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Comparing libev/ev.c (file contents):
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC vs.
Revision 1.228 by root, Fri May 2 08:07:37 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 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
37# include "config.h" 49# include "config.h"
50# endif
38 51
39# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 53# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
42# endif 55# endif
… …
47# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
48# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
49# endif 62# endif
50# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
51# define EV_USE_REALTIME 0 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
52# endif 73# endif
53# endif 74# endif
54 75
55# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
56# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
90# else 111# else
91# define EV_USE_PORT 0 112# define EV_USE_PORT 0
92# endif 113# endif
93# endif 114# endif
94 115
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
95#endif 132#endif
96 133
97#include <math.h> 134#include <math.h>
98#include <stdlib.h> 135#include <stdlib.h>
99#include <fcntl.h> 136#include <fcntl.h>
… …
106#include <sys/types.h> 143#include <sys/types.h>
107#include <time.h> 144#include <time.h>
108 145
109#include <signal.h> 146#include <signal.h>
110 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
111#ifndef _WIN32 154#ifndef _WIN32
112# include <unistd.h>
113# include <sys/time.h> 155# include <sys/time.h>
114# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
115#else 158#else
116# define WIN32_LEAN_AND_MEAN 159# define WIN32_LEAN_AND_MEAN
117# include <windows.h> 160# include <windows.h>
118# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
119# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
120# endif 163# endif
121#endif 164#endif
122 165
123/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
124 167
125#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
126# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
127#endif 170#endif
128 171
129#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
130# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
131#endif 178#endif
132 179
133#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
134# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
135#endif 182#endif
… …
141# define EV_USE_POLL 1 188# define EV_USE_POLL 1
142# endif 189# endif
143#endif 190#endif
144 191
145#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
146# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
147#endif 198#endif
148 199
149#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
150# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
151#endif 202#endif
152 203
153#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
154# define EV_USE_PORT 0 205# define EV_USE_PORT 0
155#endif 206#endif
156 207
157/**/ 208#ifndef EV_USE_INOTIFY
158 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
159/* darwin simply cannot be helped */ 210# define EV_USE_INOTIFY 1
160#ifdef __APPLE__ 211# else
161# undef EV_USE_POLL 212# define EV_USE_INOTIFY 0
162# undef EV_USE_KQUEUE
163#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 */
164 241
165#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
166# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
167# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
168#endif 245#endif
… …
170#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
171# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
172# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
173#endif 250#endif
174 251
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
175#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
176# include <winsock.h> 268# include <winsock.h>
177#endif 269#endif
178 270
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
179/**/ 283/**/
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 */
180 294
181#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) */
182#define MAX_BLOCKTIME 59.743 /* 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) */
183#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
184/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* 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 */
185 298
186#ifdef EV_H
187# include EV_H
188#else
189# include "ev.h"
190#endif
191
192#if __GNUC__ >= 3 299#if __GNUC__ >= 4
193# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
194# define inline static inline 301# define noinline __attribute__ ((noinline))
195#else 302#else
196# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
197# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
198#endif 308#endif
199 309
200#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
201#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
202 319
203#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
204#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
205 322
206#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
207#define EMPTY2(a,b) /* used to suppress some warnings */ 324#define EMPTY2(a,b) /* used to suppress some warnings */
208 325
209typedef struct ev_watcher *W; 326typedef ev_watcher *W;
210typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
211typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
212 329
330#define ev_at(w) ((WT)(w))->at
331
332#if EV_USE_MONOTONIC
333/* sig_atomic_t is used to avoid per-thread variables or locking but still */
334/* giving it a reasonably high chance of working on typical architetcures */
213static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 335static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
336#endif
214 337
215#ifdef _WIN32 338#ifdef _WIN32
216# include "ev_win32.c" 339# include "ev_win32.c"
217#endif 340#endif
218 341
219/*****************************************************************************/ 342/*****************************************************************************/
220 343
221static void (*syserr_cb)(const char *msg); 344static void (*syserr_cb)(const char *msg);
222 345
346void
223void ev_set_syserr_cb (void (*cb)(const char *msg)) 347ev_set_syserr_cb (void (*cb)(const char *msg))
224{ 348{
225 syserr_cb = cb; 349 syserr_cb = cb;
226} 350}
227 351
228static void 352static void noinline
229syserr (const char *msg) 353syserr (const char *msg)
230{ 354{
231 if (!msg) 355 if (!msg)
232 msg = "(libev) system error"; 356 msg = "(libev) system error";
233 357
… …
238 perror (msg); 362 perror (msg);
239 abort (); 363 abort ();
240 } 364 }
241} 365}
242 366
367static void *
368ev_realloc_emul (void *ptr, long size)
369{
370 /* some systems, notably openbsd and darwin, fail to properly
371 * implement realloc (x, 0) (as required by both ansi c-98 and
372 * the single unix specification, so work around them here.
373 */
374
375 if (size)
376 return realloc (ptr, size);
377
378 free (ptr);
379 return 0;
380}
381
243static void *(*alloc)(void *ptr, long size); 382static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
244 383
384void
245void ev_set_allocator (void *(*cb)(void *ptr, long size)) 385ev_set_allocator (void *(*cb)(void *ptr, long size))
246{ 386{
247 alloc = cb; 387 alloc = cb;
248} 388}
249 389
250static void * 390inline_speed void *
251ev_realloc (void *ptr, long size) 391ev_realloc (void *ptr, long size)
252{ 392{
253 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 393 ptr = alloc (ptr, size);
254 394
255 if (!ptr && size) 395 if (!ptr && size)
256 { 396 {
257 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 397 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
258 abort (); 398 abort ();
… …
279typedef struct 419typedef struct
280{ 420{
281 W w; 421 W w;
282 int events; 422 int events;
283} ANPENDING; 423} ANPENDING;
424
425#if EV_USE_INOTIFY
426typedef struct
427{
428 WL head;
429} ANFS;
430#endif
284 431
285#if EV_MULTIPLICITY 432#if EV_MULTIPLICITY
286 433
287 struct ev_loop 434 struct ev_loop
288 { 435 {
… …
322 gettimeofday (&tv, 0); 469 gettimeofday (&tv, 0);
323 return tv.tv_sec + tv.tv_usec * 1e-6; 470 return tv.tv_sec + tv.tv_usec * 1e-6;
324#endif 471#endif
325} 472}
326 473
327inline ev_tstamp 474ev_tstamp inline_size
328get_clock (void) 475get_clock (void)
329{ 476{
330#if EV_USE_MONOTONIC 477#if EV_USE_MONOTONIC
331 if (expect_true (have_monotonic)) 478 if (expect_true (have_monotonic))
332 { 479 {
… …
345{ 492{
346 return ev_rt_now; 493 return ev_rt_now;
347} 494}
348#endif 495#endif
349 496
350#define array_roundsize(type,n) (((n) | 4) & ~3) 497void
498ev_sleep (ev_tstamp delay)
499{
500 if (delay > 0.)
501 {
502#if EV_USE_NANOSLEEP
503 struct timespec ts;
504
505 ts.tv_sec = (time_t)delay;
506 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
507
508 nanosleep (&ts, 0);
509#elif defined(_WIN32)
510 Sleep ((unsigned long)(delay * 1e3));
511#else
512 struct timeval tv;
513
514 tv.tv_sec = (time_t)delay;
515 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
516
517 select (0, 0, 0, 0, &tv);
518#endif
519 }
520}
521
522/*****************************************************************************/
523
524int inline_size
525array_nextsize (int elem, int cur, int cnt)
526{
527 int ncur = cur + 1;
528
529 do
530 ncur <<= 1;
531 while (cnt > ncur);
532
533 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
534 if (elem * ncur > 4096)
535 {
536 ncur *= elem;
537 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
538 ncur = ncur - sizeof (void *) * 4;
539 ncur /= elem;
540 }
541
542 return ncur;
543}
544
545static noinline void *
546array_realloc (int elem, void *base, int *cur, int cnt)
547{
548 *cur = array_nextsize (elem, *cur, cnt);
549 return ev_realloc (base, elem * *cur);
550}
351 551
352#define array_needsize(type,base,cur,cnt,init) \ 552#define array_needsize(type,base,cur,cnt,init) \
353 if (expect_false ((cnt) > cur)) \ 553 if (expect_false ((cnt) > (cur))) \
354 { \ 554 { \
355 int newcnt = cur; \ 555 int ocur_ = (cur); \
356 do \ 556 (base) = (type *)array_realloc \
