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Comparing libev/ev.c (file contents):
Revision 1.122 by root, Sat Nov 17 02:00:48 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 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
43# ifndef EV_USE_REALTIME 55# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 56# define EV_USE_REALTIME 1
45# endif 57# endif
58# else
59# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0
61# endif
62# ifndef EV_USE_REALTIME
63# define EV_USE_REALTIME 0
64# endif
46# endif 65# endif
47 66
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
50# endif 73# endif
51 74
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
54# endif 81# endif
55 82
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
58# endif 89# endif
59 90
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 93# define EV_USE_EPOLL 1
94# else
95# define EV_USE_EPOLL 0
96# endif
62# endif 97# endif
63 98
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 99# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif
105# endif
106
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE
65# define EV_USE_PORT 1 109# define EV_USE_PORT 1
110# else
111# define EV_USE_PORT 0
112# endif
113# endif
114
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1
118# else
119# define EV_USE_INOTIFY 0
120# endif
66# endif 121# endif
67 122
68#endif 123#endif
69 124
70#include <math.h> 125#include <math.h>
… …
79#include <sys/types.h> 134#include <sys/types.h>
80#include <time.h> 135#include <time.h>
81 136
82#include <signal.h> 137#include <signal.h>
83 138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
84#ifndef _WIN32 145#ifndef _WIN32
85# include <unistd.h>
86# include <sys/time.h> 146# include <sys/time.h>
87# include <sys/wait.h> 147# include <sys/wait.h>
148# include <unistd.h>
88#else 149#else
89# define WIN32_LEAN_AND_MEAN 150# define WIN32_LEAN_AND_MEAN
90# include <windows.h> 151# include <windows.h>
91# ifndef EV_SELECT_IS_WINSOCKET 152# ifndef EV_SELECT_IS_WINSOCKET
92# define EV_SELECT_IS_WINSOCKET 1 153# define EV_SELECT_IS_WINSOCKET 1
… …
101 162
102#ifndef EV_USE_REALTIME 163#ifndef EV_USE_REALTIME
103# define EV_USE_REALTIME 0 164# define EV_USE_REALTIME 0
104#endif 165#endif
105 166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
106#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
107# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
108#endif 173#endif
109 174
110#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
… …
125 190
126#ifndef EV_USE_PORT 191#ifndef EV_USE_PORT
127# define EV_USE_PORT 0 192# define EV_USE_PORT 0
128#endif 193#endif
129 194
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
130/**/ 215/**/
131
132/* darwin simply cannot be helped */
133#ifdef __APPLE__
134# undef EV_USE_POLL
135# undef EV_USE_KQUEUE
136#endif
137 216
138#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
139# undef EV_USE_MONOTONIC 218# undef EV_USE_MONOTONIC
140# define EV_USE_MONOTONIC 0 219# define EV_USE_MONOTONIC 0
141#endif 220#endif
… …
143#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
144# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
145# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
146#endif 225#endif
147 226
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
148#if EV_SELECT_IS_WINSOCKET 242#if EV_SELECT_IS_WINSOCKET
149# include <winsock.h> 243# include <winsock.h>
150#endif 244#endif
151 245
152/**/ 246/**/
153 247
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
154#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) */
155#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) */
156#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
157/*#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 */
158 261
159#ifdef EV_H
160# include EV_H
161#else
162# include "ev.h"
163#endif
164
165#if __GNUC__ >= 3 262#if __GNUC__ >= 4
166# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
167# define inline inline 264# define noinline __attribute__ ((noinline))
168#else 265#else
169# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
170# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
171#endif 271#endif
172 272
173#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
174#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
175 282
176#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
177#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
178 285
179#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 286#define EMPTY /* required for microsofts broken pseudo-c compiler */
180#define EMPTY2(a,b) /* used to suppress some warnings */ 287#define EMPTY2(a,b) /* used to suppress some warnings */
181 288
182typedef struct ev_watcher *W; 289typedef ev_watcher *W;
183typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
184typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
185 292
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 */
186static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
187 298
188#ifdef _WIN32 299#ifdef _WIN32
189# include "ev_win32.c" 300# include "ev_win32.c"
190#endif 301#endif
191 302
192/*****************************************************************************/ 303/*****************************************************************************/
193 304
194static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
195 306
307void
196void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
197{ 309{
198 syserr_cb = cb; 310 syserr_cb = cb;
199} 311}
200 312
201static void 313static void noinline
202syserr (const char *msg) 314syserr (const char *msg)
203{ 315{
204 if (!msg) 316 if (!msg)
205 msg = "(libev) system error"; 317 msg = "(libev) system error";
206 318
… …
213 } 325 }
214} 326}
215 327
216static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
217 329
330void
218void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
219{ 332{
220 alloc = cb; 333 alloc = cb;
221} 334}
222 335
223static void * 336inline_speed void *
224ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
225{ 338{
226 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
227 340
228 if (!ptr && size) 341 if (!ptr && size)
… …
252typedef struct 365typedef struct
253{ 366{
254 W w; 367 W w;
255 int events; 368 int events;
256} ANPENDING; 369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
257 377
258#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
259 379
260 struct ev_loop 380 struct ev_loop
261 { 381 {
… …
295 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
296 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
297#endif 417#endif
298} 418}
299 419
300inline ev_tstamp 420ev_tstamp inline_size
301get_clock (void) 421get_clock (void)
302{ 422{
303#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
304 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
305 { 425 {
… …
318{ 438{
319 return ev_rt_now; 439 return ev_rt_now;
320} 440}
321#endif 441#endif
322 442
323#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}
324 497
325#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
326 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
327 { \ 500 { \
328 int newcnt = cur; \ 501 int ocur_ = (cur); \
329 do \ 502 (base) = (type *)array_realloc \
330 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
331 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
332 } \
333 while ((cnt) > newcnt); \
334 \
335 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
336 init (base + cur, newcnt - cur); \
337 cur = newcnt; \
338 } 505 }
339 506
507#if 0
340#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
342 { \ 510 { \
343 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
344 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
346 } 514 }
515#endif
347 516
348#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
349 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;
350 519
351/*****************************************************************************/ 520/*****************************************************************************/
352 521
353static 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
354anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
355{ 552{
356 while (count--) 553 while (count--)
357 { 554 {
358 base->head = 0; 555 base->head = 0;
… …
361 558
362 ++base; 559 ++base;
363 } 560 }
364} 561}
365 562
366void 563void inline_speed
367ev_feed_event (EV_P_ void *w, int revents)
368{
369 W w_ = (W)w;
370
371 if (w_->pending)
372 {
373 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
374 return;
375 }
376
377 w_->pending = ++pendingcnt [ABSPRI (w_)];
378 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
379 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
380 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
381}
382
383static void
384queue_events (EV_P_ W *events, int eventcnt, int type)
385{
386 int i;
387
388 for (i = 0; i < eventcnt; ++i)
389 ev_feed_event (EV_A_ events [i], type);
390}
391
392inline void
393fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
394{ 565{
395 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
396 struct ev_io *w; 567 ev_io *w;
397 568
398 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)
399 { 570 {
400 int ev = w->events & revents; 571 int ev = w->events & revents;
401 572
402 if (ev) 573 if (ev)
403 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
405} 576}
406 577
407void 578void
408ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
409{ 580{
581 if (fd >= 0 && fd < anfdmax)
410 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
411} 583}
412 584
413/*****************************************************************************/ 585void inline_size
414
415static void
