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Comparing libev/ev.c (file contents):
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC vs.
Revision 1.221 by root, Sun Apr 6 12:44:49 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>
274int eventfd (unsigned int initval, int flags);
275#endif
276
177/**/ 277/**/
278
279/*
280 * This is used to avoid floating point rounding problems.
281 * It is added to ev_rt_now when scheduling periodics
282 * to ensure progress, time-wise, even when rounding
283 * errors are against us.
284 * This value is good at least till the year 4000.
285 * Better solutions welcome.
286 */
287#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 288
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 289#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) */ 290#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 */ 291/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 292
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 293#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 294# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline static inline 295# define noinline __attribute__ ((noinline))
193#else 296#else
194# define expect(expr,value) (expr) 297# define expect(expr,value) (expr)
195# define inline static 298# define noinline
299# if __STDC_VERSION__ < 199901L
300# define inline
301# endif
196#endif 302#endif
197 303
198#define expect_false(expr) expect ((expr) != 0, 0) 304#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 305#define expect_true(expr) expect ((expr) != 0, 1)
306#define inline_size static inline
307
308#if EV_MINIMAL
309# define inline_speed static noinline
310#else
311# define inline_speed static inline
312#endif
200 313
201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 314#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 315#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203 316
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 317#define EMPTY /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 318#define EMPTY2(a,b) /* used to suppress some warnings */
206 319
207typedef struct ev_watcher *W; 320typedef ev_watcher *W;
208typedef struct ev_watcher_list *WL; 321typedef ev_watcher_list *WL;
209typedef struct ev_watcher_time *WT; 322typedef ev_watcher_time *WT;
210 323
324#if EV_USE_MONOTONIC
325/* sig_atomic_t is used to avoid per-thread variables or locking but still */
326/* giving it a reasonably high chance of working on typical architetcures */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 327static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
328#endif
212 329
213#ifdef _WIN32 330#ifdef _WIN32
214# include "ev_win32.c" 331# include "ev_win32.c"
215#endif 332#endif
216 333
217/*****************************************************************************/ 334/*****************************************************************************/
218 335
219static void (*syserr_cb)(const char *msg); 336static void (*syserr_cb)(const char *msg);
220 337
338void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 339ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 340{
223 syserr_cb = cb; 341 syserr_cb = cb;
224} 342}
225 343
226static void 344static void noinline
227syserr (const char *msg) 345syserr (const char *msg)
228{ 346{
229 if (!msg) 347 if (!msg)
230 msg = "(libev) system error"; 348 msg = "(libev) system error";
231 349
… …
238 } 356 }
239} 357}
240 358
241static void *(*alloc)(void *ptr, long size); 359static void *(*alloc)(void *ptr, long size);
242 360
361void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 362ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 363{
245 alloc = cb; 364 alloc = cb;
246} 365}
247 366
248static void * 367inline_speed void *
249ev_realloc (void *ptr, long size) 368ev_realloc (void *ptr, long size)
250{ 369{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 370 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252 371
253 if (!ptr && size) 372 if (!ptr && size)
… …
277typedef struct 396typedef struct
278{ 397{
279 W w; 398 W w;
280 int events; 399 int events;
281} ANPENDING; 400} ANPENDING;
401
402#if EV_USE_INOTIFY
403typedef struct
404{
405 WL head;
406} ANFS;
407#endif
282 408
283#if EV_MULTIPLICITY 409#if EV_MULTIPLICITY
284 410
285 struct ev_loop 411 struct ev_loop
286 { 412 {
… …
320 gettimeofday (&tv, 0); 446 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 447 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 448#endif
323} 449}
324 450
325inline ev_tstamp 451ev_tstamp inline_size
326get_clock (void) 452get_clock (void)
327{ 453{
328#if EV_USE_MONOTONIC 454#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 455 if (expect_true (have_monotonic))
330 { 456 {
… …
343{ 469{
344 return ev_rt_now; 470 return ev_rt_now;
345} 471}
346#endif 472#endif
347 473
348#define array_roundsize(type,n) (((n) | 4) & ~3) 474void
475ev_sleep (ev_tstamp delay)
476{
477 if (delay > 0.)
478 {
479#if EV_USE_NANOSLEEP
480 struct timespec ts;
481
482 ts.tv_sec = (time_t)delay;
483 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
484
485 nanosleep (&ts, 0);
486#elif defined(_WIN32)
487 Sleep ((unsigned long)(delay * 1e3));
488#else
489 struct timeval tv;
490
491 tv.tv_sec = (time_t)delay;
492 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
493
494 select (0, 0, 0, 0, &tv);
495#endif
496 }
497}
498
499/*****************************************************************************/
500
501int inline_size
502array_nextsize (int elem, int cur, int cnt)
503{
504 int ncur = cur + 1;
505
506 do
507 ncur <<= 1;
508 while (cnt > ncur);
509
510 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
511 if (elem * ncur > 4096)
512 {
513 ncur *= elem;
514 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
515 ncur = ncur - sizeof (void *) * 4;
516 ncur /= elem;
517 }
518
519 return ncur;
520}
521
522static noinline void *
523array_realloc (int elem, void *base, int *cur, int cnt)
524{
525 *cur = array_nextsize (elem, *cur, cnt);
526 return ev_realloc (base, elem * *cur);
527}
349 528
350#define array_needsize(type,base,cur,cnt,init) \ 529#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 530 if (expect_false ((cnt) > (cur))) \
352 { \ 531 { \
353 int newcnt = cur; \ 532 int ocur_ = (cur); \
354 do \ 533 (base) = (type *)array_realloc \
355 { \ 534 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 535 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 } 536 }
364 537
538#if 0
365#define array_slim(type,stem) \ 539#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 540 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 541 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 542 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 543 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 544 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 545 }
546#endif
372 547
373#define array_free(stem, idx) \ 548#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 549 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 550
376/*****************************************************************************/ 551/*****************************************************************************/
377 552
378static void 553void noinline
554ev_feed_event (EV_P_ void *w, int revents)
555{
556 W w_ = (W)w;
557 int pri = ABSPRI (w_);
558
559 if (expect_false (w_->pending))
560 pendings [pri][w_->pending - 1].events |= revents;
561 else
562 {
563 w_->pending = ++pendingcnt [pri];
564 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
565 pendings [pri][w_->pending - 1].w = w_;
566 pendings [pri][w_->pending - 1].events = revents;
567 }
568}
569
570void inline_speed
571queue_events (EV_P_ W *events, int eventcnt, int type)
572{
573 int i;
574
575 for (i = 0; i < eventcnt; ++i)
576 ev_feed_event (EV_A_ events [i], type);
577}
578
579/*****************************************************************************/
580
581void inline_size
379anfds_init (ANFD *base, int count) 582anfds_init (ANFD *base, int count)
380{ 583{
381 while (count--) 584 while (count--)
382 { 585 {
383 base->head = 0; 586 base->head = 0;
… …
386 589
387 ++base; 590 ++base;
388 } 591 }
389} 592}
390 593
391void 594void 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 if (expect_false (!w_->cb))
403 return;
404
405 w_->pending = ++pendingcnt [ABSPRI (w_)];
406 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409}
410
411static void
412queue_events (EV_P_ W *events, int eventcnt, int type)
413{
414 int i;
415
416 for (i = 0; i < eventcnt; ++i)
417 ev_feed_event (EV_A_ events [i], type);
418}
419
420inline void
421fd_event (EV_P_ int fd, int revents) 595fd_event (EV_P_ int fd, int revents)
422{ 596{
423 ANFD *anfd = anfds + fd; 597 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 598 ev_io *w;
425 599
426 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 600 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427 { 601 {
428 int ev = w->events & revents; 602 int ev = w->events & revents;
429 603
430 if (ev) 604 if (ev)
431 ev_feed_event (EV_A_ (W)w, ev); 605 ev_feed_event (EV_A_ (W)w, ev);
… …
433} 607}
434 608
435void 609void
436ev_feed_fd_event (EV_P_ int fd, int revents) 610ev_feed_fd_event (EV_P_ int fd, int revents)
437{ 611{
612 if (fd >= 0 && fd < anfdmax)
438 fd_event (EV_A_ fd, revents); 613 fd_event (EV_A_ fd, revents);
439} 614}
440 615
441/*****************************************************************************/ 616void inline_size
442
443inline void
444fd_reify (EV_P) 617fd_reify (EV_P)
445{ 618{
446 int i; 619 int i;
447 620
448 for (i = 0; i < fdchangecnt; ++i) 621 for (i = 0; i < fdchangecnt; ++i)
449 { 622 {
450 int fd = fdchanges [i]; 623 int fd = fdchanges [i];
451 ANFD *anfd = anfds + fd; 624 ANFD *anfd = anfds + fd;
452 struct ev_io *w; 625 ev_io *w;
453 626
