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Comparing libev/ev.c (file contents):
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC vs.
Revision 1.219 by root, Wed Apr 2 10:55:39 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
36#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
37# include "config.h" 48# include "config.h"
49# endif
38 50
39# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 52# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
42# endif 54# endif
… …
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 ((unsigned long)(delay * 1e3));
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
467
468/*****************************************************************************/
469
470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
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_ EV_ATOMIC_T *flag)
821{
822 if (!*flag)
823 {
824 int old_errno = errno; /* save errno because write might clobber it */
825
826 *flag = 1;
827 write (evpipe [1], &old_errno, 1);
828
829 errno = old_errno;
830 }
831}
832
692static void 833static void
693siginit (EV_P) 834pipecb (EV_P_ ev_io *iow, int revents)
694{ 835{
695 fd_intern (sigpipe [0]); 836 {
696 fd_intern (sigpipe [1]); 837 int dummy;
838 read (evpipe [0], &dummy, 1);
839 }
697 840
698 ev_io_set (&sigev, sigpipe [0], EV_READ); 841 if (gotsig && ev_is_default_loop (EV_A))
699 ev_io_start (EV_A_ &sigev); 842 {
700 ev_unref (EV_A); /* child watcher should not keep loop alive */ 843 int signum;
844 gotsig = 0;
845
846 for (signum = signalmax; signum--; )
847 if (signals [signum].gotsig)
848 ev_feed_signal_event (EV_A_ signum + 1);
849 }
850
851#if EV_ASYNC_ENABLE
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864#endif
701} 865}
702 866
703/*****************************************************************************/ 867/*****************************************************************************/
704 868
705static struct ev_child *childs [PID_HASHSIZE]; 869static void
870ev_sighandler (int signum)
871{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32
877 signal (signum, ev_sighandler);
878#endif
879
880 signals [signum - 1].gotsig = 1;
881 evpipe_write (EV_A_ &gotsig);
882}
883
884void noinline
885ev_feed_signal_event (EV_P_ int signum)
886{
887 WL w;
888
889#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
892
893 --signum;
894
895 if (signum < 0 || signum >= signalmax)
896 return;
897
898 signals [signum].gotsig = 0;
899
900 for (w = signals [signum].head; w; w = w->next)
901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902}
903
904/*****************************************************************************/
905
906static WL childs [EV_PID_HASHSIZE];
706 907
707#ifndef _WIN32 908#ifndef _WIN32
708 909
709static struct ev_signal childev; 910static ev_signal childev;
911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
916void inline_speed
917child_reap (EV_P_ int chain, int pid, int status)
918{
919 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921
922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
923 {
924 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1)))
926 {
927 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
928 w->rpid = pid;
929 w->rstatus = status;
930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
931 }
932 }
933}
710 934
711#ifndef WCONTINUED 935#ifndef WCONTINUED
712# define WCONTINUED 0 936# define WCONTINUED 0
713#endif 937#endif
714 938
715static void 939static 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) 940childcb (EV_P_ ev_signal *sw, int revents)
732{ 941{
733 int pid, status; 942 int pid, status;
734 943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736 { 946 if (!WCONTINUED
947 || errno != EINVAL
948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
949 return;
950
737 /* make sure we are called again until all childs have been reaped */ 951 /* make sure we are called again until all children have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */
738 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739 954
740 child_reap (EV_A_ sw, pid, pid, status); 955 child_reap (EV_A_ pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
741 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742 }
743} 958}
744 959
745#endif 960#endif
746 961
747/*****************************************************************************/ 962/*****************************************************************************/
… …
773{ 988{
774 return EV_VERSION_MINOR; 989 return EV_VERSION_MINOR;
775} 990}
776 991
777/* return true if we are running with elevated privileges and should ignore env variables */ 992/* return true if we are running with elevated privileges and should ignore env variables */
778static int 993int inline_size
779enable_secure (void) 994enable_secure (void)
780{ 995{
781#ifdef _WIN32 996#ifdef _WIN32
782 return 0; 997 return 0;
783#else 998#else
… …
785 || getgid () != getegid (); 1000 || getgid () != getegid ();
786#endif 1001#endif
787} 1002}
788 1003
789unsigned int 1004unsigned int
790ev_method (EV_P) 1005ev_supported_backends (void)
791{ 1006{
792 return method; 1007 unsigned int flags = 0;
793}
794 1008
795static void 1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1010 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1011 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1012 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1013 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014
1015 return flags;
1016}
1017
1018unsigned int
1019ev_recommended_backends (void)
1020{
1021 unsigned int flags = ev_supported_backends ();
1022
1023#ifndef __NetBSD__
1024 /* kqueue is borked on everything but netbsd apparently */
1025 /* it usually doesn't work correctly on anything but sockets and pipes */
1026 flags &= ~EVBACKEND_KQUEUE;
1027#endif
1028#ifdef __APPLE__
1029 // flags &= ~EVBACKEND_KQUEUE; for documentation
1030 flags &= ~EVBACKEND_POLL;
1031#endif
1032
1033 return flags;
1034}
1035
1036unsigned int
1037ev_embeddable_backends (void)
1038{
1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040
1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */
1043 flags &= ~EVBACKEND_EPOLL;
1044
1045 return flags;
1046}
1047
1048unsigned int
1049ev_backend (EV_P)
1050{
1051 return backend;
1052}
1053
1054unsigned int
1055ev_loop_count (EV_P)
1056{
1057 return loop_count;
1058}
1059
1060void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{
1063 io_blocktime = interval;
1064}
1065
1066void
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{
1069 timeout_blocktime = interval;
1070}
1071
1072static void noinline
796loop_init (EV_P_ unsigned int flags) 1073loop_init (EV_P_ unsigned int flags)
797{ 1074{
798 if (!method) 1075 if (!backend)
799 { 1076 {
800#if EV_USE_MONOTONIC 1077#if EV_USE_MONOTONIC
801 { 1078 {
802 struct timespec ts; 1079 struct timespec ts;
803 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