416fd_reify (EV_P) 586fd_reify (EV_P)
417{ 587{
418 int i; 588 int i;
419 589
420 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
421 { 591 {
422 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
423 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 594 ev_io *w;
425 595
426 int events = 0; 596 unsigned char events = 0;
427 597
428 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)
429 events |= w->events; 599 events |= (unsigned char)w->events;
430 600
431#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
432 if (events) 602 if (events)
433 { 603 {
434 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
435 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
436 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));
437 } 611 }
438#endif 612#endif
439 613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
440 anfd->reify = 0; 618 anfd->reify = 0;
441
442 method_modify (EV_A_ fd, anfd->events, events);
443 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 }
444 } 624 }
445 625
446 fdchangecnt = 0; 626 fdchangecnt = 0;
447} 627}
448 628
449static void 629void inline_size
450fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
451{ 631{
452 if (anfds [fd].reify) 632 unsigned char reify = anfds [fd].reify;
453 return;
454
455 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
456 634
635 if (expect_true (!reify))
636 {
457 ++fdchangecnt; 637 ++fdchangecnt;
458 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
459 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
460} 641}
461 642
462static void 643void inline_speed
463fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
464{ 645{
465 struct ev_io *w; 646 ev_io *w;
466 647
467 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
468 { 649 {
469 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
470 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);
471 } 652 }
472} 653}
473 654
474static int 655int inline_size
475fd_valid (int fd) 656fd_valid (int fd)
476{ 657{
477#ifdef _WIN32 658#ifdef _WIN32
478 return _get_osfhandle (fd) != -1; 659 return _get_osfhandle (fd) != -1;
479#else 660#else
480 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
481#endif 662#endif
482} 663}
483 664
484/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
485static void 666static void noinline
486fd_ebadf (EV_P) 667fd_ebadf (EV_P)
487{ 668{
488 int fd; 669 int fd;
489 670
490 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
492 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
493 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
494} 675}
495 676
496/* 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 */
497static void 678static void noinline
498fd_enomem (EV_P) 679fd_enomem (EV_P)
499{ 680{
500 int fd; 681 int fd;
501 682
502 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
505 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
506 return; 687 return;
507 } 688 }
508} 689}
509 690
510/* 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 */
511static void 692static void noinline
512fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
513{ 694{
514 int fd; 695 int fd;
515 696
516 /* this should be highly optimised to not do anything but set a flag */
517 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
518 if (anfds [fd].events) 698 if (anfds [fd].events)
519 { 699 {
520 anfds [fd].events = 0; 700 anfds [fd].events = 0;
521 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
522 } 702 }
523} 703}
524 704
525/*****************************************************************************/ 705/*****************************************************************************/
526 706
527static void 707void inline_speed
528upheap (WT *heap, int k) 708upheap (WT *heap, int k)
529{ 709{
530 WT w = heap [k]; 710 WT w = heap [k];
531 711
532 while (k && heap [k >> 1]->at > w->at) 712 while (k)
533 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
534 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
535 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
536 k >>= 1; 721 k = p;
537 } 722 }
538 723
539 heap [k] = w; 724 heap [k] = w;
540 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
541
542} 726}
543 727
544static void 728void inline_speed
545downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
546{ 730{
547 WT w = heap [k]; 731 WT w = heap [k];
548 732
549 while (k < (N >> 1)) 733 for (;;)
550 { 734 {
551 int j = k << 1; 735 int c = (k << 1) + 1;
552 736
553 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
554 ++j;
555
556 if (w->at <= heap [j]->at)
557 break; 738 break;
558 739
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
559 heap [k] = heap [j]; 746 heap [k] = heap [c];
560 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
561 k = j; 749 k = c;
562 } 750 }
563 751
564 heap [k] = w; 752 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
566} 754}
567 755
568inline void 756void inline_size
569adjustheap (WT *heap, int N, int k) 757adjustheap (WT *heap, int N, int k)
570{ 758{
571 upheap (heap, k); 759 upheap (heap, k);
572 downheap (heap, N, k); 760 downheap (heap, N, k);
573} 761}
… …
575/*****************************************************************************/ 763/*****************************************************************************/
576 764
577typedef struct 765typedef struct
578{ 766{
579 WL head; 767 WL head;
580 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
581} ANSIG; 769} ANSIG;
582 770
583static ANSIG *signals; 771static ANSIG *signals;
584static int signalmax; 772static int signalmax;
585 773
586static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
587static sig_atomic_t volatile gotsig;
588static struct ev_io sigev;
589 775
590static void 776void inline_size
591signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
592{ 778{
593 while (count--) 779 while (count--)
594 { 780 {
595 base->head = 0; 781 base->head = 0;
… …
597 783
598 ++base; 784 ++base;
599 } 785 }
600} 786}
601 787
602static void 788/*****************************************************************************/
603sighandler (int signum)
604{
605#if _WIN32
606 signal (signum, sighandler);
607#endif
608 789
609 signals [signum - 1].gotsig = 1; 790void inline_speed
610
611 if (!gotsig)
612 {
613 int old_errno = errno;
614 gotsig = 1;
615 write (sigpipe [1], &signum, 1);
616 errno = old_errno;
617 }
618}
619
620void
621ev_feed_signal_event (EV_P_ int signum)
622{
623 WL w;
624
625#if EV_MULTIPLICITY
626 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
627#endif
628
629 --signum;
630
631 if (signum < 0 || signum >= signalmax)
632 return;
633
634 signals [signum].gotsig = 0;
635
636 for (w = signals [signum].head; w; w = w->next)
637 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
638}
639
640static void
641sigcb (EV_P_ struct ev_io *iow, int revents)
642{
643 int signum;
644
645 read (sigpipe [0], &revents, 1);
646 gotsig = 0;
647
648 for (signum = signalmax; signum--; )
649 if (signals [signum].gotsig)
650 ev_feed_signal_event (EV_A_ signum + 1);
651}
652
653inline void
654fd_intern (int fd) 791fd_intern (int fd)
655{ 792{
656#ifdef _WIN32 793#ifdef _WIN32
657 int arg = 1; 794 int arg = 1;
658 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
660 fcntl (fd, F_SETFD, FD_CLOEXEC); 797 fcntl (fd, F_SETFD, FD_CLOEXEC);
661 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
662#endif 799#endif
663} 800}
664 801
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); /* child 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;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
665static void 834static void
666siginit (EV_P) 835pipecb (EV_P_ ev_io *iow, int revents)
667{ 836{
668 fd_intern (sigpipe [0]); 837 {
669 fd_intern (sigpipe [1]); 838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
670 841
671 ev_io_set (&sigev, sigpipe [0], EV_READ); 842 if (gotsig)
672 ev_io_start (EV_A_ &sigev); 843 {
673 ev_unref (EV_A); /* child watcher should not keep loop alive */ 844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
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 }
674} 864}
675 865
676/*****************************************************************************/ 866/*****************************************************************************/
677 867
678static struct ev_child *childs [PID_HASHSIZE]; 868static void
869sighandler (int signum)
870{
871#if EV_MULTIPLICITY
872 struct ev_loop *loop = &default_loop_struct;
873#endif
874
875#if _WIN32
876 signal (signum, sighandler);
877#endif
878
879 signals [signum - 1].gotsig = 1;
880 evpipe_write (EV_A_ 1, 0);
881}
882
883void noinline
884ev_feed_signal_event (EV_P_ int signum)
885{
886 WL w;
887
888#if EV_MULTIPLICITY
889 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
890#endif
891
892 --signum;
893
894 if (signum < 0 || signum >= signalmax)
895 return;
896
897 signals [signum].gotsig = 0;
898
899 for (w = signals [signum].head; w; w = w->next)
900 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
901}
902
903/*****************************************************************************/
904
905static WL childs [EV_PID_HASHSIZE];
679 906
680#ifndef _WIN32 907#ifndef _WIN32
681 908
682static struct ev_signal childev; 909static ev_signal childev;
910
911#ifndef WIFCONTINUED
912# define WIFCONTINUED(status) 0
913#endif
914
915void inline_speed
916child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
917{
918 ev_child *w;
919 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
920
921 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
922 {
923 if ((w->pid == pid || !w->pid)
924 && (!traced || (w->flags & 1)))
925 {
926 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
