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Comparing libev/ev.c (file contents):
Revision 1.181 by root, Wed Dec 12 00:17:08 2007 UTC vs.
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
… …
51# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
53# endif 62# endif
54# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 64# define EV_USE_REALTIME 0
65# endif
66# endif
67
68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
56# endif 73# endif
57# endif 74# endif
58 75
59# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 119# else
103# define EV_USE_INOTIFY 0 120# define EV_USE_INOTIFY 0
104# endif 121# endif
105# endif 122# endif
106 123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
107#endif 132#endif
108 133
109#include <math.h> 134#include <math.h>
110#include <stdlib.h> 135#include <stdlib.h>
111#include <fcntl.h> 136#include <fcntl.h>
… …
129#ifndef _WIN32 154#ifndef _WIN32
130# include <sys/time.h> 155# include <sys/time.h>
131# include <sys/wait.h> 156# include <sys/wait.h>
132# include <unistd.h> 157# include <unistd.h>
133#else 158#else
159# include <io.h>
134# define WIN32_LEAN_AND_MEAN 160# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 161# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 162# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 163# define EV_SELECT_IS_WINSOCKET 1
138# endif 164# endif
139#endif 165#endif
140 166
141/**/ 167/* this block tries to deduce configuration from header-defined symbols and defaults */
142 168
143#ifndef EV_USE_MONOTONIC 169#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1
172# else
144# define EV_USE_MONOTONIC 0 173# define EV_USE_MONOTONIC 0
174# endif
145#endif 175#endif
146 176
147#ifndef EV_USE_REALTIME 177#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 178# define EV_USE_REALTIME 0
179#endif
180
181#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1
184# else
185# define EV_USE_NANOSLEEP 0
186# endif
149#endif 187#endif
150 188
151#ifndef EV_USE_SELECT 189#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 190# define EV_USE_SELECT 1
153#endif 191#endif
… …
159# define EV_USE_POLL 1 197# define EV_USE_POLL 1
160# endif 198# endif
161#endif 199#endif
162 200
163#ifndef EV_USE_EPOLL 201#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1
204# else
164# define EV_USE_EPOLL 0 205# define EV_USE_EPOLL 0
206# endif
165#endif 207#endif
166 208
167#ifndef EV_USE_KQUEUE 209#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 210# define EV_USE_KQUEUE 0
169#endif 211#endif
… …
171#ifndef EV_USE_PORT 213#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 214# define EV_USE_PORT 0
173#endif 215#endif
174 216
175#ifndef EV_USE_INOTIFY 217#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1
220# else
176# define EV_USE_INOTIFY 0 221# define EV_USE_INOTIFY 0
222# endif
177#endif 223#endif
178 224
179#ifndef EV_PID_HASHSIZE 225#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 226# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 227# define EV_PID_HASHSIZE 1
… …
190# else 236# else
191# define EV_INOTIFY_HASHSIZE 16 237# define EV_INOTIFY_HASHSIZE 16
192# endif 238# endif
193#endif 239#endif
194 240
195/**/ 241#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1
244# else
245# define EV_USE_EVENTFD 0
246# endif
247#endif
248
249#if 0 /* debugging */
250# define EV_VERIFY 3
251# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1
253#endif
254
255#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL
257#endif
258
259#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL
261#endif
262
263#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL
265#endif
266
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 268
197#ifndef CLOCK_MONOTONIC 269#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 270# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 271# define EV_USE_MONOTONIC 0
200#endif 272#endif
… …
202#ifndef CLOCK_REALTIME 274#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 275# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 276# define EV_USE_REALTIME 0
205#endif 277#endif
206 278
279#if !EV_STAT_ENABLE
280# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0
282#endif
283
284#if !EV_USE_NANOSLEEP
285# ifndef _WIN32
286# include <sys/select.h>
287# endif
288#endif
289
290#if EV_USE_INOTIFY
291# include <sys/utsname.h>
292# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0
297# endif
298#endif
299
207#if EV_SELECT_IS_WINSOCKET 300#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 301# include <winsock.h>
209#endif 302#endif
210 303
211#if !EV_STAT_ENABLE 304#if EV_USE_EVENTFD
212# define EV_USE_INOTIFY 0 305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h>
307# ifdef __cplusplus
308extern "C" {
213#endif 309# endif
214 310int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 311# ifdef __cplusplus
216# include <sys/inotify.h> 312}
313# endif
217#endif 314#endif
218 315
219/**/ 316/**/
317
318#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
320#else
321# define EV_FREQUENT_CHECK do { } while (0)
322#endif
220 323
221/* 324/*
222 * This is used to avoid floating point rounding problems. 325 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics 326 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding 327 * to ensure progress, time-wise, even when rounding
… …
230 333
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 334#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) */ 335#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 */ 336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234 337
235#if __GNUC__ >= 3 338#if __GNUC__ >= 4
236# define expect(expr,value) __builtin_expect ((expr),(value)) 339# define expect(expr,value) __builtin_expect ((expr),(value))
237# define noinline __attribute__ ((noinline)) 340# define noinline __attribute__ ((noinline))
238#else 341#else
239# define expect(expr,value) (expr) 342# define expect(expr,value) (expr)
240# define noinline 343# define noinline
241# if __STDC_VERSION__ < 199901L 344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242# define inline 345# define inline
243# endif 346# endif
244#endif 347#endif
245 348
246#define expect_false(expr) expect ((expr) != 0, 0) 349#define expect_false(expr) expect ((expr) != 0, 0)
… …
261 364
262typedef ev_watcher *W; 365typedef ev_watcher *W;
263typedef ev_watcher_list *WL; 366typedef ev_watcher_list *WL;
264typedef ev_watcher_time *WT; 367typedef ev_watcher_time *WT;
265 368
369#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at
371
372#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
376#endif
267 377
268#ifdef _WIN32 378#ifdef _WIN32
269# include "ev_win32.c" 379# include "ev_win32.c"
270#endif 380#endif
271 381
… …
292 perror (msg); 402 perror (msg);
293 abort (); 403 abort ();
294 } 404 }
295} 405}
296 406
407static void *
408ev_realloc_emul (void *ptr, long size)
409{
410 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and
412 * the single unix specification, so work around them here.
413 */
414
415 if (size)
416 return realloc (ptr, size);
417
418 free (ptr);
419 return 0;
420}
421
297static void *(*alloc)(void *ptr, long size); 422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298 423
299void 424void
300ev_set_allocator (void *(*cb)(void *ptr, long size)) 425ev_set_allocator (void *(*cb)(void *ptr, long size))
301{ 426{
302 alloc = cb; 427 alloc = cb;
303} 428}
304 429
305inline_speed void * 430inline_speed void *
306ev_realloc (void *ptr, long size) 431ev_realloc (void *ptr, long size)
307{ 432{
308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 433 ptr = alloc (ptr, size);
309 434
310 if (!ptr && size) 435 if (!ptr && size)
311 { 436 {
312 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313 abort (); 438 abort ();
… …
336 W w; 461 W w;
337 int events; 462 int events;
338} ANPENDING; 463} ANPENDING;
339 464
340#if EV_USE_INOTIFY 465#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */
341typedef struct 467typedef struct
342{ 468{
343 WL head; 469 WL head;
344} ANFS; 470} ANFS;
471#endif
472
473/* Heap Entry */
474#if EV_HEAP_CACHE_AT
475 typedef struct {
476 ev_tstamp at;
477 WT w;
478 } ANHE;
479
480 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
483#else
484 typedef WT ANHE;
485
486 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he)
345#endif 489#endif
346 490
347#if EV_MULTIPLICITY 491#if EV_MULTIPLICITY
348 492
349 struct ev_loop 493 struct ev_loop
… …
407{ 551{
408 return ev_rt_now; 552 return ev_rt_now;
409} 553}
410#endif 554#endif
411 555
556void
557ev_sleep (ev_tstamp delay)
558{
559 if (delay > 0.)
