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Comparing libev/ev.c (file contents):
Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs.
Revision 1.203 by root, Fri Jan 18 11:31:02 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 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/types.h> 134#include <sys/types.h>
42#include <sys/wait.h>
43#include <sys/time.h>
44#include <time.h> 135#include <time.h>
45 136
46#ifndef HAVE_MONOTONIC 137#include <signal.h>
47# ifdef CLOCK_MONOTONIC 138
48# 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
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) */
66#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
67 261
68#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
69 272
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
70typedef struct ev_watcher *W; 289typedef ev_watcher *W;
71typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
72typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
73 292
74static 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 sig_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
75ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
76int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
77 399
78static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
79 401
80static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
81static void (*method_modify)(int fd, int oev, int nev);
82static void (*method_poll)(ev_tstamp timeout);
83 403
84/*****************************************************************************/ 404/*****************************************************************************/
85 405
86ev_tstamp 406ev_tstamp
87ev_time (void) 407ev_time (void)
88{ 408{
89#if HAVE_REALTIME 409#if EV_USE_REALTIME
90 struct timespec ts; 410 struct timespec ts;
91 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
92 return ts.tv_sec + ts.tv_nsec * 1e-9; 412 return ts.tv_sec + ts.tv_nsec * 1e-9;
93#else 413#else
94 struct timeval tv; 414 struct timeval tv;
95 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
96 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
97#endif 417#endif
98} 418}
99 419
100static ev_tstamp 420ev_tstamp inline_size
101get_clock (void) 421get_clock (void)
102{ 422{
103#if HAVE_MONOTONIC 423#if EV_USE_MONOTONIC
104 if (have_monotonic) 424 if (expect_true (have_monotonic))
105 { 425 {
106 struct timespec ts; 426 struct timespec ts;
107 clock_gettime (CLOCK_MONOTONIC, &ts); 427 clock_gettime (CLOCK_MONOTONIC, &ts);
108 return ts.tv_sec + ts.tv_nsec * 1e-9; 428 return ts.tv_sec + ts.tv_nsec * 1e-9;
109 } 429 }
110#endif 430#endif
111 431
112 return ev_time (); 432 return ev_time ();
113} 433}
114 434
115#define array_needsize(base,cur,cnt,init) \ 435#if EV_MULTIPLICITY
116 if ((cnt) > cur) \ 436ev_tstamp
117 { \ 437ev_now (EV_P)
118 int newcnt = cur; \ 438{
119 do \ 439 return ev_rt_now;
120 { \ 440}
121 newcnt = (newcnt << 1) | 4 & ~3; \ 441#endif
122 } \ 442
123 while ((cnt) > newcnt); \ 443void
124 \ 444ev_sleep (ev_tstamp delay)
125 base = realloc (base, sizeof (*base) * (newcnt)); \ 445{
126 init (base + cur, newcnt - cur); \ 446 if (delay > 0.)
127 cur = newcnt; \
128 } 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}
129 467
130/*****************************************************************************/ 468/*****************************************************************************/
131 469
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
132typedef struct 765typedef struct
133{ 766{
134 struct ev_io *head; 767 WL head;
135 unsigned char wev, rev; /* want, received event set */
136} ANFD;
137
138static ANFD *anfds;
139static int anfdmax;
140
141static int *fdchanges;
142static int fdchangemax, fdchangecnt;
143
144static void
145anfds_init (ANFD *base, int count)
146{
147 while (count--)
148 {
149 base->head = 0;
150 base->wev = base->rev = EV_NONE;
151 ++base;
152 }
153}
154
155typedef struct
156{
157 W w;
158 int events;
159} ANPENDING;
160
161static ANPENDING *pendings;
162static int pendingmax, pendingcnt;
163
164static void
165event (W w, int events)
166{
167 if (w->active)
168 {
169 w->pending = ++pendingcnt;
170 array_needsize (pendings, pendingmax, pendingcnt, );
171 pendings [pendingcnt - 1].w = w;
172 pendings [pendingcnt - 1].events = events;
173 }
174}
175
176static void
177fd_event (int fd, int events)
178{
179 ANFD *anfd = anfds + fd;
180 struct ev_io *w;
181
182 for (w = anfd->head; w; w = w->next)
183 {
184 int ev = w->events & events;
185
186 if (ev)
187 event ((W)w, ev);
188 }
189}
190
191static void
192queue_events (W *events, int eventcnt, int type)
193{
194 int i;
195
196 for (i = 0; i < eventcnt; ++i)
197 event (events [i], type);
198}
199
200/* called on EBADF to verify fds */
201static void
202fd_recheck (void)
203{
204 int fd;
205
206 for (fd = 0; fd < anfdmax; ++fd)
207 if (anfds [fd].wev)
208 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
209 while (anfds [fd].head)
210 {
211 event ((W)anfds [fd].head, EV_ERROR);
212 evio_stop (anfds [fd].head);
213 }
214}
215
216/*****************************************************************************/
217
218static struct ev_timer **timers;
219static int timermax, timercnt;
220
221static struct ev_periodic **periodics;
222static int periodicmax, periodiccnt;
223
224static void
225upheap (WT *timers, int k)
226{
227 WT w = timers [k];
228
229 while (k && timers [k >> 1]->at > w->at)
230 {
231 timers [k] = timers [k >> 1];
232 timers [k]->active = k + 1;
233 k >>= 1;
234 }
235
236 timers [k] = w;
237 timers [k]->active = k + 1;
238
239}
240
241static void
242downheap (WT *timers, int N, int k)
243{
244 WT w = timers [k];
245
246 while (k < (N >> 1))
247 {
248 int j = k << 1;
249
250 if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
251 ++j;
252
253 if (w->at <= timers [j]->at)
254 break;
255
256 timers [k] = timers [j];
257 timers [k]->active = k + 1;
258 k = j;
259 }
260
261 timers [k] = w;
262 timers [k]->active = k + 1;
263}
264
265/*****************************************************************************/
266
267typedef struct
268{
269 struct ev_signal *head;
270 sig_atomic_t gotsig; 768 sig_atomic_t volatile gotsig;
271} ANSIG; 769} ANSIG;
272 770
273static ANSIG *signals; 771static ANSIG *signals;
274static int signalmax; 772static int signalmax;
275 773
276static int sigpipe [2]; 774static int sigpipe [2];
277static sig_atomic_t gotsig; 775static sig_atomic_t volatile gotsig;
278static struct ev_io sigev; 776static ev_io sigev;
279 777
280static void 778void inline_size
281signals_init (ANSIG *base, int count) 779signals_init (ANSIG *base, int count)
282{ 780{
283 while (count--) 781 while (count--)
284 { 782 {
285 base->head = 0; 783 base->head = 0;
286 base->gotsig = 0; 784 base->gotsig = 0;
785
287 ++base; 786 ++base;
288 } 787 }
289} 788}
290 789
291static void 790static void
292sighandler (int signum) 791sighandler (int signum)
293{ 792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
294 signals [signum - 1].gotsig = 1; 797 signals [signum - 1].gotsig = 1;
295 798
296 if (!gotsig) 799 if (!gotsig)
297 { 800 {
801 int old_errno = errno;
298 gotsig = 1; 802 gotsig = 1;
299 write (sigpipe [1], &gotsig, 1); 803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
300 } 805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
301} 826}
302 827
303static void 828static void
304sigcb (struct ev_io *iow, int revents) 829sigcb (EV_P_ ev_io *iow, int revents)
305{ 830{
306 struct ev_signal *w;
307 int sig; 831 int signum;
308 832
833 read (sigpipe [0], &revents, 1);
309 gotsig = 0; 834 gotsig = 0;
310 read (sigpipe [0], &revents, 1);
311 835
312 for (sig = signalmax; sig--; ) 836 for (signum = signalmax; signum--; )
313 if (signals [sig].gotsig) 837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840
841void inline_speed
842fd_intern (int fd)
843{
844#ifdef _WIN32
845 int arg = 1;
846 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
847#else
848 fcntl (fd, F_SETFD, FD_CLOEXEC);
849 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif
851}
852
853static void noinline
854siginit (EV_P)
855{
856 fd_intern (sigpipe [0]);
857 fd_intern (sigpipe [1]);
858
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */
862}
863
864/*****************************************************************************/
865
866static WL childs [EV_PID_HASHSIZE];
867
868#ifndef _WIN32
869
870static ev_signal childev;
871
872void inline_speed
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
874{
875 ev_child *w;
876
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
878 if (w->pid == pid || !w->pid)
