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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 1.229 by root, Fri May 2 08:08:45 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
525int inline_size
526array_nextsize (int elem, int cur, int cnt)
527{
528 int ncur = cur + 1;
529
530 do
531 ncur <<= 1;
532 while (cnt > ncur);
533
534 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
535 if (elem * ncur > 4096)
536 {
537 ncur *= elem;
538 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
539 ncur = ncur - sizeof (void *) * 4;
540 ncur /= elem;
541 }
542
543 return ncur;
544}
545
546static noinline void *
547array_realloc (int elem, void *base, int *cur, int cnt)
548{
549 *cur = array_nextsize (elem, *cur, cnt);
550 return ev_realloc (base, elem * *cur);
551}
349 552
350#define array_needsize(type,base,cur,cnt,init) \ 553#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 554 if (expect_false ((cnt) > (cur))) \
352 { \ 555 { \
353 int newcnt = cur; \ 556 int ocur_ = (cur); \
354 do \ 557 (base) = (type *)array_realloc \
355 { \ 558 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 559 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 } 560 }
364 561
562#if 0
365#define array_slim(type,stem) \ 563#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 564 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 565 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 566 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 567 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 568 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 569 }
570#endif
372 571
373#define array_free(stem, idx) \ 572#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 573 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 574
376/*****************************************************************************/ 575/*****************************************************************************/
377 576
378static void 577void noinline
578ev_feed_event (EV_P_ void *w, int revents)
579{
580 W w_ = (W)w;
581 int pri = ABSPRI (w_);
582
583 if (expect_false (w_->pending))
584 pendings [pri][w_->pending - 1].events |= revents;
585 else
586 {
587 w_->pending = ++pendingcnt [pri];
588 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
589 pendings [pri][w_->pending - 1].w = w_;
590 pendings [pri][w_->pending - 1].events = revents;
591 }
592}
593
594void inline_speed
595queue_events (EV_P_ W *events, int eventcnt, int type)
596{
597 int i;
598
599 for (i = 0; i < eventcnt; ++i)
600 ev_feed_event (EV_A_ events [i], type);
601}
602
603/*****************************************************************************/
604
605void inline_size
379anfds_init (ANFD *base, int count) 606anfds_init (ANFD *base, int count)
380{ 607{
381 while (count--) 608 while (count--)
382 { 609 {
383 base->head = 0; 610 base->head = 0;
… …
386 613
387 ++base; 614 ++base;
388 } 615 }
389} 616}
390 617
391void 618void 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) 619fd_event (EV_P_ int fd, int revents)
419{ 620{
420 ANFD *anfd = anfds + fd; 621 ANFD *anfd = anfds + fd;
421 ev_io *w; 622 ev_io *w;
422 623
… …
430} 631}
431 632
432void 633void
433ev_feed_fd_event (EV_P_ int fd, int revents) 634ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 635{
636 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 637 fd_event (EV_A_ fd, revents);
436} 638}
437 639
438/*****************************************************************************/ 640void inline_size
439
440inline void
441fd_reify (EV_P) 641fd_reify (EV_P)
442{ 642{
443 int i; 643 int i;
444 644
445 for (i = 0; i < fdchangecnt; ++i) 645 for (i = 0; i < fdchangecnt; ++i)
446 { 646 {
447 int fd = fdchanges [i]; 647 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 648 ANFD *anfd = anfds + fd;
449 ev_io *w; 649 ev_io *w;
450 650
451 int events = 0; 651 unsigned char events = 0;
452 652
453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 653 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 654 events |= (unsigned char)w->events;
455 655
456#if EV_SELECT_IS_WINSOCKET 656#if EV_SELECT_IS_WINSOCKET
457 if (events) 657 if (events)
458 { 658 {
459 unsigned long argp; 659 unsigned long argp;
660 #ifdef EV_FD_TO_WIN32_HANDLE
661 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
662 #else
460 anfd->handle = _get_osfhandle (fd); 663 anfd->handle = _get_osfhandle (fd);
664 #endif
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 665 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
462 } 666 }
463#endif 667#endif
464 668
669 {
670 unsigned char o_events = anfd->events;
671 unsigned char o_reify = anfd->reify;
672
465 anfd->reify = 0; 673 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 anfd->events = events; 674 anfd->events = events;
675
676 if (o_events != events || o_reify & EV_IOFDSET)
677 backend_modify (EV_A_ fd, o_events, events);
678 }
469 } 679 }
470 680
471 fdchangecnt = 0; 681 fdchangecnt = 0;
472} 682}
473 683
474static void 684void inline_size
475fd_change (EV_P_ int fd) 685fd_change (EV_P_ int fd, int flags)
476{ 686{
477 if (expect_false (anfds [fd].reify)) 687 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 688 anfds [fd].reify |= flags;
481 689
690 if (expect_true (!reify))
691 {
482 ++fdchangecnt; 692 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 693 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 694 fdchanges [fdchangecnt - 1] = fd;
695 }
485} 696}
486 697
487static void 698void inline_speed
488fd_kill (EV_P_ int fd) 699fd_kill (EV_P_ int fd)
489{ 700{
490 ev_io *w; 701 ev_io *w;
491 702
492 while ((w = (ev_io *)anfds [fd].head)) 703 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 705 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 706 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 707 }
497} 708}
498 709
499inline int 710int inline_size
500fd_valid (int fd) 711fd_valid (int fd)
501{ 712{
502#ifdef _WIN32 713#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 714 return _get_osfhandle (fd) != -1;
504#else 715#else
505 return fcntl (fd, F_GETFD) != -1; 716 return fcntl (fd, F_GETFD) != -1;
506#endif 717#endif
507} 718}
508 719
509/* called on EBADF to verify fds */ 720/* called on EBADF to verify fds */
510static void 721static void noinline
511fd_ebadf (EV_P) 722fd_ebadf (EV_P)
512{ 723{
513 int fd; 724 int fd;
514 725
515 for (fd = 0; fd < anfdmax; ++fd) 726 for (fd = 0; fd < anfdmax; ++fd)
… …
517 if (!fd_valid (fd) == -1 && errno == EBADF) 728 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 729 fd_kill (EV_A_ fd);
519} 730}
520 731
521/* called on ENOMEM in select/poll to kill some fds and retry */ 732/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 733static void noinline
523fd_enomem (EV_P) 734fd_enomem (EV_P)
524{ 735{
525 int fd; 736 int fd;
526 737
527 for (fd = anfdmax; fd--; ) 738 for (fd = anfdmax; fd--; )
… …
531 return; 742 return;
532 } 743 }
533} 744}
534 745
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 746/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 747static void noinline
537fd_rearm_all (EV_P) 748fd_rearm_all (EV_P)
538{ 749{
539 int fd; 750 int fd;
540 751
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 752 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 753 if (anfds [fd].events)
544 { 754 {
545 anfds [fd].events = 0; 755 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 756 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 757 }
548} 758}
549 759
550/*****************************************************************************/ 760/*****************************************************************************/
551 761
552static void 762/* towards the root */
763void inline_speed
553upheap (WT *heap, int k) 764upheap (WT *heap, int k)
554{ 765{
555 WT w = heap [k]; 766 WT w = heap [k];
556 767
557 while (k && heap [k >> 1]->at > w->at) 768 for (;;)
