more times
1491 * doesn't hurt either as we only do this on time-jumps or
1492 * in the unlikely event of having been preempted here.
1493 */
1494 for (i = 4; --i; )
1495 {
514 diff = ev_now - now; 1496 rtmn_diff = ev_rt_now - mn_now;
515 1497
516 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1498 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
517 return; /* all is well */ 1499 return; /* all is well */
518 1500
519 ev_now = ev_time (); 1501 ev_rt_now = ev_time ();
1502 mn_now = get_clock ();
1503 now_floor = mn_now;
520 } 1504 }
521 1505
1506# if EV_PERIODIC_ENABLE
522 periodics_reschedule (diff - odiff); 1507 periodics_reschedule (EV_A);
1508# endif
523 /* no timer adjustment, as the monotonic clock doesn't jump */ 1509 /* no timer adjustment, as the monotonic clock doesn't jump */
1510 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
524 } 1511 }
525 else 1512 else
1513#endif
526 { 1514 {
527 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1515 ev_rt_now = ev_time ();
1516
1517 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
528 { 1518 {
1519#if EV_PERIODIC_ENABLE
529 periodics_reschedule (ev_now - now); 1520 periodics_reschedule (EV_A);
530 1521#endif
531 /* adjust timers. this is easy, as the offset is the same for all */ 1522 /* adjust timers. this is easy, as the offset is the same for all of them */
532 for (i = 0; i < timercnt; ++i) 1523 for (i = 0; i < timercnt; ++i)
533 timers [i]->at += diff; 1524 ((WT)timers [i])->at += ev_rt_now - mn_now;
534 } 1525 }
535 1526
536 now = ev_now; 1527 mn_now = ev_rt_now;
537 }
538}
539
540int ev_loop_done;
541
542void ev_loop (int flags)
543{
544 double block;
545 ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;
546
547 if (checkcnt)
548 { 1528 }
549 queue_events ((W *)checks, checkcnt, EV_CHECK); 1529}
550 call_pending (); 1530
551 } 1531void
1532ev_ref (EV_P)
1533{
1534 ++activecnt;
1535}
1536
1537void
1538ev_unref (EV_P)
1539{
1540 --activecnt;
1541}
1542
1543static int loop_done;
1544
1545void
1546ev_loop (EV_P_ int flags)
1547{
1548 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1549 ? EVUNLOOP_ONE
1550 : EVUNLOOP_CANCEL;
1551
1552 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
552 1553
553 do 1554 do
554 { 1555 {
1556#ifndef _WIN32
1557 if (expect_false (curpid)) /* penalise the forking check even more */
1558 if (expect_false (getpid () != curpid))
1559 {
1560 curpid = getpid ();
1561 postfork = 1;
1562 }
1563#endif
1564
1565#if EV_FORK_ENABLE
1566 /* we might have forked, so queue fork handlers */
1567 if (expect_false (postfork))
1568 if (forkcnt)
1569 {
1570 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1571 call_pending (EV_A);
1572 }
1573#endif
1574
1575 /* queue prepare watchers (and execute them) */
1576 if (expect_false (preparecnt))
1577 {
1578 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1579 call_pending (EV_A);
1580 }
1581
1582 if (expect_false (!activecnt))
1583 break;
1584
1585 /* we might have forked, so reify kernel state if necessary */
1586 if (expect_false (postfork))
1587 loop_fork (EV_A);
1588
555 /* update fd-related kernel structures */ 1589 /* update fd-related kernel structures */
556 fd_reify (); 1590 fd_reify (EV_A);
557 1591
558 /* calculate blocking time */ 1592 /* calculate blocking time */
1593 {
1594 ev_tstamp waittime = 0.;
1595 ev_tstamp sleeptime = 0.;
559 1596
560 /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ 1597 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
561 ev_now = ev_time ();
562
563 if (flags & EVLOOP_NONBLOCK || idlecnt)
564 block = 0.;
565 else
566 { 1598 {
1599 /* update time to cancel out callback processing overhead */
1600 time_update (EV_A_ 1e100);
1601
567 block = MAX_BLOCKTIME; 1602 waittime = MAX_BLOCKTIME;
568 1603
569 if (timercnt) 1604 if (timercnt)
570 { 1605 {
571 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1606 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
572 if (block > to) block = to; 1607 if (waittime > to) waittime = to;