804 have_monotonic = 1; 1081 have_monotonic = 1;
805 } 1082 }
806#endif 1083#endif
807 1084
808 ev_rt_now = ev_time (); 1085 ev_rt_now = ev_time ();
809 mn_now = get_clock (); 1086 mn_now = get_clock ();
810 now_floor = mn_now; 1087 now_floor = mn_now;
811 rtmn_diff = ev_rt_now - mn_now; 1088 rtmn_diff = ev_rt_now - mn_now;
1089
1090 io_blocktime = 0.;
1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif
1098
1099 /* pid check not overridable via env */
1100#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK)
1102 curpid = getpid ();
1103#endif
812 1104
813 if (!(flags & EVFLAG_NOENV) 1105 if (!(flags & EVFLAG_NOENV)
814 && !enable_secure () 1106 && !enable_secure ()
815 && getenv ("LIBEV_FLAGS")) 1107 && getenv ("LIBEV_FLAGS"))
816 flags = atoi (getenv ("LIBEV_FLAGS")); 1108 flags = atoi (getenv ("LIBEV_FLAGS"));
817 1109
818 if (!(flags & EVMETHOD_ALL)) 1110 if (!(flags & 0x0000ffffUL))
819 { 1111 flags |= ev_recommended_backends ();
820 flags |= EVMETHOD_ALL;
821#if EV_USE_KQUEUE && !defined (__NetBSD__)
822 /* kqueue is borked on everything but netbsd apparently */
823 /* it usually doesn't work correctly on anything but sockets and pipes */
824 flags &= ~EVMETHOD_KQUEUE;
825#endif
826 }
827 1112
828 method = 0;
829#if EV_USE_PORT 1113#if EV_USE_PORT
830 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
831#endif 1115#endif
832#if EV_USE_KQUEUE 1116#if EV_USE_KQUEUE
833 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
834#endif 1118#endif
835#if EV_USE_EPOLL 1119#if EV_USE_EPOLL
836 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
837#endif 1121#endif
838#if EV_USE_POLL 1122#if EV_USE_POLL
839 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
840#endif 1124#endif
841#if EV_USE_SELECT 1125#if EV_USE_SELECT
842 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
843#endif 1127#endif
844 1128
845 ev_init (&sigev, sigcb); 1129 ev_init (&pipeev, pipecb);
846 ev_set_priority (&sigev, EV_MAXPRI); 1130 ev_set_priority (&pipeev, EV_MAXPRI);
847 } 1131 }
848} 1132}
849 1133
850static void 1134static void noinline
851loop_destroy (EV_P) 1135loop_destroy (EV_P)
852{ 1136{
853 int i; 1137 int i;
854 1138
1139 if (ev_is_active (&pipeev))
1140 {
1141 ev_ref (EV_A); /* signal watcher */
1142 ev_io_stop (EV_A_ &pipeev);
1143
1144 close (evpipe [0]); evpipe [0] = 0;
1145 close (evpipe [1]); evpipe [1] = 0;
1146 }
1147
1148#if EV_USE_INOTIFY
1149 if (fs_fd >= 0)
1150 close (fs_fd);
1151#endif
1152
1153 if (backend_fd >= 0)
1154 close (backend_fd);
1155
855#if EV_USE_PORT 1156#if EV_USE_PORT
856 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1157 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
857#endif 1158#endif
858#if EV_USE_KQUEUE 1159#if EV_USE_KQUEUE
859 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
860#endif 1161#endif
861#if EV_USE_EPOLL 1162#if EV_USE_EPOLL
862 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1163 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
863#endif 1164#endif
864#if EV_USE_POLL 1165#if EV_USE_POLL
865 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1166 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
866#endif 1167#endif
867#if EV_USE_SELECT 1168#if EV_USE_SELECT
868 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
869#endif 1170#endif
870 1171
871 for (i = NUMPRI; i--; ) 1172 for (i = NUMPRI; i--; )
1173 {
872 array_free (pending, [i]); 1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
1179
1180 ev_free (anfds); anfdmax = 0;
873 1181
874 /* have to use the microsoft-never-gets-it-right macro */ 1182 /* have to use the microsoft-never-gets-it-right macro */
875 array_free (fdchange, EMPTY0); 1183 array_free (fdchange, EMPTY);
876 array_free (timer, EMPTY0); 1184 array_free (timer, EMPTY);
877#if EV_PERIODICS 1185#if EV_PERIODIC_ENABLE
878 array_free (periodic, EMPTY0); 1186 array_free (periodic, EMPTY);
879#endif 1187#endif
1188#if EV_FORK_ENABLE
880 array_free (idle, EMPTY0); 1189 array_free (fork, EMPTY);
1190#endif
881 array_free (prepare, EMPTY0); 1191 array_free (prepare, EMPTY);
882 array_free (check, EMPTY0); 1192 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY);
1195#endif
883 1196
884 method = 0; 1197 backend = 0;
885} 1198}
886 1199
887static void 1200void inline_size infy_fork (EV_P);
1201
1202void inline_size
888loop_fork (EV_P) 1203loop_fork (EV_P)
889{ 1204{
890#if EV_USE_PORT 1205#if EV_USE_PORT
891 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1206 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
892#endif 1207#endif
893#if EV_USE_KQUEUE 1208#if EV_USE_KQUEUE
894 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1209 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
895#endif 1210#endif
896#if EV_USE_EPOLL 1211#if EV_USE_EPOLL
897 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
898#endif 1213#endif
1214#if EV_USE_INOTIFY
1215 infy_fork (EV_A);
1216#endif
899 1217
900 if (ev_is_active (&sigev)) 1218 if (ev_is_active (&pipeev))
901 { 1219 {
902 /* default loop */ 1220 /* this "locks" the handlers against writing to the pipe */
1221 /* while we modify the fd vars */
1222 gotsig = 1;
1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
903 1226
904 ev_ref (EV_A); 1227 ev_ref (EV_A);
905 ev_io_stop (EV_A_ &sigev); 1228 ev_io_stop (EV_A_ &pipeev);
906 close (sigpipe [0]); 1229 close (evpipe [0]);
907 close (sigpipe [1]); 1230 close (evpipe [1]);
908 1231
909 while (pipe (sigpipe))
910 syserr ("(libev) error creating pipe");
911
912 siginit (EV_A); 1232 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ);
913 } 1235 }
914 1236
915 postfork = 0; 1237 postfork = 0;
916} 1238}
917 1239
… …
923 1245
924 memset (loop, 0, sizeof (struct ev_loop)); 1246 memset (loop, 0, sizeof (struct ev_loop));
925 1247
926 loop_init (EV_A_ flags); 1248 loop_init (EV_A_ flags);
927 1249
928 if (ev_method (EV_A)) 1250 if (ev_backend (EV_A))
929 return loop; 1251 return loop;
930 1252
931 return 0; 1253 return 0;
932} 1254}
933 1255
… …
939} 1261}
940 1262
941void 1263void
942ev_loop_fork (EV_P) 1264ev_loop_fork (EV_P)
943{ 1265{
944 postfork = 1; 1266 postfork = 1; /* must be in line with ev_default_fork */
945} 1267}
946 1268
947#endif 1269#endif
948 1270
949#if EV_MULTIPLICITY 1271#if EV_MULTIPLICITY
… …
952#else 1274#else
953int 1275int
954ev_default_loop (unsigned int flags) 1276ev_default_loop (unsigned int flags)
955#endif 1277#endif
956{ 1278{
957 if (sigpipe [0] == sigpipe [1])
958 if (pipe (sigpipe))
959 return 0;
960
961 if (!ev_default_loop_ptr) 1279 if (!ev_default_loop_ptr)
962 { 1280 {
963#if EV_MULTIPLICITY 1281#if EV_MULTIPLICITY
964 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
965#else 1283#else
966 ev_default_loop_ptr = 1; 1284 ev_default_loop_ptr = 1;
967#endif 1285#endif
968 1286
969 loop_init (EV_A_ flags); 1287 loop_init (EV_A_ flags);
970 1288
971 if (ev_method (EV_A)) 1289 if (ev_backend (EV_A))
972 { 1290 {
973 siginit (EV_A);
974
975#ifndef _WIN32 1291#ifndef _WIN32
