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Comparing libev/ev.c (file contents):
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC vs.
Revision 1.212 by root, Tue Feb 19 19:01:13 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
… …
47# ifndef EV_USE_MONOTONIC 59# ifndef EV_USE_MONOTONIC
48# define EV_USE_MONOTONIC 0 60# define EV_USE_MONOTONIC 0
49# endif 61# endif
50# ifndef EV_USE_REALTIME 62# ifndef EV_USE_REALTIME
51# define EV_USE_REALTIME 0 63# define EV_USE_REALTIME 0
64# endif
65# endif
66
67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
52# endif 72# endif
53# endif 73# endif
54 74
55# ifndef EV_USE_SELECT 75# ifndef EV_USE_SELECT
56# if HAVE_SELECT && HAVE_SYS_SELECT_H 76# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
90# else 110# else
91# define EV_USE_PORT 0 111# define EV_USE_PORT 0
92# endif 112# endif
93# endif 113# endif
94 114
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
121# endif
122
95#endif 123#endif
96 124
97#include <math.h> 125#include <math.h>
98#include <stdlib.h> 126#include <stdlib.h>
99#include <fcntl.h> 127#include <fcntl.h>
… …
106#include <sys/types.h> 134#include <sys/types.h>
107#include <time.h> 135#include <time.h>
108 136
109#include <signal.h> 137#include <signal.h>
110 138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
111#ifndef _WIN32 145#ifndef _WIN32
112# include <unistd.h>
113# include <sys/time.h> 146# include <sys/time.h>
114# include <sys/wait.h> 147# include <sys/wait.h>
148# include <unistd.h>
115#else 149#else
116# define WIN32_LEAN_AND_MEAN 150# define WIN32_LEAN_AND_MEAN
117# include <windows.h> 151# include <windows.h>
118# ifndef EV_SELECT_IS_WINSOCKET 152# ifndef EV_SELECT_IS_WINSOCKET
119# define EV_SELECT_IS_WINSOCKET 1 153# define EV_SELECT_IS_WINSOCKET 1
… …
128 162
129#ifndef EV_USE_REALTIME 163#ifndef EV_USE_REALTIME
130# define EV_USE_REALTIME 0 164# define EV_USE_REALTIME 0
131#endif 165#endif
132 166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
133#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
134# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
135#endif 173#endif
136 174
137#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
… …
152 190
153#ifndef EV_USE_PORT 191#ifndef EV_USE_PORT
154# define EV_USE_PORT 0 192# define EV_USE_PORT 0
155#endif 193#endif
156 194
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
157/**/ 215/**/
158
159/* darwin simply cannot be helped */
160#ifdef __APPLE__
161# undef EV_USE_POLL
162# undef EV_USE_KQUEUE
163#endif
164 216
165#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
166# undef EV_USE_MONOTONIC 218# undef EV_USE_MONOTONIC
167# define EV_USE_MONOTONIC 0 219# define EV_USE_MONOTONIC 0
168#endif 220#endif
… …
170#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
171# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
172# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
173#endif 225#endif
174 226
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
175#if EV_SELECT_IS_WINSOCKET 242#if EV_SELECT_IS_WINSOCKET
176# include <winsock.h> 243# include <winsock.h>
177#endif 244#endif
178 245
179/**/ 246/**/
180 247
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
181#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) */
182#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) */
183#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
184/*#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 */
185 261
186#ifdef EV_H
187# include EV_H
188#else
189# include "ev.h"
190#endif
191
192#if __GNUC__ >= 3 262#if __GNUC__ >= 4
193# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
194# define inline static inline 264# define noinline __attribute__ ((noinline))
195#else 265#else
196# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
197# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
198#endif 271#endif
199 272
200#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
201#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
202 282
203#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
204#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
205 285
206#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
207#define EMPTY2(a,b) /* used to suppress some warnings */ 287#define EMPTY2(a,b) /* used to suppress some warnings */
208 288
209typedef struct ev_watcher *W; 289typedef ev_watcher *W;
210typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
211typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
212 292
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 */
213static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
214 298
215#ifdef _WIN32 299#ifdef _WIN32
216# include "ev_win32.c" 300# include "ev_win32.c"
217#endif 301#endif
218 302
219/*****************************************************************************/ 303/*****************************************************************************/
220 304
221static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
222 306
307void
223void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
224{ 309{
225 syserr_cb = cb; 310 syserr_cb = cb;
226} 311}
227 312
228static void 313static void noinline
229syserr (const char *msg) 314syserr (const char *msg)
230{ 315{
231 if (!msg) 316 if (!msg)
232 msg = "(libev) system error"; 317 msg = "(libev) system error";
233 318
… …
240 } 325 }
241} 326}
242 327
243static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
244 329
330void
245void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
246{ 332{
247 alloc = cb; 333 alloc = cb;
248} 334}
249 335
250static void * 336inline_speed void *
251ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
252{ 338{
253 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
254 340
255 if (!ptr && size) 341 if (!ptr && size)
… …
279typedef struct 365typedef struct
280{ 366{
281 W w; 367 W w;
282 int events; 368 int events;
283} ANPENDING; 369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
284 377
285#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
286 379
287 struct ev_loop 380 struct ev_loop
288 { 381 {
… …
322 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
323 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
324#endif 417#endif
325} 418}
326 419
327inline ev_tstamp 420ev_tstamp inline_size
328get_clock (void) 421get_clock (void)
329{ 422{
330#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
331 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
332 { 425 {
… …
345{ 438{
346 return ev_rt_now; 439 return ev_rt_now;
347} 440}
348#endif 441#endif
349 442
350#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 (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}
351 497
352#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
353 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
354 { \ 500 { \
355 int newcnt = cur; \ 501 int ocur_ = (cur); \
356 do \ 502 (base) = (type *)array_realloc \
357 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
358 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
359 } \
360 while ((cnt) > newcnt); \
361 \
362 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
363 init (base + cur, newcnt - cur); \
364 cur = newcnt; \
365 } 505 }
366 506
507#if 0
367#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
368 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
369 { \ 510 { \
370 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
371 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
372 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
373 } 514 }
515#endif
374 516
375#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
376 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;
377 519
378/*****************************************************************************/ 520/*****************************************************************************/
379 521
380static 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
381anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
382{ 552{
383 while (count--) 553 while (count--)
384 { 554 {
385 base->head = 0; 555 base->head = 0;
… …
388 558
389 ++base; 559 ++base;
390 } 560 }
391} 561}
392 562
393void 563void inline_speed
394ev_feed_event (EV_P_ void *w, int revents)
395{
396 W w_ = (W)w;
397
398 if (expect_false (w_->pending))
399 {
400 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
401 return;
402 }
403
404 w_->pending = ++pendingcnt [ABSPRI (w_)];
405 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
406 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408}
409
410static void
411queue_events (EV_P_ W *events, int eventcnt, int type)
412{
413 int i;
414
415 for (i = 0; i < eventcnt; ++i)
416 ev_feed_event (EV_A_ events [i], type);
417}
418
419inline void
420fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
421{ 565{
422 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
423 struct ev_io *w; 567 ev_io *w;
424 568
425 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)
426 { 570 {
427 int ev = w->events & revents; 571 int ev = w->events & revents;
428 572
429 if (ev) 573 if (ev)
430 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
432} 576}
433 577
434void 578void
435ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
436{ 580{
581 if (fd >= 0 && fd < anfdmax)
437 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
438} 583}
439 584
440/*****************************************************************************/ 585void inline_size
441
442inline void
443fd_reify (EV_P) 586fd_reify (EV_P)
444{ 587{
445 int i; 588 int i;
446 589
447 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
448 { 591 {
449 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
450 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
451 struct ev_io *w; 594 ev_io *w;
452 595
453 int events = 0; 596 unsigned char events = 0;
454 597
455 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)