560 {
561#if EV_USE_NANOSLEEP
562 struct timespec ts;
563
564 ts.tv_sec = (time_t)delay;
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0);
568#elif defined(_WIN32)
569 Sleep ((unsigned long)(delay * 1e3));
570#else
571 struct timeval tv;
572
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */
579 select (0, 0, 0, 0, &tv);
580#endif
581 }
582}
583
584/*****************************************************************************/
585
586#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
587
412int inline_size 588int inline_size
413array_nextsize (int elem, int cur, int cnt) 589array_nextsize (int elem, int cur, int cnt)
414{ 590{
415 int ncur = cur + 1; 591 int ncur = cur + 1;
416 592
417 do 593 do
418 ncur <<= 1; 594 ncur <<= 1;
419 while (cnt > ncur); 595 while (cnt > ncur);
420 596
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 597 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096) 598 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423 { 599 {
424 ncur *= elem; 600 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 601 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426 ncur = ncur - sizeof (void *) * 4; 602 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem; 603 ncur /= elem;
428 } 604 }
429 605
430 return ncur; 606 return ncur;
… …
533 { 709 {
534 int fd = fdchanges [i]; 710 int fd = fdchanges [i];
535 ANFD *anfd = anfds + fd; 711 ANFD *anfd = anfds + fd;
536 ev_io *w; 712 ev_io *w;
537 713
538 int events = 0; 714 unsigned char events = 0;
539 715
540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541 events |= w->events; 717 events |= (unsigned char)w->events;
542 718
543#if EV_SELECT_IS_WINSOCKET 719#if EV_SELECT_IS_WINSOCKET
544 if (events) 720 if (events)
545 { 721 {
546 unsigned long argp; 722 unsigned long arg;
723 #ifdef EV_FD_TO_WIN32_HANDLE
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
725 #else
547 anfd->handle = _get_osfhandle (fd); 726 anfd->handle = _get_osfhandle (fd);
727 #endif
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
549 } 729 }
550#endif 730#endif
551 731
732 {
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
552 anfd->reify = 0; 736 anfd->reify = 0;
553
554 backend_modify (EV_A_ fd, anfd->events, events);
555 anfd->events = events; 737 anfd->events = events;
738
739 if (o_events != events || o_reify & EV_IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events);
741 }
556 } 742 }
557 743
558 fdchangecnt = 0; 744 fdchangecnt = 0;
559} 745}
560 746
561void inline_size 747void inline_size
562fd_change (EV_P_ int fd) 748fd_change (EV_P_ int fd, int flags)
563{ 749{
564 if (expect_false (anfds [fd].reify)) 750 unsigned char reify = anfds [fd].reify;
565 return;
566
567 anfds [fd].reify = 1; 751 anfds [fd].reify |= flags;
568 752
753 if (expect_true (!reify))
754 {
569 ++fdchangecnt; 755 ++fdchangecnt;
570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571 fdchanges [fdchangecnt - 1] = fd; 757 fdchanges [fdchangecnt - 1] = fd;
758 }
572} 759}
573 760
574void inline_speed 761void inline_speed
575fd_kill (EV_P_ int fd) 762fd_kill (EV_P_ int fd)
576{ 763{
… …
599{ 786{
600 int fd; 787 int fd;
601 788
602 for (fd = 0; fd < anfdmax; ++fd) 789 for (fd = 0; fd < anfdmax; ++fd)
603 if (anfds [fd].events) 790 if (anfds [fd].events)
604 if (!fd_valid (fd) == -1 && errno == EBADF) 791 if (!fd_valid (fd) && errno == EBADF)
605 fd_kill (EV_A_ fd); 792 fd_kill (EV_A_ fd);
606} 793}
607 794
608/* called on ENOMEM in select/poll to kill some fds and retry */ 795/* called on ENOMEM in select/poll to kill some fds and retry */
609static void noinline 796static void noinline
… …
627 814
628 for (fd = 0; fd < anfdmax; ++fd) 815 for (fd = 0; fd < anfdmax; ++fd)
629 if (anfds [fd].events) 816 if (anfds [fd].events)
630 { 817 {
631 anfds [fd].events = 0; 818 anfds [fd].events = 0;
632 fd_change (EV_A_ fd); 819 fd_change (EV_A_ fd, EV_IOFDSET | 1);
633 } 820 }
634} 821}
635 822
636/*****************************************************************************/ 823/*****************************************************************************/
637 824
825/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree.
829 */
830
831/*
832 * at the moment we allow libev the luxury of two heaps,
833 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
834 * which is more cache-efficient.
835 * the difference is about 5% with 50000+ watchers.
836 */
837#if EV_USE_4HEAP
838
839#define DHEAP 4
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k))
843
844/* away from the root */
638void inline_speed 845void inline_speed
639upheap (WT *heap, int k) 846downheap (ANHE *heap, int N, int k)
640{ 847{
641 WT w = heap [k]; 848 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0;
642 850
643 while (k) 851 for (;;)
644 { 852 {
645 int p = (k - 1) >> 1; 853 ev_tstamp minat;
854 ANHE *minpos;
855 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
646 856
647 if (heap [p]->at <= w->at) 857 /* find minimum child */
858 if (expect_true (pos + DHEAP - 1 < E))
859 {
860 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
861 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
862 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
863 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
864 }
865 else if (pos < E)
866 {
867 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
868 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
869 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
870 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
871 }
872 else
648 break; 873 break;
649 874
875 if (ANHE_at (he) <= minat)
876 break;
877
878 heap [k] = *minpos;
879 ev_active (ANHE_w (*minpos)) = k;
880
881 k = minpos - heap;
882 }
883
884 heap [k] = he;
885 ev_active (ANHE_w (he)) = k;
886}
887
888#else /* 4HEAP */
889
890#define HEAP0 1
891#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p))
893
894/* away from the root */
895void inline_speed
896downheap (ANHE *heap, int N, int k)
897{
898 ANHE he = heap [k];
899
900 for (;;)
901 {
902 int c = k << 1;
903
904 if (c > N + HEAP0 - 1)
905 break;
906
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0;
909
910 if (ANHE_at (he) <= ANHE_at (heap [c]))
911 break;
912
913 heap [k] = heap [c];
914 ev_active (ANHE_w (heap [k])) = k;
915
916 k = c;
917 }
918
919 heap [k] = he;
920 ev_active (ANHE_w (he)) = k;
921}
922#endif
923
924/* towards the root */
925void inline_speed
926upheap (ANHE *heap, int k)
927{
928 ANHE he = heap [k];
929
930 for (;;)
931 {
932 int p = HPARENT (k);
933
934 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
935 break;
936
650 heap [k] = heap [p]; 937 heap [k] = heap [p];
651 ((W)heap [k])->active = k + 1; 938 ev_active (ANHE_w (heap [k])) = k;
652 k = p; 939 k = p;
653 } 940 }
654 941
655 heap [k] = w; 942 heap [k] = he;
656 ((W)heap [k])->active = k + 1; 943 ev_active (ANHE_w (he)) = k;
657}
658
659void inline_speed
660downheap (WT *heap, int N, int k)
661{
662 WT w = heap [k];
663
664 for (;;)
665 {
666 int c = (k << 1) + 1;
667
668 if (c >= N)
669 break;
670
671 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
672 ? 1 : 0;
673
674 if (w->at <= heap [c]->at)
675 break;
676
677 heap [k] = heap [c];
678 ((W)heap [k])->active = k + 1;
679
680 k = c;
681 }
682
683 heap [k] = w;
684 ((W)heap [k])->active = k + 1;
685} 944}
686 945
687void inline_size 946void inline_size
688adjustheap (WT *heap, int N, int k) 947adjustheap (ANHE *heap, int N, int k)
689{ 948{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
690 upheap (heap, k); 950 upheap (heap, k);
951 else
691 downheap (heap, N, k); 952 downheap (heap, N, k);
953}
954
955/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size
957reheap (ANHE *heap, int N)
958{
959 int i;
960
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
962 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
963 for (i = 0; i < N; ++i)
964 upheap (heap, i + HEAP0);
692} 965}
693 966
694/*****************************************************************************/ 967/*****************************************************************************/
695 968
696typedef struct 969typedef struct
697{ 970{
698 WL head; 971 WL head;
699 sig_atomic_t volatile gotsig; 972 EV_ATOMIC_T gotsig;
700} ANSIG; 973} ANSIG;
701 974
702static ANSIG *signals; 975static ANSIG *signals;
703static int signalmax; 976static int signalmax;
704 977
705static int sigpipe [2]; 978static EV_ATOMIC_T gotsig;
706static sig_atomic_t volatile gotsig;
707static ev_io sigev;
708 979
709void inline_size 980void inline_size