573 } 1608 }
574 1609
1610#if EV_PERIODIC_ENABLE
575 if (periodiccnt) 1611 if (periodiccnt)
576 { 1612 {
577 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1613 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
578 if (block > to) block = to; 1614 if (waittime > to) waittime = to;
579 } 1615 }
1616#endif
580 1617
581 if (block < 0.) block = 0.; 1618 if (expect_false (waittime < timeout_blocktime))
1619 waittime = timeout_blocktime;
1620
1621 sleeptime = waittime - backend_fudge;
1622
1623 if (expect_true (sleeptime > io_blocktime))
1624 sleeptime = io_blocktime;
1625
1626 if (sleeptime)
1627 {
1628 ev_sleep (sleeptime);
1629 waittime -= sleeptime;
1630 }
582 } 1631 }
583 1632
584 method_poll (block); 1633 ++loop_count;
1634 backend_poll (EV_A_ waittime);
585 1635
586 /* update ev_now, do magic */ 1636 /* update ev_rt_now, do magic */
587 time_update (); 1637 time_update (EV_A_ waittime + sleeptime);
1638 }
588 1639
589 /* queue pending timers and reschedule them */ 1640 /* queue pending timers and reschedule them */
1641 timers_reify (EV_A); /* relative timers called last */
1642#if EV_PERIODIC_ENABLE
590 periodics_reify (); /* absolute timers first */ 1643 periodics_reify (EV_A); /* absolute timers called first */
591 timers_reify (); /* relative timers second */ 1644#endif
592 1645
1646#if EV_IDLE_ENABLE
593 /* queue idle watchers unless io or timers are pending */ 1647 /* queue idle watchers unless other events are pending */
594 if (!pendingcnt) 1648 idle_reify (EV_A);
595 queue_events ((W *)idles, idlecnt, EV_IDLE); 1649#endif
596 1650
597 /* queue check and possibly idle watchers */ 1651 /* queue check watchers, to be executed first */
1652 if (expect_false (checkcnt))
598 queue_events ((W *)checks, checkcnt, EV_CHECK); 1653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
599 1654
600 call_pending (); 1655 call_pending (EV_A);
601 }
602 while (!ev_loop_done);
603 1656
604 if (ev_loop_done != 2) 1657 }
1658 while (expect_true (activecnt && !loop_done));
1659
1660 if (loop_done == EVUNLOOP_ONE)
1661 loop_done = EVUNLOOP_CANCEL;
1662}
1663
1664void
1665ev_unloop (EV_P_ int how)
1666{
605 ev_loop_done = 0; 1667 loop_done = how;
606} 1668}
607 1669
608/*****************************************************************************/ 1670/*****************************************************************************/
609 1671
610static void 1672void inline_size
611wlist_add (WL *head, WL elem) 1673wlist_add (WL *head, WL elem)
612{ 1674{
613 elem->next = *head; 1675 elem->next = *head;
614 *head = elem; 1676 *head = elem;
615} 1677}
616 1678
617static void 1679void inline_size
618wlist_del (WL *head, WL elem) 1680wlist_del (WL *head, WL elem)
619{ 1681{
620 while (*head) 1682 while (*head)
621 { 1683 {
622 if (*head == elem) 1684 if (*head == elem)
… …
627 1689
628 head = &(*head)->next; 1690 head = &(*head)->next;
629 } 1691 }
630} 1692}
631 1693
632static void 1694void inline_speed
633ev_clear (W w) 1695clear_pending (EV_P_ W w)
634{ 1696{
635 if (w->pending) 1697 if (w->pending)
636 { 1698 {
637 pendings [w->pending - 1].w = 0; 1699 pendings [ABSPRI (w)][w->pending - 1].w = 0;
638 w->pending = 0; 1700 w->pending = 0;
639 } 1701 }
640} 1702}
641 1703
642static void 1704int
1705ev_clear_pending (EV_P_ void *w)
1706{
1707 W w_ = (W)w;
1708 int pending = w_->pending;
1709
1710 if (expect_true (pending))
1711 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1713 w_->pending = 0;
1714 p->w = 0;
1715 return p->events;
1716 }
1717 else
1718 return 0;
1719}
1720
1721void inline_size
1722pri_adjust (EV_P_ W w)
1723{
1724 int pri = w->priority;
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri;
1728}
1729
1730void inline_speed
643ev_start (W w, int active) 1731ev_start (EV_P_ W w, int active)
644{ 1732{
1733 pri_adjust (EV_A_ w);
645 w->active = active; 1734 w->active = active;
1735 ev_ref (EV_A);
646} 1736}
647 1737
648static void 1738void inline_size