454 int events = 0; 627 unsigned char events = 0;
455 628
456 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 629 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457 events |= w->events; 630 events |= (unsigned char)w->events;
458 631
459#if EV_SELECT_IS_WINSOCKET 632#if EV_SELECT_IS_WINSOCKET
460 if (events) 633 if (events)
461 { 634 {
462 unsigned long argp; 635 unsigned long argp;
636 #ifdef EV_FD_TO_WIN32_HANDLE
637 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
638 #else
463 anfd->handle = _get_osfhandle (fd); 639 anfd->handle = _get_osfhandle (fd);
640 #endif
464 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 641 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
465 } 642 }
466#endif 643#endif
467 644
645 {
646 unsigned char o_events = anfd->events;
647 unsigned char o_reify = anfd->reify;
648
468 anfd->reify = 0; 649 anfd->reify = 0;
469
470 backend_modify (EV_A_ fd, anfd->events, events);
471 anfd->events = events; 650 anfd->events = events;
651
652 if (o_events != events || o_reify & EV_IOFDSET)
653 backend_modify (EV_A_ fd, o_events, events);
654 }
472 } 655 }
473 656
474 fdchangecnt = 0; 657 fdchangecnt = 0;
475} 658}
476 659
477static void 660void inline_size
478fd_change (EV_P_ int fd) 661fd_change (EV_P_ int fd, int flags)
479{ 662{
480 if (expect_false (anfds [fd].reify)) 663 unsigned char reify = anfds [fd].reify;
481 return;
482
483 anfds [fd].reify = 1; 664 anfds [fd].reify |= flags;
484 665
666 if (expect_true (!reify))
667 {
485 ++fdchangecnt; 668 ++fdchangecnt;
486 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 669 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487 fdchanges [fdchangecnt - 1] = fd; 670 fdchanges [fdchangecnt - 1] = fd;
671 }
488} 672}
489 673
490static void 674void inline_speed
491fd_kill (EV_P_ int fd) 675fd_kill (EV_P_ int fd)
492{ 676{
493 struct ev_io *w; 677 ev_io *w;
494 678
495 while ((w = (struct ev_io *)anfds [fd].head)) 679 while ((w = (ev_io *)anfds [fd].head))
496 { 680 {
497 ev_io_stop (EV_A_ w); 681 ev_io_stop (EV_A_ w);
498 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 682 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
499 } 683 }
500} 684}
501 685
502inline int 686int inline_size
503fd_valid (int fd) 687fd_valid (int fd)
504{ 688{
505#ifdef _WIN32 689#ifdef _WIN32
506 return _get_osfhandle (fd) != -1; 690 return _get_osfhandle (fd) != -1;
507#else 691#else
508 return fcntl (fd, F_GETFD) != -1; 692 return fcntl (fd, F_GETFD) != -1;
509#endif 693#endif
510} 694}
511 695
512/* called on EBADF to verify fds */ 696/* called on EBADF to verify fds */
513static void 697static void noinline
514fd_ebadf (EV_P) 698fd_ebadf (EV_P)
515{ 699{
516 int fd; 700 int fd;
517 701
518 for (fd = 0; fd < anfdmax; ++fd) 702 for (fd = 0; fd < anfdmax; ++fd)
… …
520 if (!fd_valid (fd) == -1 && errno == EBADF) 704 if (!fd_valid (fd) == -1 && errno == EBADF)
521 fd_kill (EV_A_ fd); 705 fd_kill (EV_A_ fd);
522} 706}
523 707
524/* called on ENOMEM in select/poll to kill some fds and retry */ 708/* called on ENOMEM in select/poll to kill some fds and retry */
525static void 709static void noinline
526fd_enomem (EV_P) 710fd_enomem (EV_P)
527{ 711{
528 int fd; 712 int fd;
529 713
530 for (fd = anfdmax; fd--; ) 714 for (fd = anfdmax; fd--; )
… …
534 return; 718 return;
535 } 719 }
536} 720}
537 721
538/* usually called after fork if backend needs to re-arm all fds from scratch */ 722/* usually called after fork if backend needs to re-arm all fds from scratch */
539static void 723static void noinline
540fd_rearm_all (EV_P) 724fd_rearm_all (EV_P)
541{ 725{
542 int fd; 726 int fd;
543 727
544 /* this should be highly optimised to not do anything but set a flag */
545 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
546 if (anfds [fd].events) 729 if (anfds [fd].events)
547 { 730 {
548 anfds [fd].events = 0; 731 anfds [fd].events = 0;
549 fd_change (EV_A_ fd); 732 fd_change (EV_A_ fd, EV_IOFDSET | 1);
550 } 733 }
551} 734}
552 735
553/*****************************************************************************/ 736/*****************************************************************************/
554 737
555static void 738void inline_speed
556upheap (WT *heap, int k) 739upheap (WT *heap, int k)
557{ 740{
558 WT w = heap [k]; 741 WT w = heap [k];
559 742
560 while (k && heap [k >> 1]->at > w->at) 743 while (k)
561 { 744 {
745 int p = (k - 1) >> 1;
746
747 if (heap [p]->at <= w->at)
748 break;
749
562 heap [k] = heap [k >> 1]; 750 heap [k] = heap [p];
563 ((W)heap [k])->active = k + 1; 751 ((W)heap [k])->active = k + 1;
564 k >>= 1; 752 k = p;
565 } 753 }
566 754
567 heap [k] = w; 755 heap [k] = w;
568 ((W)heap [k])->active = k + 1; 756 ((W)heap [k])->active = k + 1;
569
570} 757}
571 758
572static void 759void inline_speed
573downheap (WT *heap, int N, int k) 760downheap (WT *heap, int N, int k)
574{ 761{
575 WT w = heap [k]; 762 WT w = heap [k];
576 763
577 while (k < (N >> 1)) 764 for (;;)
578 { 765 {
579 int j = k << 1; 766 int c = (k << 1) + 1;
580 767
581 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 768 if (c >= N)
582 ++j;
583
584 if (w->at <= heap [j]->at)
585 break; 769 break;
586 770
771 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
772 ? 1 : 0;
773
774 if (w->at <= heap [c]->at)
775 break;
776
587 heap [k] = heap [j]; 777 heap [k] = heap [c];
588 ((W)heap [k])->active = k + 1; 778 ((W)heap [k])->active = k + 1;
779
589 k = j; 780 k = c;
590 } 781 }
591 782
592 heap [k] = w; 783 heap [k] = w;
593 ((W)heap [k])->active = k + 1; 784 ((W)heap [k])->active = k + 1;
594} 785}
595 786
596inline void 787void inline_size
597adjustheap (WT *heap, int N, int k) 788adjustheap (WT *heap, int N, int k)
598{ 789{
599 upheap (heap, k); 790 upheap (heap, k);
600 downheap (heap, N, k); 791 downheap (heap, N, k);
601} 792}
… …
603/*****************************************************************************/ 794/*****************************************************************************/
604 795
605typedef struct 796typedef struct
606{ 797{
607 WL head; 798 WL head;
608 sig_atomic_t volatile gotsig; 799 EV_ATOMIC_T gotsig;
609} ANSIG; 800} ANSIG;
610 801
611static ANSIG *signals; 802static ANSIG *signals;
612static int signalmax; 803static int signalmax;
613 804
614static int sigpipe [2]; 805static EV_ATOMIC_T gotsig;
615static sig_atomic_t volatile gotsig;
616static struct ev_io sigev;
617 806
618static void 807void inline_size
619signals_init (ANSIG *base, int count) 808signals_init (ANSIG *base, int count)
620{ 809{
621 while (count--) 810 while (count--)
622 { 811 {
623 base->head = 0; 812 base->head = 0;
… …
625 814
626 ++base; 815 ++base;
627 } 816 }
628} 817}
629 818
630static void 819/*****************************************************************************/
631sighandler (int signum)
632{
633#if _WIN32
634 signal (signum, sighandler);
635#endif
636 820
637 signals [signum - 1].gotsig = 1; 821void inline_speed
638
639 if (!gotsig)
640 {
641 int old_errno = errno;
642 gotsig = 1;
643 write (sigpipe [1], &signum, 1);
644 errno = old_errno;
645 }
646}
647
648void
649ev_feed_signal_event (EV_P_ int signum)
650{
651 WL w;
652
653#if EV_MULTIPLICITY
654 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
655#endif
656
657 --signum;
658
659 if (signum < 0 || signum >= signalmax)
660 return;
661
662 signals [signum].gotsig = 0;
663
664 for (w = signals [signum].head; w; w = w->next)
665 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666}
667
668static void
669sigcb (EV_P_ struct ev_io *iow, int revents)
670{
671 int signum;
672
673 read (sigpipe [0], &revents, 1);
674 gotsig = 0;
675
676 for (signum = signalmax; signum--; )
677 if (signals [signum].gotsig)
678 ev_feed_signal_event (EV_A_ signum + 1);
679}
680
681static void
682fd_intern (int fd) 822fd_intern (int fd)
683{ 823{
684#ifdef _WIN32 824#ifdef _WIN32
685 int arg = 1; 825 int arg = 1;
686 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 826 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
688 fcntl (fd, F_SETFD, FD_CLOEXEC); 828 fcntl (fd, F_SETFD, FD_CLOEXEC);
689 fcntl (fd, F_SETFL, O_NONBLOCK); 829 fcntl (fd, F_SETFL, O_NONBLOCK);
690#endif 830#endif
691} 831}
692 832
833static void noinline
834evpipe_init (EV_P)
835{
836 if (!ev_is_active (&pipeev))
837 {
838#if EV_USE_EVENTFD
839 if ((evfd = eventfd (0, 0)) >= 0)
840 {
841 evpipe [0] = -1;
842 fd_intern (evfd);
843 ev_io_set (&pipeev, evfd, EV_READ);
844 }
845 else
846#endif
847 {
848 while (pipe (evpipe))
849 syserr ("(libev) error creating signal/async pipe");
850
851 fd_intern (evpipe [0]);
852 fd_intern (evpipe [1]);
853 ev_io_set (&pipeev, evpipe [0], EV_READ);
854 }
855
856 ev_io_start (EV_A_ &pipeev);
857 ev_unref (EV_A); /* watcher should not keep loop alive */
858 }
859}
860
861void inline_size
862evpipe_write (EV_P_ EV_ATOMIC_T *flag)
863{
864 if (!*flag)
865 {
866 int old_errno = errno; /* save errno because write might clobber it */
867
868 *flag = 1;
869
870#if EV_USE_EVENTFD
871 if (evfd >= 0)
872 {
873 uint64_t counter = 1;
874 write (evfd, &counter, sizeof (uint64_t));
875 }
876 else
877#endif
878 write (evpipe [1], &old_errno, 1);
879
880 errno = old_errno;
881 }
882}
883
693static void 884static void
694siginit (EV_P) 885pipecb (EV_P_ ev_io *iow, int revents)
695{ 886{
696 fd_intern (sigpipe [0]); 887#if EV_USE_EVENTFD
697 fd_intern (sigpipe [1]); 888 if (evfd >= 0)
889 {
890 uint64_t counter = 1;
891 read (evfd, &counter, sizeof (uint64_t));
892 }
893 else
894#endif
895 {
896 char dummy;
897 read (evpipe [0], &dummy, 1);
898 }
698 899
699 ev_io_set (&sigev, sigpipe [0], EV_READ); 900 if (gotsig && ev_is_default_loop (EV_A))
700 ev_io_start (EV_A_ &sigev); 901 {
701 ev_unref (EV_A); /* child watcher should not keep loop alive */ 902 int signum;
903 gotsig = 0;
904
905 for (signum = signalmax; signum--; )
