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Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 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;
… …
541 events |= (unsigned char)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
552 { 764 {
553 unsigned char o_events = anfd->events; 765 unsigned char o_events = anfd->events;
554 unsigned char o_reify = anfd->reify; 766 unsigned char o_reify = anfd->reify;
555 767
556 anfd->reify = 0; 768 anfd->reify = 0;
557 anfd->events = events; 769 anfd->events = events;
558 770
559 if (o_events != events || o_reify & EV_IOFDSET) 771 if (o_events != events || o_reify & EV__IOFDSET)
560 backend_modify (EV_A_ fd, o_events, events); 772 backend_modify (EV_A_ fd, o_events, events);
561 } 773 }
562 } 774 }
563 775
564 fdchangecnt = 0; 776 fdchangecnt = 0;
… …
606{ 818{
607 int fd; 819 int fd;
608 820
609 for (fd = 0; fd < anfdmax; ++fd) 821 for (fd = 0; fd < anfdmax; ++fd)
610 if (anfds [fd].events) 822 if (anfds [fd].events)
611 if (!fd_valid (fd) == -1 && errno == EBADF) 823 if (!fd_valid (fd) && errno == EBADF)
612 fd_kill (EV_A_ fd); 824 fd_kill (EV_A_ fd);
613} 825}
614 826
615/* 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 */
616static void noinline 828static void noinline
… …
634 846
635 for (fd = 0; fd < anfdmax; ++fd) 847 for (fd = 0; fd < anfdmax; ++fd)
636 if (anfds [fd].events) 848 if (anfds [fd].events)
637 { 849 {
638 anfds [fd].events = 0; 850 anfds [fd].events = 0;
851 anfds [fd].emask = 0;
639 fd_change (EV_A_ fd, EV_IOFDSET | 1); 852 fd_change (EV_A_ fd, EV__IOFDSET | 1);
640 } 853 }
641} 854}
642 855
643/*****************************************************************************/ 856/*****************************************************************************/
644 857
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 */
645void inline_speed 878void inline_speed
646upheap (WT *heap, int k) 879downheap (ANHE *heap, int N, int k)
647{ 880{
648 WT w = heap [k]; 881 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0;
649 883
650 while (k) 884 for (;;)
651 { 885 {
652 int p = (k - 1) >> 1; 886 ev_tstamp minat;
887 ANHE *minpos;
888 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
653 889
654 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
655 break; 906 break;
656 907
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
657 heap [k] = heap [p]; 970 heap [k] = heap [p];
658 ((W)heap [k])->active = k + 1; 971 ev_active (ANHE_w (heap [k])) = k;
659 k = p; 972 k = p;
660 } 973 }
661 974
662 heap [k] = w; 975 heap [k] = he;
663 ((W)heap [k])->active = k + 1; 976 ev_active (ANHE_w (he)) = k;
664}
665
666void inline_speed
667downheap (WT *heap, int N, int k)
668{
669 WT w = heap [k];
670
671 for (;;)
672 {
673 int c = (k << 1) + 1;
674
675 if (c >= N)
676 break;
677
678 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
679 ? 1 : 0;
680
681 if (w->at <= heap [c]->at)
682 break;
683
684 heap [k] = heap [c];
685 ((W)heap [k])->active = k + 1;
686
687 k = c;
688 }
689
690 heap [k] = w;
691 ((W)heap [k])->active = k + 1;
692} 977}
693 978
694void inline_size 979void inline_size
695adjustheap (WT *heap, int N, int k) 980adjustheap (ANHE *heap, int N, int k)
696{ 981{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
697 upheap (heap, k); 983 upheap (heap, k);
984 else
698 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);
699} 998}
700 999
701/*****************************************************************************/ 1000/*****************************************************************************/
702 1001
703typedef struct 1002typedef struct
704{ 1003{
705 WL head; 1004 WL head;
706 sig_atomic_t volatile gotsig; 1005 EV_ATOMIC_T gotsig;
707} ANSIG; 1006} ANSIG;
708 1007
709static ANSIG *signals; 1008static ANSIG *signals;
710static int signalmax; 1009static int signalmax;
711 1010
712static int sigpipe [2]; 1011static EV_ATOMIC_T gotsig;
713static sig_atomic_t volatile gotsig;
714static ev_io sigev;
715 1012
716void inline_size 1013/*****************************************************************************/
717signals_init (ANSIG *base, int count)
718{
719 while (count--)
720 {
721 base->head = 0;
722 base->gotsig = 0;
723
724 ++base;
725 }
726}
727
728static void
729sighandler (int signum)
730{
731#if _WIN32
732 signal (signum, sighandler);
733#endif
734
735 signals [signum - 1].gotsig = 1;
736
737 if (!gotsig)
738 {
739 int old_errno = errno;
740 gotsig = 1;
741 write (sigpipe [1], &signum, 1);
742 errno = old_errno;
743 }
744}
745
746void noinline
747ev_feed_signal_event (EV_P_ int signum)
748{
749 WL w;
750
751#if EV_MULTIPLICITY
752 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753#endif
754
755 --signum;
756
757 if (signum < 0 || signum >= signalmax)
758 return;
759
760 signals [signum].gotsig = 0;
761
762 for (w = signals [signum].head; w; w = w->next)
763 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764}
765
766static void
767sigcb (EV_P_ ev_io *iow, int revents)
768{
769 int signum;
770
771 read (sigpipe [0], &revents, 1);
772 gotsig = 0;
773
774 for (signum = signalmax; signum--; )
775 if (signals [signum].gotsig)
776 ev_feed_signal_event (EV_A_ signum + 1);
777}
778 1014
779void inline_speed 1015void inline_speed
780fd_intern (int fd) 1016fd_intern (int fd)
781{ 1017{
782#ifdef _WIN32 1018#ifdef _WIN32
783 int arg = 1; 1019 unsigned long arg = 1;
784 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
785#else 1021#else
786 fcntl (fd, F_SETFD, FD_CLOEXEC); 1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
787 fcntl (fd, F_SETFL, O_NONBLOCK); 1023 fcntl (fd, F_SETFL, O_NONBLOCK);
788#endif 1024#endif
789} 1025}
790 1026
791static void noinline 1027static void noinline
792siginit (EV_P) 1028evpipe_init (EV_P)
793{ 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
794 fd_intern (sigpipe [0]); 1045 fd_intern (evpipe [0]);
795 fd_intern (sigpipe [1]); 1046 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ);
1048 }
796 1049
797 ev_io_set (&sigev, sigpipe [0], EV_READ);
798 ev_io_start (EV_A_ &sigev); 1050 ev_io_start (EV_A_ &pipeev);
799 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
800} 1118}
801 1119
802/*****************************************************************************/ 1120/*****************************************************************************/
803 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
