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Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs.
Revision 1.238 by root, Thu May 8 20:49:12 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
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
… …
51# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
53# endif 62# endif
54# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
55# 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
56# endif 73# endif
57# endif 74# endif
58 75
59# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 111# else
95# define EV_USE_PORT 0 112# define EV_USE_PORT 0
96# endif 113# endif
97# endif 114# endif
98 115
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
99#endif 132#endif
100 133
101#include <math.h> 134#include <math.h>
102#include <stdlib.h> 135#include <stdlib.h>
103#include <fcntl.h> 136#include <fcntl.h>
… …
109#include <errno.h> 142#include <errno.h>
110#include <sys/types.h> 143#include <sys/types.h>
111#include <time.h> 144#include <time.h>
112 145
113#include <signal.h> 146#include <signal.h>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
114 153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <sys/time.h> 155# include <sys/time.h>
117# include <sys/wait.h> 156# include <sys/wait.h>
118# include <unistd.h> 157# include <unistd.h>
… …
122# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
124# endif 163# endif
125#endif 164#endif
126 165
127/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
128 167
129#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
130# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
131#endif 170#endif
132 171
133#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
134# 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
135#endif 178#endif
136 179
137#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
139#endif 182#endif
… …
145# define EV_USE_POLL 1 188# define EV_USE_POLL 1
146# endif 189# endif
147#endif 190#endif
148 191
149#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
150# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
151#endif 198#endif
152 199
153#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
155#endif 202#endif
156 203
157#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
159#endif 214#endif
160 215
161#ifndef EV_PID_HASHSIZE 216#ifndef EV_PID_HASHSIZE
162# if EV_MINIMAL 217# if EV_MINIMAL
163# define EV_PID_HASHSIZE 1 218# define EV_PID_HASHSIZE 1
164# else 219# else
165# define EV_PID_HASHSIZE 16 220# define EV_PID_HASHSIZE 16
166# endif 221# endif
167#endif 222#endif
168 223
169/**/ 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 */
170 241
171#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
172# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
173# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
174#endif 245#endif
… …
176#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
177# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
179#endif 250#endif
180 251
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
181#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
182# include <winsock.h> 268# include <winsock.h>
183#endif 269#endif
184 270
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
185/**/ 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 */
186 294
187#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) */
188#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) */
189/*#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 */
190 298
191#ifdef EV_H
192# include EV_H
193#else
194# include "ev.h"
195#endif
196
197#if __GNUC__ >= 3 299#if __GNUC__ >= 4
198# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
199# define inline_size static inline /* inline for codesize */
200# if EV_MINIMAL
201# define noinline __attribute__ ((noinline)) 301# define noinline __attribute__ ((noinline))
202# define inline_speed static noinline
203# else
204# define noinline
205# define inline_speed static inline
206# endif
207#else 302#else
208# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
209# define inline_speed static
210# define inline_size static
211# define noinline 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
212#endif 308#endif
213 309
214#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
215#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
216 319
217#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219 322
220#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
221#define EMPTY2(a,b) /* used to suppress some warnings */ 324#define EMPTY2(a,b) /* used to suppress some warnings */
222 325
223typedef ev_watcher *W; 326typedef ev_watcher *W;
224typedef ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
225typedef ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
226 329
330#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at
332
333#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
227static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
228 338
229#ifdef _WIN32 339#ifdef _WIN32
230# include "ev_win32.c" 340# include "ev_win32.c"
231#endif 341#endif
232 342
… …
253 perror (msg); 363 perror (msg);
254 abort (); 364 abort ();
255 } 365 }
256} 366}
257 367
368static void *
369ev_realloc_emul (void *ptr, long size)
370{
371 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here.
374 */
375
376 if (size)
377 return realloc (ptr, size);
378
379 free (ptr);
380 return 0;
381}
382
258static void *(*alloc)(void *ptr, size_t size) = realloc; 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
259 384
260void 385void
261ev_set_allocator (void *(*cb)(void *ptr, size_t size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
262{ 387{
263 alloc = cb; 388 alloc = cb;
264} 389}
265 390
266inline_speed void * 391inline_speed void *
267ev_realloc (void *ptr, size_t size) 392ev_realloc (void *ptr, long size)
268{ 393{
269 ptr = alloc (ptr, size); 394 ptr = alloc (ptr, size);
270 395
271 if (!ptr && size) 396 if (!ptr && size)
272 { 397 {
273 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274 abort (); 399 abort ();
275 } 400 }
276 401
277 return ptr; 402 return ptr;
278} 403}
… …
295typedef struct 420typedef struct
296{ 421{
297 W w; 422 W w;
298 int events; 423 int events;
299} ANPENDING; 424} ANPENDING;
425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
300 432
301#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
302 434
303 struct ev_loop 435 struct ev_loop
304 { 436 {
… …
361{ 493{
362 return ev_rt_now; 494 return ev_rt_now;
363} 495}
364#endif 496#endif
365 497
366#define array_roundsize(type,n) (((n) | 4) & ~3) 498void
499ev_sleep (ev_tstamp delay)
500{
501 if (delay > 0.)
502 {
503#if EV_USE_NANOSLEEP
504 struct timespec ts;
505
506 ts.tv_sec = (time_t)delay;
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0);
510#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3));
512#else
513 struct timeval tv;
514
515 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517
518 select (0, 0, 0, 0, &tv);
519#endif
520 }
521}
522
523/*****************************************************************************/
524
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526
527int inline_size
528array_nextsize (int elem, int cur, int cnt)
529{
530 int ncur = cur + 1;
531
532 do
533 ncur <<= 1;
534 while (cnt > ncur);
535
536 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
537 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
538 {
539 ncur *= elem;
540 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
541 ncur = ncur - sizeof (void *) * 4;
542 ncur /= elem;
543 }
544
545 return ncur;
546}
547
548static noinline void *
549array_realloc (int elem, void *base, int *cur, int cnt)
550{
551 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur);
553}
367 554
368#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
369 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
370 { \ 557 { \
371 int newcnt = cur; \ 558 int ocur_ = (cur); \
372 do \ 559 (base) = (type *)array_realloc \
373 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
374 newcnt = array_roundsize (type, newcnt << 1); \ 561 init ((base) + (ocur_), (cur) - ocur_); \
375 } \
376 while ((cnt) > newcnt); \
377 \
378 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
379 init (base + cur, newcnt - cur); \
380 cur = newcnt; \
381 } 562 }
382 563
564#if 0
383#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
384 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385 { \ 567 { \
386 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
387 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
388 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
389 } 571 }
572#endif
390 573
391#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
392 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393 576
394/*****************************************************************************/ 577/*****************************************************************************/
395 578
396void noinline 579void noinline
397ev_feed_event (EV_P_ void *w, int revents) 580ev_feed_event (EV_P_ void *w, int revents)
398{ 581{
399 W w_ = (W)w; 582 W w_ = (W)w;
583 int pri = ABSPRI (w_);
400 584
401 if (expect_false (w_->pending)) 585 if (expect_false (w_->pending))
586 pendings [pri][w_->pending - 1].events |= revents;
587 else
402 { 588 {
589 w_->pending = ++pendingcnt [pri];
590 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
591 pendings [pri][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 592 pendings [pri][w_->pending - 1].events = revents;
404 return;
405 } 593 }
406
407 w_->pending = ++pendingcnt [ABSPRI (w_)];
408 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411} 594}
412 595
413void inline_size 596void inline_speed
414queue_events (EV_P_ W *events, int eventcnt, int type) 597queue_events (EV_P_ W *events, int eventcnt, int type)
415{ 598{
416 int i; 599 int i;
417 600
418 for (i = 0; i < eventcnt; ++i) 601 for (i = 0; i < eventcnt; ++i)
… …
450} 633}
451 634
452void 635void
453ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
454{ 637{
638 if (fd >= 0 && fd < anfdmax)
455 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
456} 640}
457 641
458void inline_size 642void inline_size
459fd_reify (EV_P) 643fd_reify (EV_P)
460{ 644{
… …
464 { 648 {
465 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
466 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
467 ev_io *w; 651 ev_io *w;
468 652
469 int events = 0; 653 unsigned char events = 0;
470 654
471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
472 events |= w->events; 656 events |= (unsigned char)w->events;
473 657
474#if EV_SELECT_IS_WINSOCKET 658#if EV_SELECT_IS_WINSOCKET
475 if (events) 659 if (events)
476 { 660 {
477 unsigned long argp; 661 unsigned long argp;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
478 anfd->handle = _get_osfhandle (fd); 665 anfd->handle = _get_osfhandle (fd);
666 #endif
479 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
480 } 668 }
481#endif 669#endif
482 670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
483 anfd->reify = 0; 675 anfd->reify = 0;
484
485 backend_modify (EV_A_ fd, anfd->events, events);
486 anfd->events = events; 676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events);
680 }
487 } 681 }
488 682
489 fdchangecnt = 0; 683 fdchangecnt = 0;
490} 684}
491 685
492void inline_size 686void inline_size
493fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
494{ 688{
495 if (expect_false (anfds [fd].reify)) 689 unsigned char reify = anfds [fd].reify;
496 return;
497
498 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
499 691
692 if (expect_true (!reify))
693 {
500 ++fdchangecnt; 694 ++fdchangecnt;
501 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
503} 698}
504 699
505void inline_speed 700void inline_speed
506fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
507{ 702{
… …
554static void noinline 749static void noinline
555fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
556{ 751{
557 int fd; 752 int fd;
558 753
559 /* this should be highly optimised to not do anything but set a flag */
560 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
561 if (anfds [fd].events) 755 if (anfds [fd].events)
562 { 756 {
563 anfds [fd].events = 0; 757 anfds [fd].events = 0;
564 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
565 } 759 }
566} 760}
567 761
568/*****************************************************************************/ 762/*****************************************************************************/
569 763
764/*
765 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers.