927 w->rpid = pid;
928 w->rstatus = status;
929 ev_feed_event (EV_A_ (W)w, EV_CHILD);
930 }
931 }
932}
683 933
684#ifndef WCONTINUED 934#ifndef WCONTINUED
685# define WCONTINUED 0 935# define WCONTINUED 0
686#endif 936#endif
687 937
688static void 938static void
689child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
690{
691 struct ev_child *w;
692
693 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
694 if (w->pid == pid || !w->pid)
695 {
696 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
697 w->rpid = pid;
698 w->rstatus = status;
699 ev_feed_event (EV_A_ (W)w, EV_CHILD);
700 }
701}
702
703static void
704childcb (EV_P_ struct ev_signal *sw, int revents) 939childcb (EV_P_ ev_signal *sw, int revents)
705{ 940{
706 int pid, status; 941 int pid, status;
707 942
943 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
708 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 944 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
709 { 945 if (!WCONTINUED
946 || errno != EINVAL
947 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
948 return;
949
710 /* make sure we are called again until all childs have been reaped */ 950 /* make sure we are called again until all childs have been reaped */
951 /* we need to do it this way so that the callback gets called before we continue */
711 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 952 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
712 953
713 child_reap (EV_A_ sw, pid, pid, status); 954 child_reap (EV_A_ sw, pid, pid, status);
955 if (EV_PID_HASHSIZE > 1)
714 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 956 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
715 }
716} 957}
717 958
718#endif 959#endif
719 960
720/*****************************************************************************/ 961/*****************************************************************************/
… …
746{ 987{
747 return EV_VERSION_MINOR; 988 return EV_VERSION_MINOR;
748} 989}
749 990
750/* return true if we are running with elevated privileges and should ignore env variables */ 991/* return true if we are running with elevated privileges and should ignore env variables */
751static int 992int inline_size
752enable_secure (void) 993enable_secure (void)
753{ 994{
754#ifdef _WIN32 995#ifdef _WIN32
755 return 0; 996 return 0;
756#else 997#else
… …
758 || getgid () != getegid (); 999 || getgid () != getegid ();
759#endif 1000#endif
760} 1001}
761 1002
762unsigned int 1003unsigned int
763ev_method (EV_P) 1004ev_supported_backends (void)
764{ 1005{
765 return method; 1006 unsigned int flags = 0;
766}
767 1007
768static void 1008 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1009 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1010 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1012 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1013
1014 return flags;
1015}
1016
1017unsigned int
1018ev_recommended_backends (void)
1019{
1020 unsigned int flags = ev_supported_backends ();
1021
1022#ifndef __NetBSD__
1023 /* kqueue is borked on everything but netbsd apparently */
1024 /* it usually doesn't work correctly on anything but sockets and pipes */
1025 flags &= ~EVBACKEND_KQUEUE;
1026#endif
1027#ifdef __APPLE__
1028 // flags &= ~EVBACKEND_KQUEUE; for documentation
1029 flags &= ~EVBACKEND_POLL;
1030#endif
1031
1032 return flags;
1033}
1034
1035unsigned int
1036ev_embeddable_backends (void)
1037{
1038 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1039
1040 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1041 /* please fix it and tell me how to detect the fix */
1042 flags &= ~EVBACKEND_EPOLL;
1043
1044 return flags;
1045}
1046
1047unsigned int
1048ev_backend (EV_P)
1049{
1050 return backend;
1051}
1052
1053unsigned int
1054ev_loop_count (EV_P)
1055{
1056 return loop_count;
1057}
1058
1059void
1060ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061{
1062 io_blocktime = interval;
1063}
1064
1065void
1066ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 timeout_blocktime = interval;
1069}
1070
1071static void noinline
769loop_init (EV_P_ unsigned int flags) 1072loop_init (EV_P_ unsigned int flags)
770{ 1073{
771 if (!method) 1074 if (!backend)
772 { 1075 {
773#if EV_USE_MONOTONIC 1076#if EV_USE_MONOTONIC
774 { 1077 {
775 struct timespec ts; 1078 struct timespec ts;
776 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1079 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
781 ev_rt_now = ev_time (); 1084 ev_rt_now = ev_time ();
782 mn_now = get_clock (); 1085 mn_now = get_clock ();
783 now_floor = mn_now; 1086 now_floor = mn_now;
784 rtmn_diff = ev_rt_now - mn_now; 1087 rtmn_diff = ev_rt_now - mn_now;
785 1088
786 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1089 io_blocktime = 0.;
1090 timeout_blocktime = 0.;
1091
1092 /* pid check not overridable via env */
1093#ifndef _WIN32
1094 if (flags & EVFLAG_FORKCHECK)
1095 curpid = getpid ();
1096#endif
1097
1098 if (!(flags & EVFLAG_NOENV)
1099 && !enable_secure ()
1100 && getenv ("LIBEV_FLAGS"))
787 flags = atoi (getenv ("LIBEV_FLAGS")); 1101 flags = atoi (getenv ("LIBEV_FLAGS"));
788 1102
789 if (!(flags & 0x0000ffff)) 1103 if (!(flags & 0x0000ffffUL))
790 flags |= 0x0000ffff; 1104 flags |= ev_recommended_backends ();
791 1105
792 method = 0; 1106 backend = 0;
1107 backend_fd = -1;
1108#if EV_USE_INOTIFY
1109 fs_fd = -2;
1110#endif
1111
793#if EV_USE_PORT 1112#if EV_USE_PORT
794 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1113 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795#endif 1114#endif
796#if EV_USE_KQUEUE 1115#if EV_USE_KQUEUE
797 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1116 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798#endif 1117#endif
799#if EV_USE_EPOLL 1118#if EV_USE_EPOLL
800 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1119 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801#endif 1120#endif
802#if EV_USE_POLL 1121#if EV_USE_POLL
803 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1122 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804#endif 1123#endif
805#if EV_USE_SELECT 1124#if EV_USE_SELECT
806 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1125 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807#endif 1126#endif
808 1127
809 ev_init (&sigev, sigcb); 1128 ev_init (&pipeev, pipecb);
810 ev_set_priority (&sigev, EV_MAXPRI); 1129 ev_set_priority (&pipeev, EV_MAXPRI);
811 } 1130 }
812} 1131}
813 1132
814void 1133static void noinline
815loop_destroy (EV_P) 1134loop_destroy (EV_P)
816{ 1135{
817 int i; 1136 int i;
818 1137
1138 if (ev_is_active (&pipeev))
1139 {
1140 ev_ref (EV_A); /* signal watcher */
1141 ev_io_stop (EV_A_ &pipeev);
1142
1143 close (evpipe [0]); evpipe [0] = 0;
1144 close (evpipe [1]); evpipe [1] = 0;
1145 }
1146
1147#if EV_USE_INOTIFY
1148 if (fs_fd >= 0)
1149 close (fs_fd);
1150#endif
1151
1152 if (backend_fd >= 0)
1153 close (backend_fd);
1154
819#if EV_USE_PORT 1155#if EV_USE_PORT
820 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1156 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821#endif 1157#endif
822#if EV_USE_KQUEUE 1158#if EV_USE_KQUEUE
823 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1159 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824#endif 1160#endif
825#if EV_USE_EPOLL 1161#if EV_USE_EPOLL
826 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1162 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827#endif 1163#endif
828#if EV_USE_POLL 1164#if EV_USE_POLL
829 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1165 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830#endif 1166#endif
831#if EV_USE_SELECT 1167#if EV_USE_SELECT
832 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1168 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833#endif 1169#endif
834 1170
835 for (i = NUMPRI; i--; ) 1171 for (i = NUMPRI; i--; )
1172 {
836 array_free (pending, [i]); 1173 array_free (pending, [i]);
1174#if EV_IDLE_ENABLE
1175 array_free (idle, [i]);
1176#endif
1177 }
1178
1179 ev_free (anfds); anfdmax = 0;
837 1180
838 /* have to use the microsoft-never-gets-it-right macro */ 1181 /* have to use the microsoft-never-gets-it-right macro */
839 array_free (fdchange, EMPTY0); 1182 array_free (fdchange, EMPTY);
840 array_free (timer, EMPTY0); 1183 array_free (timer, EMPTY);
841#if EV_PERIODICS 1184#if EV_PERIODIC_ENABLE
842 array_free (periodic, EMPTY0); 1185 array_free (periodic, EMPTY);
843#endif 1186#endif
1187#if EV_FORK_ENABLE
844 array_free (idle, EMPTY0); 1188 array_free (fork, EMPTY);
1189#endif
845 array_free (prepare, EMPTY0); 1190 array_free (prepare, EMPTY);
846 array_free (check, EMPTY0); 1191 array_free (check, EMPTY);
847 1192
848 method = 0; 1193 backend = 0;
849} 1194}
850 1195
851static void 1196void inline_size infy_fork (EV_P);
1197
1198void inline_size
852loop_fork (EV_P) 1199loop_fork (EV_P)
853{ 1200{
854#if EV_USE_PORT 1201#if EV_USE_PORT
855 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1202 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856#endif 1203#endif
857#if EV_USE_KQUEUE 1204#if EV_USE_KQUEUE
858 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1205 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859#endif 1206#endif
860#if EV_USE_EPOLL 1207#if EV_USE_EPOLL
861 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1208 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
862#endif 1209#endif
1210#if EV_USE_INOTIFY
1211 infy_fork (EV_A);
1212#endif
863 1213
864 if (ev_is_active (&sigev)) 1214 if (ev_is_active (&pipeev))
865 { 1215 {
866 /* default loop */ 1216 /* this "locks" the handlers against writing to the pipe */
1217 gotsig = gotasync = 1;
