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Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.253 by root, Sat May 31 03:13:27 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
… …
102# else 119# else
103# define EV_USE_INOTIFY 0 120# define EV_USE_INOTIFY 0
104# endif 121# endif
105# endif 122# endif
106 123
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
107#endif 132#endif
108 133
109#include <math.h> 134#include <math.h>
110#include <stdlib.h> 135#include <stdlib.h>
111#include <fcntl.h> 136#include <fcntl.h>
… …
136# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
138# endif 163# endif
139#endif 164#endif
140 165
141/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
142 167
143#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1
171# else
144# define EV_USE_MONOTONIC 0 172# define EV_USE_MONOTONIC 0
173# endif
145#endif 174#endif
146 175
147#ifndef EV_USE_REALTIME 176#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 177# define EV_USE_REALTIME 0
178#endif
179
180#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1
183# else
184# define EV_USE_NANOSLEEP 0
185# endif
149#endif 186#endif
150 187
151#ifndef EV_USE_SELECT 188#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 189# define EV_USE_SELECT 1
153#endif 190#endif
… …
159# define EV_USE_POLL 1 196# define EV_USE_POLL 1
160# endif 197# endif
161#endif 198#endif
162 199
163#ifndef EV_USE_EPOLL 200#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1
203# else
164# define EV_USE_EPOLL 0 204# define EV_USE_EPOLL 0
205# endif
165#endif 206#endif
166 207
167#ifndef EV_USE_KQUEUE 208#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 209# define EV_USE_KQUEUE 0
169#endif 210#endif
… …
171#ifndef EV_USE_PORT 212#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 213# define EV_USE_PORT 0
173#endif 214#endif
174 215
175#ifndef EV_USE_INOTIFY 216#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1
219# else
176# define EV_USE_INOTIFY 0 220# define EV_USE_INOTIFY 0
221# endif
177#endif 222#endif
178 223
179#ifndef EV_PID_HASHSIZE 224#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 225# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 226# define EV_PID_HASHSIZE 1
… …
190# else 235# else
191# define EV_INOTIFY_HASHSIZE 16 236# define EV_INOTIFY_HASHSIZE 16
192# endif 237# endif
193#endif 238#endif
194 239
195/**/ 240#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1
243# else
244# define EV_USE_EVENTFD 0
245# endif
246#endif
247
248#if 0 /* debugging */
249# define EV_VERIFY 3
250# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1
252#endif
253
254#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL
256#endif
257
258#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL
260#endif
261
262#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL
264#endif
265
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 267
197#ifndef CLOCK_MONOTONIC 268#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 269# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 270# define EV_USE_MONOTONIC 0
200#endif 271#endif
… …
202#ifndef CLOCK_REALTIME 273#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 274# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 275# define EV_USE_REALTIME 0
205#endif 276#endif
206 277
278#if !EV_STAT_ENABLE
279# undef EV_USE_INOTIFY
280# define EV_USE_INOTIFY 0
281#endif
282
283#if !EV_USE_NANOSLEEP
284# ifndef _WIN32
285# include <sys/select.h>
286# endif
287#endif
288
289#if EV_USE_INOTIFY
290# include <sys/inotify.h>
291#endif
292
207#if EV_SELECT_IS_WINSOCKET 293#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 294# include <winsock.h>
209#endif 295#endif
210 296
211#if !EV_STAT_ENABLE 297#if EV_USE_EVENTFD
212# define EV_USE_INOTIFY 0 298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h>
300# ifdef __cplusplus
301extern "C" {
213#endif 302# endif
214 303int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 304# ifdef __cplusplus
216# include <sys/inotify.h> 305}
306# endif
217#endif 307#endif
218 308
219/**/ 309/**/
310
311#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
313#else
314# define EV_FREQUENT_CHECK do { } while (0)
315#endif
316
317/*
318 * This is used to avoid floating point rounding problems.
319 * It is added to ev_rt_now when scheduling periodics
320 * to ensure progress, time-wise, even when rounding
321 * errors are against us.
322 * This value is good at least till the year 4000.
323 * Better solutions welcome.
324 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 326
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 327#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 328#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224 330
225#if __GNUC__ >= 3 331#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 332# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 333# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 334#else
236# define expect(expr,value) (expr) 335# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 336# define noinline
337# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
338# define inline
339# endif
240#endif 340#endif
241 341
242#define expect_false(expr) expect ((expr) != 0, 0) 342#define expect_false(expr) expect ((expr) != 0, 0)
243#define expect_true(expr) expect ((expr) != 0, 1) 343#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline
345
346#if EV_MINIMAL
347# define inline_speed static noinline
348#else
349# define inline_speed static inline
350#endif
244 351
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246#define ABSPRI(w) ((w)->priority - EV_MINPRI) 353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 354
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 355#define EMPTY /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */ 356#define EMPTY2(a,b) /* used to suppress some warnings */
250 357
251typedef ev_watcher *W; 358typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 359typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 360typedef ev_watcher_time *WT;
254 361
362#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at
364
365#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369#endif
256 370
257#ifdef _WIN32 371#ifdef _WIN32
258# include "ev_win32.c" 372# include "ev_win32.c"
259#endif 373#endif
260 374
… …
281 perror (msg); 395 perror (msg);
282 abort (); 396 abort ();
283 } 397 }
284} 398}
285 399
400static void *
401ev_realloc_emul (void *ptr, long size)
402{
403 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and
405 * the single unix specification, so work around them here.
406 */
407
408 if (size)
409 return realloc (ptr, size);
410
411 free (ptr);
412 return 0;
413}
414
286static void *(*alloc)(void *ptr, long size); 415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287 416
288void 417void
289ev_set_allocator (void *(*cb)(void *ptr, long size)) 418ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 419{
291 alloc = cb; 420 alloc = cb;
292} 421}
293 422
294inline_speed void * 423inline_speed void *
295ev_realloc (void *ptr, long size) 424ev_realloc (void *ptr, long size)
296{ 425{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 426 ptr = alloc (ptr, size);
298 427
299 if (!ptr && size) 428 if (!ptr && size)
300 { 429 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort (); 431 abort ();
… …
325 W w; 454 W w;
326 int events; 455 int events;
327} ANPENDING; 456} ANPENDING;
328 457
329#if EV_USE_INOTIFY 458#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */
330typedef struct 460typedef struct
331{ 461{
332 WL head; 462 WL head;
333} ANFS; 463} ANFS;
464#endif
465
466/* Heap Entry */
467#if EV_HEAP_CACHE_AT
468 typedef struct {
469 ev_tstamp at;
470 WT w;
471 } ANHE;
472
473 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else
477 typedef WT ANHE;
478
479 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he)
334#endif 482#endif
335 483
336#if EV_MULTIPLICITY 484#if EV_MULTIPLICITY
337 485
338 struct ev_loop 486 struct ev_loop
… …
396{ 544{
397 return ev_rt_now; 545 return ev_rt_now;
398} 546}
399#endif 547#endif
400 548
549void
550ev_sleep (ev_tstamp delay)
551{
552 if (delay > 0.)
