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Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.281 by root, Mon Mar 16 21:15:06 2009 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) 2007,2008,2009 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"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# endif
63
43# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
46# endif 67# endif
47# ifndef EV_USE_REALTIME 68# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 69# define EV_USE_REALTIME 0
49# endif 70# endif
50# else 71# else
51# ifndef EV_USE_MONOTONIC 72# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 73# define EV_USE_MONOTONIC 0
53# endif 74# endif
54# ifndef EV_USE_REALTIME 75# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 76# define EV_USE_REALTIME 0
77# endif
78# endif
79
80# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1
83# else
84# define EV_USE_NANOSLEEP 0
56# endif 85# endif
57# endif 86# endif
58 87
59# ifndef EV_USE_SELECT 88# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 89# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 131# else
103# define EV_USE_INOTIFY 0 132# define EV_USE_INOTIFY 0
104# endif 133# endif
105# endif 134# endif
106 135
136# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif
142# endif
143
107#endif 144#endif
108 145
109#include <math.h> 146#include <math.h>
110#include <stdlib.h> 147#include <stdlib.h>
111#include <fcntl.h> 148#include <fcntl.h>
… …
129#ifndef _WIN32 166#ifndef _WIN32
130# include <sys/time.h> 167# include <sys/time.h>
131# include <sys/wait.h> 168# include <sys/wait.h>
132# include <unistd.h> 169# include <unistd.h>
133#else 170#else
171# include <io.h>
134# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 173# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
138# endif 176# endif
139#endif 177#endif
140 178
141/**/ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
142 188
143#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
144# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
145#endif 195#endif
146 196
147#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif
200
201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
205# define EV_USE_NANOSLEEP 0
206# endif
149#endif 207#endif
150 208
151#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
153#endif 211#endif
… …
159# define EV_USE_POLL 1 217# define EV_USE_POLL 1
160# endif 218# endif
161#endif 219#endif
162 220
163#ifndef EV_USE_EPOLL 221#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1
224# else
164# define EV_USE_EPOLL 0 225# define EV_USE_EPOLL 0
226# endif
165#endif 227#endif
166 228
167#ifndef EV_USE_KQUEUE 229#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 230# define EV_USE_KQUEUE 0
169#endif 231#endif
… …
171#ifndef EV_USE_PORT 233#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 234# define EV_USE_PORT 0
173#endif 235#endif
174 236
175#ifndef EV_USE_INOTIFY 237#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1
240# else
176# define EV_USE_INOTIFY 0 241# define EV_USE_INOTIFY 0
242# endif
177#endif 243#endif
178 244
179#ifndef EV_PID_HASHSIZE 245#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 246# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 247# define EV_PID_HASHSIZE 1
… …
190# else 256# else
191# define EV_INOTIFY_HASHSIZE 16 257# define EV_INOTIFY_HASHSIZE 16
192# endif 258# endif
193#endif 259#endif
194 260
195/**/ 261#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1
264# else
265# define EV_USE_EVENTFD 0
266# endif
267#endif
268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
279#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL
281#endif
282
283#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL
285#endif
286
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 288
197#ifndef CLOCK_MONOTONIC 289#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 290# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 291# define EV_USE_MONOTONIC 0
200#endif 292#endif
… …
202#ifndef CLOCK_REALTIME 294#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 295# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 296# define EV_USE_REALTIME 0
205#endif 297#endif
206 298
299#if !EV_STAT_ENABLE
300# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0
302#endif
303
304#if !EV_USE_NANOSLEEP
305# ifndef _WIN32
306# include <sys/select.h>
307# endif
308#endif
309
310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
319#endif
320
207#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 322# include <winsock.h>
209#endif 323#endif
210 324
211#if !EV_STAT_ENABLE 325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
212# define EV_USE_INOTIFY 0 331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h>
337# ifdef __cplusplus
338extern "C" {
213#endif 339# endif
214 340int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 341# ifdef __cplusplus
216# include <sys/inotify.h> 342}
343# endif
217#endif 344#endif
218 345
219/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
220 353
221/* 354/*
222 * This is used to avoid floating point rounding problems. 355 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics 356 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding 357 * to ensure progress, time-wise, even when rounding
… …
230 363
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234 367
235#if __GNUC__ >= 3 368#if __GNUC__ >= 4
236# define expect(expr,value) __builtin_expect ((expr),(value)) 369# define expect(expr,value) __builtin_expect ((expr),(value))
237# define noinline __attribute__ ((noinline)) 370# define noinline __attribute__ ((noinline))
238#else 371#else
239# define expect(expr,value) (expr) 372# define expect(expr,value) (expr)
240# define noinline 373# define noinline
241# if __STDC_VERSION__ < 199901L 374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242# define inline 375# define inline
243# endif 376# endif
244#endif 377#endif
245 378
246#define expect_false(expr) expect ((expr) != 0, 0) 379#define expect_false(expr) expect ((expr) != 0, 0)
… …
261 394
262typedef ev_watcher *W; 395typedef ev_watcher *W;
263typedef ev_watcher_list *WL; 396typedef ev_watcher_list *WL;
264typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
265 398
399#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at
401
402#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif
407
408#if EV_USE_MONOTONIC
266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif
267 411
268#ifdef _WIN32 412#ifdef _WIN32
269# include "ev_win32.c" 413# include "ev_win32.c"
270#endif 414#endif
271 415
… …
278{ 422{
279 syserr_cb = cb; 423 syserr_cb = cb;
280} 424}
281 425
282static void noinline 426static void noinline
283syserr (const char *msg) 427ev_syserr (const char *msg)
284{ 428{
285 if (!msg) 429 if (!msg)
286 msg = "(libev) system error"; 430 msg = "(libev) system error";
287 431
288 if (syserr_cb) 432 if (syserr_cb)
… …
292 perror (msg); 436 perror (msg);
293 abort (); 437 abort ();
294 } 438 }
295} 439}
296 440
441static void *
442ev_realloc_emul (void *ptr, long size)
443{
444 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and
446 * the single unix specification, so work around them here.
447 */
448
449 if (size)
450 return realloc (ptr, size);
451
452 free (ptr);
453 return 0;
454}
455
297static void *(*alloc)(void *ptr, long size); 456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298 457
299void 458void
300ev_set_allocator (void *(*cb)(void *ptr, long size)) 459ev_set_allocator (void *(*cb)(void *ptr, long size))
301{ 460{
302 alloc = cb; 461 alloc = cb;
303} 462}
304 463
305inline_speed void * 464inline_speed void *
306ev_realloc (void *ptr, long size) 465ev_realloc (void *ptr, long size)
307{ 466{
308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 467 ptr = alloc (ptr, size);
309 468
310 if (!ptr && size) 469 if (!ptr && size)
311 { 470 {
312 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313 abort (); 472 abort ();
… …
324typedef struct 483typedef struct
325{ 484{
326 WL head; 485 WL head;
327 unsigned char events; 486 unsigned char events;
328 unsigned char reify; 487 unsigned char reify;
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused;
490#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif
329#if EV_SELECT_IS_WINSOCKET 493#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle; 494 SOCKET handle;
331#endif 495#endif
332} ANFD; 496} ANFD;
333 497
… …
336 W w; 500 W w;
337 int events; 501 int events;
338} ANPENDING; 502} ANPENDING;
339 503
340#if EV_USE_INOTIFY 504#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */
341typedef struct 506typedef struct
342{ 507{
343 WL head; 508 WL head;
344} ANFS; 509} ANFS;
510#endif
511
512/* Heap Entry */
513#if EV_HEAP_CACHE_AT
514 typedef struct {
515 ev_tstamp at;
516 WT w;
517 } ANHE;
518
519 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else
523 typedef WT ANHE;
524
525 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he)
345#endif 528#endif
346 529
347#if EV_MULTIPLICITY 530#if EV_MULTIPLICITY
348 531
349 struct ev_loop 532 struct ev_loop
… …
374 557
375ev_tstamp 558ev_tstamp
376ev_time (void) 559ev_time (void)
377{ 560{
378#if EV_USE_REALTIME 561#if EV_USE_REALTIME
562 if (expect_true (have_realtime))
563 {
379 struct timespec ts; 564 struct timespec ts;
380 clock_gettime (CLOCK_REALTIME, &ts); 565 clock_gettime (CLOCK_REALTIME, &ts);
381 return ts.tv_sec + ts.tv_nsec * 1e-9; 566 return ts.tv_sec + ts.tv_nsec * 1e-9;
382#else 567 }
568#endif
569
383 struct timeval tv; 570 struct timeval tv;
384 gettimeofday (&tv, 0); 571 gettimeofday (&tv, 0);
385 return tv.tv_sec + tv.tv_usec * 1e-6; 572 return tv.tv_sec + tv.tv_usec * 1e-6;
386#endif
387} 573}
388 574
389ev_tstamp inline_size 575ev_tstamp inline_size
390get_clock (void) 576get_clock (void)
391{ 577{
… …
407{ 593{
408 return ev_rt_now; 594 return ev_rt_now;
409} 595}
410#endif 596#endif
411 597
598void
599ev_sleep (ev_tstamp delay)
600{
601 if (delay > 0.)
