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Comparing libev/ev.c (file contents):
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC vs.
Revision 1.253 by root, Sat May 31 03:13:27 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>
… …
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>
114 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <unistd.h>
117# include <sys/time.h> 155# include <sys/time.h>
118# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
119#else 158#else
120# define WIN32_LEAN_AND_MEAN 159# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 160# include <windows.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 static inline 333# define noinline __attribute__ ((noinline))
193#else 334#else
194# define expect(expr,value) (expr) 335# define expect(expr,value) (expr)
195# define inline static 336# define noinline
337# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
338# define inline
339# endif
196#endif 340#endif
197 341
198#define expect_false(expr) expect ((expr) != 0, 0) 342#define expect_false(expr) expect ((expr) != 0, 0)
199#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
200 351
201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203 354
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 355#define EMPTY /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 356#define EMPTY2(a,b) /* used to suppress some warnings */
206 357
207typedef ev_watcher *W; 358typedef ev_watcher *W;
208typedef ev_watcher_list *WL; 359typedef ev_watcher_list *WL;
209typedef ev_watcher_time *WT; 360typedef ev_watcher_time *WT;
210 361
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 */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369#endif
212 370
213#ifdef _WIN32 371#ifdef _WIN32
214# include "ev_win32.c" 372# include "ev_win32.c"
215#endif 373#endif
216 374
217/*****************************************************************************/ 375/*****************************************************************************/
218 376
219static void (*syserr_cb)(const char *msg); 377static void (*syserr_cb)(const char *msg);
220 378
379void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 380ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 381{
223 syserr_cb = cb; 382 syserr_cb = cb;
224} 383}
225 384
226static void 385static void noinline
227syserr (const char *msg) 386syserr (const char *msg)
228{ 387{
229 if (!msg) 388 if (!msg)
230 msg = "(libev) system error"; 389 msg = "(libev) system error";
231 390
… …
236 perror (msg); 395 perror (msg);
237 abort (); 396 abort ();
238 } 397 }
239} 398}
240 399
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
241static void *(*alloc)(void *ptr, long size); 415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
242 416
417void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 418ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 419{
245 alloc = cb; 420 alloc = cb;
246} 421}
247 422
248static void * 423inline_speed void *
249ev_realloc (void *ptr, long size) 424ev_realloc (void *ptr, long size)
250{ 425{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 426 ptr = alloc (ptr, size);
252 427
253 if (!ptr && size) 428 if (!ptr && size)
254 { 429 {
255 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
256 abort (); 431 abort ();
… …
277typedef struct 452typedef struct
278{ 453{
279 W w; 454 W w;
280 int events; 455 int events;
281} 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
282 483
283#if EV_MULTIPLICITY 484#if EV_MULTIPLICITY
284 485
285 struct ev_loop 486 struct ev_loop
286 { 487 {
… …
320 gettimeofday (&tv, 0); 521 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 522 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 523#endif
323} 524}
324 525
325inline ev_tstamp 526ev_tstamp inline_size
326get_clock (void) 527get_clock (void)
327{ 528{
328#if EV_USE_MONOTONIC 529#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 530 if (expect_true (have_monotonic))
330 { 531 {
… …
343{ 544{
344 return ev_rt_now; 545 return ev_rt_now;
345} 546}
346#endif 547#endif
347 548
348#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}
349 605
350#define array_needsize(type,base,cur,cnt,init) \ 606#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 607 if (expect_false ((cnt) > (cur))) \
352 { \ 608 { \
353 int newcnt = cur; \ 609 int ocur_ = (cur); \
354 do \ 610 (base) = (type *)array_realloc \
355 { \ 611 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 612 init ((base) + (ocur_), (cur) - ocur_); \
357 } \
358 while ((cnt) > newcnt); \
359 \
360 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361 init (base + cur, newcnt - cur); \
362 cur = newcnt; \
363 } 613 }
364 614
615#if 0
365#define array_slim(type,stem) \ 616#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 617 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 618 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 619 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 620 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 622 }
623#endif
372 624
373#define array_free(stem, idx) \ 625#define array_free(stem, idx) \
374 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;
375 627
376/*****************************************************************************/ 628/*****************************************************************************/
377 629
378static void 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}
655
656/*****************************************************************************/
657
658void inline_size
379anfds_init (ANFD *base, int count) 659anfds_init (ANFD *base, int count)
380{ 660{
381 while (count--) 661 while (count--)
382 { 662 {
383 base->head = 0; 663 base->head = 0;
… …
386 666
387 ++base; 667 ++base;
388 } 668 }
389} 669}
390 670
391void 671void inline_speed
392ev_feed_event (EV_P_ void *w, int revents)
393{
394 W w_ = (W)w;
395
396 if (expect_false (w_->pending))
397 {
398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399 return;
400 }
401
402 w_->pending = ++pendingcnt [ABSPRI (w_)];
403 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406}
407
408static void
409queue_events (EV_P_ W *events, int eventcnt, int type)
410{
411 int i;
412
413 for (i = 0; i < eventcnt; ++i)
414 ev_feed_event (EV_A_ events [i], type);
415}
416
417inline void
418fd_event (EV_P_ int fd, int revents) 672fd_event (EV_P_ int fd, int revents)
419{ 673{
420 ANFD *anfd = anfds + fd; 674 ANFD *anfd = anfds + fd;
421 ev_io *w; 675 ev_io *w;
422 676
… …
430} 684}
431 685
432void 686void
433ev_feed_fd_event (EV_P_ int fd, int revents) 687ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 688{
689 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 690 fd_event (EV_A_ fd, revents);
436} 691}
437 692
438/*****************************************************************************/ 693void inline_size
439
440inline void
441fd_reify (EV_P) 694fd_reify (EV_P)
442{ 695{
443 int i; 696 int i;
444 697
445 for (i = 0; i < fdchangecnt; ++i) 698 for (i = 0; i < fdchangecnt; ++i)
446 { 699 {
447 int fd = fdchanges [i]; 700 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 701 ANFD *anfd = anfds + fd;
449 ev_io *w; 702 ev_io *w;
450 703
451 int events = 0; 704 unsigned char events = 0;
452 705
453 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)
454 events |= w->events; 707 events |= (unsigned char)w->events;
455 708
456#if EV_SELECT_IS_WINSOCKET 709#if EV_SELECT_IS_WINSOCKET
457 if (events) 710 if (events)
458 { 711 {
459 unsigned long argp; 712 unsigned long argp;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
460 anfd->handle = _get_osfhandle (fd); 716 anfd->handle = _get_osfhandle (fd);
717 #endif
461 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, &argp) == 0));
462 } 719 }
463#endif 720#endif
464 721
722 {
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
465 anfd->reify = 0; 726 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 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 }
469 } 732 }
470 733
471 fdchangecnt = 0; 734 fdchangecnt = 0;
472} 735}
473 736
474static void 737void inline_size
475fd_change (EV_P_ int fd) 738fd_change (EV_P_ int fd, int flags)
476{ 739{
477 if (expect_false (anfds [fd].reify)) 740 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 741 anfds [fd].reify |= flags;
481 742
743 if (expect_true (!reify))
744 {
482 ++fdchangecnt; 745 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 747 fdchanges [fdchangecnt - 1] = fd;
748 }
485} 749}
486 750
487static void 751void inline_speed
488fd_kill (EV_P_ int fd) 752fd_kill (EV_P_ int fd)
489{ 753{
490 ev_io *w; 754 ev_io *w;
491 755
492 while ((w = (ev_io *)anfds [fd].head)) 756 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 758 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 760 }
497} 761}
498 762
499inline int 763int inline_size
500fd_valid (int fd) 764fd_valid (int fd)
501{ 765{
502#ifdef _WIN32 766#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 767 return _get_osfhandle (fd) != -1;
504#else 768#else
505 return fcntl (fd, F_GETFD) != -1; 769 return fcntl (fd, F_GETFD) != -1;
506#endif 770#endif
507} 771}
508 772
509/* called on EBADF to verify fds */ 773/* called on EBADF to verify fds */
510static void 774static void noinline
511fd_ebadf (EV_P) 775fd_ebadf (EV_P)
512{ 776{
513 int fd; 777 int fd;
514 778
515 for (fd = 0; fd < anfdmax; ++fd) 779 for (fd = 0; fd < anfdmax; ++fd)
… …
517 if (!fd_valid (fd) == -1 && errno == EBADF) 781 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 782 fd_kill (EV_A_ fd);
519} 783}
520 784
521/* 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 */
522static void 786static void noinline
523fd_enomem (EV_P) 787fd_enomem (EV_P)
524{ 788{
525 int fd; 789 int fd;
526 790
527 for (fd = anfdmax; fd--; ) 791 for (fd = anfdmax; fd--; )
… …
531 return; 795 return;
532 } 796 }
533} 797}
534 798
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 799/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 800static void noinline
537fd_rearm_all (EV_P) 801fd_rearm_all (EV_P)
538{ 802{
539 int fd; 803 int fd;
540 804
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 805 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 806 if (anfds [fd].events)
544 { 807 {
545 anfds [fd].events = 0; 808 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 809 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 810 }
548} 811}
549 812
550/*****************************************************************************/ 813/*****************************************************************************/
551 814
552static void 815/*
553upheap (WT *heap, int k) 816 * the heap functions want a real array index. array index 0 uis guaranteed to not
