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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 1.221 by root, Sun Apr 6 12:44:49 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/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
49# include "config.h"
50# endif
51
52# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1
55# endif
56# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1
58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
66# endif
67
68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
74# endif
75
76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
90# endif
91
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
132#endif
29 133
30#include <math.h> 134#include <math.h>
31#include <stdlib.h> 135#include <stdlib.h>
32#include <unistd.h>
33#include <fcntl.h> 136#include <fcntl.h>
34#include <signal.h>
35#include <stddef.h> 137#include <stddef.h>
36 138
37#include <stdio.h> 139#include <stdio.h>
38 140
39#include <assert.h> 141#include <assert.h>
40#include <errno.h> 142#include <errno.h>
41#include <sys/types.h> 143#include <sys/types.h>
42#include <sys/wait.h>
43#include <sys/time.h>
44#include <time.h> 144#include <time.h>
45 145
46#ifndef HAVE_MONOTONIC 146#include <signal.h>
47# ifdef CLOCK_MONOTONIC 147
48# define HAVE_MONOTONIC 1 148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
154#ifndef _WIN32
155# include <sys/time.h>
156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
49# endif 163# endif
50#endif 164#endif
51 165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
167
168#ifndef EV_USE_MONOTONIC
169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
178#endif
179
52#ifndef HAVE_SELECT 180#ifndef EV_USE_SELECT
53# define HAVE_SELECT 1 181# define EV_USE_SELECT 1
182#endif
183
184#ifndef EV_USE_POLL
185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
54#endif 189# endif
190#endif
55 191
56#ifndef HAVE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
57# define HAVE_EPOLL 0 196# define EV_USE_EPOLL 0
58#endif 197# endif
198#endif
59 199
60#ifndef HAVE_REALTIME 200#ifndef EV_USE_KQUEUE
61# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ 201# define EV_USE_KQUEUE 0
202#endif
203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
62#endif 213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241
242#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0
245#endif
246
247#ifndef CLOCK_REALTIME
248# undef EV_USE_REALTIME
249# define EV_USE_REALTIME 0
250#endif
251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
267#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h>
269#endif
270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274int eventfd (unsigned int initval, int flags);
275#endif
276
277/**/
278
279/*
280 * This is used to avoid floating point rounding problems.
281 * It is added to ev_rt_now when scheduling periodics
282 * to ensure progress, time-wise, even when rounding
283 * errors are against us.
284 * This value is good at least till the year 4000.
285 * Better solutions welcome.
286 */
287#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
63 288
64#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 289#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65#define MAX_BLOCKTIME 60. 290#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 */ 291/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
67 292
68#include "ev.h" 293#if __GNUC__ >= 4
294# define expect(expr,value) __builtin_expect ((expr),(value))
295# define noinline __attribute__ ((noinline))
296#else
297# define expect(expr,value) (expr)
298# define noinline
299# if __STDC_VERSION__ < 199901L
300# define inline
301# endif
302#endif
69 303
304#define expect_false(expr) expect ((expr) != 0, 0)
305#define expect_true(expr) expect ((expr) != 0, 1)
306#define inline_size static inline
307
308#if EV_MINIMAL
309# define inline_speed static noinline
310#else
311# define inline_speed static inline
312#endif
313
314#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
315#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
316
317#define EMPTY /* required for microsofts broken pseudo-c compiler */
318#define EMPTY2(a,b) /* used to suppress some warnings */
319
70typedef struct ev_watcher *W; 320typedef ev_watcher *W;
71typedef struct ev_watcher_list *WL; 321typedef ev_watcher_list *WL;
72typedef struct ev_watcher_time *WT; 322typedef ev_watcher_time *WT;
73 323
74static ev_tstamp now, diff; /* monotonic clock */ 324#if EV_USE_MONOTONIC
325/* sig_atomic_t is used to avoid per-thread variables or locking but still */
326/* giving it a reasonably high chance of working on typical architetcures */
327static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
328#endif
329
330#ifdef _WIN32
331# include "ev_win32.c"
332#endif
333
334/*****************************************************************************/
335
336static void (*syserr_cb)(const char *msg);
337
338void
339ev_set_syserr_cb (void (*cb)(const char *msg))
340{
341 syserr_cb = cb;
342}
343
344static void noinline
345syserr (const char *msg)
346{
347 if (!msg)
348 msg = "(libev) system error";
349
350 if (syserr_cb)
351 syserr_cb (msg);
352 else
353 {
354 perror (msg);
355 abort ();
356 }
357}
358
359static void *(*alloc)(void *ptr, long size);
360
361void
362ev_set_allocator (void *(*cb)(void *ptr, long size))
363{
364 alloc = cb;
365}
366
367inline_speed void *
368ev_realloc (void *ptr, long size)
369{
370 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
371
372 if (!ptr && size)
373 {
374 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
375 abort ();
376 }
377
378 return ptr;
379}
380
381#define ev_malloc(size) ev_realloc (0, (size))
382#define ev_free(ptr) ev_realloc ((ptr), 0)
383
384/*****************************************************************************/
385
386typedef struct
387{
388 WL head;
389 unsigned char events;
390 unsigned char reify;
391#if EV_SELECT_IS_WINSOCKET
392 SOCKET handle;
393#endif
394} ANFD;
395
396typedef struct
397{
398 W w;
399 int events;
400} ANPENDING;
401
402#if EV_USE_INOTIFY
403typedef struct
404{
405 WL head;
406} ANFS;
407#endif
408
409#if EV_MULTIPLICITY
410
411 struct ev_loop
412 {
413 ev_tstamp ev_rt_now;
414 #define ev_rt_now ((loop)->ev_rt_now)
415 #define VAR(name,decl) decl;
416 #include "ev_vars.h"
417 #undef VAR
418 };
419 #include "ev_wrap.h"
420
421 static struct ev_loop default_loop_struct;
422 struct ev_loop *ev_default_loop_ptr;
423
424#else
425
75ev_tstamp ev_now; 426 ev_tstamp ev_rt_now;
76int ev_method; 427 #define VAR(name,decl) static decl;
428 #include "ev_vars.h"
429 #undef VAR
77 430
78static int have_monotonic; /* runtime */ 431 static int ev_default_loop_ptr;
79 432
80static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 433#endif
81static void (*method_modify)(int fd, int oev, int nev);
82static void (*method_poll)(ev_tstamp timeout);
83 434
84/*****************************************************************************/ 435/*****************************************************************************/
85 436
86ev_tstamp 437ev_tstamp
87ev_time (void) 438ev_time (void)
88{ 439{
89#if HAVE_REALTIME 440#if EV_USE_REALTIME
90 struct timespec ts; 441 struct timespec ts;
91 clock_gettime (CLOCK_REALTIME, &ts); 442 clock_gettime (CLOCK_REALTIME, &ts);
92 return ts.tv_sec + ts.tv_nsec * 1e-9; 443 return ts.tv_sec + ts.tv_nsec * 1e-9;
93#else 444#else
94 struct timeval tv; 445 struct timeval tv;
95 gettimeofday (&tv, 0); 446 gettimeofday (&tv, 0);
96 return tv.tv_sec + tv.tv_usec * 1e-6; 447 return tv.tv_sec + tv.tv_usec * 1e-6;
97#endif 448#endif
98} 449}
99 450
100static ev_tstamp 451ev_tstamp inline_size
101get_clock (void) 452get_clock (void)
102{ 453{
103#if HAVE_MONOTONIC 454#if EV_USE_MONOTONIC
104 if (have_monotonic) 455 if (expect_true (have_monotonic))
105 { 456 {
106 struct timespec ts; 457 struct timespec ts;
107 clock_gettime (CLOCK_MONOTONIC, &ts); 458 clock_gettime (CLOCK_MONOTONIC, &ts);
108 return ts.tv_sec + ts.tv_nsec * 1e-9; 459 return ts.tv_sec + ts.tv_nsec * 1e-9;
109 } 460 }
110#endif 461#endif
111 462
112 return ev_time (); 463 return ev_time ();
113} 464}
114 465
115#define array_needsize(base,cur,cnt,init) \ 466#if EV_MULTIPLICITY
116 if ((cnt) > cur) \ 467ev_tstamp
117 { \ 468ev_now (EV_P)
118 int newcnt = cur; \ 469{
119 do \ 470 return ev_rt_now;
120 { \ 471}
121 newcnt = (newcnt << 1) | 4 & ~3; \ 472#endif
122 } \ 473
123 while ((cnt) > newcnt); \ 474void
124 \ 475ev_sleep (ev_tstamp delay)
125 base = realloc (base, sizeof (*base) * (newcnt)); \ 476{
126 init (base + cur, newcnt - cur); \ 477 if (delay > 0.)