456 events |= w->events; 599 events |= (unsigned char)w->events;
457 600
458#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
459 if (events) 602 if (events)
460 { 603 {
461 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
462 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
463 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));
464 } 611 }
465#endif 612#endif
466 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
467 anfd->reify = 0; 618 anfd->reify = 0;
468
469 method_modify (EV_A_ fd, anfd->events, events);
470 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 }
471 } 624 }
472 625
473 fdchangecnt = 0; 626 fdchangecnt = 0;
474} 627}
475 628
476static void 629void inline_size
477fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
478{ 631{
479 if (expect_false (anfds [fd].reify)) 632 unsigned char reify = anfds [fd].reify;
480 return;
481
482 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
483 634
635 if (expect_true (!reify))
636 {
484 ++fdchangecnt; 637 ++fdchangecnt;
485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
487} 641}
488 642
489static void 643void inline_speed
490fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
491{ 645{
492 struct ev_io *w; 646 ev_io *w;
493 647
494 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
495 { 649 {
496 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
497 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);
498 } 652 }
499} 653}
500 654
501inline int 655int inline_size
502fd_valid (int fd) 656fd_valid (int fd)
503{ 657{
504#ifdef _WIN32 658#ifdef _WIN32
505 return _get_osfhandle (fd) != -1; 659 return _get_osfhandle (fd) != -1;
506#else 660#else
507 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
508#endif 662#endif
509} 663}
510 664
511/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
512static void 666static void noinline
513fd_ebadf (EV_P) 667fd_ebadf (EV_P)
514{ 668{
515 int fd; 669 int fd;
516 670
517 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
519 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
520 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
521} 675}
522 676
523/* 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 */
524static void 678static void noinline
525fd_enomem (EV_P) 679fd_enomem (EV_P)
526{ 680{
527 int fd; 681 int fd;
528 682
529 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
532 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
533 return; 687 return;
534 } 688 }
535} 689}
536 690
537/* 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 */
538static void 692static void noinline
539fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
540{ 694{
541 int fd; 695 int fd;
542 696
543 /* this should be highly optimised to not do anything but set a flag */
544 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
545 if (anfds [fd].events) 698 if (anfds [fd].events)
546 { 699 {
547 anfds [fd].events = 0; 700 anfds [fd].events = 0;
548 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
549 } 702 }
550} 703}
551 704
552/*****************************************************************************/ 705/*****************************************************************************/
553 706
554static void 707void inline_speed
555upheap (WT *heap, int k) 708upheap (WT *heap, int k)
556{ 709{
557 WT w = heap [k]; 710 WT w = heap [k];
558 711
559 while (k && heap [k >> 1]->at > w->at) 712 while (k)
560 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
561 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
562 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
563 k >>= 1; 721 k = p;
564 } 722 }
565 723
566 heap [k] = w; 724 heap [k] = w;
567 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
568
569} 726}
570 727
571static void 728void inline_speed
572downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
573{ 730{
574 WT w = heap [k]; 731 WT w = heap [k];
575 732
576 while (k < (N >> 1)) 733 for (;;)
577 { 734 {
578 int j = k << 1; 735 int c = (k << 1) + 1;
579 736
580 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
581 ++j;
582
583 if (w->at <= heap [j]->at)
584 break; 738 break;
585 739
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
586 heap [k] = heap [j]; 746 heap [k] = heap [c];
587 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
588 k = j; 749 k = c;
589 } 750 }
590 751
591 heap [k] = w; 752 heap [k] = w;
592 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
593} 754}
594 755
595inline void 756void inline_size
596adjustheap (WT *heap, int N, int k) 757adjustheap (WT *heap, int N, int k)
597{ 758{
598 upheap (heap, k); 759 upheap (heap, k);
599 downheap (heap, N, k); 760 downheap (heap, N, k);
600} 761}
… …
602/*****************************************************************************/ 763/*****************************************************************************/
603 764
604typedef struct 765typedef struct
605{ 766{
606 WL head; 767 WL head;
607 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
608} ANSIG; 769} ANSIG;
609 770
610static ANSIG *signals; 771static ANSIG *signals;
611static int signalmax; 772static int signalmax;
612 773
613static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
614static sig_atomic_t volatile gotsig;
615static struct ev_io sigev;
616 775
617static void 776void inline_size
618signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
619{ 778{
620 while (count--) 779 while (count--)
621 { 780 {
622 base->head = 0; 781 base->head = 0;
… …
624 783
625 ++base; 784 ++base;
626 } 785 }
627} 786}
628 787
629static void 788/*****************************************************************************/
630sighandler (int signum)
631{
632#if _WIN32
633 signal (signum, sighandler);
634#endif
635 789
636 signals [signum - 1].gotsig = 1; 790void inline_speed
637
638 if (!gotsig)
639 {
640 int old_errno = errno;
641 gotsig = 1;
642 write (sigpipe [1], &signum, 1);
643 errno = old_errno;
644 }
645}
646
647void
648ev_feed_signal_event (EV_P_ int signum)
649{
650 WL w;
651
652#if EV_MULTIPLICITY
653 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
654#endif
655
656 --signum;
657
658 if (signum < 0 || signum >= signalmax)
659 return;
660
661 signals [signum].gotsig = 0;
662
663 for (w = signals [signum].head; w; w = w->next)
664 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665}
666
667static void
668sigcb (EV_P_ struct ev_io *iow, int revents)
669{
670 int signum;
671
672 read (sigpipe [0], &revents, 1);
673 gotsig = 0;
674
675 for (signum = signalmax; signum--; )
676 if (signals [signum].gotsig)
677 ev_feed_signal_event (EV_A_ signum + 1);
678}
679
680static void
681fd_intern (int fd) 791fd_intern (int fd)
682{ 792{
683#ifdef _WIN32 793#ifdef _WIN32
684 int arg = 1; 794 int arg = 1;
685 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
687 fcntl (fd, F_SETFD, FD_CLOEXEC); 797 fcntl (fd, F_SETFD, FD_CLOEXEC);
688 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
689#endif 799#endif
690} 800}
691 801
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_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno; /* save errno becaue write might clobber it */
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830
831 errno = old_errno;
832 }
833}
834
692static void 835static void
693siginit (EV_P) 836pipecb (EV_P_ ev_io *iow, int revents)
694{ 837{
695 fd_intern (sigpipe [0]); 838 {
696 fd_intern (sigpipe [1]); 839 int dummy;
840 read (evpipe [0], &dummy, 1);
841 }
697 842
698 ev_io_set (&sigev, sigpipe [0], EV_READ); 843 if (gotsig && ev_is_default_loop (EV_A))
699 ev_io_start (EV_A_ &sigev); 844 {
700 ev_unref (EV_A); /* child watcher should not keep loop alive */ 845 int signum;
846 gotsig = 0;
847
848 for (signum = signalmax; signum--; )
849 if (signals [signum].gotsig)
850 ev_feed_signal_event (EV_A_ signum + 1);
851 }
852
853#if EV_ASYNC_ENABLE
854 if (gotasync)
855 {
856 int i;
857 gotasync = 0;
858
859 for (i = asynccnt; i--; )
860 if (asyncs [i]->sent)
861 {
862 asyncs [i]->sent = 0;
863 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
864 }
865 }
866#endif
701} 867}
702 868
703/*****************************************************************************/ 869/*****************************************************************************/
704 870
705static struct ev_child *childs [PID_HASHSIZE]; 871static void
872sighandler (int signum)
873{
874#if EV_MULTIPLICITY
875 struct ev_loop *loop = &default_loop_struct;
876#endif
877
878#if _WIN32
879 signal (signum, sighandler);
880#endif
881
882 signals [signum - 1].gotsig = 1;
883 evpipe_write (EV_A_ 1, 0);
884}
885
886void noinline
887ev_feed_signal_event (EV_P_ int signum)
888{
889 WL w;
890
891#if EV_MULTIPLICITY
892 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
893#endif
894
895 --signum;
896
897 if (signum < 0 || signum >= signalmax)
898 return;
899
900 signals [signum].gotsig = 0;
901
902 for (w = signals [signum].head; w; w = w->next)
903 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
904}
905
906/*****************************************************************************/
907
908static WL childs [EV_PID_HASHSIZE];
706 909
707#ifndef _WIN32 910#ifndef _WIN32
708 911
709static struct ev_signal childev; 912static ev_signal childev;
913
914#ifndef WIFCONTINUED
915# define WIFCONTINUED(status) 0
916#endif
917
918void inline_speed
919child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
920{
921 ev_child *w;
922 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923
924 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
925 {
926 if ((w->pid == pid || !w->pid)
927 && (!traced || (w->flags & 1)))
928 {
929 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
930 w->rpid = pid;
931 w->rstatus = status;
932 ev_feed_event (EV_A_ (W)w, EV_CHILD);
933 }
934 }
935}
710 936
711#ifndef WCONTINUED 937#ifndef WCONTINUED
712# define WCONTINUED 0 938# define WCONTINUED 0
713#endif 939#endif
714 940
715static void 941static void
