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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 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>
… …
109#include <errno.h> 142#include <errno.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>
147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
114 153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <sys/time.h> 155# include <sys/time.h>
117# include <sys/wait.h> 156# include <sys/wait.h>
118# include <unistd.h> 157# include <unistd.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 */
273int eventfd (unsigned int initval, int flags);
274#endif
275
177/**/ 276/**/
277
278/*
279 * This is used to avoid floating point rounding problems.
280 * It is added to ev_rt_now when scheduling periodics
281 * to ensure progress, time-wise, even when rounding
282 * errors are against us.
283 * This value is good at least till the year 4000.
284 * Better solutions welcome.
285 */
286#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 287
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 288#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) */ 289#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 */ 290/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 291
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 292#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 293# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 294# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 295#else
201# define expect(expr,value) (expr) 296# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 297# define noinline
298# if __STDC_VERSION__ < 199901L
299# define inline
300# endif
205#endif 301#endif
206 302
207#define expect_false(expr) expect ((expr) != 0, 0) 303#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 304#define expect_true(expr) expect ((expr) != 0, 1)
305#define inline_size static inline
306
307#if EV_MINIMAL
308# define inline_speed static noinline
309#else
310# define inline_speed static inline
311#endif
209 312
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 313#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 314#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 315
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 316#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 317#define EMPTY2(a,b) /* used to suppress some warnings */
215 318
216typedef ev_watcher *W; 319typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 320typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 321typedef ev_watcher_time *WT;
219 322
323#if EV_USE_MONOTONIC
324/* sig_atomic_t is used to avoid per-thread variables or locking but still */
325/* giving it a reasonably high chance of working on typical architetcures */
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 326static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
327#endif
221 328
222#ifdef _WIN32 329#ifdef _WIN32
223# include "ev_win32.c" 330# include "ev_win32.c"
224#endif 331#endif
225 332
226/*****************************************************************************/ 333/*****************************************************************************/
227 334
228static void (*syserr_cb)(const char *msg); 335static void (*syserr_cb)(const char *msg);
229 336
337void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 338ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 339{
232 syserr_cb = cb; 340 syserr_cb = cb;
233} 341}
234 342
235static void 343static void noinline
236syserr (const char *msg) 344syserr (const char *msg)
237{ 345{
238 if (!msg) 346 if (!msg)
239 msg = "(libev) system error"; 347 msg = "(libev) system error";
240 348
… …
247 } 355 }
248} 356}
249 357
250static void *(*alloc)(void *ptr, long size); 358static void *(*alloc)(void *ptr, long size);
251 359
360void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 361ev_set_allocator (void *(*cb)(void *ptr, long size))
253{ 362{
254 alloc = cb; 363 alloc = cb;
255} 364}
256 365
257static void * 366inline_speed void *
258ev_realloc (void *ptr, long size) 367ev_realloc (void *ptr, long size)
259{ 368{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 369 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261 370
262 if (!ptr && size) 371 if (!ptr && size)
… …
286typedef struct 395typedef struct
287{ 396{
288 W w; 397 W w;
289 int events; 398 int events;
290} ANPENDING; 399} ANPENDING;
400
401#if EV_USE_INOTIFY
402typedef struct
403{
404 WL head;
405} ANFS;
406#endif
291 407
292#if EV_MULTIPLICITY 408#if EV_MULTIPLICITY
293 409
294 struct ev_loop 410 struct ev_loop
295 { 411 {
… …
315 431
316#endif 432#endif
317 433
318/*****************************************************************************/ 434/*****************************************************************************/
319 435
320ev_tstamp noinline 436ev_tstamp
321ev_time (void) 437ev_time (void)
322{ 438{
323#if EV_USE_REALTIME 439#if EV_USE_REALTIME
324 struct timespec ts; 440 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 441 clock_gettime (CLOCK_REALTIME, &ts);
… …
352{ 468{
353 return ev_rt_now; 469 return ev_rt_now;
354} 470}
355#endif 471#endif
356 472
357#define array_roundsize(type,n) (((n) | 4) & ~3) 473void
474ev_sleep (ev_tstamp delay)
475{
476 if (delay > 0.)
477 {
478#if EV_USE_NANOSLEEP
479 struct timespec ts;
480
481 ts.tv_sec = (time_t)delay;
482 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
483
484 nanosleep (&ts, 0);
485#elif defined(_WIN32)
486 Sleep ((unsigned long)(delay * 1e3));
487#else
488 struct timeval tv;
489
490 tv.tv_sec = (time_t)delay;
491 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
492
493 select (0, 0, 0, 0, &tv);
494#endif
495 }
496}
497
498/*****************************************************************************/
499
500int inline_size
501array_nextsize (int elem, int cur, int cnt)
502{
503 int ncur = cur + 1;
504
505 do
506 ncur <<= 1;
507 while (cnt > ncur);
508
509 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
510 if (elem * ncur > 4096)
511 {
512 ncur *= elem;
513 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
514 ncur = ncur - sizeof (void *) * 4;
515 ncur /= elem;
516 }
517
518 return ncur;
519}
520
521static noinline void *
522array_realloc (int elem, void *base, int *cur, int cnt)
523{
524 *cur = array_nextsize (elem, *cur, cnt);
525 return ev_realloc (base, elem * *cur);
526}
358 527
359#define array_needsize(type,base,cur,cnt,init) \ 528#define array_needsize(type,base,cur,cnt,init) \
360 if (expect_false ((cnt) > cur)) \ 529 if (expect_false ((cnt) > (cur))) \
361 { \ 530 { \
362 int newcnt = cur; \ 531 int ocur_ = (cur); \
363 do \ 532 (base) = (type *)array_realloc \
364 { \ 533 (sizeof (type), (base), &(cur), (cnt)); \
365 newcnt = array_roundsize (type, newcnt << 1); \ 534 init ((base) + (ocur_), (cur) - ocur_); \
366 } \
367 while ((cnt) > newcnt); \
368 \
369 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370 init (base + cur, newcnt - cur); \
371 cur = newcnt; \
372 } 535 }
373 536
537#if 0
374#define array_slim(type,stem) \ 538#define array_slim(type,stem) \
375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 539 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376 { \ 540 { \
377 stem ## max = array_roundsize (stem ## cnt >> 1); \ 541 stem ## max = array_roundsize (stem ## cnt >> 1); \
378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 542 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 543 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380 } 544 }
545#endif
381 546
382#define array_free(stem, idx) \ 547#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 548 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
549
550/*****************************************************************************/
551
552void noinline
553ev_feed_event (EV_P_ void *w, int revents)
554{
555 W w_ = (W)w;
556 int pri = ABSPRI (w_);
557
558 if (expect_false (w_->pending))
559 pendings [pri][w_->pending - 1].events |= revents;
560 else
561 {
562 w_->pending = ++pendingcnt [pri];
563 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
564 pendings [pri][w_->pending - 1].w = w_;
565 pendings [pri][w_->pending - 1].events = revents;
566 }
567}
568
569void inline_speed
570queue_events (EV_P_ W *events, int eventcnt, int type)
571{
572 int i;
573
574 for (i = 0; i < eventcnt; ++i)
575 ev_feed_event (EV_A_ events [i], type);
576}
384 577
385/*****************************************************************************/ 578/*****************************************************************************/
386 579
387void inline_size 580void inline_size
388anfds_init (ANFD *base, int count) 581anfds_init (ANFD *base, int count)
… …
395 588
396 ++base; 589 ++base;
397 } 590 }
398} 591}
399 592
400void noinline
401ev_feed_event (EV_P_ void *w, int revents)
402{
403 W w_ = (W)w;
404
405 if (expect_false (w_->pending))
406 {
407 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408 return;
409 }
410
411 w_->pending = ++pendingcnt [ABSPRI (w_)];
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415}
416
417static void
