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Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs.
Revision 1.252 by root, Thu May 22 03:43:32 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
… …
51# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
53# endif 62# endif
54# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 64# define EV_USE_REALTIME 0
65# endif
66# endif
67
68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
56# endif 73# endif
57# endif 74# endif
58 75
59# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 111# else
95# define EV_USE_PORT 0 112# define EV_USE_PORT 0
96# endif 113# endif
97# endif 114# endif
98 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
99#endif 132#endif
100 133
101#include <math.h> 134#include <math.h>
102#include <stdlib.h> 135#include <stdlib.h>
103#include <fcntl.h> 136#include <fcntl.h>
… …
109#include <errno.h> 142#include <errno.h>
110#include <sys/types.h> 143#include <sys/types.h>
111#include <time.h> 144#include <time.h>
112 145
113#include <signal.h> 146#include <signal.h>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
114 153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <sys/time.h> 155# include <sys/time.h>
117# include <sys/wait.h> 156# include <sys/wait.h>
118# include <unistd.h> 157# include <unistd.h>
… …
122# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
124# endif 163# endif
125#endif 164#endif
126 165
127/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
128 167
129#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
130# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
131#endif 170#endif
132 171
133#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
135#endif 178#endif
136 179
137#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
139#endif 182#endif
… …
145# define EV_USE_POLL 1 188# define EV_USE_POLL 1
146# endif 189# endif
147#endif 190#endif
148 191
149#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
150# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
151#endif 198#endif
152 199
153#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
155#endif 202#endif
156 203
157#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
159#endif 214#endif
160 215
161#ifndef EV_PID_HASHSIZE 216#ifndef EV_PID_HASHSIZE
162# if EV_MINIMAL 217# if EV_MINIMAL
163# define EV_PID_HASHSIZE 1 218# define EV_PID_HASHSIZE 1
164# else 219# else
165# define EV_PID_HASHSIZE 16 220# define EV_PID_HASHSIZE 16
166# endif 221# endif
167#endif 222#endif
168 223
169/**/ 224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240#if 0 /* debugging */
241# define EV_VERIFY 3
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL
248#endif
249
250#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL
252#endif
253
254#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL
256#endif
257
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */
170 259
171#ifndef CLOCK_MONOTONIC 260#ifndef CLOCK_MONOTONIC
172# undef EV_USE_MONOTONIC 261# undef EV_USE_MONOTONIC
173# define EV_USE_MONOTONIC 0 262# define EV_USE_MONOTONIC 0
174#endif 263#endif
… …
176#ifndef CLOCK_REALTIME 265#ifndef CLOCK_REALTIME
177# undef EV_USE_REALTIME 266# undef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 267# define EV_USE_REALTIME 0
179#endif 268#endif
180 269
270#if !EV_STAT_ENABLE
271# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0
273#endif
274
275#if !EV_USE_NANOSLEEP
276# ifndef _WIN32
277# include <sys/select.h>
278# endif
279#endif
280
281#if EV_USE_INOTIFY
282# include <sys/inotify.h>
283#endif
284
181#if EV_SELECT_IS_WINSOCKET 285#if EV_SELECT_IS_WINSOCKET
182# include <winsock.h> 286# include <winsock.h>
183#endif 287#endif
184 288
289#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h>
292# ifdef __cplusplus
293extern "C" {
294# endif
295int eventfd (unsigned int initval, int flags);
296# ifdef __cplusplus
297}
298# endif
299#endif
300
185/**/ 301/**/
302
303#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
305#else
306# define EV_FREQUENT_CHECK do { } while (0)
307#endif
308
309/*
310 * This is used to avoid floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
186 318
187#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
188#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
189/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
190 322
191#ifdef EV_H
192# include EV_H
193#else
194# include "ev.h"
195#endif
196
197#if __GNUC__ >= 3 323#if __GNUC__ >= 4
198# define expect(expr,value) __builtin_expect ((expr),(value)) 324# define expect(expr,value) __builtin_expect ((expr),(value))
199# define inline_size static inline /* inline for codesize */
200# if EV_MINIMAL
201# define noinline __attribute__ ((noinline)) 325# define noinline __attribute__ ((noinline))
202# define inline_speed static noinline
203# else
204# define noinline
205# define inline_speed static inline
206# endif
207#else 326#else
208# define expect(expr,value) (expr) 327# define expect(expr,value) (expr)
209# define inline_speed static
210# define inline_size static
211# define noinline 328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif
212#endif 332#endif
213 333
214#define expect_false(expr) expect ((expr) != 0, 0) 334#define expect_false(expr) expect ((expr) != 0, 0)
215#define expect_true(expr) expect ((expr) != 0, 1) 335#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline
337
338#if EV_MINIMAL
339# define inline_speed static noinline
340#else
341# define inline_speed static inline
342#endif
216 343
217#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218#define ABSPRI(w) ((w)->priority - EV_MINPRI) 345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219 346
220#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 347#define EMPTY /* required for microsofts broken pseudo-c compiler */
221#define EMPTY2(a,b) /* used to suppress some warnings */ 348#define EMPTY2(a,b) /* used to suppress some warnings */
222 349
223typedef ev_watcher *W; 350typedef ev_watcher *W;
224typedef ev_watcher_list *WL; 351typedef ev_watcher_list *WL;
225typedef ev_watcher_time *WT; 352typedef ev_watcher_time *WT;
226 353
354#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at
356
357#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
227static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
361#endif
228 362
229#ifdef _WIN32 363#ifdef _WIN32
230# include "ev_win32.c" 364# include "ev_win32.c"
231#endif 365#endif
232 366
… …
253 perror (msg); 387 perror (msg);
254 abort (); 388 abort ();
255 } 389 }
256} 390}
257 391
392static void *
393ev_realloc_emul (void *ptr, long size)
394{
395 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and
397 * the single unix specification, so work around them here.
398 */
399
400 if (size)
401 return realloc (ptr, size);
402
403 free (ptr);
404 return 0;
405}
406
258static void *(*alloc)(void *ptr, size_t size) = realloc; 407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
259 408
260void 409void
261ev_set_allocator (void *(*cb)(void *ptr, size_t size)) 410ev_set_allocator (void *(*cb)(void *ptr, long size))
262{ 411{
263 alloc = cb; 412 alloc = cb;
264} 413}
265 414
266inline_speed void * 415inline_speed void *
267ev_realloc (void *ptr, size_t size) 416ev_realloc (void *ptr, long size)
268{ 417{
269 ptr = alloc (ptr, size); 418 ptr = alloc (ptr, size);
270 419
271 if (!ptr && size) 420 if (!ptr && size)
272 { 421 {
273 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size); 422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274 abort (); 423 abort ();
275 } 424 }
276 425
277 return ptr; 426 return ptr;
278} 427}
… …
295typedef struct 444typedef struct
296{ 445{
297 W w; 446 W w;
298 int events; 447 int events;
299} ANPENDING; 448} ANPENDING;
449
450#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */
452typedef struct
453{
454 WL head;
455} ANFS;
456#endif
457
458/* Heap Entry */
459#if EV_HEAP_CACHE_AT
460 typedef struct {
461 ev_tstamp at;
462 WT w;
463 } ANHE;
464
465 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else
469 typedef WT ANHE;
470
471 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he)
474#endif
300 475
301#if EV_MULTIPLICITY 476#if EV_MULTIPLICITY
302 477
303 struct ev_loop 478 struct ev_loop
304 { 479 {
… …
361{ 536{
362 return ev_rt_now; 537 return ev_rt_now;
363} 538}
364#endif 539#endif
365 540
366#define array_roundsize(type,n) (((n) | 4) & ~3) 541void
542ev_sleep (ev_tstamp delay)
543{
544 if (delay > 0.)
545 {
546#if EV_USE_NANOSLEEP
547 struct timespec ts;
548
549 ts.tv_sec = (time_t)delay;
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0);
553#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3));
555#else
556 struct timeval tv;
557
558 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560
561 select (0, 0, 0, 0, &tv);
562#endif
563 }
564}
565
566/*****************************************************************************/
567
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569
570int inline_size
571array_nextsize (int elem, int cur, int cnt)
572{
573 int ncur = cur + 1;
574
575 do
576 ncur <<= 1;
577 while (cnt > ncur);
578
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 {
582 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4;
585 ncur /= elem;
586 }
587
588 return ncur;
589}
590
591static noinline void *
592array_realloc (int elem, void *base, int *cur, int cnt)
593{
594 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur);
596}
367 597
368#define array_needsize(type,base,cur,cnt,init) \ 598#define array_needsize(type,base,cur,cnt,init) \
369 if (expect_false ((cnt) > cur)) \ 599 if (expect_false ((cnt) > (cur))) \
370 { \ 600 { \
371 int newcnt = cur; \ 601 int ocur_ = (cur); \
372 do \ 602 (base) = (type *)array_realloc \
373 { \ 603 (sizeof (type), (base), &(cur), (cnt)); \
374 newcnt = array_roundsize (type, newcnt << 1); \ 604 init ((base) + (ocur_), (cur) - ocur_); \
375 } \
376 while ((cnt) > newcnt); \
377 \
378 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
379 init (base + cur, newcnt - cur); \
380 cur = newcnt; \
381 } 605 }
382 606
607#if 0
383#define array_slim(type,stem) \ 608#define array_slim(type,stem) \
384 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 609 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385 { \ 610 { \
386 stem ## max = array_roundsize (stem ## cnt >> 1); \ 611 stem ## max = array_roundsize (stem ## cnt >> 1); \
387 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 612 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
388 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
389 } 614 }
615#endif
390 616
391#define array_free(stem, idx) \ 617#define array_free(stem, idx) \
392 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393 619
394/*****************************************************************************/ 620/*****************************************************************************/
395 621
396void noinline 622void noinline
397ev_feed_event (EV_P_ void *w, int revents) 623ev_feed_event (EV_P_ void *w, int revents)
398{ 624{
399 W w_ = (W)w; 625 W w_ = (W)w;
626 int pri = ABSPRI (w_);
400 627
401 if (expect_false (w_->pending)) 628 if (expect_false (w_->pending))
629 pendings [pri][w_->pending - 1].events |= revents;
630 else
402 { 631 {
632 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
634 pendings [pri][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 635 pendings [pri][w_->pending - 1].events = revents;
404 return;
405 } 636 }
406
407 w_->pending = ++pendingcnt [ABSPRI (w_)];
408 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411} 637}
412 638
413void inline_size 639void inline_speed
414queue_events (EV_P_ W *events, int eventcnt, int type) 640queue_events (EV_P_ W *events, int eventcnt, int type)
415{ 641{
416 int i; 642 int i;
417 643
418 for (i = 0; i < eventcnt; ++i) 644 for (i = 0; i < eventcnt; ++i)
… …
450} 676}
451 677
452void 678void
453ev_feed_fd_event (EV_P_ int fd, int revents) 679ev_feed_fd_event (EV_P_ int fd, int revents)
454{ 680{
681 if (fd >= 0 && fd < anfdmax)
455 fd_event (EV_A_ fd, revents); 682 fd_event (EV_A_ fd, revents);
456} 683}
457 684
458void inline_size 685void inline_size
459fd_reify (EV_P) 686fd_reify (EV_P)
460{ 687{
… …
464 { 691 {
465 int fd = fdchanges [i]; 692 int fd = fdchanges [i];
466 ANFD *anfd = anfds + fd; 693 ANFD *anfd = anfds + fd;
467 ev_io *w; 694 ev_io *w;
468 695
469 int events = 0; 696 unsigned char events = 0;
470 697
471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
472 events |= w->events; 699 events |= (unsigned char)w->events;
473 700
474#if EV_SELECT_IS_WINSOCKET 701#if EV_SELECT_IS_WINSOCKET
475 if (events) 702 if (events)
476 { 703 {
477 unsigned long argp; 704 unsigned long argp;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
478 anfd->handle = _get_osfhandle (fd); 708 anfd->handle = _get_osfhandle (fd);
709 #endif
479 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
480 } 711 }
481#endif 712#endif
482 713
714 {
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
483 anfd->reify = 0; 718 anfd->reify = 0;
484
485 backend_modify (EV_A_ fd, anfd->events, events);
486 anfd->events = events; 719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events);
723 }
487 } 724 }
488 725
489 fdchangecnt = 0; 726 fdchangecnt = 0;
490} 727}
491 728
492void inline_size 729void inline_size
493fd_change (EV_P_ int fd) 730fd_change (EV_P_ int fd, int flags)
494{ 731{
495 if (expect_false (anfds [fd].reify)) 732 unsigned char reify = anfds [fd].reify;
496 return;
497
498 anfds [fd].reify = 1; 733 anfds [fd].reify |= flags;
499 734
735 if (expect_true (!reify))
736 {
500 ++fdchangecnt; 737 ++fdchangecnt;
501 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502 fdchanges [fdchangecnt - 1] = fd; 739 fdchanges [fdchangecnt - 1] = fd;
740 }
503} 741}
504 742
505void inline_speed 743void inline_speed
506fd_kill (EV_P_ int fd) 744fd_kill (EV_P_ int fd)
507{ 745{
… …
554static void noinline 792static void noinline
555fd_rearm_all (EV_P) 793fd_rearm_all (EV_P)
556{ 794{
557 int fd; 795 int fd;
558 796
559 /* this should be highly optimised to not do anything but set a flag */
560 for (fd = 0; fd < anfdmax; ++fd) 797 for (fd = 0; fd < anfdmax; ++fd)
561 if (anfds [fd].events) 798 if (anfds [fd].events)
562 { 799 {
563 anfds [fd].events = 0; 800 anfds [fd].events = 0;
564 fd_change (EV_A_ fd); 801 fd_change (EV_A_ fd, EV_IOFDSET | 1);
565 } 802 }
566} 803}
567 804
568/*****************************************************************************/ 805/*****************************************************************************/
569 806
807/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree.
