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Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.227 by root, Fri May 2 07:20:01 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE
31#if EV_USE_CONFIG_H 46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 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
33#endif 132#endif
34 133
35#include <math.h> 134#include <math.h>
36#include <stdlib.h> 135#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 136#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 137#include <stddef.h>
41 138
42#include <stdio.h> 139#include <stdio.h>
43 140
44#include <assert.h> 141#include <assert.h>
45#include <errno.h> 142#include <errno.h>
46#include <sys/types.h> 143#include <sys/types.h>
47#include <sys/wait.h>
48#include <sys/time.h>
49#include <time.h> 144#include <time.h>
50 145
51/**/ 146#include <signal.h>
147
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
163# endif
164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
52 167
53#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 169# 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
55#endif 178#endif
56 179
57#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
58# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
59#endif 182#endif
60 183
184#ifndef EV_USE_POLL
185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
190#endif
191
61#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
62# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
63#endif 197# endif
198#endif
64 199
200#ifndef EV_USE_KQUEUE
201# define EV_USE_KQUEUE 0
202#endif
203
65#ifndef EV_USE_REALTIME 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))
66# define EV_USE_REALTIME 1 210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
67#endif 213# endif
214#endif
68 215
69/**/ 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 */
70 241
71#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
72# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
74#endif 245#endif
… …
76#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
77# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
79#endif 250#endif
80 251
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>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
281#endif
282
81/**/ 283/**/
82 284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294
83#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
84#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
85#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
86/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
87 298
88#include "ev.h"
89
90#if __GNUC__ >= 3 299#if __GNUC__ >= 4
91# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
92# define inline inline 301# define noinline __attribute__ ((noinline))
93#else 302#else
94# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
95# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
96#endif 308#endif
97 309
98#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
100 313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
322
323#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */
325
101typedef struct ev_watcher *W; 326typedef ev_watcher *W;
102typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
103typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
104 329
105static ev_tstamp now_floor, now, diff; /* monotonic clock */ 330#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
333static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
334#endif
335
336#ifdef _WIN32
337# include "ev_win32.c"
338#endif
339
340/*****************************************************************************/
341
342static void (*syserr_cb)(const char *msg);
343
344void
345ev_set_syserr_cb (void (*cb)(const char *msg))
346{
347 syserr_cb = cb;
348}
349
350static void noinline
351syserr (const char *msg)
352{
353 if (!msg)
354 msg = "(libev) system error";
355
356 if (syserr_cb)
357 syserr_cb (msg);
358 else
359 {
360 perror (msg);
361 abort ();
362 }
363}
364
365static void *
366ev_realloc_emul (void *ptr, long size)
367{
368 /* some systems, notably openbsd and darwin, fail to properly
369 * implement realloc (x, 0) (as required by both ansi c-98 and
370 * the single unix specification, so work around them here.
371 */
372
373 if (size)
374 return realloc (ptr, size);
375
376 free (ptr);
377 return 0;
378}
379
380static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
381
382void
383ev_set_allocator (void *(*cb)(void *ptr, long size))
384{
385 alloc = cb;
386}
387
388inline_speed void *
389ev_realloc (void *ptr, long size)
390{
391 ptr = alloc (ptr, size);
392
393 if (!ptr && size)
394 {
395 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
396 abort ();
397 }
398
399 return ptr;
400}
401
402#define ev_malloc(size) ev_realloc (0, (size))
403#define ev_free(ptr) ev_realloc ((ptr), 0)
404
405/*****************************************************************************/
406
407typedef struct
408{
409 WL head;
410 unsigned char events;
411 unsigned char reify;
412#if EV_SELECT_IS_WINSOCKET
413 SOCKET handle;
414#endif
415} ANFD;
416
417typedef struct
418{
419 W w;
420 int events;
421} ANPENDING;
422
423#if EV_USE_INOTIFY
424typedef struct
425{
426 WL head;
427} ANFS;
428#endif
429
430#if EV_MULTIPLICITY
431
432 struct ev_loop
433 {
434 ev_tstamp ev_rt_now;
435 #define ev_rt_now ((loop)->ev_rt_now)
436 #define VAR(name,decl) decl;
437 #include "ev_vars.h"
438 #undef VAR
439 };
440 #include "ev_wrap.h"
441
442 static struct ev_loop default_loop_struct;
443 struct ev_loop *ev_default_loop_ptr;
444
445#else
446
106ev_tstamp ev_now; 447 ev_tstamp ev_rt_now;
107int ev_method; 448 #define VAR(name,decl) static decl;
449 #include "ev_vars.h"
450 #undef VAR
108 451
109static int have_monotonic; /* runtime */ 452 static int ev_default_loop_ptr;
110 453
111static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 454#endif
112static void (*method_modify)(int fd, int oev, int nev);
113static void (*method_poll)(ev_tstamp timeout);
114 455
115/*****************************************************************************/ 456/*****************************************************************************/
116 457
117ev_tstamp 458ev_tstamp
118ev_time (void) 459ev_time (void)
… …
126 gettimeofday (&tv, 0); 467 gettimeofday (&tv, 0);
127 return tv.tv_sec + tv.tv_usec * 1e-6; 468 return tv.tv_sec + tv.tv_usec * 1e-6;
128#endif 469#endif
129} 470}
130 471
131static ev_tstamp 472ev_tstamp inline_size
132get_clock (void) 473get_clock (void)
133{ 474{
134#if EV_USE_MONOTONIC 475#if EV_USE_MONOTONIC
135 if (expect_true (have_monotonic)) 476 if (expect_true (have_monotonic))
136 { 477 {
… …
141#endif 482#endif
142 483
143 return ev_time (); 484 return ev_time ();
144} 485}
145 486
146#define array_roundsize(base,n) ((n) | 4 & ~3) 487#if EV_MULTIPLICITY
488ev_tstamp
489ev_now (EV_P)
490{
491 return ev_rt_now;
492}
493#endif
147 494
148#define array_needsize(base,cur,cnt,init) \ 495void
149 if (expect_false ((cnt) > cur)) \ 496ev_sleep (ev_tstamp delay)
150 { \ 497{
151 int newcnt = cur; \ 498 if (delay > 0.)
152 do \
153 { \
154 newcnt = array_roundsize (base, newcnt << 1); \
155 } \
156 while ((cnt) > newcnt); \
157 \
158 base = realloc (base, sizeof (*base) * (newcnt)); \
159 init (base + cur, newcnt - cur); \
160 cur = newcnt; \
161 } 499 {
500#if EV_USE_NANOSLEEP
501 struct timespec ts;
502
503 ts.tv_sec = (time_t)delay;
504 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
505
506 nanosleep (&ts, 0);
507#elif defined(_WIN32)
508 Sleep ((unsigned long)(delay * 1e3));
509#else
510 struct timeval tv;
511
512 tv.tv_sec = (time_t)delay;
513 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
514
515 select (0, 0, 0, 0, &tv);
516#endif
517 }
518}
162 519
163/*****************************************************************************/ 520/*****************************************************************************/
164 521
165typedef struct 522int inline_size
523array_nextsize (int elem, int cur, int cnt)
166{ 524{
167 struct ev_io *head; 525 int ncur = cur + 1;
168 unsigned char events;
169 unsigned char reify;
170} ANFD;
171 526
172static ANFD *anfds; 527 do
173static int anfdmax; 528 ncur <<= 1;
529 while (cnt > ncur);
174 530
175static void 531 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
532 if (elem * ncur > 4096)
533 {
534 ncur *= elem;
535 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
536 ncur = ncur - sizeof (void *) * 4;
537 ncur /= elem;
538 }
539
540 return ncur;
541}
542
543static noinline void *
544array_realloc (int elem, void *base, int *cur, int cnt)
545{
546 *cur = array_nextsize (elem, *cur, cnt);
547 return ev_realloc (base, elem * *cur);
548}
549
550#define array_needsize(type,base,cur,cnt,init) \
551 if (expect_false ((cnt) > (cur))) \
552 { \
553 int ocur_ = (cur); \
554 (base) = (type *)array_realloc \
555 (sizeof (type), (base), &(cur), (cnt)); \
556 init ((base) + (ocur_), (cur) - ocur_); \
557 }
558
559#if 0
560#define array_slim(type,stem) \
561 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
562 { \
563 stem ## max = array_roundsize (stem ## cnt >> 1); \
564 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
565 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566 }
567#endif
568
569#define array_free(stem, idx) \
570 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
571
572/*****************************************************************************/
573
574void noinline
575ev_feed_event (EV_P_ void *w, int revents)
576{
577 W w_ = (W)w;
578 int pri = ABSPRI (w_);
579
580 if (expect_false (w_->pending))
581 pendings [pri][w_->pending - 1].events |= revents;
582 else
583 {
584 w_->pending = ++pendingcnt [pri];
585 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
586 pendings [pri][w_->pending - 1].w = w_;
587 pendings [pri][w_->pending - 1].events = revents;
588 }
589}
590
591void inline_speed
592queue_events (EV_P_ W *events, int eventcnt, int type)
593{
594 int i;
595
596 for (i = 0; i < eventcnt; ++i)