554{ 817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
555 WT w = heap [k]; 818 * the branching factor of the d-tree.
819 */
556 820
557 while (k && heap [k >> 1]->at > w->at) 821/*
558 { 822 * at the moment we allow libev the luxury of two heaps,
559 heap [k] = heap [k >> 1]; 823 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
560 ((W)heap [k])->active = k + 1; 824 * which is more cache-efficient.
561 k >>= 1; 825 * the difference is about 5% with 50000+ watchers.
562 } 826 */
827#if EV_USE_4HEAP
563 828
564 heap [k] = w; 829#define DHEAP 4
565 ((W)heap [k])->active = k + 1; 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))
566 833
567} 834/* away from the root */
568 835void inline_speed
569static void
570downheap (WT *heap, int N, int k) 836downheap (ANHE *heap, int N, int k)
571{ 837{
572 WT w = heap [k]; 838 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0;
573 840
574 while (k < (N >> 1)) 841 for (;;)
575 { 842 {
576 int j = k << 1; 843 ev_tstamp minat;
844 ANHE *minpos;
845 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
577 846
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 847 /* find minimum child */
848 if (expect_true (pos + DHEAP - 1 < E))
579 ++j; 849 {
580 850 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
581 if (w->at <= heap [j]->at) 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
582 break; 863 break;
583 864
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
874 heap [k] = he;
875 ev_active (ANHE_w (he)) = k;
876}
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 */
885void inline_speed
886downheap (ANHE *heap, int N, int k)
887{
888 ANHE he = heap [k];
889
890 for (;;)
891 {
892 int c = k << 1;
893
894 if (c > N + HEAP0 - 1)
895 break;
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
584 heap [k] = heap [j]; 903 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 904 ev_active (ANHE_w (heap [k])) = k;
905
586 k = j; 906 k = c;
587 } 907 }
588 908
589 heap [k] = w; 909 heap [k] = he;
590 ((W)heap [k])->active = k + 1; 910 ev_active (ANHE_w (he)) = k;
591} 911}
912#endif
592 913
593inline void 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;
934}
935
936void inline_size
594adjustheap (WT *heap, int N, int k) 937adjustheap (ANHE *heap, int N, int k)
595{ 938{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
596 upheap (heap, k); 940 upheap (heap, k);
941 else
597 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);
598} 955}
599 956
600/*****************************************************************************/ 957/*****************************************************************************/
601 958
602typedef struct 959typedef struct
603{ 960{
604 WL head; 961 WL head;
605 sig_atomic_t volatile gotsig; 962 EV_ATOMIC_T gotsig;
606} ANSIG; 963} ANSIG;
607 964
608static ANSIG *signals; 965static ANSIG *signals;
609static int signalmax; 966static int signalmax;
610 967
611static int sigpipe [2]; 968static EV_ATOMIC_T gotsig;
612static sig_atomic_t volatile gotsig;
613static ev_io sigev;
614 969
615static void 970void inline_size
616signals_init (ANSIG *base, int count) 971signals_init (ANSIG *base, int count)
617{ 972{
618 while (count--) 973 while (count--)
619 { 974 {
620 base->head = 0; 975 base->head = 0;
… …
622 977
623 ++base; 978 ++base;
624 } 979 }
625} 980}
626 981
627static void 982/*****************************************************************************/
628sighandler (int signum)
629{
630#if _WIN32
631 signal (signum, sighandler);
632#endif
633 983
634 signals [signum - 1].gotsig = 1; 984void inline_speed
635
636 if (!gotsig)
637 {
638 int old_errno = errno;
639 gotsig = 1;
640 write (sigpipe [1], &signum, 1);
641 errno = old_errno;
642 }
643}
644
645void
646ev_feed_signal_event (EV_P_ int signum)
647{
648 WL w;
649
650#if EV_MULTIPLICITY
651 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
652#endif
653
654 --signum;
655
656 if (signum < 0 || signum >= signalmax)
657 return;
658
659 signals [signum].gotsig = 0;
660
661 for (w = signals [signum].head; w; w = w->next)
662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
663}
664
665static void
666sigcb (EV_P_ ev_io *iow, int revents)
667{
668 int signum;
669
670 read (sigpipe [0], &revents, 1);
671 gotsig = 0;
672
673 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1);
676}
677
678static void
679fd_intern (int fd) 985fd_intern (int fd)
680{ 986{
681#ifdef _WIN32 987#ifdef _WIN32
682 int arg = 1; 988 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 991 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 992 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 993#endif
688} 994}
689 995
996static void noinline
997evpipe_init (EV_P)
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
1014 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ);
1017 }
1018
1019 ev_io_start (EV_A_ &pipeev);
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
690static void 1047static void
691siginit (EV_P) 1048pipecb (EV_P_ ev_io *iow, int revents)
692{ 1049{
693 fd_intern (sigpipe [0]); 1050#if EV_USE_EVENTFD
694 fd_intern (sigpipe [1]); 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 }
695 1062
696 ev_io_set (&sigev, sigpipe [0], EV_READ); 1063 if (gotsig && ev_is_default_loop (EV_A))
697 ev_io_start (EV_A_ &sigev); 1064 {
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 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
699} 1087}
700 1088
701/*****************************************************************************/ 1089/*****************************************************************************/
702 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
703static ev_child *childs [PID_HASHSIZE]; 1128static WL childs [EV_PID_HASHSIZE];
704 1129
705#ifndef _WIN32 1130#ifndef _WIN32
706 1131
707static 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}
708 1156
709#ifndef WCONTINUED 1157#ifndef WCONTINUED
710# define WCONTINUED 0 1158# define WCONTINUED 0
711#endif 1159#endif
712 1160
713static void 1161static void
714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715{
716 ev_child *w;
717
718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719 if (w->pid == pid || !w->pid)
720 {
721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722 w->rpid = pid;
723 w->rstatus = status;
724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
725 }
726}
727
728static void
729childcb (EV_P_ ev_signal *sw, int revents) 1162childcb (EV_P_ ev_signal *sw, int revents)
730{ 1163{
731 int pid, status; 1164 int pid, status;
732 1165
1166 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1167 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 1168 if (!WCONTINUED
1169 || errno != EINVAL
1170 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1171 return;
1172
735 /* 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 */
736 /* 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 */