811 */
812
813/*
814 * at the moment we allow libev the luxury of two heaps,
815 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
816 * which is more cache-efficient.
817 * the difference is about 5% with 50000+ watchers.
818 */
819#if EV_USE_4HEAP
820
821#define DHEAP 4
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k))
825
826/* away from the root */
570void inline_speed 827void inline_speed
571upheap (WT *heap, int k) 828downheap (ANHE *heap, int N, int k)
572{ 829{
573 WT w = heap [k]; 830 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0;
574 832
575 while (k && heap [k >> 1]->at > w->at) 833 for (;;)
576 {
577 heap [k] = heap [k >> 1];
578 ((W)heap [k])->active = k + 1;
579 k >>= 1;
580 } 834 {
835 ev_tstamp minat;
836 ANHE *minpos;
837 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
581 838
839 /* find minimum child */
840 if (expect_true (pos + DHEAP - 1 < E))
841 {
842 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
843 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
846 }
847 else if (pos < E)
848 {
849 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
850 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
851 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
852 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
853 }
854 else
855 break;
856
857 if (ANHE_at (he) <= minat)
858 break;
859
860 heap [k] = *minpos;
861 ev_active (ANHE_w (*minpos)) = k;
862
863 k = minpos - heap;
864 }
865
582 heap [k] = w; 866 heap [k] = he;
583 ((W)heap [k])->active = k + 1; 867 ev_active (ANHE_w (he)) = k;
584
585} 868}
586 869
870#else /* 4HEAP */
871
872#define HEAP0 1
873#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p))
875
876/* away from the root */
587void inline_speed 877void inline_speed
588downheap (WT *heap, int N, int k) 878downheap (ANHE *heap, int N, int k)
589{ 879{
590 WT w = heap [k]; 880 ANHE he = heap [k];
591 881
592 while (k < (N >> 1)) 882 for (;;)
593 { 883 {
594 int j = k << 1; 884 int c = k << 1;
595 885
596 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 886 if (c > N + HEAP0 - 1)
597 ++j;
598
599 if (w->at <= heap [j]->at)
600 break; 887 break;
601 888
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0;
891
892 if (ANHE_at (he) <= ANHE_at (heap [c]))
893 break;
894
602 heap [k] = heap [j]; 895 heap [k] = heap [c];
603 ((W)heap [k])->active = k + 1; 896 ev_active (ANHE_w (heap [k])) = k;
897
604 k = j; 898 k = c;
605 } 899 }
606 900
607 heap [k] = w; 901 heap [k] = he;
608 ((W)heap [k])->active = k + 1; 902 ev_active (ANHE_w (he)) = k;
903}
904#endif
905
906/* towards the root */
907void inline_speed
908upheap (ANHE *heap, int k)
909{
910 ANHE he = heap [k];
911
912 for (;;)
913 {
914 int p = HPARENT (k);
915
916 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
917 break;
918
919 heap [k] = heap [p];
920 ev_active (ANHE_w (heap [k])) = k;
921 k = p;
922 }
923
924 heap [k] = he;
925 ev_active (ANHE_w (he)) = k;
609} 926}
610 927
611void inline_size 928void inline_size
612adjustheap (WT *heap, int N, int k) 929adjustheap (ANHE *heap, int N, int k)
613{ 930{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
614 upheap (heap, k); 932 upheap (heap, k);
933 else
615 downheap (heap, N, k); 934 downheap (heap, N, k);
935}
936
937/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size
939reheap (ANHE *heap, int N)
940{
941 int i;
942
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0);
616} 947}
617 948
618/*****************************************************************************/ 949/*****************************************************************************/
619 950
620typedef struct 951typedef struct
621{ 952{
622 WL head; 953 WL head;
623 sig_atomic_t volatile gotsig; 954 EV_ATOMIC_T gotsig;
624} ANSIG; 955} ANSIG;
625 956
626static ANSIG *signals; 957static ANSIG *signals;
627static int signalmax; 958static int signalmax;
628 959
629static int sigpipe [2]; 960static EV_ATOMIC_T gotsig;
630static sig_atomic_t volatile gotsig;
631static ev_io sigev;
632 961
633void inline_size 962void inline_size
634signals_init (ANSIG *base, int count) 963signals_init (ANSIG *base, int count)
635{ 964{
636 while (count--) 965 while (count--)
… …
640 969
641 ++base; 970 ++base;
642 } 971 }
643} 972}
644 973
645static void 974/*****************************************************************************/
646sighandler (int signum)
647{
648#if _WIN32
649 signal (signum, sighandler);
650#endif
651 975
652 signals [signum - 1].gotsig = 1;
653
654 if (!gotsig)
655 {
656 int old_errno = errno;
657 gotsig = 1;
658 write (sigpipe [1], &signum, 1);
659 errno = old_errno;
660 }
661}
662
663void noinline
664ev_feed_signal_event (EV_P_ int signum)
665{
666 WL w;
667
668#if EV_MULTIPLICITY
669 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
670#endif
671
672 --signum;
673
674 if (signum < 0 || signum >= signalmax)
675 return;
676
677 signals [signum].gotsig = 0;
678
679 for (w = signals [signum].head; w; w = w->next)
680 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
681}
682
683static void
684sigcb (EV_P_ ev_io *iow, int revents)
685{
686 int signum;
687
688 read (sigpipe [0], &revents, 1);
689 gotsig = 0;
690
691 for (signum = signalmax; signum--; )
692 if (signals [signum].gotsig)
693 ev_feed_signal_event (EV_A_ signum + 1);
694}
695
696void inline_size 976void inline_speed
697fd_intern (int fd) 977fd_intern (int fd)
698{ 978{
699#ifdef _WIN32 979#ifdef _WIN32
700 int arg = 1; 980 int arg = 1;
701 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
704 fcntl (fd, F_SETFL, O_NONBLOCK); 984 fcntl (fd, F_SETFL, O_NONBLOCK);
705#endif 985#endif
706} 986}
707 987
708static void noinline 988static void noinline
709siginit (EV_P) 989evpipe_init (EV_P)
710{ 990{
991 if (!ev_is_active (&pipeev))
992 {
993#if EV_USE_EVENTFD
994 if ((evfd = eventfd (0, 0)) >= 0)
995 {
996 evpipe [0] = -1;
997 fd_intern (evfd);
998 ev_io_set (&pipeev, evfd, EV_READ);
999 }
1000 else
1001#endif
1002 {
1003 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe");
1005
711 fd_intern (sigpipe [0]); 1006 fd_intern (evpipe [0]);
712 fd_intern (sigpipe [1]); 1007 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ);
1009 }
713 1010
714 ev_io_set (&sigev, sigpipe [0], EV_READ);
715 ev_io_start (EV_A_ &sigev); 1011 ev_io_start (EV_A_ &pipeev);
716 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1012 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 }
1014}
1015
1016void inline_size
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{
1019 if (!*flag)
1020 {
1021 int old_errno = errno; /* save errno because write might clobber it */
1022
1023 *flag = 1;
1024
1025#if EV_USE_EVENTFD
1026 if (evfd >= 0)
1027 {
1028 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t));
1030 }
1031 else
1032#endif
1033 write (evpipe [1], &old_errno, 1);
1034
1035 errno = old_errno;
1036 }
1037}
1038
1039static void
1040pipecb (EV_P_ ev_io *iow, int revents)
1041{
1042#if EV_USE_EVENTFD
1043 if (evfd >= 0)
1044 {
1045 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t));
1047 }
1048 else
1049#endif
1050 {
1051 char dummy;
1052 read (evpipe [0], &dummy, 1);
1053 }
1054
1055 if (gotsig && ev_is_default_loop (EV_A))
1056 {
1057 int signum;
1058 gotsig = 0;
1059
1060 for (signum = signalmax; signum--; )
1061 if (signals [signum].gotsig)
1062 ev_feed_signal_event (EV_A_ signum + 1);
1063 }
1064
1065#if EV_ASYNC_ENABLE
1066 if (gotasync)
1067 {
1068 int i;
1069 gotasync = 0;
1070
1071 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent)
1073 {
1074 asyncs [i]->sent = 0;
1075 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1076 }
1077 }
1078#endif
717} 1079}
718 1080
719/*****************************************************************************/ 1081/*****************************************************************************/
720 1082
1083static void
1084ev_sighandler (int signum)
1085{
1086#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct;
1088#endif
1089
1090#if _WIN32
1091 signal (signum, ev_sighandler);
1092#endif
1093
1094 signals [signum - 1].gotsig = 1;
1095 evpipe_write (EV_A_ &gotsig);
1096}
1097
1098void noinline
1099ev_feed_signal_event (EV_P_ int signum)
1100{
1101 WL w;
1102
1103#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1105#endif
1106
1107 --signum;
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return;
1111
1112 signals [signum].gotsig = 0;
1113
1114 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116}
1117
1118/*****************************************************************************/
1119
721static ev_child *childs [EV_PID_HASHSIZE]; 1120static WL childs [EV_PID_HASHSIZE];
722 1121
723#ifndef _WIN32 1122#ifndef _WIN32
724 1123
725static ev_signal childev; 1124static ev_signal childev;
726 1125
1126#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0
1128#endif
1129
727void inline_speed 1130void inline_speed
728child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1131child_reap (EV_P_ int chain, int pid, int status)
729{ 1132{
730 ev_child *w; 1133 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
731 1135
732 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 {
733 if (w->pid == pid || !w->pid) 1138 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1)))
734 { 1140 {
735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
736 w->rpid = pid; 1142 w->rpid = pid;