804static WL childs [EV_PID_HASHSIZE]; 1159static WL childs [EV_PID_HASHSIZE];
805 1160
806#ifndef _WIN32 1161#ifndef _WIN32
807 1162
808static ev_signal childev; 1163static ev_signal childev;
809 1164
1165#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0
1167#endif
1168
810void inline_speed 1169void inline_speed
811child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1170child_reap (EV_P_ int chain, int pid, int status)
812{ 1171{
813 ev_child *w; 1172 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
814 1174
815 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 {
816 if (w->pid == pid || !w->pid) 1177 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1)))
817 { 1179 {
818 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 */
819 w->rpid = pid; 1181 w->rpid = pid;
820 w->rstatus = status; 1182 w->rstatus = status;
821 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1183 ev_feed_event (EV_A_ (W)w, EV_CHILD);
822 } 1184 }
1185 }
823} 1186}
824 1187
825#ifndef WCONTINUED 1188#ifndef WCONTINUED
826# define WCONTINUED 0 1189# define WCONTINUED 0
827#endif 1190#endif
… …
836 if (!WCONTINUED 1199 if (!WCONTINUED
837 || errno != EINVAL 1200 || errno != EINVAL
838 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1201 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
839 return; 1202 return;
840 1203
841 /* 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 */
842 /* 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 */
843 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
844 1207
845 child_reap (EV_A_ sw, pid, pid, status); 1208 child_reap (EV_A_ pid, pid, status);
846 if (EV_PID_HASHSIZE > 1) 1209 if (EV_PID_HASHSIZE > 1)
847 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 */
848} 1211}
849 1212
850#endif 1213#endif
851 1214
852/*****************************************************************************/ 1215/*****************************************************************************/
… …
914 /* kqueue is borked on everything but netbsd apparently */ 1277 /* kqueue is borked on everything but netbsd apparently */
915 /* 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 */
916 flags &= ~EVBACKEND_KQUEUE; 1279 flags &= ~EVBACKEND_KQUEUE;
917#endif 1280#endif
918#ifdef __APPLE__ 1281#ifdef __APPLE__
919 // flags &= ~EVBACKEND_KQUEUE; for documentation 1282 /* only select works correctly on that "unix-certified" platform */
920 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 */
921#endif 1285#endif
922 1286
923 return flags; 1287 return flags;
924} 1288}
925 1289
926unsigned int 1290unsigned int
927ev_embeddable_backends (void) 1291ev_embeddable_backends (void)
928{ 1292{
929 return EVBACKEND_EPOLL 1293 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
930 | EVBACKEND_KQUEUE 1294
931 | 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;
932} 1300}
933 1301
934unsigned int 1302unsigned int
935ev_backend (EV_P) 1303ev_backend (EV_P)
936{ 1304{
… …
941ev_loop_count (EV_P) 1309ev_loop_count (EV_P)
942{ 1310{
943 return loop_count; 1311 return loop_count;
944} 1312}
945 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
946static void noinline 1326static void noinline
947loop_init (EV_P_ unsigned int flags) 1327loop_init (EV_P_ unsigned int flags)
948{ 1328{
949 if (!backend) 1329 if (!backend)
950 { 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
951#if EV_USE_MONOTONIC 1341#if EV_USE_MONOTONIC
1342 if (!have_monotonic)
952 { 1343 {
953 struct timespec ts; 1344 struct timespec ts;
1345
954 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
955 have_monotonic = 1; 1347 have_monotonic = 1;
956 } 1348 }
957#endif 1349#endif
958 1350
959 ev_rt_now = ev_time (); 1351 ev_rt_now = ev_time ();
960 mn_now = get_clock (); 1352 mn_now = get_clock ();
961 now_floor = mn_now; 1353 now_floor = mn_now;
962 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
963 1364
964 /* pid check not overridable via env */ 1365 /* pid check not overridable via env */
965#ifndef _WIN32 1366#ifndef _WIN32
966 if (flags & EVFLAG_FORKCHECK) 1367 if (flags & EVFLAG_FORKCHECK)
967 curpid = getpid (); 1368 curpid = getpid ();
… …
970 if (!(flags & EVFLAG_NOENV) 1371 if (!(flags & EVFLAG_NOENV)
971 && !enable_secure () 1372 && !enable_secure ()
972 && getenv ("LIBEV_FLAGS")) 1373 && getenv ("LIBEV_FLAGS"))
973 flags = atoi (getenv ("LIBEV_FLAGS")); 1374 flags = atoi (getenv ("LIBEV_FLAGS"));
974 1375
975 if (!(flags & 0x0000ffffUL)) 1376 if (!(flags & 0x0000ffffU))
976 flags |= ev_recommended_backends (); 1377 flags |= ev_recommended_backends ();
977
978 backend = 0;
979 backend_fd = -1;
980#if EV_USE_INOTIFY
981 fs_fd = -2;
982#endif
983 1378
984#if EV_USE_PORT 1379#if EV_USE_PORT
985 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1380 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
986#endif 1381#endif
987#if EV_USE_KQUEUE 1382#if EV_USE_KQUEUE
… …
995#endif 1390#endif
996#if EV_USE_SELECT 1391#if EV_USE_SELECT
997 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
998#endif 1393#endif
999 1394
1000 ev_init (&sigev, sigcb); 1395 ev_init (&pipeev, pipecb);
1001 ev_set_priority (&sigev, EV_MAXPRI); 1396 ev_set_priority (&pipeev, EV_MAXPRI);
1002 } 1397 }
1003} 1398}
1004 1399
1005static void noinline 1400static void noinline
1006loop_destroy (EV_P) 1401loop_destroy (EV_P)
1007{ 1402{
1008 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 }
1009 1421
1010#if EV_USE_INOTIFY 1422#if EV_USE_INOTIFY
1011 if (fs_fd >= 0) 1423 if (fs_fd >= 0)
1012 close (fs_fd); 1424 close (fs_fd);
1013#endif 1425#endif
… …
1036 array_free (pending, [i]); 1448 array_free (pending, [i]);
1037#if EV_IDLE_ENABLE 1449#if EV_IDLE_ENABLE
1038 array_free (idle, [i]); 1450 array_free (idle, [i]);
1039#endif 1451#endif
1040 } 1452 }
1453
1454 ev_free (anfds); anfdmax = 0;
1041 1455
1042 /* have to use the microsoft-never-gets-it-right macro */ 1456 /* have to use the microsoft-never-gets-it-right macro */
1043 array_free (fdchange, EMPTY); 1457 array_free (fdchange, EMPTY);
1044 array_free (timer, EMPTY); 1458 array_free (timer, EMPTY);
1045#if EV_PERIODIC_ENABLE 1459#if EV_PERIODIC_ENABLE
1046 array_free (periodic, EMPTY); 1460 array_free (periodic, EMPTY);
1047#endif 1461#endif
1462#if EV_FORK_ENABLE
1463 array_free (fork, EMPTY);
1464#endif
1048 array_free (prepare, EMPTY); 1465 array_free (prepare, EMPTY);
1049 array_free (check, EMPTY); 1466 array_free (check, EMPTY);