769 */
770#define USE_4HEAP !EV_MINIMAL
771#define USE_4HEAP 1/* they do not work corretcly */
772#if USE_4HEAP
773
774#define DHEAP 4
775#define HEAP0 (DHEAP - 1) /* index of first element in heap */
776
777/* towards the root */
570void inline_speed 778void inline_speed
571upheap (WT *heap, int k) 779upheap (WT *heap, int k)
572{ 780{
573 WT w = heap [k]; 781 WT w = heap [k];
574 782
575 while (k && heap [k >> 1]->at > w->at) 783 for (;;)
576 { 784 {
785 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787 if (p == k || heap [p]->at <= w->at)
788 break;
789
577 heap [k] = heap [k >> 1]; 790 heap [k] = heap [p];
578 ((W)heap [k])->active = k + 1; 791 ev_active (heap [k]) = k;
579 k >>= 1; 792 k = p;
580 } 793 }
581 794
582 heap [k] = w; 795 heap [k] = w;
583 ((W)heap [k])->active = k + 1; 796 ev_active (heap [k]) = k;
584
585} 797}
586 798
799/* away from the root */
587void inline_speed 800void inline_speed
588downheap (WT *heap, int N, int k) 801downheap (WT *heap, int N, int k)
589{ 802{
590 WT w = heap [k]; 803 WT w = heap [k];
804 WT *E = heap + N + HEAP0;
591 805
592 while (k < (N >> 1)) 806 for (;;)
593 { 807 {
594 int j = k << 1; 808 ev_tstamp minat;
809 WT *minpos;
810 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
595 811
596 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 812 // find minimum child
813 if (expect_true (pos + DHEAP - 1 < E))
597 ++j; 814 {
815 /* fast path */
816 (minpos = pos + 0), (minat = (*minpos)->at);
817 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
818 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
819 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
820 }
821 else
822 {
823 /* slow path */
824 if (pos >= E)
825 break;
826 (minpos = pos + 0), (minat = (*minpos)->at);
827 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830 }
598 831
599 if (w->at <= heap [j]->at) 832 if (w->at <= minat)
600 break; 833 break;
601 834
602 heap [k] = heap [j]; 835 ev_active (*minpos) = k;
603 ((W)heap [k])->active = k + 1; 836 heap [k] = *minpos;
604 k = j; 837
838 k = minpos - heap;
605 } 839 }
606 840
607 heap [k] = w; 841 heap [k] = w;
842 ev_active (heap [k]) = k;
843}
844
845#else // 4HEAP
846
847#define HEAP0 1
848
849/* towards the root */
850void inline_speed
851upheap (WT *heap, int k)
852{
853 WT w = heap [k];
854
855 for (;;)
856 {
857 int p = k >> 1;
858
859 /* maybe we could use a dummy element at heap [0]? */
860 if (!p || heap [p]->at <= w->at)
861 break;
862
863 heap [k] = heap [p];
864 ev_active (heap [k]) = k;
865 k = p;
866 }
867
868 heap [k] = w;
869 ev_active (heap [k]) = k;
870}
871
872/* away from the root */
873void inline_speed
874downheap (WT *heap, int N, int k)
875{
876 WT w = heap [k];
877
878 for (;;)
879 {
880 int c = k << 1;
881
882 if (c > N)
883 break;
884
885 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886 ? 1 : 0;
887
888 if (w->at <= heap [c]->at)
889 break;
890
891 heap [k] = heap [c];
608 ((W)heap [k])->active = k + 1; 892 ((W)heap [k])->active = k;
893
894 k = c;
895 }
896
897 heap [k] = w;
898 ev_active (heap [k]) = k;
609} 899}
900#endif
610 901
611void inline_size 902void inline_size
612adjustheap (WT *heap, int N, int k) 903adjustheap (WT *heap, int N, int k)
613{ 904{
614 upheap (heap, k); 905 upheap (heap, k);
… …
618/*****************************************************************************/ 909/*****************************************************************************/
619 910
620typedef struct 911typedef struct
621{ 912{
622 WL head; 913 WL head;
623 sig_atomic_t volatile gotsig; 914 EV_ATOMIC_T gotsig;
624} ANSIG; 915} ANSIG;
625 916
626static ANSIG *signals; 917static ANSIG *signals;
627static int signalmax; 918static int signalmax;
628 919
629static int sigpipe [2]; 920static EV_ATOMIC_T gotsig;
630static sig_atomic_t volatile gotsig;
631static ev_io sigev;
632 921
633void inline_size 922void inline_size
634signals_init (ANSIG *base, int count) 923signals_init (ANSIG *base, int count)
635{ 924{
636 while (count--) 925 while (count--)
… …
640 929
641 ++base; 930 ++base;
642 } 931 }
643} 932}
644 933
645static void 934/*****************************************************************************/
646sighandler (int signum)
647{
648#if _WIN32
649 signal (signum, sighandler);
650#endif
651 935
652 signals [signum - 1].gotsig = 1;
653
654 if (!gotsig)
655 {
656 int old_errno = errno;
657 gotsig = 1;
658 write (sigpipe [1], &signum, 1);
659 errno = old_errno;
660 }
661}
662
663void noinline
664ev_feed_signal_event (EV_P_ int signum)
665{
666 WL w;
667
668#if EV_MULTIPLICITY
669 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
670#endif
671
672 --signum;
673
674 if (signum < 0 || signum >= signalmax)
675 return;
676
677 signals [signum].gotsig = 0;
678
679 for (w = signals [signum].head; w; w = w->next)
680 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
681}
682
683static void
684sigcb (EV_P_ ev_io *iow, int revents)
685{
686 int signum;
687
688 read (sigpipe [0], &revents, 1);
689 gotsig = 0;
690
691 for (signum = signalmax; signum--; )
692 if (signals [signum].gotsig)
693 ev_feed_signal_event (EV_A_ signum + 1);
694}
695
696void inline_size 936void inline_speed
697fd_intern (int fd) 937fd_intern (int fd)
698{ 938{
699#ifdef _WIN32 939#ifdef _WIN32
700 int arg = 1; 940 int arg = 1;
701 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 941 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
704 fcntl (fd, F_SETFL, O_NONBLOCK); 944 fcntl (fd, F_SETFL, O_NONBLOCK);
705#endif 945#endif
706} 946}
707 947
708static void noinline 948static void noinline
709siginit (EV_P) 949evpipe_init (EV_P)
710{ 950{
951 if (!ev_is_active (&pipeev))
952 {
953#if EV_USE_EVENTFD
954 if ((evfd = eventfd (0, 0)) >= 0)
955 {
956 evpipe [0] = -1;
957 fd_intern (evfd);
958 ev_io_set (&pipeev, evfd, EV_READ);
959 }
960 else
961#endif
962 {
963 while (pipe (evpipe))
964 syserr ("(libev) error creating signal/async pipe");
965
711 fd_intern (sigpipe [0]); 966 fd_intern (evpipe [0]);
712 fd_intern (sigpipe [1]); 967 fd_intern (evpipe [1]);
968 ev_io_set (&pipeev, evpipe [0], EV_READ);
969 }
713 970
714 ev_io_set (&sigev, sigpipe [0], EV_READ);
715 ev_io_start (EV_A_ &sigev); 971 ev_io_start (EV_A_ &pipeev);
716 ev_unref (EV_A); /* child watcher should not keep loop alive */ 972 ev_unref (EV_A); /* watcher should not keep loop alive */
973 }
974}
975
976void inline_size
977evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978{
979 if (!*flag)
980 {
981 int old_errno = errno; /* save errno because write might clobber it */
982
983 *flag = 1;
984
985#if EV_USE_EVENTFD
986 if (evfd >= 0)
987 {
988 uint64_t counter = 1;
989 write (evfd, &counter, sizeof (uint64_t));
990 }
991 else
992#endif
993 write (evpipe [1], &old_errno, 1);
994
995 errno = old_errno;
996 }
997}
998
999static void
1000pipecb (EV_P_ ev_io *iow, int revents)
1001{
1002#if EV_USE_EVENTFD
1003 if (evfd >= 0)
1004 {
1005 uint64_t counter;
1006 read (evfd, &counter, sizeof (uint64_t));
1007 }
1008 else
1009#endif
1010 {
1011 char dummy;
1012 read (evpipe [0], &dummy, 1);
1013 }
1014
1015 if (gotsig && ev_is_default_loop (EV_A))
1016 {
1017 int signum;
1018 gotsig = 0;
1019
1020 for (signum = signalmax; signum--; )
1021 if (signals [signum].gotsig)
1022 ev_feed_signal_event (EV_A_ signum + 1);
1023 }
1024
1025#if EV_ASYNC_ENABLE
1026 if (gotasync)
1027 {
1028 int i;
1029 gotasync = 0;
1030
1031 for (i = asynccnt; i--; )
1032 if (asyncs [i]->sent)
1033 {
1034 asyncs [i]->sent = 0;
1035 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1036 }
1037 }
1038#endif
717} 1039}
718 1040
719/*****************************************************************************/ 1041/*****************************************************************************/
720 1042
1043static void
1044ev_sighandler (int signum)
1045{
1046#if EV_MULTIPLICITY
1047 struct ev_loop *loop = &default_loop_struct;
1048#endif
1049
1050#if _WIN32
1051 signal (signum, ev_sighandler);
1052#endif
1053
1054 signals [signum - 1].gotsig = 1;
1055 evpipe_write (EV_A_ &gotsig);
1056}
1057
1058void noinline
1059ev_feed_signal_event (EV_P_ int signum)
1060{
1061 WL w;
1062
1063#if EV_MULTIPLICITY
1064 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1065#endif
1066
1067 --signum;
1068
1069 if (signum < 0 || signum >= signalmax)
1070 return;
1071
1072 signals [signum].gotsig = 0;
1073
1074 for (w = signals [signum].head; w; w = w->next)
1075 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1076}
1077
1078/*****************************************************************************/
1079
721static ev_child *childs [EV_PID_HASHSIZE]; 1080static WL childs [EV_PID_HASHSIZE];
722 1081
723#ifndef _WIN32 1082#ifndef _WIN32
724 1083
725static ev_signal childev; 1084static ev_signal childev;
726 1085
1086#ifndef WIFCONTINUED
1087# define WIFCONTINUED(status) 0
1088#endif
1089
727void inline_speed 1090void inline_speed