553 {
554#if EV_USE_NANOSLEEP
555 struct timespec ts;
556
557 ts.tv_sec = (time_t)delay;
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0);
561#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3));
563#else
564 struct timeval tv;
565
566 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568
569 select (0, 0, 0, 0, &tv);
570#endif
571 }
572}
573
574/*****************************************************************************/
575
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577
401int inline_size 578int inline_size
402array_nextsize (int elem, int cur, int cnt) 579array_nextsize (int elem, int cur, int cnt)
403{ 580{
404 int ncur = cur + 1; 581 int ncur = cur + 1;
405 582
406 do 583 do
407 ncur <<= 1; 584 ncur <<= 1;
408 while (cnt > ncur); 585 while (cnt > ncur);
409 586
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 587 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096) 588 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412 { 589 {
413 ncur *= elem; 590 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 591 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415 ncur = ncur - sizeof (void *) * 4; 592 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem; 593 ncur /= elem;
417 } 594 }
418 595
419 return ncur; 596 return ncur;
420} 597}
421 598
422inline_speed void * 599static noinline void *
423array_realloc (int elem, void *base, int *cur, int cnt) 600array_realloc (int elem, void *base, int *cur, int cnt)
424{ 601{
425 *cur = array_nextsize (elem, *cur, cnt); 602 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur); 603 return ev_realloc (base, elem * *cur);
427} 604}
… …
452 629
453void noinline 630void noinline
454ev_feed_event (EV_P_ void *w, int revents) 631ev_feed_event (EV_P_ void *w, int revents)
455{ 632{
456 W w_ = (W)w; 633 W w_ = (W)w;
634 int pri = ABSPRI (w_);
457 635
458 if (expect_false (w_->pending)) 636 if (expect_false (w_->pending))
637 pendings [pri][w_->pending - 1].events |= revents;
638 else
459 { 639 {
640 w_->pending = ++pendingcnt [pri];
641 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
642 pendings [pri][w_->pending - 1].w = w_;
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 643 pendings [pri][w_->pending - 1].events = revents;
461 return;
462 } 644 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468} 645}
469 646
470void inline_size 647void inline_speed
471queue_events (EV_P_ W *events, int eventcnt, int type) 648queue_events (EV_P_ W *events, int eventcnt, int type)
472{ 649{
473 int i; 650 int i;
474 651
475 for (i = 0; i < eventcnt; ++i) 652 for (i = 0; i < eventcnt; ++i)
… …
507} 684}
508 685
509void 686void
510ev_feed_fd_event (EV_P_ int fd, int revents) 687ev_feed_fd_event (EV_P_ int fd, int revents)
511{ 688{
689 if (fd >= 0 && fd < anfdmax)
512 fd_event (EV_A_ fd, revents); 690 fd_event (EV_A_ fd, revents);
513} 691}
514 692
515void inline_size 693void inline_size
516fd_reify (EV_P) 694fd_reify (EV_P)
517{ 695{
… …
521 { 699 {
522 int fd = fdchanges [i]; 700 int fd = fdchanges [i];
523 ANFD *anfd = anfds + fd; 701 ANFD *anfd = anfds + fd;
524 ev_io *w; 702 ev_io *w;
525 703
526 int events = 0; 704 unsigned char events = 0;
527 705
528 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 706 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
529 events |= w->events; 707 events |= (unsigned char)w->events;
530 708
531#if EV_SELECT_IS_WINSOCKET 709#if EV_SELECT_IS_WINSOCKET
532 if (events) 710 if (events)
533 { 711 {
534 unsigned long argp; 712 unsigned long argp;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
535 anfd->handle = _get_osfhandle (fd); 716 anfd->handle = _get_osfhandle (fd);
717 #endif
536 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537 } 719 }
538#endif 720#endif
539 721
722 {
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
540 anfd->reify = 0; 726 anfd->reify = 0;
541
542 backend_modify (EV_A_ fd, anfd->events, events);
543 anfd->events = events; 727 anfd->events = events;
728
729 if (o_events != events || o_reify & EV_IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events);
731 }
544 } 732 }
545 733
546 fdchangecnt = 0; 734 fdchangecnt = 0;
547} 735}
548 736
549void inline_size 737void inline_size
550fd_change (EV_P_ int fd) 738fd_change (EV_P_ int fd, int flags)
551{ 739{
552 if (expect_false (anfds [fd].reify)) 740 unsigned char reify = anfds [fd].reify;
553 return;
554
555 anfds [fd].reify = 1; 741 anfds [fd].reify |= flags;
556 742
743 if (expect_true (!reify))
744 {
557 ++fdchangecnt; 745 ++fdchangecnt;
558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559 fdchanges [fdchangecnt - 1] = fd; 747 fdchanges [fdchangecnt - 1] = fd;
748 }
560} 749}
561 750
562void inline_speed 751void inline_speed
563fd_kill (EV_P_ int fd) 752fd_kill (EV_P_ int fd)
564{ 753{
… …
615 804
616 for (fd = 0; fd < anfdmax; ++fd) 805 for (fd = 0; fd < anfdmax; ++fd)
617 if (anfds [fd].events) 806 if (anfds [fd].events)
618 { 807 {
619 anfds [fd].events = 0; 808 anfds [fd].events = 0;
620 fd_change (EV_A_ fd); 809 fd_change (EV_A_ fd, EV_IOFDSET | 1);
621 } 810 }
622} 811}
623 812
624/*****************************************************************************/ 813/*****************************************************************************/
625 814
815/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree.
819 */
820
821/*
822 * at the moment we allow libev the luxury of two heaps,
823 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
824 * which is more cache-efficient.
825 * the difference is about 5% with 50000+ watchers.
826 */
827#if EV_USE_4HEAP
828
829#define DHEAP 4
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k))
833
834/* away from the root */
626void inline_speed 835void inline_speed
627upheap (WT *heap, int k) 836downheap (ANHE *heap, int N, int k)
628{ 837{
629 WT w = heap [k]; 838 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0;
630 840
631 while (k && heap [k >> 1]->at > w->at) 841 for (;;)
632 {
633 heap [k] = heap [k >> 1];
634 ((W)heap [k])->active = k + 1;
635 k >>= 1;
636 } 842 {
843 ev_tstamp minat;
844 ANHE *minpos;
845 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
637 846
847 /* find minimum child */
848 if (expect_true (pos + DHEAP - 1 < E))
849 {
850 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
851 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else if (pos < E)
856 {
857 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
858 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
859 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
860 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
861 }
862 else
863 break;
864
865 if (ANHE_at (he) <= minat)
866 break;
867
868 heap [k] = *minpos;
869 ev_active (ANHE_w (*minpos)) = k;
870
871 k = minpos - heap;
872 }
873
638 heap [k] = w; 874 heap [k] = he;
639 ((W)heap [k])->active = k + 1; 875 ev_active (ANHE_w (he)) = k;
640
641} 876}
642 877
878#else /* 4HEAP */
879
880#define HEAP0 1
881#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p))
883
884/* away from the root */
643void inline_speed 885void inline_speed
644downheap (WT *heap, int N, int k) 886downheap (ANHE *heap, int N, int k)
645{ 887{
646 WT w = heap [k]; 888 ANHE he = heap [k];
647 889
648 while (k < (N >> 1)) 890 for (;;)
649 { 891 {
650 int j = k << 1; 892 int c = k << 1;
651 893
652 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 894 if (c > N + HEAP0 - 1)
653 ++j;
654
655 if (w->at <= heap [j]->at)
656 break; 895 break;
657 896
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0;
899
900 if (ANHE_at (he) <= ANHE_at (heap [c]))
901 break;
902
658 heap [k] = heap [j]; 903 heap [k] = heap [c];
659 ((W)heap [k])->active = k + 1; 904 ev_active (ANHE_w (heap [k])) = k;
905
660 k = j; 906 k = c;
661 } 907 }
662 908
663 heap [k] = w; 909 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 910 ev_active (ANHE_w (he)) = k;
911}
912#endif
913
914/* towards the root */
915void inline_speed
916upheap (ANHE *heap, int k)
917{
918 ANHE he = heap [k];
919
920 for (;;)
921 {
922 int p = HPARENT (k);
923
924 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
925 break;
926
927 heap [k] = heap [p];
928 ev_active (ANHE_w (heap [k])) = k;
929 k = p;
930 }
931
932 heap [k] = he;
933 ev_active (ANHE_w (he)) = k;
665} 934}
666 935
667void inline_size 936void inline_size
668adjustheap (WT *heap, int N, int k) 937adjustheap (ANHE *heap, int N, int k)
669{ 938{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
670 upheap (heap, k); 940 upheap (heap, k);
941 else
671 downheap (heap, N, k); 942 downheap (heap, N, k);
943}
944
945/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size
947reheap (ANHE *heap, int N)
948{
949 int i;
950
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
952 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
953 for (i = 0; i < N; ++i)
954 upheap (heap, i + HEAP0);
672} 955}
673 956
674/*****************************************************************************/ 957/*****************************************************************************/
675 958
676typedef struct 959typedef struct
677{ 960{
678 WL head; 961 WL head;
679 sig_atomic_t volatile gotsig; 962 EV_ATOMIC_T gotsig;
680} ANSIG; 963} ANSIG;
681 964
682static ANSIG *signals; 965static ANSIG *signals;
683static int signalmax; 966static int signalmax;
684 967
685static int sigpipe [2]; 968static EV_ATOMIC_T gotsig;
686static sig_atomic_t volatile gotsig;
687static ev_io sigev;
688 969
689void inline_size 970void inline_size
690signals_init (ANSIG *base, int count) 971signals_init (ANSIG *base, int count)
691{ 972{
692 while (count--) 973 while (count--)
… …
696 977
697 ++base; 978 ++base;
698 } 979 }
699} 980}
700 981
701static void 982/*****************************************************************************/
702sighandler (int signum)
703{
704#if _WIN32
705 signal (signum, sighandler);
706#endif
707 983
708 signals [signum - 1].gotsig = 1;
709
710 if (!gotsig)
711 {
712 int old_errno = errno;
713 gotsig = 1;
714 write (sigpipe [1], &signum, 1);
715 errno = old_errno;
716 }
717}
718
719void noinline
720ev_feed_signal_event (EV_P_ int signum)
721{
722 WL w;
723
724#if EV_MULTIPLICITY
725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726#endif
727
728 --signum;
729
730 if (signum < 0 || signum >= signalmax)
731 return;
732
733 signals [signum].gotsig = 0;
734
735 for (w = signals [signum].head; w; w = w->next)
736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737}
738
739static void
740sigcb (EV_P_ ev_io *iow, int revents)
741{
742 int signum;
743
744 read (sigpipe [0], &revents, 1);
745 gotsig = 0;
746