1467#if EV_ASYNC_ENABLE
1468 array_free (async, EMPTY);
1469#endif
1050 1470
1051 backend = 0; 1471 backend = 0;
1052} 1472}
1053 1473
1474#if EV_USE_INOTIFY
1054void inline_size infy_fork (EV_P); 1475void inline_size infy_fork (EV_P);
1476#endif
1055 1477
1056void inline_size 1478void inline_size
1057loop_fork (EV_P) 1479loop_fork (EV_P)
1058{ 1480{
1059#if EV_USE_PORT 1481#if EV_USE_PORT
… …
1067#endif 1489#endif
1068#if EV_USE_INOTIFY 1490#if EV_USE_INOTIFY
1069 infy_fork (EV_A); 1491 infy_fork (EV_A);
1070#endif 1492#endif
1071 1493
1072 if (ev_is_active (&sigev)) 1494 if (ev_is_active (&pipeev))
1073 { 1495 {
1074 /* 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
1075 1502
1076 ev_ref (EV_A); 1503 ev_ref (EV_A);
1077 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 {
1078 close (sigpipe [0]); 1513 close (evpipe [0]);
1079 close (sigpipe [1]); 1514 close (evpipe [1]);
1515 }
1080 1516
1081 while (pipe (sigpipe))
1082 syserr ("(libev) error creating pipe");
1083
1084 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);
1085 } 1520 }
1086 1521
1087 postfork = 0; 1522 postfork = 0;
1088} 1523}
1089 1524
1090#if EV_MULTIPLICITY 1525#if EV_MULTIPLICITY
1526
1091struct ev_loop * 1527struct ev_loop *
1092ev_loop_new (unsigned int flags) 1528ev_loop_new (unsigned int flags)
1093{ 1529{
1094 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));
1095 1531
… …
1111} 1547}
1112 1548
1113void 1549void
1114ev_loop_fork (EV_P) 1550ev_loop_fork (EV_P)
1115{ 1551{
1116 postfork = 1; 1552 postfork = 1; /* must be in line with ev_default_fork */
1117} 1553}
1118 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)
1119#endif 1650# endif
1651#endif
1652}
1653
1654#endif /* multiplicity */
1120 1655
1121#if EV_MULTIPLICITY 1656#if EV_MULTIPLICITY
1122struct ev_loop * 1657struct ev_loop *
1123ev_default_loop_init (unsigned int flags) 1658ev_default_loop_init (unsigned int flags)
1124#else 1659#else
1125int 1660int
1126ev_default_loop (unsigned int flags) 1661ev_default_loop (unsigned int flags)
1127#endif 1662#endif
1128{ 1663{
1129 if (sigpipe [0] == sigpipe [1])
1130 if (pipe (sigpipe))
1131 return 0;
1132
1133 if (!ev_default_loop_ptr) 1664 if (!ev_default_loop_ptr)
1134 { 1665 {
1135#if EV_MULTIPLICITY 1666#if EV_MULTIPLICITY
1136 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1137#else 1668#else
… …
1140 1671
1141 loop_init (EV_A_ flags); 1672 loop_init (EV_A_ flags);
1142 1673
1143 if (ev_backend (EV_A)) 1674 if (ev_backend (EV_A))
1144 { 1675 {
1145 siginit (EV_A);
1146
1147#ifndef _WIN32 1676#ifndef _WIN32
1148 ev_signal_init (&childev, childcb, SIGCHLD); 1677 ev_signal_init (&childev, childcb, SIGCHLD);
1149 ev_set_priority (&childev, EV_MAXPRI); 1678 ev_set_priority (&childev, EV_MAXPRI);
1150 ev_signal_start (EV_A_ &childev); 1679 ev_signal_start (EV_A_ &childev);
1151 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1680 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1163{ 1692{
1164#if EV_MULTIPLICITY 1693#if EV_MULTIPLICITY
1165 struct ev_loop *loop = ev_default_loop_ptr; 1694 struct ev_loop *loop = ev_default_loop_ptr;
1166#endif 1695#endif
1167 1696
1697 ev_default_loop_ptr = 0;
1698
1168#ifndef _WIN32 1699#ifndef _WIN32
1169 ev_ref (EV_A); /* child watcher */ 1700 ev_ref (EV_A); /* child watcher */
1170 ev_signal_stop (EV_A_ &childev); 1701 ev_signal_stop (EV_A_ &childev);
1171#endif 1702#endif
1172 1703
1173 ev_ref (EV_A); /* signal watcher */
1174 ev_io_stop (EV_A_ &sigev);
1175
1176 close (sigpipe [0]); sigpipe [0] = 0;
1177 close (sigpipe [1]); sigpipe [1] = 0;
1178
1179 loop_destroy (EV_A); 1704 loop_destroy (EV_A);
1180} 1705}
1181 1706
1182void 1707void
1183ev_default_fork (void) 1708ev_default_fork (void)
1184{ 1709{
1185#if EV_MULTIPLICITY 1710#if EV_MULTIPLICITY
1186 struct ev_loop *loop = ev_default_loop_ptr; 1711 struct ev_loop *loop = ev_default_loop_ptr;
1187#endif 1712#endif
1188 1713
1189 if (backend) 1714 postfork = 1; /* must be in line with ev_loop_fork */
1190 postfork = 1;
1191} 1715}
1192 1716
1193/*****************************************************************************/ 1717/*****************************************************************************/
1194 1718
1195void 1719void
… …
1208 { 1732 {
1209 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1210 1734
1211 if (expect_true (p->w)) 1735 if (expect_true (p->w))
1212 { 1736 {
1213 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1214 1738
1215 p->w->pending = 0; 1739 p->w->pending = 0;
1216 EV_CB_INVOKE (p->w, p->events); 1740 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK;
1217 } 1742 }
1218 } 1743 }
1219} 1744}
1220
1221void inline_size
1222timers_reify (EV_P)
1223{
1224 while (timercnt && ((WT)timers [0])->at <= mn_now)
1225 {
1226 ev_timer *w = (ev_timer *)timers [0];
1227
1228 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1229
1230 /* first reschedule or stop timer */
1231 if (w->repeat)
1232 {
1233 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1234
1235 ((WT)w)->at += w->repeat;
1236 if (((WT)w)->at < mn_now)
1237 ((WT)w)->at = mn_now;
1238
1239 downheap (timers, timercnt, 0);
1240 }
1241 else
1242 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1243
1244 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1245 }
1246}
1247
1248#if EV_PERIODIC_ENABLE
1249void inline_size
1250periodics_reify (EV_P)
1251{
1252 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1253 {
1254 ev_periodic *w = (ev_periodic *)periodics [0];
1255
1256 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1257
1258 /* first reschedule or stop timer */
1259 if (w->reschedule_cb)
1260 {
1261 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1262 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1263 downheap (periodics, periodiccnt, 0);
1264 }
1265 else if (w->interval)
1266 {
1267 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1268 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1269 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1270 downheap (periodics, periodiccnt, 0);
1271 }
1272 else
1273 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1274
1275 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1276 }
1277}
1278
1279static void noinline
1280periodics_reschedule (EV_P)
1281{
1282 int i;
1283
1284 /* adjust periodics after time jump */
1285 for (i = 0; i < periodiccnt; ++i)
1286 {