602 {
603#if EV_USE_NANOSLEEP
604 struct timespec ts;
605
606 ts.tv_sec = (time_t)delay;
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0);
610#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3));
612#else
613 struct timeval tv;
614
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */
621 select (0, 0, 0, 0, &tv);
622#endif
623 }
624}
625
626/*****************************************************************************/
627
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629
412int inline_size 630int inline_size
413array_nextsize (int elem, int cur, int cnt) 631array_nextsize (int elem, int cur, int cnt)
414{ 632{
415 int ncur = cur + 1; 633 int ncur = cur + 1;
416 634
417 do 635 do
418 ncur <<= 1; 636 ncur <<= 1;
419 while (cnt > ncur); 637 while (cnt > ncur);
420 638
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096) 640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423 { 641 {
424 ncur *= elem; 642 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426 ncur = ncur - sizeof (void *) * 4; 644 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem; 645 ncur /= elem;
428 } 646 }
429 647
430 return ncur; 648 return ncur;
… …
434array_realloc (int elem, void *base, int *cur, int cnt) 652array_realloc (int elem, void *base, int *cur, int cnt)
435{ 653{
436 *cur = array_nextsize (elem, *cur, cnt); 654 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur); 655 return ev_realloc (base, elem * *cur);
438} 656}
657
658#define array_init_zero(base,count) \
659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
439 660
440#define array_needsize(type,base,cur,cnt,init) \ 661#define array_needsize(type,base,cur,cnt,init) \
441 if (expect_false ((cnt) > (cur))) \ 662 if (expect_false ((cnt) > (cur))) \
442 { \ 663 { \
443 int ocur_ = (cur); \ 664 int ocur_ = (cur); \
… …
455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
456 } 677 }
457#endif 678#endif
458 679
459#define array_free(stem, idx) \ 680#define array_free(stem, idx) \
460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
461 682
462/*****************************************************************************/ 683/*****************************************************************************/
463 684
464void noinline 685void noinline
465ev_feed_event (EV_P_ void *w, int revents) 686ev_feed_event (EV_P_ void *w, int revents)
… …
487 ev_feed_event (EV_A_ events [i], type); 708 ev_feed_event (EV_A_ events [i], type);
488} 709}
489 710
490/*****************************************************************************/ 711/*****************************************************************************/
491 712
492void inline_size
493anfds_init (ANFD *base, int count)
494{
495 while (count--)
496 {
497 base->head = 0;
498 base->events = EV_NONE;
499 base->reify = 0;
500
501 ++base;
502 }
503}
504
505void inline_speed 713void inline_speed
506fd_event (EV_P_ int fd, int revents) 714fd_event (EV_P_ int fd, int revents)
507{ 715{
508 ANFD *anfd = anfds + fd; 716 ANFD *anfd = anfds + fd;
509 ev_io *w; 717 ev_io *w;
… …
533 { 741 {
534 int fd = fdchanges [i]; 742 int fd = fdchanges [i];
535 ANFD *anfd = anfds + fd; 743 ANFD *anfd = anfds + fd;
536 ev_io *w; 744 ev_io *w;
537 745
538 int events = 0; 746 unsigned char events = 0;
539 747
540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 748 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541 events |= w->events; 749 events |= (unsigned char)w->events;
542 750
543#if EV_SELECT_IS_WINSOCKET 751#if EV_SELECT_IS_WINSOCKET
544 if (events) 752 if (events)
545 { 753 {
546 unsigned long argp; 754 unsigned long arg;
755 #ifdef EV_FD_TO_WIN32_HANDLE
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
757 #else
547 anfd->handle = _get_osfhandle (fd); 758 anfd->handle = _get_osfhandle (fd);
759 #endif
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 760 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
549 } 761 }
550#endif 762#endif
551 763
764 {
765 unsigned char o_events = anfd->events;
766 unsigned char o_reify = anfd->reify;
767
552 anfd->reify = 0; 768 anfd->reify = 0;
553
554 backend_modify (EV_A_ fd, anfd->events, events);
555 anfd->events = events; 769 anfd->events = events;
770
771 if (o_events != events || o_reify & EV__IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events);
773 }
556 } 774 }
557 775
558 fdchangecnt = 0; 776 fdchangecnt = 0;
559} 777}
560 778
561void inline_size 779void inline_size
562fd_change (EV_P_ int fd) 780fd_change (EV_P_ int fd, int flags)
563{ 781{
564 if (expect_false (anfds [fd].reify)) 782 unsigned char reify = anfds [fd].reify;
565 return;
566
567 anfds [fd].reify = 1; 783 anfds [fd].reify |= flags;
568 784
785 if (expect_true (!reify))
786 {
569 ++fdchangecnt; 787 ++fdchangecnt;
570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571 fdchanges [fdchangecnt - 1] = fd; 789 fdchanges [fdchangecnt - 1] = fd;
790 }
572} 791}
573 792
574void inline_speed 793void inline_speed
575fd_kill (EV_P_ int fd) 794fd_kill (EV_P_ int fd)
576{ 795{
… …
599{ 818{
600 int fd; 819 int fd;
601 820
602 for (fd = 0; fd < anfdmax; ++fd) 821 for (fd = 0; fd < anfdmax; ++fd)
603 if (anfds [fd].events) 822 if (anfds [fd].events)
604 if (!fd_valid (fd) == -1 && errno == EBADF) 823 if (!fd_valid (fd) && errno == EBADF)
605 fd_kill (EV_A_ fd); 824 fd_kill (EV_A_ fd);
606} 825}
607 826
608/* called on ENOMEM in select/poll to kill some fds and retry */ 827/* called on ENOMEM in select/poll to kill some fds and retry */
609static void noinline 828static void noinline
… …
627 846
628 for (fd = 0; fd < anfdmax; ++fd) 847 for (fd = 0; fd < anfdmax; ++fd)
629 if (anfds [fd].events) 848 if (anfds [fd].events)
630 { 849 {
631 anfds [fd].events = 0; 850 anfds [fd].events = 0;
851 anfds [fd].emask = 0;
632 fd_change (EV_A_ fd); 852 fd_change (EV_A_ fd, EV__IOFDSET | 1);
633 } 853 }
634} 854}
635 855
636/*****************************************************************************/ 856/*****************************************************************************/
637 857
858/*
859 * the heap functions want a real array index. array index 0 uis guaranteed to not
860 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
861 * the branching factor of the d-tree.
862 */
863
864/*
865 * at the moment we allow libev the luxury of two heaps,
866 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
867 * which is more cache-efficient.
868 * the difference is about 5% with 50000+ watchers.
869 */
870#if EV_USE_4HEAP
871
872#define DHEAP 4
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k))
876
877/* away from the root */
638void inline_speed 878void inline_speed
639upheap (WT *heap, int k) 879downheap (ANHE *heap, int N, int k)
640{ 880{
641 WT w = heap [k]; 881 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0;
642 883
643 while (k) 884 for (;;)
644 { 885 {
645 int p = (k - 1) >> 1; 886 ev_tstamp minat;
887 ANHE *minpos;
888 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
646 889
647 if (heap [p]->at <= w->at) 890 /* find minimum child */
891 if (expect_true (pos + DHEAP - 1 < E))
892 {
893 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
894 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
895 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
896 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
897 }
898 else if (pos < E)
899 {
900 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
901 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
902 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
903 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
904 }
905 else
648 break; 906 break;
649 907
908 if (ANHE_at (he) <= minat)
909 break;
910
911 heap [k] = *minpos;
912 ev_active (ANHE_w (*minpos)) = k;
913
914 k = minpos - heap;
915 }
916
917 heap [k] = he;
918 ev_active (ANHE_w (he)) = k;
919}
920
921#else /* 4HEAP */
922
923#define HEAP0 1
924#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p))
926
927/* away from the root */
928void inline_speed
929downheap (ANHE *heap, int N, int k)
930{
931 ANHE he = heap [k];
932
933 for (;;)
934 {
935 int c = k << 1;
936
937 if (c > N + HEAP0 - 1)
938 break;
939
940 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941 ? 1 : 0;
942
943 if (ANHE_at (he) <= ANHE_at (heap [c]))
944 break;
945
946 heap [k] = heap [c];
947 ev_active (ANHE_w (heap [k])) = k;
948
949 k = c;
950 }
951
952 heap [k] = he;
953 ev_active (ANHE_w (he)) = k;
954}
955#endif
956
957/* towards the root */
958void inline_speed
959upheap (ANHE *heap, int k)
960{
961 ANHE he = heap [k];
962
963 for (;;)
964 {
965 int p = HPARENT (k);
966
967 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
968 break;
969
650 heap [k] = heap [p]; 970 heap [k] = heap [p];
651 ((W)heap [k])->active = k + 1; 971 ev_active (ANHE_w (heap [k])) = k;
652 k = p; 972 k = p;
653 } 973 }
654 974
655 heap [k] = w; 975 heap [k] = he;
656 ((W)heap [k])->active = k + 1; 976 ev_active (ANHE_w (he)) = k;
657
658}
659
660void inline_speed
661downheap (WT *heap, int N, int k)
662{
663 WT w = heap [k];
664
665 for (;;)
666 {
667 int c = (k << 1) + 1;
668
669 if (c >= N)
670 break;
671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
678 heap [k] = heap [c];
679 ((W)heap [k])->active = k + 1;
680
681 k = c;
682 }
683
684 heap [k] = w;
685 ((W)heap [k])->active = k + 1;
686} 977}
687 978
688void inline_size 979void inline_size
689adjustheap (WT *heap, int N, int k) 980adjustheap (ANHE *heap, int N, int k)
690{ 981{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
691 upheap (heap, k); 983 upheap (heap, k);
984 else
692 downheap (heap, N, k); 985 downheap (heap, N, k);
986}
987
988/* rebuild the heap: this function is used only once and executed rarely */