558 { 769 {
770 int p = k >> 1;
771
772 /* maybe we could use a dummy element at heap [0]? */
773 if (!p || heap [p]->at <= w->at)
774 break;
775
559 heap [k] = heap [k >> 1]; 776 heap [k] = heap [p];
560 ((W)heap [k])->active = k + 1; 777 ((W)heap [k])->active = k;
561 k >>= 1; 778 k = p;
562 } 779 }
563 780
564 heap [k] = w; 781 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 782 ((W)heap [k])->active = k;
566
567} 783}
568 784
569static void 785/* away from the root */
786void inline_speed
570downheap (WT *heap, int N, int k) 787downheap (WT *heap, int N, int k)
571{ 788{
572 WT w = heap [k]; 789 WT w = heap [k];
573 790
574 while (k < (N >> 1)) 791 for (;;)
575 { 792 {
576 int j = k << 1; 793 int c = k << 1;
577 794
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 795 if (c > N)
579 ++j;
580
581 if (w->at <= heap [j]->at)
582 break; 796 break;
583 797
798 c += c < N && heap [c]->at > heap [c + 1]->at
799 ? 1 : 0;
800
801 if (w->at <= heap [c]->at)
802 break;
803
584 heap [k] = heap [j]; 804 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 805 ((W)heap [k])->active = k;
806
586 k = j; 807 k = c;
587 } 808 }
588 809
589 heap [k] = w; 810 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 811 ((W)heap [k])->active = k;
591} 812}
592 813
593inline void 814void inline_size
594adjustheap (WT *heap, int N, int k) 815adjustheap (WT *heap, int N, int k)
595{ 816{
596 upheap (heap, k); 817 upheap (heap, k);
597 downheap (heap, N, k); 818 downheap (heap, N, k);
598} 819}
… …
600/*****************************************************************************/ 821/*****************************************************************************/
601 822
602typedef struct 823typedef struct
603{ 824{
604 WL head; 825 WL head;
605 sig_atomic_t volatile gotsig; 826 EV_ATOMIC_T gotsig;
606} ANSIG; 827} ANSIG;
607 828
608static ANSIG *signals; 829static ANSIG *signals;
609static int signalmax; 830static int signalmax;
610 831
611static int sigpipe [2]; 832static EV_ATOMIC_T gotsig;
612static sig_atomic_t volatile gotsig;
613static ev_io sigev;
614 833
615static void 834void inline_size
616signals_init (ANSIG *base, int count) 835signals_init (ANSIG *base, int count)
617{ 836{
618 while (count--) 837 while (count--)
619 { 838 {
620 base->head = 0; 839 base->head = 0;
… …
622 841
623 ++base; 842 ++base;
624 } 843 }
625} 844}
626 845
627static void 846/*****************************************************************************/
628sighandler (int signum)
629{
630#if _WIN32
631 signal (signum, sighandler);
632#endif
633 847
634 signals [signum - 1].gotsig = 1; 848void 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) 849fd_intern (int fd)
680{ 850{
681#ifdef _WIN32 851#ifdef _WIN32
682 int arg = 1; 852 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 853 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 855 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 856 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 857#endif
688} 858}
689 859
860static void noinline
861evpipe_init (EV_P)
862{
863 if (!ev_is_active (&pipeev))
864 {
865#if EV_USE_EVENTFD
866 if ((evfd = eventfd (0, 0)) >= 0)
867 {
868 evpipe [0] = -1;
869 fd_intern (evfd);
870 ev_io_set (&pipeev, evfd, EV_READ);
871 }
872 else
873#endif
874 {
875 while (pipe (evpipe))
876 syserr ("(libev) error creating signal/async pipe");
877
878 fd_intern (evpipe [0]);
879 fd_intern (evpipe [1]);
880 ev_io_set (&pipeev, evpipe [0], EV_READ);
881 }
882
883 ev_io_start (EV_A_ &pipeev);
884 ev_unref (EV_A); /* watcher should not keep loop alive */
885 }
886}
887
888void inline_size
889evpipe_write (EV_P_ EV_ATOMIC_T *flag)
890{
891 if (!*flag)
892 {
893 int old_errno = errno; /* save errno because write might clobber it */
894
895 *flag = 1;
896
897#if EV_USE_EVENTFD
898 if (evfd >= 0)
899 {
900 uint64_t counter = 1;
901 write (evfd, &counter, sizeof (uint64_t));
902 }
903 else
904#endif
905 write (evpipe [1], &old_errno, 1);
906
907 errno = old_errno;
908 }
909}
910
690static void 911static void
691siginit (EV_P) 912pipecb (EV_P_ ev_io *iow, int revents)
692{ 913{
693 fd_intern (sigpipe [0]); 914#if EV_USE_EVENTFD
694 fd_intern (sigpipe [1]); 915 if (evfd >= 0)
916 {
917 uint64_t counter = 1;
918 read (evfd, &counter, sizeof (uint64_t));
919 }
920 else
921#endif
922 {
923 char dummy;
924 read (evpipe [0], &dummy, 1);
925 }
695 926
696 ev_io_set (&sigev, sigpipe [0], EV_READ); 927 if (gotsig && ev_is_default_loop (EV_A))
697 ev_io_start (EV_A_ &sigev); 928 {
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 929 int signum;
930 gotsig = 0;
931
932 for (signum = signalmax; signum--; )
933 if (signals [signum].gotsig)
934 ev_feed_signal_event (EV_A_ signum + 1);
935 }
936
937#if EV_ASYNC_ENABLE
938 if (gotasync)
939 {
940 int i;
941 gotasync = 0;
942
943 for (i = asynccnt; i--; )
944 if (asyncs [i]->sent)
945 {
946 asyncs [i]->sent = 0;
947 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
948 }
949 }
950#endif
699} 951}
700 952
701/*****************************************************************************/ 953/*****************************************************************************/
702 954
955static void
956ev_sighandler (int signum)
957{
958#if EV_MULTIPLICITY
959 struct ev_loop *loop = &default_loop_struct;
960#endif
961
962#if _WIN32
963 signal (signum, ev_sighandler);
964#endif
965
966 signals [signum - 1].gotsig = 1;
967 evpipe_write (EV_A_ &gotsig);
968}
969
970void noinline
971ev_feed_signal_event (EV_P_ int signum)
972{
973 WL w;
974
975#if EV_MULTIPLICITY
976 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
977#endif
978
979 --signum;
980
981 if (signum < 0 || signum >= signalmax)
982 return;
983
984 signals [signum].gotsig = 0;
985
986 for (w = signals [signum].head; w; w = w->next)
987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
988}
989
990/*****************************************************************************/
991
703static ev_child *childs [PID_HASHSIZE]; 992static WL childs [EV_PID_HASHSIZE];
704 993
705#ifndef _WIN32 994#ifndef _WIN32
706 995
707static ev_signal childev; 996static ev_signal childev;
997
998#ifndef WIFCONTINUED
999# define WIFCONTINUED(status) 0
1000#endif
1001
1002void inline_speed
1003child_reap (EV_P_ int chain, int pid, int status)
1004{
1005 ev_child *w;
1006 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1007
1008 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1009 {
1010 if ((w->pid == pid || !w->pid)
1011 && (!traced || (w->flags & 1)))
1012 {
1013 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1014 w->rpid = pid;
1015 w->rstatus = status;
1016 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1017 }
1018 }
1019}
708 1020
709#ifndef WCONTINUED 1021#ifndef WCONTINUED
710# define WCONTINUED 0 1022# define WCONTINUED 0
711#endif 1023#endif
712 1024
713static void 1025static 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) 1026childcb (EV_P_ ev_signal *sw, int revents)
730{ 1027{
731 int pid, status; 1028 int pid, status;
732 1029
1030 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1031 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 1032 if (!WCONTINUED
1033 || errno != EINVAL
1034 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1035 return;
1036
735 /* make sure we are called again until all childs have been reaped */ 1037 /* 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 */ 1038 /* 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); 1039 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 1040
739 child_reap (EV_A_ sw, pid, pid, status); 1041 child_reap (EV_A_ pid, pid, status);
1042 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 */ 1043 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 1044}
743 1045
744#endif 1046#endif
745 1047
746/*****************************************************************************/ 1048/*****************************************************************************/