314 { 879 {
315 signals [sig].gotsig = 0; 880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
316 881 w->rpid = pid;
317 for (w = signals [sig].head; w; w = w->next) 882 w->rstatus = status;
318 event ((W)w, EV_SIGNAL); 883 ev_feed_event (EV_A_ (W)w, EV_CHILD);
319 } 884 }
320} 885}
321
322static void
323siginit (void)
324{
325 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
326 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
327
328 /* rather than sort out wether we really need nb, set it */
329 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
330 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
331
332 evio_set (&sigev, sigpipe [0], EV_READ);
333 evio_start (&sigev);
334}
335
336/*****************************************************************************/
337
338static struct ev_idle **idles;
339static int idlemax, idlecnt;
340
341static struct ev_prepare **prepares;
342static int preparemax, preparecnt;
343
344static struct ev_check **checks;
345static int checkmax, checkcnt;
346
347/*****************************************************************************/
348
349static struct ev_child *childs [PID_HASHSIZE];
350static struct ev_signal childev;
351 886
352#ifndef WCONTINUED 887#ifndef WCONTINUED
353# define WCONTINUED 0 888# define WCONTINUED 0
354#endif 889#endif
355 890
356static void 891static void
357childcb (struct ev_signal *sw, int revents) 892childcb (EV_P_ ev_signal *sw, int revents)
358{ 893{
359 struct ev_child *w;
360 int pid, status; 894 int pid, status;
361 895
896 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
362 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 897 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
363 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 898 if (!WCONTINUED
364 if (w->pid == pid || w->pid == -1) 899 || errno != EINVAL
365 { 900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
366 w->status = status; 901 return;
367 event ((W)w, EV_CHILD); 902
368 } 903 /* make sure we are called again until all childs have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906
907 child_reap (EV_A_ sw, pid, pid, status);
908 if (EV_PID_HASHSIZE > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
369} 910}
911
912#endif
370 913
371/*****************************************************************************/ 914/*****************************************************************************/
372 915
916#if EV_USE_PORT
917# include "ev_port.c"
918#endif
919#if EV_USE_KQUEUE
920# include "ev_kqueue.c"
921#endif
373#if HAVE_EPOLL 922#if EV_USE_EPOLL
374# include "ev_epoll.c" 923# include "ev_epoll.c"
375#endif 924#endif
925#if EV_USE_POLL
926# include "ev_poll.c"
927#endif
376#if HAVE_SELECT 928#if EV_USE_SELECT
377# include "ev_select.c" 929# include "ev_select.c"
378#endif 930#endif
379 931
380int 932int
381ev_version_major (void) 933ev_version_major (void)
… …
387ev_version_minor (void) 939ev_version_minor (void)
388{ 940{
389 return EV_VERSION_MINOR; 941 return EV_VERSION_MINOR;
390} 942}
391 943
392int ev_init (int flags) 944/* return true if we are running with elevated privileges and should ignore env variables */
945int inline_size
946enable_secure (void)
393{ 947{
394 if (!ev_method) 948#ifdef _WIN32
949 return 0;
950#else
951 return getuid () != geteuid ()
952 || getgid () != getegid ();
953#endif
954}
955
956unsigned int
957ev_supported_backends (void)
958{
959 unsigned int flags = 0;
960
961 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
962 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
963 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
964 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
965 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
966
967 return flags;
968}
969
970unsigned int
971ev_recommended_backends (void)
972{
973 unsigned int flags = ev_supported_backends ();
974
975#ifndef __NetBSD__
976 /* kqueue is borked on everything but netbsd apparently */
977 /* it usually doesn't work correctly on anything but sockets and pipes */
978 flags &= ~EVBACKEND_KQUEUE;
979#endif
980#ifdef __APPLE__
981 // flags &= ~EVBACKEND_KQUEUE; for documentation
982 flags &= ~EVBACKEND_POLL;
983#endif
984
985 return flags;
986}
987
988unsigned int
989ev_embeddable_backends (void)
990{
991 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
992
993 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
994 /* please fix it and tell me how to detect the fix */
995 flags &= ~EVBACKEND_EPOLL;
996
997 return flags;
998}
999
1000unsigned int
1001ev_backend (EV_P)
1002{
1003 return backend;
1004}
1005
1006unsigned int
1007ev_loop_count (EV_P)
1008{
1009 return loop_count;
1010}
1011
1012void
1013ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1014{
1015 io_blocktime = interval;
1016}
1017
1018void
1019ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1020{
1021 timeout_blocktime = interval;
1022}
1023
1024static void noinline
1025loop_init (EV_P_ unsigned int flags)
1026{
1027 if (!backend)
395 { 1028 {
396#if HAVE_MONOTONIC 1029#if EV_USE_MONOTONIC
397 { 1030 {
398 struct timespec ts; 1031 struct timespec ts;
399 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400 have_monotonic = 1; 1033 have_monotonic = 1;
401 } 1034 }
402#endif 1035#endif
403 1036
404 ev_now = ev_time (); 1037 ev_rt_now = ev_time ();
405 now = get_clock (); 1038 mn_now = get_clock ();
1039 now_floor = mn_now;
406 diff = ev_now - now; 1040 rtmn_diff = ev_rt_now - mn_now;
407 1041
1042 io_blocktime = 0.;
1043 timeout_blocktime = 0.;
1044
1045 /* pid check not overridable via env */
1046#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid ();
1049#endif
1050
1051 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS"));
1055
1056 if (!(flags & 0x0000ffffUL))
1057 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY
1062 fs_fd = -2;
1063#endif
1064
1065#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1070#endif
1071#if EV_USE_EPOLL
1072 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1073#endif
1074#if EV_USE_POLL
1075 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1076#endif
1077#if EV_USE_SELECT
1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1079#endif
1080
1081 ev_init (&sigev, sigcb);
1082 ev_set_priority (&sigev, EV_MAXPRI);
1083 }
1084}
1085
1086static void noinline
1087loop_destroy (EV_P)
1088{
1089 int i;
1090
1091#if EV_USE_INOTIFY
1092 if (fs_fd >= 0)
1093 close (fs_fd);
1094#endif
1095
1096 if (backend_fd >= 0)
1097 close (backend_fd);
1098
1099#if EV_USE_PORT
1100 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1101#endif
1102#if EV_USE_KQUEUE
1103 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1104#endif
1105#if EV_USE_EPOLL
1106 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1107#endif
1108#if EV_USE_POLL
1109 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1110#endif
1111#if EV_USE_SELECT
1112 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1113#endif
1114
1115 for (i = NUMPRI; i--; )
1116 {
1117 array_free (pending, [i]);
1118#if EV_IDLE_ENABLE
1119 array_free (idle, [i]);
1120#endif
1121 }
1122
1123 ev_free (anfds); anfdmax = 0;
1124
1125 /* have to use the microsoft-never-gets-it-right macro */
1126 array_free (fdchange, EMPTY);
1127 array_free (timer, EMPTY);
1128#if EV_PERIODIC_ENABLE
1129 array_free (periodic, EMPTY);
1130#endif
1131#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY);
1133#endif
1134 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY);
1136
1137 backend = 0;
1138}
1139
1140void inline_size infy_fork (EV_P);
1141
1142void inline_size
1143loop_fork (EV_P)
1144{
1145#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif
1148#if EV_USE_KQUEUE
1149 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1150#endif
1151#if EV_USE_EPOLL
1152 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1153#endif
1154#if EV_USE_INOTIFY
1155 infy_fork (EV_A);
1156#endif
1157
1158 if (ev_is_active (&sigev))
1159 {
1160 /* default loop */
1161
1162 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev);
1164 close (sigpipe [0]);
1165 close (sigpipe [1]);
1166
1167 while (pipe (sigpipe))
1168 syserr ("(libev) error creating pipe");
1169
1170 siginit (EV_A);
1171 sigcb (EV_A_ &sigev, EV_READ);
1172 }
1173
1174 postfork = 0;
1175}
1176
1177#if EV_MULTIPLICITY
1178struct ev_loop *
1179ev_loop_new (unsigned int flags)
1180{
1181 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1182
1183 memset (loop, 0, sizeof (struct ev_loop));
1184
1185 loop_init (EV_A_ flags);
1186
1187 if (ev_backend (EV_A))
1188 return loop;
1189
1190 return 0;
1191}
1192
1193void
1194ev_loop_destroy (EV_P)
