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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.249 by root, Wed May 21 23:30:52 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
159#endif 206#endif
160 207
161/**/ 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
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
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 1
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL
248#endif
249
250#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL
252#endif
253
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 255
163#ifndef CLOCK_MONOTONIC 256#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 257# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
166#endif 259#endif
… …
168#ifndef CLOCK_REALTIME 261#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 262# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME 0
171#endif 264#endif
172 265
266#if !EV_STAT_ENABLE
267# undef EV_USE_INOTIFY
268# define EV_USE_INOTIFY 0
269#endif
270
271#if !EV_USE_NANOSLEEP
272# ifndef _WIN32
273# include <sys/select.h>
274# endif
275#endif
276
277#if EV_USE_INOTIFY
278# include <sys/inotify.h>
279#endif
280
173#if EV_SELECT_IS_WINSOCKET 281#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 282# include <winsock.h>
175#endif 283#endif
176 284
285#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h>
288# ifdef __cplusplus
289extern "C" {
290# endif
291int eventfd (unsigned int initval, int flags);
292# ifdef __cplusplus
293}
294# endif
295#endif
296
177/**/ 297/**/
298
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else
307# define EV_FREQUENT_CHECK do { } while (0)
308#endif
309
310/*
311 * This is used to avoid floating point rounding problems.
312 * It is added to ev_rt_now when scheduling periodics
313 * to ensure progress, time-wise, even when rounding
314 * errors are against us.
315 * This value is good at least till the year 4000.
316 * Better solutions welcome.
317 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 319
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 323
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 324#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 325# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 326# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 327#else
201# define expect(expr,value) (expr) 328# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 329# define noinline
330# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
331# define inline
332# endif
205#endif 333#endif
206 334
207#define expect_false(expr) expect ((expr) != 0, 0) 335#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 336#define expect_true(expr) expect ((expr) != 0, 1)
337#define inline_size static inline
338
339#if EV_MINIMAL
340# define inline_speed static noinline
341#else
342# define inline_speed static inline
343#endif
209 344
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 347
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 348#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 349#define EMPTY2(a,b) /* used to suppress some warnings */
215 350
216typedef ev_watcher *W; 351typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 352typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 353typedef ev_watcher_time *WT;
219 354
355#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at
357
358#if EV_USE_MONOTONIC
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
362#endif
221 363
222#ifdef _WIN32 364#ifdef _WIN32
223# include "ev_win32.c" 365# include "ev_win32.c"
224#endif 366#endif
225 367
226/*****************************************************************************/ 368/*****************************************************************************/
227 369
228static void (*syserr_cb)(const char *msg); 370static void (*syserr_cb)(const char *msg);
229 371
372void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 373ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 374{
232 syserr_cb = cb; 375 syserr_cb = cb;
233} 376}
234 377
235static void 378static void noinline
236syserr (const char *msg) 379syserr (const char *msg)
237{ 380{
238 if (!msg) 381 if (!msg)
239 msg = "(libev) system error"; 382 msg = "(libev) system error";
240 383
… …
245 perror (msg); 388 perror (msg);
246 abort (); 389 abort ();
247 } 390 }
248} 391}
249 392
393static void *
394ev_realloc_emul (void *ptr, long size)
395{
396 /* some systems, notably openbsd and darwin, fail to properly
397 * implement realloc (x, 0) (as required by both ansi c-98 and
398 * the single unix specification, so work around them here.
399 */
400
401 if (size)
402 return realloc (ptr, size);
403
404 free (ptr);
405 return 0;
406}
407
250static void *(*alloc)(void *ptr, long size); 408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251 409
410void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 411ev_set_allocator (void *(*cb)(void *ptr, long size))
253{ 412{
254 alloc = cb; 413 alloc = cb;
255} 414}
256 415
257static void * 416inline_speed void *
258ev_realloc (void *ptr, long size) 417ev_realloc (void *ptr, long size)
259{ 418{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 419 ptr = alloc (ptr, size);
261 420
262 if (!ptr && size) 421 if (!ptr && size)
263 { 422 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265 abort (); 424 abort ();
… …
286typedef struct 445typedef struct
287{ 446{
288 W w; 447 W w;
289 int events; 448 int events;
290} ANPENDING; 449} ANPENDING;
450
451#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */
453typedef struct
454{
455 WL head;
456} ANFS;
457#endif
458
459/* Heap Entry */
460#if EV_HEAP_CACHE_AT
461 typedef struct {
462 ev_tstamp at;
463 WT w;
464 } ANHE;
465
466 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else
470 typedef WT ANHE;
471
472 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he)
475#endif
291 476
292#if EV_MULTIPLICITY 477#if EV_MULTIPLICITY
293 478
294 struct ev_loop 479 struct ev_loop
295 { 480 {
… …
315 500
316#endif 501#endif
317 502
318/*****************************************************************************/ 503/*****************************************************************************/
319 504
320ev_tstamp noinline 505ev_tstamp
321ev_time (void) 506ev_time (void)
322{ 507{
323#if EV_USE_REALTIME 508#if EV_USE_REALTIME
324 struct timespec ts; 509 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 510 clock_gettime (CLOCK_REALTIME, &ts);
… …
352{ 537{
353 return ev_rt_now; 538 return ev_rt_now;
354} 539}
355#endif 540#endif
356 541
357#define array_roundsize(type,n) (((n) | 4) & ~3) 542void
543ev_sleep (ev_tstamp delay)
544{
545 if (delay > 0.)
546 {
547#if EV_USE_NANOSLEEP
548 struct timespec ts;
549
550 ts.tv_sec = (time_t)delay;
551 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553 nanosleep (&ts, 0);
554#elif defined(_WIN32)
555 Sleep ((unsigned long)(delay * 1e3));
556#else
557 struct timeval tv;
558
559 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561
562 select (0, 0, 0, 0, &tv);
563#endif
564 }
565}
566
567/*****************************************************************************/
568
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570
571int inline_size
572array_nextsize (int elem, int cur, int cnt)
573{
574 int ncur = cur + 1;
575
576 do
577 ncur <<= 1;
578 while (cnt > ncur);
579
580 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
581 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
582 {
583 ncur *= elem;
584 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
585 ncur = ncur - sizeof (void *) * 4;
586 ncur /= elem;
587 }
588
589 return ncur;
590}
591
592static noinline void *
593array_realloc (int elem, void *base, int *cur, int cnt)
594{
595 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur);
597}
358 598
359#define array_needsize(type,base,cur,cnt,init) \ 599#define array_needsize(type,base,cur,cnt,init) \
360 if (expect_false ((cnt) > cur)) \ 600 if (expect_false ((cnt) > (cur))) \
361 { \ 601 { \
362 int newcnt = cur; \ 602 int ocur_ = (cur); \
363 do \ 603 (base) = (type *)array_realloc \
364 { \ 604 (sizeof (type), (base), &(cur), (cnt)); \
365 newcnt = array_roundsize (type, newcnt << 1); \ 605 init ((base) + (ocur_), (cur) - ocur_); \
366 } \
367 while ((cnt) > newcnt); \
368 \
369 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370 init (base + cur, newcnt - cur); \
371 cur = newcnt; \
372 } 606 }
373 607
608#if 0
374#define array_slim(type,stem) \ 609#define array_slim(type,stem) \
375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 610 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376 { \ 611 { \
377 stem ## max = array_roundsize (stem ## cnt >> 1); \ 612 stem ## max = array_roundsize (stem ## cnt >> 1); \
378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 613 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380 } 615 }
616#endif
381 617
382#define array_free(stem, idx) \ 618#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
620
621/*****************************************************************************/
622
623void noinline
624ev_feed_event (EV_P_ void *w, int revents)
625{
626 W w_ = (W)w;
627 int pri = ABSPRI (w_);
628
629 if (expect_false (w_->pending))
630 pendings [pri][w_->pending - 1].events |= revents;
631 else
632 {
633 w_->pending = ++pendingcnt [pri];
634 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
635 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents;
637 }
638}
639
640void inline_speed
641queue_events (EV_P_ W *events, int eventcnt, int type)
642{
643 int i;
644
645 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type);
647}
384 648
385/*****************************************************************************/ 649/*****************************************************************************/
386 650
387void inline_size 651void inline_size
388anfds_init (ANFD *base, int count) 652anfds_init (ANFD *base, int count)