649ev_stop (W w) 1739ev_stop (EV_P_ W w)
650{ 1740{
1741 ev_unref (EV_A);
651 w->active = 0; 1742 w->active = 0;
652} 1743}
653 1744
654/*****************************************************************************/ 1745/*****************************************************************************/
655 1746
656void 1747void noinline
657evio_start (struct ev_io *w) 1748ev_io_start (EV_P_ ev_io *w)
658{ 1749{
659 if (ev_is_active (w))
660 return;
661
662 int fd = w->fd; 1750 int fd = w->fd;
663 1751
1752 if (expect_false (ev_is_active (w)))
1753 return;
1754
1755 assert (("ev_io_start called with negative fd", fd >= 0));
1756
664 ev_start ((W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
665 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
666 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1759 wlist_add (&anfds[fd].head, (WL)w);
667 1760
668 ++fdchangecnt; 1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
669 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 1762 w->events &= ~EV_IOFDSET;
670 fdchanges [fdchangecnt - 1] = fd;
671} 1763}
672 1764
673void 1765void noinline
674evio_stop (struct ev_io *w) 1766ev_io_stop (EV_P_ ev_io *w)
675{ 1767{
676 ev_clear ((W)w); 1768 clear_pending (EV_A_ (W)w);
677 if (!ev_is_active (w)) 1769 if (expect_false (!ev_is_active (w)))
678 return; 1770 return;
679 1771
1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1773
680 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1774 wlist_del (&anfds[w->fd].head, (WL)w);
681 ev_stop ((W)w); 1775 ev_stop (EV_A_ (W)w);
682 1776
683 ++fdchangecnt; 1777 fd_change (EV_A_ w->fd, 1);
684 array_needsize (fdchanges, fdchangemax, fdchangecnt, );
685 fdchanges [fdchangecnt - 1] = w->fd;
686} 1778}
687 1779
688void 1780void noinline
689evtimer_start (struct ev_timer *w) 1781ev_timer_start (EV_P_ ev_timer *w)
690{ 1782{
691 if (ev_is_active (w)) 1783 if (expect_false (ev_is_active (w)))
692 return; 1784 return;
693 1785
694 w->at += now; 1786 ((WT)w)->at += mn_now;
695 1787
696 assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); 1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
697 1789
698 ev_start ((W)w, ++timercnt); 1790 ev_start (EV_A_ (W)w, ++timercnt);
699 array_needsize (timers, timermax, timercnt, ); 1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
700 timers [timercnt - 1] = w; 1792 timers [timercnt - 1] = (WT)w;
701 upheap ((WT *)timers, timercnt - 1); 1793 upheap (timers, timercnt - 1);
702}
703 1794
704void 1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1796}
1797
1798void noinline
705evtimer_stop (struct ev_timer *w) 1799ev_timer_stop (EV_P_ ev_timer *w)
706{ 1800{
707 ev_clear ((W)w); 1801 clear_pending (EV_A_ (W)w);
708 if (!ev_is_active (w)) 1802 if (expect_false (!ev_is_active (w)))
709 return; 1803 return;
710 1804
711 if (w->active < timercnt--) 1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1806
1807 {
1808 int active = ((W)w)->active;
1809
1810 if (expect_true (--active < --timercnt))
712 { 1811 {
713 timers [w->active - 1] = timers [timercnt]; 1812 timers [active] = timers [timercnt];
714 downheap ((WT *)timers, timercnt, w->active - 1); 1813 adjustheap (timers, timercnt, active);
715 } 1814 }
1815 }
716 1816
717 w->at = w->repeat; 1817 ((WT)w)->at -= mn_now;
718 1818
719 ev_stop ((W)w); 1819 ev_stop (EV_A_ (W)w);
720} 1820}
721 1821
722void 1822void noinline
723evtimer_again (struct ev_timer *w) 1823ev_timer_again (EV_P_ ev_timer *w)
724{ 1824{
725 if (ev_is_active (w)) 1825 if (ev_is_active (w))
726 { 1826 {
727 if (w->repeat) 1827 if (w->repeat)
728 { 1828 {
729 w->at = now + w->repeat; 1829 ((WT)w)->at = mn_now + w->repeat;
730 downheap ((WT *)timers, timercnt, w->active - 1); 1830 adjustheap (timers, timercnt, ((W)w)->active - 1);
731 } 1831 }
732 else 1832 else
733 evtimer_stop (w); 1833 ev_timer_stop (EV_A_ w);
734 } 1834 }
735 else if (w->repeat) 1835 else if (w->repeat)
1836 {
1837 w->at = w->repeat;
736 evtimer_start (w); 1838 ev_timer_start (EV_A_ w);