737 w->rstatus = status; 1143 w->rstatus = status;
738 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1144 ev_feed_event (EV_A_ (W)w, EV_CHILD);
739 } 1145 }
1146 }
740} 1147}
741 1148
742#ifndef WCONTINUED 1149#ifndef WCONTINUED
743# define WCONTINUED 0 1150# define WCONTINUED 0
744#endif 1151#endif
… …
753 if (!WCONTINUED 1160 if (!WCONTINUED
754 || errno != EINVAL 1161 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1162 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return; 1163 return;
757 1164
758 /* make sure we are called again until all childs have been reaped */ 1165 /* make sure we are called again until all children have been reaped */
759 /* we need to do it this way so that the callback gets called before we continue */ 1166 /* we need to do it this way so that the callback gets called before we continue */
760 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
761 1168
762 child_reap (EV_A_ sw, pid, pid, status); 1169 child_reap (EV_A_ pid, pid, status);
763 if (EV_PID_HASHSIZE > 1) 1170 if (EV_PID_HASHSIZE > 1)
764 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
765} 1172}
766 1173
767#endif 1174#endif
768 1175
769/*****************************************************************************/ 1176/*****************************************************************************/
… …
841} 1248}
842 1249
843unsigned int 1250unsigned int
844ev_embeddable_backends (void) 1251ev_embeddable_backends (void)
845{ 1252{
846 return EVBACKEND_EPOLL 1253 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
847 | EVBACKEND_KQUEUE 1254
848 | EVBACKEND_PORT; 1255 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1256 /* please fix it and tell me how to detect the fix */
1257 flags &= ~EVBACKEND_EPOLL;
1258
1259 return flags;
849} 1260}
850 1261
851unsigned int 1262unsigned int
852ev_backend (EV_P) 1263ev_backend (EV_P)
853{ 1264{
854 return backend; 1265 return backend;
855} 1266}
856 1267
857static void 1268unsigned int
1269ev_loop_count (EV_P)
1270{
1271 return loop_count;
1272}
1273
1274void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{
1277 io_blocktime = interval;
1278}
1279
1280void
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{
1283 timeout_blocktime = interval;
1284}
1285
1286static void noinline
858loop_init (EV_P_ unsigned int flags) 1287loop_init (EV_P_ unsigned int flags)
859{ 1288{
860 if (!backend) 1289 if (!backend)
861 { 1290 {
862#if EV_USE_MONOTONIC 1291#if EV_USE_MONOTONIC
… …
865 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
866 have_monotonic = 1; 1295 have_monotonic = 1;
867 } 1296 }
868#endif 1297#endif
869 1298
870 ev_rt_now = ev_time (); 1299 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1300 mn_now = get_clock ();
872 now_floor = mn_now; 1301 now_floor = mn_now;
873 rtmn_diff = ev_rt_now - mn_now; 1302 rtmn_diff = ev_rt_now - mn_now;
1303
1304 io_blocktime = 0.;
1305 timeout_blocktime = 0.;
1306 backend = 0;
1307 backend_fd = -1;
1308 gotasync = 0;
1309#if EV_USE_INOTIFY
1310 fs_fd = -2;
1311#endif
1312
1313 /* pid check not overridable via env */
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif
874 1318
875 if (!(flags & EVFLAG_NOENV) 1319 if (!(flags & EVFLAG_NOENV)
876 && !enable_secure () 1320 && !enable_secure ()
877 && getenv ("LIBEV_FLAGS")) 1321 && getenv ("LIBEV_FLAGS"))
878 flags = atoi (getenv ("LIBEV_FLAGS")); 1322 flags = atoi (getenv ("LIBEV_FLAGS"));
879 1323
880 if (!(flags & 0x0000ffffUL)) 1324 if (!(flags & 0x0000ffffU))
881 flags |= ev_recommended_backends (); 1325 flags |= ev_recommended_backends ();
882 1326
883 backend = 0;
884#if EV_USE_PORT 1327#if EV_USE_PORT
885 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1328 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886#endif 1329#endif
887#if EV_USE_KQUEUE 1330#if EV_USE_KQUEUE
888 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1331 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
895#endif 1338#endif
896#if EV_USE_SELECT 1339#if EV_USE_SELECT
897 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
898#endif 1341#endif
899 1342
900 ev_init (&sigev, sigcb); 1343 ev_init (&pipeev, pipecb);
901 ev_set_priority (&sigev, EV_MAXPRI); 1344 ev_set_priority (&pipeev, EV_MAXPRI);
902 } 1345 }
903} 1346}
904 1347
905static void 1348static void noinline
906loop_destroy (EV_P) 1349loop_destroy (EV_P)
907{ 1350{
908 int i; 1351 int i;
1352
1353 if (ev_is_active (&pipeev))
1354 {
1355 ev_ref (EV_A); /* signal watcher */
1356 ev_io_stop (EV_A_ &pipeev);
1357
1358#if EV_USE_EVENTFD
1359 if (evfd >= 0)
1360 close (evfd);
1361#endif
1362
1363 if (evpipe [0] >= 0)
1364 {
1365 close (evpipe [0]);
1366 close (evpipe [1]);
1367 }
1368 }
1369
1370#if EV_USE_INOTIFY
1371 if (fs_fd >= 0)
1372 close (fs_fd);
1373#endif
1374
1375 if (backend_fd >= 0)
1376 close (backend_fd);
909 1377
910#if EV_USE_PORT 1378#if EV_USE_PORT
911 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912#endif 1380#endif
913#if EV_USE_KQUEUE 1381#if EV_USE_KQUEUE
… …
922#if EV_USE_SELECT 1390#if EV_USE_SELECT
923 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1391 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924#endif 1392#endif
925 1393
926 for (i = NUMPRI; i--; ) 1394 for (i = NUMPRI; i--; )
1395 {
927 array_free (pending, [i]); 1396 array_free (pending, [i]);
1397#if EV_IDLE_ENABLE
1398 array_free (idle, [i]);
1399#endif
1400 }
1401
1402 ev_free (anfds); anfdmax = 0;
928 1403
929 /* have to use the microsoft-never-gets-it-right macro */ 1404 /* have to use the microsoft-never-gets-it-right macro */
930 array_free (fdchange, EMPTY0); 1405 array_free (fdchange, EMPTY);
931 array_free (timer, EMPTY0); 1406 array_free (timer, EMPTY);
932#if EV_PERIODIC_ENABLE 1407#if EV_PERIODIC_ENABLE
933 array_free (periodic, EMPTY0); 1408 array_free (periodic, EMPTY);
934#endif 1409#endif
1410#if EV_FORK_ENABLE
935 array_free (idle, EMPTY0); 1411 array_free (fork, EMPTY);
1412#endif
936 array_free (prepare, EMPTY0); 1413 array_free (prepare, EMPTY);
937 array_free (check, EMPTY0); 1414 array_free (check, EMPTY);
1415#if EV_ASYNC_ENABLE
1416 array_free (async, EMPTY);
1417#endif
938 1418
939 backend = 0; 1419 backend = 0;
940} 1420}
941 1421
942static void 1422#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P);
1424#endif
1425
1426void inline_size
943loop_fork (EV_P) 1427loop_fork (EV_P)
944{ 1428{
945#if EV_USE_PORT 1429#if EV_USE_PORT
946 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947#endif 1431#endif
… …
949 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1433 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950#endif 1434#endif
951#if EV_USE_EPOLL 1435#if EV_USE_EPOLL
952 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1436 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
953#endif 1437#endif
1438#if EV_USE_INOTIFY
1439 infy_fork (EV_A);
1440#endif
954 1441
955 if (ev_is_active (&sigev)) 1442 if (ev_is_active (&pipeev))
956 { 1443 {
957 /* default loop */ 1444 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */
1446 gotsig = 1;
1447#if EV_ASYNC_ENABLE
1448 gotasync = 1;
1449#endif
958 1450
959 ev_ref (EV_A); 1451 ev_ref (EV_A);
960 ev_io_stop (EV_A_ &sigev); 1452 ev_io_stop (EV_A_ &pipeev);
1453
1454#if EV_USE_EVENTFD
1455 if (evfd >= 0)
1456 close (evfd);
1457#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
961 close (sigpipe [0]); 1461 close (evpipe [0]);
962 close (sigpipe [1]); 1462 close (evpipe [1]);
1463 }
963 1464
964 while (pipe (sigpipe))
965 syserr ("(libev) error creating pipe");
966
967 siginit (EV_A); 1465 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ);
968 } 1468 }
969 1469
970 postfork = 0; 1470 postfork = 0;
971} 1471}
972 1472
973#if EV_MULTIPLICITY 1473#if EV_MULTIPLICITY
1474
974struct ev_loop * 1475struct ev_loop *
975ev_loop_new (unsigned int flags) 1476ev_loop_new (unsigned int flags)
976{ 1477{
977 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
978 1479
… …
994} 1495}
995 1496
996void 1497void
997ev_loop_fork (EV_P) 1498ev_loop_fork (EV_P)
998{ 1499{
999 postfork = 1; 1500 postfork = 1; /* must be in line with ev_default_fork */
1000} 1501}
1001 1502
1503#if EV_VERIFY
1504void noinline
1505verify_watcher (EV_P_ W w)
1506{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508
1509 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511}
1512
1513static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N)
1515{
1516 int i;
1517
1518 for (i = HEAP0; i < N + HEAP0; ++i)
1519 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 }
1526}
1527
1528static void noinline
1529array_verify (EV_P_ W *ws, int cnt)
1530{
1531 while (cnt--)
1532 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]);
1535 }
1536}
1537#endif
1538
1539void
1540ev_loop_verify (EV_P)
1541{
1542#if EV_VERIFY
1543 int i;
1544 WL w;
1545
1546 assert (activecnt >= -1);
1547
1548 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1551
1552 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next)
1555 {
1556 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 }
1560
1561 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt);
1563
1564#if EV_PERIODIC_ENABLE
1565 assert (periodicmax >= periodiccnt);
1566 verify_heap (EV_A_ periodics, periodiccnt);
1567#endif
1568
1569 for (i = NUMPRI; i--; )
1570 {
1571 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE
1573 assert (idleall >= 0);
