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Comparing libev/ev.c (file contents):
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC vs.
Revision 1.219 by root, Wed Apr 2 10:55:39 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
36#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
37# include "config.h" 48# include "config.h"
49# endif
38 50
39# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 52# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
42# endif 54# endif
… …
50# ifndef EV_USE_REALTIME 62# ifndef EV_USE_REALTIME
51# define EV_USE_REALTIME 0 63# define EV_USE_REALTIME 0
52# endif 64# endif
53# endif 65# endif
54 66
55# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
56# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
57# else 70# else
58# define EV_USE_SELECT 0 71# define EV_USE_NANOSLEEP 0
72# endif
59# endif 73# endif
60 74
61# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
62# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
63# else 78# else
64# define EV_USE_POLL 0 79# define EV_USE_SELECT 0
80# endif
65# endif 81# endif
66 82
67# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
68# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
69# else 86# else
70# define EV_USE_EPOLL 0 87# define EV_USE_POLL 0
88# endif
71# endif 89# endif
72 90
73# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
74# define EV_USE_KQUEUE 1 93# define EV_USE_EPOLL 1
75# else 94# else
76# define EV_USE_KQUEUE 0 95# define EV_USE_EPOLL 0
96# endif
77# endif 97# endif
78 98
79# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 99# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif
105# endif
106
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE
80# define EV_USE_PORT 1 109# define EV_USE_PORT 1
81# else 110# else
82# define EV_USE_PORT 0 111# define EV_USE_PORT 0
112# endif
113# endif
114
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1
118# else
119# define EV_USE_INOTIFY 0
120# endif
83# endif 121# endif
84 122
85#endif 123#endif
86 124
87#include <math.h> 125#include <math.h>
… …
96#include <sys/types.h> 134#include <sys/types.h>
97#include <time.h> 135#include <time.h>
98 136
99#include <signal.h> 137#include <signal.h>
100 138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
101#ifndef _WIN32 145#ifndef _WIN32
102# include <unistd.h>
103# include <sys/time.h> 146# include <sys/time.h>
104# include <sys/wait.h> 147# include <sys/wait.h>
148# include <unistd.h>
105#else 149#else
106# define WIN32_LEAN_AND_MEAN 150# define WIN32_LEAN_AND_MEAN
107# include <windows.h> 151# include <windows.h>
108# ifndef EV_SELECT_IS_WINSOCKET 152# ifndef EV_SELECT_IS_WINSOCKET
109# define EV_SELECT_IS_WINSOCKET 1 153# define EV_SELECT_IS_WINSOCKET 1
… …
118 162
119#ifndef EV_USE_REALTIME 163#ifndef EV_USE_REALTIME
120# define EV_USE_REALTIME 0 164# define EV_USE_REALTIME 0
121#endif 165#endif
122 166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
123#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
124# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
125#endif 173#endif
126 174
127#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
… …
142 190
143#ifndef EV_USE_PORT 191#ifndef EV_USE_PORT
144# define EV_USE_PORT 0 192# define EV_USE_PORT 0
145#endif 193#endif
146 194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
213#endif
214
147/**/ 215/**/
148
149/* darwin simply cannot be helped */
150#ifdef __APPLE__
151# undef EV_USE_POLL
152# undef EV_USE_KQUEUE
153#endif
154 216
155#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
156# undef EV_USE_MONOTONIC 218# undef EV_USE_MONOTONIC
157# define EV_USE_MONOTONIC 0 219# define EV_USE_MONOTONIC 0
158#endif 220#endif
… …
160#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
161# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
162# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
163#endif 225#endif
164 226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
165#if EV_SELECT_IS_WINSOCKET 242#if EV_SELECT_IS_WINSOCKET
166# include <winsock.h> 243# include <winsock.h>
167#endif 244#endif
168 245
169/**/ 246/**/
170 247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
171#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
172#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
173#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
174/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
175 261
176#ifdef EV_H
177# include EV_H
178#else
179# include "ev.h"
180#endif
181
182#if __GNUC__ >= 3 262#if __GNUC__ >= 4
183# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
184# define inline static inline 264# define noinline __attribute__ ((noinline))
185#else 265#else
186# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
187# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
188#endif 271#endif
189 272
190#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
191#define expect_true(expr) expect ((expr) != 0, 1) 274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
276
277#if EV_MINIMAL
278# define inline_speed static noinline
279#else
280# define inline_speed static inline
281#endif
192 282
193#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
194#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
195 285
196#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
197#define EMPTY2(a,b) /* used to suppress some warnings */ 287#define EMPTY2(a,b) /* used to suppress some warnings */
198 288
199typedef struct ev_watcher *W; 289typedef ev_watcher *W;
200typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
201typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
202 292
293#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
203static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
204 298
205#ifdef _WIN32 299#ifdef _WIN32
206# include "ev_win32.c" 300# include "ev_win32.c"
207#endif 301#endif
208 302
209/*****************************************************************************/ 303/*****************************************************************************/
210 304
211static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
212 306
307void
213void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
214{ 309{
215 syserr_cb = cb; 310 syserr_cb = cb;
216} 311}
217 312
218static void 313static void noinline
219syserr (const char *msg) 314syserr (const char *msg)
220{ 315{
221 if (!msg) 316 if (!msg)
222 msg = "(libev) system error"; 317 msg = "(libev) system error";
223 318
… …
230 } 325 }
231} 326}
232 327
233static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
234 329
330void
235void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
236{ 332{
237 alloc = cb; 333 alloc = cb;
238} 334}
239 335
240static void * 336inline_speed void *
241ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
242{ 338{
243 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
244 340
245 if (!ptr && size) 341 if (!ptr && size)
… …
269typedef struct 365typedef struct
270{ 366{
271 W w; 367 W w;
272 int events; 368 int events;
273} ANPENDING; 369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
274 377
275#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
276 379
277 struct ev_loop 380 struct ev_loop
278 { 381 {
… …
312 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
313 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
314#endif 417#endif
315} 418}
316 419
317inline ev_tstamp 420ev_tstamp inline_size
318get_clock (void) 421get_clock (void)
319{ 422{
320#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
321 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
322 { 425 {
… …
335{ 438{
336 return ev_rt_now; 439 return ev_rt_now;
337} 440}
338#endif 441#endif
339 442
340#define array_roundsize(type,n) (((n) | 4) & ~3) 443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
447 {
448#if EV_USE_NANOSLEEP
449 struct timespec ts;
450
451 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0);
455#elif defined(_WIN32)
456 Sleep ((unsigned long)(delay * 1e3));
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
467
468/*****************************************************************************/
469
470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
341 497
342#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
343 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
344 { \ 500 { \
345 int newcnt = cur; \ 501 int ocur_ = (cur); \
346 do \ 502 (base) = (type *)array_realloc \
347 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
348 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
349 } \
350 while ((cnt) > newcnt); \
351 \
352 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
353 init (base + cur, newcnt - cur); \
354 cur = newcnt; \
355 } 505 }
356 506
507#if 0
357#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
358 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
359 { \ 510 { \
360 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
361 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
362 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
363 } 514 }
515#endif
364 516
365#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
366 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
367 519
368/*****************************************************************************/ 520/*****************************************************************************/
369 521
370static void 522void noinline
523ev_feed_event (EV_P_ void *w, int revents)
524{
525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
527
528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
531 {
532 w_->pending = ++pendingcnt [pri];
533 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents;
536 }
537}
538
539void inline_speed
540queue_events (EV_P_ W *events, int eventcnt, int type)