989void inline_size
990reheap (ANHE *heap, int N)
991{
992 int i;
993
994 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
995 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
996 for (i = 0; i < N; ++i)
997 upheap (heap, i + HEAP0);
693} 998}
694 999
695/*****************************************************************************/ 1000/*****************************************************************************/
696 1001
697typedef struct 1002typedef struct
698{ 1003{
699 WL head; 1004 WL head;
700 sig_atomic_t volatile gotsig; 1005 EV_ATOMIC_T gotsig;
701} ANSIG; 1006} ANSIG;
702 1007
703static ANSIG *signals; 1008static ANSIG *signals;
704static int signalmax; 1009static int signalmax;
705 1010
706static int sigpipe [2]; 1011static EV_ATOMIC_T gotsig;
707static sig_atomic_t volatile gotsig;
708static ev_io sigev;
709 1012
710void inline_size 1013/*****************************************************************************/
711signals_init (ANSIG *base, int count)
712{
713 while (count--)
714 {
715 base->head = 0;
716 base->gotsig = 0;
717
718 ++base;
719 }
720}
721
722static void
723sighandler (int signum)
724{
725#if _WIN32
726 signal (signum, sighandler);
727#endif
728
729 signals [signum - 1].gotsig = 1;
730
731 if (!gotsig)
732 {
733 int old_errno = errno;
734 gotsig = 1;
735 write (sigpipe [1], &signum, 1);
736 errno = old_errno;
737 }
738}
739
740void noinline
741ev_feed_signal_event (EV_P_ int signum)
742{
743 WL w;
744
745#if EV_MULTIPLICITY
746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747#endif
748
749 --signum;
750
751 if (signum < 0 || signum >= signalmax)
752 return;
753
754 signals [signum].gotsig = 0;
755
756 for (w = signals [signum].head; w; w = w->next)
757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758}
759
760static void
761sigcb (EV_P_ ev_io *iow, int revents)
762{
763 int signum;
764
765 read (sigpipe [0], &revents, 1);
766 gotsig = 0;
767
768 for (signum = signalmax; signum--; )
769 if (signals [signum].gotsig)
770 ev_feed_signal_event (EV_A_ signum + 1);
771}
772 1014
773void inline_speed 1015void inline_speed
774fd_intern (int fd) 1016fd_intern (int fd)
775{ 1017{
776#ifdef _WIN32 1018#ifdef _WIN32
777 int arg = 1; 1019 unsigned long arg = 1;
778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779#else 1021#else
780 fcntl (fd, F_SETFD, FD_CLOEXEC); 1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
781 fcntl (fd, F_SETFL, O_NONBLOCK); 1023 fcntl (fd, F_SETFL, O_NONBLOCK);
782#endif 1024#endif
783} 1025}
784 1026
785static void noinline 1027static void noinline
786siginit (EV_P) 1028evpipe_init (EV_P)
787{ 1029{
1030 if (!ev_is_active (&pipeev))
1031 {
1032#if EV_USE_EVENTFD
1033 if ((evfd = eventfd (0, 0)) >= 0)
1034 {
1035 evpipe [0] = -1;
1036 fd_intern (evfd);
1037 ev_io_set (&pipeev, evfd, EV_READ);
1038 }
1039 else
1040#endif
1041 {
1042 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe");
1044
788 fd_intern (sigpipe [0]); 1045 fd_intern (evpipe [0]);
789 fd_intern (sigpipe [1]); 1046 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ);
1048 }
790 1049
791 ev_io_set (&sigev, sigpipe [0], EV_READ);
792 ev_io_start (EV_A_ &sigev); 1050 ev_io_start (EV_A_ &pipeev);
793 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1051 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 }
1053}
1054
1055void inline_size
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{
1058 if (!*flag)
1059 {
1060 int old_errno = errno; /* save errno because write might clobber it */
1061
1062 *flag = 1;
1063
1064#if EV_USE_EVENTFD
1065 if (evfd >= 0)
1066 {
1067 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t));
1069 }
1070 else
1071#endif
1072 write (evpipe [1], &old_errno, 1);
1073
1074 errno = old_errno;
1075 }
1076}
1077
1078static void
1079pipecb (EV_P_ ev_io *iow, int revents)
1080{
1081#if EV_USE_EVENTFD
1082 if (evfd >= 0)
1083 {
1084 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t));
1086 }
1087 else
1088#endif
1089 {
1090 char dummy;
1091 read (evpipe [0], &dummy, 1);
1092 }
1093
1094 if (gotsig && ev_is_default_loop (EV_A))
1095 {
1096 int signum;
1097 gotsig = 0;
1098
1099 for (signum = signalmax; signum--; )
1100 if (signals [signum].gotsig)
1101 ev_feed_signal_event (EV_A_ signum + 1);
1102 }
1103
1104#if EV_ASYNC_ENABLE
1105 if (gotasync)
1106 {
1107 int i;
1108 gotasync = 0;
1109
1110 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent)
1112 {
1113 asyncs [i]->sent = 0;
1114 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1115 }
1116 }
1117#endif
794} 1118}
795 1119
796/*****************************************************************************/ 1120/*****************************************************************************/
797 1121
1122static void
1123ev_sighandler (int signum)
1124{
1125#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct;
1127#endif
1128
1129#if _WIN32
1130 signal (signum, ev_sighandler);
1131#endif
1132
1133 signals [signum - 1].gotsig = 1;
1134 evpipe_write (EV_A_ &gotsig);
1135}
1136
1137void noinline
1138ev_feed_signal_event (EV_P_ int signum)
1139{
1140 WL w;
1141
1142#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1144#endif
1145
1146 --signum;
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return;
1150
1151 signals [signum].gotsig = 0;
1152
1153 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155}
1156
1157/*****************************************************************************/
1158
798static ev_child *childs [EV_PID_HASHSIZE]; 1159static WL childs [EV_PID_HASHSIZE];
799 1160
800#ifndef _WIN32 1161#ifndef _WIN32
801 1162
802static ev_signal childev; 1163static ev_signal childev;
803 1164
1165#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0
1167#endif
1168
804void inline_speed 1169void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1170child_reap (EV_P_ int chain, int pid, int status)
806{ 1171{
807 ev_child *w; 1172 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808 1174
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 {
810 if (w->pid == pid || !w->pid) 1177 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1)))
811 { 1179 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
813 w->rpid = pid; 1181 w->rpid = pid;
814 w->rstatus = status; 1182 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1183 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 } 1184 }
1185 }
817} 1186}
818 1187
819#ifndef WCONTINUED 1188#ifndef WCONTINUED
820# define WCONTINUED 0 1189# define WCONTINUED 0
821#endif 1190#endif
… …
830 if (!WCONTINUED 1199 if (!WCONTINUED
831 || errno != EINVAL 1200 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1201 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return; 1202 return;
834 1203
835 /* make sure we are called again until all childs have been reaped */ 1204 /* make sure we are called again until all children have been reaped */
836 /* we need to do it this way so that the callback gets called before we continue */ 1205 /* we need to do it this way so that the callback gets called before we continue */
837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838 1207
839 child_reap (EV_A_ sw, pid, pid, status); 1208 child_reap (EV_A_ pid, pid, status);
840 if (EV_PID_HASHSIZE > 1) 1209 if (EV_PID_HASHSIZE > 1)
841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842} 1211}
843 1212
844#endif 1213#endif
845 1214
846/*****************************************************************************/ 1215/*****************************************************************************/
… …
908 /* kqueue is borked on everything but netbsd apparently */ 1277 /* kqueue is borked on everything but netbsd apparently */
909 /* it usually doesn't work correctly on anything but sockets and pipes */ 1278 /* it usually doesn't work correctly on anything but sockets and pipes */
910 flags &= ~EVBACKEND_KQUEUE; 1279 flags &= ~EVBACKEND_KQUEUE;
911#endif 1280#endif
912#ifdef __APPLE__ 1281#ifdef __APPLE__
913 // flags &= ~EVBACKEND_KQUEUE; for documentation 1282 /* only select works correctly on that "unix-certified" platform */
914 flags &= ~EVBACKEND_POLL; 1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
915#endif 1285#endif
916 1286
917 return flags; 1287 return flags;
918} 1288}
919 1289
920unsigned int 1290unsigned int
921ev_embeddable_backends (void) 1291ev_embeddable_backends (void)
922{ 1292{
923 return EVBACKEND_EPOLL 1293 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924 | EVBACKEND_KQUEUE 1294
925 | EVBACKEND_PORT; 1295 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1296 /* please fix it and tell me how to detect the fix */
1297 flags &= ~EVBACKEND_EPOLL;
1298
1299 return flags;
926} 1300}
927 1301
928unsigned int 1302unsigned int
929ev_backend (EV_P) 1303ev_backend (EV_P)
930{ 1304{
… …
935ev_loop_count (EV_P) 1309ev_loop_count (EV_P)
936{ 1310{
937 return loop_count; 1311 return loop_count;
938} 1312}
939 1313
1314void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316{
1317 io_blocktime = interval;
1318}
1319
1320void
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322{
1323 timeout_blocktime = interval;
1324}
1325
940static void noinline 1326static void noinline
941loop_init (EV_P_ unsigned int flags) 1327loop_init (EV_P_ unsigned int flags)
942{ 1328{
943 if (!backend) 1329 if (!backend)
944 { 1330 {
1331#if EV_USE_REALTIME
1332 if (!have_realtime)
1333 {
1334 struct timespec ts;
1335
1336 if (!clock_gettime (CLOCK_REALTIME, &ts))
1337 have_realtime = 1;
1338 }
1339#endif
1340
945#if EV_USE_MONOTONIC 1341#if EV_USE_MONOTONIC
1342 if (!have_monotonic)
946 { 1343 {
947 struct timespec ts; 1344 struct timespec ts;
1345
948 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949 have_monotonic = 1; 1347 have_monotonic = 1;