1574 assert (idlemax [i] >= idlecnt [i]);
1575 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1576#endif
1577 }
1578
1579#if EV_FORK_ENABLE
1580 assert (forkmax >= forkcnt);
1581 array_verify (EV_A_ (W *)forks, forkcnt);
1582#endif
1583
1584#if EV_ASYNC_ENABLE
1585 assert (asyncmax >= asynccnt);
1586 array_verify (EV_A_ (W *)asyncs, asynccnt);
1587#endif
1588
1589 assert (preparemax >= preparecnt);
1590 array_verify (EV_A_ (W *)prepares, preparecnt);
1591
1592 assert (checkmax >= checkcnt);
1593 array_verify (EV_A_ (W *)checks, checkcnt);
1594
1595# if 0
1596 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1597 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1002#endif 1598# endif
1599#endif
1600}
1601
1602#endif /* multiplicity */
1003 1603
1004#if EV_MULTIPLICITY 1604#if EV_MULTIPLICITY
1005struct ev_loop * 1605struct ev_loop *
1006ev_default_loop_init (unsigned int flags) 1606ev_default_loop_init (unsigned int flags)
1007#else 1607#else
1008int 1608int
1009ev_default_loop (unsigned int flags) 1609ev_default_loop (unsigned int flags)
1010#endif 1610#endif
1011{ 1611{
1012 if (sigpipe [0] == sigpipe [1])
1013 if (pipe (sigpipe))
1014 return 0;
1015
1016 if (!ev_default_loop_ptr) 1612 if (!ev_default_loop_ptr)
1017 { 1613 {
1018#if EV_MULTIPLICITY 1614#if EV_MULTIPLICITY
1019 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1615 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1020#else 1616#else
… …
1023 1619
1024 loop_init (EV_A_ flags); 1620 loop_init (EV_A_ flags);
1025 1621
1026 if (ev_backend (EV_A)) 1622 if (ev_backend (EV_A))
1027 { 1623 {
1028 siginit (EV_A);
1029
1030#ifndef _WIN32 1624#ifndef _WIN32
1031 ev_signal_init (&childev, childcb, SIGCHLD); 1625 ev_signal_init (&childev, childcb, SIGCHLD);
1032 ev_set_priority (&childev, EV_MAXPRI); 1626 ev_set_priority (&childev, EV_MAXPRI);
1033 ev_signal_start (EV_A_ &childev); 1627 ev_signal_start (EV_A_ &childev);
1034 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1628 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1051#ifndef _WIN32 1645#ifndef _WIN32
1052 ev_ref (EV_A); /* child watcher */ 1646 ev_ref (EV_A); /* child watcher */
1053 ev_signal_stop (EV_A_ &childev); 1647 ev_signal_stop (EV_A_ &childev);
1054#endif 1648#endif
1055 1649
1056 ev_ref (EV_A); /* signal watcher */
1057 ev_io_stop (EV_A_ &sigev);
1058
1059 close (sigpipe [0]); sigpipe [0] = 0;
1060 close (sigpipe [1]); sigpipe [1] = 0;
1061
1062 loop_destroy (EV_A); 1650 loop_destroy (EV_A);
1063} 1651}
1064 1652
1065void 1653void
1066ev_default_fork (void) 1654ev_default_fork (void)
… …
1068#if EV_MULTIPLICITY 1656#if EV_MULTIPLICITY
1069 struct ev_loop *loop = ev_default_loop_ptr; 1657 struct ev_loop *loop = ev_default_loop_ptr;
1070#endif 1658#endif
1071 1659
1072 if (backend) 1660 if (backend)
1073 postfork = 1; 1661 postfork = 1; /* must be in line with ev_loop_fork */
1074} 1662}
1075 1663
1076/*****************************************************************************/ 1664/*****************************************************************************/
1077 1665
1078int inline_size 1666void
1079any_pending (EV_P) 1667ev_invoke (EV_P_ void *w, int revents)
1080{ 1668{
1081 int pri; 1669 EV_CB_INVOKE ((W)w, revents);
1082
1083 for (pri = NUMPRI; pri--; )
1084 if (pendingcnt [pri])
1085 return 1;
1086
1087 return 0;
1088} 1670}
1089 1671
1090void inline_speed 1672void inline_speed
1091call_pending (EV_P) 1673call_pending (EV_P)
1092{ 1674{
… …
1097 { 1679 {
1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099 1681
1100 if (expect_true (p->w)) 1682 if (expect_true (p->w))
1101 { 1683 {
1102 assert (("non-pending watcher on pending list", p->w->pending)); 1684 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1103 1685
1104 p->w->pending = 0; 1686 p->w->pending = 0;
1105 EV_CB_INVOKE (p->w, p->events); 1687 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK;
1106 } 1689 }
1107 } 1690 }
1108} 1691}
1109 1692
1693#if EV_IDLE_ENABLE
1694void inline_size
1695idle_reify (EV_P)
1696{
1697 if (expect_false (idleall))
1698 {
1699 int pri;
1700
1701 for (pri = NUMPRI; pri--; )
1702 {
1703 if (pendingcnt [pri])
1704 break;
1705
1706 if (idlecnt [pri])
1707 {
1708 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1709 break;
1710 }
1711 }
1712 }
1713}
1714#endif
1715
1110void inline_size 1716void inline_size
1111timers_reify (EV_P) 1717timers_reify (EV_P)
1112{ 1718{
1719 EV_FREQUENT_CHECK;
1720
1113 while (timercnt && ((WT)timers [0])->at <= mn_now) 1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1114 { 1722 {
1115 ev_timer *w = timers [0]; 1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1116 1724
1117 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1118 1726
1119 /* first reschedule or stop timer */ 1727 /* first reschedule or stop timer */
1120 if (w->repeat) 1728 if (w->repeat)
1121 { 1729 {
1730 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now;
1733
1122 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1734 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123 1735
1124 ((WT)w)->at += w->repeat; 1736 ANHE_at_cache (timers [HEAP0]);
1125 if (((WT)w)->at < mn_now)
1126 ((WT)w)->at = mn_now;
1127
1128 downheap ((WT *)timers, timercnt, 0); 1737 downheap (timers, timercnt, HEAP0);
1129 } 1738 }
1130 else 1739 else
1131 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132 1741
1742 EV_FREQUENT_CHECK;
1133 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1134 } 1744 }
1135} 1745}
1136 1746
1137#if EV_PERIODIC_ENABLE 1747#if EV_PERIODIC_ENABLE
1138void inline_size 1748void inline_size
1139periodics_reify (EV_P) 1749periodics_reify (EV_P)
1140{ 1750{
1751 EV_FREQUENT_CHECK;
1752
1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1142 { 1754 {
1143 ev_periodic *w = periodics [0]; 1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1144 1756
1145 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1146 1758
1147 /* first reschedule or stop timer */ 1759 /* first reschedule or stop timer */
1148 if (w->reschedule_cb) 1760 if (w->reschedule_cb)
1149 { 1761 {
1150 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763
1151 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1764 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765
1766 ANHE_at_cache (periodics [HEAP0]);
1152 downheap ((WT *)periodics, periodiccnt, 0); 1767 downheap (periodics, periodiccnt, HEAP0);
1153 } 1768 }
1154 else if (w->interval) 1769 else if (w->interval)
1155 { 1770 {
1156 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1157 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1158 downheap ((WT *)periodics, periodiccnt, 0); 1786 downheap (periodics, periodiccnt, HEAP0);
1159 } 1787 }
1160 else 1788 else
1161 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162 1790
1791 EV_FREQUENT_CHECK;
1163 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1164 } 1793 }
1165} 1794}
1166 1795
1167static void noinline 1796static void noinline
1168periodics_reschedule (EV_P) 1797periodics_reschedule (EV_P)
1169{ 1798{
1170 int i; 1799 int i;
1171 1800
1172 /* adjust periodics after time jump */ 1801 /* adjust periodics after time jump */
1173 for (i = 0; i < periodiccnt; ++i) 1802 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1174 { 1803 {
1175 ev_periodic *w = periodics [i]; 1804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1176 1805
1177 if (w->reschedule_cb) 1806 if (w->reschedule_cb)
1178 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1807 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1179 else if (w->interval) 1808 else if (w->interval)
1180 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1809 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1810
1811 ANHE_at_cache (periodics [i]);
1812 }
1813
1814 reheap (periodics, periodiccnt);
1815}
1816#endif
1817
1818void inline_speed
1819time_update (EV_P_ ev_tstamp max_block)
1820{
1821 int i;
1822
1823#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic))
1181 } 1825 {
1826 ev_tstamp odiff = rtmn_diff;
1182 1827
1183 /* now rebuild the heap */
1184 for (i = periodiccnt >> 1; i--; )
1185 downheap ((WT *)periodics, periodiccnt, i);
1186}
1187#endif
1188
1189int inline_size
1190time_update_monotonic (EV_P)
1191{
1192 mn_now = get_clock (); 1828 mn_now = get_clock ();
1193 1829
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1831 /* interpolate in the meantime */
1194 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1832 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195 { 1833 {
1196 ev_rt_now = rtmn_diff + mn_now; 1834 ev_rt_now = rtmn_diff + mn_now;
1197 return 0; 1835 return;
1198 } 1836 }
1199 else 1837
1200 {
1201 now_floor = mn_now; 1838 now_floor = mn_now;
1202 ev_rt_now = ev_time (); 1839 ev_rt_now = ev_time ();
1203 return 1;
1204 }
1205}
1206 1840
1207void inline_size 1841 /* loop a few times, before making important decisions.
1208time_update (EV_P) 1842 * on the choice of "4": one iteration isn't enough,
1209{ 1843 * in case we get preempted during the calls to
1210 int i; 1844 * ev_time and get_clock. a second call is almost guaranteed
1211 1845 * to succeed in that case, though. and looping a few more times
1212#if EV_USE_MONOTONIC 1846 * doesn't hurt either as we only do this on time-jumps or
1213 if (expect_true (have_monotonic)) 1847 * in the unlikely event of having been preempted here.