1195{
1196 loop_destroy (EV_A);
1197 ev_free (loop);
1198}
1199
1200void
1201ev_loop_fork (EV_P)
1202{
1203 postfork = 1;
1204}
1205
1206#endif
1207
1208#if EV_MULTIPLICITY
1209struct ev_loop *
1210ev_default_loop_init (unsigned int flags)
1211#else
1212int
1213ev_default_loop (unsigned int flags)
1214#endif
1215{
1216 if (sigpipe [0] == sigpipe [1])
408 if (pipe (sigpipe)) 1217 if (pipe (sigpipe))
409 return 0; 1218 return 0;
410 1219
411 ev_method = EVMETHOD_NONE; 1220 if (!ev_default_loop_ptr)
412#if HAVE_EPOLL 1221 {
413 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1222#if EV_MULTIPLICITY
1223 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1224#else
1225 ev_default_loop_ptr = 1;
414#endif 1226#endif
415#if HAVE_SELECT
416 if (ev_method == EVMETHOD_NONE) select_init (flags);
417#endif
418 1227
419 if (ev_method) 1228 loop_init (EV_A_ flags);
1229
1230 if (ev_backend (EV_A))
420 { 1231 {
421 evw_init (&sigev, sigcb);
422 siginit (); 1232 siginit (EV_A);
423 1233
1234#ifndef _WIN32
424 evsignal_init (&childev, childcb, SIGCHLD); 1235 ev_signal_init (&childev, childcb, SIGCHLD);
1236 ev_set_priority (&childev, EV_MAXPRI);
425 evsignal_start (&childev); 1237 ev_signal_start (EV_A_ &childev);
1238 ev_unref (EV_A); /* child watcher should not keep loop alive */
1239#endif
426 } 1240 }
1241 else
1242 ev_default_loop_ptr = 0;
427 } 1243 }
428 1244
429 return ev_method; 1245 return ev_default_loop_ptr;
1246}
1247
1248void
1249ev_default_destroy (void)
1250{
1251#if EV_MULTIPLICITY
1252 struct ev_loop *loop = ev_default_loop_ptr;
1253#endif
1254
1255#ifndef _WIN32
1256 ev_ref (EV_A); /* child watcher */
1257 ev_signal_stop (EV_A_ &childev);
1258#endif
1259
1260 ev_ref (EV_A); /* signal watcher */
1261 ev_io_stop (EV_A_ &sigev);
1262
1263 close (sigpipe [0]); sigpipe [0] = 0;
1264 close (sigpipe [1]); sigpipe [1] = 0;
1265
1266 loop_destroy (EV_A);
1267}
1268
1269void
1270ev_default_fork (void)
1271{
1272#if EV_MULTIPLICITY
1273 struct ev_loop *loop = ev_default_loop_ptr;
1274#endif
1275
1276 if (backend)
1277 postfork = 1;
430} 1278}
431 1279
432/*****************************************************************************/ 1280/*****************************************************************************/
433 1281
434void 1282void
435ev_prefork (void) 1283ev_invoke (EV_P_ void *w, int revents)
436{ 1284{
437 /* nop */ 1285 EV_CB_INVOKE ((W)w, revents);
438} 1286}
439 1287
440void 1288void inline_speed
441ev_postfork_parent (void) 1289call_pending (EV_P)
442{ 1290{
443 /* nop */
444}
445
446void
447ev_postfork_child (void)
448{
449#if HAVE_EPOLL
450 if (ev_method == EVMETHOD_EPOLL)
451 epoll_postfork_child ();
452#endif
453
454 evio_stop (&sigev);
455 close (sigpipe [0]);
456 close (sigpipe [1]);
457 pipe (sigpipe);
458 siginit ();
459}
460
461/*****************************************************************************/
462
463static void
464fd_reify (void)
465{
466 int i; 1291 int pri;
467 1292
468 for (i = 0; i < fdchangecnt; ++i) 1293 for (pri = NUMPRI; pri--; )
1294 while (pendingcnt [pri])
469 { 1295 {
470 int fd = fdchanges [i]; 1296 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
471 ANFD *anfd = anfds + fd;
472 struct ev_io *w;
473 1297
474 int wev = 0; 1298 if (expect_true (p->w))
475
476 for (w = anfd->head; w; w = w->next)
477 wev |= w->events;
478
479 if (anfd->wev != wev)
480 { 1299 {
481 method_modify (fd, anfd->wev, wev); 1300 /*assert (("non-pending watcher on pending list", p->w->pending));*/
482 anfd->wev = wev;
483 }
484 }
485 1301
486 fdchangecnt = 0;
487}
488
489static void
490call_pending (void)
491{
492 while (pendingcnt)
493 {
494 ANPENDING *p = pendings + --pendingcnt;
495
496 if (p->w)
497 {
498 p->w->pending = 0; 1302 p->w->pending = 0;
499 p->w->cb (p->w, p->events); 1303 EV_CB_INVOKE (p->w, p->events);
500 } 1304 }
501 } 1305 }
502} 1306}
503 1307
504static void 1308void inline_size
505timers_reify (void) 1309timers_reify (EV_P)
506{ 1310{
507 while (timercnt && timers [0]->at <= now) 1311 while (timercnt && ((WT)timers [0])->at <= mn_now)
508 { 1312 {
509 struct ev_timer *w = timers [0]; 1313 ev_timer *w = (ev_timer *)timers [0];
510 1314
511 event ((W)w, EV_TIMEOUT); 1315 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
512 1316
513 /* first reschedule or stop timer */ 1317 /* first reschedule or stop timer */
514 if (w->repeat) 1318 if (w->repeat)
515 { 1319 {
1320 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1321
516 w->at = now + w->repeat; 1322 ((WT)w)->at += w->repeat;
517 assert (("timer timeout in the past, negative repeat?", w->at > now)); 1323 if (((WT)w)->at < mn_now)
1324 ((WT)w)->at = mn_now;
1325
518 downheap ((WT *)timers, timercnt, 0); 1326 downheap (timers, timercnt, 0);
519 } 1327 }
520 else 1328 else
521 evtimer_stop (w); /* nonrepeating: stop timer */ 1329 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522 }
523}
524 1330
525static void 1331 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1332 }
1333}
1334
1335#if EV_PERIODIC_ENABLE
1336void inline_size
526periodics_reify (void) 1337periodics_reify (EV_P)
527{ 1338{
528 while (periodiccnt && periodics [0]->at <= ev_now) 1339 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529 { 1340 {
530 struct ev_periodic *w = periodics [0]; 1341 ev_periodic *w = (ev_periodic *)periodics [0];
1342
1343 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
531 1344
532 /* first reschedule or stop timer */ 1345 /* first reschedule or stop timer */
533 if (w->interval) 1346 if (w->reschedule_cb)
534 { 1347 {
535 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1348 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
536 assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); 1349 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
537 downheap ((WT *)periodics, periodiccnt, 0); 1350 downheap (periodics, periodiccnt, 0);
1351 }
1352 else if (w->interval)
1353 {
1354 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1355 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1356 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1357 downheap (periodics, periodiccnt, 0);
538 } 1358 }
539 else 1359 else
540 evperiodic_stop (w); /* nonrepeating: stop timer */ 1360 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541 1361
542 event ((W)w, EV_TIMEOUT); 1362 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543 } 1363 }
544} 1364}
545 1365
546static void 1366static void noinline
547periodics_reschedule (ev_tstamp diff) 1367periodics_reschedule (EV_P)
548{ 1368{
549 int i; 1369 int i;
550 1370
551 /* adjust periodics after time jump */ 1371 /* adjust periodics after time jump */
552 for (i = 0; i < periodiccnt; ++i) 1372 for (i = 0; i < periodiccnt; ++i)
553 { 1373 {
554 struct ev_periodic *w = periodics [i]; 1374 ev_periodic *w = (ev_periodic *)periodics [i];
555 1375
1376 if (w->reschedule_cb)
1377 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556 if (w->interval) 1378 else if (w->interval)
1379 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1380 }
1381
1382 /* now rebuild the heap */
1383 for (i = periodiccnt >> 1; i--; )
1384 downheap (periodics, periodiccnt, i);
1385}
1386#endif
1387
1388#if EV_IDLE_ENABLE
1389void inline_size
1390idle_reify (EV_P)
1391{
1392 if (expect_false (idleall))
1393 {
1394 int pri;
1395
1396 for (pri = NUMPRI; pri--; )
557 { 1397 {
558 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1398 if (pendingcnt [pri])
1399 break;
559 1400
560 if (fabs (diff) >= 1e-4) 1401 if (idlecnt [pri])
561 { 1402 {
562 evperiodic_stop (w); 1403 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
563 evperiodic_start (w); 1404 break;
564
565 i = 0; /* restart loop, inefficient, but time jumps should be rare */
566 } 1405 }
567 } 1406 }
568 } 1407 }
569} 1408}
1409#endif
570 1410
571static void 1411void inline_speed
572time_update (void) 1412time_update (EV_P_ ev_tstamp max_block)
573{ 1413{
574 int i; 1414 int i;
575 1415
576 ev_now = ev_time (); 1416#if EV_USE_MONOTONIC
577
578 if (have_monotonic) 1417 if (expect_true (have_monotonic))
579 { 1418 {
580 ev_tstamp odiff = diff; 1419 ev_tstamp odiff = rtmn_diff;
581 1420
582 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1421 mn_now = get_clock ();
1422
1423 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1424 /* interpolate in the meantime */
1425 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
583 { 1426 {
584 now = get_clock (); 1427 ev_rt_now = rtmn_diff + mn_now;
1428 return;
1429 }
1430
1431 now_floor = mn_now;
1432 ev_rt_now = ev_time ();
1433
1434 /* loop a few times, before making important decisions.