710signals_init (ANSIG *base, int count) 981signals_init (ANSIG *base, int count)
711{ 982{
712 while (count--) 983 while (count--)
… …
716 987
717 ++base; 988 ++base;
718 } 989 }
719} 990}
720 991
721static void 992/*****************************************************************************/
722sighandler (int signum)
723{
724#if _WIN32
725 signal (signum, sighandler);
726#endif
727
728 signals [signum - 1].gotsig = 1;
729
730 if (!gotsig)
731 {
732 int old_errno = errno;
733 gotsig = 1;
734 write (sigpipe [1], &signum, 1);
735 errno = old_errno;
736 }
737}
738
739void noinline
740ev_feed_signal_event (EV_P_ int signum)
741{
742 WL w;
743
744#if EV_MULTIPLICITY
745 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
746#endif
747
748 --signum;
749
750 if (signum < 0 || signum >= signalmax)
751 return;
752
753 signals [signum].gotsig = 0;
754
755 for (w = signals [signum].head; w; w = w->next)
756 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
757}
758
759static void
760sigcb (EV_P_ ev_io *iow, int revents)
761{
762 int signum;
763
764 read (sigpipe [0], &revents, 1);
765 gotsig = 0;
766
767 for (signum = signalmax; signum--; )
768 if (signals [signum].gotsig)
769 ev_feed_signal_event (EV_A_ signum + 1);
770}
771 993
772void inline_speed 994void inline_speed
773fd_intern (int fd) 995fd_intern (int fd)
774{ 996{
775#ifdef _WIN32 997#ifdef _WIN32
776 int arg = 1; 998 unsigned long arg = 1;
777 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
778#else 1000#else
779 fcntl (fd, F_SETFD, FD_CLOEXEC); 1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
780 fcntl (fd, F_SETFL, O_NONBLOCK); 1002 fcntl (fd, F_SETFL, O_NONBLOCK);
781#endif 1003#endif
782} 1004}
783 1005
784static void noinline 1006static void noinline
785siginit (EV_P) 1007evpipe_init (EV_P)
786{ 1008{
1009 if (!ev_is_active (&pipeev))
1010 {
1011#if EV_USE_EVENTFD
1012 if ((evfd = eventfd (0, 0)) >= 0)
1013 {
1014 evpipe [0] = -1;
1015 fd_intern (evfd);
1016 ev_io_set (&pipeev, evfd, EV_READ);
1017 }
1018 else
1019#endif
1020 {
1021 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe");
1023
787 fd_intern (sigpipe [0]); 1024 fd_intern (evpipe [0]);
788 fd_intern (sigpipe [1]); 1025 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ);
1027 }
789 1028
790 ev_io_set (&sigev, sigpipe [0], EV_READ);
791 ev_io_start (EV_A_ &sigev); 1029 ev_io_start (EV_A_ &pipeev);
792 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1030 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 }
1032}
1033
1034void inline_size
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{
1037 if (!*flag)
1038 {
1039 int old_errno = errno; /* save errno because write might clobber it */
1040
1041 *flag = 1;
1042
1043#if EV_USE_EVENTFD
1044 if (evfd >= 0)
1045 {
1046 uint64_t counter = 1;
1047 write (evfd, &counter, sizeof (uint64_t));
1048 }
1049 else
1050#endif
1051 write (evpipe [1], &old_errno, 1);
1052
1053 errno = old_errno;
1054 }
1055}
1056
1057static void
1058pipecb (EV_P_ ev_io *iow, int revents)
1059{
1060#if EV_USE_EVENTFD
1061 if (evfd >= 0)
1062 {
1063 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t));
1065 }
1066 else
1067#endif
1068 {
1069 char dummy;
1070 read (evpipe [0], &dummy, 1);
1071 }
1072
1073 if (gotsig && ev_is_default_loop (EV_A))
1074 {
1075 int signum;
1076 gotsig = 0;
1077
1078 for (signum = signalmax; signum--; )
1079 if (signals [signum].gotsig)
1080 ev_feed_signal_event (EV_A_ signum + 1);
1081 }
1082
1083#if EV_ASYNC_ENABLE
1084 if (gotasync)
1085 {
1086 int i;
1087 gotasync = 0;
1088
1089 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent)
1091 {
1092 asyncs [i]->sent = 0;
1093 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1094 }
1095 }
1096#endif
793} 1097}
794 1098
795/*****************************************************************************/ 1099/*****************************************************************************/
796 1100
1101static void
1102ev_sighandler (int signum)
1103{
1104#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct;
1106#endif
1107
1108#if _WIN32
1109 signal (signum, ev_sighandler);
1110#endif
1111
1112 signals [signum - 1].gotsig = 1;
1113 evpipe_write (EV_A_ &gotsig);
1114}
1115
1116void noinline
1117ev_feed_signal_event (EV_P_ int signum)
1118{
1119 WL w;
1120
1121#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1123#endif
1124
1125 --signum;
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return;
1129
1130 signals [signum].gotsig = 0;
1131
1132 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134}
1135
1136/*****************************************************************************/
1137
797static ev_child *childs [EV_PID_HASHSIZE]; 1138static WL childs [EV_PID_HASHSIZE];
798 1139
799#ifndef _WIN32 1140#ifndef _WIN32
800 1141
801static ev_signal childev; 1142static ev_signal childev;
802 1143
1144#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0
1146#endif
1147
803void inline_speed 1148void inline_speed
804child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1149child_reap (EV_P_ int chain, int pid, int status)
805{ 1150{
806 ev_child *w; 1151 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
807 1153
808 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 {
809 if (w->pid == pid || !w->pid) 1156 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1)))
810 { 1158 {
811 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
812 w->rpid = pid; 1160 w->rpid = pid;
813 w->rstatus = status; 1161 w->rstatus = status;
814 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1162 ev_feed_event (EV_A_ (W)w, EV_CHILD);
815 } 1163 }
1164 }
816} 1165}
817 1166
818#ifndef WCONTINUED 1167#ifndef WCONTINUED
819# define WCONTINUED 0 1168# define WCONTINUED 0
820#endif 1169#endif
… …
829 if (!WCONTINUED 1178 if (!WCONTINUED
830 || errno != EINVAL 1179 || errno != EINVAL
831 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1180 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
832 return; 1181 return;
833 1182
834 /* make sure we are called again until all childs have been reaped */ 1183 /* make sure we are called again until all children have been reaped */
835 /* we need to do it this way so that the callback gets called before we continue */ 1184 /* we need to do it this way so that the callback gets called before we continue */
836 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
837 1186
838 child_reap (EV_A_ sw, pid, pid, status); 1187 child_reap (EV_A_ pid, pid, status);
839 if (EV_PID_HASHSIZE > 1) 1188 if (EV_PID_HASHSIZE > 1)
840 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
841} 1190}
842 1191
843#endif 1192#endif
844 1193
845/*****************************************************************************/ 1194/*****************************************************************************/
… …
917} 1266}
918 1267
919unsigned int 1268unsigned int
920ev_embeddable_backends (void) 1269ev_embeddable_backends (void)
921{ 1270{
922 return EVBACKEND_EPOLL 1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
923 | EVBACKEND_KQUEUE 1272
924 | EVBACKEND_PORT; 1273 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1274 /* please fix it and tell me how to detect the fix */
1275 flags &= ~EVBACKEND_EPOLL;
1276
1277 return flags;
925} 1278}
926 1279
927unsigned int 1280unsigned int
928ev_backend (EV_P) 1281ev_backend (EV_P)
929{ 1282{
… …
932 1285
933unsigned int 1286unsigned int
934ev_loop_count (EV_P) 1287ev_loop_count (EV_P)
935{ 1288{
936 return loop_count; 1289 return loop_count;
1290}
1291
1292void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1294{
1295 io_blocktime = interval;
1296}
1297
1298void
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1300{
1301 timeout_blocktime = interval;
937} 1302}
938 1303
939static void noinline 1304static void noinline
940loop_init (EV_P_ unsigned int flags) 1305loop_init (EV_P_ unsigned int flags)
941{ 1306{
… …
947 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
948 have_monotonic = 1; 1313 have_monotonic = 1;
949 } 1314 }
950#endif 1315#endif
951 1316
952 ev_rt_now = ev_time (); 1317 ev_rt_now = ev_time ();
953 mn_now = get_clock (); 1318 mn_now = get_clock ();
954 now_floor = mn_now; 1319 now_floor = mn_now;
955 rtmn_diff = ev_rt_now - mn_now; 1320 rtmn_diff = ev_rt_now - mn_now;
1321
1322 io_blocktime = 0.;
1323 timeout_blocktime = 0.;
1324 backend = 0;
1325 backend_fd = -1;
1326 gotasync = 0;
1327#if EV_USE_INOTIFY
1328 fs_fd = -2;
1329#endif
956 1330