127 cur = newcnt; \
128 } 478 {
479#if EV_USE_NANOSLEEP
480 struct timespec ts;
481
482 ts.tv_sec = (time_t)delay;
483 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
484
485 nanosleep (&ts, 0);
486#elif defined(_WIN32)
487 Sleep ((unsigned long)(delay * 1e3));
488#else
489 struct timeval tv;
490
491 tv.tv_sec = (time_t)delay;
492 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
493
494 select (0, 0, 0, 0, &tv);
495#endif
496 }
497}
129 498
130/*****************************************************************************/ 499/*****************************************************************************/
131 500
501int inline_size
502array_nextsize (int elem, int cur, int cnt)
503{
504 int ncur = cur + 1;
505
506 do
507 ncur <<= 1;
508 while (cnt > ncur);
509
510 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
511 if (elem * ncur > 4096)
512 {
513 ncur *= elem;
514 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
515 ncur = ncur - sizeof (void *) * 4;
516 ncur /= elem;
517 }
518
519 return ncur;
520}
521
522static noinline void *
523array_realloc (int elem, void *base, int *cur, int cnt)
524{
525 *cur = array_nextsize (elem, *cur, cnt);
526 return ev_realloc (base, elem * *cur);
527}
528
529#define array_needsize(type,base,cur,cnt,init) \
530 if (expect_false ((cnt) > (cur))) \
531 { \
532 int ocur_ = (cur); \
533 (base) = (type *)array_realloc \
534 (sizeof (type), (base), &(cur), (cnt)); \
535 init ((base) + (ocur_), (cur) - ocur_); \
536 }
537
538#if 0
539#define array_slim(type,stem) \
540 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
541 { \
542 stem ## max = array_roundsize (stem ## cnt >> 1); \
543 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
544 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
545 }
546#endif
547
548#define array_free(stem, idx) \
549 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
550
551/*****************************************************************************/
552
553void noinline
554ev_feed_event (EV_P_ void *w, int revents)
555{
556 W w_ = (W)w;
557 int pri = ABSPRI (w_);
558
559 if (expect_false (w_->pending))
560 pendings [pri][w_->pending - 1].events |= revents;
561 else
562 {
563 w_->pending = ++pendingcnt [pri];
564 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
565 pendings [pri][w_->pending - 1].w = w_;
566 pendings [pri][w_->pending - 1].events = revents;
567 }
568}
569
570void inline_speed
571queue_events (EV_P_ W *events, int eventcnt, int type)
572{
573 int i;
574
575 for (i = 0; i < eventcnt; ++i)
576 ev_feed_event (EV_A_ events [i], type);
577}
578
579/*****************************************************************************/
580
581void inline_size
582anfds_init (ANFD *base, int count)
583{
584 while (count--)
585 {
586 base->head = 0;
587 base->events = EV_NONE;
588 base->reify = 0;
589
590 ++base;
591 }
592}
593
594void inline_speed
595fd_event (EV_P_ int fd, int revents)
596{
597 ANFD *anfd = anfds + fd;
598 ev_io *w;
599
600 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
601 {
602 int ev = w->events & revents;
603
604 if (ev)
605 ev_feed_event (EV_A_ (W)w, ev);
606 }
607}
608
609void
610ev_feed_fd_event (EV_P_ int fd, int revents)
611{
612 if (fd >= 0 && fd < anfdmax)
613 fd_event (EV_A_ fd, revents);
614}
615
616void inline_size
617fd_reify (EV_P)
618{
619 int i;
620
621 for (i = 0; i < fdchangecnt; ++i)
622 {
623 int fd = fdchanges [i];
624 ANFD *anfd = anfds + fd;
625 ev_io *w;
626
627 unsigned char events = 0;
628
629 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
630 events |= (unsigned char)w->events;
631
632#if EV_SELECT_IS_WINSOCKET
633 if (events)
634 {
635 unsigned long argp;
636 #ifdef EV_FD_TO_WIN32_HANDLE
637 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
638 #else
639 anfd->handle = _get_osfhandle (fd);
640 #endif
641 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
642 }
643#endif
644
645 {
646 unsigned char o_events = anfd->events;
647 unsigned char o_reify = anfd->reify;
648
649 anfd->reify = 0;
650 anfd->events = events;
651
652 if (o_events != events || o_reify & EV_IOFDSET)
653 backend_modify (EV_A_ fd, o_events, events);
654 }
655 }
656
657 fdchangecnt = 0;
658}
659
660void inline_size
661fd_change (EV_P_ int fd, int flags)
662{
663 unsigned char reify = anfds [fd].reify;
664 anfds [fd].reify |= flags;
665
666 if (expect_true (!reify))
667 {
668 ++fdchangecnt;
669 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
670 fdchanges [fdchangecnt - 1] = fd;
671 }
672}
673
674void inline_speed
675fd_kill (EV_P_ int fd)
676{
677 ev_io *w;
678
679 while ((w = (ev_io *)anfds [fd].head))
680 {
681 ev_io_stop (EV_A_ w);
682 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
683 }
684}
685
686int inline_size
687fd_valid (int fd)
688{
689#ifdef _WIN32
690 return _get_osfhandle (fd) != -1;
691#else
692 return fcntl (fd, F_GETFD) != -1;
693#endif
694}
695
696/* called on EBADF to verify fds */
697static void noinline
698fd_ebadf (EV_P)
699{
700 int fd;
701
702 for (fd = 0; fd < anfdmax; ++fd)
703 if (anfds [fd].events)
704 if (!fd_valid (fd) == -1 && errno == EBADF)
705 fd_kill (EV_A_ fd);
706}
707
708/* called on ENOMEM in select/poll to kill some fds and retry */
709static void noinline
710fd_enomem (EV_P)
711{
712 int fd;
713
714 for (fd = anfdmax; fd--; )
715 if (anfds [fd].events)
716 {
717 fd_kill (EV_A_ fd);
718 return;
719 }
720}
721
722/* usually called after fork if backend needs to re-arm all fds from scratch */
723static void noinline
724fd_rearm_all (EV_P)
725{
726 int fd;
727
728 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events)
730 {
731 anfds [fd].events = 0;
732 fd_change (EV_A_ fd, EV_IOFDSET | 1);
733 }
734}
735
736/*****************************************************************************/
737
738void inline_speed
739upheap (WT *heap, int k)
740{
741 WT w = heap [k];
742
743 while (k)
744 {
745 int p = (k - 1) >> 1;
746
747 if (heap [p]->at <= w->at)
748 break;
749
750 heap [k] = heap [p];
751 ((W)heap [k])->active = k + 1;
752 k = p;
753 }
754
755 heap [k] = w;
756 ((W)heap [k])->active = k + 1;
757}
758
759void inline_speed
760downheap (WT *heap, int N, int k)
761{
762 WT w = heap [k];
763
764 for (;;)
765 {
766 int c = (k << 1) + 1;
767
768 if (c >= N)
769 break;
770
771 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
772 ? 1 : 0;
773
774 if (w->at <= heap [c]->at)
775 break;
776
777 heap [k] = heap [c];
778 ((W)heap [k])->active = k + 1;
779
780 k = c;
781 }
782
783 heap [k] = w;
784 ((W)heap [k])->active = k + 1;
785}
786
787void inline_size
788adjustheap (WT *heap, int N, int k)
789{
790 upheap (heap, k);
791 downheap (heap, N, k);
792}
793
794/*****************************************************************************/
795
132typedef struct 796typedef struct
133{ 797{
134 struct ev_io *head; 798 WL head;
135 unsigned char wev, rev; /* want, received event set */ 799 EV_ATOMIC_T gotsig;
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;
271} ANSIG; 800} ANSIG;
272 801
273static ANSIG *signals; 802static ANSIG *signals;
274static int signalmax; 803static int signalmax;
275 804
276static int sigpipe [2]; 805static EV_ATOMIC_T gotsig;
277static sig_atomic_t gotsig;
278static struct ev_io sigev;
279 806
280static void 807void inline_size
281signals_init (ANSIG *base, int count) 808signals_init (ANSIG *base, int count)
282{ 809{
283 while (count--) 810 while (count--)
284 { 811 {
285 base->head = 0; 812 base->head = 0;
286 base->gotsig = 0; 813 base->gotsig = 0;
814
287 ++base; 815 ++base;
288 } 816 }
289} 817}
290 818
819/*****************************************************************************/
820
821void inline_speed
822fd_intern (int fd)
823{
824#ifdef _WIN32
825 int arg = 1;
826 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
827#else
828 fcntl (fd, F_SETFD, FD_CLOEXEC);
829 fcntl (fd, F_SETFL, O_NONBLOCK);
830#endif
831}
832
833static void noinline
834evpipe_init (EV_P)
835{
836 if (!ev_is_active (&pipeev))
837 {
838#if EV_USE_EVENTFD
839 if ((evfd = eventfd (0, 0)) >= 0)
840 {
841 evpipe [0] = -1;
842 fd_intern (evfd);
843 ev_io_set (&pipeev, evfd, EV_READ);
844 }
845 else
846#endif
847 {
848 while (pipe (evpipe))
849 syserr ("(libev) error creating signal/async pipe");
850
851 fd_intern (evpipe [0]);
852 fd_intern (evpipe [1]);
853 ev_io_set (&pipeev, evpipe [0], EV_READ);
854 }
855
856 ev_io_start (EV_A_ &pipeev);
857 ev_unref (EV_A); /* watcher should not keep loop alive */
858 }
859}
860
861void inline_size
862evpipe_write (EV_P_ EV_ATOMIC_T *flag)
863{
864 if (!*flag)
865 {
866 int old_errno = errno; /* save errno because write might clobber it */
867
868 *flag = 1;
869
870#if EV_USE_EVENTFD
871 if (evfd >= 0)
872 {
873 uint64_t counter = 1;
874 write (evfd, &counter, sizeof (uint64_t));
875 }
876 else
877#endif
878 write (evpipe [1], &old_errno, 1);
879
880 errno = old_errno;
881 }
882}
883
291static void 884static void
885pipecb (EV_P_ ev_io *iow, int revents)
886{
887#if EV_USE_EVENTFD
888 if (evfd >= 0)
889 {
890 uint64_t counter = 1;
891 read (evfd, &counter, sizeof (uint64_t));
892 }
893 else
894#endif
895 {
896 char dummy;
897 read (evpipe [0], &dummy, 1);
898 }
899
900 if (gotsig && ev_is_default_loop (EV_A))
901 {
902 int signum;
903 gotsig = 0;
904
905 for (signum = signalmax; signum--; )
906 if (signals [signum].gotsig)
907 ev_feed_signal_event (EV_A_ signum + 1);
908 }
909
910#if EV_ASYNC_ENABLE
911 if (gotasync)
912 {
913 int i;
914 gotasync = 0;
915
916 for (i = asynccnt; i--; )
917 if (asyncs [i]->sent)
918 {