976 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
977 ev_set_priority (&childev, EV_MAXPRI); 1293 ev_set_priority (&childev, EV_MAXPRI);
978 ev_signal_start (EV_A_ &childev); 1294 ev_signal_start (EV_A_ &childev);
979 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
996#ifndef _WIN32 1312#ifndef _WIN32
997 ev_ref (EV_A); /* child watcher */ 1313 ev_ref (EV_A); /* child watcher */
998 ev_signal_stop (EV_A_ &childev); 1314 ev_signal_stop (EV_A_ &childev);
999#endif 1315#endif
1000 1316
1001 ev_ref (EV_A); /* signal watcher */
1002 ev_io_stop (EV_A_ &sigev);
1003
1004 close (sigpipe [0]); sigpipe [0] = 0;
1005 close (sigpipe [1]); sigpipe [1] = 0;
1006
1007 loop_destroy (EV_A); 1317 loop_destroy (EV_A);
1008} 1318}
1009 1319
1010void 1320void
1011ev_default_fork (void) 1321ev_default_fork (void)
1012{ 1322{
1013#if EV_MULTIPLICITY 1323#if EV_MULTIPLICITY
1014 struct ev_loop *loop = ev_default_loop_ptr; 1324 struct ev_loop *loop = ev_default_loop_ptr;
1015#endif 1325#endif
1016 1326
1017 if (method) 1327 if (backend)
1018 postfork = 1; 1328 postfork = 1; /* must be in line with ev_loop_fork */
1019} 1329}
1020 1330
1021/*****************************************************************************/ 1331/*****************************************************************************/
1022 1332
1023static int 1333void
1024any_pending (EV_P) 1334ev_invoke (EV_P_ void *w, int revents)
1025{ 1335{
1026 int pri; 1336 EV_CB_INVOKE ((W)w, revents);
1027
1028 for (pri = NUMPRI; pri--; )
1029 if (pendingcnt [pri])
1030 return 1;
1031
1032 return 0;
1033} 1337}
1034 1338
1035inline void 1339void inline_speed
1036call_pending (EV_P) 1340call_pending (EV_P)
1037{ 1341{
1038 int pri; 1342 int pri;
1039 1343
1040 for (pri = NUMPRI; pri--; ) 1344 for (pri = NUMPRI; pri--; )
… …
1042 { 1346 {
1043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1044 1348
1045 if (expect_true (p->w)) 1349 if (expect_true (p->w))
1046 { 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
1047 p->w->pending = 0; 1353 p->w->pending = 0;
1048 EV_CB_INVOKE (p->w, p->events); 1354 EV_CB_INVOKE (p->w, p->events);
1049 } 1355 }
1050 } 1356 }
1051} 1357}
1052 1358
1053inline void 1359void inline_size
1054timers_reify (EV_P) 1360timers_reify (EV_P)
1055{ 1361{
1056 while (timercnt && ((WT)timers [0])->at <= mn_now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
1057 { 1363 {
1058 struct ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
1059 1365
1060 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1061 1367
1062 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
1063 if (w->repeat) 1369 if (w->repeat)
1064 { 1370 {
1065 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1066 1372
1067 ((WT)w)->at += w->repeat; 1373 ((WT)w)->at += w->repeat;
1068 if (((WT)w)->at < mn_now) 1374 if (((WT)w)->at < mn_now)
1069 ((WT)w)->at = mn_now; 1375 ((WT)w)->at = mn_now;
1070 1376
1071 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
1072 } 1378 }
1073 else 1379 else
1074 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1075 1381
1076 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1077 } 1383 }
1078} 1384}
1079 1385
1080#if EV_PERIODICS 1386#if EV_PERIODIC_ENABLE
1081inline void 1387void inline_size
1082periodics_reify (EV_P) 1388periodics_reify (EV_P)
1083{ 1389{
1084 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1085 { 1391 {
1086 struct ev_periodic *w = periodics [0]; 1392 ev_periodic *w = (ev_periodic *)periodics [0];
1087 1393
1088 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1089 1395
1090 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
1091 if (w->reschedule_cb) 1397 if (w->reschedule_cb)
1092 { 1398 {
1093 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1094 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1095 downheap ((WT *)periodics, periodiccnt, 0); 1401 downheap (periodics, periodiccnt, 0);
1096 } 1402 }
1097 else if (w->interval) 1403 else if (w->interval)
1098 { 1404 {
1099 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1100 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1101 downheap ((WT *)periodics, periodiccnt, 0); 1408 downheap (periodics, periodiccnt, 0);
1102 } 1409 }
1103 else 1410 else
1104 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1105 1412
1106 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1107 } 1414 }
1108} 1415}
1109 1416
1110static void 1417static void noinline
1111periodics_reschedule (EV_P) 1418periodics_reschedule (EV_P)
1112{ 1419{
1113 int i; 1420 int i;
1114 1421
1115 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
1116 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
1117 { 1424 {
1118 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
1119 1426
1120 if (w->reschedule_cb) 1427 if (w->reschedule_cb)
1121 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1122 else if (w->interval) 1429 else if (w->interval)
1123 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1124 } 1431 }
1125 1432
1126 /* now rebuild the heap */ 1433 /* now rebuild the heap */
1127 for (i = periodiccnt >> 1; i--; ) 1434 for (i = periodiccnt >> 1; i--; )
1128 downheap ((WT *)periodics, periodiccnt, i); 1435 downheap (periodics, periodiccnt, i);
1129} 1436}
1130#endif 1437#endif
1131 1438
1132inline int 1439#if EV_IDLE_ENABLE
1133time_update_monotonic (EV_P) 1440void inline_size
1441idle_reify (EV_P)
1134{ 1442{
1443 if (expect_false (idleall))
1444 {
1445 int pri;
1446
1447 for (pri = NUMPRI; pri--; )
1448 {
1449 if (pendingcnt [pri])
1450 break;
1451
1452 if (idlecnt [pri])
1453 {
1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1455 break;
1456 }
1457 }
1458 }
1459}
1460#endif
1461
1462void inline_speed
1463time_update (EV_P_ ev_tstamp max_block)
1464{
1465 int i;
1466
1467#if EV_USE_MONOTONIC
1468 if (expect_true (have_monotonic))
1469 {
1470 ev_tstamp odiff = rtmn_diff;
1471
1135 mn_now = get_clock (); 1472 mn_now = get_clock ();
1136 1473
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1475 /* interpolate in the meantime */
1137 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1476 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1138 { 1477 {
1139 ev_rt_now = rtmn_diff + mn_now; 1478 ev_rt_now = rtmn_diff + mn_now;
1140 return 0; 1479 return;
1141 } 1480 }
1142 else 1481
1143 {
1144 now_floor = mn_now; 1482 now_floor = mn_now;
1145 ev_rt_now = ev_time (); 1483 ev_rt_now = ev_time ();
1146 return 1;
1147 }
1148}
1149 1484
1150inline void 1485 /* loop a few times, before making important decisions.
1151time_update (EV_P) 1486 * on the choice of "4": one iteration isn't enough,
1152{ 1487 * in case we get preempted during the calls to
1153 int i; 1488 * ev_time and get_clock. a second call is almost guaranteed
1154 1489 * to succeed in that case, though. and looping a few more times
1155#if EV_USE_MONOTONIC 1490 * doesn't hurt either as we only do this on time-jumps or
1156 if (expect_true (have_monotonic)) 1491 * in the unlikely event of having been preempted here.