957 /* pid check not overridable via env */ 1331 /* pid check not overridable via env */
958#ifndef _WIN32 1332#ifndef _WIN32
959 if (flags & EVFLAG_FORKCHECK) 1333 if (flags & EVFLAG_FORKCHECK)
960 curpid = getpid (); 1334 curpid = getpid ();
… …
963 if (!(flags & EVFLAG_NOENV) 1337 if (!(flags & EVFLAG_NOENV)
964 && !enable_secure () 1338 && !enable_secure ()
965 && getenv ("LIBEV_FLAGS")) 1339 && getenv ("LIBEV_FLAGS"))
966 flags = atoi (getenv ("LIBEV_FLAGS")); 1340 flags = atoi (getenv ("LIBEV_FLAGS"));
967 1341
968 if (!(flags & 0x0000ffffUL)) 1342 if (!(flags & 0x0000ffffU))
969 flags |= ev_recommended_backends (); 1343 flags |= ev_recommended_backends ();
970
971 backend = 0;
972 backend_fd = -1;
973#if EV_USE_INOTIFY
974 fs_fd = -2;
975#endif
976 1344
977#if EV_USE_PORT 1345#if EV_USE_PORT
978 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
979#endif 1347#endif
980#if EV_USE_KQUEUE 1348#if EV_USE_KQUEUE
… …
988#endif 1356#endif
989#if EV_USE_SELECT 1357#if EV_USE_SELECT
990 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
991#endif 1359#endif
992 1360
993 ev_init (&sigev, sigcb); 1361 ev_init (&pipeev, pipecb);
994 ev_set_priority (&sigev, EV_MAXPRI); 1362 ev_set_priority (&pipeev, EV_MAXPRI);
995 } 1363 }
996} 1364}
997 1365
998static void noinline 1366static void noinline
999loop_destroy (EV_P) 1367loop_destroy (EV_P)
1000{ 1368{
1001 int i; 1369 int i;
1370
1371 if (ev_is_active (&pipeev))
1372 {
1373 ev_ref (EV_A); /* signal watcher */
1374 ev_io_stop (EV_A_ &pipeev);
1375
1376#if EV_USE_EVENTFD
1377 if (evfd >= 0)
1378 close (evfd);
1379#endif
1380
1381 if (evpipe [0] >= 0)
1382 {
1383 close (evpipe [0]);
1384 close (evpipe [1]);
1385 }
1386 }
1002 1387
1003#if EV_USE_INOTIFY 1388#if EV_USE_INOTIFY
1004 if (fs_fd >= 0) 1389 if (fs_fd >= 0)
1005 close (fs_fd); 1390 close (fs_fd);
1006#endif 1391#endif
… …
1029 array_free (pending, [i]); 1414 array_free (pending, [i]);
1030#if EV_IDLE_ENABLE 1415#if EV_IDLE_ENABLE
1031 array_free (idle, [i]); 1416 array_free (idle, [i]);
1032#endif 1417#endif
1033 } 1418 }
1419
1420 ev_free (anfds); anfdmax = 0;
1034 1421
1035 /* have to use the microsoft-never-gets-it-right macro */ 1422 /* have to use the microsoft-never-gets-it-right macro */
1036 array_free (fdchange, EMPTY); 1423 array_free (fdchange, EMPTY);
1037 array_free (timer, EMPTY); 1424 array_free (timer, EMPTY);
1038#if EV_PERIODIC_ENABLE 1425#if EV_PERIODIC_ENABLE
1039 array_free (periodic, EMPTY); 1426 array_free (periodic, EMPTY);
1040#endif 1427#endif
1428#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY);
1430#endif
1041 array_free (prepare, EMPTY); 1431 array_free (prepare, EMPTY);
1042 array_free (check, EMPTY); 1432 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY);
1435#endif
1043 1436
1044 backend = 0; 1437 backend = 0;
1045} 1438}
1046 1439
1440#if EV_USE_INOTIFY
1047void inline_size infy_fork (EV_P); 1441void inline_size infy_fork (EV_P);
1442#endif
1048 1443
1049void inline_size 1444void inline_size
1050loop_fork (EV_P) 1445loop_fork (EV_P)
1051{ 1446{
1052#if EV_USE_PORT 1447#if EV_USE_PORT
… …
1060#endif 1455#endif
1061#if EV_USE_INOTIFY 1456#if EV_USE_INOTIFY
1062 infy_fork (EV_A); 1457 infy_fork (EV_A);
1063#endif 1458#endif
1064 1459
1065 if (ev_is_active (&sigev)) 1460 if (ev_is_active (&pipeev))
1066 { 1461 {
1067 /* default loop */ 1462 /* this "locks" the handlers against writing to the pipe */
1463 /* while we modify the fd vars */
1464 gotsig = 1;
1465#if EV_ASYNC_ENABLE
1466 gotasync = 1;
1467#endif
1068 1468
1069 ev_ref (EV_A); 1469 ev_ref (EV_A);
1070 ev_io_stop (EV_A_ &sigev); 1470 ev_io_stop (EV_A_ &pipeev);
1471
1472#if EV_USE_EVENTFD
1473 if (evfd >= 0)
1474 close (evfd);
1475#endif
1476
1477 if (evpipe [0] >= 0)
1478 {
1071 close (sigpipe [0]); 1479 close (evpipe [0]);
1072 close (sigpipe [1]); 1480 close (evpipe [1]);
1481 }
1073 1482
1074 while (pipe (sigpipe))
1075 syserr ("(libev) error creating pipe");
1076
1077 siginit (EV_A); 1483 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ);
1078 } 1486 }
1079 1487
1080 postfork = 0; 1488 postfork = 0;
1081} 1489}
1082 1490
1083#if EV_MULTIPLICITY 1491#if EV_MULTIPLICITY
1492
1084struct ev_loop * 1493struct ev_loop *
1085ev_loop_new (unsigned int flags) 1494ev_loop_new (unsigned int flags)
1086{ 1495{
1087 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1088 1497
… …
1104} 1513}
1105 1514
1106void 1515void
1107ev_loop_fork (EV_P) 1516ev_loop_fork (EV_P)
1108{ 1517{
1109 postfork = 1; 1518 postfork = 1; /* must be in line with ev_default_fork */
1110} 1519}
1111 1520
1521#if EV_VERIFY
1522static void noinline
1523verify_watcher (EV_P_ W w)
1524{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526
1527 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529}
1530
1531static void noinline
1532verify_heap (EV_P_ ANHE *heap, int N)
1533{
1534 int i;
1535
1536 for (i = HEAP0; i < N + HEAP0; ++i)
1537 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 }
1544}
1545
1546static void noinline
1547array_verify (EV_P_ W *ws, int cnt)
1548{
1549 while (cnt--)
1550 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]);
1553 }
1554}
1555#endif
1556
1557void
1558ev_loop_verify (EV_P)
1559{
1560#if EV_VERIFY
1561 int i;
1562 WL w;
1563
1564 assert (activecnt >= -1);
1565
1566 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1569
1570 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i)
1572 for (w = anfds [i].head; w; w = w->next)
1573 {
1574 verify_watcher (EV_A_ (W)w);
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 }
1578
1579 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt);
1581
1582#if EV_PERIODIC_ENABLE
1583 assert (periodicmax >= periodiccnt);
1584 verify_heap (EV_A_ periodics, periodiccnt);
1585#endif
1586
1587 for (i = NUMPRI; i--; )
1588 {
1589 assert (pendingmax [i] >= pendingcnt [i]);
1590#if EV_IDLE_ENABLE
1591 assert (idleall >= 0);
1592 assert (idlemax [i] >= idlecnt [i]);
1593 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1594#endif
1595 }
1596
1597#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif
1601
1602#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif
1606
1607 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt);
1609
1610 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt);
1612
1613# if 0
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1112#endif 1616# endif
1617#endif
1618}
1619
1620#endif /* multiplicity */
1113 1621
1114#if EV_MULTIPLICITY 1622#if EV_MULTIPLICITY
1115struct ev_loop * 1623struct ev_loop *
1116ev_default_loop_init (unsigned int flags) 1624ev_default_loop_init (unsigned int flags)
1117#else 1625#else
1118int 1626int
1119ev_default_loop (unsigned int flags) 1627ev_default_loop (unsigned int flags)
1120#endif 1628#endif
1121{ 1629{
1122 if (sigpipe [0] == sigpipe [1])
1123 if (pipe (sigpipe))
1124 return 0;
1125
1126 if (!ev_default_loop_ptr) 1630 if (!ev_default_loop_ptr)
1127 { 1631 {
1128#if EV_MULTIPLICITY 1632#if EV_MULTIPLICITY
1129 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1130#else 1634#else
… …
1133 1637
1134 loop_init (EV_A_ flags); 1638 loop_init (EV_A_ flags);
1135 1639
1136 if (ev_backend (EV_A)) 1640 if (ev_backend (EV_A))
1137 { 1641 {
1138 siginit (EV_A);
1139
1140#ifndef _WIN32 1642#ifndef _WIN32
1141 ev_signal_init (&childev, childcb, SIGCHLD); 1643 ev_signal_init (&childev, childcb, SIGCHLD);
1142 ev_set_priority (&childev, EV_MAXPRI); 1644 ev_set_priority (&childev, EV_MAXPRI);
1143 ev_signal_start (EV_A_ &childev); 1645 ev_signal_start (EV_A_ &childev);
1144 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1646 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1161#ifndef _WIN32 1663#ifndef _WIN32
1162 ev_ref (EV_A); /* child watcher */ 1664 ev_ref (EV_A); /* child watcher */
1163 ev_signal_stop (EV_A_ &childev); 1665 ev_signal_stop (EV_A_ &childev);
1164#endif 1666#endif
1165 1667
1166 ev_ref (EV_A); /* signal watcher */
1167 ev_io_stop (EV_A_ &sigev);
1168
1169 close (sigpipe [0]); sigpipe [0] = 0;
1170 close (sigpipe [1]); sigpipe [1] = 0;
1171
1172 loop_destroy (EV_A); 1668 loop_destroy (EV_A);
1173} 1669}
1174 1670
1175void 1671void
1176ev_default_fork (void) 1672ev_default_fork (void)
… …
1178#if EV_MULTIPLICITY 1674#if EV_MULTIPLICITY
1179 struct ev_loop *loop = ev_default_loop_ptr; 1675 struct ev_loop *loop = ev_default_loop_ptr;
1180#endif 1676#endif
1181 1677
1182 if (backend) 1678 if (backend)
1183 postfork = 1; 1679 postfork = 1; /* must be in line with ev_loop_fork */
1184} 1680}
1185 1681