747 for (signum = signalmax; signum--; )
748 if (signals [signum].gotsig)
749 ev_feed_signal_event (EV_A_ signum + 1);
750}
751
752void inline_size 984void inline_speed
753fd_intern (int fd) 985fd_intern (int fd)
754{ 986{
755#ifdef _WIN32 987#ifdef _WIN32
756 int arg = 1; 988 int arg = 1;
757 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
760 fcntl (fd, F_SETFL, O_NONBLOCK); 992 fcntl (fd, F_SETFL, O_NONBLOCK);
761#endif 993#endif
762} 994}
763 995
764static void noinline 996static void noinline
765siginit (EV_P) 997evpipe_init (EV_P)
766{ 998{
999 if (!ev_is_active (&pipeev))
1000 {
1001#if EV_USE_EVENTFD
1002 if ((evfd = eventfd (0, 0)) >= 0)
1003 {
1004 evpipe [0] = -1;
1005 fd_intern (evfd);
1006 ev_io_set (&pipeev, evfd, EV_READ);
1007 }
1008 else
1009#endif
1010 {
1011 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe");
1013
767 fd_intern (sigpipe [0]); 1014 fd_intern (evpipe [0]);
768 fd_intern (sigpipe [1]); 1015 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ);
1017 }
769 1018
770 ev_io_set (&sigev, sigpipe [0], EV_READ);
771 ev_io_start (EV_A_ &sigev); 1019 ev_io_start (EV_A_ &pipeev);
772 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1020 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 }
1022}
1023
1024void inline_size
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{
1027 if (!*flag)
1028 {
1029 int old_errno = errno; /* save errno because write might clobber it */
1030
1031 *flag = 1;
1032
1033#if EV_USE_EVENTFD
1034 if (evfd >= 0)
1035 {
1036 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t));
1038 }
1039 else
1040#endif
1041 write (evpipe [1], &old_errno, 1);
1042
1043 errno = old_errno;
1044 }
1045}
1046
1047static void
1048pipecb (EV_P_ ev_io *iow, int revents)
1049{
1050#if EV_USE_EVENTFD
1051 if (evfd >= 0)
1052 {
1053 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t));
1055 }
1056 else
1057#endif
1058 {
1059 char dummy;
1060 read (evpipe [0], &dummy, 1);
1061 }
1062
1063 if (gotsig && ev_is_default_loop (EV_A))
1064 {
1065 int signum;
1066 gotsig = 0;
1067
1068 for (signum = signalmax; signum--; )
1069 if (signals [signum].gotsig)
1070 ev_feed_signal_event (EV_A_ signum + 1);
1071 }
1072
1073#if EV_ASYNC_ENABLE
1074 if (gotasync)
1075 {
1076 int i;
1077 gotasync = 0;
1078
1079 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent)
1081 {
1082 asyncs [i]->sent = 0;
1083 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1084 }
1085 }
1086#endif
773} 1087}
774 1088
775/*****************************************************************************/ 1089/*****************************************************************************/
776 1090
1091static void
1092ev_sighandler (int signum)
1093{
1094#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct;
1096#endif
1097
1098#if _WIN32
1099 signal (signum, ev_sighandler);
1100#endif
1101
1102 signals [signum - 1].gotsig = 1;
1103 evpipe_write (EV_A_ &gotsig);
1104}
1105
1106void noinline
1107ev_feed_signal_event (EV_P_ int signum)
1108{
1109 WL w;
1110
1111#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113#endif
1114
1115 --signum;
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return;
1119
1120 signals [signum].gotsig = 0;
1121
1122 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124}
1125
1126/*****************************************************************************/
1127
777static ev_child *childs [EV_PID_HASHSIZE]; 1128static WL childs [EV_PID_HASHSIZE];
778 1129
779#ifndef _WIN32 1130#ifndef _WIN32
780 1131
781static ev_signal childev; 1132static ev_signal childev;
782 1133
1134#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0
1136#endif
1137
783void inline_speed 1138void inline_speed
784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1139child_reap (EV_P_ int chain, int pid, int status)
785{ 1140{
786 ev_child *w; 1141 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787 1143
788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 {
789 if (w->pid == pid || !w->pid) 1146 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1)))
790 { 1148 {
791 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792 w->rpid = pid; 1150 w->rpid = pid;
793 w->rstatus = status; 1151 w->rstatus = status;
794 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1152 ev_feed_event (EV_A_ (W)w, EV_CHILD);
795 } 1153 }
1154 }
796} 1155}
797 1156
798#ifndef WCONTINUED 1157#ifndef WCONTINUED
799# define WCONTINUED 0 1158# define WCONTINUED 0
800#endif 1159#endif
… …
809 if (!WCONTINUED 1168 if (!WCONTINUED
810 || errno != EINVAL 1169 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1170 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return; 1171 return;
813 1172
814 /* make sure we are called again until all childs have been reaped */ 1173 /* make sure we are called again until all children have been reaped */
815 /* we need to do it this way so that the callback gets called before we continue */ 1174 /* we need to do it this way so that the callback gets called before we continue */
816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817 1176
818 child_reap (EV_A_ sw, pid, pid, status); 1177 child_reap (EV_A_ pid, pid, status);
819 if (EV_PID_HASHSIZE > 1) 1178 if (EV_PID_HASHSIZE > 1)
820 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821} 1180}
822 1181
823#endif 1182#endif
824 1183
825/*****************************************************************************/ 1184/*****************************************************************************/
… …
897} 1256}
898 1257
899unsigned int 1258unsigned int
900ev_embeddable_backends (void) 1259ev_embeddable_backends (void)
901{ 1260{
902 return EVBACKEND_EPOLL 1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903 | EVBACKEND_KQUEUE 1262
904 | EVBACKEND_PORT; 1263 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1264 /* please fix it and tell me how to detect the fix */
1265 flags &= ~EVBACKEND_EPOLL;
1266
1267 return flags;
905} 1268}
906 1269
907unsigned int 1270unsigned int
908ev_backend (EV_P) 1271ev_backend (EV_P)
909{ 1272{
… …
912 1275
913unsigned int 1276unsigned int
914ev_loop_count (EV_P) 1277ev_loop_count (EV_P)
915{ 1278{
916 return loop_count; 1279 return loop_count;
1280}
1281
1282void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{
1285 io_blocktime = interval;
1286}
1287
1288void
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{
1291 timeout_blocktime = interval;
917} 1292}
918 1293
919static void noinline 1294static void noinline
920loop_init (EV_P_ unsigned int flags) 1295loop_init (EV_P_ unsigned int flags)
921{ 1296{
… …
927 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928 have_monotonic = 1; 1303 have_monotonic = 1;
929 } 1304 }
930#endif 1305#endif
931 1306
932 ev_rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
933 mn_now = get_clock (); 1308 mn_now = get_clock ();
934 now_floor = mn_now; 1309 now_floor = mn_now;
935 rtmn_diff = ev_rt_now - mn_now; 1310 rtmn_diff = ev_rt_now - mn_now;
1311
1312 io_blocktime = 0.;
1313 timeout_blocktime = 0.;
1314 backend = 0;
1315 backend_fd = -1;
1316 gotasync = 0;
1317#if EV_USE_INOTIFY
1318 fs_fd = -2;
1319#endif
936 1320
937 /* pid check not overridable via env */ 1321 /* pid check not overridable via env */
938#ifndef _WIN32 1322#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK) 1323 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid (); 1324 curpid = getpid ();
… …
943 if (!(flags & EVFLAG_NOENV) 1327 if (!(flags & EVFLAG_NOENV)
944 && !enable_secure () 1328 && !enable_secure ()
945 && getenv ("LIBEV_FLAGS")) 1329 && getenv ("LIBEV_FLAGS"))
946 flags = atoi (getenv ("LIBEV_FLAGS")); 1330 flags = atoi (getenv ("LIBEV_FLAGS"));
947 1331
948 if (!(flags & 0x0000ffffUL)) 1332 if (!(flags & 0x0000ffffU))
949 flags |= ev_recommended_backends (); 1333 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
953#if EV_USE_INOTIFY
954 fs_fd = -2;
955#endif
956 1334
957#if EV_USE_PORT 1335#if EV_USE_PORT
958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959#endif 1337#endif
960#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
… …
968#endif 1346#endif
969#if EV_USE_SELECT 1347#if EV_USE_SELECT
970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971#endif 1349#endif
972 1350
973 ev_init (&sigev, sigcb); 1351 ev_init (&pipeev, pipecb);
974 ev_set_priority (&sigev, EV_MAXPRI); 1352 ev_set_priority (&pipeev, EV_MAXPRI);
975 } 1353 }
976} 1354}
977 1355
978static void noinline 1356static void noinline
979loop_destroy (EV_P) 1357loop_destroy (EV_P)
980{ 1358{
981 int i; 1359 int i;
1360
1361 if (ev_is_active (&pipeev))
1362 {
1363 ev_ref (EV_A); /* signal watcher */
1364 ev_io_stop (EV_A_ &pipeev);
1365
1366#if EV_USE_EVENTFD
1367 if (evfd >= 0)
1368 close (evfd);
1369#endif
1370
1371 if (evpipe [0] >= 0)
1372 {
1373 close (evpipe [0]);
1374 close (evpipe [1]);
1375 }
1376 }
982 1377
983#if EV_USE_INOTIFY 1378#if EV_USE_INOTIFY
984 if (fs_fd >= 0) 1379 if (fs_fd >= 0)
985 close (fs_fd); 1380 close (fs_fd);
986#endif 1381#endif
… …
1003#if EV_USE_SELECT 1398#if EV_USE_SELECT
1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1399 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1005#endif 1400#endif
1006 1401
1007 for (i = NUMPRI; i--; ) 1402 for (i = NUMPRI; i--; )
1403 {
1008 array_free (pending, [i]); 1404 array_free (pending, [i]);
1405#if EV_IDLE_ENABLE
1406 array_free (idle, [i]);
1407#endif
1408 }
1409
1410 ev_free (anfds); anfdmax = 0;
1009 1411
1010 /* have to use the microsoft-never-gets-it-right macro */ 1412 /* have to use the microsoft-never-gets-it-right macro */
1011 array_free (fdchange, EMPTY0); 1413 array_free (fdchange, EMPTY);
1012 array_free (timer, EMPTY0); 1414 array_free (timer, EMPTY);
1013#if EV_PERIODIC_ENABLE 1415#if EV_PERIODIC_ENABLE
1014 array_free (periodic, EMPTY0); 1416 array_free (periodic, EMPTY);
1015#endif 1417#endif
1418#if EV_FORK_ENABLE
1016 array_free (idle, EMPTY0); 1419 array_free (fork, EMPTY);
1420#endif
1017 array_free (prepare, EMPTY0); 1421 array_free (prepare, EMPTY);
1018 array_free (check, EMPTY0); 1422 array_free (check, EMPTY);
1423#if EV_ASYNC_ENABLE
1424 array_free (async, EMPTY);
1425#endif
1019 1426
1020 backend = 0; 1427 backend = 0;
1021} 1428}
1022 1429
1430#if EV_USE_INOTIFY
1023void inline_size infy_fork (EV_P); 1431void inline_size infy_fork (EV_P);
1432#endif
1024 1433
1025void inline_size 1434void inline_size
1026loop_fork (EV_P) 1435loop_fork (EV_P)
1027{ 1436{
1028#if EV_USE_PORT 1437#if EV_USE_PORT
… …
1036#endif 1445#endif
1037#if EV_USE_INOTIFY 1446#if EV_USE_INOTIFY
1038 infy_fork (EV_A); 1447 infy_fork (EV_A);
1039#endif 1448#endif
1040 1449
1041 if (ev_is_active (&sigev)) 1450 if (ev_is_active (&pipeev))