716child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
717{
718 struct ev_child *w;
719
720 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
721 if (w->pid == pid || !w->pid)
722 {
723 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
724 w->rpid = pid;
725 w->rstatus = status;
726 ev_feed_event (EV_A_ (W)w, EV_CHILD);
727 }
728}
729
730static void
731childcb (EV_P_ struct ev_signal *sw, int revents) 942childcb (EV_P_ ev_signal *sw, int revents)
732{ 943{
733 int pid, status; 944 int pid, status;
734 945
946 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 947 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736 { 948 if (!WCONTINUED
949 || errno != EINVAL
950 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951 return;
952
737 /* make sure we are called again until all childs have been reaped */ 953 /* make sure we are called again until all childs have been reaped */
954 /* we need to do it this way so that the callback gets called before we continue */
738 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 955 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739 956
740 child_reap (EV_A_ sw, pid, pid, status); 957 child_reap (EV_A_ sw, pid, pid, status);
958 if (EV_PID_HASHSIZE > 1)
741 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 959 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742 }
743} 960}
744 961
745#endif 962#endif
746 963
747/*****************************************************************************/ 964/*****************************************************************************/
… …
773{ 990{
774 return EV_VERSION_MINOR; 991 return EV_VERSION_MINOR;
775} 992}
776 993
777/* return true if we are running with elevated privileges and should ignore env variables */ 994/* return true if we are running with elevated privileges and should ignore env variables */
778static int 995int inline_size
779enable_secure (void) 996enable_secure (void)
780{ 997{
781#ifdef _WIN32 998#ifdef _WIN32
782 return 0; 999 return 0;
783#else 1000#else
… …
785 || getgid () != getegid (); 1002 || getgid () != getegid ();
786#endif 1003#endif
787} 1004}
788 1005
789unsigned int 1006unsigned int
790ev_method (EV_P) 1007ev_supported_backends (void)
791{ 1008{
792 return method; 1009 unsigned int flags = 0;
793}
794 1010
795static void 1011 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1012 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1013 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1014 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1015 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1016
1017 return flags;
1018}
1019
1020unsigned int
1021ev_recommended_backends (void)
1022{
1023 unsigned int flags = ev_supported_backends ();
1024
1025#ifndef __NetBSD__
1026 /* kqueue is borked on everything but netbsd apparently */
1027 /* it usually doesn't work correctly on anything but sockets and pipes */
1028 flags &= ~EVBACKEND_KQUEUE;
1029#endif
1030#ifdef __APPLE__
1031 // flags &= ~EVBACKEND_KQUEUE; for documentation
1032 flags &= ~EVBACKEND_POLL;
1033#endif
1034
1035 return flags;
1036}
1037
1038unsigned int
1039ev_embeddable_backends (void)
1040{
1041 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1042
1043 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1044 /* please fix it and tell me how to detect the fix */
1045 flags &= ~EVBACKEND_EPOLL;
1046
1047 return flags;
1048}
1049
1050unsigned int
1051ev_backend (EV_P)
1052{
1053 return backend;
1054}
1055
1056unsigned int
1057ev_loop_count (EV_P)
1058{
1059 return loop_count;
1060}
1061
1062void
1063ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1064{
1065 io_blocktime = interval;
1066}
1067
1068void
1069ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1070{
1071 timeout_blocktime = interval;
1072}
1073
1074static void noinline
796loop_init (EV_P_ unsigned int flags) 1075loop_init (EV_P_ unsigned int flags)
797{ 1076{
798 if (!method) 1077 if (!backend)
799 { 1078 {
800#if EV_USE_MONOTONIC 1079#if EV_USE_MONOTONIC
801 { 1080 {
802 struct timespec ts; 1081 struct timespec ts;
803 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1082 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
804 have_monotonic = 1; 1083 have_monotonic = 1;
805 } 1084 }
806#endif 1085#endif
807 1086
808 ev_rt_now = ev_time (); 1087 ev_rt_now = ev_time ();
809 mn_now = get_clock (); 1088 mn_now = get_clock ();
810 now_floor = mn_now; 1089 now_floor = mn_now;
811 rtmn_diff = ev_rt_now - mn_now; 1090 rtmn_diff = ev_rt_now - mn_now;
812 1091
813 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1092 io_blocktime = 0.;
1093 timeout_blocktime = 0.;
1094 backend = 0;
1095 backend_fd = -1;
1096 gotasync = 0;
1097#if EV_USE_INOTIFY
1098 fs_fd = -2;
1099#endif
1100
1101 /* pid check not overridable via env */
1102#ifndef _WIN32
1103 if (flags & EVFLAG_FORKCHECK)
1104 curpid = getpid ();
1105#endif
1106
1107 if (!(flags & EVFLAG_NOENV)
1108 && !enable_secure ()
1109 && getenv ("LIBEV_FLAGS"))
814 flags = atoi (getenv ("LIBEV_FLAGS")); 1110 flags = atoi (getenv ("LIBEV_FLAGS"));
815 1111
816 if (!(flags & 0x0000ffff)) 1112 if (!(flags & 0x0000ffffUL))
817 flags |= 0x0000ffff; 1113 flags |= ev_recommended_backends ();
818 1114
819 method = 0;
820#if EV_USE_PORT 1115#if EV_USE_PORT
821 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1116 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
822#endif 1117#endif
823#if EV_USE_KQUEUE 1118#if EV_USE_KQUEUE
824 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1119 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
825#endif 1120#endif
826#if EV_USE_EPOLL 1121#if EV_USE_EPOLL
827 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1122 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
828#endif 1123#endif
829#if EV_USE_POLL 1124#if EV_USE_POLL
830 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1125 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
831#endif 1126#endif
832#if EV_USE_SELECT 1127#if EV_USE_SELECT
833 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1128 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
834#endif 1129#endif
835 1130
836 ev_init (&sigev, sigcb); 1131 ev_init (&pipeev, pipecb);
837 ev_set_priority (&sigev, EV_MAXPRI); 1132 ev_set_priority (&pipeev, EV_MAXPRI);
838 } 1133 }
839} 1134}
840 1135
841static void 1136static void noinline
842loop_destroy (EV_P) 1137loop_destroy (EV_P)
843{ 1138{
844 int i; 1139 int i;
845 1140
1141 if (ev_is_active (&pipeev))
1142 {
1143 ev_ref (EV_A); /* signal watcher */
1144 ev_io_stop (EV_A_ &pipeev);
1145
1146 close (evpipe [0]); evpipe [0] = 0;
1147 close (evpipe [1]); evpipe [1] = 0;
1148 }
1149
1150#if EV_USE_INOTIFY
1151 if (fs_fd >= 0)
1152 close (fs_fd);
1153#endif
1154
1155 if (backend_fd >= 0)
1156 close (backend_fd);
1157
846#if EV_USE_PORT 1158#if EV_USE_PORT
847 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1159 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
848#endif 1160#endif
849#if EV_USE_KQUEUE 1161#if EV_USE_KQUEUE
850 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1162 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
851#endif 1163#endif
852#if EV_USE_EPOLL 1164#if EV_USE_EPOLL
853 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1165 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
854#endif 1166#endif
855#if EV_USE_POLL 1167#if EV_USE_POLL
856 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1168 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
857#endif 1169#endif
858#if EV_USE_SELECT 1170#if EV_USE_SELECT
859 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1171 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
860#endif 1172#endif
861 1173
862 for (i = NUMPRI; i--; ) 1174 for (i = NUMPRI; i--; )
1175 {
863 array_free (pending, [i]); 1176 array_free (pending, [i]);
1177#if EV_IDLE_ENABLE
1178 array_free (idle, [i]);
1179#endif
1180 }
1181
1182 ev_free (anfds); anfdmax = 0;
864 1183
865 /* have to use the microsoft-never-gets-it-right macro */ 1184 /* have to use the microsoft-never-gets-it-right macro */
866 array_free (fdchange, EMPTY0); 1185 array_free (fdchange, EMPTY);
867 array_free (timer, EMPTY0); 1186 array_free (timer, EMPTY);
868#if EV_PERIODICS 1187#if EV_PERIODIC_ENABLE
869 array_free (periodic, EMPTY0); 1188 array_free (periodic, EMPTY);
870#endif 1189#endif
1190#if EV_FORK_ENABLE
871 array_free (idle, EMPTY0); 1191 array_free (fork, EMPTY);
1192#endif
872 array_free (prepare, EMPTY0); 1193 array_free (prepare, EMPTY);
873 array_free (check, EMPTY0); 1194 array_free (check, EMPTY);
1195#if EV_ASYNC_ENABLE
1196 array_free (async, EMPTY);
1197#endif
874 1198
875 method = 0; 1199 backend = 0;
876} 1200}
877 1201
878static void 1202void inline_size infy_fork (EV_P);
1203
1204void inline_size
879loop_fork (EV_P) 1205loop_fork (EV_P)
880{ 1206{
881#if EV_USE_PORT 1207#if EV_USE_PORT
882 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1208 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
883#endif 1209#endif
884#if EV_USE_KQUEUE 1210#if EV_USE_KQUEUE
885 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1211 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
886#endif 1212#endif
887#if EV_USE_EPOLL 1213#if EV_USE_EPOLL
888 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1214 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
889#endif 1215#endif
1216#if EV_USE_INOTIFY
1217 infy_fork (EV_A);
1218#endif
890 1219
891 if (ev_is_active (&sigev)) 1220 if (ev_is_active (&pipeev))
892 { 1221 {
893 /* default loop */ 1222 /* this "locks" the handlers against writing to the pipe */
1223 /* while we modify the fd vars */
1224 gotsig = 1;
1225#if EV_ASYNC_ENABLE
1226 gotasync = 1;
1227#endif
894 1228
895 ev_ref (EV_A); 1229 ev_ref (EV_A);
896 ev_io_stop (EV_A_ &sigev); 1230 ev_io_stop (EV_A_ &pipeev);
897 close (sigpipe [0]); 1231 close (evpipe [0]);
898 close (sigpipe [1]); 1232 close (evpipe [1]);
