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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 1.254 by root, Wed Jun 4 20:26:55 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
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1
171# else
130# define EV_USE_MONOTONIC 0 172# define EV_USE_MONOTONIC 0
173# endif
131#endif 174#endif
132 175
133#ifndef EV_USE_REALTIME 176#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 177# define EV_USE_REALTIME 0
178#endif
179
180#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1
183# else
184# define EV_USE_NANOSLEEP 0
185# endif
135#endif 186#endif
136 187
137#ifndef EV_USE_SELECT 188#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 189# define EV_USE_SELECT 1
139#endif 190#endif
… …
145# define EV_USE_POLL 1 196# define EV_USE_POLL 1
146# endif 197# endif
147#endif 198#endif
148 199
149#ifndef EV_USE_EPOLL 200#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1
203# else
150# define EV_USE_EPOLL 0 204# define EV_USE_EPOLL 0
205# endif
151#endif 206#endif
152 207
153#ifndef EV_USE_KQUEUE 208#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 209# define EV_USE_KQUEUE 0
155#endif 210#endif
156 211
157#ifndef EV_USE_PORT 212#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 213# define EV_USE_PORT 0
159#endif 214#endif
160 215
161/**/ 216#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1
219# else
220# define EV_USE_INOTIFY 0
221# endif
222#endif
223
224#ifndef EV_PID_HASHSIZE
225# if EV_MINIMAL
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif
239
240#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1
243# else
244# define EV_USE_EVENTFD 0
245# endif
246#endif
247
248#if 0 /* debugging */
249# define EV_VERIFY 3
250# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1
252#endif
253
254#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL
256#endif
257
258#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL
260#endif
261
262#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL
264#endif
265
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 267
163#ifndef CLOCK_MONOTONIC 268#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 269# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 270# define EV_USE_MONOTONIC 0
166#endif 271#endif
… …
168#ifndef CLOCK_REALTIME 273#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 274# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 275# define EV_USE_REALTIME 0
171#endif 276#endif
172 277
278#if !EV_STAT_ENABLE
279# undef EV_USE_INOTIFY
280# define EV_USE_INOTIFY 0
281#endif
282
283#if !EV_USE_NANOSLEEP
284# ifndef _WIN32
285# include <sys/select.h>
286# endif
287#endif
288
289#if EV_USE_INOTIFY
290# include <sys/inotify.h>
291#endif
292
173#if EV_SELECT_IS_WINSOCKET 293#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 294# include <winsock.h>
175#endif 295#endif
176 296
297#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h>
300# ifdef __cplusplus
301extern "C" {
302# endif
303int eventfd (unsigned int initval, int flags);
304# ifdef __cplusplus
305}
306# endif
307#endif
308
177/**/ 309/**/
310
311#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
313#else
314# define EV_FREQUENT_CHECK do { } while (0)
315#endif
316
317/*
318 * This is used to avoid floating point rounding problems.
319 * It is added to ev_rt_now when scheduling periodics
320 * to ensure progress, time-wise, even when rounding
321 * errors are against us.
322 * This value is good at least till the year 4000.
323 * Better solutions welcome.
324 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 326
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 327#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) */ 328#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 */ 329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 330
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 331#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 332# 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)) 333# 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 334#else
201# define expect(expr,value) (expr) 335# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 336# define noinline
337# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
338# define inline
339# endif
205#endif 340#endif
206 341
207#define expect_false(expr) expect ((expr) != 0, 0) 342#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 343#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline
345
346#if EV_MINIMAL
347# define inline_speed static noinline
348#else
349# define inline_speed static inline
350#endif
209 351
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 354
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 355#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 356#define EMPTY2(a,b) /* used to suppress some warnings */
215 357
216typedef ev_watcher *W; 358typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 359typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 360typedef ev_watcher_time *WT;
219 361
362#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at
364
365#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369#endif
221 370
222#ifdef _WIN32 371#ifdef _WIN32
223# include "ev_win32.c" 372# include "ev_win32.c"
224#endif 373#endif
225 374
226/*****************************************************************************/ 375/*****************************************************************************/
227 376
228static void (*syserr_cb)(const char *msg); 377static void (*syserr_cb)(const char *msg);
229 378
379void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 380ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 381{
232 syserr_cb = cb; 382 syserr_cb = cb;
233} 383}
234 384
235static void 385static void noinline
236syserr (const char *msg) 386syserr (const char *msg)
237{ 387{
238 if (!msg) 388 if (!msg)
239 msg = "(libev) system error"; 389 msg = "(libev) system error";
240 390
… …
245 perror (msg); 395 perror (msg);
246 abort (); 396 abort ();
247 } 397 }
248} 398}
249 399
400static void *
401ev_realloc_emul (void *ptr, long size)
402{
403 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and
405 * the single unix specification, so work around them here.
406 */
407
408 if (size)
409 return realloc (ptr, size);
410
411 free (ptr);
412 return 0;
413}
414
250static void *(*alloc)(void *ptr, long size); 415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251 416
417void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 418ev_set_allocator (void *(*cb)(void *ptr, long size))
253{ 419{
254 alloc = cb; 420 alloc = cb;
255} 421}
256 422
257static void * 423inline_speed void *
258ev_realloc (void *ptr, long size) 424ev_realloc (void *ptr, long size)
259{ 425{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 426 ptr = alloc (ptr, size);
261 427
262 if (!ptr && size) 428 if (!ptr && size)
263 { 429 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265 abort (); 431 abort ();
… …
286typedef struct 452typedef struct
287{ 453{
288 W w; 454 W w;
289 int events; 455 int events;
290} ANPENDING; 456} ANPENDING;
457
458#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */
460typedef struct
461{
462 WL head;
463} ANFS;
464#endif
465
466/* Heap Entry */
467#if EV_HEAP_CACHE_AT
468 typedef struct {
469 ev_tstamp at;
470 WT w;
471 } ANHE;
472
473 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else
477 typedef WT ANHE;
478
479 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he)
482#endif
291 483
292#if EV_MULTIPLICITY 484#if EV_MULTIPLICITY
293 485
294 struct ev_loop 486 struct ev_loop
295 { 487 {
… …
315 507
316#endif 508#endif
317 509
318/*****************************************************************************/ 510/*****************************************************************************/
319 511
320ev_tstamp noinline 512ev_tstamp
321ev_time (void) 513ev_time (void)
322{ 514{
323#if EV_USE_REALTIME 515#if EV_USE_REALTIME
324 struct timespec ts; 516 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 517 clock_gettime (CLOCK_REALTIME, &ts);
… …
352{ 544{
353 return ev_rt_now; 545 return ev_rt_now;
354} 546}
355#endif 547#endif
356 548
357#define array_roundsize(type,n) (((n) | 4) & ~3) 549void
550ev_sleep (ev_tstamp delay)
551{
552 if (delay > 0.)