541{
542 int i;
543
544 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type);
546}
547
548/*****************************************************************************/
549
550void inline_size
371anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
372{ 552{
373 while (count--) 553 while (count--)
374 { 554 {
375 base->head = 0; 555 base->head = 0;
… …
378 558
379 ++base; 559 ++base;
380 } 560 }
381} 561}
382 562
383void 563void inline_speed
384ev_feed_event (EV_P_ void *w, int revents)
385{
386 W w_ = (W)w;
387
388 if (expect_false (w_->pending))
389 {
390 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
391 return;
392 }
393
394 w_->pending = ++pendingcnt [ABSPRI (w_)];
395 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
396 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
397 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
398}
399
400static void
401queue_events (EV_P_ W *events, int eventcnt, int type)
402{
403 int i;
404
405 for (i = 0; i < eventcnt; ++i)
406 ev_feed_event (EV_A_ events [i], type);
407}
408
409inline void
410fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
411{ 565{
412 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
413 struct ev_io *w; 567 ev_io *w;
414 568
415 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
416 { 570 {
417 int ev = w->events & revents; 571 int ev = w->events & revents;
418 572
419 if (ev) 573 if (ev)
420 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
422} 576}
423 577
424void 578void
425ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
426{ 580{
581 if (fd >= 0 && fd < anfdmax)
427 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
428} 583}
429 584
430/*****************************************************************************/ 585void inline_size
431
432inline void
433fd_reify (EV_P) 586fd_reify (EV_P)
434{ 587{
435 int i; 588 int i;
436 589
437 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
438 { 591 {
439 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
440 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
441 struct ev_io *w; 594 ev_io *w;
442 595
443 int events = 0; 596 unsigned char events = 0;
444 597
445 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
446 events |= w->events; 599 events |= (unsigned char)w->events;
447 600
448#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
449 if (events) 602 if (events)
450 { 603 {
451 unsigned long argp; 604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
452 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
453 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
454 } 611 }
455#endif 612#endif
456 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
457 anfd->reify = 0; 618 anfd->reify = 0;
458
459 method_modify (EV_A_ fd, anfd->events, events);
460 anfd->events = events; 619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
461 } 624 }
462 625
463 fdchangecnt = 0; 626 fdchangecnt = 0;
464} 627}
465 628
466static void 629void inline_size
467fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
468{ 631{
469 if (expect_false (anfds [fd].reify)) 632 unsigned char reify = anfds [fd].reify;
470 return;
471
472 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
473 634
635 if (expect_true (!reify))
636 {
474 ++fdchangecnt; 637 ++fdchangecnt;
475 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
476 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
477} 641}
478 642
479static void 643void inline_speed
480fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
481{ 645{
482 struct ev_io *w; 646 ev_io *w;
483 647
484 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
485 { 649 {
486 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
487 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
488 } 652 }
489} 653}
490 654
491inline int 655int inline_size
492fd_valid (int fd) 656fd_valid (int fd)
493{ 657{
494#ifdef _WIN32 658#ifdef _WIN32
495 return _get_osfhandle (fd) != -1; 659 return _get_osfhandle (fd) != -1;
496#else 660#else
497 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
498#endif 662#endif
499} 663}
500 664
501/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
502static void 666static void noinline
503fd_ebadf (EV_P) 667fd_ebadf (EV_P)
504{ 668{
505 int fd; 669 int fd;
506 670
507 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
509 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
510 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
511} 675}
512 676
513/* called on ENOMEM in select/poll to kill some fds and retry */ 677/* called on ENOMEM in select/poll to kill some fds and retry */
514static void 678static void noinline
515fd_enomem (EV_P) 679fd_enomem (EV_P)
516{ 680{
517 int fd; 681 int fd;
518 682
519 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
522 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
523 return; 687 return;
524 } 688 }
525} 689}
526 690
527/* usually called after fork if method needs to re-arm all fds from scratch */ 691/* usually called after fork if backend needs to re-arm all fds from scratch */
528static void 692static void noinline
529fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
530{ 694{
531 int fd; 695 int fd;
532 696
533 /* this should be highly optimised to not do anything but set a flag */
534 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
535 if (anfds [fd].events) 698 if (anfds [fd].events)
536 { 699 {
537 anfds [fd].events = 0; 700 anfds [fd].events = 0;
538 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
539 } 702 }
540} 703}
541 704
542/*****************************************************************************/ 705/*****************************************************************************/
543 706
544static void 707void inline_speed
545upheap (WT *heap, int k) 708upheap (WT *heap, int k)
546{ 709{
547 WT w = heap [k]; 710 WT w = heap [k];
548 711
549 while (k && heap [k >> 1]->at > w->at) 712 while (k)
550 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
551 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
552 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
553 k >>= 1; 721 k = p;
554 } 722 }
555 723
556 heap [k] = w; 724 heap [k] = w;
557 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
558
559} 726}
560 727
561static void 728void inline_speed
562downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
563{ 730{
564 WT w = heap [k]; 731 WT w = heap [k];
565 732
566 while (k < (N >> 1)) 733 for (;;)
567 { 734 {
568 int j = k << 1; 735 int c = (k << 1) + 1;
569 736
570 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
571 ++j;
572
573 if (w->at <= heap [j]->at)
574 break; 738 break;
575 739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
576 heap [k] = heap [j]; 746 heap [k] = heap [c];
577 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
578 k = j; 749 k = c;
579 } 750 }
580 751
581 heap [k] = w; 752 heap [k] = w;
582 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
583} 754}
584 755
585inline void 756void inline_size
586adjustheap (WT *heap, int N, int k) 757adjustheap (WT *heap, int N, int k)
587{ 758{
588 upheap (heap, k); 759 upheap (heap, k);
589 downheap (heap, N, k); 760 downheap (heap, N, k);
590} 761}
… …
592/*****************************************************************************/ 763/*****************************************************************************/
593 764
594typedef struct 765typedef struct
595{ 766{
596 WL head; 767 WL head;
597 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
598} ANSIG; 769} ANSIG;
599 770
600static ANSIG *signals; 771static ANSIG *signals;
601static int signalmax; 772static int signalmax;
602 773
603static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
604static sig_atomic_t volatile gotsig;
605static struct ev_io sigev;
606 775
607static void 776void inline_size
608signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
609{ 778{
610 while (count--) 779 while (count--)
611 { 780 {
612 base->head = 0; 781 base->head = 0;
… …
614 783
615 ++base; 784 ++base;
616 } 785 }
617} 786}
618 787
619static void 788/*****************************************************************************/
620sighandler (int signum)
621{
622#if _WIN32
623 signal (signum, sighandler);
624#endif
625 789
626 signals [signum - 1].gotsig = 1; 790void inline_speed
627
628 if (!gotsig)
629 {
630 int old_errno = errno;
631 gotsig = 1;
632 write (sigpipe [1], &signum, 1);
633 errno = old_errno;
634 }
635}
636
637void
638ev_feed_signal_event (EV_P_ int signum)
639{
640 WL w;
641
642#if EV_MULTIPLICITY
643 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
644#endif
645
646 --signum;
647
648 if (signum < 0 || signum >= signalmax)
649 return;
650
651 signals [signum].gotsig = 0;
652
653 for (w = signals [signum].head; w; w = w->next)
654 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
655}
656
657static void
658sigcb (EV_P_ struct ev_io *iow, int revents)
659{
660 int signum;
661
662 read (sigpipe [0], &revents, 1);
663 gotsig = 0;
664
665 for (signum = signalmax; signum--; )
666 if (signals [signum].gotsig)
667 ev_feed_signal_event (EV_A_ signum + 1);
668}
669
670static void
671fd_intern (int fd) 791fd_intern (int fd)
672{ 792{
673#ifdef _WIN32 793#ifdef _WIN32
674 int arg = 1; 794 int arg = 1;
675 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
677 fcntl (fd, F_SETFD, FD_CLOEXEC); 797 fcntl (fd, F_SETFD, FD_CLOEXEC);
678 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
679#endif 799#endif
680} 800}
681 801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{
822 if (!*flag)
823 {
824 int old_errno = errno; /* save errno because write might clobber it */
825
826 *flag = 1;
827 write (evpipe [1], &old_errno, 1);
828
829 errno = old_errno;
830 }