899 1233
900 while (pipe (sigpipe))
901 syserr ("(libev) error creating pipe");
902
903 siginit (EV_A); 1234 evpipe_init (EV_A);
1235 /* now iterate over everything, in case we missed something */
1236 pipecb (EV_A_ &pipeev, EV_READ);
904 } 1237 }
905 1238
906 postfork = 0; 1239 postfork = 0;
907} 1240}
908 1241
… …
914 1247
915 memset (loop, 0, sizeof (struct ev_loop)); 1248 memset (loop, 0, sizeof (struct ev_loop));
916 1249
917 loop_init (EV_A_ flags); 1250 loop_init (EV_A_ flags);
918 1251
919 if (ev_method (EV_A)) 1252 if (ev_backend (EV_A))
920 return loop; 1253 return loop;
921 1254
922 return 0; 1255 return 0;
923} 1256}
924 1257
… …
930} 1263}
931 1264
932void 1265void
933ev_loop_fork (EV_P) 1266ev_loop_fork (EV_P)
934{ 1267{
935 postfork = 1; 1268 postfork = 1; /* must be in line with ev_default_fork */
936} 1269}
937 1270
938#endif 1271#endif
939 1272
940#if EV_MULTIPLICITY 1273#if EV_MULTIPLICITY
… …
943#else 1276#else
944int 1277int
945ev_default_loop (unsigned int flags) 1278ev_default_loop (unsigned int flags)
946#endif 1279#endif
947{ 1280{
948 if (sigpipe [0] == sigpipe [1])
949 if (pipe (sigpipe))
950 return 0;
951
952 if (!ev_default_loop_ptr) 1281 if (!ev_default_loop_ptr)
953 { 1282 {
954#if EV_MULTIPLICITY 1283#if EV_MULTIPLICITY
955 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1284 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
956#else 1285#else
957 ev_default_loop_ptr = 1; 1286 ev_default_loop_ptr = 1;
958#endif 1287#endif
959 1288
960 loop_init (EV_A_ flags); 1289 loop_init (EV_A_ flags);
961 1290
962 if (ev_method (EV_A)) 1291 if (ev_backend (EV_A))
963 { 1292 {
964 siginit (EV_A);
965
966#ifndef _WIN32 1293#ifndef _WIN32
967 ev_signal_init (&childev, childcb, SIGCHLD); 1294 ev_signal_init (&childev, childcb, SIGCHLD);
968 ev_set_priority (&childev, EV_MAXPRI); 1295 ev_set_priority (&childev, EV_MAXPRI);
969 ev_signal_start (EV_A_ &childev); 1296 ev_signal_start (EV_A_ &childev);
970 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1297 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
987#ifndef _WIN32 1314#ifndef _WIN32
988 ev_ref (EV_A); /* child watcher */ 1315 ev_ref (EV_A); /* child watcher */
989 ev_signal_stop (EV_A_ &childev); 1316 ev_signal_stop (EV_A_ &childev);
990#endif 1317#endif
991 1318
992 ev_ref (EV_A); /* signal watcher */
993 ev_io_stop (EV_A_ &sigev);
994
995 close (sigpipe [0]); sigpipe [0] = 0;
996 close (sigpipe [1]); sigpipe [1] = 0;
997
998 loop_destroy (EV_A); 1319 loop_destroy (EV_A);
999} 1320}
1000 1321
1001void 1322void
1002ev_default_fork (void) 1323ev_default_fork (void)
1003{ 1324{
1004#if EV_MULTIPLICITY 1325#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr; 1326 struct ev_loop *loop = ev_default_loop_ptr;
1006#endif 1327#endif
1007 1328
1008 if (method) 1329 if (backend)
1009 postfork = 1; 1330 postfork = 1; /* must be in line with ev_loop_fork */
1010} 1331}
1011 1332
1012/*****************************************************************************/ 1333/*****************************************************************************/
1013 1334
1014static int 1335void
1015any_pending (EV_P) 1336ev_invoke (EV_P_ void *w, int revents)
1016{ 1337{
1017 int pri; 1338 EV_CB_INVOKE ((W)w, revents);
1018
1019 for (pri = NUMPRI; pri--; )
1020 if (pendingcnt [pri])
1021 return 1;
1022
1023 return 0;
1024} 1339}
1025 1340
1026inline void 1341void inline_speed
1027call_pending (EV_P) 1342call_pending (EV_P)
1028{ 1343{
1029 int pri; 1344 int pri;
1030 1345
1031 for (pri = NUMPRI; pri--; ) 1346 for (pri = NUMPRI; pri--; )
… …
1033 { 1348 {
1034 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1349 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1035 1350
1036 if (expect_true (p->w)) 1351 if (expect_true (p->w))
1037 { 1352 {
1353 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1354
1038 p->w->pending = 0; 1355 p->w->pending = 0;
1039 EV_CB_INVOKE (p->w, p->events); 1356 EV_CB_INVOKE (p->w, p->events);
1040 } 1357 }
1041 } 1358 }
1042} 1359}
1043 1360
1044inline void 1361void inline_size
1045timers_reify (EV_P) 1362timers_reify (EV_P)
1046{ 1363{
1047 while (timercnt && ((WT)timers [0])->at <= mn_now) 1364 while (timercnt && ((WT)timers [0])->at <= mn_now)
1048 { 1365 {
1049 struct ev_timer *w = timers [0]; 1366 ev_timer *w = (ev_timer *)timers [0];
1050 1367
1051 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1368 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1052 1369
1053 /* first reschedule or stop timer */ 1370 /* first reschedule or stop timer */
1054 if (w->repeat) 1371 if (w->repeat)
1055 { 1372 {
1056 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1373 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1057 1374
1058 ((WT)w)->at += w->repeat; 1375 ((WT)w)->at += w->repeat;
1059 if (((WT)w)->at < mn_now) 1376 if (((WT)w)->at < mn_now)
1060 ((WT)w)->at = mn_now; 1377 ((WT)w)->at = mn_now;
1061 1378
1062 downheap ((WT *)timers, timercnt, 0); 1379 downheap (timers, timercnt, 0);
1063 } 1380 }
1064 else 1381 else
1065 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1382 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1066 1383
1067 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1384 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1068 } 1385 }
1069} 1386}
1070 1387
1071#if EV_PERIODICS 1388#if EV_PERIODIC_ENABLE
1072inline void 1389void inline_size
1073periodics_reify (EV_P) 1390periodics_reify (EV_P)
1074{ 1391{
1075 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1392 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1076 { 1393 {
1077 struct ev_periodic *w = periodics [0]; 1394 ev_periodic *w = (ev_periodic *)periodics [0];
1078 1395
1079 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1396 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1080 1397
1081 /* first reschedule or stop timer */ 1398 /* first reschedule or stop timer */
1082 if (w->reschedule_cb) 1399 if (w->reschedule_cb)
1083 { 1400 {
1084 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1401 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1085 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1402 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1086 downheap ((WT *)periodics, periodiccnt, 0); 1403 downheap (periodics, periodiccnt, 0);
1087 } 1404 }
1088 else if (w->interval) 1405 else if (w->interval)
1089 { 1406 {
1090 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1407 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1408 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1091 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1409 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1092 downheap ((WT *)periodics, periodiccnt, 0); 1410 downheap (periodics, periodiccnt, 0);
1093 } 1411 }
1094 else 1412 else
1095 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1413 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1096 1414
1097 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1415 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1098 } 1416 }
1099} 1417}
1100 1418
1101static void 1419static void noinline
1102periodics_reschedule (EV_P) 1420periodics_reschedule (EV_P)
1103{ 1421{
1104 int i; 1422 int i;
1105 1423
1106 /* adjust periodics after time jump */ 1424 /* adjust periodics after time jump */
1107 for (i = 0; i < periodiccnt; ++i) 1425 for (i = 0; i < periodiccnt; ++i)
1108 { 1426 {
1109 struct ev_periodic *w = periodics [i]; 1427 ev_periodic *w = (ev_periodic *)periodics [i];
1110 1428
1111 if (w->reschedule_cb) 1429 if (w->reschedule_cb)
1112 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1430 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1113 else if (w->interval) 1431 else if (w->interval)
1114 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1432 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1115 } 1433 }
1116 1434
1117 /* now rebuild the heap */ 1435 /* now rebuild the heap */
1118 for (i = periodiccnt >> 1; i--; ) 1436 for (i = periodiccnt >> 1; i--; )
1119 downheap ((WT *)periodics, periodiccnt, i); 1437 downheap (periodics, periodiccnt, i);
1120} 1438}
1121#endif 1439#endif
1122 1440
1123inline int 1441#if EV_IDLE_ENABLE
1124time_update_monotonic (EV_P) 1442void inline_size
1443idle_reify (EV_P)
1125{ 1444{
1445 if (expect_false (idleall))
1446 {
1447 int pri;
1448
1449 for (pri = NUMPRI; pri--; )
1450 {
1451 if (pendingcnt [pri])
1452 break;
1453
1454 if (idlecnt [pri])
1455 {
1456 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1457 break;
1458 }
1459 }
1460 }
1461}
1462#endif
1463
1464void inline_speed
1465time_update (EV_P_ ev_tstamp max_block)
1466{
1467 int i;
1468
1469#if EV_USE_MONOTONIC
1470 if (expect_true (have_monotonic))
1471 {
1472 ev_tstamp odiff = rtmn_diff;
1473
1126 mn_now = get_clock (); 1474 mn_now = get_clock ();
1127 1475
1476 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1477 /* interpolate in the meantime */
1128 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1478 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1129 { 1479 {
1130 ev_rt_now = rtmn_diff + mn_now; 1480 ev_rt_now = rtmn_diff + mn_now;
1131 return 0; 1481 return;
1132 } 1482 }
1133 else 1483
1134 {
1135 now_floor = mn_now; 1484 now_floor = mn_now;
1136 ev_rt_now = ev_time (); 1485 ev_rt_now = ev_time ();
1137 return 1;
1138 }
1139}
1140 1486
1141inline void 1487 /* loop a few times, before making important decisions.
1142time_update (EV_P) 1488 * on the choice of "4": one iteration isn't enough,
1143{ 1489 * in case we get preempted during the calls to
1144 int i; 1490 * ev_time and get_clock. a second call is almost guaranteed
1145 1491 * to succeed in that case, though. and looping a few more times
1146#if EV_USE_MONOTONIC 1492 * doesn't hurt either as we only do this on time-jumps or
1147 if (expect_true (have_monotonic)) 1493 * in the unlikely event of having been preempted here.