1287 ev_periodic *w = (ev_periodic *)periodics [i];
1288
1289 if (w->reschedule_cb)
1290 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1291 else if (w->interval)
1292 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1293 }
1294
1295 /* now rebuild the heap */
1296 for (i = periodiccnt >> 1; i--; )
1297 downheap (periodics, periodiccnt, i);
1298}
1299#endif
1300 1745
1301#if EV_IDLE_ENABLE 1746#if EV_IDLE_ENABLE
1302void inline_size 1747void inline_size
1303idle_reify (EV_P) 1748idle_reify (EV_P)
1304{ 1749{
… …
1316 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); 1761 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1317 break; 1762 break;
1318 } 1763 }
1319 } 1764 }
1320 } 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);
1321} 1868}
1322#endif 1869#endif
1323 1870
1324void inline_speed 1871void inline_speed
1325time_update (EV_P_ ev_tstamp max_block) 1872time_update (EV_P_ ev_tstamp max_block)
… …
1354 */ 1901 */
1355 for (i = 4; --i; ) 1902 for (i = 4; --i; )
1356 { 1903 {
1357 rtmn_diff = ev_rt_now - mn_now; 1904 rtmn_diff = ev_rt_now - mn_now;
1358 1905
1359 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1906 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1360 return; /* all is well */ 1907 return; /* all is well */
1361 1908
1362 ev_rt_now = ev_time (); 1909 ev_rt_now = ev_time ();
1363 mn_now = get_clock (); 1910 mn_now = get_clock ();
1364 now_floor = mn_now; 1911 now_floor = mn_now;
… …
1380#if EV_PERIODIC_ENABLE 1927#if EV_PERIODIC_ENABLE
1381 periodics_reschedule (EV_A); 1928 periodics_reschedule (EV_A);
1382#endif 1929#endif
1383 /* 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 */
1384 for (i = 0; i < timercnt; ++i) 1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1385 ((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 }
1386 } 1937 }
1387 1938
1388 mn_now = ev_rt_now; 1939 mn_now = ev_rt_now;
1389 } 1940 }
1390} 1941}
… …
1399ev_unref (EV_P) 1950ev_unref (EV_P)
1400{ 1951{
1401 --activecnt; 1952 --activecnt;
1402} 1953}
1403 1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1404static int loop_done; 1961static int loop_done;
1405 1962
1406void 1963void
1407ev_loop (EV_P_ int flags) 1964ev_loop (EV_P_ int flags)
1408{ 1965{
1409 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1966 loop_done = EVUNLOOP_CANCEL;
1410 ? EVUNLOOP_ONE
1411 : EVUNLOOP_CANCEL;
1412 1967
1413 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 */
1414 1969
1415 do 1970 do
1416 { 1971 {
1972#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A);
1974#endif
1975
1417#ifndef _WIN32 1976#ifndef _WIN32
1418 if (expect_false (curpid)) /* penalise the forking check even more */ 1977 if (expect_false (curpid)) /* penalise the forking check even more */
1419 if (expect_false (getpid () != curpid)) 1978 if (expect_false (getpid () != curpid))
1420 { 1979 {
1421 curpid = getpid (); 1980 curpid = getpid ();
… …
1450 /* update fd-related kernel structures */ 2009 /* update fd-related kernel structures */
1451 fd_reify (EV_A); 2010 fd_reify (EV_A);
1452 2011
1453 /* calculate blocking time */ 2012 /* calculate blocking time */
1454 { 2013 {
1455 ev_tstamp block; 2014 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.;
1456 2016
1457 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1458 block = 0.; /* do not block at all */
1459 else
1460 { 2018 {
1461 /* update time to cancel out callback processing overhead */ 2019 /* update time to cancel out callback processing overhead */
1462 time_update (EV_A_ 1e100); 2020 time_update (EV_A_ 1e100);
1463 2021
1464 block = MAX_BLOCKTIME; 2022 waittime = MAX_BLOCKTIME;
1465 2023
1466 if (timercnt) 2024 if (timercnt)
1467 { 2025 {
1468 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2026 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1469 if (block > to) block = to; 2027 if (waittime > to) waittime = to;
1470 } 2028 }
1471 2029
1472#if EV_PERIODIC_ENABLE 2030#if EV_PERIODIC_ENABLE
1473 if (periodiccnt) 2031 if (periodiccnt)
1474 { 2032 {
1475 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;
1476 if (block > to) block = to; 2034 if (waittime > to) waittime = to;
1477 } 2035 }
1478#endif 2036#endif
1479 2037
1480 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 }
1481 } 2051 }
1482 2052
1483 ++loop_count; 2053 ++loop_count;
1484 backend_poll (EV_A_ block); 2054 backend_poll (EV_A_ waittime);
1485 2055
1486 /* update ev_rt_now, do magic */ 2056 /* update ev_rt_now, do magic */
1487 time_update (EV_A_ block); 2057 time_update (EV_A_ waittime + sleeptime);
1488 } 2058 }
1489 2059
1490 /* queue pending timers and reschedule them */ 2060 /* queue pending timers and reschedule them */
1491 timers_reify (EV_A); /* relative timers called last */ 2061 timers_reify (EV_A); /* relative timers called last */
1492#if EV_PERIODIC_ENABLE 2062#if EV_PERIODIC_ENABLE
… …
1501 /* queue check watchers, to be executed first */ 2071 /* queue check watchers, to be executed first */
1502 if (expect_false (checkcnt)) 2072 if (expect_false (checkcnt))
1503 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1504 2074
1505 call_pending (EV_A); 2075 call_pending (EV_A);
1506
1507 } 2076 }
1508 while (expect_true (activecnt && !loop_done)); 2077 while (expect_true (
2078 activecnt
2079 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081 ));
1509 2082
1510 if (loop_done == EVUNLOOP_ONE) 2083 if (loop_done == EVUNLOOP_ONE)
1511 loop_done = EVUNLOOP_CANCEL; 2084 loop_done = EVUNLOOP_CANCEL;
1512} 2085}
1513 2086
… …
1600 int fd = w->fd; 2173 int fd = w->fd;
1601 2174
1602 if (expect_false (ev_is_active (w))) 2175 if (expect_false (ev_is_active (w)))
1603 return; 2176 return;
1604 2177
1605 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;
1606 2182
1607 ev_start (EV_A_ (W)w, 1); 2183 ev_start (EV_A_ (W)w, 1);
1608 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1609 wlist_add (&anfds[fd].head, (WL)w); 2185 wlist_add (&anfds[fd].head, (WL)w);
1610 2186
1611 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2187 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1612 w->events &= ~EV_IOFDSET; 2188 w->events &= ~EV__IOFDSET;
2189
2190 EV_FREQUENT_CHECK;
1613} 2191}
1614 2192
1615void noinline 2193void noinline
1616ev_io_stop (EV_P_ ev_io *w) 2194ev_io_stop (EV_P_ ev_io *w)
1617{ 2195{
1618 clear_pending (EV_A_ (W)w); 2196 clear_pending (EV_A_ (W)w);
1619 if (expect_false (!ev_is_active (w))) 2197 if (expect_false (!ev_is_active (w)))