831}
832
682static void 833static void
683siginit (EV_P) 834pipecb (EV_P_ ev_io *iow, int revents)
684{ 835{
685 fd_intern (sigpipe [0]); 836 {
686 fd_intern (sigpipe [1]); 837 int dummy;
838 read (evpipe [0], &dummy, 1);
839 }
687 840
688 ev_io_set (&sigev, sigpipe [0], EV_READ); 841 if (gotsig && ev_is_default_loop (EV_A))
689 ev_io_start (EV_A_ &sigev); 842 {
690 ev_unref (EV_A); /* child watcher should not keep loop alive */ 843 int signum;
844 gotsig = 0;
845
846 for (signum = signalmax; signum--; )
847 if (signals [signum].gotsig)
848 ev_feed_signal_event (EV_A_ signum + 1);
849 }
850
851#if EV_ASYNC_ENABLE
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864#endif
691} 865}
692 866
693/*****************************************************************************/ 867/*****************************************************************************/
694 868
695static struct ev_child *childs [PID_HASHSIZE]; 869static void
870ev_sighandler (int signum)
871{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32
877 signal (signum, ev_sighandler);
878#endif
879
880 signals [signum - 1].gotsig = 1;
881 evpipe_write (EV_A_ &gotsig);
882}
883
884void noinline
885ev_feed_signal_event (EV_P_ int signum)
886{
887 WL w;
888
889#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
892
893 --signum;
894
895 if (signum < 0 || signum >= signalmax)
896 return;
897
898 signals [signum].gotsig = 0;
899
900 for (w = signals [signum].head; w; w = w->next)
901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902}
903
904/*****************************************************************************/
905
906static WL childs [EV_PID_HASHSIZE];
696 907
697#ifndef _WIN32 908#ifndef _WIN32
698 909
699static struct ev_signal childev; 910static ev_signal childev;
911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
916void inline_speed
917child_reap (EV_P_ int chain, int pid, int status)
918{
919 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921
922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
923 {
924 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1)))
926 {
927 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
928 w->rpid = pid;
929 w->rstatus = status;
930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
931 }
932 }
933}
700 934
701#ifndef WCONTINUED 935#ifndef WCONTINUED
702# define WCONTINUED 0 936# define WCONTINUED 0
703#endif 937#endif
704 938
705static void 939static void
706child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
707{
708 struct ev_child *w;
709
710 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
711 if (w->pid == pid || !w->pid)
712 {
713 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
714 w->rpid = pid;
715 w->rstatus = status;
716 ev_feed_event (EV_A_ (W)w, EV_CHILD);
717 }
718}
719
720static void
721childcb (EV_P_ struct ev_signal *sw, int revents) 940childcb (EV_P_ ev_signal *sw, int revents)
722{ 941{
723 int pid, status; 942 int pid, status;
724 943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
725 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
726 { 946 if (!WCONTINUED
947 || errno != EINVAL
948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
949 return;
950
727 /* make sure we are called again until all childs have been reaped */ 951 /* make sure we are called again until all children have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */
728 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
729 954
730 child_reap (EV_A_ sw, pid, pid, status); 955 child_reap (EV_A_ pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
731 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
732 }
733} 958}
734 959
735#endif 960#endif
736 961
737/*****************************************************************************/ 962/*****************************************************************************/
… …
763{ 988{
764 return EV_VERSION_MINOR; 989 return EV_VERSION_MINOR;
765} 990}
766 991
767/* return true if we are running with elevated privileges and should ignore env variables */ 992/* return true if we are running with elevated privileges and should ignore env variables */
768static int 993int inline_size
769enable_secure (void) 994enable_secure (void)
770{ 995{
771#ifdef _WIN32 996#ifdef _WIN32
772 return 0; 997 return 0;
773#else 998#else
… …
775 || getgid () != getegid (); 1000 || getgid () != getegid ();
776#endif 1001#endif
777} 1002}
778 1003
779unsigned int 1004unsigned int
780ev_method (EV_P) 1005ev_supported_backends (void)
781{ 1006{
782 return method; 1007 unsigned int flags = 0;
783}
784 1008
785static void 1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1010 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1011 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1012 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1013 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014
1015 return flags;
1016}
1017
1018unsigned int
1019ev_recommended_backends (void)
1020{
1021 unsigned int flags = ev_supported_backends ();
1022
1023#ifndef __NetBSD__
1024 /* kqueue is borked on everything but netbsd apparently */
1025 /* it usually doesn't work correctly on anything but sockets and pipes */
1026 flags &= ~EVBACKEND_KQUEUE;
1027#endif
1028#ifdef __APPLE__
1029 // flags &= ~EVBACKEND_KQUEUE; for documentation
1030 flags &= ~EVBACKEND_POLL;
1031#endif
1032
1033 return flags;
1034}
1035
1036unsigned int
1037ev_embeddable_backends (void)
1038{
1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040
1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */
1043 flags &= ~EVBACKEND_EPOLL;
1044
1045 return flags;
1046}
1047
1048unsigned int
1049ev_backend (EV_P)
1050{
1051 return backend;
1052}
1053
1054unsigned int
1055ev_loop_count (EV_P)
1056{
1057 return loop_count;
1058}
1059
1060void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{
1063 io_blocktime = interval;
1064}
1065
1066void
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{
1069 timeout_blocktime = interval;
1070}
1071
1072static void noinline
786loop_init (EV_P_ unsigned int flags) 1073loop_init (EV_P_ unsigned int flags)
787{ 1074{
788 if (!method) 1075 if (!backend)
789 { 1076 {
790#if EV_USE_MONOTONIC 1077#if EV_USE_MONOTONIC
791 { 1078 {
792 struct timespec ts; 1079 struct timespec ts;
793 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
794 have_monotonic = 1; 1081 have_monotonic = 1;
795 } 1082 }
796#endif 1083#endif
797 1084
798 ev_rt_now = ev_time (); 1085 ev_rt_now = ev_time ();
799 mn_now = get_clock (); 1086 mn_now = get_clock ();
800 now_floor = mn_now; 1087 now_floor = mn_now;
801 rtmn_diff = ev_rt_now - mn_now; 1088 rtmn_diff = ev_rt_now - mn_now;
802 1089
803 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1090 io_blocktime = 0.;
1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif
1098
1099 /* pid check not overridable via env */
1100#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK)
1102 curpid = getpid ();
1103#endif
1104
1105 if (!(flags & EVFLAG_NOENV)
1106 && !enable_secure ()
1107 && getenv ("LIBEV_FLAGS"))
804 flags = atoi (getenv ("LIBEV_FLAGS")); 1108 flags = atoi (getenv ("LIBEV_FLAGS"));
805 1109
806 if (!(flags & 0x0000ffff)) 1110 if (!(flags & 0x0000ffffUL))
807 flags |= 0x0000ffff; 1111 flags |= ev_recommended_backends ();
808 1112
809 method = 0;
810#if EV_USE_PORT 1113#if EV_USE_PORT
811 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
812#endif 1115#endif
813#if EV_USE_KQUEUE 1116#if EV_USE_KQUEUE
814 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
815#endif 1118#endif
816#if EV_USE_EPOLL 1119#if EV_USE_EPOLL
817 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
818#endif 1121#endif
819#if EV_USE_POLL 1122#if EV_USE_POLL
820 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
821#endif 1124#endif
822#if EV_USE_SELECT 1125#if EV_USE_SELECT
823 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
824#endif 1127#endif
825 1128
826 ev_init (&sigev, sigcb); 1129 ev_init (&pipeev, pipecb);
827 ev_set_priority (&sigev, EV_MAXPRI); 1130 ev_set_priority (&pipeev, EV_MAXPRI);
828 } 1131 }
829} 1132}
830 1133
831static void 1134static void noinline
832loop_destroy (EV_P) 1135loop_destroy (EV_P)
833{ 1136{
834 int i; 1137 int i;
835 1138
1139 if (ev_is_active (&pipeev))
1140 {
1141 ev_ref (EV_A); /* signal watcher */
1142 ev_io_stop (EV_A_ &pipeev);
1143
1144 close (evpipe [0]); evpipe [0] = 0;
1145 close (evpipe [1]); evpipe [1] = 0;
1146 }
1147
1148#if EV_USE_INOTIFY
1149 if (fs_fd >= 0)
1150 close (fs_fd);
1151#endif
1152
1153 if (backend_fd >= 0)
1154 close (backend_fd);
1155
836#if EV_USE_PORT 1156#if EV_USE_PORT
837 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1157 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
838#endif 1158#endif
839#if EV_USE_KQUEUE 1159#if EV_USE_KQUEUE
840 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
841#endif 1161#endif
842#if EV_USE_EPOLL 1162#if EV_USE_EPOLL
843 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1163 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
844#endif 1164#endif
845#if EV_USE_POLL 1165#if EV_USE_POLL
846 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1166 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
847#endif 1167#endif
848#if EV_USE_SELECT 1168#if EV_USE_SELECT
849 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
850#endif 1170#endif
851 1171
852 for (i = NUMPRI; i--; ) 1172 for (i = NUMPRI; i--; )
1173 {
853 array_free (pending, [i]); 1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
1179
1180 ev_free (anfds); anfdmax = 0;
854 1181
855 /* have to use the microsoft-never-gets-it-right macro */ 1182 /* have to use the microsoft-never-gets-it-right macro */
856 array_free (fdchange, EMPTY0); 1183 array_free (fdchange, EMPTY);