1157 { 1492 */
1158 if (time_update_monotonic (EV_A)) 1493 for (i = 4; --i; )
1159 { 1494 {
1160 ev_tstamp odiff = rtmn_diff;
1161
1162 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1163 {
1164 rtmn_diff = ev_rt_now - mn_now; 1495 rtmn_diff = ev_rt_now - mn_now;
1165 1496
1166 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1167 return; /* all is well */ 1498 return; /* all is well */
1168 1499
1169 ev_rt_now = ev_time (); 1500 ev_rt_now = ev_time ();
1170 mn_now = get_clock (); 1501 mn_now = get_clock ();
1171 now_floor = mn_now; 1502 now_floor = mn_now;
1172 } 1503 }
1173 1504
1174# if EV_PERIODICS 1505# if EV_PERIODIC_ENABLE
1506 periodics_reschedule (EV_A);
1507# endif
1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1510 }
1511 else
1512#endif
1513 {
1514 ev_rt_now = ev_time ();
1515
1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1517 {
1518#if EV_PERIODIC_ENABLE
1175 periodics_reschedule (EV_A); 1519 periodics_reschedule (EV_A);
1176# endif 1520#endif
1177 /* no timer adjustment, as the monotonic clock doesn't jump */
1178 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1179 }
1180 }
1181 else
1182#endif
1183 {
1184 ev_rt_now = ev_time ();
1185
1186 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1187 {
1188#if EV_PERIODICS
1189 periodics_reschedule (EV_A);
1190#endif
1191
1192 /* adjust timers. this is easy, as the offset is the same for all */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
1193 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
1194 ((WT)timers [i])->at += ev_rt_now - mn_now; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
1195 } 1524 }
1196 1525
1197 mn_now = ev_rt_now; 1526 mn_now = ev_rt_now;
… …
1213static int loop_done; 1542static int loop_done;
1214 1543
1215void 1544void
1216ev_loop (EV_P_ int flags) 1545ev_loop (EV_P_ int flags)
1217{ 1546{
1218 double block; 1547 loop_done = EVUNLOOP_CANCEL;
1219 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1220 1548
1221 while (activecnt) 1549 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1550
1551 do
1222 { 1552 {
1553#ifndef _WIN32
1554 if (expect_false (curpid)) /* penalise the forking check even more */
1555 if (expect_false (getpid () != curpid))
1556 {
1557 curpid = getpid ();
1558 postfork = 1;
1559 }
1560#endif
1561
1562#if EV_FORK_ENABLE
1563 /* we might have forked, so queue fork handlers */
1564 if (expect_false (postfork))
1565 if (forkcnt)
1566 {
1567 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1568 call_pending (EV_A);
1569 }
1570#endif
1571
1223 /* queue check watchers (and execute them) */ 1572 /* queue prepare watchers (and execute them) */
1224 if (expect_false (preparecnt)) 1573 if (expect_false (preparecnt))
1225 { 1574 {
1226 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1575 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1227 call_pending (EV_A); 1576 call_pending (EV_A);
1228 } 1577 }
1229 1578
1579 if (expect_false (!activecnt))
1580 break;
1581
1230 /* we might have forked, so reify kernel state if necessary */ 1582 /* we might have forked, so reify kernel state if necessary */
1231 if (expect_false (postfork)) 1583 if (expect_false (postfork))
1232 loop_fork (EV_A); 1584 loop_fork (EV_A);
1233 1585
1234 /* update fd-related kernel structures */ 1586 /* update fd-related kernel structures */
1235 fd_reify (EV_A); 1587 fd_reify (EV_A);
1236 1588
1237 /* calculate blocking time */ 1589 /* calculate blocking time */
1590 {
1591 ev_tstamp waittime = 0.;
1592 ev_tstamp sleeptime = 0.;
1238 1593
1239 /* we only need this for !monotonic clock or timers, but as we basically 1594 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1240 always have timers, we just calculate it always */
1241#if EV_USE_MONOTONIC
1242 if (expect_true (have_monotonic))
1243 time_update_monotonic (EV_A);
1244 else
1245#endif
1246 { 1595 {
1247 ev_rt_now = ev_time (); 1596 /* update time to cancel out callback processing overhead */
1248 mn_now = ev_rt_now; 1597 time_update (EV_A_ 1e100);
1249 }
1250 1598
1251 if (flags & EVLOOP_NONBLOCK || idlecnt)
1252 block = 0.;
1253 else
1254 {
1255 block = MAX_BLOCKTIME; 1599 waittime = MAX_BLOCKTIME;
1256 1600
1257 if (timercnt) 1601 if (timercnt)
1258 { 1602 {
1259 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1603 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1260 if (block > to) block = to; 1604 if (waittime > to) waittime = to;
1261 } 1605 }
1262 1606
1263#if EV_PERIODICS 1607#if EV_PERIODIC_ENABLE
1264 if (periodiccnt) 1608 if (periodiccnt)
1265 { 1609 {
1266 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1610 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1267 if (block > to) block = to; 1611 if (waittime > to) waittime = to;
1268 } 1612 }
1269#endif 1613#endif
1270 1614
1271 if (expect_false (block < 0.)) block = 0.; 1615 if (expect_false (waittime < timeout_blocktime))
1616 waittime = timeout_blocktime;
1617
1618 sleeptime = waittime - backend_fudge;
1619
1620 if (expect_true (sleeptime > io_blocktime))
1621 sleeptime = io_blocktime;
1622
1623 if (sleeptime)
1624 {
1625 ev_sleep (sleeptime);
1626 waittime -= sleeptime;
1627 }
1272 } 1628 }
1273 1629
1274 method_poll (EV_A_ block); 1630 ++loop_count;
1631 backend_poll (EV_A_ waittime);
1275 1632
1276 /* update ev_rt_now, do magic */ 1633 /* update ev_rt_now, do magic */
1277 time_update (EV_A); 1634 time_update (EV_A_ waittime + sleeptime);
1635 }
1278 1636
1279 /* queue pending timers and reschedule them */ 1637 /* queue pending timers and reschedule them */
1280 timers_reify (EV_A); /* relative timers called last */ 1638 timers_reify (EV_A); /* relative timers called last */
1281#if EV_PERIODICS 1639#if EV_PERIODIC_ENABLE
1282 periodics_reify (EV_A); /* absolute timers called first */ 1640 periodics_reify (EV_A); /* absolute timers called first */
1283#endif 1641#endif
1284 1642
1643#if EV_IDLE_ENABLE
1285 /* queue idle watchers unless io or timers are pending */ 1644 /* queue idle watchers unless other events are pending */
1286 if (idlecnt && !any_pending (EV_A)) 1645 idle_reify (EV_A);
1287 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1646#endif
1288 1647
1289 /* queue check watchers, to be executed first */ 1648 /* queue check watchers, to be executed first */
1290 if (expect_false (checkcnt)) 1649 if (expect_false (checkcnt))
1291 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1650 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1292 1651
1293 call_pending (EV_A); 1652 call_pending (EV_A);
1294
1295 if (expect_false (loop_done))
1296 break;
1297 } 1653 }
1654 while (expect_true (
1655 activecnt
1656 && !loop_done
1657 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1658 ));
1298 1659
1299 if (loop_done != 2) 1660 if (loop_done == EVUNLOOP_ONE)
1300 loop_done = 0; 1661 loop_done = EVUNLOOP_CANCEL;