737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 1176
739 child_reap (EV_A_ sw, pid, pid, status); 1177 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1)
740 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 */
741 }
742} 1180}
743 1181
744#endif 1182#endif
745 1183
746/*****************************************************************************/ 1184/*****************************************************************************/
… …
772{ 1210{
773 return EV_VERSION_MINOR; 1211 return EV_VERSION_MINOR;
774} 1212}
775 1213
776/* return true if we are running with elevated privileges and should ignore env variables */ 1214/* return true if we are running with elevated privileges and should ignore env variables */
777static int 1215int inline_size
778enable_secure (void) 1216enable_secure (void)
779{ 1217{
780#ifdef _WIN32 1218#ifdef _WIN32
781 return 0; 1219 return 0;
782#else 1220#else
… …
818} 1256}
819 1257
820unsigned int 1258unsigned int
821ev_embeddable_backends (void) 1259ev_embeddable_backends (void)
822{ 1260{
823 return EVBACKEND_EPOLL 1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
824 | EVBACKEND_KQUEUE 1262
825 | 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;
826} 1268}
827 1269
828unsigned int 1270unsigned int
829ev_backend (EV_P) 1271ev_backend (EV_P)
830{ 1272{
831 return backend; 1273 return backend;
832} 1274}
833 1275
834static 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
835loop_init (EV_P_ unsigned int flags) 1295loop_init (EV_P_ unsigned int flags)
836{ 1296{
837 if (!backend) 1297 if (!backend)
838 { 1298 {
839#if EV_USE_MONOTONIC 1299#if EV_USE_MONOTONIC
… …
842 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
843 have_monotonic = 1; 1303 have_monotonic = 1;
844 } 1304 }
845#endif 1305#endif
846 1306
847 ev_rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1308 mn_now = get_clock ();
849 now_floor = mn_now; 1309 now_floor = mn_now;
850 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
851 1326
852 if (!(flags & EVFLAG_NOENV) 1327 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1328 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1329 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1330 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1331
857 if (!(flags & 0x0000ffffUL)) 1332 if (!(flags & 0x0000ffffU))
858 flags |= ev_recommended_backends (); 1333 flags |= ev_recommended_backends ();
859 1334
860 backend = 0;
861#if EV_USE_PORT 1335#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1337#endif
864#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1339 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
872#endif 1346#endif
873#if EV_USE_SELECT 1347#if EV_USE_SELECT
874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
875#endif 1349#endif
876 1350
877 ev_init (&sigev, sigcb); 1351 ev_init (&pipeev, pipecb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1352 ev_set_priority (&pipeev, EV_MAXPRI);
879 } 1353 }
880} 1354}
881 1355
882static void 1356static void noinline
883loop_destroy (EV_P) 1357loop_destroy (EV_P)
884{ 1358{
885 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);
886 1385
887#if EV_USE_PORT 1386#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1387 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1388#endif
890#if EV_USE_KQUEUE 1389#if EV_USE_KQUEUE
… …
899#if EV_USE_SELECT 1398#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1399 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1400#endif
902 1401
903 for (i = NUMPRI; i--; ) 1402 for (i = NUMPRI; i--; )
1403 {
904 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;
905 1411
906 /* have to use the microsoft-never-gets-it-right macro */ 1412 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1413 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1414 array_free (timer, EMPTY);
909#if EV_PERIODICS 1415#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1416 array_free (periodic, EMPTY);
911#endif 1417#endif
1418#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1419 array_free (fork, EMPTY);
1420#endif
913 array_free (prepare, EMPTY0); 1421 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1422 array_free (check, EMPTY);
1423#if EV_ASYNC_ENABLE
1424 array_free (async, EMPTY);
1425#endif
915 1426
916 backend = 0; 1427 backend = 0;
917} 1428}
918 1429
919static void 1430#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P);
1432#endif
1433
1434void inline_size
920loop_fork (EV_P) 1435loop_fork (EV_P)
921{ 1436{
922#if EV_USE_PORT 1437#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1439#endif
… …
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1441 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1442#endif
928#if EV_USE_EPOLL 1443#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1444 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
930#endif 1445#endif
1446#if EV_USE_INOTIFY
1447 infy_fork (EV_A);
1448#endif
931 1449
932 if (ev_is_active (&sigev)) 1450 if (ev_is_active (&pipeev))
933 { 1451 {
934 /* 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
935 1458
936 ev_ref (EV_A); 1459 ev_ref (EV_A);
937 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 {
938 close (sigpipe [0]); 1469 close (evpipe [0]);
939 close (sigpipe [1]); 1470 close (evpipe [1]);
1471 }
940 1472
941 while (pipe (sigpipe))
942 syserr ("(libev) error creating pipe");
943
944 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);
945 } 1476 }
946 1477
947 postfork = 0; 1478 postfork = 0;
948} 1479}
949 1480
950#if EV_MULTIPLICITY 1481#if EV_MULTIPLICITY
1482
951struct ev_loop * 1483struct ev_loop *
952ev_loop_new (unsigned int flags) 1484ev_loop_new (unsigned int flags)
953{ 1485{
954 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));
955 1487
… …
971} 1503}
972 1504
973void 1505void
974ev_loop_fork (EV_P) 1506ev_loop_fork (EV_P)
975{ 1507{
976 postfork = 1; 1508 postfork = 1; /* must be in line with ev_default_fork */
977} 1509}
978 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)
979#endif 1606# endif
1607#endif
1608}
1609
1610#endif /* multiplicity */
980 1611
981#if EV_MULTIPLICITY 1612#if EV_MULTIPLICITY
982struct ev_loop * 1613struct ev_loop *
983ev_default_loop_init (unsigned int flags) 1614ev_default_loop_init (unsigned int flags)
984#else 1615#else
985int 1616int
986ev_default_loop (unsigned int flags) 1617ev_default_loop (unsigned int flags)
987#endif 1618#endif
988{ 1619{
989 if (sigpipe [0] == sigpipe [1])
990 if (pipe (sigpipe))
991 return 0;
992
993 if (!ev_default_loop_ptr) 1620 if (!ev_default_loop_ptr)
994 { 1621 {
995#if EV_MULTIPLICITY 1622#if EV_MULTIPLICITY
996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
997#else 1624#else
… …
1000 1627
1001 loop_init (EV_A_ flags); 1628 loop_init (EV_A_ flags);
1002 1629
1003 if (ev_backend (EV_A)) 1630 if (ev_backend (EV_A))
1004 { 1631 {
1005 siginit (EV_A);