867 1218
868 ev_ref (EV_A); 1219 ev_ref (EV_A);
869 ev_io_stop (EV_A_ &sigev); 1220 ev_io_stop (EV_A_ &pipeev);
870 close (sigpipe [0]); 1221 close (evpipe [0]);
871 close (sigpipe [1]); 1222 close (evpipe [1]);
872 1223
873 while (pipe (sigpipe))
874 syserr ("(libev) error creating pipe");
875
876 siginit (EV_A); 1224 evpipe_init (EV_A);
1225 /* now iterate over everything, in case we missed something */
1226 pipecb (EV_A_ &pipeev, EV_READ);
877 } 1227 }
878 1228
879 postfork = 0; 1229 postfork = 0;
880} 1230}
881 1231
… …
887 1237
888 memset (loop, 0, sizeof (struct ev_loop)); 1238 memset (loop, 0, sizeof (struct ev_loop));
889 1239
890 loop_init (EV_A_ flags); 1240 loop_init (EV_A_ flags);
891 1241
892 if (ev_method (EV_A)) 1242 if (ev_backend (EV_A))
893 return loop; 1243 return loop;
894 1244
895 return 0; 1245 return 0;
896} 1246}
897 1247
… …
903} 1253}
904 1254
905void 1255void
906ev_loop_fork (EV_P) 1256ev_loop_fork (EV_P)
907{ 1257{
908 postfork = 1; 1258 postfork = 1; /* must be in line with ev_default_fork */
909} 1259}
910 1260
911#endif 1261#endif
912 1262
913#if EV_MULTIPLICITY 1263#if EV_MULTIPLICITY
914struct ev_loop * 1264struct ev_loop *
915ev_default_loop_ (unsigned int flags) 1265ev_default_loop_init (unsigned int flags)
916#else 1266#else
917int 1267int
918ev_default_loop (unsigned int flags) 1268ev_default_loop (unsigned int flags)
919#endif 1269#endif
920{ 1270{
921 if (sigpipe [0] == sigpipe [1])
922 if (pipe (sigpipe))
923 return 0;
924
925 if (!ev_default_loop_ptr) 1271 if (!ev_default_loop_ptr)
926 { 1272 {
927#if EV_MULTIPLICITY 1273#if EV_MULTIPLICITY
928 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1274 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
929#else 1275#else
930 ev_default_loop_ptr = 1; 1276 ev_default_loop_ptr = 1;
931#endif 1277#endif
932 1278
933 loop_init (EV_A_ flags); 1279 loop_init (EV_A_ flags);
934 1280
935 if (ev_method (EV_A)) 1281 if (ev_backend (EV_A))
936 { 1282 {
937 siginit (EV_A);
938
939#ifndef _WIN32 1283#ifndef _WIN32
940 ev_signal_init (&childev, childcb, SIGCHLD); 1284 ev_signal_init (&childev, childcb, SIGCHLD);
941 ev_set_priority (&childev, EV_MAXPRI); 1285 ev_set_priority (&childev, EV_MAXPRI);
942 ev_signal_start (EV_A_ &childev); 1286 ev_signal_start (EV_A_ &childev);
943 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1287 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
960#ifndef _WIN32 1304#ifndef _WIN32
961 ev_ref (EV_A); /* child watcher */ 1305 ev_ref (EV_A); /* child watcher */
962 ev_signal_stop (EV_A_ &childev); 1306 ev_signal_stop (EV_A_ &childev);
963#endif 1307#endif
964 1308
965 ev_ref (EV_A); /* signal watcher */
966 ev_io_stop (EV_A_ &sigev);
967
968 close (sigpipe [0]); sigpipe [0] = 0;
969 close (sigpipe [1]); sigpipe [1] = 0;
970
971 loop_destroy (EV_A); 1309 loop_destroy (EV_A);
972} 1310}
973 1311
974void 1312void
975ev_default_fork (void) 1313ev_default_fork (void)
976{ 1314{
977#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
978 struct ev_loop *loop = ev_default_loop_ptr; 1316 struct ev_loop *loop = ev_default_loop_ptr;
979#endif 1317#endif
980 1318
981 if (method) 1319 if (backend)
982 postfork = 1; 1320 postfork = 1; /* must be in line with ev_loop_fork */
983} 1321}
984 1322
985/*****************************************************************************/ 1323/*****************************************************************************/
986 1324
987static int 1325void
988any_pending (EV_P) 1326ev_invoke (EV_P_ void *w, int revents)
989{ 1327{
990 int pri; 1328 EV_CB_INVOKE ((W)w, revents);
991
992 for (pri = NUMPRI; pri--; )
993 if (pendingcnt [pri])
994 return 1;
995
996 return 0;
997} 1329}
998 1330
999inline void 1331void inline_speed
1000call_pending (EV_P) 1332call_pending (EV_P)
1001{ 1333{
1002 int pri; 1334 int pri;
1003 1335
1004 for (pri = NUMPRI; pri--; ) 1336 for (pri = NUMPRI; pri--; )
… …
1006 { 1338 {
1007 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1339 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1008 1340
1009 if (expect_true (p->w)) 1341 if (expect_true (p->w))
1010 { 1342 {
1343 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1344
1011 p->w->pending = 0; 1345 p->w->pending = 0;
1012 EV_CB_INVOKE (p->w, p->events); 1346 EV_CB_INVOKE (p->w, p->events);
1013 } 1347 }
1014 } 1348 }
1015} 1349}
1016 1350
1017static void 1351void inline_size
1018timers_reify (EV_P) 1352timers_reify (EV_P)
1019{ 1353{
1020 while (timercnt && ((WT)timers [0])->at <= mn_now) 1354 while (timercnt && ((WT)timers [0])->at <= mn_now)
1021 { 1355 {
1022 struct ev_timer *w = timers [0]; 1356 ev_timer *w = (ev_timer *)timers [0];
1023 1357
1024 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1358 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1025 1359
1026 /* first reschedule or stop timer */ 1360 /* first reschedule or stop timer */
1027 if (w->repeat) 1361 if (w->repeat)
1028 { 1362 {
1029 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1363 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1030 1364
1031 ((WT)w)->at += w->repeat; 1365 ((WT)w)->at += w->repeat;
1032 if (((WT)w)->at < mn_now) 1366 if (((WT)w)->at < mn_now)
1033 ((WT)w)->at = mn_now; 1367 ((WT)w)->at = mn_now;
1034 1368
1035 downheap ((WT *)timers, timercnt, 0); 1369 downheap (timers, timercnt, 0);
1036 } 1370 }
1037 else 1371 else
1038 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1372 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1039 1373
1040 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1374 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1041 } 1375 }
1042} 1376}
1043 1377
1044#if EV_PERIODICS 1378#if EV_PERIODIC_ENABLE
1045static void 1379void inline_size
1046periodics_reify (EV_P) 1380periodics_reify (EV_P)
1047{ 1381{
1048 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1382 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1049 { 1383 {
1050 struct ev_periodic *w = periodics [0]; 1384 ev_periodic *w = (ev_periodic *)periodics [0];
1051 1385
1052 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1386 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1053 1387
1054 /* first reschedule or stop timer */ 1388 /* first reschedule or stop timer */
1055 if (w->reschedule_cb) 1389 if (w->reschedule_cb)
1056 { 1390 {
1057 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1391 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1058 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1392 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1059 downheap ((WT *)periodics, periodiccnt, 0); 1393 downheap (periodics, periodiccnt, 0);
1060 } 1394 }
1061 else if (w->interval) 1395 else if (w->interval)
1062 { 1396 {
1063 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1397 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1064 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1399 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1065 downheap ((WT *)periodics, periodiccnt, 0); 1400 downheap (periodics, periodiccnt, 0);
1066 } 1401 }
1067 else 1402 else
1068 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1403 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1069 1404
1070 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1405 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1071 } 1406 }
1072} 1407}
1073 1408
1074static void 1409static void noinline
1075periodics_reschedule (EV_P) 1410periodics_reschedule (EV_P)
1076{ 1411{
1077 int i; 1412 int i;
1078 1413
1079 /* adjust periodics after time jump */ 1414 /* adjust periodics after time jump */
1080 for (i = 0; i < periodiccnt; ++i) 1415 for (i = 0; i < periodiccnt; ++i)
1081 { 1416 {
1082 struct ev_periodic *w = periodics [i]; 1417 ev_periodic *w = (ev_periodic *)periodics [i];
1083 1418
1084 if (w->reschedule_cb) 1419 if (w->reschedule_cb)
1085 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1420 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1086 else if (w->interval) 1421 else if (w->interval)
1087 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1422 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1088 } 1423 }
1089 1424
1090 /* now rebuild the heap */ 1425 /* now rebuild the heap */
1091 for (i = periodiccnt >> 1; i--; ) 1426 for (i = periodiccnt >> 1; i--; )
1092 downheap ((WT *)periodics, periodiccnt, i); 1427 downheap (periodics, periodiccnt, i);
1093} 1428}
1094#endif 1429#endif
1095 1430
1096inline int 1431#if EV_IDLE_ENABLE
1097time_update_monotonic (EV_P) 1432void inline_size
1433idle_reify (EV_P)
1098{ 1434{
1435 if (expect_false (idleall))
1436 {
1437 int pri;
1438
1439 for (pri = NUMPRI; pri--; )
1440 {
1441 if (pendingcnt [pri])
1442 break;
1443
1444 if (idlecnt [pri])
1445 {
1446 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1447 break;
1448 }
1449 }
1450 }
1451}
1452#endif
1453
1454void inline_speed
1455time_update (EV_P_ ev_tstamp max_block)
1456{
1457 int i;
1458
1459#if EV_USE_MONOTONIC
1460 if (expect_true (have_monotonic))
1461 {
1462 ev_tstamp odiff = rtmn_diff;
1463
1099 mn_now = get_clock (); 1464 mn_now = get_clock ();
1100 1465
1466 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1467 /* interpolate in the meantime */
1101 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1468 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1102 { 1469 {
1103 ev_rt_now = rtmn_diff + mn_now; 1470 ev_rt_now = rtmn_diff + mn_now;
1104 return 0; 1471 return;
1105 } 1472 }
1106 else 1473
1107 {
1108 now_floor = mn_now; 1474 now_floor = mn_now;
1109 ev_rt_now = ev_time (); 1475 ev_rt_now = ev_time ();
1110 return 1;
1111 }
1112}
1113 1476
1114static void 1477 /* loop a few times, before making important decisions.