1435 * on the choice of "4": one iteration isn't enough,
1436 * in case we get preempted during the calls to
1437 * ev_time and get_clock. a second call is almost guaranteed
1438 * to succeed in that case, though. and looping a few more times
1439 * doesn't hurt either as we only do this on time-jumps or
1440 * in the unlikely event of having been preempted here.
1441 */
1442 for (i = 4; --i; )
1443 {
585 diff = ev_now - now; 1444 rtmn_diff = ev_rt_now - mn_now;
586 1445
587 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1446 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
588 return; /* all is well */ 1447 return; /* all is well */
589 1448
590 ev_now = ev_time (); 1449 ev_rt_now = ev_time ();
1450 mn_now = get_clock ();
1451 now_floor = mn_now;
591 } 1452 }
592 1453
1454# if EV_PERIODIC_ENABLE
593 periodics_reschedule (diff - odiff); 1455 periodics_reschedule (EV_A);
1456# endif
594 /* no timer adjustment, as the monotonic clock doesn't jump */ 1457 /* no timer adjustment, as the monotonic clock doesn't jump */
1458 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
595 } 1459 }
596 else 1460 else
1461#endif
597 { 1462 {
598 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1463 ev_rt_now = ev_time ();
1464
1465 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
599 { 1466 {
1467#if EV_PERIODIC_ENABLE
600 periodics_reschedule (ev_now - now); 1468 periodics_reschedule (EV_A);
601 1469#endif
602 /* adjust timers. this is easy, as the offset is the same for all */ 1470 /* adjust timers. this is easy, as the offset is the same for all of them */
603 for (i = 0; i < timercnt; ++i) 1471 for (i = 0; i < timercnt; ++i)
604 timers [i]->at += diff; 1472 ((WT)timers [i])->at += ev_rt_now - mn_now;
605 } 1473 }
606 1474
607 now = ev_now; 1475 mn_now = ev_rt_now;
608 } 1476 }
609} 1477}
610 1478
611int ev_loop_done; 1479void
1480ev_ref (EV_P)
1481{
1482 ++activecnt;
1483}
612 1484
1485void
1486ev_unref (EV_P)
1487{
1488 --activecnt;
1489}
1490
1491static int loop_done;
1492
1493void
613void ev_loop (int flags) 1494ev_loop (EV_P_ int flags)
614{ 1495{
615 double block;
616 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1496 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1497 ? EVUNLOOP_ONE
1498 : EVUNLOOP_CANCEL;
1499
1500 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
617 1501
618 do 1502 do
619 { 1503 {
1504#ifndef _WIN32
1505 if (expect_false (curpid)) /* penalise the forking check even more */
1506 if (expect_false (getpid () != curpid))
1507 {
1508 curpid = getpid ();
1509 postfork = 1;
1510 }
1511#endif
1512
1513#if EV_FORK_ENABLE
1514 /* we might have forked, so queue fork handlers */
1515 if (expect_false (postfork))
1516 if (forkcnt)
1517 {
1518 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1519 call_pending (EV_A);
1520 }
1521#endif
1522
620 /* queue check watchers (and execute them) */ 1523 /* queue prepare watchers (and execute them) */
621 if (preparecnt) 1524 if (expect_false (preparecnt))
622 { 1525 {
623 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1526 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624 call_pending (); 1527 call_pending (EV_A);
625 } 1528 }
626 1529
1530 if (expect_false (!activecnt))
1531 break;
1532
1533 /* we might have forked, so reify kernel state if necessary */
1534 if (expect_false (postfork))
1535 loop_fork (EV_A);
1536
627 /* update fd-related kernel structures */ 1537 /* update fd-related kernel structures */
628 fd_reify (); 1538 fd_reify (EV_A);
629 1539
630 /* calculate blocking time */ 1540 /* calculate blocking time */
1541 {
1542 ev_tstamp waittime = 0.;
1543 ev_tstamp sleeptime = 0.;
631 1544
632 /* we only need this for !monotonic clockor timers, but as we basically 1545 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
633 always have timers, we just calculate it always */
634 ev_now = ev_time ();
635
636 if (flags & EVLOOP_NONBLOCK || idlecnt)
637 block = 0.;
638 else
639 { 1546 {
1547 /* update time to cancel out callback processing overhead */
1548 time_update (EV_A_ 1e100);
1549
640 block = MAX_BLOCKTIME; 1550 waittime = MAX_BLOCKTIME;
641 1551
642 if (timercnt) 1552 if (timercnt)
643 { 1553 {
644 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1554 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
645 if (block > to) block = to; 1555 if (waittime > to) waittime = to;
646 } 1556 }
647 1557
1558#if EV_PERIODIC_ENABLE
648 if (periodiccnt) 1559 if (periodiccnt)
649 { 1560 {
650 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1561 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
651 if (block > to) block = to; 1562 if (waittime > to) waittime = to;
652 } 1563 }
1564#endif
653 1565
654 if (block < 0.) block = 0.; 1566 if (expect_false (waittime < timeout_blocktime))
1567 waittime = timeout_blocktime;
1568
1569 sleeptime = waittime - backend_fudge;
1570
1571 if (expect_true (sleeptime > io_blocktime))
1572 sleeptime = io_blocktime;
1573
1574 if (sleeptime)
1575 {
1576 ev_sleep (sleeptime);
1577 waittime -= sleeptime;
1578 }
655 } 1579 }
656 1580
657 method_poll (block); 1581 ++loop_count;
1582 backend_poll (EV_A_ waittime);
658 1583
659 /* update ev_now, do magic */ 1584 /* update ev_rt_now, do magic */
660 time_update (); 1585 time_update (EV_A_ waittime + sleeptime);
1586 }
661 1587
662 /* queue pending timers and reschedule them */ 1588 /* queue pending timers and reschedule them */
663 timers_reify (); /* relative timers called last */ 1589 timers_reify (EV_A); /* relative timers called last */
1590#if EV_PERIODIC_ENABLE
664 periodics_reify (); /* absolute timers called first */ 1591 periodics_reify (EV_A); /* absolute timers called first */
1592#endif
665 1593
1594#if EV_IDLE_ENABLE
666 /* queue idle watchers unless io or timers are pending */ 1595 /* queue idle watchers unless other events are pending */
667 if (!pendingcnt) 1596 idle_reify (EV_A);
668 queue_events ((W *)idles, idlecnt, EV_IDLE); 1597#endif
669 1598
670 /* queue check watchers, to be executed first */ 1599 /* queue check watchers, to be executed first */
671 if (checkcnt) 1600 if (expect_false (checkcnt))
672 queue_events ((W *)checks, checkcnt, EV_CHECK); 1601 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673 1602
674 call_pending (); 1603 call_pending (EV_A);
675 }
676 while (!ev_loop_done);
677 1604
678 if (ev_loop_done != 2) 1605 }
1606 while (expect_true (activecnt && !loop_done));
1607
1608 if (loop_done == EVUNLOOP_ONE)
1609 loop_done = EVUNLOOP_CANCEL;
1610}
1611
1612void
1613ev_unloop (EV_P_ int how)
1614{
679 ev_loop_done = 0; 1615 loop_done = how;
680} 1616}
681 1617
682/*****************************************************************************/ 1618/*****************************************************************************/
683 1619