728child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1091child_reap (EV_P_ int chain, int pid, int status)
729{ 1092{
730 ev_child *w; 1093 ev_child *w;
1094 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
731 1095
732 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1096 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1097 {
733 if (w->pid == pid || !w->pid) 1098 if ((w->pid == pid || !w->pid)
1099 && (!traced || (w->flags & 1)))
734 { 1100 {
735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1101 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
736 w->rpid = pid; 1102 w->rpid = pid;
737 w->rstatus = status; 1103 w->rstatus = status;
738 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1104 ev_feed_event (EV_A_ (W)w, EV_CHILD);
739 } 1105 }
1106 }
740} 1107}
741 1108
742#ifndef WCONTINUED 1109#ifndef WCONTINUED
743# define WCONTINUED 0 1110# define WCONTINUED 0
744#endif 1111#endif
… …
753 if (!WCONTINUED 1120 if (!WCONTINUED
754 || errno != EINVAL 1121 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1122 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return; 1123 return;
757 1124
758 /* make sure we are called again until all childs have been reaped */ 1125 /* make sure we are called again until all children have been reaped */
759 /* we need to do it this way so that the callback gets called before we continue */ 1126 /* we need to do it this way so that the callback gets called before we continue */
760 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1127 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
761 1128
762 child_reap (EV_A_ sw, pid, pid, status); 1129 child_reap (EV_A_ pid, pid, status);
763 if (EV_PID_HASHSIZE > 1) 1130 if (EV_PID_HASHSIZE > 1)
764 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1131 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
765} 1132}
766 1133
767#endif 1134#endif
768 1135
769/*****************************************************************************/ 1136/*****************************************************************************/
… …
841} 1208}
842 1209
843unsigned int 1210unsigned int
844ev_embeddable_backends (void) 1211ev_embeddable_backends (void)
845{ 1212{
846 return EVBACKEND_EPOLL 1213 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
847 | EVBACKEND_KQUEUE 1214
848 | EVBACKEND_PORT; 1215 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1216 /* please fix it and tell me how to detect the fix */
1217 flags &= ~EVBACKEND_EPOLL;
1218
1219 return flags;
849} 1220}
850 1221
851unsigned int 1222unsigned int
852ev_backend (EV_P) 1223ev_backend (EV_P)
853{ 1224{
854 return backend; 1225 return backend;
855} 1226}
856 1227
857static void 1228unsigned int
1229ev_loop_count (EV_P)
1230{
1231 return loop_count;
1232}
1233
1234void
1235ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1236{
1237 io_blocktime = interval;
1238}
1239
1240void
1241ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242{
1243 timeout_blocktime = interval;
1244}
1245
1246static void noinline
858loop_init (EV_P_ unsigned int flags) 1247loop_init (EV_P_ unsigned int flags)
859{ 1248{
860 if (!backend) 1249 if (!backend)
861 { 1250 {
862#if EV_USE_MONOTONIC 1251#if EV_USE_MONOTONIC
… …
865 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1254 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
866 have_monotonic = 1; 1255 have_monotonic = 1;
867 } 1256 }
868#endif 1257#endif
869 1258
870 ev_rt_now = ev_time (); 1259 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1260 mn_now = get_clock ();
872 now_floor = mn_now; 1261 now_floor = mn_now;
873 rtmn_diff = ev_rt_now - mn_now; 1262 rtmn_diff = ev_rt_now - mn_now;
1263
1264 io_blocktime = 0.;
1265 timeout_blocktime = 0.;
1266 backend = 0;
1267 backend_fd = -1;
1268 gotasync = 0;
1269#if EV_USE_INOTIFY
1270 fs_fd = -2;
1271#endif
1272
1273 /* pid check not overridable via env */
1274#ifndef _WIN32
1275 if (flags & EVFLAG_FORKCHECK)
1276 curpid = getpid ();
1277#endif
874 1278
875 if (!(flags & EVFLAG_NOENV) 1279 if (!(flags & EVFLAG_NOENV)
876 && !enable_secure () 1280 && !enable_secure ()
877 && getenv ("LIBEV_FLAGS")) 1281 && getenv ("LIBEV_FLAGS"))
878 flags = atoi (getenv ("LIBEV_FLAGS")); 1282 flags = atoi (getenv ("LIBEV_FLAGS"));
879 1283
880 if (!(flags & 0x0000ffffUL)) 1284 if (!(flags & 0x0000ffffU))
881 flags |= ev_recommended_backends (); 1285 flags |= ev_recommended_backends ();
882 1286
883 backend = 0;
884#if EV_USE_PORT 1287#if EV_USE_PORT
885 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1288 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886#endif 1289#endif
887#if EV_USE_KQUEUE 1290#if EV_USE_KQUEUE
888 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1291 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
895#endif 1298#endif
896#if EV_USE_SELECT 1299#if EV_USE_SELECT
897 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1300 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
898#endif 1301#endif
899 1302
900 ev_init (&sigev, sigcb); 1303 ev_init (&pipeev, pipecb);
901 ev_set_priority (&sigev, EV_MAXPRI); 1304 ev_set_priority (&pipeev, EV_MAXPRI);
902 } 1305 }
903} 1306}
904 1307
905static void 1308static void noinline
906loop_destroy (EV_P) 1309loop_destroy (EV_P)
907{ 1310{
908 int i; 1311 int i;
1312
1313 if (ev_is_active (&pipeev))
1314 {
1315 ev_ref (EV_A); /* signal watcher */
1316 ev_io_stop (EV_A_ &pipeev);
1317
1318#if EV_USE_EVENTFD
1319 if (evfd >= 0)
1320 close (evfd);
1321#endif
1322
1323 if (evpipe [0] >= 0)
1324 {
1325 close (evpipe [0]);
1326 close (evpipe [1]);
1327 }
1328 }
1329
1330#if EV_USE_INOTIFY
1331 if (fs_fd >= 0)
1332 close (fs_fd);
1333#endif
1334
1335 if (backend_fd >= 0)
1336 close (backend_fd);
909 1337
910#if EV_USE_PORT 1338#if EV_USE_PORT
911 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1339 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912#endif 1340#endif
913#if EV_USE_KQUEUE 1341#if EV_USE_KQUEUE
… …
922#if EV_USE_SELECT 1350#if EV_USE_SELECT
923 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1351 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924#endif 1352#endif
925 1353
926 for (i = NUMPRI; i--; ) 1354 for (i = NUMPRI; i--; )
1355 {
927 array_free (pending, [i]); 1356 array_free (pending, [i]);
1357#if EV_IDLE_ENABLE
1358 array_free (idle, [i]);
1359#endif
1360 }
1361
1362 ev_free (anfds); anfdmax = 0;
928 1363
929 /* have to use the microsoft-never-gets-it-right macro */ 1364 /* have to use the microsoft-never-gets-it-right macro */
930 array_free (fdchange, EMPTY0); 1365 array_free (fdchange, EMPTY);
931 array_free (timer, EMPTY0); 1366 array_free (timer, EMPTY);
932#if EV_PERIODIC_ENABLE 1367#if EV_PERIODIC_ENABLE
933 array_free (periodic, EMPTY0); 1368 array_free (periodic, EMPTY);
934#endif 1369#endif
1370#if EV_FORK_ENABLE
935 array_free (idle, EMPTY0); 1371 array_free (fork, EMPTY);
1372#endif
936 array_free (prepare, EMPTY0); 1373 array_free (prepare, EMPTY);
937 array_free (check, EMPTY0); 1374 array_free (check, EMPTY);
1375#if EV_ASYNC_ENABLE
1376 array_free (async, EMPTY);
1377#endif
938 1378
939 backend = 0; 1379 backend = 0;
940} 1380}
941 1381
942static void 1382#if EV_USE_INOTIFY
1383void inline_size infy_fork (EV_P);
1384#endif
1385
1386void inline_size
943loop_fork (EV_P) 1387loop_fork (EV_P)
944{ 1388{
945#if EV_USE_PORT 1389#if EV_USE_PORT
946 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1390 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947#endif 1391#endif
… …
949 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1393 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950#endif 1394#endif
951#if EV_USE_EPOLL 1395#if EV_USE_EPOLL
952 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1396 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
953#endif 1397#endif
1398#if EV_USE_INOTIFY
1399 infy_fork (EV_A);
1400#endif
954 1401
955 if (ev_is_active (&sigev)) 1402 if (ev_is_active (&pipeev))
956 { 1403 {
957 /* default loop */ 1404 /* this "locks" the handlers against writing to the pipe */
1405 /* while we modify the fd vars */
1406 gotsig = 1;
1407#if EV_ASYNC_ENABLE
1408 gotasync = 1;
1409#endif
958 1410
959 ev_ref (EV_A); 1411 ev_ref (EV_A);
960 ev_io_stop (EV_A_ &sigev); 1412 ev_io_stop (EV_A_ &pipeev);
1413
1414#if EV_USE_EVENTFD
1415 if (evfd >= 0)
1416 close (evfd);
1417#endif
1418
1419 if (evpipe [0] >= 0)
1420 {
961 close (sigpipe [0]); 1421 close (evpipe [0]);
962 close (sigpipe [1]); 1422 close (evpipe [1]);
1423 }
963 1424
964 while (pipe (sigpipe))
965 syserr ("(libev) error creating pipe");
966
967 siginit (EV_A); 1425 evpipe_init (EV_A);
1426 /* now iterate over everything, in case we missed something */
1427 pipecb (EV_A_ &pipeev, EV_READ);
968 } 1428 }
969 1429
970 postfork = 0; 1430 postfork = 0;
971} 1431}
972 1432
… …
994} 1454}
995 1455
996void 1456void
997ev_loop_fork (EV_P) 1457ev_loop_fork (EV_P)
998{ 1458{
999 postfork = 1; 1459 postfork = 1; /* must be in line with ev_default_fork */