1115time_update (EV_P) 1478 * on the choice of "4": one iteration isn't enough,
1116{ 1479 * in case we get preempted during the calls to
1117 int i; 1480 * ev_time and get_clock. a second call is almost guaranteed
1118 1481 * to succeed in that case, though. and looping a few more times
1119#if EV_USE_MONOTONIC 1482 * doesn't hurt either as we only do this on time-jumps or
1120 if (expect_true (have_monotonic)) 1483 * in the unlikely event of having been preempted here.
1121 { 1484 */
1122 if (time_update_monotonic (EV_A)) 1485 for (i = 4; --i; )
1123 { 1486 {
1124 ev_tstamp odiff = rtmn_diff;
1125
1126 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1127 {
1128 rtmn_diff = ev_rt_now - mn_now; 1487 rtmn_diff = ev_rt_now - mn_now;
1129 1488
1130 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1489 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1131 return; /* all is well */ 1490 return; /* all is well */
1132 1491
1133 ev_rt_now = ev_time (); 1492 ev_rt_now = ev_time ();
1134 mn_now = get_clock (); 1493 mn_now = get_clock ();
1135 now_floor = mn_now; 1494 now_floor = mn_now;
1136 } 1495 }
1137 1496
1138# if EV_PERIODICS 1497# if EV_PERIODIC_ENABLE
1498 periodics_reschedule (EV_A);
1499# endif
1500 /* no timer adjustment, as the monotonic clock doesn't jump */
1501 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502 }
1503 else
1504#endif
1505 {
1506 ev_rt_now = ev_time ();
1507
1508 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1509 {
1510#if EV_PERIODIC_ENABLE
1139 periodics_reschedule (EV_A); 1511 periodics_reschedule (EV_A);
1140# endif 1512#endif
1141 /* no timer adjustment, as the monotonic clock doesn't jump */
1142 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1143 }
1144 }
1145 else
1146#endif
1147 {
1148 ev_rt_now = ev_time ();
1149
1150 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1151 {
1152#if EV_PERIODICS
1153 periodics_reschedule (EV_A);
1154#endif
1155
1156 /* adjust timers. this is easy, as the offset is the same for all */ 1513 /* adjust timers. this is easy, as the offset is the same for all of them */
1157 for (i = 0; i < timercnt; ++i) 1514 for (i = 0; i < timercnt; ++i)
1158 ((WT)timers [i])->at += ev_rt_now - mn_now; 1515 ((WT)timers [i])->at += ev_rt_now - mn_now;
1159 } 1516 }
1160 1517
1161 mn_now = ev_rt_now; 1518 mn_now = ev_rt_now;
… …
1177static int loop_done; 1534static int loop_done;
1178 1535
1179void 1536void
1180ev_loop (EV_P_ int flags) 1537ev_loop (EV_P_ int flags)
1181{ 1538{
1182 double block;
1183 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1539 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1540 ? EVUNLOOP_ONE
1541 : EVUNLOOP_CANCEL;
1184 1542
1185 while (activecnt) 1543 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1544
1545 do
1186 { 1546 {
1547#ifndef _WIN32
1548 if (expect_false (curpid)) /* penalise the forking check even more */
1549 if (expect_false (getpid () != curpid))
1550 {
1551 curpid = getpid ();
1552 postfork = 1;
1553 }
1554#endif
1555
1556#if EV_FORK_ENABLE
1557 /* we might have forked, so queue fork handlers */
1558 if (expect_false (postfork))
1559 if (forkcnt)
1560 {
1561 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1562 call_pending (EV_A);
1563 }
1564#endif
1565
1187 /* queue check watchers (and execute them) */ 1566 /* queue prepare watchers (and execute them) */
1188 if (expect_false (preparecnt)) 1567 if (expect_false (preparecnt))
1189 { 1568 {
1190 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1569 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1191 call_pending (EV_A); 1570 call_pending (EV_A);
1192 } 1571 }
1193 1572
1573 if (expect_false (!activecnt))
1574 break;
1575
1194 /* we might have forked, so reify kernel state if necessary */ 1576 /* we might have forked, so reify kernel state if necessary */
1195 if (expect_false (postfork)) 1577 if (expect_false (postfork))
1196 loop_fork (EV_A); 1578 loop_fork (EV_A);
1197 1579
1198 /* update fd-related kernel structures */ 1580 /* update fd-related kernel structures */
1199 fd_reify (EV_A); 1581 fd_reify (EV_A);
1200 1582
1201 /* calculate blocking time */ 1583 /* calculate blocking time */
1584 {
1585 ev_tstamp waittime = 0.;
1586 ev_tstamp sleeptime = 0.;
1202 1587
1203 /* we only need this for !monotonic clock or timers, but as we basically 1588 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1204 always have timers, we just calculate it always */
1205#if EV_USE_MONOTONIC
1206 if (expect_true (have_monotonic))
1207 time_update_monotonic (EV_A);
1208 else
1209#endif
1210 { 1589 {
1211 ev_rt_now = ev_time (); 1590 /* update time to cancel out callback processing overhead */
1212 mn_now = ev_rt_now; 1591 time_update (EV_A_ 1e100);
1213 }
1214 1592
1215 if (flags & EVLOOP_NONBLOCK || idlecnt)
1216 block = 0.;
1217 else
1218 {
1219 block = MAX_BLOCKTIME; 1593 waittime = MAX_BLOCKTIME;
1220 1594
1221 if (timercnt) 1595 if (timercnt)
1222 { 1596 {
1223 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1597 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1224 if (block > to) block = to; 1598 if (waittime > to) waittime = to;
1225 } 1599 }
1226 1600
1227#if EV_PERIODICS 1601#if EV_PERIODIC_ENABLE
1228 if (periodiccnt) 1602 if (periodiccnt)
1229 { 1603 {
1230 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1604 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1231 if (block > to) block = to; 1605 if (waittime > to) waittime = to;
1232 } 1606 }
1233#endif 1607#endif
1234 1608
1235 if (block < 0.) block = 0.; 1609 if (expect_false (waittime < timeout_blocktime))
1610 waittime = timeout_blocktime;
1611
1612 sleeptime = waittime - backend_fudge;
1613
1614 if (expect_true (sleeptime > io_blocktime))
1615 sleeptime = io_blocktime;
1616
1617 if (sleeptime)
1618 {
1619 ev_sleep (sleeptime);
1620 waittime -= sleeptime;
1621 }
1236 } 1622 }
1237 1623
1238 method_poll (EV_A_ block); 1624 ++loop_count;
1625 backend_poll (EV_A_ waittime);
1239 1626
1240 /* update ev_rt_now, do magic */ 1627 /* update ev_rt_now, do magic */
1241 time_update (EV_A); 1628 time_update (EV_A_ waittime + sleeptime);
1629 }
1242 1630
1243 /* queue pending timers and reschedule them */ 1631 /* queue pending timers and reschedule them */
1244 timers_reify (EV_A); /* relative timers called last */ 1632 timers_reify (EV_A); /* relative timers called last */
1245#if EV_PERIODICS 1633#if EV_PERIODIC_ENABLE
1246 periodics_reify (EV_A); /* absolute timers called first */ 1634 periodics_reify (EV_A); /* absolute timers called first */
1247#endif 1635#endif
1248 1636
1637#if EV_IDLE_ENABLE
1249 /* queue idle watchers unless io or timers are pending */ 1638 /* queue idle watchers unless other events are pending */
1250 if (idlecnt && !any_pending (EV_A)) 1639 idle_reify (EV_A);
1251 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1640#endif
1252 1641
1253 /* queue check watchers, to be executed first */ 1642 /* queue check watchers, to be executed first */
1254 if (checkcnt) 1643 if (expect_false (checkcnt))
1255 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1644 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1256 1645
1257 call_pending (EV_A); 1646 call_pending (EV_A);
1258 1647
1259 if (loop_done)
1260 break;
1261 } 1648 }
1649 while (expect_true (activecnt && !loop_done));
1262 1650
1263 if (loop_done != 2) 1651 if (loop_done == EVUNLOOP_ONE)
