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Comparing libev/ev.c (file contents):
Revision 1.136 by root, Sat Nov 24 07:14:26 2007 UTC vs.
Revision 1.233 by root, Tue May 6 23:34:16 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
130# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
131#endif 170#endif
132 171
133#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
135#endif 178#endif
136 179
137#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
139#endif 182#endif
… …
145# define EV_USE_POLL 1 188# define EV_USE_POLL 1
146# endif 189# endif
147#endif 190#endif
148 191
149#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
150# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
151#endif 198#endif
152 199
153#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
155#endif 202#endif
156 203
157#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 205# define EV_USE_PORT 0
159#endif 206#endif
160 207
161/**/ 208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 241
163#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
166#endif 245#endif
… …
168#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
171#endif 250#endif
172 251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
173#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 268# include <winsock.h>
175#endif 269#endif
176 270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
281#endif
282
177/**/ 283/**/
284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 294
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#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) */ 296#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 */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 298
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 299#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline static inline 301# define noinline __attribute__ ((noinline))
193#else 302#else
194# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
195# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
196#endif 308#endif
197 309
198#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
200 319
201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203 322
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 324#define EMPTY2(a,b) /* used to suppress some warnings */
206 325
207typedef ev_watcher *W; 326typedef ev_watcher *W;
208typedef ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
209typedef ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
210 329
330#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at
332
333#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
212 338
213#ifdef _WIN32 339#ifdef _WIN32
214# include "ev_win32.c" 340# include "ev_win32.c"
215#endif 341#endif
216 342
217/*****************************************************************************/ 343/*****************************************************************************/
218 344
219static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
220 346
347void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 349{
223 syserr_cb = cb; 350 syserr_cb = cb;
224} 351}
225 352
226static void 353static void noinline
227syserr (const char *msg) 354syserr (const char *msg)
228{ 355{
229 if (!msg) 356 if (!msg)
230 msg = "(libev) system error"; 357 msg = "(libev) system error";
231 358
… …
236 perror (msg); 363 perror (msg);
237 abort (); 364 abort ();
238 } 365 }
239} 366}
240 367
368static void *
369ev_realloc_emul (void *ptr, long size)
370{
371 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here.
374 */
375
376 if (size)
377 return realloc (ptr, size);
378
379 free (ptr);
380 return 0;
381}
382
241static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
242 384
385void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 387{
245 alloc = cb; 388 alloc = cb;
246} 389}
247 390
248static void * 391inline_speed void *
249ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
250{ 393{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
252 395
253 if (!ptr && size) 396 if (!ptr && size)
254 { 397 {
255 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
256 abort (); 399 abort ();
… …
277typedef struct 420typedef struct
278{ 421{
279 W w; 422 W w;
280 int events; 423 int events;
281} ANPENDING; 424} ANPENDING;
425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
282 432
283#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
284 434
285 struct ev_loop 435 struct ev_loop
286 { 436 {
… …
320 gettimeofday (&tv, 0); 470 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 471 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 472#endif
323} 473}
324 474
325inline ev_tstamp 475ev_tstamp inline_size
326get_clock (void) 476get_clock (void)
327{ 477{
328#if EV_USE_MONOTONIC 478#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 479 if (expect_true (have_monotonic))
330 { 480 {
… …
343{ 493{
344 return ev_rt_now; 494 return ev_rt_now;
345} 495}
346#endif 496#endif
347 497
348#define array_roundsize(type,n) (((n) | 4) & ~3) 498void
499ev_sleep (ev_tstamp delay)
500{
501 if (delay > 0.)
502 {
503#if EV_USE_NANOSLEEP
504 struct timespec ts;
505
506 ts.tv_sec = (time_t)delay;
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0);
510#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3));
512#else
513 struct timeval tv;
514
515 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517
518 select (0, 0, 0, 0, &tv);
519#endif
520 }
521}
522
523/*****************************************************************************/
524
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526
527int inline_size
528array_nextsize (int elem, int cur, int cnt)
529{
530 int ncur = cur + 1;
531
532 do
533 ncur <<= 1;
534 while (cnt > ncur);
535
536 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
537 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
538 {
539 ncur *= elem;
540 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
541 ncur = ncur - sizeof (void *) * 4;
542 ncur /= elem;
543 }
544
545 return ncur;
546}
547
548static noinline void *
549array_realloc (int elem, void *base, int *cur, int cnt)
550{
551 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur);
553}
349 554
350#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
352 { \ 557 { \
353 int newcnt = cur; \ 558 int ocur_ = (cur); \
354 do \ 559 (base) = (type *)array_realloc \
355 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 561 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 } 562 }
364 563
564#if 0
365#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 567 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 571 }
572#endif
372 573
373#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 576
376/*****************************************************************************/ 577/*****************************************************************************/
377 578
378static void 579void noinline
580ev_feed_event (EV_P_ void *w, int revents)
581{
582 W w_ = (W)w;
583 int pri = ABSPRI (w_);
584
585 if (expect_false (w_->pending))
586 pendings [pri][w_->pending - 1].events |= revents;
587 else
588 {
589 w_->pending = ++pendingcnt [pri];
590 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
591 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents;
593 }
594}
595
596void inline_speed
597queue_events (EV_P_ W *events, int eventcnt, int type)
598{
599 int i;
600
601 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type);
603}
604
605/*****************************************************************************/
606
607void inline_size
379anfds_init (ANFD *base, int count) 608anfds_init (ANFD *base, int count)
380{ 609{
381 while (count--) 610 while (count--)
382 { 611 {
383 base->head = 0; 612 base->head = 0;
… …
386 615
387 ++base; 616 ++base;
388 } 617 }
389} 618}
390 619
391void 620void 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) 621fd_event (EV_P_ int fd, int revents)
419{ 622{
420 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
421 ev_io *w; 624 ev_io *w;
422 625
… …
430} 633}
431 634
432void 635void
433ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 637{
638 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
436} 640}
437 641
438/*****************************************************************************/ 642void inline_size
439
440inline void
441fd_reify (EV_P) 643fd_reify (EV_P)
442{ 644{
443 int i; 645 int i;
444 646
445 for (i = 0; i < fdchangecnt; ++i) 647 for (i = 0; i < fdchangecnt; ++i)
446 { 648 {
447 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
449 ev_io *w; 651 ev_io *w;
450 652
451 int events = 0; 653 unsigned char events = 0;
452 654
453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 656 events |= (unsigned char)w->events;
455 657
456#if EV_SELECT_IS_WINSOCKET 658#if EV_SELECT_IS_WINSOCKET
457 if (events) 659 if (events)
458 { 660 {
459 unsigned long argp; 661 unsigned long argp;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