1000} 1460}
1001
1002#endif 1461#endif
1003 1462
1004#if EV_MULTIPLICITY 1463#if EV_MULTIPLICITY
1005struct ev_loop * 1464struct ev_loop *
1006ev_default_loop_init (unsigned int flags) 1465ev_default_loop_init (unsigned int flags)
1007#else 1466#else
1008int 1467int
1009ev_default_loop (unsigned int flags) 1468ev_default_loop (unsigned int flags)
1010#endif 1469#endif
1011{ 1470{
1012 if (sigpipe [0] == sigpipe [1])
1013 if (pipe (sigpipe))
1014 return 0;
1015
1016 if (!ev_default_loop_ptr) 1471 if (!ev_default_loop_ptr)
1017 { 1472 {
1018#if EV_MULTIPLICITY 1473#if EV_MULTIPLICITY
1019 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1474 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1020#else 1475#else
… …
1023 1478
1024 loop_init (EV_A_ flags); 1479 loop_init (EV_A_ flags);
1025 1480
1026 if (ev_backend (EV_A)) 1481 if (ev_backend (EV_A))
1027 { 1482 {
1028 siginit (EV_A);
1029
1030#ifndef _WIN32 1483#ifndef _WIN32
1031 ev_signal_init (&childev, childcb, SIGCHLD); 1484 ev_signal_init (&childev, childcb, SIGCHLD);
1032 ev_set_priority (&childev, EV_MAXPRI); 1485 ev_set_priority (&childev, EV_MAXPRI);
1033 ev_signal_start (EV_A_ &childev); 1486 ev_signal_start (EV_A_ &childev);
1034 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1487 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1051#ifndef _WIN32 1504#ifndef _WIN32
1052 ev_ref (EV_A); /* child watcher */ 1505 ev_ref (EV_A); /* child watcher */
1053 ev_signal_stop (EV_A_ &childev); 1506 ev_signal_stop (EV_A_ &childev);
1054#endif 1507#endif
1055 1508
1056 ev_ref (EV_A); /* signal watcher */
1057 ev_io_stop (EV_A_ &sigev);
1058
1059 close (sigpipe [0]); sigpipe [0] = 0;
1060 close (sigpipe [1]); sigpipe [1] = 0;
1061
1062 loop_destroy (EV_A); 1509 loop_destroy (EV_A);
1063} 1510}
1064 1511
1065void 1512void
1066ev_default_fork (void) 1513ev_default_fork (void)
… …
1068#if EV_MULTIPLICITY 1515#if EV_MULTIPLICITY
1069 struct ev_loop *loop = ev_default_loop_ptr; 1516 struct ev_loop *loop = ev_default_loop_ptr;
1070#endif 1517#endif
1071 1518
1072 if (backend) 1519 if (backend)
1073 postfork = 1; 1520 postfork = 1; /* must be in line with ev_loop_fork */
1074} 1521}
1075 1522
1076/*****************************************************************************/ 1523/*****************************************************************************/
1077 1524
1078int inline_size 1525void
1079any_pending (EV_P) 1526ev_invoke (EV_P_ void *w, int revents)
1080{ 1527{
1081 int pri; 1528 EV_CB_INVOKE ((W)w, revents);
1082
1083 for (pri = NUMPRI; pri--; )
1084 if (pendingcnt [pri])
1085 return 1;
1086
1087 return 0;
1088} 1529}
1089 1530
1090void inline_speed 1531void inline_speed
1091call_pending (EV_P) 1532call_pending (EV_P)
1092{ 1533{
… …
1097 { 1538 {
1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1539 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099 1540
1100 if (expect_true (p->w)) 1541 if (expect_true (p->w))
1101 { 1542 {
1102 assert (("non-pending watcher on pending list", p->w->pending)); 1543 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1103 1544
1104 p->w->pending = 0; 1545 p->w->pending = 0;
1105 EV_CB_INVOKE (p->w, p->events); 1546 EV_CB_INVOKE (p->w, p->events);
1106 } 1547 }
1107 } 1548 }
1108} 1549}
1109 1550
1551#if EV_IDLE_ENABLE
1552void inline_size
1553idle_reify (EV_P)
1554{
1555 if (expect_false (idleall))
1556 {
1557 int pri;
1558
1559 for (pri = NUMPRI; pri--; )
1560 {
1561 if (pendingcnt [pri])
1562 break;
1563
1564 if (idlecnt [pri])
1565 {
1566 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1567 break;
1568 }
1569 }
1570 }
1571}
1572#endif
1573
1110void inline_size 1574void inline_size
1111timers_reify (EV_P) 1575timers_reify (EV_P)
1112{ 1576{
1113 while (timercnt && ((WT)timers [0])->at <= mn_now) 1577 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
1114 { 1578 {
1115 ev_timer *w = timers [0]; 1579 ev_timer *w = (ev_timer *)timers [HEAP0];
1116 1580
1117 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1581 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1118 1582
1119 /* first reschedule or stop timer */ 1583 /* first reschedule or stop timer */
1120 if (w->repeat) 1584 if (w->repeat)
1121 { 1585 {
1122 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1586 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123 1587
1124 ((WT)w)->at += w->repeat; 1588 ev_at (w) += w->repeat;
1125 if (((WT)w)->at < mn_now) 1589 if (ev_at (w) < mn_now)
1126 ((WT)w)->at = mn_now; 1590 ev_at (w) = mn_now;
1127 1591
1128 downheap ((WT *)timers, timercnt, 0); 1592 downheap (timers, timercnt, HEAP0);
1129 } 1593 }
1130 else 1594 else
1131 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1595 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132 1596
1133 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1597 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1136 1600
1137#if EV_PERIODIC_ENABLE 1601#if EV_PERIODIC_ENABLE
1138void inline_size 1602void inline_size
1139periodics_reify (EV_P) 1603periodics_reify (EV_P)
1140{ 1604{
1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1605 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1142 { 1606 {
1143 ev_periodic *w = periodics [0]; 1607 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1144 1608
1145 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1609 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1146 1610
1147 /* first reschedule or stop timer */ 1611 /* first reschedule or stop timer */
1148 if (w->reschedule_cb) 1612 if (w->reschedule_cb)
1149 { 1613 {
1150 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1614 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1151 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1615 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1152 downheap ((WT *)periodics, periodiccnt, 0); 1616 downheap (periodics, periodiccnt, 1);
1153 } 1617 }
1154 else if (w->interval) 1618 else if (w->interval)
1155 { 1619 {
1156 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1620 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1157 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1622 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1158 downheap ((WT *)periodics, periodiccnt, 0); 1623 downheap (periodics, periodiccnt, HEAP0);
1159 } 1624 }
1160 else 1625 else
1161 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1626 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162 1627
1163 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1628 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1168periodics_reschedule (EV_P) 1633periodics_reschedule (EV_P)
1169{ 1634{
1170 int i; 1635 int i;
1171 1636
1172 /* adjust periodics after time jump */ 1637 /* adjust periodics after time jump */
1173 for (i = 0; i < periodiccnt; ++i) 1638 for (i = 1; i <= periodiccnt; ++i)
1174 { 1639 {
1175 ev_periodic *w = periodics [i]; 1640 ev_periodic *w = (ev_periodic *)periodics [i];
1176 1641
1177 if (w->reschedule_cb) 1642 if (w->reschedule_cb)
1178 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1643 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1179 else if (w->interval) 1644 else if (w->interval)
1180 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1181 } 1646 }
1182 1647
1183 /* now rebuild the heap */ 1648 /* now rebuild the heap */
1184 for (i = periodiccnt >> 1; i--; ) 1649 for (i = periodiccnt >> 1; --i; )
1185 downheap ((WT *)periodics, periodiccnt, i); 1650 downheap (periodics, periodiccnt, i + HEAP0);
1186} 1651}
1187#endif 1652#endif
1188 1653
1189int inline_size 1654void inline_speed
1190time_update_monotonic (EV_P) 1655time_update (EV_P_ ev_tstamp max_block)
1191{ 1656{
1657 int i;
1658
1659#if EV_USE_MONOTONIC
1660 if (expect_true (have_monotonic))
1661 {
1662 ev_tstamp odiff = rtmn_diff;
1663
1192 mn_now = get_clock (); 1664 mn_now = get_clock ();
1193 1665
1666 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1667 /* interpolate in the meantime */
1194 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1668 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195 { 1669 {
1196 ev_rt_now = rtmn_diff + mn_now; 1670 ev_rt_now = rtmn_diff + mn_now;
1197 return 0; 1671 return;
1198 } 1672 }
1199 else 1673
1200 {
1201 now_floor = mn_now; 1674 now_floor = mn_now;
1202 ev_rt_now = ev_time (); 1675 ev_rt_now = ev_time ();
1203 return 1;
1204 }
1205}
1206 1676
1207void inline_size 1677 /* loop a few times, before making important decisions.
1208time_update (EV_P) 1678 * on the choice of "4": one iteration isn't enough,
1209{ 1679 * in case we get preempted during the calls to
1210 int i; 1680 * ev_time and get_clock. a second call is almost guaranteed
1211 1681 * to succeed in that case, though. and looping a few more times
1212#if EV_USE_MONOTONIC 1682 * doesn't hurt either as we only do this on time-jumps or
1213 if (expect_true (have_monotonic)) 1683 * in the unlikely event of having been preempted here.