357 { \ 557 (sizeof (type), (base), &(cur), (cnt)); \
358 newcnt = array_roundsize (type, newcnt << 1); \ 558 init ((base) + (ocur_), (cur) - ocur_); \
359 } \
360 while ((cnt) > newcnt); \
361 \
362 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
363 init (base + cur, newcnt - cur); \
364 cur = newcnt; \
365 } 559 }
366 560
561#if 0
367#define array_slim(type,stem) \ 562#define array_slim(type,stem) \
368 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 563 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
369 { \ 564 { \
370 stem ## max = array_roundsize (stem ## cnt >> 1); \ 565 stem ## max = array_roundsize (stem ## cnt >> 1); \
371 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 566 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
372 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 567 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
373 } 568 }
569#endif
374 570
375#define array_free(stem, idx) \ 571#define array_free(stem, idx) \
376 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 572 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
377 573
378/*****************************************************************************/ 574/*****************************************************************************/
379 575
380static void 576void noinline
577ev_feed_event (EV_P_ void *w, int revents)
578{
579 W w_ = (W)w;
580 int pri = ABSPRI (w_);
581
582 if (expect_false (w_->pending))
583 pendings [pri][w_->pending - 1].events |= revents;
584 else
585 {
586 w_->pending = ++pendingcnt [pri];
587 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
588 pendings [pri][w_->pending - 1].w = w_;
589 pendings [pri][w_->pending - 1].events = revents;
590 }
591}
592
593void inline_speed
594queue_events (EV_P_ W *events, int eventcnt, int type)
595{
596 int i;
597
598 for (i = 0; i < eventcnt; ++i)
599 ev_feed_event (EV_A_ events [i], type);
600}
601
602/*****************************************************************************/
603
604void inline_size
381anfds_init (ANFD *base, int count) 605anfds_init (ANFD *base, int count)
382{ 606{
383 while (count--) 607 while (count--)
384 { 608 {
385 base->head = 0; 609 base->head = 0;
… …
388 612
389 ++base; 613 ++base;
390 } 614 }
391} 615}
392 616
393void 617void inline_speed
394ev_feed_event (EV_P_ void *w, int revents)
395{
396 W w_ = (W)w;
397
398 if (expect_false (w_->pending))
399 {
400 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
401 return;
402 }
403
404 w_->pending = ++pendingcnt [ABSPRI (w_)];
405 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
406 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408}
409
410static void
411queue_events (EV_P_ W *events, int eventcnt, int type)
412{
413 int i;
414
415 for (i = 0; i < eventcnt; ++i)
416 ev_feed_event (EV_A_ events [i], type);
417}
418
419inline void
420fd_event (EV_P_ int fd, int revents) 618fd_event (EV_P_ int fd, int revents)
421{ 619{
422 ANFD *anfd = anfds + fd; 620 ANFD *anfd = anfds + fd;
423 struct ev_io *w; 621 ev_io *w;
424 622
425 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 623 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
426 { 624 {
427 int ev = w->events & revents; 625 int ev = w->events & revents;
428 626
429 if (ev) 627 if (ev)
430 ev_feed_event (EV_A_ (W)w, ev); 628 ev_feed_event (EV_A_ (W)w, ev);
… …
432} 630}
433 631
434void 632void
435ev_feed_fd_event (EV_P_ int fd, int revents) 633ev_feed_fd_event (EV_P_ int fd, int revents)
436{ 634{
635 if (fd >= 0 && fd < anfdmax)
437 fd_event (EV_A_ fd, revents); 636 fd_event (EV_A_ fd, revents);
438} 637}
439 638
440/*****************************************************************************/ 639void inline_size
441
442inline void
443fd_reify (EV_P) 640fd_reify (EV_P)
444{ 641{
445 int i; 642 int i;
446 643
447 for (i = 0; i < fdchangecnt; ++i) 644 for (i = 0; i < fdchangecnt; ++i)
448 { 645 {
449 int fd = fdchanges [i]; 646 int fd = fdchanges [i];
450 ANFD *anfd = anfds + fd; 647 ANFD *anfd = anfds + fd;
451 struct ev_io *w; 648 ev_io *w;
452 649
453 int events = 0; 650 unsigned char events = 0;
454 651
455 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 652 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
456 events |= w->events; 653 events |= (unsigned char)w->events;
457 654
458#if EV_SELECT_IS_WINSOCKET 655#if EV_SELECT_IS_WINSOCKET
459 if (events) 656 if (events)
460 { 657 {
461 unsigned long argp; 658 unsigned long argp;
659 #ifdef EV_FD_TO_WIN32_HANDLE
660 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
661 #else
462 anfd->handle = _get_osfhandle (fd); 662 anfd->handle = _get_osfhandle (fd);
663 #endif
463 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 664 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
464 } 665 }
465#endif 666#endif
466 667
668 {
669 unsigned char o_events = anfd->events;
670 unsigned char o_reify = anfd->reify;
671
467 anfd->reify = 0; 672 anfd->reify = 0;
468
469 method_modify (EV_A_ fd, anfd->events, events);
470 anfd->events = events; 673 anfd->events = events;
674
675 if (o_events != events || o_reify & EV_IOFDSET)
676 backend_modify (EV_A_ fd, o_events, events);
677 }
471 } 678 }
472 679
473 fdchangecnt = 0; 680 fdchangecnt = 0;
474} 681}
475 682
476static void 683void inline_size
477fd_change (EV_P_ int fd) 684fd_change (EV_P_ int fd, int flags)
478{ 685{
479 if (expect_false (anfds [fd].reify)) 686 unsigned char reify = anfds [fd].reify;
480 return;
481
482 anfds [fd].reify = 1; 687 anfds [fd].reify |= flags;
483 688
689 if (expect_true (!reify))
690 {
484 ++fdchangecnt; 691 ++fdchangecnt;
485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 692 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486 fdchanges [fdchangecnt - 1] = fd; 693 fdchanges [fdchangecnt - 1] = fd;
694 }
487} 695}
488 696
489static void 697void inline_speed
490fd_kill (EV_P_ int fd) 698fd_kill (EV_P_ int fd)
491{ 699{
492 struct ev_io *w; 700 ev_io *w;
493 701
494 while ((w = (struct ev_io *)anfds [fd].head)) 702 while ((w = (ev_io *)anfds [fd].head))
495 { 703 {
496 ev_io_stop (EV_A_ w); 704 ev_io_stop (EV_A_ w);
497 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 705 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
498 } 706 }
499} 707}
500 708
501inline int 709int inline_size
502fd_valid (int fd) 710fd_valid (int fd)
503{ 711{
504#ifdef _WIN32 712#ifdef _WIN32
505 return _get_osfhandle (fd) != -1; 713 return _get_osfhandle (fd) != -1;
506#else 714#else
507 return fcntl (fd, F_GETFD) != -1; 715 return fcntl (fd, F_GETFD) != -1;
508#endif 716#endif
509} 717}
510 718
511/* called on EBADF to verify fds */ 719/* called on EBADF to verify fds */
512static void 720static void noinline
513fd_ebadf (EV_P) 721fd_ebadf (EV_P)
514{ 722{
515 int fd; 723 int fd;
516 724
517 for (fd = 0; fd < anfdmax; ++fd) 725 for (fd = 0; fd < anfdmax; ++fd)
… …
519 if (!fd_valid (fd) == -1 && errno == EBADF) 727 if (!fd_valid (fd) == -1 && errno == EBADF)
520 fd_kill (EV_A_ fd); 728 fd_kill (EV_A_ fd);
521} 729}
522 730
523/* called on ENOMEM in select/poll to kill some fds and retry */ 731/* called on ENOMEM in select/poll to kill some fds and retry */
524static void 732static void noinline
525fd_enomem (EV_P) 733fd_enomem (EV_P)
526{ 734{
527 int fd; 735 int fd;
528 736
529 for (fd = anfdmax; fd--; ) 737 for (fd = anfdmax; fd--; )
… …
532 fd_kill (EV_A_ fd); 740 fd_kill (EV_A_ fd);
533 return; 741 return;
534 } 742 }
535} 743}
536 744
537/* usually called after fork if method needs to re-arm all fds from scratch */ 745/* usually called after fork if backend needs to re-arm all fds from scratch */
538static void 746static void noinline
539fd_rearm_all (EV_P) 747fd_rearm_all (EV_P)
540{ 748{
541 int fd; 749 int fd;
542 750
543 /* this should be highly optimised to not do anything but set a flag */
544 for (fd = 0; fd < anfdmax; ++fd) 751 for (fd = 0; fd < anfdmax; ++fd)
545 if (anfds [fd].events) 752 if (anfds [fd].events)
546 { 753 {
547 anfds [fd].events = 0; 754 anfds [fd].events = 0;
548 fd_change (EV_A_ fd); 755 fd_change (EV_A_ fd, EV_IOFDSET | 1);
549 } 756 }
550} 757}
551 758
552/*****************************************************************************/ 759/*****************************************************************************/
553 760
554static void 761/* towards the root */
762void inline_speed
555upheap (WT *heap, int k) 763upheap (WT *heap, int k)
556{ 764{
557 WT w = heap [k]; 765 WT w = heap [k];
558 766
559 while (k && heap [k >> 1]->at > w->at) 767 for (;;)
560 { 768 {
769 int p = k >> 1;
770
771 /* maybe we could use a dummy element at heap [0]? */
772 if (!p || heap [p]->at <= w->at)
773 break;
774
561 heap [k] = heap [k >> 1]; 775 heap [k] = heap [p];
562 ((W)heap [k])->active = k + 1; 776 ((W)heap [k])->active = k;
563 k >>= 1; 777 k = p;
564 } 778 }
565 779
566 heap [k] = w; 780 heap [k] = w;
567 ((W)heap [k])->active = k + 1; 781 ((W)heap [k])->active = k;
568
569} 782}
570 783
571static void 784/* away from the root */
785void inline_speed
572downheap (WT *heap, int N, int k) 786downheap (WT *heap, int N, int k)
573{ 787{
574 WT w = heap [k]; 788 WT w = heap [k];
575 789
576 while (k < (N >> 1)) 790 for (;;)
577 { 791 {
578 int j = k << 1; 792 int c = k << 1;
579 793
580 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 794 if (c > N)
581 ++j;
582
583 if (w->at <= heap [j]->at)
584 break; 795 break;
585 796
797 c += c < N && heap [c]->at > heap [c + 1]->at
798 ? 1 : 0;
799
800 if (w->at <= heap [c]->at)
801 break;
802
586 heap [k] = heap [j]; 803 heap [k] = heap [c];
587 ((W)heap [k])->active = k + 1; 804 ((W)heap [k])->active = k;
805
588 k = j; 806 k = c;
589 } 807 }
590 808
591 heap [k] = w; 809 heap [k] = w;
592 ((W)heap [k])->active = k + 1; 810 ((W)heap [k])->active = k;
593} 811}
594 812
595inline void 813void inline_size
596adjustheap (WT *heap, int N, int k) 814adjustheap (WT *heap, int N, int k)
597{ 815{
598 upheap (heap, k); 816 upheap (heap, k);
599 downheap (heap, N, k); 817 downheap (heap, N, k);
600} 818}
… …
602/*****************************************************************************/ 820/*****************************************************************************/