950 } 1348 }
951#endif 1349#endif
952 1350
953 ev_rt_now = ev_time (); 1351 ev_rt_now = ev_time ();
954 mn_now = get_clock (); 1352 mn_now = get_clock ();
955 now_floor = mn_now; 1353 now_floor = mn_now;
956 rtmn_diff = ev_rt_now - mn_now; 1354 rtmn_diff = ev_rt_now - mn_now;
1355
1356 io_blocktime = 0.;
1357 timeout_blocktime = 0.;
1358 backend = 0;
1359 backend_fd = -1;
1360 gotasync = 0;
1361#if EV_USE_INOTIFY
1362 fs_fd = -2;
1363#endif
957 1364
958 /* pid check not overridable via env */ 1365 /* pid check not overridable via env */
959#ifndef _WIN32 1366#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK) 1367 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid (); 1368 curpid = getpid ();
… …
964 if (!(flags & EVFLAG_NOENV) 1371 if (!(flags & EVFLAG_NOENV)
965 && !enable_secure () 1372 && !enable_secure ()
966 && getenv ("LIBEV_FLAGS")) 1373 && getenv ("LIBEV_FLAGS"))
967 flags = atoi (getenv ("LIBEV_FLAGS")); 1374 flags = atoi (getenv ("LIBEV_FLAGS"));
968 1375
969 if (!(flags & 0x0000ffffUL)) 1376 if (!(flags & 0x0000ffffU))
970 flags |= ev_recommended_backends (); 1377 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
974#if EV_USE_INOTIFY
975 fs_fd = -2;
976#endif
977 1378
978#if EV_USE_PORT 1379#if EV_USE_PORT
979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1380 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980#endif 1381#endif
981#if EV_USE_KQUEUE 1382#if EV_USE_KQUEUE
… …
989#endif 1390#endif
990#if EV_USE_SELECT 1391#if EV_USE_SELECT
991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992#endif 1393#endif
993 1394
994 ev_init (&sigev, sigcb); 1395 ev_init (&pipeev, pipecb);
995 ev_set_priority (&sigev, EV_MAXPRI); 1396 ev_set_priority (&pipeev, EV_MAXPRI);
996 } 1397 }
997} 1398}
998 1399
999static void noinline 1400static void noinline
1000loop_destroy (EV_P) 1401loop_destroy (EV_P)
1001{ 1402{
1002 int i; 1403 int i;
1404
1405 if (ev_is_active (&pipeev))
1406 {
1407 ev_ref (EV_A); /* signal watcher */
1408 ev_io_stop (EV_A_ &pipeev);
1409
1410#if EV_USE_EVENTFD
1411 if (evfd >= 0)
1412 close (evfd);
1413#endif
1414
1415 if (evpipe [0] >= 0)
1416 {
1417 close (evpipe [0]);
1418 close (evpipe [1]);
1419 }
1420 }
1003 1421
1004#if EV_USE_INOTIFY 1422#if EV_USE_INOTIFY
1005 if (fs_fd >= 0) 1423 if (fs_fd >= 0)
1006 close (fs_fd); 1424 close (fs_fd);
1007#endif 1425#endif
… …
1030 array_free (pending, [i]); 1448 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE 1449#if EV_IDLE_ENABLE
1032 array_free (idle, [i]); 1450 array_free (idle, [i]);
1033#endif 1451#endif
1034 } 1452 }
1453
1454 ev_free (anfds); anfdmax = 0;
1035 1455
1036 /* have to use the microsoft-never-gets-it-right macro */ 1456 /* have to use the microsoft-never-gets-it-right macro */
1037 array_free (fdchange, EMPTY); 1457 array_free (fdchange, EMPTY);
1038 array_free (timer, EMPTY); 1458 array_free (timer, EMPTY);
1039#if EV_PERIODIC_ENABLE 1459#if EV_PERIODIC_ENABLE
1040 array_free (periodic, EMPTY); 1460 array_free (periodic, EMPTY);
1041#endif 1461#endif
1462#if EV_FORK_ENABLE
1463 array_free (fork, EMPTY);
1464#endif
1042 array_free (prepare, EMPTY); 1465 array_free (prepare, EMPTY);
1043 array_free (check, EMPTY); 1466 array_free (check, EMPTY);
1467#if EV_ASYNC_ENABLE
1468 array_free (async, EMPTY);
1469#endif
1044 1470
1045 backend = 0; 1471 backend = 0;
1046} 1472}
1047 1473
1474#if EV_USE_INOTIFY
1048void inline_size infy_fork (EV_P); 1475void inline_size infy_fork (EV_P);
1476#endif
1049 1477
1050void inline_size 1478void inline_size
1051loop_fork (EV_P) 1479loop_fork (EV_P)
1052{ 1480{
1053#if EV_USE_PORT 1481#if EV_USE_PORT
… …
1061#endif 1489#endif
1062#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1063 infy_fork (EV_A); 1491 infy_fork (EV_A);
1064#endif 1492#endif
1065 1493
1066 if (ev_is_active (&sigev)) 1494 if (ev_is_active (&pipeev))
1067 { 1495 {
1068 /* default loop */ 1496 /* this "locks" the handlers against writing to the pipe */
1497 /* while we modify the fd vars */
1498 gotsig = 1;
1499#if EV_ASYNC_ENABLE
1500 gotasync = 1;
1501#endif
1069 1502
1070 ev_ref (EV_A); 1503 ev_ref (EV_A);
1071 ev_io_stop (EV_A_ &sigev); 1504 ev_io_stop (EV_A_ &pipeev);
1505
1506#if EV_USE_EVENTFD
1507 if (evfd >= 0)
1508 close (evfd);
1509#endif
1510
1511 if (evpipe [0] >= 0)
1512 {
1072 close (sigpipe [0]); 1513 close (evpipe [0]);
1073 close (sigpipe [1]); 1514 close (evpipe [1]);
1515 }
1074 1516
1075 while (pipe (sigpipe))
1076 syserr ("(libev) error creating pipe");
1077
1078 siginit (EV_A); 1517 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ);
1079 } 1520 }
1080 1521
1081 postfork = 0; 1522 postfork = 0;
1082} 1523}
1083 1524
1084#if EV_MULTIPLICITY 1525#if EV_MULTIPLICITY
1526
1085struct ev_loop * 1527struct ev_loop *
1086ev_loop_new (unsigned int flags) 1528ev_loop_new (unsigned int flags)
1087{ 1529{
1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089 1531
… …
1105} 1547}
1106 1548
1107void 1549void
1108ev_loop_fork (EV_P) 1550ev_loop_fork (EV_P)
1109{ 1551{
1110 postfork = 1; 1552 postfork = 1; /* must be in line with ev_default_fork */
1111} 1553}
1112 1554
1555#if EV_VERIFY
1556static void noinline
1557verify_watcher (EV_P_ W w)
1558{
1559 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1560
1561 if (w->pending)
1562 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1563}
1564
1565static void noinline
1566verify_heap (EV_P_ ANHE *heap, int N)
1567{
1568 int i;
1569
1570 for (i = HEAP0; i < N + HEAP0; ++i)
1571 {
1572 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1573 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1574 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1575
1576 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1577 }
1578}
1579
1580static void noinline
1581array_verify (EV_P_ W *ws, int cnt)
1582{
1583 while (cnt--)
1584 {
1585 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1586 verify_watcher (EV_A_ ws [cnt]);
1587 }
1588}
1589#endif
1590
1591void
1592ev_loop_verify (EV_P)
1593{
1594#if EV_VERIFY
1595 int i;
1596 WL w;
1597
1598 assert (activecnt >= -1);
1599
1600 assert (fdchangemax >= fdchangecnt);
1601 for (i = 0; i < fdchangecnt; ++i)
1602 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1603
1604 assert (anfdmax >= 0);
1605 for (i = 0; i < anfdmax; ++i)
1606 for (w = anfds [i].head; w; w = w->next)
1607 {
1608 verify_watcher (EV_A_ (W)w);
1609 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1610 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1611 }
1612
1613 assert (timermax >= timercnt);
1614 verify_heap (EV_A_ timers, timercnt);
1615
1616#if EV_PERIODIC_ENABLE
1617 assert (periodicmax >= periodiccnt);
1618 verify_heap (EV_A_ periodics, periodiccnt);
1619#endif
1620
1621 for (i = NUMPRI; i--; )
1622 {
1623 assert (pendingmax [i] >= pendingcnt [i]);
1624#if EV_IDLE_ENABLE
1625 assert (idleall >= 0);
1626 assert (idlemax [i] >= idlecnt [i]);
1627 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1628#endif
1629 }
1630
1631#if EV_FORK_ENABLE
1632 assert (forkmax >= forkcnt);
1633 array_verify (EV_A_ (W *)forks, forkcnt);
1634#endif
1635
1636#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif
1640
1641 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt);
1643
1644 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt);
1646
1647# if 0
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1113#endif 1650# endif
1651#endif
1652}
1653
1654#endif /* multiplicity */
1114 1655
1115#if EV_MULTIPLICITY 1656#if EV_MULTIPLICITY
1116struct ev_loop * 1657struct ev_loop *
1117ev_default_loop_init (unsigned int flags) 1658ev_default_loop_init (unsigned int flags)
1118#else 1659#else
1119int 1660int
1120ev_default_loop (unsigned int flags) 1661ev_default_loop (unsigned int flags)
1121#endif 1662#endif
1122{ 1663{
1123 if (sigpipe [0] == sigpipe [1])
1124 if (pipe (sigpipe))
1125 return 0;
1126
1127 if (!ev_default_loop_ptr) 1664 if (!ev_default_loop_ptr)
1128 { 1665 {
1129#if EV_MULTIPLICITY 1666#if EV_MULTIPLICITY
1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131#else 1668#else
… …
1134 1671
1135 loop_init (EV_A_ flags); 1672 loop_init (EV_A_ flags);
1136 1673
1137 if (ev_backend (EV_A)) 1674 if (ev_backend (EV_A))
1138 { 1675 {
1139 siginit (EV_A);
1140
1141#ifndef _WIN32 1676#ifndef _WIN32
1142 ev_signal_init (&childev, childcb, SIGCHLD); 1677 ev_signal_init (&childev, childcb, SIGCHLD);
1143 ev_set_priority (&childev, EV_MAXPRI); 1678 ev_set_priority (&childev, EV_MAXPRI);
1144 ev_signal_start (EV_A_ &childev); 1679 ev_signal_start (EV_A_ &childev);
1145 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1680 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1157{ 1692{
1158#if EV_MULTIPLICITY 1693#if EV_MULTIPLICITY
1159 struct ev_loop *loop = ev_default_loop_ptr; 1694 struct ev_loop *loop = ev_default_loop_ptr;
1160#endif 1695#endif
1161 1696
1697 ev_default_loop_ptr = 0;
1698
1162#ifndef _WIN32 1699#ifndef _WIN32
1163 ev_ref (EV_A); /* child watcher */ 1700 ev_ref (EV_A); /* child watcher */
1164 ev_signal_stop (EV_A_ &childev); 1701 ev_signal_stop (EV_A_ &childev);
1165#endif 1702#endif
1166 1703
1167 ev_ref (EV_A); /* signal watcher */
1168 ev_io_stop (EV_A_ &sigev);
1169
1170 close (sigpipe [0]); sigpipe [0] = 0;
1171 close (sigpipe [1]); sigpipe [1] = 0;
1172
1173 loop_destroy (EV_A); 1704 loop_destroy (EV_A);
1174} 1705}
1175 1706
1176void 1707void
1177ev_default_fork (void) 1708ev_default_fork (void)
1178{ 1709{
1179#if EV_MULTIPLICITY 1710#if EV_MULTIPLICITY
1180 struct ev_loop *loop = ev_default_loop_ptr; 1711 struct ev_loop *loop = ev_default_loop_ptr;
1181#endif 1712#endif
1182 1713
1183 if (backend) 1714 postfork = 1; /* must be in line with ev_loop_fork */