1839 }
737} 1840}
738 1841
739void 1842#if EV_PERIODIC_ENABLE
1843void noinline
740evperiodic_start (struct ev_periodic *w) 1844ev_periodic_start (EV_P_ ev_periodic *w)
741{ 1845{
742 if (ev_is_active (w)) 1846 if (expect_false (ev_is_active (w)))
743 return; 1847 return;
744 1848
745 assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); 1849 if (w->reschedule_cb)
746 1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1851 else if (w->interval)
1852 {
1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
747 /* this formula differs from the one in periodic_reify because we do not always round up */ 1854 /* this formula differs from the one in periodic_reify because we do not always round up */
748 if (w->interval)
749 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1856 }
1857 else
1858 ((WT)w)->at = w->offset;
750 1859
751 ev_start ((W)w, ++periodiccnt); 1860 ev_start (EV_A_ (W)w, ++periodiccnt);
752 array_needsize (periodics, periodicmax, periodiccnt, ); 1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
753 periodics [periodiccnt - 1] = w; 1862 periodics [periodiccnt - 1] = (WT)w;
754 upheap ((WT *)periodics, periodiccnt - 1); 1863 upheap (periodics, periodiccnt - 1);
755}
756 1864
757void 1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1866}
1867
1868void noinline
758evperiodic_stop (struct ev_periodic *w) 1869ev_periodic_stop (EV_P_ ev_periodic *w)
759{ 1870{
760 ev_clear ((W)w); 1871 clear_pending (EV_A_ (W)w);
761 if (!ev_is_active (w)) 1872 if (expect_false (!ev_is_active (w)))
762 return; 1873 return;
763 1874
764 if (w->active < periodiccnt--) 1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1876
1877 {
1878 int active = ((W)w)->active;
1879
1880 if (expect_true (--active < --periodiccnt))
765 { 1881 {
766 periodics [w->active - 1] = periodics [periodiccnt]; 1882 periodics [active] = periodics [periodiccnt];
767 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1883 adjustheap (periodics, periodiccnt, active);
768 } 1884 }
1885 }
769 1886
770 ev_stop ((W)w); 1887 ev_stop (EV_A_ (W)w);
771} 1888}
772 1889
773void 1890void noinline
1891ev_periodic_again (EV_P_ ev_periodic *w)
1892{
1893 /* TODO: use adjustheap and recalculation */
1894 ev_periodic_stop (EV_A_ w);
1895 ev_periodic_start (EV_A_ w);
1896}
1897#endif
1898
1899#ifndef SA_RESTART
1900# define SA_RESTART 0
1901#endif
1902
1903void noinline
774evsignal_start (struct ev_signal *w) 1904ev_signal_start (EV_P_ ev_signal *w)
775{ 1905{
1906#if EV_MULTIPLICITY
1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1908#endif
776 if (ev_is_active (w)) 1909 if (expect_false (ev_is_active (w)))
777 return; 1910 return;
778 1911
779 ev_start ((W)w, 1); 1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1913
1914 evpipe_init (EV_A);
1915
1916 {
1917#ifndef _WIN32
1918 sigset_t full, prev;
1919 sigfillset (&full);
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922
780 array_needsize (signals, signalmax, w->signum, signals_init); 1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1924
1925#ifndef _WIN32
1926 sigprocmask (SIG_SETMASK, &prev, 0);
1927#endif
1928 }
1929
1930 ev_start (EV_A_ (W)w, 1);
781 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1931 wlist_add (&signals [w->signum - 1].head, (WL)w);
782 1932
783 if (!w->next) 1933 if (!((WL)w)->next)
784 { 1934 {
1935#if _WIN32
1936 signal (w->signum, sighandler);
1937#else
785 struct sigaction sa; 1938 struct sigaction sa;
786 sa.sa_handler = sighandler; 1939 sa.sa_handler = sighandler;
787 sigfillset (&sa.sa_mask); 1940 sigfillset (&sa.sa_mask);
788 sa.sa_flags = 0; 1941 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
789 sigaction (w->signum, &sa, 0); 1942 sigaction (w->signum, &sa, 0);
1943#endif
790 } 1944 }
791} 1945}
792 1946
793void 1947void noinline
794evsignal_stop (struct ev_signal *w) 1948ev_signal_stop (EV_P_ ev_signal *w)
795{ 1949{
796 ev_clear ((W)w); 1950 clear_pending (EV_A_ (W)w);