… …
395 659
396 ++base; 660 ++base;
397 } 661 }
398} 662}
399 663
400void noinline
401ev_feed_event (EV_P_ void *w, int revents)
402{
403 W w_ = (W)w;
404
405 if (expect_false (w_->pending))
406 {
407 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408 return;
409 }
410
411 w_->pending = ++pendingcnt [ABSPRI (w_)];
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415}
416
417static void
418queue_events (EV_P_ W *events, int eventcnt, int type)
419{
420 int i;
421
422 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type);
424}
425
426void inline_speed 664void inline_speed
427fd_event (EV_P_ int fd, int revents) 665fd_event (EV_P_ int fd, int revents)
428{ 666{
429 ANFD *anfd = anfds + fd; 667 ANFD *anfd = anfds + fd;
430 ev_io *w; 668 ev_io *w;
… …
439} 677}
440 678
441void 679void
442ev_feed_fd_event (EV_P_ int fd, int revents) 680ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 681{
682 if (fd >= 0 && fd < anfdmax)
444 fd_event (EV_A_ fd, revents); 683 fd_event (EV_A_ fd, revents);
445} 684}
446
447/*****************************************************************************/
448 685
449void inline_size 686void inline_size
450fd_reify (EV_P) 687fd_reify (EV_P)
451{ 688{
452 int i; 689 int i;
… …
455 { 692 {
456 int fd = fdchanges [i]; 693 int fd = fdchanges [i];
457 ANFD *anfd = anfds + fd; 694 ANFD *anfd = anfds + fd;
458 ev_io *w; 695 ev_io *w;
459 696
460 int events = 0; 697 unsigned char events = 0;
461 698
462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 699 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463 events |= w->events; 700 events |= (unsigned char)w->events;
464 701
465#if EV_SELECT_IS_WINSOCKET 702#if EV_SELECT_IS_WINSOCKET
466 if (events) 703 if (events)
467 { 704 {
468 unsigned long argp; 705 unsigned long argp;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
469 anfd->handle = _get_osfhandle (fd); 709 anfd->handle = _get_osfhandle (fd);
710 #endif
470 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471 } 712 }
472#endif 713#endif
473 714
715 {
716 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify;
718
474 anfd->reify = 0; 719 anfd->reify = 0;
475
476 backend_modify (EV_A_ fd, anfd->events, events);
477 anfd->events = events; 720 anfd->events = events;
721
722 if (o_events != events || o_reify & EV_IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events);
724 }
478 } 725 }
479 726
480 fdchangecnt = 0; 727 fdchangecnt = 0;
481} 728}
482 729
483void inline_size 730void inline_size
484fd_change (EV_P_ int fd) 731fd_change (EV_P_ int fd, int flags)
485{ 732{
486 if (expect_false (anfds [fd].reify)) 733 unsigned char reify = anfds [fd].reify;
487 return;
488
489 anfds [fd].reify = 1; 734 anfds [fd].reify |= flags;
490 735
736 if (expect_true (!reify))
737 {
491 ++fdchangecnt; 738 ++fdchangecnt;
492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493 fdchanges [fdchangecnt - 1] = fd; 740 fdchanges [fdchangecnt - 1] = fd;
741 }
494} 742}
495 743
496void inline_speed 744void inline_speed
497fd_kill (EV_P_ int fd) 745fd_kill (EV_P_ int fd)
498{ 746{
… …
545static void noinline 793static void noinline
546fd_rearm_all (EV_P) 794fd_rearm_all (EV_P)
547{ 795{
548 int fd; 796 int fd;
549 797
550 /* this should be highly optimised to not do anything but set a flag */
551 for (fd = 0; fd < anfdmax; ++fd) 798 for (fd = 0; fd < anfdmax; ++fd)
552 if (anfds [fd].events) 799 if (anfds [fd].events)
553 { 800 {
554 anfds [fd].events = 0; 801 anfds [fd].events = 0;
555 fd_change (EV_A_ fd); 802 fd_change (EV_A_ fd, EV_IOFDSET | 1);
556 } 803 }
557} 804}
558 805
559/*****************************************************************************/ 806/*****************************************************************************/
560 807
808/*
809 * the heap functions want a real array index. array index 0 uis guaranteed to not
810 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811 * the branching factor of the d-tree.
812 */
813
814/*
815 * at the moment we allow libev the luxury of two heaps,
816 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
817 * which is more cache-efficient.
818 * the difference is about 5% with 50000+ watchers.
819 */
820#if EV_USE_4HEAP
821
822#define DHEAP 4
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k))
826
827/* away from the root */
561void inline_speed 828void inline_speed
562upheap (WT *heap, int k) 829downheap (ANHE *heap, int N, int k)
563{ 830{
564 WT w = heap [k]; 831 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0;
565 833
566 while (k && heap [k >> 1]->at > w->at) 834 for (;;)
567 {
568 heap [k] = heap [k >> 1];
569 ((W)heap [k])->active = k + 1;
570 k >>= 1;
571 } 835 {
836 ev_tstamp minat;
837 ANHE *minpos;
838 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
572 839
840 /* find minimum child */
841 if (expect_true (pos + DHEAP - 1 < E))
842 {
843 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
846 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
847 }
848 else if (pos < E)
849 {
850 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
851 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else
856 break;
857
858 if (ANHE_at (he) <= minat)
859 break;
860
861 heap [k] = *minpos;
862 ev_active (ANHE_w (*minpos)) = k;
863
864 k = minpos - heap;
865 }
866
573 heap [k] = w; 867 heap [k] = he;
574 ((W)heap [k])->active = k + 1; 868 ev_active (ANHE_w (he)) = k;
575
576} 869}
577 870
871#else /* 4HEAP */
872
873#define HEAP0 1
874#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p))
876
877/* away from the root */
578void inline_speed 878void inline_speed
579downheap (WT *heap, int N, int k) 879downheap (ANHE *heap, int N, int k)
580{ 880{
581 WT w = heap [k]; 881 ANHE he = heap [k];
582 882
583 while (k < (N >> 1)) 883 for (;;)
584 { 884 {
585 int j = k << 1; 885 int c = k << 1;
586 886
587 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 887 if (c > N + HEAP0 - 1)
588 ++j;
589
590 if (w->at <= heap [j]->at)
591 break; 888 break;
592 889
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0;
892
893 if (ANHE_at (he) <= ANHE_at (heap [c]))
894 break;
895
593 heap [k] = heap [j]; 896 heap [k] = heap [c];
594 ((W)heap [k])->active = k + 1; 897 ev_active (ANHE_w (heap [k])) = k;
898
595 k = j; 899 k = c;
596 } 900 }
597 901
598 heap [k] = w; 902 heap [k] = he;
599 ((W)heap [k])->active = k + 1; 903 ev_active (ANHE_w (he)) = k;
904}
905#endif
906
907/* towards the root */
908void inline_speed
909upheap (ANHE *heap, int k)
910{
911 ANHE he = heap [k];
912
913 for (;;)
914 {
915 int p = HPARENT (k);
916
917 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
918 break;
919
920 heap [k] = heap [p];
921 ev_active (ANHE_w (heap [k])) = k;
922 k = p;
923 }
924
925 heap [k] = he;
926 ev_active (ANHE_w (he)) = k;
600} 927}
601 928
602void inline_size 929void inline_size
603adjustheap (WT *heap, int N, int k) 930adjustheap (ANHE *heap, int N, int k)
604{ 931{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
605 upheap (heap, k); 933 upheap (heap, k);
934 else
606 downheap (heap, N, k); 935 downheap (heap, N, k);
607} 936}
937
938/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size
940reheap (ANHE *heap, int N)
941{
942 int i;
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);
947}
948
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
608 963
609/*****************************************************************************/ 964/*****************************************************************************/
610 965
611typedef struct 966typedef struct
612{ 967{
613 WL head; 968 WL head;
614 sig_atomic_t volatile gotsig; 969 EV_ATOMIC_T gotsig;
615} ANSIG; 970} ANSIG;
616 971
617static ANSIG *signals; 972static ANSIG *signals;
618static int signalmax; 973static int signalmax;
619 974
620static int sigpipe [2]; 975static EV_ATOMIC_T gotsig;
621static sig_atomic_t volatile gotsig;
622static ev_io sigev;
623 976
624void inline_size 977void inline_size
625signals_init (ANSIG *base, int count) 978signals_init (ANSIG *base, int count)
626{ 979{
627 while (count--) 980 while (count--)
… …
631 984
632 ++base; 985 ++base;
633 } 986 }
634} 987}
635 988
636static void 989/*****************************************************************************/
637sighandler (int signum)
638{
639#if _WIN32
640 signal (signum, sighandler);
641#endif
642 990
643 signals [signum - 1].gotsig = 1;
644
645 if (!gotsig)
646 {
647 int old_errno = errno;
648 gotsig = 1;
649 write (sigpipe [1], &signum, 1);
650 errno = old_errno;
651 }
652}
653
654void noinline
655ev_feed_signal_event (EV_P_ int signum)
656{
657 WL w;
658
659#if EV_MULTIPLICITY
660 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
661#endif
662
663 --signum;
664
665 if (signum < 0 || signum >= signalmax)
666 return;
667
668 signals [signum].gotsig = 0;
669
670 for (w = signals [signum].head; w; w = w->next)
671 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
672}
673
674static void
675sigcb (EV_P_ ev_io *iow, int revents)
676{
677 int signum;
678
679 read (sigpipe [0], &revents, 1);
680 gotsig = 0;
681
682 for (signum = signalmax; signum--; )
683 if (signals [signum].gotsig)
684 ev_feed_signal_event (EV_A_ signum + 1);
685}
686
687void inline_size 991void inline_speed
688fd_intern (int fd) 992fd_intern (int fd)
689{ 993{
690#ifdef _WIN32 994#ifdef _WIN32
691 int arg = 1; 995 int arg = 1;
692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
695 fcntl (fd, F_SETFL, O_NONBLOCK); 999 fcntl (fd, F_SETFL, O_NONBLOCK);
696#endif 1000#endif
697} 1001}
698 1002
699static void noinline 1003static void noinline
700siginit (EV_P) 1004evpipe_init (EV_P)
701{ 1005{
1006 if (!ev_is_active (&pipeev))
1007 {
1008#if EV_USE_EVENTFD
1009 if ((evfd = eventfd (0, 0)) >= 0)
1010 {
1011 evpipe [0] = -1;
1012 fd_intern (evfd);
1013 ev_io_set (&pipeev, evfd, EV_READ);
1014 }
1015 else
1016#endif
1017 {
1018 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe");