553 {
554#if EV_USE_NANOSLEEP
555 struct timespec ts;
556
557 ts.tv_sec = (time_t)delay;
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0);
561#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3));
563#else
564 struct timeval tv;
565
566 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568
569 select (0, 0, 0, 0, &tv);
570#endif
571 }
572}
573
574/*****************************************************************************/
575
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577
578int inline_size
579array_nextsize (int elem, int cur, int cnt)
580{
581 int ncur = cur + 1;
582
583 do
584 ncur <<= 1;
585 while (cnt > ncur);
586
587 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
588 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
589 {
590 ncur *= elem;
591 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
592 ncur = ncur - sizeof (void *) * 4;
593 ncur /= elem;
594 }
595
596 return ncur;
597}
598
599static noinline void *
600array_realloc (int elem, void *base, int *cur, int cnt)
601{
602 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur);
604}
358 605
359#define array_needsize(type,base,cur,cnt,init) \ 606#define array_needsize(type,base,cur,cnt,init) \
360 if (expect_false ((cnt) > cur)) \ 607 if (expect_false ((cnt) > (cur))) \
361 { \ 608 { \
362 int newcnt = cur; \ 609 int ocur_ = (cur); \
363 do \ 610 (base) = (type *)array_realloc \
364 { \ 611 (sizeof (type), (base), &(cur), (cnt)); \
365 newcnt = array_roundsize (type, newcnt << 1); \ 612 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 } 613 }
373 614
615#if 0
374#define array_slim(type,stem) \ 616#define array_slim(type,stem) \
375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 617 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376 { \ 618 { \
377 stem ## max = array_roundsize (stem ## cnt >> 1); \ 619 stem ## max = array_roundsize (stem ## cnt >> 1); \
378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 620 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380 } 622 }
623#endif
381 624
382#define array_free(stem, idx) \ 625#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
627
628/*****************************************************************************/
629
630void noinline
631ev_feed_event (EV_P_ void *w, int revents)
632{
633 W w_ = (W)w;
634 int pri = ABSPRI (w_);
635
636 if (expect_false (w_->pending))
637 pendings [pri][w_->pending - 1].events |= revents;
638 else
639 {
640 w_->pending = ++pendingcnt [pri];
641 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
642 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents;
644 }
645}
646
647void inline_speed
648queue_events (EV_P_ W *events, int eventcnt, int type)
649{
650 int i;
651
652 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type);
654}
384 655
385/*****************************************************************************/ 656/*****************************************************************************/
386 657
387void inline_size 658void inline_size
388anfds_init (ANFD *base, int count) 659anfds_init (ANFD *base, int count)
… …
395 666
396 ++base; 667 ++base;
397 } 668 }
398} 669}
399 670
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 671void inline_speed
427fd_event (EV_P_ int fd, int revents) 672fd_event (EV_P_ int fd, int revents)
428{ 673{
429 ANFD *anfd = anfds + fd; 674 ANFD *anfd = anfds + fd;
430 ev_io *w; 675 ev_io *w;
… …
439} 684}
440 685
441void 686void
442ev_feed_fd_event (EV_P_ int fd, int revents) 687ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 688{
689 if (fd >= 0 && fd < anfdmax)
444 fd_event (EV_A_ fd, revents); 690 fd_event (EV_A_ fd, revents);
445} 691}
446
447/*****************************************************************************/
448 692
449void inline_size 693void inline_size
450fd_reify (EV_P) 694fd_reify (EV_P)
451{ 695{
452 int i; 696 int i;
… …
455 { 699 {
456 int fd = fdchanges [i]; 700 int fd = fdchanges [i];
457 ANFD *anfd = anfds + fd; 701 ANFD *anfd = anfds + fd;
458 ev_io *w; 702 ev_io *w;
459 703
460 int events = 0; 704 unsigned char events = 0;
461 705
462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 706 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463 events |= w->events; 707 events |= (unsigned char)w->events;
464 708
465#if EV_SELECT_IS_WINSOCKET 709#if EV_SELECT_IS_WINSOCKET
466 if (events) 710 if (events)
467 { 711 {
468 unsigned long argp; 712 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
469 anfd->handle = _get_osfhandle (fd); 716 anfd->handle = _get_osfhandle (fd);
717 #endif
470 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
471 } 719 }
472#endif 720#endif
473 721
722 {
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
474 anfd->reify = 0; 726 anfd->reify = 0;
475
476 backend_modify (EV_A_ fd, anfd->events, events);
477 anfd->events = events; 727 anfd->events = events;
728
729 if (o_events != events || o_reify & EV_IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events);
731 }
478 } 732 }
479 733
480 fdchangecnt = 0; 734 fdchangecnt = 0;
481} 735}
482 736
483void inline_size 737void inline_size
484fd_change (EV_P_ int fd) 738fd_change (EV_P_ int fd, int flags)
485{ 739{
486 if (expect_false (anfds [fd].reify)) 740 unsigned char reify = anfds [fd].reify;
487 return;
488
489 anfds [fd].reify = 1; 741 anfds [fd].reify |= flags;
490 742
743 if (expect_true (!reify))
744 {
491 ++fdchangecnt; 745 ++fdchangecnt;
492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493 fdchanges [fdchangecnt - 1] = fd; 747 fdchanges [fdchangecnt - 1] = fd;
748 }
494} 749}
495 750
496void inline_speed 751void inline_speed
497fd_kill (EV_P_ int fd) 752fd_kill (EV_P_ int fd)
498{ 753{
… …
521{ 776{
522 int fd; 777 int fd;
523 778
524 for (fd = 0; fd < anfdmax; ++fd) 779 for (fd = 0; fd < anfdmax; ++fd)
525 if (anfds [fd].events) 780 if (anfds [fd].events)
526 if (!fd_valid (fd) == -1 && errno == EBADF) 781 if (!fd_valid (fd) && errno == EBADF)
527 fd_kill (EV_A_ fd); 782 fd_kill (EV_A_ fd);
528} 783}
529 784
530/* called on ENOMEM in select/poll to kill some fds and retry */ 785/* called on ENOMEM in select/poll to kill some fds and retry */
531static void noinline 786static void noinline
… …
545static void noinline 800static void noinline
546fd_rearm_all (EV_P) 801fd_rearm_all (EV_P)
547{ 802{
548 int fd; 803 int fd;
549 804
550 /* this should be highly optimised to not do anything but set a flag */
551 for (fd = 0; fd < anfdmax; ++fd) 805 for (fd = 0; fd < anfdmax; ++fd)
552 if (anfds [fd].events) 806 if (anfds [fd].events)
553 { 807 {
554 anfds [fd].events = 0; 808 anfds [fd].events = 0;
555 fd_change (EV_A_ fd); 809 fd_change (EV_A_ fd, EV_IOFDSET | 1);
556 } 810 }
557} 811}
558 812
559/*****************************************************************************/ 813/*****************************************************************************/
560 814
815/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree.
819 */
820
821/*
822 * at the moment we allow libev the luxury of two heaps,
823 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
824 * which is more cache-efficient.
825 * the difference is about 5% with 50000+ watchers.
826 */
827#if EV_USE_4HEAP
828
829#define DHEAP 4
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k))
833
834/* away from the root */
561void inline_speed 835void inline_speed
562upheap (WT *heap, int k) 836downheap (ANHE *heap, int N, int k)
563{ 837{
564 WT w = heap [k]; 838 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0;
565 840
566 while (k && heap [k >> 1]->at > w->at) 841 for (;;)
567 {
568 heap [k] = heap [k >> 1];
569 ((W)heap [k])->active = k + 1;
570 k >>= 1;
571 } 842 {
843 ev_tstamp minat;
844 ANHE *minpos;
845 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
572 846
847 /* find minimum child */
848 if (expect_true (pos + DHEAP - 1 < E))
849 {
850 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
851 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
852 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
853 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
854 }
855 else if (pos < E)
856 {
857 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
858 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
859 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
860 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
861 }
862 else
863 break;
864
865 if (ANHE_at (he) <= minat)
866 break;
867
868 heap [k] = *minpos;
869 ev_active (ANHE_w (*minpos)) = k;
870
871 k = minpos - heap;
872 }
873
573 heap [k] = w; 874 heap [k] = he;
574 ((W)heap [k])->active = k + 1; 875 ev_active (ANHE_w (he)) = k;
575
576} 876}
577 877
878#else /* 4HEAP */
879
880#define HEAP0 1
881#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p))
883
884/* away from the root */
578void inline_speed 885void inline_speed
579downheap (WT *heap, int N, int k) 886downheap (ANHE *heap, int N, int k)
580{ 887{
581 WT w = heap [k]; 888 ANHE he = heap [k];
582 889
583 while (k < (N >> 1)) 890 for (;;)
584 { 891 {
585 int j = k << 1; 892 int c = k << 1;
586 893
587 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 894 if (c > N + HEAP0 - 1)