797 if (!ev_is_active (w)) 1951 if (expect_false (!ev_is_active (w)))
798 return; 1952 return;
799 1953
800 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1954 wlist_del (&signals [w->signum - 1].head, (WL)w);
801 ev_stop ((W)w); 1955 ev_stop (EV_A_ (W)w);
802 1956
803 if (!signals [w->signum - 1].head) 1957 if (!signals [w->signum - 1].head)
804 signal (w->signum, SIG_DFL); 1958 signal (w->signum, SIG_DFL);
805} 1959}
806 1960
807void evidle_start (struct ev_idle *w) 1961void
1962ev_child_start (EV_P_ ev_child *w)
808{ 1963{
1964#if EV_MULTIPLICITY
1965 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1966#endif
809 if (ev_is_active (w)) 1967 if (expect_false (ev_is_active (w)))
810 return; 1968 return;
811 1969
812 ev_start ((W)w, ++idlecnt); 1970 ev_start (EV_A_ (W)w, 1);
813 array_needsize (idles, idlemax, idlecnt, ); 1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
814 idles [idlecnt - 1] = w;
815} 1972}
816 1973
817void evidle_stop (struct ev_idle *w) 1974void
1975ev_child_stop (EV_P_ ev_child *w)
818{ 1976{
819 ev_clear ((W)w); 1977 clear_pending (EV_A_ (W)w);
820 if (ev_is_active (w)) 1978 if (expect_false (!ev_is_active (w)))
821 return; 1979 return;
822 1980
823 idles [w->active - 1] = idles [--idlecnt]; 1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
824 ev_stop ((W)w); 1982 ev_stop (EV_A_ (W)w);
825} 1983}
826 1984
1985#if EV_STAT_ENABLE
1986
1987# ifdef _WIN32
1988# undef lstat
1989# define lstat(a,b) _stati64 (a,b)
1990# endif
1991
1992#define DEF_STAT_INTERVAL 5.0074891
1993#define MIN_STAT_INTERVAL 0.1074891
1994
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996
1997#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192
1999
2000static void noinline
2001infy_add (EV_P_ ev_stat *w)
2002{
2003 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2004
2005 if (w->wd < 0)
2006 {
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2008
2009 /* monitor some parent directory for speedup hints */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 {
2012 char path [4096];
2013 strcpy (path, w->path);
2014
2015 do
2016 {
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019
2020 char *pend = strrchr (path, '/');
2021
2022 if (!pend)
2023 break; /* whoops, no '/', complain to your admin */
2024
2025 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 }
2030 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033
2034 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2036}
2037
2038static void noinline
2039infy_del (EV_P_ ev_stat *w)
2040{
2041 int slot;
2042 int wd = w->wd;
2043
2044 if (wd < 0)
2045 return;
2046
2047 w->wd = -2;
2048 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2049 wlist_del (&fs_hash [slot].head, (WL)w);
2050
2051 /* remove this watcher, if others are watching it, they will rearm */
2052 inotify_rm_watch (fs_fd, wd);
2053}
2054
2055static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{
2058 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev);
2062 else
2063 {
2064 WL w_;
2065
2066 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2067 {
2068 ev_stat *w = (ev_stat *)w_;
2069 w_ = w_->next; /* lets us remove this watcher and all before it */
2070
2071 if (w->wd == wd || wd == -1)
2072 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 {
2075 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */
2077 }
2078
2079 stat_timer_cb (EV_A_ &w->timer, 0);
2080 }
2081 }
2082 }
2083}
2084
2085static void
2086infy_cb (EV_P_ ev_io *w, int revents)
2087{
2088 char buf [EV_INOTIFY_BUFSIZE];
2089 struct inotify_event *ev = (struct inotify_event *)buf;
2090 int ofs;
2091 int len = read (fs_fd, buf, sizeof (buf));
2092
2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2094 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2095}
2096
2097void inline_size
2098infy_init (EV_P)
2099{
2100 if (fs_fd != -2)
2101 return;
2102
2103 fs_fd = inotify_init ();
2104
2105 if (fs_fd >= 0)
2106 {
2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2108 ev_set_priority (&fs_w, EV_MAXPRI);