1020
702 fd_intern (sigpipe [0]); 1021 fd_intern (evpipe [0]);
703 fd_intern (sigpipe [1]); 1022 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ);
1024 }
704 1025
705 ev_io_set (&sigev, sigpipe [0], EV_READ);
706 ev_io_start (EV_A_ &sigev); 1026 ev_io_start (EV_A_ &pipeev);
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1027 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 }
1029}
1030
1031void inline_size
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{
1034 if (!*flag)
1035 {
1036 int old_errno = errno; /* save errno because write might clobber it */
1037
1038 *flag = 1;
1039
1040#if EV_USE_EVENTFD
1041 if (evfd >= 0)
1042 {
1043 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t));
1045 }
1046 else
1047#endif
1048 write (evpipe [1], &old_errno, 1);
1049
1050 errno = old_errno;
1051 }
1052}
1053
1054static void
1055pipecb (EV_P_ ev_io *iow, int revents)
1056{
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 {
1066 char dummy;
1067 read (evpipe [0], &dummy, 1);
1068 }
1069
1070 if (gotsig && ev_is_default_loop (EV_A))
1071 {
1072 int signum;
1073 gotsig = 0;
1074
1075 for (signum = signalmax; signum--; )
1076 if (signals [signum].gotsig)
1077 ev_feed_signal_event (EV_A_ signum + 1);
1078 }
1079
1080#if EV_ASYNC_ENABLE
1081 if (gotasync)
1082 {
1083 int i;
1084 gotasync = 0;
1085
1086 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent)
1088 {
1089 asyncs [i]->sent = 0;
1090 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1091 }
1092 }
1093#endif
708} 1094}
709 1095
710/*****************************************************************************/ 1096/*****************************************************************************/
711 1097
1098static void
1099ev_sighandler (int signum)
1100{
1101#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct;
1103#endif
1104
1105#if _WIN32
1106 signal (signum, ev_sighandler);
1107#endif
1108
1109 signals [signum - 1].gotsig = 1;
1110 evpipe_write (EV_A_ &gotsig);
1111}
1112
1113void noinline
1114ev_feed_signal_event (EV_P_ int signum)
1115{
1116 WL w;
1117
1118#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120#endif
1121
1122 --signum;
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return;
1126
1127 signals [signum].gotsig = 0;
1128
1129 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131}
1132
1133/*****************************************************************************/
1134
712static ev_child *childs [PID_HASHSIZE]; 1135static WL childs [EV_PID_HASHSIZE];
713 1136
714#ifndef _WIN32 1137#ifndef _WIN32
715 1138
716static ev_signal childev; 1139static ev_signal childev;
1140
1141#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0
1143#endif
1144
1145void inline_speed
1146child_reap (EV_P_ int chain, int pid, int status)
1147{
1148 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150
1151 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1152 {
1153 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1)))
1155 {
1156 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1157 w->rpid = pid;
1158 w->rstatus = status;
1159 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1160 }
1161 }
1162}
717 1163
718#ifndef WCONTINUED 1164#ifndef WCONTINUED
719# define WCONTINUED 0 1165# define WCONTINUED 0
720#endif 1166#endif
721 1167
722void inline_speed
723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724{
725 ev_child *w;
726
727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728 if (w->pid == pid || !w->pid)
729 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid;
732 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 }
735}
736
737static void 1168static void
738childcb (EV_P_ ev_signal *sw, int revents) 1169childcb (EV_P_ ev_signal *sw, int revents)
739{ 1170{
740 int pid, status; 1171 int pid, status;
741 1172
1173 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1174 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 1175 if (!WCONTINUED
1176 || errno != EINVAL
1177 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1178 return;
1179
744 /* make sure we are called again until all childs have been reaped */ 1180 /* make sure we are called again until all children have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */ 1181 /* we need to do it this way so that the callback gets called before we continue */
746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 1183
748 child_reap (EV_A_ sw, pid, pid, status); 1184 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1)
749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1186 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 1187}
752 1188
753#endif 1189#endif
754 1190
755/*****************************************************************************/ 1191/*****************************************************************************/
… …
827} 1263}
828 1264
829unsigned int 1265unsigned int
830ev_embeddable_backends (void) 1266ev_embeddable_backends (void)
831{ 1267{
832 return EVBACKEND_EPOLL 1268 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833 | EVBACKEND_KQUEUE 1269
834 | EVBACKEND_PORT; 1270 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1271 /* please fix it and tell me how to detect the fix */
1272 flags &= ~EVBACKEND_EPOLL;
1273
1274 return flags;
835} 1275}
836 1276
837unsigned int 1277unsigned int
838ev_backend (EV_P) 1278ev_backend (EV_P)
839{ 1279{
840 return backend; 1280 return backend;
841} 1281}
842 1282
843static void 1283unsigned int
1284ev_loop_count (EV_P)
1285{
1286 return loop_count;
1287}
1288
1289void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{
1292 io_blocktime = interval;
1293}
1294
1295void
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{
1298 timeout_blocktime = interval;
1299}
1300
1301static void noinline
844loop_init (EV_P_ unsigned int flags) 1302loop_init (EV_P_ unsigned int flags)
845{ 1303{
846 if (!backend) 1304 if (!backend)
847 { 1305 {
848#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
… …
851 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852 have_monotonic = 1; 1310 have_monotonic = 1;
853 } 1311 }
854#endif 1312#endif
855 1313
856 ev_rt_now = ev_time (); 1314 ev_rt_now = ev_time ();
857 mn_now = get_clock (); 1315 mn_now = get_clock ();
858 now_floor = mn_now; 1316 now_floor = mn_now;
859 rtmn_diff = ev_rt_now - mn_now; 1317 rtmn_diff = ev_rt_now - mn_now;
1318
1319 io_blocktime = 0.;
1320 timeout_blocktime = 0.;
1321 backend = 0;
1322 backend_fd = -1;
1323 gotasync = 0;
1324#if EV_USE_INOTIFY
1325 fs_fd = -2;
1326#endif
1327
1328 /* pid check not overridable via env */
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif
860 1333
861 if (!(flags & EVFLAG_NOENV) 1334 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure () 1335 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS")) 1336 && getenv ("LIBEV_FLAGS"))
864 flags = atoi (getenv ("LIBEV_FLAGS")); 1337 flags = atoi (getenv ("LIBEV_FLAGS"));
865 1338
866 if (!(flags & 0x0000ffffUL)) 1339 if (!(flags & 0x0000ffffU))
867 flags |= ev_recommended_backends (); 1340 flags |= ev_recommended_backends ();
868 1341
869 backend = 0;
870#if EV_USE_PORT 1342#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1343 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 1344#endif
873#if EV_USE_KQUEUE 1345#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1346 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
881#endif 1353#endif
882#if EV_USE_SELECT 1354#if EV_USE_SELECT
883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884#endif 1356#endif
885 1357
886 ev_init (&sigev, sigcb); 1358 ev_init (&pipeev, pipecb);
887 ev_set_priority (&sigev, EV_MAXPRI); 1359 ev_set_priority (&pipeev, EV_MAXPRI);
888 } 1360 }
889} 1361}
890 1362
891static void 1363static void noinline
892loop_destroy (EV_P) 1364loop_destroy (EV_P)
893{ 1365{
894 int i; 1366 int i;
1367
1368 if (ev_is_active (&pipeev))
1369 {
1370 ev_ref (EV_A); /* signal watcher */
1371 ev_io_stop (EV_A_ &pipeev);
1372
1373#if EV_USE_EVENTFD
1374 if (evfd >= 0)
1375 close (evfd);
1376#endif
1377
1378 if (evpipe [0] >= 0)
1379 {
1380 close (evpipe [0]);
1381 close (evpipe [1]);
1382 }
1383 }
1384
1385#if EV_USE_INOTIFY
1386 if (fs_fd >= 0)
1387 close (fs_fd);
1388#endif
1389
1390 if (backend_fd >= 0)
1391 close (backend_fd);
895 1392
896#if EV_USE_PORT 1393#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1394 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 1395#endif
899#if EV_USE_KQUEUE 1396#if EV_USE_KQUEUE
… …
908#if EV_USE_SELECT 1405#if EV_USE_SELECT
909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1406 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910#endif 1407#endif
911 1408
912 for (i = NUMPRI; i--; ) 1409 for (i = NUMPRI; i--; )
1410 {
913 array_free (pending, [i]); 1411 array_free (pending, [i]);
1412#if EV_IDLE_ENABLE
1413 array_free (idle, [i]);
1414#endif
1415 }
1416
1417 ev_free (anfds); anfdmax = 0;
914 1418
915 /* have to use the microsoft-never-gets-it-right macro */ 1419 /* have to use the microsoft-never-gets-it-right macro */
916 array_free (fdchange, EMPTY0); 1420 array_free (fdchange, EMPTY);
917 array_free (timer, EMPTY0); 1421 array_free (timer, EMPTY);
918#if EV_PERIODIC_ENABLE 1422#if EV_PERIODIC_ENABLE
919 array_free (periodic, EMPTY0); 1423 array_free (periodic, EMPTY);
920#endif 1424#endif
1425#if EV_FORK_ENABLE
921 array_free (idle, EMPTY0); 1426 array_free (fork, EMPTY);
1427#endif
922 array_free (prepare, EMPTY0); 1428 array_free (prepare, EMPTY);
923 array_free (check, EMPTY0); 1429 array_free (check, EMPTY);
1430#if EV_ASYNC_ENABLE
1431 array_free (async, EMPTY);
1432#endif
924 1433
925 backend = 0; 1434 backend = 0;
926} 1435}
927 1436
928static void 1437#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P);
1439#endif
1440
1441void inline_size
929loop_fork (EV_P) 1442loop_fork (EV_P)
930{ 1443{
931#if EV_USE_PORT 1444#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 1446#endif