906 if (signals [signum].gotsig)
907 ev_feed_signal_event (EV_A_ signum + 1);
908 }
909
910#if EV_ASYNC_ENABLE
911 if (gotasync)
912 {
913 int i;
914 gotasync = 0;
915
916 for (i = asynccnt; i--; )
917 if (asyncs [i]->sent)
918 {
919 asyncs [i]->sent = 0;
920 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
921 }
922 }
923#endif
702} 924}
703 925
704/*****************************************************************************/ 926/*****************************************************************************/
705 927
706static struct ev_child *childs [PID_HASHSIZE]; 928static void
929ev_sighandler (int signum)
930{
931#if EV_MULTIPLICITY
932 struct ev_loop *loop = &default_loop_struct;
933#endif
934
935#if _WIN32
936 signal (signum, ev_sighandler);
937#endif
938
939 signals [signum - 1].gotsig = 1;
940 evpipe_write (EV_A_ &gotsig);
941}
942
943void noinline
944ev_feed_signal_event (EV_P_ int signum)
945{
946 WL w;
947
948#if EV_MULTIPLICITY
949 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
950#endif
951
952 --signum;
953
954 if (signum < 0 || signum >= signalmax)
955 return;
956
957 signals [signum].gotsig = 0;
958
959 for (w = signals [signum].head; w; w = w->next)
960 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
961}
962
963/*****************************************************************************/
964
965static WL childs [EV_PID_HASHSIZE];
707 966
708#ifndef _WIN32 967#ifndef _WIN32
709 968
710static struct ev_signal childev; 969static ev_signal childev;
970
971#ifndef WIFCONTINUED
972# define WIFCONTINUED(status) 0
973#endif
974
975void inline_speed
976child_reap (EV_P_ int chain, int pid, int status)
977{
978 ev_child *w;
979 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
980
981 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
982 {
983 if ((w->pid == pid || !w->pid)
984 && (!traced || (w->flags & 1)))
985 {
986 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
987 w->rpid = pid;
988 w->rstatus = status;
989 ev_feed_event (EV_A_ (W)w, EV_CHILD);
990 }
991 }
992}
711 993
712#ifndef WCONTINUED 994#ifndef WCONTINUED
713# define WCONTINUED 0 995# define WCONTINUED 0
714#endif 996#endif
715 997
716static void 998static void
717child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
718{
719 struct ev_child *w;
720
721 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
722 if (w->pid == pid || !w->pid)
723 {
724 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725 w->rpid = pid;
726 w->rstatus = status;
727 ev_feed_event (EV_A_ (W)w, EV_CHILD);
728 }
729}
730
731static void
732childcb (EV_P_ struct ev_signal *sw, int revents) 999childcb (EV_P_ ev_signal *sw, int revents)
733{ 1000{
734 int pid, status; 1001 int pid, status;
735 1002
1003 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1004 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737 { 1005 if (!WCONTINUED
1006 || errno != EINVAL
1007 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1008 return;
1009
738 /* make sure we are called again until all childs have been reaped */ 1010 /* make sure we are called again until all children have been reaped */
739 /* we need to do it this way so that the callback gets called before we continue */ 1011 /* we need to do it this way so that the callback gets called before we continue */
740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1012 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741 1013
742 child_reap (EV_A_ sw, pid, pid, status); 1014 child_reap (EV_A_ pid, pid, status);
1015 if (EV_PID_HASHSIZE > 1)
743 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1016 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744 }
745} 1017}
746 1018
747#endif 1019#endif
748 1020
749/*****************************************************************************/ 1021/*****************************************************************************/
… …
775{ 1047{
776 return EV_VERSION_MINOR; 1048 return EV_VERSION_MINOR;
777} 1049}
778 1050
779/* return true if we are running with elevated privileges and should ignore env variables */ 1051/* return true if we are running with elevated privileges and should ignore env variables */
780static int 1052int inline_size
781enable_secure (void) 1053enable_secure (void)
782{ 1054{
783#ifdef _WIN32 1055#ifdef _WIN32
784 return 0; 1056 return 0;
785#else 1057#else
… …
821} 1093}
822 1094
823unsigned int 1095unsigned int
824ev_embeddable_backends (void) 1096ev_embeddable_backends (void)
825{ 1097{
826 return EVBACKEND_EPOLL 1098 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
827 | EVBACKEND_KQUEUE 1099
828 | EVBACKEND_PORT; 1100 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1101 /* please fix it and tell me how to detect the fix */
1102 flags &= ~EVBACKEND_EPOLL;
1103
1104 return flags;
829} 1105}
830 1106
831unsigned int 1107unsigned int
832ev_backend (EV_P) 1108ev_backend (EV_P)
833{ 1109{
834 return backend; 1110 return backend;
835} 1111}
836 1112
837static void 1113unsigned int
1114ev_loop_count (EV_P)
1115{
1116 return loop_count;
1117}
1118
1119void
1120ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1121{
1122 io_blocktime = interval;
1123}
1124
1125void
1126ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1127{
1128 timeout_blocktime = interval;
1129}
1130
1131static void noinline
838loop_init (EV_P_ unsigned int flags) 1132loop_init (EV_P_ unsigned int flags)
839{ 1133{
840 if (!backend) 1134 if (!backend)
841 { 1135 {
842#if EV_USE_MONOTONIC 1136#if EV_USE_MONOTONIC
… …
845 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1139 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
846 have_monotonic = 1; 1140 have_monotonic = 1;
847 } 1141 }
848#endif 1142#endif
849 1143
850 ev_rt_now = ev_time (); 1144 ev_rt_now = ev_time ();
851 mn_now = get_clock (); 1145 mn_now = get_clock ();
852 now_floor = mn_now; 1146 now_floor = mn_now;
853 rtmn_diff = ev_rt_now - mn_now; 1147 rtmn_diff = ev_rt_now - mn_now;
1148
1149 io_blocktime = 0.;
1150 timeout_blocktime = 0.;
1151 backend = 0;
1152 backend_fd = -1;
1153 gotasync = 0;
1154#if EV_USE_INOTIFY
1155 fs_fd = -2;
1156#endif
1157
1158 /* pid check not overridable via env */
1159#ifndef _WIN32
1160 if (flags & EVFLAG_FORKCHECK)
1161 curpid = getpid ();
1162#endif
854 1163
855 if (!(flags & EVFLAG_NOENV) 1164 if (!(flags & EVFLAG_NOENV)
856 && !enable_secure () 1165 && !enable_secure ()
857 && getenv ("LIBEV_FLAGS")) 1166 && getenv ("LIBEV_FLAGS"))
858 flags = atoi (getenv ("LIBEV_FLAGS")); 1167 flags = atoi (getenv ("LIBEV_FLAGS"));
859 1168
860 if (!(flags & 0x0000ffffUL)) 1169 if (!(flags & 0x0000ffffUL))
861 flags |= ev_recommended_backends (); 1170 flags |= ev_recommended_backends ();
862 1171
863 backend = 0;
864#if EV_USE_PORT 1172#if EV_USE_PORT
865 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1173 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866#endif 1174#endif
867#if EV_USE_KQUEUE 1175#if EV_USE_KQUEUE
868 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1176 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
875#endif 1183#endif
876#if EV_USE_SELECT 1184#if EV_USE_SELECT
877 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1185 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
878#endif 1186#endif
879 1187
880 ev_init (&sigev, sigcb); 1188 ev_init (&pipeev, pipecb);
881 ev_set_priority (&sigev, EV_MAXPRI); 1189 ev_set_priority (&pipeev, EV_MAXPRI);
882 } 1190 }
883} 1191}
884 1192
885static void 1193static void noinline
886loop_destroy (EV_P) 1194loop_destroy (EV_P)
887{ 1195{
888 int i; 1196 int i;
1197
1198 if (ev_is_active (&pipeev))
1199 {
1200 ev_ref (EV_A); /* signal watcher */
1201 ev_io_stop (EV_A_ &pipeev);
1202
1203#if EV_USE_EVENTFD
1204 if (evfd >= 0)
1205 close (evfd);
1206#endif
1207
1208 if (evpipe [0] >= 0)
1209 {
1210 close (evpipe [0]);
1211 close (evpipe [1]);
1212 }
1213 }
1214
1215#if EV_USE_INOTIFY
1216 if (fs_fd >= 0)
1217 close (fs_fd);
1218#endif
1219
1220 if (backend_fd >= 0)
1221 close (backend_fd);
889 1222
890#if EV_USE_PORT 1223#if EV_USE_PORT
891 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1224 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892#endif 1225#endif
893#if EV_USE_KQUEUE 1226#if EV_USE_KQUEUE
… …
902#if EV_USE_SELECT 1235#if EV_USE_SELECT
903 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1236 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904#endif 1237#endif
905 1238
906 for (i = NUMPRI; i--; ) 1239 for (i = NUMPRI; i--; )
1240 {
907 array_free (pending, [i]); 1241 array_free (pending, [i]);
1242#if EV_IDLE_ENABLE
1243 array_free (idle, [i]);
1244#endif
1245 }
1246
1247 ev_free (anfds); anfdmax = 0;
908 1248
909 /* have to use the microsoft-never-gets-it-right macro */ 1249 /* have to use the microsoft-never-gets-it-right macro */
910 array_free (fdchange, EMPTY0); 1250 array_free (fdchange, EMPTY);
911 array_free (timer, EMPTY0); 1251 array_free (timer, EMPTY);
912#if EV_PERIODICS 1252#if EV_PERIODIC_ENABLE
913 array_free (periodic, EMPTY0); 1253 array_free (periodic, EMPTY);
914#endif 1254#endif
1255#if EV_FORK_ENABLE
915 array_free (idle, EMPTY0); 1256 array_free (fork, EMPTY);
1257#endif
916 array_free (prepare, EMPTY0); 1258 array_free (prepare, EMPTY);
917 array_free (check, EMPTY0); 1259 array_free (check, EMPTY);
1260#if EV_ASYNC_ENABLE
1261 array_free (async, EMPTY);
1262#endif
918 1263
919 backend = 0; 1264 backend = 0;
920} 1265}
921 1266
922static void 1267void inline_size infy_fork (EV_P);
1268
1269void inline_size
923loop_fork (EV_P) 1270loop_fork (EV_P)
924{ 1271{
925#if EV_USE_PORT 1272#if EV_USE_PORT
926 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1273 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927#endif 1274#endif
… …
929 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1276 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930#endif 1277#endif