603 821
604typedef struct 822typedef struct
605{ 823{
606 WL head; 824 WL head;
607 sig_atomic_t volatile gotsig; 825 EV_ATOMIC_T gotsig;
608} ANSIG; 826} ANSIG;
609 827
610static ANSIG *signals; 828static ANSIG *signals;
611static int signalmax; 829static int signalmax;
612 830
613static int sigpipe [2]; 831static EV_ATOMIC_T gotsig;
614static sig_atomic_t volatile gotsig;
615static struct ev_io sigev;
616 832
617static void 833void inline_size
618signals_init (ANSIG *base, int count) 834signals_init (ANSIG *base, int count)
619{ 835{
620 while (count--) 836 while (count--)
621 { 837 {
622 base->head = 0; 838 base->head = 0;
… …
624 840
625 ++base; 841 ++base;
626 } 842 }
627} 843}
628 844
629static void 845/*****************************************************************************/
630sighandler (int signum)
631{
632#if _WIN32
633 signal (signum, sighandler);
634#endif
635 846
636 signals [signum - 1].gotsig = 1; 847void inline_speed
637
638 if (!gotsig)
639 {
640 int old_errno = errno;
641 gotsig = 1;
642 write (sigpipe [1], &signum, 1);
643 errno = old_errno;
644 }
645}
646
647void
648ev_feed_signal_event (EV_P_ int signum)
649{
650 WL w;
651
652#if EV_MULTIPLICITY
653 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
654#endif
655
656 --signum;
657
658 if (signum < 0 || signum >= signalmax)
659 return;
660
661 signals [signum].gotsig = 0;
662
663 for (w = signals [signum].head; w; w = w->next)
664 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665}
666
667static void
668sigcb (EV_P_ struct ev_io *iow, int revents)
669{
670 int signum;
671
672 read (sigpipe [0], &revents, 1);
673 gotsig = 0;
674
675 for (signum = signalmax; signum--; )
676 if (signals [signum].gotsig)
677 ev_feed_signal_event (EV_A_ signum + 1);
678}
679
680static void
681fd_intern (int fd) 848fd_intern (int fd)
682{ 849{
683#ifdef _WIN32 850#ifdef _WIN32
684 int arg = 1; 851 int arg = 1;
685 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 852 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
687 fcntl (fd, F_SETFD, FD_CLOEXEC); 854 fcntl (fd, F_SETFD, FD_CLOEXEC);
688 fcntl (fd, F_SETFL, O_NONBLOCK); 855 fcntl (fd, F_SETFL, O_NONBLOCK);
689#endif 856#endif
690} 857}
691 858
859static void noinline
860evpipe_init (EV_P)
861{
862 if (!ev_is_active (&pipeev))
863 {
864#if EV_USE_EVENTFD
865 if ((evfd = eventfd (0, 0)) >= 0)
866 {
867 evpipe [0] = -1;
868 fd_intern (evfd);
869 ev_io_set (&pipeev, evfd, EV_READ);
870 }
871 else
872#endif
873 {
874 while (pipe (evpipe))
875 syserr ("(libev) error creating signal/async pipe");
876
877 fd_intern (evpipe [0]);
878 fd_intern (evpipe [1]);
879 ev_io_set (&pipeev, evpipe [0], EV_READ);
880 }
881
882 ev_io_start (EV_A_ &pipeev);
883 ev_unref (EV_A); /* watcher should not keep loop alive */
884 }
885}
886
887void inline_size
888evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889{
890 if (!*flag)
891 {
892 int old_errno = errno; /* save errno because write might clobber it */
893
894 *flag = 1;
895
896#if EV_USE_EVENTFD
897 if (evfd >= 0)
898 {
899 uint64_t counter = 1;
900 write (evfd, &counter, sizeof (uint64_t));
901 }
902 else
903#endif
904 write (evpipe [1], &old_errno, 1);
905
906 errno = old_errno;
907 }
908}
909
692static void 910static void
693siginit (EV_P) 911pipecb (EV_P_ ev_io *iow, int revents)
694{ 912{
695 fd_intern (sigpipe [0]); 913#if EV_USE_EVENTFD
696 fd_intern (sigpipe [1]); 914 if (evfd >= 0)
915 {
916 uint64_t counter = 1;
917 read (evfd, &counter, sizeof (uint64_t));
918 }
919 else
920#endif
921 {
922 char dummy;
923 read (evpipe [0], &dummy, 1);
924 }
697 925
698 ev_io_set (&sigev, sigpipe [0], EV_READ); 926 if (gotsig && ev_is_default_loop (EV_A))
699 ev_io_start (EV_A_ &sigev); 927 {
700 ev_unref (EV_A); /* child watcher should not keep loop alive */ 928 int signum;
929 gotsig = 0;
930
931 for (signum = signalmax; signum--; )
932 if (signals [signum].gotsig)
933 ev_feed_signal_event (EV_A_ signum + 1);
934 }
935
936#if EV_ASYNC_ENABLE
937 if (gotasync)
938 {
939 int i;
940 gotasync = 0;
941
942 for (i = asynccnt; i--; )
943 if (asyncs [i]->sent)
944 {
945 asyncs [i]->sent = 0;
946 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
947 }
948 }
949#endif
701} 950}
702 951
703/*****************************************************************************/ 952/*****************************************************************************/
704 953
705static struct ev_child *childs [PID_HASHSIZE]; 954static void
955ev_sighandler (int signum)
956{
957#if EV_MULTIPLICITY
958 struct ev_loop *loop = &default_loop_struct;
959#endif
960
961#if _WIN32
962 signal (signum, ev_sighandler);
963#endif
964
965 signals [signum - 1].gotsig = 1;
966 evpipe_write (EV_A_ &gotsig);
967}
968
969void noinline
970ev_feed_signal_event (EV_P_ int signum)
971{
972 WL w;
973
974#if EV_MULTIPLICITY
975 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
976#endif
977
978 --signum;
979
980 if (signum < 0 || signum >= signalmax)
981 return;
982
983 signals [signum].gotsig = 0;
984
985 for (w = signals [signum].head; w; w = w->next)
986 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987}
988
989/*****************************************************************************/
990
991static WL childs [EV_PID_HASHSIZE];
706 992
707#ifndef _WIN32 993#ifndef _WIN32
708 994
709static struct ev_signal childev; 995static ev_signal childev;
996
997#ifndef WIFCONTINUED
998# define WIFCONTINUED(status) 0
999#endif
1000
1001void inline_speed
1002child_reap (EV_P_ int chain, int pid, int status)
1003{
1004 ev_child *w;
1005 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1006
1007 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1008 {
1009 if ((w->pid == pid || !w->pid)
1010 && (!traced || (w->flags & 1)))
1011 {
1012 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1013 w->rpid = pid;
1014 w->rstatus = status;
1015 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1016 }
1017 }
1018}
710 1019
711#ifndef WCONTINUED 1020#ifndef WCONTINUED
712# define WCONTINUED 0 1021# define WCONTINUED 0
713#endif 1022#endif
714 1023
715static void 1024static void
716child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
717{
718 struct ev_child *w;
719
720 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
721 if (w->pid == pid || !w->pid)
722 {
723 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
724 w->rpid = pid;
725 w->rstatus = status;
726 ev_feed_event (EV_A_ (W)w, EV_CHILD);
727 }
728}
729
730static void
731childcb (EV_P_ struct ev_signal *sw, int revents) 1025childcb (EV_P_ ev_signal *sw, int revents)
732{ 1026{
733 int pid, status; 1027 int pid, status;
734 1028
1029 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1030 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736 { 1031 if (!WCONTINUED
1032 || errno != EINVAL
1033 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1034 return;
1035
737 /* make sure we are called again until all childs have been reaped */ 1036 /* make sure we are called again until all children have been reaped */
1037 /* we need to do it this way so that the callback gets called before we continue */
738 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1038 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739 1039
740 child_reap (EV_A_ sw, pid, pid, status); 1040 child_reap (EV_A_ pid, pid, status);
1041 if (EV_PID_HASHSIZE > 1)
741 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1042 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742 }
743} 1043}
744 1044
745#endif 1045#endif
746 1046
747/*****************************************************************************/ 1047/*****************************************************************************/
… …
773{ 1073{
774 return EV_VERSION_MINOR; 1074 return EV_VERSION_MINOR;
775} 1075}
776 1076
777/* return true if we are running with elevated privileges and should ignore env variables */ 1077/* return true if we are running with elevated privileges and should ignore env variables */
778static int 1078int inline_size
779enable_secure (void) 1079enable_secure (void)
780{ 1080{
781#ifdef _WIN32 1081#ifdef _WIN32
782 return 0; 1082 return 0;
783#else 1083#else
… …
785 || getgid () != getegid (); 1085 || getgid () != getegid ();
786#endif 1086#endif
787} 1087}
788 1088
789unsigned int 1089unsigned int
790ev_method (EV_P) 1090ev_supported_backends (void)
791{ 1091{
792 return method; 1092 unsigned int flags = 0;
793}
794 1093
795static void 1094 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1095 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1096 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1097 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1098 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1099
1100 return flags;
1101}
1102
1103unsigned int
1104ev_recommended_backends (void)
1105{
1106 unsigned int flags = ev_supported_backends ();
1107
1108#ifndef __NetBSD__
1109 /* kqueue is borked on everything but netbsd apparently */
1110 /* it usually doesn't work correctly on anything but sockets and pipes */
1111 flags &= ~EVBACKEND_KQUEUE;
1112#endif
1113#ifdef __APPLE__
1114 // flags &= ~EVBACKEND_KQUEUE; for documentation
1115 flags &= ~EVBACKEND_POLL;
1116#endif
1117
1118 return flags;
1119}
1120
1121unsigned int
1122ev_embeddable_backends (void)
1123{
1124 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1125
1126 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1127 /* please fix it and tell me how to detect the fix */
1128 flags &= ~EVBACKEND_EPOLL;
1129
1130 return flags;
1131}
1132
1133unsigned int
1134ev_backend (EV_P)
1135{
1136 return backend;
1137}
1138
1139unsigned int
1140ev_loop_count (EV_P)
1141{
1142 return loop_count;
1143}
1144
1145void
1146ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1147{
1148 io_blocktime = interval;
1149}
1150
1151void
1152ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1153{
1154 timeout_blocktime = interval;
1155}
1156
1157static void noinline
796loop_init (EV_P_ unsigned int flags) 1158loop_init (EV_P_ unsigned int flags)
797{ 1159{