1214 { 1848 */
1215 if (time_update_monotonic (EV_A)) 1849 for (i = 4; --i; )
1216 { 1850 {
1217 ev_tstamp odiff = rtmn_diff;
1218
1219 /* loop a few times, before making important decisions.
1220 * on the choice of "4": one iteration isn't enough,
1221 * in case we get preempted during the calls to
1222 * ev_time and get_clock. a second call is almost guarenteed
1223 * to succeed in that case, though. and looping a few more times
1224 * doesn't hurt either as we only do this on time-jumps or
1225 * in the unlikely event of getting preempted here.
1226 */
1227 for (i = 4; --i; )
1228 {
1229 rtmn_diff = ev_rt_now - mn_now; 1851 rtmn_diff = ev_rt_now - mn_now;
1230 1852
1231 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1853 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1232 return; /* all is well */ 1854 return; /* all is well */
1233 1855
1234 ev_rt_now = ev_time (); 1856 ev_rt_now = ev_time ();
1235 mn_now = get_clock (); 1857 mn_now = get_clock ();
1236 now_floor = mn_now; 1858 now_floor = mn_now;
1237 } 1859 }
1238 1860
1239# if EV_PERIODIC_ENABLE 1861# if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1862 periodics_reschedule (EV_A);
1241# endif 1863# endif
1242 /* no timer adjustment, as the monotonic clock doesn't jump */ 1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1243 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244 }
1245 } 1866 }
1246 else 1867 else
1247#endif 1868#endif
1248 { 1869 {
1249 ev_rt_now = ev_time (); 1870 ev_rt_now = ev_time ();
1250 1871
1251 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1872 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252 { 1873 {
1253#if EV_PERIODIC_ENABLE 1874#if EV_PERIODIC_ENABLE
1254 periodics_reschedule (EV_A); 1875 periodics_reschedule (EV_A);
1255#endif 1876#endif
1256
1257 /* adjust timers. this is easy, as the offset is the same for all */ 1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1258 for (i = 0; i < timercnt; ++i) 1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1259 ((WT)timers [i])->at += ev_rt_now - mn_now; 1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1260 } 1884 }
1261 1885
1262 mn_now = ev_rt_now; 1886 mn_now = ev_rt_now;
1263 } 1887 }
1264} 1888}
… …
1278static int loop_done; 1902static int loop_done;
1279 1903
1280void 1904void
1281ev_loop (EV_P_ int flags) 1905ev_loop (EV_P_ int flags)
1282{ 1906{
1283 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1907 loop_done = EVUNLOOP_CANCEL;
1284 ? EVUNLOOP_ONE
1285 : EVUNLOOP_CANCEL;
1286 1908
1287 while (activecnt) 1909 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1910
1911 do
1288 { 1912 {
1289 /* we might have forked, so reify kernel state if necessary */ 1913#if EV_VERIFY >= 2
1914 ev_loop_verify (EV_A);
1915#endif
1916
1917#ifndef _WIN32
1918 if (expect_false (curpid)) /* penalise the forking check even more */
1919 if (expect_false (getpid () != curpid))
1920 {
1921 curpid = getpid ();
1922 postfork = 1;
1923 }
1924#endif
1925
1290 #if EV_FORK_ENABLE 1926#if EV_FORK_ENABLE
1927 /* we might have forked, so queue fork handlers */
1291 if (expect_false (postfork)) 1928 if (expect_false (postfork))
1292 if (forkcnt) 1929 if (forkcnt)
1293 { 1930 {
1294 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1931 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295 call_pending (EV_A); 1932 call_pending (EV_A);
1296 } 1933 }
1297 #endif 1934#endif
1298 1935
1299 /* queue check watchers (and execute them) */ 1936 /* queue prepare watchers (and execute them) */
1300 if (expect_false (preparecnt)) 1937 if (expect_false (preparecnt))
1301 { 1938 {
1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1939 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303 call_pending (EV_A); 1940 call_pending (EV_A);
1304 } 1941 }
1305 1942
1943 if (expect_false (!activecnt))
1944 break;
1945
1306 /* we might have forked, so reify kernel state if necessary */ 1946 /* we might have forked, so reify kernel state if necessary */
1307 if (expect_false (postfork)) 1947 if (expect_false (postfork))
1308 loop_fork (EV_A); 1948 loop_fork (EV_A);
1309 1949
1310 /* update fd-related kernel structures */ 1950 /* update fd-related kernel structures */
1311 fd_reify (EV_A); 1951 fd_reify (EV_A);
1312 1952
1313 /* calculate blocking time */ 1953 /* calculate blocking time */
1314 { 1954 {
1315 double block; 1955 ev_tstamp waittime = 0.;
1956 ev_tstamp sleeptime = 0.;
1316 1957
1317 if (flags & EVLOOP_NONBLOCK || idlecnt) 1958 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1318 block = 0.; /* do not block at all */
1319 else
1320 { 1959 {
1321 /* update time to cancel out callback processing overhead */ 1960 /* update time to cancel out callback processing overhead */
1322#if EV_USE_MONOTONIC
1323 if (expect_true (have_monotonic))
1324 time_update_monotonic (EV_A); 1961 time_update (EV_A_ 1e100);
1325 else
1326#endif
1327 {
1328 ev_rt_now = ev_time ();
1329 mn_now = ev_rt_now;
1330 }
1331 1962
1332 block = MAX_BLOCKTIME; 1963 waittime = MAX_BLOCKTIME;
1333 1964
1334 if (timercnt) 1965 if (timercnt)
1335 { 1966 {
1336 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1967 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1337 if (block > to) block = to; 1968 if (waittime > to) waittime = to;
1338 } 1969 }
1339 1970
1340#if EV_PERIODIC_ENABLE 1971#if EV_PERIODIC_ENABLE
1341 if (periodiccnt) 1972 if (periodiccnt)
1342 { 1973 {
1343 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1974 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1344 if (block > to) block = to; 1975 if (waittime > to) waittime = to;
1345 } 1976 }
1346#endif 1977#endif
1347 1978
1348 if (expect_false (block < 0.)) block = 0.; 1979 if (expect_false (waittime < timeout_blocktime))
1980 waittime = timeout_blocktime;
1981
1982 sleeptime = waittime - backend_fudge;
1983
1984 if (expect_true (sleeptime > io_blocktime))
1985 sleeptime = io_blocktime;
1986
1987 if (sleeptime)
1988 {
1989 ev_sleep (sleeptime);
1990 waittime -= sleeptime;
1991 }
1349 } 1992 }
1350 1993
1994 ++loop_count;
1351 backend_poll (EV_A_ block); 1995 backend_poll (EV_A_ waittime);
1996
1997 /* update ev_rt_now, do magic */
1998 time_update (EV_A_ waittime + sleeptime);
1352 } 1999 }
1353
1354 /* update ev_rt_now, do magic */
1355 time_update (EV_A);
1356 2000
1357 /* queue pending timers and reschedule them */ 2001 /* queue pending timers and reschedule them */
1358 timers_reify (EV_A); /* relative timers called last */ 2002 timers_reify (EV_A); /* relative timers called last */
1359#if EV_PERIODIC_ENABLE 2003#if EV_PERIODIC_ENABLE
1360 periodics_reify (EV_A); /* absolute timers called first */ 2004 periodics_reify (EV_A); /* absolute timers called first */
1361#endif 2005#endif
1362 2006
2007#if EV_IDLE_ENABLE
1363 /* queue idle watchers unless other events are pending */ 2008 /* queue idle watchers unless other events are pending */
1364 if (idlecnt && !any_pending (EV_A)) 2009 idle_reify (EV_A);
1365 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2010#endif
1366 2011
1367 /* queue check watchers, to be executed first */ 2012 /* queue check watchers, to be executed first */
1368 if (expect_false (checkcnt)) 2013 if (expect_false (checkcnt))
1369 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2014 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370 2015
1371 call_pending (EV_A); 2016 call_pending (EV_A);
1372
1373 if (expect_false (loop_done))
1374 break;
1375 } 2017 }
2018 while (expect_true (
2019 activecnt
2020 && !loop_done
2021 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2022 ));
1376 2023
1377 if (loop_done == EVUNLOOP_ONE) 2024 if (loop_done == EVUNLOOP_ONE)
1378 loop_done = EVUNLOOP_CANCEL; 2025 loop_done = EVUNLOOP_CANCEL;
1379} 2026}
1380 2027
… …
1407 head = &(*head)->next; 2054 head = &(*head)->next;
1408 } 2055 }
1409} 2056}
1410 2057
1411void inline_speed 2058void inline_speed
1412ev_clear_pending (EV_P_ W w) 2059clear_pending (EV_P_ W w)
1413{ 2060{
1414 if (w->pending) 2061 if (w->pending)
1415 { 2062 {
1416 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2063 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417 w->pending = 0; 2064 w->pending = 0;
1418 } 2065 }
1419} 2066}
1420 2067
2068int
2069ev_clear_pending (EV_P_ void *w)
2070{
2071 W w_ = (W)w;
2072 int pending = w_->pending;
2073
2074 if (expect_true (pending))
2075 {
2076 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2077 w_->pending = 0;
2078 p->w = 0;
2079 return p->events;
2080 }
2081 else
2082 return 0;
2083}
2084
2085void inline_size
2086pri_adjust (EV_P_ W w)
2087{
2088 int pri = w->priority;
2089 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2090 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2091 w->priority = pri;
2092}
2093
1421void inline_speed 2094void inline_speed
1422ev_start (EV_P_ W w, int active) 2095ev_start (EV_P_ W w, int active)
1423{ 2096{
1424 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2097 pri_adjust (EV_A_ w);
1425 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427 w->active = active; 2098 w->active = active;
1428 ev_ref (EV_A); 2099 ev_ref (EV_A);
1429} 2100}
1430 2101
1431void inline_size 2102void inline_size
… …
1435 w->active = 0; 2106 w->active = 0;
1436} 2107}
1437 2108
1438/*****************************************************************************/ 2109/*****************************************************************************/
1439 2110