684static void 1620void inline_size
685wlist_add (WL *head, WL elem) 1621wlist_add (WL *head, WL elem)
686{ 1622{
687 elem->next = *head; 1623 elem->next = *head;
688 *head = elem; 1624 *head = elem;
689} 1625}
690 1626
691static void 1627void inline_size
692wlist_del (WL *head, WL elem) 1628wlist_del (WL *head, WL elem)
693{ 1629{
694 while (*head) 1630 while (*head)
695 { 1631 {
696 if (*head == elem) 1632 if (*head == elem)
… …
701 1637
702 head = &(*head)->next; 1638 head = &(*head)->next;
703 } 1639 }
704} 1640}
705 1641
706static void 1642void inline_speed
707ev_clear (W w) 1643clear_pending (EV_P_ W w)
708{ 1644{
709 if (w->pending) 1645 if (w->pending)
710 { 1646 {
711 pendings [w->pending - 1].w = 0; 1647 pendings [ABSPRI (w)][w->pending - 1].w = 0;
712 w->pending = 0; 1648 w->pending = 0;
713 } 1649 }
714} 1650}
715 1651
716static void 1652int
1653ev_clear_pending (EV_P_ void *w)
1654{
1655 W w_ = (W)w;
1656 int pending = w_->pending;
1657
1658 if (expect_true (pending))
1659 {
1660 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1661 w_->pending = 0;
1662 p->w = 0;
1663 return p->events;
1664 }
1665 else
1666 return 0;
1667}
1668
1669void inline_size
1670pri_adjust (EV_P_ W w)
1671{
1672 int pri = w->priority;
1673 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1674 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1675 w->priority = pri;
1676}
1677
1678void inline_speed
717ev_start (W w, int active) 1679ev_start (EV_P_ W w, int active)
718{ 1680{
1681 pri_adjust (EV_A_ w);
719 w->active = active; 1682 w->active = active;
1683 ev_ref (EV_A);
720} 1684}
721 1685
722static void 1686void inline_size
723ev_stop (W w) 1687ev_stop (EV_P_ W w)
724{ 1688{
1689 ev_unref (EV_A);
725 w->active = 0; 1690 w->active = 0;
726} 1691}
727 1692
728/*****************************************************************************/ 1693/*****************************************************************************/
729 1694
730void 1695void noinline
731evio_start (struct ev_io *w) 1696ev_io_start (EV_P_ ev_io *w)
732{ 1697{
733 if (ev_is_active (w))
734 return;
735
736 int fd = w->fd; 1698 int fd = w->fd;
737 1699
1700 if (expect_false (ev_is_active (w)))
1701 return;
1702
1703 assert (("ev_io_start called with negative fd", fd >= 0));
1704
738 ev_start ((W)w, 1); 1705 ev_start (EV_A_ (W)w, 1);
739 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1706 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1707 wlist_add (&anfds[fd].head, (WL)w);
741 1708
742 ++fdchangecnt; 1709 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
743 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 1710 w->events &= ~EV_IOFDSET;
744 fdchanges [fdchangecnt - 1] = fd;
745
746 if (w->fd == 9)
747 printf ("start %p:%x\n", w, w->events);//D
748} 1711}
749 1712
750void 1713void noinline
751evio_stop (struct ev_io *w) 1714ev_io_stop (EV_P_ ev_io *w)
752{ 1715{
753 if (w->fd == 9) 1716 clear_pending (EV_A_ (W)w);
754 printf ("stop %p:%x\n", w, w->events);//D
755 ev_clear ((W)w);
756 if (!ev_is_active (w)) 1717 if (expect_false (!ev_is_active (w)))
757 return; 1718 return;
758 1719
1720 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1721
759 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1722 wlist_del (&anfds[w->fd].head, (WL)w);
760 ev_stop ((W)w); 1723 ev_stop (EV_A_ (W)w);
761 1724
762 ++fdchangecnt; 1725 fd_change (EV_A_ w->fd, 1);
763 array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764 fdchanges [fdchangecnt - 1] = w->fd;
765} 1726}
766 1727
767void 1728void noinline
768evtimer_start (struct ev_timer *w) 1729ev_timer_start (EV_P_ ev_timer *w)
769{ 1730{
770 if (ev_is_active (w)) 1731 if (expect_false (ev_is_active (w)))
771 return; 1732 return;
772 1733
773 w->at += now; 1734 ((WT)w)->at += mn_now;
774 1735
775 assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); 1736 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776 1737
777 ev_start ((W)w, ++timercnt); 1738 ev_start (EV_A_ (W)w, ++timercnt);
778 array_needsize (timers, timermax, timercnt, ); 1739 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
779 timers [timercnt - 1] = w; 1740 timers [timercnt - 1] = (WT)w;
780 upheap ((WT *)timers, timercnt - 1); 1741 upheap (timers, timercnt - 1);
781}
782 1742
783void 1743 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1744}
1745
1746void noinline
784evtimer_stop (struct ev_timer *w) 1747ev_timer_stop (EV_P_ ev_timer *w)
785{ 1748{
786 ev_clear ((W)w); 1749 clear_pending (EV_A_ (W)w);
787 if (!ev_is_active (w)) 1750 if (expect_false (!ev_is_active (w)))
788 return; 1751 return;
789 1752
790 if (w->active < timercnt--) 1753 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1754
1755 {
1756 int active = ((W)w)->active;
1757
1758 if (expect_true (--active < --timercnt))
791 { 1759 {
792 timers [w->active - 1] = timers [timercnt]; 1760 timers [active] = timers [timercnt];
793 downheap ((WT *)timers, timercnt, w->active - 1); 1761 adjustheap (timers, timercnt, active);
794 } 1762 }
1763 }
795 1764
796 w->at = w->repeat; 1765 ((WT)w)->at -= mn_now;
797 1766
798 ev_stop ((W)w); 1767 ev_stop (EV_A_ (W)w);
799} 1768}
800 1769
801void 1770void noinline
802evtimer_again (struct ev_timer *w) 1771ev_timer_again (EV_P_ ev_timer *w)
803{ 1772{
804 if (ev_is_active (w)) 1773 if (ev_is_active (w))
805 { 1774 {
806 if (w->repeat) 1775 if (w->repeat)
807 { 1776 {
808 w->at = now + w->repeat; 1777 ((WT)w)->at = mn_now + w->repeat;
809 downheap ((WT *)timers, timercnt, w->active - 1); 1778 adjustheap (timers, timercnt, ((W)w)->active - 1);
810 } 1779 }
811 else 1780 else
812 evtimer_stop (w); 1781 ev_timer_stop (EV_A_ w);
813 } 1782 }
814 else if (w->repeat) 1783 else if (w->repeat)
1784 {
1785 w->at = w->repeat;
815 evtimer_start (w); 1786 ev_timer_start (EV_A_ w);
1787 }
816} 1788}
817 1789
818void 1790#if EV_PERIODIC_ENABLE
1791void noinline
819evperiodic_start (struct ev_periodic *w) 1792ev_periodic_start (EV_P_ ev_periodic *w)
820{ 1793{
821 if (ev_is_active (w)) 1794 if (expect_false (ev_is_active (w)))
822 return; 1795 return;
823 1796
824 assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); 1797 if (w->reschedule_cb)
825 1798 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1799 else if (w->interval)
1800 {
1801 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
826 /* this formula differs from the one in periodic_reify because we do not always round up */ 1802 /* this formula differs from the one in periodic_reify because we do not always round up */
827 if (w->interval)
828 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1803 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1804 }
1805 else
1806 ((WT)w)->at = w->offset;
829 1807
830 ev_start ((W)w, ++periodiccnt); 1808 ev_start (EV_A_ (W)w, ++periodiccnt);