588 ++j;
589
590 if (w->at <= heap [j]->at)
591 break; 895 break;
592 896
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0;
899
900 if (ANHE_at (he) <= ANHE_at (heap [c]))
901 break;
902
593 heap [k] = heap [j]; 903 heap [k] = heap [c];
594 ((W)heap [k])->active = k + 1; 904 ev_active (ANHE_w (heap [k])) = k;
905
595 k = j; 906 k = c;
596 } 907 }
597 908
598 heap [k] = w; 909 heap [k] = he;
599 ((W)heap [k])->active = k + 1; 910 ev_active (ANHE_w (he)) = k;
911}
912#endif
913
914/* towards the root */
915void inline_speed
916upheap (ANHE *heap, int k)
917{
918 ANHE he = heap [k];
919
920 for (;;)
921 {
922 int p = HPARENT (k);
923
924 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
925 break;
926
927 heap [k] = heap [p];
928 ev_active (ANHE_w (heap [k])) = k;
929 k = p;
930 }
931
932 heap [k] = he;
933 ev_active (ANHE_w (he)) = k;
600} 934}
601 935
602void inline_size 936void inline_size
603adjustheap (WT *heap, int N, int k) 937adjustheap (ANHE *heap, int N, int k)
604{ 938{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
605 upheap (heap, k); 940 upheap (heap, k);
941 else
606 downheap (heap, N, k); 942 downheap (heap, N, k);
943}
944
945/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size
947reheap (ANHE *heap, int N)
948{
949 int i;
950
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
952 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
953 for (i = 0; i < N; ++i)
954 upheap (heap, i + HEAP0);
607} 955}
608 956
609/*****************************************************************************/ 957/*****************************************************************************/
610 958
611typedef struct 959typedef struct
612{ 960{
613 WL head; 961 WL head;
614 sig_atomic_t volatile gotsig; 962 EV_ATOMIC_T gotsig;
615} ANSIG; 963} ANSIG;
616 964
617static ANSIG *signals; 965static ANSIG *signals;
618static int signalmax; 966static int signalmax;
619 967
620static int sigpipe [2]; 968static EV_ATOMIC_T gotsig;
621static sig_atomic_t volatile gotsig;
622static ev_io sigev;
623 969
624void inline_size 970void inline_size
625signals_init (ANSIG *base, int count) 971signals_init (ANSIG *base, int count)
626{ 972{
627 while (count--) 973 while (count--)
… …
631 977
632 ++base; 978 ++base;
633 } 979 }
634} 980}
635 981
636static void 982/*****************************************************************************/
637sighandler (int signum)
638{
639#if _WIN32
640 signal (signum, sighandler);
641#endif
642 983
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 984void inline_speed
688fd_intern (int fd) 985fd_intern (int fd)
689{ 986{
690#ifdef _WIN32 987#ifdef _WIN32
691 int arg = 1; 988 unsigned long arg = 1;
692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
693#else 990#else
694 fcntl (fd, F_SETFD, FD_CLOEXEC); 991 fcntl (fd, F_SETFD, FD_CLOEXEC);
695 fcntl (fd, F_SETFL, O_NONBLOCK); 992 fcntl (fd, F_SETFL, O_NONBLOCK);
696#endif 993#endif
697} 994}
698 995
699static void noinline 996static void noinline
700siginit (EV_P) 997evpipe_init (EV_P)
701{ 998{
999 if (!ev_is_active (&pipeev))
1000 {
1001#if EV_USE_EVENTFD
1002 if ((evfd = eventfd (0, 0)) >= 0)
1003 {
1004 evpipe [0] = -1;
1005 fd_intern (evfd);
1006 ev_io_set (&pipeev, evfd, EV_READ);
1007 }
1008 else
1009#endif
1010 {
1011 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe");
1013
702 fd_intern (sigpipe [0]); 1014 fd_intern (evpipe [0]);
703 fd_intern (sigpipe [1]); 1015 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ);
1017 }
704 1018
705 ev_io_set (&sigev, sigpipe [0], EV_READ);
706 ev_io_start (EV_A_ &sigev); 1019 ev_io_start (EV_A_ &pipeev);
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1020 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 }
1022}
1023
1024void inline_size
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{
1027 if (!*flag)
1028 {
1029 int old_errno = errno; /* save errno because write might clobber it */
1030
1031 *flag = 1;
1032
1033#if EV_USE_EVENTFD
1034 if (evfd >= 0)
1035 {
1036 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t));
1038 }
1039 else
1040#endif
1041 write (evpipe [1], &old_errno, 1);
1042
1043 errno = old_errno;
1044 }
1045}
1046
1047static void
1048pipecb (EV_P_ ev_io *iow, int revents)
1049{
1050#if EV_USE_EVENTFD
1051 if (evfd >= 0)
1052 {
1053 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t));
1055 }
1056 else
1057#endif
1058 {
1059 char dummy;
1060 read (evpipe [0], &dummy, 1);
1061 }
1062
1063 if (gotsig && ev_is_default_loop (EV_A))
1064 {
1065 int signum;
1066 gotsig = 0;
1067
1068 for (signum = signalmax; signum--; )
1069 if (signals [signum].gotsig)
1070 ev_feed_signal_event (EV_A_ signum + 1);
1071 }
1072
1073#if EV_ASYNC_ENABLE
1074 if (gotasync)
1075 {
1076 int i;
1077 gotasync = 0;
1078
1079 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent)
1081 {
1082 asyncs [i]->sent = 0;
1083 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1084 }
1085 }
1086#endif
708} 1087}
709 1088
710/*****************************************************************************/ 1089/*****************************************************************************/
711 1090
1091static void
1092ev_sighandler (int signum)
1093{
1094#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct;
1096#endif
1097
1098#if _WIN32
1099 signal (signum, ev_sighandler);
1100#endif
1101
1102 signals [signum - 1].gotsig = 1;
1103 evpipe_write (EV_A_ &gotsig);
1104}
1105
1106void noinline
1107ev_feed_signal_event (EV_P_ int signum)
1108{
1109 WL w;
1110
1111#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113#endif
1114
1115 --signum;
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return;
1119
1120 signals [signum].gotsig = 0;
1121
1122 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124}
1125
1126/*****************************************************************************/
1127
712static ev_child *childs [PID_HASHSIZE]; 1128static WL childs [EV_PID_HASHSIZE];
713 1129
714#ifndef _WIN32 1130#ifndef _WIN32
715 1131
716static ev_signal childev; 1132static ev_signal childev;
1133
1134#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0
1136#endif
1137
1138void inline_speed
1139child_reap (EV_P_ int chain, int pid, int status)
1140{
1141 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 {
1146 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1)))
1148 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1150 w->rpid = pid;
1151 w->rstatus = status;
1152 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1153 }
1154 }
1155}
717 1156
718#ifndef WCONTINUED 1157#ifndef WCONTINUED
719# define WCONTINUED 0 1158# define WCONTINUED 0
720#endif 1159#endif
721 1160
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 1161static void
738childcb (EV_P_ ev_signal *sw, int revents) 1162childcb (EV_P_ ev_signal *sw, int revents)
739{ 1163{
740 int pid, status; 1164 int pid, status;
741 1165
1166 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1167 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 1168 if (!WCONTINUED
1169 || errno != EINVAL
1170 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1171 return;
1172
744 /* make sure we are called again until all childs have been reaped */ 1173 /* 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 */ 1174 /* 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); 1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 1176
748 child_reap (EV_A_ sw, pid, pid, status); 1177 child_reap (EV_A_ pid, pid, status);
1178 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 */ 1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 1180}
752 1181
753#endif 1182#endif
754 1183
755/*****************************************************************************/ 1184/*****************************************************************************/
… …
827} 1256}
828 1257
829unsigned int 1258unsigned int
830ev_embeddable_backends (void) 1259ev_embeddable_backends (void)
831{ 1260{
832 return EVBACKEND_EPOLL 1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833 | EVBACKEND_KQUEUE 1262
834 | EVBACKEND_PORT; 1263 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1264 /* please fix it and tell me how to detect the fix */
1265 flags &= ~EVBACKEND_EPOLL;
1266
1267 return flags;
835} 1268}
836 1269
837unsigned int 1270unsigned int
838ev_backend (EV_P) 1271ev_backend (EV_P)
839{ 1272{
840 return backend; 1273 return backend;
841} 1274}
842 1275
843static void 1276unsigned int
1277ev_loop_count (EV_P)
1278{
1279 return loop_count;
1280}
1281
1282void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{
1285 io_blocktime = interval;
1286}
1287
1288void
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{
1291 timeout_blocktime = interval;
1292}
1293
1294static void noinline
844loop_init (EV_P_ unsigned int flags) 1295loop_init (EV_P_ unsigned int flags)
845{ 1296{
846 if (!backend) 1297 if (!backend)
847 { 1298 {
848#if EV_USE_MONOTONIC 1299#if EV_USE_MONOTONIC
… …
851 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852 have_monotonic = 1; 1303 have_monotonic = 1;
853 } 1304 }
854#endif 1305#endif
855 1306
856 ev_rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