597 ev_feed_event (EV_A_ events [i], type);
598}
599
600/*****************************************************************************/
601
602void inline_size
176anfds_init (ANFD *base, int count) 603anfds_init (ANFD *base, int count)
177{ 604{
178 while (count--) 605 while (count--)
179 { 606 {
180 base->head = 0; 607 base->head = 0;
… …
183 610
184 ++base; 611 ++base;
185 } 612 }
186} 613}
187 614
188typedef struct 615void inline_speed
189{
190 W w;
191 int events;
192} ANPENDING;
193
194static ANPENDING *pendings;
195static int pendingmax, pendingcnt;
196
197static void
198event (W w, int events)
199{
200 if (w->pending)
201 {
202 pendings [w->pending - 1].events |= events;
203 return;
204 }
205
206 w->pending = ++pendingcnt;
207 array_needsize (pendings, pendingmax, pendingcnt, );
208 pendings [pendingcnt - 1].w = w;
209 pendings [pendingcnt - 1].events = events;
210}
211
212static void
213queue_events (W *events, int eventcnt, int type)
214{
215 int i;
216
217 for (i = 0; i < eventcnt; ++i)
218 event (events [i], type);
219}
220
221static void
222fd_event (int fd, int events) 616fd_event (EV_P_ int fd, int revents)
223{ 617{
224 ANFD *anfd = anfds + fd; 618 ANFD *anfd = anfds + fd;
225 struct ev_io *w; 619 ev_io *w;
226 620
227 for (w = anfd->head; w; w = w->next) 621 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
228 { 622 {
229 int ev = w->events & events; 623 int ev = w->events & revents;
230 624
231 if (ev) 625 if (ev)
232 event ((W)w, ev); 626 ev_feed_event (EV_A_ (W)w, ev);
233 } 627 }
234} 628}
235 629
236/*****************************************************************************/ 630void
631ev_feed_fd_event (EV_P_ int fd, int revents)
632{
633 if (fd >= 0 && fd < anfdmax)
634 fd_event (EV_A_ fd, revents);
635}
237 636
238static int *fdchanges; 637void inline_size
239static int fdchangemax, fdchangecnt; 638fd_reify (EV_P)
240
241static void
242fd_reify (void)
243{ 639{
244 int i; 640 int i;
245 641
246 for (i = 0; i < fdchangecnt; ++i) 642 for (i = 0; i < fdchangecnt; ++i)
247 { 643 {
248 int fd = fdchanges [i]; 644 int fd = fdchanges [i];
249 ANFD *anfd = anfds + fd; 645 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 646 ev_io *w;
251 647
252 int events = 0; 648 unsigned char events = 0;
253 649
254 for (w = anfd->head; w; w = w->next) 650 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
255 events |= w->events; 651 events |= (unsigned char)w->events;
256 652
257 anfd->reify = 0; 653#if EV_SELECT_IS_WINSOCKET
258 654 if (events)
259 if (anfd->events != events)
260 { 655 {
261 method_modify (fd, anfd->events, events); 656 unsigned long argp;
262 anfd->events = events; 657 #ifdef EV_FD_TO_WIN32_HANDLE
658 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
659 #else
660 anfd->handle = _get_osfhandle (fd);
661 #endif
662 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
263 } 663 }
664#endif
665
666 {
667 unsigned char o_events = anfd->events;
668 unsigned char o_reify = anfd->reify;
669
670 anfd->reify = 0;
671 anfd->events = events;
672
673 if (o_events != events || o_reify & EV_IOFDSET)
674 backend_modify (EV_A_ fd, o_events, events);
675 }
264 } 676 }
265 677
266 fdchangecnt = 0; 678 fdchangecnt = 0;
267} 679}
268 680
269static void 681void inline_size
270fd_change (int fd) 682fd_change (EV_P_ int fd, int flags)
271{ 683{
272 if (anfds [fd].reify || fdchangecnt < 0) 684 unsigned char reify = anfds [fd].reify;
273 return;
274
275 anfds [fd].reify = 1; 685 anfds [fd].reify |= flags;
276 686
687 if (expect_true (!reify))
688 {
277 ++fdchangecnt; 689 ++fdchangecnt;
278 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 690 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
279 fdchanges [fdchangecnt - 1] = fd; 691 fdchanges [fdchangecnt - 1] = fd;
692 }
693}
694
695void inline_speed
696fd_kill (EV_P_ int fd)
697{
698 ev_io *w;
699
700 while ((w = (ev_io *)anfds [fd].head))
701 {
702 ev_io_stop (EV_A_ w);
703 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
704 }
705}
706
707int inline_size
708fd_valid (int fd)
709{
710#ifdef _WIN32
711 return _get_osfhandle (fd) != -1;
712#else
713 return fcntl (fd, F_GETFD) != -1;
714#endif
280} 715}
281 716
282/* called on EBADF to verify fds */ 717/* called on EBADF to verify fds */
283static void 718static void noinline
284fd_recheck (void) 719fd_ebadf (EV_P)
285{ 720{
286 int fd; 721 int fd;
287 722
288 for (fd = 0; fd < anfdmax; ++fd) 723 for (fd = 0; fd < anfdmax; ++fd)
289 if (anfds [fd].events) 724 if (anfds [fd].events)
290 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 725 if (!fd_valid (fd) == -1 && errno == EBADF)
291 while (anfds [fd].head) 726 fd_kill (EV_A_ fd);
727}
728
729/* called on ENOMEM in select/poll to kill some fds and retry */
730static void noinline
731fd_enomem (EV_P)
732{
733 int fd;
734
735 for (fd = anfdmax; fd--; )
736 if (anfds [fd].events)
292 { 737 {
293 ev_io_stop (anfds [fd].head); 738 fd_kill (EV_A_ fd);
294 event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); 739 return;
295 } 740 }
741}
742
743/* usually called after fork if backend needs to re-arm all fds from scratch */
744static void noinline
745fd_rearm_all (EV_P)
746{
747 int fd;
748
749 for (fd = 0; fd < anfdmax; ++fd)
750 if (anfds [fd].events)
751 {
752 anfds [fd].events = 0;
753 fd_change (EV_A_ fd, EV_IOFDSET | 1);
754 }
296} 755}
297 756
298/*****************************************************************************/ 757/*****************************************************************************/
299 758
300static struct ev_timer **timers; 759/* towards the root */
301static int timermax, timercnt; 760void inline_speed
302
303static struct ev_periodic **periodics;
304static int periodicmax, periodiccnt;
305
306static void
307upheap (WT *timers, int k) 761upheap (WT *heap, int k)
308{ 762{
309 WT w = timers [k]; 763 WT w = heap [k];
310 764
311 while (k && timers [k >> 1]->at > w->at) 765 while (k)
312 {
313 timers [k] = timers [k >> 1];
314 timers [k]->active = k + 1;
315 k >>= 1;
316 } 766 {
317
318 timers [k] = w;
319 timers [k]->active = k + 1;
320
321}
322
323static void
324downheap (WT *timers, int N, int k)
325{
326 WT w = timers [k];
327
328 while (k < (N >> 1))
329 {
330 int j = k << 1; 767 int p = (k - 1) >> 1;
331 768
332 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 769 if (heap [p]->at <= w->at)
333 ++j;
334
335 if (w->at <= timers [j]->at)
336 break; 770 break;
337 771
338 timers [k] = timers [j]; 772 heap [k] = heap [p];
339 timers [k]->active = k + 1; 773 ((W)heap [k])->active = k + 1;
340 k = j; 774 k = p;
775 }
776
777 heap [k] = w;
778 ((W)heap [k])->active = k + 1;
779}
780
781/* away from the root */
782void inline_speed
783downheap (WT *heap, int N, int k)
784{
785 WT w = heap [k];
786
787 for (;;)
341 } 788 {
789 int c = (k << 1) + 1;
342 790
791 if (c >= N)
792 break;
793
794 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
795 ? 1 : 0;
796
797 if (w->at <= heap [c]->at)
798 break;
799
800 heap [k] = heap [c];
801 ((W)heap [k])->active = k + 1;
802
803 k = c;
804 }
805
343 timers [k] = w; 806 heap [k] = w;
344 timers [k]->active = k + 1; 807 ((W)heap [k])->active = k + 1;
808}
809
810void inline_size
811adjustheap (WT *heap, int N, int k)
812{
813 upheap (heap, k);
814 downheap (heap, N, k);
345} 815}
346 816
347/*****************************************************************************/ 817/*****************************************************************************/
348 818
349typedef struct 819typedef struct
350{ 820{
351 struct ev_signal *head; 821 WL head;
352 sig_atomic_t volatile gotsig; 822 EV_ATOMIC_T gotsig;
353} ANSIG; 823} ANSIG;
354 824
355static ANSIG *signals; 825static ANSIG *signals;
356static int signalmax; 826static int signalmax;
357 827
358static int sigpipe [2]; 828static EV_ATOMIC_T gotsig;
359static sig_atomic_t volatile gotsig;
360static struct ev_io sigev;
361 829
362static void 830void inline_size
363signals_init (ANSIG *base, int count) 831signals_init (ANSIG *base, int count)
364{ 832{
365 while (count--) 833 while (count--)
366 { 834 {
367 base->head = 0; 835 base->head = 0;
… …
369 837
370 ++base; 838 ++base;
371 } 839 }
372} 840}
373 841
842/*****************************************************************************/
843
844void inline_speed
845fd_intern (int fd)
846{
847#ifdef _WIN32
848 int arg = 1;
849 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
850#else
851 fcntl (fd, F_SETFD, FD_CLOEXEC);
852 fcntl (fd, F_SETFL, O_NONBLOCK);
853#endif
854}
855
856static void noinline
857evpipe_init (EV_P)
858{
859 if (!ev_is_active (&pipeev))
860 {
861#if EV_USE_EVENTFD
862 if ((evfd = eventfd (0, 0)) >= 0)
863 {
864 evpipe [0] = -1;
865 fd_intern (evfd);
866 ev_io_set (&pipeev, evfd, EV_READ);
867 }
868 else
869#endif
870 {
871 while (pipe (evpipe))
872 syserr ("(libev) error creating signal/async pipe");
873
874 fd_intern (evpipe [0]);
875 fd_intern (evpipe [1]);
876 ev_io_set (&pipeev, evpipe [0], EV_READ);
877 }
878
879 ev_io_start (EV_A_ &pipeev);
880 ev_unref (EV_A); /* watcher should not keep loop alive */
881 }
882}
883
884void inline_size
885evpipe_write (EV_P_ EV_ATOMIC_T *flag)
886{
887 if (!*flag)
888 {
889 int old_errno = errno; /* save errno because write might clobber it */
890
891 *flag = 1;
892
893#if EV_USE_EVENTFD
894 if (evfd >= 0)
895 {
896 uint64_t counter = 1;
897 write (evfd, &counter, sizeof (uint64_t));
898 }
899 else
900#endif
901 write (evpipe [1], &old_errno, 1);
902
903 errno = old_errno;
904 }
905}
906
374static void 907static void
908pipecb (EV_P_ ev_io *iow, int revents)
909{
910#if EV_USE_EVENTFD
911 if (evfd >= 0)
912 {
913 uint64_t counter = 1;
914 read (evfd, &counter, sizeof (uint64_t));
915 }
916 else
917#endif
918 {
919 char dummy;
920 read (evpipe [0], &dummy, 1);
921 }
922
923 if (gotsig && ev_is_default_loop (EV_A))
924 {
925 int signum;
926 gotsig = 0;
927
928 for (signum = signalmax; signum--; )
929 if (signals [signum].gotsig)
930 ev_feed_signal_event (EV_A_ signum + 1);
931 }
932
933#if EV_ASYNC_ENABLE
934 if (gotasync)
935 {
936 int i;
937 gotasync = 0;
938