798 if (!method) 1160 if (!backend)
799 { 1161 {
800#if EV_USE_MONOTONIC 1162#if EV_USE_MONOTONIC
801 { 1163 {
802 struct timespec ts; 1164 struct timespec ts;
803 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1165 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
804 have_monotonic = 1; 1166 have_monotonic = 1;
805 } 1167 }
806#endif 1168#endif
807 1169
808 ev_rt_now = ev_time (); 1170 ev_rt_now = ev_time ();
809 mn_now = get_clock (); 1171 mn_now = get_clock ();
810 now_floor = mn_now; 1172 now_floor = mn_now;
811 rtmn_diff = ev_rt_now - mn_now; 1173 rtmn_diff = ev_rt_now - mn_now;
812 1174
813 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1175 io_blocktime = 0.;
1176 timeout_blocktime = 0.;
1177 backend = 0;
1178 backend_fd = -1;
1179 gotasync = 0;
1180#if EV_USE_INOTIFY
1181 fs_fd = -2;
1182#endif
1183
1184 /* pid check not overridable via env */
1185#ifndef _WIN32
1186 if (flags & EVFLAG_FORKCHECK)
1187 curpid = getpid ();
1188#endif
1189
1190 if (!(flags & EVFLAG_NOENV)
1191 && !enable_secure ()
1192 && getenv ("LIBEV_FLAGS"))
814 flags = atoi (getenv ("LIBEV_FLAGS")); 1193 flags = atoi (getenv ("LIBEV_FLAGS"));
815 1194
816 if (!(flags & 0x0000ffff)) 1195 if (!(flags & 0x0000ffffU))
817 flags |= 0x0000ffff; 1196 flags |= ev_recommended_backends ();
818 1197
819 method = 0;
820#if EV_USE_PORT 1198#if EV_USE_PORT
821 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1199 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
822#endif 1200#endif
823#if EV_USE_KQUEUE 1201#if EV_USE_KQUEUE
824 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1202 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
825#endif 1203#endif
826#if EV_USE_EPOLL 1204#if EV_USE_EPOLL
827 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1205 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
828#endif 1206#endif
829#if EV_USE_POLL 1207#if EV_USE_POLL
830 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1208 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
831#endif 1209#endif
832#if EV_USE_SELECT 1210#if EV_USE_SELECT
833 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1211 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
834#endif 1212#endif
835 1213
836 ev_init (&sigev, sigcb); 1214 ev_init (&pipeev, pipecb);
837 ev_set_priority (&sigev, EV_MAXPRI); 1215 ev_set_priority (&pipeev, EV_MAXPRI);
838 } 1216 }
839} 1217}
840 1218
841static void 1219static void noinline
842loop_destroy (EV_P) 1220loop_destroy (EV_P)
843{ 1221{
844 int i; 1222 int i;
845 1223
1224 if (ev_is_active (&pipeev))
1225 {
1226 ev_ref (EV_A); /* signal watcher */
1227 ev_io_stop (EV_A_ &pipeev);
1228
1229#if EV_USE_EVENTFD
1230 if (evfd >= 0)
1231 close (evfd);
1232#endif
1233
1234 if (evpipe [0] >= 0)
1235 {
1236 close (evpipe [0]);
1237 close (evpipe [1]);
1238 }
1239 }
1240
1241#if EV_USE_INOTIFY
1242 if (fs_fd >= 0)
1243 close (fs_fd);
1244#endif
1245
1246 if (backend_fd >= 0)
1247 close (backend_fd);
1248
846#if EV_USE_PORT 1249#if EV_USE_PORT
847 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1250 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
848#endif 1251#endif
849#if EV_USE_KQUEUE 1252#if EV_USE_KQUEUE
850 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1253 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
851#endif 1254#endif
852#if EV_USE_EPOLL 1255#if EV_USE_EPOLL
853 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1256 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
854#endif 1257#endif
855#if EV_USE_POLL 1258#if EV_USE_POLL
856 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1259 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
857#endif 1260#endif
858#if EV_USE_SELECT 1261#if EV_USE_SELECT
859 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1262 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
860#endif 1263#endif
861 1264
862 for (i = NUMPRI; i--; ) 1265 for (i = NUMPRI; i--; )
1266 {
863 array_free (pending, [i]); 1267 array_free (pending, [i]);
1268#if EV_IDLE_ENABLE
1269 array_free (idle, [i]);
1270#endif
1271 }
1272
1273 ev_free (anfds); anfdmax = 0;
864 1274
865 /* have to use the microsoft-never-gets-it-right macro */ 1275 /* have to use the microsoft-never-gets-it-right macro */
866 array_free (fdchange, EMPTY0); 1276 array_free (fdchange, EMPTY);
867 array_free (timer, EMPTY0); 1277 array_free (timer, EMPTY);
868#if EV_PERIODICS 1278#if EV_PERIODIC_ENABLE
869 array_free (periodic, EMPTY0); 1279 array_free (periodic, EMPTY);
870#endif 1280#endif
1281#if EV_FORK_ENABLE
871 array_free (idle, EMPTY0); 1282 array_free (fork, EMPTY);
1283#endif
872 array_free (prepare, EMPTY0); 1284 array_free (prepare, EMPTY);
873 array_free (check, EMPTY0); 1285 array_free (check, EMPTY);
1286#if EV_ASYNC_ENABLE
1287 array_free (async, EMPTY);
1288#endif
874 1289
875 method = 0; 1290 backend = 0;
876} 1291}
877 1292
878static void 1293#if EV_USE_INOTIFY
1294void inline_size infy_fork (EV_P);
1295#endif
1296
1297void inline_size
879loop_fork (EV_P) 1298loop_fork (EV_P)
880{ 1299{
881#if EV_USE_PORT 1300#if EV_USE_PORT
882 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1301 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
883#endif 1302#endif
884#if EV_USE_KQUEUE 1303#if EV_USE_KQUEUE
885 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1304 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
886#endif 1305#endif
887#if EV_USE_EPOLL 1306#if EV_USE_EPOLL
888 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1307 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
889#endif 1308#endif
1309#if EV_USE_INOTIFY
1310 infy_fork (EV_A);
1311#endif
890 1312
891 if (ev_is_active (&sigev)) 1313 if (ev_is_active (&pipeev))
892 { 1314 {
893 /* default loop */ 1315 /* this "locks" the handlers against writing to the pipe */
1316 /* while we modify the fd vars */
1317 gotsig = 1;
1318#if EV_ASYNC_ENABLE
1319 gotasync = 1;
1320#endif
894 1321
895 ev_ref (EV_A); 1322 ev_ref (EV_A);
896 ev_io_stop (EV_A_ &sigev); 1323 ev_io_stop (EV_A_ &pipeev);
1324
1325#if EV_USE_EVENTFD
1326 if (evfd >= 0)
1327 close (evfd);
1328#endif
1329
1330 if (evpipe [0] >= 0)
1331 {
897 close (sigpipe [0]); 1332 close (evpipe [0]);
898 close (sigpipe [1]); 1333 close (evpipe [1]);
1334 }
899 1335
900 while (pipe (sigpipe))
901 syserr ("(libev) error creating pipe");
902
903 siginit (EV_A); 1336 evpipe_init (EV_A);
1337 /* now iterate over everything, in case we missed something */
1338 pipecb (EV_A_ &pipeev, EV_READ);
904 } 1339 }
905 1340
906 postfork = 0; 1341 postfork = 0;
907} 1342}
908 1343
… …
914 1349
915 memset (loop, 0, sizeof (struct ev_loop)); 1350 memset (loop, 0, sizeof (struct ev_loop));
916 1351
917 loop_init (EV_A_ flags); 1352 loop_init (EV_A_ flags);
918 1353
919 if (ev_method (EV_A)) 1354 if (ev_backend (EV_A))
920 return loop; 1355 return loop;
921 1356
922 return 0; 1357 return 0;
923} 1358}
924 1359
… …
930} 1365}
931 1366
932void 1367void
933ev_loop_fork (EV_P) 1368ev_loop_fork (EV_P)
934{ 1369{
935 postfork = 1; 1370 postfork = 1; /* must be in line with ev_default_fork */
936} 1371}
937 1372
938#endif 1373#endif
939 1374
940#if EV_MULTIPLICITY 1375#if EV_MULTIPLICITY
… …
943#else 1378#else
944int 1379int
945ev_default_loop (unsigned int flags) 1380ev_default_loop (unsigned int flags)
946#endif 1381#endif
947{ 1382{
948 if (sigpipe [0] == sigpipe [1])
949 if (pipe (sigpipe))
950 return 0;
951
952 if (!ev_default_loop_ptr) 1383 if (!ev_default_loop_ptr)
953 { 1384 {
954#if EV_MULTIPLICITY 1385#if EV_MULTIPLICITY
955 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1386 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
956#else 1387#else
957 ev_default_loop_ptr = 1; 1388 ev_default_loop_ptr = 1;
958#endif 1389#endif
959 1390
960 loop_init (EV_A_ flags); 1391 loop_init (EV_A_ flags);
961 1392
962 if (ev_method (EV_A)) 1393 if (ev_backend (EV_A))
963 { 1394 {
964 siginit (EV_A);
965
966#ifndef _WIN32 1395#ifndef _WIN32
967 ev_signal_init (&childev, childcb, SIGCHLD); 1396 ev_signal_init (&childev, childcb, SIGCHLD);
968 ev_set_priority (&childev, EV_MAXPRI); 1397 ev_set_priority (&childev, EV_MAXPRI);
969 ev_signal_start (EV_A_ &childev); 1398 ev_signal_start (EV_A_ &childev);
970 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1399 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
987#ifndef _WIN32 1416#ifndef _WIN32
988 ev_ref (EV_A); /* child watcher */ 1417 ev_ref (EV_A); /* child watcher */
989 ev_signal_stop (EV_A_ &childev); 1418 ev_signal_stop (EV_A_ &childev);
990#endif 1419#endif
991 1420
992 ev_ref (EV_A); /* signal watcher */
993 ev_io_stop (EV_A_ &sigev);
994
995 close (sigpipe [0]); sigpipe [0] = 0;
996 close (sigpipe [1]); sigpipe [1] = 0;
997
998 loop_destroy (EV_A); 1421 loop_destroy (EV_A);
999} 1422}
1000 1423
1001void 1424void
1002ev_default_fork (void) 1425ev_default_fork (void)
1003{ 1426{
1004#if EV_MULTIPLICITY 1427#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr; 1428 struct ev_loop *loop = ev_default_loop_ptr;
1006#endif 1429#endif
1007 1430
1008 if (method) 1431 if (backend)
1009 postfork = 1; 1432 postfork = 1; /* must be in line with ev_loop_fork */
1010} 1433}
1011 1434
1012/*****************************************************************************/ 1435/*****************************************************************************/
1013 1436
1014static int 1437void
1015any_pending (EV_P) 1438ev_invoke (EV_P_ void *w, int revents)
1016{ 1439{
1017 int pri; 1440 EV_CB_INVOKE ((W)w, revents);
1018
1019 for (pri = NUMPRI; pri--; )
1020 if (pendingcnt [pri])
1021 return 1;
1022
1023 return 0;
1024} 1441}
1025 1442
1026inline void 1443void inline_speed
1027call_pending (EV_P) 1444call_pending (EV_P)
1028{ 1445{
1029 int pri; 1446 int pri;
1030 1447
1031 for (pri = NUMPRI; pri--; ) 1448 for (pri = NUMPRI; pri--; )
… …
1033 { 1450 {
1034 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1451 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1035 1452
1036 if (expect_true (p->w)) 1453 if (expect_true (p->w))
1037 { 1454 {
1455 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1456
1038 p->w->pending = 0; 1457 p->w->pending = 0;