1184 postfork = 1;
1185} 1715}
1186 1716
1187/*****************************************************************************/ 1717/*****************************************************************************/
1188 1718
1189void 1719void
… …
1202 { 1732 {
1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1204 1734
1205 if (expect_true (p->w)) 1735 if (expect_true (p->w))
1206 { 1736 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1208 1738
1209 p->w->pending = 0; 1739 p->w->pending = 0;
1210 EV_CB_INVOKE (p->w, p->events); 1740 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK;
1211 } 1742 }
1212 } 1743 }
1213} 1744}
1214
1215void inline_size
1216timers_reify (EV_P)
1217{
1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
1219 {
1220 ev_timer *w = timers [0];
1221
1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224 /* first reschedule or stop timer */
1225 if (w->repeat)
1226 {
1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229 ((WT)w)->at += w->repeat;
1230 if (((WT)w)->at < mn_now)
1231 ((WT)w)->at = mn_now;
1232
1233 downheap ((WT *)timers, timercnt, 0);
1234 }
1235 else
1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239 }
1240}
1241
1242#if EV_PERIODIC_ENABLE
1243void inline_size
1244periodics_reify (EV_P)
1245{
1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247 {
1248 ev_periodic *w = periodics [0];
1249
1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252 /* first reschedule or stop timer */
1253 if (w->reschedule_cb)
1254 {
1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257 downheap ((WT *)periodics, periodiccnt, 0);
1258 }
1259 else if (w->interval)
1260 {
1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264 downheap ((WT *)periodics, periodiccnt, 0);
1265 }
1266 else
1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270 }
1271}
1272
1273static void noinline
1274periodics_reschedule (EV_P)
1275{
1276 int i;
1277
1278 /* adjust periodics after time jump */
1279 for (i = 0; i < periodiccnt; ++i)
1280 {
1281 ev_periodic *w = periodics [i];
1282
1283 if (w->reschedule_cb)
1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285 else if (w->interval)
1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287 }
1288
1289 /* now rebuild the heap */
1290 for (i = periodiccnt >> 1; i--; )
1291 downheap ((WT *)periodics, periodiccnt, i);
1292}
1293#endif
1294 1745
1295#if EV_IDLE_ENABLE 1746#if EV_IDLE_ENABLE
1296void inline_size 1747void inline_size
1297idle_reify (EV_P) 1748idle_reify (EV_P)
1298{ 1749{
… …
1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); 1761 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311 break; 1762 break;
1312 } 1763 }
1313 } 1764 }
1314 } 1765 }
1766}
1767#endif
1768
1769void inline_size
1770timers_reify (EV_P)
1771{
1772 EV_FREQUENT_CHECK;
1773
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 {
1783 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now;
1786
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788
1789 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0);
1791 }
1792 else
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 }
1798}
1799
1800#if EV_PERIODIC_ENABLE
1801void inline_size
1802periodics_reify (EV_P)
1803{
1804 EV_FREQUENT_CHECK;
1805
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1809
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818
1819 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0);
1821 }
1822 else if (w->interval)
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1846 }
1847}
1848
1849static void noinline
1850periodics_reschedule (EV_P)
1851{
1852 int i;
1853
1854 /* adjust periodics after time jump */
1855 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1856 {
1857 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1858
1859 if (w->reschedule_cb)
1860 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1861 else if (w->interval)
1862 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1863
1864 ANHE_at_cache (periodics [i]);
1865 }
1866
1867 reheap (periodics, periodiccnt);
1315} 1868}
1316#endif 1869#endif
1317 1870
1318void inline_speed 1871void inline_speed
1319time_update (EV_P_ ev_tstamp max_block) 1872time_update (EV_P_ ev_tstamp max_block)
… …
1348 */ 1901 */
1349 for (i = 4; --i; ) 1902 for (i = 4; --i; )
1350 { 1903 {
1351 rtmn_diff = ev_rt_now - mn_now; 1904 rtmn_diff = ev_rt_now - mn_now;
1352 1905
1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1906 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354 return; /* all is well */ 1907 return; /* all is well */
1355 1908
1356 ev_rt_now = ev_time (); 1909 ev_rt_now = ev_time ();
1357 mn_now = get_clock (); 1910 mn_now = get_clock ();
1358 now_floor = mn_now; 1911 now_floor = mn_now;
… …
1374#if EV_PERIODIC_ENABLE 1927#if EV_PERIODIC_ENABLE
1375 periodics_reschedule (EV_A); 1928 periodics_reschedule (EV_A);
1376#endif 1929#endif
1377 /* adjust timers. this is easy, as the offset is the same for all of them */ 1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1378 for (i = 0; i < timercnt; ++i) 1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1379 ((WT)timers [i])->at += ev_rt_now - mn_now; 1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1380 } 1937 }
1381 1938
1382 mn_now = ev_rt_now; 1939 mn_now = ev_rt_now;
1383 } 1940 }
1384} 1941}
… …
1393ev_unref (EV_P) 1950ev_unref (EV_P)
1394{ 1951{
1395 --activecnt; 1952 --activecnt;
1396} 1953}
1397 1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1398static int loop_done; 1961static int loop_done;
1399 1962
1400void 1963void
1401ev_loop (EV_P_ int flags) 1964ev_loop (EV_P_ int flags)
1402{ 1965{
1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1966 loop_done = EVUNLOOP_CANCEL;
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406 1967
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408 1969
1409 do 1970 do
1410 { 1971 {
1972#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A);
1974#endif
1975
1411#ifndef _WIN32 1976#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */ 1977 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid)) 1978 if (expect_false (getpid () != curpid))
1414 { 1979 {
1415 curpid = getpid (); 1980 curpid = getpid ();
… …
1444 /* update fd-related kernel structures */ 2009 /* update fd-related kernel structures */
1445 fd_reify (EV_A); 2010 fd_reify (EV_A);
1446 2011
1447 /* calculate blocking time */ 2012 /* calculate blocking time */
1448 { 2013 {
1449 ev_tstamp block; 2014 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.;
1450 2016
1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452 block = 0.; /* do not block at all */
1453 else
1454 { 2018 {
1455 /* update time to cancel out callback processing overhead */ 2019 /* update time to cancel out callback processing overhead */
1456 time_update (EV_A_ 1e100); 2020 time_update (EV_A_ 1e100);
1457 2021
1458 block = MAX_BLOCKTIME; 2022 waittime = MAX_BLOCKTIME;
1459 2023
1460 if (timercnt) 2024 if (timercnt)
1461 { 2025 {
1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2026 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463 if (block > to) block = to; 2027 if (waittime > to) waittime = to;
1464 } 2028 }
1465 2029
1466#if EV_PERIODIC_ENABLE 2030#if EV_PERIODIC_ENABLE
1467 if (periodiccnt) 2031 if (periodiccnt)
1468 { 2032 {
1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470 if (block > to) block = to; 2034 if (waittime > to) waittime = to;
1471 } 2035 }
1472#endif 2036#endif
1473 2037
1474 if (expect_false (block < 0.)) block = 0.; 2038 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime;
2040
2041 sleeptime = waittime - backend_fudge;
2042
2043 if (expect_true (sleeptime > io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 {
2048 ev_sleep (sleeptime);
2049 waittime -= sleeptime;
2050 }
1475 } 2051 }
1476 2052
1477 ++loop_count; 2053 ++loop_count;
1478 backend_poll (EV_A_ block); 2054 backend_poll (EV_A_ waittime);
1479 2055
1480 /* update ev_rt_now, do magic */ 2056 /* update ev_rt_now, do magic */
1481 time_update (EV_A_ block); 2057 time_update (EV_A_ waittime + sleeptime);
1482 } 2058 }
1483 2059
1484 /* queue pending timers and reschedule them */ 2060 /* queue pending timers and reschedule them */
1485 timers_reify (EV_A); /* relative timers called last */ 2061 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE 2062#if EV_PERIODIC_ENABLE
… …
1495 /* queue check watchers, to be executed first */ 2071 /* queue check watchers, to be executed first */
1496 if (expect_false (checkcnt)) 2072 if (expect_false (checkcnt))
1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498 2074
1499 call_pending (EV_A); 2075 call_pending (EV_A);
1500
1501 } 2076 }
1502 while (expect_true (activecnt && !loop_done)); 2077 while (expect_true (
2078 activecnt
2079 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081 ));
1503 2082
1504 if (loop_done == EVUNLOOP_ONE) 2083 if (loop_done == EVUNLOOP_ONE)
1505 loop_done = EVUNLOOP_CANCEL; 2084 loop_done = EVUNLOOP_CANCEL;
1506} 2085}
1507 2086
… …
1594 int fd = w->fd; 2173 int fd = w->fd;
1595 2174
1596 if (expect_false (ev_is_active (w))) 2175 if (expect_false (ev_is_active (w)))
1597 return; 2176 return;
1598 2177
1599 assert (("ev_io_start called with negative fd", fd >= 0)); 2178 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180
2181 EV_FREQUENT_CHECK;
1600 2182
1601 ev_start (EV_A_ (W)w, 1); 2183 ev_start (EV_A_ (W)w, 1);
1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1603 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2185 wlist_add (&anfds[fd].head, (WL)w);
1604 2186
1605 fd_change (EV_A_ fd); 2187 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2188 w->events &= ~EV__IOFDSET;
2189