1148 { 1494 */
1149 if (time_update_monotonic (EV_A)) 1495 for (i = 4; --i; )
1150 { 1496 {
1151 ev_tstamp odiff = rtmn_diff;
1152
1153 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1154 {
1155 rtmn_diff = ev_rt_now - mn_now; 1497 rtmn_diff = ev_rt_now - mn_now;
1156 1498
1157 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1499 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1158 return; /* all is well */ 1500 return; /* all is well */
1159 1501
1160 ev_rt_now = ev_time (); 1502 ev_rt_now = ev_time ();
1161 mn_now = get_clock (); 1503 mn_now = get_clock ();
1162 now_floor = mn_now; 1504 now_floor = mn_now;
1163 } 1505 }
1164 1506
1165# if EV_PERIODICS 1507# if EV_PERIODIC_ENABLE
1508 periodics_reschedule (EV_A);
1509# endif
1510 /* no timer adjustment, as the monotonic clock doesn't jump */
1511 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1512 }
1513 else
1514#endif
1515 {
1516 ev_rt_now = ev_time ();
1517
1518 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1519 {
1520#if EV_PERIODIC_ENABLE
1166 periodics_reschedule (EV_A); 1521 periodics_reschedule (EV_A);
1167# endif 1522#endif
1168 /* no timer adjustment, as the monotonic clock doesn't jump */
1169 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1170 }
1171 }
1172 else
1173#endif
1174 {
1175 ev_rt_now = ev_time ();
1176
1177 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1178 {
1179#if EV_PERIODICS
1180 periodics_reschedule (EV_A);
1181#endif
1182
1183 /* adjust timers. this is easy, as the offset is the same for all */ 1523 /* adjust timers. this is easy, as the offset is the same for all of them */
1184 for (i = 0; i < timercnt; ++i) 1524 for (i = 0; i < timercnt; ++i)
1185 ((WT)timers [i])->at += ev_rt_now - mn_now; 1525 ((WT)timers [i])->at += ev_rt_now - mn_now;
1186 } 1526 }
1187 1527
1188 mn_now = ev_rt_now; 1528 mn_now = ev_rt_now;
… …
1204static int loop_done; 1544static int loop_done;
1205 1545
1206void 1546void
1207ev_loop (EV_P_ int flags) 1547ev_loop (EV_P_ int flags)
1208{ 1548{
1209 double block;
1210 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1549 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1550 ? EVUNLOOP_ONE
1551 : EVUNLOOP_CANCEL;
1211 1552
1212 while (activecnt) 1553 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1554
1555 do
1213 { 1556 {
1557#ifndef _WIN32
1558 if (expect_false (curpid)) /* penalise the forking check even more */
1559 if (expect_false (getpid () != curpid))
1560 {
1561 curpid = getpid ();
1562 postfork = 1;
1563 }
1564#endif
1565
1566#if EV_FORK_ENABLE
1567 /* we might have forked, so queue fork handlers */
1568 if (expect_false (postfork))
1569 if (forkcnt)
1570 {
1571 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1572 call_pending (EV_A);
1573 }
1574#endif
1575
1214 /* queue check watchers (and execute them) */ 1576 /* queue prepare watchers (and execute them) */
1215 if (expect_false (preparecnt)) 1577 if (expect_false (preparecnt))
1216 { 1578 {
1217 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1579 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1218 call_pending (EV_A); 1580 call_pending (EV_A);
1219 } 1581 }
1220 1582
1583 if (expect_false (!activecnt))
1584 break;
1585
1221 /* we might have forked, so reify kernel state if necessary */ 1586 /* we might have forked, so reify kernel state if necessary */
1222 if (expect_false (postfork)) 1587 if (expect_false (postfork))
1223 loop_fork (EV_A); 1588 loop_fork (EV_A);
1224 1589
1225 /* update fd-related kernel structures */ 1590 /* update fd-related kernel structures */
1226 fd_reify (EV_A); 1591 fd_reify (EV_A);
1227 1592
1228 /* calculate blocking time */ 1593 /* calculate blocking time */
1594 {
1595 ev_tstamp waittime = 0.;
1596 ev_tstamp sleeptime = 0.;
1229 1597
1230 /* we only need this for !monotonic clock or timers, but as we basically 1598 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1231 always have timers, we just calculate it always */
1232#if EV_USE_MONOTONIC
1233 if (expect_true (have_monotonic))
1234 time_update_monotonic (EV_A);
1235 else
1236#endif
1237 { 1599 {
1238 ev_rt_now = ev_time (); 1600 /* update time to cancel out callback processing overhead */
1239 mn_now = ev_rt_now; 1601 time_update (EV_A_ 1e100);
1240 }
1241 1602
1242 if (flags & EVLOOP_NONBLOCK || idlecnt)
1243 block = 0.;
1244 else
1245 {
1246 block = MAX_BLOCKTIME; 1603 waittime = MAX_BLOCKTIME;
1247 1604
1248 if (timercnt) 1605 if (timercnt)
1249 { 1606 {
1250 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1607 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1251 if (block > to) block = to; 1608 if (waittime > to) waittime = to;
1252 } 1609 }
1253 1610
1254#if EV_PERIODICS 1611#if EV_PERIODIC_ENABLE
1255 if (periodiccnt) 1612 if (periodiccnt)
1256 { 1613 {
1257 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1614 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1258 if (block > to) block = to; 1615 if (waittime > to) waittime = to;
1259 } 1616 }
1260#endif 1617#endif
1261 1618
1262 if (expect_false (block < 0.)) block = 0.; 1619 if (expect_false (waittime < timeout_blocktime))
1620 waittime = timeout_blocktime;
1621
1622 sleeptime = waittime - backend_fudge;
1623
1624 if (expect_true (sleeptime > io_blocktime))
1625 sleeptime = io_blocktime;
1626
1627 if (sleeptime)
1628 {
1629 ev_sleep (sleeptime);
1630 waittime -= sleeptime;
1631 }
1263 } 1632 }
1264 1633
1265 method_poll (EV_A_ block); 1634 ++loop_count;
1635 backend_poll (EV_A_ waittime);
1266 1636
1267 /* update ev_rt_now, do magic */ 1637 /* update ev_rt_now, do magic */
1268 time_update (EV_A); 1638 time_update (EV_A_ waittime + sleeptime);
1639 }
1269 1640
1270 /* queue pending timers and reschedule them */ 1641 /* queue pending timers and reschedule them */
1271 timers_reify (EV_A); /* relative timers called last */ 1642 timers_reify (EV_A); /* relative timers called last */
1272#if EV_PERIODICS 1643#if EV_PERIODIC_ENABLE
1273 periodics_reify (EV_A); /* absolute timers called first */ 1644 periodics_reify (EV_A); /* absolute timers called first */
1274#endif 1645#endif
1275 1646
1647#if EV_IDLE_ENABLE
1276 /* queue idle watchers unless io or timers are pending */ 1648 /* queue idle watchers unless other events are pending */
1277 if (idlecnt && !any_pending (EV_A)) 1649 idle_reify (EV_A);
1278 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1650#endif
1279 1651
1280 /* queue check watchers, to be executed first */ 1652 /* queue check watchers, to be executed first */
1281 if (expect_false (checkcnt)) 1653 if (expect_false (checkcnt))
1282 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1283 1655
1284 call_pending (EV_A); 1656 call_pending (EV_A);
1285 1657
1286 if (expect_false (loop_done))
1287 break;
1288 } 1658 }
1659 while (expect_true (activecnt && !loop_done));
1289 1660
1290 if (loop_done != 2) 1661 if (loop_done == EVUNLOOP_ONE)
1291 loop_done = 0; 1662 loop_done = EVUNLOOP_CANCEL;
1292} 1663}
1293 1664
1294void 1665void
1295ev_unloop (EV_P_ int how) 1666ev_unloop (EV_P_ int how)
1296{ 1667{
1297 loop_done = how; 1668 loop_done = how;
1298} 1669}
1299 1670
1300/*****************************************************************************/ 1671/*****************************************************************************/
1301 1672
1302inline void 1673void inline_size
1303wlist_add (WL *head, WL elem) 1674wlist_add (WL *head, WL elem)
1304{ 1675{
1305 elem->next = *head; 1676 elem->next = *head;
1306 *head = elem; 1677 *head = elem;
1307} 1678}
1308 1679
1309inline void 1680void inline_size
1310wlist_del (WL *head, WL elem) 1681wlist_del (WL *head, WL elem)
1311{ 1682{
1312 while (*head) 1683 while (*head)
1313 { 1684 {
1314 if (*head == elem) 1685 if (*head == elem)
… …
1319 1690
1320 head = &(*head)->next; 1691 head = &(*head)->next;
1321 } 1692 }
1322} 1693}
1323 1694
1324inline void 1695void inline_speed
1325ev_clear_pending (EV_P_ W w) 1696clear_pending (EV_P_ W w)
1326{ 1697{
1327 if (w->pending) 1698 if (w->pending)
1328 { 1699 {
1329 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1700 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1330 w->pending = 0; 1701 w->pending = 0;
1331 } 1702 }
1332} 1703}
1333 1704
1334inline void 1705int
1706ev_clear_pending (EV_P_ void *w)
1707{
1708 W w_ = (W)w;
1709 int pending = w_->pending;
1710
1711 if (expect_true (pending))
1712 {
1713 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1714 w_->pending = 0;
1715 p->w = 0;
1716 return p->events;
1717 }
1718 else
1719 return 0;
1720}
1721