1006
1007#ifndef _WIN32 1632#ifndef _WIN32
1008 ev_signal_init (&childev, childcb, SIGCHLD); 1633 ev_signal_init (&childev, childcb, SIGCHLD);
1009 ev_set_priority (&childev, EV_MAXPRI); 1634 ev_set_priority (&childev, EV_MAXPRI);
1010 ev_signal_start (EV_A_ &childev); 1635 ev_signal_start (EV_A_ &childev);
1011 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1636 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1028#ifndef _WIN32 1653#ifndef _WIN32
1029 ev_ref (EV_A); /* child watcher */ 1654 ev_ref (EV_A); /* child watcher */
1030 ev_signal_stop (EV_A_ &childev); 1655 ev_signal_stop (EV_A_ &childev);
1031#endif 1656#endif
1032 1657
1033 ev_ref (EV_A); /* signal watcher */
1034 ev_io_stop (EV_A_ &sigev);
1035
1036 close (sigpipe [0]); sigpipe [0] = 0;
1037 close (sigpipe [1]); sigpipe [1] = 0;
1038
1039 loop_destroy (EV_A); 1658 loop_destroy (EV_A);
1040} 1659}
1041 1660
1042void 1661void
1043ev_default_fork (void) 1662ev_default_fork (void)
… …
1045#if EV_MULTIPLICITY 1664#if EV_MULTIPLICITY
1046 struct ev_loop *loop = ev_default_loop_ptr; 1665 struct ev_loop *loop = ev_default_loop_ptr;
1047#endif 1666#endif
1048 1667
1049 if (backend) 1668 if (backend)
1050 postfork = 1; 1669 postfork = 1; /* must be in line with ev_loop_fork */
1051} 1670}
1052 1671
1053/*****************************************************************************/ 1672/*****************************************************************************/
1054 1673
1055static int 1674void
1056any_pending (EV_P) 1675ev_invoke (EV_P_ void *w, int revents)
1057{ 1676{
1058 int pri; 1677 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1678}
1066 1679
1067inline void 1680void inline_speed
1068call_pending (EV_P) 1681call_pending (EV_P)
1069{ 1682{
1070 int pri; 1683 int pri;
1071 1684
1072 for (pri = NUMPRI; pri--; ) 1685 for (pri = NUMPRI; pri--; )
… …
1074 { 1687 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1689
1077 if (expect_true (p->w)) 1690 if (expect_true (p->w))
1078 { 1691 {
1079 assert (("non-pending watcher on pending list", p->w->pending)); 1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1080 1693
1081 p->w->pending = 0; 1694 p->w->pending = 0;
1082 EV_CB_INVOKE (p->w, p->events); 1695 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK;
1083 } 1697 }
1084 } 1698 }
1085} 1699}
1086 1700
1087inline void 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
1724void inline_size
1088timers_reify (EV_P) 1725timers_reify (EV_P)
1089{ 1726{
1727 EV_FREQUENT_CHECK;
1728
1090 while (timercnt && ((WT)timers [0])->at <= mn_now) 1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1091 { 1730 {
1092 ev_timer *w = timers [0]; 1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1093 1732
1094 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1095 1734
1096 /* first reschedule or stop timer */ 1735 /* first reschedule or stop timer */
1097 if (w->repeat) 1736 if (w->repeat)
1098 { 1737 {
1738 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now;
1741
1099 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.));
1100 1743
1101 ((WT)w)->at += w->repeat; 1744 ANHE_at_cache (timers [HEAP0]);
1102 if (((WT)w)->at < mn_now)
1103 ((WT)w)->at = mn_now;
1104
1105 downheap ((WT *)timers, timercnt, 0); 1745 downheap (timers, timercnt, HEAP0);
1106 } 1746 }
1107 else 1747 else
1108 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1109 1749
1750 EV_FREQUENT_CHECK;
1110 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1111 } 1752 }
1112} 1753}
1113 1754
1114#if EV_PERIODICS 1755#if EV_PERIODIC_ENABLE
1115inline void 1756void inline_size
1116periodics_reify (EV_P) 1757periodics_reify (EV_P)
1117{ 1758{
1759 EV_FREQUENT_CHECK;
1760
1118 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1119 { 1762 {
1120 ev_periodic *w = periodics [0]; 1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1121 1764
1122 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1123 1766
1124 /* first reschedule or stop timer */ 1767 /* first reschedule or stop timer */
1125 if (w->reschedule_cb) 1768 if (w->reschedule_cb)
1126 { 1769 {
1127 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771
1128 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]);
1129 downheap ((WT *)periodics, periodiccnt, 0); 1775 downheap (periodics, periodiccnt, HEAP0);
1130 } 1776 }
1131 else if (w->interval) 1777 else if (w->interval)
1132 { 1778 {
1133 ((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;
1134 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]);
1135 downheap ((WT *)periodics, periodiccnt, 0); 1794 downheap (periodics, periodiccnt, HEAP0);
1136 } 1795 }
1137 else 1796 else
1138 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1139 1798
1799 EV_FREQUENT_CHECK;
1140 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1141 } 1801 }
1142} 1802}
1143 1803
1144static void 1804static void noinline
1145periodics_reschedule (EV_P) 1805periodics_reschedule (EV_P)
1146{ 1806{
1147 int i; 1807 int i;
1148 1808
1149 /* adjust periodics after time jump */ 1809 /* adjust periodics after time jump */
1150 for (i = 0; i < periodiccnt; ++i) 1810 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1151 { 1811 {
1152 ev_periodic *w = periodics [i]; 1812 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1153 1813
1154 if (w->reschedule_cb) 1814 if (w->reschedule_cb)
1155 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1156 else if (w->interval) 1816 else if (w->interval)
1157 ((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))
1158 } 1833 {
1834 ev_tstamp odiff = rtmn_diff;
1159 1835
1160 /* now rebuild the heap */
1161 for (i = periodiccnt >> 1; i--; )
1162 downheap ((WT *)periodics, periodiccnt, i);
1163}
1164#endif
1165
1166inline int
1167time_update_monotonic (EV_P)
1168{
1169 mn_now = get_clock (); 1836 mn_now = get_clock ();
1170 1837
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1839 /* interpolate in the meantime */
1171 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1840 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1172 { 1841 {
1173 ev_rt_now = rtmn_diff + mn_now; 1842 ev_rt_now = rtmn_diff + mn_now;
1174 return 0; 1843 return;
1175 } 1844 }
1176 else 1845
1177 {
1178 now_floor = mn_now; 1846 now_floor = mn_now;
1179 ev_rt_now = ev_time (); 1847 ev_rt_now = ev_time ();
1180 return 1;
1181 }
1182}
1183 1848
1184inline void 1849 /* loop a few times, before making important decisions.
1185time_update (EV_P) 1850 * on the choice of "4": one iteration isn't enough,
1186{ 1851 * in case we get preempted during the calls to
1187 int i; 1852 * ev_time and get_clock. a second call is almost guaranteed
1188 1853 * to succeed in that case, though. and looping a few more times
1189#if EV_USE_MONOTONIC 1854 * doesn't hurt either as we only do this on time-jumps or
1190 if (expect_true (have_monotonic)) 1855 * in the unlikely event of having been preempted here.