939 for (i = asynccnt; i--; )
940 if (asyncs [i]->sent)
941 {
942 asyncs [i]->sent = 0;
943 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
944 }
945 }
946#endif
947}
948
949/*****************************************************************************/
950
951static void
375sighandler (int signum) 952ev_sighandler (int signum)
376{ 953{
954#if EV_MULTIPLICITY
955 struct ev_loop *loop = &default_loop_struct;
956#endif
957
958#if _WIN32
959 signal (signum, ev_sighandler);
960#endif
961
377 signals [signum - 1].gotsig = 1; 962 signals [signum - 1].gotsig = 1;
378 963 evpipe_write (EV_A_ &gotsig);
379 if (!gotsig)
380 {
381 gotsig = 1;
382 write (sigpipe [1], &signum, 1);
383 }
384} 964}
385 965
386static void 966void noinline
387sigcb (struct ev_io *iow, int revents) 967ev_feed_signal_event (EV_P_ int signum)
388{ 968{
389 struct ev_signal *w; 969 WL w;
970
971#if EV_MULTIPLICITY
972 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
973#endif
974
390 int signum; 975 --signum;
391 976
392 read (sigpipe [0], &revents, 1); 977 if (signum < 0 || signum >= signalmax)
393 gotsig = 0; 978 return;
394 979
395 for (signum = signalmax; signum--; )
396 if (signals [signum].gotsig)
397 {
398 signals [signum].gotsig = 0; 980 signals [signum].gotsig = 0;
399 981
400 for (w = signals [signum].head; w; w = w->next) 982 for (w = signals [signum].head; w; w = w->next)
401 event ((W)w, EV_SIGNAL); 983 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
402 }
403}
404
405static void
406siginit (void)
407{
408 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410
411 /* rather than sort out wether we really need nb, set it */
412 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
414
415 ev_io_set (&sigev, sigpipe [0], EV_READ);
416 ev_io_start (&sigev);
417} 984}
418 985
419/*****************************************************************************/ 986/*****************************************************************************/
420 987
421static struct ev_idle **idles; 988static WL childs [EV_PID_HASHSIZE];
422static int idlemax, idlecnt;
423 989
424static struct ev_prepare **prepares; 990#ifndef _WIN32
425static int preparemax, preparecnt;
426 991
427static struct ev_check **checks;
428static int checkmax, checkcnt;
429
430/*****************************************************************************/
431
432static struct ev_child *childs [PID_HASHSIZE];
433static struct ev_signal childev; 992static ev_signal childev;
993
994#ifndef WIFCONTINUED
995# define WIFCONTINUED(status) 0
996#endif
997
998void inline_speed
999child_reap (EV_P_ int chain, int pid, int status)
1000{
1001 ev_child *w;
1002 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1003
1004 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1005 {
1006 if ((w->pid == pid || !w->pid)
1007 && (!traced || (w->flags & 1)))
1008 {
1009 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1010 w->rpid = pid;
1011 w->rstatus = status;
1012 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1013 }
1014 }
1015}
434 1016
435#ifndef WCONTINUED 1017#ifndef WCONTINUED
436# define WCONTINUED 0 1018# define WCONTINUED 0
437#endif 1019#endif
438 1020
439static void 1021static void
440childcb (struct ev_signal *sw, int revents) 1022childcb (EV_P_ ev_signal *sw, int revents)
441{ 1023{
442 struct ev_child *w;
443 int pid, status; 1024 int pid, status;
444 1025
1026 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
445 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 1027 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 1028 if (!WCONTINUED
447 if (w->pid == pid || !w->pid) 1029 || errno != EINVAL
448 { 1030 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
449 w->status = status; 1031 return;
450 event ((W)w, EV_CHILD); 1032
451 } 1033 /* make sure we are called again until all children have been reaped */
1034 /* we need to do it this way so that the callback gets called before we continue */
1035 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1036
1037 child_reap (EV_A_ pid, pid, status);
1038 if (EV_PID_HASHSIZE > 1)
1039 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
452} 1040}
1041
1042#endif
453 1043
454/*****************************************************************************/ 1044/*****************************************************************************/
455 1045
1046#if EV_USE_PORT
1047# include "ev_port.c"
1048#endif
1049#if EV_USE_KQUEUE
1050# include "ev_kqueue.c"
1051#endif
456#if EV_USE_EPOLL 1052#if EV_USE_EPOLL
457# include "ev_epoll.c" 1053# include "ev_epoll.c"
458#endif 1054#endif
1055#if EV_USE_POLL
1056# include "ev_poll.c"
1057#endif
459#if EV_USE_SELECT 1058#if EV_USE_SELECT
460# include "ev_select.c" 1059# include "ev_select.c"
461#endif 1060#endif
462 1061
463int 1062int
… …
470ev_version_minor (void) 1069ev_version_minor (void)
471{ 1070{
472 return EV_VERSION_MINOR; 1071 return EV_VERSION_MINOR;
473} 1072}
474 1073
475int ev_init (int flags) 1074/* return true if we are running with elevated privileges and should ignore env variables */
1075int inline_size
1076enable_secure (void)
476{ 1077{
477 if (!ev_method) 1078#ifdef _WIN32
1079 return 0;
1080#else
1081 return getuid () != geteuid ()
1082 || getgid () != getegid ();
1083#endif
1084}
1085
1086unsigned int
1087ev_supported_backends (void)
1088{
1089 unsigned int flags = 0;
1090
1091 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1092 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1093 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1094 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1095 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1096
1097 return flags;
1098}
1099
1100unsigned int
1101ev_recommended_backends (void)
1102{
1103 unsigned int flags = ev_supported_backends ();
1104
1105#ifndef __NetBSD__
1106 /* kqueue is borked on everything but netbsd apparently */
1107 /* it usually doesn't work correctly on anything but sockets and pipes */
1108 flags &= ~EVBACKEND_KQUEUE;
1109#endif
1110#ifdef __APPLE__
1111 // flags &= ~EVBACKEND_KQUEUE; for documentation
1112 flags &= ~EVBACKEND_POLL;
1113#endif
1114
1115 return flags;
1116}
1117
1118unsigned int
1119ev_embeddable_backends (void)
1120{
1121 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1122
1123 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1124 /* please fix it and tell me how to detect the fix */
1125 flags &= ~EVBACKEND_EPOLL;
1126
1127 return flags;
1128}
1129
1130unsigned int
1131ev_backend (EV_P)
1132{
1133 return backend;
1134}
1135
1136unsigned int
1137ev_loop_count (EV_P)
1138{
1139 return loop_count;
1140}
1141
1142void
1143ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1144{
1145 io_blocktime = interval;
1146}
1147
1148void
1149ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1150{
1151 timeout_blocktime = interval;
1152}
1153
1154static void noinline
1155loop_init (EV_P_ unsigned int flags)
1156{
1157 if (!backend)
478 { 1158 {
479#if EV_USE_MONOTONIC 1159#if EV_USE_MONOTONIC
480 { 1160 {
481 struct timespec ts; 1161 struct timespec ts;
482 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1162 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483 have_monotonic = 1; 1163 have_monotonic = 1;
484 } 1164 }
485#endif 1165#endif
486 1166
487 ev_now = ev_time (); 1167 ev_rt_now = ev_time ();
488 now = get_clock (); 1168 mn_now = get_clock ();
489 now_floor = now; 1169 now_floor = mn_now;
490 diff = ev_now - now; 1170 rtmn_diff = ev_rt_now - mn_now;
491 1171
492 if (pipe (sigpipe)) 1172 io_blocktime = 0.;
493 return 0; 1173 timeout_blocktime = 0.;
1174 backend = 0;
1175 backend_fd = -1;
1176 gotasync = 0;
1177#if EV_USE_INOTIFY
1178 fs_fd = -2;
1179#endif
494 1180
495 ev_method = EVMETHOD_NONE; 1181 /* pid check not overridable via env */
1182#ifndef _WIN32
1183 if (flags & EVFLAG_FORKCHECK)
1184 curpid = getpid ();
1185#endif
1186
1187 if (!(flags & EVFLAG_NOENV)
1188 && !enable_secure ()
1189 && getenv ("LIBEV_FLAGS"))
1190 flags = atoi (getenv ("LIBEV_FLAGS"));
1191
1192 if (!(flags & 0x0000ffffU))
1193 flags |= ev_recommended_backends ();
1194
1195#if EV_USE_PORT
1196 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1197#endif
1198#if EV_USE_KQUEUE
1199 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1200#endif
496#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
497 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1202 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1203#endif
1204#if EV_USE_POLL
1205 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
498#endif 1206#endif
499#if EV_USE_SELECT 1207#if EV_USE_SELECT
500 if (ev_method == EVMETHOD_NONE) select_init (flags); 1208 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
501#endif 1209#endif
502 1210
503 if (ev_method) 1211 ev_init (&pipeev, pipecb);
1212 ev_set_priority (&pipeev, EV_MAXPRI);
1213 }
1214}
1215
1216static void noinline
1217loop_destroy (EV_P)
1218{
1219 int i;
1220
1221 if (ev_is_active (&pipeev))
1222 {
1223 ev_ref (EV_A); /* signal watcher */
1224 ev_io_stop (EV_A_ &pipeev);
1225
1226#if EV_USE_EVENTFD
1227 if (evfd >= 0)
1228 close (evfd);
1229#endif
1230
1231 if (evpipe [0] >= 0)
504 { 1232 {
505 ev_watcher_init (&sigev, sigcb); 1233 close (evpipe [0]);
506 siginit (); 1234 close (evpipe [1]);
1235 }
1236 }
507 1237
1238#if EV_USE_INOTIFY
1239 if (fs_fd >= 0)
1240 close (fs_fd);
1241#endif
1242
1243 if (backend_fd >= 0)
1244 close (backend_fd);
1245
1246#if EV_USE_PORT
1247 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1248#endif
1249#if EV_USE_KQUEUE
1250 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1251#endif
1252#if EV_USE_EPOLL
1253 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1254#endif
1255#if EV_USE_POLL
1256 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1257#endif
1258#if EV_USE_SELECT
1259 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1260#endif
1261
1262 for (i = NUMPRI; i--; )
1263 {
1264 array_free (pending, [i]);
1265#if EV_IDLE_ENABLE
1266 array_free (idle, [i]);
1267#endif
1268 }
1269
1270 ev_free (anfds); anfdmax = 0;