1042 { 1451 {
1043 /* default loop */ 1452 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */
1454 gotsig = 1;
1455#if EV_ASYNC_ENABLE
1456 gotasync = 1;
1457#endif
1044 1458
1045 ev_ref (EV_A); 1459 ev_ref (EV_A);
1046 ev_io_stop (EV_A_ &sigev); 1460 ev_io_stop (EV_A_ &pipeev);
1461
1462#if EV_USE_EVENTFD
1463 if (evfd >= 0)
1464 close (evfd);
1465#endif
1466
1467 if (evpipe [0] >= 0)
1468 {
1047 close (sigpipe [0]); 1469 close (evpipe [0]);
1048 close (sigpipe [1]); 1470 close (evpipe [1]);
1471 }
1049 1472
1050 while (pipe (sigpipe))
1051 syserr ("(libev) error creating pipe");
1052
1053 siginit (EV_A); 1473 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ);
1054 } 1476 }
1055 1477
1056 postfork = 0; 1478 postfork = 0;
1057} 1479}
1058 1480
1059#if EV_MULTIPLICITY 1481#if EV_MULTIPLICITY
1482
1060struct ev_loop * 1483struct ev_loop *
1061ev_loop_new (unsigned int flags) 1484ev_loop_new (unsigned int flags)
1062{ 1485{
1063 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1064 1487
… …
1080} 1503}
1081 1504
1082void 1505void
1083ev_loop_fork (EV_P) 1506ev_loop_fork (EV_P)
1084{ 1507{
1085 postfork = 1; 1508 postfork = 1; /* must be in line with ev_default_fork */
1086} 1509}
1087 1510
1511#if EV_VERIFY
1512void noinline
1513verify_watcher (EV_P_ W w)
1514{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516
1517 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519}
1520
1521static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N)
1523{
1524 int i;
1525
1526 for (i = HEAP0; i < N + HEAP0; ++i)
1527 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 }
1534}
1535
1536static void noinline
1537array_verify (EV_P_ W *ws, int cnt)
1538{
1539 while (cnt--)
1540 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]);
1543 }
1544}
1545#endif
1546
1547void
1548ev_loop_verify (EV_P)
1549{
1550#if EV_VERIFY
1551 int i;
1552 WL w;
1553
1554 assert (activecnt >= -1);
1555
1556 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1559
1560 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next)
1563 {
1564 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 }
1568
1569 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt);
1571
1572#if EV_PERIODIC_ENABLE
1573 assert (periodicmax >= periodiccnt);
1574 verify_heap (EV_A_ periodics, periodiccnt);
1575#endif
1576
1577 for (i = NUMPRI; i--; )
1578 {
1579 assert (pendingmax [i] >= pendingcnt [i]);
1580#if EV_IDLE_ENABLE
1581 assert (idleall >= 0);
1582 assert (idlemax [i] >= idlecnt [i]);
1583 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1584#endif
1585 }
1586
1587#if EV_FORK_ENABLE
1588 assert (forkmax >= forkcnt);
1589 array_verify (EV_A_ (W *)forks, forkcnt);
1590#endif
1591
1592#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif
1596
1597 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt);
1599
1600 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt);
1602
1603# if 0
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1088#endif 1606# endif
1607#endif
1608}
1609
1610#endif /* multiplicity */
1089 1611
1090#if EV_MULTIPLICITY 1612#if EV_MULTIPLICITY
1091struct ev_loop * 1613struct ev_loop *
1092ev_default_loop_init (unsigned int flags) 1614ev_default_loop_init (unsigned int flags)
1093#else 1615#else
1094int 1616int
1095ev_default_loop (unsigned int flags) 1617ev_default_loop (unsigned int flags)
1096#endif 1618#endif
1097{ 1619{
1098 if (sigpipe [0] == sigpipe [1])
1099 if (pipe (sigpipe))
1100 return 0;
1101
1102 if (!ev_default_loop_ptr) 1620 if (!ev_default_loop_ptr)
1103 { 1621 {
1104#if EV_MULTIPLICITY 1622#if EV_MULTIPLICITY
1105 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1106#else 1624#else
… …
1109 1627
1110 loop_init (EV_A_ flags); 1628 loop_init (EV_A_ flags);
1111 1629
1112 if (ev_backend (EV_A)) 1630 if (ev_backend (EV_A))
1113 { 1631 {
1114 siginit (EV_A);
1115
1116#ifndef _WIN32 1632#ifndef _WIN32
1117 ev_signal_init (&childev, childcb, SIGCHLD); 1633 ev_signal_init (&childev, childcb, SIGCHLD);
1118 ev_set_priority (&childev, EV_MAXPRI); 1634 ev_set_priority (&childev, EV_MAXPRI);
1119 ev_signal_start (EV_A_ &childev); 1635 ev_signal_start (EV_A_ &childev);
1120 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1636 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1137#ifndef _WIN32 1653#ifndef _WIN32
1138 ev_ref (EV_A); /* child watcher */ 1654 ev_ref (EV_A); /* child watcher */
1139 ev_signal_stop (EV_A_ &childev); 1655 ev_signal_stop (EV_A_ &childev);
1140#endif 1656#endif
1141 1657
1142 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &sigev);
1144
1145 close (sigpipe [0]); sigpipe [0] = 0;
1146 close (sigpipe [1]); sigpipe [1] = 0;
1147
1148 loop_destroy (EV_A); 1658 loop_destroy (EV_A);
1149} 1659}
1150 1660
1151void 1661void
1152ev_default_fork (void) 1662ev_default_fork (void)
… …
1154#if EV_MULTIPLICITY 1664#if EV_MULTIPLICITY
1155 struct ev_loop *loop = ev_default_loop_ptr; 1665 struct ev_loop *loop = ev_default_loop_ptr;
1156#endif 1666#endif
1157 1667
1158 if (backend) 1668 if (backend)
1159 postfork = 1; 1669 postfork = 1; /* must be in line with ev_loop_fork */
1160} 1670}
1161 1671
1162/*****************************************************************************/ 1672/*****************************************************************************/
1163 1673
1164int inline_size 1674void
1165any_pending (EV_P) 1675ev_invoke (EV_P_ void *w, int revents)
1166{ 1676{
1167 int pri; 1677 EV_CB_INVOKE ((W)w, revents);
1168
1169 for (pri = NUMPRI; pri--; )
1170 if (pendingcnt [pri])
1171 return 1;
1172
1173 return 0;
1174} 1678}
1175 1679
1176void inline_speed 1680void inline_speed
1177call_pending (EV_P) 1681call_pending (EV_P)
1178{ 1682{
… …
1187 { 1691 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189 1693
1190 p->w->pending = 0; 1694 p->w->pending = 0;
1191 EV_CB_INVOKE (p->w, p->events); 1695 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK;
1192 } 1697 }
1193 } 1698 }
1194} 1699}
1195 1700
1701#if EV_IDLE_ENABLE
1702void inline_size
1703idle_reify (EV_P)
1704{
1705 if (expect_false (idleall))
1706 {
1707 int pri;
1708
1709 for (pri = NUMPRI; pri--; )
1710 {
1711 if (pendingcnt [pri])
1712 break;
1713
1714 if (idlecnt [pri])
1715 {
1716 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1717 break;
1718 }
1719 }
1720 }
1721}
1722#endif
1723
1196void inline_size 1724void inline_size
1197timers_reify (EV_P) 1725timers_reify (EV_P)
1198{ 1726{
1727 EV_FREQUENT_CHECK;
1728
1199 while (timercnt && ((WT)timers [0])->at <= mn_now) 1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1200 { 1730 {
1201 ev_timer *w = timers [0]; 1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1202 1732
1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ 1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1204 1734
1205 /* first reschedule or stop timer */ 1735 /* first reschedule or stop timer */
1206 if (w->repeat) 1736 if (w->repeat)
1207 { 1737 {
1738 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now;
1741
1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209 1743
1210 ((WT)w)->at += w->repeat; 1744 ANHE_at_cache (timers [HEAP0]);
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
1214 downheap ((WT *)timers, timercnt, 0); 1745 downheap (timers, timercnt, HEAP0);
1215 } 1746 }
1216 else 1747 else
1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218 1749
1750 EV_FREQUENT_CHECK;
1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1220 } 1752 }
1221} 1753}
1222 1754
1223#if EV_PERIODIC_ENABLE 1755#if EV_PERIODIC_ENABLE
1224void inline_size 1756void inline_size
1225periodics_reify (EV_P) 1757periodics_reify (EV_P)
1226{ 1758{
1759 EV_FREQUENT_CHECK;
1760
1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1228 { 1762 {
1229 ev_periodic *w = periodics [0]; 1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1230 1764
1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1232 1766
1233 /* first reschedule or stop timer */ 1767 /* first reschedule or stop timer */
1234 if (w->reschedule_cb) 1768 if (w->reschedule_cb)
1235 { 1769 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771
1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773
1774 ANHE_at_cache (periodics [HEAP0]);
1238 downheap ((WT *)periodics, periodiccnt, 0); 1775 downheap (periodics, periodiccnt, HEAP0);
1239 } 1776 }
1240 else if (w->interval) 1777 else if (w->interval)
1241 { 1778 {
1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1244 downheap ((WT *)periodics, periodiccnt, 0); 1794 downheap (periodics, periodiccnt, HEAP0);
1245 } 1795 }
1246 else 1796 else
1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248 1798
1799 EV_FREQUENT_CHECK;
1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1250 } 1801 }
1251} 1802}
1252 1803
1253static void noinline 1804static void noinline
1254periodics_reschedule (EV_P) 1805periodics_reschedule (EV_P)
1255{ 1806{
1256 int i; 1807 int i;
1257 1808
1258 /* adjust periodics after time jump */ 1809 /* adjust periodics after time jump */
1259 for (i = 0; i < periodiccnt; ++i) 1810 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1260 { 1811 {
1261 ev_periodic *w = periodics [i]; 1812 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1262 1813
1263 if (w->reschedule_cb) 1814 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1265 else if (w->interval) 1816 else if (w->interval)
1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1817 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1818
1819 ANHE_at_cache (periodics [i]);
1820 }
1821
1822 reheap (periodics, periodiccnt);
1823}
1824#endif
1825
1826void inline_speed
1827time_update (EV_P_ ev_tstamp max_block)
1828{
1829 int i;
1830
1831#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic))
1267 } 1833 {
1834 ev_tstamp odiff = rtmn_diff;
1268 1835
1269 /* now rebuild the heap */
1270 for (i = periodiccnt >> 1; i--; )
1271 downheap ((WT *)periodics, periodiccnt, i);
1272}
1273#endif
1274
1275int inline_size
1276time_update_monotonic (EV_P)
1277{
1278 mn_now = get_clock (); 1836 mn_now = get_clock ();
1279 1837
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1839 /* interpolate in the meantime */
1280 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1840 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1281 { 1841 {
1282 ev_rt_now = rtmn_diff + mn_now; 1842 ev_rt_now = rtmn_diff + mn_now;
1283 return 0; 1843 return;
1284 } 1844 }
1285 else 1845
1286 {
1287 now_floor = mn_now; 1846 now_floor = mn_now;
1288 ev_rt_now = ev_time (); 1847 ev_rt_now = ev_time ();
1289 return 1;
1290 }
1291}
1292 1848
1293void inline_size 1849 /* loop a few times, before making important decisions.