… …
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1448 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif 1449#endif
937#if EV_USE_EPOLL 1450#if EV_USE_EPOLL
938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1451 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939#endif 1452#endif
1453#if EV_USE_INOTIFY
1454 infy_fork (EV_A);
1455#endif
940 1456
941 if (ev_is_active (&sigev)) 1457 if (ev_is_active (&pipeev))
942 { 1458 {
943 /* default loop */ 1459 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */
1461 gotsig = 1;
1462#if EV_ASYNC_ENABLE
1463 gotasync = 1;
1464#endif
944 1465
945 ev_ref (EV_A); 1466 ev_ref (EV_A);
946 ev_io_stop (EV_A_ &sigev); 1467 ev_io_stop (EV_A_ &pipeev);
1468
1469#if EV_USE_EVENTFD
1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
947 close (sigpipe [0]); 1476 close (evpipe [0]);
948 close (sigpipe [1]); 1477 close (evpipe [1]);
1478 }
949 1479
950 while (pipe (sigpipe))
951 syserr ("(libev) error creating pipe");
952
953 siginit (EV_A); 1480 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ);
954 } 1483 }
955 1484
956 postfork = 0; 1485 postfork = 0;
957} 1486}
958 1487
… …
980} 1509}
981 1510
982void 1511void
983ev_loop_fork (EV_P) 1512ev_loop_fork (EV_P)
984{ 1513{
985 postfork = 1; 1514 postfork = 1; /* must be in line with ev_default_fork */
986} 1515}
1516
1517#if EV_VERIFY
1518static void
1519array_check (W **ws, int cnt)
1520{
1521 while (cnt--)
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1523}
1524
1525static void
1526ev_loop_verify (EV_P)
1527{
1528 int i;
1529
1530 checkheap (timers, timercnt);
1531#if EV_PERIODIC_ENABLE
1532 checkheap (periodics, periodiccnt);
1533#endif
1534
1535#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; )
1537 array_check ((W **)idles [i], idlecnt [i]);
1538#endif
1539#if EV_FORK_ENABLE
1540 array_check ((W **)forks, forkcnt);
1541#endif
1542 array_check ((W **)prepares, preparecnt);
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE
1545 array_check ((W **)asyncs, asynccnt);
1546#endif
1547}
1548#endif
987 1549
988#endif 1550#endif
989 1551
990#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
991struct ev_loop * 1553struct ev_loop *
… …
993#else 1555#else
994int 1556int
995ev_default_loop (unsigned int flags) 1557ev_default_loop (unsigned int flags)
996#endif 1558#endif
997{ 1559{
998 if (sigpipe [0] == sigpipe [1])
999 if (pipe (sigpipe))
1000 return 0;
1001
1002 if (!ev_default_loop_ptr) 1560 if (!ev_default_loop_ptr)
1003 { 1561 {
1004#if EV_MULTIPLICITY 1562#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006#else 1564#else
… …
1009 1567
1010 loop_init (EV_A_ flags); 1568 loop_init (EV_A_ flags);
1011 1569
1012 if (ev_backend (EV_A)) 1570 if (ev_backend (EV_A))
1013 { 1571 {
1014 siginit (EV_A);
1015
1016#ifndef _WIN32 1572#ifndef _WIN32
1017 ev_signal_init (&childev, childcb, SIGCHLD); 1573 ev_signal_init (&childev, childcb, SIGCHLD);
1018 ev_set_priority (&childev, EV_MAXPRI); 1574 ev_set_priority (&childev, EV_MAXPRI);
1019 ev_signal_start (EV_A_ &childev); 1575 ev_signal_start (EV_A_ &childev);
1020 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1576 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1037#ifndef _WIN32 1593#ifndef _WIN32
1038 ev_ref (EV_A); /* child watcher */ 1594 ev_ref (EV_A); /* child watcher */
1039 ev_signal_stop (EV_A_ &childev); 1595 ev_signal_stop (EV_A_ &childev);
1040#endif 1596#endif
1041 1597
1042 ev_ref (EV_A); /* signal watcher */
1043 ev_io_stop (EV_A_ &sigev);
1044
1045 close (sigpipe [0]); sigpipe [0] = 0;
1046 close (sigpipe [1]); sigpipe [1] = 0;
1047
1048 loop_destroy (EV_A); 1598 loop_destroy (EV_A);
1049} 1599}
1050 1600
1051void 1601void
1052ev_default_fork (void) 1602ev_default_fork (void)
… …
1054#if EV_MULTIPLICITY 1604#if EV_MULTIPLICITY
1055 struct ev_loop *loop = ev_default_loop_ptr; 1605 struct ev_loop *loop = ev_default_loop_ptr;
1056#endif 1606#endif
1057 1607
1058 if (backend) 1608 if (backend)
1059 postfork = 1; 1609 postfork = 1; /* must be in line with ev_loop_fork */
1060} 1610}
1061 1611
1062/*****************************************************************************/ 1612/*****************************************************************************/
1063 1613
1064int inline_size 1614void
1065any_pending (EV_P) 1615ev_invoke (EV_P_ void *w, int revents)
1066{ 1616{
1067 int pri; 1617 EV_CB_INVOKE ((W)w, revents);
1068
1069 for (pri = NUMPRI; pri--; )
1070 if (pendingcnt [pri])
1071 return 1;
1072
1073 return 0;
1074} 1618}
1075 1619
1076void inline_speed 1620void inline_speed
1077call_pending (EV_P) 1621call_pending (EV_P)
1078{ 1622{
1079 int pri; 1623 int pri;
1624
1625 EV_FREQUENT_CHECK;
1080 1626
1081 for (pri = NUMPRI; pri--; ) 1627 for (pri = NUMPRI; pri--; )
1082 while (pendingcnt [pri]) 1628 while (pendingcnt [pri])
1083 { 1629 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1631
1086 if (expect_true (p->w)) 1632 if (expect_true (p->w))
1087 { 1633 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1635
1090 p->w->pending = 0; 1636 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1637 EV_CB_INVOKE (p->w, p->events);
1092 } 1638 }
1093 } 1639 }
1640
1641 EV_FREQUENT_CHECK;
1094} 1642}
1643
1644#if EV_IDLE_ENABLE
1645void inline_size
1646idle_reify (EV_P)
1647{
1648 if (expect_false (idleall))
1649 {
1650 int pri;
1651
1652 for (pri = NUMPRI; pri--; )
1653 {
1654 if (pendingcnt [pri])
1655 break;
1656
1657 if (idlecnt [pri])
1658 {
1659 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1660 break;
1661 }
1662 }
1663 }
1664}
1665#endif
1095 1666
1096void inline_size 1667void inline_size
1097timers_reify (EV_P) 1668timers_reify (EV_P)
1098{ 1669{
1670 EV_FREQUENT_CHECK;
1671
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1100 { 1673 {
1101 ev_timer *w = timers [0]; 1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1102 1675
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1677
1105 /* first reschedule or stop timer */ 1678 /* first reschedule or stop timer */
1106 if (w->repeat) 1679 if (w->repeat)
1107 { 1680 {
1681 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now;
1684
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109 1686
1110 ((WT)w)->at += w->repeat; 1687 ANHE_at_cache (timers [HEAP0]);
1111 if (((WT)w)->at < mn_now)
1112 ((WT)w)->at = mn_now;
1113
1114 downheap ((WT *)timers, timercnt, 0); 1688 downheap (timers, timercnt, HEAP0);
1115 } 1689 }
1116 else 1690 else
1117 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118 1692
1693 EV_FREQUENT_CHECK;
1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1120 } 1695 }
1121} 1696}
1122 1697
1123#if EV_PERIODIC_ENABLE 1698#if EV_PERIODIC_ENABLE
1124void inline_size 1699void inline_size
1125periodics_reify (EV_P) 1700periodics_reify (EV_P)
1126{ 1701{
1702 EV_FREQUENT_CHECK;
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1128 { 1704 {
1129 ev_periodic *w = periodics [0]; 1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1130 1706
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1708
1133 /* first reschedule or stop timer */ 1709 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1710 if (w->reschedule_cb)
1135 { 1711 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713
1137 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715
1716 ANHE_at_cache (periodics [HEAP0]);
1138 downheap ((WT *)periodics, periodiccnt, 0); 1717 downheap (periodics, periodiccnt, HEAP0);
1718 EV_FREQUENT_CHECK;
1139 } 1719 }
1140 else if (w->interval) 1720 else if (w->interval)
1141 { 1721 {
1142 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1143 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1144 downheap ((WT *)periodics, periodiccnt, 0); 1737 downheap (periodics, periodiccnt, HEAP0);
1145 } 1738 }
1146 else 1739 else
1147 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148 1741
1742 EV_FREQUENT_CHECK;
1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1150 } 1744 }
1151} 1745}
1152 1746
1153static void noinline 1747static void noinline
1154periodics_reschedule (EV_P) 1748periodics_reschedule (EV_P)
1155{ 1749{
1156 int i; 1750 int i;
1157 1751
1158 /* adjust periodics after time jump */ 1752 /* adjust periodics after time jump */
1159 for (i = 0; i < periodiccnt; ++i) 1753 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1160 { 1754 {
1161 ev_periodic *w = periodics [i]; 1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1162 1756
1163 if (w->reschedule_cb) 1757 if (w->reschedule_cb)
1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1758 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1165 else if (w->interval) 1759 else if (w->interval)
1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1760 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1761
1762 ANHE_at_cache (periodics [i]);
1763 }
1764
1765 reheap (periodics, periodiccnt);
1766}
1767#endif
1768
1769void inline_speed
1770time_update (EV_P_ ev_tstamp max_block)
1771{
1772 int i;
1773
1774#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic))
1167 } 1776 {
1777 ev_tstamp odiff = rtmn_diff;
1168 1778
1169 /* now rebuild the heap */
1170 for (i = periodiccnt >> 1; i--; )
1171 downheap ((WT *)periodics, periodiccnt, i);
1172}
1173#endif
1174
1175int inline_size
1176time_update_monotonic (EV_P)
1177{
1178 mn_now = get_clock (); 1779 mn_now = get_clock ();
1179 1780
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1782 /* interpolate in the meantime */
1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1783 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181 { 1784 {
1182 ev_rt_now = rtmn_diff + mn_now; 1785 ev_rt_now = rtmn_diff + mn_now;
1183 return 0; 1786 return;
1184 } 1787 }
1185 else 1788
1186 {
1187 now_floor = mn_now; 1789 now_floor = mn_now;
1188 ev_rt_now = ev_time (); 1790 ev_rt_now = ev_time ();
1189 return 1;
1190 }
1191}
1192 1791
1193void inline_size 1792 /* loop a few times, before making important decisions.