2109 ev_io_start (EV_A_ &fs_w);
2110 }
2111}
2112
2113void inline_size
2114infy_fork (EV_P)
2115{
2116 int slot;
2117
2118 if (fs_fd < 0)
2119 return;
2120
2121 close (fs_fd);
2122 fs_fd = inotify_init ();
2123
2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 {
2126 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0;
2128
2129 while (w_)
2130 {
2131 ev_stat *w = (ev_stat *)w_;
2132 w_ = w_->next; /* lets us add this watcher */
2133
2134 w->wd = -1;
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else
2139 ev_timer_start (EV_A_ &w->timer);
2140 }
2141
2142 }
2143}
2144
2145#endif
2146
2147void
2148ev_stat_stat (EV_P_ ev_stat *w)
2149{
2150 if (lstat (w->path, &w->attr) < 0)
2151 w->attr.st_nlink = 0;
2152 else if (!w->attr.st_nlink)
2153 w->attr.st_nlink = 1;
2154}
2155
2156static void noinline
2157stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2158{
2159 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2160
2161 /* we copy this here each the time so that */
2162 /* prev has the old value when the callback gets invoked */
2163 w->prev = w->attr;
2164 ev_stat_stat (EV_A_ w);
2165
2166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2167 if (
2168 w->prev.st_dev != w->attr.st_dev
2169 || w->prev.st_ino != w->attr.st_ino
2170 || w->prev.st_mode != w->attr.st_mode
2171 || w->prev.st_nlink != w->attr.st_nlink
2172 || w->prev.st_uid != w->attr.st_uid
2173 || w->prev.st_gid != w->attr.st_gid
2174 || w->prev.st_rdev != w->attr.st_rdev
2175 || w->prev.st_size != w->attr.st_size
2176 || w->prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime
2179 ) {
2180 #if EV_USE_INOTIFY
2181 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */
2184 #endif
2185
2186 ev_feed_event (EV_A_ w, EV_STAT);
2187 }
2188}
2189
2190void
2191ev_stat_start (EV_P_ ev_stat *w)
2192{
2193 if (expect_false (ev_is_active (w)))
2194 return;
2195
2196 /* since we use memcmp, we need to clear any padding data etc. */
2197 memset (&w->prev, 0, sizeof (ev_statdata));
2198 memset (&w->attr, 0, sizeof (ev_statdata));
2199
2200 ev_stat_stat (EV_A_ w);
2201
2202 if (w->interval < MIN_STAT_INTERVAL)
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204
2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2206 ev_set_priority (&w->timer, ev_priority (w));
2207
2208#if EV_USE_INOTIFY
2209 infy_init (EV_A);
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w);
2213 else
2214#endif
2215 ev_timer_start (EV_A_ &w->timer);
2216
2217 ev_start (EV_A_ (W)w, 1);
2218}
2219
2220void
2221ev_stat_stop (EV_P_ ev_stat *w)
2222{
2223 clear_pending (EV_A_ (W)w);
2224 if (expect_false (!ev_is_active (w)))
2225 return;
2226
2227#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w);
2229#endif
2230 ev_timer_stop (EV_A_ &w->timer);
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234#endif
2235
2236#if EV_IDLE_ENABLE
2237void
2238ev_idle_start (EV_P_ ev_idle *w)
2239{
2240 if (expect_false (ev_is_active (w)))
2241 return;
2242
2243 pri_adjust (EV_A_ (W)w);
2244
2245 {
2246 int active = ++idlecnt [ABSPRI (w)];
2247
2248 ++idleall;
2249 ev_start (EV_A_ (W)w, active);
2250
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w;
2253 }
2254}
2255
2256void
2257ev_idle_stop (EV_P_ ev_idle *w)
2258{
2259 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w)))
2261 return;
2262
2263 {
2264 int active = ((W)w)->active;
2265
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2268
2269 ev_stop (EV_A_ (W)w);
2270 --idleall;
2271 }
2272}
2273#endif
2274
2275void
2276ev_prepare_start (EV_P_ ev_prepare *w)
2277{
2278 if (expect_false (ev_is_active (w)))
2279 return;
2280
2281 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w;
2284}
2285
2286void
2287ev_prepare_stop (EV_P_ ev_prepare *w)
2288{
2289 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w)))
2291 return;
2292
2293 {
2294 int active = ((W)w)->active;
2295 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active;
2297 }
2298