460 anfd->handle = _get_osfhandle (fd); 665 anfd->handle = _get_osfhandle (fd);
666 #endif
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
462 } 668 }
463#endif 669#endif
464 670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
465 anfd->reify = 0; 675 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 anfd->events = events; 676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events);
680 }
469 } 681 }
470 682
471 fdchangecnt = 0; 683 fdchangecnt = 0;
472} 684}
473 685
474static void 686void inline_size
475fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
476{ 688{
477 if (expect_false (anfds [fd].reify)) 689 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
481 691
692 if (expect_true (!reify))
693 {
482 ++fdchangecnt; 694 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
485} 698}
486 699
487static void 700void inline_speed
488fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
489{ 702{
490 ev_io *w; 703 ev_io *w;
491 704
492 while ((w = (ev_io *)anfds [fd].head)) 705 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 707 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 709 }
497} 710}
498 711
499inline int 712int inline_size
500fd_valid (int fd) 713fd_valid (int fd)
501{ 714{
502#ifdef _WIN32 715#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 716 return _get_osfhandle (fd) != -1;
504#else 717#else
505 return fcntl (fd, F_GETFD) != -1; 718 return fcntl (fd, F_GETFD) != -1;
506#endif 719#endif
507} 720}
508 721
509/* called on EBADF to verify fds */ 722/* called on EBADF to verify fds */
510static void 723static void noinline
511fd_ebadf (EV_P) 724fd_ebadf (EV_P)
512{ 725{
513 int fd; 726 int fd;
514 727
515 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
… …
517 if (!fd_valid (fd) == -1 && errno == EBADF) 730 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 731 fd_kill (EV_A_ fd);
519} 732}
520 733
521/* called on ENOMEM in select/poll to kill some fds and retry */ 734/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 735static void noinline
523fd_enomem (EV_P) 736fd_enomem (EV_P)
524{ 737{
525 int fd; 738 int fd;
526 739
527 for (fd = anfdmax; fd--; ) 740 for (fd = anfdmax; fd--; )
… …
531 return; 744 return;
532 } 745 }
533} 746}
534 747
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 748/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 749static void noinline
537fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
538{ 751{
539 int fd; 752 int fd;
540 753
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 755 if (anfds [fd].events)
544 { 756 {
545 anfds [fd].events = 0; 757 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 759 }
548} 760}
549 761
550/*****************************************************************************/ 762/*****************************************************************************/
551 763
552static void 764/* towards the root */
765void inline_speed
553upheap (WT *heap, int k) 766upheap (WT *heap, int k)
554{ 767{
555 WT w = heap [k]; 768 WT w = heap [k];
556 769
557 while (k && heap [k >> 1]->at > w->at) 770 for (;;)
558 { 771 {
772 int p = k >> 1;
773
774 /* maybe we could use a dummy element at heap [0]? */
775 if (!p || heap [p]->at <= w->at)
776 break;
777
559 heap [k] = heap [k >> 1]; 778 heap [k] = heap [p];
560 ((W)heap [k])->active = k + 1; 779 ev_active (heap [k]) = k;
561 k >>= 1; 780 k = p;
562 } 781 }
563 782
564 heap [k] = w; 783 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 784 ev_active (heap [k]) = k;
566
567} 785}
568 786
569static void 787/* away from the root */
788void inline_speed
570downheap (WT *heap, int N, int k) 789downheap (WT *heap, int N, int k)
571{ 790{
572 WT w = heap [k]; 791 WT w = heap [k];
573 792
574 while (k < (N >> 1)) 793 for (;;)
575 { 794 {
576 int j = k << 1; 795 int c = k << 1;
577 796
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 797 if (c > N)
579 ++j;
580
581 if (w->at <= heap [j]->at)
582 break; 798 break;
583 799
800 c += c < N && heap [c]->at > heap [c + 1]->at
801 ? 1 : 0;
802
803 if (w->at <= heap [c]->at)
804 break;
805
584 heap [k] = heap [j]; 806 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 807 ev_active (heap [k]) = k;
808
586 k = j; 809 k = c;
587 } 810 }
588 811
589 heap [k] = w; 812 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 813 ev_active (heap [k]) = k;
591} 814}
592 815
593inline void 816void inline_size
594adjustheap (WT *heap, int N, int k) 817adjustheap (WT *heap, int N, int k)
595{ 818{
596 upheap (heap, k); 819 upheap (heap, k);
597 downheap (heap, N, k); 820 downheap (heap, N, k);
598} 821}
… …
600/*****************************************************************************/ 823/*****************************************************************************/
601 824
602typedef struct 825typedef struct
603{ 826{
604 WL head; 827 WL head;
605 sig_atomic_t volatile gotsig; 828 EV_ATOMIC_T gotsig;
606} ANSIG; 829} ANSIG;
607 830
608static ANSIG *signals; 831static ANSIG *signals;
609static int signalmax; 832static int signalmax;
610 833
611static int sigpipe [2]; 834static EV_ATOMIC_T gotsig;
612static sig_atomic_t volatile gotsig;
613static ev_io sigev;
614 835
615static void 836void inline_size
616signals_init (ANSIG *base, int count) 837signals_init (ANSIG *base, int count)
617{ 838{
618 while (count--) 839 while (count--)
619 { 840 {
620 base->head = 0; 841 base->head = 0;
… …
622 843
623 ++base; 844 ++base;
624 } 845 }
625} 846}
626 847
627static void 848/*****************************************************************************/
628sighandler (int signum)
629{
630#if _WIN32
631 signal (signum, sighandler);
632#endif
633 849
634 signals [signum - 1].gotsig = 1; 850void 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) 851fd_intern (int fd)
680{ 852{
681#ifdef _WIN32 853#ifdef _WIN32
682 int arg = 1; 854 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 855 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 857 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 858 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 859#endif
688} 860}
689 861
862static void noinline
863evpipe_init (EV_P)
864{
865 if (!ev_is_active (&pipeev))
866 {
867#if EV_USE_EVENTFD
868 if ((evfd = eventfd (0, 0)) >= 0)
869 {
870 evpipe [0] = -1;
871 fd_intern (evfd);
872 ev_io_set (&pipeev, evfd, EV_READ);
873 }
874 else
875#endif
876 {
877 while (pipe (evpipe))
878 syserr ("(libev) error creating signal/async pipe");
879
880 fd_intern (evpipe [0]);
881 fd_intern (evpipe [1]);
882 ev_io_set (&pipeev, evpipe [0], EV_READ);
883 }
884
885 ev_io_start (EV_A_ &pipeev);
886 ev_unref (EV_A); /* watcher should not keep loop alive */
887 }
888}
889
890void inline_size
891evpipe_write (EV_P_ EV_ATOMIC_T *flag)
892{
893 if (!*flag)
894 {
895 int old_errno = errno; /* save errno because write might clobber it */
896
897 *flag = 1;
898
899#if EV_USE_EVENTFD
900 if (evfd >= 0)
901 {
902 uint64_t counter = 1;
903 write (evfd, &counter, sizeof (uint64_t));
904 }
905 else
906#endif
907 write (evpipe [1], &old_errno, 1);
908
909 errno = old_errno;
910 }
911}
912
690static void 913static void
691siginit (EV_P) 914pipecb (EV_P_ ev_io *iow, int revents)
692{ 915{
693 fd_intern (sigpipe [0]); 916#if EV_USE_EVENTFD
694 fd_intern (sigpipe [1]); 917 if (evfd >= 0)
918 {
919 uint64_t counter;
920 read (evfd, &counter, sizeof (uint64_t));
921 }
922 else
923#endif
924 {
925 char dummy;
926 read (evpipe [0], &dummy, 1);
927 }
695 928
696 ev_io_set (&sigev, sigpipe [0], EV_READ); 929 if (gotsig && ev_is_default_loop (EV_A))
697 ev_io_start (EV_A_ &sigev); 930 {
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 931 int signum;
932 gotsig = 0;
933
934 for (signum = signalmax; signum--; )
935 if (signals [signum].gotsig)
936 ev_feed_signal_event (EV_A_ signum + 1);
937 }
938
939#if EV_ASYNC_ENABLE
940 if (gotasync)
941 {
942 int i;
943 gotasync = 0;
944
945 for (i = asynccnt; i--; )
946 if (asyncs [i]->sent)
947 {
948 asyncs [i]->sent = 0;
949 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
950 }
951 }
952#endif
699} 953}
700 954
701/*****************************************************************************/ 955/*****************************************************************************/
702 956
957static void
958ev_sighandler (int signum)
959{
960#if EV_MULTIPLICITY
961 struct ev_loop *loop = &default_loop_struct;
962#endif
963
964#if _WIN32
965 signal (signum, ev_sighandler);
966#endif
967
968 signals [signum - 1].gotsig = 1;
969 evpipe_write (EV_A_ &gotsig);
970}
971
972void noinline
973ev_feed_signal_event (EV_P_ int signum)
974{
975 WL w;
976
977#if EV_MULTIPLICITY
978 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
979#endif
980
981 --signum;
982
983 if (signum < 0 || signum >= signalmax)
984 return;
985
986 signals [signum].gotsig = 0;
987
988 for (w = signals [signum].head; w; w = w->next)
989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
990}
991