857 array_free (timer, EMPTY0); 1184 array_free (timer, EMPTY);
858#if EV_PERIODICS 1185#if EV_PERIODIC_ENABLE
859 array_free (periodic, EMPTY0); 1186 array_free (periodic, EMPTY);
860#endif 1187#endif
1188#if EV_FORK_ENABLE
861 array_free (idle, EMPTY0); 1189 array_free (fork, EMPTY);
1190#endif
862 array_free (prepare, EMPTY0); 1191 array_free (prepare, EMPTY);
863 array_free (check, EMPTY0); 1192 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY);
1195#endif
864 1196
865 method = 0; 1197 backend = 0;
866} 1198}
867 1199
868static void 1200void inline_size infy_fork (EV_P);
1201
1202void inline_size
869loop_fork (EV_P) 1203loop_fork (EV_P)
870{ 1204{
871#if EV_USE_PORT 1205#if EV_USE_PORT
872 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1206 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
873#endif 1207#endif
874#if EV_USE_KQUEUE 1208#if EV_USE_KQUEUE
875 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1209 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
876#endif 1210#endif
877#if EV_USE_EPOLL 1211#if EV_USE_EPOLL
878 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
879#endif 1213#endif
1214#if EV_USE_INOTIFY
1215 infy_fork (EV_A);
1216#endif
880 1217
881 if (ev_is_active (&sigev)) 1218 if (ev_is_active (&pipeev))
882 { 1219 {
883 /* default loop */ 1220 /* this "locks" the handlers against writing to the pipe */
1221 /* while we modify the fd vars */
1222 gotsig = 1;
1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
884 1226
885 ev_ref (EV_A); 1227 ev_ref (EV_A);
886 ev_io_stop (EV_A_ &sigev); 1228 ev_io_stop (EV_A_ &pipeev);
887 close (sigpipe [0]); 1229 close (evpipe [0]);
888 close (sigpipe [1]); 1230 close (evpipe [1]);
889 1231
890 while (pipe (sigpipe))
891 syserr ("(libev) error creating pipe");
892
893 siginit (EV_A); 1232 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ);
894 } 1235 }
895 1236
896 postfork = 0; 1237 postfork = 0;
897} 1238}
898 1239
… …
904 1245
905 memset (loop, 0, sizeof (struct ev_loop)); 1246 memset (loop, 0, sizeof (struct ev_loop));
906 1247
907 loop_init (EV_A_ flags); 1248 loop_init (EV_A_ flags);
908 1249
909 if (ev_method (EV_A)) 1250 if (ev_backend (EV_A))
910 return loop; 1251 return loop;
911 1252
912 return 0; 1253 return 0;
913} 1254}
914 1255
… …
920} 1261}
921 1262
922void 1263void
923ev_loop_fork (EV_P) 1264ev_loop_fork (EV_P)
924{ 1265{
925 postfork = 1; 1266 postfork = 1; /* must be in line with ev_default_fork */
926} 1267}
927 1268
928#endif 1269#endif
929 1270
930#if EV_MULTIPLICITY 1271#if EV_MULTIPLICITY
… …
933#else 1274#else
934int 1275int
935ev_default_loop (unsigned int flags) 1276ev_default_loop (unsigned int flags)
936#endif 1277#endif
937{ 1278{
938 if (sigpipe [0] == sigpipe [1])
939 if (pipe (sigpipe))
940 return 0;
941
942 if (!ev_default_loop_ptr) 1279 if (!ev_default_loop_ptr)
943 { 1280 {
944#if EV_MULTIPLICITY 1281#if EV_MULTIPLICITY
945 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
946#else 1283#else
947 ev_default_loop_ptr = 1; 1284 ev_default_loop_ptr = 1;
948#endif 1285#endif
949 1286
950 loop_init (EV_A_ flags); 1287 loop_init (EV_A_ flags);
951 1288
952 if (ev_method (EV_A)) 1289 if (ev_backend (EV_A))
953 { 1290 {
954 siginit (EV_A);
955
956#ifndef _WIN32 1291#ifndef _WIN32
957 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
958 ev_set_priority (&childev, EV_MAXPRI); 1293 ev_set_priority (&childev, EV_MAXPRI);
959 ev_signal_start (EV_A_ &childev); 1294 ev_signal_start (EV_A_ &childev);
960 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
977#ifndef _WIN32 1312#ifndef _WIN32
978 ev_ref (EV_A); /* child watcher */ 1313 ev_ref (EV_A); /* child watcher */
979 ev_signal_stop (EV_A_ &childev); 1314 ev_signal_stop (EV_A_ &childev);
980#endif 1315#endif
981 1316
982 ev_ref (EV_A); /* signal watcher */
983 ev_io_stop (EV_A_ &sigev);
984
985 close (sigpipe [0]); sigpipe [0] = 0;
986 close (sigpipe [1]); sigpipe [1] = 0;
987
988 loop_destroy (EV_A); 1317 loop_destroy (EV_A);
989} 1318}
990 1319
991void 1320void
992ev_default_fork (void) 1321ev_default_fork (void)
993{ 1322{
994#if EV_MULTIPLICITY 1323#if EV_MULTIPLICITY
995 struct ev_loop *loop = ev_default_loop_ptr; 1324 struct ev_loop *loop = ev_default_loop_ptr;
996#endif 1325#endif
997 1326
998 if (method) 1327 if (backend)
999 postfork = 1; 1328 postfork = 1; /* must be in line with ev_loop_fork */
1000} 1329}
1001 1330
1002/*****************************************************************************/ 1331/*****************************************************************************/
1003 1332
1004static int 1333void
1005any_pending (EV_P) 1334ev_invoke (EV_P_ void *w, int revents)
1006{ 1335{
1007 int pri; 1336 EV_CB_INVOKE ((W)w, revents);
1008
1009 for (pri = NUMPRI; pri--; )
1010 if (pendingcnt [pri])
1011 return 1;
1012
1013 return 0;
1014} 1337}
1015 1338
1016inline void 1339void inline_speed
1017call_pending (EV_P) 1340call_pending (EV_P)
1018{ 1341{
1019 int pri; 1342 int pri;
1020 1343
1021 for (pri = NUMPRI; pri--; ) 1344 for (pri = NUMPRI; pri--; )
… …
1023 { 1346 {
1024 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1025 1348
1026 if (expect_true (p->w)) 1349 if (expect_true (p->w))
1027 { 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
1028 p->w->pending = 0; 1353 p->w->pending = 0;
1029 EV_CB_INVOKE (p->w, p->events); 1354 EV_CB_INVOKE (p->w, p->events);
1030 } 1355 }
1031 } 1356 }
1032} 1357}
1033 1358
1034inline void 1359void inline_size
1035timers_reify (EV_P) 1360timers_reify (EV_P)
1036{ 1361{
1037 while (timercnt && ((WT)timers [0])->at <= mn_now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
1038 { 1363 {
1039 struct ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
1040 1365
1041 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1042 1367
1043 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
1044 if (w->repeat) 1369 if (w->repeat)
1045 { 1370 {
1046 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1047 1372
1048 ((WT)w)->at += w->repeat; 1373 ((WT)w)->at += w->repeat;
1049 if (((WT)w)->at < mn_now) 1374 if (((WT)w)->at < mn_now)
1050 ((WT)w)->at = mn_now; 1375 ((WT)w)->at = mn_now;
1051 1376
1052 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
1053 } 1378 }
1054 else 1379 else
1055 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1056 1381
1057 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1058 } 1383 }
1059} 1384}
1060 1385
1061#if EV_PERIODICS 1386#if EV_PERIODIC_ENABLE
1062inline void 1387void inline_size
1063periodics_reify (EV_P) 1388periodics_reify (EV_P)
1064{ 1389{
1065 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1066 { 1391 {
1067 struct ev_periodic *w = periodics [0]; 1392 ev_periodic *w = (ev_periodic *)periodics [0];
1068 1393
1069 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1070 1395
1071 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
1072 if (w->reschedule_cb) 1397 if (w->reschedule_cb)
1073 { 1398 {
1074 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1075 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1076 downheap ((WT *)periodics, periodiccnt, 0); 1401 downheap (periodics, periodiccnt, 0);
1077 } 1402 }
1078 else if (w->interval) 1403 else if (w->interval)
1079 { 1404 {
1080 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1081 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1082 downheap ((WT *)periodics, periodiccnt, 0); 1408 downheap (periodics, periodiccnt, 0);
1083 } 1409 }
1084 else 1410 else
1085 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1086 1412
1087 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1088 } 1414 }
1089} 1415}
1090 1416
1091static void 1417static void noinline
1092periodics_reschedule (EV_P) 1418periodics_reschedule (EV_P)
1093{ 1419{
1094 int i; 1420 int i;
1095 1421
1096 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
1097 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
1098 { 1424 {
1099 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
1100 1426
1101 if (w->reschedule_cb) 1427 if (w->reschedule_cb)
1102 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1103 else if (w->interval) 1429 else if (w->interval)
1104 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1105 } 1431 }
1106 1432
1107 /* now rebuild the heap */ 1433 /* now rebuild the heap */
1108 for (i = periodiccnt >> 1; i--; ) 1434 for (i = periodiccnt >> 1; i--; )
1109 downheap ((WT *)periodics, periodiccnt, i); 1435 downheap (periodics, periodiccnt, i);
1110} 1436}
1111#endif 1437#endif
1112 1438
1113inline int 1439#if EV_IDLE_ENABLE
1114time_update_monotonic (EV_P) 1440void inline_size
1441idle_reify (EV_P)
1115{ 1442{
1443 if (expect_false (idleall))
1444 {
1445 int pri;
1446
1447 for (pri = NUMPRI; pri--; )
1448 {
1449 if (pendingcnt [pri])
1450 break;
1451
1452 if (idlecnt [pri])
1453 {
1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1455 break;
1456 }
1457 }
1458 }
1459}
1460#endif
1461
1462void inline_speed
1463time_update (EV_P_ ev_tstamp max_block)
1464{
1465 int i;
1466
1467#if EV_USE_MONOTONIC
1468 if (expect_true (have_monotonic))
1469 {
1470 ev_tstamp odiff = rtmn_diff;
1471
1116 mn_now = get_clock (); 1472 mn_now = get_clock ();
1117 1473
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1475 /* interpolate in the meantime */
1118 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1476 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1119 { 1477 {
1120 ev_rt_now = rtmn_diff + mn_now; 1478 ev_rt_now = rtmn_diff + mn_now;
1121 return 0; 1479 return;
1122 } 1480 }
1123 else 1481
1124 {
1125 now_floor = mn_now; 1482 now_floor = mn_now;
1126 ev_rt_now = ev_time (); 1483 ev_rt_now = ev_time ();
1127 return 1;
1128 }
1129}
1130 1484
1131inline void 1485 /* loop a few times, before making important decisions.