1301} 1662}
1302 1663
1303void 1664void
1304ev_unloop (EV_P_ int how) 1665ev_unloop (EV_P_ int how)
1305{ 1666{
1306 loop_done = how; 1667 loop_done = how;
1307} 1668}
1308 1669
1309/*****************************************************************************/ 1670/*****************************************************************************/
1310 1671
1311inline void 1672void inline_size
1312wlist_add (WL *head, WL elem) 1673wlist_add (WL *head, WL elem)
1313{ 1674{
1314 elem->next = *head; 1675 elem->next = *head;
1315 *head = elem; 1676 *head = elem;
1316} 1677}
1317 1678
1318inline void 1679void inline_size
1319wlist_del (WL *head, WL elem) 1680wlist_del (WL *head, WL elem)
1320{ 1681{
1321 while (*head) 1682 while (*head)
1322 { 1683 {
1323 if (*head == elem) 1684 if (*head == elem)
… …
1328 1689
1329 head = &(*head)->next; 1690 head = &(*head)->next;
1330 } 1691 }
1331} 1692}
1332 1693
1333inline void 1694void inline_speed
1334ev_clear_pending (EV_P_ W w) 1695clear_pending (EV_P_ W w)
1335{ 1696{
1336 if (w->pending) 1697 if (w->pending)
1337 { 1698 {
1338 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1699 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1339 w->pending = 0; 1700 w->pending = 0;
1340 } 1701 }
1341} 1702}
1342 1703
1343inline void 1704int
1705ev_clear_pending (EV_P_ void *w)
1706{
1707 W w_ = (W)w;
1708 int pending = w_->pending;
1709
1710 if (expect_true (pending))
1711 {
1712 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1713 w_->pending = 0;
1714 p->w = 0;
1715 return p->events;
1716 }
1717 else
1718 return 0;
1719}
1720
1721void inline_size
1722pri_adjust (EV_P_ W w)
1723{
1724 int pri = w->priority;
1725 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1726 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1727 w->priority = pri;
1728}
1729
1730void inline_speed
1344ev_start (EV_P_ W w, int active) 1731ev_start (EV_P_ W w, int active)
1345{ 1732{
1346 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1733 pri_adjust (EV_A_ w);
1347 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1348
1349 w->active = active; 1734 w->active = active;
1350 ev_ref (EV_A); 1735 ev_ref (EV_A);
1351} 1736}
1352 1737
1353inline void 1738void inline_size
1354ev_stop (EV_P_ W w) 1739ev_stop (EV_P_ W w)
1355{ 1740{
1356 ev_unref (EV_A); 1741 ev_unref (EV_A);
1357 w->active = 0; 1742 w->active = 0;
1358} 1743}
1359 1744
1360/*****************************************************************************/ 1745/*****************************************************************************/
1361 1746
1362void 1747void noinline
1363ev_io_start (EV_P_ struct ev_io *w) 1748ev_io_start (EV_P_ ev_io *w)
1364{ 1749{
1365 int fd = w->fd; 1750 int fd = w->fd;
1366 1751
1367 if (expect_false (ev_is_active (w))) 1752 if (expect_false (ev_is_active (w)))
1368 return; 1753 return;
1369 1754
1370 assert (("ev_io_start called with negative fd", fd >= 0)); 1755 assert (("ev_io_start called with negative fd", fd >= 0));
1371 1756
1372 ev_start (EV_A_ (W)w, 1); 1757 ev_start (EV_A_ (W)w, 1);
1373 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1758 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1374 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1759 wlist_add (&anfds[fd].head, (WL)w);
1375 1760
1376 fd_change (EV_A_ fd); 1761 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1762 w->events &= ~EV_IOFDSET;
1377} 1763}
1378 1764
1379void 1765void noinline
1380ev_io_stop (EV_P_ struct ev_io *w) 1766ev_io_stop (EV_P_ ev_io *w)
1381{ 1767{
1382 ev_clear_pending (EV_A_ (W)w); 1768 clear_pending (EV_A_ (W)w);
1383 if (expect_false (!ev_is_active (w))) 1769 if (expect_false (!ev_is_active (w)))
1384 return; 1770 return;
1385 1771
1386 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1772 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1387 1773
1388 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1774 wlist_del (&anfds[w->fd].head, (WL)w);
1389 ev_stop (EV_A_ (W)w); 1775 ev_stop (EV_A_ (W)w);
1390 1776
1391 fd_change (EV_A_ w->fd); 1777 fd_change (EV_A_ w->fd, 1);
1392} 1778}
1393 1779
1394void 1780void noinline
1395ev_timer_start (EV_P_ struct ev_timer *w) 1781ev_timer_start (EV_P_ ev_timer *w)
1396{ 1782{
1397 if (expect_false (ev_is_active (w))) 1783 if (expect_false (ev_is_active (w)))
1398 return; 1784 return;
1399 1785
1400 ((WT)w)->at += mn_now; 1786 ((WT)w)->at += mn_now;
1401 1787
1402 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1788 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1403 1789
1404 ev_start (EV_A_ (W)w, ++timercnt); 1790 ev_start (EV_A_ (W)w, ++timercnt);
1405 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1791 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1406 timers [timercnt - 1] = w; 1792 timers [timercnt - 1] = (WT)w;
1407 upheap ((WT *)timers, timercnt - 1); 1793 upheap (timers, timercnt - 1);
1408 1794
1409 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1795 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1410} 1796}
1411 1797
1412void 1798void noinline
1413ev_timer_stop (EV_P_ struct ev_timer *w) 1799ev_timer_stop (EV_P_ ev_timer *w)
1414{ 1800{
1415 ev_clear_pending (EV_A_ (W)w); 1801 clear_pending (EV_A_ (W)w);
1416 if (expect_false (!ev_is_active (w))) 1802 if (expect_false (!ev_is_active (w)))
1417 return; 1803 return;
1418 1804
1419 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1805 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1420 1806
1807 {
1808 int active = ((W)w)->active;
1809
1421 if (expect_true (((W)w)->active < timercnt--)) 1810 if (expect_true (--active < --timercnt))
1422 { 1811 {
1423 timers [((W)w)->active - 1] = timers [timercnt]; 1812 timers [active] = timers [timercnt];
1424 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1813 adjustheap (timers, timercnt, active);
1425 } 1814 }
1815 }
1426 1816
1427 ((WT)w)->at -= mn_now; 1817 ((WT)w)->at -= mn_now;
1428 1818
1429 ev_stop (EV_A_ (W)w); 1819 ev_stop (EV_A_ (W)w);
1430} 1820}
1431 1821
1432void 1822void noinline
1433ev_timer_again (EV_P_ struct ev_timer *w) 1823ev_timer_again (EV_P_ ev_timer *w)
1434{ 1824{
1435 if (ev_is_active (w)) 1825 if (ev_is_active (w))
1436 { 1826 {
1437 if (w->repeat) 1827 if (w->repeat)
1438 { 1828 {
1439 ((WT)w)->at = mn_now + w->repeat; 1829 ((WT)w)->at = mn_now + w->repeat;
1440 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1830 adjustheap (timers, timercnt, ((W)w)->active - 1);
1441 } 1831 }
1442 else 1832 else
1443 ev_timer_stop (EV_A_ w); 1833 ev_timer_stop (EV_A_ w);
1444 } 1834 }
1445 else if (w->repeat) 1835 else if (w->repeat)
… …
1447 w->at = w->repeat; 1837 w->at = w->repeat;
1448 ev_timer_start (EV_A_ w); 1838 ev_timer_start (EV_A_ w);
1449 } 1839 }
1450} 1840}
1451 1841
1452#if EV_PERIODICS 1842#if EV_PERIODIC_ENABLE
1453void 1843void noinline