992/*****************************************************************************/
993
703static ev_child *childs [PID_HASHSIZE]; 994static WL childs [EV_PID_HASHSIZE];
704 995
705#ifndef _WIN32 996#ifndef _WIN32
706 997
707static ev_signal childev; 998static ev_signal childev;
999
1000#ifndef WIFCONTINUED
1001# define WIFCONTINUED(status) 0
1002#endif
1003
1004void inline_speed
1005child_reap (EV_P_ int chain, int pid, int status)
1006{
1007 ev_child *w;
1008 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1009
1010 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1011 {
1012 if ((w->pid == pid || !w->pid)
1013 && (!traced || (w->flags & 1)))
1014 {
1015 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1016 w->rpid = pid;
1017 w->rstatus = status;
1018 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1019 }
1020 }
1021}
708 1022
709#ifndef WCONTINUED 1023#ifndef WCONTINUED
710# define WCONTINUED 0 1024# define WCONTINUED 0
711#endif 1025#endif
712 1026
713static void 1027static 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) 1028childcb (EV_P_ ev_signal *sw, int revents)
730{ 1029{
731 int pid, status; 1030 int pid, status;
732 1031
1032 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1033 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 1034 if (!WCONTINUED
1035 || errno != EINVAL
1036 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1037 return;
1038
735 /* make sure we are called again until all childs have been reaped */ 1039 /* 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 */ 1040 /* 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); 1041 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 1042
739 child_reap (EV_A_ sw, pid, pid, status); 1043 child_reap (EV_A_ pid, pid, status);
1044 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 */ 1045 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 1046}
743 1047
744#endif 1048#endif
745 1049
746/*****************************************************************************/ 1050/*****************************************************************************/
… …
772{ 1076{
773 return EV_VERSION_MINOR; 1077 return EV_VERSION_MINOR;
774} 1078}
775 1079
776/* return true if we are running with elevated privileges and should ignore env variables */ 1080/* return true if we are running with elevated privileges and should ignore env variables */
777static int 1081int inline_size
778enable_secure (void) 1082enable_secure (void)
779{ 1083{
780#ifdef _WIN32 1084#ifdef _WIN32
781 return 0; 1085 return 0;
782#else 1086#else
… …
818} 1122}
819 1123
820unsigned int 1124unsigned int
821ev_embeddable_backends (void) 1125ev_embeddable_backends (void)
822{ 1126{
823 return EVBACKEND_EPOLL 1127 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
824 | EVBACKEND_KQUEUE 1128
825 | EVBACKEND_PORT; 1129 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1130 /* please fix it and tell me how to detect the fix */
1131 flags &= ~EVBACKEND_EPOLL;
1132
1133 return flags;
826} 1134}
827 1135
828unsigned int 1136unsigned int
829ev_backend (EV_P) 1137ev_backend (EV_P)
830{ 1138{
831 return backend; 1139 return backend;
832} 1140}
833 1141
834static void 1142unsigned int
1143ev_loop_count (EV_P)
1144{
1145 return loop_count;
1146}
1147
1148void
1149ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1150{
1151 io_blocktime = interval;
1152}
1153
1154void
1155ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1156{
1157 timeout_blocktime = interval;
1158}
1159
1160static void noinline
835loop_init (EV_P_ unsigned int flags) 1161loop_init (EV_P_ unsigned int flags)
836{ 1162{
837 if (!backend) 1163 if (!backend)
838 { 1164 {
839#if EV_USE_MONOTONIC 1165#if EV_USE_MONOTONIC
… …
842 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1168 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
843 have_monotonic = 1; 1169 have_monotonic = 1;
844 } 1170 }
845#endif 1171#endif
846 1172
847 ev_rt_now = ev_time (); 1173 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1174 mn_now = get_clock ();
849 now_floor = mn_now; 1175 now_floor = mn_now;
850 rtmn_diff = ev_rt_now - mn_now; 1176 rtmn_diff = ev_rt_now - mn_now;
1177
1178 io_blocktime = 0.;
1179 timeout_blocktime = 0.;
1180 backend = 0;
1181 backend_fd = -1;
1182 gotasync = 0;
1183#if EV_USE_INOTIFY
1184 fs_fd = -2;
1185#endif
1186
1187 /* pid check not overridable via env */
1188#ifndef _WIN32
1189 if (flags & EVFLAG_FORKCHECK)
1190 curpid = getpid ();
1191#endif
851 1192
852 if (!(flags & EVFLAG_NOENV) 1193 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1194 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1195 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1196 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1197
857 if (!(flags & 0x0000ffffUL)) 1198 if (!(flags & 0x0000ffffU))
858 flags |= ev_recommended_backends (); 1199 flags |= ev_recommended_backends ();
859 1200
860 backend = 0;
861#if EV_USE_PORT 1201#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1202 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1203#endif
864#if EV_USE_KQUEUE 1204#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1205 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
872#endif 1212#endif
873#if EV_USE_SELECT 1213#if EV_USE_SELECT
874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1214 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
875#endif 1215#endif
876 1216
877 ev_init (&sigev, sigcb); 1217 ev_init (&pipeev, pipecb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1218 ev_set_priority (&pipeev, EV_MAXPRI);
879 } 1219 }
880} 1220}
881 1221
882static void 1222static void noinline
883loop_destroy (EV_P) 1223loop_destroy (EV_P)
884{ 1224{
885 int i; 1225 int i;
1226
1227 if (ev_is_active (&pipeev))
1228 {
1229 ev_ref (EV_A); /* signal watcher */
1230 ev_io_stop (EV_A_ &pipeev);
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 close (evfd);
1235#endif
1236
1237 if (evpipe [0] >= 0)
1238 {
1239 close (evpipe [0]);
1240 close (evpipe [1]);
1241 }
1242 }
1243
1244#if EV_USE_INOTIFY
1245 if (fs_fd >= 0)
1246 close (fs_fd);
1247#endif
1248
1249 if (backend_fd >= 0)
1250 close (backend_fd);
886 1251
887#if EV_USE_PORT 1252#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1253 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1254#endif
890#if EV_USE_KQUEUE 1255#if EV_USE_KQUEUE
… …
899#if EV_USE_SELECT 1264#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1265 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1266#endif
902 1267
903 for (i = NUMPRI; i--; ) 1268 for (i = NUMPRI; i--; )
1269 {
904 array_free (pending, [i]); 1270 array_free (pending, [i]);
1271#if EV_IDLE_ENABLE
1272 array_free (idle, [i]);
1273#endif
1274 }
1275
1276 ev_free (anfds); anfdmax = 0;
905 1277
906 /* have to use the microsoft-never-gets-it-right macro */ 1278 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1279 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1280 array_free (timer, EMPTY);
909#if EV_PERIODICS 1281#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1282 array_free (periodic, EMPTY);
911#endif 1283#endif
1284#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1285 array_free (fork, EMPTY);
1286#endif
913 array_free (prepare, EMPTY0); 1287 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1288 array_free (check, EMPTY);
1289#if EV_ASYNC_ENABLE
1290 array_free (async, EMPTY);
1291#endif
915 1292
916 backend = 0; 1293 backend = 0;
917} 1294}
918 1295
919static void 1296#if EV_USE_INOTIFY
1297void inline_size infy_fork (EV_P);
1298#endif
1299
1300void inline_size
920loop_fork (EV_P) 1301loop_fork (EV_P)
921{ 1302{
922#if EV_USE_PORT 1303#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1304 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1305#endif
… …
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1307 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1308#endif
928#if EV_USE_EPOLL 1309#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1310 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
930#endif 1311#endif
1312#if EV_USE_INOTIFY
1313 infy_fork (EV_A);
1314#endif
931 1315
932 if (ev_is_active (&sigev)) 1316 if (ev_is_active (&pipeev))
933 { 1317 {
934 /* default loop */ 1318 /* this "locks" the handlers against writing to the pipe */
1319 /* while we modify the fd vars */
1320 gotsig = 1;
1321#if EV_ASYNC_ENABLE
1322 gotasync = 1;
1323#endif
935 1324
936 ev_ref (EV_A); 1325 ev_ref (EV_A);
937 ev_io_stop (EV_A_ &sigev); 1326 ev_io_stop (EV_A_ &pipeev);
1327
1328#if EV_USE_EVENTFD
1329 if (evfd >= 0)
1330 close (evfd);
1331#endif
1332
1333 if (evpipe [0] >= 0)
1334 {
938 close (sigpipe [0]); 1335 close (evpipe [0]);
939 close (sigpipe [1]); 1336 close (evpipe [1]);
1337 }
940 1338
941 while (pipe (sigpipe))
942 syserr ("(libev) error creating pipe");
943
944 siginit (EV_A); 1339 evpipe_init (EV_A);
1340 /* now iterate over everything, in case we missed something */
1341 pipecb (EV_A_ &pipeev, EV_READ);