857 mn_now = get_clock (); 1308 mn_now = get_clock ();
858 now_floor = mn_now; 1309 now_floor = mn_now;
859 rtmn_diff = ev_rt_now - mn_now; 1310 rtmn_diff = ev_rt_now - mn_now;
1311
1312 io_blocktime = 0.;
1313 timeout_blocktime = 0.;
1314 backend = 0;
1315 backend_fd = -1;
1316 gotasync = 0;
1317#if EV_USE_INOTIFY
1318 fs_fd = -2;
1319#endif
1320
1321 /* pid check not overridable via env */
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif
860 1326
861 if (!(flags & EVFLAG_NOENV) 1327 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure () 1328 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS")) 1329 && getenv ("LIBEV_FLAGS"))
864 flags = atoi (getenv ("LIBEV_FLAGS")); 1330 flags = atoi (getenv ("LIBEV_FLAGS"));
865 1331
866 if (!(flags & 0x0000ffffUL)) 1332 if (!(flags & 0x0000ffffU))
867 flags |= ev_recommended_backends (); 1333 flags |= ev_recommended_backends ();
868 1334
869 backend = 0;
870#if EV_USE_PORT 1335#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 1337#endif
873#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1339 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
881#endif 1346#endif
882#if EV_USE_SELECT 1347#if EV_USE_SELECT
883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884#endif 1349#endif
885 1350
886 ev_init (&sigev, sigcb); 1351 ev_init (&pipeev, pipecb);
887 ev_set_priority (&sigev, EV_MAXPRI); 1352 ev_set_priority (&pipeev, EV_MAXPRI);
888 } 1353 }
889} 1354}
890 1355
891static void 1356static void noinline
892loop_destroy (EV_P) 1357loop_destroy (EV_P)
893{ 1358{
894 int i; 1359 int i;
1360
1361 if (ev_is_active (&pipeev))
1362 {
1363 ev_ref (EV_A); /* signal watcher */
1364 ev_io_stop (EV_A_ &pipeev);
1365
1366#if EV_USE_EVENTFD
1367 if (evfd >= 0)
1368 close (evfd);
1369#endif
1370
1371 if (evpipe [0] >= 0)
1372 {
1373 close (evpipe [0]);
1374 close (evpipe [1]);
1375 }
1376 }
1377
1378#if EV_USE_INOTIFY
1379 if (fs_fd >= 0)
1380 close (fs_fd);
1381#endif
1382
1383 if (backend_fd >= 0)
1384 close (backend_fd);
895 1385
896#if EV_USE_PORT 1386#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1387 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 1388#endif
899#if EV_USE_KQUEUE 1389#if EV_USE_KQUEUE
… …
908#if EV_USE_SELECT 1398#if EV_USE_SELECT
909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1399 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910#endif 1400#endif
911 1401
912 for (i = NUMPRI; i--; ) 1402 for (i = NUMPRI; i--; )
1403 {
913 array_free (pending, [i]); 1404 array_free (pending, [i]);
1405#if EV_IDLE_ENABLE
1406 array_free (idle, [i]);
1407#endif
1408 }
1409
1410 ev_free (anfds); anfdmax = 0;
914 1411
915 /* have to use the microsoft-never-gets-it-right macro */ 1412 /* have to use the microsoft-never-gets-it-right macro */
916 array_free (fdchange, EMPTY0); 1413 array_free (fdchange, EMPTY);
917 array_free (timer, EMPTY0); 1414 array_free (timer, EMPTY);
918#if EV_PERIODIC_ENABLE 1415#if EV_PERIODIC_ENABLE
919 array_free (periodic, EMPTY0); 1416 array_free (periodic, EMPTY);
920#endif 1417#endif
1418#if EV_FORK_ENABLE
921 array_free (idle, EMPTY0); 1419 array_free (fork, EMPTY);
1420#endif
922 array_free (prepare, EMPTY0); 1421 array_free (prepare, EMPTY);
923 array_free (check, EMPTY0); 1422 array_free (check, EMPTY);
1423#if EV_ASYNC_ENABLE
1424 array_free (async, EMPTY);
1425#endif
924 1426
925 backend = 0; 1427 backend = 0;
926} 1428}
927 1429
928static void 1430#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P);
1432#endif
1433
1434void inline_size
929loop_fork (EV_P) 1435loop_fork (EV_P)
930{ 1436{
931#if EV_USE_PORT 1437#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 1439#endif
… …
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1441 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif 1442#endif
937#if EV_USE_EPOLL 1443#if EV_USE_EPOLL
938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1444 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939#endif 1445#endif
1446#if EV_USE_INOTIFY
1447 infy_fork (EV_A);
1448#endif
940 1449
941 if (ev_is_active (&sigev)) 1450 if (ev_is_active (&pipeev))
942 { 1451 {
943 /* default loop */ 1452 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */
1454 gotsig = 1;
1455#if EV_ASYNC_ENABLE
1456 gotasync = 1;
1457#endif
944 1458
945 ev_ref (EV_A); 1459 ev_ref (EV_A);
946 ev_io_stop (EV_A_ &sigev); 1460 ev_io_stop (EV_A_ &pipeev);
1461
1462#if EV_USE_EVENTFD
1463 if (evfd >= 0)
1464 close (evfd);
1465#endif
1466
1467 if (evpipe [0] >= 0)
1468 {
947 close (sigpipe [0]); 1469 close (evpipe [0]);
948 close (sigpipe [1]); 1470 close (evpipe [1]);
1471 }
949 1472
950 while (pipe (sigpipe))
951 syserr ("(libev) error creating pipe");
952
953 siginit (EV_A); 1473 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ);
954 } 1476 }
955 1477
956 postfork = 0; 1478 postfork = 0;
957} 1479}
958 1480
959#if EV_MULTIPLICITY 1481#if EV_MULTIPLICITY
1482
960struct ev_loop * 1483struct ev_loop *
961ev_loop_new (unsigned int flags) 1484ev_loop_new (unsigned int flags)
962{ 1485{
963 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
964 1487
… …
980} 1503}
981 1504
982void 1505void
983ev_loop_fork (EV_P) 1506ev_loop_fork (EV_P)
984{ 1507{
985 postfork = 1; 1508 postfork = 1; /* must be in line with ev_default_fork */
986} 1509}
987 1510
1511#if EV_VERIFY
1512void noinline
1513verify_watcher (EV_P_ W w)
1514{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516
1517 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519}
1520
1521static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N)
1523{
1524 int i;
1525
1526 for (i = HEAP0; i < N + HEAP0; ++i)
1527 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 }
1534}
1535
1536static void noinline
1537array_verify (EV_P_ W *ws, int cnt)
1538{
1539 while (cnt--)
1540 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]);
1543 }
1544}
1545#endif
1546
1547void
1548ev_loop_verify (EV_P)
1549{
1550#if EV_VERIFY
1551 int i;
1552 WL w;
1553
1554 assert (activecnt >= -1);
1555
1556 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1559
1560 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next)
1563 {
1564 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 }
1568
1569 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt);
1571
1572#if EV_PERIODIC_ENABLE
1573 assert (periodicmax >= periodiccnt);
1574 verify_heap (EV_A_ periodics, periodiccnt);
1575#endif
1576
1577 for (i = NUMPRI; i--; )
1578 {
1579 assert (pendingmax [i] >= pendingcnt [i]);
1580#if EV_IDLE_ENABLE
1581 assert (idleall >= 0);
1582 assert (idlemax [i] >= idlecnt [i]);
1583 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1584#endif
1585 }
1586
1587#if EV_FORK_ENABLE
1588 assert (forkmax >= forkcnt);
1589 array_verify (EV_A_ (W *)forks, forkcnt);
1590#endif
1591
1592#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif
1596
1597 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt);
1599
1600 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt);
1602
1603# if 0
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
988#endif 1606# endif
1607#endif
1608}
1609
1610#endif /* multiplicity */
989 1611
990#if EV_MULTIPLICITY 1612#if EV_MULTIPLICITY
991struct ev_loop * 1613struct ev_loop *
992ev_default_loop_init (unsigned int flags) 1614ev_default_loop_init (unsigned int flags)
993#else 1615#else
994int 1616int
995ev_default_loop (unsigned int flags) 1617ev_default_loop (unsigned int flags)
996#endif 1618#endif
997{ 1619{
998 if (sigpipe [0] == sigpipe [1])
999 if (pipe (sigpipe))
1000 return 0;
1001
1002 if (!ev_default_loop_ptr) 1620 if (!ev_default_loop_ptr)
1003 { 1621 {
1004#if EV_MULTIPLICITY 1622#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006#else 1624#else
… …
1009 1627
1010 loop_init (EV_A_ flags); 1628 loop_init (EV_A_ flags);
1011 1629
1012 if (ev_backend (EV_A)) 1630 if (ev_backend (EV_A))
1013 { 1631 {
1014 siginit (EV_A);
1015
1016#ifndef _WIN32 1632#ifndef _WIN32
1017 ev_signal_init (&childev, childcb, SIGCHLD); 1633 ev_signal_init (&childev, childcb, SIGCHLD);
1018 ev_set_priority (&childev, EV_MAXPRI); 1634 ev_set_priority (&childev, EV_MAXPRI);
1019 ev_signal_start (EV_A_ &childev); 1635 ev_signal_start (EV_A_ &childev);
1020 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1636 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1037#ifndef _WIN32 1653#ifndef _WIN32
1038 ev_ref (EV_A); /* child watcher */ 1654 ev_ref (EV_A); /* child watcher */
1039 ev_signal_stop (EV_A_ &childev); 1655 ev_signal_stop (EV_A_ &childev);
1040#endif 1656#endif
1041 1657
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); 1658 loop_destroy (EV_A);
1049} 1659}
1050 1660
1051void 1661void
1052ev_default_fork (void) 1662ev_default_fork (void)
… …
1054#if EV_MULTIPLICITY 1664#if EV_MULTIPLICITY
1055 struct ev_loop *loop = ev_default_loop_ptr; 1665 struct ev_loop *loop = ev_default_loop_ptr;
1056#endif 1666#endif
1057 1667
1058 if (backend) 1668 if (backend)
1059 postfork = 1; 1669 postfork = 1; /* must be in line with ev_loop_fork */
1060} 1670}
1061 1671
1062/*****************************************************************************/ 1672/*****************************************************************************/