2299 ev_stop (EV_A_ (W)w);
2300}
2301
2302void
827void evcheck_start (struct ev_check *w) 2303ev_check_start (EV_P_ ev_check *w)
828{ 2304{
829 if (ev_is_active (w)) 2305 if (expect_false (ev_is_active (w)))
830 return; 2306 return;
831 2307
832 ev_start ((W)w, ++checkcnt); 2308 ev_start (EV_A_ (W)w, ++checkcnt);
833 array_needsize (checks, checkmax, checkcnt, ); 2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
834 checks [checkcnt - 1] = w; 2310 checks [checkcnt - 1] = w;
835} 2311}
836 2312
2313void
837void evcheck_stop (struct ev_check *w) 2314ev_check_stop (EV_P_ ev_check *w)
838{ 2315{
839 ev_clear ((W)w); 2316 clear_pending (EV_A_ (W)w);
840 if (ev_is_active (w)) 2317 if (expect_false (!ev_is_active (w)))
841 return; 2318 return;
842 2319
2320 {
2321 int active = ((W)w)->active;
843 checks [w->active - 1] = checks [--checkcnt]; 2322 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active;
2324 }
2325
844 ev_stop ((W)w); 2326 ev_stop (EV_A_ (W)w);
845} 2327}
2328
2329#if EV_EMBED_ENABLE
2330void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w)
2332{
2333 ev_loop (w->other, EVLOOP_NONBLOCK);
2334}
2335
2336static void
2337embed_io_cb (EV_P_ ev_io *io, int revents)
2338{
2339 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2340
2341 if (ev_cb (w))
2342 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2343 else
2344 ev_loop (w->other, EVLOOP_NONBLOCK);
2345}
2346
2347static void
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351
2352 {
2353 struct ev_loop *loop = w->other;
2354
2355 while (fdchangecnt)
2356 {
2357 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 }
2360 }
2361}
2362
2363#if 0
2364static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{
2367 ev_idle_stop (EV_A_ idle);
2368}
2369#endif
2370
2371void
2372ev_embed_start (EV_P_ ev_embed *w)
2373{
2374 if (expect_false (ev_is_active (w)))
2375 return;
2376
2377 {
2378 struct ev_loop *loop = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 }
2382
2383 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io);
2385
2386 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare);
2389
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391
2392 ev_start (EV_A_ (W)w, 1);
2393}
2394
2395void
2396ev_embed_stop (EV_P_ ev_embed *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare);
2404
2405 ev_stop (EV_A_ (W)w);
2406}
2407#endif
2408
2409#if EV_FORK_ENABLE
2410void
2411ev_fork_start (EV_P_ ev_fork *w)
2412{
2413 if (expect_false (ev_is_active (w)))
2414 return;
2415
2416 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w;
2419}
2420
2421void
2422ev_fork_stop (EV_P_ ev_fork *w)
2423{
2424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w)))
2426 return;
2427
2428 {
2429 int active = ((W)w)->active;
2430 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active;
2432 }
2433
2434 ev_stop (EV_A_ (W)w);
2435}
2436#endif
2437
2438#if EV_ASYNC_ENABLE
2439void
2440ev_async_start (EV_P_ ev_async *w)
2441{
2442 if (expect_false (ev_is_active (w)))
2443 return;
2444
2445 evpipe_init (EV_A);
2446
2447 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w;
2450}
2451
2452void
2453ev_async_stop (EV_P_ ev_async *w)
2454{
2455 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w)))
2457 return;
2458
2459 {
2460 int active = ((W)w)->active;
2461 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active;
2463 }
2464
2465 ev_stop (EV_A_ (W)w);
2466}
2467
2468void
2469ev_async_send (EV_P_ ev_async *w)
2470{
2471 w->sent = 1;
2472 evpipe_write (EV_A_ 0, 1);
2473}
2474#endif
846 2475
847/*****************************************************************************/ 2476/*****************************************************************************/
848 2477
849struct ev_once 2478struct ev_once
850{ 2479{
851 struct ev_io io; 2480 ev_io io;
852 struct ev_timer to; 2481 ev_timer to;
853 void (*cb)(int revents, void *arg); 2482 void (*cb)(int revents, void *arg);
854 void *arg; 2483 void *arg;
855}; 2484};
856 2485