1191 { 1856 */
1192 if (time_update_monotonic (EV_A)) 1857 for (i = 4; --i; )
1193 { 1858 {
1194 ev_tstamp odiff = rtmn_diff; 1859 rtmn_diff = ev_rt_now - mn_now;
1195 1860
1196 /* loop a few times, before making important decisions. 1861 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1197 * on the choice of "4": one iteration isn't enough, 1862 return; /* all is well */
1198 * in case we get preempted during the calls to 1863
1199 * ev_time and get_clock. a second call is almost guarenteed 1864 ev_rt_now = ev_time ();
1200 * to succeed in that case, though. and looping a few more times 1865 mn_now = get_clock ();
1201 * doesn't hurt either as we only do this on time-jumps or 1866 now_floor = mn_now;
1202 * in the unlikely event of getting preempted here. 1867 }
1203 */ 1868
1204 for (i = 4; --i; ) 1869# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A);
1871# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 }
1875 else
1876#endif
1877 {
1878 ev_rt_now = ev_time ();
1879
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 {
1882#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A);
1884#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1205 { 1887 {
1206 rtmn_diff = ev_rt_now - mn_now; 1888 ANHE *he = timers + i + HEAP0;
1207 1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1208 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1890 ANHE_at_cache (*he);
1209 return; /* all is well */
1210
1211 ev_rt_now = ev_time ();
1212 mn_now = get_clock ();
1213 now_floor = mn_now;
1214 } 1891 }
1215
1216# if EV_PERIODICS
1217 periodics_reschedule (EV_A);
1218# endif
1219 /* no timer adjustment, as the monotonic clock doesn't jump */
1220 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1221 } 1892 }
1222 }
1223 else
1224#endif
1225 {
1226 ev_rt_now = ev_time ();
1227
1228 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1229 {
1230#if EV_PERIODICS
1231 periodics_reschedule (EV_A);
1232#endif
1233
1234 /* adjust timers. this is easy, as the offset is the same for all */
1235 for (i = 0; i < timercnt; ++i)
1236 ((WT)timers [i])->at += ev_rt_now - mn_now;
1237 }
1238 1893
1239 mn_now = ev_rt_now; 1894 mn_now = ev_rt_now;
1240 } 1895 }
1241} 1896}
1242 1897
… …
1255static int loop_done; 1910static int loop_done;
1256 1911
1257void 1912void
1258ev_loop (EV_P_ int flags) 1913ev_loop (EV_P_ int flags)
1259{ 1914{
1260 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1915 loop_done = EVUNLOOP_CANCEL;
1261 ? EVUNLOOP_ONE
1262 : EVUNLOOP_CANCEL;
1263 1916
1264 while (activecnt) 1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1918
1919 do
1265 { 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
1266 /* queue check watchers (and execute them) */ 1944 /* queue prepare watchers (and execute them) */
1267 if (expect_false (preparecnt)) 1945 if (expect_false (preparecnt))
1268 { 1946 {
1269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1270 call_pending (EV_A); 1948 call_pending (EV_A);
1271 } 1949 }
1272 1950
1951 if (expect_false (!activecnt))
1952 break;
1953
1273 /* we might have forked, so reify kernel state if necessary */ 1954 /* we might have forked, so reify kernel state if necessary */
1274 if (expect_false (postfork)) 1955 if (expect_false (postfork))
1275 loop_fork (EV_A); 1956 loop_fork (EV_A);
1276 1957
1277 /* update fd-related kernel structures */ 1958 /* update fd-related kernel structures */
1278 fd_reify (EV_A); 1959 fd_reify (EV_A);
1279 1960
1280 /* calculate blocking time */ 1961 /* calculate blocking time */
1281 { 1962 {
1282 double block; 1963 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.;
1283 1965
1284 if (flags & EVLOOP_NONBLOCK || idlecnt) 1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1285 block = 0.; /* do not block at all */
1286 else
1287 { 1967 {
1288 /* update time to cancel out callback processing overhead */ 1968 /* update time to cancel out callback processing overhead */
1289#if EV_USE_MONOTONIC
1290 if (expect_true (have_monotonic))
1291 time_update_monotonic (EV_A); 1969 time_update (EV_A_ 1e100);
1292 else
1293#endif
1294 {
1295 ev_rt_now = ev_time ();
1296 mn_now = ev_rt_now;
1297 }
1298 1970
1299 block = MAX_BLOCKTIME; 1971 waittime = MAX_BLOCKTIME;
1300 1972
1301 if (timercnt) 1973 if (timercnt)
1302 { 1974 {
1303 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1304 if (block > to) block = to; 1976 if (waittime > to) waittime = to;
1305 } 1977 }
1306 1978
1307#if EV_PERIODICS 1979#if EV_PERIODIC_ENABLE
1308 if (periodiccnt) 1980 if (periodiccnt)
1309 { 1981 {
1310 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;
1311 if (block > to) block = to; 1983 if (waittime > to) waittime = to;
1312 } 1984 }
1313#endif 1985#endif
1314 1986
1315 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 }
1316 } 2000 }
1317 2001
2002 ++loop_count;
1318 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);
1319 } 2007 }
1320
1321 /* update ev_rt_now, do magic */
1322 time_update (EV_A);
1323 2008
1324 /* queue pending timers and reschedule them */ 2009 /* queue pending timers and reschedule them */
1325 timers_reify (EV_A); /* relative timers called last */ 2010 timers_reify (EV_A); /* relative timers called last */
1326#if EV_PERIODICS 2011#if EV_PERIODIC_ENABLE
1327 periodics_reify (EV_A); /* absolute timers called first */ 2012 periodics_reify (EV_A); /* absolute timers called first */
1328#endif 2013#endif
1329 2014
2015#if EV_IDLE_ENABLE
1330 /* queue idle watchers unless other events are pending */ 2016 /* queue idle watchers unless other events are pending */
1331 if (idlecnt && !any_pending (EV_A)) 2017 idle_reify (EV_A);
1332 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2018#endif
1333 2019
1334 /* queue check watchers, to be executed first */ 2020 /* queue check watchers, to be executed first */
1335 if (expect_false (checkcnt)) 2021 if (expect_false (checkcnt))
1336 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1337 2023
1338 call_pending (EV_A); 2024 call_pending (EV_A);
1339
1340 if (expect_false (loop_done))
1341 break;
1342 } 2025 }
2026 while (expect_true (
2027 activecnt
2028 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 ));
1343 2031
1344 if (loop_done == EVUNLOOP_ONE) 2032 if (loop_done == EVUNLOOP_ONE)
1345 loop_done = EVUNLOOP_CANCEL; 2033 loop_done = EVUNLOOP_CANCEL;
1346} 2034}
1347 2035
… …
1351 loop_done = how; 2039 loop_done = how;
1352} 2040}
1353 2041
1354/*****************************************************************************/ 2042/*****************************************************************************/
1355 2043
1356inline void 2044void inline_size
1357wlist_add (WL *head, WL elem) 2045wlist_add (WL *head, WL elem)
1358{ 2046{
1359 elem->next = *head; 2047 elem->next = *head;