1264 loop_done = 0; 1652 loop_done = EVUNLOOP_CANCEL;
1265} 1653}
1266 1654
1267void 1655void
1268ev_unloop (EV_P_ int how) 1656ev_unloop (EV_P_ int how)
1269{ 1657{
1270 loop_done = how; 1658 loop_done = how;
1271} 1659}
1272 1660
1273/*****************************************************************************/ 1661/*****************************************************************************/
1274 1662
1275inline void 1663void inline_size
1276wlist_add (WL *head, WL elem) 1664wlist_add (WL *head, WL elem)
1277{ 1665{
1278 elem->next = *head; 1666 elem->next = *head;
1279 *head = elem; 1667 *head = elem;
1280} 1668}
1281 1669
1282inline void 1670void inline_size
1283wlist_del (WL *head, WL elem) 1671wlist_del (WL *head, WL elem)
1284{ 1672{
1285 while (*head) 1673 while (*head)
1286 { 1674 {
1287 if (*head == elem) 1675 if (*head == elem)
… …
1292 1680
1293 head = &(*head)->next; 1681 head = &(*head)->next;
1294 } 1682 }
1295} 1683}
1296 1684
1297inline void 1685void inline_speed
1298ev_clear_pending (EV_P_ W w) 1686clear_pending (EV_P_ W w)
1299{ 1687{
1300 if (w->pending) 1688 if (w->pending)
1301 { 1689 {
1302 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1690 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1303 w->pending = 0; 1691 w->pending = 0;
1304 } 1692 }
1305} 1693}
1306 1694
1307inline void 1695int
1696ev_clear_pending (EV_P_ void *w)
1697{
1698 W w_ = (W)w;
1699 int pending = w_->pending;
1700
1701 if (expect_true (pending))
1702 {
1703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1704 w_->pending = 0;
1705 p->w = 0;
1706 return p->events;
1707 }
1708 else
1709 return 0;
1710}
1711
1712void inline_size
1713pri_adjust (EV_P_ W w)
1714{
1715 int pri = w->priority;
1716 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1718 w->priority = pri;
1719}
1720
1721void inline_speed
1308ev_start (EV_P_ W w, int active) 1722ev_start (EV_P_ W w, int active)
1309{ 1723{
1310 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1724 pri_adjust (EV_A_ w);
1311 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1312
1313 w->active = active; 1725 w->active = active;
1314 ev_ref (EV_A); 1726 ev_ref (EV_A);
1315} 1727}
1316 1728
1317inline void 1729void inline_size
1318ev_stop (EV_P_ W w) 1730ev_stop (EV_P_ W w)
1319{ 1731{
1320 ev_unref (EV_A); 1732 ev_unref (EV_A);
1321 w->active = 0; 1733 w->active = 0;
1322} 1734}
1323 1735
1324/*****************************************************************************/ 1736/*****************************************************************************/
1325 1737
1326void 1738void noinline
1327ev_io_start (EV_P_ struct ev_io *w) 1739ev_io_start (EV_P_ ev_io *w)
1328{ 1740{
1329 int fd = w->fd; 1741 int fd = w->fd;
1330 1742
1331 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1332 return; 1744 return;
1333 1745
1334 assert (("ev_io_start called with negative fd", fd >= 0)); 1746 assert (("ev_io_start called with negative fd", fd >= 0));
1335 1747
1336 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1337 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1749 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1338 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1750 wlist_add (&anfds[fd].head, (WL)w);
1339 1751
1340 fd_change (EV_A_ fd); 1752 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1753 w->events &= ~EV_IOFDSET;
1341} 1754}
1342 1755
1343void 1756void noinline
1344ev_io_stop (EV_P_ struct ev_io *w) 1757ev_io_stop (EV_P_ ev_io *w)
1345{ 1758{
1346 ev_clear_pending (EV_A_ (W)w); 1759 clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w)) 1760 if (expect_false (!ev_is_active (w)))
1348 return; 1761 return;
1349 1762
1350 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1763 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1351 1764
1352 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1765 wlist_del (&anfds[w->fd].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1766 ev_stop (EV_A_ (W)w);
1354 1767
1355 fd_change (EV_A_ w->fd); 1768 fd_change (EV_A_ w->fd, 1);
1356} 1769}
1357 1770
1358void 1771void noinline
1359ev_timer_start (EV_P_ struct ev_timer *w) 1772ev_timer_start (EV_P_ ev_timer *w)
1360{ 1773{
1361 if (ev_is_active (w)) 1774 if (expect_false (ev_is_active (w)))
1362 return; 1775 return;
1363 1776
1364 ((WT)w)->at += mn_now; 1777 ((WT)w)->at += mn_now;
1365 1778
1366 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1779 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1367 1780
1368 ev_start (EV_A_ (W)w, ++timercnt); 1781 ev_start (EV_A_ (W)w, ++timercnt);
1369 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1782 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1370 timers [timercnt - 1] = w; 1783 timers [timercnt - 1] = (WT)w;
1371 upheap ((WT *)timers, timercnt - 1); 1784 upheap (timers, timercnt - 1);
1372 1785
1373 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1786 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1374} 1787}
1375 1788
1376void 1789void noinline
1377ev_timer_stop (EV_P_ struct ev_timer *w) 1790ev_timer_stop (EV_P_ ev_timer *w)
1378{ 1791{
1379 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1380 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1381 return; 1794 return;
1382 1795
1383 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1796 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1384 1797
1385 if (((W)w)->active < timercnt--) 1798 {
1799 int active = ((W)w)->active;
1800
1801 if (expect_true (--active < --timercnt))
1386 { 1802 {
1387 timers [((W)w)->active - 1] = timers [timercnt]; 1803 timers [active] = timers [timercnt];
1388 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1804 adjustheap (timers, timercnt, active);
1389 } 1805 }
1806 }
1390 1807
1391 ((WT)w)->at -= mn_now; 1808 ((WT)w)->at -= mn_now;
1392 1809
1393 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1394} 1811}
1395 1812
1396void 1813void noinline
1397ev_timer_again (EV_P_ struct ev_timer *w) 1814ev_timer_again (EV_P_ ev_timer *w)
1398{ 1815{
1399 if (ev_is_active (w)) 1816 if (ev_is_active (w))
1400 { 1817 {
1401 if (w->repeat) 1818 if (w->repeat)
1402 { 1819 {
1403 ((WT)w)->at = mn_now + w->repeat; 1820 ((WT)w)->at = mn_now + w->repeat;
1404 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1821 adjustheap (timers, timercnt, ((W)w)->active - 1);
1405 } 1822 }
1406 else 1823 else
1407 ev_timer_stop (EV_A_ w); 1824 ev_timer_stop (EV_A_ w);
1408 } 1825 }
1409 else if (w->repeat) 1826 else if (w->repeat)
… …
1411 w->at = w->repeat; 1828 w->at = w->repeat;
1412 ev_timer_start (EV_A_ w); 1829 ev_timer_start (EV_A_ w);
1413 } 1830 }
1414} 1831}
1415 1832
1416#if EV_PERIODICS 1833#if EV_PERIODIC_ENABLE
1417void 1834void noinline
1418ev_periodic_start (EV_P_ struct ev_periodic *w) 1835ev_periodic_start (EV_P_ ev_periodic *w)
1419{ 1836{
1420 if (ev_is_active (w)) 1837 if (expect_false (ev_is_active (w)))
1421 return; 1838 return;
1422 1839
1423 if (w->reschedule_cb) 1840 if (w->reschedule_cb)
1424 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1841 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1425 else if (w->interval) 1842 else if (w->interval)
1426 { 1843 {
1427 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1844 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1428 /* this formula differs from the one in periodic_reify because we do not always round up */ 1845 /* this formula differs from the one in periodic_reify because we do not always round up */