1194time_update (EV_P) 1793 * on the choice of "4": one iteration isn't enough,
1195{ 1794 * in case we get preempted during the calls to
1196 int i; 1795 * ev_time and get_clock. a second call is almost guaranteed
1197 1796 * to succeed in that case, though. and looping a few more times
1198#if EV_USE_MONOTONIC 1797 * doesn't hurt either as we only do this on time-jumps or
1199 if (expect_true (have_monotonic)) 1798 * in the unlikely event of having been preempted here.
1200 { 1799 */
1201 if (time_update_monotonic (EV_A)) 1800 for (i = 4; --i; )
1202 { 1801 {
1203 ev_tstamp odiff = rtmn_diff;
1204
1205 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed
1209 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here.
1212 */
1213 for (i = 4; --i; )
1214 {
1215 rtmn_diff = ev_rt_now - mn_now; 1802 rtmn_diff = ev_rt_now - mn_now;
1216 1803
1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1804 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1218 return; /* all is well */ 1805 return; /* all is well */
1219 1806
1220 ev_rt_now = ev_time (); 1807 ev_rt_now = ev_time ();
1221 mn_now = get_clock (); 1808 mn_now = get_clock ();
1222 now_floor = mn_now; 1809 now_floor = mn_now;
1223 } 1810 }
1224 1811
1225# if EV_PERIODIC_ENABLE 1812# if EV_PERIODIC_ENABLE
1226 periodics_reschedule (EV_A); 1813 periodics_reschedule (EV_A);
1227# endif 1814# endif
1228 /* no timer adjustment, as the monotonic clock doesn't jump */ 1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230 }
1231 } 1817 }
1232 else 1818 else
1233#endif 1819#endif
1234 { 1820 {
1235 ev_rt_now = ev_time (); 1821 ev_rt_now = ev_time ();
1236 1822
1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238 { 1824 {
1239#if EV_PERIODIC_ENABLE 1825#if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1826 periodics_reschedule (EV_A);
1241#endif 1827#endif
1242
1243 /* adjust timers. this is easy, as the offset is the same for all */ 1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1244 for (i = 0; i < timercnt; ++i) 1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1245 ((WT)timers [i])->at += ev_rt_now - mn_now; 1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1246 } 1835 }
1247 1836
1248 mn_now = ev_rt_now; 1837 mn_now = ev_rt_now;
1249 } 1838 }
1250} 1839}
… …
1264static int loop_done; 1853static int loop_done;
1265 1854
1266void 1855void
1267ev_loop (EV_P_ int flags) 1856ev_loop (EV_P_ int flags)
1268{ 1857{
1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1858 loop_done = EVUNLOOP_CANCEL;
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
1272 1859
1273 while (activecnt) 1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1861
1862 do
1274 { 1863 {
1864#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid))
1867 {
1868 curpid = getpid ();
1869 postfork = 1;
1870 }
1871#endif
1872
1873#if EV_FORK_ENABLE
1874 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork))
1876 if (forkcnt)
1877 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A);
1880 }
1881#endif
1882
1275 /* queue check watchers (and execute them) */ 1883 /* queue prepare watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1884 if (expect_false (preparecnt))
1277 { 1885 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1887 call_pending (EV_A);
1280 } 1888 }
1281 1889
1890 if (expect_false (!activecnt))
1891 break;
1892
1282 /* we might have forked, so reify kernel state if necessary */ 1893 /* we might have forked, so reify kernel state if necessary */
1283 if (expect_false (postfork)) 1894 if (expect_false (postfork))
1284 loop_fork (EV_A); 1895 loop_fork (EV_A);
1285 1896
1286 /* update fd-related kernel structures */ 1897 /* update fd-related kernel structures */
1287 fd_reify (EV_A); 1898 fd_reify (EV_A);
1288 1899
1289 /* calculate blocking time */ 1900 /* calculate blocking time */
1290 { 1901 {
1291 double block; 1902 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.;
1292 1904
1293 if (flags & EVLOOP_NONBLOCK || idlecnt) 1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294 block = 0.; /* do not block at all */
1295 else
1296 { 1906 {
1297 /* update time to cancel out callback processing overhead */ 1907 /* update time to cancel out callback processing overhead */
1298#if EV_USE_MONOTONIC
1299 if (expect_true (have_monotonic))
1300 time_update_monotonic (EV_A); 1908 time_update (EV_A_ 1e100);
1301 else
1302#endif
1303 {
1304 ev_rt_now = ev_time ();
1305 mn_now = ev_rt_now;
1306 }
1307 1909
1308 block = MAX_BLOCKTIME; 1910 waittime = MAX_BLOCKTIME;
1309 1911
1310 if (timercnt) 1912 if (timercnt)
1311 { 1913 {
1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1914 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1313 if (block > to) block = to; 1915 if (waittime > to) waittime = to;
1314 } 1916 }
1315 1917
1316#if EV_PERIODIC_ENABLE 1918#if EV_PERIODIC_ENABLE
1317 if (periodiccnt) 1919 if (periodiccnt)
1318 { 1920 {
1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1320 if (block > to) block = to; 1922 if (waittime > to) waittime = to;
1321 } 1923 }
1322#endif 1924#endif
1323 1925
1324 if (expect_false (block < 0.)) block = 0.; 1926 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime;
1928
1929 sleeptime = waittime - backend_fudge;
1930
1931 if (expect_true (sleeptime > io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 {
1936 ev_sleep (sleeptime);
1937 waittime -= sleeptime;
1938 }
1325 } 1939 }
1326 1940
1941 ++loop_count;
1327 backend_poll (EV_A_ block); 1942 backend_poll (EV_A_ waittime);
1943
1944 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime);
1328 } 1946 }
1329
1330 /* update ev_rt_now, do magic */
1331 time_update (EV_A);
1332 1947
1333 /* queue pending timers and reschedule them */ 1948 /* queue pending timers and reschedule them */
1334 timers_reify (EV_A); /* relative timers called last */ 1949 timers_reify (EV_A); /* relative timers called last */
1335#if EV_PERIODIC_ENABLE 1950#if EV_PERIODIC_ENABLE
1336 periodics_reify (EV_A); /* absolute timers called first */ 1951 periodics_reify (EV_A); /* absolute timers called first */
1337#endif 1952#endif
1338 1953
1954#if EV_IDLE_ENABLE
1339 /* queue idle watchers unless other events are pending */ 1955 /* queue idle watchers unless other events are pending */
1340 if (idlecnt && !any_pending (EV_A)) 1956 idle_reify (EV_A);
1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1957#endif
1342 1958
1343 /* queue check watchers, to be executed first */ 1959 /* queue check watchers, to be executed first */
1344 if (expect_false (checkcnt)) 1960 if (expect_false (checkcnt))
1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346 1962
1347 call_pending (EV_A); 1963 call_pending (EV_A);
1348
1349 if (expect_false (loop_done))
1350 break;
1351 } 1964 }
1965 while (expect_true (
1966 activecnt
1967 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 ));
1352 1970
1353 if (loop_done == EVUNLOOP_ONE) 1971 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL; 1972 loop_done = EVUNLOOP_CANCEL;
1355} 1973}
1356 1974
… …
1383 head = &(*head)->next; 2001 head = &(*head)->next;
1384 } 2002 }
1385} 2003}
1386 2004
1387void inline_speed 2005void inline_speed
1388ev_clear_pending (EV_P_ W w) 2006clear_pending (EV_P_ W w)
1389{ 2007{
1390 if (w->pending) 2008 if (w->pending)
1391 { 2009 {
1392 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2010 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393 w->pending = 0; 2011 w->pending = 0;
1394 } 2012 }
1395} 2013}
1396 2014
2015int
2016ev_clear_pending (EV_P_ void *w)
2017{
2018 W w_ = (W)w;
2019 int pending = w_->pending;
2020
2021 if (expect_true (pending))
2022 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2024 w_->pending = 0;
2025 p->w = 0;
2026 return p->events;
2027 }
2028 else
2029 return 0;
2030}
2031
2032void inline_size
2033pri_adjust (EV_P_ W w)
2034{
2035 int pri = w->priority;
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri;
2039}
2040
1397void inline_speed 2041void inline_speed
1398ev_start (EV_P_ W w, int active) 2042ev_start (EV_P_ W w, int active)
1399{ 2043{
1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2044 pri_adjust (EV_A_ w);
1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403 w->active = active; 2045 w->active = active;
1404 ev_ref (EV_A); 2046 ev_ref (EV_A);