1039 EV_CB_INVOKE (p->w, p->events); 1458 EV_CB_INVOKE (p->w, p->events);
1040 } 1459 }
1041 } 1460 }
1042} 1461}
1043 1462
1044inline void 1463void inline_size
1045timers_reify (EV_P) 1464timers_reify (EV_P)
1046{ 1465{
1047 while (timercnt && ((WT)timers [0])->at <= mn_now) 1466 while (timercnt && ev_at (timers [1]) <= mn_now)
1048 { 1467 {
1049 struct ev_timer *w = timers [0]; 1468 ev_timer *w = (ev_timer *)timers [1];
1050 1469
1051 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1470 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1052 1471
1053 /* first reschedule or stop timer */ 1472 /* first reschedule or stop timer */
1054 if (w->repeat) 1473 if (w->repeat)
1055 { 1474 {
1056 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1475 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1057 1476
1058 ((WT)w)->at += w->repeat; 1477 ev_at (w) += w->repeat;
1059 if (((WT)w)->at < mn_now) 1478 if (ev_at (w) < mn_now)
1060 ((WT)w)->at = mn_now; 1479 ev_at (w) = mn_now;
1061 1480
1062 downheap ((WT *)timers, timercnt, 0); 1481 downheap (timers, timercnt, 1);
1063 } 1482 }
1064 else 1483 else
1065 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1484 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1066 1485
1067 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1486 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1068 } 1487 }
1069} 1488}
1070 1489
1071#if EV_PERIODICS 1490#if EV_PERIODIC_ENABLE
1072inline void 1491void inline_size
1073periodics_reify (EV_P) 1492periodics_reify (EV_P)
1074{ 1493{
1075 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1494 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1076 { 1495 {
1077 struct ev_periodic *w = periodics [0]; 1496 ev_periodic *w = (ev_periodic *)periodics [1];
1078 1497
1079 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1498 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1080 1499
1081 /* first reschedule or stop timer */ 1500 /* first reschedule or stop timer */
1082 if (w->reschedule_cb) 1501 if (w->reschedule_cb)
1083 { 1502 {
1084 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1503 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1085 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1504 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1086 downheap ((WT *)periodics, periodiccnt, 0); 1505 downheap (periodics, periodiccnt, 1);
1087 } 1506 }
1088 else if (w->interval) 1507 else if (w->interval)
1089 { 1508 {
1090 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1509 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1510 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1091 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1511 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1092 downheap ((WT *)periodics, periodiccnt, 0); 1512 downheap (periodics, periodiccnt, 1);
1093 } 1513 }
1094 else 1514 else
1095 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1515 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1096 1516
1097 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1517 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1098 } 1518 }
1099} 1519}
1100 1520
1101static void 1521static void noinline
1102periodics_reschedule (EV_P) 1522periodics_reschedule (EV_P)
1103{ 1523{
1104 int i; 1524 int i;
1105 1525
1106 /* adjust periodics after time jump */ 1526 /* adjust periodics after time jump */
1107 for (i = 0; i < periodiccnt; ++i) 1527 for (i = 0; i < periodiccnt; ++i)
1108 { 1528 {
1109 struct ev_periodic *w = periodics [i]; 1529 ev_periodic *w = (ev_periodic *)periodics [i];
1110 1530
1111 if (w->reschedule_cb) 1531 if (w->reschedule_cb)
1112 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1532 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1113 else if (w->interval) 1533 else if (w->interval)
1114 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1534 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1115 } 1535 }
1116 1536
1117 /* now rebuild the heap */ 1537 /* now rebuild the heap */
1118 for (i = periodiccnt >> 1; i--; ) 1538 for (i = periodiccnt >> 1; i--; )
1119 downheap ((WT *)periodics, periodiccnt, i); 1539 downheap (periodics, periodiccnt, i);
1120} 1540}
1121#endif 1541#endif
1122 1542
1123inline int 1543#if EV_IDLE_ENABLE
1124time_update_monotonic (EV_P) 1544void inline_size
1545idle_reify (EV_P)
1125{ 1546{
1547 if (expect_false (idleall))
1548 {
1549 int pri;
1550
1551 for (pri = NUMPRI; pri--; )
1552 {
1553 if (pendingcnt [pri])
1554 break;
1555
1556 if (idlecnt [pri])
1557 {
1558 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1559 break;
1560 }
1561 }
1562 }
1563}
1564#endif
1565
1566void inline_speed
1567time_update (EV_P_ ev_tstamp max_block)
1568{
1569 int i;
1570
1571#if EV_USE_MONOTONIC
1572 if (expect_true (have_monotonic))
1573 {
1574 ev_tstamp odiff = rtmn_diff;
1575
1126 mn_now = get_clock (); 1576 mn_now = get_clock ();
1127 1577
1578 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1579 /* interpolate in the meantime */
1128 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1580 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1129 { 1581 {
1130 ev_rt_now = rtmn_diff + mn_now; 1582 ev_rt_now = rtmn_diff + mn_now;
1131 return 0; 1583 return;
1132 } 1584 }
1133 else 1585
1134 {
1135 now_floor = mn_now; 1586 now_floor = mn_now;
1136 ev_rt_now = ev_time (); 1587 ev_rt_now = ev_time ();
1137 return 1;
1138 }
1139}
1140 1588
1141inline void 1589 /* loop a few times, before making important decisions.
1142time_update (EV_P) 1590 * on the choice of "4": one iteration isn't enough,
1143{ 1591 * in case we get preempted during the calls to
1144 int i; 1592 * ev_time and get_clock. a second call is almost guaranteed
1145 1593 * to succeed in that case, though. and looping a few more times
1146#if EV_USE_MONOTONIC 1594 * doesn't hurt either as we only do this on time-jumps or
1147 if (expect_true (have_monotonic)) 1595 * in the unlikely event of having been preempted here.
1148 { 1596 */
1149 if (time_update_monotonic (EV_A)) 1597 for (i = 4; --i; )
1150 { 1598 {
1151 ev_tstamp odiff = rtmn_diff;
1152
1153 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1154 {
1155 rtmn_diff = ev_rt_now - mn_now; 1599 rtmn_diff = ev_rt_now - mn_now;
1156 1600
1157 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1601 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1158 return; /* all is well */ 1602 return; /* all is well */
1159 1603
1160 ev_rt_now = ev_time (); 1604 ev_rt_now = ev_time ();
1161 mn_now = get_clock (); 1605 mn_now = get_clock ();
1162 now_floor = mn_now; 1606 now_floor = mn_now;
1163 } 1607 }
1164 1608
1165# if EV_PERIODICS 1609# if EV_PERIODIC_ENABLE
1610 periodics_reschedule (EV_A);
1611# endif
1612 /* no timer adjustment, as the monotonic clock doesn't jump */
1613 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1614 }
1615 else
1616#endif
1617 {
1618 ev_rt_now = ev_time ();
1619
1620 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1621 {
1622#if EV_PERIODIC_ENABLE
1166 periodics_reschedule (EV_A); 1623 periodics_reschedule (EV_A);
1167# endif 1624#endif
1168 /* no timer adjustment, as the monotonic clock doesn't jump */ 1625 /* adjust timers. this is easy, as the offset is the same for all of them */
1169 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1626 for (i = 1; i <= timercnt; ++i)
1627 ev_at (timers [i]) += ev_rt_now - mn_now;
1170 } 1628 }
1171 }
1172 else
1173#endif
1174 {
1175 ev_rt_now = ev_time ();
1176
1177 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1178 {
1179#if EV_PERIODICS
1180 periodics_reschedule (EV_A);
1181#endif
1182
1183 /* adjust timers. this is easy, as the offset is the same for all */
1184 for (i = 0; i < timercnt; ++i)
1185 ((WT)timers [i])->at += ev_rt_now - mn_now;
1186 }
1187 1629
1188 mn_now = ev_rt_now; 1630 mn_now = ev_rt_now;
1189 } 1631 }
1190} 1632}
1191 1633
… …
1204static int loop_done; 1646static int loop_done;
1205 1647
1206void 1648void
1207ev_loop (EV_P_ int flags) 1649ev_loop (EV_P_ int flags)
1208{ 1650{
1209 double block; 1651 loop_done = EVUNLOOP_CANCEL;
1210 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1211 1652
1212 while (activecnt) 1653 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1654
1655 do
1213 { 1656 {
1657#ifndef _WIN32
1658 if (expect_false (curpid)) /* penalise the forking check even more */
1659 if (expect_false (getpid () != curpid))
1660 {
1661 curpid = getpid ();
1662 postfork = 1;
1663 }
1664#endif
1665
1666#if EV_FORK_ENABLE
1667 /* we might have forked, so queue fork handlers */
1668 if (expect_false (postfork))
1669 if (forkcnt)
1670 {
1671 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1672 call_pending (EV_A);
1673 }
1674#endif
1675
1214 /* queue check watchers (and execute them) */ 1676 /* queue prepare watchers (and execute them) */
1215 if (expect_false (preparecnt)) 1677 if (expect_false (preparecnt))
1216 { 1678 {
1217 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1679 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1218 call_pending (EV_A); 1680 call_pending (EV_A);
1219 } 1681 }
1220 1682
1683 if (expect_false (!activecnt))
1684 break;
1685
1221 /* we might have forked, so reify kernel state if necessary */ 1686 /* we might have forked, so reify kernel state if necessary */
1222 if (expect_false (postfork)) 1687 if (expect_false (postfork))
1223 loop_fork (EV_A); 1688 loop_fork (EV_A);
1224 1689
1225 /* update fd-related kernel structures */ 1690 /* update fd-related kernel structures */
1226 fd_reify (EV_A); 1691 fd_reify (EV_A);
1227 1692
1228 /* calculate blocking time */ 1693 /* calculate blocking time */
1694 {
1695 ev_tstamp waittime = 0.;
1696 ev_tstamp sleeptime = 0.;
1229 1697
1230 /* we only need this for !monotonic clock or timers, but as we basically 1698 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1231 always have timers, we just calculate it always */
1232#if EV_USE_MONOTONIC
1233 if (expect_true (have_monotonic))
1234 time_update_monotonic (EV_A);
1235 else
1236#endif
1237 { 1699 {
1238 ev_rt_now = ev_time (); 1700 /* update time to cancel out callback processing overhead */