1271
1272 /* have to use the microsoft-never-gets-it-right macro */
1273 array_free (fdchange, EMPTY);
1274 array_free (timer, EMPTY);
1275#if EV_PERIODIC_ENABLE
1276 array_free (periodic, EMPTY);
1277#endif
1278#if EV_FORK_ENABLE
1279 array_free (fork, EMPTY);
1280#endif
1281 array_free (prepare, EMPTY);
1282 array_free (check, EMPTY);
1283#if EV_ASYNC_ENABLE
1284 array_free (async, EMPTY);
1285#endif
1286
1287 backend = 0;
1288}
1289
1290#if EV_USE_INOTIFY
1291void inline_size infy_fork (EV_P);
1292#endif
1293
1294void inline_size
1295loop_fork (EV_P)
1296{
1297#if EV_USE_PORT
1298 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1299#endif
1300#if EV_USE_KQUEUE
1301 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1302#endif
1303#if EV_USE_EPOLL
1304 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1305#endif
1306#if EV_USE_INOTIFY
1307 infy_fork (EV_A);
1308#endif
1309
1310 if (ev_is_active (&pipeev))
1311 {
1312 /* this "locks" the handlers against writing to the pipe */
1313 /* while we modify the fd vars */
1314 gotsig = 1;
1315#if EV_ASYNC_ENABLE
1316 gotasync = 1;
1317#endif
1318
1319 ev_ref (EV_A);
1320 ev_io_stop (EV_A_ &pipeev);
1321
1322#if EV_USE_EVENTFD
1323 if (evfd >= 0)
1324 close (evfd);
1325#endif
1326
1327 if (evpipe [0] >= 0)
1328 {
1329 close (evpipe [0]);
1330 close (evpipe [1]);
1331 }
1332
1333 evpipe_init (EV_A);
1334 /* now iterate over everything, in case we missed something */
1335 pipecb (EV_A_ &pipeev, EV_READ);
1336 }
1337
1338 postfork = 0;
1339}
1340
1341#if EV_MULTIPLICITY
1342struct ev_loop *
1343ev_loop_new (unsigned int flags)
1344{
1345 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1346
1347 memset (loop, 0, sizeof (struct ev_loop));
1348
1349 loop_init (EV_A_ flags);
1350
1351 if (ev_backend (EV_A))
1352 return loop;
1353
1354 return 0;
1355}
1356
1357void
1358ev_loop_destroy (EV_P)
1359{
1360 loop_destroy (EV_A);
1361 ev_free (loop);
1362}
1363
1364void
1365ev_loop_fork (EV_P)
1366{
1367 postfork = 1; /* must be in line with ev_default_fork */
1368}
1369
1370#endif
1371
1372#if EV_MULTIPLICITY
1373struct ev_loop *
1374ev_default_loop_init (unsigned int flags)
1375#else
1376int
1377ev_default_loop (unsigned int flags)
1378#endif
1379{
1380 if (!ev_default_loop_ptr)
1381 {
1382#if EV_MULTIPLICITY
1383 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1384#else
1385 ev_default_loop_ptr = 1;
1386#endif
1387
1388 loop_init (EV_A_ flags);
1389
1390 if (ev_backend (EV_A))
1391 {
1392#ifndef _WIN32
508 ev_signal_init (&childev, childcb, SIGCHLD); 1393 ev_signal_init (&childev, childcb, SIGCHLD);
1394 ev_set_priority (&childev, EV_MAXPRI);
509 ev_signal_start (&childev); 1395 ev_signal_start (EV_A_ &childev);
1396 ev_unref (EV_A); /* child watcher should not keep loop alive */
1397#endif
510 } 1398 }
1399 else
1400 ev_default_loop_ptr = 0;
511 } 1401 }
512 1402
513 return ev_method; 1403 return ev_default_loop_ptr;
1404}
1405
1406void
1407ev_default_destroy (void)
1408{
1409#if EV_MULTIPLICITY
1410 struct ev_loop *loop = ev_default_loop_ptr;
1411#endif
1412
1413#ifndef _WIN32
1414 ev_ref (EV_A); /* child watcher */
1415 ev_signal_stop (EV_A_ &childev);
1416#endif
1417
1418 loop_destroy (EV_A);
1419}
1420
1421void
1422ev_default_fork (void)
1423{
1424#if EV_MULTIPLICITY
1425 struct ev_loop *loop = ev_default_loop_ptr;
1426#endif
1427
1428 if (backend)
1429 postfork = 1; /* must be in line with ev_loop_fork */
514} 1430}
515 1431
516/*****************************************************************************/ 1432/*****************************************************************************/
517 1433
518void 1434void
519ev_fork_prepare (void) 1435ev_invoke (EV_P_ void *w, int revents)
520{ 1436{
521 /* nop */ 1437 EV_CB_INVOKE ((W)w, revents);
522} 1438}
523 1439
524void 1440void inline_speed
525ev_fork_parent (void)
526{
527 /* nop */
528}
529
530void
531ev_fork_child (void)
532{
533#if EV_USE_EPOLL
534 if (ev_method == EVMETHOD_EPOLL)
535 epoll_postfork_child ();
536#endif
537
538 ev_io_stop (&sigev);
539 close (sigpipe [0]);
540 close (sigpipe [1]);
541 pipe (sigpipe);
542 siginit ();
543}
544
545/*****************************************************************************/
546
547static void
548call_pending (void) 1441call_pending (EV_P)
549{ 1442{
1443 int pri;
1444
1445 for (pri = NUMPRI; pri--; )
550 while (pendingcnt) 1446 while (pendingcnt [pri])
551 { 1447 {
552 ANPENDING *p = pendings + --pendingcnt; 1448 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553 1449
554 if (p->w) 1450 if (expect_true (p->w))
555 { 1451 {
1452 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1453
556 p->w->pending = 0; 1454 p->w->pending = 0;
557 p->w->cb (p->w, p->events); 1455 EV_CB_INVOKE (p->w, p->events);
558 } 1456 }
559 } 1457 }
560} 1458}
561 1459
562static void 1460void inline_size
563timers_reify (void) 1461timers_reify (EV_P)
564{ 1462{
565 while (timercnt && timers [0]->at <= now) 1463 while (timercnt && ((WT)timers [0])->at <= mn_now)
566 { 1464 {
567 struct ev_timer *w = timers [0]; 1465 ev_timer *w = (ev_timer *)timers [0];
1466
1467 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
568 1468
569 /* first reschedule or stop timer */ 1469 /* first reschedule or stop timer */
570 if (w->repeat) 1470 if (w->repeat)
571 { 1471 {
572 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1472 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1473
573 w->at = now + w->repeat; 1474 ((WT)w)->at += w->repeat;
1475 if (((WT)w)->at < mn_now)
1476 ((WT)w)->at = mn_now;
1477
574 downheap ((WT *)timers, timercnt, 0); 1478 downheap (timers, timercnt, 0);
575 } 1479 }
576 else 1480 else
577 ev_timer_stop (w); /* nonrepeating: stop timer */ 1481 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578 1482
579 event ((W)w, EV_TIMEOUT); 1483 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
580 } 1484 }
581} 1485}
582 1486
583static void 1487#if EV_PERIODIC_ENABLE
1488void inline_size
584periodics_reify (void) 1489periodics_reify (EV_P)
585{ 1490{
586 while (periodiccnt && periodics [0]->at <= ev_now) 1491 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
587 { 1492 {
588 struct ev_periodic *w = periodics [0]; 1493 ev_periodic *w = (ev_periodic *)periodics [0];
1494
1495 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
589 1496
590 /* first reschedule or stop timer */ 1497 /* first reschedule or stop timer */
591 if (w->interval) 1498 if (w->reschedule_cb)
592 { 1499 {
1500 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1501 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1502 downheap (periodics, periodiccnt, 0);
1503 }
1504 else if (w->interval)
1505 {
593 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
594 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 1508 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
595 downheap ((WT *)periodics, periodiccnt, 0); 1509 downheap (periodics, periodiccnt, 0);
596 } 1510 }
597 else 1511 else
598 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1512 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599 1513
600 event ((W)w, EV_PERIODIC); 1514 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
601 } 1515 }
602} 1516}
603 1517
604static void 1518static void noinline
605periodics_reschedule (ev_tstamp diff) 1519periodics_reschedule (EV_P)
606{ 1520{
607 int i; 1521 int i;
608 1522
609 /* adjust periodics after time jump */ 1523 /* adjust periodics after time jump */
610 for (i = 0; i < periodiccnt; ++i) 1524 for (i = 0; i < periodiccnt; ++i)
611 { 1525 {
612 struct ev_periodic *w = periodics [i]; 1526 ev_periodic *w = (ev_periodic *)periodics [i];
613 1527
1528 if (w->reschedule_cb)
1529 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
614 if (w->interval) 1530 else if (w->interval)
1531 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1532 }
1533
1534 /* now rebuild the heap */
1535 for (i = periodiccnt >> 1; i--; )
1536 downheap (periodics, periodiccnt, i);
1537}
1538#endif
1539
1540#if EV_IDLE_ENABLE
1541void inline_size
1542idle_reify (EV_P)
1543{
1544 if (expect_false (idleall))
1545 {
1546 int pri;
1547
1548 for (pri = NUMPRI; pri--; )
615 { 1549 {
616 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1550 if (pendingcnt [pri])
1551 break;
617 1552
618 if (fabs (diff) >= 1e-4) 1553 if (idlecnt [pri])
619 { 1554 {
620 ev_periodic_stop (w); 1555 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
621 ev_periodic_start (w); 1556 break;
622
623 i = 0; /* restart loop, inefficient, but time jumps should be rare */
624 } 1557 }
625 } 1558 }
626 } 1559 }
627} 1560}
1561#endif
628 1562
629static int 1563void inline_speed
630time_update_monotonic (void) 1564time_update (EV_P_ ev_tstamp max_block)
631{
632 now = get_clock ();
633
634 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
635 {
636 ev_now = now + diff;
637 return 0;
638 }
639 else
640 {
641 now_floor = now;
642 ev_now = ev_time ();
643 return 1;
644 }
645}
646
647static void
648time_update (void)
649{ 1565{
650 int i; 1566 int i;
651 1567
652#if EV_USE_MONOTONIC 1568#if EV_USE_MONOTONIC
653 if (expect_true (have_monotonic)) 1569 if (expect_true (have_monotonic))
654 { 1570 {
655 if (time_update_monotonic ()) 1571 ev_tstamp odiff = rtmn_diff;
1572
1573 mn_now = get_clock ();
1574
1575 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1576 /* interpolate in the meantime */
1577 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
656 { 1578 {
657 ev_tstamp odiff = diff; 1579 ev_rt_now = rtmn_diff + mn_now;
658 1580 return;
659 for (i = 4; --i; ) /* loop a few times, before making important decisions */
660 {
661 diff = ev_now - now;
662
663 if (fabs (odiff - diff) < MIN_TIMEJUMP)
664 return; /* all is well */
665
666 ev_now = ev_time ();
667 now = get_clock ();
668 now_floor = now;
669 }
670
671 periodics_reschedule (diff - odiff);
672 /* no timer adjustment, as the monotonic clock doesn't jump */
673 } 1581 }
1582
1583 now_floor = mn_now;
1584 ev_rt_now = ev_time ();
1585
1586 /* loop a few times, before making important decisions.