919 asyncs [i]->sent = 0;
920 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
921 }
922 }
923#endif
924}
925
926/*****************************************************************************/
927
928static void
292sighandler (int signum) 929ev_sighandler (int signum)
293{ 930{
931#if EV_MULTIPLICITY
932 struct ev_loop *loop = &default_loop_struct;
933#endif
934
935#if _WIN32
936 signal (signum, ev_sighandler);
937#endif
938
294 signals [signum - 1].gotsig = 1; 939 signals [signum - 1].gotsig = 1;
295 940 evpipe_write (EV_A_ &gotsig);
296 if (!gotsig)
297 {
298 gotsig = 1;
299 write (sigpipe [1], &gotsig, 1);
300 }
301} 941}
302 942
303static void 943void noinline
304sigcb (struct ev_io *iow, int revents) 944ev_feed_signal_event (EV_P_ int signum)
305{ 945{
306 struct ev_signal *w; 946 WL w;
307 int sig;
308 947
309 gotsig = 0; 948#if EV_MULTIPLICITY
310 read (sigpipe [0], &revents, 1); 949 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
950#endif
311 951
312 for (sig = signalmax; sig--; ) 952 --signum;
313 if (signals [sig].gotsig) 953
314 { 954 if (signum < 0 || signum >= signalmax)
955 return;
956
315 signals [sig].gotsig = 0; 957 signals [signum].gotsig = 0;
316 958
317 for (w = signals [sig].head; w; w = w->next) 959 for (w = signals [signum].head; w; w = w->next)
318 event ((W)w, EV_SIGNAL); 960 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
319 }
320}
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} 961}
335 962
336/*****************************************************************************/ 963/*****************************************************************************/
337 964
338static struct ev_idle **idles; 965static WL childs [EV_PID_HASHSIZE];
339static int idlemax, idlecnt;
340 966
341static struct ev_prepare **prepares; 967#ifndef _WIN32
342static int preparemax, preparecnt;
343 968
344static struct ev_check **checks;
345static int checkmax, checkcnt;
346
347/*****************************************************************************/
348
349static struct ev_child *childs [PID_HASHSIZE];
350static struct ev_signal childev; 969static ev_signal childev;
970
971#ifndef WIFCONTINUED
972# define WIFCONTINUED(status) 0
973#endif
974
975void inline_speed
976child_reap (EV_P_ int chain, int pid, int status)
977{
978 ev_child *w;
979 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
980
981 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
982 {
983 if ((w->pid == pid || !w->pid)
984 && (!traced || (w->flags & 1)))
985 {
986 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
987 w->rpid = pid;
988 w->rstatus = status;
989 ev_feed_event (EV_A_ (W)w, EV_CHILD);
990 }
991 }
992}
351 993
352#ifndef WCONTINUED 994#ifndef WCONTINUED
353# define WCONTINUED 0 995# define WCONTINUED 0
354#endif 996#endif
355 997
356static void 998static void
357childcb (struct ev_signal *sw, int revents) 999childcb (EV_P_ ev_signal *sw, int revents)
358{ 1000{
359 struct ev_child *w;
360 int pid, status; 1001 int pid, status;
361 1002
1003 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
362 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 1004 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
363 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 1005 if (!WCONTINUED
364 if (w->pid == pid || w->pid == -1) 1006 || errno != EINVAL
365 { 1007 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
366 w->status = status; 1008 return;
367 event ((W)w, EV_CHILD); 1009
368 } 1010 /* make sure we are called again until all children have been reaped */
1011 /* we need to do it this way so that the callback gets called before we continue */
1012 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1013
1014 child_reap (EV_A_ pid, pid, status);
1015 if (EV_PID_HASHSIZE > 1)
1016 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
369} 1017}
1018
1019#endif
370 1020
371/*****************************************************************************/ 1021/*****************************************************************************/
372 1022
1023#if EV_USE_PORT
1024# include "ev_port.c"
1025#endif
1026#if EV_USE_KQUEUE
1027# include "ev_kqueue.c"
1028#endif
373#if HAVE_EPOLL 1029#if EV_USE_EPOLL
374# include "ev_epoll.c" 1030# include "ev_epoll.c"
375#endif 1031#endif
1032#if EV_USE_POLL
1033# include "ev_poll.c"
1034#endif
376#if HAVE_SELECT 1035#if EV_USE_SELECT
377# include "ev_select.c" 1036# include "ev_select.c"
378#endif 1037#endif
379 1038
380int 1039int
381ev_version_major (void) 1040ev_version_major (void)
… …
387ev_version_minor (void) 1046ev_version_minor (void)
388{ 1047{
389 return EV_VERSION_MINOR; 1048 return EV_VERSION_MINOR;
390} 1049}
391 1050
392int ev_init (int flags) 1051/* return true if we are running with elevated privileges and should ignore env variables */
1052int inline_size
1053enable_secure (void)
393{ 1054{
394 if (!ev_method) 1055#ifdef _WIN32
1056 return 0;
1057#else
1058 return getuid () != geteuid ()
1059 || getgid () != getegid ();
1060#endif
1061}
1062
1063unsigned int
1064ev_supported_backends (void)
1065{
1066 unsigned int flags = 0;
1067
1068 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1069 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1070 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1071 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1072 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1073
1074 return flags;
1075}
1076
1077unsigned int
1078ev_recommended_backends (void)
1079{
1080 unsigned int flags = ev_supported_backends ();
1081
1082#ifndef __NetBSD__
1083 /* kqueue is borked on everything but netbsd apparently */
1084 /* it usually doesn't work correctly on anything but sockets and pipes */
1085 flags &= ~EVBACKEND_KQUEUE;
1086#endif
1087#ifdef __APPLE__
1088 // flags &= ~EVBACKEND_KQUEUE; for documentation
1089 flags &= ~EVBACKEND_POLL;
1090#endif
1091
1092 return flags;
1093}
1094
1095unsigned int
1096ev_embeddable_backends (void)
1097{
1098 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1099
1100 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1101 /* please fix it and tell me how to detect the fix */
1102 flags &= ~EVBACKEND_EPOLL;
1103
1104 return flags;
1105}
1106
1107unsigned int
1108ev_backend (EV_P)
1109{
1110 return backend;
1111}
1112
1113unsigned int
1114ev_loop_count (EV_P)
1115{
1116 return loop_count;
1117}
1118
1119void
1120ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1121{
1122 io_blocktime = interval;
1123}
1124
1125void
1126ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1127{
1128 timeout_blocktime = interval;
1129}
1130
1131static void noinline
1132loop_init (EV_P_ unsigned int flags)
1133{
1134 if (!backend)
395 { 1135 {
396#if HAVE_MONOTONIC 1136#if EV_USE_MONOTONIC
397 { 1137 {
398 struct timespec ts; 1138 struct timespec ts;
399 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1139 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400 have_monotonic = 1; 1140 have_monotonic = 1;
401 } 1141 }
402#endif 1142#endif
403 1143
404 ev_now = ev_time (); 1144 ev_rt_now = ev_time ();
405 now = get_clock (); 1145 mn_now = get_clock ();
1146 now_floor = mn_now;
406 diff = ev_now - now; 1147 rtmn_diff = ev_rt_now - mn_now;
407 1148
408 if (pipe (sigpipe)) 1149 io_blocktime = 0.;
409 return 0; 1150 timeout_blocktime = 0.;
1151 backend = 0;
1152 backend_fd = -1;
1153 gotasync = 0;
1154#if EV_USE_INOTIFY
1155 fs_fd = -2;
1156#endif
410 1157
411 ev_method = EVMETHOD_NONE; 1158 /* pid check not overridable via env */
1159#ifndef _WIN32
1160 if (flags & EVFLAG_FORKCHECK)
1161 curpid = getpid ();
1162#endif
1163
1164 if (!(flags & EVFLAG_NOENV)
1165 && !enable_secure ()
1166 && getenv ("LIBEV_FLAGS"))
1167 flags = atoi (getenv ("LIBEV_FLAGS"));
1168
1169 if (!(flags & 0x0000ffffUL))
1170 flags |= ev_recommended_backends ();
1171
1172#if EV_USE_PORT
1173 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1174#endif
1175#if EV_USE_KQUEUE
1176 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1177#endif
412#if HAVE_EPOLL 1178#if EV_USE_EPOLL
413 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1179 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
414#endif 1180#endif
1181#if EV_USE_POLL
1182 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1183#endif
415#if HAVE_SELECT 1184#if EV_USE_SELECT
416 if (ev_method == EVMETHOD_NONE) select_init (flags); 1185 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
417#endif 1186#endif
418 1187
419 if (ev_method) 1188 ev_init (&pipeev, pipecb);
1189 ev_set_priority (&pipeev, EV_MAXPRI);
1190 }
1191}
1192
1193static void noinline
1194loop_destroy (EV_P)
1195{
1196 int i;
1197
1198 if (ev_is_active (&pipeev))
1199 {
1200 ev_ref (EV_A); /* signal watcher */
1201 ev_io_stop (EV_A_ &pipeev);
1202
1203#if EV_USE_EVENTFD
1204 if (evfd >= 0)
1205 close (evfd);
1206#endif
1207
1208 if (evpipe [0] >= 0)
420 { 1209 {
421 evw_init (&sigev, sigcb); 1210 close (evpipe [0]);
422 siginit (); 1211 close (evpipe [1]);
423
424 evsignal_init (&childev, childcb, SIGCHLD);
425 evsignal_start (&childev);
426 } 1212 }
427 } 1213 }
428 1214
429 return ev_method; 1215#if EV_USE_INOTIFY
1216 if (fs_fd >= 0)
1217 close (fs_fd);
1218#endif
1219
1220 if (backend_fd >= 0)
1221 close (backend_fd);
1222
1223#if EV_USE_PORT
1224 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1225#endif
1226#if EV_USE_KQUEUE
1227 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1228#endif
1229#if EV_USE_EPOLL
1230 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1231#endif
1232#if EV_USE_POLL