1454ev_periodic_start (EV_P_ struct ev_periodic *w) 1844ev_periodic_start (EV_P_ ev_periodic *w)
1455{ 1845{
1456 if (expect_false (ev_is_active (w))) 1846 if (expect_false (ev_is_active (w)))
1457 return; 1847 return;
1458 1848
1459 if (w->reschedule_cb) 1849 if (w->reschedule_cb)
1460 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1850 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1461 else if (w->interval) 1851 else if (w->interval)
1462 { 1852 {
1463 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1853 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1464 /* this formula differs from the one in periodic_reify because we do not always round up */ 1854 /* this formula differs from the one in periodic_reify because we do not always round up */
1465 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1855 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1466 } 1856 }
1857 else
1858 ((WT)w)->at = w->offset;
1467 1859
1468 ev_start (EV_A_ (W)w, ++periodiccnt); 1860 ev_start (EV_A_ (W)w, ++periodiccnt);
1469 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1861 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1470 periodics [periodiccnt - 1] = w; 1862 periodics [periodiccnt - 1] = (WT)w;
1471 upheap ((WT *)periodics, periodiccnt - 1); 1863 upheap (periodics, periodiccnt - 1);
1472 1864
1473 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1865 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1474} 1866}
1475 1867
1476void 1868void noinline
1477ev_periodic_stop (EV_P_ struct ev_periodic *w) 1869ev_periodic_stop (EV_P_ ev_periodic *w)
1478{ 1870{
1479 ev_clear_pending (EV_A_ (W)w); 1871 clear_pending (EV_A_ (W)w);
1480 if (expect_false (!ev_is_active (w))) 1872 if (expect_false (!ev_is_active (w)))
1481 return; 1873 return;
1482 1874
1483 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1875 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1484 1876
1877 {
1878 int active = ((W)w)->active;
1879
1485 if (expect_true (((W)w)->active < periodiccnt--)) 1880 if (expect_true (--active < --periodiccnt))
1486 { 1881 {
1487 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1882 periodics [active] = periodics [periodiccnt];
1488 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1883 adjustheap (periodics, periodiccnt, active);
1489 } 1884 }
1885 }
1490 1886
1491 ev_stop (EV_A_ (W)w); 1887 ev_stop (EV_A_ (W)w);
1492} 1888}
1493 1889
1494void 1890void noinline
1495ev_periodic_again (EV_P_ struct ev_periodic *w) 1891ev_periodic_again (EV_P_ ev_periodic *w)
1496{ 1892{
1497 /* TODO: use adjustheap and recalculation */ 1893 /* TODO: use adjustheap and recalculation */
1498 ev_periodic_stop (EV_A_ w); 1894 ev_periodic_stop (EV_A_ w);
1499 ev_periodic_start (EV_A_ w); 1895 ev_periodic_start (EV_A_ w);
1500} 1896}
1501#endif 1897#endif
1502 1898
1503void
1504ev_idle_start (EV_P_ struct ev_idle *w)
1505{
1506 if (expect_false (ev_is_active (w)))
1507 return;
1508
1509 ev_start (EV_A_ (W)w, ++idlecnt);
1510 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1511 idles [idlecnt - 1] = w;
1512}
1513
1514void
1515ev_idle_stop (EV_P_ struct ev_idle *w)
1516{
1517 ev_clear_pending (EV_A_ (W)w);
1518 if (expect_false (!ev_is_active (w)))
1519 return;
1520
1521 idles [((W)w)->active - 1] = idles [--idlecnt];
1522 ev_stop (EV_A_ (W)w);
1523}
1524
1525void
1526ev_prepare_start (EV_P_ struct ev_prepare *w)
1527{
1528 if (expect_false (ev_is_active (w)))
1529 return;
1530
1531 ev_start (EV_A_ (W)w, ++preparecnt);
1532 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1533 prepares [preparecnt - 1] = w;
1534}
1535
1536void
1537ev_prepare_stop (EV_P_ struct ev_prepare *w)
1538{
1539 ev_clear_pending (EV_A_ (W)w);
1540 if (expect_false (!ev_is_active (w)))
1541 return;
1542
1543 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1544 ev_stop (EV_A_ (W)w);
1545}
1546
1547void
1548ev_check_start (EV_P_ struct ev_check *w)
1549{
1550 if (expect_false (ev_is_active (w)))
1551 return;
1552
1553 ev_start (EV_A_ (W)w, ++checkcnt);
1554 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1555 checks [checkcnt - 1] = w;
1556}
1557
1558void
1559ev_check_stop (EV_P_ struct ev_check *w)
1560{
1561 ev_clear_pending (EV_A_ (W)w);
1562 if (expect_false (!ev_is_active (w)))
1563 return;
1564
1565 checks [((W)w)->active - 1] = checks [--checkcnt];
1566 ev_stop (EV_A_ (W)w);
1567}
1568
1569#ifndef SA_RESTART 1899#ifndef SA_RESTART
1570# define SA_RESTART 0 1900# define SA_RESTART 0
1571#endif 1901#endif
1572 1902
1573void 1903void noinline
1574ev_signal_start (EV_P_ struct ev_signal *w) 1904ev_signal_start (EV_P_ ev_signal *w)
1575{ 1905{
1576#if EV_MULTIPLICITY 1906#if EV_MULTIPLICITY
1577 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1907 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1578#endif 1908#endif
1579 if (expect_false (ev_is_active (w))) 1909 if (expect_false (ev_is_active (w)))
1580 return; 1910 return;
1581 1911
1582 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1583 1913
1914 evpipe_init (EV_A);
1915
1916 {
1917#ifndef _WIN32
1918 sigset_t full, prev;
1919 sigfillset (&full);
1920 sigprocmask (SIG_SETMASK, &full, &prev);
1921#endif
1922
1923 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1924
1925#ifndef _WIN32
1926 sigprocmask (SIG_SETMASK, &prev, 0);
1927#endif
1928 }
1929
1584 ev_start (EV_A_ (W)w, 1); 1930 ev_start (EV_A_ (W)w, 1);
1585 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1586 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1931 wlist_add (&signals [w->signum - 1].head, (WL)w);
1587 1932
1588 if (!((WL)w)->next) 1933 if (!((WL)w)->next)
1589 { 1934 {
1590#if _WIN32 1935#if _WIN32
1591 signal (w->signum, sighandler); 1936 signal (w->signum, ev_sighandler);
1592#else 1937#else
1593 struct sigaction sa; 1938 struct sigaction sa;
1594 sa.sa_handler = sighandler; 1939 sa.sa_handler = ev_sighandler;
1595 sigfillset (&sa.sa_mask); 1940 sigfillset (&sa.sa_mask);
1596 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1941 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1597 sigaction (w->signum, &sa, 0); 1942 sigaction (w->signum, &sa, 0);
1598#endif 1943#endif
1599 } 1944 }
1600} 1945}
1601 1946
1602void 1947void noinline
1603ev_signal_stop (EV_P_ struct ev_signal *w) 1948ev_signal_stop (EV_P_ ev_signal *w)
1604{ 1949{
1605 ev_clear_pending (EV_A_ (W)w); 1950 clear_pending (EV_A_ (W)w);
1606 if (expect_false (!ev_is_active (w))) 1951 if (expect_false (!ev_is_active (w)))
1607 return; 1952 return;
1608 1953
1609 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1954 wlist_del (&signals [w->signum - 1].head, (WL)w);
1610 ev_stop (EV_A_ (W)w); 1955 ev_stop (EV_A_ (W)w);
1611 1956
1612 if (!signals [w->signum - 1].head) 1957 if (!signals [w->signum - 1].head)
1613 signal (w->signum, SIG_DFL); 1958 signal (w->signum, SIG_DFL);
1614} 1959}