1063 1673
1064int inline_size 1674void
1065any_pending (EV_P) 1675ev_invoke (EV_P_ void *w, int revents)
1066{ 1676{
1067 int pri; 1677 EV_CB_INVOKE ((W)w, revents);
1068
1069 for (pri = NUMPRI; pri--; )
1070 if (pendingcnt [pri])
1071 return 1;
1072
1073 return 0;
1074} 1678}
1075 1679
1076void inline_speed 1680void inline_speed
1077call_pending (EV_P) 1681call_pending (EV_P)
1078{ 1682{
… …
1083 { 1687 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1689
1086 if (expect_true (p->w)) 1690 if (expect_true (p->w))
1087 { 1691 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1693
1090 p->w->pending = 0; 1694 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1695 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK;
1092 } 1697 }
1093 } 1698 }
1094} 1699}
1095 1700
1701#if EV_IDLE_ENABLE
1702void inline_size
1703idle_reify (EV_P)
1704{
1705 if (expect_false (idleall))
1706 {
1707 int pri;
1708
1709 for (pri = NUMPRI; pri--; )
1710 {
1711 if (pendingcnt [pri])
1712 break;
1713
1714 if (idlecnt [pri])
1715 {
1716 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1717 break;
1718 }
1719 }
1720 }
1721}
1722#endif
1723
1096void inline_size 1724void inline_size
1097timers_reify (EV_P) 1725timers_reify (EV_P)
1098{ 1726{
1727 EV_FREQUENT_CHECK;
1728
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1100 { 1730 {
1101 ev_timer *w = timers [0]; 1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1102 1732
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1734
1105 /* first reschedule or stop timer */ 1735 /* first reschedule or stop timer */
1106 if (w->repeat) 1736 if (w->repeat)
1107 { 1737 {
1738 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now;
1741
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109 1743
1110 ((WT)w)->at += w->repeat; 1744 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); 1745 downheap (timers, timercnt, HEAP0);
1115 } 1746 }
1116 else 1747 else
1117 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118 1749
1750 EV_FREQUENT_CHECK;
1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1120 } 1752 }
1121} 1753}
1122 1754
1123#if EV_PERIODIC_ENABLE 1755#if EV_PERIODIC_ENABLE
1124void inline_size 1756void inline_size
1125periodics_reify (EV_P) 1757periodics_reify (EV_P)
1126{ 1758{
1759 EV_FREQUENT_CHECK;
1760
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1128 { 1762 {
1129 ev_periodic *w = periodics [0]; 1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1130 1764
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1766
1133 /* first reschedule or stop timer */ 1767 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1768 if (w->reschedule_cb)
1135 { 1769 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771
1137 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773
1774 ANHE_at_cache (periodics [HEAP0]);
1138 downheap ((WT *)periodics, periodiccnt, 0); 1775 downheap (periodics, periodiccnt, HEAP0);
1139 } 1776 }
1140 else if (w->interval) 1777 else if (w->interval)
1141 { 1778 {
1142 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1779 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)); 1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1144 downheap ((WT *)periodics, periodiccnt, 0); 1794 downheap (periodics, periodiccnt, HEAP0);
1145 } 1795 }
1146 else 1796 else
1147 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148 1798
1799 EV_FREQUENT_CHECK;
1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1150 } 1801 }
1151} 1802}
1152 1803
1153static void noinline 1804static void noinline
1154periodics_reschedule (EV_P) 1805periodics_reschedule (EV_P)
1155{ 1806{
1156 int i; 1807 int i;
1157 1808
1158 /* adjust periodics after time jump */ 1809 /* adjust periodics after time jump */
1159 for (i = 0; i < periodiccnt; ++i) 1810 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1160 { 1811 {
1161 ev_periodic *w = periodics [i]; 1812 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1162 1813
1163 if (w->reschedule_cb) 1814 if (w->reschedule_cb)
1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1165 else if (w->interval) 1816 else if (w->interval)
1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1817 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1818
1819 ANHE_at_cache (periodics [i]);
1820 }
1821
1822 reheap (periodics, periodiccnt);
1823}
1824#endif
1825
1826void inline_speed
1827time_update (EV_P_ ev_tstamp max_block)
1828{
1829 int i;
1830
1831#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic))
1167 } 1833 {
1834 ev_tstamp odiff = rtmn_diff;
1168 1835
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 (); 1836 mn_now = get_clock ();
1179 1837
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1839 /* interpolate in the meantime */
1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1840 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181 { 1841 {
1182 ev_rt_now = rtmn_diff + mn_now; 1842 ev_rt_now = rtmn_diff + mn_now;
1183 return 0; 1843 return;
1184 } 1844 }
1185 else 1845
1186 {
1187 now_floor = mn_now; 1846 now_floor = mn_now;
1188 ev_rt_now = ev_time (); 1847 ev_rt_now = ev_time ();
1189 return 1;
1190 }
1191}
1192 1848
1193void inline_size 1849 /* loop a few times, before making important decisions.
1194time_update (EV_P) 1850 * on the choice of "4": one iteration isn't enough,
1195{ 1851 * in case we get preempted during the calls to
1196 int i; 1852 * ev_time and get_clock. a second call is almost guaranteed
1197 1853 * to succeed in that case, though. and looping a few more times
1198#if EV_USE_MONOTONIC 1854 * doesn't hurt either as we only do this on time-jumps or
1199 if (expect_true (have_monotonic)) 1855 * in the unlikely event of having been preempted here.
1200 { 1856 */
1201 if (time_update_monotonic (EV_A)) 1857 for (i = 4; --i; )
1202 { 1858 {
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; 1859 rtmn_diff = ev_rt_now - mn_now;
1216 1860
1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1861 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1218 return; /* all is well */ 1862 return; /* all is well */
1219 1863
1220 ev_rt_now = ev_time (); 1864 ev_rt_now = ev_time ();
1221 mn_now = get_clock (); 1865 mn_now = get_clock ();
1222 now_floor = mn_now; 1866 now_floor = mn_now;
1223 } 1867 }
1224 1868
1225# if EV_PERIODIC_ENABLE 1869# if EV_PERIODIC_ENABLE
1226 periodics_reschedule (EV_A); 1870 periodics_reschedule (EV_A);
1227# endif 1871# endif
1228 /* no timer adjustment, as the monotonic clock doesn't jump */ 1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230 }
1231 } 1874 }
1232 else 1875 else
1233#endif 1876#endif
1234 { 1877 {
1235 ev_rt_now = ev_time (); 1878 ev_rt_now = ev_time ();
1236 1879
1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238 { 1881 {
1239#if EV_PERIODIC_ENABLE 1882#if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1883 periodics_reschedule (EV_A);
1241#endif 1884#endif
1242
1243 /* adjust timers. this is easy, as the offset is the same for all */ 1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1244 for (i = 0; i < timercnt; ++i) 1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1245 ((WT)timers [i])->at += ev_rt_now - mn_now; 1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1246 } 1892 }
1247 1893
1248 mn_now = ev_rt_now; 1894 mn_now = ev_rt_now;
1249 } 1895 }
1250} 1896}
… …
1264static int loop_done; 1910static int loop_done;
1265 1911
1266void 1912void
1267ev_loop (EV_P_ int flags) 1913ev_loop (EV_P_ int flags)
1268{ 1914{
1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1915 loop_done = EVUNLOOP_CANCEL;
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
1272 1916
1273 while (activecnt) 1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1918
1919 do
1274 { 1920 {
1921#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A);
1923#endif
1924
1925#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid))
1928 {
1929 curpid = getpid ();
1930 postfork = 1;
1931 }
1932#endif
1933
1934#if EV_FORK_ENABLE
1935 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork))
1937 if (forkcnt)
1938 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A);
1941 }
1942#endif
1943
1275 /* queue check watchers (and execute them) */ 1944 /* queue prepare watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1945 if (expect_false (preparecnt))
1277 { 1946 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1948 call_pending (EV_A);
1280 } 1949 }
1281 1950
1951 if (expect_false (!activecnt))
1952 break;
1953
1282 /* we might have forked, so reify kernel state if necessary */ 1954 /* we might have forked, so reify kernel state if necessary */
1283 if (expect_false (postfork)) 1955 if (expect_false (postfork))
1284 loop_fork (EV_A); 1956 loop_fork (EV_A);
1285 1957
1286 /* update fd-related kernel structures */ 1958 /* update fd-related kernel structures */
1287 fd_reify (EV_A); 1959 fd_reify (EV_A);
1288 1960
1289 /* calculate blocking time */ 1961 /* calculate blocking time */
1290 { 1962 {
1291 double block; 1963 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.;
1292 1965