1405} 2047}
1406 2048
1407void inline_size 2049void inline_size
… …
1411 w->active = 0; 2053 w->active = 0;
1412} 2054}
1413 2055
1414/*****************************************************************************/ 2056/*****************************************************************************/
1415 2057
1416void 2058void noinline
1417ev_io_start (EV_P_ ev_io *w) 2059ev_io_start (EV_P_ ev_io *w)
1418{ 2060{
1419 int fd = w->fd; 2061 int fd = w->fd;
1420 2062
1421 if (expect_false (ev_is_active (w))) 2063 if (expect_false (ev_is_active (w)))
1422 return; 2064 return;
1423 2065
1424 assert (("ev_io_start called with negative fd", fd >= 0)); 2066 assert (("ev_io_start called with negative fd", fd >= 0));
1425 2067
2068 EV_FREQUENT_CHECK;
2069
1426 ev_start (EV_A_ (W)w, 1); 2070 ev_start (EV_A_ (W)w, 1);
1427 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2072 wlist_add (&anfds[fd].head, (WL)w);
1429 2073
1430 fd_change (EV_A_ fd); 2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1431} 2075 w->events &= ~EV_IOFDSET;
1432 2076
1433void 2077 EV_FREQUENT_CHECK;
2078}
2079
2080void noinline
1434ev_io_stop (EV_P_ ev_io *w) 2081ev_io_stop (EV_P_ ev_io *w)
1435{ 2082{
1436 ev_clear_pending (EV_A_ (W)w); 2083 clear_pending (EV_A_ (W)w);
1437 if (expect_false (!ev_is_active (w))) 2084 if (expect_false (!ev_is_active (w)))
1438 return; 2085 return;
1439 2086
1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441 2088
2089 EV_FREQUENT_CHECK;
2090
1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2091 wlist_del (&anfds[w->fd].head, (WL)w);
1443 ev_stop (EV_A_ (W)w); 2092 ev_stop (EV_A_ (W)w);
1444 2093
1445 fd_change (EV_A_ w->fd); 2094 fd_change (EV_A_ w->fd, 1);
1446}
1447 2095
1448void 2096 EV_FREQUENT_CHECK;
2097}
2098
2099void noinline
1449ev_timer_start (EV_P_ ev_timer *w) 2100ev_timer_start (EV_P_ ev_timer *w)
1450{ 2101{
1451 if (expect_false (ev_is_active (w))) 2102 if (expect_false (ev_is_active (w)))
1452 return; 2103 return;
1453 2104
1454 ((WT)w)->at += mn_now; 2105 ev_at (w) += mn_now;
1455 2106
1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457 2108
2109 EV_FREQUENT_CHECK;
2110
2111 ++timercnt;
1458 ev_start (EV_A_ (W)w, ++timercnt); 2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2113 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1460 timers [timercnt - 1] = w; 2114 ANHE_w (timers [ev_active (w)]) = (WT)w;
1461 upheap ((WT *)timers, timercnt - 1); 2115 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w));
1462 2117
2118 EV_FREQUENT_CHECK;
2119
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1464} 2121}
1465 2122
1466void 2123void noinline
1467ev_timer_stop (EV_P_ ev_timer *w) 2124ev_timer_stop (EV_P_ ev_timer *w)
1468{ 2125{
1469 ev_clear_pending (EV_A_ (W)w); 2126 clear_pending (EV_A_ (W)w);
1470 if (expect_false (!ev_is_active (w))) 2127 if (expect_false (!ev_is_active (w)))
1471 return; 2128 return;
1472 2129
2130 EV_FREQUENT_CHECK;
2131
2132 {
2133 int active = ev_active (w);
2134
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1474 2136
2137 --timercnt;
2138
1475 if (expect_true (((W)w)->active < timercnt--)) 2139 if (expect_true (active < timercnt + HEAP0))
1476 { 2140 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 2141 timers [active] = timers [timercnt + HEAP0];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2142 adjustheap (timers, timercnt, active);
1479 } 2143 }
2144 }
1480 2145
1481 ((WT)w)->at -= mn_now; 2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now;
1482 2149
1483 ev_stop (EV_A_ (W)w); 2150 ev_stop (EV_A_ (W)w);
1484} 2151}
1485 2152
1486void 2153void noinline
1487ev_timer_again (EV_P_ ev_timer *w) 2154ev_timer_again (EV_P_ ev_timer *w)
1488{ 2155{
2156 EV_FREQUENT_CHECK;
2157
1489 if (ev_is_active (w)) 2158 if (ev_is_active (w))
1490 { 2159 {
1491 if (w->repeat) 2160 if (w->repeat)
1492 { 2161 {
1493 ((WT)w)->at = mn_now + w->repeat; 2162 ev_at (w) = mn_now + w->repeat;
2163 ANHE_at_cache (timers [ev_active (w)]);
1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2164 adjustheap (timers, timercnt, ev_active (w));
1495 } 2165 }
1496 else 2166 else
1497 ev_timer_stop (EV_A_ w); 2167 ev_timer_stop (EV_A_ w);
1498 } 2168 }
1499 else if (w->repeat) 2169 else if (w->repeat)
1500 { 2170 {
1501 w->at = w->repeat; 2171 ev_at (w) = w->repeat;
1502 ev_timer_start (EV_A_ w); 2172 ev_timer_start (EV_A_ w);
1503 } 2173 }
2174
2175 EV_FREQUENT_CHECK;
1504} 2176}
1505 2177
1506#if EV_PERIODIC_ENABLE 2178#if EV_PERIODIC_ENABLE
1507void 2179void noinline
1508ev_periodic_start (EV_P_ ev_periodic *w) 2180ev_periodic_start (EV_P_ ev_periodic *w)
1509{ 2181{
1510 if (expect_false (ev_is_active (w))) 2182 if (expect_false (ev_is_active (w)))
1511 return; 2183 return;
1512 2184
1513 if (w->reschedule_cb) 2185 if (w->reschedule_cb)
1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1515 else if (w->interval) 2187 else if (w->interval)
1516 { 2188 {
1517 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518 /* this formula differs from the one in periodic_reify because we do not always round up */ 2190 /* this formula differs from the one in periodic_reify because we do not always round up */
1519 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520 } 2192 }
2193 else
2194 ev_at (w) = w->offset;
1521 2195
2196 EV_FREQUENT_CHECK;
2197
2198 ++periodiccnt;
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 2199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 2201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 2202 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w));
1526 2204
2205 EV_FREQUENT_CHECK;
2206
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1528} 2208}
1529 2209
1530void 2210void noinline
1531ev_periodic_stop (EV_P_ ev_periodic *w) 2211ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 2212{
1533 ev_clear_pending (EV_A_ (W)w); 2213 clear_pending (EV_A_ (W)w);
1534 if (expect_false (!ev_is_active (w))) 2214 if (expect_false (!ev_is_active (w)))
1535 return; 2215 return;
1536 2216
2217 EV_FREQUENT_CHECK;
2218
2219 {
2220 int active = ev_active (w);
2221
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1538 2223
2224 --periodiccnt;
2225
1539 if (expect_true (((W)w)->active < periodiccnt--)) 2226 if (expect_true (active < periodiccnt + HEAP0))
1540 { 2227 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2228 periodics [active] = periodics [periodiccnt + HEAP0];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2229 adjustheap (periodics, periodiccnt, active);
1543 } 2230 }
2231 }
2232
2233 EV_FREQUENT_CHECK;
1544 2234
1545 ev_stop (EV_A_ (W)w); 2235 ev_stop (EV_A_ (W)w);
1546} 2236}
1547 2237
1548void 2238void noinline
1549ev_periodic_again (EV_P_ ev_periodic *w) 2239ev_periodic_again (EV_P_ ev_periodic *w)
1550{ 2240{
1551 /* TODO: use adjustheap and recalculation */ 2241 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 2242 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 2243 ev_periodic_start (EV_A_ w);
1554} 2244}
1555#endif 2245#endif
1556 2246
1557void 2247#ifndef SA_RESTART
2248# define SA_RESTART 0
2249#endif
2250
2251void noinline
1558ev_idle_start (EV_P_ ev_idle *w) 2252ev_signal_start (EV_P_ ev_signal *w)
1559{ 2253{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
1560 if (expect_false (ev_is_active (w))) 2257 if (expect_false (ev_is_active (w)))
1561 return; 2258 return;
1562 2259
1563 ev_start (EV_A_ (W)w, ++idlecnt); 2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565 idles [idlecnt - 1] = w;
1566}
1567 2261
1568void 2262 evpipe_init (EV_A);
1569ev_idle_stop (EV_P_ ev_idle *w) 2263
1570{ 2264 EV_FREQUENT_CHECK;
1571 ev_clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w)))
1573 return;
1574 2265
1575 { 2266 {
1576 int active = ((W)w)->active; 2267#ifndef _WIN32
1577 idles [active - 1] = idles [--idlecnt]; 2268 sigset_t full, prev;
1578 ((W)idles [active - 1])->active = active; 2269 sigfillset (&full);
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2274
2275#ifndef _WIN32
2276 sigprocmask (SIG_SETMASK, &prev, 0);
2277#endif
1579 } 2278 }
1580 2279
1581 ev_stop (EV_A_ (W)w);
1582}
1583
1584void
1585ev_prepare_start (EV_P_ ev_prepare *w)
1586{
1587 if (expect_false (ev_is_active (w)))
1588 return;
1589
1590 ev_start (EV_A_ (W)w, ++preparecnt);