2190 EV_FREQUENT_CHECK;
1606} 2191}
1607 2192
1608void noinline 2193void noinline
1609ev_io_stop (EV_P_ ev_io *w) 2194ev_io_stop (EV_P_ ev_io *w)
1610{ 2195{
1611 clear_pending (EV_A_ (W)w); 2196 clear_pending (EV_A_ (W)w);
1612 if (expect_false (!ev_is_active (w))) 2197 if (expect_false (!ev_is_active (w)))
1613 return; 2198 return;
1614 2199
1615 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2200 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616 2201
2202 EV_FREQUENT_CHECK;
2203
1617 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2204 wlist_del (&anfds[w->fd].head, (WL)w);
1618 ev_stop (EV_A_ (W)w); 2205 ev_stop (EV_A_ (W)w);
1619 2206
1620 fd_change (EV_A_ w->fd); 2207 fd_change (EV_A_ w->fd, 1);
2208
2209 EV_FREQUENT_CHECK;
1621} 2210}
1622 2211
1623void noinline 2212void noinline
1624ev_timer_start (EV_P_ ev_timer *w) 2213ev_timer_start (EV_P_ ev_timer *w)
1625{ 2214{
1626 if (expect_false (ev_is_active (w))) 2215 if (expect_false (ev_is_active (w)))
1627 return; 2216 return;
1628 2217
1629 ((WT)w)->at += mn_now; 2218 ev_at (w) += mn_now;
1630 2219
1631 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2220 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632 2221
2222 EV_FREQUENT_CHECK;
2223
2224 ++timercnt;
1633 ev_start (EV_A_ (W)w, ++timercnt); 2225 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1634 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2226 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635 timers [timercnt - 1] = w; 2227 ANHE_w (timers [ev_active (w)]) = (WT)w;
1636 upheap ((WT *)timers, timercnt - 1); 2228 ANHE_at_cache (timers [ev_active (w)]);
2229 upheap (timers, ev_active (w));
1637 2230
2231 EV_FREQUENT_CHECK;
2232
1638 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2233 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639} 2234}
1640 2235
1641void noinline 2236void noinline
1642ev_timer_stop (EV_P_ ev_timer *w) 2237ev_timer_stop (EV_P_ ev_timer *w)
1643{ 2238{
1644 clear_pending (EV_A_ (W)w); 2239 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w))) 2240 if (expect_false (!ev_is_active (w)))
1646 return; 2241 return;
1647 2242
1648 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2243 EV_FREQUENT_CHECK;
1649 2244
1650 { 2245 {
1651 int active = ((W)w)->active; 2246 int active = ev_active (w);
1652 2247
2248 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2249
2250 --timercnt;
2251
1653 if (expect_true (--active < --timercnt)) 2252 if (expect_true (active < timercnt + HEAP0))
1654 { 2253 {
1655 timers [active] = timers [timercnt]; 2254 timers [active] = timers [timercnt + HEAP0];
1656 adjustheap ((WT *)timers, timercnt, active); 2255 adjustheap (timers, timercnt, active);
1657 } 2256 }
1658 } 2257 }
1659 2258
1660 ((WT)w)->at -= mn_now; 2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now;
1661 2262
1662 ev_stop (EV_A_ (W)w); 2263 ev_stop (EV_A_ (W)w);
1663} 2264}
1664 2265
1665void noinline 2266void noinline
1666ev_timer_again (EV_P_ ev_timer *w) 2267ev_timer_again (EV_P_ ev_timer *w)
1667{ 2268{
2269 EV_FREQUENT_CHECK;
2270
1668 if (ev_is_active (w)) 2271 if (ev_is_active (w))
1669 { 2272 {
1670 if (w->repeat) 2273 if (w->repeat)
1671 { 2274 {
1672 ((WT)w)->at = mn_now + w->repeat; 2275 ev_at (w) = mn_now + w->repeat;
2276 ANHE_at_cache (timers [ev_active (w)]);
1673 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2277 adjustheap (timers, timercnt, ev_active (w));
1674 } 2278 }
1675 else 2279 else
1676 ev_timer_stop (EV_A_ w); 2280 ev_timer_stop (EV_A_ w);
1677 } 2281 }
1678 else if (w->repeat) 2282 else if (w->repeat)
1679 { 2283 {
1680 w->at = w->repeat; 2284 ev_at (w) = w->repeat;
1681 ev_timer_start (EV_A_ w); 2285 ev_timer_start (EV_A_ w);
1682 } 2286 }
2287
2288 EV_FREQUENT_CHECK;
1683} 2289}
1684 2290
1685#if EV_PERIODIC_ENABLE 2291#if EV_PERIODIC_ENABLE
1686void noinline 2292void noinline
1687ev_periodic_start (EV_P_ ev_periodic *w) 2293ev_periodic_start (EV_P_ ev_periodic *w)
1688{ 2294{
1689 if (expect_false (ev_is_active (w))) 2295 if (expect_false (ev_is_active (w)))
1690 return; 2296 return;
1691 2297
1692 if (w->reschedule_cb) 2298 if (w->reschedule_cb)
1693 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694 else if (w->interval) 2300 else if (w->interval)
1695 { 2301 {
1696 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1697 /* this formula differs from the one in periodic_reify because we do not always round up */ 2303 /* this formula differs from the one in periodic_reify because we do not always round up */
1698 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2304 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699 } 2305 }
1700 else 2306 else
1701 ((WT)w)->at = w->offset; 2307 ev_at (w) = w->offset;
1702 2308
2309 EV_FREQUENT_CHECK;
2310
2311 ++periodiccnt;
1703 ev_start (EV_A_ (W)w, ++periodiccnt); 2312 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1704 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2313 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705 periodics [periodiccnt - 1] = w; 2314 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706 upheap ((WT *)periodics, periodiccnt - 1); 2315 ANHE_at_cache (periodics [ev_active (w)]);
2316 upheap (periodics, ev_active (w));
1707 2317
2318 EV_FREQUENT_CHECK;
2319
1708 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2320 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709} 2321}
1710 2322
1711void noinline 2323void noinline
1712ev_periodic_stop (EV_P_ ev_periodic *w) 2324ev_periodic_stop (EV_P_ ev_periodic *w)
1713{ 2325{
1714 clear_pending (EV_A_ (W)w); 2326 clear_pending (EV_A_ (W)w);
1715 if (expect_false (!ev_is_active (w))) 2327 if (expect_false (!ev_is_active (w)))
1716 return; 2328 return;
1717 2329
1718 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2330 EV_FREQUENT_CHECK;
1719 2331
1720 { 2332 {
1721 int active = ((W)w)->active; 2333 int active = ev_active (w);
1722 2334
2335 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2336
2337 --periodiccnt;
2338
1723 if (expect_true (--active < --periodiccnt)) 2339 if (expect_true (active < periodiccnt + HEAP0))
1724 { 2340 {
1725 periodics [active] = periodics [periodiccnt]; 2341 periodics [active] = periodics [periodiccnt + HEAP0];
1726 adjustheap ((WT *)periodics, periodiccnt, active); 2342 adjustheap (periodics, periodiccnt, active);
1727 } 2343 }
1728 } 2344 }
2345
2346 EV_FREQUENT_CHECK;
1729 2347
1730 ev_stop (EV_A_ (W)w); 2348 ev_stop (EV_A_ (W)w);
1731} 2349}
1732 2350
1733void noinline 2351void noinline
… …
1745 2363
1746void noinline 2364void noinline
1747ev_signal_start (EV_P_ ev_signal *w) 2365ev_signal_start (EV_P_ ev_signal *w)
1748{ 2366{
1749#if EV_MULTIPLICITY 2367#if EV_MULTIPLICITY
1750 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1751#endif 2369#endif
1752 if (expect_false (ev_is_active (w))) 2370 if (expect_false (ev_is_active (w)))
1753 return; 2371 return;
1754 2372
1755 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2374
2375 evpipe_init (EV_A);
2376
2377 EV_FREQUENT_CHECK;
1756 2378
1757 { 2379 {
1758#ifndef _WIN32 2380#ifndef _WIN32
1759 sigset_t full, prev; 2381 sigset_t full, prev;
1760 sigfillset (&full); 2382 sigfillset (&full);
1761 sigprocmask (SIG_SETMASK, &full, &prev); 2383 sigprocmask (SIG_SETMASK, &full, &prev);
1762#endif 2384#endif
1763 2385
1764 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1765 2387
1766#ifndef _WIN32 2388#ifndef _WIN32
1767 sigprocmask (SIG_SETMASK, &prev, 0); 2389 sigprocmask (SIG_SETMASK, &prev, 0);
1768#endif 2390#endif
1769 } 2391 }
1770 2392
1771 ev_start (EV_A_ (W)w, 1); 2393 ev_start (EV_A_ (W)w, 1);
1772 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2394 wlist_add (&signals [w->signum - 1].head, (WL)w);
1773 2395
1774 if (!((WL)w)->next) 2396 if (!((WL)w)->next)
1775 { 2397 {
1776#if _WIN32 2398#if _WIN32
1777 signal (w->signum, sighandler); 2399 signal (w->signum, ev_sighandler);
1778#else 2400#else
1779 struct sigaction sa; 2401 struct sigaction sa;
1780 sa.sa_handler = sighandler; 2402 sa.sa_handler = ev_sighandler;
1781 sigfillset (&sa.sa_mask); 2403 sigfillset (&sa.sa_mask);
1782 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783 sigaction (w->signum, &sa, 0); 2405 sigaction (w->signum, &sa, 0);
1784#endif 2406#endif
1785 } 2407 }
2408
2409 EV_FREQUENT_CHECK;
1786} 2410}
1787 2411
1788void noinline 2412void noinline
1789ev_signal_stop (EV_P_ ev_signal *w) 2413ev_signal_stop (EV_P_ ev_signal *w)
1790{ 2414{
1791 clear_pending (EV_A_ (W)w); 2415 clear_pending (EV_A_ (W)w);
1792 if (expect_false (!ev_is_active (w))) 2416 if (expect_false (!ev_is_active (w)))
1793 return; 2417 return;
1794 2418
2419 EV_FREQUENT_CHECK;
2420
1795 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2421 wlist_del (&signals [w->signum - 1].head, (WL)w);
1796 ev_stop (EV_A_ (W)w); 2422 ev_stop (EV_A_ (W)w);
1797 2423
1798 if (!signals [w->signum - 1].head) 2424 if (!signals [w->signum - 1].head)
1799 signal (w->signum, SIG_DFL); 2425 signal (w->signum, SIG_DFL);
2426
2427 EV_FREQUENT_CHECK;
1800} 2428}
1801 2429
1802void 2430void
1803ev_child_start (EV_P_ ev_child *w) 2431ev_child_start (EV_P_ ev_child *w)
1804{ 2432{
1805#if EV_MULTIPLICITY 2433#if EV_MULTIPLICITY
1806 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2434 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1807#endif 2435#endif
1808 if (expect_false (ev_is_active (w))) 2436 if (expect_false (ev_is_active (w)))
1809 return; 2437 return;
1810 2438
2439 EV_FREQUENT_CHECK;
2440
1811 ev_start (EV_A_ (W)w, 1); 2441 ev_start (EV_A_ (W)w, 1);
1812 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2443
2444 EV_FREQUENT_CHECK;
1813} 2445}
1814 2446
1815void 2447void