1620 return; 2198 return;
1621 2199
1622 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));
2201
2202 EV_FREQUENT_CHECK;
1623 2203
1624 wlist_del (&anfds[w->fd].head, (WL)w); 2204 wlist_del (&anfds[w->fd].head, (WL)w);
1625 ev_stop (EV_A_ (W)w); 2205 ev_stop (EV_A_ (W)w);
1626 2206
1627 fd_change (EV_A_ w->fd, 1); 2207 fd_change (EV_A_ w->fd, 1);
2208
2209 EV_FREQUENT_CHECK;
1628} 2210}
1629 2211
1630void noinline 2212void noinline
1631ev_timer_start (EV_P_ ev_timer *w) 2213ev_timer_start (EV_P_ ev_timer *w)
1632{ 2214{
1633 if (expect_false (ev_is_active (w))) 2215 if (expect_false (ev_is_active (w)))
1634 return; 2216 return;
1635 2217
1636 ((WT)w)->at += mn_now; 2218 ev_at (w) += mn_now;
1637 2219
1638 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.));
1639 2221
2222 EV_FREQUENT_CHECK;
2223
2224 ++timercnt;
1640 ev_start (EV_A_ (W)w, ++timercnt); 2225 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1641 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2226 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1642 timers [timercnt - 1] = (WT)w; 2227 ANHE_w (timers [ev_active (w)]) = (WT)w;
1643 upheap (timers, timercnt - 1); 2228 ANHE_at_cache (timers [ev_active (w)]);
2229 upheap (timers, ev_active (w));
1644 2230
2231 EV_FREQUENT_CHECK;
2232
1645 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2233 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1646} 2234}
1647 2235
1648void noinline 2236void noinline
1649ev_timer_stop (EV_P_ ev_timer *w) 2237ev_timer_stop (EV_P_ ev_timer *w)
1650{ 2238{
1651 clear_pending (EV_A_ (W)w); 2239 clear_pending (EV_A_ (W)w);
1652 if (expect_false (!ev_is_active (w))) 2240 if (expect_false (!ev_is_active (w)))
1653 return; 2241 return;
1654 2242
1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2243 EV_FREQUENT_CHECK;
1656 2244
1657 { 2245 {
1658 int active = ((W)w)->active; 2246 int active = ev_active (w);
1659 2247
2248 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2249
2250 --timercnt;
2251
1660 if (expect_true (--active < --timercnt)) 2252 if (expect_true (active < timercnt + HEAP0))
1661 { 2253 {
1662 timers [active] = timers [timercnt]; 2254 timers [active] = timers [timercnt + HEAP0];
1663 adjustheap (timers, timercnt, active); 2255 adjustheap (timers, timercnt, active);
1664 } 2256 }
1665 } 2257 }
1666 2258
1667 ((WT)w)->at -= mn_now; 2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now;
1668 2262
1669 ev_stop (EV_A_ (W)w); 2263 ev_stop (EV_A_ (W)w);
1670} 2264}
1671 2265
1672void noinline 2266void noinline
1673ev_timer_again (EV_P_ ev_timer *w) 2267ev_timer_again (EV_P_ ev_timer *w)
1674{ 2268{
2269 EV_FREQUENT_CHECK;
2270
1675 if (ev_is_active (w)) 2271 if (ev_is_active (w))
1676 { 2272 {
1677 if (w->repeat) 2273 if (w->repeat)
1678 { 2274 {
1679 ((WT)w)->at = mn_now + w->repeat; 2275 ev_at (w) = mn_now + w->repeat;
2276 ANHE_at_cache (timers [ev_active (w)]);
1680 adjustheap (timers, timercnt, ((W)w)->active - 1); 2277 adjustheap (timers, timercnt, ev_active (w));
1681 } 2278 }
1682 else 2279 else
1683 ev_timer_stop (EV_A_ w); 2280 ev_timer_stop (EV_A_ w);
1684 } 2281 }
1685 else if (w->repeat) 2282 else if (w->repeat)
1686 { 2283 {
1687 w->at = w->repeat; 2284 ev_at (w) = w->repeat;
1688 ev_timer_start (EV_A_ w); 2285 ev_timer_start (EV_A_ w);
1689 } 2286 }
2287
2288 EV_FREQUENT_CHECK;
1690} 2289}
1691 2290
1692#if EV_PERIODIC_ENABLE 2291#if EV_PERIODIC_ENABLE
1693void noinline 2292void noinline
1694ev_periodic_start (EV_P_ ev_periodic *w) 2293ev_periodic_start (EV_P_ ev_periodic *w)
1695{ 2294{
1696 if (expect_false (ev_is_active (w))) 2295 if (expect_false (ev_is_active (w)))
1697 return; 2296 return;
1698 2297
1699 if (w->reschedule_cb) 2298 if (w->reschedule_cb)
1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1701 else if (w->interval) 2300 else if (w->interval)
1702 { 2301 {
1703 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.));
1704 /* 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 */
1705 ((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;
1706 } 2305 }
1707 else 2306 else
1708 ((WT)w)->at = w->offset; 2307 ev_at (w) = w->offset;
1709 2308
2309 EV_FREQUENT_CHECK;
2310
2311 ++periodiccnt;
1710 ev_start (EV_A_ (W)w, ++periodiccnt); 2312 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1711 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2313 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1712 periodics [periodiccnt - 1] = (WT)w; 2314 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1713 upheap (periodics, periodiccnt - 1); 2315 ANHE_at_cache (periodics [ev_active (w)]);
2316 upheap (periodics, ev_active (w));
1714 2317
2318 EV_FREQUENT_CHECK;
2319
1715 /*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));*/
1716} 2321}
1717 2322
1718void noinline 2323void noinline
1719ev_periodic_stop (EV_P_ ev_periodic *w) 2324ev_periodic_stop (EV_P_ ev_periodic *w)
1720{ 2325{
1721 clear_pending (EV_A_ (W)w); 2326 clear_pending (EV_A_ (W)w);
1722 if (expect_false (!ev_is_active (w))) 2327 if (expect_false (!ev_is_active (w)))
1723 return; 2328 return;
1724 2329
1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2330 EV_FREQUENT_CHECK;
1726 2331
1727 { 2332 {
1728 int active = ((W)w)->active; 2333 int active = ev_active (w);
1729 2334
2335 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2336
2337 --periodiccnt;
2338
1730 if (expect_true (--active < --periodiccnt)) 2339 if (expect_true (active < periodiccnt + HEAP0))
1731 { 2340 {
1732 periodics [active] = periodics [periodiccnt]; 2341 periodics [active] = periodics [periodiccnt + HEAP0];
1733 adjustheap (periodics, periodiccnt, active); 2342 adjustheap (periodics, periodiccnt, active);
1734 } 2343 }
1735 } 2344 }
1736 2345
2346 EV_FREQUENT_CHECK;
2347
1737 ev_stop (EV_A_ (W)w); 2348 ev_stop (EV_A_ (W)w);
1738} 2349}
1739 2350
1740void noinline 2351void noinline
1741ev_periodic_again (EV_P_ ev_periodic *w) 2352ev_periodic_again (EV_P_ ev_periodic *w)
… …
1752 2363
1753void noinline 2364void noinline
1754ev_signal_start (EV_P_ ev_signal *w) 2365ev_signal_start (EV_P_ ev_signal *w)
1755{ 2366{
1756#if EV_MULTIPLICITY 2367#if EV_MULTIPLICITY
1757 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));
1758#endif 2369#endif
1759 if (expect_false (ev_is_active (w))) 2370 if (expect_false (ev_is_active (w)))
1760 return; 2371 return;
1761 2372