931#if EV_USE_EPOLL 1278#if EV_USE_EPOLL
932 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1279 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
933#endif 1280#endif
1281#if EV_USE_INOTIFY
1282 infy_fork (EV_A);
1283#endif
934 1284
935 if (ev_is_active (&sigev)) 1285 if (ev_is_active (&pipeev))
936 { 1286 {
937 /* default loop */ 1287 /* this "locks" the handlers against writing to the pipe */
1288 /* while we modify the fd vars */
1289 gotsig = 1;
1290#if EV_ASYNC_ENABLE
1291 gotasync = 1;
1292#endif
938 1293
939 ev_ref (EV_A); 1294 ev_ref (EV_A);
940 ev_io_stop (EV_A_ &sigev); 1295 ev_io_stop (EV_A_ &pipeev);
1296
1297#if EV_USE_EVENTFD
1298 if (evfd >= 0)
1299 close (evfd);
1300#endif
1301
1302 if (evpipe [0] >= 0)
1303 {
941 close (sigpipe [0]); 1304 close (evpipe [0]);
942 close (sigpipe [1]); 1305 close (evpipe [1]);
1306 }
943 1307
944 while (pipe (sigpipe))
945 syserr ("(libev) error creating pipe");
946
947 siginit (EV_A); 1308 evpipe_init (EV_A);
1309 /* now iterate over everything, in case we missed something */
1310 pipecb (EV_A_ &pipeev, EV_READ);
948 } 1311 }
949 1312
950 postfork = 0; 1313 postfork = 0;
951} 1314}
952 1315
… …
974} 1337}
975 1338
976void 1339void
977ev_loop_fork (EV_P) 1340ev_loop_fork (EV_P)
978{ 1341{
979 postfork = 1; 1342 postfork = 1; /* must be in line with ev_default_fork */
980} 1343}
981 1344
982#endif 1345#endif
983 1346
984#if EV_MULTIPLICITY 1347#if EV_MULTIPLICITY
… …
987#else 1350#else
988int 1351int
989ev_default_loop (unsigned int flags) 1352ev_default_loop (unsigned int flags)
990#endif 1353#endif
991{ 1354{
992 if (sigpipe [0] == sigpipe [1])
993 if (pipe (sigpipe))
994 return 0;
995
996 if (!ev_default_loop_ptr) 1355 if (!ev_default_loop_ptr)
997 { 1356 {
998#if EV_MULTIPLICITY 1357#if EV_MULTIPLICITY
999 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1358 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1000#else 1359#else
… …
1003 1362
1004 loop_init (EV_A_ flags); 1363 loop_init (EV_A_ flags);
1005 1364
1006 if (ev_backend (EV_A)) 1365 if (ev_backend (EV_A))
1007 { 1366 {
1008 siginit (EV_A);
1009
1010#ifndef _WIN32 1367#ifndef _WIN32
1011 ev_signal_init (&childev, childcb, SIGCHLD); 1368 ev_signal_init (&childev, childcb, SIGCHLD);
1012 ev_set_priority (&childev, EV_MAXPRI); 1369 ev_set_priority (&childev, EV_MAXPRI);
1013 ev_signal_start (EV_A_ &childev); 1370 ev_signal_start (EV_A_ &childev);
1014 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1371 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1031#ifndef _WIN32 1388#ifndef _WIN32
1032 ev_ref (EV_A); /* child watcher */ 1389 ev_ref (EV_A); /* child watcher */
1033 ev_signal_stop (EV_A_ &childev); 1390 ev_signal_stop (EV_A_ &childev);
1034#endif 1391#endif
1035 1392
1036 ev_ref (EV_A); /* signal watcher */
1037 ev_io_stop (EV_A_ &sigev);
1038
1039 close (sigpipe [0]); sigpipe [0] = 0;
1040 close (sigpipe [1]); sigpipe [1] = 0;
1041
1042 loop_destroy (EV_A); 1393 loop_destroy (EV_A);
1043} 1394}
1044 1395
1045void 1396void
1046ev_default_fork (void) 1397ev_default_fork (void)
… …
1048#if EV_MULTIPLICITY 1399#if EV_MULTIPLICITY
1049 struct ev_loop *loop = ev_default_loop_ptr; 1400 struct ev_loop *loop = ev_default_loop_ptr;
1050#endif 1401#endif
1051 1402
1052 if (backend) 1403 if (backend)
1053 postfork = 1; 1404 postfork = 1; /* must be in line with ev_loop_fork */
1054} 1405}
1055 1406
1056/*****************************************************************************/ 1407/*****************************************************************************/
1057 1408
1058static int 1409void
1059any_pending (EV_P) 1410ev_invoke (EV_P_ void *w, int revents)
1060{ 1411{
1061 int pri; 1412 EV_CB_INVOKE ((W)w, revents);
1062
1063 for (pri = NUMPRI; pri--; )
1064 if (pendingcnt [pri])
1065 return 1;
1066
1067 return 0;
1068} 1413}
1069 1414
1070inline void 1415void inline_speed
1071call_pending (EV_P) 1416call_pending (EV_P)
1072{ 1417{
1073 int pri; 1418 int pri;
1074 1419
1075 for (pri = NUMPRI; pri--; ) 1420 for (pri = NUMPRI; pri--; )
… …
1077 { 1422 {
1078 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1423 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079 1424
1080 if (expect_true (p->w)) 1425 if (expect_true (p->w))
1081 { 1426 {
1427 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1428
1082 p->w->pending = 0; 1429 p->w->pending = 0;
1083 EV_CB_INVOKE (p->w, p->events); 1430 EV_CB_INVOKE (p->w, p->events);
1084 } 1431 }
1085 } 1432 }
1086} 1433}
1087 1434
1088inline void 1435void inline_size
1089timers_reify (EV_P) 1436timers_reify (EV_P)
1090{ 1437{
1091 while (timercnt && ((WT)timers [0])->at <= mn_now) 1438 while (timercnt && ((WT)timers [0])->at <= mn_now)
1092 { 1439 {
1093 struct ev_timer *w = timers [0]; 1440 ev_timer *w = (ev_timer *)timers [0];
1094 1441
1095 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1442 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096 1443
1097 /* first reschedule or stop timer */ 1444 /* first reschedule or stop timer */
1098 if (w->repeat) 1445 if (w->repeat)
1099 { 1446 {
1100 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1447 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101 1448
1102 ((WT)w)->at += w->repeat; 1449 ((WT)w)->at += w->repeat;
1103 if (((WT)w)->at < mn_now) 1450 if (((WT)w)->at < mn_now)
1104 ((WT)w)->at = mn_now; 1451 ((WT)w)->at = mn_now;
1105 1452
1106 downheap ((WT *)timers, timercnt, 0); 1453 downheap (timers, timercnt, 0);
1107 } 1454 }
1108 else 1455 else
1109 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1456 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110 1457
1111 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1458 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112 } 1459 }
1113} 1460}
1114 1461
1115#if EV_PERIODICS 1462#if EV_PERIODIC_ENABLE
1116inline void 1463void inline_size
1117periodics_reify (EV_P) 1464periodics_reify (EV_P)
1118{ 1465{
1119 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1466 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120 { 1467 {
1121 struct ev_periodic *w = periodics [0]; 1468 ev_periodic *w = (ev_periodic *)periodics [0];
1122 1469
1123 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1470 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124 1471
1125 /* first reschedule or stop timer */ 1472 /* first reschedule or stop timer */
1126 if (w->reschedule_cb) 1473 if (w->reschedule_cb)
1127 { 1474 {
1128 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1475 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1129 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1476 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1130 downheap ((WT *)periodics, periodiccnt, 0); 1477 downheap (periodics, periodiccnt, 0);
1131 } 1478 }
1132 else if (w->interval) 1479 else if (w->interval)
1133 { 1480 {
1134 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1481 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1482 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1135 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1483 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1136 downheap ((WT *)periodics, periodiccnt, 0); 1484 downheap (periodics, periodiccnt, 0);
1137 } 1485 }
1138 else 1486 else
1139 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1487 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140 1488
1141 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1489 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142 } 1490 }
1143} 1491}
1144 1492
1145static void 1493static void noinline
1146periodics_reschedule (EV_P) 1494periodics_reschedule (EV_P)
1147{ 1495{
1148 int i; 1496 int i;
1149 1497
1150 /* adjust periodics after time jump */ 1498 /* adjust periodics after time jump */
1151 for (i = 0; i < periodiccnt; ++i) 1499 for (i = 0; i < periodiccnt; ++i)
1152 { 1500 {
1153 struct ev_periodic *w = periodics [i]; 1501 ev_periodic *w = (ev_periodic *)periodics [i];
1154 1502
1155 if (w->reschedule_cb) 1503 if (w->reschedule_cb)
1156 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1504 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157 else if (w->interval) 1505 else if (w->interval)
1158 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1159 } 1507 }
1160 1508
1161 /* now rebuild the heap */ 1509 /* now rebuild the heap */
1162 for (i = periodiccnt >> 1; i--; ) 1510 for (i = periodiccnt >> 1; i--; )
1163 downheap ((WT *)periodics, periodiccnt, i); 1511 downheap (periodics, periodiccnt, i);
1164} 1512}
1165#endif 1513#endif
1166 1514
1167inline int 1515#if EV_IDLE_ENABLE
1168time_update_monotonic (EV_P) 1516void inline_size
1517idle_reify (EV_P)
1169{ 1518{
1519 if (expect_false (idleall))
1520 {
1521 int pri;
1522
1523 for (pri = NUMPRI; pri--; )
1524 {
1525 if (pendingcnt [pri])
1526 break;
1527
1528 if (idlecnt [pri])
1529 {
1530 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1531 break;
1532 }
1533 }
1534 }
1535}
1536#endif
1537
1538void inline_speed
1539time_update (EV_P_ ev_tstamp max_block)
1540{
1541 int i;
1542
1543#if EV_USE_MONOTONIC
1544 if (expect_true (have_monotonic))
1545 {
1546 ev_tstamp odiff = rtmn_diff;
1547
1170 mn_now = get_clock (); 1548 mn_now = get_clock ();
1171 1549
1550 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1551 /* interpolate in the meantime */
1172 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1552 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173 { 1553 {
1174 ev_rt_now = rtmn_diff + mn_now; 1554 ev_rt_now = rtmn_diff + mn_now;
1175 return 0; 1555 return;
1176 } 1556 }
1177 else 1557
1178 {
1179 now_floor = mn_now; 1558 now_floor = mn_now;
1180 ev_rt_now = ev_time (); 1559 ev_rt_now = ev_time ();
1181 return 1;
1182 }
1183}
1184 1560
1185inline void 1561 /* loop a few times, before making important decisions.