945 } 1342 }
946 1343
947 postfork = 0; 1344 postfork = 0;
948} 1345}
949 1346
… …
971} 1368}
972 1369
973void 1370void
974ev_loop_fork (EV_P) 1371ev_loop_fork (EV_P)
975{ 1372{
976 postfork = 1; 1373 postfork = 1; /* must be in line with ev_default_fork */
977} 1374}
978 1375
979#endif 1376#endif
980 1377
981#if EV_MULTIPLICITY 1378#if EV_MULTIPLICITY
… …
984#else 1381#else
985int 1382int
986ev_default_loop (unsigned int flags) 1383ev_default_loop (unsigned int flags)
987#endif 1384#endif
988{ 1385{
989 if (sigpipe [0] == sigpipe [1])
990 if (pipe (sigpipe))
991 return 0;
992
993 if (!ev_default_loop_ptr) 1386 if (!ev_default_loop_ptr)
994 { 1387 {
995#if EV_MULTIPLICITY 1388#if EV_MULTIPLICITY
996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1389 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
997#else 1390#else
… …
1000 1393
1001 loop_init (EV_A_ flags); 1394 loop_init (EV_A_ flags);
1002 1395
1003 if (ev_backend (EV_A)) 1396 if (ev_backend (EV_A))
1004 { 1397 {
1005 siginit (EV_A);
1006
1007#ifndef _WIN32 1398#ifndef _WIN32
1008 ev_signal_init (&childev, childcb, SIGCHLD); 1399 ev_signal_init (&childev, childcb, SIGCHLD);
1009 ev_set_priority (&childev, EV_MAXPRI); 1400 ev_set_priority (&childev, EV_MAXPRI);
1010 ev_signal_start (EV_A_ &childev); 1401 ev_signal_start (EV_A_ &childev);
1011 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1402 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1028#ifndef _WIN32 1419#ifndef _WIN32
1029 ev_ref (EV_A); /* child watcher */ 1420 ev_ref (EV_A); /* child watcher */
1030 ev_signal_stop (EV_A_ &childev); 1421 ev_signal_stop (EV_A_ &childev);
1031#endif 1422#endif
1032 1423
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); 1424 loop_destroy (EV_A);
1040} 1425}
1041 1426
1042void 1427void
1043ev_default_fork (void) 1428ev_default_fork (void)
… …
1045#if EV_MULTIPLICITY 1430#if EV_MULTIPLICITY
1046 struct ev_loop *loop = ev_default_loop_ptr; 1431 struct ev_loop *loop = ev_default_loop_ptr;
1047#endif 1432#endif
1048 1433
1049 if (backend) 1434 if (backend)
1050 postfork = 1; 1435 postfork = 1; /* must be in line with ev_loop_fork */
1051} 1436}
1052 1437
1053/*****************************************************************************/ 1438/*****************************************************************************/
1054 1439
1055static int 1440void
1056any_pending (EV_P) 1441ev_invoke (EV_P_ void *w, int revents)
1057{ 1442{
1058 int pri; 1443 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1444}
1066 1445
1067inline void 1446void inline_speed
1068call_pending (EV_P) 1447call_pending (EV_P)
1069{ 1448{
1070 int pri; 1449 int pri;
1071 1450
1072 for (pri = NUMPRI; pri--; ) 1451 for (pri = NUMPRI; pri--; )
… …
1074 { 1453 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1454 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1455
1077 if (expect_true (p->w)) 1456 if (expect_true (p->w))
1078 { 1457 {
1458 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1459
1079 p->w->pending = 0; 1460 p->w->pending = 0;
1080 EV_CB_INVOKE (p->w, p->events); 1461 EV_CB_INVOKE (p->w, p->events);
1081 } 1462 }
1082 } 1463 }
1083} 1464}
1084 1465
1085inline void 1466void inline_size
1086timers_reify (EV_P) 1467timers_reify (EV_P)
1087{ 1468{
1088 while (timercnt && ((WT)timers [0])->at <= mn_now) 1469 while (timercnt && ev_at (timers [1]) <= mn_now)
1089 { 1470 {
1090 ev_timer *w = timers [0]; 1471 ev_timer *w = (ev_timer *)timers [1];
1091 1472
1092 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1473 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1093 1474
1094 /* first reschedule or stop timer */ 1475 /* first reschedule or stop timer */
1095 if (w->repeat) 1476 if (w->repeat)
1096 { 1477 {
1097 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1478 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1098 1479
1099 ((WT)w)->at += w->repeat; 1480 ev_at (w) += w->repeat;
1100 if (((WT)w)->at < mn_now) 1481 if (ev_at (w) < mn_now)
1101 ((WT)w)->at = mn_now; 1482 ev_at (w) = mn_now;
1102 1483
1103 downheap ((WT *)timers, timercnt, 0); 1484 downheap (timers, timercnt, 1);
1104 } 1485 }
1105 else 1486 else
1106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1487 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1107 1488
1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1489 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109 } 1490 }
1110} 1491}
1111 1492
1112#if EV_PERIODICS 1493#if EV_PERIODIC_ENABLE
1113inline void 1494void inline_size
1114periodics_reify (EV_P) 1495periodics_reify (EV_P)
1115{ 1496{
1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1497 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1117 { 1498 {
1118 ev_periodic *w = periodics [0]; 1499 ev_periodic *w = (ev_periodic *)periodics [1];
1119 1500
1120 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1501 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1121 1502
1122 /* first reschedule or stop timer */ 1503 /* first reschedule or stop timer */
1123 if (w->reschedule_cb) 1504 if (w->reschedule_cb)
1124 { 1505 {
1125 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1506 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1126 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1507 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1127 downheap ((WT *)periodics, periodiccnt, 0); 1508 downheap (periodics, periodiccnt, 1);
1128 } 1509 }
1129 else if (w->interval) 1510 else if (w->interval)
1130 { 1511 {
1131 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1512 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1132 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1514 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1133 downheap ((WT *)periodics, periodiccnt, 0); 1515 downheap (periodics, periodiccnt, 1);
1134 } 1516 }
1135 else 1517 else
1136 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1518 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1137 1519
1138 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1520 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139 } 1521 }
1140} 1522}
1141 1523
1142static void 1524static void noinline
1143periodics_reschedule (EV_P) 1525periodics_reschedule (EV_P)
1144{ 1526{
1145 int i; 1527 int i;
1146 1528
1147 /* adjust periodics after time jump */ 1529 /* adjust periodics after time jump */
1148 for (i = 0; i < periodiccnt; ++i) 1530 for (i = 1; i <= periodiccnt; ++i)
1149 { 1531 {
1150 ev_periodic *w = periodics [i]; 1532 ev_periodic *w = (ev_periodic *)periodics [i];
1151 1533
1152 if (w->reschedule_cb) 1534 if (w->reschedule_cb)
1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1535 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1154 else if (w->interval) 1536 else if (w->interval)
1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1537 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1156 } 1538 }
1157 1539
1158 /* now rebuild the heap */ 1540 /* now rebuild the heap */
1159 for (i = periodiccnt >> 1; i--; ) 1541 for (i = periodiccnt >> 1; i--; )
1160 downheap ((WT *)periodics, periodiccnt, i); 1542 downheap (periodics, periodiccnt, i);
1161} 1543}
1162#endif 1544#endif
1163 1545
1164inline int 1546#if EV_IDLE_ENABLE
1165time_update_monotonic (EV_P) 1547void inline_size
1548idle_reify (EV_P)
1166{ 1549{
1550 if (expect_false (idleall))
1551 {
1552 int pri;
1553
1554 for (pri = NUMPRI; pri--; )
1555 {
1556 if (pendingcnt [pri])
1557 break;
1558
1559 if (idlecnt [pri])
1560 {
1561 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1562 break;
1563 }
1564 }
1565 }
1566}
1567#endif
1568
1569void inline_speed
1570time_update (EV_P_ ev_tstamp max_block)
1571{
1572 int i;
1573
1574#if EV_USE_MONOTONIC
1575 if (expect_true (have_monotonic))
1576 {
1577 ev_tstamp odiff = rtmn_diff;
1578
1167 mn_now = get_clock (); 1579 mn_now = get_clock ();
1168 1580
1581 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1582 /* interpolate in the meantime */
1169 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1583 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1170 { 1584 {
1171 ev_rt_now = rtmn_diff + mn_now; 1585 ev_rt_now = rtmn_diff + mn_now;
1172 return 0; 1586 return;
1173 } 1587 }
1174 else 1588
1175 {
1176 now_floor = mn_now; 1589 now_floor = mn_now;
1177 ev_rt_now = ev_time (); 1590 ev_rt_now = ev_time ();
1178 return 1;
1179 }
1180}
1181 1591
1182inline void 1592 /* loop a few times, before making important decisions.
1183time_update (EV_P) 1593 * on the choice of "4": one iteration isn't enough,
1184{ 1594 * in case we get preempted during the calls to
1185 int i; 1595 * ev_time and get_clock. a second call is almost guaranteed
1186 1596 * to succeed in that case, though. and looping a few more times
1187#if EV_USE_MONOTONIC 1597 * doesn't hurt either as we only do this on time-jumps or
1188 if (expect_true (have_monotonic)) 1598 * in the unlikely event of having been preempted here.