1294time_update (EV_P) 1850 * on the choice of "4": one iteration isn't enough,
1295{ 1851 * in case we get preempted during the calls to
1296 int i; 1852 * ev_time and get_clock. a second call is almost guaranteed
1297 1853 * to succeed in that case, though. and looping a few more times
1298#if EV_USE_MONOTONIC 1854 * doesn't hurt either as we only do this on time-jumps or
1299 if (expect_true (have_monotonic)) 1855 * in the unlikely event of having been preempted here.
1300 { 1856 */
1301 if (time_update_monotonic (EV_A)) 1857 for (i = 4; --i; )
1302 { 1858 {
1303 ev_tstamp odiff = rtmn_diff;
1304
1305 /* loop a few times, before making important decisions.
1306 * on the choice of "4": one iteration isn't enough,
1307 * in case we get preempted during the calls to
1308 * ev_time and get_clock. a second call is almost guaranteed
1309 * to succeed in that case, though. and looping a few more times
1310 * doesn't hurt either as we only do this on time-jumps or
1311 * in the unlikely event of having been preempted here.
1312 */
1313 for (i = 4; --i; )
1314 {
1315 rtmn_diff = ev_rt_now - mn_now; 1859 rtmn_diff = ev_rt_now - mn_now;
1316 1860
1317 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1861 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1318 return; /* all is well */ 1862 return; /* all is well */
1319 1863
1320 ev_rt_now = ev_time (); 1864 ev_rt_now = ev_time ();
1321 mn_now = get_clock (); 1865 mn_now = get_clock ();
1322 now_floor = mn_now; 1866 now_floor = mn_now;
1323 } 1867 }
1324 1868
1325# if EV_PERIODIC_ENABLE 1869# if EV_PERIODIC_ENABLE
1326 periodics_reschedule (EV_A); 1870 periodics_reschedule (EV_A);
1327# endif 1871# endif
1328 /* no timer adjustment, as the monotonic clock doesn't jump */ 1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1330 }
1331 } 1874 }
1332 else 1875 else
1333#endif 1876#endif
1334 { 1877 {
1335 ev_rt_now = ev_time (); 1878 ev_rt_now = ev_time ();
1336 1879
1337 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1338 { 1881 {
1339#if EV_PERIODIC_ENABLE 1882#if EV_PERIODIC_ENABLE
1340 periodics_reschedule (EV_A); 1883 periodics_reschedule (EV_A);
1341#endif 1884#endif
1342
1343 /* adjust timers. this is easy, as the offset is the same for all of them */ 1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1344 for (i = 0; i < timercnt; ++i) 1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1345 ((WT)timers [i])->at += ev_rt_now - mn_now; 1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1346 } 1892 }
1347 1893
1348 mn_now = ev_rt_now; 1894 mn_now = ev_rt_now;
1349 } 1895 }
1350} 1896}
… …
1364static int loop_done; 1910static int loop_done;
1365 1911
1366void 1912void
1367ev_loop (EV_P_ int flags) 1913ev_loop (EV_P_ int flags)
1368{ 1914{
1369 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1915 loop_done = EVUNLOOP_CANCEL;
1370 ? EVUNLOOP_ONE
1371 : EVUNLOOP_CANCEL;
1372 1916
1373 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1374 1918
1375 do 1919 do
1376 { 1920 {
1921#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A);
1923#endif
1924
1377#ifndef _WIN32 1925#ifndef _WIN32
1378 if (expect_false (curpid)) /* penalise the forking check even more */ 1926 if (expect_false (curpid)) /* penalise the forking check even more */
1379 if (expect_false (getpid () != curpid)) 1927 if (expect_false (getpid () != curpid))
1380 { 1928 {
1381 curpid = getpid (); 1929 curpid = getpid ();
… …
1391 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392 call_pending (EV_A); 1940 call_pending (EV_A);
1393 } 1941 }
1394#endif 1942#endif
1395 1943
1396 /* queue check watchers (and execute them) */ 1944 /* queue prepare watchers (and execute them) */
1397 if (expect_false (preparecnt)) 1945 if (expect_false (preparecnt))
1398 { 1946 {
1399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1400 call_pending (EV_A); 1948 call_pending (EV_A);
1401 } 1949 }
… …
1410 /* update fd-related kernel structures */ 1958 /* update fd-related kernel structures */
1411 fd_reify (EV_A); 1959 fd_reify (EV_A);
1412 1960
1413 /* calculate blocking time */ 1961 /* calculate blocking time */
1414 { 1962 {
1415 ev_tstamp block; 1963 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.;
1416 1965
1417 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt)) 1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1418 block = 0.; /* do not block at all */
1419 else
1420 { 1967 {
1421 /* update time to cancel out callback processing overhead */ 1968 /* update time to cancel out callback processing overhead */
1422#if EV_USE_MONOTONIC
1423 if (expect_true (have_monotonic))
1424 time_update_monotonic (EV_A); 1969 time_update (EV_A_ 1e100);
1425 else
1426#endif
1427 {
1428 ev_rt_now = ev_time ();
1429 mn_now = ev_rt_now;
1430 }
1431 1970
1432 block = MAX_BLOCKTIME; 1971 waittime = MAX_BLOCKTIME;
1433 1972
1434 if (timercnt) 1973 if (timercnt)
1435 { 1974 {
1436 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1437 if (block > to) block = to; 1976 if (waittime > to) waittime = to;
1438 } 1977 }
1439 1978
1440#if EV_PERIODIC_ENABLE 1979#if EV_PERIODIC_ENABLE
1441 if (periodiccnt) 1980 if (periodiccnt)
1442 { 1981 {
1443 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1444 if (block > to) block = to; 1983 if (waittime > to) waittime = to;
1445 } 1984 }
1446#endif 1985#endif
1447 1986
1448 if (expect_false (block < 0.)) block = 0.; 1987 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime;
1989
1990 sleeptime = waittime - backend_fudge;
1991
1992 if (expect_true (sleeptime > io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 {
1997 ev_sleep (sleeptime);
1998 waittime -= sleeptime;
1999 }
1449 } 2000 }
1450 2001
1451 ++loop_count; 2002 ++loop_count;
1452 backend_poll (EV_A_ block); 2003 backend_poll (EV_A_ waittime);
2004
2005 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime);
1453 } 2007 }
1454
1455 /* update ev_rt_now, do magic */
1456 time_update (EV_A);
1457 2008
1458 /* queue pending timers and reschedule them */ 2009 /* queue pending timers and reschedule them */
1459 timers_reify (EV_A); /* relative timers called last */ 2010 timers_reify (EV_A); /* relative timers called last */
1460#if EV_PERIODIC_ENABLE 2011#if EV_PERIODIC_ENABLE
1461 periodics_reify (EV_A); /* absolute timers called first */ 2012 periodics_reify (EV_A); /* absolute timers called first */
1462#endif 2013#endif
1463 2014
2015#if EV_IDLE_ENABLE
1464 /* queue idle watchers unless other events are pending */ 2016 /* queue idle watchers unless other events are pending */
1465 if (idlecnt && !any_pending (EV_A)) 2017 idle_reify (EV_A);
1466 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2018#endif
1467 2019
1468 /* queue check watchers, to be executed first */ 2020 /* queue check watchers, to be executed first */
1469 if (expect_false (checkcnt)) 2021 if (expect_false (checkcnt))
1470 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1471 2023
1472 call_pending (EV_A); 2024 call_pending (EV_A);
1473
1474 } 2025 }
1475 while (expect_true (activecnt && !loop_done)); 2026 while (expect_true (
2027 activecnt
2028 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 ));
1476 2031
1477 if (loop_done == EVUNLOOP_ONE) 2032 if (loop_done == EVUNLOOP_ONE)
1478 loop_done = EVUNLOOP_CANCEL; 2033 loop_done = EVUNLOOP_CANCEL;
1479} 2034}
1480 2035
… …
1507 head = &(*head)->next; 2062 head = &(*head)->next;
1508 } 2063 }
1509} 2064}
1510 2065
1511void inline_speed 2066void inline_speed
1512ev_clear_pending (EV_P_ W w) 2067clear_pending (EV_P_ W w)
1513{ 2068{
1514 if (w->pending) 2069 if (w->pending)
1515 { 2070 {