418queue_events (EV_P_ W *events, int eventcnt, int type)
419{
420 int i;
421
422 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type);
424}
425
426void inline_speed 593void inline_speed
427fd_event (EV_P_ int fd, int revents) 594fd_event (EV_P_ int fd, int revents)
428{ 595{
429 ANFD *anfd = anfds + fd; 596 ANFD *anfd = anfds + fd;
430 ev_io *w; 597 ev_io *w;
… …
439} 606}
440 607
441void 608void
442ev_feed_fd_event (EV_P_ int fd, int revents) 609ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 610{
611 if (fd >= 0 && fd < anfdmax)
444 fd_event (EV_A_ fd, revents); 612 fd_event (EV_A_ fd, revents);
445} 613}
446
447/*****************************************************************************/
448 614
449void inline_size 615void inline_size
450fd_reify (EV_P) 616fd_reify (EV_P)
451{ 617{
452 int i; 618 int i;
… …
455 { 621 {
456 int fd = fdchanges [i]; 622 int fd = fdchanges [i];
457 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
458 ev_io *w; 624 ev_io *w;
459 625
460 int events = 0; 626 unsigned char events = 0;
461 627
462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 628 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463 events |= w->events; 629 events |= (unsigned char)w->events;
464 630
465#if EV_SELECT_IS_WINSOCKET 631#if EV_SELECT_IS_WINSOCKET
466 if (events) 632 if (events)
467 { 633 {
468 unsigned long argp; 634 unsigned long argp;
635 #ifdef EV_FD_TO_WIN32_HANDLE
636 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
637 #else
469 anfd->handle = _get_osfhandle (fd); 638 anfd->handle = _get_osfhandle (fd);
639 #endif
470 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 640 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471 } 641 }
472#endif 642#endif
473 643
644 {
645 unsigned char o_events = anfd->events;
646 unsigned char o_reify = anfd->reify;
647
474 anfd->reify = 0; 648 anfd->reify = 0;
475
476 backend_modify (EV_A_ fd, anfd->events, events);
477 anfd->events = events; 649 anfd->events = events;
650
651 if (o_events != events || o_reify & EV_IOFDSET)
652 backend_modify (EV_A_ fd, o_events, events);
653 }
478 } 654 }
479 655
480 fdchangecnt = 0; 656 fdchangecnt = 0;
481} 657}
482 658
483void inline_size 659void inline_size
484fd_change (EV_P_ int fd) 660fd_change (EV_P_ int fd, int flags)
485{ 661{
486 if (expect_false (anfds [fd].reify)) 662 unsigned char reify = anfds [fd].reify;
487 return;
488
489 anfds [fd].reify = 1; 663 anfds [fd].reify |= flags;
490 664
665 if (expect_true (!reify))
666 {
491 ++fdchangecnt; 667 ++fdchangecnt;
492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 668 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493 fdchanges [fdchangecnt - 1] = fd; 669 fdchanges [fdchangecnt - 1] = fd;
670 }
494} 671}
495 672
496void inline_speed 673void inline_speed
497fd_kill (EV_P_ int fd) 674fd_kill (EV_P_ int fd)
498{ 675{
… …
545static void noinline 722static void noinline
546fd_rearm_all (EV_P) 723fd_rearm_all (EV_P)
547{ 724{
548 int fd; 725 int fd;
549 726
550 /* this should be highly optimised to not do anything but set a flag */
551 for (fd = 0; fd < anfdmax; ++fd) 727 for (fd = 0; fd < anfdmax; ++fd)
552 if (anfds [fd].events) 728 if (anfds [fd].events)
553 { 729 {
554 anfds [fd].events = 0; 730 anfds [fd].events = 0;
555 fd_change (EV_A_ fd); 731 fd_change (EV_A_ fd, EV_IOFDSET | 1);
556 } 732 }
557} 733}
558 734
559/*****************************************************************************/ 735/*****************************************************************************/
560 736
561void inline_speed 737void inline_speed
562upheap (WT *heap, int k) 738upheap (WT *heap, int k)
563{ 739{
564 WT w = heap [k]; 740 WT w = heap [k];
565 741
566 while (k && heap [k >> 1]->at > w->at) 742 while (k)
567 { 743 {
744 int p = (k - 1) >> 1;
745
746 if (heap [p]->at <= w->at)
747 break;
748
568 heap [k] = heap [k >> 1]; 749 heap [k] = heap [p];
569 ((W)heap [k])->active = k + 1; 750 ((W)heap [k])->active = k + 1;
570 k >>= 1; 751 k = p;
571 } 752 }
572 753
573 heap [k] = w; 754 heap [k] = w;
574 ((W)heap [k])->active = k + 1; 755 ((W)heap [k])->active = k + 1;
575
576} 756}
577 757
578void inline_speed 758void inline_speed
579downheap (WT *heap, int N, int k) 759downheap (WT *heap, int N, int k)
580{ 760{
581 WT w = heap [k]; 761 WT w = heap [k];
582 762
583 while (k < (N >> 1)) 763 for (;;)
584 { 764 {
585 int j = k << 1; 765 int c = (k << 1) + 1;
586 766
587 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 767 if (c >= N)
588 ++j;
589
590 if (w->at <= heap [j]->at)
591 break; 768 break;
592 769
770 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
771 ? 1 : 0;
772
773 if (w->at <= heap [c]->at)
774 break;
775
593 heap [k] = heap [j]; 776 heap [k] = heap [c];
594 ((W)heap [k])->active = k + 1; 777 ((W)heap [k])->active = k + 1;
778
595 k = j; 779 k = c;
596 } 780 }
597 781
598 heap [k] = w; 782 heap [k] = w;
599 ((W)heap [k])->active = k + 1; 783 ((W)heap [k])->active = k + 1;
600} 784}
… …
609/*****************************************************************************/ 793/*****************************************************************************/
610 794
611typedef struct 795typedef struct
612{ 796{
613 WL head; 797 WL head;
614 sig_atomic_t volatile gotsig; 798 EV_ATOMIC_T gotsig;
615} ANSIG; 799} ANSIG;
616 800
617static ANSIG *signals; 801static ANSIG *signals;
618static int signalmax; 802static int signalmax;
619 803
620static int sigpipe [2]; 804static EV_ATOMIC_T gotsig;
621static sig_atomic_t volatile gotsig;
622static ev_io sigev;
623 805
624void inline_size 806void inline_size
625signals_init (ANSIG *base, int count) 807signals_init (ANSIG *base, int count)
626{ 808{
627 while (count--) 809 while (count--)
… …
631 813
632 ++base; 814 ++base;
633 } 815 }
634} 816}
635 817
636static void 818/*****************************************************************************/
637sighandler (int signum)
638{
639#if _WIN32
640 signal (signum, sighandler);
641#endif
642 819
643 signals [signum - 1].gotsig = 1;
644
645 if (!gotsig)
646 {
647 int old_errno = errno;
648 gotsig = 1;
649 write (sigpipe [1], &signum, 1);
650 errno = old_errno;
651 }
652}
653
654void noinline
655ev_feed_signal_event (EV_P_ int signum)
656{
657 WL w;
658
659#if EV_MULTIPLICITY
660 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
661#endif
662
663 --signum;
664
665 if (signum < 0 || signum >= signalmax)
666 return;
667
668 signals [signum].gotsig = 0;
669
670 for (w = signals [signum].head; w; w = w->next)
671 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
672}
673
674static void
675sigcb (EV_P_ ev_io *iow, int revents)
676{
677 int signum;
678
679 read (sigpipe [0], &revents, 1);
680 gotsig = 0;
681
682 for (signum = signalmax; signum--; )
683 if (signals [signum].gotsig)
684 ev_feed_signal_event (EV_A_ signum + 1);
685}
686
687void inline_size 820void inline_speed
688fd_intern (int fd) 821fd_intern (int fd)
689{ 822{
690#ifdef _WIN32 823#ifdef _WIN32
691 int arg = 1; 824 int arg = 1;
692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 825 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
695 fcntl (fd, F_SETFL, O_NONBLOCK); 828 fcntl (fd, F_SETFL, O_NONBLOCK);
696#endif 829#endif
697} 830}
698 831
699static void noinline 832static void noinline
700siginit (EV_P) 833evpipe_init (EV_P)
701{ 834{
835 if (!ev_is_active (&pipeev))
836 {
837#if EV_USE_EVENTFD
838 if ((evfd = eventfd (0, 0)) >= 0)
839 {
840 evpipe [0] = -1;
841 fd_intern (evfd);
842 ev_io_set (&pipeev, evfd, EV_READ);
843 }
844 else
845#endif
846 {
847 while (pipe (evpipe))
848 syserr ("(libev) error creating signal/async pipe");
849
702 fd_intern (sigpipe [0]); 850 fd_intern (evpipe [0]);
703 fd_intern (sigpipe [1]); 851 fd_intern (evpipe [1]);
852 ev_io_set (&pipeev, evpipe [0], EV_READ);
853 }
704 854
705 ev_io_set (&sigev, sigpipe [0], EV_READ);
706 ev_io_start (EV_A_ &sigev); 855 ev_io_start (EV_A_ &pipeev);
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 856 ev_unref (EV_A); /* watcher should not keep loop alive */
857 }
858}
859
860void inline_size
861evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862{
863 if (!*flag)
864 {
865 int old_errno = errno; /* save errno because write might clobber it */
866
867 *flag = 1;
868
869#if EV_USE_EVENTFD
870 if (evfd >= 0)
871 {
872 uint64_t counter = 1;
873 write (evfd, &counter, sizeof (uint64_t));
874 }
875 else
876#endif
877 write (evpipe [1], &old_errno, 1);
878
879 errno = old_errno;
880 }
881}
882
883static void
884pipecb (EV_P_ ev_io *iow, int revents)
885{
886#if EV_USE_EVENTFD
887 if (evfd >= 0)
888 {
889 uint64_t counter = 1;
890 read (evfd, &counter, sizeof (uint64_t));
891 }
892 else
893#endif
894 {
895 char dummy;
896 read (evpipe [0], &dummy, 1);
897 }
898
899 if (gotsig && ev_is_default_loop (EV_A))
900 {
901 int signum;
902 gotsig = 0;
903
904 for (signum = signalmax; signum--; )
905 if (signals [signum].gotsig)
906 ev_feed_signal_event (EV_A_ signum + 1);
907 }
908
909#if EV_ASYNC_ENABLE
910 if (gotasync)
911 {
912 int i;
913 gotasync = 0;
914
915 for (i = asynccnt; i--; )
916 if (asyncs [i]->sent)
917 {
918 asyncs [i]->sent = 0;