… …
772{ 1074{
773 return EV_VERSION_MINOR; 1075 return EV_VERSION_MINOR;
774} 1076}
775 1077
776/* return true if we are running with elevated privileges and should ignore env variables */ 1078/* return true if we are running with elevated privileges and should ignore env variables */
777static int 1079int inline_size
778enable_secure (void) 1080enable_secure (void)
779{ 1081{
780#ifdef _WIN32 1082#ifdef _WIN32
781 return 0; 1083 return 0;
782#else 1084#else
… …
818} 1120}
819 1121
820unsigned int 1122unsigned int
821ev_embeddable_backends (void) 1123ev_embeddable_backends (void)
822{ 1124{
823 return EVBACKEND_EPOLL 1125 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
824 | EVBACKEND_KQUEUE 1126
825 | EVBACKEND_PORT; 1127 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1128 /* please fix it and tell me how to detect the fix */
1129 flags &= ~EVBACKEND_EPOLL;
1130
1131 return flags;
826} 1132}
827 1133
828unsigned int 1134unsigned int
829ev_backend (EV_P) 1135ev_backend (EV_P)
830{ 1136{
831 return backend; 1137 return backend;
832} 1138}
833 1139
834static void 1140unsigned int
1141ev_loop_count (EV_P)
1142{
1143 return loop_count;
1144}
1145
1146void
1147ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1148{
1149 io_blocktime = interval;
1150}
1151
1152void
1153ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1154{
1155 timeout_blocktime = interval;
1156}
1157
1158static void noinline
835loop_init (EV_P_ unsigned int flags) 1159loop_init (EV_P_ unsigned int flags)
836{ 1160{
837 if (!backend) 1161 if (!backend)
838 { 1162 {
839#if EV_USE_MONOTONIC 1163#if EV_USE_MONOTONIC
… …
842 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1166 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
843 have_monotonic = 1; 1167 have_monotonic = 1;
844 } 1168 }
845#endif 1169#endif
846 1170
847 ev_rt_now = ev_time (); 1171 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1172 mn_now = get_clock ();
849 now_floor = mn_now; 1173 now_floor = mn_now;
850 rtmn_diff = ev_rt_now - mn_now; 1174 rtmn_diff = ev_rt_now - mn_now;
1175
1176 io_blocktime = 0.;
1177 timeout_blocktime = 0.;
1178 backend = 0;
1179 backend_fd = -1;
1180 gotasync = 0;
1181#if EV_USE_INOTIFY
1182 fs_fd = -2;
1183#endif
1184
1185 /* pid check not overridable via env */
1186#ifndef _WIN32
1187 if (flags & EVFLAG_FORKCHECK)
1188 curpid = getpid ();
1189#endif
851 1190
852 if (!(flags & EVFLAG_NOENV) 1191 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1192 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1193 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1194 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1195
857 if (!(flags & 0x0000ffffUL)) 1196 if (!(flags & 0x0000ffffU))
858 flags |= ev_recommended_backends (); 1197 flags |= ev_recommended_backends ();
859 1198
860 backend = 0;
861#if EV_USE_PORT 1199#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1200 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1201#endif
864#if EV_USE_KQUEUE 1202#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1203 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
872#endif 1210#endif
873#if EV_USE_SELECT 1211#if EV_USE_SELECT
874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1212 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
875#endif 1213#endif
876 1214
877 ev_init (&sigev, sigcb); 1215 ev_init (&pipeev, pipecb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1216 ev_set_priority (&pipeev, EV_MAXPRI);
879 } 1217 }
880} 1218}
881 1219
882static void 1220static void noinline
883loop_destroy (EV_P) 1221loop_destroy (EV_P)
884{ 1222{
885 int i; 1223 int i;
1224
1225 if (ev_is_active (&pipeev))
1226 {
1227 ev_ref (EV_A); /* signal watcher */
1228 ev_io_stop (EV_A_ &pipeev);
1229
1230#if EV_USE_EVENTFD
1231 if (evfd >= 0)
1232 close (evfd);
1233#endif
1234
1235 if (evpipe [0] >= 0)
1236 {
1237 close (evpipe [0]);
1238 close (evpipe [1]);
1239 }
1240 }
1241
1242#if EV_USE_INOTIFY
1243 if (fs_fd >= 0)
1244 close (fs_fd);
1245#endif
1246
1247 if (backend_fd >= 0)
1248 close (backend_fd);
886 1249
887#if EV_USE_PORT 1250#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1251 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1252#endif
890#if EV_USE_KQUEUE 1253#if EV_USE_KQUEUE
… …
899#if EV_USE_SELECT 1262#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1263 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1264#endif
902 1265
903 for (i = NUMPRI; i--; ) 1266 for (i = NUMPRI; i--; )
1267 {
904 array_free (pending, [i]); 1268 array_free (pending, [i]);
1269#if EV_IDLE_ENABLE
1270 array_free (idle, [i]);
1271#endif
1272 }
1273
1274 ev_free (anfds); anfdmax = 0;
905 1275
906 /* have to use the microsoft-never-gets-it-right macro */ 1276 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1277 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1278 array_free (timer, EMPTY);
909#if EV_PERIODICS 1279#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1280 array_free (periodic, EMPTY);
911#endif 1281#endif
1282#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1283 array_free (fork, EMPTY);
1284#endif
913 array_free (prepare, EMPTY0); 1285 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1286 array_free (check, EMPTY);
1287#if EV_ASYNC_ENABLE
1288 array_free (async, EMPTY);
1289#endif
915 1290
916 backend = 0; 1291 backend = 0;
917} 1292}
918 1293
919static void 1294#if EV_USE_INOTIFY
1295void inline_size infy_fork (EV_P);
1296#endif
1297
1298void inline_size
920loop_fork (EV_P) 1299loop_fork (EV_P)
921{ 1300{
922#if EV_USE_PORT 1301#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1302 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1303#endif
… …
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1305 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1306#endif
928#if EV_USE_EPOLL 1307#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1308 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
930#endif 1309#endif
1310#if EV_USE_INOTIFY
1311 infy_fork (EV_A);
1312#endif
931 1313
932 if (ev_is_active (&sigev)) 1314 if (ev_is_active (&pipeev))
933 { 1315 {
934 /* default loop */ 1316 /* this "locks" the handlers against writing to the pipe */
1317 /* while we modify the fd vars */
1318 gotsig = 1;
1319#if EV_ASYNC_ENABLE
1320 gotasync = 1;
1321#endif
935 1322
936 ev_ref (EV_A); 1323 ev_ref (EV_A);
937 ev_io_stop (EV_A_ &sigev); 1324 ev_io_stop (EV_A_ &pipeev);
1325
1326#if EV_USE_EVENTFD
1327 if (evfd >= 0)
1328 close (evfd);
1329#endif
1330
1331 if (evpipe [0] >= 0)
1332 {
938 close (sigpipe [0]); 1333 close (evpipe [0]);
939 close (sigpipe [1]); 1334 close (evpipe [1]);
1335 }
940 1336
941 while (pipe (sigpipe))
942 syserr ("(libev) error creating pipe");
943
944 siginit (EV_A); 1337 evpipe_init (EV_A);
1338 /* now iterate over everything, in case we missed something */
1339 pipecb (EV_A_ &pipeev, EV_READ);
945 } 1340 }
946 1341
947 postfork = 0; 1342 postfork = 0;
948} 1343}
949 1344
… …
971} 1366}
972 1367
973void 1368void
974ev_loop_fork (EV_P) 1369ev_loop_fork (EV_P)
975{ 1370{
976 postfork = 1; 1371 postfork = 1; /* must be in line with ev_default_fork */
977} 1372}
978 1373
979#endif 1374#endif
980 1375
981#if EV_MULTIPLICITY 1376#if EV_MULTIPLICITY
… …
984#else 1379#else
985int 1380int
986ev_default_loop (unsigned int flags) 1381ev_default_loop (unsigned int flags)
987#endif 1382#endif
988{ 1383{
989 if (sigpipe [0] == sigpipe [1])
990 if (pipe (sigpipe))
991 return 0;
992
993 if (!ev_default_loop_ptr) 1384 if (!ev_default_loop_ptr)
994 { 1385 {
995#if EV_MULTIPLICITY 1386#if EV_MULTIPLICITY
996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1387 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
997#else 1388#else
… …
1000 1391
1001 loop_init (EV_A_ flags); 1392 loop_init (EV_A_ flags);
1002 1393