1186/*****************************************************************************/ 1682/*****************************************************************************/
1187 1683
1188void 1684void
… …
1205 { 1701 {
1206 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1207 1703
1208 p->w->pending = 0; 1704 p->w->pending = 0;
1209 EV_CB_INVOKE (p->w, p->events); 1705 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK;
1210 } 1707 }
1211 } 1708 }
1212} 1709}
1213
1214void inline_size
1215timers_reify (EV_P)
1216{
1217 while (timercnt && ((WT)timers [0])->at <= mn_now)
1218 {
1219 ev_timer *w = (ev_timer *)timers [0];
1220
1221 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1222
1223 /* first reschedule or stop timer */
1224 if (w->repeat)
1225 {
1226 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1227
1228 ((WT)w)->at += w->repeat;
1229 if (((WT)w)->at < mn_now)
1230 ((WT)w)->at = mn_now;
1231
1232 downheap (timers, timercnt, 0);
1233 }
1234 else
1235 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1236
1237 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1238 }
1239}
1240
1241#if EV_PERIODIC_ENABLE
1242void inline_size
1243periodics_reify (EV_P)
1244{
1245 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1246 {
1247 ev_periodic *w = (ev_periodic *)periodics [0];
1248
1249 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1250
1251 /* first reschedule or stop timer */
1252 if (w->reschedule_cb)
1253 {
1254 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1255 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1256 downheap (periodics, periodiccnt, 0);
1257 }
1258 else if (w->interval)
1259 {
1260 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1261 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1262 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1263 downheap (periodics, periodiccnt, 0);
1264 }
1265 else
1266 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1267
1268 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1269 }
1270}
1271
1272static void noinline
1273periodics_reschedule (EV_P)
1274{
1275 int i;
1276
1277 /* adjust periodics after time jump */
1278 for (i = 0; i < periodiccnt; ++i)
1279 {
1280 ev_periodic *w = (ev_periodic *)periodics [i];
1281
1282 if (w->reschedule_cb)
1283 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1284 else if (w->interval)
1285 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1286 }
1287
1288 /* now rebuild the heap */
1289 for (i = periodiccnt >> 1; i--; )
1290 downheap (periodics, periodiccnt, i);
1291}
1292#endif
1293 1710
1294#if EV_IDLE_ENABLE 1711#if EV_IDLE_ENABLE
1295void inline_size 1712void inline_size
1296idle_reify (EV_P) 1713idle_reify (EV_P)
1297{ 1714{
… …
1309 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); 1726 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1310 break; 1727 break;
1311 } 1728 }
1312 } 1729 }
1313 } 1730 }
1731}
1732#endif
1733
1734void inline_size
1735timers_reify (EV_P)
1736{
1737 EV_FREQUENT_CHECK;
1738
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 {
1748 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now;
1751
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753
1754 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0);
1756 }
1757 else
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759
1760 EV_FREQUENT_CHECK;
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 }
1763}
1764
1765#if EV_PERIODIC_ENABLE
1766void inline_size
1767periodics_reify (EV_P)
1768{
1769 EV_FREQUENT_CHECK;
1770
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1774
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else if (w->interval)
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1811 }
1812}
1813
1814static void noinline
1815periodics_reschedule (EV_P)
1816{
1817 int i;
1818
1819 /* adjust periodics after time jump */
1820 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1821 {
1822 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1823
1824 if (w->reschedule_cb)
1825 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1826 else if (w->interval)
1827 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1828
1829 ANHE_at_cache (periodics [i]);
1830 }
1831
1832 reheap (periodics, periodiccnt);
1314} 1833}
1315#endif 1834#endif
1316 1835
1317void inline_speed 1836void inline_speed
1318time_update (EV_P_ ev_tstamp max_block) 1837time_update (EV_P_ ev_tstamp max_block)
… …
1347 */ 1866 */
1348 for (i = 4; --i; ) 1867 for (i = 4; --i; )
1349 { 1868 {
1350 rtmn_diff = ev_rt_now - mn_now; 1869 rtmn_diff = ev_rt_now - mn_now;
1351 1870
1352 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1871 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1353 return; /* all is well */ 1872 return; /* all is well */
1354 1873
1355 ev_rt_now = ev_time (); 1874 ev_rt_now = ev_time ();
1356 mn_now = get_clock (); 1875 mn_now = get_clock ();
1357 now_floor = mn_now; 1876 now_floor = mn_now;
… …
1373#if EV_PERIODIC_ENABLE 1892#if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 1893 periodics_reschedule (EV_A);
1375#endif 1894#endif
1376 /* adjust timers. this is easy, as the offset is the same for all of them */ 1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1377 for (i = 0; i < timercnt; ++i) 1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1378 ((WT)timers [i])->at += ev_rt_now - mn_now; 1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1379 } 1902 }
1380 1903
1381 mn_now = ev_rt_now; 1904 mn_now = ev_rt_now;
1382 } 1905 }
1383} 1906}
… …
1392ev_unref (EV_P) 1915ev_unref (EV_P)
1393{ 1916{
1394 --activecnt; 1917 --activecnt;
1395} 1918}
1396 1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1397static int loop_done; 1926static int loop_done;
1398 1927
1399void 1928void
1400ev_loop (EV_P_ int flags) 1929ev_loop (EV_P_ int flags)
1401{ 1930{
1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1931 loop_done = EVUNLOOP_CANCEL;
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405 1932
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1407 1934
1408 do 1935 do
1409 { 1936 {
1937#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A);
1939#endif
1940
1410#ifndef _WIN32 1941#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */ 1942 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid)) 1943 if (expect_false (getpid () != curpid))
1413 { 1944 {
1414 curpid = getpid (); 1945 curpid = getpid ();
… …
1443 /* update fd-related kernel structures */ 1974 /* update fd-related kernel structures */
1444 fd_reify (EV_A); 1975 fd_reify (EV_A);
1445 1976
1446 /* calculate blocking time */ 1977 /* calculate blocking time */
1447 { 1978 {
1448 ev_tstamp block; 1979 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.;
1449 1981
1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1451 block = 0.; /* do not block at all */
1452 else
1453 { 1983 {
1454 /* update time to cancel out callback processing overhead */ 1984 /* update time to cancel out callback processing overhead */
1455 time_update (EV_A_ 1e100); 1985 time_update (EV_A_ 1e100);
1456 1986
1457 block = MAX_BLOCKTIME; 1987 waittime = MAX_BLOCKTIME;
1458 1988
1459 if (timercnt) 1989 if (timercnt)
1460 { 1990 {
1461 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1462 if (block > to) block = to; 1992 if (waittime > to) waittime = to;
1463 } 1993 }
1464 1994
1465#if EV_PERIODIC_ENABLE 1995#if EV_PERIODIC_ENABLE
1466 if (periodiccnt) 1996 if (periodiccnt)
1467 { 1997 {
1468 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1469 if (block > to) block = to; 1999 if (waittime > to) waittime = to;
1470 } 2000 }
1471#endif 2001#endif
1472 2002
1473 if (expect_false (block < 0.)) block = 0.; 2003 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime;
2005
2006 sleeptime = waittime - backend_fudge;
2007
2008 if (expect_true (sleeptime > io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 {
2013 ev_sleep (sleeptime);
2014 waittime -= sleeptime;
2015 }
1474 } 2016 }
1475 2017
1476 ++loop_count; 2018 ++loop_count;
1477 backend_poll (EV_A_ block); 2019 backend_poll (EV_A_ waittime);
1478 2020
1479 /* update ev_rt_now, do magic */ 2021 /* update ev_rt_now, do magic */
1480 time_update (EV_A_ block); 2022 time_update (EV_A_ waittime + sleeptime);
1481 } 2023 }
1482 2024
1483 /* queue pending timers and reschedule them */ 2025 /* queue pending timers and reschedule them */
1484 timers_reify (EV_A); /* relative timers called last */ 2026 timers_reify (EV_A); /* relative timers called last */
1485#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
… …