1233 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1234#endif
1235#if EV_USE_SELECT
1236 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1237#endif
1238
1239 for (i = NUMPRI; i--; )
1240 {
1241 array_free (pending, [i]);
1242#if EV_IDLE_ENABLE
1243 array_free (idle, [i]);
1244#endif
1245 }
1246
1247 ev_free (anfds); anfdmax = 0;
1248
1249 /* have to use the microsoft-never-gets-it-right macro */
1250 array_free (fdchange, EMPTY);
1251 array_free (timer, EMPTY);
1252#if EV_PERIODIC_ENABLE
1253 array_free (periodic, EMPTY);
1254#endif
1255#if EV_FORK_ENABLE
1256 array_free (fork, EMPTY);
1257#endif
1258 array_free (prepare, EMPTY);
1259 array_free (check, EMPTY);
1260#if EV_ASYNC_ENABLE
1261 array_free (async, EMPTY);
1262#endif
1263
1264 backend = 0;
1265}
1266
1267void inline_size infy_fork (EV_P);
1268
1269void inline_size
1270loop_fork (EV_P)
1271{
1272#if EV_USE_PORT
1273 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1274#endif
1275#if EV_USE_KQUEUE
1276 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1277#endif
1278#if EV_USE_EPOLL
1279 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1280#endif
1281#if EV_USE_INOTIFY
1282 infy_fork (EV_A);
1283#endif
1284
1285 if (ev_is_active (&pipeev))
1286 {
1287 /* this "locks" the handlers against writing to the pipe */
1288 /* while we modify the fd vars */
1289 gotsig = 1;
1290#if EV_ASYNC_ENABLE
1291 gotasync = 1;
1292#endif
1293
1294 ev_ref (EV_A);
1295 ev_io_stop (EV_A_ &pipeev);
1296
1297#if EV_USE_EVENTFD
1298 if (evfd >= 0)
1299 close (evfd);
1300#endif
1301
1302 if (evpipe [0] >= 0)
1303 {
1304 close (evpipe [0]);
1305 close (evpipe [1]);
1306 }
1307
1308 evpipe_init (EV_A);
1309 /* now iterate over everything, in case we missed something */
1310 pipecb (EV_A_ &pipeev, EV_READ);
1311 }
1312
1313 postfork = 0;
1314}
1315
1316#if EV_MULTIPLICITY
1317struct ev_loop *
1318ev_loop_new (unsigned int flags)
1319{
1320 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1321
1322 memset (loop, 0, sizeof (struct ev_loop));
1323
1324 loop_init (EV_A_ flags);
1325
1326 if (ev_backend (EV_A))
1327 return loop;
1328
1329 return 0;
1330}
1331
1332void
1333ev_loop_destroy (EV_P)
1334{
1335 loop_destroy (EV_A);
1336 ev_free (loop);
1337}
1338
1339void
1340ev_loop_fork (EV_P)
1341{
1342 postfork = 1; /* must be in line with ev_default_fork */
1343}
1344
1345#endif
1346
1347#if EV_MULTIPLICITY
1348struct ev_loop *
1349ev_default_loop_init (unsigned int flags)
1350#else
1351int
1352ev_default_loop (unsigned int flags)
1353#endif
1354{
1355 if (!ev_default_loop_ptr)
1356 {
1357#if EV_MULTIPLICITY
1358 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1359#else
1360 ev_default_loop_ptr = 1;
1361#endif
1362
1363 loop_init (EV_A_ flags);
1364
1365 if (ev_backend (EV_A))
1366 {
1367#ifndef _WIN32
1368 ev_signal_init (&childev, childcb, SIGCHLD);
1369 ev_set_priority (&childev, EV_MAXPRI);
1370 ev_signal_start (EV_A_ &childev);
1371 ev_unref (EV_A); /* child watcher should not keep loop alive */
1372#endif
1373 }
1374 else
1375 ev_default_loop_ptr = 0;
1376 }
1377
1378 return ev_default_loop_ptr;
1379}
1380
1381void
1382ev_default_destroy (void)
1383{
1384#if EV_MULTIPLICITY
1385 struct ev_loop *loop = ev_default_loop_ptr;
1386#endif
1387
1388#ifndef _WIN32
1389 ev_ref (EV_A); /* child watcher */
1390 ev_signal_stop (EV_A_ &childev);
1391#endif
1392
1393 loop_destroy (EV_A);
1394}
1395
1396void
1397ev_default_fork (void)
1398{
1399#if EV_MULTIPLICITY
1400 struct ev_loop *loop = ev_default_loop_ptr;
1401#endif
1402
1403 if (backend)
1404 postfork = 1; /* must be in line with ev_loop_fork */
430} 1405}
431 1406
432/*****************************************************************************/ 1407/*****************************************************************************/
433 1408
434void 1409void
435ev_prefork (void) 1410ev_invoke (EV_P_ void *w, int revents)
436{ 1411{
437 /* nop */ 1412 EV_CB_INVOKE ((W)w, revents);
438} 1413}
439 1414
440void 1415void inline_speed
441ev_postfork_parent (void) 1416call_pending (EV_P)
442{ 1417{
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; 1418 int pri;
467 1419
468 for (i = 0; i < fdchangecnt; ++i) 1420 for (pri = NUMPRI; pri--; )
1421 while (pendingcnt [pri])
469 { 1422 {
470 int fd = fdchanges [i]; 1423 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
471 ANFD *anfd = anfds + fd;
472 struct ev_io *w;
473 1424
474 int wev = 0; 1425 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 { 1426 {
481 method_modify (fd, anfd->wev, wev); 1427 /*assert (("non-pending watcher on pending list", p->w->pending));*/
482 anfd->wev = wev;
483 }
484 }
485 1428
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; 1429 p->w->pending = 0;
499 p->w->cb (p->w, p->events); 1430 EV_CB_INVOKE (p->w, p->events);
500 } 1431 }
501 } 1432 }
502} 1433}
503 1434
504static void 1435void inline_size
505timers_reify (void) 1436timers_reify (EV_P)
506{ 1437{
507 while (timercnt && timers [0]->at <= now) 1438 while (timercnt && ((WT)timers [0])->at <= mn_now)
508 { 1439 {
509 struct ev_timer *w = timers [0]; 1440 ev_timer *w = (ev_timer *)timers [0];
510 1441
511 event ((W)w, EV_TIMEOUT); 1442 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
512 1443
513 /* first reschedule or stop timer */ 1444 /* first reschedule or stop timer */
514 if (w->repeat) 1445 if (w->repeat)
515 { 1446 {
1447 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1448
516 w->at = now + w->repeat; 1449 ((WT)w)->at += w->repeat;
517 assert (("timer timeout in the past, negative repeat?", w->at > now)); 1450 if (((WT)w)->at < mn_now)
1451 ((WT)w)->at = mn_now;
1452
518 downheap ((WT *)timers, timercnt, 0); 1453 downheap (timers, timercnt, 0);
519 } 1454 }
520 else 1455 else
521 evtimer_stop (w); /* nonrepeating: stop timer */ 1456 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522 }
523}
524 1457
525static void 1458 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1459 }
1460}
1461
1462#if EV_PERIODIC_ENABLE
1463void inline_size
526periodics_reify (void) 1464periodics_reify (EV_P)
527{ 1465{
528 while (periodiccnt && periodics [0]->at <= ev_now) 1466 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529 { 1467 {
530 struct ev_periodic *w = periodics [0]; 1468 ev_periodic *w = (ev_periodic *)periodics [0];
1469
1470 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
531 1471
532 /* first reschedule or stop timer */ 1472 /* first reschedule or stop timer */
533 if (w->interval) 1473 if (w->reschedule_cb)
534 { 1474 {
535 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1475 ((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)); 1476 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
537 downheap ((WT *)periodics, periodiccnt, 0); 1477 downheap (periodics, periodiccnt, 0);
1478 }
1479 else if (w->interval)
1480 {
1481 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1482 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1483 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1484 downheap (periodics, periodiccnt, 0);
538 } 1485 }
539 else 1486 else
540 evperiodic_stop (w); /* nonrepeating: stop timer */ 1487 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541 1488
542 event ((W)w, EV_TIMEOUT); 1489 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543 } 1490 }
544} 1491}
545 1492
546static void 1493static void noinline
547periodics_reschedule (ev_tstamp diff) 1494periodics_reschedule (EV_P)
548{ 1495{
549 int i; 1496 int i;
550 1497
551 /* adjust periodics after time jump */ 1498 /* adjust periodics after time jump */
552 for (i = 0; i < periodiccnt; ++i) 1499 for (i = 0; i < periodiccnt; ++i)
553 { 1500 {
554 struct ev_periodic *w = periodics [i]; 1501 ev_periodic *w = (ev_periodic *)periodics [i];
555 1502
1503 if (w->reschedule_cb)
1504 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556 if (w->interval) 1505 else if (w->interval)
1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 }
1508
1509 /* now rebuild the heap */
1510 for (i = periodiccnt >> 1; i--; )
1511 downheap (periodics, periodiccnt, i);
1512}
1513#endif
1514
1515#if EV_IDLE_ENABLE
1516void inline_size
1517idle_reify (EV_P)
1518{
1519 if (expect_false (idleall))
1520 {
1521 int pri;
1522
1523 for (pri = NUMPRI; pri--; )
557 { 1524 {
558 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1525 if (pendingcnt [pri])
1526 break;
559 1527
560 if (fabs (diff) >= 1e-4) 1528 if (idlecnt [pri])
561 { 1529 {
562 evperiodic_stop (w); 1530 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
563 evperiodic_start (w); 1531 break;
564
565 i = 0; /* restart loop, inefficient, but time jumps should be rare */
566 } 1532 }
567 } 1533 }
568 } 1534 }
569} 1535}
1536#endif
570 1537
571static void 1538void inline_speed
572time_update (void) 1539time_update (EV_P_ ev_tstamp max_block)
573{ 1540{
574 int i; 1541 int i;
575 1542
576 ev_now = ev_time (); 1543#if EV_USE_MONOTONIC
577
578 if (have_monotonic) 1544 if (expect_true (have_monotonic))
579 { 1545 {
580 ev_tstamp odiff = diff; 1546 ev_tstamp odiff = rtmn_diff;
581 1547
582 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1548 mn_now = get_clock ();
1549
1550 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1551 /* interpolate in the meantime */
1552 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
583 { 1553 {
584 now = get_clock (); 1554 ev_rt_now = rtmn_diff + mn_now;
1555 return;
1556 }
1557
1558 now_floor = mn_now;
1559 ev_rt_now = ev_time ();
1560
1561 /* loop a few times, before making important decisions.