1186time_update (EV_P) 1562 * on the choice of "4": one iteration isn't enough,
1187{ 1563 * in case we get preempted during the calls to
1188 int i; 1564 * ev_time and get_clock. a second call is almost guaranteed
1189 1565 * to succeed in that case, though. and looping a few more times
1190#if EV_USE_MONOTONIC 1566 * doesn't hurt either as we only do this on time-jumps or
1191 if (expect_true (have_monotonic)) 1567 * in the unlikely event of having been preempted here.
1192 { 1568 */
1193 if (time_update_monotonic (EV_A)) 1569 for (i = 4; --i; )
1194 { 1570 {
1195 ev_tstamp odiff = rtmn_diff;
1196
1197 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1198 {
1199 rtmn_diff = ev_rt_now - mn_now; 1571 rtmn_diff = ev_rt_now - mn_now;
1200 1572
1201 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1573 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202 return; /* all is well */ 1574 return; /* all is well */
1203 1575
1204 ev_rt_now = ev_time (); 1576 ev_rt_now = ev_time ();
1205 mn_now = get_clock (); 1577 mn_now = get_clock ();
1206 now_floor = mn_now; 1578 now_floor = mn_now;
1207 } 1579 }
1208 1580
1209# if EV_PERIODICS 1581# if EV_PERIODIC_ENABLE
1582 periodics_reschedule (EV_A);
1583# endif
1584 /* no timer adjustment, as the monotonic clock doesn't jump */
1585 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1586 }
1587 else
1588#endif
1589 {
1590 ev_rt_now = ev_time ();
1591
1592 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1593 {
1594#if EV_PERIODIC_ENABLE
1210 periodics_reschedule (EV_A); 1595 periodics_reschedule (EV_A);
1211# endif 1596#endif
1212 /* no timer adjustment, as the monotonic clock doesn't jump */
1213 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214 }
1215 }
1216 else
1217#endif
1218 {
1219 ev_rt_now = ev_time ();
1220
1221 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1222 {
1223#if EV_PERIODICS
1224 periodics_reschedule (EV_A);
1225#endif
1226
1227 /* adjust timers. this is easy, as the offset is the same for all */ 1597 /* adjust timers. this is easy, as the offset is the same for all of them */
1228 for (i = 0; i < timercnt; ++i) 1598 for (i = 0; i < timercnt; ++i)
1229 ((WT)timers [i])->at += ev_rt_now - mn_now; 1599 ((WT)timers [i])->at += ev_rt_now - mn_now;
1230 } 1600 }
1231 1601
1232 mn_now = ev_rt_now; 1602 mn_now = ev_rt_now;
… …
1248static int loop_done; 1618static int loop_done;
1249 1619
1250void 1620void
1251ev_loop (EV_P_ int flags) 1621ev_loop (EV_P_ int flags)
1252{ 1622{
1253 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1623 loop_done = EVUNLOOP_CANCEL;
1254 ? EVUNLOOP_ONE
1255 : EVUNLOOP_CANCEL;
1256 1624
1257 while (activecnt) 1625 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1626
1627 do
1258 { 1628 {
1629#ifndef _WIN32
1630 if (expect_false (curpid)) /* penalise the forking check even more */
1631 if (expect_false (getpid () != curpid))
1632 {
1633 curpid = getpid ();
1634 postfork = 1;
1635 }
1636#endif
1637
1638#if EV_FORK_ENABLE
1639 /* we might have forked, so queue fork handlers */
1640 if (expect_false (postfork))
1641 if (forkcnt)
1642 {
1643 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1644 call_pending (EV_A);
1645 }
1646#endif
1647
1259 /* queue check watchers (and execute them) */ 1648 /* queue prepare watchers (and execute them) */
1260 if (expect_false (preparecnt)) 1649 if (expect_false (preparecnt))
1261 { 1650 {
1262 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1651 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1263 call_pending (EV_A); 1652 call_pending (EV_A);
1264 } 1653 }
1265 1654
1655 if (expect_false (!activecnt))
1656 break;
1657
1266 /* we might have forked, so reify kernel state if necessary */ 1658 /* we might have forked, so reify kernel state if necessary */
1267 if (expect_false (postfork)) 1659 if (expect_false (postfork))
1268 loop_fork (EV_A); 1660 loop_fork (EV_A);
1269 1661
1270 /* update fd-related kernel structures */ 1662 /* update fd-related kernel structures */
1271 fd_reify (EV_A); 1663 fd_reify (EV_A);
1272 1664
1273 /* calculate blocking time */ 1665 /* calculate blocking time */
1274 { 1666 {
1275 double block; 1667 ev_tstamp waittime = 0.;
1668 ev_tstamp sleeptime = 0.;
1276 1669
1277 if (flags & EVLOOP_NONBLOCK || idlecnt) 1670 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1278 block = 0.; /* do not block at all */
1279 else
1280 { 1671 {
1281 /* update time to cancel out callback processing overhead */ 1672 /* update time to cancel out callback processing overhead */
1282#if EV_USE_MONOTONIC
1283 if (expect_true (have_monotonic))
1284 time_update_monotonic (EV_A); 1673 time_update (EV_A_ 1e100);
1285 else
1286#endif
1287 {
1288 ev_rt_now = ev_time ();
1289 mn_now = ev_rt_now;
1290 }
1291 1674
1292 block = MAX_BLOCKTIME; 1675 waittime = MAX_BLOCKTIME;
1293 1676
1294 if (timercnt) 1677 if (timercnt)
1295 { 1678 {
1296 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1679 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1297 if (block > to) block = to; 1680 if (waittime > to) waittime = to;
1298 } 1681 }
1299 1682
1300#if EV_PERIODICS 1683#if EV_PERIODIC_ENABLE
1301 if (periodiccnt) 1684 if (periodiccnt)
1302 { 1685 {
1303 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1686 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1304 if (block > to) block = to; 1687 if (waittime > to) waittime = to;
1305 } 1688 }
1306#endif 1689#endif
1307 1690
1308 if (expect_false (block < 0.)) block = 0.; 1691 if (expect_false (waittime < timeout_blocktime))
1692 waittime = timeout_blocktime;
1693
1694 sleeptime = waittime - backend_fudge;
1695
1696 if (expect_true (sleeptime > io_blocktime))
1697 sleeptime = io_blocktime;
1698
1699 if (sleeptime)
1700 {
1701 ev_sleep (sleeptime);
1702 waittime -= sleeptime;
1703 }
1309 } 1704 }
1310 1705
1706 ++loop_count;
1311 backend_poll (EV_A_ block); 1707 backend_poll (EV_A_ waittime);
1708
1709 /* update ev_rt_now, do magic */
1710 time_update (EV_A_ waittime + sleeptime);
1312 } 1711 }
1313
1314 /* update ev_rt_now, do magic */
1315 time_update (EV_A);
1316 1712
1317 /* queue pending timers and reschedule them */ 1713 /* queue pending timers and reschedule them */
1318 timers_reify (EV_A); /* relative timers called last */ 1714 timers_reify (EV_A); /* relative timers called last */
1319#if EV_PERIODICS 1715#if EV_PERIODIC_ENABLE
1320 periodics_reify (EV_A); /* absolute timers called first */ 1716 periodics_reify (EV_A); /* absolute timers called first */
1321#endif 1717#endif
1322 1718
1719#if EV_IDLE_ENABLE
1323 /* queue idle watchers unless io or timers are pending */ 1720 /* queue idle watchers unless other events are pending */
1324 if (idlecnt && !any_pending (EV_A)) 1721 idle_reify (EV_A);
1325 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1722#endif
1326 1723
1327 /* queue check watchers, to be executed first */ 1724 /* queue check watchers, to be executed first */
1328 if (expect_false (checkcnt)) 1725 if (expect_false (checkcnt))
1329 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1726 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1330 1727
1331 call_pending (EV_A); 1728 call_pending (EV_A);
1332
1333 if (expect_false (loop_done))
1334 break;
1335 } 1729 }
1730 while (expect_true (
1731 activecnt
1732 && !loop_done
1733 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1734 ));
1336 1735
1337 if (loop_done == EVUNLOOP_ONE) 1736 if (loop_done == EVUNLOOP_ONE)
1338 loop_done = EVUNLOOP_CANCEL; 1737 loop_done = EVUNLOOP_CANCEL;
1339} 1738}
1340 1739
… …
1344 loop_done = how; 1743 loop_done = how;
1345} 1744}
1346 1745
1347/*****************************************************************************/ 1746/*****************************************************************************/
1348 1747
1349inline void 1748void inline_size
1350wlist_add (WL *head, WL elem) 1749wlist_add (WL *head, WL elem)
1351{ 1750{
1352 elem->next = *head; 1751 elem->next = *head;
1353 *head = elem; 1752 *head = elem;
1354} 1753}
1355 1754
1356inline void 1755void inline_size
1357wlist_del (WL *head, WL elem) 1756wlist_del (WL *head, WL elem)
1358{ 1757{
1359 while (*head) 1758 while (*head)
1360 { 1759 {
1361 if (*head == elem) 1760 if (*head == elem)
… …
1366 1765
1367 head = &(*head)->next; 1766 head = &(*head)->next;
1368 } 1767 }
1369} 1768}
1370 1769
1371inline void 1770void inline_speed
1372ev_clear_pending (EV_P_ W w) 1771clear_pending (EV_P_ W w)
1373{ 1772{
1374 if (w->pending) 1773 if (w->pending)
1375 { 1774 {
1376 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1775 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1377 w->pending = 0; 1776 w->pending = 0;
1378 } 1777 }
1379} 1778}
1380 1779
1381inline void 1780int
1781ev_clear_pending (EV_P_ void *w)
1782{
1783 W w_ = (W)w;
1784 int pending = w_->pending;
1785
1786 if (expect_true (pending))
1787 {
1788 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1789 w_->pending = 0;