919 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
920 }
921 }
922#endif
708} 923}
709 924
710/*****************************************************************************/ 925/*****************************************************************************/
711 926
927static void
928ev_sighandler (int signum)
929{
930#if EV_MULTIPLICITY
931 struct ev_loop *loop = &default_loop_struct;
932#endif
933
934#if _WIN32
935 signal (signum, ev_sighandler);
936#endif
937
938 signals [signum - 1].gotsig = 1;
939 evpipe_write (EV_A_ &gotsig);
940}
941
942void noinline
943ev_feed_signal_event (EV_P_ int signum)
944{
945 WL w;
946
947#if EV_MULTIPLICITY
948 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
949#endif
950
951 --signum;
952
953 if (signum < 0 || signum >= signalmax)
954 return;
955
956 signals [signum].gotsig = 0;
957
958 for (w = signals [signum].head; w; w = w->next)
959 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960}
961
962/*****************************************************************************/
963
712static ev_child *childs [PID_HASHSIZE]; 964static WL childs [EV_PID_HASHSIZE];
713 965
714#ifndef _WIN32 966#ifndef _WIN32
715 967
716static ev_signal childev; 968static ev_signal childev;
969
970#ifndef WIFCONTINUED
971# define WIFCONTINUED(status) 0
972#endif
973
974void inline_speed
975child_reap (EV_P_ int chain, int pid, int status)
976{
977 ev_child *w;
978 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979
980 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
981 {
982 if ((w->pid == pid || !w->pid)
983 && (!traced || (w->flags & 1)))
984 {
985 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
986 w->rpid = pid;
987 w->rstatus = status;
988 ev_feed_event (EV_A_ (W)w, EV_CHILD);
989 }
990 }
991}
717 992
718#ifndef WCONTINUED 993#ifndef WCONTINUED
719# define WCONTINUED 0 994# define WCONTINUED 0
720#endif 995#endif
721 996
722void inline_speed
723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724{
725 ev_child *w;
726
727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728 if (w->pid == pid || !w->pid)
729 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid;
732 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 }
735}
736
737static void 997static void
738childcb (EV_P_ ev_signal *sw, int revents) 998childcb (EV_P_ ev_signal *sw, int revents)
739{ 999{
740 int pid, status; 1000 int pid, status;
741 1001
1002 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1003 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 1004 if (!WCONTINUED
1005 || errno != EINVAL
1006 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1007 return;
1008
744 /* make sure we are called again until all childs have been reaped */ 1009 /* make sure we are called again until all children have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */ 1010 /* we need to do it this way so that the callback gets called before we continue */
746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1011 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 1012
748 child_reap (EV_A_ sw, pid, pid, status); 1013 child_reap (EV_A_ pid, pid, status);
1014 if (EV_PID_HASHSIZE > 1)
749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1015 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 1016}
752 1017
753#endif 1018#endif
754 1019
755/*****************************************************************************/ 1020/*****************************************************************************/
… …
827} 1092}
828 1093
829unsigned int 1094unsigned int
830ev_embeddable_backends (void) 1095ev_embeddable_backends (void)
831{ 1096{
832 return EVBACKEND_EPOLL 1097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833 | EVBACKEND_KQUEUE 1098
834 | EVBACKEND_PORT; 1099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1100 /* please fix it and tell me how to detect the fix */
1101 flags &= ~EVBACKEND_EPOLL;
1102
1103 return flags;
835} 1104}
836 1105
837unsigned int 1106unsigned int
838ev_backend (EV_P) 1107ev_backend (EV_P)
839{ 1108{
840 return backend; 1109 return backend;
841} 1110}
842 1111
843static void 1112unsigned int
1113ev_loop_count (EV_P)
1114{
1115 return loop_count;
1116}
1117
1118void
1119ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120{
1121 io_blocktime = interval;
1122}
1123
1124void
1125ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126{
1127 timeout_blocktime = interval;
1128}
1129
1130static void noinline
844loop_init (EV_P_ unsigned int flags) 1131loop_init (EV_P_ unsigned int flags)
845{ 1132{
846 if (!backend) 1133 if (!backend)
847 { 1134 {
848#if EV_USE_MONOTONIC 1135#if EV_USE_MONOTONIC
… …
851 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1138 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852 have_monotonic = 1; 1139 have_monotonic = 1;
853 } 1140 }
854#endif 1141#endif
855 1142
856 ev_rt_now = ev_time (); 1143 ev_rt_now = ev_time ();
857 mn_now = get_clock (); 1144 mn_now = get_clock ();
858 now_floor = mn_now; 1145 now_floor = mn_now;
859 rtmn_diff = ev_rt_now - mn_now; 1146 rtmn_diff = ev_rt_now - mn_now;
1147
1148 io_blocktime = 0.;
1149 timeout_blocktime = 0.;
1150 backend = 0;
1151 backend_fd = -1;
1152 gotasync = 0;
1153#if EV_USE_INOTIFY
1154 fs_fd = -2;
1155#endif
1156
1157 /* pid check not overridable via env */
1158#ifndef _WIN32
1159 if (flags & EVFLAG_FORKCHECK)
1160 curpid = getpid ();
1161#endif
860 1162
861 if (!(flags & EVFLAG_NOENV) 1163 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure () 1164 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS")) 1165 && getenv ("LIBEV_FLAGS"))
864 flags = atoi (getenv ("LIBEV_FLAGS")); 1166 flags = atoi (getenv ("LIBEV_FLAGS"));
865 1167
866 if (!(flags & 0x0000ffffUL)) 1168 if (!(flags & 0x0000ffffUL))
867 flags |= ev_recommended_backends (); 1169 flags |= ev_recommended_backends ();
868 1170
869 backend = 0;
870#if EV_USE_PORT 1171#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1172 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 1173#endif
873#if EV_USE_KQUEUE 1174#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1175 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
881#endif 1182#endif
882#if EV_USE_SELECT 1183#if EV_USE_SELECT
883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1184 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884#endif 1185#endif
885 1186
886 ev_init (&sigev, sigcb); 1187 ev_init (&pipeev, pipecb);
887 ev_set_priority (&sigev, EV_MAXPRI); 1188 ev_set_priority (&pipeev, EV_MAXPRI);
888 } 1189 }
889} 1190}
890 1191
891static void 1192static void noinline
892loop_destroy (EV_P) 1193loop_destroy (EV_P)
893{ 1194{
894 int i; 1195 int i;
1196
1197 if (ev_is_active (&pipeev))
1198 {
1199 ev_ref (EV_A); /* signal watcher */
1200 ev_io_stop (EV_A_ &pipeev);
1201
1202#if EV_USE_EVENTFD
1203 if (evfd >= 0)
1204 close (evfd);
1205#endif
1206
1207 if (evpipe [0] >= 0)
1208 {
1209 close (evpipe [0]);
1210 close (evpipe [1]);
1211 }
1212 }
1213
1214#if EV_USE_INOTIFY
1215 if (fs_fd >= 0)
1216 close (fs_fd);
1217#endif
1218
1219 if (backend_fd >= 0)
1220 close (backend_fd);
895 1221
896#if EV_USE_PORT 1222#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1223 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 1224#endif
899#if EV_USE_KQUEUE 1225#if EV_USE_KQUEUE
… …
908#if EV_USE_SELECT 1234#if EV_USE_SELECT
909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1235 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910#endif 1236#endif
911 1237
912 for (i = NUMPRI; i--; ) 1238 for (i = NUMPRI; i--; )
1239 {
913 array_free (pending, [i]); 1240 array_free (pending, [i]);
1241#if EV_IDLE_ENABLE
1242 array_free (idle, [i]);
1243#endif
1244 }
1245
1246 ev_free (anfds); anfdmax = 0;
914 1247
915 /* have to use the microsoft-never-gets-it-right macro */ 1248 /* have to use the microsoft-never-gets-it-right macro */
916 array_free (fdchange, EMPTY0); 1249 array_free (fdchange, EMPTY);
917 array_free (timer, EMPTY0); 1250 array_free (timer, EMPTY);
918#if EV_PERIODIC_ENABLE 1251#if EV_PERIODIC_ENABLE
919 array_free (periodic, EMPTY0); 1252 array_free (periodic, EMPTY);
920#endif 1253#endif
1254#if EV_FORK_ENABLE
921 array_free (idle, EMPTY0); 1255 array_free (fork, EMPTY);
1256#endif
922 array_free (prepare, EMPTY0); 1257 array_free (prepare, EMPTY);
923 array_free (check, EMPTY0); 1258 array_free (check, EMPTY);
1259#if EV_ASYNC_ENABLE
1260 array_free (async, EMPTY);
1261#endif
924 1262
925 backend = 0; 1263 backend = 0;
926} 1264}
927 1265
928static void 1266void inline_size infy_fork (EV_P);
1267
1268void inline_size
929loop_fork (EV_P) 1269loop_fork (EV_P)
930{ 1270{
931#if EV_USE_PORT 1271#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1272 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 1273#endif
… …
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1275 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif 1276#endif
937#if EV_USE_EPOLL 1277#if EV_USE_EPOLL
938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1278 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939#endif 1279#endif
1280#if EV_USE_INOTIFY
1281 infy_fork (EV_A);