1003 if (ev_backend (EV_A)) 1394 if (ev_backend (EV_A))
1004 { 1395 {
1005 siginit (EV_A);
1006
1007#ifndef _WIN32 1396#ifndef _WIN32
1008 ev_signal_init (&childev, childcb, SIGCHLD); 1397 ev_signal_init (&childev, childcb, SIGCHLD);
1009 ev_set_priority (&childev, EV_MAXPRI); 1398 ev_set_priority (&childev, EV_MAXPRI);
1010 ev_signal_start (EV_A_ &childev); 1399 ev_signal_start (EV_A_ &childev);
1011 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1400 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1028#ifndef _WIN32 1417#ifndef _WIN32
1029 ev_ref (EV_A); /* child watcher */ 1418 ev_ref (EV_A); /* child watcher */
1030 ev_signal_stop (EV_A_ &childev); 1419 ev_signal_stop (EV_A_ &childev);
1031#endif 1420#endif
1032 1421
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); 1422 loop_destroy (EV_A);
1040} 1423}
1041 1424
1042void 1425void
1043ev_default_fork (void) 1426ev_default_fork (void)
… …
1045#if EV_MULTIPLICITY 1428#if EV_MULTIPLICITY
1046 struct ev_loop *loop = ev_default_loop_ptr; 1429 struct ev_loop *loop = ev_default_loop_ptr;
1047#endif 1430#endif
1048 1431
1049 if (backend) 1432 if (backend)
1050 postfork = 1; 1433 postfork = 1; /* must be in line with ev_loop_fork */
1051} 1434}
1052 1435
1053/*****************************************************************************/ 1436/*****************************************************************************/
1054 1437
1055static int 1438void
1056any_pending (EV_P) 1439ev_invoke (EV_P_ void *w, int revents)
1057{ 1440{
1058 int pri; 1441 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1442}
1066 1443
1067inline void 1444void inline_speed
1068call_pending (EV_P) 1445call_pending (EV_P)
1069{ 1446{
1070 int pri; 1447 int pri;
1071 1448
1072 for (pri = NUMPRI; pri--; ) 1449 for (pri = NUMPRI; pri--; )
… …
1074 { 1451 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1452 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1453
1077 if (expect_true (p->w)) 1454 if (expect_true (p->w))
1078 { 1455 {
1456 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1457
1079 p->w->pending = 0; 1458 p->w->pending = 0;
1080 EV_CB_INVOKE (p->w, p->events); 1459 EV_CB_INVOKE (p->w, p->events);
1081 } 1460 }
1082 } 1461 }
1083} 1462}
1084 1463
1085inline void 1464void inline_size
1086timers_reify (EV_P) 1465timers_reify (EV_P)
1087{ 1466{
1088 while (timercnt && ((WT)timers [0])->at <= mn_now) 1467 while (timercnt && ev_at (timers [1]) <= mn_now)
1089 { 1468 {
1090 ev_timer *w = timers [0]; 1469 ev_timer *w = (ev_timer *)timers [1];
1091 1470
1092 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1471 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1093 1472
1094 /* first reschedule or stop timer */ 1473 /* first reschedule or stop timer */
1095 if (w->repeat) 1474 if (w->repeat)
1096 { 1475 {
1097 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1476 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1098 1477
1099 ((WT)w)->at += w->repeat; 1478 ev_at (w) += w->repeat;
1100 if (((WT)w)->at < mn_now) 1479 if (ev_at (w) < mn_now)
1101 ((WT)w)->at = mn_now; 1480 ev_at (w) = mn_now;
1102 1481
1103 downheap ((WT *)timers, timercnt, 0); 1482 downheap (timers, timercnt, 1);
1104 } 1483 }
1105 else 1484 else
1106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1485 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1107 1486
1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1487 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109 } 1488 }
1110} 1489}
1111 1490
1112#if EV_PERIODICS 1491#if EV_PERIODIC_ENABLE
1113inline void 1492void inline_size
1114periodics_reify (EV_P) 1493periodics_reify (EV_P)
1115{ 1494{
1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1495 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1117 { 1496 {
1118 ev_periodic *w = periodics [0]; 1497 ev_periodic *w = (ev_periodic *)periodics [1];
1119 1498
1120 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1499 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1121 1500
1122 /* first reschedule or stop timer */ 1501 /* first reschedule or stop timer */
1123 if (w->reschedule_cb) 1502 if (w->reschedule_cb)
1124 { 1503 {
1125 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1504 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)); 1505 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1127 downheap ((WT *)periodics, periodiccnt, 0); 1506 downheap (periodics, periodiccnt, 1);
1128 } 1507 }
1129 else if (w->interval) 1508 else if (w->interval)
1130 { 1509 {
1131 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1510 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511 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)); 1512 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); 1513 downheap (periodics, periodiccnt, 1);
1134 } 1514 }
1135 else 1515 else
1136 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1516 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1137 1517
1138 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1518 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139 } 1519 }
1140} 1520}
1141 1521
1142static void 1522static void noinline
1143periodics_reschedule (EV_P) 1523periodics_reschedule (EV_P)
1144{ 1524{
1145 int i; 1525 int i;
1146 1526
1147 /* adjust periodics after time jump */ 1527 /* adjust periodics after time jump */
1148 for (i = 0; i < periodiccnt; ++i) 1528 for (i = 0; i < periodiccnt; ++i)
1149 { 1529 {
1150 ev_periodic *w = periodics [i]; 1530 ev_periodic *w = (ev_periodic *)periodics [i];
1151 1531
1152 if (w->reschedule_cb) 1532 if (w->reschedule_cb)
1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1533 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1154 else if (w->interval) 1534 else if (w->interval)
1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1535 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1156 } 1536 }
1157 1537
1158 /* now rebuild the heap */ 1538 /* now rebuild the heap */
1159 for (i = periodiccnt >> 1; i--; ) 1539 for (i = periodiccnt >> 1; i--; )
1160 downheap ((WT *)periodics, periodiccnt, i); 1540 downheap (periodics, periodiccnt, i);
1161} 1541}
1162#endif 1542#endif
1163 1543
1164inline int 1544#if EV_IDLE_ENABLE
1165time_update_monotonic (EV_P) 1545void inline_size
1546idle_reify (EV_P)
1166{ 1547{
1548 if (expect_false (idleall))
1549 {
1550 int pri;
1551
1552 for (pri = NUMPRI; pri--; )
1553 {
1554 if (pendingcnt [pri])
1555 break;
1556
1557 if (idlecnt [pri])
1558 {
1559 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1560 break;
1561 }
1562 }
1563 }
1564}
1565#endif
1566
1567void inline_speed
1568time_update (EV_P_ ev_tstamp max_block)
1569{
1570 int i;
1571
1572#if EV_USE_MONOTONIC
1573 if (expect_true (have_monotonic))
1574 {
1575 ev_tstamp odiff = rtmn_diff;
1576
1167 mn_now = get_clock (); 1577 mn_now = get_clock ();
1168 1578
1579 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1580 /* interpolate in the meantime */
1169 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1581 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1170 { 1582 {
1171 ev_rt_now = rtmn_diff + mn_now; 1583 ev_rt_now = rtmn_diff + mn_now;
1172 return 0; 1584 return;
1173 } 1585 }
1174 else 1586
1175 {
1176 now_floor = mn_now; 1587 now_floor = mn_now;
1177 ev_rt_now = ev_time (); 1588 ev_rt_now = ev_time ();
1178 return 1;
1179 }
1180}
1181 1589
1182inline void 1590 /* loop a few times, before making important decisions.
1183time_update (EV_P) 1591 * on the choice of "4": one iteration isn't enough,
1184{ 1592 * in case we get preempted during the calls to
1185 int i; 1593 * ev_time and get_clock. a second call is almost guaranteed
1186 1594 * to succeed in that case, though. and looping a few more times
1187#if EV_USE_MONOTONIC 1595 * doesn't hurt either as we only do this on time-jumps or
1188 if (expect_true (have_monotonic)) 1596 * in the unlikely event of having been preempted here.