1494 /* queue check watchers, to be executed first */ 2036 /* queue check watchers, to be executed first */
1495 if (expect_false (checkcnt)) 2037 if (expect_false (checkcnt))
1496 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1497 2039
1498 call_pending (EV_A); 2040 call_pending (EV_A);
1499
1500 } 2041 }
1501 while (expect_true (activecnt && !loop_done)); 2042 while (expect_true (
2043 activecnt
2044 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2046 ));
1502 2047
1503 if (loop_done == EVUNLOOP_ONE) 2048 if (loop_done == EVUNLOOP_ONE)
1504 loop_done = EVUNLOOP_CANCEL; 2049 loop_done = EVUNLOOP_CANCEL;
1505} 2050}
1506 2051
… …
1595 if (expect_false (ev_is_active (w))) 2140 if (expect_false (ev_is_active (w)))
1596 return; 2141 return;
1597 2142
1598 assert (("ev_io_start called with negative fd", fd >= 0)); 2143 assert (("ev_io_start called with negative fd", fd >= 0));
1599 2144
2145 EV_FREQUENT_CHECK;
2146
1600 ev_start (EV_A_ (W)w, 1); 2147 ev_start (EV_A_ (W)w, 1);
1601 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1602 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2149 wlist_add (&anfds[fd].head, (WL)w);
1603 2150
1604 fd_change (EV_A_ fd); 2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
2152 w->events &= ~EV_IOFDSET;
2153
2154 EV_FREQUENT_CHECK;
1605} 2155}
1606 2156
1607void noinline 2157void noinline
1608ev_io_stop (EV_P_ ev_io *w) 2158ev_io_stop (EV_P_ ev_io *w)
1609{ 2159{
1610 clear_pending (EV_A_ (W)w); 2160 clear_pending (EV_A_ (W)w);
1611 if (expect_false (!ev_is_active (w))) 2161 if (expect_false (!ev_is_active (w)))
1612 return; 2162 return;
1613 2163
1614 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1615 2165
2166 EV_FREQUENT_CHECK;
2167
1616 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2168 wlist_del (&anfds[w->fd].head, (WL)w);
1617 ev_stop (EV_A_ (W)w); 2169 ev_stop (EV_A_ (W)w);
1618 2170
1619 fd_change (EV_A_ w->fd); 2171 fd_change (EV_A_ w->fd, 1);
2172
2173 EV_FREQUENT_CHECK;
1620} 2174}
1621 2175
1622void noinline 2176void noinline
1623ev_timer_start (EV_P_ ev_timer *w) 2177ev_timer_start (EV_P_ ev_timer *w)
1624{ 2178{
1625 if (expect_false (ev_is_active (w))) 2179 if (expect_false (ev_is_active (w)))
1626 return; 2180 return;
1627 2181
1628 ((WT)w)->at += mn_now; 2182 ev_at (w) += mn_now;
1629 2183
1630 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1631 2185
2186 EV_FREQUENT_CHECK;
2187
2188 ++timercnt;
1632 ev_start (EV_A_ (W)w, ++timercnt); 2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1633 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2190 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1634 timers [timercnt - 1] = (WT)w; 2191 ANHE_w (timers [ev_active (w)]) = (WT)w;
1635 upheap (timers, timercnt - 1); 2192 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w));
1636 2194
2195 EV_FREQUENT_CHECK;
2196
1637 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1638} 2198}
1639 2199
1640void noinline 2200void noinline
1641ev_timer_stop (EV_P_ ev_timer *w) 2201ev_timer_stop (EV_P_ ev_timer *w)
1642{ 2202{
1643 clear_pending (EV_A_ (W)w); 2203 clear_pending (EV_A_ (W)w);
1644 if (expect_false (!ev_is_active (w))) 2204 if (expect_false (!ev_is_active (w)))
1645 return; 2205 return;
1646 2206
1647 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2207 EV_FREQUENT_CHECK;
1648 2208
1649 { 2209 {
1650 int active = ((W)w)->active; 2210 int active = ev_active (w);
1651 2211
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213
2214 --timercnt;
2215
1652 if (expect_true (--active < --timercnt)) 2216 if (expect_true (active < timercnt + HEAP0))
1653 { 2217 {
1654 timers [active] = timers [timercnt]; 2218 timers [active] = timers [timercnt + HEAP0];
1655 adjustheap (timers, timercnt, active); 2219 adjustheap (timers, timercnt, active);
1656 } 2220 }
1657 } 2221 }
1658 2222
1659 ((WT)w)->at -= mn_now; 2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now;
1660 2226
1661 ev_stop (EV_A_ (W)w); 2227 ev_stop (EV_A_ (W)w);
1662} 2228}
1663 2229
1664void noinline 2230void noinline
1665ev_timer_again (EV_P_ ev_timer *w) 2231ev_timer_again (EV_P_ ev_timer *w)
1666{ 2232{
2233 EV_FREQUENT_CHECK;
2234
1667 if (ev_is_active (w)) 2235 if (ev_is_active (w))
1668 { 2236 {
1669 if (w->repeat) 2237 if (w->repeat)
1670 { 2238 {
1671 ((WT)w)->at = mn_now + w->repeat; 2239 ev_at (w) = mn_now + w->repeat;
2240 ANHE_at_cache (timers [ev_active (w)]);
1672 adjustheap (timers, timercnt, ((W)w)->active - 1); 2241 adjustheap (timers, timercnt, ev_active (w));
1673 } 2242 }
1674 else 2243 else
1675 ev_timer_stop (EV_A_ w); 2244 ev_timer_stop (EV_A_ w);
1676 } 2245 }
1677 else if (w->repeat) 2246 else if (w->repeat)
1678 { 2247 {
1679 w->at = w->repeat; 2248 ev_at (w) = w->repeat;
1680 ev_timer_start (EV_A_ w); 2249 ev_timer_start (EV_A_ w);
1681 } 2250 }
2251
2252 EV_FREQUENT_CHECK;
1682} 2253}
1683 2254
1684#if EV_PERIODIC_ENABLE 2255#if EV_PERIODIC_ENABLE
1685void noinline 2256void noinline
1686ev_periodic_start (EV_P_ ev_periodic *w) 2257ev_periodic_start (EV_P_ ev_periodic *w)
1687{ 2258{
1688 if (expect_false (ev_is_active (w))) 2259 if (expect_false (ev_is_active (w)))
1689 return; 2260 return;
1690 2261
1691 if (w->reschedule_cb) 2262 if (w->reschedule_cb)
1692 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 2264 else if (w->interval)
1694 { 2265 {
1695 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1696 /* this formula differs from the one in periodic_reify because we do not always round up */ 2267 /* this formula differs from the one in periodic_reify because we do not always round up */
1697 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1698 } 2269 }
1699 else 2270 else
1700 ((WT)w)->at = w->offset; 2271 ev_at (w) = w->offset;
1701 2272
2273 EV_FREQUENT_CHECK;
2274
2275 ++periodiccnt;
1702 ev_start (EV_A_ (W)w, ++periodiccnt); 2276 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1703 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2277 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1704 periodics [periodiccnt - 1] = (WT)w; 2278 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1705 upheap (periodics, periodiccnt - 1); 2279 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w));
1706 2281
2282 EV_FREQUENT_CHECK;
2283
1707 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1708} 2285}
1709 2286
1710void noinline 2287void noinline
1711ev_periodic_stop (EV_P_ ev_periodic *w) 2288ev_periodic_stop (EV_P_ ev_periodic *w)
1712{ 2289{
1713 clear_pending (EV_A_ (W)w); 2290 clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 2291 if (expect_false (!ev_is_active (w)))
1715 return; 2292 return;
1716 2293
1717 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2294 EV_FREQUENT_CHECK;
1718 2295
1719 { 2296 {
1720 int active = ((W)w)->active; 2297 int active = ev_active (w);
1721 2298
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300
2301 --periodiccnt;
2302
1722 if (expect_true (--active < --periodiccnt)) 2303 if (expect_true (active < periodiccnt + HEAP0))
1723 { 2304 {
1724 periodics [active] = periodics [periodiccnt]; 2305 periodics [active] = periodics [periodiccnt + HEAP0];
1725 adjustheap (periodics, periodiccnt, active); 2306 adjustheap (periodics, periodiccnt, active);
1726 } 2307 }
1727 } 2308 }
1728 2309
2310 EV_FREQUENT_CHECK;
2311
1729 ev_stop (EV_A_ (W)w); 2312 ev_stop (EV_A_ (W)w);
1730} 2313}
1731 2314
1732void noinline 2315void noinline
1733ev_periodic_again (EV_P_ ev_periodic *w) 2316ev_periodic_again (EV_P_ ev_periodic *w)
… …
1750#endif 2333#endif
1751 if (expect_false (ev_is_active (w))) 2334 if (expect_false (ev_is_active (w)))
1752 return; 2335 return;
1753 2336
1754 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2338
2339 evpipe_init (EV_A);
2340
2341 EV_FREQUENT_CHECK;
1755 2342
1756 { 2343 {
1757#ifndef _WIN32 2344#ifndef _WIN32
1758 sigset_t full, prev; 2345 sigset_t full, prev;
1759 sigfillset (&full); 2346 sigfillset (&full);
… …
1766 sigprocmask (SIG_SETMASK, &prev, 0); 2353 sigprocmask (SIG_SETMASK, &prev, 0);
1767#endif 2354#endif
1768 } 2355 }
1769 2356
1770 ev_start (EV_A_ (W)w, 1); 2357 ev_start (EV_A_ (W)w, 1);
1771 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2358 wlist_add (&signals [w->signum - 1].head, (WL)w);
1772 2359
1773 if (!((WL)w)->next) 2360 if (!((WL)w)->next)
1774 { 2361 {
1775#if _WIN32 2362#if _WIN32
1776 signal (w->signum, sighandler); 2363 signal (w->signum, ev_sighandler);
1777#else 2364#else
1778 struct sigaction sa; 2365 struct sigaction sa;