1282#endif
940 1283
941 if (ev_is_active (&sigev)) 1284 if (ev_is_active (&pipeev))
942 { 1285 {
943 /* default loop */ 1286 /* this "locks" the handlers against writing to the pipe */
1287 /* while we modify the fd vars */
1288 gotsig = 1;
1289#if EV_ASYNC_ENABLE
1290 gotasync = 1;
1291#endif
944 1292
945 ev_ref (EV_A); 1293 ev_ref (EV_A);
946 ev_io_stop (EV_A_ &sigev); 1294 ev_io_stop (EV_A_ &pipeev);
1295
1296#if EV_USE_EVENTFD
1297 if (evfd >= 0)
1298 close (evfd);
1299#endif
1300
1301 if (evpipe [0] >= 0)
1302 {
947 close (sigpipe [0]); 1303 close (evpipe [0]);
948 close (sigpipe [1]); 1304 close (evpipe [1]);
1305 }
949 1306
950 while (pipe (sigpipe))
951 syserr ("(libev) error creating pipe");
952
953 siginit (EV_A); 1307 evpipe_init (EV_A);
1308 /* now iterate over everything, in case we missed something */
1309 pipecb (EV_A_ &pipeev, EV_READ);
954 } 1310 }
955 1311
956 postfork = 0; 1312 postfork = 0;
957} 1313}
958 1314
… …
980} 1336}
981 1337
982void 1338void
983ev_loop_fork (EV_P) 1339ev_loop_fork (EV_P)
984{ 1340{
985 postfork = 1; 1341 postfork = 1; /* must be in line with ev_default_fork */
986} 1342}
987 1343
988#endif 1344#endif
989 1345
990#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
… …
993#else 1349#else
994int 1350int
995ev_default_loop (unsigned int flags) 1351ev_default_loop (unsigned int flags)
996#endif 1352#endif
997{ 1353{
998 if (sigpipe [0] == sigpipe [1])
999 if (pipe (sigpipe))
1000 return 0;
1001
1002 if (!ev_default_loop_ptr) 1354 if (!ev_default_loop_ptr)
1003 { 1355 {
1004#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1357 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006#else 1358#else
… …
1009 1361
1010 loop_init (EV_A_ flags); 1362 loop_init (EV_A_ flags);
1011 1363
1012 if (ev_backend (EV_A)) 1364 if (ev_backend (EV_A))
1013 { 1365 {
1014 siginit (EV_A);
1015
1016#ifndef _WIN32 1366#ifndef _WIN32
1017 ev_signal_init (&childev, childcb, SIGCHLD); 1367 ev_signal_init (&childev, childcb, SIGCHLD);
1018 ev_set_priority (&childev, EV_MAXPRI); 1368 ev_set_priority (&childev, EV_MAXPRI);
1019 ev_signal_start (EV_A_ &childev); 1369 ev_signal_start (EV_A_ &childev);
1020 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1370 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1037#ifndef _WIN32 1387#ifndef _WIN32
1038 ev_ref (EV_A); /* child watcher */ 1388 ev_ref (EV_A); /* child watcher */
1039 ev_signal_stop (EV_A_ &childev); 1389 ev_signal_stop (EV_A_ &childev);
1040#endif 1390#endif
1041 1391
1042 ev_ref (EV_A); /* signal watcher */
1043 ev_io_stop (EV_A_ &sigev);
1044
1045 close (sigpipe [0]); sigpipe [0] = 0;
1046 close (sigpipe [1]); sigpipe [1] = 0;
1047
1048 loop_destroy (EV_A); 1392 loop_destroy (EV_A);
1049} 1393}
1050 1394
1051void 1395void
1052ev_default_fork (void) 1396ev_default_fork (void)
… …
1054#if EV_MULTIPLICITY 1398#if EV_MULTIPLICITY
1055 struct ev_loop *loop = ev_default_loop_ptr; 1399 struct ev_loop *loop = ev_default_loop_ptr;
1056#endif 1400#endif
1057 1401
1058 if (backend) 1402 if (backend)
1059 postfork = 1; 1403 postfork = 1; /* must be in line with ev_loop_fork */
1060} 1404}
1061 1405
1062/*****************************************************************************/ 1406/*****************************************************************************/
1063 1407
1064int inline_size 1408void
1065any_pending (EV_P) 1409ev_invoke (EV_P_ void *w, int revents)
1066{ 1410{
1067 int pri; 1411 EV_CB_INVOKE ((W)w, revents);
1068
1069 for (pri = NUMPRI; pri--; )
1070 if (pendingcnt [pri])
1071 return 1;
1072
1073 return 0;
1074} 1412}
1075 1413
1076void inline_speed 1414void inline_speed
1077call_pending (EV_P) 1415call_pending (EV_P)
1078{ 1416{
… …
1083 { 1421 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1422 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1423
1086 if (expect_true (p->w)) 1424 if (expect_true (p->w))
1087 { 1425 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1426 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1427
1090 p->w->pending = 0; 1428 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1429 EV_CB_INVOKE (p->w, p->events);
1092 } 1430 }
1093 } 1431 }
… …
1096void inline_size 1434void inline_size
1097timers_reify (EV_P) 1435timers_reify (EV_P)
1098{ 1436{
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1437 while (timercnt && ((WT)timers [0])->at <= mn_now)
1100 { 1438 {
1101 ev_timer *w = timers [0]; 1439 ev_timer *w = (ev_timer *)timers [0];
1102 1440
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1441 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1442
1105 /* first reschedule or stop timer */ 1443 /* first reschedule or stop timer */
1106 if (w->repeat) 1444 if (w->repeat)
1107 { 1445 {
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1446 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109 1447
1110 ((WT)w)->at += w->repeat; 1448 ((WT)w)->at += w->repeat;
1111 if (((WT)w)->at < mn_now) 1449 if (((WT)w)->at < mn_now)
1112 ((WT)w)->at = mn_now; 1450 ((WT)w)->at = mn_now;
1113 1451
1114 downheap ((WT *)timers, timercnt, 0); 1452 downheap (timers, timercnt, 0);
1115 } 1453 }
1116 else 1454 else
1117 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1455 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118 1456
1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1457 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1124void inline_size 1462void inline_size
1125periodics_reify (EV_P) 1463periodics_reify (EV_P)
1126{ 1464{
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1465 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128 { 1466 {
1129 ev_periodic *w = periodics [0]; 1467 ev_periodic *w = (ev_periodic *)periodics [0];
1130 1468
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1469 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1470
1133 /* first reschedule or stop timer */ 1471 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1472 if (w->reschedule_cb)
1135 { 1473 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1474 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1475 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138 downheap ((WT *)periodics, periodiccnt, 0); 1476 downheap (periodics, periodiccnt, 0);
1139 } 1477 }
1140 else if (w->interval) 1478 else if (w->interval)
1141 { 1479 {
1142 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1480 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1481 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1482 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144 downheap ((WT *)periodics, periodiccnt, 0); 1483 downheap (periodics, periodiccnt, 0);
1145 } 1484 }
1146 else 1485 else
1147 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1486 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148 1487
1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1488 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1156 int i; 1495 int i;
1157 1496
1158 /* adjust periodics after time jump */ 1497 /* adjust periodics after time jump */
1159 for (i = 0; i < periodiccnt; ++i) 1498 for (i = 0; i < periodiccnt; ++i)
1160 { 1499 {
1161 ev_periodic *w = periodics [i]; 1500 ev_periodic *w = (ev_periodic *)periodics [i];
1162 1501
1163 if (w->reschedule_cb) 1502 if (w->reschedule_cb)
1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1503 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165 else if (w->interval) 1504 else if (w->interval)
1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1505 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167 } 1506 }
1168 1507
1169 /* now rebuild the heap */ 1508 /* now rebuild the heap */
1170 for (i = periodiccnt >> 1; i--; ) 1509 for (i = periodiccnt >> 1; i--; )
1171 downheap ((WT *)periodics, periodiccnt, i); 1510 downheap (periodics, periodiccnt, i);
1172} 1511}
1173#endif 1512#endif
1174 1513
1514#if EV_IDLE_ENABLE
1175int inline_size 1515void inline_size
1176time_update_monotonic (EV_P) 1516idle_reify (EV_P)
1177{ 1517{
1518 if (expect_false (idleall))
1519 {
1520 int pri;
1521
1522 for (pri = NUMPRI; pri--; )
1523 {
1524 if (pendingcnt [pri])
1525 break;
1526
1527 if (idlecnt [pri])
1528 {
1529 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1530 break;
1531 }
1532 }
1533 }
1534}
1535#endif
1536
1537void inline_speed
1538time_update (EV_P_ ev_tstamp max_block)
1539{
1540 int i;
1541
1542#if EV_USE_MONOTONIC
1543 if (expect_true (have_monotonic))
1544 {
1545 ev_tstamp odiff = rtmn_diff;
1546
1178 mn_now = get_clock (); 1547 mn_now = get_clock ();
1179 1548
1549 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1550 /* interpolate in the meantime */
1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1551 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181 { 1552 {
1182 ev_rt_now = rtmn_diff + mn_now; 1553 ev_rt_now = rtmn_diff + mn_now;
1183 return 0; 1554 return;
1184 } 1555 }
1185 else 1556
1186 {
1187 now_floor = mn_now; 1557 now_floor = mn_now;
1188 ev_rt_now = ev_time (); 1558 ev_rt_now = ev_time ();
1189 return 1;
1190 }
1191}
1192 1559
1193void inline_size 1560 /* loop a few times, before making important decisions.