1440void 2111void noinline
1441ev_io_start (EV_P_ ev_io *w) 2112ev_io_start (EV_P_ ev_io *w)
1442{ 2113{
1443 int fd = w->fd; 2114 int fd = w->fd;
1444 2115
1445 if (expect_false (ev_is_active (w))) 2116 if (expect_false (ev_is_active (w)))
1446 return; 2117 return;
1447 2118
1448 assert (("ev_io_start called with negative fd", fd >= 0)); 2119 assert (("ev_io_start called with negative fd", fd >= 0));
1449 2120
2121 EV_FREQUENT_CHECK;
2122
1450 ev_start (EV_A_ (W)w, 1); 2123 ev_start (EV_A_ (W)w, 1);
1451 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2124 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2125 wlist_add (&anfds[fd].head, (WL)w);
1453 2126
1454 fd_change (EV_A_ fd); 2127 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1455} 2128 w->events &= ~EV_IOFDSET;
1456 2129
1457void 2130 EV_FREQUENT_CHECK;
2131}
2132
2133void noinline
1458ev_io_stop (EV_P_ ev_io *w) 2134ev_io_stop (EV_P_ ev_io *w)
1459{ 2135{
1460 ev_clear_pending (EV_A_ (W)w); 2136 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 2137 if (expect_false (!ev_is_active (w)))
1462 return; 2138 return;
1463 2139
1464 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2140 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465 2141
2142 EV_FREQUENT_CHECK;
2143
1466 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2144 wlist_del (&anfds[w->fd].head, (WL)w);
1467 ev_stop (EV_A_ (W)w); 2145 ev_stop (EV_A_ (W)w);
1468 2146
1469 fd_change (EV_A_ w->fd); 2147 fd_change (EV_A_ w->fd, 1);
1470}
1471 2148
1472void 2149 EV_FREQUENT_CHECK;
2150}
2151
2152void noinline
1473ev_timer_start (EV_P_ ev_timer *w) 2153ev_timer_start (EV_P_ ev_timer *w)
1474{ 2154{
1475 if (expect_false (ev_is_active (w))) 2155 if (expect_false (ev_is_active (w)))
1476 return; 2156 return;
1477 2157
1478 ((WT)w)->at += mn_now; 2158 ev_at (w) += mn_now;
1479 2159
1480 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2160 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481 2161
2162 EV_FREQUENT_CHECK;
2163
2164 ++timercnt;
1482 ev_start (EV_A_ (W)w, ++timercnt); 2165 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1483 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2166 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1484 timers [timercnt - 1] = w; 2167 ANHE_w (timers [ev_active (w)]) = (WT)w;
1485 upheap ((WT *)timers, timercnt - 1); 2168 ANHE_at_cache (timers [ev_active (w)]);
2169 upheap (timers, ev_active (w));
1486 2170
2171 EV_FREQUENT_CHECK;
2172
1487 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2173 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1488} 2174}
1489 2175
1490void 2176void noinline
1491ev_timer_stop (EV_P_ ev_timer *w) 2177ev_timer_stop (EV_P_ ev_timer *w)
1492{ 2178{
1493 ev_clear_pending (EV_A_ (W)w); 2179 clear_pending (EV_A_ (W)w);
1494 if (expect_false (!ev_is_active (w))) 2180 if (expect_false (!ev_is_active (w)))
1495 return; 2181 return;
1496 2182
2183 EV_FREQUENT_CHECK;
2184
2185 {
2186 int active = ev_active (w);
2187
1497 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2188 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1498 2189
2190 --timercnt;
2191
1499 if (expect_true (((W)w)->active < timercnt--)) 2192 if (expect_true (active < timercnt + HEAP0))
1500 { 2193 {
1501 timers [((W)w)->active - 1] = timers [timercnt]; 2194 timers [active] = timers [timercnt + HEAP0];
1502 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2195 adjustheap (timers, timercnt, active);
1503 } 2196 }
2197 }
1504 2198
1505 ((WT)w)->at -= mn_now; 2199 EV_FREQUENT_CHECK;
2200
2201 ev_at (w) -= mn_now;
1506 2202
1507 ev_stop (EV_A_ (W)w); 2203 ev_stop (EV_A_ (W)w);
1508} 2204}
1509 2205
1510void 2206void noinline
1511ev_timer_again (EV_P_ ev_timer *w) 2207ev_timer_again (EV_P_ ev_timer *w)
1512{ 2208{
2209 EV_FREQUENT_CHECK;
2210
1513 if (ev_is_active (w)) 2211 if (ev_is_active (w))
1514 { 2212 {
1515 if (w->repeat) 2213 if (w->repeat)
1516 { 2214 {
1517 ((WT)w)->at = mn_now + w->repeat; 2215 ev_at (w) = mn_now + w->repeat;
2216 ANHE_at_cache (timers [ev_active (w)]);
1518 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2217 adjustheap (timers, timercnt, ev_active (w));
1519 } 2218 }
1520 else 2219 else
1521 ev_timer_stop (EV_A_ w); 2220 ev_timer_stop (EV_A_ w);
1522 } 2221 }
1523 else if (w->repeat) 2222 else if (w->repeat)
1524 { 2223 {
1525 w->at = w->repeat; 2224 ev_at (w) = w->repeat;
1526 ev_timer_start (EV_A_ w); 2225 ev_timer_start (EV_A_ w);
1527 } 2226 }
2227
2228 EV_FREQUENT_CHECK;
1528} 2229}
1529 2230
1530#if EV_PERIODIC_ENABLE 2231#if EV_PERIODIC_ENABLE
1531void 2232void noinline
1532ev_periodic_start (EV_P_ ev_periodic *w) 2233ev_periodic_start (EV_P_ ev_periodic *w)
1533{ 2234{
1534 if (expect_false (ev_is_active (w))) 2235 if (expect_false (ev_is_active (w)))
1535 return; 2236 return;
1536 2237
1537 if (w->reschedule_cb) 2238 if (w->reschedule_cb)
1538 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2239 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1539 else if (w->interval) 2240 else if (w->interval)
1540 { 2241 {
1541 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2242 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1542 /* this formula differs from the one in periodic_reify because we do not always round up */ 2243 /* this formula differs from the one in periodic_reify because we do not always round up */
1543 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2244 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544 } 2245 }
2246 else
2247 ev_at (w) = w->offset;
1545 2248
2249 EV_FREQUENT_CHECK;
2250
2251 ++periodiccnt;
1546 ev_start (EV_A_ (W)w, ++periodiccnt); 2252 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1547 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2253 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1548 periodics [periodiccnt - 1] = w; 2254 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1549 upheap ((WT *)periodics, periodiccnt - 1); 2255 ANHE_at_cache (periodics [ev_active (w)]);
2256 upheap (periodics, ev_active (w));
1550 2257
2258 EV_FREQUENT_CHECK;
2259
1551 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2260 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1552} 2261}
1553 2262
1554void 2263void noinline
1555ev_periodic_stop (EV_P_ ev_periodic *w) 2264ev_periodic_stop (EV_P_ ev_periodic *w)
1556{ 2265{
1557 ev_clear_pending (EV_A_ (W)w); 2266 clear_pending (EV_A_ (W)w);
1558 if (expect_false (!ev_is_active (w))) 2267 if (expect_false (!ev_is_active (w)))
1559 return; 2268 return;
1560 2269
2270 EV_FREQUENT_CHECK;
2271
2272 {
2273 int active = ev_active (w);
2274
1561 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2275 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1562 2276
2277 --periodiccnt;
2278
1563 if (expect_true (((W)w)->active < periodiccnt--)) 2279 if (expect_true (active < periodiccnt + HEAP0))
1564 { 2280 {
1565 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2281 periodics [active] = periodics [periodiccnt + HEAP0];
1566 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2282 adjustheap (periodics, periodiccnt, active);
1567 } 2283 }
2284 }
2285
2286 EV_FREQUENT_CHECK;
1568 2287
1569 ev_stop (EV_A_ (W)w); 2288 ev_stop (EV_A_ (W)w);
1570} 2289}
1571 2290
1572void 2291void noinline
1573ev_periodic_again (EV_P_ ev_periodic *w) 2292ev_periodic_again (EV_P_ ev_periodic *w)
1574{ 2293{
1575 /* TODO: use adjustheap and recalculation */ 2294 /* TODO: use adjustheap and recalculation */
1576 ev_periodic_stop (EV_A_ w); 2295 ev_periodic_stop (EV_A_ w);
1577 ev_periodic_start (EV_A_ w); 2296 ev_periodic_start (EV_A_ w);
… …
1580 2299
1581#ifndef SA_RESTART 2300#ifndef SA_RESTART
1582# define SA_RESTART 0 2301# define SA_RESTART 0
1583#endif 2302#endif
1584 2303
1585void 2304void noinline
1586ev_signal_start (EV_P_ ev_signal *w) 2305ev_signal_start (EV_P_ ev_signal *w)
1587{ 2306{
1588#if EV_MULTIPLICITY 2307#if EV_MULTIPLICITY
1589 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2308 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590#endif 2309#endif
1591 if (expect_false (ev_is_active (w))) 2310 if (expect_false (ev_is_active (w)))
1592 return; 2311 return;
1593 2312
1594 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2313 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1595 2314
2315 evpipe_init (EV_A);
2316
2317 EV_FREQUENT_CHECK;
2318
2319 {
2320#ifndef _WIN32
2321 sigset_t full, prev;
2322 sigfillset (&full);
2323 sigprocmask (SIG_SETMASK, &full, &prev);
2324#endif
2325
2326 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2327
2328#ifndef _WIN32
2329 sigprocmask (SIG_SETMASK, &prev, 0);
2330#endif
2331 }
2332
1596 ev_start (EV_A_ (W)w, 1); 2333 ev_start (EV_A_ (W)w, 1);
1597 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2334 wlist_add (&signals [w->signum - 1].head, (WL)w);
1599 2335
1600 if (!((WL)w)->next) 2336 if (!((WL)w)->next)
1601 { 2337 {
1602#if _WIN32 2338#if _WIN32
1603 signal (w->signum, sighandler); 2339 signal (w->signum, ev_sighandler);
1604#else 2340#else
1605 struct sigaction sa; 2341 struct sigaction sa;
1606 sa.sa_handler = sighandler; 2342 sa.sa_handler = ev_sighandler;
1607 sigfillset (&sa.sa_mask); 2343 sigfillset (&sa.sa_mask);
1608 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2344 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1609 sigaction (w->signum, &sa, 0); 2345 sigaction (w->signum, &sa, 0);
1610#endif 2346#endif
1611 } 2347 }
1612}