1189 { 1599 */
1190 if (time_update_monotonic (EV_A)) 1600 for (i = 4; --i; )
1191 { 1601 {
1192 ev_tstamp odiff = rtmn_diff;
1193
1194 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1195 {
1196 rtmn_diff = ev_rt_now - mn_now; 1602 rtmn_diff = ev_rt_now - mn_now;
1197 1603
1198 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1604 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199 return; /* all is well */ 1605 return; /* all is well */
1200 1606
1201 ev_rt_now = ev_time (); 1607 ev_rt_now = ev_time ();
1202 mn_now = get_clock (); 1608 mn_now = get_clock ();
1203 now_floor = mn_now; 1609 now_floor = mn_now;
1204 } 1610 }
1205 1611
1206# if EV_PERIODICS 1612# if EV_PERIODIC_ENABLE
1613 periodics_reschedule (EV_A);
1614# endif
1615 /* no timer adjustment, as the monotonic clock doesn't jump */
1616 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1617 }
1618 else
1619#endif
1620 {
1621 ev_rt_now = ev_time ();
1622
1623 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1624 {
1625#if EV_PERIODIC_ENABLE
1207 periodics_reschedule (EV_A); 1626 periodics_reschedule (EV_A);
1208# endif 1627#endif
1209 /* no timer adjustment, as the monotonic clock doesn't jump */ 1628 /* adjust timers. this is easy, as the offset is the same for all of them */
1210 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1629 for (i = 1; i <= timercnt; ++i)
1630 ev_at (timers [i]) += ev_rt_now - mn_now;
1211 } 1631 }
1212 }
1213 else
1214#endif
1215 {
1216 ev_rt_now = ev_time ();
1217
1218 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1219 {
1220#if EV_PERIODICS
1221 periodics_reschedule (EV_A);
1222#endif
1223
1224 /* adjust timers. this is easy, as the offset is the same for all */
1225 for (i = 0; i < timercnt; ++i)
1226 ((WT)timers [i])->at += ev_rt_now - mn_now;
1227 }
1228 1632
1229 mn_now = ev_rt_now; 1633 mn_now = ev_rt_now;
1230 } 1634 }
1231} 1635}
1232 1636
… …
1245static int loop_done; 1649static int loop_done;
1246 1650
1247void 1651void
1248ev_loop (EV_P_ int flags) 1652ev_loop (EV_P_ int flags)
1249{ 1653{
1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1654 loop_done = EVUNLOOP_CANCEL;
1251 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL;
1253 1655
1254 while (activecnt) 1656 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1657
1658 do
1255 { 1659 {
1660#ifndef _WIN32
1661 if (expect_false (curpid)) /* penalise the forking check even more */
1662 if (expect_false (getpid () != curpid))
1663 {
1664 curpid = getpid ();
1665 postfork = 1;
1666 }
1667#endif
1668
1669#if EV_FORK_ENABLE
1670 /* we might have forked, so queue fork handlers */
1671 if (expect_false (postfork))
1672 if (forkcnt)
1673 {
1674 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1675 call_pending (EV_A);
1676 }
1677#endif
1678
1256 /* queue check watchers (and execute them) */ 1679 /* queue prepare watchers (and execute them) */
1257 if (expect_false (preparecnt)) 1680 if (expect_false (preparecnt))
1258 { 1681 {
1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1682 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260 call_pending (EV_A); 1683 call_pending (EV_A);
1261 } 1684 }
1262 1685
1686 if (expect_false (!activecnt))
1687 break;
1688
1263 /* we might have forked, so reify kernel state if necessary */ 1689 /* we might have forked, so reify kernel state if necessary */
1264 if (expect_false (postfork)) 1690 if (expect_false (postfork))
1265 loop_fork (EV_A); 1691 loop_fork (EV_A);
1266 1692
1267 /* update fd-related kernel structures */ 1693 /* update fd-related kernel structures */
1268 fd_reify (EV_A); 1694 fd_reify (EV_A);
1269 1695
1270 /* calculate blocking time */ 1696 /* calculate blocking time */
1271 { 1697 {
1272 double block; 1698 ev_tstamp waittime = 0.;
1699 ev_tstamp sleeptime = 0.;
1273 1700
1274 if (flags & EVLOOP_NONBLOCK || idlecnt) 1701 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1275 block = 0.; /* do not block at all */
1276 else
1277 { 1702 {
1278 /* update time to cancel out callback processing overhead */ 1703 /* update time to cancel out callback processing overhead */
1279#if EV_USE_MONOTONIC
1280 if (expect_true (have_monotonic))
1281 time_update_monotonic (EV_A); 1704 time_update (EV_A_ 1e100);
1282 else
1283#endif
1284 {
1285 ev_rt_now = ev_time ();
1286 mn_now = ev_rt_now;
1287 }
1288 1705
1289 block = MAX_BLOCKTIME; 1706 waittime = MAX_BLOCKTIME;
1290 1707
1291 if (timercnt) 1708 if (timercnt)
1292 { 1709 {
1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1710 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1294 if (block > to) block = to; 1711 if (waittime > to) waittime = to;
1295 } 1712 }
1296 1713
1297#if EV_PERIODICS 1714#if EV_PERIODIC_ENABLE
1298 if (periodiccnt) 1715 if (periodiccnt)
1299 { 1716 {
1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1717 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1301 if (block > to) block = to; 1718 if (waittime > to) waittime = to;
1302 } 1719 }
1303#endif 1720#endif
1304 1721
1305 if (expect_false (block < 0.)) block = 0.; 1722 if (expect_false (waittime < timeout_blocktime))
1723 waittime = timeout_blocktime;
1724
1725 sleeptime = waittime - backend_fudge;
1726
1727 if (expect_true (sleeptime > io_blocktime))
1728 sleeptime = io_blocktime;
1729
1730 if (sleeptime)
1731 {
1732 ev_sleep (sleeptime);
1733 waittime -= sleeptime;
1734 }
1306 } 1735 }
1307 1736
1737 ++loop_count;
1308 backend_poll (EV_A_ block); 1738 backend_poll (EV_A_ waittime);
1739
1740 /* update ev_rt_now, do magic */
1741 time_update (EV_A_ waittime + sleeptime);
1309 } 1742 }
1310
1311 /* update ev_rt_now, do magic */
1312 time_update (EV_A);
1313 1743
1314 /* queue pending timers and reschedule them */ 1744 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1745 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1746#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1747 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1748#endif
1319 1749
1750#if EV_IDLE_ENABLE
1320 /* queue idle watchers unless io or timers are pending */ 1751 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1752 idle_reify (EV_A);
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1753#endif
1323 1754
1324 /* queue check watchers, to be executed first */ 1755 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1756 if (expect_false (checkcnt))
1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1757 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327 1758
1328 call_pending (EV_A); 1759 call_pending (EV_A);
1329
1330 if (expect_false (loop_done))
1331 break;
1332 } 1760 }
1761 while (expect_true (
1762 activecnt
1763 && !loop_done
1764 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1765 ));
1333 1766
1334 if (loop_done == EVUNLOOP_ONE) 1767 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = EVUNLOOP_CANCEL; 1768 loop_done = EVUNLOOP_CANCEL;
1336} 1769}
1337 1770
… …
1341 loop_done = how; 1774 loop_done = how;
1342} 1775}
1343 1776
1344/*****************************************************************************/ 1777/*****************************************************************************/
1345 1778
1346inline void 1779void inline_size
1347wlist_add (WL *head, WL elem) 1780wlist_add (WL *head, WL elem)
1348{ 1781{
1349 elem->next = *head; 1782 elem->next = *head;
1350 *head = elem; 1783 *head = elem;
1351} 1784}
1352 1785
1353inline void 1786void inline_size
1354wlist_del (WL *head, WL elem) 1787wlist_del (WL *head, WL elem)
1355{ 1788{
1356 while (*head) 1789 while (*head)
1357 { 1790 {
1358 if (*head == elem) 1791 if (*head == elem)
… …
1363 1796
1364 head = &(*head)->next; 1797 head = &(*head)->next;
1365 } 1798 }
1366} 1799}
1367 1800
1368inline void 1801void inline_speed
1369ev_clear_pending (EV_P_ W w) 1802clear_pending (EV_P_ W w)
1370{ 1803{
1371 if (w->pending) 1804 if (w->pending)
1372 { 1805 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1806 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1807 w->pending = 0;
1375 } 1808 }
1376} 1809}
1377 1810
1378inline void 1811int
1812ev_clear_pending (EV_P_ void *w)
1813{
1814 W w_ = (W)w;
1815 int pending = w_->pending;
1816
1817 if (expect_true (pending))
1818 {
1819 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1820 w_->pending = 0;
1821 p->w = 0;
1822 return p->events;
1823 }
1824 else