831 array_needsize (periodics, periodicmax, periodiccnt, ); 1809 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
832 periodics [periodiccnt - 1] = w; 1810 periodics [periodiccnt - 1] = (WT)w;
833 upheap ((WT *)periodics, periodiccnt - 1); 1811 upheap (periodics, periodiccnt - 1);
834}
835 1812
836void 1813 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1814}
1815
1816void noinline
837evperiodic_stop (struct ev_periodic *w) 1817ev_periodic_stop (EV_P_ ev_periodic *w)
838{ 1818{
839 ev_clear ((W)w); 1819 clear_pending (EV_A_ (W)w);
840 if (!ev_is_active (w)) 1820 if (expect_false (!ev_is_active (w)))
841 return; 1821 return;
842 1822
843 if (w->active < periodiccnt--) 1823 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1824
1825 {
1826 int active = ((W)w)->active;
1827
1828 if (expect_true (--active < --periodiccnt))
844 { 1829 {
845 periodics [w->active - 1] = periodics [periodiccnt]; 1830 periodics [active] = periodics [periodiccnt];
846 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1831 adjustheap (periodics, periodiccnt, active);
847 } 1832 }
1833 }
848 1834
849 ev_stop ((W)w); 1835 ev_stop (EV_A_ (W)w);
850} 1836}
851 1837
852void 1838void noinline
1839ev_periodic_again (EV_P_ ev_periodic *w)
1840{
1841 /* TODO: use adjustheap and recalculation */
1842 ev_periodic_stop (EV_A_ w);
1843 ev_periodic_start (EV_A_ w);
1844}
1845#endif
1846
1847#ifndef SA_RESTART
1848# define SA_RESTART 0
1849#endif
1850
1851void noinline
853evsignal_start (struct ev_signal *w) 1852ev_signal_start (EV_P_ ev_signal *w)
854{ 1853{
1854#if EV_MULTIPLICITY
1855 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1856#endif
855 if (ev_is_active (w)) 1857 if (expect_false (ev_is_active (w)))
856 return; 1858 return;
857 1859
858 ev_start ((W)w, 1); 1860 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1861
1862 {
1863#ifndef _WIN32
1864 sigset_t full, prev;
1865 sigfillset (&full);
1866 sigprocmask (SIG_SETMASK, &full, &prev);
1867#endif
1868
859 array_needsize (signals, signalmax, w->signum, signals_init); 1869 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1870
1871#ifndef _WIN32
1872 sigprocmask (SIG_SETMASK, &prev, 0);
1873#endif
1874 }
1875
1876 ev_start (EV_A_ (W)w, 1);
860 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1877 wlist_add (&signals [w->signum - 1].head, (WL)w);
861 1878
862 if (!w->next) 1879 if (!((WL)w)->next)
863 { 1880 {
1881#if _WIN32
1882 signal (w->signum, sighandler);
1883#else
864 struct sigaction sa; 1884 struct sigaction sa;
865 sa.sa_handler = sighandler; 1885 sa.sa_handler = sighandler;
866 sigfillset (&sa.sa_mask); 1886 sigfillset (&sa.sa_mask);
867 sa.sa_flags = 0; 1887 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868 sigaction (w->signum, &sa, 0); 1888 sigaction (w->signum, &sa, 0);
1889#endif
869 } 1890 }
870} 1891}
871 1892
872void 1893void noinline
873evsignal_stop (struct ev_signal *w) 1894ev_signal_stop (EV_P_ ev_signal *w)
874{ 1895{
875 ev_clear ((W)w); 1896 clear_pending (EV_A_ (W)w);
876 if (!ev_is_active (w)) 1897 if (expect_false (!ev_is_active (w)))
877 return; 1898 return;
878 1899
879 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1900 wlist_del (&signals [w->signum - 1].head, (WL)w);
880 ev_stop ((W)w); 1901 ev_stop (EV_A_ (W)w);
881 1902
882 if (!signals [w->signum - 1].head) 1903 if (!signals [w->signum - 1].head)
883 signal (w->signum, SIG_DFL); 1904 signal (w->signum, SIG_DFL);
884} 1905}
885 1906
886void evidle_start (struct ev_idle *w) 1907void
1908ev_child_start (EV_P_ ev_child *w)
887{ 1909{
1910#if EV_MULTIPLICITY
1911 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1912#endif
888 if (ev_is_active (w)) 1913 if (expect_false (ev_is_active (w)))
889 return; 1914 return;
890 1915
891 ev_start ((W)w, ++idlecnt); 1916 ev_start (EV_A_ (W)w, 1);
892 array_needsize (idles, idlemax, idlecnt, ); 1917 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
893 idles [idlecnt - 1] = w;
894} 1918}
895 1919
896void evidle_stop (struct ev_idle *w) 1920void
1921ev_child_stop (EV_P_ ev_child *w)
897{ 1922{
898 ev_clear ((W)w); 1923 clear_pending (EV_A_ (W)w);
899 if (ev_is_active (w)) 1924 if (expect_false (!ev_is_active (w)))
900 return; 1925 return;
901 1926
902 idles [w->active - 1] = idles [--idlecnt]; 1927 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
903 ev_stop ((W)w); 1928 ev_stop (EV_A_ (W)w);
904} 1929}
905 1930
1931#if EV_STAT_ENABLE
1932
1933# ifdef _WIN32
1934# undef lstat
1935# define lstat(a,b) _stati64 (a,b)
1936# endif
1937
1938#define DEF_STAT_INTERVAL 5.0074891
1939#define MIN_STAT_INTERVAL 0.1074891
1940
1941static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1942
1943#if EV_USE_INOTIFY
1944# define EV_INOTIFY_BUFSIZE 8192
1945
1946static void noinline
1947infy_add (EV_P_ ev_stat *w)
1948{
1949 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);
1950
1951 if (w->wd < 0)
1952 {
1953 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1954
1955 /* monitor some parent directory for speedup hints */
1956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1957 {
1958 char path [4096];
1959 strcpy (path, w->path);
1960
1961 do
1962 {
1963 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1964 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1965
1966 char *pend = strrchr (path, '/');
1967
1968 if (!pend)
1969 break; /* whoops, no '/', complain to your admin */
1970
1971 *pend = 0;
1972 w->wd = inotify_add_watch (fs_fd, path, mask);
1973 }
1974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1975 }
1976 }
1977 else
1978 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1979
1980 if (w->wd >= 0)
1981 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1982}
1983
1984static void noinline
1985infy_del (EV_P_ ev_stat *w)
1986{
1987 int slot;
1988 int wd = w->wd;
1989
1990 if (wd < 0)
1991 return;
1992
1993 w->wd = -2;
1994 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1995 wlist_del (&fs_hash [slot].head, (WL)w);
1996
1997 /* remove this watcher, if others are watching it, they will rearm */
1998 inotify_rm_watch (fs_fd, wd);
1999}
2000
2001static void noinline
2002infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2003{
2004 if (slot < 0)
2005 /* overflow, need to check for all hahs slots */
2006 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2007 infy_wd (EV_A_ slot, wd, ev);
2008 else
2009 {
2010 WL w_;
2011
2012 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2013 {
2014 ev_stat *w = (ev_stat *)w_;
2015 w_ = w_->next; /* lets us remove this watcher and all before it */
2016
2017 if (w->wd == wd || wd == -1)
2018 {
2019 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2020 {
2021 w->wd = -1;
2022 infy_add (EV_A_ w); /* re-add, no matter what */
2023 }
2024
2025 stat_timer_cb (EV_A_ &w->timer, 0);
2026 }
2027 }
2028 }
2029}
2030
2031static void