1613 2348
1614void 2349 EV_FREQUENT_CHECK;
2350}
2351
2352void noinline
1615ev_signal_stop (EV_P_ ev_signal *w) 2353ev_signal_stop (EV_P_ ev_signal *w)
1616{ 2354{
1617 ev_clear_pending (EV_A_ (W)w); 2355 clear_pending (EV_A_ (W)w);
1618 if (expect_false (!ev_is_active (w))) 2356 if (expect_false (!ev_is_active (w)))
1619 return; 2357 return;
1620 2358
2359 EV_FREQUENT_CHECK;
2360
1621 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2361 wlist_del (&signals [w->signum - 1].head, (WL)w);
1622 ev_stop (EV_A_ (W)w); 2362 ev_stop (EV_A_ (W)w);
1623 2363
1624 if (!signals [w->signum - 1].head) 2364 if (!signals [w->signum - 1].head)
1625 signal (w->signum, SIG_DFL); 2365 signal (w->signum, SIG_DFL);
2366
2367 EV_FREQUENT_CHECK;
1626} 2368}
1627 2369
1628void 2370void
1629ev_child_start (EV_P_ ev_child *w) 2371ev_child_start (EV_P_ ev_child *w)
1630{ 2372{
… …
1632 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2374 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1633#endif 2375#endif
1634 if (expect_false (ev_is_active (w))) 2376 if (expect_false (ev_is_active (w)))
1635 return; 2377 return;
1636 2378
2379 EV_FREQUENT_CHECK;
2380
1637 ev_start (EV_A_ (W)w, 1); 2381 ev_start (EV_A_ (W)w, 1);
1638 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2382 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2383
2384 EV_FREQUENT_CHECK;
1639} 2385}
1640 2386
1641void 2387void
1642ev_child_stop (EV_P_ ev_child *w) 2388ev_child_stop (EV_P_ ev_child *w)
1643{ 2389{
1644 ev_clear_pending (EV_A_ (W)w); 2390 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w))) 2391 if (expect_false (!ev_is_active (w)))
1646 return; 2392 return;
1647 2393
2394 EV_FREQUENT_CHECK;
2395
1648 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2396 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649 ev_stop (EV_A_ (W)w); 2397 ev_stop (EV_A_ (W)w);
2398
2399 EV_FREQUENT_CHECK;
1650} 2400}
1651 2401
1652#if EV_STAT_ENABLE 2402#if EV_STAT_ENABLE
1653 2403
1654# ifdef _WIN32 2404# ifdef _WIN32
… …
1657# endif 2407# endif
1658 2408
1659#define DEF_STAT_INTERVAL 5.0074891 2409#define DEF_STAT_INTERVAL 5.0074891
1660#define MIN_STAT_INTERVAL 0.1074891 2410#define MIN_STAT_INTERVAL 0.1074891
1661 2411
2412static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2413
2414#if EV_USE_INOTIFY
2415# define EV_INOTIFY_BUFSIZE 8192
2416
2417static void noinline
2418infy_add (EV_P_ ev_stat *w)
2419{
2420 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);
2421
2422 if (w->wd < 0)
2423 {
2424 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2425
2426 /* monitor some parent directory for speedup hints */
2427 /* note that exceeding the hardcoded limit is not a correctness issue, */
2428 /* but an efficiency issue only */
2429 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2430 {
2431 char path [4096];
2432 strcpy (path, w->path);
2433
2434 do
2435 {
2436 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2437 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2438
2439 char *pend = strrchr (path, '/');
2440
2441 if (!pend)
2442 break; /* whoops, no '/', complain to your admin */
2443
2444 *pend = 0;
2445 w->wd = inotify_add_watch (fs_fd, path, mask);
2446 }
2447 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2448 }
2449 }
2450 else
2451 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2452
2453 if (w->wd >= 0)
2454 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2455}
2456
2457static void noinline
2458infy_del (EV_P_ ev_stat *w)
2459{
2460 int slot;
2461 int wd = w->wd;
2462
2463 if (wd < 0)
2464 return;
2465
2466 w->wd = -2;
2467 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2468 wlist_del (&fs_hash [slot].head, (WL)w);
2469
2470 /* remove this watcher, if others are watching it, they will rearm */
2471 inotify_rm_watch (fs_fd, wd);
2472}
2473
2474static void noinline
2475infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2476{
2477 if (slot < 0)
2478 /* overflow, need to check for all hahs slots */
2479 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2480 infy_wd (EV_A_ slot, wd, ev);
2481 else
2482 {
2483 WL w_;
2484
2485 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2486 {
2487 ev_stat *w = (ev_stat *)w_;
2488 w_ = w_->next; /* lets us remove this watcher and all before it */
2489
2490 if (w->wd == wd || wd == -1)
2491 {
2492 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2493 {
2494 w->wd = -1;
2495 infy_add (EV_A_ w); /* re-add, no matter what */
2496 }
2497
2498 stat_timer_cb (EV_A_ &w->timer, 0);
2499 }
2500 }
2501 }
2502}
2503
2504static void
2505infy_cb (EV_P_ ev_io *w, int revents)
2506{
2507 char buf [EV_INOTIFY_BUFSIZE];
2508 struct inotify_event *ev = (struct inotify_event *)buf;
2509 int ofs;
2510 int len = read (fs_fd, buf, sizeof (buf));
2511
2512 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2513 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2514}
2515
2516void inline_size
2517infy_init (EV_P)
2518{
2519 if (fs_fd != -2)
2520 return;
2521
2522 fs_fd = inotify_init ();
2523
2524 if (fs_fd >= 0)
2525 {
2526 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2527 ev_set_priority (&fs_w, EV_MAXPRI);
2528 ev_io_start (EV_A_ &fs_w);
2529 }
2530}
2531
2532void inline_size
2533infy_fork (EV_P)
2534{
2535 int slot;
2536
2537 if (fs_fd < 0)
2538 return;
2539
2540 close (fs_fd);
2541 fs_fd = inotify_init ();
2542
2543 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2544 {
2545 WL w_ = fs_hash [slot].head;
2546 fs_hash [slot].head = 0;
2547
2548 while (w_)
2549 {
2550 ev_stat *w = (ev_stat *)w_;
2551 w_ = w_->next; /* lets us add this watcher */
2552
2553 w->wd = -1;
2554
2555 if (fs_fd >= 0)
2556 infy_add (EV_A_ w); /* re-add, no matter what */
2557 else
2558 ev_timer_start (EV_A_ &w->timer);
2559 }
2560
2561 }
2562}
2563
2564#endif
2565
1662void 2566void
1663ev_stat_stat (EV_P_ ev_stat *w) 2567ev_stat_stat (EV_P_ ev_stat *w)
1664{ 2568{
1665 if (lstat (w->path, &w->attr) < 0) 2569 if (lstat (w->path, &w->attr) < 0)
1666 w->attr.st_nlink = 0; 2570 w->attr.st_nlink = 0;
1667 else if (!w->attr.st_nlink) 2571 else if (!w->attr.st_nlink)
1668 w->attr.st_nlink = 1; 2572 w->attr.st_nlink = 1;
1669} 2573}
1670 2574
1671static void 2575static void noinline
1672stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2576stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673{ 2577{
1674 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2578 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675 2579
1676 /* we copy this here each the time so that */ 2580 /* we copy this here each the time so that */
1677 /* prev has the old value when the callback gets invoked */ 2581 /* prev has the old value when the callback gets invoked */
1678 w->prev = w->attr; 2582 w->prev = w->attr;
1679 ev_stat_stat (EV_A_ w); 2583 ev_stat_stat (EV_A_ w);
1680 2584
1681 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2585 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2586 if (
2587 w->prev.st_dev != w->attr.st_dev
2588 || w->prev.st_ino != w->attr.st_ino
2589 || w->prev.st_mode != w->attr.st_mode
2590 || w->prev.st_nlink != w->attr.st_nlink
2591 || w->prev.st_uid != w->attr.st_uid
2592 || w->prev.st_gid != w->attr.st_gid
2593 || w->prev.st_rdev != w->attr.st_rdev
2594 || w->prev.st_size != w->attr.st_size
2595 || w->prev.st_atime != w->attr.st_atime
2596 || w->prev.st_mtime != w->attr.st_mtime
2597 || w->prev.st_ctime != w->attr.st_ctime
2598 ) {
2599 #if EV_USE_INOTIFY
2600 infy_del (EV_A_ w);
2601 infy_add (EV_A_ w);
2602 ev_stat_stat (EV_A_ w); /* avoid race... */
2603 #endif
2604
1682 ev_feed_event (EV_A_ w, EV_STAT); 2605 ev_feed_event (EV_A_ w, EV_STAT);
2606 }
1683} 2607}
1684 2608
1685void 2609void
1686ev_stat_start (EV_P_ ev_stat *w) 2610ev_stat_start (EV_P_ ev_stat *w)
1687{ 2611{
… …
1697 if (w->interval < MIN_STAT_INTERVAL) 2621 if (w->interval < MIN_STAT_INTERVAL)
1698 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; 2622 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699 2623
1700 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2624 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701 ev_set_priority (&w->timer, ev_priority (w)); 2625 ev_set_priority (&w->timer, ev_priority (w));
2626
2627#if EV_USE_INOTIFY
2628 infy_init (EV_A);
2629
2630 if (fs_fd >= 0)
2631 infy_add (EV_A_ w);
2632 else
2633#endif
1702 ev_timer_start (EV_A_ &w->timer); 2634 ev_timer_start (EV_A_ &w->timer);
1703 2635
1704 ev_start (EV_A_ (W)w, 1); 2636 ev_start (EV_A_ (W)w, 1);
2637
2638 EV_FREQUENT_CHECK;
1705} 2639}
1706 2640
1707void 2641void
1708ev_stat_stop (EV_P_ ev_stat *w) 2642ev_stat_stop (EV_P_ ev_stat *w)
1709{ 2643{
1710 ev_clear_pending (EV_A_ (W)w); 2644 clear_pending (EV_A_ (W)w);
1711 if (expect_false (!ev_is_active (w))) 2645 if (expect_false (!ev_is_active (w)))
1712 return; 2646 return;
1713 2647
2648 EV_FREQUENT_CHECK;
2649
2650#if EV_USE_INOTIFY
2651 infy_del (EV_A_ w);
2652#endif
1714 ev_timer_stop (EV_A_ &w->timer); 2653 ev_timer_stop (EV_A_ &w->timer);
1715 2654
1716 ev_stop (EV_A_ (W)w); 2655 ev_stop (EV_A_ (W)w);
1717}
1718#endif
1719 2656
2657 EV_FREQUENT_CHECK;
2658}
2659#endif
2660
2661#if EV_IDLE_ENABLE
1720void 2662void
1721ev_idle_start (EV_P_ ev_idle *w) 2663ev_idle_start (EV_P_ ev_idle *w)
1722{ 2664{
1723 if (expect_false (ev_is_active (w))) 2665 if (expect_false (ev_is_active (w)))
1724 return; 2666 return;
1725 2667
2668 pri_adjust (EV_A_ (W)w);
2669
2670 EV_FREQUENT_CHECK;