1615 1960
1616void 1961void
1617ev_child_start (EV_P_ struct ev_child *w) 1962ev_child_start (EV_P_ ev_child *w)
1618{ 1963{
1619#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1620 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1965 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1621#endif 1966#endif
1622 if (expect_false (ev_is_active (w))) 1967 if (expect_false (ev_is_active (w)))
1623 return; 1968 return;
1624 1969
1625 ev_start (EV_A_ (W)w, 1); 1970 ev_start (EV_A_ (W)w, 1);
1626 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1971 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1627} 1972}
1628 1973
1629void 1974void
1630ev_child_stop (EV_P_ struct ev_child *w) 1975ev_child_stop (EV_P_ ev_child *w)
1631{ 1976{
1632 ev_clear_pending (EV_A_ (W)w); 1977 clear_pending (EV_A_ (W)w);
1633 if (expect_false (!ev_is_active (w))) 1978 if (expect_false (!ev_is_active (w)))
1634 return; 1979 return;
1635 1980
1636 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1981 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1637 ev_stop (EV_A_ (W)w); 1982 ev_stop (EV_A_ (W)w);
1638} 1983}
1639 1984
1985#if EV_STAT_ENABLE
1986
1987# ifdef _WIN32
1988# undef lstat
1989# define lstat(a,b) _stati64 (a,b)
1990# endif
1991
1992#define DEF_STAT_INTERVAL 5.0074891
1993#define MIN_STAT_INTERVAL 0.1074891
1994
1995static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1996
1997#if EV_USE_INOTIFY
1998# define EV_INOTIFY_BUFSIZE 8192
1999
2000static void noinline
2001infy_add (EV_P_ ev_stat *w)
2002{
2003 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2004
2005 if (w->wd < 0)
2006 {
2007 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2008
2009 /* monitor some parent directory for speedup hints */
2010 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2011 {
2012 char path [4096];
2013 strcpy (path, w->path);
2014
2015 do
2016 {
2017 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2018 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2019
2020 char *pend = strrchr (path, '/');
2021
2022 if (!pend)
2023 break; /* whoops, no '/', complain to your admin */
2024
2025 *pend = 0;
2026 w->wd = inotify_add_watch (fs_fd, path, mask);
2027 }
2028 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2029 }
2030 }
2031 else
2032 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2033
2034 if (w->wd >= 0)
2035 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2036}
2037
2038static void noinline
2039infy_del (EV_P_ ev_stat *w)
2040{
2041 int slot;
2042 int wd = w->wd;
2043
2044 if (wd < 0)
2045 return;
2046
2047 w->wd = -2;
2048 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2049 wlist_del (&fs_hash [slot].head, (WL)w);
2050
2051 /* remove this watcher, if others are watching it, they will rearm */
2052 inotify_rm_watch (fs_fd, wd);
2053}
2054
2055static void noinline
2056infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2057{
2058 if (slot < 0)
2059 /* overflow, need to check for all hahs slots */
2060 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2061 infy_wd (EV_A_ slot, wd, ev);
2062 else
2063 {
2064 WL w_;
2065
2066 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2067 {
2068 ev_stat *w = (ev_stat *)w_;
2069 w_ = w_->next; /* lets us remove this watcher and all before it */
2070
2071 if (w->wd == wd || wd == -1)
2072 {
2073 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2074 {
2075 w->wd = -1;
2076 infy_add (EV_A_ w); /* re-add, no matter what */
2077 }
2078
2079 stat_timer_cb (EV_A_ &w->timer, 0);
2080 }
2081 }
2082 }
2083}
2084
2085static void
2086infy_cb (EV_P_ ev_io *w, int revents)
2087{
2088 char buf [EV_INOTIFY_BUFSIZE];
2089 struct inotify_event *ev = (struct inotify_event *)buf;
2090 int ofs;
2091 int len = read (fs_fd, buf, sizeof (buf));
2092
2093 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2094 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2095}
2096
2097void inline_size
2098infy_init (EV_P)
2099{
2100 if (fs_fd != -2)
2101 return;
2102
2103 fs_fd = inotify_init ();
2104
2105 if (fs_fd >= 0)
2106 {
2107 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2108 ev_set_priority (&fs_w, EV_MAXPRI);
2109 ev_io_start (EV_A_ &fs_w);
2110 }
2111}
2112
2113void inline_size
2114infy_fork (EV_P)
2115{
2116 int slot;
2117
2118 if (fs_fd < 0)
2119 return;
2120
2121 close (fs_fd);
2122 fs_fd = inotify_init ();
2123
2124 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2125 {
2126 WL w_ = fs_hash [slot].head;
2127 fs_hash [slot].head = 0;
2128
2129 while (w_)
2130 {
2131 ev_stat *w = (ev_stat *)w_;
2132 w_ = w_->next; /* lets us add this watcher */
2133
2134 w->wd = -1;
2135
2136 if (fs_fd >= 0)
2137 infy_add (EV_A_ w); /* re-add, no matter what */
2138 else
2139 ev_timer_start (EV_A_ &w->timer);
2140 }
2141
2142 }
2143}
2144
2145#endif
2146
2147void
2148ev_stat_stat (EV_P_ ev_stat *w)
2149{
2150 if (lstat (w->path, &w->attr) < 0)
2151 w->attr.st_nlink = 0;
2152 else if (!w->attr.st_nlink)
2153 w->attr.st_nlink = 1;
2154}
2155
2156static void noinline
2157stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2158{
2159 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2160
2161 /* we copy this here each the time so that */
2162 /* prev has the old value when the callback gets invoked */
2163 w->prev = w->attr;
2164 ev_stat_stat (EV_A_ w);
2165
2166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2167 if (
2168 w->prev.st_dev != w->attr.st_dev
2169 || w->prev.st_ino != w->attr.st_ino
2170 || w->prev.st_mode != w->attr.st_mode
2171 || w->prev.st_nlink != w->attr.st_nlink
2172 || w->prev.st_uid != w->attr.st_uid
2173 || w->prev.st_gid != w->attr.st_gid
2174 || w->prev.st_rdev != w->attr.st_rdev
2175 || w->prev.st_size != w->attr.st_size
2176 || w->prev.st_atime != w->attr.st_atime
2177 || w->prev.st_mtime != w->attr.st_mtime
2178 || w->prev.st_ctime != w->attr.st_ctime
2179 ) {
2180 #if EV_USE_INOTIFY
2181 infy_del (EV_A_ w);
2182 infy_add (EV_A_ w);
2183 ev_stat_stat (EV_A_ w); /* avoid race... */
2184 #endif
2185
2186 ev_feed_event (EV_A_ w, EV_STAT);
2187 }
2188}
2189
2190void
2191ev_stat_start (EV_P_ ev_stat *w)
2192{
2193 if (expect_false (ev_is_active (w)))
2194 return;
2195
2196 /* since we use memcmp, we need to clear any padding data etc. */
2197 memset (&w->prev, 0, sizeof (ev_statdata));
2198 memset (&w->attr, 0, sizeof (ev_statdata));
2199
2200 ev_stat_stat (EV_A_ w);
2201
2202 if (w->interval < MIN_STAT_INTERVAL)
2203 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2204
2205 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2206 ev_set_priority (&w->timer, ev_priority (w));
2207
2208#if EV_USE_INOTIFY
2209 infy_init (EV_A);
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w);
2213 else
2214#endif
2215 ev_timer_start (EV_A_ &w->timer);
2216
2217 ev_start (EV_A_ (W)w, 1);
2218}
2219
2220void