1132time_update (EV_P) 1486 * on the choice of "4": one iteration isn't enough,
1133{ 1487 * in case we get preempted during the calls to
1134 int i; 1488 * ev_time and get_clock. a second call is almost guaranteed
1135 1489 * to succeed in that case, though. and looping a few more times
1136#if EV_USE_MONOTONIC 1490 * doesn't hurt either as we only do this on time-jumps or
1137 if (expect_true (have_monotonic)) 1491 * in the unlikely event of having been preempted here.
1138 { 1492 */
1139 if (time_update_monotonic (EV_A)) 1493 for (i = 4; --i; )
1140 { 1494 {
1141 ev_tstamp odiff = rtmn_diff;
1142
1143 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1144 {
1145 rtmn_diff = ev_rt_now - mn_now; 1495 rtmn_diff = ev_rt_now - mn_now;
1146 1496
1147 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1148 return; /* all is well */ 1498 return; /* all is well */
1149 1499
1150 ev_rt_now = ev_time (); 1500 ev_rt_now = ev_time ();
1151 mn_now = get_clock (); 1501 mn_now = get_clock ();
1152 now_floor = mn_now; 1502 now_floor = mn_now;
1153 } 1503 }
1154 1504
1155# if EV_PERIODICS 1505# if EV_PERIODIC_ENABLE
1506 periodics_reschedule (EV_A);
1507# endif
1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1510 }
1511 else
1512#endif
1513 {
1514 ev_rt_now = ev_time ();
1515
1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1517 {
1518#if EV_PERIODIC_ENABLE
1156 periodics_reschedule (EV_A); 1519 periodics_reschedule (EV_A);
1157# endif 1520#endif
1158 /* no timer adjustment, as the monotonic clock doesn't jump */
1159 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1160 }
1161 }
1162 else
1163#endif
1164 {
1165 ev_rt_now = ev_time ();
1166
1167 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1168 {
1169#if EV_PERIODICS
1170 periodics_reschedule (EV_A);
1171#endif
1172
1173 /* adjust timers. this is easy, as the offset is the same for all */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
1174 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
1175 ((WT)timers [i])->at += ev_rt_now - mn_now; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
1176 } 1524 }
1177 1525
1178 mn_now = ev_rt_now; 1526 mn_now = ev_rt_now;
… …
1194static int loop_done; 1542static int loop_done;
1195 1543
1196void 1544void
1197ev_loop (EV_P_ int flags) 1545ev_loop (EV_P_ int flags)
1198{ 1546{
1199 double block; 1547 loop_done = EVUNLOOP_CANCEL;
1200 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1201 1548
1202 while (activecnt) 1549 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1550
1551 do
1203 { 1552 {
1553#ifndef _WIN32
1554 if (expect_false (curpid)) /* penalise the forking check even more */
1555 if (expect_false (getpid () != curpid))
1556 {
1557 curpid = getpid ();
1558 postfork = 1;
1559 }
1560#endif
1561
1562#if EV_FORK_ENABLE
1563 /* we might have forked, so queue fork handlers */
1564 if (expect_false (postfork))
1565 if (forkcnt)
1566 {
1567 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1568 call_pending (EV_A);
1569 }
1570#endif
1571
1204 /* queue check watchers (and execute them) */ 1572 /* queue prepare watchers (and execute them) */
1205 if (expect_false (preparecnt)) 1573 if (expect_false (preparecnt))
1206 { 1574 {
1207 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1575 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1208 call_pending (EV_A); 1576 call_pending (EV_A);
1209 } 1577 }
1210 1578
1579 if (expect_false (!activecnt))
1580 break;
1581
1211 /* we might have forked, so reify kernel state if necessary */ 1582 /* we might have forked, so reify kernel state if necessary */
1212 if (expect_false (postfork)) 1583 if (expect_false (postfork))
1213 loop_fork (EV_A); 1584 loop_fork (EV_A);
1214 1585
1215 /* update fd-related kernel structures */ 1586 /* update fd-related kernel structures */
1216 fd_reify (EV_A); 1587 fd_reify (EV_A);
1217 1588
1218 /* calculate blocking time */ 1589 /* calculate blocking time */
1590 {
1591 ev_tstamp waittime = 0.;
1592 ev_tstamp sleeptime = 0.;
1219 1593
1220 /* we only need this for !monotonic clock or timers, but as we basically 1594 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1221 always have timers, we just calculate it always */
1222#if EV_USE_MONOTONIC
1223 if (expect_true (have_monotonic))
1224 time_update_monotonic (EV_A);
1225 else
1226#endif
1227 { 1595 {
1228 ev_rt_now = ev_time (); 1596 /* update time to cancel out callback processing overhead */
1229 mn_now = ev_rt_now; 1597 time_update (EV_A_ 1e100);
1230 }
1231 1598
1232 if (flags & EVLOOP_NONBLOCK || idlecnt)
1233 block = 0.;
1234 else
1235 {
1236 block = MAX_BLOCKTIME; 1599 waittime = MAX_BLOCKTIME;
1237 1600
1238 if (timercnt) 1601 if (timercnt)
1239 { 1602 {
1240 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1603 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1241 if (block > to) block = to; 1604 if (waittime > to) waittime = to;
1242 } 1605 }
1243 1606
1244#if EV_PERIODICS 1607#if EV_PERIODIC_ENABLE
1245 if (periodiccnt) 1608 if (periodiccnt)
1246 { 1609 {
1247 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1610 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1248 if (block > to) block = to; 1611 if (waittime > to) waittime = to;
1249 } 1612 }
1250#endif 1613#endif
1251 1614
1252 if (expect_false (block < 0.)) block = 0.; 1615 if (expect_false (waittime < timeout_blocktime))
1616 waittime = timeout_blocktime;
1617
1618 sleeptime = waittime - backend_fudge;
1619
1620 if (expect_true (sleeptime > io_blocktime))
1621 sleeptime = io_blocktime;
1622
1623 if (sleeptime)
1624 {
1625 ev_sleep (sleeptime);
1626 waittime -= sleeptime;
1627 }
1253 } 1628 }
1254 1629
1255 method_poll (EV_A_ block); 1630 ++loop_count;
1631 backend_poll (EV_A_ waittime);
1256 1632
1257 /* update ev_rt_now, do magic */ 1633 /* update ev_rt_now, do magic */
1258 time_update (EV_A); 1634 time_update (EV_A_ waittime + sleeptime);
1635 }
1259 1636
1260 /* queue pending timers and reschedule them */ 1637 /* queue pending timers and reschedule them */
1261 timers_reify (EV_A); /* relative timers called last */ 1638 timers_reify (EV_A); /* relative timers called last */
1262#if EV_PERIODICS 1639#if EV_PERIODIC_ENABLE
1263 periodics_reify (EV_A); /* absolute timers called first */ 1640 periodics_reify (EV_A); /* absolute timers called first */
1264#endif 1641#endif
1265 1642
1643#if EV_IDLE_ENABLE
1266 /* queue idle watchers unless io or timers are pending */ 1644 /* queue idle watchers unless other events are pending */
1267 if (idlecnt && !any_pending (EV_A)) 1645 idle_reify (EV_A);
1268 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1646#endif
1269 1647
1270 /* queue check watchers, to be executed first */ 1648 /* queue check watchers, to be executed first */
1271 if (expect_false (checkcnt)) 1649 if (expect_false (checkcnt))
1272 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1650 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1273 1651
1274 call_pending (EV_A); 1652 call_pending (EV_A);
1275
1276 if (expect_false (loop_done))
1277 break;
1278 } 1653 }
1654 while (expect_true (
1655 activecnt
1656 && !loop_done
1657 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1658 ));
1279 1659
1280 if (loop_done != 2) 1660 if (loop_done == EVUNLOOP_ONE)
1281 loop_done = 0; 1661 loop_done = EVUNLOOP_CANCEL;
1282} 1662}
1283 1663
1284void 1664void
1285ev_unloop (EV_P_ int how) 1665ev_unloop (EV_P_ int how)
1286{ 1666{
1287 loop_done = how; 1667 loop_done = how;
1288} 1668}
1289 1669
1290/*****************************************************************************/ 1670/*****************************************************************************/
1291 1671
1292inline void 1672void inline_size
1293wlist_add (WL *head, WL elem) 1673wlist_add (WL *head, WL elem)
1294{ 1674{
1295 elem->next = *head; 1675 elem->next = *head;
1296 *head = elem; 1676 *head = elem;
1297} 1677}
1298 1678
1299inline void 1679void inline_size
1300wlist_del (WL *head, WL elem) 1680wlist_del (WL *head, WL elem)
1301{ 1681{
1302 while (*head) 1682 while (*head)
1303 { 1683 {
1304 if (*head == elem) 1684 if (*head == elem)