1214 { 1684 */
1215 if (time_update_monotonic (EV_A)) 1685 for (i = 4; --i; )
1216 { 1686 {
1217 ev_tstamp odiff = rtmn_diff;
1218
1219 /* loop a few times, before making important decisions.
1220 * on the choice of "4": one iteration isn't enough,
1221 * in case we get preempted during the calls to
1222 * ev_time and get_clock. a second call is almost guarenteed
1223 * to succeed in that case, though. and looping a few more times
1224 * doesn't hurt either as we only do this on time-jumps or
1225 * in the unlikely event of getting preempted here.
1226 */
1227 for (i = 4; --i; )
1228 {
1229 rtmn_diff = ev_rt_now - mn_now; 1687 rtmn_diff = ev_rt_now - mn_now;
1230 1688
1231 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1689 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1232 return; /* all is well */ 1690 return; /* all is well */
1233 1691
1234 ev_rt_now = ev_time (); 1692 ev_rt_now = ev_time ();
1235 mn_now = get_clock (); 1693 mn_now = get_clock ();
1236 now_floor = mn_now; 1694 now_floor = mn_now;
1237 } 1695 }
1238 1696
1239# if EV_PERIODIC_ENABLE 1697# if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1698 periodics_reschedule (EV_A);
1241# endif 1699# endif
1242 /* no timer adjustment, as the monotonic clock doesn't jump */ 1700 /* no timer adjustment, as the monotonic clock doesn't jump */
1243 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1701 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244 }
1245 } 1702 }
1246 else 1703 else
1247#endif 1704#endif
1248 { 1705 {
1249 ev_rt_now = ev_time (); 1706 ev_rt_now = ev_time ();
1250 1707
1251 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1708 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252 { 1709 {
1253#if EV_PERIODIC_ENABLE 1710#if EV_PERIODIC_ENABLE
1254 periodics_reschedule (EV_A); 1711 periodics_reschedule (EV_A);
1255#endif 1712#endif
1256
1257 /* adjust timers. this is easy, as the offset is the same for all */ 1713 /* adjust timers. this is easy, as the offset is the same for all of them */
1258 for (i = 0; i < timercnt; ++i) 1714 for (i = 1; i <= timercnt; ++i)
1259 ((WT)timers [i])->at += ev_rt_now - mn_now; 1715 ev_at (timers [i]) += ev_rt_now - mn_now;
1260 } 1716 }
1261 1717
1262 mn_now = ev_rt_now; 1718 mn_now = ev_rt_now;
1263 } 1719 }
1264} 1720}
… …
1278static int loop_done; 1734static int loop_done;
1279 1735
1280void 1736void
1281ev_loop (EV_P_ int flags) 1737ev_loop (EV_P_ int flags)
1282{ 1738{
1283 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1739 loop_done = EVUNLOOP_CANCEL;
1284 ? EVUNLOOP_ONE
1285 : EVUNLOOP_CANCEL;
1286 1740
1287 while (activecnt) 1741 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1742
1743 do
1288 { 1744 {
1289 /* we might have forked, so reify kernel state if necessary */ 1745#ifndef _WIN32
1746 if (expect_false (curpid)) /* penalise the forking check even more */
1747 if (expect_false (getpid () != curpid))
1748 {
1749 curpid = getpid ();
1750 postfork = 1;
1751 }
1752#endif
1753
1290 #if EV_FORK_ENABLE 1754#if EV_FORK_ENABLE
1755 /* we might have forked, so queue fork handlers */
1291 if (expect_false (postfork)) 1756 if (expect_false (postfork))
1292 if (forkcnt) 1757 if (forkcnt)
1293 { 1758 {
1294 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1759 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295 call_pending (EV_A); 1760 call_pending (EV_A);
1296 } 1761 }
1297 #endif 1762#endif
1298 1763
1299 /* queue check watchers (and execute them) */ 1764 /* queue prepare watchers (and execute them) */
1300 if (expect_false (preparecnt)) 1765 if (expect_false (preparecnt))
1301 { 1766 {
1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1767 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303 call_pending (EV_A); 1768 call_pending (EV_A);
1304 } 1769 }
1305 1770
1771 if (expect_false (!activecnt))
1772 break;
1773
1306 /* we might have forked, so reify kernel state if necessary */ 1774 /* we might have forked, so reify kernel state if necessary */
1307 if (expect_false (postfork)) 1775 if (expect_false (postfork))
1308 loop_fork (EV_A); 1776 loop_fork (EV_A);
1309 1777
1310 /* update fd-related kernel structures */ 1778 /* update fd-related kernel structures */
1311 fd_reify (EV_A); 1779 fd_reify (EV_A);
1312 1780
1313 /* calculate blocking time */ 1781 /* calculate blocking time */
1314 { 1782 {
1315 double block; 1783 ev_tstamp waittime = 0.;
1784 ev_tstamp sleeptime = 0.;
1316 1785
1317 if (flags & EVLOOP_NONBLOCK || idlecnt) 1786 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1318 block = 0.; /* do not block at all */
1319 else
1320 { 1787 {
1321 /* update time to cancel out callback processing overhead */ 1788 /* update time to cancel out callback processing overhead */
1322#if EV_USE_MONOTONIC
1323 if (expect_true (have_monotonic))
1324 time_update_monotonic (EV_A); 1789 time_update (EV_A_ 1e100);
1325 else
1326#endif
1327 {
1328 ev_rt_now = ev_time ();
1329 mn_now = ev_rt_now;
1330 }
1331 1790
1332 block = MAX_BLOCKTIME; 1791 waittime = MAX_BLOCKTIME;
1333 1792
1334 if (timercnt) 1793 if (timercnt)
1335 { 1794 {
1336 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1795 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1337 if (block > to) block = to; 1796 if (waittime > to) waittime = to;
1338 } 1797 }
1339 1798
1340#if EV_PERIODIC_ENABLE 1799#if EV_PERIODIC_ENABLE
1341 if (periodiccnt) 1800 if (periodiccnt)
1342 { 1801 {
1343 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1802 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1344 if (block > to) block = to; 1803 if (waittime > to) waittime = to;
1345 } 1804 }
1346#endif 1805#endif
1347 1806
1348 if (expect_false (block < 0.)) block = 0.; 1807 if (expect_false (waittime < timeout_blocktime))
1808 waittime = timeout_blocktime;
1809
1810 sleeptime = waittime - backend_fudge;
1811
1812 if (expect_true (sleeptime > io_blocktime))
1813 sleeptime = io_blocktime;
1814
1815 if (sleeptime)
1816 {
1817 ev_sleep (sleeptime);
1818 waittime -= sleeptime;
1819 }
1349 } 1820 }
1350 1821
1822 ++loop_count;
1351 backend_poll (EV_A_ block); 1823 backend_poll (EV_A_ waittime);
1824
1825 /* update ev_rt_now, do magic */
1826 time_update (EV_A_ waittime + sleeptime);
1352 } 1827 }
1353
1354 /* update ev_rt_now, do magic */
1355 time_update (EV_A);
1356 1828
1357 /* queue pending timers and reschedule them */ 1829 /* queue pending timers and reschedule them */
1358 timers_reify (EV_A); /* relative timers called last */ 1830 timers_reify (EV_A); /* relative timers called last */
1359#if EV_PERIODIC_ENABLE 1831#if EV_PERIODIC_ENABLE
1360 periodics_reify (EV_A); /* absolute timers called first */ 1832 periodics_reify (EV_A); /* absolute timers called first */
1361#endif 1833#endif
1362 1834
1835#if EV_IDLE_ENABLE
1363 /* queue idle watchers unless other events are pending */ 1836 /* queue idle watchers unless other events are pending */
1364 if (idlecnt && !any_pending (EV_A)) 1837 idle_reify (EV_A);
1365 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1838#endif
1366 1839
1367 /* queue check watchers, to be executed first */ 1840 /* queue check watchers, to be executed first */
1368 if (expect_false (checkcnt)) 1841 if (expect_false (checkcnt))
1369 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1842 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370 1843
1371 call_pending (EV_A); 1844 call_pending (EV_A);
1372
1373 if (expect_false (loop_done))
1374 break;
1375 } 1845 }
1846 while (expect_true (
1847 activecnt
1848 && !loop_done
1849 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1850 ));
1376 1851
1377 if (loop_done == EVUNLOOP_ONE) 1852 if (loop_done == EVUNLOOP_ONE)
1378 loop_done = EVUNLOOP_CANCEL; 1853 loop_done = EVUNLOOP_CANCEL;
1379} 1854}
1380 1855
… …
1407 head = &(*head)->next; 1882 head = &(*head)->next;
1408 } 1883 }
1409} 1884}
1410 1885
1411void inline_speed 1886void inline_speed
1412ev_clear_pending (EV_P_ W w) 1887clear_pending (EV_P_ W w)
1413{ 1888{
1414 if (w->pending) 1889 if (w->pending)
1415 { 1890 {
1416 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1891 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417 w->pending = 0; 1892 w->pending = 0;
1418 } 1893 }
1419} 1894}
1420 1895
1896int
1897ev_clear_pending (EV_P_ void *w)
1898{
1899 W w_ = (W)w;
1900 int pending = w_->pending;
1901
1902 if (expect_true (pending))
1903 {
1904 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1905 w_->pending = 0;
1906 p->w = 0;
1907 return p->events;
1908 }
1909 else
1910 return 0;
1911}
1912
1913void inline_size
1914pri_adjust (EV_P_ W w)
1915{
1916 int pri = w->priority;