1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592 prepares [preparecnt - 1] = w;
1593}
1594
1595void
1596ev_prepare_stop (EV_P_ ev_prepare *w)
1597{
1598 ev_clear_pending (EV_A_ (W)w);
1599 if (expect_false (!ev_is_active (w)))
1600 return;
1601
1602 {
1603 int active = ((W)w)->active;
1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1608 ev_stop (EV_A_ (W)w);
1609}
1610
1611void
1612ev_check_start (EV_P_ ev_check *w)
1613{
1614 if (expect_false (ev_is_active (w)))
1615 return;
1616
1617 ev_start (EV_A_ (W)w, ++checkcnt);
1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619 checks [checkcnt - 1] = w;
1620}
1621
1622void
1623ev_check_stop (EV_P_ ev_check *w)
1624{
1625 ev_clear_pending (EV_A_ (W)w);
1626 if (expect_false (!ev_is_active (w)))
1627 return;
1628
1629 {
1630 int active = ((W)w)->active;
1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1635 ev_stop (EV_A_ (W)w);
1636}
1637
1638#ifndef SA_RESTART
1639# define SA_RESTART 0
1640#endif
1641
1642void
1643ev_signal_start (EV_P_ ev_signal *w)
1644{
1645#if EV_MULTIPLICITY
1646 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647#endif
1648 if (expect_false (ev_is_active (w)))
1649 return;
1650
1651 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652
1653 ev_start (EV_A_ (W)w, 1); 2280 ev_start (EV_A_ (W)w, 1);
1654 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2281 wlist_add (&signals [w->signum - 1].head, (WL)w);
1656 2282
1657 if (!((WL)w)->next) 2283 if (!((WL)w)->next)
1658 { 2284 {
1659#if _WIN32 2285#if _WIN32
1660 signal (w->signum, sighandler); 2286 signal (w->signum, ev_sighandler);
1661#else 2287#else
1662 struct sigaction sa; 2288 struct sigaction sa;
1663 sa.sa_handler = sighandler; 2289 sa.sa_handler = ev_sighandler;
1664 sigfillset (&sa.sa_mask); 2290 sigfillset (&sa.sa_mask);
1665 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1666 sigaction (w->signum, &sa, 0); 2292 sigaction (w->signum, &sa, 0);
1667#endif 2293#endif
1668 } 2294 }
1669}
1670 2295
1671void 2296 EV_FREQUENT_CHECK;
2297}
2298
2299void noinline
1672ev_signal_stop (EV_P_ ev_signal *w) 2300ev_signal_stop (EV_P_ ev_signal *w)
1673{ 2301{
1674 ev_clear_pending (EV_A_ (W)w); 2302 clear_pending (EV_A_ (W)w);
1675 if (expect_false (!ev_is_active (w))) 2303 if (expect_false (!ev_is_active (w)))
1676 return; 2304 return;
1677 2305
2306 EV_FREQUENT_CHECK;
2307
1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2308 wlist_del (&signals [w->signum - 1].head, (WL)w);
1679 ev_stop (EV_A_ (W)w); 2309 ev_stop (EV_A_ (W)w);
1680 2310
1681 if (!signals [w->signum - 1].head) 2311 if (!signals [w->signum - 1].head)
1682 signal (w->signum, SIG_DFL); 2312 signal (w->signum, SIG_DFL);
2313
2314 EV_FREQUENT_CHECK;
1683} 2315}
1684 2316
1685void 2317void
1686ev_child_start (EV_P_ ev_child *w) 2318ev_child_start (EV_P_ ev_child *w)
1687{ 2319{
… …
1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1690#endif 2322#endif
1691 if (expect_false (ev_is_active (w))) 2323 if (expect_false (ev_is_active (w)))
1692 return; 2324 return;
1693 2325
2326 EV_FREQUENT_CHECK;
2327
1694 ev_start (EV_A_ (W)w, 1); 2328 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2330
2331 EV_FREQUENT_CHECK;
1696} 2332}
1697 2333
1698void 2334void
1699ev_child_stop (EV_P_ ev_child *w) 2335ev_child_stop (EV_P_ ev_child *w)
1700{ 2336{
1701 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
1703 return; 2339 return;
1704 2340
2341 EV_FREQUENT_CHECK;
2342
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1706 ev_stop (EV_A_ (W)w); 2344 ev_stop (EV_A_ (W)w);
1707}
1708 2345
2346 EV_FREQUENT_CHECK;
2347}
2348
1709#if EV_EMBED_ENABLE 2349#if EV_STAT_ENABLE
2350
2351# ifdef _WIN32
2352# undef lstat
2353# define lstat(a,b) _stati64 (a,b)
2354# endif
2355
2356#define DEF_STAT_INTERVAL 5.0074891
2357#define MIN_STAT_INTERVAL 0.1074891
2358
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360
2361#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192
2363
1710void noinline 2364static void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w) 2365infy_add (EV_P_ ev_stat *w)
1712{ 2366{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK); 2367 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);
2368
2369 if (w->wd < 0)
2370 {
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372
2373 /* monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */
2375 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 {
2378 char path [4096];
2379 strcpy (path, w->path);
2380
2381 do
2382 {
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385
2386 char *pend = strrchr (path, '/');
2387
2388 if (!pend)
2389 break; /* whoops, no '/', complain to your admin */
2390
2391 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 }
2396 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399
2400 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2402}
2403
2404static void noinline
2405infy_del (EV_P_ ev_stat *w)
2406{
2407 int slot;
2408 int wd = w->wd;
2409
2410 if (wd < 0)
2411 return;
2412
2413 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w);
2416
2417 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd);
2419}
2420
2421static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{
2424 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev);
2428 else
2429 {
2430 WL w_;
2431
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2433 {
2434 ev_stat *w = (ev_stat *)w_;
2435 w_ = w_->next; /* lets us remove this watcher and all before it */
2436
2437 if (w->wd == wd || wd == -1)
2438 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 {
2441 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */
2443 }
2444
2445 stat_timer_cb (EV_A_ &w->timer, 0);
2446 }
2447 }
2448 }
1714} 2449}
1715 2450
1716static void 2451static void
1717embed_cb (EV_P_ ev_io *io, int revents) 2452infy_cb (EV_P_ ev_io *w, int revents)
1718{ 2453{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2454 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf));
1720 2458
1721 if (ev_cb (w)) 2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2460 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1723 else
1724 ev_embed_sweep (loop, w);
1725} 2461}
1726 2462
1727void 2463void inline_size
1728ev_embed_start (EV_P_ ev_embed *w) 2464infy_init (EV_P)
1729{ 2465{
1730 if (expect_false (ev_is_active (w))) 2466 if (fs_fd != -2)
1731 return; 2467 return;
1732 2468
2469 fs_fd = inotify_init ();
2470
2471 if (fs_fd >= 0)
1733 { 2472 {
1734 struct ev_loop *loop = w->loop; 2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2474 ev_set_priority (&fs_w, EV_MAXPRI);
1736 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1737 }
1738
1739 ev_set_priority (&w->io, ev_priority (w));
1740 ev_io_start (EV_A_ &w->io); 2475 ev_io_start (EV_A_ &fs_w);
1741 2476 }
1742 ev_start (EV_A_ (W)w, 1);
1743} 2477}
1744 2478
1745void 2479void inline_size
1746ev_embed_stop (EV_P_ ev_embed *w) 2480infy_fork (EV_P)
1747{ 2481{
1748 ev_clear_pending (EV_A_ (W)w); 2482 int slot;
1749 if (expect_false (!ev_is_active (w))) 2483
2484 if (fs_fd < 0)
1750 return; 2485 return;
1751 2486
1752 ev_io_stop (EV_A_ &w->io); 2487 close (fs_fd);
2488 fs_fd = inotify_init ();
1753 2489
1754 ev_stop (EV_A_ (W)w); 2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1755} 2491 {
1756#endif 2492 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0;
1757 2494
1758#if EV_STAT_ENABLE 2495 while (w_)
2496 {
2497 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us add this watcher */
1759 2499
1760# ifdef _WIN32 2500 w->wd = -1;
1761# define lstat(a,b) stat(a,b) 2501
2502 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else
2505 ev_timer_start (EV_A_ &w->timer);
2506 }
2507
2508 }
2509}
2510
1762# endif 2511#endif
1763 2512
1764void 2513void
1765ev_stat_stat (EV_P_ ev_stat *w) 2514ev_stat_stat (EV_P_ ev_stat *w)
1766{ 2515{
1767 if (lstat (w->path, &w->attr) < 0) 2516 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0; 2517 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink) 2518 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1; 2519 w->attr.st_nlink = 1;
1771} 2520}
1772 2521
1773static void 2522static void noinline
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2523stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{ 2524{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777 2526