1516 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2071 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1517 w->pending = 0; 2072 w->pending = 0;
1518 } 2073 }
1519} 2074}
1520 2075
2076int
2077ev_clear_pending (EV_P_ void *w)
2078{
2079 W w_ = (W)w;
2080 int pending = w_->pending;
2081
2082 if (expect_true (pending))
2083 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2085 w_->pending = 0;
2086 p->w = 0;
2087 return p->events;
2088 }
2089 else
2090 return 0;
2091}
2092
2093void inline_size
2094pri_adjust (EV_P_ W w)
2095{
2096 int pri = w->priority;
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri;
2100}
2101
1521void inline_speed 2102void inline_speed
1522ev_start (EV_P_ W w, int active) 2103ev_start (EV_P_ W w, int active)
1523{ 2104{
1524 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2105 pri_adjust (EV_A_ w);
1525 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1526
1527 w->active = active; 2106 w->active = active;
1528 ev_ref (EV_A); 2107 ev_ref (EV_A);
1529} 2108}
1530 2109
1531void inline_size 2110void inline_size
… …
1535 w->active = 0; 2114 w->active = 0;
1536} 2115}
1537 2116
1538/*****************************************************************************/ 2117/*****************************************************************************/
1539 2118
1540void 2119void noinline
1541ev_io_start (EV_P_ ev_io *w) 2120ev_io_start (EV_P_ ev_io *w)
1542{ 2121{
1543 int fd = w->fd; 2122 int fd = w->fd;
1544 2123
1545 if (expect_false (ev_is_active (w))) 2124 if (expect_false (ev_is_active (w)))
1546 return; 2125 return;
1547 2126
1548 assert (("ev_io_start called with negative fd", fd >= 0)); 2127 assert (("ev_io_start called with negative fd", fd >= 0));
1549 2128
2129 EV_FREQUENT_CHECK;
2130
1550 ev_start (EV_A_ (W)w, 1); 2131 ev_start (EV_A_ (W)w, 1);
1551 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1552 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2133 wlist_add (&anfds[fd].head, (WL)w);
1553 2134
1554 fd_change (EV_A_ fd); 2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1555} 2136 w->events &= ~EV_IOFDSET;
1556 2137
1557void 2138 EV_FREQUENT_CHECK;
2139}
2140
2141void noinline
1558ev_io_stop (EV_P_ ev_io *w) 2142ev_io_stop (EV_P_ ev_io *w)
1559{ 2143{
1560 ev_clear_pending (EV_A_ (W)w); 2144 clear_pending (EV_A_ (W)w);
1561 if (expect_false (!ev_is_active (w))) 2145 if (expect_false (!ev_is_active (w)))
1562 return; 2146 return;
1563 2147
1564 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1565 2149
2150 EV_FREQUENT_CHECK;
2151
1566 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2152 wlist_del (&anfds[w->fd].head, (WL)w);
1567 ev_stop (EV_A_ (W)w); 2153 ev_stop (EV_A_ (W)w);
1568 2154
1569 fd_change (EV_A_ w->fd); 2155 fd_change (EV_A_ w->fd, 1);
1570}
1571 2156
1572void 2157 EV_FREQUENT_CHECK;
2158}
2159
2160void noinline
1573ev_timer_start (EV_P_ ev_timer *w) 2161ev_timer_start (EV_P_ ev_timer *w)
1574{ 2162{
1575 if (expect_false (ev_is_active (w))) 2163 if (expect_false (ev_is_active (w)))
1576 return; 2164 return;
1577 2165
1578 ((WT)w)->at += mn_now; 2166 ev_at (w) += mn_now;
1579 2167
1580 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1581 2169
2170 EV_FREQUENT_CHECK;
2171
2172 ++timercnt;
1582 ev_start (EV_A_ (W)w, ++timercnt); 2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1583 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2174 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1584 timers [timercnt - 1] = w; 2175 ANHE_w (timers [ev_active (w)]) = (WT)w;
1585 upheap ((WT *)timers, timercnt - 1); 2176 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w));
1586 2178
2179 EV_FREQUENT_CHECK;
2180
1587 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1588} 2182}
1589 2183
1590void 2184void noinline
1591ev_timer_stop (EV_P_ ev_timer *w) 2185ev_timer_stop (EV_P_ ev_timer *w)
1592{ 2186{
1593 ev_clear_pending (EV_A_ (W)w); 2187 clear_pending (EV_A_ (W)w);
1594 if (expect_false (!ev_is_active (w))) 2188 if (expect_false (!ev_is_active (w)))
1595 return; 2189 return;
1596 2190
1597 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2191 EV_FREQUENT_CHECK;
1598 2192
1599 { 2193 {
1600 int active = ((W)w)->active; 2194 int active = ev_active (w);
1601 2195
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197
2198 --timercnt;
2199
1602 if (expect_true (--active < --timercnt)) 2200 if (expect_true (active < timercnt + HEAP0))
1603 { 2201 {
1604 timers [active] = timers [timercnt]; 2202 timers [active] = timers [timercnt + HEAP0];
1605 adjustheap ((WT *)timers, timercnt, active); 2203 adjustheap (timers, timercnt, active);
1606 } 2204 }
1607 } 2205 }
1608 2206
1609 ((WT)w)->at -= mn_now; 2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now;
1610 2210
1611 ev_stop (EV_A_ (W)w); 2211 ev_stop (EV_A_ (W)w);
1612} 2212}
1613 2213
1614void 2214void noinline
1615ev_timer_again (EV_P_ ev_timer *w) 2215ev_timer_again (EV_P_ ev_timer *w)
1616{ 2216{
2217 EV_FREQUENT_CHECK;
2218
1617 if (ev_is_active (w)) 2219 if (ev_is_active (w))
1618 { 2220 {
1619 if (w->repeat) 2221 if (w->repeat)
1620 { 2222 {
1621 ((WT)w)->at = mn_now + w->repeat; 2223 ev_at (w) = mn_now + w->repeat;
2224 ANHE_at_cache (timers [ev_active (w)]);
1622 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2225 adjustheap (timers, timercnt, ev_active (w));
1623 } 2226 }
1624 else 2227 else
1625 ev_timer_stop (EV_A_ w); 2228 ev_timer_stop (EV_A_ w);
1626 } 2229 }
1627 else if (w->repeat) 2230 else if (w->repeat)
1628 { 2231 {
1629 w->at = w->repeat; 2232 ev_at (w) = w->repeat;
1630 ev_timer_start (EV_A_ w); 2233 ev_timer_start (EV_A_ w);
1631 } 2234 }
2235
2236 EV_FREQUENT_CHECK;
1632} 2237}
1633 2238
1634#if EV_PERIODIC_ENABLE 2239#if EV_PERIODIC_ENABLE
1635void 2240void noinline
1636ev_periodic_start (EV_P_ ev_periodic *w) 2241ev_periodic_start (EV_P_ ev_periodic *w)
1637{ 2242{
1638 if (expect_false (ev_is_active (w))) 2243 if (expect_false (ev_is_active (w)))
1639 return; 2244 return;
1640 2245
1641 if (w->reschedule_cb) 2246 if (w->reschedule_cb)
1642 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643 else if (w->interval) 2248 else if (w->interval)
1644 { 2249 {
1645 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1646 /* this formula differs from the one in periodic_reify because we do not always round up */ 2251 /* this formula differs from the one in periodic_reify because we do not always round up */
1647 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1648 } 2253 }
2254 else
2255 ev_at (w) = w->offset;
1649 2256
2257 EV_FREQUENT_CHECK;
2258
2259 ++periodiccnt;
1650 ev_start (EV_A_ (W)w, ++periodiccnt); 2260 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1651 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2261 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1652 periodics [periodiccnt - 1] = w; 2262 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1653 upheap ((WT *)periodics, periodiccnt - 1); 2263 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w));
1654 2265
2266 EV_FREQUENT_CHECK;
2267
1655 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1656} 2269}
1657 2270
1658void 2271void noinline
1659ev_periodic_stop (EV_P_ ev_periodic *w) 2272ev_periodic_stop (EV_P_ ev_periodic *w)
1660{ 2273{
1661 ev_clear_pending (EV_A_ (W)w); 2274 clear_pending (EV_A_ (W)w);
1662 if (expect_false (!ev_is_active (w))) 2275 if (expect_false (!ev_is_active (w)))
1663 return; 2276 return;
1664 2277
1665 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2278 EV_FREQUENT_CHECK;
1666 2279
1667 { 2280 {
1668 int active = ((W)w)->active; 2281 int active = ev_active (w);
1669 2282