1917 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919 w->priority = pri;
1920}
1921
1421void inline_speed 1922void inline_speed
1422ev_start (EV_P_ W w, int active) 1923ev_start (EV_P_ W w, int active)
1423{ 1924{
1424 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1925 pri_adjust (EV_A_ w);
1425 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427 w->active = active; 1926 w->active = active;
1428 ev_ref (EV_A); 1927 ev_ref (EV_A);
1429} 1928}
1430 1929
1431void inline_size 1930void inline_size
… …
1435 w->active = 0; 1934 w->active = 0;
1436} 1935}
1437 1936
1438/*****************************************************************************/ 1937/*****************************************************************************/
1439 1938
1440void 1939void noinline
1441ev_io_start (EV_P_ ev_io *w) 1940ev_io_start (EV_P_ ev_io *w)
1442{ 1941{
1443 int fd = w->fd; 1942 int fd = w->fd;
1444 1943
1445 if (expect_false (ev_is_active (w))) 1944 if (expect_false (ev_is_active (w)))
… …
1447 1946
1448 assert (("ev_io_start called with negative fd", fd >= 0)); 1947 assert (("ev_io_start called with negative fd", fd >= 0));
1449 1948
1450 ev_start (EV_A_ (W)w, 1); 1949 ev_start (EV_A_ (W)w, 1);
1451 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1950 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1951 wlist_add (&anfds[fd].head, (WL)w);
1453 1952
1454 fd_change (EV_A_ fd); 1953 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1954 w->events &= ~EV_IOFDSET;
1455} 1955}
1456 1956
1457void 1957void noinline
1458ev_io_stop (EV_P_ ev_io *w) 1958ev_io_stop (EV_P_ ev_io *w)
1459{ 1959{
1460 ev_clear_pending (EV_A_ (W)w); 1960 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 1961 if (expect_false (!ev_is_active (w)))
1462 return; 1962 return;
1463 1963
1464 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1964 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465 1965
1466 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1966 wlist_del (&anfds[w->fd].head, (WL)w);
1467 ev_stop (EV_A_ (W)w); 1967 ev_stop (EV_A_ (W)w);
1468 1968
1469 fd_change (EV_A_ w->fd); 1969 fd_change (EV_A_ w->fd, 1);
1470} 1970}
1471 1971
1472void 1972void noinline
1473ev_timer_start (EV_P_ ev_timer *w) 1973ev_timer_start (EV_P_ ev_timer *w)
1474{ 1974{
1475 if (expect_false (ev_is_active (w))) 1975 if (expect_false (ev_is_active (w)))
1476 return; 1976 return;
1477 1977
1478 ((WT)w)->at += mn_now; 1978 ev_at (w) += mn_now;
1479 1979
1480 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1980 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481 1981
1482 ev_start (EV_A_ (W)w, ++timercnt); 1982 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1483 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1983 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1484 timers [timercnt - 1] = w; 1984 timers [ev_active (w)] = (WT)w;
1485 upheap ((WT *)timers, timercnt - 1); 1985 upheap (timers, ev_active (w));
1486 1986
1487 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1987 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1488} 1988}
1489 1989
1490void 1990void noinline
1491ev_timer_stop (EV_P_ ev_timer *w) 1991ev_timer_stop (EV_P_ ev_timer *w)
1492{ 1992{
1493 ev_clear_pending (EV_A_ (W)w); 1993 clear_pending (EV_A_ (W)w);
1494 if (expect_false (!ev_is_active (w))) 1994 if (expect_false (!ev_is_active (w)))
1495 return; 1995 return;
1496 1996
1997 {
1998 int active = ev_active (w);
1999
1497 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2000 assert (("internal timer heap corruption", timers [active] == (WT)w));
1498 2001
1499 if (expect_true (((W)w)->active < timercnt--)) 2002 if (expect_true (active < timercnt + HEAP0 - 1))
1500 { 2003 {
1501 timers [((W)w)->active - 1] = timers [timercnt]; 2004 timers [active] = timers [timercnt + HEAP0 - 1];
1502 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2005 adjustheap (timers, timercnt, active);
1503 } 2006 }
1504 2007
1505 ((WT)w)->at -= mn_now; 2008 --timercnt;
2009 }
2010
2011 ev_at (w) -= mn_now;
1506 2012
1507 ev_stop (EV_A_ (W)w); 2013 ev_stop (EV_A_ (W)w);
1508} 2014}
1509 2015
1510void 2016void noinline
1511ev_timer_again (EV_P_ ev_timer *w) 2017ev_timer_again (EV_P_ ev_timer *w)
1512{ 2018{
1513 if (ev_is_active (w)) 2019 if (ev_is_active (w))
1514 { 2020 {
1515 if (w->repeat) 2021 if (w->repeat)
1516 { 2022 {
1517 ((WT)w)->at = mn_now + w->repeat; 2023 ev_at (w) = mn_now + w->repeat;
1518 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2024 adjustheap (timers, timercnt, ev_active (w));
1519 } 2025 }
1520 else 2026 else
1521 ev_timer_stop (EV_A_ w); 2027 ev_timer_stop (EV_A_ w);
1522 } 2028 }
1523 else if (w->repeat) 2029 else if (w->repeat)
1524 { 2030 {
1525 w->at = w->repeat; 2031 ev_at (w) = w->repeat;
1526 ev_timer_start (EV_A_ w); 2032 ev_timer_start (EV_A_ w);
1527 } 2033 }
1528} 2034}
1529 2035
1530#if EV_PERIODIC_ENABLE 2036#if EV_PERIODIC_ENABLE
1531void 2037void noinline
1532ev_periodic_start (EV_P_ ev_periodic *w) 2038ev_periodic_start (EV_P_ ev_periodic *w)
1533{ 2039{
1534 if (expect_false (ev_is_active (w))) 2040 if (expect_false (ev_is_active (w)))
1535 return; 2041 return;
1536 2042
1537 if (w->reschedule_cb) 2043 if (w->reschedule_cb)
1538 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2044 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1539 else if (w->interval) 2045 else if (w->interval)
1540 { 2046 {
1541 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2047 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1542 /* this formula differs from the one in periodic_reify because we do not always round up */ 2048 /* this formula differs from the one in periodic_reify because we do not always round up */
1543 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2049 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544 } 2050 }
2051 else
2052 ev_at (w) = w->offset;
1545 2053
1546 ev_start (EV_A_ (W)w, ++periodiccnt); 2054 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1547 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2055 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1548 periodics [periodiccnt - 1] = w; 2056 periodics [ev_active (w)] = (WT)w;
1549 upheap ((WT *)periodics, periodiccnt - 1); 2057 upheap (periodics, ev_active (w));
1550 2058
1551 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2059 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1552} 2060}
1553 2061
1554void 2062void noinline
1555ev_periodic_stop (EV_P_ ev_periodic *w) 2063ev_periodic_stop (EV_P_ ev_periodic *w)
1556{ 2064{
1557 ev_clear_pending (EV_A_ (W)w); 2065 clear_pending (EV_A_ (W)w);
1558 if (expect_false (!ev_is_active (w))) 2066 if (expect_false (!ev_is_active (w)))
1559 return; 2067 return;
1560 2068
2069 {
2070 int active = ev_active (w);
2071
1561 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2072 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1562 2073
1563 if (expect_true (((W)w)->active < periodiccnt--)) 2074 if (expect_true (active < periodiccnt + HEAP0 - 1))
1564 { 2075 {
1565 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2076 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1566 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2077 adjustheap (periodics, periodiccnt, active);
1567 } 2078 }
2079
2080 --periodiccnt;
2081 }
1568 2082
1569 ev_stop (EV_A_ (W)w); 2083 ev_stop (EV_A_ (W)w);
1570} 2084}
1571 2085
1572void 2086void noinline
1573ev_periodic_again (EV_P_ ev_periodic *w) 2087ev_periodic_again (EV_P_ ev_periodic *w)
1574{ 2088{
1575 /* TODO: use adjustheap and recalculation */ 2089 /* TODO: use adjustheap and recalculation */
1576 ev_periodic_stop (EV_A_ w); 2090 ev_periodic_stop (EV_A_ w);
1577 ev_periodic_start (EV_A_ w); 2091 ev_periodic_start (EV_A_ w);
… …
1580 2094
1581#ifndef SA_RESTART 2095#ifndef SA_RESTART
1582# define SA_RESTART 0 2096# define SA_RESTART 0
1583#endif 2097#endif
1584 2098
1585void 2099void noinline
1586ev_signal_start (EV_P_ ev_signal *w) 2100ev_signal_start (EV_P_ ev_signal *w)
1587{ 2101{
1588#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1589 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2103 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590#endif 2104#endif
1591 if (expect_false (ev_is_active (w))) 2105 if (expect_false (ev_is_active (w)))
1592 return; 2106 return;
1593 2107
1594 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2108 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1595 2109
2110 evpipe_init (EV_A);
2111
2112 {
2113#ifndef _WIN32
2114 sigset_t full, prev;
2115 sigfillset (&full);