1816ev_child_stop (EV_P_ ev_child *w) 2448ev_child_stop (EV_P_ ev_child *w)
1817{ 2449{
1818 clear_pending (EV_A_ (W)w); 2450 clear_pending (EV_A_ (W)w);
1819 if (expect_false (!ev_is_active (w))) 2451 if (expect_false (!ev_is_active (w)))
1820 return; 2452 return;
1821 2453
2454 EV_FREQUENT_CHECK;
2455
1822 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823 ev_stop (EV_A_ (W)w); 2457 ev_stop (EV_A_ (W)w);
2458
2459 EV_FREQUENT_CHECK;
1824} 2460}
1825 2461
1826#if EV_STAT_ENABLE 2462#if EV_STAT_ENABLE
1827 2463
1828# ifdef _WIN32 2464# ifdef _WIN32
1829# undef lstat 2465# undef lstat
1830# define lstat(a,b) _stati64 (a,b) 2466# define lstat(a,b) _stati64 (a,b)
1831# endif 2467# endif
1832 2468
1833#define DEF_STAT_INTERVAL 5.0074891 2469#define DEF_STAT_INTERVAL 5.0074891
2470#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1834#define MIN_STAT_INTERVAL 0.1074891 2471#define MIN_STAT_INTERVAL 0.1074891
1835 2472
1836static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1837 2474
1838#if EV_USE_INOTIFY 2475#if EV_USE_INOTIFY
1839# define EV_INOTIFY_BUFSIZE 8192 2476# define EV_INOTIFY_BUFSIZE 8192
… …
1843{ 2480{
1844 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); 2481 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);
1845 2482
1846 if (w->wd < 0) 2483 if (w->wd < 0)
1847 { 2484 {
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1848 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1849 2487
1850 /* monitor some parent directory for speedup hints */ 2488 /* monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */
1851 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1852 { 2492 {
1853 char path [4096]; 2493 char path [4096];
1854 strcpy (path, w->path); 2494 strcpy (path, w->path);
1855 2495
… …
1858 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2498 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1859 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2499 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1860 2500
1861 char *pend = strrchr (path, '/'); 2501 char *pend = strrchr (path, '/');
1862 2502
1863 if (!pend) 2503 if (!pend || pend == path)
1864 break; /* whoops, no '/', complain to your admin */ 2504 break;
1865 2505
1866 *pend = 0; 2506 *pend = 0;
1867 w->wd = inotify_add_watch (fs_fd, path, mask); 2507 w->wd = inotify_add_watch (fs_fd, path, mask);
1868 } 2508 }
1869 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1870 } 2510 }
1871 } 2511 }
1872 else
1873 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1874 2512
1875 if (w->wd >= 0) 2513 if (w->wd >= 0)
2514 {
1876 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2516
2517 /* now local changes will be tracked by inotify, but remote changes won't */
2518 /* unless the filesystem it known to be local, we therefore still poll */
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer);
2533 }
1877} 2534}
1878 2535
1879static void noinline 2536static void noinline
1880infy_del (EV_P_ ev_stat *w) 2537infy_del (EV_P_ ev_stat *w)
1881{ 2538{
… …
1895 2552
1896static void noinline 2553static void noinline
1897infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1898{ 2555{
1899 if (slot < 0) 2556 if (slot < 0)
1900 /* overflow, need to check for all hahs slots */ 2557 /* overflow, need to check for all hash slots */
1901 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1902 infy_wd (EV_A_ slot, wd, ev); 2559 infy_wd (EV_A_ slot, wd, ev);
1903 else 2560 else
1904 { 2561 {
1905 WL w_; 2562 WL w_;
… …
1911 2568
1912 if (w->wd == wd || wd == -1) 2569 if (w->wd == wd || wd == -1)
1913 { 2570 {
1914 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1915 { 2572 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1916 w->wd = -1; 2574 w->wd = -1;
1917 infy_add (EV_A_ w); /* re-add, no matter what */ 2575 infy_add (EV_A_ w); /* re-add, no matter what */
1918 } 2576 }
1919 2577
1920 stat_timer_cb (EV_A_ &w->timer, 0); 2578 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1936} 2594}
1937 2595
1938void inline_size 2596void inline_size
2597check_2625 (EV_P)
2598{
2599 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */
2602 struct utsname buf;
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return;
2607
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1;
2617}
2618
2619void inline_size
1939infy_init (EV_P) 2620infy_init (EV_P)
1940{ 2621{
1941 if (fs_fd != -2) 2622 if (fs_fd != -2)
1942 return; 2623 return;
2624
2625 fs_fd = -1;
2626
2627 check_2625 (EV_A);
1943 2628
1944 fs_fd = inotify_init (); 2629 fs_fd = inotify_init ();
1945 2630
1946 if (fs_fd >= 0) 2631 if (fs_fd >= 0)
1947 { 2632 {
… …
1975 w->wd = -1; 2660 w->wd = -1;
1976 2661
1977 if (fs_fd >= 0) 2662 if (fs_fd >= 0)
1978 infy_add (EV_A_ w); /* re-add, no matter what */ 2663 infy_add (EV_A_ w); /* re-add, no matter what */
1979 else 2664 else
1980 ev_timer_start (EV_A_ &w->timer); 2665 ev_timer_again (EV_A_ &w->timer);
1981 } 2666 }
1982
1983 } 2667 }
1984} 2668}
1985 2669
2670#endif
2671
2672#ifdef _WIN32
2673# define EV_LSTAT(p,b) _stati64 (p, b)
2674#else
2675# define EV_LSTAT(p,b) lstat (p, b)
1986#endif 2676#endif
1987 2677
1988void 2678void
1989ev_stat_stat (EV_P_ ev_stat *w) 2679ev_stat_stat (EV_P_ ev_stat *w)
1990{ 2680{
… …
2017 || w->prev.st_atime != w->attr.st_atime 2707 || w->prev.st_atime != w->attr.st_atime
2018 || w->prev.st_mtime != w->attr.st_mtime 2708 || w->prev.st_mtime != w->attr.st_mtime
2019 || w->prev.st_ctime != w->attr.st_ctime 2709 || w->prev.st_ctime != w->attr.st_ctime
2020 ) { 2710 ) {
2021 #if EV_USE_INOTIFY 2711 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0)
2713 {
2022 infy_del (EV_A_ w); 2714 infy_del (EV_A_ w);
2023 infy_add (EV_A_ w); 2715 infy_add (EV_A_ w);
2024 ev_stat_stat (EV_A_ w); /* avoid race... */ 2716 ev_stat_stat (EV_A_ w); /* avoid race... */
2717 }
2025 #endif 2718 #endif
2026 2719
2027 ev_feed_event (EV_A_ w, EV_STAT); 2720 ev_feed_event (EV_A_ w, EV_STAT);
2028 } 2721 }
2029} 2722}
… …
2032ev_stat_start (EV_P_ ev_stat *w) 2725ev_stat_start (EV_P_ ev_stat *w)
2033{ 2726{
2034 if (expect_false (ev_is_active (w))) 2727 if (expect_false (ev_is_active (w)))
2035 return; 2728 return;
2036 2729
2037 /* since we use memcmp, we need to clear any padding data etc. */
2038 memset (&w->prev, 0, sizeof (ev_statdata));
2039 memset (&w->attr, 0, sizeof (ev_statdata));
2040
2041 ev_stat_stat (EV_A_ w); 2730 ev_stat_stat (EV_A_ w);
2042 2731
2732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2043 if (w->interval < MIN_STAT_INTERVAL) 2733 w->interval = MIN_STAT_INTERVAL;
2044 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2045 2734
2046 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2735 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2047 ev_set_priority (&w->timer, ev_priority (w)); 2736 ev_set_priority (&w->timer, ev_priority (w));
2048 2737
2049#if EV_USE_INOTIFY 2738#if EV_USE_INOTIFY
2050 infy_init (EV_A); 2739 infy_init (EV_A);
2051 2740
2052 if (fs_fd >= 0) 2741 if (fs_fd >= 0)
2053 infy_add (EV_A_ w); 2742 infy_add (EV_A_ w);
2054 else 2743 else
2055#endif 2744#endif
2056 ev_timer_start (EV_A_ &w->timer); 2745 ev_timer_again (EV_A_ &w->timer);
2057 2746
2058 ev_start (EV_A_ (W)w, 1); 2747 ev_start (EV_A_ (W)w, 1);
2748
2749 EV_FREQUENT_CHECK;
2059} 2750}
2060 2751
2061void 2752void
2062ev_stat_stop (EV_P_ ev_stat *w) 2753ev_stat_stop (EV_P_ ev_stat *w)
2063{ 2754{
2064 clear_pending (EV_A_ (W)w); 2755 clear_pending (EV_A_ (W)w);
2065 if (expect_false (!ev_is_active (w))) 2756 if (expect_false (!ev_is_active (w)))
2066 return; 2757 return;
2067 2758
2759 EV_FREQUENT_CHECK;
2760
2068#if EV_USE_INOTIFY 2761#if EV_USE_INOTIFY
2069 infy_del (EV_A_ w); 2762 infy_del (EV_A_ w);
2070#endif 2763#endif
2071 ev_timer_stop (EV_A_ &w->timer); 2764 ev_timer_stop (EV_A_ &w->timer);
2072 2765
2073 ev_stop (EV_A_ (W)w); 2766 ev_stop (EV_A_ (W)w);
2767
2768 EV_FREQUENT_CHECK;
2074} 2769}
2075#endif 2770#endif
2076 2771
2077#if EV_IDLE_ENABLE 2772#if EV_IDLE_ENABLE
2078void 2773void
… …
2080{ 2775{
2081 if (expect_false (ev_is_active (w))) 2776 if (expect_false (ev_is_active (w)))
2082 return; 2777 return;
2083 2778
2084 pri_adjust (EV_A_ (W)w); 2779 pri_adjust (EV_A_ (W)w);
2780
2781 EV_FREQUENT_CHECK;
2085 2782
2086 { 2783 {
2087 int active = ++idlecnt [ABSPRI (w)]; 2784 int active = ++idlecnt [ABSPRI (w)];
2088 2785
2089 ++idleall; 2786 ++idleall;
2090 ev_start (EV_A_ (W)w, active); 2787 ev_start (EV_A_ (W)w, active);
2091 2788
2092 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2789 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2093 idles [ABSPRI (w)][active - 1] = w; 2790 idles [ABSPRI (w)][active - 1] = w;
2094 } 2791 }
2792
2793 EV_FREQUENT_CHECK;
2095} 2794}
2096 2795
2097void 2796void
2098ev_idle_stop (EV_P_ ev_idle *w) 2797ev_idle_stop (EV_P_ ev_idle *w)
2099{ 2798{
2100 clear_pending (EV_A_ (W)w); 2799 clear_pending (EV_A_ (W)w);
2101 if (expect_false (!ev_is_active (w))) 2800 if (expect_false (!ev_is_active (w)))
2102 return; 2801 return;
2103 2802
2803 EV_FREQUENT_CHECK;
2804
2104 { 2805 {
2105 int active = ((W)w)->active; 2806 int active = ev_active (w);
2106 2807
2107 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2808 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2108 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2809 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2109 2810
2110 ev_stop (EV_A_ (W)w); 2811 ev_stop (EV_A_ (W)w);
2111 --idleall; 2812 --idleall;
2112 } 2813 }
2814
2815 EV_FREQUENT_CHECK;
2113} 2816}
2114#endif 2817#endif
2115 2818
2116void 2819void
2117ev_prepare_start (EV_P_ ev_prepare *w) 2820ev_prepare_start (EV_P_ ev_prepare *w)
2118{ 2821{
2119 if (expect_false (ev_is_active (w))) 2822 if (expect_false (ev_is_active (w)))