1587 * on the choice of "4": one iteration isn't enough,
1588 * in case we get preempted during the calls to
1589 * ev_time and get_clock. a second call is almost guaranteed
1590 * to succeed in that case, though. and looping a few more times
1591 * doesn't hurt either as we only do this on time-jumps or
1592 * in the unlikely event of having been preempted here.
1593 */
1594 for (i = 4; --i; )
1595 {
1596 rtmn_diff = ev_rt_now - mn_now;
1597
1598 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1599 return; /* all is well */
1600
1601 ev_rt_now = ev_time ();
1602 mn_now = get_clock ();
1603 now_floor = mn_now;
1604 }
1605
1606# if EV_PERIODIC_ENABLE
1607 periodics_reschedule (EV_A);
1608# endif
1609 /* no timer adjustment, as the monotonic clock doesn't jump */
1610 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
674 } 1611 }
675 else 1612 else
676#endif 1613#endif
677 { 1614 {
678 ev_now = ev_time (); 1615 ev_rt_now = ev_time ();
679 1616
680 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1617 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
681 { 1618 {
1619#if EV_PERIODIC_ENABLE
682 periodics_reschedule (ev_now - now); 1620 periodics_reschedule (EV_A);
683 1621#endif
684 /* adjust timers. this is easy, as the offset is the same for all */ 1622 /* adjust timers. this is easy, as the offset is the same for all of them */
685 for (i = 0; i < timercnt; ++i) 1623 for (i = 0; i < timercnt; ++i)
686 timers [i]->at += diff; 1624 ((WT)timers [i])->at += ev_rt_now - mn_now;
687 } 1625 }
688 1626
689 now = ev_now; 1627 mn_now = ev_rt_now;
690 } 1628 }
691} 1629}
692 1630
693int ev_loop_done; 1631void
1632ev_ref (EV_P)
1633{
1634 ++activecnt;
1635}
694 1636
1637void
1638ev_unref (EV_P)
1639{
1640 --activecnt;
1641}
1642
1643static int loop_done;
1644
1645void
695void ev_loop (int flags) 1646ev_loop (EV_P_ int flags)
696{ 1647{
697 double block; 1648 loop_done = EVUNLOOP_CANCEL;
698 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1649
1650 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
699 1651
700 do 1652 do
701 { 1653 {
1654#ifndef _WIN32
1655 if (expect_false (curpid)) /* penalise the forking check even more */
1656 if (expect_false (getpid () != curpid))
1657 {
1658 curpid = getpid ();
1659 postfork = 1;
1660 }
1661#endif
1662
1663#if EV_FORK_ENABLE
1664 /* we might have forked, so queue fork handlers */
1665 if (expect_false (postfork))
1666 if (forkcnt)
1667 {
1668 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1669 call_pending (EV_A);
1670 }
1671#endif
1672
702 /* queue check watchers (and execute them) */ 1673 /* queue prepare watchers (and execute them) */
703 if (expect_false (preparecnt)) 1674 if (expect_false (preparecnt))
704 { 1675 {
705 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1676 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706 call_pending (); 1677 call_pending (EV_A);
707 } 1678 }
708 1679
1680 if (expect_false (!activecnt))
1681 break;
1682
1683 /* we might have forked, so reify kernel state if necessary */
1684 if (expect_false (postfork))
1685 loop_fork (EV_A);
1686
709 /* update fd-related kernel structures */ 1687 /* update fd-related kernel structures */
710 fd_reify (); 1688 fd_reify (EV_A);
711 1689
712 /* calculate blocking time */ 1690 /* calculate blocking time */
1691 {
1692 ev_tstamp waittime = 0.;
1693 ev_tstamp sleeptime = 0.;
713 1694
714 /* we only need this for !monotonic clockor timers, but as we basically 1695 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
715 always have timers, we just calculate it always */
716#if EV_USE_MONOTONIC
717 if (expect_true (have_monotonic))
718 time_update_monotonic ();
719 else
720#endif
721 { 1696 {
722 ev_now = ev_time (); 1697 /* update time to cancel out callback processing overhead */
723 now = ev_now; 1698 time_update (EV_A_ 1e100);
724 }
725 1699
726 if (flags & EVLOOP_NONBLOCK || idlecnt)
727 block = 0.;
728 else
729 {
730 block = MAX_BLOCKTIME; 1700 waittime = MAX_BLOCKTIME;
731 1701
732 if (timercnt) 1702 if (timercnt)
733 { 1703 {
734 ev_tstamp to = timers [0]->at - now + method_fudge; 1704 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
735 if (block > to) block = to; 1705 if (waittime > to) waittime = to;
736 } 1706 }
737 1707
1708#if EV_PERIODIC_ENABLE
738 if (periodiccnt) 1709 if (periodiccnt)
739 { 1710 {
740 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1711 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
741 if (block > to) block = to; 1712 if (waittime > to) waittime = to;
742 } 1713 }
1714#endif
743 1715
744 if (block < 0.) block = 0.; 1716 if (expect_false (waittime < timeout_blocktime))
1717 waittime = timeout_blocktime;
1718
1719 sleeptime = waittime - backend_fudge;
1720
1721 if (expect_true (sleeptime > io_blocktime))
1722 sleeptime = io_blocktime;
1723
1724 if (sleeptime)
1725 {
1726 ev_sleep (sleeptime);
1727 waittime -= sleeptime;
1728 }
745 } 1729 }
746 1730
747 method_poll (block); 1731 ++loop_count;
1732 backend_poll (EV_A_ waittime);
748 1733
749 /* update ev_now, do magic */ 1734 /* update ev_rt_now, do magic */
750 time_update (); 1735 time_update (EV_A_ waittime + sleeptime);
1736 }
751 1737
752 /* queue pending timers and reschedule them */ 1738 /* queue pending timers and reschedule them */
753 timers_reify (); /* relative timers called last */ 1739 timers_reify (EV_A); /* relative timers called last */
1740#if EV_PERIODIC_ENABLE
754 periodics_reify (); /* absolute timers called first */ 1741 periodics_reify (EV_A); /* absolute timers called first */
1742#endif
755 1743
1744#if EV_IDLE_ENABLE
756 /* queue idle watchers unless io or timers are pending */ 1745 /* queue idle watchers unless other events are pending */
757 if (!pendingcnt) 1746 idle_reify (EV_A);
758 queue_events ((W *)idles, idlecnt, EV_IDLE); 1747#endif
759 1748
760 /* queue check watchers, to be executed first */ 1749 /* queue check watchers, to be executed first */
761 if (checkcnt) 1750 if (expect_false (checkcnt))
762 queue_events ((W *)checks, checkcnt, EV_CHECK); 1751 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763 1752
764 call_pending (); 1753 call_pending (EV_A);
765 } 1754 }
766 while (!ev_loop_done); 1755 while (expect_true (
1756 activecnt
1757 && !loop_done
1758 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1759 ));
767 1760
768 if (ev_loop_done != 2) 1761 if (loop_done == EVUNLOOP_ONE)
1762 loop_done = EVUNLOOP_CANCEL;
1763}
1764
1765void
1766ev_unloop (EV_P_ int how)
1767{
769 ev_loop_done = 0; 1768 loop_done = how;
770} 1769}
771 1770
772/*****************************************************************************/ 1771/*****************************************************************************/
773 1772
774static void 1773void inline_size
775wlist_add (WL *head, WL elem) 1774wlist_add (WL *head, WL elem)
776{ 1775{
777 elem->next = *head; 1776 elem->next = *head;
778 *head = elem; 1777 *head = elem;
779} 1778}
780 1779
781static void 1780void inline_size
782wlist_del (WL *head, WL elem) 1781wlist_del (WL *head, WL elem)
783{ 1782{
784 while (*head) 1783 while (*head)
785 { 1784 {
786 if (*head == elem) 1785 if (*head == elem)
… …
791 1790
792 head = &(*head)->next; 1791 head = &(*head)->next;
793 } 1792 }
794} 1793}
795 1794
796static void 1795void inline_speed
797ev_clear_pending (W w) 1796clear_pending (EV_P_ W w)
798{ 1797{
799 if (w->pending) 1798 if (w->pending)
800 { 1799 {
801 pendings [w->pending - 1].w = 0; 1800 pendings [ABSPRI (w)][w->pending - 1].w = 0;
802 w->pending = 0; 1801 w->pending = 0;
803 } 1802 }
804} 1803}
805 1804
806static void 1805int
1806ev_clear_pending (EV_P_ void *w)
1807{
1808 W w_ = (W)w;
1809 int pending = w_->pending;
1810
1811 if (expect_true (pending))
1812 {
1813 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1814 w_->pending = 0;
1815 p->w = 0;
1816 return p->events;
1817 }
1818 else
1819 return 0;
1820}
1821
1822void inline_size
1823pri_adjust (EV_P_ W w)
1824{
1825 int pri = w->priority;
1826 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1827 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1828 w->priority = pri;
1829}
1830
1831void inline_speed
807ev_start (W w, int active) 1832ev_start (EV_P_ W w, int active)
808{ 1833{
1834 pri_adjust (EV_A_ w);
809 w->active = active; 1835 w->active = active;
1836 ev_ref (EV_A);
810} 1837}
811 1838
812static void 1839void inline_size
813ev_stop (W w) 1840ev_stop (EV_P_ W w)
814{ 1841{
1842 ev_unref (EV_A);
815 w->active = 0; 1843 w->active = 0;
816} 1844}
817 1845
818/*****************************************************************************/ 1846/*****************************************************************************/
819 1847
820void 1848void noinline