1790 p->w = 0;
1791 return p->events;
1792 }
1793 else
1794 return 0;
1795}
1796
1797void inline_size
1798pri_adjust (EV_P_ W w)
1799{
1800 int pri = w->priority;
1801 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1802 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1803 w->priority = pri;
1804}
1805
1806void inline_speed
1382ev_start (EV_P_ W w, int active) 1807ev_start (EV_P_ W w, int active)
1383{ 1808{
1384 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1809 pri_adjust (EV_A_ w);
1385 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1386
1387 w->active = active; 1810 w->active = active;
1388 ev_ref (EV_A); 1811 ev_ref (EV_A);
1389} 1812}
1390 1813
1391inline void 1814void inline_size
1392ev_stop (EV_P_ W w) 1815ev_stop (EV_P_ W w)
1393{ 1816{
1394 ev_unref (EV_A); 1817 ev_unref (EV_A);
1395 w->active = 0; 1818 w->active = 0;
1396} 1819}
1397 1820
1398/*****************************************************************************/ 1821/*****************************************************************************/
1399 1822
1400void 1823void noinline
1401ev_io_start (EV_P_ struct ev_io *w) 1824ev_io_start (EV_P_ ev_io *w)
1402{ 1825{
1403 int fd = w->fd; 1826 int fd = w->fd;
1404 1827
1405 if (expect_false (ev_is_active (w))) 1828 if (expect_false (ev_is_active (w)))
1406 return; 1829 return;
1407 1830
1408 assert (("ev_io_start called with negative fd", fd >= 0)); 1831 assert (("ev_io_start called with negative fd", fd >= 0));
1409 1832
1410 ev_start (EV_A_ (W)w, 1); 1833 ev_start (EV_A_ (W)w, 1);
1411 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1834 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1412 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1835 wlist_add (&anfds[fd].head, (WL)w);
1413 1836
1414 fd_change (EV_A_ fd); 1837 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1838 w->events &= ~EV_IOFDSET;
1415} 1839}
1416 1840
1417void 1841void noinline
1418ev_io_stop (EV_P_ struct ev_io *w) 1842ev_io_stop (EV_P_ ev_io *w)
1419{ 1843{
1420 ev_clear_pending (EV_A_ (W)w); 1844 clear_pending (EV_A_ (W)w);
1421 if (expect_false (!ev_is_active (w))) 1845 if (expect_false (!ev_is_active (w)))
1422 return; 1846 return;
1423 1847
1424 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1848 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1425 1849
1426 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1850 wlist_del (&anfds[w->fd].head, (WL)w);
1427 ev_stop (EV_A_ (W)w); 1851 ev_stop (EV_A_ (W)w);
1428 1852
1429 fd_change (EV_A_ w->fd); 1853 fd_change (EV_A_ w->fd, 1);
1430} 1854}
1431 1855
1432void 1856void noinline
1433ev_timer_start (EV_P_ struct ev_timer *w) 1857ev_timer_start (EV_P_ ev_timer *w)
1434{ 1858{
1435 if (expect_false (ev_is_active (w))) 1859 if (expect_false (ev_is_active (w)))
1436 return; 1860 return;
1437 1861
1438 ((WT)w)->at += mn_now; 1862 ((WT)w)->at += mn_now;
1439 1863
1440 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1864 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1441 1865
1442 ev_start (EV_A_ (W)w, ++timercnt); 1866 ev_start (EV_A_ (W)w, ++timercnt);
1443 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1867 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1444 timers [timercnt - 1] = w; 1868 timers [timercnt - 1] = (WT)w;
1445 upheap ((WT *)timers, timercnt - 1); 1869 upheap (timers, timercnt - 1);
1446 1870
1447 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1871 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1448} 1872}
1449 1873
1450void 1874void noinline
1451ev_timer_stop (EV_P_ struct ev_timer *w) 1875ev_timer_stop (EV_P_ ev_timer *w)
1452{ 1876{
1453 ev_clear_pending (EV_A_ (W)w); 1877 clear_pending (EV_A_ (W)w);
1454 if (expect_false (!ev_is_active (w))) 1878 if (expect_false (!ev_is_active (w)))
1455 return; 1879 return;
1456 1880
1457 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1881 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1458 1882
1883 {
1884 int active = ((W)w)->active;
1885
1459 if (expect_true (((W)w)->active < timercnt--)) 1886 if (expect_true (--active < --timercnt))
1460 { 1887 {
1461 timers [((W)w)->active - 1] = timers [timercnt]; 1888 timers [active] = timers [timercnt];
1462 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1889 adjustheap (timers, timercnt, active);
1463 } 1890 }
1891 }
1464 1892
1465 ((WT)w)->at -= mn_now; 1893 ((WT)w)->at -= mn_now;
1466 1894
1467 ev_stop (EV_A_ (W)w); 1895 ev_stop (EV_A_ (W)w);
1468} 1896}
1469 1897
1470void 1898void noinline
1471ev_timer_again (EV_P_ struct ev_timer *w) 1899ev_timer_again (EV_P_ ev_timer *w)
1472{ 1900{
1473 if (ev_is_active (w)) 1901 if (ev_is_active (w))
1474 { 1902 {
1475 if (w->repeat) 1903 if (w->repeat)
1476 { 1904 {
1477 ((WT)w)->at = mn_now + w->repeat; 1905 ((WT)w)->at = mn_now + w->repeat;
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1906 adjustheap (timers, timercnt, ((W)w)->active - 1);
1479 } 1907 }
1480 else 1908 else
1481 ev_timer_stop (EV_A_ w); 1909 ev_timer_stop (EV_A_ w);
1482 } 1910 }
1483 else if (w->repeat) 1911 else if (w->repeat)
… …
1485 w->at = w->repeat; 1913 w->at = w->repeat;
1486 ev_timer_start (EV_A_ w); 1914 ev_timer_start (EV_A_ w);
1487 } 1915 }
1488} 1916}
1489 1917
1490#if EV_PERIODICS 1918#if EV_PERIODIC_ENABLE
1491void 1919void noinline
1492ev_periodic_start (EV_P_ struct ev_periodic *w) 1920ev_periodic_start (EV_P_ ev_periodic *w)
1493{ 1921{
1494 if (expect_false (ev_is_active (w))) 1922 if (expect_false (ev_is_active (w)))
1495 return; 1923 return;
1496 1924
1497 if (w->reschedule_cb) 1925 if (w->reschedule_cb)
1498 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1926 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1499 else if (w->interval) 1927 else if (w->interval)
1500 { 1928 {
1501 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1929 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1502 /* this formula differs from the one in periodic_reify because we do not always round up */ 1930 /* this formula differs from the one in periodic_reify because we do not always round up */
1503 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1931 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1504 } 1932 }
1933 else
1934 ((WT)w)->at = w->offset;
1505 1935
1506 ev_start (EV_A_ (W)w, ++periodiccnt); 1936 ev_start (EV_A_ (W)w, ++periodiccnt);
1507 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1937 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1508 periodics [periodiccnt - 1] = w; 1938 periodics [periodiccnt - 1] = (WT)w;
1509 upheap ((WT *)periodics, periodiccnt - 1); 1939 upheap (periodics, periodiccnt - 1);
1510 1940
1511 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1941 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1512} 1942}
1513 1943
1514void 1944void noinline
1515ev_periodic_stop (EV_P_ struct ev_periodic *w) 1945ev_periodic_stop (EV_P_ ev_periodic *w)
1516{ 1946{
1517 ev_clear_pending (EV_A_ (W)w); 1947 clear_pending (EV_A_ (W)w);
1518 if (expect_false (!ev_is_active (w))) 1948 if (expect_false (!ev_is_active (w)))
1519 return; 1949 return;
1520 1950
1521 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1951 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1522 1952
1953 {
1954 int active = ((W)w)->active;
1955
1523 if (expect_true (((W)w)->active < periodiccnt--)) 1956 if (expect_true (--active < --periodiccnt))
1524 { 1957 {
1525 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1958 periodics [active] = periodics [periodiccnt];
1526 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1959 adjustheap (periodics, periodiccnt, active);
1527 } 1960 }
1961 }
1528 1962
1529 ev_stop (EV_A_ (W)w); 1963 ev_stop (EV_A_ (W)w);
1530} 1964}
1531 1965
1532void 1966void noinline
1533ev_periodic_again (EV_P_ struct ev_periodic *w) 1967ev_periodic_again (EV_P_ ev_periodic *w)
1534{ 1968{
1535 /* TODO: use adjustheap and recalculation */ 1969 /* TODO: use adjustheap and recalculation */
1536 ev_periodic_stop (EV_A_ w); 1970 ev_periodic_stop (EV_A_ w);
1537 ev_periodic_start (EV_A_ w); 1971 ev_periodic_start (EV_A_ w);
1538} 1972}
1539#endif 1973#endif
1540 1974
1541void
1542ev_idle_start (EV_P_ struct ev_idle *w)
1543{
1544 if (expect_false (ev_is_active (w)))
1545 return;
1546
1547 ev_start (EV_A_ (W)w, ++idlecnt);
1548 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1549 idles [idlecnt - 1] = w;
1550}
1551
1552void
1553ev_idle_stop (EV_P_ struct ev_idle *w)
1554{
1555 ev_clear_pending (EV_A_ (W)w);
1556 if (expect_false (!ev_is_active (w)))
1557 return;
1558
1559 idles [((W)w)->active - 1] = idles [--idlecnt];
1560 ev_stop (EV_A_ (W)w);
1561}
1562
1563void
1564ev_prepare_start (EV_P_ struct ev_prepare *w)
1565{
1566 if (expect_false (ev_is_active (w)))
1567 return;
1568
1569 ev_start (EV_A_ (W)w, ++preparecnt);
1570 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1571 prepares [preparecnt - 1] = w;
1572}
1573
1574void
1575ev_prepare_stop (EV_P_ struct ev_prepare *w)