1825 return 0;
1826}
1827
1828void inline_size
1829pri_adjust (EV_P_ W w)
1830{
1831 int pri = w->priority;
1832 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1833 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1834 w->priority = pri;
1835}
1836
1837void inline_speed
1379ev_start (EV_P_ W w, int active) 1838ev_start (EV_P_ W w, int active)
1380{ 1839{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1840 pri_adjust (EV_A_ w);
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384 w->active = active; 1841 w->active = active;
1385 ev_ref (EV_A); 1842 ev_ref (EV_A);
1386} 1843}
1387 1844
1388inline void 1845void inline_size
1389ev_stop (EV_P_ W w) 1846ev_stop (EV_P_ W w)
1390{ 1847{
1391 ev_unref (EV_A); 1848 ev_unref (EV_A);
1392 w->active = 0; 1849 w->active = 0;
1393} 1850}
1394 1851
1395/*****************************************************************************/ 1852/*****************************************************************************/
1396 1853
1397void 1854void noinline
1398ev_io_start (EV_P_ ev_io *w) 1855ev_io_start (EV_P_ ev_io *w)
1399{ 1856{
1400 int fd = w->fd; 1857 int fd = w->fd;
1401 1858
1402 if (expect_false (ev_is_active (w))) 1859 if (expect_false (ev_is_active (w)))
… …
1404 1861
1405 assert (("ev_io_start called with negative fd", fd >= 0)); 1862 assert (("ev_io_start called with negative fd", fd >= 0));
1406 1863
1407 ev_start (EV_A_ (W)w, 1); 1864 ev_start (EV_A_ (W)w, 1);
1408 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1865 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1866 wlist_add (&anfds[fd].head, (WL)w);
1410 1867
1411 fd_change (EV_A_ fd); 1868 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1869 w->events &= ~EV_IOFDSET;
1412} 1870}
1413 1871
1414void 1872void noinline
1415ev_io_stop (EV_P_ ev_io *w) 1873ev_io_stop (EV_P_ ev_io *w)
1416{ 1874{
1417 ev_clear_pending (EV_A_ (W)w); 1875 clear_pending (EV_A_ (W)w);
1418 if (expect_false (!ev_is_active (w))) 1876 if (expect_false (!ev_is_active (w)))
1419 return; 1877 return;
1420 1878
1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1879 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422 1880
1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1881 wlist_del (&anfds[w->fd].head, (WL)w);
1424 ev_stop (EV_A_ (W)w); 1882 ev_stop (EV_A_ (W)w);
1425 1883
1426 fd_change (EV_A_ w->fd); 1884 fd_change (EV_A_ w->fd, 1);
1427} 1885}
1428 1886
1429void 1887void noinline
1430ev_timer_start (EV_P_ ev_timer *w) 1888ev_timer_start (EV_P_ ev_timer *w)
1431{ 1889{
1432 if (expect_false (ev_is_active (w))) 1890 if (expect_false (ev_is_active (w)))
1433 return; 1891 return;
1434 1892
1435 ((WT)w)->at += mn_now; 1893 ev_at (w) += mn_now;
1436 1894
1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1895 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438 1896
1439 ev_start (EV_A_ (W)w, ++timercnt); 1897 ev_start (EV_A_ (W)w, ++timercnt);
1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1898 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1441 timers [timercnt - 1] = w; 1899 timers [timercnt] = (WT)w;
1442 upheap ((WT *)timers, timercnt - 1); 1900 upheap (timers, timercnt);
1443 1901
1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1902 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1445} 1903}
1446 1904
1447void 1905void noinline
1448ev_timer_stop (EV_P_ ev_timer *w) 1906ev_timer_stop (EV_P_ ev_timer *w)
1449{ 1907{
1450 ev_clear_pending (EV_A_ (W)w); 1908 clear_pending (EV_A_ (W)w);
1451 if (expect_false (!ev_is_active (w))) 1909 if (expect_false (!ev_is_active (w)))
1452 return; 1910 return;
1453 1911
1912 {
1913 int active = ev_active (w);
1914
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1915 assert (("internal timer heap corruption", timers [active] == (WT)w));
1455 1916
1456 if (expect_true (((W)w)->active < timercnt--)) 1917 if (expect_true (active < timercnt))
1457 { 1918 {
1458 timers [((W)w)->active - 1] = timers [timercnt]; 1919 timers [active] = timers [timercnt];
1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1920 adjustheap (timers, timercnt, active);
1460 } 1921 }
1461 1922
1462 ((WT)w)->at -= mn_now; 1923 --timercnt;
1924 }
1925
1926 ev_at (w) -= mn_now;
1463 1927
1464 ev_stop (EV_A_ (W)w); 1928 ev_stop (EV_A_ (W)w);
1465} 1929}
1466 1930
1467void 1931void noinline
1468ev_timer_again (EV_P_ ev_timer *w) 1932ev_timer_again (EV_P_ ev_timer *w)
1469{ 1933{
1470 if (ev_is_active (w)) 1934 if (ev_is_active (w))
1471 { 1935 {
1472 if (w->repeat) 1936 if (w->repeat)
1473 { 1937 {
1474 ((WT)w)->at = mn_now + w->repeat; 1938 ev_at (w) = mn_now + w->repeat;
1475 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1939 adjustheap (timers, timercnt, ev_active (w));
1476 } 1940 }
1477 else 1941 else
1478 ev_timer_stop (EV_A_ w); 1942 ev_timer_stop (EV_A_ w);
1479 } 1943 }
1480 else if (w->repeat) 1944 else if (w->repeat)
1481 { 1945 {
1482 w->at = w->repeat; 1946 ev_at (w) = w->repeat;
1483 ev_timer_start (EV_A_ w); 1947 ev_timer_start (EV_A_ w);
1484 } 1948 }
1485} 1949}
1486 1950
1487#if EV_PERIODICS 1951#if EV_PERIODIC_ENABLE
1488void 1952void noinline
1489ev_periodic_start (EV_P_ ev_periodic *w) 1953ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1954{
1491 if (expect_false (ev_is_active (w))) 1955 if (expect_false (ev_is_active (w)))
1492 return; 1956 return;
1493 1957
1494 if (w->reschedule_cb) 1958 if (w->reschedule_cb)
1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1959 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1496 else if (w->interval) 1960 else if (w->interval)
1497 { 1961 {
1498 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1962 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1499 /* this formula differs from the one in periodic_reify because we do not always round up */ 1963 /* this formula differs from the one in periodic_reify because we do not always round up */
1500 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1964 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501 } 1965 }
1966 else
1967 ev_at (w) = w->offset;
1502 1968
1503 ev_start (EV_A_ (W)w, ++periodiccnt); 1969 ev_start (EV_A_ (W)w, ++periodiccnt);
1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1970 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1505 periodics [periodiccnt - 1] = w; 1971 periodics [periodiccnt] = (WT)w;
1506 upheap ((WT *)periodics, periodiccnt - 1); 1972 upheap (periodics, periodiccnt);
1507 1973
1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1974 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1509} 1975}
1510 1976
1511void 1977void noinline
1512ev_periodic_stop (EV_P_ ev_periodic *w) 1978ev_periodic_stop (EV_P_ ev_periodic *w)
1513{ 1979{
1514 ev_clear_pending (EV_A_ (W)w); 1980 clear_pending (EV_A_ (W)w);
1515 if (expect_false (!ev_is_active (w))) 1981 if (expect_false (!ev_is_active (w)))
1516 return; 1982 return;
1517 1983
1984 {
1985 int active = ev_active (w);
1986
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1987 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1519 1988
1520 if (expect_true (((W)w)->active < periodiccnt--)) 1989 if (expect_true (active < periodiccnt))
1521 { 1990 {
1522 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1991 periodics [active] = periodics [periodiccnt];
1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1992 adjustheap (periodics, periodiccnt, active);
1524 } 1993 }
1994
1995 --periodiccnt;
1996 }
1525 1997
1526 ev_stop (EV_A_ (W)w); 1998 ev_stop (EV_A_ (W)w);
1527} 1999}
1528 2000
1529void 2001void noinline
1530ev_periodic_again (EV_P_ ev_periodic *w) 2002ev_periodic_again (EV_P_ ev_periodic *w)
1531{ 2003{
1532 /* TODO: use adjustheap and recalculation */ 2004 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 2005 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 2006 ev_periodic_start (EV_A_ w);
1535} 2007}
1536#endif 2008#endif
1537 2009
2010#ifndef SA_RESTART
2011# define SA_RESTART 0
2012#endif
2013
2014void noinline
2015ev_signal_start (EV_P_ ev_signal *w)
2016{
2017#if EV_MULTIPLICITY
2018 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2019#endif
2020 if (expect_false (ev_is_active (w)))
2021 return;
2022
2023 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2024
2025 evpipe_init (EV_A);
2026
2027 {
2028#ifndef _WIN32
2029 sigset_t full, prev;