821ev_io_start (struct ev_io *w) 1849ev_io_start (EV_P_ ev_io *w)
822{ 1850{
823 int fd = w->fd; 1851 int fd = w->fd;
824 1852
825 if (ev_is_active (w)) 1853 if (expect_false (ev_is_active (w)))
826 return; 1854 return;
827 1855
828 assert (("ev_io_start called with negative fd", fd >= 0)); 1856 assert (("ev_io_start called with negative fd", fd >= 0));
829 1857
830 ev_start ((W)w, 1); 1858 ev_start (EV_A_ (W)w, 1);
831 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1859 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
832 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1860 wlist_add (&anfds[fd].head, (WL)w);
833 1861
834 fd_change (fd); 1862 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1863 w->events &= ~EV_IOFDSET;
835} 1864}
836 1865
837void 1866void noinline
838ev_io_stop (struct ev_io *w) 1867ev_io_stop (EV_P_ ev_io *w)
839{ 1868{
840 ev_clear_pending ((W)w); 1869 clear_pending (EV_A_ (W)w);
841 if (!ev_is_active (w)) 1870 if (expect_false (!ev_is_active (w)))
842 return; 1871 return;
843 1872
1873 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1874
844 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1875 wlist_del (&anfds[w->fd].head, (WL)w);
845 ev_stop ((W)w); 1876 ev_stop (EV_A_ (W)w);
846 1877
847 fd_change (w->fd); 1878 fd_change (EV_A_ w->fd, 1);
848} 1879}
849 1880
850void 1881void noinline
851ev_timer_start (struct ev_timer *w) 1882ev_timer_start (EV_P_ ev_timer *w)
852{ 1883{
853 if (ev_is_active (w)) 1884 if (expect_false (ev_is_active (w)))
854 return; 1885 return;
855 1886
856 w->at += now; 1887 ((WT)w)->at += mn_now;
857 1888
858 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1889 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859 1890
860 ev_start ((W)w, ++timercnt); 1891 ev_start (EV_A_ (W)w, ++timercnt);
861 array_needsize (timers, timermax, timercnt, ); 1892 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
862 timers [timercnt - 1] = w; 1893 timers [timercnt - 1] = (WT)w;
863 upheap ((WT *)timers, timercnt - 1); 1894 upheap (timers, timercnt - 1);
864}
865 1895
866void 1896 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1897}
1898
1899void noinline
867ev_timer_stop (struct ev_timer *w) 1900ev_timer_stop (EV_P_ ev_timer *w)
868{ 1901{
869 ev_clear_pending ((W)w); 1902 clear_pending (EV_A_ (W)w);
870 if (!ev_is_active (w)) 1903 if (expect_false (!ev_is_active (w)))
871 return; 1904 return;
872 1905
873 if (w->active < timercnt--) 1906 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1907
1908 {
1909 int active = ((W)w)->active;
1910
1911 if (expect_true (--active < --timercnt))
874 { 1912 {
875 timers [w->active - 1] = timers [timercnt]; 1913 timers [active] = timers [timercnt];
876 downheap ((WT *)timers, timercnt, w->active - 1); 1914 adjustheap (timers, timercnt, active);
877 } 1915 }
1916 }
878 1917
879 w->at = w->repeat; 1918 ((WT)w)->at -= mn_now;
880 1919
881 ev_stop ((W)w); 1920 ev_stop (EV_A_ (W)w);
882} 1921}
883 1922
884void 1923void noinline
885ev_timer_again (struct ev_timer *w) 1924ev_timer_again (EV_P_ ev_timer *w)
886{ 1925{
887 if (ev_is_active (w)) 1926 if (ev_is_active (w))
888 { 1927 {
889 if (w->repeat) 1928 if (w->repeat)
890 { 1929 {
891 w->at = now + w->repeat; 1930 ((WT)w)->at = mn_now + w->repeat;
892 downheap ((WT *)timers, timercnt, w->active - 1); 1931 adjustheap (timers, timercnt, ((W)w)->active - 1);
893 } 1932 }
894 else 1933 else
895 ev_timer_stop (w); 1934 ev_timer_stop (EV_A_ w);
896 } 1935 }
897 else if (w->repeat) 1936 else if (w->repeat)
1937 {
1938 w->at = w->repeat;
898 ev_timer_start (w); 1939 ev_timer_start (EV_A_ w);
1940 }
899} 1941}
900 1942
901void 1943#if EV_PERIODIC_ENABLE
1944void noinline
902ev_periodic_start (struct ev_periodic *w) 1945ev_periodic_start (EV_P_ ev_periodic *w)
903{ 1946{
904 if (ev_is_active (w)) 1947 if (expect_false (ev_is_active (w)))
905 return; 1948 return;
906 1949
1950 if (w->reschedule_cb)
1951 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1952 else if (w->interval)
1953 {
907 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1954 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908
909 /* this formula differs from the one in periodic_reify because we do not always round up */ 1955 /* this formula differs from the one in periodic_reify because we do not always round up */
910 if (w->interval)
911 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1956 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1957 }
1958 else
1959 ((WT)w)->at = w->offset;
912 1960
913 ev_start ((W)w, ++periodiccnt); 1961 ev_start (EV_A_ (W)w, ++periodiccnt);
914 array_needsize (periodics, periodicmax, periodiccnt, ); 1962 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
915 periodics [periodiccnt - 1] = w; 1963 periodics [periodiccnt - 1] = (WT)w;
916 upheap ((WT *)periodics, periodiccnt - 1); 1964 upheap (periodics, periodiccnt - 1);
917}
918 1965
919void 1966 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1967}
1968
1969void noinline
920ev_periodic_stop (struct ev_periodic *w) 1970ev_periodic_stop (EV_P_ ev_periodic *w)
921{ 1971{
922 ev_clear_pending ((W)w); 1972 clear_pending (EV_A_ (W)w);
923 if (!ev_is_active (w)) 1973 if (expect_false (!ev_is_active (w)))
924 return; 1974 return;
925 1975
926 if (w->active < periodiccnt--) 1976 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1977
1978 {
1979 int active = ((W)w)->active;
1980
1981 if (expect_true (--active < --periodiccnt))
927 { 1982 {
928 periodics [w->active - 1] = periodics [periodiccnt]; 1983 periodics [active] = periodics [periodiccnt];
929 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1984 adjustheap (periodics, periodiccnt, active);
930 } 1985 }
1986 }
931 1987
932 ev_stop ((W)w); 1988 ev_stop (EV_A_ (W)w);
933} 1989}
934 1990
935void 1991void noinline
1992ev_periodic_again (EV_P_ ev_periodic *w)
1993{
1994 /* TODO: use adjustheap and recalculation */
1995 ev_periodic_stop (EV_A_ w);
1996 ev_periodic_start (EV_A_ w);
1997}
1998#endif
1999
2000#ifndef SA_RESTART
2001# define SA_RESTART 0
2002#endif
2003
2004void noinline
936ev_signal_start (struct ev_signal *w) 2005ev_signal_start (EV_P_ ev_signal *w)
937{ 2006{
2007#if EV_MULTIPLICITY
2008 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2009#endif
938 if (ev_is_active (w)) 2010 if (expect_false (ev_is_active (w)))
939 return; 2011 return;
940 2012
941 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2013 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942 2014
943 ev_start ((W)w, 1); 2015 evpipe_init (EV_A);
2016
2017 {
2018#ifndef _WIN32
2019 sigset_t full, prev;
2020 sigfillset (&full);
2021 sigprocmask (SIG_SETMASK, &full, &prev);
2022#endif
2023
944 array_needsize (signals, signalmax, w->signum, signals_init); 2024 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2025
2026#ifndef _WIN32
2027 sigprocmask (SIG_SETMASK, &prev, 0);
2028#endif
2029 }
2030
2031 ev_start (EV_A_ (W)w, 1);
945 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2032 wlist_add (&signals [w->signum - 1].head, (WL)w);
946 2033
947 if (!w->next) 2034 if (!((WL)w)->next)
948 { 2035 {
2036#if _WIN32
2037 signal (w->signum, ev_sighandler);
2038#else
949 struct sigaction sa; 2039 struct sigaction sa;
950 sa.sa_handler = sighandler; 2040 sa.sa_handler = ev_sighandler;
951 sigfillset (&sa.sa_mask); 2041 sigfillset (&sa.sa_mask);
952 sa.sa_flags = 0; 2042 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953 sigaction (w->signum, &sa, 0); 2043 sigaction (w->signum, &sa, 0);
2044#endif
954 } 2045 }
955} 2046}
956 2047
957void 2048void noinline
958ev_signal_stop (struct ev_signal *w) 2049ev_signal_stop (EV_P_ ev_signal *w)
959{ 2050{
960 ev_clear_pending ((W)w); 2051 clear_pending (EV_A_ (W)w);
961 if (!ev_is_active (w)) 2052 if (expect_false (!ev_is_active (w)))
962 return; 2053 return;
963 2054
964 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2055 wlist_del (&signals [w->signum - 1].head, (WL)w);
965 ev_stop ((W)w); 2056 ev_stop (EV_A_ (W)w);
966 2057
967 if (!signals [w->signum - 1].head) 2058 if (!signals [w->signum - 1].head)
968 signal (w->signum, SIG_DFL); 2059 signal (w->signum, SIG_DFL);
969} 2060}
970 2061
971void 2062void
972ev_idle_start (struct ev_idle *w) 2063ev_child_start (EV_P_ ev_child *w)
973{ 2064{
2065#if EV_MULTIPLICITY
2066 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2067#endif
974 if (ev_is_active (w)) 2068 if (expect_false (ev_is_active (w)))
975 return; 2069 return;
976 2070
977 ev_start ((W)w, ++idlecnt); 2071 ev_start (EV_A_ (W)w, 1);
978 array_needsize (idles, idlemax, idlecnt, ); 2072 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
979 idles [idlecnt - 1] = w;
980} 2073}
981 2074
982void 2075void
983ev_idle_stop (struct ev_idle *w) 2076ev_child_stop (EV_P_ ev_child *w)