2221ev_stat_stop (EV_P_ ev_stat *w)
2222{
2223 clear_pending (EV_A_ (W)w);
2224 if (expect_false (!ev_is_active (w)))
2225 return;
2226
2227#if EV_USE_INOTIFY
2228 infy_del (EV_A_ w);
2229#endif
2230 ev_timer_stop (EV_A_ &w->timer);
2231
2232 ev_stop (EV_A_ (W)w);
2233}
2234#endif
2235
2236#if EV_IDLE_ENABLE
2237void
2238ev_idle_start (EV_P_ ev_idle *w)
2239{
2240 if (expect_false (ev_is_active (w)))
2241 return;
2242
2243 pri_adjust (EV_A_ (W)w);
2244
2245 {
2246 int active = ++idlecnt [ABSPRI (w)];
2247
2248 ++idleall;
2249 ev_start (EV_A_ (W)w, active);
2250
2251 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2252 idles [ABSPRI (w)][active - 1] = w;
2253 }
2254}
2255
2256void
2257ev_idle_stop (EV_P_ ev_idle *w)
2258{
2259 clear_pending (EV_A_ (W)w);
2260 if (expect_false (!ev_is_active (w)))
2261 return;
2262
2263 {
2264 int active = ((W)w)->active;
2265
2266 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2267 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2268
2269 ev_stop (EV_A_ (W)w);
2270 --idleall;
2271 }
2272}
2273#endif
2274
2275void
2276ev_prepare_start (EV_P_ ev_prepare *w)
2277{
2278 if (expect_false (ev_is_active (w)))
2279 return;
2280
2281 ev_start (EV_A_ (W)w, ++preparecnt);
2282 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2283 prepares [preparecnt - 1] = w;
2284}
2285
2286void
2287ev_prepare_stop (EV_P_ ev_prepare *w)
2288{
2289 clear_pending (EV_A_ (W)w);
2290 if (expect_false (!ev_is_active (w)))
2291 return;
2292
2293 {
2294 int active = ((W)w)->active;
2295 prepares [active - 1] = prepares [--preparecnt];
2296 ((W)prepares [active - 1])->active = active;
2297 }
2298
2299 ev_stop (EV_A_ (W)w);
2300}
2301
2302void
2303ev_check_start (EV_P_ ev_check *w)
2304{
2305 if (expect_false (ev_is_active (w)))
2306 return;
2307
2308 ev_start (EV_A_ (W)w, ++checkcnt);
2309 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2310 checks [checkcnt - 1] = w;
2311}
2312
2313void
2314ev_check_stop (EV_P_ ev_check *w)
2315{
2316 clear_pending (EV_A_ (W)w);
2317 if (expect_false (!ev_is_active (w)))
2318 return;
2319
2320 {
2321 int active = ((W)w)->active;
2322 checks [active - 1] = checks [--checkcnt];
2323 ((W)checks [active - 1])->active = active;
2324 }
2325
2326 ev_stop (EV_A_ (W)w);
2327}
2328
2329#if EV_EMBED_ENABLE
2330void noinline
2331ev_embed_sweep (EV_P_ ev_embed *w)
2332{
2333 ev_loop (w->other, EVLOOP_NONBLOCK);
2334}
2335
2336static void
2337embed_io_cb (EV_P_ ev_io *io, int revents)
2338{
2339 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2340
2341 if (ev_cb (w))
2342 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2343 else
2344 ev_loop (w->other, EVLOOP_NONBLOCK);
2345}
2346
2347static void
2348embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2349{
2350 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2351
2352 {
2353 struct ev_loop *loop = w->other;
2354
2355 while (fdchangecnt)
2356 {
2357 fd_reify (EV_A);
2358 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2359 }
2360 }
2361}
2362
2363#if 0
2364static void
2365embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2366{
2367 ev_idle_stop (EV_A_ idle);
2368}
2369#endif
2370
2371void
2372ev_embed_start (EV_P_ ev_embed *w)
2373{
2374 if (expect_false (ev_is_active (w)))
2375 return;
2376
2377 {
2378 struct ev_loop *loop = w->other;
2379 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2380 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2381 }
2382
2383 ev_set_priority (&w->io, ev_priority (w));
2384 ev_io_start (EV_A_ &w->io);
2385
2386 ev_prepare_init (&w->prepare, embed_prepare_cb);
2387 ev_set_priority (&w->prepare, EV_MINPRI);
2388 ev_prepare_start (EV_A_ &w->prepare);
2389
2390 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2391
2392 ev_start (EV_A_ (W)w, 1);
2393}
2394
2395void
2396ev_embed_stop (EV_P_ ev_embed *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 ev_io_stop (EV_A_ &w->io);
2403 ev_prepare_stop (EV_A_ &w->prepare);
2404
2405 ev_stop (EV_A_ (W)w);
2406}
2407#endif
2408
2409#if EV_FORK_ENABLE
2410void
2411ev_fork_start (EV_P_ ev_fork *w)
2412{
2413 if (expect_false (ev_is_active (w)))
2414 return;
2415
2416 ev_start (EV_A_ (W)w, ++forkcnt);
2417 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2418 forks [forkcnt - 1] = w;
2419}
2420
2421void
2422ev_fork_stop (EV_P_ ev_fork *w)
2423{
2424 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w)))
2426 return;
2427
2428 {
2429 int active = ((W)w)->active;
2430 forks [active - 1] = forks [--forkcnt];
2431 ((W)forks [active - 1])->active = active;
2432 }
2433
2434 ev_stop (EV_A_ (W)w);
2435}
2436#endif
2437
2438#if EV_ASYNC_ENABLE
2439void
2440ev_async_start (EV_P_ ev_async *w)
2441{
2442 if (expect_false (ev_is_active (w)))
2443 return;
2444
2445 evpipe_init (EV_A);
2446
2447 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w;
2450}
2451
2452void
2453ev_async_stop (EV_P_ ev_async *w)
2454{
2455 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w)))
2457 return;
2458
2459 {
2460 int active = ((W)w)->active;
2461 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active;
2463 }
2464
2465 ev_stop (EV_A_ (W)w);
2466}
2467
2468void
2469ev_async_send (EV_P_ ev_async *w)
2470{
2471 w->sent = 1;
2472 evpipe_write (EV_A_ &gotasync);
2473}
2474#endif
2475
1640/*****************************************************************************/ 2476/*****************************************************************************/
1641 2477
1642struct ev_once 2478struct ev_once
1643{ 2479{
1644 struct ev_io io; 2480 ev_io io;
1645 struct ev_timer to; 2481 ev_timer to;
1646 void (*cb)(int revents, void *arg); 2482 void (*cb)(int revents, void *arg);
1647 void *arg; 2483 void *arg;
1648}; 2484};
1649 2485
1650static void 2486static void
… …
1659 2495
1660 cb (revents, arg); 2496 cb (revents, arg);
1661} 2497}
1662 2498
1663static void 2499static void
1664once_cb_io (EV_P_ struct ev_io *w, int revents) 2500once_cb_io (EV_P_ ev_io *w, int revents)
1665{ 2501{
1666 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2502 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1667} 2503}
1668 2504
1669static void 2505static void
1670once_cb_to (EV_P_ struct ev_timer *w, int revents) 2506once_cb_to (EV_P_ ev_timer *w, int revents)
1671{ 2507{
1672 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2508 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1673} 2509}
1674 2510
1675void 2511void
… …
1699 ev_timer_set (&once->to, timeout, 0.); 2535 ev_timer_set (&once->to, timeout, 0.);
1700 ev_timer_start (EV_A_ &once->to); 2536 ev_timer_start (EV_A_ &once->to);
1701 } 2537 }
1702} 2538}
1703 2539
2540#if EV_MULTIPLICITY
2541 #include "ev_wrap.h"
2542#endif
2543
1704#ifdef __cplusplus 2544#ifdef __cplusplus
1705} 2545}
1706#endif 2546#endif
1707 2547

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