1722void inline_size
1723pri_adjust (EV_P_ W w)
1724{
1725 int pri = w->priority;
1726 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1727 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1728 w->priority = pri;
1729}
1730
1731void inline_speed
1335ev_start (EV_P_ W w, int active) 1732ev_start (EV_P_ W w, int active)
1336{ 1733{
1337 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1734 pri_adjust (EV_A_ w);
1338 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1339
1340 w->active = active; 1735 w->active = active;
1341 ev_ref (EV_A); 1736 ev_ref (EV_A);
1342} 1737}
1343 1738
1344inline void 1739void inline_size
1345ev_stop (EV_P_ W w) 1740ev_stop (EV_P_ W w)
1346{ 1741{
1347 ev_unref (EV_A); 1742 ev_unref (EV_A);
1348 w->active = 0; 1743 w->active = 0;
1349} 1744}
1350 1745
1351/*****************************************************************************/ 1746/*****************************************************************************/
1352 1747
1353void 1748void noinline
1354ev_io_start (EV_P_ struct ev_io *w) 1749ev_io_start (EV_P_ ev_io *w)
1355{ 1750{
1356 int fd = w->fd; 1751 int fd = w->fd;
1357 1752
1358 if (expect_false (ev_is_active (w))) 1753 if (expect_false (ev_is_active (w)))
1359 return; 1754 return;
1360 1755
1361 assert (("ev_io_start called with negative fd", fd >= 0)); 1756 assert (("ev_io_start called with negative fd", fd >= 0));
1362 1757
1363 ev_start (EV_A_ (W)w, 1); 1758 ev_start (EV_A_ (W)w, 1);
1364 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1759 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1365 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1760 wlist_add (&anfds[fd].head, (WL)w);
1366 1761
1367 fd_change (EV_A_ fd); 1762 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1763 w->events &= ~EV_IOFDSET;
1368} 1764}
1369 1765
1370void 1766void noinline
1371ev_io_stop (EV_P_ struct ev_io *w) 1767ev_io_stop (EV_P_ ev_io *w)
1372{ 1768{
1373 ev_clear_pending (EV_A_ (W)w); 1769 clear_pending (EV_A_ (W)w);
1374 if (expect_false (!ev_is_active (w))) 1770 if (expect_false (!ev_is_active (w)))
1375 return; 1771 return;
1376 1772
1377 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1773 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1378 1774
1379 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1775 wlist_del (&anfds[w->fd].head, (WL)w);
1380 ev_stop (EV_A_ (W)w); 1776 ev_stop (EV_A_ (W)w);
1381 1777
1382 fd_change (EV_A_ w->fd); 1778 fd_change (EV_A_ w->fd, 1);
1383} 1779}
1384 1780
1385void 1781void noinline
1386ev_timer_start (EV_P_ struct ev_timer *w) 1782ev_timer_start (EV_P_ ev_timer *w)
1387{ 1783{
1388 if (expect_false (ev_is_active (w))) 1784 if (expect_false (ev_is_active (w)))
1389 return; 1785 return;
1390 1786
1391 ((WT)w)->at += mn_now; 1787 ((WT)w)->at += mn_now;
1392 1788
1393 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1789 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1394 1790
1395 ev_start (EV_A_ (W)w, ++timercnt); 1791 ev_start (EV_A_ (W)w, ++timercnt);
1396 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1792 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1397 timers [timercnt - 1] = w; 1793 timers [timercnt - 1] = (WT)w;
1398 upheap ((WT *)timers, timercnt - 1); 1794 upheap (timers, timercnt - 1);
1399 1795
1400 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1796 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1401} 1797}
1402 1798
1403void 1799void noinline
1404ev_timer_stop (EV_P_ struct ev_timer *w) 1800ev_timer_stop (EV_P_ ev_timer *w)
1405{ 1801{
1406 ev_clear_pending (EV_A_ (W)w); 1802 clear_pending (EV_A_ (W)w);
1407 if (expect_false (!ev_is_active (w))) 1803 if (expect_false (!ev_is_active (w)))
1408 return; 1804 return;
1409 1805
1410 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1806 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1411 1807
1808 {
1809 int active = ((W)w)->active;
1810
1412 if (expect_true (((W)w)->active < timercnt--)) 1811 if (expect_true (--active < --timercnt))
1413 { 1812 {
1414 timers [((W)w)->active - 1] = timers [timercnt]; 1813 timers [active] = timers [timercnt];
1415 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1814 adjustheap (timers, timercnt, active);
1416 } 1815 }
1816 }
1417 1817
1418 ((WT)w)->at -= mn_now; 1818 ((WT)w)->at -= mn_now;
1419 1819
1420 ev_stop (EV_A_ (W)w); 1820 ev_stop (EV_A_ (W)w);
1421} 1821}
1422 1822
1423void 1823void noinline
1424ev_timer_again (EV_P_ struct ev_timer *w) 1824ev_timer_again (EV_P_ ev_timer *w)
1425{ 1825{
1426 if (ev_is_active (w)) 1826 if (ev_is_active (w))
1427 { 1827 {
1428 if (w->repeat) 1828 if (w->repeat)
1429 { 1829 {
1430 ((WT)w)->at = mn_now + w->repeat; 1830 ((WT)w)->at = mn_now + w->repeat;
1431 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1831 adjustheap (timers, timercnt, ((W)w)->active - 1);
1432 } 1832 }
1433 else 1833 else
1434 ev_timer_stop (EV_A_ w); 1834 ev_timer_stop (EV_A_ w);
1435 } 1835 }
1436 else if (w->repeat) 1836 else if (w->repeat)
… …
1438 w->at = w->repeat; 1838 w->at = w->repeat;
1439 ev_timer_start (EV_A_ w); 1839 ev_timer_start (EV_A_ w);
1440 } 1840 }
1441} 1841}
1442 1842
1443#if EV_PERIODICS 1843#if EV_PERIODIC_ENABLE
1444void 1844void noinline
1445ev_periodic_start (EV_P_ struct ev_periodic *w) 1845ev_periodic_start (EV_P_ ev_periodic *w)
1446{ 1846{
1447 if (expect_false (ev_is_active (w))) 1847 if (expect_false (ev_is_active (w)))
1448 return; 1848 return;
1449 1849
1450 if (w->reschedule_cb) 1850 if (w->reschedule_cb)
1451 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1851 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1452 else if (w->interval) 1852 else if (w->interval)
1453 { 1853 {
1454 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1854 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1455 /* this formula differs from the one in periodic_reify because we do not always round up */ 1855 /* this formula differs from the one in periodic_reify because we do not always round up */
1456 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1856 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1457 } 1857 }
1858 else
1859 ((WT)w)->at = w->offset;
1458 1860
1459 ev_start (EV_A_ (W)w, ++periodiccnt); 1861 ev_start (EV_A_ (W)w, ++periodiccnt);
1460 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1862 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1461 periodics [periodiccnt - 1] = w; 1863 periodics [periodiccnt - 1] = (WT)w;
1462 upheap ((WT *)periodics, periodiccnt - 1); 1864 upheap (periodics, periodiccnt - 1);
1463 1865
1464 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1866 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1465} 1867}
1466 1868
1467void 1869void noinline
1468ev_periodic_stop (EV_P_ struct ev_periodic *w) 1870ev_periodic_stop (EV_P_ ev_periodic *w)
1469{ 1871{
1470 ev_clear_pending (EV_A_ (W)w); 1872 clear_pending (EV_A_ (W)w);
1471 if (expect_false (!ev_is_active (w))) 1873 if (expect_false (!ev_is_active (w)))
1472 return; 1874 return;
1473 1875
1474 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1876 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1475 1877
1878 {
1879 int active = ((W)w)->active;
1880
1476 if (expect_true (((W)w)->active < periodiccnt--)) 1881 if (expect_true (--active < --periodiccnt))
1477 { 1882 {
1478 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1883 periodics [active] = periodics [periodiccnt];
1479 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1884 adjustheap (periodics, periodiccnt, active);
1480 } 1885 }
1886 }
1481 1887
1482 ev_stop (EV_A_ (W)w); 1888 ev_stop (EV_A_ (W)w);
1483} 1889}
1484 1890
1485void 1891void noinline
1486ev_periodic_again (EV_P_ struct ev_periodic *w) 1892ev_periodic_again (EV_P_ ev_periodic *w)
1487{ 1893{
1488 /* TODO: use adjustheap and recalculation */ 1894 /* TODO: use adjustheap and recalculation */
1489 ev_periodic_stop (EV_A_ w); 1895 ev_periodic_stop (EV_A_ w);
1490 ev_periodic_start (EV_A_ w); 1896 ev_periodic_start (EV_A_ w);
1491} 1897}
1492#endif 1898#endif
1493 1899
1494void
1495ev_idle_start (EV_P_ struct ev_idle *w)
1496{
1497 if (expect_false (ev_is_active (w)))
1498 return;
1499
1500 ev_start (EV_A_ (W)w, ++idlecnt);
1501 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1502 idles [idlecnt - 1] = w;
1503}
1504
1505void
1506ev_idle_stop (EV_P_ struct ev_idle *w)
1507{
1508 ev_clear_pending (EV_A_ (W)w);
1509 if (expect_false (!ev_is_active (w)))
1510 return;
1511
1512 idles [((W)w)->active - 1] = idles [--idlecnt];