1779 sa.sa_handler = sighandler; 2366 sa.sa_handler = ev_sighandler;
1780 sigfillset (&sa.sa_mask); 2367 sigfillset (&sa.sa_mask);
1781 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1782 sigaction (w->signum, &sa, 0); 2369 sigaction (w->signum, &sa, 0);
1783#endif 2370#endif
1784 } 2371 }
2372
2373 EV_FREQUENT_CHECK;
1785} 2374}
1786 2375
1787void noinline 2376void noinline
1788ev_signal_stop (EV_P_ ev_signal *w) 2377ev_signal_stop (EV_P_ ev_signal *w)
1789{ 2378{
1790 clear_pending (EV_A_ (W)w); 2379 clear_pending (EV_A_ (W)w);
1791 if (expect_false (!ev_is_active (w))) 2380 if (expect_false (!ev_is_active (w)))
1792 return; 2381 return;
1793 2382
2383 EV_FREQUENT_CHECK;
2384
1794 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2385 wlist_del (&signals [w->signum - 1].head, (WL)w);
1795 ev_stop (EV_A_ (W)w); 2386 ev_stop (EV_A_ (W)w);
1796 2387
1797 if (!signals [w->signum - 1].head) 2388 if (!signals [w->signum - 1].head)
1798 signal (w->signum, SIG_DFL); 2389 signal (w->signum, SIG_DFL);
2390
2391 EV_FREQUENT_CHECK;
1799} 2392}
1800 2393
1801void 2394void
1802ev_child_start (EV_P_ ev_child *w) 2395ev_child_start (EV_P_ ev_child *w)
1803{ 2396{
… …
1805 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1806#endif 2399#endif
1807 if (expect_false (ev_is_active (w))) 2400 if (expect_false (ev_is_active (w)))
1808 return; 2401 return;
1809 2402
2403 EV_FREQUENT_CHECK;
2404
1810 ev_start (EV_A_ (W)w, 1); 2405 ev_start (EV_A_ (W)w, 1);
1811 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2407
2408 EV_FREQUENT_CHECK;
1812} 2409}
1813 2410
1814void 2411void
1815ev_child_stop (EV_P_ ev_child *w) 2412ev_child_stop (EV_P_ ev_child *w)
1816{ 2413{
1817 clear_pending (EV_A_ (W)w); 2414 clear_pending (EV_A_ (W)w);
1818 if (expect_false (!ev_is_active (w))) 2415 if (expect_false (!ev_is_active (w)))
1819 return; 2416 return;
1820 2417
2418 EV_FREQUENT_CHECK;
2419
1821 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1822 ev_stop (EV_A_ (W)w); 2421 ev_stop (EV_A_ (W)w);
2422
2423 EV_FREQUENT_CHECK;
1823} 2424}
1824 2425
1825#if EV_STAT_ENABLE 2426#if EV_STAT_ENABLE
1826 2427
1827# ifdef _WIN32 2428# ifdef _WIN32
… …
1845 if (w->wd < 0) 2446 if (w->wd < 0)
1846 { 2447 {
1847 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1848 2449
1849 /* monitor some parent directory for speedup hints */ 2450 /* monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */
2452 /* but an efficiency issue only */
1850 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1851 { 2454 {
1852 char path [4096]; 2455 char path [4096];
1853 strcpy (path, w->path); 2456 strcpy (path, w->path);
1854 2457
… …
1894 2497
1895static void noinline 2498static void noinline
1896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1897{ 2500{
1898 if (slot < 0) 2501 if (slot < 0)
1899 /* overflow, need to check for all hahs slots */ 2502 /* overflow, need to check for all hash slots */
1900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1901 infy_wd (EV_A_ slot, wd, ev); 2504 infy_wd (EV_A_ slot, wd, ev);
1902 else 2505 else
1903 { 2506 {
1904 WL w_; 2507 WL w_;
… …
1938infy_init (EV_P) 2541infy_init (EV_P)
1939{ 2542{
1940 if (fs_fd != -2) 2543 if (fs_fd != -2)
1941 return; 2544 return;
1942 2545
2546 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */
2549 {
2550 struct utsname buf;
2551 int major, minor, micro;
2552
2553 fs_fd = -1;
2554
2555 if (uname (&buf))
2556 return;
2557
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
1943 fs_fd = inotify_init (); 2567 fs_fd = inotify_init ();
1944 2568
1945 if (fs_fd >= 0) 2569 if (fs_fd >= 0)
1946 { 2570 {
1947 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
… …
1976 if (fs_fd >= 0) 2600 if (fs_fd >= 0)
1977 infy_add (EV_A_ w); /* re-add, no matter what */ 2601 infy_add (EV_A_ w); /* re-add, no matter what */
1978 else 2602 else
1979 ev_timer_start (EV_A_ &w->timer); 2603 ev_timer_start (EV_A_ &w->timer);
1980 } 2604 }
1981
1982 } 2605 }
1983} 2606}
1984 2607
2608#endif
2609
2610#ifdef _WIN32
2611# define EV_LSTAT(p,b) _stati64 (p, b)
2612#else
2613# define EV_LSTAT(p,b) lstat (p, b)
1985#endif 2614#endif
1986 2615
1987void 2616void
1988ev_stat_stat (EV_P_ ev_stat *w) 2617ev_stat_stat (EV_P_ ev_stat *w)
1989{ 2618{
… …
2016 || w->prev.st_atime != w->attr.st_atime 2645 || w->prev.st_atime != w->attr.st_atime
2017 || w->prev.st_mtime != w->attr.st_mtime 2646 || w->prev.st_mtime != w->attr.st_mtime
2018 || w->prev.st_ctime != w->attr.st_ctime 2647 || w->prev.st_ctime != w->attr.st_ctime
2019 ) { 2648 ) {
2020 #if EV_USE_INOTIFY 2649 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0)
2651 {
2021 infy_del (EV_A_ w); 2652 infy_del (EV_A_ w);
2022 infy_add (EV_A_ w); 2653 infy_add (EV_A_ w);
2023 ev_stat_stat (EV_A_ w); /* avoid race... */ 2654 ev_stat_stat (EV_A_ w); /* avoid race... */
2655 }
2024 #endif 2656 #endif
2025 2657
2026 ev_feed_event (EV_A_ w, EV_STAT); 2658 ev_feed_event (EV_A_ w, EV_STAT);
2027 } 2659 }
2028} 2660}
… …
2053 else 2685 else
2054#endif 2686#endif
2055 ev_timer_start (EV_A_ &w->timer); 2687 ev_timer_start (EV_A_ &w->timer);
2056 2688
2057 ev_start (EV_A_ (W)w, 1); 2689 ev_start (EV_A_ (W)w, 1);
2690
2691 EV_FREQUENT_CHECK;
2058} 2692}
2059 2693
2060void 2694void
2061ev_stat_stop (EV_P_ ev_stat *w) 2695ev_stat_stop (EV_P_ ev_stat *w)
2062{ 2696{
2063 clear_pending (EV_A_ (W)w); 2697 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 2698 if (expect_false (!ev_is_active (w)))
2065 return; 2699 return;
2066 2700
2701 EV_FREQUENT_CHECK;
2702
2067#if EV_USE_INOTIFY 2703#if EV_USE_INOTIFY
2068 infy_del (EV_A_ w); 2704 infy_del (EV_A_ w);
2069#endif 2705#endif
2070 ev_timer_stop (EV_A_ &w->timer); 2706 ev_timer_stop (EV_A_ &w->timer);
2071 2707
2072 ev_stop (EV_A_ (W)w); 2708 ev_stop (EV_A_ (W)w);
2709
2710 EV_FREQUENT_CHECK;
2073} 2711}
2074#endif 2712#endif
2075 2713
2076#if EV_IDLE_ENABLE 2714#if EV_IDLE_ENABLE
2077void 2715void
… …
2079{ 2717{
2080 if (expect_false (ev_is_active (w))) 2718 if (expect_false (ev_is_active (w)))
2081 return; 2719 return;
2082 2720
2083 pri_adjust (EV_A_ (W)w); 2721 pri_adjust (EV_A_ (W)w);
2722
2723 EV_FREQUENT_CHECK;
2084 2724
2085 { 2725 {
2086 int active = ++idlecnt [ABSPRI (w)]; 2726 int active = ++idlecnt [ABSPRI (w)];
2087 2727
2088 ++idleall; 2728 ++idleall;
2089 ev_start (EV_A_ (W)w, active); 2729 ev_start (EV_A_ (W)w, active);
2090 2730
2091 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2731 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2092 idles [ABSPRI (w)][active - 1] = w; 2732 idles [ABSPRI (w)][active - 1] = w;
2093 } 2733 }
2734
2735 EV_FREQUENT_CHECK;
2094} 2736}
2095 2737
2096void 2738void
2097ev_idle_stop (EV_P_ ev_idle *w) 2739ev_idle_stop (EV_P_ ev_idle *w)
2098{ 2740{
2099 clear_pending (EV_A_ (W)w); 2741 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w))) 2742 if (expect_false (!ev_is_active (w)))
2101 return; 2743 return;
2102 2744
2745 EV_FREQUENT_CHECK;
2746
2103 { 2747 {
2104 int active = ((W)w)->active; 2748 int active = ev_active (w);
2105 2749
2106 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2750 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2107 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2751 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2108 2752
2109 ev_stop (EV_A_ (W)w); 2753 ev_stop (EV_A_ (W)w);
2110 --idleall; 2754 --idleall;
2111 } 2755 }
2756
2757 EV_FREQUENT_CHECK;
2112} 2758}
2113#endif 2759#endif
2114 2760
2115void 2761void
2116ev_prepare_start (EV_P_ ev_prepare *w) 2762ev_prepare_start (EV_P_ ev_prepare *w)
2117{ 2763{
2118 if (expect_false (ev_is_active (w))) 2764 if (expect_false (ev_is_active (w)))
2119 return; 2765 return;
2766
2767 EV_FREQUENT_CHECK;
2120 2768
2121 ev_start (EV_A_ (W)w, ++preparecnt); 2769 ev_start (EV_A_ (W)w, ++preparecnt);
2122 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2770 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2123 prepares [preparecnt - 1] = w; 2771 prepares [preparecnt - 1] = w;
2772
2773 EV_FREQUENT_CHECK;
2124} 2774}
2125 2775
2126void 2776void
2127ev_prepare_stop (EV_P_ ev_prepare *w) 2777ev_prepare_stop (EV_P_ ev_prepare *w)
2128{ 2778{
2129 clear_pending (EV_A_ (W)w); 2779 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w))) 2780 if (expect_false (!ev_is_active (w)))
2131 return; 2781 return;
2132 2782
2783 EV_FREQUENT_CHECK;
2784
2133 { 2785 {
2134 int active = ((W)w)->active; 2786 int active = ev_active (w);
2787
2135 prepares [active - 1] = prepares [--preparecnt]; 2788 prepares [active - 1] = prepares [--preparecnt];