1562 * on the choice of "4": one iteration isn't enough,
1563 * in case we get preempted during the calls to
1564 * ev_time and get_clock. a second call is almost guaranteed
1565 * to succeed in that case, though. and looping a few more times
1566 * doesn't hurt either as we only do this on time-jumps or
1567 * in the unlikely event of having been preempted here.
1568 */
1569 for (i = 4; --i; )
1570 {
585 diff = ev_now - now; 1571 rtmn_diff = ev_rt_now - mn_now;
586 1572
587 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1573 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
588 return; /* all is well */ 1574 return; /* all is well */
589 1575
590 ev_now = ev_time (); 1576 ev_rt_now = ev_time ();
1577 mn_now = get_clock ();
1578 now_floor = mn_now;
591 } 1579 }
592 1580
1581# if EV_PERIODIC_ENABLE
593 periodics_reschedule (diff - odiff); 1582 periodics_reschedule (EV_A);
1583# endif
594 /* no timer adjustment, as the monotonic clock doesn't jump */ 1584 /* no timer adjustment, as the monotonic clock doesn't jump */
1585 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
595 } 1586 }
596 else 1587 else
1588#endif
597 { 1589 {
598 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1590 ev_rt_now = ev_time ();
1591
1592 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
599 { 1593 {
1594#if EV_PERIODIC_ENABLE
600 periodics_reschedule (ev_now - now); 1595 periodics_reschedule (EV_A);
601 1596#endif
602 /* adjust timers. this is easy, as the offset is the same for all */ 1597 /* adjust timers. this is easy, as the offset is the same for all of them */
603 for (i = 0; i < timercnt; ++i) 1598 for (i = 0; i < timercnt; ++i)
604 timers [i]->at += diff; 1599 ((WT)timers [i])->at += ev_rt_now - mn_now;
605 } 1600 }
606 1601
607 now = ev_now; 1602 mn_now = ev_rt_now;
608 } 1603 }
609} 1604}
610 1605
611int ev_loop_done; 1606void
1607ev_ref (EV_P)
1608{
1609 ++activecnt;
1610}
612 1611
1612void
1613ev_unref (EV_P)
1614{
1615 --activecnt;
1616}
1617
1618static int loop_done;
1619
1620void
613void ev_loop (int flags) 1621ev_loop (EV_P_ int flags)
614{ 1622{
615 double block; 1623 loop_done = EVUNLOOP_CANCEL;
616 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1624
1625 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
617 1626
618 do 1627 do
619 { 1628 {
1629#ifndef _WIN32
1630 if (expect_false (curpid)) /* penalise the forking check even more */
1631 if (expect_false (getpid () != curpid))
1632 {
1633 curpid = getpid ();
1634 postfork = 1;
1635 }
1636#endif
1637
1638#if EV_FORK_ENABLE
1639 /* we might have forked, so queue fork handlers */
1640 if (expect_false (postfork))
1641 if (forkcnt)
1642 {
1643 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1644 call_pending (EV_A);
1645 }
1646#endif
1647
620 /* queue check watchers (and execute them) */ 1648 /* queue prepare watchers (and execute them) */
621 if (preparecnt) 1649 if (expect_false (preparecnt))
622 { 1650 {
623 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1651 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624 call_pending (); 1652 call_pending (EV_A);
625 } 1653 }
626 1654
1655 if (expect_false (!activecnt))
1656 break;
1657
1658 /* we might have forked, so reify kernel state if necessary */
1659 if (expect_false (postfork))
1660 loop_fork (EV_A);
1661
627 /* update fd-related kernel structures */ 1662 /* update fd-related kernel structures */
628 fd_reify (); 1663 fd_reify (EV_A);
629 1664
630 /* calculate blocking time */ 1665 /* calculate blocking time */
1666 {
1667 ev_tstamp waittime = 0.;
1668 ev_tstamp sleeptime = 0.;
631 1669
632 /* we only need this for !monotonic clockor timers, but as we basically 1670 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 { 1671 {
1672 /* update time to cancel out callback processing overhead */
1673 time_update (EV_A_ 1e100);
1674
640 block = MAX_BLOCKTIME; 1675 waittime = MAX_BLOCKTIME;
641 1676
642 if (timercnt) 1677 if (timercnt)
643 { 1678 {
644 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1679 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
645 if (block > to) block = to; 1680 if (waittime > to) waittime = to;
646 } 1681 }
647 1682
1683#if EV_PERIODIC_ENABLE
648 if (periodiccnt) 1684 if (periodiccnt)
649 { 1685 {
650 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1686 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
651 if (block > to) block = to; 1687 if (waittime > to) waittime = to;
652 } 1688 }
1689#endif
653 1690
654 if (block < 0.) block = 0.; 1691 if (expect_false (waittime < timeout_blocktime))
1692 waittime = timeout_blocktime;
1693
1694 sleeptime = waittime - backend_fudge;
1695
1696 if (expect_true (sleeptime > io_blocktime))
1697 sleeptime = io_blocktime;
1698
1699 if (sleeptime)
1700 {
1701 ev_sleep (sleeptime);
1702 waittime -= sleeptime;
1703 }
655 } 1704 }
656 1705
657 method_poll (block); 1706 ++loop_count;
1707 backend_poll (EV_A_ waittime);
658 1708
659 /* update ev_now, do magic */ 1709 /* update ev_rt_now, do magic */
660 time_update (); 1710 time_update (EV_A_ waittime + sleeptime);
1711 }
661 1712
662 /* queue pending timers and reschedule them */ 1713 /* queue pending timers and reschedule them */
663 timers_reify (); /* relative timers called last */ 1714 timers_reify (EV_A); /* relative timers called last */
1715#if EV_PERIODIC_ENABLE
664 periodics_reify (); /* absolute timers called first */ 1716 periodics_reify (EV_A); /* absolute timers called first */
1717#endif
665 1718
1719#if EV_IDLE_ENABLE
666 /* queue idle watchers unless io or timers are pending */ 1720 /* queue idle watchers unless other events are pending */
667 if (!pendingcnt) 1721 idle_reify (EV_A);
668 queue_events ((W *)idles, idlecnt, EV_IDLE); 1722#endif
669 1723
670 /* queue check watchers, to be executed first */ 1724 /* queue check watchers, to be executed first */
671 if (checkcnt) 1725 if (expect_false (checkcnt))
672 queue_events ((W *)checks, checkcnt, EV_CHECK); 1726 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673 1727
674 call_pending (); 1728 call_pending (EV_A);
675 } 1729 }
676 while (!ev_loop_done); 1730 while (expect_true (
1731 activecnt
1732 && !loop_done
1733 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1734 ));
677 1735
678 if (ev_loop_done != 2) 1736 if (loop_done == EVUNLOOP_ONE)
1737 loop_done = EVUNLOOP_CANCEL;
1738}
1739
1740void
1741ev_unloop (EV_P_ int how)
1742{
679 ev_loop_done = 0; 1743 loop_done = how;
680} 1744}
681 1745
682/*****************************************************************************/ 1746/*****************************************************************************/
683 1747
684static void 1748void inline_size
685wlist_add (WL *head, WL elem) 1749wlist_add (WL *head, WL elem)
686{ 1750{
687 elem->next = *head; 1751 elem->next = *head;
688 *head = elem; 1752 *head = elem;
689} 1753}
690 1754
691static void 1755void inline_size
692wlist_del (WL *head, WL elem) 1756wlist_del (WL *head, WL elem)
693{ 1757{
694 while (*head) 1758 while (*head)
695 { 1759 {
696 if (*head == elem) 1760 if (*head == elem)
… …
701 1765
702 head = &(*head)->next; 1766 head = &(*head)->next;
703 } 1767 }
704} 1768}
705 1769
706static void 1770void inline_speed
707ev_clear (W w) 1771clear_pending (EV_P_ W w)
708{ 1772{
709 if (w->pending) 1773 if (w->pending)
710 { 1774 {
711 pendings [w->pending - 1].w = 0; 1775 pendings [ABSPRI (w)][w->pending - 1].w = 0;
712 w->pending = 0; 1776 w->pending = 0;
713 } 1777 }
714} 1778}
715 1779
716static void 1780int
1781ev_clear_pending (EV_P_ void *w)
1782{
1783 W w_ = (W)w;
1784 int pending = w_->pending;
1785
1786 if (expect_true (pending))
1787 {
1788 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1789 w_->pending = 0;
1790 p->w = 0;
1791 return p->events;
1792 }
1793 else
1794 return 0;
1795}
1796
1797void inline_size
1798pri_adjust (EV_P_ W w)
1799{
1800 int pri = w->priority;
1801 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1802 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1803 w->priority = pri;
1804}
1805
1806void inline_speed
717ev_start (W w, int active) 1807ev_start (EV_P_ W w, int active)
718{ 1808{
1809 pri_adjust (EV_A_ w);
719 w->active = active; 1810 w->active = active;