1239 mn_now = ev_rt_now; 1701 time_update (EV_A_ 1e100);
1240 }
1241 1702
1242 if (flags & EVLOOP_NONBLOCK || idlecnt)
1243 block = 0.;
1244 else
1245 {
1246 block = MAX_BLOCKTIME; 1703 waittime = MAX_BLOCKTIME;
1247 1704
1248 if (timercnt) 1705 if (timercnt)
1249 { 1706 {
1250 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1707 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1251 if (block > to) block = to; 1708 if (waittime > to) waittime = to;
1252 } 1709 }
1253 1710
1254#if EV_PERIODICS 1711#if EV_PERIODIC_ENABLE
1255 if (periodiccnt) 1712 if (periodiccnt)
1256 { 1713 {
1257 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1714 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1258 if (block > to) block = to; 1715 if (waittime > to) waittime = to;
1259 } 1716 }
1260#endif 1717#endif
1261 1718
1262 if (expect_false (block < 0.)) block = 0.; 1719 if (expect_false (waittime < timeout_blocktime))
1720 waittime = timeout_blocktime;
1721
1722 sleeptime = waittime - backend_fudge;
1723
1724 if (expect_true (sleeptime > io_blocktime))
1725 sleeptime = io_blocktime;
1726
1727 if (sleeptime)
1728 {
1729 ev_sleep (sleeptime);
1730 waittime -= sleeptime;
1731 }
1263 } 1732 }
1264 1733
1265 method_poll (EV_A_ block); 1734 ++loop_count;
1735 backend_poll (EV_A_ waittime);
1266 1736
1267 /* update ev_rt_now, do magic */ 1737 /* update ev_rt_now, do magic */
1268 time_update (EV_A); 1738 time_update (EV_A_ waittime + sleeptime);
1739 }
1269 1740
1270 /* queue pending timers and reschedule them */ 1741 /* queue pending timers and reschedule them */
1271 timers_reify (EV_A); /* relative timers called last */ 1742 timers_reify (EV_A); /* relative timers called last */
1272#if EV_PERIODICS 1743#if EV_PERIODIC_ENABLE
1273 periodics_reify (EV_A); /* absolute timers called first */ 1744 periodics_reify (EV_A); /* absolute timers called first */
1274#endif 1745#endif
1275 1746
1747#if EV_IDLE_ENABLE
1276 /* queue idle watchers unless io or timers are pending */ 1748 /* queue idle watchers unless other events are pending */
1277 if (idlecnt && !any_pending (EV_A)) 1749 idle_reify (EV_A);
1278 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1750#endif
1279 1751
1280 /* queue check watchers, to be executed first */ 1752 /* queue check watchers, to be executed first */
1281 if (expect_false (checkcnt)) 1753 if (expect_false (checkcnt))
1282 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1754 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1283 1755
1284 call_pending (EV_A); 1756 call_pending (EV_A);
1285
1286 if (expect_false (loop_done))
1287 break;
1288 } 1757 }
1758 while (expect_true (
1759 activecnt
1760 && !loop_done
1761 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1762 ));
1289 1763
1290 if (loop_done != 2) 1764 if (loop_done == EVUNLOOP_ONE)
1291 loop_done = 0; 1765 loop_done = EVUNLOOP_CANCEL;
1292} 1766}
1293 1767
1294void 1768void
1295ev_unloop (EV_P_ int how) 1769ev_unloop (EV_P_ int how)
1296{ 1770{
1297 loop_done = how; 1771 loop_done = how;
1298} 1772}
1299 1773
1300/*****************************************************************************/ 1774/*****************************************************************************/
1301 1775
1302inline void 1776void inline_size
1303wlist_add (WL *head, WL elem) 1777wlist_add (WL *head, WL elem)
1304{ 1778{
1305 elem->next = *head; 1779 elem->next = *head;
1306 *head = elem; 1780 *head = elem;
1307} 1781}
1308 1782
1309inline void 1783void inline_size
1310wlist_del (WL *head, WL elem) 1784wlist_del (WL *head, WL elem)
1311{ 1785{
1312 while (*head) 1786 while (*head)
1313 { 1787 {
1314 if (*head == elem) 1788 if (*head == elem)
… …
1319 1793
1320 head = &(*head)->next; 1794 head = &(*head)->next;
1321 } 1795 }
1322} 1796}
1323 1797
1324inline void 1798void inline_speed
1325ev_clear_pending (EV_P_ W w) 1799clear_pending (EV_P_ W w)
1326{ 1800{
1327 if (w->pending) 1801 if (w->pending)
1328 { 1802 {
1329 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1803 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1330 w->pending = 0; 1804 w->pending = 0;
1331 } 1805 }
1332} 1806}
1333 1807
1334inline void 1808int
1809ev_clear_pending (EV_P_ void *w)
1810{
1811 W w_ = (W)w;
1812 int pending = w_->pending;
1813
1814 if (expect_true (pending))
1815 {
1816 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1817 w_->pending = 0;
1818 p->w = 0;
1819 return p->events;
1820 }
1821 else
1822 return 0;
1823}
1824
1825void inline_size
1826pri_adjust (EV_P_ W w)
1827{
1828 int pri = w->priority;
1829 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1830 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1831 w->priority = pri;
1832}
1833
1834void inline_speed
1335ev_start (EV_P_ W w, int active) 1835ev_start (EV_P_ W w, int active)
1336{ 1836{
1337 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1837 pri_adjust (EV_A_ w);
1338 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1339
1340 w->active = active; 1838 w->active = active;
1341 ev_ref (EV_A); 1839 ev_ref (EV_A);
1342} 1840}
1343 1841
1344inline void 1842void inline_size
1345ev_stop (EV_P_ W w) 1843ev_stop (EV_P_ W w)
1346{ 1844{
1347 ev_unref (EV_A); 1845 ev_unref (EV_A);
1348 w->active = 0; 1846 w->active = 0;
1349} 1847}
1350 1848
1351/*****************************************************************************/ 1849/*****************************************************************************/
1352 1850
1353void 1851void noinline
1354ev_io_start (EV_P_ struct ev_io *w) 1852ev_io_start (EV_P_ ev_io *w)
1355{ 1853{
1356 int fd = w->fd; 1854 int fd = w->fd;
1357 1855
1358 if (expect_false (ev_is_active (w))) 1856 if (expect_false (ev_is_active (w)))
1359 return; 1857 return;
1360 1858
1361 assert (("ev_io_start called with negative fd", fd >= 0)); 1859 assert (("ev_io_start called with negative fd", fd >= 0));
1362 1860
1363 ev_start (EV_A_ (W)w, 1); 1861 ev_start (EV_A_ (W)w, 1);
1364 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1862 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1365 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1863 wlist_add (&anfds[fd].head, (WL)w);
1366 1864
1367 fd_change (EV_A_ fd); 1865 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1866 w->events &= ~EV_IOFDSET;
1368} 1867}
1369 1868
1370void 1869void noinline
1371ev_io_stop (EV_P_ struct ev_io *w) 1870ev_io_stop (EV_P_ ev_io *w)
1372{ 1871{
1373 ev_clear_pending (EV_A_ (W)w); 1872 clear_pending (EV_A_ (W)w);
1374 if (expect_false (!ev_is_active (w))) 1873 if (expect_false (!ev_is_active (w)))
1375 return; 1874 return;
1376 1875
1377 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1876 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1378 1877
1379 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1878 wlist_del (&anfds[w->fd].head, (WL)w);
1380 ev_stop (EV_A_ (W)w); 1879 ev_stop (EV_A_ (W)w);
1381 1880
1382 fd_change (EV_A_ w->fd); 1881 fd_change (EV_A_ w->fd, 1);
1383} 1882}
1384 1883
1385void 1884void noinline
1386ev_timer_start (EV_P_ struct ev_timer *w) 1885ev_timer_start (EV_P_ ev_timer *w)
1387{ 1886{
1388 if (expect_false (ev_is_active (w))) 1887 if (expect_false (ev_is_active (w)))
1389 return; 1888 return;
1390 1889
1391 ((WT)w)->at += mn_now; 1890 ev_at (w) += mn_now;
1392 1891
1393 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1892 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1394 1893
1395 ev_start (EV_A_ (W)w, ++timercnt); 1894 ev_start (EV_A_ (W)w, ++timercnt);
1396 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1895 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1397 timers [timercnt - 1] = w; 1896 timers [timercnt] = (WT)w;
1398 upheap ((WT *)timers, timercnt - 1); 1897 upheap (timers, timercnt);
1399 1898
1400 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1899 /*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1401} 1900}
1402 1901
1403void 1902void noinline
1404ev_timer_stop (EV_P_ struct ev_timer *w) 1903ev_timer_stop (EV_P_ ev_timer *w)
1405{ 1904{
1406 ev_clear_pending (EV_A_ (W)w); 1905 clear_pending (EV_A_ (W)w);
1407 if (expect_false (!ev_is_active (w))) 1906 if (expect_false (!ev_is_active (w)))
1408 return; 1907 return;
1409 1908
1410 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1909 assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1411 1910
1911 {
1912 int active = ((W)w)->active;
1913
1412 if (expect_true (((W)w)->active < timercnt--)) 1914 if (expect_true (active < timercnt))
1413 { 1915 {
1414 timers [((W)w)->active - 1] = timers [timercnt]; 1916 timers [active] = timers [timercnt];
1415 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1917 adjustheap (timers, timercnt, active);
1416 } 1918 }
1417 1919
1418 ((WT)w)->at -= mn_now; 1920 --timercnt;
1921 }
1922
1923 ev_at (w) -= mn_now;
1419 1924
1420 ev_stop (EV_A_ (W)w); 1925 ev_stop (EV_A_ (W)w);
1421} 1926}
1422 1927
1423void 1928void noinline
1424ev_timer_again (EV_P_ struct ev_timer *w) 1929ev_timer_again (EV_P_ ev_timer *w)
1425{ 1930{
1426 if (ev_is_active (w)) 1931 if (ev_is_active (w))
1427 { 1932 {
1428 if (w->repeat) 1933 if (w->repeat)
1429 { 1934 {
1430 ((WT)w)->at = mn_now + w->repeat; 1935 ev_at (w) = mn_now + w->repeat;
1431 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1936 adjustheap (timers, timercnt, ((W)w)->active);
1432 } 1937 }
1433 else 1938 else
1434 ev_timer_stop (EV_A_ w); 1939 ev_timer_stop (EV_A_ w);
1435 } 1940 }
1436 else if (w->repeat) 1941 else if (w->repeat)
… …
1438 w->at = w->repeat; 1943 w->at = w->repeat;
1439 ev_timer_start (EV_A_ w); 1944 ev_timer_start (EV_A_ w);
1440 } 1945 }
1441} 1946}
1442 1947
1443#if EV_PERIODICS 1948#if EV_PERIODIC_ENABLE
1444void 1949void noinline
1445ev_periodic_start (EV_P_ struct ev_periodic *w) 1950ev_periodic_start (EV_P_ ev_periodic *w)
1446{ 1951{
1447 if (expect_false (ev_is_active (w))) 1952 if (expect_false (ev_is_active (w)))
1448 return; 1953 return;
1449 1954
1450 if (w->reschedule_cb) 1955 if (w->reschedule_cb)
1451 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1956 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1452 else if (w->interval) 1957 else if (w->interval)