984{ 2077{
985 ev_clear_pending ((W)w); 2078 clear_pending (EV_A_ (W)w);
986 if (ev_is_active (w)) 2079 if (expect_false (!ev_is_active (w)))
987 return; 2080 return;
988 2081
989 idles [w->active - 1] = idles [--idlecnt]; 2082 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
990 ev_stop ((W)w); 2083 ev_stop (EV_A_ (W)w);
991} 2084}
992 2085
2086#if EV_STAT_ENABLE
2087
2088# ifdef _WIN32
2089# undef lstat
2090# define lstat(a,b) _stati64 (a,b)
2091# endif
2092
2093#define DEF_STAT_INTERVAL 5.0074891
2094#define MIN_STAT_INTERVAL 0.1074891
2095
2096static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2097
2098#if EV_USE_INOTIFY
2099# define EV_INOTIFY_BUFSIZE 8192
2100
2101static void noinline
2102infy_add (EV_P_ ev_stat *w)
2103{
2104 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);
2105
2106 if (w->wd < 0)
2107 {
2108 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2109
2110 /* monitor some parent directory for speedup hints */
2111 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2112 {
2113 char path [4096];
2114 strcpy (path, w->path);
2115
2116 do
2117 {
2118 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2119 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2120
2121 char *pend = strrchr (path, '/');
2122
2123 if (!pend)
2124 break; /* whoops, no '/', complain to your admin */
2125
2126 *pend = 0;
2127 w->wd = inotify_add_watch (fs_fd, path, mask);
2128 }
2129 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2130 }
2131 }
2132 else
2133 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2134
2135 if (w->wd >= 0)
2136 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2137}
2138
2139static void noinline
2140infy_del (EV_P_ ev_stat *w)
2141{
2142 int slot;
2143 int wd = w->wd;
2144
2145 if (wd < 0)
2146 return;
2147
2148 w->wd = -2;
2149 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2150 wlist_del (&fs_hash [slot].head, (WL)w);
2151
2152 /* remove this watcher, if others are watching it, they will rearm */
2153 inotify_rm_watch (fs_fd, wd);
2154}
2155
2156static void noinline
2157infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2158{
2159 if (slot < 0)
2160 /* overflow, need to check for all hahs slots */
2161 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2162 infy_wd (EV_A_ slot, wd, ev);
2163 else
2164 {
2165 WL w_;
2166
2167 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2168 {
2169 ev_stat *w = (ev_stat *)w_;
2170 w_ = w_->next; /* lets us remove this watcher and all before it */
2171
2172 if (w->wd == wd || wd == -1)
2173 {
2174 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2175 {
2176 w->wd = -1;
2177 infy_add (EV_A_ w); /* re-add, no matter what */
2178 }
2179
2180 stat_timer_cb (EV_A_ &w->timer, 0);
2181 }
2182 }
2183 }
2184}
2185
2186static void
2187infy_cb (EV_P_ ev_io *w, int revents)
2188{
2189 char buf [EV_INOTIFY_BUFSIZE];
2190 struct inotify_event *ev = (struct inotify_event *)buf;
2191 int ofs;
2192 int len = read (fs_fd, buf, sizeof (buf));
2193
2194 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2195 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2196}
2197
2198void inline_size
2199infy_init (EV_P)
2200{
2201 if (fs_fd != -2)
2202 return;
2203
2204 fs_fd = inotify_init ();
2205
2206 if (fs_fd >= 0)
2207 {
2208 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2209 ev_set_priority (&fs_w, EV_MAXPRI);
2210 ev_io_start (EV_A_ &fs_w);
2211 }
2212}
2213
2214void inline_size
2215infy_fork (EV_P)
2216{
2217 int slot;
2218
2219 if (fs_fd < 0)
2220 return;
2221
2222 close (fs_fd);
2223 fs_fd = inotify_init ();
2224
2225 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2226 {
2227 WL w_ = fs_hash [slot].head;
2228 fs_hash [slot].head = 0;
2229
2230 while (w_)
2231 {
2232 ev_stat *w = (ev_stat *)w_;
2233 w_ = w_->next; /* lets us add this watcher */
2234
2235 w->wd = -1;
2236
2237 if (fs_fd >= 0)
2238 infy_add (EV_A_ w); /* re-add, no matter what */
2239 else
2240 ev_timer_start (EV_A_ &w->timer);
2241 }
2242
2243 }
2244}
2245
2246#endif
2247
993void 2248void
2249ev_stat_stat (EV_P_ ev_stat *w)
2250{
2251 if (lstat (w->path, &w->attr) < 0)
2252 w->attr.st_nlink = 0;
2253 else if (!w->attr.st_nlink)
2254 w->attr.st_nlink = 1;
2255}
2256
2257static void noinline
2258stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2259{
2260 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2261
2262 /* we copy this here each the time so that */
2263 /* prev has the old value when the callback gets invoked */
2264 w->prev = w->attr;
2265 ev_stat_stat (EV_A_ w);
2266
2267 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2268 if (
2269 w->prev.st_dev != w->attr.st_dev
2270 || w->prev.st_ino != w->attr.st_ino
2271 || w->prev.st_mode != w->attr.st_mode
2272 || w->prev.st_nlink != w->attr.st_nlink
2273 || w->prev.st_uid != w->attr.st_uid
2274 || w->prev.st_gid != w->attr.st_gid
2275 || w->prev.st_rdev != w->attr.st_rdev
2276 || w->prev.st_size != w->attr.st_size
2277 || w->prev.st_atime != w->attr.st_atime
2278 || w->prev.st_mtime != w->attr.st_mtime
2279 || w->prev.st_ctime != w->attr.st_ctime
2280 ) {
2281 #if EV_USE_INOTIFY
2282 infy_del (EV_A_ w);
2283 infy_add (EV_A_ w);
2284 ev_stat_stat (EV_A_ w); /* avoid race... */
2285 #endif
2286
2287 ev_feed_event (EV_A_ w, EV_STAT);
2288 }
2289}
2290
2291void
2292ev_stat_start (EV_P_ ev_stat *w)
2293{
2294 if (expect_false (ev_is_active (w)))
2295 return;
2296
2297 /* since we use memcmp, we need to clear any padding data etc. */
2298 memset (&w->prev, 0, sizeof (ev_statdata));
2299 memset (&w->attr, 0, sizeof (ev_statdata));
2300
2301 ev_stat_stat (EV_A_ w);
2302
2303 if (w->interval < MIN_STAT_INTERVAL)
2304 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2305
2306 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2307 ev_set_priority (&w->timer, ev_priority (w));
2308
2309#if EV_USE_INOTIFY
2310 infy_init (EV_A);
2311
2312 if (fs_fd >= 0)
2313 infy_add (EV_A_ w);
2314 else
2315#endif
2316 ev_timer_start (EV_A_ &w->timer);
2317
2318 ev_start (EV_A_ (W)w, 1);
2319}
2320
2321void
2322ev_stat_stop (EV_P_ ev_stat *w)
2323{
2324 clear_pending (EV_A_ (W)w);
2325 if (expect_false (!ev_is_active (w)))
2326 return;
2327
2328#if EV_USE_INOTIFY
2329 infy_del (EV_A_ w);
2330#endif
2331 ev_timer_stop (EV_A_ &w->timer);
2332
2333 ev_stop (EV_A_ (W)w);
2334}
2335#endif
2336
2337#if EV_IDLE_ENABLE
2338void
2339ev_idle_start (EV_P_ ev_idle *w)
2340{
2341 if (expect_false (ev_is_active (w)))
2342 return;
2343
2344 pri_adjust (EV_A_ (W)w);
2345
2346 {
2347 int active = ++idlecnt [ABSPRI (w)];
2348
2349 ++idleall;
2350 ev_start (EV_A_ (W)w, active);
2351
2352 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2353 idles [ABSPRI (w)][active - 1] = w;
2354 }
2355}
2356
2357void
2358ev_idle_stop (EV_P_ ev_idle *w)
2359{
2360 clear_pending (EV_A_ (W)w);
2361 if (expect_false (!ev_is_active (w)))
2362 return;
2363
2364 {
2365 int active = ((W)w)->active;
2366
2367 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2368 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2369
2370 ev_stop (EV_A_ (W)w);
2371 --idleall;
2372 }
2373}
2374#endif
2375
2376void
994ev_prepare_start (struct ev_prepare *w) 2377ev_prepare_start (EV_P_ ev_prepare *w)
995{ 2378{
996 if (ev_is_active (w)) 2379 if (expect_false (ev_is_active (w)))
997 return; 2380 return;
998 2381
999 ev_start ((W)w, ++preparecnt); 2382 ev_start (EV_A_ (W)w, ++preparecnt);
1000 array_needsize (prepares, preparemax, preparecnt, ); 2383 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1001 prepares [preparecnt - 1] = w; 2384 prepares [preparecnt - 1] = w;
1002} 2385}
1003 2386
1004void 2387void
1005ev_prepare_stop (struct ev_prepare *w) 2388ev_prepare_stop (EV_P_ ev_prepare *w)
1006{ 2389{
1007 ev_clear_pending ((W)w); 2390 clear_pending (EV_A_ (W)w);
1008 if (ev_is_active (w)) 2391 if (expect_false (!ev_is_active (w)))
1009 return; 2392 return;
1010 2393
2394 {
2395 int active = ((W)w)->active;
1011 prepares [w->active - 1] = prepares [--preparecnt]; 2396 prepares [active - 1] = prepares [--preparecnt];
2397 ((W)prepares [active - 1])->active = active;
2398 }
2399
1012 ev_stop ((W)w); 2400 ev_stop (EV_A_ (W)w);
1013} 2401}
1014 2402
1015void 2403void
1016ev_check_start (struct ev_check *w) 2404ev_check_start (EV_P_ ev_check *w)
1017{ 2405{
1018 if (ev_is_active (w)) 2406 if (expect_false (ev_is_active (w)))
1019 return; 2407 return;
1020 2408
1021 ev_start ((W)w, ++checkcnt); 2409 ev_start (EV_A_ (W)w, ++checkcnt);
1022 array_needsize (checks, checkmax, checkcnt, ); 2410 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1023 checks [checkcnt - 1] = w; 2411 checks [checkcnt - 1] = w;
1024} 2412}
1025 2413
1026void 2414void