2120 return; 2823 return;
2824
2825 EV_FREQUENT_CHECK;
2121 2826
2122 ev_start (EV_A_ (W)w, ++preparecnt); 2827 ev_start (EV_A_ (W)w, ++preparecnt);
2123 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2828 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2124 prepares [preparecnt - 1] = w; 2829 prepares [preparecnt - 1] = w;
2830
2831 EV_FREQUENT_CHECK;
2125} 2832}
2126 2833
2127void 2834void
2128ev_prepare_stop (EV_P_ ev_prepare *w) 2835ev_prepare_stop (EV_P_ ev_prepare *w)
2129{ 2836{
2130 clear_pending (EV_A_ (W)w); 2837 clear_pending (EV_A_ (W)w);
2131 if (expect_false (!ev_is_active (w))) 2838 if (expect_false (!ev_is_active (w)))
2132 return; 2839 return;
2133 2840
2841 EV_FREQUENT_CHECK;
2842
2134 { 2843 {
2135 int active = ((W)w)->active; 2844 int active = ev_active (w);
2845
2136 prepares [active - 1] = prepares [--preparecnt]; 2846 prepares [active - 1] = prepares [--preparecnt];
2137 ((W)prepares [active - 1])->active = active; 2847 ev_active (prepares [active - 1]) = active;
2138 } 2848 }
2139 2849
2140 ev_stop (EV_A_ (W)w); 2850 ev_stop (EV_A_ (W)w);
2851
2852 EV_FREQUENT_CHECK;
2141} 2853}
2142 2854
2143void 2855void
2144ev_check_start (EV_P_ ev_check *w) 2856ev_check_start (EV_P_ ev_check *w)
2145{ 2857{
2146 if (expect_false (ev_is_active (w))) 2858 if (expect_false (ev_is_active (w)))
2147 return; 2859 return;
2860
2861 EV_FREQUENT_CHECK;
2148 2862
2149 ev_start (EV_A_ (W)w, ++checkcnt); 2863 ev_start (EV_A_ (W)w, ++checkcnt);
2150 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2864 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2151 checks [checkcnt - 1] = w; 2865 checks [checkcnt - 1] = w;
2866
2867 EV_FREQUENT_CHECK;
2152} 2868}
2153 2869
2154void 2870void
2155ev_check_stop (EV_P_ ev_check *w) 2871ev_check_stop (EV_P_ ev_check *w)
2156{ 2872{
2157 clear_pending (EV_A_ (W)w); 2873 clear_pending (EV_A_ (W)w);
2158 if (expect_false (!ev_is_active (w))) 2874 if (expect_false (!ev_is_active (w)))
2159 return; 2875 return;
2160 2876
2877 EV_FREQUENT_CHECK;
2878
2161 { 2879 {
2162 int active = ((W)w)->active; 2880 int active = ev_active (w);
2881
2163 checks [active - 1] = checks [--checkcnt]; 2882 checks [active - 1] = checks [--checkcnt];
2164 ((W)checks [active - 1])->active = active; 2883 ev_active (checks [active - 1]) = active;
2165 } 2884 }
2166 2885
2167 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2168} 2889}
2169 2890
2170#if EV_EMBED_ENABLE 2891#if EV_EMBED_ENABLE
2171void noinline 2892void noinline
2172ev_embed_sweep (EV_P_ ev_embed *w) 2893ev_embed_sweep (EV_P_ ev_embed *w)
2173{ 2894{
2174 ev_loop (w->loop, EVLOOP_NONBLOCK); 2895 ev_loop (w->other, EVLOOP_NONBLOCK);
2175} 2896}
2176 2897
2177static void 2898static void
2178embed_cb (EV_P_ ev_io *io, int revents) 2899embed_io_cb (EV_P_ ev_io *io, int revents)
2179{ 2900{
2180 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2901 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2181 2902
2182 if (ev_cb (w)) 2903 if (ev_cb (w))
2183 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2904 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184 else 2905 else
2185 ev_embed_sweep (loop, w); 2906 ev_loop (w->other, EVLOOP_NONBLOCK);
2186} 2907}
2908
2909static void
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913
2914 {
2915 struct ev_loop *loop = w->other;
2916
2917 while (fdchangecnt)
2918 {
2919 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2921 }
2922 }
2923}
2924
2925static void
2926embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2927{
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929
2930 ev_embed_stop (EV_A_ w);
2931
2932 {
2933 struct ev_loop *loop = w->other;
2934
2935 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2937 }
2938
2939 ev_embed_start (EV_A_ w);
2940}
2941
2942#if 0
2943static void
2944embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2945{
2946 ev_idle_stop (EV_A_ idle);
2947}
2948#endif
2187 2949
2188void 2950void
2189ev_embed_start (EV_P_ ev_embed *w) 2951ev_embed_start (EV_P_ ev_embed *w)
2190{ 2952{
2191 if (expect_false (ev_is_active (w))) 2953 if (expect_false (ev_is_active (w)))
2192 return; 2954 return;
2193 2955
2194 { 2956 {
2195 struct ev_loop *loop = w->loop; 2957 struct ev_loop *loop = w->other;
2196 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198 } 2960 }
2961
2962 EV_FREQUENT_CHECK;
2199 2963
2200 ev_set_priority (&w->io, ev_priority (w)); 2964 ev_set_priority (&w->io, ev_priority (w));
2201 ev_io_start (EV_A_ &w->io); 2965 ev_io_start (EV_A_ &w->io);
2202 2966
2967 ev_prepare_init (&w->prepare, embed_prepare_cb);
2968 ev_set_priority (&w->prepare, EV_MINPRI);
2969 ev_prepare_start (EV_A_ &w->prepare);
2970
2971 ev_fork_init (&w->fork, embed_fork_cb);
2972 ev_fork_start (EV_A_ &w->fork);
2973
2974 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2975
2203 ev_start (EV_A_ (W)w, 1); 2976 ev_start (EV_A_ (W)w, 1);
2977
2978 EV_FREQUENT_CHECK;
2204} 2979}
2205 2980
2206void 2981void
2207ev_embed_stop (EV_P_ ev_embed *w) 2982ev_embed_stop (EV_P_ ev_embed *w)
2208{ 2983{
2209 clear_pending (EV_A_ (W)w); 2984 clear_pending (EV_A_ (W)w);
2210 if (expect_false (!ev_is_active (w))) 2985 if (expect_false (!ev_is_active (w)))
2211 return; 2986 return;
2212 2987
2988 EV_FREQUENT_CHECK;
2989
2213 ev_io_stop (EV_A_ &w->io); 2990 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork);
2214 2993
2215 ev_stop (EV_A_ (W)w); 2994 EV_FREQUENT_CHECK;
2216} 2995}
2217#endif 2996#endif
2218 2997
2219#if EV_FORK_ENABLE 2998#if EV_FORK_ENABLE
2220void 2999void
2221ev_fork_start (EV_P_ ev_fork *w) 3000ev_fork_start (EV_P_ ev_fork *w)
2222{ 3001{
2223 if (expect_false (ev_is_active (w))) 3002 if (expect_false (ev_is_active (w)))
2224 return; 3003 return;
3004
3005 EV_FREQUENT_CHECK;
2225 3006
2226 ev_start (EV_A_ (W)w, ++forkcnt); 3007 ev_start (EV_A_ (W)w, ++forkcnt);
2227 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3008 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2228 forks [forkcnt - 1] = w; 3009 forks [forkcnt - 1] = w;
3010
3011 EV_FREQUENT_CHECK;
2229} 3012}
2230 3013
2231void 3014void
2232ev_fork_stop (EV_P_ ev_fork *w) 3015ev_fork_stop (EV_P_ ev_fork *w)
2233{ 3016{
2234 clear_pending (EV_A_ (W)w); 3017 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3018 if (expect_false (!ev_is_active (w)))
2236 return; 3019 return;
2237 3020
3021 EV_FREQUENT_CHECK;
3022
2238 { 3023 {
2239 int active = ((W)w)->active; 3024 int active = ev_active (w);
3025
2240 forks [active - 1] = forks [--forkcnt]; 3026 forks [active - 1] = forks [--forkcnt];
2241 ((W)forks [active - 1])->active = active; 3027 ev_active (forks [active - 1]) = active;
2242 } 3028 }
2243 3029
2244 ev_stop (EV_A_ (W)w); 3030 ev_stop (EV_A_ (W)w);
3031
3032 EV_FREQUENT_CHECK;
3033}
3034#endif
3035
3036#if EV_ASYNC_ENABLE
3037void
3038ev_async_start (EV_P_ ev_async *w)
3039{
3040 if (expect_false (ev_is_active (w)))
3041 return;
3042
3043 evpipe_init (EV_A);
3044
3045 EV_FREQUENT_CHECK;
3046
3047 ev_start (EV_A_ (W)w, ++asynccnt);
3048 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3049 asyncs [asynccnt - 1] = w;
3050
3051 EV_FREQUENT_CHECK;
3052}
3053
3054void
3055ev_async_stop (EV_P_ ev_async *w)
3056{
3057 clear_pending (EV_A_ (W)w);
3058 if (expect_false (!ev_is_active (w)))
3059 return;
3060
3061 EV_FREQUENT_CHECK;
3062
3063 {
3064 int active = ev_active (w);
3065
3066 asyncs [active - 1] = asyncs [--asynccnt];
3067 ev_active (asyncs [active - 1]) = active;
3068 }
3069
3070 ev_stop (EV_A_ (W)w);
3071
3072 EV_FREQUENT_CHECK;
3073}
3074
3075void
3076ev_async_send (EV_P_ ev_async *w)
3077{
3078 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync);
2245} 3080}
2246#endif 3081#endif
2247 3082
2248/*****************************************************************************/ 3083/*****************************************************************************/
2249 3084
… …
2259once_cb (EV_P_ struct ev_once *once, int revents) 3094once_cb (EV_P_ struct ev_once *once, int revents)
2260{ 3095{
2261 void (*cb)(int revents, void *arg) = once->cb; 3096 void (*cb)(int revents, void *arg) = once->cb;
2262 void *arg = once->arg; 3097 void *arg = once->arg;
2263 3098
2264 ev_io_stop (EV_A_ &once->io); 3099 ev_io_stop (EV_A_ &once->io);
2265 ev_timer_stop (EV_A_ &once->to); 3100 ev_timer_stop (EV_A_ &once->to);
2266 ev_free (once); 3101 ev_free (once);
2267 3102
2268 cb (revents, arg); 3103 cb (revents, arg);
2269} 3104}
2270 3105
2271static void 3106static void
2272once_cb_io (EV_P_ ev_io *w, int revents) 3107once_cb_io (EV_P_ ev_io *w, int revents)
2273{ 3108{
2274 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3109 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3110
3111 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2275} 3112}
2276 3113
2277static void 3114static void
2278once_cb_to (EV_P_ ev_timer *w, int revents) 3115once_cb_to (EV_P_ ev_timer *w, int revents)
2279{ 3116{
2280 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3117 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3118
3119 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2281} 3120}
2282 3121
2283void 3122void
2284ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3123ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2285{ 3124{
… …
2307 ev_timer_set (&once->to, timeout, 0.); 3146 ev_timer_set (&once->to, timeout, 0.);
2308 ev_timer_start (EV_A_ &once->to); 3147 ev_timer_start (EV_A_ &once->to);
2309 } 3148 }
2310} 3149}
2311 3150
3151#if EV_MULTIPLICITY
3152 #include "ev_wrap.h"
3153#endif
3154
2312#ifdef __cplusplus 3155#ifdef __cplusplus
2313} 3156}
2314#endif 3157#endif
2315 3158

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