1811 ev_ref (EV_A);
720} 1812}
721 1813
722static void 1814void inline_size
723ev_stop (W w) 1815ev_stop (EV_P_ W w)
724{ 1816{
1817 ev_unref (EV_A);
725 w->active = 0; 1818 w->active = 0;
726} 1819}
727 1820
728/*****************************************************************************/ 1821/*****************************************************************************/
729 1822
730void 1823void noinline
731evio_start (struct ev_io *w) 1824ev_io_start (EV_P_ ev_io *w)
732{ 1825{
733 if (ev_is_active (w))
734 return;
735
736 int fd = w->fd; 1826 int fd = w->fd;
737 1827
1828 if (expect_false (ev_is_active (w)))
1829 return;
1830
1831 assert (("ev_io_start called with negative fd", fd >= 0));
1832
738 ev_start ((W)w, 1); 1833 ev_start (EV_A_ (W)w, 1);
739 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1834 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1835 wlist_add (&anfds[fd].head, (WL)w);
741 1836
742 ++fdchangecnt; 1837 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
743 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 1838 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} 1839}
749 1840
750void 1841void noinline
751evio_stop (struct ev_io *w) 1842ev_io_stop (EV_P_ ev_io *w)
752{ 1843{
753 if (w->fd == 9) 1844 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)) 1845 if (expect_false (!ev_is_active (w)))
757 return; 1846 return;
758 1847
1848 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1849
759 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1850 wlist_del (&anfds[w->fd].head, (WL)w);
760 ev_stop ((W)w); 1851 ev_stop (EV_A_ (W)w);
761 1852
762 ++fdchangecnt; 1853 fd_change (EV_A_ w->fd, 1);
763 array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764 fdchanges [fdchangecnt - 1] = w->fd;
765} 1854}
766 1855
767void 1856void noinline
768evtimer_start (struct ev_timer *w) 1857ev_timer_start (EV_P_ ev_timer *w)
769{ 1858{
770 if (ev_is_active (w)) 1859 if (expect_false (ev_is_active (w)))
771 return; 1860 return;
772 1861
773 w->at += now; 1862 ((WT)w)->at += mn_now;
774 1863
775 assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); 1864 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776 1865
777 ev_start ((W)w, ++timercnt); 1866 ev_start (EV_A_ (W)w, ++timercnt);
778 array_needsize (timers, timermax, timercnt, ); 1867 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
779 timers [timercnt - 1] = w; 1868 timers [timercnt - 1] = (WT)w;
780 upheap ((WT *)timers, timercnt - 1); 1869 upheap (timers, timercnt - 1);
781}
782 1870
783void 1871 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1872}
1873
1874void noinline
784evtimer_stop (struct ev_timer *w) 1875ev_timer_stop (EV_P_ ev_timer *w)
785{ 1876{
786 ev_clear ((W)w); 1877 clear_pending (EV_A_ (W)w);
787 if (!ev_is_active (w)) 1878 if (expect_false (!ev_is_active (w)))
788 return; 1879 return;
789 1880
790 if (w->active < timercnt--) 1881 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1882
1883 {
1884 int active = ((W)w)->active;
1885
1886 if (expect_true (--active < --timercnt))
791 { 1887 {
792 timers [w->active - 1] = timers [timercnt]; 1888 timers [active] = timers [timercnt];
793 downheap ((WT *)timers, timercnt, w->active - 1); 1889 adjustheap (timers, timercnt, active);
794 } 1890 }
1891 }
795 1892
796 w->at = w->repeat; 1893 ((WT)w)->at -= mn_now;
797 1894
798 ev_stop ((W)w); 1895 ev_stop (EV_A_ (W)w);
799} 1896}
800 1897
801void 1898void noinline
802evtimer_again (struct ev_timer *w) 1899ev_timer_again (EV_P_ ev_timer *w)
803{ 1900{
804 if (ev_is_active (w)) 1901 if (ev_is_active (w))
805 { 1902 {
806 if (w->repeat) 1903 if (w->repeat)
807 { 1904 {
808 w->at = now + w->repeat; 1905 ((WT)w)->at = mn_now + w->repeat;
809 downheap ((WT *)timers, timercnt, w->active - 1); 1906 adjustheap (timers, timercnt, ((W)w)->active - 1);
810 } 1907 }
811 else 1908 else
812 evtimer_stop (w); 1909 ev_timer_stop (EV_A_ w);
813 } 1910 }
814 else if (w->repeat) 1911 else if (w->repeat)
1912 {
1913 w->at = w->repeat;
815 evtimer_start (w); 1914 ev_timer_start (EV_A_ w);
1915 }
816} 1916}
817 1917
818void 1918#if EV_PERIODIC_ENABLE
1919void noinline
819evperiodic_start (struct ev_periodic *w) 1920ev_periodic_start (EV_P_ ev_periodic *w)
820{ 1921{
821 if (ev_is_active (w)) 1922 if (expect_false (ev_is_active (w)))
822 return; 1923 return;
823 1924
824 assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); 1925 if (w->reschedule_cb)
825 1926 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1927 else if (w->interval)
1928 {
1929 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 */ 1930 /* 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; 1931 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1932 }
1933 else
1934 ((WT)w)->at = w->offset;
829 1935
830 ev_start ((W)w, ++periodiccnt); 1936 ev_start (EV_A_ (W)w, ++periodiccnt);
831 array_needsize (periodics, periodicmax, periodiccnt, ); 1937 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
832 periodics [periodiccnt - 1] = w; 1938 periodics [periodiccnt - 1] = (WT)w;
833 upheap ((WT *)periodics, periodiccnt - 1); 1939 upheap (periodics, periodiccnt - 1);
834}
835 1940
836void 1941 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1942}
1943
1944void noinline
837evperiodic_stop (struct ev_periodic *w) 1945ev_periodic_stop (EV_P_ ev_periodic *w)
838{ 1946{
839 ev_clear ((W)w); 1947 clear_pending (EV_A_ (W)w);
840 if (!ev_is_active (w)) 1948 if (expect_false (!ev_is_active (w)))
841 return; 1949 return;
842 1950
843 if (w->active < periodiccnt--) 1951 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1952
1953 {
1954 int active = ((W)w)->active;
1955
1956 if (expect_true (--active < --periodiccnt))
844 { 1957 {
845 periodics [w->active - 1] = periodics [periodiccnt]; 1958 periodics [active] = periodics [periodiccnt];
846 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1959 adjustheap (periodics, periodiccnt, active);
847 } 1960 }
1961 }
848 1962
849 ev_stop ((W)w); 1963 ev_stop (EV_A_ (W)w);
850} 1964}
851 1965
852void 1966void noinline
1967ev_periodic_again (EV_P_ ev_periodic *w)
1968{
1969 /* TODO: use adjustheap and recalculation */
1970 ev_periodic_stop (EV_A_ w);
1971 ev_periodic_start (EV_A_ w);
1972}
1973#endif
1974
1975#ifndef SA_RESTART
1976# define SA_RESTART 0
1977#endif
1978
1979void noinline
853evsignal_start (struct ev_signal *w) 1980ev_signal_start (EV_P_ ev_signal *w)
854{ 1981{
1982#if EV_MULTIPLICITY
1983 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1984#endif
855 if (ev_is_active (w)) 1985 if (expect_false (ev_is_active (w)))
856 return; 1986 return;
857 1987
858 ev_start ((W)w, 1); 1988 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1989
1990 evpipe_init (EV_A);
1991
1992 {
1993#ifndef _WIN32
1994 sigset_t full, prev;
1995 sigfillset (&full);
1996 sigprocmask (SIG_SETMASK, &full, &prev);
1997#endif
1998
859 array_needsize (signals, signalmax, w->signum, signals_init); 1999 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2000
2001#ifndef _WIN32
2002 sigprocmask (SIG_SETMASK, &prev, 0);
2003#endif
2004 }
2005
2006 ev_start (EV_A_ (W)w, 1);
860 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2007 wlist_add (&signals [w->signum - 1].head, (WL)w);
861 2008
862 if (!w->next) 2009 if (!((WL)w)->next)
863 { 2010 {
2011#if _WIN32
2012 signal (w->signum, ev_sighandler);
2013#else
864 struct sigaction sa; 2014 struct sigaction sa;
865 sa.sa_handler = sighandler; 2015 sa.sa_handler = ev_sighandler;
866 sigfillset (&sa.sa_mask); 2016 sigfillset (&sa.sa_mask);
867 sa.sa_flags = 0; 2017 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868 sigaction (w->signum, &sa, 0); 2018 sigaction (w->signum, &sa, 0);
2019#endif
869 } 2020 }
870} 2021}
871 2022
872void 2023void noinline
873evsignal_stop (struct ev_signal *w) 2024ev_signal_stop (EV_P_ ev_signal *w)
874{ 2025{
875 ev_clear ((W)w); 2026 clear_pending (EV_A_ (W)w);
876 if (!ev_is_active (w)) 2027 if (expect_false (!ev_is_active (w)))
877 return; 2028 return;
878 2029
879 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2030 wlist_del (&signals [w->signum - 1].head, (WL)w);
880 ev_stop ((W)w); 2031 ev_stop (EV_A_ (W)w);