1027ev_check_stop (struct ev_check *w) 2415ev_check_stop (EV_P_ ev_check *w)
1028{ 2416{
1029 ev_clear_pending ((W)w); 2417 clear_pending (EV_A_ (W)w);
1030 if (ev_is_active (w)) 2418 if (expect_false (!ev_is_active (w)))
1031 return; 2419 return;
1032 2420
2421 {
2422 int active = ((W)w)->active;
1033 checks [w->active - 1] = checks [--checkcnt]; 2423 checks [active - 1] = checks [--checkcnt];
2424 ((W)checks [active - 1])->active = active;
2425 }
2426
1034 ev_stop ((W)w); 2427 ev_stop (EV_A_ (W)w);
1035} 2428}
1036 2429
1037void 2430#if EV_EMBED_ENABLE
1038ev_child_start (struct ev_child *w) 2431void noinline
2432ev_embed_sweep (EV_P_ ev_embed *w)
1039{ 2433{
2434 ev_loop (w->other, EVLOOP_NONBLOCK);
2435}
2436
2437static void
2438embed_io_cb (EV_P_ ev_io *io, int revents)
2439{
2440 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2441
1040 if (ev_is_active (w)) 2442 if (ev_cb (w))
1041 return; 2443 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2444 else
2445 ev_loop (w->other, EVLOOP_NONBLOCK);
2446}
1042 2447
2448static void
2449embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2450{
2451 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2452
2453 {
2454 struct ev_loop *loop = w->other;
2455
2456 while (fdchangecnt)
2457 {
2458 fd_reify (EV_A);
2459 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2460 }
2461 }
2462}
2463
2464#if 0
2465static void
2466embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2467{
2468 ev_idle_stop (EV_A_ idle);
2469}
2470#endif
2471
2472void
2473ev_embed_start (EV_P_ ev_embed *w)
2474{
2475 if (expect_false (ev_is_active (w)))
2476 return;
2477
2478 {
2479 struct ev_loop *loop = w->other;
2480 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2481 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2482 }
2483
2484 ev_set_priority (&w->io, ev_priority (w));
2485 ev_io_start (EV_A_ &w->io);
2486
2487 ev_prepare_init (&w->prepare, embed_prepare_cb);
2488 ev_set_priority (&w->prepare, EV_MINPRI);
2489 ev_prepare_start (EV_A_ &w->prepare);
2490
2491 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2492
1043 ev_start ((W)w, 1); 2493 ev_start (EV_A_ (W)w, 1);
1044 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045} 2494}
1046 2495
1047void 2496void
1048ev_child_stop (struct ev_child *w) 2497ev_embed_stop (EV_P_ ev_embed *w)
1049{ 2498{
1050 ev_clear_pending ((W)w); 2499 clear_pending (EV_A_ (W)w);
1051 if (ev_is_active (w)) 2500 if (expect_false (!ev_is_active (w)))
1052 return; 2501 return;
1053 2502
1054 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2503 ev_io_stop (EV_A_ &w->io);
2504 ev_prepare_stop (EV_A_ &w->prepare);
2505
1055 ev_stop ((W)w); 2506 ev_stop (EV_A_ (W)w);
1056} 2507}
2508#endif
2509
2510#if EV_FORK_ENABLE
2511void
2512ev_fork_start (EV_P_ ev_fork *w)
2513{
2514 if (expect_false (ev_is_active (w)))
2515 return;
2516
2517 ev_start (EV_A_ (W)w, ++forkcnt);
2518 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2519 forks [forkcnt - 1] = w;
2520}
2521
2522void
2523ev_fork_stop (EV_P_ ev_fork *w)
2524{
2525 clear_pending (EV_A_ (W)w);
2526 if (expect_false (!ev_is_active (w)))
2527 return;
2528
2529 {
2530 int active = ((W)w)->active;
2531 forks [active - 1] = forks [--forkcnt];
2532 ((W)forks [active - 1])->active = active;
2533 }
2534
2535 ev_stop (EV_A_ (W)w);
2536}
2537#endif
2538
2539#if EV_ASYNC_ENABLE
2540void
2541ev_async_start (EV_P_ ev_async *w)
2542{
2543 if (expect_false (ev_is_active (w)))
2544 return;
2545
2546 evpipe_init (EV_A);
2547
2548 ev_start (EV_A_ (W)w, ++asynccnt);
2549 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2550 asyncs [asynccnt - 1] = w;
2551}
2552
2553void
2554ev_async_stop (EV_P_ ev_async *w)
2555{
2556 clear_pending (EV_A_ (W)w);
2557 if (expect_false (!ev_is_active (w)))
2558 return;
2559
2560 {
2561 int active = ((W)w)->active;
2562 asyncs [active - 1] = asyncs [--asynccnt];
2563 ((W)asyncs [active - 1])->active = active;
2564 }
2565
2566 ev_stop (EV_A_ (W)w);
2567}
2568
2569void
2570ev_async_send (EV_P_ ev_async *w)
2571{
2572 w->sent = 1;
2573 evpipe_write (EV_A_ &gotasync);
2574}
2575#endif
1057 2576
1058/*****************************************************************************/ 2577/*****************************************************************************/
1059 2578
1060struct ev_once 2579struct ev_once
1061{ 2580{
1062 struct ev_io io; 2581 ev_io io;
1063 struct ev_timer to; 2582 ev_timer to;
1064 void (*cb)(int revents, void *arg); 2583 void (*cb)(int revents, void *arg);
1065 void *arg; 2584 void *arg;
1066}; 2585};
1067 2586
1068static void 2587static void
1069once_cb (struct ev_once *once, int revents) 2588once_cb (EV_P_ struct ev_once *once, int revents)
1070{ 2589{
1071 void (*cb)(int revents, void *arg) = once->cb; 2590 void (*cb)(int revents, void *arg) = once->cb;
1072 void *arg = once->arg; 2591 void *arg = once->arg;
1073 2592
1074 ev_io_stop (&once->io); 2593 ev_io_stop (EV_A_ &once->io);
1075 ev_timer_stop (&once->to); 2594 ev_timer_stop (EV_A_ &once->to);
1076 free (once); 2595 ev_free (once);
1077 2596
1078 cb (revents, arg); 2597 cb (revents, arg);
1079} 2598}
1080 2599
1081static void 2600static void
1082once_cb_io (struct ev_io *w, int revents) 2601once_cb_io (EV_P_ ev_io *w, int revents)
1083{ 2602{
1084 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2603 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085} 2604}
1086 2605
1087static void 2606static void
1088once_cb_to (struct ev_timer *w, int revents) 2607once_cb_to (EV_P_ ev_timer *w, int revents)
1089{ 2608{
1090 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2609 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091} 2610}
1092 2611
1093void 2612void
1094ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2613ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095{ 2614{
1096 struct ev_once *once = malloc (sizeof (struct ev_once)); 2615 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1097 2616
1098 if (!once) 2617 if (expect_false (!once))
2618 {
1099 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2619 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1100 else 2620 return;
1101 { 2621 }
2622
1102 once->cb = cb; 2623 once->cb = cb;
1103 once->arg = arg; 2624 once->arg = arg;
1104 2625
1105 ev_watcher_init (&once->io, once_cb_io); 2626 ev_init (&once->io, once_cb_io);
1106 if (fd >= 0) 2627 if (fd >= 0)
1107 { 2628 {
1108 ev_io_set (&once->io, fd, events); 2629 ev_io_set (&once->io, fd, events);
1109 ev_io_start (&once->io); 2630 ev_io_start (EV_A_ &once->io);
1110 } 2631 }
1111 2632
1112 ev_watcher_init (&once->to, once_cb_to); 2633 ev_init (&once->to, once_cb_to);
1113 if (timeout >= 0.) 2634 if (timeout >= 0.)
1114 { 2635 {
1115 ev_timer_set (&once->to, timeout, 0.); 2636 ev_timer_set (&once->to, timeout, 0.);
1116 ev_timer_start (&once->to); 2637 ev_timer_start (EV_A_ &once->to);
1117 }
1118 }
1119}
1120
1121/*****************************************************************************/
1122
1123#if 0
1124
1125struct ev_io wio;
1126
1127static void
1128sin_cb (struct ev_io *w, int revents)
1129{
1130 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1131}
1132
1133static void
1134ocb (struct ev_timer *w, int revents)
1135{
1136 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1137 ev_timer_stop (w);
1138 ev_timer_start (w);
1139}
1140
1141static void
1142scb (struct ev_signal *w, int revents)
1143{
1144 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1145 ev_io_stop (&wio);
1146 ev_io_start (&wio);
1147}
1148
1149static void
1150gcb (struct ev_signal *w, int revents)
1151{
1152 fprintf (stderr, "generic %x\n", revents);
1153
1154}
1155
1156int main (void)
1157{
1158 ev_init (0);
1159
1160 ev_io_init (&wio, sin_cb, 0, EV_READ);
1161 ev_io_start (&wio);
1162
1163 struct ev_timer t[10000];
1164
1165#if 0
1166 int i;
1167 for (i = 0; i < 10000; ++i)
1168 { 2638 }
1169 struct ev_timer *w = t + i;
1170 ev_watcher_init (w, ocb, i);
1171 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1172 ev_timer_start (w);
1173 if (drand48 () < 0.5)
1174 ev_timer_stop (w);
1175 }
1176#endif
1177
1178 struct ev_timer t1;
1179 ev_timer_init (&t1, ocb, 5, 10);
1180 ev_timer_start (&t1);
1181
1182 struct ev_signal sig;
1183 ev_signal_init (&sig, scb, SIGQUIT);
1184 ev_signal_start (&sig);
1185
1186 struct ev_check cw;
1187 ev_check_init (&cw, gcb);
1188 ev_check_start (&cw);
1189
1190 struct ev_idle iw;
1191 ev_idle_init (&iw, gcb);
1192 ev_idle_start (&iw);
1193
1194 ev_loop (0);
1195
1196 return 0;
1197} 2639}
1198 2640
2641#if EV_MULTIPLICITY
2642 #include "ev_wrap.h"
1199#endif 2643#endif
1200 2644
2645#ifdef __cplusplus
2646}
2647#endif
1201 2648
1202
1203

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