2030 sigfillset (&full);
2031 sigprocmask (SIG_SETMASK, &full, &prev);
2032#endif
2033
2034 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2035
2036#ifndef _WIN32
2037 sigprocmask (SIG_SETMASK, &prev, 0);
2038#endif
2039 }
2040
2041 ev_start (EV_A_ (W)w, 1);
2042 wlist_add (&signals [w->signum - 1].head, (WL)w);
2043
2044 if (!((WL)w)->next)
2045 {
2046#if _WIN32
2047 signal (w->signum, ev_sighandler);
2048#else
2049 struct sigaction sa;
2050 sa.sa_handler = ev_sighandler;
2051 sigfillset (&sa.sa_mask);
2052 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2053 sigaction (w->signum, &sa, 0);
2054#endif
2055 }
2056}
2057
2058void noinline
2059ev_signal_stop (EV_P_ ev_signal *w)
2060{
2061 clear_pending (EV_A_ (W)w);
2062 if (expect_false (!ev_is_active (w)))
2063 return;
2064
2065 wlist_del (&signals [w->signum - 1].head, (WL)w);
2066 ev_stop (EV_A_ (W)w);
2067
2068 if (!signals [w->signum - 1].head)
2069 signal (w->signum, SIG_DFL);
2070}
2071
2072void
2073ev_child_start (EV_P_ ev_child *w)
2074{
2075#if EV_MULTIPLICITY
2076 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2077#endif
2078 if (expect_false (ev_is_active (w)))
2079 return;
2080
2081 ev_start (EV_A_ (W)w, 1);
2082 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2083}
2084
2085void
2086ev_child_stop (EV_P_ ev_child *w)
2087{
2088 clear_pending (EV_A_ (W)w);
2089 if (expect_false (!ev_is_active (w)))
2090 return;
2091
2092 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2093 ev_stop (EV_A_ (W)w);
2094}
2095
2096#if EV_STAT_ENABLE
2097
2098# ifdef _WIN32
2099# undef lstat
2100# define lstat(a,b) _stati64 (a,b)
2101# endif
2102
2103#define DEF_STAT_INTERVAL 5.0074891
2104#define MIN_STAT_INTERVAL 0.1074891
2105
2106static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2107
2108#if EV_USE_INOTIFY
2109# define EV_INOTIFY_BUFSIZE 8192
2110
2111static void noinline
2112infy_add (EV_P_ ev_stat *w)
2113{
2114 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);
2115
2116 if (w->wd < 0)
2117 {
2118 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2119
2120 /* monitor some parent directory for speedup hints */
2121 /* note that exceeding the hardcoded limit is not a correctness issue, */
2122 /* but an efficiency issue only */
2123 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2124 {
2125 char path [4096];
2126 strcpy (path, w->path);
2127
2128 do
2129 {
2130 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2131 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2132
2133 char *pend = strrchr (path, '/');
2134
2135 if (!pend)
2136 break; /* whoops, no '/', complain to your admin */
2137
2138 *pend = 0;
2139 w->wd = inotify_add_watch (fs_fd, path, mask);
2140 }
2141 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2142 }
2143 }
2144 else
2145 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2146
2147 if (w->wd >= 0)
2148 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2149}
2150
2151static void noinline
2152infy_del (EV_P_ ev_stat *w)
2153{
2154 int slot;
2155 int wd = w->wd;
2156
2157 if (wd < 0)
2158 return;
2159
2160 w->wd = -2;
2161 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2162 wlist_del (&fs_hash [slot].head, (WL)w);
2163
2164 /* remove this watcher, if others are watching it, they will rearm */
2165 inotify_rm_watch (fs_fd, wd);
2166}
2167
2168static void noinline
2169infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2170{
2171 if (slot < 0)
2172 /* overflow, need to check for all hahs slots */
2173 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2174 infy_wd (EV_A_ slot, wd, ev);
2175 else
2176 {
2177 WL w_;
2178
2179 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2180 {
2181 ev_stat *w = (ev_stat *)w_;
2182 w_ = w_->next; /* lets us remove this watcher and all before it */
2183
2184 if (w->wd == wd || wd == -1)
2185 {
2186 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2187 {
2188 w->wd = -1;
2189 infy_add (EV_A_ w); /* re-add, no matter what */
2190 }
2191
2192 stat_timer_cb (EV_A_ &w->timer, 0);
2193 }
2194 }
2195 }
2196}
2197
2198static void
2199infy_cb (EV_P_ ev_io *w, int revents)
2200{
2201 char buf [EV_INOTIFY_BUFSIZE];
2202 struct inotify_event *ev = (struct inotify_event *)buf;
2203 int ofs;
2204 int len = read (fs_fd, buf, sizeof (buf));
2205
2206 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2207 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2208}
2209
2210void inline_size
2211infy_init (EV_P)
2212{
2213 if (fs_fd != -2)
2214 return;
2215
2216 fs_fd = inotify_init ();
2217
2218 if (fs_fd >= 0)
2219 {
2220 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2221 ev_set_priority (&fs_w, EV_MAXPRI);
2222 ev_io_start (EV_A_ &fs_w);
2223 }
2224}
2225
2226void inline_size
2227infy_fork (EV_P)
2228{
2229 int slot;
2230
2231 if (fs_fd < 0)
2232 return;
2233
2234 close (fs_fd);
2235 fs_fd = inotify_init ();
2236
2237 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2238 {
2239 WL w_ = fs_hash [slot].head;
2240 fs_hash [slot].head = 0;
2241
2242 while (w_)
2243 {
2244 ev_stat *w = (ev_stat *)w_;
2245 w_ = w_->next; /* lets us add this watcher */
2246
2247 w->wd = -1;
2248
2249 if (fs_fd >= 0)
2250 infy_add (EV_A_ w); /* re-add, no matter what */
2251 else
2252 ev_timer_start (EV_A_ &w->timer);
2253 }
2254
2255 }
2256}
2257
2258#endif
2259
2260void
2261ev_stat_stat (EV_P_ ev_stat *w)
2262{
2263 if (lstat (w->path, &w->attr) < 0)
2264 w->attr.st_nlink = 0;
2265 else if (!w->attr.st_nlink)
2266 w->attr.st_nlink = 1;
2267}
2268
2269static void noinline
2270stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2271{
2272 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2273
2274 /* we copy this here each the time so that */
2275 /* prev has the old value when the callback gets invoked */
2276 w->prev = w->attr;
2277 ev_stat_stat (EV_A_ w);
2278
2279 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2280 if (
2281 w->prev.st_dev != w->attr.st_dev
2282 || w->prev.st_ino != w->attr.st_ino
2283 || w->prev.st_mode != w->attr.st_mode
2284 || w->prev.st_nlink != w->attr.st_nlink
2285 || w->prev.st_uid != w->attr.st_uid
2286 || w->prev.st_gid != w->attr.st_gid
2287 || w->prev.st_rdev != w->attr.st_rdev
2288 || w->prev.st_size != w->attr.st_size
2289 || w->prev.st_atime != w->attr.st_atime
2290 || w->prev.st_mtime != w->attr.st_mtime
2291 || w->prev.st_ctime != w->attr.st_ctime
2292 ) {
2293 #if EV_USE_INOTIFY
2294 infy_del (EV_A_ w);
2295 infy_add (EV_A_ w);
2296 ev_stat_stat (EV_A_ w); /* avoid race... */
2297 #endif
2298
2299 ev_feed_event (EV_A_ w, EV_STAT);
2300 }
2301}
2302
2303void
2304ev_stat_start (EV_P_ ev_stat *w)
2305{
2306 if (expect_false (ev_is_active (w)))
2307 return;
2308
2309 /* since we use memcmp, we need to clear any padding data etc. */
2310 memset (&w->prev, 0, sizeof (ev_statdata));
2311 memset (&w->attr, 0, sizeof (ev_statdata));
2312
2313 ev_stat_stat (EV_A_ w);
2314
2315 if (w->interval < MIN_STAT_INTERVAL)
2316 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2317
2318 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2319 ev_set_priority (&w->timer, ev_priority (w));
2320
2321#if EV_USE_INOTIFY
2322 infy_init (EV_A);
2323
2324 if (fs_fd >= 0)
2325 infy_add (EV_A_ w);
2326 else
2327#endif
2328 ev_timer_start (EV_A_ &w->timer);
2329
2330 ev_start (EV_A_ (W)w, 1);
2331}
2332
2333void
2334ev_stat_stop (EV_P_ ev_stat *w)
2335{
2336 clear_pending (EV_A_ (W)w);
2337 if (expect_false (!ev_is_active (w)))
2338 return;
2339
2340#if EV_USE_INOTIFY
2341 infy_del (EV_A_ w);
2342#endif
2343 ev_timer_stop (EV_A_ &w->timer);
2344
2345 ev_stop (EV_A_ (W)w);
2346}
2347#endif
2348
2349#if EV_IDLE_ENABLE
1538void 2350void
1539ev_idle_start (EV_P_ ev_idle *w) 2351ev_idle_start (EV_P_ ev_idle *w)
1540{ 2352{
1541 if (expect_false (ev_is_active (w))) 2353 if (expect_false (ev_is_active (w)))
1542 return; 2354 return;
1543 2355
2356 pri_adjust (EV_A_ (W)w);
2357
2358 {
2359 int active = ++idlecnt [ABSPRI (w)];
2360
2361 ++idleall;
1544 ev_start (EV_A_ (W)w, ++idlecnt); 2362 ev_start (EV_A_ (W)w, active);
2363
1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2364 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1546 idles [idlecnt - 1] = w; 2365 idles [ABSPRI (w)][active - 1] = w;
2366 }
1547} 2367}
1548 2368
1549void 2369void
1550ev_idle_stop (EV_P_ ev_idle *w) 2370ev_idle_stop (EV_P_ ev_idle *w)