… …
1309 1689
1310 head = &(*head)->next; 1690 head = &(*head)->next;
1311 } 1691 }
1312} 1692}
1313 1693
1314inline void 1694void inline_speed
1315ev_clear_pending (EV_P_ W w) 1695clear_pending (EV_P_ W w)
1316{ 1696{
1317 if (w->pending) 1697 if (w->pending)
1318 { 1698 {
1319 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1699 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1320 w->pending = 0; 1700 w->pending = 0;
1321 } 1701 }
1322} 1702}
1323 1703
1324inline void 1704int
1705ev_clear_pending (EV_P_ void *w)
1706{
1707 W w_ = (W)w;
1708 int pending = w_->pending;
1709
1710 if (expect_true (pending))
1711 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1713 w_->pending = 0;
1714 p->w = 0;
1715 return p->events;
1716 }
1717 else
1718 return 0;
1719}
1720
1721void inline_size
1722pri_adjust (EV_P_ W w)
1723{
1724 int pri = w->priority;
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri;
1728}
1729
1730void inline_speed
1325ev_start (EV_P_ W w, int active) 1731ev_start (EV_P_ W w, int active)
1326{ 1732{
1327 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1733 pri_adjust (EV_A_ w);
1328 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1329
1330 w->active = active; 1734 w->active = active;
1331 ev_ref (EV_A); 1735 ev_ref (EV_A);
1332} 1736}
1333 1737
1334inline void 1738void inline_size
1335ev_stop (EV_P_ W w) 1739ev_stop (EV_P_ W w)
1336{ 1740{
1337 ev_unref (EV_A); 1741 ev_unref (EV_A);
1338 w->active = 0; 1742 w->active = 0;
1339} 1743}
1340 1744
1341/*****************************************************************************/ 1745/*****************************************************************************/
1342 1746
1343void 1747void noinline
1344ev_io_start (EV_P_ struct ev_io *w) 1748ev_io_start (EV_P_ ev_io *w)
1345{ 1749{
1346 int fd = w->fd; 1750 int fd = w->fd;
1347 1751
1348 if (expect_false (ev_is_active (w))) 1752 if (expect_false (ev_is_active (w)))
1349 return; 1753 return;
1350 1754
1351 assert (("ev_io_start called with negative fd", fd >= 0)); 1755 assert (("ev_io_start called with negative fd", fd >= 0));
1352 1756
1353 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1354 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1355 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1759 wlist_add (&anfds[fd].head, (WL)w);
1356 1760
1357 fd_change (EV_A_ fd); 1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1762 w->events &= ~EV_IOFDSET;
1358} 1763}
1359 1764
1360void 1765void noinline
1361ev_io_stop (EV_P_ struct ev_io *w) 1766ev_io_stop (EV_P_ ev_io *w)
1362{ 1767{
1363 ev_clear_pending (EV_A_ (W)w); 1768 clear_pending (EV_A_ (W)w);
1364 if (expect_false (!ev_is_active (w))) 1769 if (expect_false (!ev_is_active (w)))
1365 return; 1770 return;
1366 1771
1367 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1368 1773
1369 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1774 wlist_del (&anfds[w->fd].head, (WL)w);
1370 ev_stop (EV_A_ (W)w); 1775 ev_stop (EV_A_ (W)w);
1371 1776
1372 fd_change (EV_A_ w->fd); 1777 fd_change (EV_A_ w->fd, 1);
1373} 1778}
1374 1779
1375void 1780void noinline
1376ev_timer_start (EV_P_ struct ev_timer *w) 1781ev_timer_start (EV_P_ ev_timer *w)
1377{ 1782{
1378 if (expect_false (ev_is_active (w))) 1783 if (expect_false (ev_is_active (w)))
1379 return; 1784 return;
1380 1785
1381 ((WT)w)->at += mn_now; 1786 ((WT)w)->at += mn_now;
1382 1787
1383 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1384 1789
1385 ev_start (EV_A_ (W)w, ++timercnt); 1790 ev_start (EV_A_ (W)w, ++timercnt);
1386 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1387 timers [timercnt - 1] = w; 1792 timers [timercnt - 1] = (WT)w;
1388 upheap ((WT *)timers, timercnt - 1); 1793 upheap (timers, timercnt - 1);
1389 1794
1390 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1391} 1796}
1392 1797
1393void 1798void noinline
1394ev_timer_stop (EV_P_ struct ev_timer *w) 1799ev_timer_stop (EV_P_ ev_timer *w)
1395{ 1800{
1396 ev_clear_pending (EV_A_ (W)w); 1801 clear_pending (EV_A_ (W)w);
1397 if (expect_false (!ev_is_active (w))) 1802 if (expect_false (!ev_is_active (w)))
1398 return; 1803 return;
1399 1804
1400 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1401 1806
1807 {
1808 int active = ((W)w)->active;
1809
1402 if (expect_true (((W)w)->active < timercnt--)) 1810 if (expect_true (--active < --timercnt))
1403 { 1811 {
1404 timers [((W)w)->active - 1] = timers [timercnt]; 1812 timers [active] = timers [timercnt];
1405 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1813 adjustheap (timers, timercnt, active);
1406 } 1814 }
1815 }
1407 1816
1408 ((WT)w)->at -= mn_now; 1817 ((WT)w)->at -= mn_now;
1409 1818
1410 ev_stop (EV_A_ (W)w); 1819 ev_stop (EV_A_ (W)w);
1411} 1820}
1412 1821
1413void 1822void noinline
1414ev_timer_again (EV_P_ struct ev_timer *w) 1823ev_timer_again (EV_P_ ev_timer *w)
1415{ 1824{
1416 if (ev_is_active (w)) 1825 if (ev_is_active (w))
1417 { 1826 {
1418 if (w->repeat) 1827 if (w->repeat)
1419 { 1828 {
1420 ((WT)w)->at = mn_now + w->repeat; 1829 ((WT)w)->at = mn_now + w->repeat;
1421 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1830 adjustheap (timers, timercnt, ((W)w)->active - 1);
1422 } 1831 }
1423 else 1832 else
1424 ev_timer_stop (EV_A_ w); 1833 ev_timer_stop (EV_A_ w);
1425 } 1834 }
1426 else if (w->repeat) 1835 else if (w->repeat)
… …
1428 w->at = w->repeat; 1837 w->at = w->repeat;
1429 ev_timer_start (EV_A_ w); 1838 ev_timer_start (EV_A_ w);
1430 } 1839 }
1431} 1840}
1432 1841
1433#if EV_PERIODICS 1842#if EV_PERIODIC_ENABLE
1434void 1843void noinline
1435ev_periodic_start (EV_P_ struct ev_periodic *w) 1844ev_periodic_start (EV_P_ ev_periodic *w)
1436{ 1845{
1437 if (expect_false (ev_is_active (w))) 1846 if (expect_false (ev_is_active (w)))
1438 return; 1847 return;
1439 1848
1440 if (w->reschedule_cb) 1849 if (w->reschedule_cb)
1441 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1442 else if (w->interval) 1851 else if (w->interval)
1443 { 1852 {
1444 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1445 /* this formula differs from the one in periodic_reify because we do not always round up */ 1854 /* this formula differs from the one in periodic_reify because we do not always round up */
1446 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1447 } 1856 }
1857 else
1858 ((WT)w)->at = w->offset;
1448 1859
1449 ev_start (EV_A_ (W)w, ++periodiccnt); 1860 ev_start (EV_A_ (W)w, ++periodiccnt);
1450 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1451 periodics [periodiccnt - 1] = w; 1862 periodics [periodiccnt - 1] = (WT)w;
1452 upheap ((WT *)periodics, periodiccnt - 1); 1863 upheap (periodics, periodiccnt - 1);
1453 1864
1454 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1455} 1866}
1456 1867
1457void 1868void noinline
1458ev_periodic_stop (EV_P_ struct ev_periodic *w) 1869ev_periodic_stop (EV_P_ ev_periodic *w)
1459{ 1870{
1460 ev_clear_pending (EV_A_ (W)w); 1871 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 1872 if (expect_false (!ev_is_active (w)))
1462 return; 1873 return;
1463 1874
1464 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1465 1876
1877 {
1878 int active = ((W)w)->active;
1879
1466 if (expect_true (((W)w)->active < periodiccnt--)) 1880 if (expect_true (--active < --periodiccnt))
1467 { 1881 {
1468 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1882 periodics [active] = periodics [periodiccnt];
1469 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1883 adjustheap (periodics, periodiccnt, active);
1470 } 1884 }
1885 }
1471 1886
1472 ev_stop (EV_A_ (W)w); 1887 ev_stop (EV_A_ (W)w);
1473} 1888}
1474 1889
1475void 1890void noinline
1476ev_periodic_again (EV_P_ struct ev_periodic *w) 1891ev_periodic_again (EV_P_ ev_periodic *w)
1477{ 1892{
1478 /* TODO: use adjustheap and recalculation */ 1893 /* TODO: use adjustheap and recalculation */
1479 ev_periodic_stop (EV_A_ w); 1894 ev_periodic_stop (EV_A_ w);
1480 ev_periodic_start (EV_A_ w); 1895 ev_periodic_start (EV_A_ w);
1481} 1896}
1482#endif 1897#endif
1483 1898
1484void
1485ev_idle_start (EV_P_ struct ev_idle *w)
1486{