1762 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;
1763 2378
1764 { 2379 {
1765#ifndef _WIN32 2380#ifndef _WIN32
1766 sigset_t full, prev; 2381 sigset_t full, prev;
1767 sigfillset (&full); 2382 sigfillset (&full);
1768 sigprocmask (SIG_SETMASK, &full, &prev); 2383 sigprocmask (SIG_SETMASK, &full, &prev);
1769#endif 2384#endif
1770 2385
1771 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1772 2387
1773#ifndef _WIN32 2388#ifndef _WIN32
1774 sigprocmask (SIG_SETMASK, &prev, 0); 2389 sigprocmask (SIG_SETMASK, &prev, 0);
1775#endif 2390#endif
1776 } 2391 }
… …
1779 wlist_add (&signals [w->signum - 1].head, (WL)w); 2394 wlist_add (&signals [w->signum - 1].head, (WL)w);
1780 2395
1781 if (!((WL)w)->next) 2396 if (!((WL)w)->next)
1782 { 2397 {
1783#if _WIN32 2398#if _WIN32
1784 signal (w->signum, sighandler); 2399 signal (w->signum, ev_sighandler);
1785#else 2400#else
1786 struct sigaction sa; 2401 struct sigaction sa;
1787 sa.sa_handler = sighandler; 2402 sa.sa_handler = ev_sighandler;
1788 sigfillset (&sa.sa_mask); 2403 sigfillset (&sa.sa_mask);
1789 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 */
1790 sigaction (w->signum, &sa, 0); 2405 sigaction (w->signum, &sa, 0);
1791#endif 2406#endif
1792 } 2407 }
2408
2409 EV_FREQUENT_CHECK;
1793} 2410}
1794 2411
1795void noinline 2412void noinline
1796ev_signal_stop (EV_P_ ev_signal *w) 2413ev_signal_stop (EV_P_ ev_signal *w)
1797{ 2414{
1798 clear_pending (EV_A_ (W)w); 2415 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w))) 2416 if (expect_false (!ev_is_active (w)))
1800 return; 2417 return;
1801 2418
2419 EV_FREQUENT_CHECK;
2420
1802 wlist_del (&signals [w->signum - 1].head, (WL)w); 2421 wlist_del (&signals [w->signum - 1].head, (WL)w);
1803 ev_stop (EV_A_ (W)w); 2422 ev_stop (EV_A_ (W)w);
1804 2423
1805 if (!signals [w->signum - 1].head) 2424 if (!signals [w->signum - 1].head)
1806 signal (w->signum, SIG_DFL); 2425 signal (w->signum, SIG_DFL);
2426
2427 EV_FREQUENT_CHECK;
1807} 2428}
1808 2429
1809void 2430void
1810ev_child_start (EV_P_ ev_child *w) 2431ev_child_start (EV_P_ ev_child *w)
1811{ 2432{
1812#if EV_MULTIPLICITY 2433#if EV_MULTIPLICITY
1813 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));
1814#endif 2435#endif
1815 if (expect_false (ev_is_active (w))) 2436 if (expect_false (ev_is_active (w)))
1816 return; 2437 return;
1817 2438
2439 EV_FREQUENT_CHECK;
2440
1818 ev_start (EV_A_ (W)w, 1); 2441 ev_start (EV_A_ (W)w, 1);
1819 wlist_add (&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;
1820} 2445}
1821 2446
1822void 2447void
1823ev_child_stop (EV_P_ ev_child *w) 2448ev_child_stop (EV_P_ ev_child *w)
1824{ 2449{
1825 clear_pending (EV_A_ (W)w); 2450 clear_pending (EV_A_ (W)w);
1826 if (expect_false (!ev_is_active (w))) 2451 if (expect_false (!ev_is_active (w)))
1827 return; 2452 return;
1828 2453
2454 EV_FREQUENT_CHECK;
2455
1829 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1830 ev_stop (EV_A_ (W)w); 2457 ev_stop (EV_A_ (W)w);
2458
2459 EV_FREQUENT_CHECK;
1831} 2460}
1832 2461
1833#if EV_STAT_ENABLE 2462#if EV_STAT_ENABLE
1834 2463
1835# ifdef _WIN32 2464# ifdef _WIN32
1836# undef lstat 2465# undef lstat
1837# define lstat(a,b) _stati64 (a,b) 2466# define lstat(a,b) _stati64 (a,b)
1838# endif 2467# endif
1839 2468
1840#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 */
1841#define MIN_STAT_INTERVAL 0.1074891 2471#define MIN_STAT_INTERVAL 0.1074891
1842 2472
1843static 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);
1844 2474
1845#if EV_USE_INOTIFY 2475#if EV_USE_INOTIFY
1846# define EV_INOTIFY_BUFSIZE 8192 2476# define EV_INOTIFY_BUFSIZE 8192
… …
1850{ 2480{
1851 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);
1852 2482
1853 if (w->wd < 0) 2483 if (w->wd < 0)
1854 { 2484 {
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1855 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 */
1856 2487
1857 /* 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 */
1858 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1859 { 2492 {
1860 char path [4096]; 2493 char path [4096];
1861 strcpy (path, w->path); 2494 strcpy (path, w->path);
1862 2495
… …
1865 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2498 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1866 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2499 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1867 2500
1868 char *pend = strrchr (path, '/'); 2501 char *pend = strrchr (path, '/');
1869 2502
1870 if (!pend) 2503 if (!pend || pend == path)
1871 break; /* whoops, no '/', complain to your admin */ 2504 break;
1872 2505
1873 *pend = 0; 2506 *pend = 0;
1874 w->wd = inotify_add_watch (fs_fd, path, mask); 2507 w->wd = inotify_add_watch (fs_fd, path, mask);
1875 } 2508 }
1876 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1877 } 2510 }
1878 } 2511 }
1879 else
1880 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1881 2512
1882 if (w->wd >= 0) 2513 if (w->wd >= 0)
2514 {
1883 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 }
1884} 2534}
1885 2535
1886static void noinline 2536static void noinline
1887infy_del (EV_P_ ev_stat *w) 2537infy_del (EV_P_ ev_stat *w)
1888{ 2538{
… …
1902 2552
1903static void noinline 2553static void noinline
1904infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1905{ 2555{
1906 if (slot < 0) 2556 if (slot < 0)
1907 /* overflow, need to check for all hahs slots */ 2557 /* overflow, need to check for all hash slots */
1908 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1909 infy_wd (EV_A_ slot, wd, ev); 2559 infy_wd (EV_A_ slot, wd, ev);
1910 else 2560 else
1911 { 2561 {
1912 WL w_; 2562 WL w_;
… …
1918 2568
1919 if (w->wd == wd || wd == -1) 2569 if (w->wd == wd || wd == -1)
1920 { 2570 {
1921 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1922 { 2572 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1923 w->wd = -1; 2574 w->wd = -1;
1924 infy_add (EV_A_ w); /* re-add, no matter what */ 2575 infy_add (EV_A_ w); /* re-add, no matter what */
1925 } 2576 }
1926 2577
1927 stat_timer_cb (EV_A_ &w->timer, 0); 2578 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1941 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)
1942 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2593 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1943} 2594}
1944 2595
1945void 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
1946infy_init (EV_P) 2620infy_init (EV_P)