1293 if (flags & EVLOOP_NONBLOCK || idlecnt) 1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294 block = 0.; /* do not block at all */
1295 else
1296 { 1967 {
1297 /* update time to cancel out callback processing overhead */ 1968 /* 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); 1969 time_update (EV_A_ 1e100);
1301 else
1302#endif
1303 {
1304 ev_rt_now = ev_time ();
1305 mn_now = ev_rt_now;
1306 }
1307 1970
1308 block = MAX_BLOCKTIME; 1971 waittime = MAX_BLOCKTIME;
1309 1972
1310 if (timercnt) 1973 if (timercnt)
1311 { 1974 {
1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1313 if (block > to) block = to; 1976 if (waittime > to) waittime = to;
1314 } 1977 }
1315 1978
1316#if EV_PERIODIC_ENABLE 1979#if EV_PERIODIC_ENABLE
1317 if (periodiccnt) 1980 if (periodiccnt)
1318 { 1981 {
1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1320 if (block > to) block = to; 1983 if (waittime > to) waittime = to;
1321 } 1984 }
1322#endif 1985#endif
1323 1986
1324 if (expect_false (block < 0.)) block = 0.; 1987 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime;
1989
1990 sleeptime = waittime - backend_fudge;
1991
1992 if (expect_true (sleeptime > io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 {
1997 ev_sleep (sleeptime);
1998 waittime -= sleeptime;
1999 }
1325 } 2000 }
1326 2001
2002 ++loop_count;
1327 backend_poll (EV_A_ block); 2003 backend_poll (EV_A_ waittime);
2004
2005 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime);
1328 } 2007 }
1329
1330 /* update ev_rt_now, do magic */
1331 time_update (EV_A);
1332 2008
1333 /* queue pending timers and reschedule them */ 2009 /* queue pending timers and reschedule them */
1334 timers_reify (EV_A); /* relative timers called last */ 2010 timers_reify (EV_A); /* relative timers called last */
1335#if EV_PERIODIC_ENABLE 2011#if EV_PERIODIC_ENABLE
1336 periodics_reify (EV_A); /* absolute timers called first */ 2012 periodics_reify (EV_A); /* absolute timers called first */
1337#endif 2013#endif
1338 2014
2015#if EV_IDLE_ENABLE
1339 /* queue idle watchers unless other events are pending */ 2016 /* queue idle watchers unless other events are pending */
1340 if (idlecnt && !any_pending (EV_A)) 2017 idle_reify (EV_A);
1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2018#endif
1342 2019
1343 /* queue check watchers, to be executed first */ 2020 /* queue check watchers, to be executed first */
1344 if (expect_false (checkcnt)) 2021 if (expect_false (checkcnt))
1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346 2023
1347 call_pending (EV_A); 2024 call_pending (EV_A);
1348
1349 if (expect_false (loop_done))
1350 break;
1351 } 2025 }
2026 while (expect_true (
2027 activecnt
2028 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 ));
1352 2031
1353 if (loop_done == EVUNLOOP_ONE) 2032 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL; 2033 loop_done = EVUNLOOP_CANCEL;
1355} 2034}
1356 2035
… …
1383 head = &(*head)->next; 2062 head = &(*head)->next;
1384 } 2063 }
1385} 2064}
1386 2065
1387void inline_speed 2066void inline_speed
1388ev_clear_pending (EV_P_ W w) 2067clear_pending (EV_P_ W w)
1389{ 2068{
1390 if (w->pending) 2069 if (w->pending)
1391 { 2070 {
1392 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2071 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393 w->pending = 0; 2072 w->pending = 0;
1394 } 2073 }
1395} 2074}
1396 2075
2076int
2077ev_clear_pending (EV_P_ void *w)
2078{
2079 W w_ = (W)w;
2080 int pending = w_->pending;
2081
2082 if (expect_true (pending))
2083 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2085 w_->pending = 0;
2086 p->w = 0;
2087 return p->events;
2088 }
2089 else
2090 return 0;
2091}
2092
2093void inline_size
2094pri_adjust (EV_P_ W w)
2095{
2096 int pri = w->priority;
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri;
2100}
2101
1397void inline_speed 2102void inline_speed
1398ev_start (EV_P_ W w, int active) 2103ev_start (EV_P_ W w, int active)
1399{ 2104{
1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2105 pri_adjust (EV_A_ w);
1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403 w->active = active; 2106 w->active = active;
1404 ev_ref (EV_A); 2107 ev_ref (EV_A);
1405} 2108}
1406 2109
1407void inline_size 2110void inline_size
… …
1411 w->active = 0; 2114 w->active = 0;
1412} 2115}
1413 2116
1414/*****************************************************************************/ 2117/*****************************************************************************/
1415 2118
1416void 2119void noinline
1417ev_io_start (EV_P_ ev_io *w) 2120ev_io_start (EV_P_ ev_io *w)
1418{ 2121{
1419 int fd = w->fd; 2122 int fd = w->fd;
1420 2123
1421 if (expect_false (ev_is_active (w))) 2124 if (expect_false (ev_is_active (w)))
1422 return; 2125 return;
1423 2126
1424 assert (("ev_io_start called with negative fd", fd >= 0)); 2127 assert (("ev_io_start called with negative fd", fd >= 0));
1425 2128
2129 EV_FREQUENT_CHECK;
2130
1426 ev_start (EV_A_ (W)w, 1); 2131 ev_start (EV_A_ (W)w, 1);
1427 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2133 wlist_add (&anfds[fd].head, (WL)w);
1429 2134
1430 fd_change (EV_A_ fd); 2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1431} 2136 w->events &= ~EV_IOFDSET;
1432 2137
1433void 2138 EV_FREQUENT_CHECK;
2139}
2140
2141void noinline
1434ev_io_stop (EV_P_ ev_io *w) 2142ev_io_stop (EV_P_ ev_io *w)
1435{ 2143{
1436 ev_clear_pending (EV_A_ (W)w); 2144 clear_pending (EV_A_ (W)w);
1437 if (expect_false (!ev_is_active (w))) 2145 if (expect_false (!ev_is_active (w)))
1438 return; 2146 return;
1439 2147
1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441 2149
2150 EV_FREQUENT_CHECK;
2151
1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2152 wlist_del (&anfds[w->fd].head, (WL)w);
1443 ev_stop (EV_A_ (W)w); 2153 ev_stop (EV_A_ (W)w);
1444 2154
1445 fd_change (EV_A_ w->fd); 2155 fd_change (EV_A_ w->fd, 1);
1446}
1447 2156
1448void 2157 EV_FREQUENT_CHECK;
2158}
2159
2160void noinline
1449ev_timer_start (EV_P_ ev_timer *w) 2161ev_timer_start (EV_P_ ev_timer *w)
1450{ 2162{
1451 if (expect_false (ev_is_active (w))) 2163 if (expect_false (ev_is_active (w)))
1452 return; 2164 return;
1453 2165
1454 ((WT)w)->at += mn_now; 2166 ev_at (w) += mn_now;
1455 2167
1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457 2169
2170 EV_FREQUENT_CHECK;
2171
2172 ++timercnt;
1458 ev_start (EV_A_ (W)w, ++timercnt); 2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2174 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1460 timers [timercnt - 1] = w; 2175 ANHE_w (timers [ev_active (w)]) = (WT)w;
1461 upheap ((WT *)timers, timercnt - 1); 2176 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w));
1462 2178
2179 EV_FREQUENT_CHECK;
2180
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1464} 2182}
1465 2183
1466void 2184void noinline
1467ev_timer_stop (EV_P_ ev_timer *w) 2185ev_timer_stop (EV_P_ ev_timer *w)
1468{ 2186{
1469 ev_clear_pending (EV_A_ (W)w); 2187 clear_pending (EV_A_ (W)w);
1470 if (expect_false (!ev_is_active (w))) 2188 if (expect_false (!ev_is_active (w)))
1471 return; 2189 return;
1472 2190
2191 EV_FREQUENT_CHECK;
2192
2193 {
2194 int active = ev_active (w);
2195
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1474 2197
2198 --timercnt;
2199
1475 if (expect_true (((W)w)->active < timercnt--)) 2200 if (expect_true (active < timercnt + HEAP0))
1476 { 2201 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 2202 timers [active] = timers [timercnt + HEAP0];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2203 adjustheap (timers, timercnt, active);
1479 } 2204 }
2205 }
1480 2206
1481 ((WT)w)->at -= mn_now; 2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now;
1482 2210
1483 ev_stop (EV_A_ (W)w); 2211 ev_stop (EV_A_ (W)w);
1484} 2212}
1485 2213
1486void 2214void noinline
1487ev_timer_again (EV_P_ ev_timer *w) 2215ev_timer_again (EV_P_ ev_timer *w)
1488{ 2216{
2217 EV_FREQUENT_CHECK;
2218
1489 if (ev_is_active (w)) 2219 if (ev_is_active (w))
1490 { 2220 {
1491 if (w->repeat) 2221 if (w->repeat)
1492 { 2222 {
1493 ((WT)w)->at = mn_now + w->repeat; 2223 ev_at (w) = mn_now + w->repeat;
2224 ANHE_at_cache (timers [ev_active (w)]);
1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2225 adjustheap (timers, timercnt, ev_active (w));
1495 } 2226 }
1496 else 2227 else
1497 ev_timer_stop (EV_A_ w); 2228 ev_timer_stop (EV_A_ w);
1498 } 2229 }
1499 else if (w->repeat) 2230 else if (w->repeat)
1500 { 2231 {
1501 w->at = w->repeat; 2232 ev_at (w) = w->repeat;
1502 ev_timer_start (EV_A_ w); 2233 ev_timer_start (EV_A_ w);
1503 } 2234 }
2235
2236 EV_FREQUENT_CHECK;
1504} 2237}
1505 2238
1506#if EV_PERIODIC_ENABLE 2239#if EV_PERIODIC_ENABLE
1507void 2240void noinline
1508ev_periodic_start (EV_P_ ev_periodic *w) 2241ev_periodic_start (EV_P_ ev_periodic *w)
1509{ 2242{
1510 if (expect_false (ev_is_active (w))) 2243 if (expect_false (ev_is_active (w)))
1511 return; 2244 return;
1512 2245
1513 if (w->reschedule_cb) 2246 if (w->reschedule_cb)
1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1515 else if (w->interval) 2248 else if (w->interval)
1516 { 2249 {