1453 { 1958 {
1454 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1959 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1455 /* this formula differs from the one in periodic_reify because we do not always round up */ 1960 /* this formula differs from the one in periodic_reify because we do not always round up */
1456 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1961 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1457 } 1962 }
1963 else
1964 ev_at (w) = w->offset;
1458 1965
1459 ev_start (EV_A_ (W)w, ++periodiccnt); 1966 ev_start (EV_A_ (W)w, ++periodiccnt);
1460 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1967 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1461 periodics [periodiccnt - 1] = w; 1968 periodics [periodiccnt] = (WT)w;
1462 upheap ((WT *)periodics, periodiccnt - 1); 1969 upheap (periodics, periodiccnt);
1463 1970
1464 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1971 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1465} 1972}
1466 1973
1467void 1974void noinline
1468ev_periodic_stop (EV_P_ struct ev_periodic *w) 1975ev_periodic_stop (EV_P_ ev_periodic *w)
1469{ 1976{
1470 ev_clear_pending (EV_A_ (W)w); 1977 clear_pending (EV_A_ (W)w);
1471 if (expect_false (!ev_is_active (w))) 1978 if (expect_false (!ev_is_active (w)))
1472 return; 1979 return;
1473 1980
1474 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1981 assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1475 1982
1983 {
1984 int active = ((W)w)->active;
1985
1476 if (expect_true (((W)w)->active < periodiccnt--)) 1986 if (expect_true (active < periodiccnt))
1477 { 1987 {
1478 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1988 periodics [active] = periodics [periodiccnt];
1479 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1989 adjustheap (periodics, periodiccnt, active);
1480 } 1990 }
1991
1992 --periodiccnt;
1993 }
1481 1994
1482 ev_stop (EV_A_ (W)w); 1995 ev_stop (EV_A_ (W)w);
1483} 1996}
1484 1997
1485void 1998void noinline
1486ev_periodic_again (EV_P_ struct ev_periodic *w) 1999ev_periodic_again (EV_P_ ev_periodic *w)
1487{ 2000{
1488 /* TODO: use adjustheap and recalculation */ 2001 /* TODO: use adjustheap and recalculation */
1489 ev_periodic_stop (EV_A_ w); 2002 ev_periodic_stop (EV_A_ w);
1490 ev_periodic_start (EV_A_ w); 2003 ev_periodic_start (EV_A_ w);
1491} 2004}
1492#endif 2005#endif
1493 2006
1494void
1495ev_idle_start (EV_P_ struct ev_idle *w)
1496{
1497 if (expect_false (ev_is_active (w)))
1498 return;
1499
1500 ev_start (EV_A_ (W)w, ++idlecnt);
1501 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1502 idles [idlecnt - 1] = w;
1503}
1504
1505void
1506ev_idle_stop (EV_P_ struct ev_idle *w)
1507{
1508 ev_clear_pending (EV_A_ (W)w);
1509 if (expect_false (!ev_is_active (w)))
1510 return;
1511
1512 idles [((W)w)->active - 1] = idles [--idlecnt];
1513 ev_stop (EV_A_ (W)w);
1514}
1515
1516void
1517ev_prepare_start (EV_P_ struct ev_prepare *w)
1518{
1519 if (expect_false (ev_is_active (w)))
1520 return;
1521
1522 ev_start (EV_A_ (W)w, ++preparecnt);
1523 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1524 prepares [preparecnt - 1] = w;
1525}
1526
1527void
1528ev_prepare_stop (EV_P_ struct ev_prepare *w)
1529{
1530 ev_clear_pending (EV_A_ (W)w);
1531 if (expect_false (!ev_is_active (w)))
1532 return;
1533
1534 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1535 ev_stop (EV_A_ (W)w);
1536}
1537
1538void
1539ev_check_start (EV_P_ struct ev_check *w)
1540{
1541 if (expect_false (ev_is_active (w)))
1542 return;
1543
1544 ev_start (EV_A_ (W)w, ++checkcnt);
1545 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1546 checks [checkcnt - 1] = w;
1547}
1548
1549void
1550ev_check_stop (EV_P_ struct ev_check *w)
1551{
1552 ev_clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w)))
1554 return;
1555
1556 checks [((W)w)->active - 1] = checks [--checkcnt];
1557 ev_stop (EV_A_ (W)w);
1558}
1559
1560#ifndef SA_RESTART 2007#ifndef SA_RESTART
1561# define SA_RESTART 0 2008# define SA_RESTART 0
1562#endif 2009#endif
1563 2010
1564void 2011void noinline
1565ev_signal_start (EV_P_ struct ev_signal *w) 2012ev_signal_start (EV_P_ ev_signal *w)
1566{ 2013{
1567#if EV_MULTIPLICITY 2014#if EV_MULTIPLICITY
1568 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2015 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1569#endif 2016#endif
1570 if (expect_false (ev_is_active (w))) 2017 if (expect_false (ev_is_active (w)))
1571 return; 2018 return;
1572 2019
1573 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2020 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1574 2021
2022 evpipe_init (EV_A);
2023
2024 {
2025#ifndef _WIN32
2026 sigset_t full, prev;
2027 sigfillset (&full);
2028 sigprocmask (SIG_SETMASK, &full, &prev);
2029#endif
2030
2031 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2032
2033#ifndef _WIN32
2034 sigprocmask (SIG_SETMASK, &prev, 0);
2035#endif
2036 }
2037
1575 ev_start (EV_A_ (W)w, 1); 2038 ev_start (EV_A_ (W)w, 1);
1576 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1577 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2039 wlist_add (&signals [w->signum - 1].head, (WL)w);
1578 2040
1579 if (!((WL)w)->next) 2041 if (!((WL)w)->next)
1580 { 2042 {
1581#if _WIN32 2043#if _WIN32
1582 signal (w->signum, sighandler); 2044 signal (w->signum, ev_sighandler);
1583#else 2045#else
1584 struct sigaction sa; 2046 struct sigaction sa;
1585 sa.sa_handler = sighandler; 2047 sa.sa_handler = ev_sighandler;
1586 sigfillset (&sa.sa_mask); 2048 sigfillset (&sa.sa_mask);
1587 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2049 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1588 sigaction (w->signum, &sa, 0); 2050 sigaction (w->signum, &sa, 0);
1589#endif 2051#endif
1590 } 2052 }
1591} 2053}
1592 2054
1593void 2055void noinline
1594ev_signal_stop (EV_P_ struct ev_signal *w) 2056ev_signal_stop (EV_P_ ev_signal *w)
1595{ 2057{
1596 ev_clear_pending (EV_A_ (W)w); 2058 clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w))) 2059 if (expect_false (!ev_is_active (w)))
1598 return; 2060 return;
1599 2061
1600 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2062 wlist_del (&signals [w->signum - 1].head, (WL)w);
1601 ev_stop (EV_A_ (W)w); 2063 ev_stop (EV_A_ (W)w);
1602 2064
1603 if (!signals [w->signum - 1].head) 2065 if (!signals [w->signum - 1].head)
1604 signal (w->signum, SIG_DFL); 2066 signal (w->signum, SIG_DFL);
1605} 2067}
1606 2068
1607void 2069void
1608ev_child_start (EV_P_ struct ev_child *w) 2070ev_child_start (EV_P_ ev_child *w)
1609{ 2071{
1610#if EV_MULTIPLICITY 2072#if EV_MULTIPLICITY
1611 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2073 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1612#endif 2074#endif
1613 if (expect_false (ev_is_active (w))) 2075 if (expect_false (ev_is_active (w)))
1614 return; 2076 return;
1615 2077
1616 ev_start (EV_A_ (W)w, 1); 2078 ev_start (EV_A_ (W)w, 1);
1617 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2079 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618} 2080}
1619 2081
1620void 2082void
1621ev_child_stop (EV_P_ struct ev_child *w) 2083ev_child_stop (EV_P_ ev_child *w)
1622{ 2084{
1623 ev_clear_pending (EV_A_ (W)w); 2085 clear_pending (EV_A_ (W)w);
1624 if (expect_false (!ev_is_active (w))) 2086 if (expect_false (!ev_is_active (w)))
1625 return; 2087 return;
1626 2088
1627 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2089 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1628 ev_stop (EV_A_ (W)w); 2090 ev_stop (EV_A_ (W)w);
1629} 2091}
1630 2092
2093#if EV_STAT_ENABLE
2094
2095# ifdef _WIN32
2096# undef lstat
2097# define lstat(a,b) _stati64 (a,b)
2098# endif
2099
2100#define DEF_STAT_INTERVAL 5.0074891
2101#define MIN_STAT_INTERVAL 0.1074891
2102
2103static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2104
2105#if EV_USE_INOTIFY
2106# define EV_INOTIFY_BUFSIZE 8192
2107
2108static void noinline
2109infy_add (EV_P_ ev_stat *w)
2110{
2111 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);
2112
2113 if (w->wd < 0)
2114 {
2115 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2116
2117 /* monitor some parent directory for speedup hints */
2118 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2119 {
2120 char path [4096];
2121 strcpy (path, w->path);
2122
2123 do
2124 {
2125 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2126 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2127
2128 char *pend = strrchr (path, '/');
2129
2130 if (!pend)
2131 break; /* whoops, no '/', complain to your admin */
2132
2133 *pend = 0;
2134 w->wd = inotify_add_watch (fs_fd, path, mask);
2135 }
2136 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2137 }
2138 }
2139 else
2140 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2141
2142 if (w->wd >= 0)
2143 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2144}
2145
2146static void noinline
2147infy_del (EV_P_ ev_stat *w)
2148{
2149 int slot;
2150 int wd = w->wd;
2151
2152 if (wd < 0)
2153 return;
2154
2155 w->wd = -2;
2156 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2157 wlist_del (&fs_hash [slot].head, (WL)w);
2158
2159 /* remove this watcher, if others are watching it, they will rearm */
2160 inotify_rm_watch (fs_fd, wd);
2161}
2162
2163static void noinline
2164infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2165{
2166 if (slot < 0)
2167 /* overflow, need to check for all hahs slots */
2168 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2169 infy_wd (EV_A_ slot, wd, ev);
2170 else
2171 {
2172 WL w_;
2173
2174 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2175 {
2176 ev_stat *w = (ev_stat *)w_;
2177 w_ = w_->next; /* lets us remove this watcher and all before it */
2178
2179 if (w->wd == wd || wd == -1)
2180 {
2181 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2182 {
2183 w->wd = -1;
2184 infy_add (EV_A_ w); /* re-add, no matter what */
2185 }
2186
2187 stat_timer_cb (EV_A_ &w->timer, 0);
2188 }
2189 }
2190 }
2191}
2192
2193static void
2194infy_cb (EV_P_ ev_io *w, int revents)