1360 *head = elem; 2048 *head = elem;
1361} 2049}
1362 2050
1363inline void 2051void inline_size
1364wlist_del (WL *head, WL elem) 2052wlist_del (WL *head, WL elem)
1365{ 2053{
1366 while (*head) 2054 while (*head)
1367 { 2055 {
1368 if (*head == elem) 2056 if (*head == elem)
… …
1373 2061
1374 head = &(*head)->next; 2062 head = &(*head)->next;
1375 } 2063 }
1376} 2064}
1377 2065
1378inline void 2066void inline_speed
1379ev_clear_pending (EV_P_ W w) 2067clear_pending (EV_P_ W w)
1380{ 2068{
1381 if (w->pending) 2069 if (w->pending)
1382 { 2070 {
1383 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2071 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1384 w->pending = 0; 2072 w->pending = 0;
1385 } 2073 }
1386} 2074}
1387 2075
1388inline void 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
2102void inline_speed
1389ev_start (EV_P_ W w, int active) 2103ev_start (EV_P_ W w, int active)
1390{ 2104{
1391 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2105 pri_adjust (EV_A_ w);
1392 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1393
1394 w->active = active; 2106 w->active = active;
1395 ev_ref (EV_A); 2107 ev_ref (EV_A);
1396} 2108}
1397 2109
1398inline void 2110void inline_size
1399ev_stop (EV_P_ W w) 2111ev_stop (EV_P_ W w)
1400{ 2112{
1401 ev_unref (EV_A); 2113 ev_unref (EV_A);
1402 w->active = 0; 2114 w->active = 0;
1403} 2115}
1404 2116
1405/*****************************************************************************/ 2117/*****************************************************************************/
1406 2118
1407void 2119void noinline
1408ev_io_start (EV_P_ ev_io *w) 2120ev_io_start (EV_P_ ev_io *w)
1409{ 2121{
1410 int fd = w->fd; 2122 int fd = w->fd;
1411 2123
1412 if (expect_false (ev_is_active (w))) 2124 if (expect_false (ev_is_active (w)))
1413 return; 2125 return;
1414 2126
1415 assert (("ev_io_start called with negative fd", fd >= 0)); 2127 assert (("ev_io_start called with negative fd", fd >= 0));
1416 2128
2129 EV_FREQUENT_CHECK;
2130
1417 ev_start (EV_A_ (W)w, 1); 2131 ev_start (EV_A_ (W)w, 1);
1418 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1419 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2133 wlist_add (&anfds[fd].head, (WL)w);
1420 2134
1421 fd_change (EV_A_ fd); 2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1422} 2136 w->events &= ~EV_IOFDSET;
1423 2137
1424void 2138 EV_FREQUENT_CHECK;
2139}
2140
2141void noinline
1425ev_io_stop (EV_P_ ev_io *w) 2142ev_io_stop (EV_P_ ev_io *w)
1426{ 2143{
1427 ev_clear_pending (EV_A_ (W)w); 2144 clear_pending (EV_A_ (W)w);
1428 if (expect_false (!ev_is_active (w))) 2145 if (expect_false (!ev_is_active (w)))
1429 return; 2146 return;
1430 2147
1431 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));
1432 2149
2150 EV_FREQUENT_CHECK;
2151
1433 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2152 wlist_del (&anfds[w->fd].head, (WL)w);
1434 ev_stop (EV_A_ (W)w); 2153 ev_stop (EV_A_ (W)w);
1435 2154
1436 fd_change (EV_A_ w->fd); 2155 fd_change (EV_A_ w->fd, 1);
1437}
1438 2156
1439void 2157 EV_FREQUENT_CHECK;
2158}
2159
2160void noinline
1440ev_timer_start (EV_P_ ev_timer *w) 2161ev_timer_start (EV_P_ ev_timer *w)
1441{ 2162{
1442 if (expect_false (ev_is_active (w))) 2163 if (expect_false (ev_is_active (w)))
1443 return; 2164 return;
1444 2165
1445 ((WT)w)->at += mn_now; 2166 ev_at (w) += mn_now;
1446 2167
1447 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.));
1448 2169
2170 EV_FREQUENT_CHECK;
2171
2172 ++timercnt;
1449 ev_start (EV_A_ (W)w, ++timercnt); 2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1450 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2174 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1451 timers [timercnt - 1] = w; 2175 ANHE_w (timers [ev_active (w)]) = (WT)w;
1452 upheap ((WT *)timers, timercnt - 1); 2176 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w));
1453 2178
2179 EV_FREQUENT_CHECK;
2180
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1455} 2182}
1456 2183
1457void 2184void noinline
1458ev_timer_stop (EV_P_ ev_timer *w) 2185ev_timer_stop (EV_P_ ev_timer *w)
1459{ 2186{
1460 ev_clear_pending (EV_A_ (W)w); 2187 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 2188 if (expect_false (!ev_is_active (w)))
1462 return; 2189 return;
1463 2190
2191 EV_FREQUENT_CHECK;
2192
2193 {
2194 int active = ev_active (w);
2195
1464 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1465 2197
2198 --timercnt;
2199
1466 if (expect_true (((W)w)->active < timercnt--)) 2200 if (expect_true (active < timercnt + HEAP0))
1467 { 2201 {
1468 timers [((W)w)->active - 1] = timers [timercnt]; 2202 timers [active] = timers [timercnt + HEAP0];
1469 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2203 adjustheap (timers, timercnt, active);
1470 } 2204 }
2205 }
1471 2206
1472 ((WT)w)->at -= mn_now; 2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now;
1473 2210
1474 ev_stop (EV_A_ (W)w); 2211 ev_stop (EV_A_ (W)w);
1475} 2212}
1476 2213
1477void 2214void noinline
1478ev_timer_again (EV_P_ ev_timer *w) 2215ev_timer_again (EV_P_ ev_timer *w)
1479{ 2216{
2217 EV_FREQUENT_CHECK;
2218
1480 if (ev_is_active (w)) 2219 if (ev_is_active (w))
1481 { 2220 {
1482 if (w->repeat) 2221 if (w->repeat)
1483 { 2222 {
1484 ((WT)w)->at = mn_now + w->repeat; 2223 ev_at (w) = mn_now + w->repeat;
2224 ANHE_at_cache (timers [ev_active (w)]);
1485 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2225 adjustheap (timers, timercnt, ev_active (w));
1486 } 2226 }
1487 else 2227 else
1488 ev_timer_stop (EV_A_ w); 2228 ev_timer_stop (EV_A_ w);
1489 } 2229 }
1490 else if (w->repeat) 2230 else if (w->repeat)
1491 { 2231 {
1492 w->at = w->repeat; 2232 ev_at (w) = w->repeat;
1493 ev_timer_start (EV_A_ w); 2233 ev_timer_start (EV_A_ w);
1494 } 2234 }
1495}
1496 2235
2236 EV_FREQUENT_CHECK;
2237}
2238
1497#if EV_PERIODICS 2239#if EV_PERIODIC_ENABLE
1498void 2240void noinline
1499ev_periodic_start (EV_P_ ev_periodic *w) 2241ev_periodic_start (EV_P_ ev_periodic *w)
1500{ 2242{
1501 if (expect_false (ev_is_active (w))) 2243 if (expect_false (ev_is_active (w)))
1502 return; 2244 return;
1503 2245
1504 if (w->reschedule_cb) 2246 if (w->reschedule_cb)
1505 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1506 else if (w->interval) 2248 else if (w->interval)
1507 { 2249 {
1508 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.));
1509 /* 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 */
1510 ((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;
1511 } 2253 }
2254 else
2255 ev_at (w) = w->offset;
1512 2256
2257 EV_FREQUENT_CHECK;
2258
2259 ++periodiccnt;