1947{ 2621{
1948 if (fs_fd != -2) 2622 if (fs_fd != -2)
1949 return; 2623 return;
2624
2625 fs_fd = -1;
2626
2627 check_2625 (EV_A);
1950 2628
1951 fs_fd = inotify_init (); 2629 fs_fd = inotify_init ();
1952 2630
1953 if (fs_fd >= 0) 2631 if (fs_fd >= 0)
1954 { 2632 {
… …
1982 w->wd = -1; 2660 w->wd = -1;
1983 2661
1984 if (fs_fd >= 0) 2662 if (fs_fd >= 0)
1985 infy_add (EV_A_ w); /* re-add, no matter what */ 2663 infy_add (EV_A_ w); /* re-add, no matter what */
1986 else 2664 else
1987 ev_timer_start (EV_A_ &w->timer); 2665 ev_timer_again (EV_A_ &w->timer);
1988 } 2666 }
1989
1990 } 2667 }
1991} 2668}
1992 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)
1993#endif 2676#endif
1994 2677
1995void 2678void
1996ev_stat_stat (EV_P_ ev_stat *w) 2679ev_stat_stat (EV_P_ ev_stat *w)
1997{ 2680{
… …
2024 || w->prev.st_atime != w->attr.st_atime 2707 || w->prev.st_atime != w->attr.st_atime
2025 || w->prev.st_mtime != w->attr.st_mtime 2708 || w->prev.st_mtime != w->attr.st_mtime
2026 || w->prev.st_ctime != w->attr.st_ctime 2709 || w->prev.st_ctime != w->attr.st_ctime
2027 ) { 2710 ) {
2028 #if EV_USE_INOTIFY 2711 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0)
2713 {
2029 infy_del (EV_A_ w); 2714 infy_del (EV_A_ w);
2030 infy_add (EV_A_ w); 2715 infy_add (EV_A_ w);
2031 ev_stat_stat (EV_A_ w); /* avoid race... */ 2716 ev_stat_stat (EV_A_ w); /* avoid race... */
2717 }
2032 #endif 2718 #endif
2033 2719
2034 ev_feed_event (EV_A_ w, EV_STAT); 2720 ev_feed_event (EV_A_ w, EV_STAT);
2035 } 2721 }
2036} 2722}
… …
2039ev_stat_start (EV_P_ ev_stat *w) 2725ev_stat_start (EV_P_ ev_stat *w)
2040{ 2726{
2041 if (expect_false (ev_is_active (w))) 2727 if (expect_false (ev_is_active (w)))
2042 return; 2728 return;
2043 2729
2044 /* since we use memcmp, we need to clear any padding data etc. */
2045 memset (&w->prev, 0, sizeof (ev_statdata));
2046 memset (&w->attr, 0, sizeof (ev_statdata));
2047
2048 ev_stat_stat (EV_A_ w); 2730 ev_stat_stat (EV_A_ w);
2049 2731
2732 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2050 if (w->interval < MIN_STAT_INTERVAL) 2733 w->interval = MIN_STAT_INTERVAL;
2051 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2052 2734
2053 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);
2054 ev_set_priority (&w->timer, ev_priority (w)); 2736 ev_set_priority (&w->timer, ev_priority (w));
2055 2737
2056#if EV_USE_INOTIFY 2738#if EV_USE_INOTIFY
2057 infy_init (EV_A); 2739 infy_init (EV_A);
2058 2740
2059 if (fs_fd >= 0) 2741 if (fs_fd >= 0)
2060 infy_add (EV_A_ w); 2742 infy_add (EV_A_ w);
2061 else 2743 else
2062#endif 2744#endif
2063 ev_timer_start (EV_A_ &w->timer); 2745 ev_timer_again (EV_A_ &w->timer);
2064 2746
2065 ev_start (EV_A_ (W)w, 1); 2747 ev_start (EV_A_ (W)w, 1);
2748
2749 EV_FREQUENT_CHECK;
2066} 2750}
2067 2751
2068void 2752void
2069ev_stat_stop (EV_P_ ev_stat *w) 2753ev_stat_stop (EV_P_ ev_stat *w)
2070{ 2754{
2071 clear_pending (EV_A_ (W)w); 2755 clear_pending (EV_A_ (W)w);
2072 if (expect_false (!ev_is_active (w))) 2756 if (expect_false (!ev_is_active (w)))
2073 return; 2757 return;
2074 2758
2759 EV_FREQUENT_CHECK;
2760
2075#if EV_USE_INOTIFY 2761#if EV_USE_INOTIFY
2076 infy_del (EV_A_ w); 2762 infy_del (EV_A_ w);
2077#endif 2763#endif
2078 ev_timer_stop (EV_A_ &w->timer); 2764 ev_timer_stop (EV_A_ &w->timer);
2079 2765
2080 ev_stop (EV_A_ (W)w); 2766 ev_stop (EV_A_ (W)w);
2767
2768 EV_FREQUENT_CHECK;
2081} 2769}
2082#endif 2770#endif
2083 2771
2084#if EV_IDLE_ENABLE 2772#if EV_IDLE_ENABLE
2085void 2773void
… …
2087{ 2775{
2088 if (expect_false (ev_is_active (w))) 2776 if (expect_false (ev_is_active (w)))
2089 return; 2777 return;
2090 2778
2091 pri_adjust (EV_A_ (W)w); 2779 pri_adjust (EV_A_ (W)w);
2780
2781 EV_FREQUENT_CHECK;
2092 2782
2093 { 2783 {
2094 int active = ++idlecnt [ABSPRI (w)]; 2784 int active = ++idlecnt [ABSPRI (w)];
2095 2785
2096 ++idleall; 2786 ++idleall;
2097 ev_start (EV_A_ (W)w, active); 2787 ev_start (EV_A_ (W)w, active);
2098 2788
2099 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);
2100 idles [ABSPRI (w)][active - 1] = w; 2790 idles [ABSPRI (w)][active - 1] = w;
2101 } 2791 }
2792
2793 EV_FREQUENT_CHECK;
2102} 2794}
2103 2795
2104void 2796void
2105ev_idle_stop (EV_P_ ev_idle *w) 2797ev_idle_stop (EV_P_ ev_idle *w)
2106{ 2798{
2107 clear_pending (EV_A_ (W)w); 2799 clear_pending (EV_A_ (W)w);
2108 if (expect_false (!ev_is_active (w))) 2800 if (expect_false (!ev_is_active (w)))
2109 return; 2801 return;
2110 2802
2803 EV_FREQUENT_CHECK;
2804
2111 { 2805 {
2112 int active = ((W)w)->active; 2806 int active = ev_active (w);
2113 2807
2114 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2808 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2115 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2809 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2116 2810
2117 ev_stop (EV_A_ (W)w); 2811 ev_stop (EV_A_ (W)w);
2118 --idleall; 2812 --idleall;
2119 } 2813 }
2814
2815 EV_FREQUENT_CHECK;
2120} 2816}
2121#endif 2817#endif
2122 2818
2123void 2819void
2124ev_prepare_start (EV_P_ ev_prepare *w) 2820ev_prepare_start (EV_P_ ev_prepare *w)
2125{ 2821{
2126 if (expect_false (ev_is_active (w))) 2822 if (expect_false (ev_is_active (w)))
2127 return; 2823 return;
2824
2825 EV_FREQUENT_CHECK;
2128 2826
2129 ev_start (EV_A_ (W)w, ++preparecnt); 2827 ev_start (EV_A_ (W)w, ++preparecnt);
2130 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2828 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2131 prepares [preparecnt - 1] = w; 2829 prepares [preparecnt - 1] = w;
2830
2831 EV_FREQUENT_CHECK;
2132} 2832}
2133 2833
2134void 2834void
2135ev_prepare_stop (EV_P_ ev_prepare *w) 2835ev_prepare_stop (EV_P_ ev_prepare *w)
2136{ 2836{
2137 clear_pending (EV_A_ (W)w); 2837 clear_pending (EV_A_ (W)w);
2138 if (expect_false (!ev_is_active (w))) 2838 if (expect_false (!ev_is_active (w)))
2139 return; 2839 return;
2140 2840
2841 EV_FREQUENT_CHECK;
2842
2141 { 2843 {
2142 int active = ((W)w)->active; 2844 int active = ev_active (w);
2845
2143 prepares [active - 1] = prepares [--preparecnt]; 2846 prepares [active - 1] = prepares [--preparecnt];
2144 ((W)prepares [active - 1])->active = active; 2847 ev_active (prepares [active - 1]) = active;
2145 } 2848 }
2146 2849
2147 ev_stop (EV_A_ (W)w); 2850 ev_stop (EV_A_ (W)w);
2851
2852 EV_FREQUENT_CHECK;
2148} 2853}
2149 2854
2150void 2855void