2032infy_cb (EV_P_ ev_io *w, int revents)
2033{
2034 char buf [EV_INOTIFY_BUFSIZE];
2035 struct inotify_event *ev = (struct inotify_event *)buf;
2036 int ofs;
2037 int len = read (fs_fd, buf, sizeof (buf));
2038
2039 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2040 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2041}
2042
2043void inline_size
2044infy_init (EV_P)
2045{
2046 if (fs_fd != -2)
2047 return;
2048
2049 fs_fd = inotify_init ();
2050
2051 if (fs_fd >= 0)
2052 {
2053 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2054 ev_set_priority (&fs_w, EV_MAXPRI);
2055 ev_io_start (EV_A_ &fs_w);
2056 }
2057}
2058
2059void inline_size
2060infy_fork (EV_P)
2061{
2062 int slot;
2063
2064 if (fs_fd < 0)
2065 return;
2066
2067 close (fs_fd);
2068 fs_fd = inotify_init ();
2069
2070 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2071 {
2072 WL w_ = fs_hash [slot].head;
2073 fs_hash [slot].head = 0;
2074
2075 while (w_)
2076 {
2077 ev_stat *w = (ev_stat *)w_;
2078 w_ = w_->next; /* lets us add this watcher */
2079
2080 w->wd = -1;
2081
2082 if (fs_fd >= 0)
2083 infy_add (EV_A_ w); /* re-add, no matter what */
2084 else
2085 ev_timer_start (EV_A_ &w->timer);
2086 }
2087
2088 }
2089}
2090
2091#endif
2092
2093void
2094ev_stat_stat (EV_P_ ev_stat *w)
2095{
2096 if (lstat (w->path, &w->attr) < 0)
2097 w->attr.st_nlink = 0;
2098 else if (!w->attr.st_nlink)
2099 w->attr.st_nlink = 1;
2100}
2101
2102static void noinline
2103stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2104{
2105 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2106
2107 /* we copy this here each the time so that */
2108 /* prev has the old value when the callback gets invoked */
2109 w->prev = w->attr;
2110 ev_stat_stat (EV_A_ w);
2111
2112 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2113 if (
2114 w->prev.st_dev != w->attr.st_dev
2115 || w->prev.st_ino != w->attr.st_ino
2116 || w->prev.st_mode != w->attr.st_mode
2117 || w->prev.st_nlink != w->attr.st_nlink
2118 || w->prev.st_uid != w->attr.st_uid
2119 || w->prev.st_gid != w->attr.st_gid
2120 || w->prev.st_rdev != w->attr.st_rdev
2121 || w->prev.st_size != w->attr.st_size
2122 || w->prev.st_atime != w->attr.st_atime
2123 || w->prev.st_mtime != w->attr.st_mtime
2124 || w->prev.st_ctime != w->attr.st_ctime
2125 ) {
2126 #if EV_USE_INOTIFY
2127 infy_del (EV_A_ w);
2128 infy_add (EV_A_ w);
2129 ev_stat_stat (EV_A_ w); /* avoid race... */
2130 #endif
2131
2132 ev_feed_event (EV_A_ w, EV_STAT);
2133 }
2134}
2135
2136void
2137ev_stat_start (EV_P_ ev_stat *w)
2138{
2139 if (expect_false (ev_is_active (w)))
2140 return;
2141
2142 /* since we use memcmp, we need to clear any padding data etc. */
2143 memset (&w->prev, 0, sizeof (ev_statdata));
2144 memset (&w->attr, 0, sizeof (ev_statdata));
2145
2146 ev_stat_stat (EV_A_ w);
2147
2148 if (w->interval < MIN_STAT_INTERVAL)
2149 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2150
2151 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2152 ev_set_priority (&w->timer, ev_priority (w));
2153
2154#if EV_USE_INOTIFY
2155 infy_init (EV_A);
2156
2157 if (fs_fd >= 0)
2158 infy_add (EV_A_ w);
2159 else
2160#endif
2161 ev_timer_start (EV_A_ &w->timer);
2162
2163 ev_start (EV_A_ (W)w, 1);
2164}
2165
2166void
2167ev_stat_stop (EV_P_ ev_stat *w)
2168{
2169 clear_pending (EV_A_ (W)w);
2170 if (expect_false (!ev_is_active (w)))
2171 return;
2172
2173#if EV_USE_INOTIFY
2174 infy_del (EV_A_ w);
2175#endif
2176 ev_timer_stop (EV_A_ &w->timer);
2177
2178 ev_stop (EV_A_ (W)w);
2179}
2180#endif
2181
2182#if EV_IDLE_ENABLE
2183void
2184ev_idle_start (EV_P_ ev_idle *w)
2185{
2186 if (expect_false (ev_is_active (w)))
2187 return;
2188
2189 pri_adjust (EV_A_ (W)w);
2190
2191 {
2192 int active = ++idlecnt [ABSPRI (w)];
2193
2194 ++idleall;
2195 ev_start (EV_A_ (W)w, active);
2196
2197 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2198 idles [ABSPRI (w)][active - 1] = w;
2199 }
2200}
2201
2202void
2203ev_idle_stop (EV_P_ ev_idle *w)
2204{
2205 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w)))
2207 return;
2208
2209 {
2210 int active = ((W)w)->active;
2211
2212 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2213 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2214
2215 ev_stop (EV_A_ (W)w);
2216 --idleall;
2217 }
2218}
2219#endif
2220
2221void
906void evprepare_start (struct ev_prepare *w) 2222ev_prepare_start (EV_P_ ev_prepare *w)
907{ 2223{
908 if (ev_is_active (w)) 2224 if (expect_false (ev_is_active (w)))
909 return; 2225 return;
910 2226
911 ev_start ((W)w, ++preparecnt); 2227 ev_start (EV_A_ (W)w, ++preparecnt);
912 array_needsize (prepares, preparemax, preparecnt, ); 2228 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
913 prepares [preparecnt - 1] = w; 2229 prepares [preparecnt - 1] = w;
914} 2230}
915 2231
2232void
916void evprepare_stop (struct ev_prepare *w) 2233ev_prepare_stop (EV_P_ ev_prepare *w)
917{ 2234{
918 ev_clear ((W)w); 2235 clear_pending (EV_A_ (W)w);
919 if (ev_is_active (w)) 2236 if (expect_false (!ev_is_active (w)))
920 return; 2237 return;
921 2238
2239 {
2240 int active = ((W)w)->active;
922 prepares [w->active - 1] = prepares [--preparecnt]; 2241 prepares [active - 1] = prepares [--preparecnt];
2242 ((W)prepares [active - 1])->active = active;
2243 }
2244
923 ev_stop ((W)w); 2245 ev_stop (EV_A_ (W)w);
924} 2246}
925 2247
2248void
926void evcheck_start (struct ev_check *w) 2249ev_check_start (EV_P_ ev_check *w)
927{ 2250{
928 if (ev_is_active (w)) 2251 if (expect_false (ev_is_active (w)))
929 return; 2252 return;
930 2253
931 ev_start ((W)w, ++checkcnt); 2254 ev_start (EV_A_ (W)w, ++checkcnt);
932 array_needsize (checks, checkmax, checkcnt, ); 2255 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
933 checks [checkcnt - 1] = w; 2256 checks [checkcnt - 1] = w;
934} 2257}
935 2258
2259void
936void evcheck_stop (struct ev_check *w) 2260ev_check_stop (EV_P_ ev_check *w)
937{ 2261{
938 ev_clear ((W)w); 2262 clear_pending (EV_A_ (W)w);
939 if (ev_is_active (w)) 2263 if (expect_false (!ev_is_active (w)))
940 return; 2264 return;
941 2265
2266 {
2267 int active = ((W)w)->active;
942 checks [w->active - 1] = checks [--checkcnt]; 2268 checks [active - 1] = checks [--checkcnt];
2269 ((W)checks [active - 1])->active = active;
2270 }
2271
943 ev_stop ((W)w); 2272 ev_stop (EV_A_ (W)w);
944} 2273}
945 2274
946void evchild_start (struct ev_child *w) 2275#if EV_EMBED_ENABLE
2276void noinline
2277ev_embed_sweep (EV_P_ ev_embed *w)
947{ 2278{
2279 ev_loop (w->other, EVLOOP_NONBLOCK);
2280}
2281
2282static void
2283embed_io_cb (EV_P_ ev_io *io, int revents)
2284{
2285 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2286
948 if (ev_is_active (w)) 2287 if (ev_cb (w))
949 return; 2288 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2289 else