1487 if (expect_false (ev_is_active (w)))
1488 return;
1489
1490 ev_start (EV_A_ (W)w, ++idlecnt);
1491 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1492 idles [idlecnt - 1] = w;
1493}
1494
1495void
1496ev_idle_stop (EV_P_ struct ev_idle *w)
1497{
1498 ev_clear_pending (EV_A_ (W)w);
1499 if (expect_false (!ev_is_active (w)))
1500 return;
1501
1502 idles [((W)w)->active - 1] = idles [--idlecnt];
1503 ev_stop (EV_A_ (W)w);
1504}
1505
1506void
1507ev_prepare_start (EV_P_ struct ev_prepare *w)
1508{
1509 if (expect_false (ev_is_active (w)))
1510 return;
1511
1512 ev_start (EV_A_ (W)w, ++preparecnt);
1513 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1514 prepares [preparecnt - 1] = w;
1515}
1516
1517void
1518ev_prepare_stop (EV_P_ struct ev_prepare *w)
1519{
1520 ev_clear_pending (EV_A_ (W)w);
1521 if (expect_false (!ev_is_active (w)))
1522 return;
1523
1524 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1525 ev_stop (EV_A_ (W)w);
1526}
1527
1528void
1529ev_check_start (EV_P_ struct ev_check *w)
1530{
1531 if (expect_false (ev_is_active (w)))
1532 return;
1533
1534 ev_start (EV_A_ (W)w, ++checkcnt);
1535 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1536 checks [checkcnt - 1] = w;
1537}
1538
1539void
1540ev_check_stop (EV_P_ struct ev_check *w)
1541{
1542 ev_clear_pending (EV_A_ (W)w);
1543 if (expect_false (!ev_is_active (w)))
1544 return;
1545
1546 checks [((W)w)->active - 1] = checks [--checkcnt];
1547 ev_stop (EV_A_ (W)w);
1548}
1549
1550#ifndef SA_RESTART 1899#ifndef SA_RESTART
1551# define SA_RESTART 0 1900# define SA_RESTART 0
1552#endif 1901#endif
1553 1902
1554void 1903void noinline
1555ev_signal_start (EV_P_ struct ev_signal *w) 1904ev_signal_start (EV_P_ ev_signal *w)
1556{ 1905{
1557#if EV_MULTIPLICITY 1906#if EV_MULTIPLICITY
1558 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559#endif 1908#endif
1560 if (expect_false (ev_is_active (w))) 1909 if (expect_false (ev_is_active (w)))
1561 return; 1910 return;
1562 1911
1563 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1564 1913
1914 evpipe_init (EV_A);
1915
1916 {
1917#ifndef _WIN32
1918 sigset_t full, prev;
1919 sigfillset (&full);
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922
1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1924
1925#ifndef _WIN32
1926 sigprocmask (SIG_SETMASK, &prev, 0);
1927#endif
1928 }
1929
1565 ev_start (EV_A_ (W)w, 1); 1930 ev_start (EV_A_ (W)w, 1);
1566 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1567 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1931 wlist_add (&signals [w->signum - 1].head, (WL)w);
1568 1932
1569 if (!((WL)w)->next) 1933 if (!((WL)w)->next)
1570 { 1934 {
1571#if _WIN32 1935#if _WIN32
1572 signal (w->signum, sighandler); 1936 signal (w->signum, ev_sighandler);
1573#else 1937#else
1574 struct sigaction sa; 1938 struct sigaction sa;
1575 sa.sa_handler = sighandler; 1939 sa.sa_handler = ev_sighandler;
1576 sigfillset (&sa.sa_mask); 1940 sigfillset (&sa.sa_mask);
1577 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1941 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1578 sigaction (w->signum, &sa, 0); 1942 sigaction (w->signum, &sa, 0);
1579#endif 1943#endif
1580 } 1944 }
1581} 1945}
1582 1946
1583void 1947void noinline
1584ev_signal_stop (EV_P_ struct ev_signal *w) 1948ev_signal_stop (EV_P_ ev_signal *w)
1585{ 1949{
1586 ev_clear_pending (EV_A_ (W)w); 1950 clear_pending (EV_A_ (W)w);
1587 if (expect_false (!ev_is_active (w))) 1951 if (expect_false (!ev_is_active (w)))
1588 return; 1952 return;
1589 1953
1590 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1954 wlist_del (&signals [w->signum - 1].head, (WL)w);
1591 ev_stop (EV_A_ (W)w); 1955 ev_stop (EV_A_ (W)w);
1592 1956
1593 if (!signals [w->signum - 1].head) 1957 if (!signals [w->signum - 1].head)
1594 signal (w->signum, SIG_DFL); 1958 signal (w->signum, SIG_DFL);
1595} 1959}
1596 1960
1597void 1961void
1598ev_child_start (EV_P_ struct ev_child *w) 1962ev_child_start (EV_P_ ev_child *w)
1599{ 1963{
1600#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1601 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1965 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1602#endif 1966#endif
1603 if (expect_false (ev_is_active (w))) 1967 if (expect_false (ev_is_active (w)))
1604 return; 1968 return;
1605 1969
1606 ev_start (EV_A_ (W)w, 1); 1970 ev_start (EV_A_ (W)w, 1);
1607 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1608} 1972}
1609 1973
1610void 1974void
1611ev_child_stop (EV_P_ struct ev_child *w) 1975ev_child_stop (EV_P_ ev_child *w)
1612{ 1976{
1613 ev_clear_pending (EV_A_ (W)w); 1977 clear_pending (EV_A_ (W)w);
1614 if (expect_false (!ev_is_active (w))) 1978 if (expect_false (!ev_is_active (w)))
1615 return; 1979 return;
1616 1980
1617 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618 ev_stop (EV_A_ (W)w); 1982 ev_stop (EV_A_ (W)w);
1619} 1983}
1620 1984
1985#if EV_STAT_ENABLE
1986
1987# ifdef _WIN32
1988# undef lstat
1989# define lstat(a,b) _stati64 (a,b)
1990# endif
1991
1992#define DEF_STAT_INTERVAL 5.0074891
1993#define MIN_STAT_INTERVAL 0.1074891
1994
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996
1997#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192
1999
2000static void noinline
2001infy_add (EV_P_ ev_stat *w)
2002{
2003 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);
2004
2005 if (w->wd < 0)
2006 {
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2008
2009 /* monitor some parent directory for speedup hints */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 {
2012 char path [4096];
2013 strcpy (path, w->path);
2014
2015 do
2016 {
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019
2020 char *pend = strrchr (path, '/');
2021
2022 if (!pend)
2023 break; /* whoops, no '/', complain to your admin */
2024
2025 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 }
2030 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033
2034 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2036}
2037
2038static void noinline
2039infy_del (EV_P_ ev_stat *w)
2040{
2041 int slot;
2042 int wd = w->wd;
2043
2044 if (wd < 0)
2045 return;
2046
2047 w->wd = -2;
2048 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2049 wlist_del (&fs_hash [slot].head, (WL)w);
2050
2051 /* remove this watcher, if others are watching it, they will rearm */
2052 inotify_rm_watch (fs_fd, wd);
2053}
2054
2055static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{
2058 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev);
2062 else
2063 {
2064 WL w_;
2065
2066 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2067 {
2068 ev_stat *w = (ev_stat *)w_;
2069 w_ = w_->next; /* lets us remove this watcher and all before it */
2070
2071 if (w->wd == wd || wd == -1)
2072 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 {
2075 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */
2077 }
2078
2079 stat_timer_cb (EV_A_ &w->timer, 0);
2080 }
2081 }
2082 }
2083}
2084
2085static void
2086infy_cb (EV_P_ ev_io *w, int revents)
2087{
2088 char buf [EV_INOTIFY_BUFSIZE];
2089 struct inotify_event *ev = (struct inotify_event *)buf;
2090 int ofs;
2091 int len = read (fs_fd, buf, sizeof (buf));
2092
2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2094 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2095}
2096
2097void inline_size
2098infy_init (EV_P)
2099{
2100 if (fs_fd != -2)
2101 return;
2102
2103 fs_fd = inotify_init ();
2104
2105 if (fs_fd >= 0)
2106 {
2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2108 ev_set_priority (&fs_w, EV_MAXPRI);
2109 ev_io_start (EV_A_ &fs_w);
2110 }
2111}
2112
2113void inline_size
2114infy_fork (EV_P)
2115{
2116 int slot;
2117
2118 if (fs_fd < 0)
2119 return;
2120
2121 close (fs_fd);
2122 fs_fd = inotify_init ();
2123
2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 {
2126 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0;
2128
2129 while (w_)
2130 {
2131 ev_stat *w = (ev_stat *)w_;
2132 w_ = w_->next; /* lets us add this watcher */
2133
2134 w->wd = -1;
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else
2139 ev_timer_start (EV_A_ &w->timer);