1513 ev_start (EV_A_ (W)w, ++periodiccnt); 2260 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1514 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2261 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1515 periodics [periodiccnt - 1] = w; 2262 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1516 upheap ((WT *)periodics, periodiccnt - 1); 2263 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w));
1517 2265
2266 EV_FREQUENT_CHECK;
2267
1518 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));*/
1519} 2269}
1520 2270
1521void 2271void noinline
1522ev_periodic_stop (EV_P_ ev_periodic *w) 2272ev_periodic_stop (EV_P_ ev_periodic *w)
1523{ 2273{
1524 ev_clear_pending (EV_A_ (W)w); 2274 clear_pending (EV_A_ (W)w);
1525 if (expect_false (!ev_is_active (w))) 2275 if (expect_false (!ev_is_active (w)))
1526 return; 2276 return;
1527 2277
2278 EV_FREQUENT_CHECK;
2279
2280 {
2281 int active = ev_active (w);
2282
1528 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1529 2284
2285 --periodiccnt;
2286
1530 if (expect_true (((W)w)->active < periodiccnt--)) 2287 if (expect_true (active < periodiccnt + HEAP0))
1531 { 2288 {
1532 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2289 periodics [active] = periodics [periodiccnt + HEAP0];
1533 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2290 adjustheap (periodics, periodiccnt, active);
1534 } 2291 }
2292 }
2293
2294 EV_FREQUENT_CHECK;
1535 2295
1536 ev_stop (EV_A_ (W)w); 2296 ev_stop (EV_A_ (W)w);
1537} 2297}
1538 2298
1539void 2299void noinline
1540ev_periodic_again (EV_P_ ev_periodic *w) 2300ev_periodic_again (EV_P_ ev_periodic *w)
1541{ 2301{
1542 /* TODO: use adjustheap and recalculation */ 2302 /* TODO: use adjustheap and recalculation */
1543 ev_periodic_stop (EV_A_ w); 2303 ev_periodic_stop (EV_A_ w);
1544 ev_periodic_start (EV_A_ w); 2304 ev_periodic_start (EV_A_ w);
1545} 2305}
1546#endif 2306#endif
1547 2307
1548void 2308#ifndef SA_RESTART
2309# define SA_RESTART 0
2310#endif
2311
2312void noinline
1549ev_idle_start (EV_P_ ev_idle *w) 2313ev_signal_start (EV_P_ ev_signal *w)
1550{ 2314{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
1551 if (expect_false (ev_is_active (w))) 2318 if (expect_false (ev_is_active (w)))
1552 return; 2319 return;
1553 2320
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2322
2323 evpipe_init (EV_A);
2324
2325 EV_FREQUENT_CHECK;
2326
2327 {
2328#ifndef _WIN32
2329 sigset_t full, prev;
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
2339 }
2340
1554 ev_start (EV_A_ (W)w, ++idlecnt); 2341 ev_start (EV_A_ (W)w, 1);
1555 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2342 wlist_add (&signals [w->signum - 1].head, (WL)w);
1556 idles [idlecnt - 1] = w;
1557}
1558 2343
1559void 2344 if (!((WL)w)->next)
2345 {
2346#if _WIN32
2347 signal (w->signum, ev_sighandler);
2348#else
2349 struct sigaction sa;
2350 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0);
2354#endif
2355 }
2356
2357 EV_FREQUENT_CHECK;
2358}
2359
2360void noinline
1560ev_idle_stop (EV_P_ ev_idle *w) 2361ev_signal_stop (EV_P_ ev_signal *w)
1561{ 2362{
1562 ev_clear_pending (EV_A_ (W)w); 2363 clear_pending (EV_A_ (W)w);
1563 if (expect_false (!ev_is_active (w))) 2364 if (expect_false (!ev_is_active (w)))
1564 return; 2365 return;
1565 2366
1566 { 2367 EV_FREQUENT_CHECK;
1567 int active = ((W)w)->active;
1568 idles [active - 1] = idles [--idlecnt];
1569 ((W)idles [active - 1])->active = active;
1570 }
1571 2368
2369 wlist_del (&signals [w->signum - 1].head, (WL)w);
1572 ev_stop (EV_A_ (W)w); 2370 ev_stop (EV_A_ (W)w);
1573}
1574 2371
2372 if (!signals [w->signum - 1].head)
2373 signal (w->signum, SIG_DFL);
2374
2375 EV_FREQUENT_CHECK;
2376}
2377
1575void 2378void
1576ev_prepare_start (EV_P_ ev_prepare *w) 2379ev_child_start (EV_P_ ev_child *w)
1577{ 2380{
2381#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif
1578 if (expect_false (ev_is_active (w))) 2384 if (expect_false (ev_is_active (w)))
1579 return; 2385 return;
2386
2387 EV_FREQUENT_CHECK;
2388
2389 ev_start (EV_A_ (W)w, 1);
2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2391
2392 EV_FREQUENT_CHECK;
2393}
2394
2395void
2396ev_child_stop (EV_P_ ev_child *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 EV_FREQUENT_CHECK;
2403
2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2405 ev_stop (EV_A_ (W)w);
2406
2407 EV_FREQUENT_CHECK;
2408}
2409
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
2425static void noinline
2426infy_add (EV_P_ ev_stat *w)
2427{
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 }
2510}
2511
2512static void
2513infy_cb (EV_P_ ev_io *w, int revents)
2514{
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));
2519
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522}
2523
2524void inline_size
2525infy_init (EV_P)
2526{
2527 if (fs_fd != -2)
2528 return;
2529
2530 fs_fd = inotify_init ();
2531
2532 if (fs_fd >= 0)
2533 {
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w);
2537 }
2538}
2539
2540void inline_size
2541infy_fork (EV_P)
2542{
2543 int slot;
2544
2545 if (fs_fd < 0)
2546 return;
2547
2548 close (fs_fd);
2549 fs_fd = inotify_init ();
2550
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2552 {
2553 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0;
2555
2556 while (w_)
2557 {
2558 ev_stat *w = (ev_stat *)w_;
2559 w_ = w_->next; /* lets us add this watcher */
2560
2561 w->wd = -1;
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
2572#endif
2573
2574void
2575ev_stat_stat (EV_P_ ev_stat *w)
2576{
2577 if (lstat (w->path, &w->attr) < 0)
2578 w->attr.st_nlink = 0;
2579 else if (!w->attr.st_nlink)
2580 w->attr.st_nlink = 1;
2581}
2582
2583static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587
2588 /* we copy this here each the time so that */
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w);
2592
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
2613 ev_feed_event (EV_A_ w, EV_STAT);
2614 }
2615}
2616
2617void
2618ev_stat_start (EV_P_ ev_stat *w)
2619{
2620 if (expect_false (ev_is_active (w)))
2621 return;
2622
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w);
2628
2629 if (w->interval < MIN_STAT_INTERVAL)
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
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
2642 ev_timer_start (EV_A_ &w->timer);
2643
2644 ev_start (EV_A_ (W)w, 1);
2645
2646 EV_FREQUENT_CHECK;
2647}
2648
2649void
2650ev_stat_stop (EV_P_ ev_stat *w)
2651{
2652 clear_pending (EV_A_ (W)w);
2653 if (expect_false (!ev_is_active (w)))
2654 return;
2655
2656 EV_FREQUENT_CHECK;
2657
2658#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w);
2660#endif
2661 ev_timer_stop (EV_A_ &w->timer);
2662
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;
1580 2723
1581 ev_start (EV_A_ (W)w, ++preparecnt); 2724 ev_start (EV_A_ (W)w, ++preparecnt);