2290 ev_loop (w->other, EVLOOP_NONBLOCK);
2291}
950 2292
2293static void
2294embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2295{
2296 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2297
2298 {
2299 struct ev_loop *loop = w->other;
2300
2301 while (fdchangecnt)
2302 {
2303 fd_reify (EV_A);
2304 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2305 }
2306 }
2307}
2308
2309#if 0
2310static void
2311embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2312{
2313 ev_idle_stop (EV_A_ idle);
2314}
2315#endif
2316
2317void
2318ev_embed_start (EV_P_ ev_embed *w)
2319{
2320 if (expect_false (ev_is_active (w)))
2321 return;
2322
2323 {
2324 struct ev_loop *loop = w->other;
2325 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2326 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2327 }
2328
2329 ev_set_priority (&w->io, ev_priority (w));
2330 ev_io_start (EV_A_ &w->io);
2331
2332 ev_prepare_init (&w->prepare, embed_prepare_cb);
2333 ev_set_priority (&w->prepare, EV_MINPRI);
2334 ev_prepare_start (EV_A_ &w->prepare);
2335
2336 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2337
951 ev_start ((W)w, 1); 2338 ev_start (EV_A_ (W)w, 1);
952 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953} 2339}
954 2340
955void evchild_stop (struct ev_child *w) 2341void
2342ev_embed_stop (EV_P_ ev_embed *w)
956{ 2343{
957 ev_clear ((W)w); 2344 clear_pending (EV_A_ (W)w);
958 if (ev_is_active (w)) 2345 if (expect_false (!ev_is_active (w)))
959 return; 2346 return;
960 2347
961 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2348 ev_io_stop (EV_A_ &w->io);
2349 ev_prepare_stop (EV_A_ &w->prepare);
2350
962 ev_stop ((W)w); 2351 ev_stop (EV_A_ (W)w);
963} 2352}
2353#endif
2354
2355#if EV_FORK_ENABLE
2356void
2357ev_fork_start (EV_P_ ev_fork *w)
2358{
2359 if (expect_false (ev_is_active (w)))
2360 return;
2361
2362 ev_start (EV_A_ (W)w, ++forkcnt);
2363 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2364 forks [forkcnt - 1] = w;
2365}
2366
2367void
2368ev_fork_stop (EV_P_ ev_fork *w)
2369{
2370 clear_pending (EV_A_ (W)w);
2371 if (expect_false (!ev_is_active (w)))
2372 return;
2373
2374 {
2375 int active = ((W)w)->active;
2376 forks [active - 1] = forks [--forkcnt];
2377 ((W)forks [active - 1])->active = active;
2378 }
2379
2380 ev_stop (EV_A_ (W)w);
2381}
2382#endif
964 2383
965/*****************************************************************************/ 2384/*****************************************************************************/
966 2385
967struct ev_once 2386struct ev_once
968{ 2387{
969 struct ev_io io; 2388 ev_io io;
970 struct ev_timer to; 2389 ev_timer to;
971 void (*cb)(int revents, void *arg); 2390 void (*cb)(int revents, void *arg);
972 void *arg; 2391 void *arg;
973}; 2392};
974 2393
975static void 2394static void
976once_cb (struct ev_once *once, int revents) 2395once_cb (EV_P_ struct ev_once *once, int revents)
977{ 2396{
978 void (*cb)(int revents, void *arg) = once->cb; 2397 void (*cb)(int revents, void *arg) = once->cb;
979 void *arg = once->arg; 2398 void *arg = once->arg;
980 2399
981 evio_stop (&once->io); 2400 ev_io_stop (EV_A_ &once->io);
982 evtimer_stop (&once->to); 2401 ev_timer_stop (EV_A_ &once->to);
983 free (once); 2402 ev_free (once);
984 2403
985 cb (revents, arg); 2404 cb (revents, arg);
986} 2405}
987 2406
988static void 2407static void
989once_cb_io (struct ev_io *w, int revents) 2408once_cb_io (EV_P_ ev_io *w, int revents)
990{ 2409{
991 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2410 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
992} 2411}
993 2412
994static void 2413static void
995once_cb_to (struct ev_timer *w, int revents) 2414once_cb_to (EV_P_ ev_timer *w, int revents)
996{ 2415{
997 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2416 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
998} 2417}
999 2418
1000void 2419void
1001ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1002{ 2421{
1003 struct ev_once *once = malloc (sizeof (struct ev_once)); 2422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1004 2423
1005 if (!once) 2424 if (expect_false (!once))
1006 cb (EV_ERROR, arg); 2425 {
1007 else 2426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2427 return;
1008 { 2428 }
2429
1009 once->cb = cb; 2430 once->cb = cb;
1010 once->arg = arg; 2431 once->arg = arg;
1011 2432
1012 evw_init (&once->io, once_cb_io); 2433 ev_init (&once->io, once_cb_io);
1013
1014 if (fd >= 0) 2434 if (fd >= 0)
1015 { 2435 {
1016 evio_set (&once->io, fd, events); 2436 ev_io_set (&once->io, fd, events);
1017 evio_start (&once->io); 2437 ev_io_start (EV_A_ &once->io);
1018 } 2438 }
1019 2439
1020 evw_init (&once->to, once_cb_to); 2440 ev_init (&once->to, once_cb_to);
1021
1022 if (timeout >= 0.) 2441 if (timeout >= 0.)
1023 { 2442 {
1024 evtimer_set (&once->to, timeout, 0.); 2443 ev_timer_set (&once->to, timeout, 0.);
1025 evtimer_start (&once->to); 2444 ev_timer_start (EV_A_ &once->to);
1026 }
1027 }
1028}
1029
1030/*****************************************************************************/
1031
1032#if 0
1033
1034struct ev_io wio;
1035
1036static void
1037sin_cb (struct ev_io *w, int revents)
1038{
1039 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1040}
1041
1042static void
1043ocb (struct ev_timer *w, int revents)
1044{
1045 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1046 evtimer_stop (w);
1047 evtimer_start (w);
1048}
1049
1050static void
1051scb (struct ev_signal *w, int revents)
1052{
1053 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1054 evio_stop (&wio);
1055 evio_start (&wio);
1056}
1057
1058static void
1059gcb (struct ev_signal *w, int revents)
1060{
1061 fprintf (stderr, "generic %x\n", revents);
1062
1063}
1064
1065int main (void)
1066{
1067 ev_init (0);
1068
1069 evio_init (&wio, sin_cb, 0, EV_READ);
1070 evio_start (&wio);
1071
1072 struct ev_timer t[10000];
1073
1074#if 0
1075 int i;
1076 for (i = 0; i < 10000; ++i)
1077 { 2445 }
1078 struct ev_timer *w = t + i;
1079 evw_init (w, ocb, i);
1080 evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1081 evtimer_start (w);
1082 if (drand48 () < 0.5)
1083 evtimer_stop (w);
1084 }
1085#endif
1086
1087 struct ev_timer t1;
1088 evtimer_init (&t1, ocb, 5, 10);
1089 evtimer_start (&t1);
1090
1091 struct ev_signal sig;
1092 evsignal_init (&sig, scb, SIGQUIT);
1093 evsignal_start (&sig);
1094
1095 struct ev_check cw;
1096 evcheck_init (&cw, gcb);
1097 evcheck_start (&cw);
1098
1099 struct ev_idle iw;
1100 evidle_init (&iw, gcb);
1101 evidle_start (&iw);
1102
1103 ev_loop (0);
1104
1105 return 0;
1106} 2446}
1107 2447
2448#if EV_MULTIPLICITY
2449 #include "ev_wrap.h"
1108#endif 2450#endif
1109 2451
2452#ifdef __cplusplus
2453}
2454#endif
1110 2455
1111
1112

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