1576{
1577 ev_clear_pending (EV_A_ (W)w);
1578 if (expect_false (!ev_is_active (w)))
1579 return;
1580
1581 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1582 ev_stop (EV_A_ (W)w);
1583}
1584
1585void
1586ev_check_start (EV_P_ struct ev_check *w)
1587{
1588 if (expect_false (ev_is_active (w)))
1589 return;
1590
1591 ev_start (EV_A_ (W)w, ++checkcnt);
1592 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1593 checks [checkcnt - 1] = w;
1594}
1595
1596void
1597ev_check_stop (EV_P_ struct ev_check *w)
1598{
1599 ev_clear_pending (EV_A_ (W)w);
1600 if (expect_false (!ev_is_active (w)))
1601 return;
1602
1603 checks [((W)w)->active - 1] = checks [--checkcnt];
1604 ev_stop (EV_A_ (W)w);
1605}
1606
1607#ifndef SA_RESTART 1975#ifndef SA_RESTART
1608# define SA_RESTART 0 1976# define SA_RESTART 0
1609#endif 1977#endif
1610 1978
1611void 1979void noinline
1612ev_signal_start (EV_P_ struct ev_signal *w) 1980ev_signal_start (EV_P_ ev_signal *w)
1613{ 1981{
1614#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1615 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1983 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1616#endif 1984#endif
1617 if (expect_false (ev_is_active (w))) 1985 if (expect_false (ev_is_active (w)))
1618 return; 1986 return;
1619 1987
1620 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1988 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1621 1989
1990 evpipe_init (EV_A);
1991
1992 {
1993#ifndef _WIN32
1994 sigset_t full, prev;
1995 sigfillset (&full);
1996 sigprocmask (SIG_SETMASK, &full, &prev);
1997#endif
1998
1999 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2000
2001#ifndef _WIN32
2002 sigprocmask (SIG_SETMASK, &prev, 0);
2003#endif
2004 }
2005
1622 ev_start (EV_A_ (W)w, 1); 2006 ev_start (EV_A_ (W)w, 1);
1623 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1624 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2007 wlist_add (&signals [w->signum - 1].head, (WL)w);
1625 2008
1626 if (!((WL)w)->next) 2009 if (!((WL)w)->next)
1627 { 2010 {
1628#if _WIN32 2011#if _WIN32
1629 signal (w->signum, sighandler); 2012 signal (w->signum, ev_sighandler);
1630#else 2013#else
1631 struct sigaction sa; 2014 struct sigaction sa;
1632 sa.sa_handler = sighandler; 2015 sa.sa_handler = ev_sighandler;
1633 sigfillset (&sa.sa_mask); 2016 sigfillset (&sa.sa_mask);
1634 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2017 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1635 sigaction (w->signum, &sa, 0); 2018 sigaction (w->signum, &sa, 0);
1636#endif 2019#endif
1637 } 2020 }
1638} 2021}
1639 2022
1640void 2023void noinline
1641ev_signal_stop (EV_P_ struct ev_signal *w) 2024ev_signal_stop (EV_P_ ev_signal *w)
1642{ 2025{
1643 ev_clear_pending (EV_A_ (W)w); 2026 clear_pending (EV_A_ (W)w);
1644 if (expect_false (!ev_is_active (w))) 2027 if (expect_false (!ev_is_active (w)))
1645 return; 2028 return;
1646 2029
1647 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2030 wlist_del (&signals [w->signum - 1].head, (WL)w);
1648 ev_stop (EV_A_ (W)w); 2031 ev_stop (EV_A_ (W)w);
1649 2032
1650 if (!signals [w->signum - 1].head) 2033 if (!signals [w->signum - 1].head)
1651 signal (w->signum, SIG_DFL); 2034 signal (w->signum, SIG_DFL);
1652} 2035}
1653 2036
1654void 2037void
1655ev_child_start (EV_P_ struct ev_child *w) 2038ev_child_start (EV_P_ ev_child *w)
1656{ 2039{
1657#if EV_MULTIPLICITY 2040#if EV_MULTIPLICITY
1658 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2041 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1659#endif 2042#endif
1660 if (expect_false (ev_is_active (w))) 2043 if (expect_false (ev_is_active (w)))
1661 return; 2044 return;
1662 2045
1663 ev_start (EV_A_ (W)w, 1); 2046 ev_start (EV_A_ (W)w, 1);
1664 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2047 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1665} 2048}
1666 2049
1667void 2050void
1668ev_child_stop (EV_P_ struct ev_child *w) 2051ev_child_stop (EV_P_ ev_child *w)
1669{ 2052{
1670 ev_clear_pending (EV_A_ (W)w); 2053 clear_pending (EV_A_ (W)w);
1671 if (expect_false (!ev_is_active (w))) 2054 if (expect_false (!ev_is_active (w)))
1672 return; 2055 return;
1673 2056
1674 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2057 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1675 ev_stop (EV_A_ (W)w); 2058 ev_stop (EV_A_ (W)w);
1676} 2059}
1677 2060
1678#if EV_MULTIPLICITY 2061#if EV_STAT_ENABLE
2062
2063# ifdef _WIN32
2064# undef lstat
2065# define lstat(a,b) _stati64 (a,b)
2066# endif
2067
2068#define DEF_STAT_INTERVAL 5.0074891
2069#define MIN_STAT_INTERVAL 0.1074891
2070
2071static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2072
2073#if EV_USE_INOTIFY
2074# define EV_INOTIFY_BUFSIZE 8192
2075
2076static void noinline
2077infy_add (EV_P_ ev_stat *w)
2078{
2079 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);
2080
2081 if (w->wd < 0)
2082 {
2083 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2084
2085 /* monitor some parent directory for speedup hints */
2086 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2087 {
2088 char path [4096];
2089 strcpy (path, w->path);
2090
2091 do
2092 {
2093 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2094 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2095
2096 char *pend = strrchr (path, '/');
2097
2098 if (!pend)
2099 break; /* whoops, no '/', complain to your admin */
2100
2101 *pend = 0;
2102 w->wd = inotify_add_watch (fs_fd, path, mask);
2103 }
2104 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2105 }
2106 }
2107 else
2108 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2109
2110 if (w->wd >= 0)
2111 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2112}
2113
2114static void noinline
2115infy_del (EV_P_ ev_stat *w)
2116{
2117 int slot;
2118 int wd = w->wd;
2119
2120 if (wd < 0)
2121 return;
2122
2123 w->wd = -2;
2124 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2125 wlist_del (&fs_hash [slot].head, (WL)w);
2126
2127 /* remove this watcher, if others are watching it, they will rearm */
2128 inotify_rm_watch (fs_fd, wd);
2129}
2130
2131static void noinline
2132infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2133{
2134 if (slot < 0)
2135 /* overflow, need to check for all hahs slots */
2136 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2137 infy_wd (EV_A_ slot, wd, ev);
2138 else
2139 {
2140 WL w_;
2141
2142 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2143 {
2144 ev_stat *w = (ev_stat *)w_;
2145 w_ = w_->next; /* lets us remove this watcher and all before it */
2146
2147 if (w->wd == wd || wd == -1)
2148 {
2149 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2150 {
2151 w->wd = -1;
2152 infy_add (EV_A_ w); /* re-add, no matter what */
2153 }
2154
2155 stat_timer_cb (EV_A_ &w->timer, 0);
2156 }
2157 }
2158 }
2159}
2160
1679static void 2161static void
1680embed_cb (EV_P_ struct ev_io *io, int revents) 2162infy_cb (EV_P_ ev_io *w, int revents)
1681{ 2163{
1682 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io)); 2164 char buf [EV_INOTIFY_BUFSIZE];
2165 struct inotify_event *ev = (struct inotify_event *)buf;
2166 int ofs;
2167 int len = read (fs_fd, buf, sizeof (buf));
1683 2168
2169 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2170 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2171}
2172
2173void inline_size
2174infy_init (EV_P)
2175{
2176 if (fs_fd != -2)
2177 return;
2178
2179 fs_fd = inotify_init ();
2180
2181 if (fs_fd >= 0)
2182 {
2183 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2184 ev_set_priority (&fs_w, EV_MAXPRI);
2185 ev_io_start (EV_A_ &fs_w);
2186 }
2187}
2188
2189void inline_size
2190infy_fork (EV_P)
2191{
2192 int slot;
2193
2194 if (fs_fd < 0)
2195 return;
2196
2197 close (fs_fd);
2198 fs_fd = inotify_init ();
2199
2200 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2201 {
2202 WL w_ = fs_hash [slot].head;
2203 fs_hash [slot].head = 0;
2204
2205 while (w_)
2206 {
2207 ev_stat *w = (ev_stat *)w_;
2208 w_ = w_->next; /* lets us add this watcher */
2209
2210 w->wd = -1;
2211
2212 if (fs_fd >= 0)
2213 infy_add (EV_A_ w); /* re-add, no matter what */
2214 else
2215 ev_timer_start (EV_A_ &w->timer);
2216 }
2217
2218 }
2219}
2220
2221#endif
2222
2223void
2224ev_stat_stat (EV_P_ ev_stat *w)
2225{
2226 if (lstat (w->path, &w->attr) < 0)
2227 w->attr.st_nlink = 0;
2228 else if (!w->attr.st_nlink)
2229 w->attr.st_nlink = 1;
2230}
2231
2232static void noinline
2233stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2234{
2235 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2236
2237 /* we copy this here each the time so that */
2238 /* prev has the old value when the callback gets invoked */
2239 w->prev = w->attr;
2240 ev_stat_stat (EV_A_ w);
2241
2242 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2243 if (
2244 w->prev.st_dev != w->attr.st_dev
2245 || w->prev.st_ino != w->attr.st_ino
2246 || w->prev.st_mode != w->attr.st_mode