1194time_update (EV_P) 1561 * on the choice of "4": one iteration isn't enough,
1195{ 1562 * in case we get preempted during the calls to
1196 int i; 1563 * ev_time and get_clock. a second call is almost guaranteed
1197 1564 * to succeed in that case, though. and looping a few more times
1198#if EV_USE_MONOTONIC 1565 * doesn't hurt either as we only do this on time-jumps or
1199 if (expect_true (have_monotonic)) 1566 * in the unlikely event of having been preempted here.
1200 { 1567 */
1201 if (time_update_monotonic (EV_A)) 1568 for (i = 4; --i; )
1202 { 1569 {
1203 ev_tstamp odiff = rtmn_diff;
1204
1205 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed
1209 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here.
1212 */
1213 for (i = 4; --i; )
1214 {
1215 rtmn_diff = ev_rt_now - mn_now; 1570 rtmn_diff = ev_rt_now - mn_now;
1216 1571
1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1572 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218 return; /* all is well */ 1573 return; /* all is well */
1219 1574
1220 ev_rt_now = ev_time (); 1575 ev_rt_now = ev_time ();
1221 mn_now = get_clock (); 1576 mn_now = get_clock ();
1222 now_floor = mn_now; 1577 now_floor = mn_now;
1223 } 1578 }
1224 1579
1225# if EV_PERIODIC_ENABLE 1580# if EV_PERIODIC_ENABLE
1226 periodics_reschedule (EV_A); 1581 periodics_reschedule (EV_A);
1227# endif 1582# endif
1228 /* no timer adjustment, as the monotonic clock doesn't jump */ 1583 /* no timer adjustment, as the monotonic clock doesn't jump */
1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1584 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230 }
1231 } 1585 }
1232 else 1586 else
1233#endif 1587#endif
1234 { 1588 {
1235 ev_rt_now = ev_time (); 1589 ev_rt_now = ev_time ();
1236 1590
1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1591 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238 { 1592 {
1239#if EV_PERIODIC_ENABLE 1593#if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1594 periodics_reschedule (EV_A);
1241#endif 1595#endif
1242
1243 /* adjust timers. this is easy, as the offset is the same for all */ 1596 /* adjust timers. this is easy, as the offset is the same for all of them */
1244 for (i = 0; i < timercnt; ++i) 1597 for (i = 0; i < timercnt; ++i)
1245 ((WT)timers [i])->at += ev_rt_now - mn_now; 1598 ((WT)timers [i])->at += ev_rt_now - mn_now;
1246 } 1599 }
1247 1600
1248 mn_now = ev_rt_now; 1601 mn_now = ev_rt_now;
… …
1264static int loop_done; 1617static int loop_done;
1265 1618
1266void 1619void
1267ev_loop (EV_P_ int flags) 1620ev_loop (EV_P_ int flags)
1268{ 1621{
1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1622 loop_done = EVUNLOOP_CANCEL;
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
1272 1623
1273 while (activecnt) 1624 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1625
1626 do
1274 { 1627 {
1628#ifndef _WIN32
1629 if (expect_false (curpid)) /* penalise the forking check even more */
1630 if (expect_false (getpid () != curpid))
1631 {
1632 curpid = getpid ();
1633 postfork = 1;
1634 }
1635#endif
1636
1637#if EV_FORK_ENABLE
1638 /* we might have forked, so queue fork handlers */
1639 if (expect_false (postfork))
1640 if (forkcnt)
1641 {
1642 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643 call_pending (EV_A);
1644 }
1645#endif
1646
1275 /* queue check watchers (and execute them) */ 1647 /* queue prepare watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1648 if (expect_false (preparecnt))
1277 { 1649 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1650 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1651 call_pending (EV_A);
1280 } 1652 }
1281 1653
1654 if (expect_false (!activecnt))
1655 break;
1656
1282 /* we might have forked, so reify kernel state if necessary */ 1657 /* we might have forked, so reify kernel state if necessary */
1283 if (expect_false (postfork)) 1658 if (expect_false (postfork))
1284 loop_fork (EV_A); 1659 loop_fork (EV_A);
1285 1660
1286 /* update fd-related kernel structures */ 1661 /* update fd-related kernel structures */
1287 fd_reify (EV_A); 1662 fd_reify (EV_A);
1288 1663
1289 /* calculate blocking time */ 1664 /* calculate blocking time */
1290 { 1665 {
1291 double block; 1666 ev_tstamp waittime = 0.;
1667 ev_tstamp sleeptime = 0.;
1292 1668
1293 if (flags & EVLOOP_NONBLOCK || idlecnt) 1669 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294 block = 0.; /* do not block at all */
1295 else
1296 { 1670 {
1297 /* update time to cancel out callback processing overhead */ 1671 /* update time to cancel out callback processing overhead */
1298#if EV_USE_MONOTONIC
1299 if (expect_true (have_monotonic))
1300 time_update_monotonic (EV_A); 1672 time_update (EV_A_ 1e100);
1301 else
1302#endif
1303 {
1304 ev_rt_now = ev_time ();
1305 mn_now = ev_rt_now;
1306 }
1307 1673
1308 block = MAX_BLOCKTIME; 1674 waittime = MAX_BLOCKTIME;
1309 1675
1310 if (timercnt) 1676 if (timercnt)
1311 { 1677 {
1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1678 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1313 if (block > to) block = to; 1679 if (waittime > to) waittime = to;
1314 } 1680 }
1315 1681
1316#if EV_PERIODIC_ENABLE 1682#if EV_PERIODIC_ENABLE
1317 if (periodiccnt) 1683 if (periodiccnt)
1318 { 1684 {
1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1685 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1320 if (block > to) block = to; 1686 if (waittime > to) waittime = to;
1321 } 1687 }
1322#endif 1688#endif
1323 1689
1324 if (expect_false (block < 0.)) block = 0.; 1690 if (expect_false (waittime < timeout_blocktime))
1691 waittime = timeout_blocktime;
1692
1693 sleeptime = waittime - backend_fudge;
1694
1695 if (expect_true (sleeptime > io_blocktime))
1696 sleeptime = io_blocktime;
1697
1698 if (sleeptime)
1699 {
1700 ev_sleep (sleeptime);
1701 waittime -= sleeptime;
1702 }
1325 } 1703 }
1326 1704
1705 ++loop_count;
1327 backend_poll (EV_A_ block); 1706 backend_poll (EV_A_ waittime);
1707
1708 /* update ev_rt_now, do magic */
1709 time_update (EV_A_ waittime + sleeptime);
1328 } 1710 }
1329
1330 /* update ev_rt_now, do magic */
1331 time_update (EV_A);
1332 1711
1333 /* queue pending timers and reschedule them */ 1712 /* queue pending timers and reschedule them */
1334 timers_reify (EV_A); /* relative timers called last */ 1713 timers_reify (EV_A); /* relative timers called last */
1335#if EV_PERIODIC_ENABLE 1714#if EV_PERIODIC_ENABLE
1336 periodics_reify (EV_A); /* absolute timers called first */ 1715 periodics_reify (EV_A); /* absolute timers called first */
1337#endif 1716#endif
1338 1717
1718#if EV_IDLE_ENABLE
1339 /* queue idle watchers unless other events are pending */ 1719 /* queue idle watchers unless other events are pending */
1340 if (idlecnt && !any_pending (EV_A)) 1720 idle_reify (EV_A);
1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1721#endif
1342 1722
1343 /* queue check watchers, to be executed first */ 1723 /* queue check watchers, to be executed first */
1344 if (expect_false (checkcnt)) 1724 if (expect_false (checkcnt))
1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1725 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346 1726
1347 call_pending (EV_A); 1727 call_pending (EV_A);
1348
1349 if (expect_false (loop_done))
1350 break;
1351 } 1728 }
1729 while (expect_true (
1730 activecnt
1731 && !loop_done
1732 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1733 ));
1352 1734
1353 if (loop_done == EVUNLOOP_ONE) 1735 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL; 1736 loop_done = EVUNLOOP_CANCEL;
1355} 1737}
1356 1738
… …
1383 head = &(*head)->next; 1765 head = &(*head)->next;
1384 } 1766 }
1385} 1767}
1386 1768
1387void inline_speed 1769void inline_speed
1388ev_clear_pending (EV_P_ W w) 1770clear_pending (EV_P_ W w)
1389{ 1771{
1390 if (w->pending) 1772 if (w->pending)
1391 { 1773 {
1392 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1774 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393 w->pending = 0; 1775 w->pending = 0;
1394 } 1776 }
1395} 1777}
1396 1778
1779int
1780ev_clear_pending (EV_P_ void *w)
1781{
1782 W w_ = (W)w;
1783 int pending = w_->pending;
1784
1785 if (expect_true (pending))
1786 {
1787 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1788 w_->pending = 0;
1789 p->w = 0;
1790 return p->events;
1791 }
1792 else
1793 return 0;