1429 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1846 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1430 } 1847 }
1848 else
1849 ((WT)w)->at = w->offset;
1431 1850
1432 ev_start (EV_A_ (W)w, ++periodiccnt); 1851 ev_start (EV_A_ (W)w, ++periodiccnt);
1433 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1852 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1434 periodics [periodiccnt - 1] = w; 1853 periodics [periodiccnt - 1] = (WT)w;
1435 upheap ((WT *)periodics, periodiccnt - 1); 1854 upheap (periodics, periodiccnt - 1);
1436 1855
1437 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1856 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1438} 1857}
1439 1858
1440void 1859void noinline
1441ev_periodic_stop (EV_P_ struct ev_periodic *w) 1860ev_periodic_stop (EV_P_ ev_periodic *w)
1442{ 1861{
1443 ev_clear_pending (EV_A_ (W)w); 1862 clear_pending (EV_A_ (W)w);
1444 if (!ev_is_active (w)) 1863 if (expect_false (!ev_is_active (w)))
1445 return; 1864 return;
1446 1865
1447 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1866 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1448 1867
1449 if (((W)w)->active < periodiccnt--) 1868 {
1869 int active = ((W)w)->active;
1870
1871 if (expect_true (--active < --periodiccnt))
1450 { 1872 {
1451 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1873 periodics [active] = periodics [periodiccnt];
1452 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1874 adjustheap (periodics, periodiccnt, active);
1453 } 1875 }
1876 }
1454 1877
1455 ev_stop (EV_A_ (W)w); 1878 ev_stop (EV_A_ (W)w);
1456} 1879}
1457 1880
1458void 1881void noinline
1459ev_periodic_again (EV_P_ struct ev_periodic *w) 1882ev_periodic_again (EV_P_ ev_periodic *w)
1460{ 1883{
1461 /* TODO: use adjustheap and recalculation */ 1884 /* TODO: use adjustheap and recalculation */
1462 ev_periodic_stop (EV_A_ w); 1885 ev_periodic_stop (EV_A_ w);
1463 ev_periodic_start (EV_A_ w); 1886 ev_periodic_start (EV_A_ w);
1464} 1887}
1465#endif 1888#endif
1466 1889
1467void
1468ev_idle_start (EV_P_ struct ev_idle *w)
1469{
1470 if (ev_is_active (w))
1471 return;
1472
1473 ev_start (EV_A_ (W)w, ++idlecnt);
1474 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1475 idles [idlecnt - 1] = w;
1476}
1477
1478void
1479ev_idle_stop (EV_P_ struct ev_idle *w)
1480{
1481 ev_clear_pending (EV_A_ (W)w);
1482 if (!ev_is_active (w))
1483 return;
1484
1485 idles [((W)w)->active - 1] = idles [--idlecnt];
1486 ev_stop (EV_A_ (W)w);
1487}
1488
1489void
1490ev_prepare_start (EV_P_ struct ev_prepare *w)
1491{
1492 if (ev_is_active (w))
1493 return;
1494
1495 ev_start (EV_A_ (W)w, ++preparecnt);
1496 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1497 prepares [preparecnt - 1] = w;
1498}
1499
1500void
1501ev_prepare_stop (EV_P_ struct ev_prepare *w)
1502{
1503 ev_clear_pending (EV_A_ (W)w);
1504 if (!ev_is_active (w))
1505 return;
1506
1507 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1508 ev_stop (EV_A_ (W)w);
1509}
1510
1511void
1512ev_check_start (EV_P_ struct ev_check *w)
1513{
1514 if (ev_is_active (w))
1515 return;
1516
1517 ev_start (EV_A_ (W)w, ++checkcnt);
1518 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1519 checks [checkcnt - 1] = w;
1520}
1521
1522void
1523ev_check_stop (EV_P_ struct ev_check *w)
1524{
1525 ev_clear_pending (EV_A_ (W)w);
1526 if (!ev_is_active (w))
1527 return;
1528
1529 checks [((W)w)->active - 1] = checks [--checkcnt];
1530 ev_stop (EV_A_ (W)w);
1531}
1532
1533#ifndef SA_RESTART 1890#ifndef SA_RESTART
1534# define SA_RESTART 0 1891# define SA_RESTART 0
1535#endif 1892#endif
1536 1893
1537void 1894void noinline
1538ev_signal_start (EV_P_ struct ev_signal *w) 1895ev_signal_start (EV_P_ ev_signal *w)
1539{ 1896{
1540#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1541 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1898 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542#endif 1899#endif
1543 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1544 return; 1901 return;
1545 1902
1546 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1903 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1547 1904
1905 evpipe_init (EV_A);
1906
1907 {
1908#ifndef _WIN32
1909 sigset_t full, prev;
1910 sigfillset (&full);
1911 sigprocmask (SIG_SETMASK, &full, &prev);
1912#endif
1913
1914 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1915
1916#ifndef _WIN32
1917 sigprocmask (SIG_SETMASK, &prev, 0);
1918#endif
1919 }
1920
1548 ev_start (EV_A_ (W)w, 1); 1921 ev_start (EV_A_ (W)w, 1);
1549 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1550 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1922 wlist_add (&signals [w->signum - 1].head, (WL)w);
1551 1923
1552 if (!((WL)w)->next) 1924 if (!((WL)w)->next)
1553 { 1925 {
1554#if _WIN32 1926#if _WIN32
1555 signal (w->signum, sighandler); 1927 signal (w->signum, sighandler);
… …
1561 sigaction (w->signum, &sa, 0); 1933 sigaction (w->signum, &sa, 0);
1562#endif 1934#endif
1563 } 1935 }
1564} 1936}
1565 1937
1566void 1938void noinline
1567ev_signal_stop (EV_P_ struct ev_signal *w) 1939ev_signal_stop (EV_P_ ev_signal *w)
1568{ 1940{
1569 ev_clear_pending (EV_A_ (W)w); 1941 clear_pending (EV_A_ (W)w);
1570 if (!ev_is_active (w)) 1942 if (expect_false (!ev_is_active (w)))
1571 return; 1943 return;
1572 1944
1573 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1945 wlist_del (&signals [w->signum - 1].head, (WL)w);
1574 ev_stop (EV_A_ (W)w); 1946 ev_stop (EV_A_ (W)w);
1575 1947
1576 if (!signals [w->signum - 1].head) 1948 if (!signals [w->signum - 1].head)
1577 signal (w->signum, SIG_DFL); 1949 signal (w->signum, SIG_DFL);
1578} 1950}
1579 1951
1580void 1952void
1581ev_child_start (EV_P_ struct ev_child *w) 1953ev_child_start (EV_P_ ev_child *w)
1582{ 1954{
1583#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1584 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1956 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1585#endif 1957#endif
1586 if (ev_is_active (w)) 1958 if (expect_false (ev_is_active (w)))
1587 return; 1959 return;
1588 1960
1589 ev_start (EV_A_ (W)w, 1); 1961 ev_start (EV_A_ (W)w, 1);
1590 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1962 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1591} 1963}
1592 1964
1593void 1965void
1594ev_child_stop (EV_P_ struct ev_child *w) 1966ev_child_stop (EV_P_ ev_child *w)
1595{ 1967{
1596 ev_clear_pending (EV_A_ (W)w); 1968 clear_pending (EV_A_ (W)w);
1597 if (!ev_is_active (w)) 1969 if (expect_false (!ev_is_active (w)))
1598 return; 1970 return;
1599 1971
1600 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1972 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1601 ev_stop (EV_A_ (W)w); 1973 ev_stop (EV_A_ (W)w);
1602} 1974}
1603 1975
1976#if EV_STAT_ENABLE
1977
1978# ifdef _WIN32
1979# undef lstat
1980# define lstat(a,b) _stati64 (a,b)
1981# endif
1982
1983#define DEF_STAT_INTERVAL 5.0074891
1984#define MIN_STAT_INTERVAL 0.1074891
1985
1986static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1987
1988#if EV_USE_INOTIFY
1989# define EV_INOTIFY_BUFSIZE 8192
1990
1991static void noinline
1992infy_add (EV_P_ ev_stat *w)
1993{
1994 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);