2140 }
2141
2142 }
2143}
2144
2145#endif
2146
2147void
2148ev_stat_stat (EV_P_ ev_stat *w)
2149{
2150 if (lstat (w->path, &w->attr) < 0)
2151 w->attr.st_nlink = 0;
2152 else if (!w->attr.st_nlink)
2153 w->attr.st_nlink = 1;
2154}
2155
2156static void noinline
2157stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2158{
2159 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2160
2161 /* we copy this here each the time so that */
2162 /* prev has the old value when the callback gets invoked */
2163 w->prev = w->attr;
2164 ev_stat_stat (EV_A_ w);
2165
2166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2167 if (
2168 w->prev.st_dev != w->attr.st_dev
2169 || w->prev.st_ino != w->attr.st_ino
2170 || w->prev.st_mode != w->attr.st_mode
2171 || w->prev.st_nlink != w->attr.st_nlink
2172 || w->prev.st_uid != w->attr.st_uid
2173 || w->prev.st_gid != w->attr.st_gid
2174 || w->prev.st_rdev != w->attr.st_rdev
2175 || w->prev.st_size != w->attr.st_size
2176 || w->prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime
2179 ) {
2180 #if EV_USE_INOTIFY
2181 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */
2184 #endif
2185
2186 ev_feed_event (EV_A_ w, EV_STAT);
2187 }
2188}
2189
2190void
2191ev_stat_start (EV_P_ ev_stat *w)
2192{
2193 if (expect_false (ev_is_active (w)))
2194 return;
2195
2196 /* since we use memcmp, we need to clear any padding data etc. */
2197 memset (&w->prev, 0, sizeof (ev_statdata));
2198 memset (&w->attr, 0, sizeof (ev_statdata));
2199
2200 ev_stat_stat (EV_A_ w);
2201
2202 if (w->interval < MIN_STAT_INTERVAL)
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204
2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2206 ev_set_priority (&w->timer, ev_priority (w));
2207
2208#if EV_USE_INOTIFY
2209 infy_init (EV_A);
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w);
2213 else
2214#endif
2215 ev_timer_start (EV_A_ &w->timer);
2216
2217 ev_start (EV_A_ (W)w, 1);
2218}
2219
2220void
2221ev_stat_stop (EV_P_ ev_stat *w)
2222{
2223 clear_pending (EV_A_ (W)w);
2224 if (expect_false (!ev_is_active (w)))
2225 return;
2226
2227#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w);
2229#endif
2230 ev_timer_stop (EV_A_ &w->timer);
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234#endif
2235
2236#if EV_IDLE_ENABLE
2237void
2238ev_idle_start (EV_P_ ev_idle *w)
2239{
2240 if (expect_false (ev_is_active (w)))
2241 return;
2242
2243 pri_adjust (EV_A_ (W)w);
2244
2245 {
2246 int active = ++idlecnt [ABSPRI (w)];
2247
2248 ++idleall;
2249 ev_start (EV_A_ (W)w, active);
2250
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w;
2253 }
2254}
2255
2256void
2257ev_idle_stop (EV_P_ ev_idle *w)
2258{
2259 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w)))
2261 return;
2262
2263 {
2264 int active = ((W)w)->active;
2265
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2268
2269 ev_stop (EV_A_ (W)w);
2270 --idleall;
2271 }
2272}
2273#endif
2274
2275void
2276ev_prepare_start (EV_P_ ev_prepare *w)
2277{
2278 if (expect_false (ev_is_active (w)))
2279 return;
2280
2281 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w;
2284}
2285
2286void
2287ev_prepare_stop (EV_P_ ev_prepare *w)
2288{
2289 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w)))
2291 return;
2292
2293 {
2294 int active = ((W)w)->active;
2295 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active;
2297 }
2298
2299 ev_stop (EV_A_ (W)w);
2300}
2301
2302void
2303ev_check_start (EV_P_ ev_check *w)
2304{
2305 if (expect_false (ev_is_active (w)))
2306 return;
2307
2308 ev_start (EV_A_ (W)w, ++checkcnt);
2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2310 checks [checkcnt - 1] = w;
2311}
2312
2313void
2314ev_check_stop (EV_P_ ev_check *w)
2315{
2316 clear_pending (EV_A_ (W)w);
2317 if (expect_false (!ev_is_active (w)))
2318 return;
2319
2320 {
2321 int active = ((W)w)->active;
2322 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active;
2324 }
2325
2326 ev_stop (EV_A_ (W)w);
2327}
2328
2329#if EV_EMBED_ENABLE
2330void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w)
2332{
2333 ev_loop (w->other, EVLOOP_NONBLOCK);
2334}
2335
2336static void
2337embed_io_cb (EV_P_ ev_io *io, int revents)
2338{
2339 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2340
2341 if (ev_cb (w))
2342 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2343 else
2344 ev_loop (w->other, EVLOOP_NONBLOCK);
2345}
2346
2347static void
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351
2352 {
2353 struct ev_loop *loop = w->other;
2354
2355 while (fdchangecnt)
2356 {
2357 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 }
2360 }
2361}
2362
2363#if 0
2364static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{
2367 ev_idle_stop (EV_A_ idle);
2368}
2369#endif
2370
2371void
2372ev_embed_start (EV_P_ ev_embed *w)
2373{
2374 if (expect_false (ev_is_active (w)))
2375 return;
2376
2377 {
2378 struct ev_loop *loop = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 }
2382
2383 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io);
2385
2386 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare);
2389
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391
2392 ev_start (EV_A_ (W)w, 1);
2393}
2394
2395void
2396ev_embed_stop (EV_P_ ev_embed *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare);
2404
2405 ev_stop (EV_A_ (W)w);
2406}
2407#endif
2408
2409#if EV_FORK_ENABLE
2410void
2411ev_fork_start (EV_P_ ev_fork *w)
2412{
2413 if (expect_false (ev_is_active (w)))
2414 return;
2415
2416 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w;
2419}
2420
2421void
2422ev_fork_stop (EV_P_ ev_fork *w)
2423{
2424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w)))
2426 return;
2427
2428 {
2429 int active = ((W)w)->active;
2430 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active;
2432 }
2433
2434 ev_stop (EV_A_ (W)w);
2435}
2436#endif
2437
2438#if EV_ASYNC_ENABLE
2439void
2440ev_async_start (EV_P_ ev_async *w)
2441{
2442 if (expect_false (ev_is_active (w)))
2443 return;
2444
2445 evpipe_init (EV_A);
2446
2447 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w;
2450}
2451
2452void
2453ev_async_stop (EV_P_ ev_async *w)
2454{
2455 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w)))
2457 return;
2458
2459 {
2460 int active = ((W)w)->active;
2461 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active;
2463 }
2464
2465 ev_stop (EV_A_ (W)w);
2466}
2467
2468void
2469ev_async_send (EV_P_ ev_async *w)
2470{
2471 w->sent = 1;
2472 evpipe_write (EV_A_ &gotasync);
2473}
2474#endif
2475
1621/*****************************************************************************/ 2476/*****************************************************************************/
1622 2477
1623struct ev_once 2478struct ev_once
1624{ 2479{
1625 struct ev_io io; 2480 ev_io io;
1626 struct ev_timer to; 2481 ev_timer to;
1627 void (*cb)(int revents, void *arg); 2482 void (*cb)(int revents, void *arg);
1628 void *arg; 2483 void *arg;
1629}; 2484};
1630 2485
1631static void 2486static void
… …
1640 2495
1641 cb (revents, arg); 2496 cb (revents, arg);
1642} 2497}
1643 2498
1644static void 2499static void
1645once_cb_io (EV_P_ struct ev_io *w, int revents) 2500once_cb_io (EV_P_ ev_io *w, int revents)
1646{ 2501{
1647 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2502 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1648} 2503}
1649 2504
1650static void 2505static void
1651once_cb_to (EV_P_ struct ev_timer *w, int revents) 2506once_cb_to (EV_P_ ev_timer *w, int revents)
1652{ 2507{
1653 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2508 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1654} 2509}
1655 2510
1656void 2511void
… …
1680 ev_timer_set (&once->to, timeout, 0.); 2535 ev_timer_set (&once->to, timeout, 0.);
1681 ev_timer_start (EV_A_ &once->to); 2536 ev_timer_start (EV_A_ &once->to);
1682 } 2537 }
1683} 2538}
1684 2539
2540#if EV_MULTIPLICITY
2541 #include "ev_wrap.h"
2542#endif
2543
1685#ifdef __cplusplus 2544#ifdef __cplusplus
1686} 2545}
1687#endif 2546#endif
1688 2547

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