1189 { 1597 */
1190 if (time_update_monotonic (EV_A)) 1598 for (i = 4; --i; )
1191 { 1599 {
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; 1600 rtmn_diff = ev_rt_now - mn_now;
1197 1601
1198 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1602 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199 return; /* all is well */ 1603 return; /* all is well */
1200 1604
1201 ev_rt_now = ev_time (); 1605 ev_rt_now = ev_time ();
1202 mn_now = get_clock (); 1606 mn_now = get_clock ();
1203 now_floor = mn_now; 1607 now_floor = mn_now;
1204 } 1608 }
1205 1609
1206# if EV_PERIODICS 1610# if EV_PERIODIC_ENABLE
1611 periodics_reschedule (EV_A);
1612# endif
1613 /* no timer adjustment, as the monotonic clock doesn't jump */
1614 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1615 }
1616 else
1617#endif
1618 {
1619 ev_rt_now = ev_time ();
1620
1621 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1622 {
1623#if EV_PERIODIC_ENABLE
1207 periodics_reschedule (EV_A); 1624 periodics_reschedule (EV_A);
1208# endif 1625#endif
1209 /* no timer adjustment, as the monotonic clock doesn't jump */ 1626 /* adjust timers. this is easy, as the offset is the same for all of them */
1210 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1627 for (i = 1; i <= timercnt; ++i)
1628 ev_at (timers [i]) += ev_rt_now - mn_now;
1211 } 1629 }
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 1630
1229 mn_now = ev_rt_now; 1631 mn_now = ev_rt_now;
1230 } 1632 }
1231} 1633}
1232 1634
… …
1245static int loop_done; 1647static int loop_done;
1246 1648
1247void 1649void
1248ev_loop (EV_P_ int flags) 1650ev_loop (EV_P_ int flags)
1249{ 1651{
1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1652 loop_done = EVUNLOOP_CANCEL;
1251 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL;
1253 1653
1254 while (activecnt) 1654 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1655
1656 do
1255 { 1657 {
1658#ifndef _WIN32
1659 if (expect_false (curpid)) /* penalise the forking check even more */
1660 if (expect_false (getpid () != curpid))
1661 {
1662 curpid = getpid ();
1663 postfork = 1;
1664 }
1665#endif
1666
1667#if EV_FORK_ENABLE
1668 /* we might have forked, so queue fork handlers */
1669 if (expect_false (postfork))
1670 if (forkcnt)
1671 {
1672 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1673 call_pending (EV_A);
1674 }
1675#endif
1676
1256 /* queue check watchers (and execute them) */ 1677 /* queue prepare watchers (and execute them) */
1257 if (expect_false (preparecnt)) 1678 if (expect_false (preparecnt))
1258 { 1679 {
1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1680 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260 call_pending (EV_A); 1681 call_pending (EV_A);
1261 } 1682 }
1262 1683
1684 if (expect_false (!activecnt))
1685 break;
1686
1263 /* we might have forked, so reify kernel state if necessary */ 1687 /* we might have forked, so reify kernel state if necessary */
1264 if (expect_false (postfork)) 1688 if (expect_false (postfork))
1265 loop_fork (EV_A); 1689 loop_fork (EV_A);
1266 1690
1267 /* update fd-related kernel structures */ 1691 /* update fd-related kernel structures */
1268 fd_reify (EV_A); 1692 fd_reify (EV_A);
1269 1693
1270 /* calculate blocking time */ 1694 /* calculate blocking time */
1271 { 1695 {
1272 double block; 1696 ev_tstamp waittime = 0.;
1697 ev_tstamp sleeptime = 0.;
1273 1698
1274 if (flags & EVLOOP_NONBLOCK || idlecnt) 1699 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1275 block = 0.; /* do not block at all */
1276 else
1277 { 1700 {
1278 /* update time to cancel out callback processing overhead */ 1701 /* 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); 1702 time_update (EV_A_ 1e100);
1282 else
1283#endif
1284 {
1285 ev_rt_now = ev_time ();
1286 mn_now = ev_rt_now;
1287 }
1288 1703
1289 block = MAX_BLOCKTIME; 1704 waittime = MAX_BLOCKTIME;
1290 1705
1291 if (timercnt) 1706 if (timercnt)
1292 { 1707 {
1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1708 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1294 if (block > to) block = to; 1709 if (waittime > to) waittime = to;
1295 } 1710 }
1296 1711
1297#if EV_PERIODICS 1712#if EV_PERIODIC_ENABLE
1298 if (periodiccnt) 1713 if (periodiccnt)
1299 { 1714 {
1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1715 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1301 if (block > to) block = to; 1716 if (waittime > to) waittime = to;
1302 } 1717 }
1303#endif 1718#endif
1304 1719
1305 if (expect_false (block < 0.)) block = 0.; 1720 if (expect_false (waittime < timeout_blocktime))
1721 waittime = timeout_blocktime;
1722
1723 sleeptime = waittime - backend_fudge;
1724
1725 if (expect_true (sleeptime > io_blocktime))
1726 sleeptime = io_blocktime;
1727
1728 if (sleeptime)
1729 {
1730 ev_sleep (sleeptime);
1731 waittime -= sleeptime;
1732 }
1306 } 1733 }
1307 1734
1735 ++loop_count;
1308 backend_poll (EV_A_ block); 1736 backend_poll (EV_A_ waittime);
1737
1738 /* update ev_rt_now, do magic */
1739 time_update (EV_A_ waittime + sleeptime);
1309 } 1740 }
1310
1311 /* update ev_rt_now, do magic */
1312 time_update (EV_A);
1313 1741
1314 /* queue pending timers and reschedule them */ 1742 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1743 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1744#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1745 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1746#endif
1319 1747
1748#if EV_IDLE_ENABLE
1320 /* queue idle watchers unless io or timers are pending */ 1749 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1750 idle_reify (EV_A);
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1751#endif
1323 1752
1324 /* queue check watchers, to be executed first */ 1753 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1754 if (expect_false (checkcnt))
1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1755 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327 1756
1328 call_pending (EV_A); 1757 call_pending (EV_A);
1329
1330 if (expect_false (loop_done))
1331 break;
1332 } 1758 }
1759 while (expect_true (
1760 activecnt
1761 && !loop_done
1762 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1763 ));
1333 1764
1334 if (loop_done == EVUNLOOP_ONE) 1765 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = EVUNLOOP_CANCEL; 1766 loop_done = EVUNLOOP_CANCEL;
1336} 1767}
1337 1768
… …
1341 loop_done = how; 1772 loop_done = how;
1342} 1773}
1343 1774
1344/*****************************************************************************/ 1775/*****************************************************************************/
1345 1776
1346inline void 1777void inline_size
1347wlist_add (WL *head, WL elem) 1778wlist_add (WL *head, WL elem)
1348{ 1779{
1349 elem->next = *head; 1780 elem->next = *head;
1350 *head = elem; 1781 *head = elem;
1351} 1782}
1352 1783
1353inline void 1784void inline_size
1354wlist_del (WL *head, WL elem) 1785wlist_del (WL *head, WL elem)
1355{ 1786{
1356 while (*head) 1787 while (*head)
1357 { 1788 {
1358 if (*head == elem) 1789 if (*head == elem)
… …
1363 1794
1364 head = &(*head)->next; 1795 head = &(*head)->next;
1365 } 1796 }
1366} 1797}
1367 1798
1368inline void 1799void inline_speed
1369ev_clear_pending (EV_P_ W w) 1800clear_pending (EV_P_ W w)
1370{ 1801{
1371 if (w->pending) 1802 if (w->pending)
1372 { 1803 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1804 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1805 w->pending = 0;
1375 } 1806 }
1376} 1807}
1377 1808
1378inline void 1809int
1810ev_clear_pending (EV_P_ void *w)
1811{
1812 W w_ = (W)w;
1813 int pending = w_->pending;
1814
1815 if (expect_true (pending))
1816 {
1817 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1818 w_->pending = 0;