2116 sigprocmask (SIG_SETMASK, &full, &prev);
2117#endif
2118
2119 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2120
2121#ifndef _WIN32
2122 sigprocmask (SIG_SETMASK, &prev, 0);
2123#endif
2124 }
2125
1596 ev_start (EV_A_ (W)w, 1); 2126 ev_start (EV_A_ (W)w, 1);
1597 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2127 wlist_add (&signals [w->signum - 1].head, (WL)w);
1599 2128
1600 if (!((WL)w)->next) 2129 if (!((WL)w)->next)
1601 { 2130 {
1602#if _WIN32 2131#if _WIN32
1603 signal (w->signum, sighandler); 2132 signal (w->signum, ev_sighandler);
1604#else 2133#else
1605 struct sigaction sa; 2134 struct sigaction sa;
1606 sa.sa_handler = sighandler; 2135 sa.sa_handler = ev_sighandler;
1607 sigfillset (&sa.sa_mask); 2136 sigfillset (&sa.sa_mask);
1608 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2137 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1609 sigaction (w->signum, &sa, 0); 2138 sigaction (w->signum, &sa, 0);
1610#endif 2139#endif
1611 } 2140 }
1612} 2141}
1613 2142
1614void 2143void noinline
1615ev_signal_stop (EV_P_ ev_signal *w) 2144ev_signal_stop (EV_P_ ev_signal *w)
1616{ 2145{
1617 ev_clear_pending (EV_A_ (W)w); 2146 clear_pending (EV_A_ (W)w);
1618 if (expect_false (!ev_is_active (w))) 2147 if (expect_false (!ev_is_active (w)))
1619 return; 2148 return;
1620 2149
1621 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2150 wlist_del (&signals [w->signum - 1].head, (WL)w);
1622 ev_stop (EV_A_ (W)w); 2151 ev_stop (EV_A_ (W)w);
1623 2152
1624 if (!signals [w->signum - 1].head) 2153 if (!signals [w->signum - 1].head)
1625 signal (w->signum, SIG_DFL); 2154 signal (w->signum, SIG_DFL);
1626} 2155}
… …
1633#endif 2162#endif
1634 if (expect_false (ev_is_active (w))) 2163 if (expect_false (ev_is_active (w)))
1635 return; 2164 return;
1636 2165
1637 ev_start (EV_A_ (W)w, 1); 2166 ev_start (EV_A_ (W)w, 1);
1638 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2167 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639} 2168}
1640 2169
1641void 2170void
1642ev_child_stop (EV_P_ ev_child *w) 2171ev_child_stop (EV_P_ ev_child *w)
1643{ 2172{
1644 ev_clear_pending (EV_A_ (W)w); 2173 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w))) 2174 if (expect_false (!ev_is_active (w)))
1646 return; 2175 return;
1647 2176
1648 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2177 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649 ev_stop (EV_A_ (W)w); 2178 ev_stop (EV_A_ (W)w);
1650} 2179}
1651 2180
1652#if EV_STAT_ENABLE 2181#if EV_STAT_ENABLE
1653 2182
… …
1657# endif 2186# endif
1658 2187
1659#define DEF_STAT_INTERVAL 5.0074891 2188#define DEF_STAT_INTERVAL 5.0074891
1660#define MIN_STAT_INTERVAL 0.1074891 2189#define MIN_STAT_INTERVAL 0.1074891
1661 2190
2191static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192
2193#if EV_USE_INOTIFY
2194# define EV_INOTIFY_BUFSIZE 8192
2195
2196static void noinline
2197infy_add (EV_P_ ev_stat *w)
2198{
2199 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);
2200
2201 if (w->wd < 0)
2202 {
2203 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2204
2205 /* monitor some parent directory for speedup hints */
2206 /* note that exceeding the hardcoded limit is not a correctness issue, */
2207 /* but an efficiency issue only */
2208 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209 {
2210 char path [4096];
2211 strcpy (path, w->path);
2212
2213 do
2214 {
2215 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217
2218 char *pend = strrchr (path, '/');
2219
2220 if (!pend)
2221 break; /* whoops, no '/', complain to your admin */
2222
2223 *pend = 0;
2224 w->wd = inotify_add_watch (fs_fd, path, mask);
2225 }
2226 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227 }
2228 }
2229 else
2230 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231
2232 if (w->wd >= 0)
2233 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2234}
2235
2236static void noinline
2237infy_del (EV_P_ ev_stat *w)
2238{
2239 int slot;
2240 int wd = w->wd;
2241
2242 if (wd < 0)
2243 return;
2244
2245 w->wd = -2;
2246 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2247 wlist_del (&fs_hash [slot].head, (WL)w);
2248
2249 /* remove this watcher, if others are watching it, they will rearm */
2250 inotify_rm_watch (fs_fd, wd);
2251}
2252
2253static void noinline
2254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255{
2256 if (slot < 0)
2257 /* overflow, need to check for all hahs slots */
2258 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259 infy_wd (EV_A_ slot, wd, ev);
2260 else
2261 {
2262 WL w_;
2263
2264 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2265 {
2266 ev_stat *w = (ev_stat *)w_;
2267 w_ = w_->next; /* lets us remove this watcher and all before it */
2268
2269 if (w->wd == wd || wd == -1)
2270 {
2271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272 {
2273 w->wd = -1;
2274 infy_add (EV_A_ w); /* re-add, no matter what */
2275 }
2276
2277 stat_timer_cb (EV_A_ &w->timer, 0);
2278 }
2279 }
2280 }
2281}
2282
2283static void
2284infy_cb (EV_P_ ev_io *w, int revents)
2285{
2286 char buf [EV_INOTIFY_BUFSIZE];
2287 struct inotify_event *ev = (struct inotify_event *)buf;
2288 int ofs;
2289 int len = read (fs_fd, buf, sizeof (buf));
2290
2291 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293}
2294
2295void inline_size
2296infy_init (EV_P)
2297{
2298 if (fs_fd != -2)
2299 return;
2300
2301 fs_fd = inotify_init ();
2302
2303 if (fs_fd >= 0)
2304 {
2305 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2306 ev_set_priority (&fs_w, EV_MAXPRI);
2307 ev_io_start (EV_A_ &fs_w);
2308 }
2309}
2310
2311void inline_size
2312infy_fork (EV_P)
2313{
2314 int slot;
2315
2316 if (fs_fd < 0)
2317 return;
2318
2319 close (fs_fd);
2320 fs_fd = inotify_init ();
2321
2322 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2323 {
2324 WL w_ = fs_hash [slot].head;
2325 fs_hash [slot].head = 0;
2326
2327 while (w_)
2328 {
2329 ev_stat *w = (ev_stat *)w_;
2330 w_ = w_->next; /* lets us add this watcher */
2331
2332 w->wd = -1;
2333
2334 if (fs_fd >= 0)
2335 infy_add (EV_A_ w); /* re-add, no matter what */
2336 else
2337 ev_timer_start (EV_A_ &w->timer);
2338 }
2339
2340 }
2341}
2342
2343#endif
2344
1662void 2345void
1663ev_stat_stat (EV_P_ ev_stat *w) 2346ev_stat_stat (EV_P_ ev_stat *w)
1664{ 2347{
1665 if (lstat (w->path, &w->attr) < 0) 2348 if (lstat (w->path, &w->attr) < 0)
1666 w->attr.st_nlink = 0; 2349 w->attr.st_nlink = 0;
1667 else if (!w->attr.st_nlink) 2350 else if (!w->attr.st_nlink)
1668 w->attr.st_nlink = 1; 2351 w->attr.st_nlink = 1;
1669} 2352}
1670 2353
1671static void 2354static void noinline
1672stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2355stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673{ 2356{
1674 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2357 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675 2358
1676 /* we copy this here each the time so that */ 2359 /* we copy this here each the time so that */
1677 /* prev has the old value when the callback gets invoked */ 2360 /* prev has the old value when the callback gets invoked */
1678 w->prev = w->attr; 2361 w->prev = w->attr;
1679 ev_stat_stat (EV_A_ w); 2362 ev_stat_stat (EV_A_ w);
1680 2363
1681 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2364 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2365 if (
2366 w->prev.st_dev != w->attr.st_dev
2367 || w->prev.st_ino != w->attr.st_ino
2368 || w->prev.st_mode != w->attr.st_mode
2369 || w->prev.st_nlink != w->attr.st_nlink
2370 || w->prev.st_uid != w->attr.st_uid
2371 || w->prev.st_gid != w->attr.st_gid
2372 || w->prev.st_rdev != w->attr.st_rdev
2373 || w->prev.st_size != w->attr.st_size
2374 || w->prev.st_atime != w->attr.st_atime
2375 || w->prev.st_mtime != w->attr.st_mtime
2376 || w->prev.st_ctime != w->attr.st_ctime
2377 ) {
2378 #if EV_USE_INOTIFY
2379 infy_del (EV_A_ w);
2380 infy_add (EV_A_ w);
2381 ev_stat_stat (EV_A_ w); /* avoid race... */
2382 #endif
2383
1682 ev_feed_event (EV_A_ w, EV_STAT); 2384 ev_feed_event (EV_A_ w, EV_STAT);
2385 }
1683} 2386}
1684 2387
1685void 2388void
1686ev_stat_start (EV_P_ ev_stat *w) 2389ev_stat_start (EV_P_ ev_stat *w)
1687{ 2390{
… …
1697 if (w->interval < MIN_STAT_INTERVAL) 2400 if (w->interval < MIN_STAT_INTERVAL)
1698 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; 2401 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699 2402
1700 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2403 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701 ev_set_priority (&w->timer, ev_priority (w)); 2404 ev_set_priority (&w->timer, ev_priority (w));