1794}
1795
1796void inline_size
1797pri_adjust (EV_P_ W w)
1798{
1799 int pri = w->priority;
1800 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802 w->priority = pri;
1803}
1804
1397void inline_speed 1805void inline_speed
1398ev_start (EV_P_ W w, int active) 1806ev_start (EV_P_ W w, int active)
1399{ 1807{
1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1808 pri_adjust (EV_A_ w);
1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403 w->active = active; 1809 w->active = active;
1404 ev_ref (EV_A); 1810 ev_ref (EV_A);
1405} 1811}
1406 1812
1407void inline_size 1813void inline_size
… …
1411 w->active = 0; 1817 w->active = 0;
1412} 1818}
1413 1819
1414/*****************************************************************************/ 1820/*****************************************************************************/
1415 1821
1416void 1822void noinline
1417ev_io_start (EV_P_ ev_io *w) 1823ev_io_start (EV_P_ ev_io *w)
1418{ 1824{
1419 int fd = w->fd; 1825 int fd = w->fd;
1420 1826
1421 if (expect_false (ev_is_active (w))) 1827 if (expect_false (ev_is_active (w)))
… …
1423 1829
1424 assert (("ev_io_start called with negative fd", fd >= 0)); 1830 assert (("ev_io_start called with negative fd", fd >= 0));
1425 1831
1426 ev_start (EV_A_ (W)w, 1); 1832 ev_start (EV_A_ (W)w, 1);
1427 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1833 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1834 wlist_add (&anfds[fd].head, (WL)w);
1429 1835
1430 fd_change (EV_A_ fd); 1836 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1837 w->events &= ~EV_IOFDSET;
1431} 1838}
1432 1839
1433void 1840void noinline
1434ev_io_stop (EV_P_ ev_io *w) 1841ev_io_stop (EV_P_ ev_io *w)
1435{ 1842{
1436 ev_clear_pending (EV_A_ (W)w); 1843 clear_pending (EV_A_ (W)w);
1437 if (expect_false (!ev_is_active (w))) 1844 if (expect_false (!ev_is_active (w)))
1438 return; 1845 return;
1439 1846
1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1847 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441 1848
1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1849 wlist_del (&anfds[w->fd].head, (WL)w);
1443 ev_stop (EV_A_ (W)w); 1850 ev_stop (EV_A_ (W)w);
1444 1851
1445 fd_change (EV_A_ w->fd); 1852 fd_change (EV_A_ w->fd, 1);
1446} 1853}
1447 1854
1448void 1855void noinline
1449ev_timer_start (EV_P_ ev_timer *w) 1856ev_timer_start (EV_P_ ev_timer *w)
1450{ 1857{
1451 if (expect_false (ev_is_active (w))) 1858 if (expect_false (ev_is_active (w)))
1452 return; 1859 return;
1453 1860
1454 ((WT)w)->at += mn_now; 1861 ((WT)w)->at += mn_now;
1455 1862
1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1863 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457 1864
1458 ev_start (EV_A_ (W)w, ++timercnt); 1865 ev_start (EV_A_ (W)w, ++timercnt);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1866 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460 timers [timercnt - 1] = w; 1867 timers [timercnt - 1] = (WT)w;
1461 upheap ((WT *)timers, timercnt - 1); 1868 upheap (timers, timercnt - 1);
1462 1869
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1870 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464} 1871}
1465 1872
1466void 1873void noinline
1467ev_timer_stop (EV_P_ ev_timer *w) 1874ev_timer_stop (EV_P_ ev_timer *w)
1468{ 1875{
1469 ev_clear_pending (EV_A_ (W)w); 1876 clear_pending (EV_A_ (W)w);
1470 if (expect_false (!ev_is_active (w))) 1877 if (expect_false (!ev_is_active (w)))
1471 return; 1878 return;
1472 1879
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1880 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474 1881
1882 {
1883 int active = ((W)w)->active;
1884
1475 if (expect_true (((W)w)->active < timercnt--)) 1885 if (expect_true (--active < --timercnt))
1476 { 1886 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 1887 timers [active] = timers [timercnt];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1888 adjustheap (timers, timercnt, active);
1479 } 1889 }
1890 }
1480 1891
1481 ((WT)w)->at -= mn_now; 1892 ((WT)w)->at -= mn_now;
1482 1893
1483 ev_stop (EV_A_ (W)w); 1894 ev_stop (EV_A_ (W)w);
1484} 1895}
1485 1896
1486void 1897void noinline
1487ev_timer_again (EV_P_ ev_timer *w) 1898ev_timer_again (EV_P_ ev_timer *w)
1488{ 1899{
1489 if (ev_is_active (w)) 1900 if (ev_is_active (w))
1490 { 1901 {
1491 if (w->repeat) 1902 if (w->repeat)
1492 { 1903 {
1493 ((WT)w)->at = mn_now + w->repeat; 1904 ((WT)w)->at = mn_now + w->repeat;
1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1905 adjustheap (timers, timercnt, ((W)w)->active - 1);
1495 } 1906 }
1496 else 1907 else
1497 ev_timer_stop (EV_A_ w); 1908 ev_timer_stop (EV_A_ w);
1498 } 1909 }
1499 else if (w->repeat) 1910 else if (w->repeat)
… …
1502 ev_timer_start (EV_A_ w); 1913 ev_timer_start (EV_A_ w);
1503 } 1914 }
1504} 1915}
1505 1916
1506#if EV_PERIODIC_ENABLE 1917#if EV_PERIODIC_ENABLE
1507void 1918void noinline
1508ev_periodic_start (EV_P_ ev_periodic *w) 1919ev_periodic_start (EV_P_ ev_periodic *w)
1509{ 1920{
1510 if (expect_false (ev_is_active (w))) 1921 if (expect_false (ev_is_active (w)))
1511 return; 1922 return;
1512 1923
… …
1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1925 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515 else if (w->interval) 1926 else if (w->interval)
1516 { 1927 {
1517 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1928 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518 /* this formula differs from the one in periodic_reify because we do not always round up */ 1929 /* this formula differs from the one in periodic_reify because we do not always round up */
1519 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1930 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520 } 1931 }
1932 else
1933 ((WT)w)->at = w->offset;
1521 1934
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 1935 ev_start (EV_A_ (W)w, ++periodiccnt);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1936 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 1937 periodics [periodiccnt - 1] = (WT)w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 1938 upheap (periodics, periodiccnt - 1);
1526 1939
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1940 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528} 1941}
1529 1942
1530void 1943void noinline
1531ev_periodic_stop (EV_P_ ev_periodic *w) 1944ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 1945{
1533 ev_clear_pending (EV_A_ (W)w); 1946 clear_pending (EV_A_ (W)w);
1534 if (expect_false (!ev_is_active (w))) 1947 if (expect_false (!ev_is_active (w)))
1535 return; 1948 return;
1536 1949
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1950 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538 1951
1952 {
1953 int active = ((W)w)->active;
1954
1539 if (expect_true (((W)w)->active < periodiccnt--)) 1955 if (expect_true (--active < --periodiccnt))
1540 { 1956 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1957 periodics [active] = periodics [periodiccnt];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1958 adjustheap (periodics, periodiccnt, active);
1543 } 1959 }
1960 }
1544 1961
1545 ev_stop (EV_A_ (W)w); 1962 ev_stop (EV_A_ (W)w);
1546} 1963}
1547 1964
1548void 1965void noinline
1549ev_periodic_again (EV_P_ ev_periodic *w) 1966ev_periodic_again (EV_P_ ev_periodic *w)
1550{ 1967{
1551 /* TODO: use adjustheap and recalculation */ 1968 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 1969 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 1970 ev_periodic_start (EV_A_ w);
1554} 1971}
1555#endif 1972#endif
1556 1973
1974#ifndef SA_RESTART
1975# define SA_RESTART 0
1976#endif
1977
1978void noinline
1979ev_signal_start (EV_P_ ev_signal *w)
1980{
1981#if EV_MULTIPLICITY
1982 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1983#endif
1984 if (expect_false (ev_is_active (w)))
1985 return;
1986
1987 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1988
1989 evpipe_init (EV_A);
1990
1991 {
1992#ifndef _WIN32
1993 sigset_t full, prev;
1994 sigfillset (&full);
1995 sigprocmask (SIG_SETMASK, &full, &prev);
1996#endif
1997
1998 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1999
2000#ifndef _WIN32
2001 sigprocmask (SIG_SETMASK, &prev, 0);
2002#endif
2003 }
2004
2005 ev_start (EV_A_ (W)w, 1);
2006 wlist_add (&signals [w->signum - 1].head, (WL)w);
2007
2008 if (!((WL)w)->next)