1517 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2250 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 */ 2251 /* 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; 2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520 } 2253 }
2254 else
2255 ev_at (w) = w->offset;
1521 2256
2257 EV_FREQUENT_CHECK;
2258
2259 ++periodiccnt;
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 2260 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2261 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 2262 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 2263 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w));
1526 2265
2266 EV_FREQUENT_CHECK;
2267
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1528} 2269}
1529 2270
1530void 2271void noinline
1531ev_periodic_stop (EV_P_ ev_periodic *w) 2272ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 2273{
1533 ev_clear_pending (EV_A_ (W)w); 2274 clear_pending (EV_A_ (W)w);
1534 if (expect_false (!ev_is_active (w))) 2275 if (expect_false (!ev_is_active (w)))
1535 return; 2276 return;
1536 2277
2278 EV_FREQUENT_CHECK;
2279
2280 {
2281 int active = ev_active (w);
2282
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1538 2284
2285 --periodiccnt;
2286
1539 if (expect_true (((W)w)->active < periodiccnt--)) 2287 if (expect_true (active < periodiccnt + HEAP0))
1540 { 2288 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2289 periodics [active] = periodics [periodiccnt + HEAP0];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2290 adjustheap (periodics, periodiccnt, active);
1543 } 2291 }
2292 }
2293
2294 EV_FREQUENT_CHECK;
1544 2295
1545 ev_stop (EV_A_ (W)w); 2296 ev_stop (EV_A_ (W)w);
1546} 2297}
1547 2298
1548void 2299void noinline
1549ev_periodic_again (EV_P_ ev_periodic *w) 2300ev_periodic_again (EV_P_ ev_periodic *w)
1550{ 2301{
1551 /* TODO: use adjustheap and recalculation */ 2302 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 2303 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 2304 ev_periodic_start (EV_A_ w);
1554} 2305}
1555#endif 2306#endif
1556 2307
1557void 2308#ifndef SA_RESTART
2309# define SA_RESTART 0
2310#endif
2311
2312void noinline
1558ev_idle_start (EV_P_ ev_idle *w) 2313ev_signal_start (EV_P_ ev_signal *w)
1559{ 2314{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
1560 if (expect_false (ev_is_active (w))) 2318 if (expect_false (ev_is_active (w)))
1561 return; 2319 return;
1562 2320
1563 ev_start (EV_A_ (W)w, ++idlecnt); 2321 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 2322
1568void 2323 evpipe_init (EV_A);
1569ev_idle_stop (EV_P_ ev_idle *w) 2324
1570{ 2325 EV_FREQUENT_CHECK;
1571 ev_clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w)))
1573 return;
1574 2326
1575 { 2327 {
1576 int active = ((W)w)->active; 2328#ifndef _WIN32
1577 idles [active - 1] = idles [--idlecnt]; 2329 sigset_t full, prev;
1578 ((W)idles [active - 1])->active = active; 2330 sigfillset (&full);
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2335
2336#ifndef _WIN32
2337 sigprocmask (SIG_SETMASK, &prev, 0);
2338#endif
1579 } 2339 }
1580 2340
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); 2341 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); 2342 wlist_add (&signals [w->signum - 1].head, (WL)w);
1656 2343
1657 if (!((WL)w)->next) 2344 if (!((WL)w)->next)
1658 { 2345 {
1659#if _WIN32 2346#if _WIN32
1660 signal (w->signum, sighandler); 2347 signal (w->signum, ev_sighandler);
1661#else 2348#else
1662 struct sigaction sa; 2349 struct sigaction sa;
1663 sa.sa_handler = sighandler; 2350 sa.sa_handler = ev_sighandler;
1664 sigfillset (&sa.sa_mask); 2351 sigfillset (&sa.sa_mask);
1665 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1666 sigaction (w->signum, &sa, 0); 2353 sigaction (w->signum, &sa, 0);
1667#endif 2354#endif
1668 } 2355 }
1669}
1670 2356
1671void 2357 EV_FREQUENT_CHECK;
2358}
2359
2360void noinline
1672ev_signal_stop (EV_P_ ev_signal *w) 2361ev_signal_stop (EV_P_ ev_signal *w)
1673{ 2362{
1674 ev_clear_pending (EV_A_ (W)w); 2363 clear_pending (EV_A_ (W)w);
1675 if (expect_false (!ev_is_active (w))) 2364 if (expect_false (!ev_is_active (w)))
1676 return; 2365 return;
1677 2366
2367 EV_FREQUENT_CHECK;
2368
1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2369 wlist_del (&signals [w->signum - 1].head, (WL)w);
1679 ev_stop (EV_A_ (W)w); 2370 ev_stop (EV_A_ (W)w);
1680 2371
1681 if (!signals [w->signum - 1].head) 2372 if (!signals [w->signum - 1].head)
1682 signal (w->signum, SIG_DFL); 2373 signal (w->signum, SIG_DFL);
2374
2375 EV_FREQUENT_CHECK;
1683} 2376}
1684 2377
1685void 2378void
1686ev_child_start (EV_P_ ev_child *w) 2379ev_child_start (EV_P_ ev_child *w)
1687{ 2380{
… …
1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1690#endif 2383#endif
1691 if (expect_false (ev_is_active (w))) 2384 if (expect_false (ev_is_active (w)))
1692 return; 2385 return;
1693 2386
2387 EV_FREQUENT_CHECK;
2388
1694 ev_start (EV_A_ (W)w, 1); 2389 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2391
2392 EV_FREQUENT_CHECK;
1696} 2393}
1697 2394
1698void 2395void
1699ev_child_stop (EV_P_ ev_child *w) 2396ev_child_stop (EV_P_ ev_child *w)
1700{ 2397{
1701 ev_clear_pending (EV_A_ (W)w); 2398 clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 2399 if (expect_false (!ev_is_active (w)))
1703 return; 2400 return;
1704 2401
2402 EV_FREQUENT_CHECK;
2403
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1706 ev_stop (EV_A_ (W)w); 2405 ev_stop (EV_A_ (W)w);
1707}
1708 2406
2407 EV_FREQUENT_CHECK;
2408}
2409
1709#if EV_EMBED_ENABLE 2410#if EV_STAT_ENABLE
2411
2412# ifdef _WIN32
2413# undef lstat
2414# define lstat(a,b) _stati64 (a,b)
2415# endif
2416
2417#define DEF_STAT_INTERVAL 5.0074891
2418#define MIN_STAT_INTERVAL 0.1074891
2419
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421
2422#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192
2424
1710void noinline 2425static void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w) 2426infy_add (EV_P_ ev_stat *w)
1712{ 2427{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK); 2428 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);
2429
2430 if (w->wd < 0)
2431 {
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433
2434 /* monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */
2436 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 {
2439 char path [4096];
2440 strcpy (path, w->path);
2441
2442 do
2443 {
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446
2447 char *pend = strrchr (path, '/');
2448
2449 if (!pend)
2450 break; /* whoops, no '/', complain to your admin */
2451
2452 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 }
2457 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460
2461 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2463}
2464
2465static void noinline
2466infy_del (EV_P_ ev_stat *w)
2467{
2468 int slot;
2469 int wd = w->wd;
2470
2471 if (wd < 0)
2472 return;
2473
2474 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w);
2477
2478 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd);
2480}
2481
2482static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{
2485 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488 infy_wd (EV_A_ slot, wd, ev);
2489 else
2490 {
2491 WL w_;
2492
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2494 {
2495 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */
2497
2498 if (w->wd == wd || wd == -1)
2499 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 {
2502 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */
2504 }
2505
2506 stat_timer_cb (EV_A_ &w->timer, 0);
2507 }
2508 }
2509 }
1714} 2510}
1715 2511
1716static void 2512static void
1717embed_cb (EV_P_ ev_io *io, int revents) 2513infy_cb (EV_P_ ev_io *w, int revents)
1718{ 2514{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2515 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf));
1720 2519
1721 if (ev_cb (w)) 2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2521 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1723 else
1724 ev_embed_sweep (loop, w);
1725} 2522}
1726 2523
1727void 2524void inline_size
1728ev_embed_start (EV_P_ ev_embed *w) 2525infy_init (EV_P)
1729{ 2526{
1730 if (expect_false (ev_is_active (w))) 2527 if (fs_fd != -2)
1731 return; 2528 return;
1732 2529
2530 fs_fd = inotify_init ();
2531
2532 if (fs_fd >= 0)
1733 { 2533 {
1734 struct ev_loop *loop = w->loop; 2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2535 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); 2536 ev_io_start (EV_A_ &fs_w);
1741 2537 }
1742 ev_start (EV_A_ (W)w, 1);
1743} 2538}
1744 2539
1745void 2540void inline_size
1746ev_embed_stop (EV_P_ ev_embed *w) 2541infy_fork (EV_P)
1747{ 2542{
1748 ev_clear_pending (EV_A_ (W)w); 2543 int slot;
1749 if (expect_false (!ev_is_active (w))) 2544
2545 if (fs_fd < 0)
1750 return; 2546 return;
1751 2547
1752 ev_io_stop (EV_A_ &w->io); 2548 close (fs_fd);
2549 fs_fd = inotify_init ();
1753 2550
1754 ev_stop (EV_A_ (W)w); 2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1755} 2552 {
1756#endif 2553 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0;
1757 2555
1758#if EV_STAT_ENABLE 2556 while (w_)
2557 {