881 2032
882 if (!signals [w->signum - 1].head) 2033 if (!signals [w->signum - 1].head)
883 signal (w->signum, SIG_DFL); 2034 signal (w->signum, SIG_DFL);
884} 2035}
885 2036
886void evidle_start (struct ev_idle *w) 2037void
2038ev_child_start (EV_P_ ev_child *w)
887{ 2039{
2040#if EV_MULTIPLICITY
2041 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2042#endif
888 if (ev_is_active (w)) 2043 if (expect_false (ev_is_active (w)))
889 return; 2044 return;
890 2045
891 ev_start ((W)w, ++idlecnt); 2046 ev_start (EV_A_ (W)w, 1);
892 array_needsize (idles, idlemax, idlecnt, ); 2047 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
893 idles [idlecnt - 1] = w;
894} 2048}
895 2049
896void evidle_stop (struct ev_idle *w) 2050void
2051ev_child_stop (EV_P_ ev_child *w)
897{ 2052{
898 ev_clear ((W)w); 2053 clear_pending (EV_A_ (W)w);
899 if (ev_is_active (w)) 2054 if (expect_false (!ev_is_active (w)))
900 return; 2055 return;
901 2056
902 idles [w->active - 1] = idles [--idlecnt]; 2057 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
903 ev_stop ((W)w); 2058 ev_stop (EV_A_ (W)w);
904} 2059}
905 2060
2061#if EV_STAT_ENABLE
2062
2063# ifdef _WIN32
2064# undef lstat
2065# define lstat(a,b) _stati64 (a,b)
2066# endif
2067
2068#define DEF_STAT_INTERVAL 5.0074891
2069#define MIN_STAT_INTERVAL 0.1074891
2070
2071static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2072
2073#if EV_USE_INOTIFY
2074# define EV_INOTIFY_BUFSIZE 8192
2075
2076static void noinline
2077infy_add (EV_P_ ev_stat *w)
2078{
2079 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);
2080
2081 if (w->wd < 0)
2082 {
2083 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2084
2085 /* monitor some parent directory for speedup hints */
2086 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2087 {
2088 char path [4096];
2089 strcpy (path, w->path);
2090
2091 do
2092 {
2093 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2094 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2095
2096 char *pend = strrchr (path, '/');
2097
2098 if (!pend)
2099 break; /* whoops, no '/', complain to your admin */
2100
2101 *pend = 0;
2102 w->wd = inotify_add_watch (fs_fd, path, mask);
2103 }
2104 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2105 }
2106 }
2107 else
2108 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2109
2110 if (w->wd >= 0)
2111 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2112}
2113
2114static void noinline
2115infy_del (EV_P_ ev_stat *w)
2116{
2117 int slot;
2118 int wd = w->wd;
2119
2120 if (wd < 0)
2121 return;
2122
2123 w->wd = -2;
2124 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2125 wlist_del (&fs_hash [slot].head, (WL)w);
2126
2127 /* remove this watcher, if others are watching it, they will rearm */
2128 inotify_rm_watch (fs_fd, wd);
2129}
2130
2131static void noinline
2132infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2133{
2134 if (slot < 0)
2135 /* overflow, need to check for all hahs slots */
2136 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2137 infy_wd (EV_A_ slot, wd, ev);
2138 else
2139 {
2140 WL w_;
2141
2142 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2143 {
2144 ev_stat *w = (ev_stat *)w_;
2145 w_ = w_->next; /* lets us remove this watcher and all before it */
2146
2147 if (w->wd == wd || wd == -1)
2148 {
2149 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2150 {
2151 w->wd = -1;
2152 infy_add (EV_A_ w); /* re-add, no matter what */
2153 }
2154
2155 stat_timer_cb (EV_A_ &w->timer, 0);
2156 }
2157 }
2158 }
2159}
2160
2161static void
2162infy_cb (EV_P_ ev_io *w, int revents)
2163{
2164 char buf [EV_INOTIFY_BUFSIZE];
2165 struct inotify_event *ev = (struct inotify_event *)buf;
2166 int ofs;
2167 int len = read (fs_fd, buf, sizeof (buf));
2168
2169 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2170 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2171}
2172
2173void inline_size
2174infy_init (EV_P)
2175{
2176 if (fs_fd != -2)
2177 return;
2178
2179 fs_fd = inotify_init ();
2180
2181 if (fs_fd >= 0)
2182 {
2183 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2184 ev_set_priority (&fs_w, EV_MAXPRI);
2185 ev_io_start (EV_A_ &fs_w);
2186 }
2187}
2188
2189void inline_size
2190infy_fork (EV_P)
2191{
2192 int slot;
2193
2194 if (fs_fd < 0)
2195 return;
2196
2197 close (fs_fd);
2198 fs_fd = inotify_init ();
2199
2200 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2201 {
2202 WL w_ = fs_hash [slot].head;
2203 fs_hash [slot].head = 0;
2204
2205 while (w_)
2206 {
2207 ev_stat *w = (ev_stat *)w_;
2208 w_ = w_->next; /* lets us add this watcher */
2209
2210 w->wd = -1;
2211
2212 if (fs_fd >= 0)
2213 infy_add (EV_A_ w); /* re-add, no matter what */
2214 else
2215 ev_timer_start (EV_A_ &w->timer);
2216 }
2217
2218 }
2219}
2220
2221#endif
2222
2223void
2224ev_stat_stat (EV_P_ ev_stat *w)
2225{
2226 if (lstat (w->path, &w->attr) < 0)
2227 w->attr.st_nlink = 0;
2228 else if (!w->attr.st_nlink)
2229 w->attr.st_nlink = 1;
2230}
2231
2232static void noinline
2233stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2234{
2235 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2236
2237 /* we copy this here each the time so that */
2238 /* prev has the old value when the callback gets invoked */
2239 w->prev = w->attr;
2240 ev_stat_stat (EV_A_ w);
2241
2242 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2243 if (
2244 w->prev.st_dev != w->attr.st_dev
2245 || w->prev.st_ino != w->attr.st_ino
2246 || w->prev.st_mode != w->attr.st_mode
2247 || w->prev.st_nlink != w->attr.st_nlink
2248 || w->prev.st_uid != w->attr.st_uid
2249 || w->prev.st_gid != w->attr.st_gid
2250 || w->prev.st_rdev != w->attr.st_rdev
2251 || w->prev.st_size != w->attr.st_size
2252 || w->prev.st_atime != w->attr.st_atime
2253 || w->prev.st_mtime != w->attr.st_mtime
2254 || w->prev.st_ctime != w->attr.st_ctime
2255 ) {
2256 #if EV_USE_INOTIFY
2257 infy_del (EV_A_ w);
2258 infy_add (EV_A_ w);
2259 ev_stat_stat (EV_A_ w); /* avoid race... */
2260 #endif
2261
2262 ev_feed_event (EV_A_ w, EV_STAT);
2263 }
2264}
2265
2266void
2267ev_stat_start (EV_P_ ev_stat *w)
2268{
2269 if (expect_false (ev_is_active (w)))
2270 return;
2271
2272 /* since we use memcmp, we need to clear any padding data etc. */
2273 memset (&w->prev, 0, sizeof (ev_statdata));
2274 memset (&w->attr, 0, sizeof (ev_statdata));
2275
2276 ev_stat_stat (EV_A_ w);
2277
2278 if (w->interval < MIN_STAT_INTERVAL)
2279 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2280
2281 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2282 ev_set_priority (&w->timer, ev_priority (w));
2283
2284#if EV_USE_INOTIFY
2285 infy_init (EV_A);
2286
2287 if (fs_fd >= 0)
2288 infy_add (EV_A_ w);
2289 else
2290#endif
2291 ev_timer_start (EV_A_ &w->timer);
2292
2293 ev_start (EV_A_ (W)w, 1);
2294}
2295
2296void
2297ev_stat_stop (EV_P_ ev_stat *w)
2298{
2299 clear_pending (EV_A_ (W)w);
2300 if (expect_false (!ev_is_active (w)))
2301 return;
2302
2303#if EV_USE_INOTIFY
2304 infy_del (EV_A_ w);
2305#endif
2306 ev_timer_stop (EV_A_ &w->timer);
2307
2308 ev_stop (EV_A_ (W)w);
2309}
2310#endif
2311
2312#if EV_IDLE_ENABLE
2313void
2314ev_idle_start (EV_P_ ev_idle *w)
2315{
2316 if (expect_false (ev_is_active (w)))
2317 return;
2318
2319 pri_adjust (EV_A_ (W)w);
2320
2321 {
2322 int active = ++idlecnt [ABSPRI (w)];
2323
2324 ++idleall;
2325 ev_start (EV_A_ (W)w, active);
2326
2327 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2328 idles [ABSPRI (w)][active - 1] = w;
2329 }
2330}
2331
2332void
2333ev_idle_stop (EV_P_ ev_idle *w)
2334{
2335 clear_pending (EV_A_ (W)w);
2336 if (expect_false (!ev_is_active (w)))
2337 return;
2338
2339 {
2340 int active = ((W)w)->active;
2341
2342 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2343 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2344
2345 ev_stop (EV_A_ (W)w);
2346 --idleall;
2347 }
2348}
2349#endif
2350
2351void
906void evprepare_start (struct ev_prepare *w) 2352ev_prepare_start (EV_P_ ev_prepare *w)
907{ 2353{
908 if (ev_is_active (w)) 2354 if (expect_false (ev_is_active (w)))
909 return; 2355 return;
910 2356
911 ev_start ((W)w, ++preparecnt); 2357 ev_start (EV_A_ (W)w, ++preparecnt);