2009 {
2010#if _WIN32
2011 signal (w->signum, ev_sighandler);
2012#else
2013 struct sigaction sa;
2014 sa.sa_handler = ev_sighandler;
2015 sigfillset (&sa.sa_mask);
2016 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017 sigaction (w->signum, &sa, 0);
2018#endif
2019 }
2020}
2021
2022void noinline
2023ev_signal_stop (EV_P_ ev_signal *w)
2024{
2025 clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w)))
2027 return;
2028
2029 wlist_del (&signals [w->signum - 1].head, (WL)w);
2030 ev_stop (EV_A_ (W)w);
2031
2032 if (!signals [w->signum - 1].head)
2033 signal (w->signum, SIG_DFL);
2034}
2035
2036void
2037ev_child_start (EV_P_ ev_child *w)
2038{
2039#if EV_MULTIPLICITY
2040 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041#endif
2042 if (expect_false (ev_is_active (w)))
2043 return;
2044
2045 ev_start (EV_A_ (W)w, 1);
2046 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2047}
2048
2049void
2050ev_child_stop (EV_P_ ev_child *w)
2051{
2052 clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w)))
2054 return;
2055
2056 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2057 ev_stop (EV_A_ (W)w);
2058}
2059
2060#if EV_STAT_ENABLE
2061
2062# ifdef _WIN32
2063# undef lstat
2064# define lstat(a,b) _stati64 (a,b)
2065# endif
2066
2067#define DEF_STAT_INTERVAL 5.0074891
2068#define MIN_STAT_INTERVAL 0.1074891
2069
2070static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071
2072#if EV_USE_INOTIFY
2073# define EV_INOTIFY_BUFSIZE 8192
2074
2075static void noinline
2076infy_add (EV_P_ ev_stat *w)
2077{
2078 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);
2079
2080 if (w->wd < 0)
2081 {
2082 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2083
2084 /* monitor some parent directory for speedup hints */
2085 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086 {
2087 char path [4096];
2088 strcpy (path, w->path);
2089
2090 do
2091 {
2092 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094
2095 char *pend = strrchr (path, '/');
2096
2097 if (!pend)
2098 break; /* whoops, no '/', complain to your admin */
2099
2100 *pend = 0;
2101 w->wd = inotify_add_watch (fs_fd, path, mask);
2102 }
2103 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104 }
2105 }
2106 else
2107 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108
2109 if (w->wd >= 0)
2110 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2111}
2112
2113static void noinline
2114infy_del (EV_P_ ev_stat *w)
2115{
2116 int slot;
2117 int wd = w->wd;
2118
2119 if (wd < 0)
2120 return;
2121
2122 w->wd = -2;
2123 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2124 wlist_del (&fs_hash [slot].head, (WL)w);
2125
2126 /* remove this watcher, if others are watching it, they will rearm */
2127 inotify_rm_watch (fs_fd, wd);
2128}
2129
2130static void noinline
2131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132{
2133 if (slot < 0)
2134 /* overflow, need to check for all hahs slots */
2135 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2136 infy_wd (EV_A_ slot, wd, ev);
2137 else
2138 {
2139 WL w_;
2140
2141 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2142 {
2143 ev_stat *w = (ev_stat *)w_;
2144 w_ = w_->next; /* lets us remove this watcher and all before it */
2145
2146 if (w->wd == wd || wd == -1)
2147 {
2148 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149 {
2150 w->wd = -1;
2151 infy_add (EV_A_ w); /* re-add, no matter what */
2152 }
2153
2154 stat_timer_cb (EV_A_ &w->timer, 0);
2155 }
2156 }
2157 }
2158}
2159
2160static void
2161infy_cb (EV_P_ ev_io *w, int revents)
2162{
2163 char buf [EV_INOTIFY_BUFSIZE];
2164 struct inotify_event *ev = (struct inotify_event *)buf;
2165 int ofs;
2166 int len = read (fs_fd, buf, sizeof (buf));
2167
2168 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2169 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2170}
2171
2172void inline_size
2173infy_init (EV_P)
2174{
2175 if (fs_fd != -2)
2176 return;
2177
2178 fs_fd = inotify_init ();
2179
2180 if (fs_fd >= 0)
2181 {
2182 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183 ev_set_priority (&fs_w, EV_MAXPRI);
2184 ev_io_start (EV_A_ &fs_w);
2185 }
2186}
2187
2188void inline_size
2189infy_fork (EV_P)
2190{
2191 int slot;
2192
2193 if (fs_fd < 0)
2194 return;
2195
2196 close (fs_fd);
2197 fs_fd = inotify_init ();
2198
2199 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2200 {
2201 WL w_ = fs_hash [slot].head;
2202 fs_hash [slot].head = 0;
2203
2204 while (w_)
2205 {
2206 ev_stat *w = (ev_stat *)w_;
2207 w_ = w_->next; /* lets us add this watcher */
2208
2209 w->wd = -1;
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); /* re-add, no matter what */
2213 else
2214 ev_timer_start (EV_A_ &w->timer);
2215 }
2216
2217 }
2218}
2219
2220#endif
2221
2222void
2223ev_stat_stat (EV_P_ ev_stat *w)
2224{
2225 if (lstat (w->path, &w->attr) < 0)
2226 w->attr.st_nlink = 0;
2227 else if (!w->attr.st_nlink)
2228 w->attr.st_nlink = 1;
2229}
2230
2231static void noinline
2232stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2233{
2234 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2235
2236 /* we copy this here each the time so that */
2237 /* prev has the old value when the callback gets invoked */
2238 w->prev = w->attr;
2239 ev_stat_stat (EV_A_ w);
2240
2241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2242 if (
2243 w->prev.st_dev != w->attr.st_dev
2244 || w->prev.st_ino != w->attr.st_ino
2245 || w->prev.st_mode != w->attr.st_mode
2246 || w->prev.st_nlink != w->attr.st_nlink
2247 || w->prev.st_uid != w->attr.st_uid
2248 || w->prev.st_gid != w->attr.st_gid
2249 || w->prev.st_rdev != w->attr.st_rdev
2250 || w->prev.st_size != w->attr.st_size
2251 || w->prev.st_atime != w->attr.st_atime
2252 || w->prev.st_mtime != w->attr.st_mtime
2253 || w->prev.st_ctime != w->attr.st_ctime
2254 ) {
2255 #if EV_USE_INOTIFY
2256 infy_del (EV_A_ w);
2257 infy_add (EV_A_ w);
2258 ev_stat_stat (EV_A_ w); /* avoid race... */
2259 #endif
2260
2261 ev_feed_event (EV_A_ w, EV_STAT);
2262 }
2263}
2264
2265void
2266ev_stat_start (EV_P_ ev_stat *w)
2267{
2268 if (expect_false (ev_is_active (w)))
2269 return;
2270
2271 /* since we use memcmp, we need to clear any padding data etc. */
2272 memset (&w->prev, 0, sizeof (ev_statdata));
2273 memset (&w->attr, 0, sizeof (ev_statdata));
2274
2275 ev_stat_stat (EV_A_ w);
2276
2277 if (w->interval < MIN_STAT_INTERVAL)
2278 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279
2280 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2281 ev_set_priority (&w->timer, ev_priority (w));
2282
2283#if EV_USE_INOTIFY
2284 infy_init (EV_A);
2285
2286 if (fs_fd >= 0)
2287 infy_add (EV_A_ w);
2288 else
2289#endif
2290 ev_timer_start (EV_A_ &w->timer);
2291
2292 ev_start (EV_A_ (W)w, 1);
2293}
2294
2295void
2296ev_stat_stop (EV_P_ ev_stat *w)
2297{
2298 clear_pending (EV_A_ (W)w);
2299 if (expect_false (!ev_is_active (w)))
2300 return;
2301
2302#if EV_USE_INOTIFY
2303 infy_del (EV_A_ w);
2304#endif
2305 ev_timer_stop (EV_A_ &w->timer);
2306
2307 ev_stop (EV_A_ (W)w);
2308}
2309#endif
2310
2311#if EV_IDLE_ENABLE
1557void 2312void
1558ev_idle_start (EV_P_ ev_idle *w) 2313ev_idle_start (EV_P_ ev_idle *w)
1559{ 2314{
1560 if (expect_false (ev_is_active (w))) 2315 if (expect_false (ev_is_active (w)))
1561 return; 2316 return;
1562 2317
2318 pri_adjust (EV_A_ (W)w);
2319
2320 {
2321 int active = ++idlecnt [ABSPRI (w)];
2322
2323 ++idleall;
1563 ev_start (EV_A_ (W)w, ++idlecnt); 2324 ev_start (EV_A_ (W)w, active);
2325
1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2326 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1565 idles [idlecnt - 1] = w; 2327 idles [ABSPRI (w)][active - 1] = w;
2328 }
1566} 2329}
1567 2330
1568void 2331void
1569ev_idle_stop (EV_P_ ev_idle *w) 2332ev_idle_stop (EV_P_ ev_idle *w)
1570{ 2333{
1571 ev_clear_pending (EV_A_ (W)w); 2334 clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w))) 2335 if (expect_false (!ev_is_active (w)))
1573 return; 2336 return;
1574 2337
1575 { 2338 {
1576 int active = ((W)w)->active; 2339 int active = ((W)w)->active;
1577 idles [active - 1] = idles [--idlecnt]; 2340
2341 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1578 ((W)idles [active - 1])->active = active; 2342 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2343
2344 ev_stop (EV_A_ (W)w);
2345 --idleall;
1579 } 2346 }