857static void 2486static void
858once_cb (struct ev_once *once, int revents) 2487once_cb (EV_P_ struct ev_once *once, int revents)
859{ 2488{
860 void (*cb)(int revents, void *arg) = once->cb; 2489 void (*cb)(int revents, void *arg) = once->cb;
861 void *arg = once->arg; 2490 void *arg = once->arg;
862 2491
863 evio_stop (&once->io); 2492 ev_io_stop (EV_A_ &once->io);
864 evtimer_stop (&once->to); 2493 ev_timer_stop (EV_A_ &once->to);
865 free (once); 2494 ev_free (once);
866 2495
867 cb (revents, arg); 2496 cb (revents, arg);
868} 2497}
869 2498
870static void 2499static void
871once_cb_io (struct ev_io *w, int revents) 2500once_cb_io (EV_P_ ev_io *w, int revents)
872{ 2501{
873 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2502 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
874} 2503}
875 2504
876static void 2505static void
877once_cb_to (struct ev_timer *w, int revents) 2506once_cb_to (EV_P_ ev_timer *w, int revents)
878{ 2507{
879 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2508 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
880} 2509}
881 2510
882void 2511void
883ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2512ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
884{ 2513{
885 struct ev_once *once = malloc (sizeof (struct ev_once)); 2514 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
886 2515
887 if (!once) 2516 if (expect_false (!once))
888 cb (EV_ERROR, arg); 2517 {
889 else 2518 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2519 return;
890 { 2520 }
2521
891 once->cb = cb; 2522 once->cb = cb;
892 once->arg = arg; 2523 once->arg = arg;
893 2524
894 evw_init (&once->io, once_cb_io); 2525 ev_init (&once->io, once_cb_io);
895
896 if (fd >= 0) 2526 if (fd >= 0)
897 { 2527 {
898 evio_set (&once->io, fd, events); 2528 ev_io_set (&once->io, fd, events);
899 evio_start (&once->io); 2529 ev_io_start (EV_A_ &once->io);
900 } 2530 }
901 2531
902 evw_init (&once->to, once_cb_to); 2532 ev_init (&once->to, once_cb_to);
903
904 if (timeout >= 0.) 2533 if (timeout >= 0.)
905 { 2534 {
906 evtimer_set (&once->to, timeout, 0.); 2535 ev_timer_set (&once->to, timeout, 0.);
907 evtimer_start (&once->to); 2536 ev_timer_start (EV_A_ &once->to);
908 }
909 }
910}
911
912/*****************************************************************************/
913
914#if 0
915
916struct ev_io wio;
917
918static void
919sin_cb (struct ev_io *w, int revents)
920{
921 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
922}
923
924static void
925ocb (struct ev_timer *w, int revents)
926{
927 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
928 evtimer_stop (w);
929 evtimer_start (w);
930}
931
932static void
933scb (struct ev_signal *w, int revents)
934{
935 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
936 evio_stop (&wio);
937 evio_start (&wio);
938}
939
940static void
941gcb (struct ev_signal *w, int revents)
942{
943 fprintf (stderr, "generic %x\n", revents);
944
945}
946
947int main (void)
948{
949 ev_init (0);
950
951 evio_init (&wio, sin_cb, 0, EV_READ);
952 evio_start (&wio);
953
954 struct ev_timer t[10000];
955
956#if 0
957 int i;
958 for (i = 0; i < 10000; ++i)
959 { 2537 }
960 struct ev_timer *w = t + i;
961 evw_init (w, ocb, i);
962 evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
963 evtimer_start (w);
964 if (drand48 () < 0.5)
965 evtimer_stop (w);
966 }
967#endif
968
969 struct ev_timer t1;
970 evtimer_init (&t1, ocb, 5, 10);
971 evtimer_start (&t1);
972
973 struct ev_signal sig;
974 evsignal_init (&sig, scb, SIGQUIT);
975 evsignal_start (&sig);
976
977 struct ev_check cw;
978 evcheck_init (&cw, gcb);
979 evcheck_start (&cw);
980
981 struct ev_idle iw;
982 evidle_init (&iw, gcb);
983 evidle_start (&iw);
984
985 ev_loop (0);
986
987 return 0;
988} 2538}
989 2539
2540#if EV_MULTIPLICITY
2541 #include "ev_wrap.h"
990#endif 2542#endif
991 2543
2544#ifdef __cplusplus
2545}
2546#endif
992 2547
993
994

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