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284
2285 --periodiccnt;
2286
1670 if (expect_true (--active < --periodiccnt)) 2287 if (expect_true (active < periodiccnt + HEAP0))
1671 { 2288 {
1672 periodics [active] = periodics [periodiccnt]; 2289 periodics [active] = periodics [periodiccnt + HEAP0];
1673 adjustheap ((WT *)periodics, periodiccnt, active); 2290 adjustheap (periodics, periodiccnt, active);
1674 } 2291 }
1675 } 2292 }
1676 2293
2294 EV_FREQUENT_CHECK;
2295
1677 ev_stop (EV_A_ (W)w); 2296 ev_stop (EV_A_ (W)w);
1678} 2297}
1679 2298
1680void 2299void noinline
1681ev_periodic_again (EV_P_ ev_periodic *w) 2300ev_periodic_again (EV_P_ ev_periodic *w)
1682{ 2301{
1683 /* TODO: use adjustheap and recalculation */ 2302 /* TODO: use adjustheap and recalculation */
1684 ev_periodic_stop (EV_A_ w); 2303 ev_periodic_stop (EV_A_ w);
1685 ev_periodic_start (EV_A_ w); 2304 ev_periodic_start (EV_A_ w);
… …
1688 2307
1689#ifndef SA_RESTART 2308#ifndef SA_RESTART
1690# define SA_RESTART 0 2309# define SA_RESTART 0
1691#endif 2310#endif
1692 2311
1693void 2312void noinline
1694ev_signal_start (EV_P_ ev_signal *w) 2313ev_signal_start (EV_P_ ev_signal *w)
1695{ 2314{
1696#if EV_MULTIPLICITY 2315#if EV_MULTIPLICITY
1697 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1698#endif 2317#endif
1699 if (expect_false (ev_is_active (w))) 2318 if (expect_false (ev_is_active (w)))
1700 return; 2319 return;
1701 2320
1702 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1703 2322
2323 evpipe_init (EV_A);
2324
2325 EV_FREQUENT_CHECK;
2326
2327 {
2328#ifndef _WIN32
2329 sigset_t full, prev;
2330 sigfillset (&full);
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2335
2336#ifndef _WIN32
2337 sigprocmask (SIG_SETMASK, &prev, 0);
2338#endif
2339 }
2340
1704 ev_start (EV_A_ (W)w, 1); 2341 ev_start (EV_A_ (W)w, 1);
1705 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1706 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2342 wlist_add (&signals [w->signum - 1].head, (WL)w);
1707 2343
1708 if (!((WL)w)->next) 2344 if (!((WL)w)->next)
1709 { 2345 {
1710#if _WIN32 2346#if _WIN32
1711 signal (w->signum, sighandler); 2347 signal (w->signum, ev_sighandler);
1712#else 2348#else
1713 struct sigaction sa; 2349 struct sigaction sa;
1714 sa.sa_handler = sighandler; 2350 sa.sa_handler = ev_sighandler;
1715 sigfillset (&sa.sa_mask); 2351 sigfillset (&sa.sa_mask);
1716 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1717 sigaction (w->signum, &sa, 0); 2353 sigaction (w->signum, &sa, 0);
1718#endif 2354#endif
1719 } 2355 }
1720}
1721 2356
1722void 2357 EV_FREQUENT_CHECK;
2358}
2359
2360void noinline
1723ev_signal_stop (EV_P_ ev_signal *w) 2361ev_signal_stop (EV_P_ ev_signal *w)
1724{ 2362{
1725 ev_clear_pending (EV_A_ (W)w); 2363 clear_pending (EV_A_ (W)w);
1726 if (expect_false (!ev_is_active (w))) 2364 if (expect_false (!ev_is_active (w)))
1727 return; 2365 return;
1728 2366
2367 EV_FREQUENT_CHECK;
2368
1729 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2369 wlist_del (&signals [w->signum - 1].head, (WL)w);
1730 ev_stop (EV_A_ (W)w); 2370 ev_stop (EV_A_ (W)w);
1731 2371
1732 if (!signals [w->signum - 1].head) 2372 if (!signals [w->signum - 1].head)
1733 signal (w->signum, SIG_DFL); 2373 signal (w->signum, SIG_DFL);
2374
2375 EV_FREQUENT_CHECK;
1734} 2376}
1735 2377
1736void 2378void
1737ev_child_start (EV_P_ ev_child *w) 2379ev_child_start (EV_P_ ev_child *w)
1738{ 2380{
… …
1740 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1741#endif 2383#endif
1742 if (expect_false (ev_is_active (w))) 2384 if (expect_false (ev_is_active (w)))
1743 return; 2385 return;
1744 2386
2387 EV_FREQUENT_CHECK;
2388
1745 ev_start (EV_A_ (W)w, 1); 2389 ev_start (EV_A_ (W)w, 1);
1746 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2391
2392 EV_FREQUENT_CHECK;
1747} 2393}
1748 2394
1749void 2395void
1750ev_child_stop (EV_P_ ev_child *w) 2396ev_child_stop (EV_P_ ev_child *w)
1751{ 2397{
1752 ev_clear_pending (EV_A_ (W)w); 2398 clear_pending (EV_A_ (W)w);
1753 if (expect_false (!ev_is_active (w))) 2399 if (expect_false (!ev_is_active (w)))
1754 return; 2400 return;
1755 2401
2402 EV_FREQUENT_CHECK;
2403
1756 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757 ev_stop (EV_A_ (W)w); 2405 ev_stop (EV_A_ (W)w);
2406
2407 EV_FREQUENT_CHECK;
1758} 2408}
1759 2409
1760#if EV_STAT_ENABLE 2410#if EV_STAT_ENABLE
1761 2411
1762# ifdef _WIN32 2412# ifdef _WIN32
… …
1780 if (w->wd < 0) 2430 if (w->wd < 0)
1781 { 2431 {
1782 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1783 2433
1784 /* monitor some parent directory for speedup hints */ 2434 /* monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */
2436 /* but an efficiency issue only */
1785 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1786 { 2438 {
1787 char path [4096]; 2439 char path [4096];
1788 strcpy (path, w->path); 2440 strcpy (path, w->path);
1789 2441
… …
1988 else 2640 else
1989#endif 2641#endif
1990 ev_timer_start (EV_A_ &w->timer); 2642 ev_timer_start (EV_A_ &w->timer);
1991 2643
1992 ev_start (EV_A_ (W)w, 1); 2644 ev_start (EV_A_ (W)w, 1);
2645
2646 EV_FREQUENT_CHECK;
1993} 2647}
1994 2648
1995void 2649void
1996ev_stat_stop (EV_P_ ev_stat *w) 2650ev_stat_stop (EV_P_ ev_stat *w)
1997{ 2651{
1998 ev_clear_pending (EV_A_ (W)w); 2652 clear_pending (EV_A_ (W)w);
1999 if (expect_false (!ev_is_active (w))) 2653 if (expect_false (!ev_is_active (w)))
2000 return; 2654 return;
2001 2655
2656 EV_FREQUENT_CHECK;
2657
2002#if EV_USE_INOTIFY 2658#if EV_USE_INOTIFY
2003 infy_del (EV_A_ w); 2659 infy_del (EV_A_ w);
2004#endif 2660#endif
2005 ev_timer_stop (EV_A_ &w->timer); 2661 ev_timer_stop (EV_A_ &w->timer);
2006 2662
2007 ev_stop (EV_A_ (W)w); 2663 ev_stop (EV_A_ (W)w);
2008}
2009#endif
2010 2664
2665 EV_FREQUENT_CHECK;
2666}
2667#endif
2668
2669#if EV_IDLE_ENABLE
2011void 2670void
2012ev_idle_start (EV_P_ ev_idle *w) 2671ev_idle_start (EV_P_ ev_idle *w)
2013{ 2672{
2014 if (expect_false (ev_is_active (w))) 2673 if (expect_false (ev_is_active (w)))
2015 return; 2674 return;
2016 2675
2676 pri_adjust (EV_A_ (W)w);
2677
2678 EV_FREQUENT_CHECK;
2679
2680 {
2681 int active = ++idlecnt [ABSPRI (w)];
2682
2683 ++idleall;
2017 ev_start (EV_A_ (W)w, ++idlecnt); 2684 ev_start (EV_A_ (W)w, active);
2685
2018 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2686 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2019 idles [idlecnt - 1] = w; 2687 idles [ABSPRI (w)][active - 1] = w;
2688 }
2689
2690 EV_FREQUENT_CHECK;
2020} 2691}
2021 2692
2022void 2693void
2023ev_idle_stop (EV_P_ ev_idle *w) 2694ev_idle_stop (EV_P_ ev_idle *w)
2024{ 2695{
2025 ev_clear_pending (EV_A_ (W)w); 2696 clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w))) 2697 if (expect_false (!ev_is_active (w)))
2027 return; 2698 return;
2028 2699
2700 EV_FREQUENT_CHECK;
2701
2029 { 2702 {
2030 int active = ((W)w)->active; 2703 int active = ev_active (w);
2031 idles [active - 1] = idles [--idlecnt]; 2704
2032 ((W)idles [active - 1])->active = active; 2705 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2706 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2707
2708 ev_stop (EV_A_ (W)w);
2709 --idleall;
2033 } 2710 }
2034 2711
2035 ev_stop (EV_A_ (W)w); 2712 EV_FREQUENT_CHECK;
2036} 2713}
2714#endif
2037 2715
2038void 2716void
2039ev_prepare_start (EV_P_ ev_prepare *w) 2717ev_prepare_start (EV_P_ ev_prepare *w)
2040{ 2718{
2041 if (expect_false (ev_is_active (w))) 2719 if (expect_false (ev_is_active (w)))
2042 return; 2720 return;
2721
2722 EV_FREQUENT_CHECK;
2043 2723
2044 ev_start (EV_A_ (W)w, ++preparecnt); 2724 ev_start (EV_A_ (W)w, ++preparecnt);