1513 ev_stop (EV_A_ (W)w);
1514}
1515
1516void
1517ev_prepare_start (EV_P_ struct ev_prepare *w)
1518{
1519 if (expect_false (ev_is_active (w)))
1520 return;
1521
1522 ev_start (EV_A_ (W)w, ++preparecnt);
1523 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1524 prepares [preparecnt - 1] = w;
1525}
1526
1527void
1528ev_prepare_stop (EV_P_ struct ev_prepare *w)
1529{
1530 ev_clear_pending (EV_A_ (W)w);
1531 if (expect_false (!ev_is_active (w)))
1532 return;
1533
1534 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1535 ev_stop (EV_A_ (W)w);
1536}
1537
1538void
1539ev_check_start (EV_P_ struct ev_check *w)
1540{
1541 if (expect_false (ev_is_active (w)))
1542 return;
1543
1544 ev_start (EV_A_ (W)w, ++checkcnt);
1545 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1546 checks [checkcnt - 1] = w;
1547}
1548
1549void
1550ev_check_stop (EV_P_ struct ev_check *w)
1551{
1552 ev_clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w)))
1554 return;
1555
1556 checks [((W)w)->active - 1] = checks [--checkcnt];
1557 ev_stop (EV_A_ (W)w);
1558}
1559
1560#ifndef SA_RESTART 1900#ifndef SA_RESTART
1561# define SA_RESTART 0 1901# define SA_RESTART 0
1562#endif 1902#endif
1563 1903
1564void 1904void noinline
1565ev_signal_start (EV_P_ struct ev_signal *w) 1905ev_signal_start (EV_P_ ev_signal *w)
1566{ 1906{
1567#if EV_MULTIPLICITY 1907#if EV_MULTIPLICITY
1568 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1908 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1569#endif 1909#endif
1570 if (expect_false (ev_is_active (w))) 1910 if (expect_false (ev_is_active (w)))
1571 return; 1911 return;
1572 1912
1573 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1913 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1574 1914
1915 evpipe_init (EV_A);
1916
1917 {
1918#ifndef _WIN32
1919 sigset_t full, prev;
1920 sigfillset (&full);
1921 sigprocmask (SIG_SETMASK, &full, &prev);
1922#endif
1923
1924 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1925
1926#ifndef _WIN32
1927 sigprocmask (SIG_SETMASK, &prev, 0);
1928#endif
1929 }
1930
1575 ev_start (EV_A_ (W)w, 1); 1931 ev_start (EV_A_ (W)w, 1);
1576 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1577 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1932 wlist_add (&signals [w->signum - 1].head, (WL)w);
1578 1933
1579 if (!((WL)w)->next) 1934 if (!((WL)w)->next)
1580 { 1935 {
1581#if _WIN32 1936#if _WIN32
1582 signal (w->signum, sighandler); 1937 signal (w->signum, sighandler);
… …
1588 sigaction (w->signum, &sa, 0); 1943 sigaction (w->signum, &sa, 0);
1589#endif 1944#endif
1590 } 1945 }
1591} 1946}
1592 1947
1593void 1948void noinline
1594ev_signal_stop (EV_P_ struct ev_signal *w) 1949ev_signal_stop (EV_P_ ev_signal *w)
1595{ 1950{
1596 ev_clear_pending (EV_A_ (W)w); 1951 clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w))) 1952 if (expect_false (!ev_is_active (w)))
1598 return; 1953 return;
1599 1954
1600 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1955 wlist_del (&signals [w->signum - 1].head, (WL)w);
1601 ev_stop (EV_A_ (W)w); 1956 ev_stop (EV_A_ (W)w);
1602 1957
1603 if (!signals [w->signum - 1].head) 1958 if (!signals [w->signum - 1].head)
1604 signal (w->signum, SIG_DFL); 1959 signal (w->signum, SIG_DFL);
1605} 1960}
1606 1961
1607void 1962void
1608ev_child_start (EV_P_ struct ev_child *w) 1963ev_child_start (EV_P_ ev_child *w)
1609{ 1964{
1610#if EV_MULTIPLICITY 1965#if EV_MULTIPLICITY
1611 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1966 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1612#endif 1967#endif
1613 if (expect_false (ev_is_active (w))) 1968 if (expect_false (ev_is_active (w)))
1614 return; 1969 return;
1615 1970
1616 ev_start (EV_A_ (W)w, 1); 1971 ev_start (EV_A_ (W)w, 1);
1617 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1972 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618} 1973}
1619 1974
1620void 1975void
1621ev_child_stop (EV_P_ struct ev_child *w) 1976ev_child_stop (EV_P_ ev_child *w)
1622{ 1977{
1623 ev_clear_pending (EV_A_ (W)w); 1978 clear_pending (EV_A_ (W)w);
1624 if (expect_false (!ev_is_active (w))) 1979 if (expect_false (!ev_is_active (w)))
1625 return; 1980 return;
1626 1981
1627 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1982 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1628 ev_stop (EV_A_ (W)w); 1983 ev_stop (EV_A_ (W)w);
1629} 1984}
1630 1985
1986#if EV_STAT_ENABLE
1987
1988# ifdef _WIN32
1989# undef lstat
1990# define lstat(a,b) _stati64 (a,b)
1991# endif
1992
1993#define DEF_STAT_INTERVAL 5.0074891
1994#define MIN_STAT_INTERVAL 0.1074891
1995
1996static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1997
1998#if EV_USE_INOTIFY
1999# define EV_INOTIFY_BUFSIZE 8192
2000
2001static void noinline
2002infy_add (EV_P_ ev_stat *w)
2003{
2004 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);
2005
2006 if (w->wd < 0)
2007 {
2008 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2009
2010 /* monitor some parent directory for speedup hints */
2011 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2012 {
2013 char path [4096];
2014 strcpy (path, w->path);
2015
2016 do
2017 {
2018 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2019 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2020
2021 char *pend = strrchr (path, '/');
2022
2023 if (!pend)
2024 break; /* whoops, no '/', complain to your admin */
2025
2026 *pend = 0;
2027 w->wd = inotify_add_watch (fs_fd, path, mask);
2028 }
2029 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2030 }
2031 }
2032 else
2033 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2034
2035 if (w->wd >= 0)
2036 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2037}
2038
2039static void noinline
2040infy_del (EV_P_ ev_stat *w)
2041{
2042 int slot;
2043 int wd = w->wd;
2044
2045 if (wd < 0)
2046 return;
2047
2048 w->wd = -2;
2049 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2050 wlist_del (&fs_hash [slot].head, (WL)w);
2051
2052 /* remove this watcher, if others are watching it, they will rearm */
2053 inotify_rm_watch (fs_fd, wd);
2054}
2055
2056static void noinline
2057infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2058{
2059 if (slot < 0)
2060 /* overflow, need to check for all hahs slots */
2061 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2062 infy_wd (EV_A_ slot, wd, ev);
2063 else
2064 {
2065 WL w_;
2066
2067 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2068 {
2069 ev_stat *w = (ev_stat *)w_;
2070 w_ = w_->next; /* lets us remove this watcher and all before it */
2071
2072 if (w->wd == wd || wd == -1)
2073 {
2074 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2075 {
2076 w->wd = -1;
2077 infy_add (EV_A_ w); /* re-add, no matter what */
2078 }
2079
2080 stat_timer_cb (EV_A_ &w->timer, 0);
2081 }
2082 }
2083 }
2084}
2085
2086static void
2087infy_cb (EV_P_ ev_io *w, int revents)
2088{
2089 char buf [EV_INOTIFY_BUFSIZE];
2090 struct inotify_event *ev = (struct inotify_event *)buf;
2091 int ofs;
2092 int len = read (fs_fd, buf, sizeof (buf));
2093
2094 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2095 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2096}
2097
2098void inline_size
2099infy_init (EV_P)
2100{
2101 if (fs_fd != -2)
2102 return;
2103
2104 fs_fd = inotify_init ();
2105
2106 if (fs_fd >= 0)
2107 {
2108 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2109 ev_set_priority (&fs_w, EV_MAXPRI);
2110 ev_io_start (EV_A_ &fs_w);
2111 }
2112}
2113
2114void inline_size
2115infy_fork (EV_P)
2116{
2117 int slot;
2118
2119 if (fs_fd < 0)
2120 return;
2121
2122 close (fs_fd);
2123 fs_fd = inotify_init ();
2124
2125 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2126 {
2127 WL w_ = fs_hash [slot].head;
2128 fs_hash [slot].head = 0;
2129
2130 while (w_)
2131 {
2132 ev_stat *w = (ev_stat *)w_;
2133 w_ = w_->next; /* lets us add this watcher */
2134
2135 w->wd = -1;
2136
2137 if (fs_fd >= 0)
2138 infy_add (EV_A_ w); /* re-add, no matter what */
2139 else
2140 ev_timer_start (EV_A_ &w->timer);
2141 }
2142
2143 }
2144}
2145
2146#endif
2147
2148void
2149ev_stat_stat (EV_P_ ev_stat *w)
2150{
2151 if (lstat (w->path, &w->attr) < 0)
2152 w->attr.st_nlink = 0;
2153 else if (!w->attr.st_nlink)
2154 w->attr.st_nlink = 1;
2155}
2156
2157static void noinline
2158stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2159{
2160 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2161
2162 /* we copy this here each the time so that */
2163 /* prev has the old value when the callback gets invoked */
2164 w->prev = w->attr;