2405
2406#if EV_USE_INOTIFY
2407 infy_init (EV_A);
2408
2409 if (fs_fd >= 0)
2410 infy_add (EV_A_ w);
2411 else
2412#endif
1702 ev_timer_start (EV_A_ &w->timer); 2413 ev_timer_start (EV_A_ &w->timer);
1703 2414
1704 ev_start (EV_A_ (W)w, 1); 2415 ev_start (EV_A_ (W)w, 1);
1705} 2416}
1706 2417
1707void 2418void
1708ev_stat_stop (EV_P_ ev_stat *w) 2419ev_stat_stop (EV_P_ ev_stat *w)
1709{ 2420{
1710 ev_clear_pending (EV_A_ (W)w); 2421 clear_pending (EV_A_ (W)w);
1711 if (expect_false (!ev_is_active (w))) 2422 if (expect_false (!ev_is_active (w)))
1712 return; 2423 return;
1713 2424
2425#if EV_USE_INOTIFY
2426 infy_del (EV_A_ w);
2427#endif
1714 ev_timer_stop (EV_A_ &w->timer); 2428 ev_timer_stop (EV_A_ &w->timer);
1715 2429
1716 ev_stop (EV_A_ (W)w); 2430 ev_stop (EV_A_ (W)w);
1717} 2431}
1718#endif 2432#endif
1719 2433
2434#if EV_IDLE_ENABLE
1720void 2435void
1721ev_idle_start (EV_P_ ev_idle *w) 2436ev_idle_start (EV_P_ ev_idle *w)
1722{ 2437{
1723 if (expect_false (ev_is_active (w))) 2438 if (expect_false (ev_is_active (w)))
1724 return; 2439 return;
1725 2440
2441 pri_adjust (EV_A_ (W)w);
2442
2443 {
2444 int active = ++idlecnt [ABSPRI (w)];
2445
2446 ++idleall;
1726 ev_start (EV_A_ (W)w, ++idlecnt); 2447 ev_start (EV_A_ (W)w, active);
2448
1727 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2449 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728 idles [idlecnt - 1] = w; 2450 idles [ABSPRI (w)][active - 1] = w;
2451 }
1729} 2452}
1730 2453
1731void 2454void
1732ev_idle_stop (EV_P_ ev_idle *w) 2455ev_idle_stop (EV_P_ ev_idle *w)
1733{ 2456{
1734 ev_clear_pending (EV_A_ (W)w); 2457 clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w))) 2458 if (expect_false (!ev_is_active (w)))
1736 return; 2459 return;
1737 2460
1738 { 2461 {
1739 int active = ((W)w)->active; 2462 int active = ev_active (w);
1740 idles [active - 1] = idles [--idlecnt]; 2463
1741 ((W)idles [active - 1])->active = active; 2464 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466
2467 ev_stop (EV_A_ (W)w);
2468 --idleall;
1742 } 2469 }
1743
1744 ev_stop (EV_A_ (W)w);
1745} 2470}
2471#endif
1746 2472
1747void 2473void
1748ev_prepare_start (EV_P_ ev_prepare *w) 2474ev_prepare_start (EV_P_ ev_prepare *w)
1749{ 2475{
1750 if (expect_false (ev_is_active (w))) 2476 if (expect_false (ev_is_active (w)))
… …
1756} 2482}
1757 2483
1758void 2484void
1759ev_prepare_stop (EV_P_ ev_prepare *w) 2485ev_prepare_stop (EV_P_ ev_prepare *w)
1760{ 2486{
1761 ev_clear_pending (EV_A_ (W)w); 2487 clear_pending (EV_A_ (W)w);
1762 if (expect_false (!ev_is_active (w))) 2488 if (expect_false (!ev_is_active (w)))
1763 return; 2489 return;
1764 2490
1765 { 2491 {
1766 int active = ((W)w)->active; 2492 int active = ev_active (w);
2493
1767 prepares [active - 1] = prepares [--preparecnt]; 2494 prepares [active - 1] = prepares [--preparecnt];
1768 ((W)prepares [active - 1])->active = active; 2495 ev_active (prepares [active - 1]) = active;
1769 } 2496 }
1770 2497
1771 ev_stop (EV_A_ (W)w); 2498 ev_stop (EV_A_ (W)w);
1772} 2499}
1773 2500
… …
1783} 2510}
1784 2511
1785void 2512void
1786ev_check_stop (EV_P_ ev_check *w) 2513ev_check_stop (EV_P_ ev_check *w)
1787{ 2514{
1788 ev_clear_pending (EV_A_ (W)w); 2515 clear_pending (EV_A_ (W)w);
1789 if (expect_false (!ev_is_active (w))) 2516 if (expect_false (!ev_is_active (w)))
1790 return; 2517 return;
1791 2518
1792 { 2519 {
1793 int active = ((W)w)->active; 2520 int active = ev_active (w);
2521
1794 checks [active - 1] = checks [--checkcnt]; 2522 checks [active - 1] = checks [--checkcnt];
1795 ((W)checks [active - 1])->active = active; 2523 ev_active (checks [active - 1]) = active;
1796 } 2524 }
1797 2525
1798 ev_stop (EV_A_ (W)w); 2526 ev_stop (EV_A_ (W)w);
1799} 2527}
1800 2528
1801#if EV_EMBED_ENABLE 2529#if EV_EMBED_ENABLE
1802void noinline 2530void noinline
1803ev_embed_sweep (EV_P_ ev_embed *w) 2531ev_embed_sweep (EV_P_ ev_embed *w)
1804{ 2532{
1805 ev_loop (w->loop, EVLOOP_NONBLOCK); 2533 ev_loop (w->other, EVLOOP_NONBLOCK);
1806} 2534}
1807 2535
1808static void 2536static void
1809embed_cb (EV_P_ ev_io *io, int revents) 2537embed_io_cb (EV_P_ ev_io *io, int revents)
1810{ 2538{
1811 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2539 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1812 2540
1813 if (ev_cb (w)) 2541 if (ev_cb (w))
1814 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2542 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815 else 2543 else
1816 ev_embed_sweep (loop, w); 2544 ev_loop (w->other, EVLOOP_NONBLOCK);
1817} 2545}
2546
2547static void
2548embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2549{
2550 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2551
2552 {
2553 struct ev_loop *loop = w->other;
2554
2555 while (fdchangecnt)
2556 {
2557 fd_reify (EV_A);
2558 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559 }
2560 }
2561}
2562
2563#if 0
2564static void
2565embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566{
2567 ev_idle_stop (EV_A_ idle);
2568}
2569#endif
1818 2570
1819void 2571void
1820ev_embed_start (EV_P_ ev_embed *w) 2572ev_embed_start (EV_P_ ev_embed *w)
1821{ 2573{
1822 if (expect_false (ev_is_active (w))) 2574 if (expect_false (ev_is_active (w)))
1823 return; 2575 return;
1824 2576
1825 { 2577 {
1826 struct ev_loop *loop = w->loop; 2578 struct ev_loop *loop = w->other;
1827 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2579 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2580 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829 } 2581 }
1830 2582
1831 ev_set_priority (&w->io, ev_priority (w)); 2583 ev_set_priority (&w->io, ev_priority (w));
1832 ev_io_start (EV_A_ &w->io); 2584 ev_io_start (EV_A_ &w->io);
1833 2585
2586 ev_prepare_init (&w->prepare, embed_prepare_cb);
2587 ev_set_priority (&w->prepare, EV_MINPRI);
2588 ev_prepare_start (EV_A_ &w->prepare);
2589
2590 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591
1834 ev_start (EV_A_ (W)w, 1); 2592 ev_start (EV_A_ (W)w, 1);
1835} 2593}
1836 2594
1837void 2595void
1838ev_embed_stop (EV_P_ ev_embed *w) 2596ev_embed_stop (EV_P_ ev_embed *w)
1839{ 2597{
1840 ev_clear_pending (EV_A_ (W)w); 2598 clear_pending (EV_A_ (W)w);
1841 if (expect_false (!ev_is_active (w))) 2599 if (expect_false (!ev_is_active (w)))
1842 return; 2600 return;
1843 2601
1844 ev_io_stop (EV_A_ &w->io); 2602 ev_io_stop (EV_A_ &w->io);
2603 ev_prepare_stop (EV_A_ &w->prepare);
1845 2604
1846 ev_stop (EV_A_ (W)w); 2605 ev_stop (EV_A_ (W)w);
1847} 2606}
1848#endif 2607#endif
1849 2608
… …
1860} 2619}
1861 2620
1862void 2621void
1863ev_fork_stop (EV_P_ ev_fork *w) 2622ev_fork_stop (EV_P_ ev_fork *w)
1864{ 2623{
1865 ev_clear_pending (EV_A_ (W)w); 2624 clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w))) 2625 if (expect_false (!ev_is_active (w)))
1867 return; 2626 return;
1868 2627
1869 { 2628 {
1870 int active = ((W)w)->active; 2629 int active = ev_active (w);
2630
1871 forks [active - 1] = forks [--forkcnt]; 2631 forks [active - 1] = forks [--forkcnt];
1872 ((W)forks [active - 1])->active = active; 2632 ev_active (forks [active - 1]) = active;
1873 } 2633 }
1874 2634
1875 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2636}
2637#endif
2638
2639#if EV_ASYNC_ENABLE
2640void
2641ev_async_start (EV_P_ ev_async *w)
2642{
2643 if (expect_false (ev_is_active (w)))
2644 return;
2645
2646 evpipe_init (EV_A);
2647
2648 ev_start (EV_A_ (W)w, ++asynccnt);
2649 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650 asyncs [asynccnt - 1] = w;
2651}
2652
2653void
2654ev_async_stop (EV_P_ ev_async *w)
2655{
2656 clear_pending (EV_A_ (W)w);
2657 if (expect_false (!ev_is_active (w)))
2658 return;
2659
2660 {
2661 int active = ev_active (w);
2662
2663 asyncs [active - 1] = asyncs [--asynccnt];
2664 ev_active (asyncs [active - 1]) = active;
2665 }
2666
2667 ev_stop (EV_A_ (W)w);
2668}
2669
2670void
2671ev_async_send (EV_P_ ev_async *w)
2672{
2673 w->sent = 1;
2674 evpipe_write (EV_A_ &gotasync);
1876} 2675}
1877#endif 2676#endif
1878 2677
1879/*****************************************************************************/ 2678/*****************************************************************************/
1880 2679
… …
1938 ev_timer_set (&once->to, timeout, 0.); 2737 ev_timer_set (&once->to, timeout, 0.);
1939 ev_timer_start (EV_A_ &once->to); 2738 ev_timer_start (EV_A_ &once->to);
1940 } 2739 }
1941} 2740}
1942 2741
2742#if EV_MULTIPLICITY
2743 #include "ev_wrap.h"
2744#endif
2745
1943#ifdef __cplusplus 2746#ifdef __cplusplus
1944} 2747}
1945#endif 2748#endif
1946 2749

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