1778 /* we copy this here each the time so that */ 2527 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */ 2528 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr; 2529 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w); 2530 ev_stat_stat (EV_A_ w);
1782 2531
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if (
2534 w->prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime
2545 ) {
2546 #if EV_USE_INOTIFY
2547 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */
2550 #endif
2551
1784 ev_feed_event (EV_A_ w, EV_STAT); 2552 ev_feed_event (EV_A_ w, EV_STAT);
2553 }
1785} 2554}
1786 2555
1787void 2556void
1788ev_stat_start (EV_P_ ev_stat *w) 2557ev_stat_start (EV_P_ ev_stat *w)
1789{ 2558{
… …
1794 memset (&w->prev, 0, sizeof (ev_statdata)); 2563 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata)); 2564 memset (&w->attr, 0, sizeof (ev_statdata));
1796 2565
1797 ev_stat_stat (EV_A_ w); 2566 ev_stat_stat (EV_A_ w);
1798 2567
2568 if (w->interval < MIN_STAT_INTERVAL)
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w)); 2572 ev_set_priority (&w->timer, ev_priority (w));
2573
2574#if EV_USE_INOTIFY
2575 infy_init (EV_A);
2576
2577 if (fs_fd >= 0)
2578 infy_add (EV_A_ w);
2579 else
2580#endif
1801 ev_timer_start (EV_A_ &w->timer); 2581 ev_timer_start (EV_A_ &w->timer);
1802 2582
1803 ev_start (EV_A_ (W)w, 1); 2583 ev_start (EV_A_ (W)w, 1);
2584
2585 EV_FREQUENT_CHECK;
1804} 2586}
1805 2587
1806void 2588void
1807ev_stat_stop (EV_P_ ev_stat *w) 2589ev_stat_stop (EV_P_ ev_stat *w)
1808{ 2590{
1809 ev_clear_pending (EV_A_ (W)w); 2591 clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2592 if (expect_false (!ev_is_active (w)))
1811 return; 2593 return;
1812 2594
2595 EV_FREQUENT_CHECK;
2596
2597#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w);
2599#endif
1813 ev_timer_stop (EV_A_ &w->timer); 2600 ev_timer_stop (EV_A_ &w->timer);
1814 2601
1815 ev_stop (EV_A_ (W)w); 2602 ev_stop (EV_A_ (W)w);
2603
2604 EV_FREQUENT_CHECK;
2605}
2606#endif
2607
2608#if EV_IDLE_ENABLE
2609void
2610ev_idle_start (EV_P_ ev_idle *w)
2611{
2612 if (expect_false (ev_is_active (w)))
2613 return;
2614
2615 pri_adjust (EV_A_ (W)w);
2616
2617 EV_FREQUENT_CHECK;
2618
2619 {
2620 int active = ++idlecnt [ABSPRI (w)];
2621
2622 ++idleall;
2623 ev_start (EV_A_ (W)w, active);
2624
2625 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2626 idles [ABSPRI (w)][active - 1] = w;
2627 }
2628
2629 EV_FREQUENT_CHECK;
2630}
2631
2632void
2633ev_idle_stop (EV_P_ ev_idle *w)
2634{
2635 clear_pending (EV_A_ (W)w);
2636 if (expect_false (!ev_is_active (w)))
2637 return;
2638
2639 EV_FREQUENT_CHECK;
2640
2641 {
2642 int active = ev_active (w);
2643
2644 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2645 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2646
2647 ev_stop (EV_A_ (W)w);
2648 --idleall;
2649 }
2650
2651 EV_FREQUENT_CHECK;
2652}
2653#endif
2654
2655void
2656ev_prepare_start (EV_P_ ev_prepare *w)
2657{
2658 if (expect_false (ev_is_active (w)))
2659 return;
2660
2661 EV_FREQUENT_CHECK;
2662
2663 ev_start (EV_A_ (W)w, ++preparecnt);
2664 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2665 prepares [preparecnt - 1] = w;
2666
2667 EV_FREQUENT_CHECK;
2668}
2669
2670void
2671ev_prepare_stop (EV_P_ ev_prepare *w)
2672{
2673 clear_pending (EV_A_ (W)w);
2674 if (expect_false (!ev_is_active (w)))
2675 return;
2676
2677 EV_FREQUENT_CHECK;
2678
2679 {
2680 int active = ev_active (w);
2681
2682 prepares [active - 1] = prepares [--preparecnt];
2683 ev_active (prepares [active - 1]) = active;
2684 }
2685
2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2689}
2690
2691void
2692ev_check_start (EV_P_ ev_check *w)
2693{
2694 if (expect_false (ev_is_active (w)))
2695 return;
2696
2697 EV_FREQUENT_CHECK;
2698
2699 ev_start (EV_A_ (W)w, ++checkcnt);
2700 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2701 checks [checkcnt - 1] = w;
2702
2703 EV_FREQUENT_CHECK;
2704}
2705
2706void
2707ev_check_stop (EV_P_ ev_check *w)
2708{
2709 clear_pending (EV_A_ (W)w);
2710 if (expect_false (!ev_is_active (w)))
2711 return;
2712
2713 EV_FREQUENT_CHECK;
2714
2715 {
2716 int active = ev_active (w);
2717
2718 checks [active - 1] = checks [--checkcnt];
2719 ev_active (checks [active - 1]) = active;
2720 }
2721
2722 ev_stop (EV_A_ (W)w);
2723
2724 EV_FREQUENT_CHECK;
2725}
2726
2727#if EV_EMBED_ENABLE
2728void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w)
2730{
2731 ev_loop (w->other, EVLOOP_NONBLOCK);
2732}
2733
2734static void
2735embed_io_cb (EV_P_ ev_io *io, int revents)
2736{
2737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738
2739 if (ev_cb (w))
2740 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741 else
2742 ev_loop (w->other, EVLOOP_NONBLOCK);
2743}
2744
2745static void
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749
2750 {
2751 struct ev_loop *loop = w->other;
2752
2753 while (fdchangecnt)
2754 {
2755 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 }
2758 }
2759}
2760
2761#if 0
2762static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{
2765 ev_idle_stop (EV_A_ idle);
2766}
2767#endif
2768
2769void
2770ev_embed_start (EV_P_ ev_embed *w)
2771{
2772 if (expect_false (ev_is_active (w)))
2773 return;
2774
2775 {
2776 struct ev_loop *loop = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 }
2780
2781 EV_FREQUENT_CHECK;
2782
2783 ev_set_priority (&w->io, ev_priority (w));
2784 ev_io_start (EV_A_ &w->io);
2785
2786 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare);
2789
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791
2792 ev_start (EV_A_ (W)w, 1);
2793
2794 EV_FREQUENT_CHECK;
2795}
2796
2797void
2798ev_embed_stop (EV_P_ ev_embed *w)
2799{
2800 clear_pending (EV_A_ (W)w);
2801 if (expect_false (!ev_is_active (w)))
2802 return;
2803
2804 EV_FREQUENT_CHECK;
2805
2806 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare);
2808
2809 ev_stop (EV_A_ (W)w);
2810
2811 EV_FREQUENT_CHECK;
2812}
2813#endif
2814
2815#if EV_FORK_ENABLE
2816void
2817ev_fork_start (EV_P_ ev_fork *w)
2818{
2819 if (expect_false (ev_is_active (w)))
2820 return;
2821
2822 EV_FREQUENT_CHECK;
2823
2824 ev_start (EV_A_ (W)w, ++forkcnt);
2825 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2826 forks [forkcnt - 1] = w;
2827
2828 EV_FREQUENT_CHECK;
2829}
2830
2831void
2832ev_fork_stop (EV_P_ ev_fork *w)
2833{
2834 clear_pending (EV_A_ (W)w);
2835 if (expect_false (!ev_is_active (w)))
2836 return;
2837
2838 EV_FREQUENT_CHECK;
2839
2840 {
2841 int active = ev_active (w);
2842
2843 forks [active - 1] = forks [--forkcnt];
2844 ev_active (forks [active - 1]) = active;
2845 }
2846
2847 ev_stop (EV_A_ (W)w);
2848
2849 EV_FREQUENT_CHECK;
2850}
2851#endif
2852
2853#if EV_ASYNC_ENABLE
2854void
2855ev_async_start (EV_P_ ev_async *w)
2856{
2857 if (expect_false (ev_is_active (w)))
2858 return;
2859
2860 evpipe_init (EV_A);
2861
2862 EV_FREQUENT_CHECK;
2863
2864 ev_start (EV_A_ (W)w, ++asynccnt);
2865 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2866 asyncs [asynccnt - 1] = w;
2867
2868 EV_FREQUENT_CHECK;
2869}
2870
2871void
2872ev_async_stop (EV_P_ ev_async *w)
2873{
2874 clear_pending (EV_A_ (W)w);
2875 if (expect_false (!ev_is_active (w)))
2876 return;
2877
2878 EV_FREQUENT_CHECK;
2879
2880 {
2881 int active = ev_active (w);
2882
2883 asyncs [active - 1] = asyncs [--asynccnt];
2884 ev_active (asyncs [active - 1]) = active;
2885 }
2886
2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2890}
2891
2892void
2893ev_async_send (EV_P_ ev_async *w)
2894{
2895 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync);
1816} 2897}
1817#endif 2898#endif
1818 2899
1819/*****************************************************************************/ 2900/*****************************************************************************/
1820 2901
… …
1878 ev_timer_set (&once->to, timeout, 0.); 2959 ev_timer_set (&once->to, timeout, 0.);
1879 ev_timer_start (EV_A_ &once->to); 2960 ev_timer_start (EV_A_ &once->to);
1880 } 2961 }
1881} 2962}
1882 2963
2964#if EV_MULTIPLICITY
2965 #include "ev_wrap.h"
2966#endif
2967
1883#ifdef __cplusplus 2968#ifdef __cplusplus
1884} 2969}
1885#endif 2970#endif
1886 2971

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