1819 p->w = 0;
1820 return p->events;
1821 }
1822 else
1823 return 0;
1824}
1825
1826void inline_size
1827pri_adjust (EV_P_ W w)
1828{
1829 int pri = w->priority;
1830 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1831 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1832 w->priority = pri;
1833}
1834
1835void inline_speed
1379ev_start (EV_P_ W w, int active) 1836ev_start (EV_P_ W w, int active)
1380{ 1837{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1838 pri_adjust (EV_A_ w);
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384 w->active = active; 1839 w->active = active;
1385 ev_ref (EV_A); 1840 ev_ref (EV_A);
1386} 1841}
1387 1842
1388inline void 1843void inline_size
1389ev_stop (EV_P_ W w) 1844ev_stop (EV_P_ W w)
1390{ 1845{
1391 ev_unref (EV_A); 1846 ev_unref (EV_A);
1392 w->active = 0; 1847 w->active = 0;
1393} 1848}
1394 1849
1395/*****************************************************************************/ 1850/*****************************************************************************/
1396 1851
1397void 1852void noinline
1398ev_io_start (EV_P_ ev_io *w) 1853ev_io_start (EV_P_ ev_io *w)
1399{ 1854{
1400 int fd = w->fd; 1855 int fd = w->fd;
1401 1856
1402 if (expect_false (ev_is_active (w))) 1857 if (expect_false (ev_is_active (w)))
… …
1404 1859
1405 assert (("ev_io_start called with negative fd", fd >= 0)); 1860 assert (("ev_io_start called with negative fd", fd >= 0));
1406 1861
1407 ev_start (EV_A_ (W)w, 1); 1862 ev_start (EV_A_ (W)w, 1);
1408 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1863 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1864 wlist_add (&anfds[fd].head, (WL)w);
1410 1865
1411 fd_change (EV_A_ fd); 1866 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1867 w->events &= ~EV_IOFDSET;
1412} 1868}
1413 1869
1414void 1870void noinline
1415ev_io_stop (EV_P_ ev_io *w) 1871ev_io_stop (EV_P_ ev_io *w)
1416{ 1872{
1417 ev_clear_pending (EV_A_ (W)w); 1873 clear_pending (EV_A_ (W)w);
1418 if (expect_false (!ev_is_active (w))) 1874 if (expect_false (!ev_is_active (w)))
1419 return; 1875 return;
1420 1876
1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1877 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422 1878
1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1879 wlist_del (&anfds[w->fd].head, (WL)w);
1424 ev_stop (EV_A_ (W)w); 1880 ev_stop (EV_A_ (W)w);
1425 1881
1426 fd_change (EV_A_ w->fd); 1882 fd_change (EV_A_ w->fd, 1);
1427} 1883}
1428 1884
1429void 1885void noinline
1430ev_timer_start (EV_P_ ev_timer *w) 1886ev_timer_start (EV_P_ ev_timer *w)
1431{ 1887{
1432 if (expect_false (ev_is_active (w))) 1888 if (expect_false (ev_is_active (w)))
1433 return; 1889 return;
1434 1890
1435 ((WT)w)->at += mn_now; 1891 ev_at (w) += mn_now;
1436 1892
1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1893 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438 1894
1439 ev_start (EV_A_ (W)w, ++timercnt); 1895 ev_start (EV_A_ (W)w, ++timercnt);
1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1896 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1441 timers [timercnt - 1] = w; 1897 timers [timercnt] = (WT)w;
1442 upheap ((WT *)timers, timercnt - 1); 1898 upheap (timers, timercnt);
1443 1899
1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1900 /*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1445} 1901}
1446 1902
1447void 1903void noinline
1448ev_timer_stop (EV_P_ ev_timer *w) 1904ev_timer_stop (EV_P_ ev_timer *w)
1449{ 1905{
1450 ev_clear_pending (EV_A_ (W)w); 1906 clear_pending (EV_A_ (W)w);
1451 if (expect_false (!ev_is_active (w))) 1907 if (expect_false (!ev_is_active (w)))
1452 return; 1908 return;
1453 1909
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1910 assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1455 1911
1912 {
1913 int active = ((W)w)->active;
1914
1456 if (expect_true (((W)w)->active < timercnt--)) 1915 if (expect_true (active < timercnt))
1457 { 1916 {
1458 timers [((W)w)->active - 1] = timers [timercnt]; 1917 timers [active] = timers [timercnt];
1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1918 adjustheap (timers, timercnt, active);
1460 } 1919 }
1461 1920
1462 ((WT)w)->at -= mn_now; 1921 --timercnt;
1922 }
1923
1924 ev_at (w) -= mn_now;
1463 1925
1464 ev_stop (EV_A_ (W)w); 1926 ev_stop (EV_A_ (W)w);
1465} 1927}
1466 1928
1467void 1929void noinline
1468ev_timer_again (EV_P_ ev_timer *w) 1930ev_timer_again (EV_P_ ev_timer *w)
1469{ 1931{
1470 if (ev_is_active (w)) 1932 if (ev_is_active (w))
1471 { 1933 {
1472 if (w->repeat) 1934 if (w->repeat)
1473 { 1935 {
1474 ((WT)w)->at = mn_now + w->repeat; 1936 ev_at (w) = mn_now + w->repeat;
1475 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1937 adjustheap (timers, timercnt, ((W)w)->active);
1476 } 1938 }
1477 else 1939 else
1478 ev_timer_stop (EV_A_ w); 1940 ev_timer_stop (EV_A_ w);
1479 } 1941 }
1480 else if (w->repeat) 1942 else if (w->repeat)
1481 { 1943 {
1482 w->at = w->repeat; 1944 ev_at (w) = w->repeat;
1483 ev_timer_start (EV_A_ w); 1945 ev_timer_start (EV_A_ w);
1484 } 1946 }
1485} 1947}
1486 1948
1487#if EV_PERIODICS 1949#if EV_PERIODIC_ENABLE
1488void 1950void noinline
1489ev_periodic_start (EV_P_ ev_periodic *w) 1951ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1952{
1491 if (expect_false (ev_is_active (w))) 1953 if (expect_false (ev_is_active (w)))
1492 return; 1954 return;
1493 1955
1494 if (w->reschedule_cb) 1956 if (w->reschedule_cb)
1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1957 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1496 else if (w->interval) 1958 else if (w->interval)
1497 { 1959 {
1498 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1960 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 */ 1961 /* 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; 1962 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501 } 1963 }
1964 else
1965 ev_at (w) = w->offset;
1502 1966
1503 ev_start (EV_A_ (W)w, ++periodiccnt); 1967 ev_start (EV_A_ (W)w, ++periodiccnt);
1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1968 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1505 periodics [periodiccnt - 1] = w; 1969 periodics [periodiccnt] = (WT)w;
1506 upheap ((WT *)periodics, periodiccnt - 1); 1970 upheap (periodics, periodiccnt);
1507 1971
1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1972 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509} 1973}
1510 1974
1511void 1975void noinline
1512ev_periodic_stop (EV_P_ ev_periodic *w) 1976ev_periodic_stop (EV_P_ ev_periodic *w)
1513{ 1977{
1514 ev_clear_pending (EV_A_ (W)w); 1978 clear_pending (EV_A_ (W)w);
1515 if (expect_false (!ev_is_active (w))) 1979 if (expect_false (!ev_is_active (w)))
1516 return; 1980 return;
1517 1981
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1982 assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1519 1983
1984 {
1985 int active = ((W)w)->active;
1986
1520 if (expect_true (((W)w)->active < periodiccnt--)) 1987 if (expect_true (active < periodiccnt))
1521 { 1988 {
1522 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1989 periodics [active] = periodics [periodiccnt];
1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1990 adjustheap (periodics, periodiccnt, active);
1524 } 1991 }
1992
1993 --periodiccnt;
1994 }
1525 1995
1526 ev_stop (EV_A_ (W)w); 1996 ev_stop (EV_A_ (W)w);
1527} 1997}
1528 1998
1529void 1999void noinline
1530ev_periodic_again (EV_P_ ev_periodic *w) 2000ev_periodic_again (EV_P_ ev_periodic *w)
1531{ 2001{
1532 /* TODO: use adjustheap and recalculation */ 2002 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 2003 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 2004 ev_periodic_start (EV_A_ w);