2558 ev_stat *w = (ev_stat *)w_;
2559 w_ = w_->next; /* lets us add this watcher */
1759 2560
1760# ifdef _WIN32 2561 w->wd = -1;
1761# define lstat(a,b) stat(a,b) 2562
2563 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else
2566 ev_timer_start (EV_A_ &w->timer);
2567 }
2568
2569 }
2570}
2571
1762# endif 2572#endif
1763 2573
1764void 2574void
1765ev_stat_stat (EV_P_ ev_stat *w) 2575ev_stat_stat (EV_P_ ev_stat *w)
1766{ 2576{
1767 if (lstat (w->path, &w->attr) < 0) 2577 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0; 2578 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink) 2579 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1; 2580 w->attr.st_nlink = 1;
1771} 2581}
1772 2582
1773static void 2583static void noinline
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2584stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{ 2585{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777 2587
1778 /* we copy this here each the time so that */ 2588 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */ 2589 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr; 2590 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w); 2591 ev_stat_stat (EV_A_ w);
1782 2592
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if (
2595 w->prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime
2606 ) {
2607 #if EV_USE_INOTIFY
2608 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */
2611 #endif
2612
1784 ev_feed_event (EV_A_ w, EV_STAT); 2613 ev_feed_event (EV_A_ w, EV_STAT);
2614 }
1785} 2615}
1786 2616
1787void 2617void
1788ev_stat_start (EV_P_ ev_stat *w) 2618ev_stat_start (EV_P_ ev_stat *w)
1789{ 2619{
… …
1794 memset (&w->prev, 0, sizeof (ev_statdata)); 2624 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata)); 2625 memset (&w->attr, 0, sizeof (ev_statdata));
1796 2626
1797 ev_stat_stat (EV_A_ w); 2627 ev_stat_stat (EV_A_ w);
1798 2628
2629 if (w->interval < MIN_STAT_INTERVAL)
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w)); 2633 ev_set_priority (&w->timer, ev_priority (w));
2634
2635#if EV_USE_INOTIFY
2636 infy_init (EV_A);
2637
2638 if (fs_fd >= 0)
2639 infy_add (EV_A_ w);
2640 else
2641#endif
1801 ev_timer_start (EV_A_ &w->timer); 2642 ev_timer_start (EV_A_ &w->timer);
1802 2643
1803 ev_start (EV_A_ (W)w, 1); 2644 ev_start (EV_A_ (W)w, 1);
2645
2646 EV_FREQUENT_CHECK;
1804} 2647}
1805 2648
1806void 2649void
1807ev_stat_stop (EV_P_ ev_stat *w) 2650ev_stat_stop (EV_P_ ev_stat *w)
1808{ 2651{
1809 ev_clear_pending (EV_A_ (W)w); 2652 clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2653 if (expect_false (!ev_is_active (w)))
1811 return; 2654 return;
1812 2655
2656 EV_FREQUENT_CHECK;
2657
2658#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w);
2660#endif
1813 ev_timer_stop (EV_A_ &w->timer); 2661 ev_timer_stop (EV_A_ &w->timer);
1814 2662
1815 ev_stop (EV_A_ (W)w); 2663 ev_stop (EV_A_ (W)w);
2664
2665 EV_FREQUENT_CHECK;
2666}
2667#endif
2668
2669#if EV_IDLE_ENABLE
2670void
2671ev_idle_start (EV_P_ ev_idle *w)
2672{
2673 if (expect_false (ev_is_active (w)))
2674 return;
2675
2676 pri_adjust (EV_A_ (W)w);
2677
2678 EV_FREQUENT_CHECK;
2679
2680 {
2681 int active = ++idlecnt [ABSPRI (w)];
2682
2683 ++idleall;
2684 ev_start (EV_A_ (W)w, active);
2685
2686 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2687 idles [ABSPRI (w)][active - 1] = w;
2688 }
2689
2690 EV_FREQUENT_CHECK;
2691}
2692
2693void
2694ev_idle_stop (EV_P_ ev_idle *w)
2695{
2696 clear_pending (EV_A_ (W)w);
2697 if (expect_false (!ev_is_active (w)))
2698 return;
2699
2700 EV_FREQUENT_CHECK;
2701
2702 {
2703 int active = ev_active (w);
2704
2705 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2706 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2707
2708 ev_stop (EV_A_ (W)w);
2709 --idleall;
2710 }
2711
2712 EV_FREQUENT_CHECK;
2713}
2714#endif
2715
2716void
2717ev_prepare_start (EV_P_ ev_prepare *w)
2718{
2719 if (expect_false (ev_is_active (w)))
2720 return;
2721
2722 EV_FREQUENT_CHECK;
2723
2724 ev_start (EV_A_ (W)w, ++preparecnt);
2725 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2726 prepares [preparecnt - 1] = w;
2727
2728 EV_FREQUENT_CHECK;
2729}
2730
2731void
2732ev_prepare_stop (EV_P_ ev_prepare *w)
2733{
2734 clear_pending (EV_A_ (W)w);
2735 if (expect_false (!ev_is_active (w)))
2736 return;
2737
2738 EV_FREQUENT_CHECK;
2739
2740 {
2741 int active = ev_active (w);
2742
2743 prepares [active - 1] = prepares [--preparecnt];
2744 ev_active (prepares [active - 1]) = active;
2745 }
2746
2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2750}
2751
2752void
2753ev_check_start (EV_P_ ev_check *w)
2754{
2755 if (expect_false (ev_is_active (w)))
2756 return;
2757
2758 EV_FREQUENT_CHECK;
2759
2760 ev_start (EV_A_ (W)w, ++checkcnt);
2761 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2762 checks [checkcnt - 1] = w;
2763
2764 EV_FREQUENT_CHECK;
2765}
2766
2767void
2768ev_check_stop (EV_P_ ev_check *w)
2769{
2770 clear_pending (EV_A_ (W)w);
2771 if (expect_false (!ev_is_active (w)))
2772 return;
2773
2774 EV_FREQUENT_CHECK;
2775
2776 {
2777 int active = ev_active (w);
2778
2779 checks [active - 1] = checks [--checkcnt];
2780 ev_active (checks [active - 1]) = active;
2781 }
2782
2783 ev_stop (EV_A_ (W)w);
2784
2785 EV_FREQUENT_CHECK;
2786}
2787
2788#if EV_EMBED_ENABLE
2789void noinline
2790ev_embed_sweep (EV_P_ ev_embed *w)
2791{
2792 ev_loop (w->other, EVLOOP_NONBLOCK);
2793}
2794
2795static void
2796embed_io_cb (EV_P_ ev_io *io, int revents)
2797{
2798 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2799
2800 if (ev_cb (w))
2801 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2802 else
2803 ev_loop (w->other, EVLOOP_NONBLOCK);
2804}
2805
2806static void
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810
2811 {
2812 struct ev_loop *loop = w->other;
2813
2814 while (fdchangecnt)
2815 {
2816 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 }
2819 }
2820}
2821
2822#if 0
2823static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{
2826 ev_idle_stop (EV_A_ idle);
2827}
2828#endif
2829
2830void
2831ev_embed_start (EV_P_ ev_embed *w)
2832{
2833 if (expect_false (ev_is_active (w)))
2834 return;
2835
2836 {
2837 struct ev_loop *loop = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 }
2841
2842 EV_FREQUENT_CHECK;
2843
2844 ev_set_priority (&w->io, ev_priority (w));
2845 ev_io_start (EV_A_ &w->io);
2846
2847 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare);
2850
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852
2853 ev_start (EV_A_ (W)w, 1);
2854
2855 EV_FREQUENT_CHECK;
2856}
2857
2858void
2859ev_embed_stop (EV_P_ ev_embed *w)
2860{
2861 clear_pending (EV_A_ (W)w);
2862 if (expect_false (!ev_is_active (w)))
2863 return;
2864
2865 EV_FREQUENT_CHECK;
2866
2867 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare);
2869
2870 ev_stop (EV_A_ (W)w);
2871
2872 EV_FREQUENT_CHECK;
2873}
2874#endif
2875
2876#if EV_FORK_ENABLE
2877void
2878ev_fork_start (EV_P_ ev_fork *w)
2879{
2880 if (expect_false (ev_is_active (w)))
2881 return;
2882
2883 EV_FREQUENT_CHECK;
2884
2885 ev_start (EV_A_ (W)w, ++forkcnt);
2886 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2887 forks [forkcnt - 1] = w;
2888
2889 EV_FREQUENT_CHECK;
2890}
2891
2892void
2893ev_fork_stop (EV_P_ ev_fork *w)
2894{
2895 clear_pending (EV_A_ (W)w);
2896 if (expect_false (!ev_is_active (w)))
2897 return;
2898
2899 EV_FREQUENT_CHECK;
2900
2901 {
2902 int active = ev_active (w);
2903
2904 forks [active - 1] = forks [--forkcnt];
2905 ev_active (forks [active - 1]) = active;
2906 }
2907
2908 ev_stop (EV_A_ (W)w);
2909
2910 EV_FREQUENT_CHECK;
2911}
2912#endif
2913
2914#if EV_ASYNC_ENABLE
2915void
2916ev_async_start (EV_P_ ev_async *w)
2917{
2918 if (expect_false (ev_is_active (w)))
2919 return;
2920
2921 evpipe_init (EV_A);
2922
2923 EV_FREQUENT_CHECK;
2924
2925 ev_start (EV_A_ (W)w, ++asynccnt);
2926 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2927 asyncs [asynccnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2930}
2931
2932void
2933ev_async_stop (EV_P_ ev_async *w)
2934{
2935 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w)))
2937 return;
2938
2939 EV_FREQUENT_CHECK;
2940
2941 {
2942 int active = ev_active (w);
2943
2944 asyncs [active - 1] = asyncs [--asynccnt];
2945 ev_active (asyncs [active - 1]) = active;
2946 }
2947
2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2951}
2952
2953void
2954ev_async_send (EV_P_ ev_async *w)
2955{
2956 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync);
1816} 2958}
1817#endif 2959#endif
1818 2960
1819/*****************************************************************************/ 2961/*****************************************************************************/
1820 2962
… …
1878 ev_timer_set (&once->to, timeout, 0.); 3020 ev_timer_set (&once->to, timeout, 0.);
1879 ev_timer_start (EV_A_ &once->to); 3021 ev_timer_start (EV_A_ &once->to);
1880 } 3022 }
1881} 3023}
1882 3024
3025#if EV_MULTIPLICITY
3026 #include "ev_wrap.h"
3027#endif
3028
1883#ifdef __cplusplus 3029#ifdef __cplusplus
1884} 3030}
1885#endif 3031#endif
1886 3032

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