2136 ((W)prepares [active - 1])->active = active; 2789 ev_active (prepares [active - 1]) = active;
2137 } 2790 }
2138 2791
2139 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2793
2794 EV_FREQUENT_CHECK;
2140} 2795}
2141 2796
2142void 2797void
2143ev_check_start (EV_P_ ev_check *w) 2798ev_check_start (EV_P_ ev_check *w)
2144{ 2799{
2145 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2146 return; 2801 return;
2802
2803 EV_FREQUENT_CHECK;
2147 2804
2148 ev_start (EV_A_ (W)w, ++checkcnt); 2805 ev_start (EV_A_ (W)w, ++checkcnt);
2149 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2806 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2150 checks [checkcnt - 1] = w; 2807 checks [checkcnt - 1] = w;
2808
2809 EV_FREQUENT_CHECK;
2151} 2810}
2152 2811
2153void 2812void
2154ev_check_stop (EV_P_ ev_check *w) 2813ev_check_stop (EV_P_ ev_check *w)
2155{ 2814{
2156 clear_pending (EV_A_ (W)w); 2815 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w))) 2816 if (expect_false (!ev_is_active (w)))
2158 return; 2817 return;
2159 2818
2819 EV_FREQUENT_CHECK;
2820
2160 { 2821 {
2161 int active = ((W)w)->active; 2822 int active = ev_active (w);
2823
2162 checks [active - 1] = checks [--checkcnt]; 2824 checks [active - 1] = checks [--checkcnt];
2163 ((W)checks [active - 1])->active = active; 2825 ev_active (checks [active - 1]) = active;
2164 } 2826 }
2165 2827
2166 ev_stop (EV_A_ (W)w); 2828 ev_stop (EV_A_ (W)w);
2829
2830 EV_FREQUENT_CHECK;
2167} 2831}
2168 2832
2169#if EV_EMBED_ENABLE 2833#if EV_EMBED_ENABLE
2170void noinline 2834void noinline
2171ev_embed_sweep (EV_P_ ev_embed *w) 2835ev_embed_sweep (EV_P_ ev_embed *w)
2172{ 2836{
2173 ev_loop (w->loop, EVLOOP_NONBLOCK); 2837 ev_loop (w->other, EVLOOP_NONBLOCK);
2174} 2838}
2175 2839
2176static void 2840static void
2177embed_cb (EV_P_ ev_io *io, int revents) 2841embed_io_cb (EV_P_ ev_io *io, int revents)
2178{ 2842{
2179 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2180 2844
2181 if (ev_cb (w)) 2845 if (ev_cb (w))
2182 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2846 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2183 else 2847 else
2184 ev_embed_sweep (loop, w); 2848 ev_loop (w->other, EVLOOP_NONBLOCK);
2185} 2849}
2850
2851static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855
2856 {
2857 struct ev_loop *loop = w->other;
2858
2859 while (fdchangecnt)
2860 {
2861 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2863 }
2864 }
2865}
2866
2867static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871
2872 {
2873 struct ev_loop *loop = w->other;
2874
2875 ev_loop_fork (EV_A);
2876 }
2877}
2878
2879#if 0
2880static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2882{
2883 ev_idle_stop (EV_A_ idle);
2884}
2885#endif
2186 2886
2187void 2887void
2188ev_embed_start (EV_P_ ev_embed *w) 2888ev_embed_start (EV_P_ ev_embed *w)
2189{ 2889{
2190 if (expect_false (ev_is_active (w))) 2890 if (expect_false (ev_is_active (w)))
2191 return; 2891 return;
2192 2892
2193 { 2893 {
2194 struct ev_loop *loop = w->loop; 2894 struct ev_loop *loop = w->other;
2195 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2196 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2197 } 2897 }
2898
2899 EV_FREQUENT_CHECK;
2198 2900
2199 ev_set_priority (&w->io, ev_priority (w)); 2901 ev_set_priority (&w->io, ev_priority (w));
2200 ev_io_start (EV_A_ &w->io); 2902 ev_io_start (EV_A_ &w->io);
2201 2903
2904 ev_prepare_init (&w->prepare, embed_prepare_cb);
2905 ev_set_priority (&w->prepare, EV_MINPRI);
2906 ev_prepare_start (EV_A_ &w->prepare);
2907
2908 ev_fork_init (&w->fork, embed_fork_cb);
2909 ev_fork_start (EV_A_ &w->fork);
2910
2911 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2912
2202 ev_start (EV_A_ (W)w, 1); 2913 ev_start (EV_A_ (W)w, 1);
2914
2915 EV_FREQUENT_CHECK;
2203} 2916}
2204 2917
2205void 2918void
2206ev_embed_stop (EV_P_ ev_embed *w) 2919ev_embed_stop (EV_P_ ev_embed *w)
2207{ 2920{
2208 clear_pending (EV_A_ (W)w); 2921 clear_pending (EV_A_ (W)w);
2209 if (expect_false (!ev_is_active (w))) 2922 if (expect_false (!ev_is_active (w)))
2210 return; 2923 return;
2211 2924
2925 EV_FREQUENT_CHECK;
2926
2212 ev_io_stop (EV_A_ &w->io); 2927 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork);
2213 2930
2214 ev_stop (EV_A_ (W)w); 2931 EV_FREQUENT_CHECK;
2215} 2932}
2216#endif 2933#endif
2217 2934
2218#if EV_FORK_ENABLE 2935#if EV_FORK_ENABLE
2219void 2936void
2220ev_fork_start (EV_P_ ev_fork *w) 2937ev_fork_start (EV_P_ ev_fork *w)
2221{ 2938{
2222 if (expect_false (ev_is_active (w))) 2939 if (expect_false (ev_is_active (w)))
2223 return; 2940 return;
2941
2942 EV_FREQUENT_CHECK;
2224 2943
2225 ev_start (EV_A_ (W)w, ++forkcnt); 2944 ev_start (EV_A_ (W)w, ++forkcnt);
2226 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2945 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2227 forks [forkcnt - 1] = w; 2946 forks [forkcnt - 1] = w;
2947
2948 EV_FREQUENT_CHECK;
2228} 2949}
2229 2950
2230void 2951void
2231ev_fork_stop (EV_P_ ev_fork *w) 2952ev_fork_stop (EV_P_ ev_fork *w)
2232{ 2953{
2233 clear_pending (EV_A_ (W)w); 2954 clear_pending (EV_A_ (W)w);
2234 if (expect_false (!ev_is_active (w))) 2955 if (expect_false (!ev_is_active (w)))
2235 return; 2956 return;
2236 2957
2958 EV_FREQUENT_CHECK;
2959
2237 { 2960 {
2238 int active = ((W)w)->active; 2961 int active = ev_active (w);
2962
2239 forks [active - 1] = forks [--forkcnt]; 2963 forks [active - 1] = forks [--forkcnt];
2240 ((W)forks [active - 1])->active = active; 2964 ev_active (forks [active - 1]) = active;
2241 } 2965 }
2242 2966
2243 ev_stop (EV_A_ (W)w); 2967 ev_stop (EV_A_ (W)w);
2968
2969 EV_FREQUENT_CHECK;
2970}
2971#endif
2972
2973#if EV_ASYNC_ENABLE
2974void
2975ev_async_start (EV_P_ ev_async *w)
2976{
2977 if (expect_false (ev_is_active (w)))
2978 return;
2979
2980 evpipe_init (EV_A);
2981
2982 EV_FREQUENT_CHECK;
2983
2984 ev_start (EV_A_ (W)w, ++asynccnt);
2985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2986 asyncs [asynccnt - 1] = w;
2987
2988 EV_FREQUENT_CHECK;
2989}
2990
2991void
2992ev_async_stop (EV_P_ ev_async *w)
2993{
2994 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w)))
2996 return;
2997
2998 EV_FREQUENT_CHECK;
2999
3000 {
3001 int active = ev_active (w);
3002
3003 asyncs [active - 1] = asyncs [--asynccnt];
3004 ev_active (asyncs [active - 1]) = active;
3005 }
3006
3007 ev_stop (EV_A_ (W)w);
3008
3009 EV_FREQUENT_CHECK;
3010}
3011
3012void
3013ev_async_send (EV_P_ ev_async *w)
3014{
3015 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync);
2244} 3017}
2245#endif 3018#endif
2246 3019
2247/*****************************************************************************/ 3020/*****************************************************************************/
2248 3021
… …
2258once_cb (EV_P_ struct ev_once *once, int revents) 3031once_cb (EV_P_ struct ev_once *once, int revents)
2259{ 3032{
2260 void (*cb)(int revents, void *arg) = once->cb; 3033 void (*cb)(int revents, void *arg) = once->cb;
2261 void *arg = once->arg; 3034 void *arg = once->arg;
2262 3035
2263 ev_io_stop (EV_A_ &once->io); 3036 ev_io_stop (EV_A_ &once->io);
2264 ev_timer_stop (EV_A_ &once->to); 3037 ev_timer_stop (EV_A_ &once->to);
2265 ev_free (once); 3038 ev_free (once);
2266 3039
2267 cb (revents, arg); 3040 cb (revents, arg);
2268} 3041}
2269 3042
2270static void 3043static void
2271once_cb_io (EV_P_ ev_io *w, int revents) 3044once_cb_io (EV_P_ ev_io *w, int revents)
2272{ 3045{
2273 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3046 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3047
3048 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2274} 3049}
2275 3050
2276static void 3051static void
2277once_cb_to (EV_P_ ev_timer *w, int revents) 3052once_cb_to (EV_P_ ev_timer *w, int revents)
2278{ 3053{
2279 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3054 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3055
3056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2280} 3057}
2281 3058
2282void 3059void
2283ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2284{ 3061{
… …
2306 ev_timer_set (&once->to, timeout, 0.); 3083 ev_timer_set (&once->to, timeout, 0.);
2307 ev_timer_start (EV_A_ &once->to); 3084 ev_timer_start (EV_A_ &once->to);
2308 } 3085 }
2309} 3086}
2310 3087
3088#if EV_MULTIPLICITY
3089 #include "ev_wrap.h"
3090#endif
3091
2311#ifdef __cplusplus 3092#ifdef __cplusplus
2312} 3093}
2313#endif 3094#endif
2314 3095

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