2165 ev_stat_stat (EV_A_ w);
2166
2167 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2168 if (
2169 w->prev.st_dev != w->attr.st_dev
2170 || w->prev.st_ino != w->attr.st_ino
2171 || w->prev.st_mode != w->attr.st_mode
2172 || w->prev.st_nlink != w->attr.st_nlink
2173 || w->prev.st_uid != w->attr.st_uid
2174 || w->prev.st_gid != w->attr.st_gid
2175 || w->prev.st_rdev != w->attr.st_rdev
2176 || w->prev.st_size != w->attr.st_size
2177 || w->prev.st_atime != w->attr.st_atime
2178 || w->prev.st_mtime != w->attr.st_mtime
2179 || w->prev.st_ctime != w->attr.st_ctime
2180 ) {
2181 #if EV_USE_INOTIFY
2182 infy_del (EV_A_ w);
2183 infy_add (EV_A_ w);
2184 ev_stat_stat (EV_A_ w); /* avoid race... */
2185 #endif
2186
2187 ev_feed_event (EV_A_ w, EV_STAT);
2188 }
2189}
2190
2191void
2192ev_stat_start (EV_P_ ev_stat *w)
2193{
2194 if (expect_false (ev_is_active (w)))
2195 return;
2196
2197 /* since we use memcmp, we need to clear any padding data etc. */
2198 memset (&w->prev, 0, sizeof (ev_statdata));
2199 memset (&w->attr, 0, sizeof (ev_statdata));
2200
2201 ev_stat_stat (EV_A_ w);
2202
2203 if (w->interval < MIN_STAT_INTERVAL)
2204 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2205
2206 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2207 ev_set_priority (&w->timer, ev_priority (w));
2208
2209#if EV_USE_INOTIFY
2210 infy_init (EV_A);
2211
2212 if (fs_fd >= 0)
2213 infy_add (EV_A_ w);
2214 else
2215#endif
2216 ev_timer_start (EV_A_ &w->timer);
2217
2218 ev_start (EV_A_ (W)w, 1);
2219}
2220
2221void
2222ev_stat_stop (EV_P_ ev_stat *w)
2223{
2224 clear_pending (EV_A_ (W)w);
2225 if (expect_false (!ev_is_active (w)))
2226 return;
2227
2228#if EV_USE_INOTIFY
2229 infy_del (EV_A_ w);
2230#endif
2231 ev_timer_stop (EV_A_ &w->timer);
2232
2233 ev_stop (EV_A_ (W)w);
2234}
2235#endif
2236
2237#if EV_IDLE_ENABLE
2238void
2239ev_idle_start (EV_P_ ev_idle *w)
2240{
2241 if (expect_false (ev_is_active (w)))
2242 return;
2243
2244 pri_adjust (EV_A_ (W)w);
2245
2246 {
2247 int active = ++idlecnt [ABSPRI (w)];
2248
2249 ++idleall;
2250 ev_start (EV_A_ (W)w, active);
2251
2252 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2253 idles [ABSPRI (w)][active - 1] = w;
2254 }
2255}
2256
2257void
2258ev_idle_stop (EV_P_ ev_idle *w)
2259{
2260 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w)))
2262 return;
2263
2264 {
2265 int active = ((W)w)->active;
2266
2267 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2268 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2269
2270 ev_stop (EV_A_ (W)w);
2271 --idleall;
2272 }
2273}
2274#endif
2275
2276void
2277ev_prepare_start (EV_P_ ev_prepare *w)
2278{
2279 if (expect_false (ev_is_active (w)))
2280 return;
2281
2282 ev_start (EV_A_ (W)w, ++preparecnt);
2283 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2284 prepares [preparecnt - 1] = w;
2285}
2286
2287void
2288ev_prepare_stop (EV_P_ ev_prepare *w)
2289{
2290 clear_pending (EV_A_ (W)w);
2291 if (expect_false (!ev_is_active (w)))
2292 return;
2293
2294 {
2295 int active = ((W)w)->active;
2296 prepares [active - 1] = prepares [--preparecnt];
2297 ((W)prepares [active - 1])->active = active;
2298 }
2299
2300 ev_stop (EV_A_ (W)w);
2301}
2302
2303void
2304ev_check_start (EV_P_ ev_check *w)
2305{
2306 if (expect_false (ev_is_active (w)))
2307 return;
2308
2309 ev_start (EV_A_ (W)w, ++checkcnt);
2310 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2311 checks [checkcnt - 1] = w;
2312}
2313
2314void
2315ev_check_stop (EV_P_ ev_check *w)
2316{
2317 clear_pending (EV_A_ (W)w);
2318 if (expect_false (!ev_is_active (w)))
2319 return;
2320
2321 {
2322 int active = ((W)w)->active;
2323 checks [active - 1] = checks [--checkcnt];
2324 ((W)checks [active - 1])->active = active;
2325 }
2326
2327 ev_stop (EV_A_ (W)w);
2328}
2329
2330#if EV_EMBED_ENABLE
2331void noinline
2332ev_embed_sweep (EV_P_ ev_embed *w)
2333{
2334 ev_loop (w->other, EVLOOP_NONBLOCK);
2335}
2336
2337static void
2338embed_io_cb (EV_P_ ev_io *io, int revents)
2339{
2340 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2341
2342 if (ev_cb (w))
2343 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2344 else
2345 ev_loop (w->other, EVLOOP_NONBLOCK);
2346}
2347
2348static void
2349embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2350{
2351 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2352
2353 {
2354 struct ev_loop *loop = w->other;
2355
2356 while (fdchangecnt)
2357 {
2358 fd_reify (EV_A);
2359 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2360 }
2361 }
2362}
2363
2364#if 0
2365static void
2366embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2367{
2368 ev_idle_stop (EV_A_ idle);
2369}
2370#endif
2371
2372void
2373ev_embed_start (EV_P_ ev_embed *w)
2374{
2375 if (expect_false (ev_is_active (w)))
2376 return;
2377
2378 {
2379 struct ev_loop *loop = w->other;
2380 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2381 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2382 }
2383
2384 ev_set_priority (&w->io, ev_priority (w));
2385 ev_io_start (EV_A_ &w->io);
2386
2387 ev_prepare_init (&w->prepare, embed_prepare_cb);
2388 ev_set_priority (&w->prepare, EV_MINPRI);
2389 ev_prepare_start (EV_A_ &w->prepare);
2390
2391 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2392
2393 ev_start (EV_A_ (W)w, 1);
2394}
2395
2396void
2397ev_embed_stop (EV_P_ ev_embed *w)
2398{
2399 clear_pending (EV_A_ (W)w);
2400 if (expect_false (!ev_is_active (w)))
2401 return;
2402
2403 ev_io_stop (EV_A_ &w->io);
2404 ev_prepare_stop (EV_A_ &w->prepare);
2405
2406 ev_stop (EV_A_ (W)w);
2407}
2408#endif
2409
2410#if EV_FORK_ENABLE
2411void
2412ev_fork_start (EV_P_ ev_fork *w)
2413{
2414 if (expect_false (ev_is_active (w)))
2415 return;
2416
2417 ev_start (EV_A_ (W)w, ++forkcnt);
2418 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2419 forks [forkcnt - 1] = w;
2420}
2421
2422void
2423ev_fork_stop (EV_P_ ev_fork *w)
2424{
2425 clear_pending (EV_A_ (W)w);
2426 if (expect_false (!ev_is_active (w)))
2427 return;
2428
2429 {
2430 int active = ((W)w)->active;
2431 forks [active - 1] = forks [--forkcnt];
2432 ((W)forks [active - 1])->active = active;
2433 }
2434
2435 ev_stop (EV_A_ (W)w);
2436}
2437#endif
2438
2439#if EV_ASYNC_ENABLE
2440void
2441ev_async_start (EV_P_ ev_async *w)
2442{
2443 if (expect_false (ev_is_active (w)))
2444 return;
2445
2446 evpipe_init (EV_A);
2447
2448 ev_start (EV_A_ (W)w, ++asynccnt);
2449 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2450 asyncs [asynccnt - 1] = w;
2451}
2452
2453void
2454ev_async_stop (EV_P_ ev_async *w)
2455{
2456 clear_pending (EV_A_ (W)w);
2457 if (expect_false (!ev_is_active (w)))
2458 return;
2459
2460 {
2461 int active = ((W)w)->active;
2462 asyncs [active - 1] = asyncs [--asynccnt];
2463 ((W)asyncs [active - 1])->active = active;
2464 }
2465
2466 ev_stop (EV_A_ (W)w);
2467}
2468
2469void
2470ev_async_send (EV_P_ ev_async *w)
2471{
2472 w->sent = 1;
2473 evpipe_write (EV_A_ 0, 1);
2474}
2475#endif
2476
1631/*****************************************************************************/ 2477/*****************************************************************************/
1632 2478
1633struct ev_once 2479struct ev_once
1634{ 2480{
1635 struct ev_io io; 2481 ev_io io;
1636 struct ev_timer to; 2482 ev_timer to;
1637 void (*cb)(int revents, void *arg); 2483 void (*cb)(int revents, void *arg);
1638 void *arg; 2484 void *arg;
1639}; 2485};
1640 2486
1641static void 2487static void
… …
1650 2496
1651 cb (revents, arg); 2497 cb (revents, arg);
1652} 2498}
1653 2499
1654static void 2500static void
1655once_cb_io (EV_P_ struct ev_io *w, int revents) 2501once_cb_io (EV_P_ ev_io *w, int revents)
1656{ 2502{
1657 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2503 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1658} 2504}
1659 2505
1660static void 2506static void
1661once_cb_to (EV_P_ struct ev_timer *w, int revents) 2507once_cb_to (EV_P_ ev_timer *w, int revents)
1662{ 2508{
1663 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2509 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1664} 2510}
1665 2511
1666void 2512void
… …
1690 ev_timer_set (&once->to, timeout, 0.); 2536 ev_timer_set (&once->to, timeout, 0.);
1691 ev_timer_start (EV_A_ &once->to); 2537 ev_timer_start (EV_A_ &once->to);
1692 } 2538 }
1693} 2539}
1694 2540
2541#if EV_MULTIPLICITY
2542 #include "ev_wrap.h"
2543#endif
2544
1695#ifdef __cplusplus 2545#ifdef __cplusplus
1696} 2546}
1697#endif 2547#endif
1698 2548

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