912 array_needsize (prepares, preparemax, preparecnt, ); 2358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
913 prepares [preparecnt - 1] = w; 2359 prepares [preparecnt - 1] = w;
914} 2360}
915 2361
2362void
916void evprepare_stop (struct ev_prepare *w) 2363ev_prepare_stop (EV_P_ ev_prepare *w)
917{ 2364{
918 ev_clear ((W)w); 2365 clear_pending (EV_A_ (W)w);
919 if (ev_is_active (w)) 2366 if (expect_false (!ev_is_active (w)))
920 return; 2367 return;
921 2368
2369 {
2370 int active = ((W)w)->active;
922 prepares [w->active - 1] = prepares [--preparecnt]; 2371 prepares [active - 1] = prepares [--preparecnt];
2372 ((W)prepares [active - 1])->active = active;
2373 }
2374
923 ev_stop ((W)w); 2375 ev_stop (EV_A_ (W)w);
924} 2376}
925 2377
2378void
926void evcheck_start (struct ev_check *w) 2379ev_check_start (EV_P_ ev_check *w)
927{ 2380{
928 if (ev_is_active (w)) 2381 if (expect_false (ev_is_active (w)))
929 return; 2382 return;
930 2383
931 ev_start ((W)w, ++checkcnt); 2384 ev_start (EV_A_ (W)w, ++checkcnt);
932 array_needsize (checks, checkmax, checkcnt, ); 2385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
933 checks [checkcnt - 1] = w; 2386 checks [checkcnt - 1] = w;
934} 2387}
935 2388
2389void
936void evcheck_stop (struct ev_check *w) 2390ev_check_stop (EV_P_ ev_check *w)
937{ 2391{
938 ev_clear ((W)w); 2392 clear_pending (EV_A_ (W)w);
939 if (ev_is_active (w)) 2393 if (expect_false (!ev_is_active (w)))
940 return; 2394 return;
941 2395
2396 {
2397 int active = ((W)w)->active;
942 checks [w->active - 1] = checks [--checkcnt]; 2398 checks [active - 1] = checks [--checkcnt];
2399 ((W)checks [active - 1])->active = active;
2400 }
2401
943 ev_stop ((W)w); 2402 ev_stop (EV_A_ (W)w);
944} 2403}
945 2404
946void evchild_start (struct ev_child *w) 2405#if EV_EMBED_ENABLE
2406void noinline
2407ev_embed_sweep (EV_P_ ev_embed *w)
947{ 2408{
2409 ev_loop (w->other, EVLOOP_NONBLOCK);
2410}
2411
2412static void
2413embed_io_cb (EV_P_ ev_io *io, int revents)
2414{
2415 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2416
948 if (ev_is_active (w)) 2417 if (ev_cb (w))
949 return; 2418 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2419 else
2420 ev_loop (w->other, EVLOOP_NONBLOCK);
2421}
950 2422
2423static void
2424embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2425{
2426 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2427
2428 {
2429 struct ev_loop *loop = w->other;
2430
2431 while (fdchangecnt)
2432 {
2433 fd_reify (EV_A);
2434 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2435 }
2436 }
2437}
2438
2439#if 0
2440static void
2441embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2442{
2443 ev_idle_stop (EV_A_ idle);
2444}
2445#endif
2446
2447void
2448ev_embed_start (EV_P_ ev_embed *w)
2449{
2450 if (expect_false (ev_is_active (w)))
2451 return;
2452
2453 {
2454 struct ev_loop *loop = w->other;
2455 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2456 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2457 }
2458
2459 ev_set_priority (&w->io, ev_priority (w));
2460 ev_io_start (EV_A_ &w->io);
2461
2462 ev_prepare_init (&w->prepare, embed_prepare_cb);
2463 ev_set_priority (&w->prepare, EV_MINPRI);
2464 ev_prepare_start (EV_A_ &w->prepare);
2465
2466 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2467
951 ev_start ((W)w, 1); 2468 ev_start (EV_A_ (W)w, 1);
952 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953} 2469}
954 2470
955void evchild_stop (struct ev_child *w) 2471void
2472ev_embed_stop (EV_P_ ev_embed *w)
956{ 2473{
957 ev_clear ((W)w); 2474 clear_pending (EV_A_ (W)w);
958 if (ev_is_active (w)) 2475 if (expect_false (!ev_is_active (w)))
959 return; 2476 return;
960 2477
961 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2478 ev_io_stop (EV_A_ &w->io);
2479 ev_prepare_stop (EV_A_ &w->prepare);
2480
962 ev_stop ((W)w); 2481 ev_stop (EV_A_ (W)w);
963} 2482}
2483#endif
2484
2485#if EV_FORK_ENABLE
2486void
2487ev_fork_start (EV_P_ ev_fork *w)
2488{
2489 if (expect_false (ev_is_active (w)))
2490 return;
2491
2492 ev_start (EV_A_ (W)w, ++forkcnt);
2493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2494 forks [forkcnt - 1] = w;
2495}
2496
2497void
2498ev_fork_stop (EV_P_ ev_fork *w)
2499{
2500 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w)))
2502 return;
2503
2504 {
2505 int active = ((W)w)->active;
2506 forks [active - 1] = forks [--forkcnt];
2507 ((W)forks [active - 1])->active = active;
2508 }
2509
2510 ev_stop (EV_A_ (W)w);
2511}
2512#endif
2513
2514#if EV_ASYNC_ENABLE
2515void
2516ev_async_start (EV_P_ ev_async *w)
2517{
2518 if (expect_false (ev_is_active (w)))
2519 return;
2520
2521 evpipe_init (EV_A);
2522
2523 ev_start (EV_A_ (W)w, ++asynccnt);
2524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2525 asyncs [asynccnt - 1] = w;
2526}
2527
2528void
2529ev_async_stop (EV_P_ ev_async *w)
2530{
2531 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w)))
2533 return;
2534
2535 {
2536 int active = ((W)w)->active;
2537 asyncs [active - 1] = asyncs [--asynccnt];
2538 ((W)asyncs [active - 1])->active = active;
2539 }
2540
2541 ev_stop (EV_A_ (W)w);
2542}
2543
2544void
2545ev_async_send (EV_P_ ev_async *w)
2546{
2547 w->sent = 1;
2548 evpipe_write (EV_A_ &gotasync);
2549}
2550#endif
964 2551
965/*****************************************************************************/ 2552/*****************************************************************************/
966 2553
967struct ev_once 2554struct ev_once
968{ 2555{
969 struct ev_io io; 2556 ev_io io;
970 struct ev_timer to; 2557 ev_timer to;
971 void (*cb)(int revents, void *arg); 2558 void (*cb)(int revents, void *arg);
972 void *arg; 2559 void *arg;
973}; 2560};
974 2561
975static void 2562static void
976once_cb (struct ev_once *once, int revents) 2563once_cb (EV_P_ struct ev_once *once, int revents)
977{ 2564{
978 void (*cb)(int revents, void *arg) = once->cb; 2565 void (*cb)(int revents, void *arg) = once->cb;
979 void *arg = once->arg; 2566 void *arg = once->arg;
980 2567
981 evio_stop (&once->io); 2568 ev_io_stop (EV_A_ &once->io);
982 evtimer_stop (&once->to); 2569 ev_timer_stop (EV_A_ &once->to);
983 free (once); 2570 ev_free (once);
984 2571
985 cb (revents, arg); 2572 cb (revents, arg);
986} 2573}
987 2574
988static void 2575static void
989once_cb_io (struct ev_io *w, int revents) 2576once_cb_io (EV_P_ ev_io *w, int revents)
990{ 2577{
991 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2578 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
992} 2579}
993 2580
994static void 2581static void
995once_cb_to (struct ev_timer *w, int revents) 2582once_cb_to (EV_P_ ev_timer *w, int revents)
996{ 2583{
997 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
998} 2585}
999 2586
1000void 2587void
1001ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2588ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1002{ 2589{
1003 struct ev_once *once = malloc (sizeof (struct ev_once)); 2590 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1004 2591
1005 if (!once) 2592 if (expect_false (!once))
1006 cb (EV_ERROR, arg); 2593 {
1007 else 2594 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2595 return;
1008 { 2596 }
2597
1009 once->cb = cb; 2598 once->cb = cb;
1010 once->arg = arg; 2599 once->arg = arg;
1011 2600
1012 evw_init (&once->io, once_cb_io); 2601 ev_init (&once->io, once_cb_io);
1013
1014 if (fd >= 0) 2602 if (fd >= 0)
1015 { 2603 {
1016 evio_set (&once->io, fd, events); 2604 ev_io_set (&once->io, fd, events);
1017 evio_start (&once->io); 2605 ev_io_start (EV_A_ &once->io);
1018 } 2606 }
1019 2607
1020 evw_init (&once->to, once_cb_to); 2608 ev_init (&once->to, once_cb_to);
1021
1022 if (timeout >= 0.) 2609 if (timeout >= 0.)
1023 { 2610 {
1024 evtimer_set (&once->to, timeout, 0.); 2611 ev_timer_set (&once->to, timeout, 0.);
1025 evtimer_start (&once->to); 2612 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 { 2613 }
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} 2614}
1107 2615
2616#if EV_MULTIPLICITY
2617 #include "ev_wrap.h"
1108#endif 2618#endif
1109 2619
2620#ifdef __cplusplus
2621}
2622#endif
1110 2623
1111
1112

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