2151ev_check_start (EV_P_ ev_check *w) 2856ev_check_start (EV_P_ ev_check *w)
2152{ 2857{
2153 if (expect_false (ev_is_active (w))) 2858 if (expect_false (ev_is_active (w)))
2154 return; 2859 return;
2860
2861 EV_FREQUENT_CHECK;
2155 2862
2156 ev_start (EV_A_ (W)w, ++checkcnt); 2863 ev_start (EV_A_ (W)w, ++checkcnt);
2157 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2864 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2158 checks [checkcnt - 1] = w; 2865 checks [checkcnt - 1] = w;
2866
2867 EV_FREQUENT_CHECK;
2159} 2868}
2160 2869
2161void 2870void
2162ev_check_stop (EV_P_ ev_check *w) 2871ev_check_stop (EV_P_ ev_check *w)
2163{ 2872{
2164 clear_pending (EV_A_ (W)w); 2873 clear_pending (EV_A_ (W)w);
2165 if (expect_false (!ev_is_active (w))) 2874 if (expect_false (!ev_is_active (w)))
2166 return; 2875 return;
2167 2876
2877 EV_FREQUENT_CHECK;
2878
2168 { 2879 {
2169 int active = ((W)w)->active; 2880 int active = ev_active (w);
2881
2170 checks [active - 1] = checks [--checkcnt]; 2882 checks [active - 1] = checks [--checkcnt];
2171 ((W)checks [active - 1])->active = active; 2883 ev_active (checks [active - 1]) = active;
2172 } 2884 }
2173 2885
2174 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2175} 2889}
2176 2890
2177#if EV_EMBED_ENABLE 2891#if EV_EMBED_ENABLE
2178void noinline 2892void noinline
2179ev_embed_sweep (EV_P_ ev_embed *w) 2893ev_embed_sweep (EV_P_ ev_embed *w)
2180{ 2894{
2181 ev_loop (w->loop, EVLOOP_NONBLOCK); 2895 ev_loop (w->other, EVLOOP_NONBLOCK);
2182} 2896}
2183 2897
2184static void 2898static void
2185embed_cb (EV_P_ ev_io *io, int revents) 2899embed_io_cb (EV_P_ ev_io *io, int revents)
2186{ 2900{
2187 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2901 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2188 2902
2189 if (ev_cb (w)) 2903 if (ev_cb (w))
2190 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2904 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191 else 2905 else
2192 ev_embed_sweep (loop, w); 2906 ev_loop (w->other, EVLOOP_NONBLOCK);
2193} 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
2194 2949
2195void 2950void
2196ev_embed_start (EV_P_ ev_embed *w) 2951ev_embed_start (EV_P_ ev_embed *w)
2197{ 2952{
2198 if (expect_false (ev_is_active (w))) 2953 if (expect_false (ev_is_active (w)))
2199 return; 2954 return;
2200 2955
2201 { 2956 {
2202 struct ev_loop *loop = w->loop; 2957 struct ev_loop *loop = w->other;
2203 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 ()));
2204 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2205 } 2960 }
2961
2962 EV_FREQUENT_CHECK;
2206 2963
2207 ev_set_priority (&w->io, ev_priority (w)); 2964 ev_set_priority (&w->io, ev_priority (w));
2208 ev_io_start (EV_A_ &w->io); 2965 ev_io_start (EV_A_ &w->io);
2209 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
2210 ev_start (EV_A_ (W)w, 1); 2976 ev_start (EV_A_ (W)w, 1);
2977
2978 EV_FREQUENT_CHECK;
2211} 2979}
2212 2980
2213void 2981void
2214ev_embed_stop (EV_P_ ev_embed *w) 2982ev_embed_stop (EV_P_ ev_embed *w)
2215{ 2983{
2216 clear_pending (EV_A_ (W)w); 2984 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w))) 2985 if (expect_false (!ev_is_active (w)))
2218 return; 2986 return;
2219 2987
2988 EV_FREQUENT_CHECK;
2989
2220 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);
2221 2993
2222 ev_stop (EV_A_ (W)w); 2994 EV_FREQUENT_CHECK;
2223} 2995}
2224#endif 2996#endif
2225 2997
2226#if EV_FORK_ENABLE 2998#if EV_FORK_ENABLE
2227void 2999void
2228ev_fork_start (EV_P_ ev_fork *w) 3000ev_fork_start (EV_P_ ev_fork *w)
2229{ 3001{
2230 if (expect_false (ev_is_active (w))) 3002 if (expect_false (ev_is_active (w)))
2231 return; 3003 return;
3004
3005 EV_FREQUENT_CHECK;
2232 3006
2233 ev_start (EV_A_ (W)w, ++forkcnt); 3007 ev_start (EV_A_ (W)w, ++forkcnt);
2234 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3008 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2235 forks [forkcnt - 1] = w; 3009 forks [forkcnt - 1] = w;
3010
3011 EV_FREQUENT_CHECK;
2236} 3012}
2237 3013
2238void 3014void
2239ev_fork_stop (EV_P_ ev_fork *w) 3015ev_fork_stop (EV_P_ ev_fork *w)
2240{ 3016{
2241 clear_pending (EV_A_ (W)w); 3017 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w))) 3018 if (expect_false (!ev_is_active (w)))
2243 return; 3019 return;
2244 3020
3021 EV_FREQUENT_CHECK;
3022
2245 { 3023 {
2246 int active = ((W)w)->active; 3024 int active = ev_active (w);
3025
2247 forks [active - 1] = forks [--forkcnt]; 3026 forks [active - 1] = forks [--forkcnt];
2248 ((W)forks [active - 1])->active = active; 3027 ev_active (forks [active - 1]) = active;
2249 } 3028 }
2250 3029
2251 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);
2252} 3080}
2253#endif 3081#endif
2254 3082
2255/*****************************************************************************/ 3083/*****************************************************************************/
2256 3084
… …
2266once_cb (EV_P_ struct ev_once *once, int revents) 3094once_cb (EV_P_ struct ev_once *once, int revents)
2267{ 3095{
2268 void (*cb)(int revents, void *arg) = once->cb; 3096 void (*cb)(int revents, void *arg) = once->cb;
2269 void *arg = once->arg; 3097 void *arg = once->arg;
2270 3098
2271 ev_io_stop (EV_A_ &once->io); 3099 ev_io_stop (EV_A_ &once->io);
2272 ev_timer_stop (EV_A_ &once->to); 3100 ev_timer_stop (EV_A_ &once->to);
2273 ev_free (once); 3101 ev_free (once);
2274 3102
2275 cb (revents, arg); 3103 cb (revents, arg);
2276} 3104}
2277 3105
2278static void 3106static void
2279once_cb_io (EV_P_ ev_io *w, int revents) 3107once_cb_io (EV_P_ ev_io *w, int revents)
2280{ 3108{
2281 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));
2282} 3112}
2283 3113
2284static void 3114static void
2285once_cb_to (EV_P_ ev_timer *w, int revents) 3115once_cb_to (EV_P_ ev_timer *w, int revents)
2286{ 3116{
2287 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));
2288} 3120}
2289 3121
2290void 3122void
2291ev_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)
2292{ 3124{
… …
2314 ev_timer_set (&once->to, timeout, 0.); 3146 ev_timer_set (&once->to, timeout, 0.);
2315 ev_timer_start (EV_A_ &once->to); 3147 ev_timer_start (EV_A_ &once->to);
2316 } 3148 }
2317} 3149}
2318 3150
3151#if EV_MULTIPLICITY
3152 #include "ev_wrap.h"
3153#endif
3154
2319#ifdef __cplusplus 3155#ifdef __cplusplus
2320} 3156}
2321#endif 3157#endif
2322 3158

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