2195{
2196 char buf [EV_INOTIFY_BUFSIZE];
2197 struct inotify_event *ev = (struct inotify_event *)buf;
2198 int ofs;
2199 int len = read (fs_fd, buf, sizeof (buf));
2200
2201 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2202 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2203}
2204
2205void inline_size
2206infy_init (EV_P)
2207{
2208 if (fs_fd != -2)
2209 return;
2210
2211 fs_fd = inotify_init ();
2212
2213 if (fs_fd >= 0)
2214 {
2215 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2216 ev_set_priority (&fs_w, EV_MAXPRI);
2217 ev_io_start (EV_A_ &fs_w);
2218 }
2219}
2220
2221void inline_size
2222infy_fork (EV_P)
2223{
2224 int slot;
2225
2226 if (fs_fd < 0)
2227 return;
2228
2229 close (fs_fd);
2230 fs_fd = inotify_init ();
2231
2232 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2233 {
2234 WL w_ = fs_hash [slot].head;
2235 fs_hash [slot].head = 0;
2236
2237 while (w_)
2238 {
2239 ev_stat *w = (ev_stat *)w_;
2240 w_ = w_->next; /* lets us add this watcher */
2241
2242 w->wd = -1;
2243
2244 if (fs_fd >= 0)
2245 infy_add (EV_A_ w); /* re-add, no matter what */
2246 else
2247 ev_timer_start (EV_A_ &w->timer);
2248 }
2249
2250 }
2251}
2252
2253#endif
2254
2255void
2256ev_stat_stat (EV_P_ ev_stat *w)
2257{
2258 if (lstat (w->path, &w->attr) < 0)
2259 w->attr.st_nlink = 0;
2260 else if (!w->attr.st_nlink)
2261 w->attr.st_nlink = 1;
2262}
2263
2264static void noinline
2265stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2266{
2267 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2268
2269 /* we copy this here each the time so that */
2270 /* prev has the old value when the callback gets invoked */
2271 w->prev = w->attr;
2272 ev_stat_stat (EV_A_ w);
2273
2274 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2275 if (
2276 w->prev.st_dev != w->attr.st_dev
2277 || w->prev.st_ino != w->attr.st_ino
2278 || w->prev.st_mode != w->attr.st_mode
2279 || w->prev.st_nlink != w->attr.st_nlink
2280 || w->prev.st_uid != w->attr.st_uid
2281 || w->prev.st_gid != w->attr.st_gid
2282 || w->prev.st_rdev != w->attr.st_rdev
2283 || w->prev.st_size != w->attr.st_size
2284 || w->prev.st_atime != w->attr.st_atime
2285 || w->prev.st_mtime != w->attr.st_mtime
2286 || w->prev.st_ctime != w->attr.st_ctime
2287 ) {
2288 #if EV_USE_INOTIFY
2289 infy_del (EV_A_ w);
2290 infy_add (EV_A_ w);
2291 ev_stat_stat (EV_A_ w); /* avoid race... */
2292 #endif
2293
2294 ev_feed_event (EV_A_ w, EV_STAT);
2295 }
2296}
2297
2298void
2299ev_stat_start (EV_P_ ev_stat *w)
2300{
2301 if (expect_false (ev_is_active (w)))
2302 return;
2303
2304 /* since we use memcmp, we need to clear any padding data etc. */
2305 memset (&w->prev, 0, sizeof (ev_statdata));
2306 memset (&w->attr, 0, sizeof (ev_statdata));
2307
2308 ev_stat_stat (EV_A_ w);
2309
2310 if (w->interval < MIN_STAT_INTERVAL)
2311 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2312
2313 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2314 ev_set_priority (&w->timer, ev_priority (w));
2315
2316#if EV_USE_INOTIFY
2317 infy_init (EV_A);
2318
2319 if (fs_fd >= 0)
2320 infy_add (EV_A_ w);
2321 else
2322#endif
2323 ev_timer_start (EV_A_ &w->timer);
2324
2325 ev_start (EV_A_ (W)w, 1);
2326}
2327
2328void
2329ev_stat_stop (EV_P_ ev_stat *w)
2330{
2331 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w)))
2333 return;
2334
2335#if EV_USE_INOTIFY
2336 infy_del (EV_A_ w);
2337#endif
2338 ev_timer_stop (EV_A_ &w->timer);
2339
2340 ev_stop (EV_A_ (W)w);
2341}
2342#endif
2343
2344#if EV_IDLE_ENABLE
2345void
2346ev_idle_start (EV_P_ ev_idle *w)
2347{
2348 if (expect_false (ev_is_active (w)))
2349 return;
2350
2351 pri_adjust (EV_A_ (W)w);
2352
2353 {
2354 int active = ++idlecnt [ABSPRI (w)];
2355
2356 ++idleall;
2357 ev_start (EV_A_ (W)w, active);
2358
2359 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2360 idles [ABSPRI (w)][active - 1] = w;
2361 }
2362}
2363
2364void
2365ev_idle_stop (EV_P_ ev_idle *w)
2366{
2367 clear_pending (EV_A_ (W)w);
2368 if (expect_false (!ev_is_active (w)))
2369 return;
2370
2371 {
2372 int active = ((W)w)->active;
2373
2374 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2375 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2376
2377 ev_stop (EV_A_ (W)w);
2378 --idleall;
2379 }
2380}
2381#endif
2382
2383void
2384ev_prepare_start (EV_P_ ev_prepare *w)
2385{
2386 if (expect_false (ev_is_active (w)))
2387 return;
2388
2389 ev_start (EV_A_ (W)w, ++preparecnt);
2390 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2391 prepares [preparecnt - 1] = w;
2392}
2393
2394void
2395ev_prepare_stop (EV_P_ ev_prepare *w)
2396{
2397 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w)))
2399 return;
2400
2401 {
2402 int active = ((W)w)->active;
2403 prepares [active - 1] = prepares [--preparecnt];
2404 ((W)prepares [active - 1])->active = active;
2405 }
2406
2407 ev_stop (EV_A_ (W)w);
2408}
2409
2410void
2411ev_check_start (EV_P_ ev_check *w)
2412{
2413 if (expect_false (ev_is_active (w)))
2414 return;
2415
2416 ev_start (EV_A_ (W)w, ++checkcnt);
2417 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2418 checks [checkcnt - 1] = w;
2419}
2420
2421void
2422ev_check_stop (EV_P_ ev_check *w)
2423{
2424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w)))
2426 return;
2427
2428 {
2429 int active = ((W)w)->active;
2430 checks [active - 1] = checks [--checkcnt];
2431 ((W)checks [active - 1])->active = active;
2432 }
2433
2434 ev_stop (EV_A_ (W)w);
2435}
2436
2437#if EV_EMBED_ENABLE
2438void noinline
2439ev_embed_sweep (EV_P_ ev_embed *w)
2440{
2441 ev_loop (w->other, EVLOOP_NONBLOCK);
2442}
2443
2444static void
2445embed_io_cb (EV_P_ ev_io *io, int revents)
2446{
2447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2448
2449 if (ev_cb (w))
2450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2451 else
2452 ev_loop (w->other, EVLOOP_NONBLOCK);
2453}
2454
2455static void
2456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2457{
2458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2459
2460 {
2461 struct ev_loop *loop = w->other;
2462
2463 while (fdchangecnt)
2464 {
2465 fd_reify (EV_A);
2466 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2467 }
2468 }
2469}
2470
2471#if 0
2472static void
2473embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2474{
2475 ev_idle_stop (EV_A_ idle);
2476}
2477#endif
2478
2479void
2480ev_embed_start (EV_P_ ev_embed *w)
2481{
2482 if (expect_false (ev_is_active (w)))
2483 return;
2484
2485 {
2486 struct ev_loop *loop = w->other;
2487 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2488 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2489 }
2490
2491 ev_set_priority (&w->io, ev_priority (w));
2492 ev_io_start (EV_A_ &w->io);
2493
2494 ev_prepare_init (&w->prepare, embed_prepare_cb);
2495 ev_set_priority (&w->prepare, EV_MINPRI);
2496 ev_prepare_start (EV_A_ &w->prepare);
2497
2498 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2499
2500 ev_start (EV_A_ (W)w, 1);
2501}
2502
2503void
2504ev_embed_stop (EV_P_ ev_embed *w)
2505{
2506 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w)))
2508 return;
2509
2510 ev_io_stop (EV_A_ &w->io);
2511 ev_prepare_stop (EV_A_ &w->prepare);
2512
2513 ev_stop (EV_A_ (W)w);
2514}
2515#endif
2516
2517#if EV_FORK_ENABLE
2518void
2519ev_fork_start (EV_P_ ev_fork *w)
2520{
2521 if (expect_false (ev_is_active (w)))
2522 return;
2523
2524 ev_start (EV_A_ (W)w, ++forkcnt);
2525 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2526 forks [forkcnt - 1] = w;
2527}
2528
2529void
2530ev_fork_stop (EV_P_ ev_fork *w)
2531{
2532 clear_pending (EV_A_ (W)w);
2533 if (expect_false (!ev_is_active (w)))
2534 return;
2535
2536 {
2537 int active = ((W)w)->active;
2538 forks [active - 1] = forks [--forkcnt];
2539 ((W)forks [active - 1])->active = active;
2540 }
2541
2542 ev_stop (EV_A_ (W)w);
2543}
2544#endif
2545
2546#if EV_ASYNC_ENABLE
2547void
2548ev_async_start (EV_P_ ev_async *w)
2549{
2550 if (expect_false (ev_is_active (w)))
2551 return;
2552
2553 evpipe_init (EV_A);
2554
2555 ev_start (EV_A_ (W)w, ++asynccnt);
2556 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557 asyncs [asynccnt - 1] = w;
2558}
2559
2560void
2561ev_async_stop (EV_P_ ev_async *w)
2562{
2563 clear_pending (EV_A_ (W)w);
2564 if (expect_false (!ev_is_active (w)))
2565 return;
2566
2567 {
2568 int active = ((W)w)->active;
2569 asyncs [active - 1] = asyncs [--asynccnt];
2570 ((W)asyncs [active - 1])->active = active;
2571 }
2572
2573 ev_stop (EV_A_ (W)w);
2574}
2575
2576void
2577ev_async_send (EV_P_ ev_async *w)
2578{
2579 w->sent = 1;
2580 evpipe_write (EV_A_ &gotasync);
2581}
2582#endif
2583
1631/*****************************************************************************/ 2584/*****************************************************************************/
1632 2585
1633struct ev_once 2586struct ev_once
1634{ 2587{
1635 struct ev_io io; 2588 ev_io io;
1636 struct ev_timer to; 2589 ev_timer to;
1637 void (*cb)(int revents, void *arg); 2590 void (*cb)(int revents, void *arg);
1638 void *arg; 2591 void *arg;
1639}; 2592};
1640 2593
1641static void 2594static void
… …
1650 2603
1651 cb (revents, arg); 2604 cb (revents, arg);
1652} 2605}
1653 2606
1654static void 2607static void
1655once_cb_io (EV_P_ struct ev_io *w, int revents) 2608once_cb_io (EV_P_ ev_io *w, int revents)
1656{ 2609{
1657 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1658} 2611}
1659 2612
1660static void 2613static void
1661once_cb_to (EV_P_ struct ev_timer *w, int revents) 2614once_cb_to (EV_P_ ev_timer *w, int revents)
1662{ 2615{
1663 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2616 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1664} 2617}
1665 2618
1666void 2619void
… …
1690 ev_timer_set (&once->to, timeout, 0.); 2643 ev_timer_set (&once->to, timeout, 0.);
1691 ev_timer_start (EV_A_ &once->to); 2644 ev_timer_start (EV_A_ &once->to);
1692 } 2645 }
1693} 2646}
1694 2647
2648#if EV_MULTIPLICITY
2649 #include "ev_wrap.h"
2650#endif
2651
1695#ifdef __cplusplus 2652#ifdef __cplusplus
1696} 2653}
1697#endif 2654#endif
1698 2655

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