1535} 2005}
1536#endif 2006#endif
1537 2007
2008#ifndef SA_RESTART
2009# define SA_RESTART 0
2010#endif
2011
2012void noinline
2013ev_signal_start (EV_P_ ev_signal *w)
2014{
2015#if EV_MULTIPLICITY
2016 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2017#endif
2018 if (expect_false (ev_is_active (w)))
2019 return;
2020
2021 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2022
2023 evpipe_init (EV_A);
2024
2025 {
2026#ifndef _WIN32
2027 sigset_t full, prev;
2028 sigfillset (&full);
2029 sigprocmask (SIG_SETMASK, &full, &prev);
2030#endif
2031
2032 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2033
2034#ifndef _WIN32
2035 sigprocmask (SIG_SETMASK, &prev, 0);
2036#endif
2037 }
2038
2039 ev_start (EV_A_ (W)w, 1);
2040 wlist_add (&signals [w->signum - 1].head, (WL)w);
2041
2042 if (!((WL)w)->next)
2043 {
2044#if _WIN32
2045 signal (w->signum, ev_sighandler);
2046#else
2047 struct sigaction sa;
2048 sa.sa_handler = ev_sighandler;
2049 sigfillset (&sa.sa_mask);
2050 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2051 sigaction (w->signum, &sa, 0);
2052#endif
2053 }
2054}
2055
2056void noinline
2057ev_signal_stop (EV_P_ ev_signal *w)
2058{
2059 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w)))
2061 return;
2062
2063 wlist_del (&signals [w->signum - 1].head, (WL)w);
2064 ev_stop (EV_A_ (W)w);
2065
2066 if (!signals [w->signum - 1].head)
2067 signal (w->signum, SIG_DFL);
2068}
2069
2070void
2071ev_child_start (EV_P_ ev_child *w)
2072{
2073#if EV_MULTIPLICITY
2074 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2075#endif
2076 if (expect_false (ev_is_active (w)))
2077 return;
2078
2079 ev_start (EV_A_ (W)w, 1);
2080 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2081}
2082
2083void
2084ev_child_stop (EV_P_ ev_child *w)
2085{
2086 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w)))
2088 return;
2089
2090 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2091 ev_stop (EV_A_ (W)w);
2092}
2093
2094#if EV_STAT_ENABLE
2095
2096# ifdef _WIN32
2097# undef lstat
2098# define lstat(a,b) _stati64 (a,b)
2099# endif
2100
2101#define DEF_STAT_INTERVAL 5.0074891
2102#define MIN_STAT_INTERVAL 0.1074891
2103
2104static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2105
2106#if EV_USE_INOTIFY
2107# define EV_INOTIFY_BUFSIZE 8192
2108
2109static void noinline
2110infy_add (EV_P_ ev_stat *w)
2111{
2112 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);
2113
2114 if (w->wd < 0)
2115 {
2116 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2117
2118 /* monitor some parent directory for speedup hints */
2119 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2120 {
2121 char path [4096];
2122 strcpy (path, w->path);
2123
2124 do
2125 {
2126 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2127 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2128
2129 char *pend = strrchr (path, '/');
2130
2131 if (!pend)
2132 break; /* whoops, no '/', complain to your admin */
2133
2134 *pend = 0;
2135 w->wd = inotify_add_watch (fs_fd, path, mask);
2136 }
2137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2138 }
2139 }
2140 else
2141 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2142
2143 if (w->wd >= 0)
2144 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2145}
2146
2147static void noinline
2148infy_del (EV_P_ ev_stat *w)
2149{
2150 int slot;
2151 int wd = w->wd;
2152
2153 if (wd < 0)
2154 return;
2155
2156 w->wd = -2;
2157 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2158 wlist_del (&fs_hash [slot].head, (WL)w);
2159
2160 /* remove this watcher, if others are watching it, they will rearm */
2161 inotify_rm_watch (fs_fd, wd);
2162}
2163
2164static void noinline
2165infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2166{
2167 if (slot < 0)
2168 /* overflow, need to check for all hahs slots */
2169 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2170 infy_wd (EV_A_ slot, wd, ev);
2171 else
2172 {
2173 WL w_;
2174
2175 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2176 {
2177 ev_stat *w = (ev_stat *)w_;
2178 w_ = w_->next; /* lets us remove this watcher and all before it */
2179
2180 if (w->wd == wd || wd == -1)
2181 {
2182 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2183 {
2184 w->wd = -1;
2185 infy_add (EV_A_ w); /* re-add, no matter what */
2186 }
2187
2188 stat_timer_cb (EV_A_ &w->timer, 0);
2189 }
2190 }
2191 }
2192}
2193
2194static void
2195infy_cb (EV_P_ ev_io *w, int revents)
2196{
2197 char buf [EV_INOTIFY_BUFSIZE];
2198 struct inotify_event *ev = (struct inotify_event *)buf;
2199 int ofs;
2200 int len = read (fs_fd, buf, sizeof (buf));
2201
2202 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2203 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2204}
2205
2206void inline_size
2207infy_init (EV_P)
2208{
2209 if (fs_fd != -2)
2210 return;
2211
2212 fs_fd = inotify_init ();
2213
2214 if (fs_fd >= 0)
2215 {
2216 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2217 ev_set_priority (&fs_w, EV_MAXPRI);
2218 ev_io_start (EV_A_ &fs_w);
2219 }
2220}
2221
2222void inline_size
2223infy_fork (EV_P)
2224{
2225 int slot;
2226
2227 if (fs_fd < 0)
2228 return;
2229
2230 close (fs_fd);
2231 fs_fd = inotify_init ();
2232
2233 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2234 {
2235 WL w_ = fs_hash [slot].head;
2236 fs_hash [slot].head = 0;
2237
2238 while (w_)
2239 {
2240 ev_stat *w = (ev_stat *)w_;
2241 w_ = w_->next; /* lets us add this watcher */
2242
2243 w->wd = -1;
2244
2245 if (fs_fd >= 0)
2246 infy_add (EV_A_ w); /* re-add, no matter what */
2247 else
2248 ev_timer_start (EV_A_ &w->timer);
2249 }
2250
2251 }
2252}
2253
2254#endif
2255
2256void
2257ev_stat_stat (EV_P_ ev_stat *w)
2258{
2259 if (lstat (w->path, &w->attr) < 0)
2260 w->attr.st_nlink = 0;
2261 else if (!w->attr.st_nlink)
2262 w->attr.st_nlink = 1;
2263}
2264
2265static void noinline
2266stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2267{
2268 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2269
2270 /* we copy this here each the time so that */
2271 /* prev has the old value when the callback gets invoked */
2272 w->prev = w->attr;
2273 ev_stat_stat (EV_A_ w);
2274
2275 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2276 if (
2277 w->prev.st_dev != w->attr.st_dev
2278 || w->prev.st_ino != w->attr.st_ino
2279 || w->prev.st_mode != w->attr.st_mode
2280 || w->prev.st_nlink != w->attr.st_nlink
2281 || w->prev.st_uid != w->attr.st_uid
2282 || w->prev.st_gid != w->attr.st_gid
2283 || w->prev.st_rdev != w->attr.st_rdev
2284 || w->prev.st_size != w->attr.st_size
2285 || w->prev.st_atime != w->attr.st_atime
2286 || w->prev.st_mtime != w->attr.st_mtime
2287 || w->prev.st_ctime != w->attr.st_ctime
2288 ) {
2289 #if EV_USE_INOTIFY
2290 infy_del (EV_A_ w);
2291 infy_add (EV_A_ w);
2292 ev_stat_stat (EV_A_ w); /* avoid race... */
2293 #endif
2294
2295 ev_feed_event (EV_A_ w, EV_STAT);
2296 }
2297}
2298
2299void
2300ev_stat_start (EV_P_ ev_stat *w)
2301{
2302 if (expect_false (ev_is_active (w)))
2303 return;
2304
2305 /* since we use memcmp, we need to clear any padding data etc. */
2306 memset (&w->prev, 0, sizeof (ev_statdata));
2307 memset (&w->attr, 0, sizeof (ev_statdata));
2308
2309 ev_stat_stat (EV_A_ w);
2310
2311 if (w->interval < MIN_STAT_INTERVAL)
2312 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2313
2314 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2315 ev_set_priority (&w->timer, ev_priority (w));
2316
2317#if EV_USE_INOTIFY
2318 infy_init (EV_A);
2319
2320 if (fs_fd >= 0)
2321 infy_add (EV_A_ w);
2322 else
2323#endif
2324 ev_timer_start (EV_A_ &w->timer);
2325
2326 ev_start (EV_A_ (W)w, 1);
2327}
2328
2329void
2330ev_stat_stop (EV_P_ ev_stat *w)