1551{ 2371{
1552 ev_clear_pending (EV_A_ (W)w); 2372 clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w))) 2373 if (expect_false (!ev_is_active (w)))
1554 return; 2374 return;
1555 2375
1556 idles [((W)w)->active - 1] = idles [--idlecnt]; 2376 {
2377 int active = ev_active (w);
2378
2379 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2380 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2381
1557 ev_stop (EV_A_ (W)w); 2382 ev_stop (EV_A_ (W)w);
2383 --idleall;
2384 }
1558} 2385}
2386#endif
1559 2387
1560void 2388void
1561ev_prepare_start (EV_P_ ev_prepare *w) 2389ev_prepare_start (EV_P_ ev_prepare *w)
1562{ 2390{
1563 if (expect_false (ev_is_active (w))) 2391 if (expect_false (ev_is_active (w)))
… …
1569} 2397}
1570 2398
1571void 2399void
1572ev_prepare_stop (EV_P_ ev_prepare *w) 2400ev_prepare_stop (EV_P_ ev_prepare *w)
1573{ 2401{
1574 ev_clear_pending (EV_A_ (W)w); 2402 clear_pending (EV_A_ (W)w);
1575 if (expect_false (!ev_is_active (w))) 2403 if (expect_false (!ev_is_active (w)))
1576 return; 2404 return;
1577 2405
2406 {
2407 int active = ev_active (w);
2408
1578 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 2409 prepares [active - 1] = prepares [--preparecnt];
2410 ev_active (prepares [active - 1]) = active;
2411 }
2412
1579 ev_stop (EV_A_ (W)w); 2413 ev_stop (EV_A_ (W)w);
1580} 2414}
1581 2415
1582void 2416void
1583ev_check_start (EV_P_ ev_check *w) 2417ev_check_start (EV_P_ ev_check *w)
… …
1591} 2425}
1592 2426
1593void 2427void
1594ev_check_stop (EV_P_ ev_check *w) 2428ev_check_stop (EV_P_ ev_check *w)
1595{ 2429{
1596 ev_clear_pending (EV_A_ (W)w); 2430 clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w))) 2431 if (expect_false (!ev_is_active (w)))
1598 return; 2432 return;
1599 2433
2434 {
2435 int active = ev_active (w);
2436
1600 checks [((W)w)->active - 1] = checks [--checkcnt]; 2437 checks [active - 1] = checks [--checkcnt];
2438 ev_active (checks [active - 1]) = active;
2439 }
2440
1601 ev_stop (EV_A_ (W)w); 2441 ev_stop (EV_A_ (W)w);
1602} 2442}
1603 2443
1604#ifndef SA_RESTART 2444#if EV_EMBED_ENABLE
1605# define SA_RESTART 0 2445void noinline
1606#endif
1607
1608void
1609ev_signal_start (EV_P_ ev_signal *w)
1610{
1611#if EV_MULTIPLICITY
1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613#endif
1614 if (expect_false (ev_is_active (w)))
1615 return;
1616
1617 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618
1619 ev_start (EV_A_ (W)w, 1);
1620 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1621 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1622
1623 if (!((WL)w)->next)
1624 {
1625#if _WIN32
1626 signal (w->signum, sighandler);
1627#else
1628 struct sigaction sa;
1629 sa.sa_handler = sighandler;
1630 sigfillset (&sa.sa_mask);
1631 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1632 sigaction (w->signum, &sa, 0);
1633#endif
1634 }
1635}
1636
1637void
1638ev_signal_stop (EV_P_ ev_signal *w)
1639{
1640 ev_clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w)))
1642 return;
1643
1644 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1645 ev_stop (EV_A_ (W)w);
1646
1647 if (!signals [w->signum - 1].head)
1648 signal (w->signum, SIG_DFL);
1649}
1650
1651void
1652ev_child_start (EV_P_ ev_child *w)
1653{
1654#if EV_MULTIPLICITY
1655 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656#endif
1657 if (expect_false (ev_is_active (w)))
1658 return;
1659
1660 ev_start (EV_A_ (W)w, 1);
1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1662}
1663
1664void
1665ev_child_stop (EV_P_ ev_child *w)
1666{
1667 ev_clear_pending (EV_A_ (W)w);
1668 if (expect_false (!ev_is_active (w)))
1669 return;
1670
1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1672 ev_stop (EV_A_ (W)w);
1673}
1674
1675#if EV_MULTIPLICITY
1676void
1677ev_embed_loop (EV_P_ ev_embed *w) 2446ev_embed_sweep (EV_P_ ev_embed *w)
1678{ 2447{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK); 2448 ev_loop (w->other, EVLOOP_NONBLOCK);
1680} 2449}
1681 2450
1682static void 2451static void
1683embed_cb (EV_P_ ev_io *io, int revents) 2452embed_io_cb (EV_P_ ev_io *io, int revents)
1684{ 2453{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2454 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686 2455
1687 if (ev_cb (w)) 2456 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2457 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else 2458 else
1690 ev_embed_loop (loop, w); 2459 ev_loop (w->other, EVLOOP_NONBLOCK);
1691} 2460}
2461
2462static void
2463embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2464{
2465 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2466
2467 {
2468 struct ev_loop *loop = w->other;
2469
2470 while (fdchangecnt)
2471 {
2472 fd_reify (EV_A);
2473 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2474 }
2475 }
2476}
2477
2478#if 0
2479static void
2480embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2481{
2482 ev_idle_stop (EV_A_ idle);
2483}
2484#endif
1692 2485
1693void 2486void
1694ev_embed_start (EV_P_ ev_embed *w) 2487ev_embed_start (EV_P_ ev_embed *w)
1695{ 2488{
1696 if (expect_false (ev_is_active (w))) 2489 if (expect_false (ev_is_active (w)))
1697 return; 2490 return;
1698 2491
1699 { 2492 {
1700 struct ev_loop *loop = w->loop; 2493 struct ev_loop *loop = w->other;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2494 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2495 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1703 } 2496 }
1704 2497
1705 ev_set_priority (&w->io, ev_priority (w)); 2498 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io); 2499 ev_io_start (EV_A_ &w->io);
2500
2501 ev_prepare_init (&w->prepare, embed_prepare_cb);
2502 ev_set_priority (&w->prepare, EV_MINPRI);
2503 ev_prepare_start (EV_A_ &w->prepare);
2504
2505 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2506
1707 ev_start (EV_A_ (W)w, 1); 2507 ev_start (EV_A_ (W)w, 1);
1708} 2508}
1709 2509
1710void 2510void
1711ev_embed_stop (EV_P_ ev_embed *w) 2511ev_embed_stop (EV_P_ ev_embed *w)
1712{ 2512{
1713 ev_clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
1715 return; 2515 return;
1716 2516
1717 ev_io_stop (EV_A_ &w->io); 2517 ev_io_stop (EV_A_ &w->io);
2518 ev_prepare_stop (EV_A_ &w->prepare);
2519
1718 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
2521}
2522#endif
2523
2524#if EV_FORK_ENABLE
2525void
2526ev_fork_start (EV_P_ ev_fork *w)
2527{
2528 if (expect_false (ev_is_active (w)))
2529 return;
2530
2531 ev_start (EV_A_ (W)w, ++forkcnt);
2532 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2533 forks [forkcnt - 1] = w;
2534}
2535
2536void
2537ev_fork_stop (EV_P_ ev_fork *w)
2538{
2539 clear_pending (EV_A_ (W)w);
2540 if (expect_false (!ev_is_active (w)))
2541 return;
2542
2543 {
2544 int active = ev_active (w);
2545
2546 forks [active - 1] = forks [--forkcnt];
2547 ev_active (forks [active - 1]) = active;
2548 }
2549
2550 ev_stop (EV_A_ (W)w);
2551}
2552#endif
2553
2554#if EV_ASYNC_ENABLE
2555void
2556ev_async_start (EV_P_ ev_async *w)
2557{
2558 if (expect_false (ev_is_active (w)))
2559 return;
2560
2561 evpipe_init (EV_A);
2562
2563 ev_start (EV_A_ (W)w, ++asynccnt);
2564 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2565 asyncs [asynccnt - 1] = w;
2566}
2567
2568void
2569ev_async_stop (EV_P_ ev_async *w)
2570{
2571 clear_pending (EV_A_ (W)w);
2572 if (expect_false (!ev_is_active (w)))
2573 return;
2574
2575 {
2576 int active = ev_active (w);
2577
2578 asyncs [active - 1] = asyncs [--asynccnt];
2579 ev_active (asyncs [active - 1]) = active;
2580 }
2581
2582 ev_stop (EV_A_ (W)w);
2583}
2584
2585void
2586ev_async_send (EV_P_ ev_async *w)
2587{
2588 w->sent = 1;
2589 evpipe_write (EV_A_ &gotasync);
1719} 2590}
1720#endif 2591#endif
1721 2592
1722/*****************************************************************************/ 2593/*****************************************************************************/
1723 2594
… …
1781 ev_timer_set (&once->to, timeout, 0.); 2652 ev_timer_set (&once->to, timeout, 0.);
1782 ev_timer_start (EV_A_ &once->to); 2653 ev_timer_start (EV_A_ &once->to);
1783 } 2654 }
1784} 2655}
1785 2656
2657#if EV_MULTIPLICITY
2658 #include "ev_wrap.h"
2659#endif
2660
1786#ifdef __cplusplus 2661#ifdef __cplusplus
1787} 2662}
1788#endif 2663#endif
1789 2664

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