1582 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2725 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1583 prepares [preparecnt - 1] = w; 2726 prepares [preparecnt - 1] = w;
2727
2728 EV_FREQUENT_CHECK;
1584} 2729}
1585 2730
1586void 2731void
1587ev_prepare_stop (EV_P_ ev_prepare *w) 2732ev_prepare_stop (EV_P_ ev_prepare *w)
1588{ 2733{
1589 ev_clear_pending (EV_A_ (W)w); 2734 clear_pending (EV_A_ (W)w);
1590 if (expect_false (!ev_is_active (w))) 2735 if (expect_false (!ev_is_active (w)))
1591 return; 2736 return;
1592 2737
2738 EV_FREQUENT_CHECK;
2739
1593 { 2740 {
1594 int active = ((W)w)->active; 2741 int active = ev_active (w);
2742
1595 prepares [active - 1] = prepares [--preparecnt]; 2743 prepares [active - 1] = prepares [--preparecnt];
1596 ((W)prepares [active - 1])->active = active; 2744 ev_active (prepares [active - 1]) = active;
1597 } 2745 }
1598 2746
1599 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
1600} 2750}
1601 2751
1602void 2752void
1603ev_check_start (EV_P_ ev_check *w) 2753ev_check_start (EV_P_ ev_check *w)
1604{ 2754{
1605 if (expect_false (ev_is_active (w))) 2755 if (expect_false (ev_is_active (w)))
1606 return; 2756 return;
2757
2758 EV_FREQUENT_CHECK;
1607 2759
1608 ev_start (EV_A_ (W)w, ++checkcnt); 2760 ev_start (EV_A_ (W)w, ++checkcnt);
1609 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2761 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1610 checks [checkcnt - 1] = w; 2762 checks [checkcnt - 1] = w;
2763
2764 EV_FREQUENT_CHECK;
1611} 2765}
1612 2766
1613void 2767void
1614ev_check_stop (EV_P_ ev_check *w) 2768ev_check_stop (EV_P_ ev_check *w)
1615{ 2769{
1616 ev_clear_pending (EV_A_ (W)w); 2770 clear_pending (EV_A_ (W)w);
1617 if (expect_false (!ev_is_active (w))) 2771 if (expect_false (!ev_is_active (w)))
1618 return; 2772 return;
1619 2773
2774 EV_FREQUENT_CHECK;
2775
1620 { 2776 {
1621 int active = ((W)w)->active; 2777 int active = ev_active (w);
2778
1622 checks [active - 1] = checks [--checkcnt]; 2779 checks [active - 1] = checks [--checkcnt];
1623 ((W)checks [active - 1])->active = active; 2780 ev_active (checks [active - 1]) = active;
1624 } 2781 }
1625 2782
1626 ev_stop (EV_A_ (W)w); 2783 ev_stop (EV_A_ (W)w);
1627}
1628 2784
1629#ifndef SA_RESTART 2785 EV_FREQUENT_CHECK;
1630# define SA_RESTART 0
1631#endif
1632
1633void
1634ev_signal_start (EV_P_ ev_signal *w)
1635{
1636#if EV_MULTIPLICITY
1637 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1638#endif
1639 if (expect_false (ev_is_active (w)))
1640 return;
1641
1642 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1643
1644 ev_start (EV_A_ (W)w, 1);
1645 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1646 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1647
1648 if (!((WL)w)->next)
1649 {
1650#if _WIN32
1651 signal (w->signum, sighandler);
1652#else
1653 struct sigaction sa;
1654 sa.sa_handler = sighandler;
1655 sigfillset (&sa.sa_mask);
1656 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1657 sigaction (w->signum, &sa, 0);
1658#endif
1659 }
1660} 2786}
1661 2787
1662void 2788#if EV_EMBED_ENABLE
1663ev_signal_stop (EV_P_ ev_signal *w) 2789void noinline
1664{
1665 ev_clear_pending (EV_A_ (W)w);
1666 if (expect_false (!ev_is_active (w)))
1667 return;
1668
1669 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1670 ev_stop (EV_A_ (W)w);
1671
1672 if (!signals [w->signum - 1].head)
1673 signal (w->signum, SIG_DFL);
1674}
1675
1676void
1677ev_child_start (EV_P_ ev_child *w)
1678{
1679#if EV_MULTIPLICITY
1680 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1681#endif
1682 if (expect_false (ev_is_active (w)))
1683 return;
1684
1685 ev_start (EV_A_ (W)w, 1);
1686 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1687}
1688
1689void
1690ev_child_stop (EV_P_ ev_child *w)
1691{
1692 ev_clear_pending (EV_A_ (W)w);
1693 if (expect_false (!ev_is_active (w)))
1694 return;
1695
1696 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1697 ev_stop (EV_A_ (W)w);
1698}
1699
1700#if EV_MULTIPLICITY
1701void
1702ev_embed_sweep (EV_P_ ev_embed *w) 2790ev_embed_sweep (EV_P_ ev_embed *w)
1703{ 2791{
1704 ev_loop (w->loop, EVLOOP_NONBLOCK); 2792 ev_loop (w->other, EVLOOP_NONBLOCK);
1705} 2793}
1706 2794
1707static void 2795static void
1708embed_cb (EV_P_ ev_io *io, int revents) 2796embed_io_cb (EV_P_ ev_io *io, int revents)
1709{ 2797{
1710 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2798 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1711 2799
1712 if (ev_cb (w)) 2800 if (ev_cb (w))
1713 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2801 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1714 else 2802 else
1715 ev_embed_sweep (loop, w); 2803 ev_loop (w->other, EVLOOP_NONBLOCK);
1716} 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
1717 2829
1718void 2830void
1719ev_embed_start (EV_P_ ev_embed *w) 2831ev_embed_start (EV_P_ ev_embed *w)
1720{ 2832{
1721 if (expect_false (ev_is_active (w))) 2833 if (expect_false (ev_is_active (w)))
1722 return; 2834 return;
1723 2835
1724 { 2836 {
1725 struct ev_loop *loop = w->loop; 2837 struct ev_loop *loop = w->other;
1726 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1727 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1728 } 2840 }
2841
2842 EV_FREQUENT_CHECK;
1729 2843
1730 ev_set_priority (&w->io, ev_priority (w)); 2844 ev_set_priority (&w->io, ev_priority (w));
1731 ev_io_start (EV_A_ &w->io); 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
1732 ev_start (EV_A_ (W)w, 1); 2853 ev_start (EV_A_ (W)w, 1);
2854
2855 EV_FREQUENT_CHECK;
1733} 2856}
1734 2857
1735void 2858void
1736ev_embed_stop (EV_P_ ev_embed *w) 2859ev_embed_stop (EV_P_ ev_embed *w)
1737{ 2860{
1738 ev_clear_pending (EV_A_ (W)w); 2861 clear_pending (EV_A_ (W)w);
1739 if (expect_false (!ev_is_active (w))) 2862 if (expect_false (!ev_is_active (w)))
1740 return; 2863 return;
1741 2864
2865 EV_FREQUENT_CHECK;
2866
1742 ev_io_stop (EV_A_ &w->io); 2867 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare);
2869
1743 ev_stop (EV_A_ (W)w); 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);
1744} 2958}
1745#endif 2959#endif
1746 2960
1747/*****************************************************************************/ 2961/*****************************************************************************/
1748 2962
… …
1806 ev_timer_set (&once->to, timeout, 0.); 3020 ev_timer_set (&once->to, timeout, 0.);
1807 ev_timer_start (EV_A_ &once->to); 3021 ev_timer_start (EV_A_ &once->to);
1808 } 3022 }
1809} 3023}
1810 3024
3025#if EV_MULTIPLICITY
3026 #include "ev_wrap.h"
3027#endif
3028
1811#ifdef __cplusplus 3029#ifdef __cplusplus
1812} 3030}
1813#endif 3031#endif
1814 3032

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