2045 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2725 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2046 prepares [preparecnt - 1] = w; 2726 prepares [preparecnt - 1] = w;
2727
2728 EV_FREQUENT_CHECK;
2047} 2729}
2048 2730
2049void 2731void
2050ev_prepare_stop (EV_P_ ev_prepare *w) 2732ev_prepare_stop (EV_P_ ev_prepare *w)
2051{ 2733{
2052 ev_clear_pending (EV_A_ (W)w); 2734 clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w))) 2735 if (expect_false (!ev_is_active (w)))
2054 return; 2736 return;
2055 2737
2738 EV_FREQUENT_CHECK;
2739
2056 { 2740 {
2057 int active = ((W)w)->active; 2741 int active = ev_active (w);
2742
2058 prepares [active - 1] = prepares [--preparecnt]; 2743 prepares [active - 1] = prepares [--preparecnt];
2059 ((W)prepares [active - 1])->active = active; 2744 ev_active (prepares [active - 1]) = active;
2060 } 2745 }
2061 2746
2062 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2063} 2750}
2064 2751
2065void 2752void
2066ev_check_start (EV_P_ ev_check *w) 2753ev_check_start (EV_P_ ev_check *w)
2067{ 2754{
2068 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
2069 return; 2756 return;
2757
2758 EV_FREQUENT_CHECK;
2070 2759
2071 ev_start (EV_A_ (W)w, ++checkcnt); 2760 ev_start (EV_A_ (W)w, ++checkcnt);
2072 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2761 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2073 checks [checkcnt - 1] = w; 2762 checks [checkcnt - 1] = w;
2763
2764 EV_FREQUENT_CHECK;
2074} 2765}
2075 2766
2076void 2767void
2077ev_check_stop (EV_P_ ev_check *w) 2768ev_check_stop (EV_P_ ev_check *w)
2078{ 2769{
2079 ev_clear_pending (EV_A_ (W)w); 2770 clear_pending (EV_A_ (W)w);
2080 if (expect_false (!ev_is_active (w))) 2771 if (expect_false (!ev_is_active (w)))
2081 return; 2772 return;
2082 2773
2774 EV_FREQUENT_CHECK;
2775
2083 { 2776 {
2084 int active = ((W)w)->active; 2777 int active = ev_active (w);
2778
2085 checks [active - 1] = checks [--checkcnt]; 2779 checks [active - 1] = checks [--checkcnt];
2086 ((W)checks [active - 1])->active = active; 2780 ev_active (checks [active - 1]) = active;
2087 } 2781 }
2088 2782
2089 ev_stop (EV_A_ (W)w); 2783 ev_stop (EV_A_ (W)w);
2784
2785 EV_FREQUENT_CHECK;
2090} 2786}
2091 2787
2092#if EV_EMBED_ENABLE 2788#if EV_EMBED_ENABLE
2093void noinline 2789void noinline
2094ev_embed_sweep (EV_P_ ev_embed *w) 2790ev_embed_sweep (EV_P_ ev_embed *w)
2095{ 2791{
2096 ev_loop (w->loop, EVLOOP_NONBLOCK); 2792 ev_loop (w->other, EVLOOP_NONBLOCK);
2097} 2793}
2098 2794
2099static void 2795static void
2100embed_cb (EV_P_ ev_io *io, int revents) 2796embed_io_cb (EV_P_ ev_io *io, int revents)
2101{ 2797{
2102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2798 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2103 2799
2104 if (ev_cb (w)) 2800 if (ev_cb (w))
2105 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2801 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106 else 2802 else
2107 ev_embed_sweep (loop, w); 2803 ev_loop (w->other, EVLOOP_NONBLOCK);
2108} 2804}
2805
2806static void
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810
2811 {
2812 struct ev_loop *loop = w->other;
2813
2814 while (fdchangecnt)
2815 {
2816 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 }
2819 }
2820}
2821
2822#if 0
2823static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{
2826 ev_idle_stop (EV_A_ idle);
2827}
2828#endif
2109 2829
2110void 2830void
2111ev_embed_start (EV_P_ ev_embed *w) 2831ev_embed_start (EV_P_ ev_embed *w)
2112{ 2832{
2113 if (expect_false (ev_is_active (w))) 2833 if (expect_false (ev_is_active (w)))
2114 return; 2834 return;
2115 2835
2116 { 2836 {
2117 struct ev_loop *loop = w->loop; 2837 struct ev_loop *loop = w->other;
2118 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2120 } 2840 }
2841
2842 EV_FREQUENT_CHECK;
2121 2843
2122 ev_set_priority (&w->io, ev_priority (w)); 2844 ev_set_priority (&w->io, ev_priority (w));
2123 ev_io_start (EV_A_ &w->io); 2845 ev_io_start (EV_A_ &w->io);
2124 2846
2847 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare);
2850
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852
2125 ev_start (EV_A_ (W)w, 1); 2853 ev_start (EV_A_ (W)w, 1);
2854
2855 EV_FREQUENT_CHECK;
2126} 2856}
2127 2857
2128void 2858void
2129ev_embed_stop (EV_P_ ev_embed *w) 2859ev_embed_stop (EV_P_ ev_embed *w)
2130{ 2860{
2131 ev_clear_pending (EV_A_ (W)w); 2861 clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w))) 2862 if (expect_false (!ev_is_active (w)))
2133 return; 2863 return;
2134 2864
2865 EV_FREQUENT_CHECK;
2866
2135 ev_io_stop (EV_A_ &w->io); 2867 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare);
2136 2869
2137 ev_stop (EV_A_ (W)w); 2870 ev_stop (EV_A_ (W)w);
2871
2872 EV_FREQUENT_CHECK;
2138} 2873}
2139#endif 2874#endif
2140 2875
2141#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
2142void 2877void
2143ev_fork_start (EV_P_ ev_fork *w) 2878ev_fork_start (EV_P_ ev_fork *w)
2144{ 2879{
2145 if (expect_false (ev_is_active (w))) 2880 if (expect_false (ev_is_active (w)))
2146 return; 2881 return;
2882
2883 EV_FREQUENT_CHECK;
2147 2884
2148 ev_start (EV_A_ (W)w, ++forkcnt); 2885 ev_start (EV_A_ (W)w, ++forkcnt);
2149 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2886 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2150 forks [forkcnt - 1] = w; 2887 forks [forkcnt - 1] = w;
2888
2889 EV_FREQUENT_CHECK;
2151} 2890}
2152 2891
2153void 2892void
2154ev_fork_stop (EV_P_ ev_fork *w) 2893ev_fork_stop (EV_P_ ev_fork *w)
2155{ 2894{
2156 ev_clear_pending (EV_A_ (W)w); 2895 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w))) 2896 if (expect_false (!ev_is_active (w)))
2158 return; 2897 return;
2159 2898
2899 EV_FREQUENT_CHECK;
2900
2160 { 2901 {
2161 int active = ((W)w)->active; 2902 int active = ev_active (w);
2903
2162 forks [active - 1] = forks [--forkcnt]; 2904 forks [active - 1] = forks [--forkcnt];
2163 ((W)forks [active - 1])->active = active; 2905 ev_active (forks [active - 1]) = active;
2164 } 2906 }
2165 2907
2166 ev_stop (EV_A_ (W)w); 2908 ev_stop (EV_A_ (W)w);
2909
2910 EV_FREQUENT_CHECK;
2911}
2912#endif
2913
2914#if EV_ASYNC_ENABLE
2915void
2916ev_async_start (EV_P_ ev_async *w)
2917{
2918 if (expect_false (ev_is_active (w)))
2919 return;
2920
2921 evpipe_init (EV_A);
2922
2923 EV_FREQUENT_CHECK;
2924
2925 ev_start (EV_A_ (W)w, ++asynccnt);
2926 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2927 asyncs [asynccnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2930}
2931
2932void
2933ev_async_stop (EV_P_ ev_async *w)
2934{
2935 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w)))
2937 return;
2938
2939 EV_FREQUENT_CHECK;
2940
2941 {
2942 int active = ev_active (w);
2943
2944 asyncs [active - 1] = asyncs [--asynccnt];
2945 ev_active (asyncs [active - 1]) = active;
2946 }
2947
2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2951}
2952
2953void
2954ev_async_send (EV_P_ ev_async *w)
2955{
2956 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync);
2167} 2958}
2168#endif 2959#endif
2169 2960
2170/*****************************************************************************/ 2961/*****************************************************************************/
2171 2962
… …
2229 ev_timer_set (&once->to, timeout, 0.); 3020 ev_timer_set (&once->to, timeout, 0.);
2230 ev_timer_start (EV_A_ &once->to); 3021 ev_timer_start (EV_A_ &once->to);
2231 } 3022 }
2232} 3023}
2233 3024
3025#if EV_MULTIPLICITY
3026 #include "ev_wrap.h"
3027#endif
3028
2234#ifdef __cplusplus 3029#ifdef __cplusplus
2235} 3030}
2236#endif 3031#endif
2237 3032

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