2331{
2332 clear_pending (EV_A_ (W)w);
2333 if (expect_false (!ev_is_active (w)))
2334 return;
2335
2336#if EV_USE_INOTIFY
2337 infy_del (EV_A_ w);
2338#endif
2339 ev_timer_stop (EV_A_ &w->timer);
2340
2341 ev_stop (EV_A_ (W)w);
2342}
2343#endif
2344
2345#if EV_IDLE_ENABLE
1538void 2346void
1539ev_idle_start (EV_P_ ev_idle *w) 2347ev_idle_start (EV_P_ ev_idle *w)
1540{ 2348{
1541 if (expect_false (ev_is_active (w))) 2349 if (expect_false (ev_is_active (w)))
1542 return; 2350 return;
1543 2351
2352 pri_adjust (EV_A_ (W)w);
2353
2354 {
2355 int active = ++idlecnt [ABSPRI (w)];
2356
2357 ++idleall;
1544 ev_start (EV_A_ (W)w, ++idlecnt); 2358 ev_start (EV_A_ (W)w, active);
2359
1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2360 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1546 idles [idlecnt - 1] = w; 2361 idles [ABSPRI (w)][active - 1] = w;
2362 }
1547} 2363}
1548 2364
1549void 2365void
1550ev_idle_stop (EV_P_ ev_idle *w) 2366ev_idle_stop (EV_P_ ev_idle *w)
1551{ 2367{
1552 ev_clear_pending (EV_A_ (W)w); 2368 clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w))) 2369 if (expect_false (!ev_is_active (w)))
1554 return; 2370 return;
1555 2371
1556 idles [((W)w)->active - 1] = idles [--idlecnt]; 2372 {
2373 int active = ((W)w)->active;
2374
2375 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2376 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2377
1557 ev_stop (EV_A_ (W)w); 2378 ev_stop (EV_A_ (W)w);
2379 --idleall;
2380 }
1558} 2381}
2382#endif
1559 2383
1560void 2384void
1561ev_prepare_start (EV_P_ ev_prepare *w) 2385ev_prepare_start (EV_P_ ev_prepare *w)
1562{ 2386{
1563 if (expect_false (ev_is_active (w))) 2387 if (expect_false (ev_is_active (w)))
… …
1569} 2393}
1570 2394
1571void 2395void
1572ev_prepare_stop (EV_P_ ev_prepare *w) 2396ev_prepare_stop (EV_P_ ev_prepare *w)
1573{ 2397{
1574 ev_clear_pending (EV_A_ (W)w); 2398 clear_pending (EV_A_ (W)w);
1575 if (expect_false (!ev_is_active (w))) 2399 if (expect_false (!ev_is_active (w)))
1576 return; 2400 return;
1577 2401
2402 {
2403 int active = ((W)w)->active;
1578 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 2404 prepares [active - 1] = prepares [--preparecnt];
2405 ((W)prepares [active - 1])->active = active;
2406 }
2407
1579 ev_stop (EV_A_ (W)w); 2408 ev_stop (EV_A_ (W)w);
1580} 2409}
1581 2410
1582void 2411void
1583ev_check_start (EV_P_ ev_check *w) 2412ev_check_start (EV_P_ ev_check *w)
… …
1591} 2420}
1592 2421
1593void 2422void
1594ev_check_stop (EV_P_ ev_check *w) 2423ev_check_stop (EV_P_ ev_check *w)
1595{ 2424{
1596 ev_clear_pending (EV_A_ (W)w); 2425 clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w))) 2426 if (expect_false (!ev_is_active (w)))
1598 return; 2427 return;
1599 2428
2429 {
2430 int active = ((W)w)->active;
1600 checks [((W)w)->active - 1] = checks [--checkcnt]; 2431 checks [active - 1] = checks [--checkcnt];
2432 ((W)checks [active - 1])->active = active;
2433 }
2434
1601 ev_stop (EV_A_ (W)w); 2435 ev_stop (EV_A_ (W)w);
1602} 2436}
1603 2437
1604#ifndef SA_RESTART 2438#if EV_EMBED_ENABLE
1605# define SA_RESTART 0 2439void 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) 2440ev_embed_sweep (EV_P_ ev_embed *w)
1678{ 2441{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK); 2442 ev_loop (w->other, EVLOOP_NONBLOCK);
1680} 2443}
1681 2444
1682static void 2445static void
1683embed_cb (EV_P_ ev_io *io, int revents) 2446embed_io_cb (EV_P_ ev_io *io, int revents)
1684{ 2447{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2448 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686 2449
1687 if (ev_cb (w)) 2450 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2451 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else 2452 else
1690 ev_embed_loop (loop, w); 2453 ev_loop (w->other, EVLOOP_NONBLOCK);
1691} 2454}
2455
2456static void
2457embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2458{
2459 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2460
2461 {
2462 struct ev_loop *loop = w->other;
2463
2464 while (fdchangecnt)
2465 {
2466 fd_reify (EV_A);
2467 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2468 }
2469 }
2470}
2471
2472#if 0
2473static void
2474embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2475{
2476 ev_idle_stop (EV_A_ idle);
2477}
2478#endif
1692 2479
1693void 2480void
1694ev_embed_start (EV_P_ ev_embed *w) 2481ev_embed_start (EV_P_ ev_embed *w)
1695{ 2482{
1696 if (expect_false (ev_is_active (w))) 2483 if (expect_false (ev_is_active (w)))
1697 return; 2484 return;
1698 2485
1699 { 2486 {
1700 struct ev_loop *loop = w->loop; 2487 struct ev_loop *loop = w->other;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2488 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2489 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1703 } 2490 }
1704 2491
1705 ev_set_priority (&w->io, ev_priority (w)); 2492 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io); 2493 ev_io_start (EV_A_ &w->io);
2494
2495 ev_prepare_init (&w->prepare, embed_prepare_cb);
2496 ev_set_priority (&w->prepare, EV_MINPRI);
2497 ev_prepare_start (EV_A_ &w->prepare);
2498
2499 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2500
1707 ev_start (EV_A_ (W)w, 1); 2501 ev_start (EV_A_ (W)w, 1);
1708} 2502}
1709 2503
1710void 2504void
1711ev_embed_stop (EV_P_ ev_embed *w) 2505ev_embed_stop (EV_P_ ev_embed *w)
1712{ 2506{
1713 ev_clear_pending (EV_A_ (W)w); 2507 clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 2508 if (expect_false (!ev_is_active (w)))
1715 return; 2509 return;
1716 2510
1717 ev_io_stop (EV_A_ &w->io); 2511 ev_io_stop (EV_A_ &w->io);
2512 ev_prepare_stop (EV_A_ &w->prepare);
2513
1718 ev_stop (EV_A_ (W)w); 2514 ev_stop (EV_A_ (W)w);
2515}
2516#endif
2517
2518#if EV_FORK_ENABLE
2519void
2520ev_fork_start (EV_P_ ev_fork *w)
2521{
2522 if (expect_false (ev_is_active (w)))
2523 return;
2524
2525 ev_start (EV_A_ (W)w, ++forkcnt);
2526 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2527 forks [forkcnt - 1] = w;
2528}
2529
2530void
2531ev_fork_stop (EV_P_ ev_fork *w)
2532{
2533 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w)))
2535 return;
2536
2537 {
2538 int active = ((W)w)->active;
2539 forks [active - 1] = forks [--forkcnt];
2540 ((W)forks [active - 1])->active = active;
2541 }
2542
2543 ev_stop (EV_A_ (W)w);
2544}
2545#endif
2546
2547#if EV_ASYNC_ENABLE
2548void
2549ev_async_start (EV_P_ ev_async *w)
2550{
2551 if (expect_false (ev_is_active (w)))
2552 return;
2553
2554 evpipe_init (EV_A);
2555
2556 ev_start (EV_A_ (W)w, ++asynccnt);
2557 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2558 asyncs [asynccnt - 1] = w;
2559}
2560
2561void
2562ev_async_stop (EV_P_ ev_async *w)
2563{
2564 clear_pending (EV_A_ (W)w);
2565 if (expect_false (!ev_is_active (w)))
2566 return;
2567
2568 {
2569 int active = ((W)w)->active;
2570 asyncs [active - 1] = asyncs [--asynccnt];
2571 ((W)asyncs [active - 1])->active = active;
2572 }
2573
2574 ev_stop (EV_A_ (W)w);
2575}
2576
2577void
2578ev_async_send (EV_P_ ev_async *w)
2579{
2580 w->sent = 1;
2581 evpipe_write (EV_A_ &gotasync);
1719} 2582}
1720#endif 2583#endif
1721 2584
1722/*****************************************************************************/ 2585/*****************************************************************************/
1723 2586
… …
1781 ev_timer_set (&once->to, timeout, 0.); 2644 ev_timer_set (&once->to, timeout, 0.);
1782 ev_timer_start (EV_A_ &once->to); 2645 ev_timer_start (EV_A_ &once->to);
1783 } 2646 }
1784} 2647}
1785 2648
2649#if EV_MULTIPLICITY
2650 #include "ev_wrap.h"
2651#endif
2652
1786#ifdef __cplusplus 2653#ifdef __cplusplus
1787} 2654}
1788#endif 2655#endif
1789 2656

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