2671
2672 {
2673 int active = ++idlecnt [ABSPRI (w)];
2674
2675 ++idleall;
1726 ev_start (EV_A_ (W)w, ++idlecnt); 2676 ev_start (EV_A_ (W)w, active);
2677
1727 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2678 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728 idles [idlecnt - 1] = w; 2679 idles [ABSPRI (w)][active - 1] = w;
2680 }
2681
2682 EV_FREQUENT_CHECK;
1729} 2683}
1730 2684
1731void 2685void
1732ev_idle_stop (EV_P_ ev_idle *w) 2686ev_idle_stop (EV_P_ ev_idle *w)
1733{ 2687{
1734 ev_clear_pending (EV_A_ (W)w); 2688 clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w))) 2689 if (expect_false (!ev_is_active (w)))
1736 return; 2690 return;
1737 2691
2692 EV_FREQUENT_CHECK;
2693
1738 { 2694 {
1739 int active = ((W)w)->active; 2695 int active = ev_active (w);
1740 idles [active - 1] = idles [--idlecnt]; 2696
1741 ((W)idles [active - 1])->active = active; 2697 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2698 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2699
2700 ev_stop (EV_A_ (W)w);
2701 --idleall;
1742 } 2702 }
1743 2703
1744 ev_stop (EV_A_ (W)w); 2704 EV_FREQUENT_CHECK;
1745} 2705}
2706#endif
1746 2707
1747void 2708void
1748ev_prepare_start (EV_P_ ev_prepare *w) 2709ev_prepare_start (EV_P_ ev_prepare *w)
1749{ 2710{
1750 if (expect_false (ev_is_active (w))) 2711 if (expect_false (ev_is_active (w)))
1751 return; 2712 return;
2713
2714 EV_FREQUENT_CHECK;
1752 2715
1753 ev_start (EV_A_ (W)w, ++preparecnt); 2716 ev_start (EV_A_ (W)w, ++preparecnt);
1754 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2717 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1755 prepares [preparecnt - 1] = w; 2718 prepares [preparecnt - 1] = w;
2719
2720 EV_FREQUENT_CHECK;
1756} 2721}
1757 2722
1758void 2723void
1759ev_prepare_stop (EV_P_ ev_prepare *w) 2724ev_prepare_stop (EV_P_ ev_prepare *w)
1760{ 2725{
1761 ev_clear_pending (EV_A_ (W)w); 2726 clear_pending (EV_A_ (W)w);
1762 if (expect_false (!ev_is_active (w))) 2727 if (expect_false (!ev_is_active (w)))
1763 return; 2728 return;
1764 2729
2730 EV_FREQUENT_CHECK;
2731
1765 { 2732 {
1766 int active = ((W)w)->active; 2733 int active = ev_active (w);
2734
1767 prepares [active - 1] = prepares [--preparecnt]; 2735 prepares [active - 1] = prepares [--preparecnt];
1768 ((W)prepares [active - 1])->active = active; 2736 ev_active (prepares [active - 1]) = active;
1769 } 2737 }
1770 2738
1771 ev_stop (EV_A_ (W)w); 2739 ev_stop (EV_A_ (W)w);
2740
2741 EV_FREQUENT_CHECK;
1772} 2742}
1773 2743
1774void 2744void
1775ev_check_start (EV_P_ ev_check *w) 2745ev_check_start (EV_P_ ev_check *w)
1776{ 2746{
1777 if (expect_false (ev_is_active (w))) 2747 if (expect_false (ev_is_active (w)))
1778 return; 2748 return;
2749
2750 EV_FREQUENT_CHECK;
1779 2751
1780 ev_start (EV_A_ (W)w, ++checkcnt); 2752 ev_start (EV_A_ (W)w, ++checkcnt);
1781 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2753 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1782 checks [checkcnt - 1] = w; 2754 checks [checkcnt - 1] = w;
2755
2756 EV_FREQUENT_CHECK;
1783} 2757}
1784 2758
1785void 2759void
1786ev_check_stop (EV_P_ ev_check *w) 2760ev_check_stop (EV_P_ ev_check *w)
1787{ 2761{
1788 ev_clear_pending (EV_A_ (W)w); 2762 clear_pending (EV_A_ (W)w);
1789 if (expect_false (!ev_is_active (w))) 2763 if (expect_false (!ev_is_active (w)))
1790 return; 2764 return;
1791 2765
2766 EV_FREQUENT_CHECK;
2767
1792 { 2768 {
1793 int active = ((W)w)->active; 2769 int active = ev_active (w);
2770
1794 checks [active - 1] = checks [--checkcnt]; 2771 checks [active - 1] = checks [--checkcnt];
1795 ((W)checks [active - 1])->active = active; 2772 ev_active (checks [active - 1]) = active;
1796 } 2773 }
1797 2774
1798 ev_stop (EV_A_ (W)w); 2775 ev_stop (EV_A_ (W)w);
2776
2777 EV_FREQUENT_CHECK;
1799} 2778}
1800 2779
1801#if EV_EMBED_ENABLE 2780#if EV_EMBED_ENABLE
1802void noinline 2781void noinline
1803ev_embed_sweep (EV_P_ ev_embed *w) 2782ev_embed_sweep (EV_P_ ev_embed *w)
1804{ 2783{
1805 ev_loop (w->loop, EVLOOP_NONBLOCK); 2784 ev_loop (w->other, EVLOOP_NONBLOCK);
1806} 2785}
1807 2786
1808static void 2787static void
1809embed_cb (EV_P_ ev_io *io, int revents) 2788embed_io_cb (EV_P_ ev_io *io, int revents)
1810{ 2789{
1811 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2790 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1812 2791
1813 if (ev_cb (w)) 2792 if (ev_cb (w))
1814 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2793 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815 else 2794 else
1816 ev_embed_sweep (loop, w); 2795 ev_loop (w->other, EVLOOP_NONBLOCK);
1817} 2796}
2797
2798static void
2799embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2800{
2801 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2802
2803 {
2804 struct ev_loop *loop = w->other;
2805
2806 while (fdchangecnt)
2807 {
2808 fd_reify (EV_A);
2809 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2810 }
2811 }
2812}
2813
2814#if 0
2815static void
2816embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2817{
2818 ev_idle_stop (EV_A_ idle);
2819}
2820#endif
1818 2821
1819void 2822void
1820ev_embed_start (EV_P_ ev_embed *w) 2823ev_embed_start (EV_P_ ev_embed *w)
1821{ 2824{
1822 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
1823 return; 2826 return;
1824 2827
1825 { 2828 {
1826 struct ev_loop *loop = w->loop; 2829 struct ev_loop *loop = w->other;
1827 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2830 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2831 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829 } 2832 }
2833
2834 EV_FREQUENT_CHECK;
1830 2835
1831 ev_set_priority (&w->io, ev_priority (w)); 2836 ev_set_priority (&w->io, ev_priority (w));
1832 ev_io_start (EV_A_ &w->io); 2837 ev_io_start (EV_A_ &w->io);
1833 2838
2839 ev_prepare_init (&w->prepare, embed_prepare_cb);
2840 ev_set_priority (&w->prepare, EV_MINPRI);
2841 ev_prepare_start (EV_A_ &w->prepare);
2842
2843 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2844
1834 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
1835} 2848}
1836 2849
1837void 2850void
1838ev_embed_stop (EV_P_ ev_embed *w) 2851ev_embed_stop (EV_P_ ev_embed *w)
1839{ 2852{
1840 ev_clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
1841 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
1842 return; 2855 return;
1843 2856
2857 EV_FREQUENT_CHECK;
2858
1844 ev_io_stop (EV_A_ &w->io); 2859 ev_io_stop (EV_A_ &w->io);
2860 ev_prepare_stop (EV_A_ &w->prepare);
1845 2861
1846 ev_stop (EV_A_ (W)w); 2862 ev_stop (EV_A_ (W)w);
2863
2864 EV_FREQUENT_CHECK;
1847} 2865}
1848#endif 2866#endif
1849 2867
1850#if EV_FORK_ENABLE 2868#if EV_FORK_ENABLE
1851void 2869void
1852ev_fork_start (EV_P_ ev_fork *w) 2870ev_fork_start (EV_P_ ev_fork *w)
1853{ 2871{
1854 if (expect_false (ev_is_active (w))) 2872 if (expect_false (ev_is_active (w)))
1855 return; 2873 return;
2874
2875 EV_FREQUENT_CHECK;
1856 2876
1857 ev_start (EV_A_ (W)w, ++forkcnt); 2877 ev_start (EV_A_ (W)w, ++forkcnt);
1858 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2878 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1859 forks [forkcnt - 1] = w; 2879 forks [forkcnt - 1] = w;
2880
2881 EV_FREQUENT_CHECK;
1860} 2882}
1861 2883
1862void 2884void
1863ev_fork_stop (EV_P_ ev_fork *w) 2885ev_fork_stop (EV_P_ ev_fork *w)
1864{ 2886{
1865 ev_clear_pending (EV_A_ (W)w); 2887 clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w))) 2888 if (expect_false (!ev_is_active (w)))
1867 return; 2889 return;
1868 2890
2891 EV_FREQUENT_CHECK;
2892
1869 { 2893 {
1870 int active = ((W)w)->active; 2894 int active = ev_active (w);
2895
1871 forks [active - 1] = forks [--forkcnt]; 2896 forks [active - 1] = forks [--forkcnt];
1872 ((W)forks [active - 1])->active = active; 2897 ev_active (forks [active - 1]) = active;
1873 } 2898 }
1874 2899
1875 ev_stop (EV_A_ (W)w); 2900 ev_stop (EV_A_ (W)w);
2901
2902 EV_FREQUENT_CHECK;
2903}
2904#endif
2905
2906#if EV_ASYNC_ENABLE
2907void
2908ev_async_start (EV_P_ ev_async *w)
2909{
2910 if (expect_false (ev_is_active (w)))
2911 return;
2912
2913 evpipe_init (EV_A);
2914
2915 EV_FREQUENT_CHECK;
2916
2917 ev_start (EV_A_ (W)w, ++asynccnt);
2918 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2919 asyncs [asynccnt - 1] = w;
2920
2921 EV_FREQUENT_CHECK;
2922}
2923
2924void
2925ev_async_stop (EV_P_ ev_async *w)
2926{
2927 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w)))
2929 return;
2930
2931 EV_FREQUENT_CHECK;
2932
2933 {
2934 int active = ev_active (w);
2935
2936 asyncs [active - 1] = asyncs [--asynccnt];
2937 ev_active (asyncs [active - 1]) = active;
2938 }
2939
2940 ev_stop (EV_A_ (W)w);
2941
2942 EV_FREQUENT_CHECK;
2943}
2944
2945void
2946ev_async_send (EV_P_ ev_async *w)
2947{
2948 w->sent = 1;
2949 evpipe_write (EV_A_ &gotasync);
1876} 2950}
1877#endif 2951#endif
1878 2952
1879/*****************************************************************************/ 2953/*****************************************************************************/
1880 2954
… …
1938 ev_timer_set (&once->to, timeout, 0.); 3012 ev_timer_set (&once->to, timeout, 0.);
1939 ev_timer_start (EV_A_ &once->to); 3013 ev_timer_start (EV_A_ &once->to);
1940 } 3014 }
1941} 3015}
1942 3016
3017#if EV_MULTIPLICITY
3018 #include "ev_wrap.h"
3019#endif
3020
1943#ifdef __cplusplus 3021#ifdef __cplusplus
1944} 3022}
1945#endif 3023#endif
1946 3024

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