2247 || w->prev.st_nlink != w->attr.st_nlink
2248 || w->prev.st_uid != w->attr.st_uid
2249 || w->prev.st_gid != w->attr.st_gid
2250 || w->prev.st_rdev != w->attr.st_rdev
2251 || w->prev.st_size != w->attr.st_size
2252 || w->prev.st_atime != w->attr.st_atime
2253 || w->prev.st_mtime != w->attr.st_mtime
2254 || w->prev.st_ctime != w->attr.st_ctime
2255 ) {
2256 #if EV_USE_INOTIFY
2257 infy_del (EV_A_ w);
2258 infy_add (EV_A_ w);
2259 ev_stat_stat (EV_A_ w); /* avoid race... */
2260 #endif
2261
1684 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2262 ev_feed_event (EV_A_ w, EV_STAT);
1685 ev_loop (w->loop, EVLOOP_NONBLOCK); 2263 }
1686} 2264}
1687 2265
1688void 2266void
1689ev_embed_start (EV_P_ struct ev_embed *w) 2267ev_stat_start (EV_P_ ev_stat *w)
1690{ 2268{
1691 if (expect_false (ev_is_active (w))) 2269 if (expect_false (ev_is_active (w)))
1692 return; 2270 return;
1693 2271
2272 /* since we use memcmp, we need to clear any padding data etc. */
2273 memset (&w->prev, 0, sizeof (ev_statdata));
2274 memset (&w->attr, 0, sizeof (ev_statdata));
2275
2276 ev_stat_stat (EV_A_ w);
2277
2278 if (w->interval < MIN_STAT_INTERVAL)
2279 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2280
2281 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2282 ev_set_priority (&w->timer, ev_priority (w));
2283
2284#if EV_USE_INOTIFY
2285 infy_init (EV_A);
2286
2287 if (fs_fd >= 0)
2288 infy_add (EV_A_ w);
2289 else
2290#endif
2291 ev_timer_start (EV_A_ &w->timer);
2292
2293 ev_start (EV_A_ (W)w, 1);
2294}
2295
2296void
2297ev_stat_stop (EV_P_ ev_stat *w)
2298{
2299 clear_pending (EV_A_ (W)w);
2300 if (expect_false (!ev_is_active (w)))
2301 return;
2302
2303#if EV_USE_INOTIFY
2304 infy_del (EV_A_ w);
2305#endif
2306 ev_timer_stop (EV_A_ &w->timer);
2307
2308 ev_stop (EV_A_ (W)w);
2309}
2310#endif
2311
2312#if EV_IDLE_ENABLE
2313void
2314ev_idle_start (EV_P_ ev_idle *w)
2315{
2316 if (expect_false (ev_is_active (w)))
2317 return;
2318
2319 pri_adjust (EV_A_ (W)w);
2320
1694 { 2321 {
2322 int active = ++idlecnt [ABSPRI (w)];
2323
2324 ++idleall;
2325 ev_start (EV_A_ (W)w, active);
2326
2327 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2328 idles [ABSPRI (w)][active - 1] = w;
2329 }
2330}
2331
2332void
2333ev_idle_stop (EV_P_ ev_idle *w)
2334{
2335 clear_pending (EV_A_ (W)w);
2336 if (expect_false (!ev_is_active (w)))
2337 return;
2338
2339 {
2340 int active = ((W)w)->active;
2341
2342 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2343 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2344
2345 ev_stop (EV_A_ (W)w);
2346 --idleall;
2347 }
2348}
2349#endif
2350
2351void
2352ev_prepare_start (EV_P_ ev_prepare *w)
2353{
2354 if (expect_false (ev_is_active (w)))
2355 return;
2356
2357 ev_start (EV_A_ (W)w, ++preparecnt);
2358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2359 prepares [preparecnt - 1] = w;
2360}
2361
2362void
2363ev_prepare_stop (EV_P_ ev_prepare *w)
2364{
2365 clear_pending (EV_A_ (W)w);
2366 if (expect_false (!ev_is_active (w)))
2367 return;
2368
2369 {
2370 int active = ((W)w)->active;
2371 prepares [active - 1] = prepares [--preparecnt];
2372 ((W)prepares [active - 1])->active = active;
2373 }
2374
2375 ev_stop (EV_A_ (W)w);
2376}
2377
2378void
2379ev_check_start (EV_P_ ev_check *w)
2380{
2381 if (expect_false (ev_is_active (w)))
2382 return;
2383
2384 ev_start (EV_A_ (W)w, ++checkcnt);
2385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2386 checks [checkcnt - 1] = w;
2387}
2388
2389void
2390ev_check_stop (EV_P_ ev_check *w)
2391{
2392 clear_pending (EV_A_ (W)w);
2393 if (expect_false (!ev_is_active (w)))
2394 return;
2395
2396 {
2397 int active = ((W)w)->active;
2398 checks [active - 1] = checks [--checkcnt];
2399 ((W)checks [active - 1])->active = active;
2400 }
2401
2402 ev_stop (EV_A_ (W)w);
2403}
2404
2405#if EV_EMBED_ENABLE
2406void noinline
2407ev_embed_sweep (EV_P_ ev_embed *w)
2408{
2409 ev_loop (w->other, EVLOOP_NONBLOCK);
2410}
2411
2412static void
2413embed_io_cb (EV_P_ ev_io *io, int revents)
2414{
2415 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2416
2417 if (ev_cb (w))
2418 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2419 else
2420 ev_loop (w->other, EVLOOP_NONBLOCK);
2421}
2422
2423static void
2424embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2425{
2426 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2427
2428 {
1695 struct ev_loop *loop = w->loop; 2429 struct ev_loop *loop = w->other;
2430
2431 while (fdchangecnt)
2432 {
2433 fd_reify (EV_A);
2434 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2435 }
2436 }
2437}
2438
2439#if 0
2440static void
2441embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2442{
2443 ev_idle_stop (EV_A_ idle);
2444}
2445#endif
2446
2447void
2448ev_embed_start (EV_P_ ev_embed *w)
2449{
2450 if (expect_false (ev_is_active (w)))
2451 return;
2452
2453 {
2454 struct ev_loop *loop = w->other;
1696 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2455 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1697 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2456 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1698 } 2457 }
1699 2458
2459 ev_set_priority (&w->io, ev_priority (w));
1700 ev_io_start (EV_A_ &w->io); 2460 ev_io_start (EV_A_ &w->io);
2461
2462 ev_prepare_init (&w->prepare, embed_prepare_cb);
2463 ev_set_priority (&w->prepare, EV_MINPRI);
2464 ev_prepare_start (EV_A_ &w->prepare);
2465
2466 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2467
1701 ev_start (EV_A_ (W)w, 1); 2468 ev_start (EV_A_ (W)w, 1);
1702} 2469}
1703 2470
1704void 2471void
1705ev_embed_stop (EV_P_ struct ev_embed *w) 2472ev_embed_stop (EV_P_ ev_embed *w)
1706{ 2473{
1707 ev_clear_pending (EV_A_ (W)w); 2474 clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w))) 2475 if (expect_false (!ev_is_active (w)))
1709 return; 2476 return;
1710 2477
1711 ev_io_stop (EV_A_ &w->io); 2478 ev_io_stop (EV_A_ &w->io);
2479 ev_prepare_stop (EV_A_ &w->prepare);
2480
1712 ev_stop (EV_A_ (W)w); 2481 ev_stop (EV_A_ (W)w);
1713} 2482}
1714#endif 2483#endif
1715 2484
2485#if EV_FORK_ENABLE
2486void
2487ev_fork_start (EV_P_ ev_fork *w)
2488{
2489 if (expect_false (ev_is_active (w)))
2490 return;
2491
2492 ev_start (EV_A_ (W)w, ++forkcnt);
2493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2494 forks [forkcnt - 1] = w;
2495}
2496
2497void
2498ev_fork_stop (EV_P_ ev_fork *w)
2499{
2500 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w)))
2502 return;
2503
2504 {
2505 int active = ((W)w)->active;
2506 forks [active - 1] = forks [--forkcnt];
2507 ((W)forks [active - 1])->active = active;
2508 }
2509
2510 ev_stop (EV_A_ (W)w);
2511}
2512#endif
2513
2514#if EV_ASYNC_ENABLE
2515void
2516ev_async_start (EV_P_ ev_async *w)
2517{
2518 if (expect_false (ev_is_active (w)))
2519 return;
2520
2521 evpipe_init (EV_A);
2522
2523 ev_start (EV_A_ (W)w, ++asynccnt);
2524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2525 asyncs [asynccnt - 1] = w;
2526}
2527
2528void
2529ev_async_stop (EV_P_ ev_async *w)
2530{
2531 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w)))
2533 return;
2534
2535 {
2536 int active = ((W)w)->active;
2537 asyncs [active - 1] = asyncs [--asynccnt];
2538 ((W)asyncs [active - 1])->active = active;
2539 }
2540
2541 ev_stop (EV_A_ (W)w);
2542}
2543
2544void
2545ev_async_send (EV_P_ ev_async *w)
2546{
2547 w->sent = 1;
2548 evpipe_write (EV_A_ &gotasync);
2549}
2550#endif
2551
1716/*****************************************************************************/ 2552/*****************************************************************************/
1717 2553
1718struct ev_once 2554struct ev_once
1719{ 2555{
1720 struct ev_io io; 2556 ev_io io;
1721 struct ev_timer to; 2557 ev_timer to;
1722 void (*cb)(int revents, void *arg); 2558 void (*cb)(int revents, void *arg);
1723 void *arg; 2559 void *arg;
1724}; 2560};
1725 2561
1726static void 2562static void
… …
1735 2571
1736 cb (revents, arg); 2572 cb (revents, arg);
1737} 2573}
1738 2574
1739static void 2575static void
1740once_cb_io (EV_P_ struct ev_io *w, int revents) 2576once_cb_io (EV_P_ ev_io *w, int revents)
1741{ 2577{
1742 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2578 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1743} 2579}
1744 2580
1745static void 2581static void
1746once_cb_to (EV_P_ struct ev_timer *w, int revents) 2582once_cb_to (EV_P_ ev_timer *w, int revents)
1747{ 2583{
1748 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1749} 2585}
1750 2586
1751void 2587void
… …
1775 ev_timer_set (&once->to, timeout, 0.); 2611 ev_timer_set (&once->to, timeout, 0.);
1776 ev_timer_start (EV_A_ &once->to); 2612 ev_timer_start (EV_A_ &once->to);
1777 } 2613 }
1778} 2614}
1779 2615
2616#if EV_MULTIPLICITY
2617 #include "ev_wrap.h"
2618#endif
2619
1780#ifdef __cplusplus 2620#ifdef __cplusplus
1781} 2621}
1782#endif 2622#endif
1783 2623

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