1580
1581 ev_stop (EV_A_ (W)w);
1582} 2347}
2348#endif
1583 2349
1584void 2350void
1585ev_prepare_start (EV_P_ ev_prepare *w) 2351ev_prepare_start (EV_P_ ev_prepare *w)
1586{ 2352{
1587 if (expect_false (ev_is_active (w))) 2353 if (expect_false (ev_is_active (w)))
… …
1593} 2359}
1594 2360
1595void 2361void
1596ev_prepare_stop (EV_P_ ev_prepare *w) 2362ev_prepare_stop (EV_P_ ev_prepare *w)
1597{ 2363{
1598 ev_clear_pending (EV_A_ (W)w); 2364 clear_pending (EV_A_ (W)w);
1599 if (expect_false (!ev_is_active (w))) 2365 if (expect_false (!ev_is_active (w)))
1600 return; 2366 return;
1601 2367
1602 { 2368 {
1603 int active = ((W)w)->active; 2369 int active = ((W)w)->active;
… …
1620} 2386}
1621 2387
1622void 2388void
1623ev_check_stop (EV_P_ ev_check *w) 2389ev_check_stop (EV_P_ ev_check *w)
1624{ 2390{
1625 ev_clear_pending (EV_A_ (W)w); 2391 clear_pending (EV_A_ (W)w);
1626 if (expect_false (!ev_is_active (w))) 2392 if (expect_false (!ev_is_active (w)))
1627 return; 2393 return;
1628 2394
1629 { 2395 {
1630 int active = ((W)w)->active; 2396 int active = ((W)w)->active;
… …
1633 } 2399 }
1634 2400
1635 ev_stop (EV_A_ (W)w); 2401 ev_stop (EV_A_ (W)w);
1636} 2402}
1637 2403
1638#ifndef SA_RESTART
1639# define SA_RESTART 0
1640#endif
1641
1642void
1643ev_signal_start (EV_P_ ev_signal *w)
1644{
1645#if EV_MULTIPLICITY
1646 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647#endif
1648 if (expect_false (ev_is_active (w)))
1649 return;
1650
1651 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652
1653 ev_start (EV_A_ (W)w, 1);
1654 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1656
1657 if (!((WL)w)->next)
1658 {
1659#if _WIN32
1660 signal (w->signum, sighandler);
1661#else
1662 struct sigaction sa;
1663 sa.sa_handler = sighandler;
1664 sigfillset (&sa.sa_mask);
1665 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1666 sigaction (w->signum, &sa, 0);
1667#endif
1668 }
1669}
1670
1671void
1672ev_signal_stop (EV_P_ ev_signal *w)
1673{
1674 ev_clear_pending (EV_A_ (W)w);
1675 if (expect_false (!ev_is_active (w)))
1676 return;
1677
1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1679 ev_stop (EV_A_ (W)w);
1680
1681 if (!signals [w->signum - 1].head)
1682 signal (w->signum, SIG_DFL);
1683}
1684
1685void
1686ev_child_start (EV_P_ ev_child *w)
1687{
1688#if EV_MULTIPLICITY
1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1690#endif
1691 if (expect_false (ev_is_active (w)))
1692 return;
1693
1694 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1696}
1697
1698void
1699ev_child_stop (EV_P_ ev_child *w)
1700{
1701 ev_clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w)))
1703 return;
1704
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1706 ev_stop (EV_A_ (W)w);
1707}
1708
1709#if EV_EMBED_ENABLE 2404#if EV_EMBED_ENABLE
1710void noinline 2405void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w) 2406ev_embed_sweep (EV_P_ ev_embed *w)
1712{ 2407{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK); 2408 ev_loop (w->other, EVLOOP_NONBLOCK);
1714} 2409}
1715 2410
1716static void 2411static void
1717embed_cb (EV_P_ ev_io *io, int revents) 2412embed_io_cb (EV_P_ ev_io *io, int revents)
1718{ 2413{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720 2415
1721 if (ev_cb (w)) 2416 if (ev_cb (w))
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2417 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723 else 2418 else
1724 ev_embed_sweep (loop, w); 2419 ev_loop (w->other, EVLOOP_NONBLOCK);
1725} 2420}
2421
2422static void
2423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424{
2425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426
2427 {
2428 struct ev_loop *loop = w->other;
2429
2430 while (fdchangecnt)
2431 {
2432 fd_reify (EV_A);
2433 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2434 }
2435 }
2436}
2437
2438#if 0
2439static void
2440embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2441{
2442 ev_idle_stop (EV_A_ idle);
2443}
2444#endif
1726 2445
1727void 2446void
1728ev_embed_start (EV_P_ ev_embed *w) 2447ev_embed_start (EV_P_ ev_embed *w)
1729{ 2448{
1730 if (expect_false (ev_is_active (w))) 2449 if (expect_false (ev_is_active (w)))
1731 return; 2450 return;
1732 2451
1733 { 2452 {
1734 struct ev_loop *loop = w->loop; 2453 struct ev_loop *loop = w->other;
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2454 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2455 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1737 } 2456 }
1738 2457
1739 ev_set_priority (&w->io, ev_priority (w)); 2458 ev_set_priority (&w->io, ev_priority (w));
1740 ev_io_start (EV_A_ &w->io); 2459 ev_io_start (EV_A_ &w->io);
1741 2460
2461 ev_prepare_init (&w->prepare, embed_prepare_cb);
2462 ev_set_priority (&w->prepare, EV_MINPRI);
2463 ev_prepare_start (EV_A_ &w->prepare);
2464
2465 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466
1742 ev_start (EV_A_ (W)w, 1); 2467 ev_start (EV_A_ (W)w, 1);
1743} 2468}
1744 2469
1745void 2470void
1746ev_embed_stop (EV_P_ ev_embed *w) 2471ev_embed_stop (EV_P_ ev_embed *w)
1747{ 2472{
1748 ev_clear_pending (EV_A_ (W)w); 2473 clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w))) 2474 if (expect_false (!ev_is_active (w)))
1750 return; 2475 return;
1751 2476
1752 ev_io_stop (EV_A_ &w->io); 2477 ev_io_stop (EV_A_ &w->io);
2478 ev_prepare_stop (EV_A_ &w->prepare);
1753 2479
1754 ev_stop (EV_A_ (W)w); 2480 ev_stop (EV_A_ (W)w);
1755} 2481}
1756#endif 2482#endif
1757 2483
1758#if EV_STAT_ENABLE 2484#if EV_FORK_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void 2485void
1765ev_stat_stat (EV_P_ ev_stat *w)
1766{
1767 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1;
1771}
1772
1773static void
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w);
1782
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784 ev_feed_event (EV_A_ w, EV_STAT);
1785}
1786
1787void
1788ev_stat_start (EV_P_ ev_stat *w) 2486ev_fork_start (EV_P_ ev_fork *w)
1789{ 2487{
1790 if (expect_false (ev_is_active (w))) 2488 if (expect_false (ev_is_active (w)))
1791 return; 2489 return;
1792 2490
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w);
1798
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w));
1801 ev_timer_start (EV_A_ &w->timer);
1802
1803 ev_start (EV_A_ (W)w, 1); 2491 ev_start (EV_A_ (W)w, ++forkcnt);
2492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493 forks [forkcnt - 1] = w;
1804} 2494}
1805 2495
1806void 2496void
1807ev_stat_stop (EV_P_ ev_stat *w) 2497ev_fork_stop (EV_P_ ev_fork *w)
1808{ 2498{
1809 ev_clear_pending (EV_A_ (W)w); 2499 clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2500 if (expect_false (!ev_is_active (w)))
1811 return; 2501 return;
1812 2502
1813 ev_timer_stop (EV_A_ &w->timer); 2503 {
2504 int active = ((W)w)->active;
2505 forks [active - 1] = forks [--forkcnt];
2506 ((W)forks [active - 1])->active = active;
2507 }
1814 2508
1815 ev_stop (EV_A_ (W)w); 2509 ev_stop (EV_A_ (W)w);
2510}
2511#endif
2512
2513#if EV_ASYNC_ENABLE
2514void
2515ev_async_start (EV_P_ ev_async *w)
2516{
2517 if (expect_false (ev_is_active (w)))
2518 return;
2519
2520 evpipe_init (EV_A);
2521
2522 ev_start (EV_A_ (W)w, ++asynccnt);
2523 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524 asyncs [asynccnt - 1] = w;
2525}
2526
2527void
2528ev_async_stop (EV_P_ ev_async *w)
2529{
2530 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w)))
2532 return;
2533
2534 {
2535 int active = ((W)w)->active;
2536 asyncs [active - 1] = asyncs [--asynccnt];
2537 ((W)asyncs [active - 1])->active = active;
2538 }
2539
2540 ev_stop (EV_A_ (W)w);
2541}
2542
2543void
2544ev_async_send (EV_P_ ev_async *w)
2545{
2546 w->sent = 1;
2547 evpipe_write (EV_A_ &gotasync);
1816} 2548}
1817#endif 2549#endif
1818 2550
1819/*****************************************************************************/ 2551/*****************************************************************************/
1820 2552
… …
1878 ev_timer_set (&once->to, timeout, 0.); 2610 ev_timer_set (&once->to, timeout, 0.);
1879 ev_timer_start (EV_A_ &once->to); 2611 ev_timer_start (EV_A_ &once->to);
1880 } 2612 }
1881} 2613}
1882 2614
2615#if EV_MULTIPLICITY
2616 #include "ev_wrap.h"
2617#endif
2618
1883#ifdef __cplusplus 2619#ifdef __cplusplus
1884} 2620}
1885#endif 2621#endif
1886 2622

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