1995
1996 if (w->wd < 0)
1997 {
1998 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1999
2000 /* monitor some parent directory for speedup hints */
2001 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2002 {
2003 char path [4096];
2004 strcpy (path, w->path);
2005
2006 do
2007 {
2008 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2009 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2010
2011 char *pend = strrchr (path, '/');
2012
2013 if (!pend)
2014 break; /* whoops, no '/', complain to your admin */
2015
2016 *pend = 0;
2017 w->wd = inotify_add_watch (fs_fd, path, mask);
2018 }
2019 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2020 }
2021 }
2022 else
2023 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2024
2025 if (w->wd >= 0)
2026 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2027}
2028
2029static void noinline
2030infy_del (EV_P_ ev_stat *w)
2031{
2032 int slot;
2033 int wd = w->wd;
2034
2035 if (wd < 0)
2036 return;
2037
2038 w->wd = -2;
2039 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2040 wlist_del (&fs_hash [slot].head, (WL)w);
2041
2042 /* remove this watcher, if others are watching it, they will rearm */
2043 inotify_rm_watch (fs_fd, wd);
2044}
2045
2046static void noinline
2047infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2048{
2049 if (slot < 0)
2050 /* overflow, need to check for all hahs slots */
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 infy_wd (EV_A_ slot, wd, ev);
2053 else
2054 {
2055 WL w_;
2056
2057 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2058 {
2059 ev_stat *w = (ev_stat *)w_;
2060 w_ = w_->next; /* lets us remove this watcher and all before it */
2061
2062 if (w->wd == wd || wd == -1)
2063 {
2064 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2065 {
2066 w->wd = -1;
2067 infy_add (EV_A_ w); /* re-add, no matter what */
2068 }
2069
2070 stat_timer_cb (EV_A_ &w->timer, 0);
2071 }
2072 }
2073 }
2074}
2075
2076static void
2077infy_cb (EV_P_ ev_io *w, int revents)
2078{
2079 char buf [EV_INOTIFY_BUFSIZE];
2080 struct inotify_event *ev = (struct inotify_event *)buf;
2081 int ofs;
2082 int len = read (fs_fd, buf, sizeof (buf));
2083
2084 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2085 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2086}
2087
2088void inline_size
2089infy_init (EV_P)
2090{
2091 if (fs_fd != -2)
2092 return;
2093
2094 fs_fd = inotify_init ();
2095
2096 if (fs_fd >= 0)
2097 {
2098 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2099 ev_set_priority (&fs_w, EV_MAXPRI);
2100 ev_io_start (EV_A_ &fs_w);
2101 }
2102}
2103
2104void inline_size
2105infy_fork (EV_P)
2106{
2107 int slot;
2108
2109 if (fs_fd < 0)
2110 return;
2111
2112 close (fs_fd);
2113 fs_fd = inotify_init ();
2114
2115 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2116 {
2117 WL w_ = fs_hash [slot].head;
2118 fs_hash [slot].head = 0;
2119
2120 while (w_)
2121 {
2122 ev_stat *w = (ev_stat *)w_;
2123 w_ = w_->next; /* lets us add this watcher */
2124
2125 w->wd = -1;
2126
2127 if (fs_fd >= 0)
2128 infy_add (EV_A_ w); /* re-add, no matter what */
2129 else
2130 ev_timer_start (EV_A_ &w->timer);
2131 }
2132
2133 }
2134}
2135
2136#endif
2137
2138void
2139ev_stat_stat (EV_P_ ev_stat *w)
2140{
2141 if (lstat (w->path, &w->attr) < 0)
2142 w->attr.st_nlink = 0;
2143 else if (!w->attr.st_nlink)
2144 w->attr.st_nlink = 1;
2145}
2146
2147static void noinline
2148stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2149{
2150 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2151
2152 /* we copy this here each the time so that */
2153 /* prev has the old value when the callback gets invoked */
2154 w->prev = w->attr;
2155 ev_stat_stat (EV_A_ w);
2156
2157 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2158 if (
2159 w->prev.st_dev != w->attr.st_dev
2160 || w->prev.st_ino != w->attr.st_ino
2161 || w->prev.st_mode != w->attr.st_mode
2162 || w->prev.st_nlink != w->attr.st_nlink
2163 || w->prev.st_uid != w->attr.st_uid
2164 || w->prev.st_gid != w->attr.st_gid
2165 || w->prev.st_rdev != w->attr.st_rdev
2166 || w->prev.st_size != w->attr.st_size
2167 || w->prev.st_atime != w->attr.st_atime
2168 || w->prev.st_mtime != w->attr.st_mtime
2169 || w->prev.st_ctime != w->attr.st_ctime
2170 ) {
2171 #if EV_USE_INOTIFY
2172 infy_del (EV_A_ w);
2173 infy_add (EV_A_ w);
2174 ev_stat_stat (EV_A_ w); /* avoid race... */
2175 #endif
2176
2177 ev_feed_event (EV_A_ w, EV_STAT);
2178 }
2179}
2180
2181void
2182ev_stat_start (EV_P_ ev_stat *w)
2183{
2184 if (expect_false (ev_is_active (w)))
2185 return;
2186
2187 /* since we use memcmp, we need to clear any padding data etc. */
2188 memset (&w->prev, 0, sizeof (ev_statdata));
2189 memset (&w->attr, 0, sizeof (ev_statdata));
2190
2191 ev_stat_stat (EV_A_ w);
2192
2193 if (w->interval < MIN_STAT_INTERVAL)
2194 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2195
2196 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2197 ev_set_priority (&w->timer, ev_priority (w));
2198
2199#if EV_USE_INOTIFY
2200 infy_init (EV_A);
2201
2202 if (fs_fd >= 0)
2203 infy_add (EV_A_ w);
2204 else
2205#endif
2206 ev_timer_start (EV_A_ &w->timer);
2207
2208 ev_start (EV_A_ (W)w, 1);
2209}
2210
2211void
2212ev_stat_stop (EV_P_ ev_stat *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218#if EV_USE_INOTIFY
2219 infy_del (EV_A_ w);
2220#endif
2221 ev_timer_stop (EV_A_ &w->timer);
2222
2223 ev_stop (EV_A_ (W)w);
2224}
2225#endif
2226
2227#if EV_IDLE_ENABLE
2228void
2229ev_idle_start (EV_P_ ev_idle *w)
2230{
2231 if (expect_false (ev_is_active (w)))
2232 return;
2233
2234 pri_adjust (EV_A_ (W)w);
2235
2236 {
2237 int active = ++idlecnt [ABSPRI (w)];
2238
2239 ++idleall;
2240 ev_start (EV_A_ (W)w, active);
2241
2242 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2243 idles [ABSPRI (w)][active - 1] = w;
2244 }
2245}
2246
2247void
2248ev_idle_stop (EV_P_ ev_idle *w)
2249{
2250 clear_pending (EV_A_ (W)w);
2251 if (expect_false (!ev_is_active (w)))
2252 return;
2253
2254 {
2255 int active = ((W)w)->active;
2256
2257 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2258 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2259
2260 ev_stop (EV_A_ (W)w);
2261 --idleall;
2262 }
2263}
2264#endif
2265
2266void
2267ev_prepare_start (EV_P_ ev_prepare *w)
2268{
2269 if (expect_false (ev_is_active (w)))
2270 return;
2271
2272 ev_start (EV_A_ (W)w, ++preparecnt);
2273 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2274 prepares [preparecnt - 1] = w;
2275}
2276
2277void
2278ev_prepare_stop (EV_P_ ev_prepare *w)
2279{
2280 clear_pending (EV_A_ (W)w);
2281 if (expect_false (!ev_is_active (w)))
2282 return;
2283
2284 {
2285 int active = ((W)w)->active;
2286 prepares [active - 1] = prepares [--preparecnt];
2287 ((W)prepares [active - 1])->active = active;
2288 }
2289
2290 ev_stop (EV_A_ (W)w);
2291}
2292
2293void
2294ev_check_start (EV_P_ ev_check *w)
2295{
2296 if (expect_false (ev_is_active (w)))
2297 return;
2298
2299 ev_start (EV_A_ (W)w, ++checkcnt);
2300 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2301 checks [checkcnt - 1] = w;
2302}
2303
2304void
2305ev_check_stop (EV_P_ ev_check *w)
2306{
2307 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w)))
2309 return;
2310
2311 {
2312 int active = ((W)w)->active;
2313 checks [active - 1] = checks [--checkcnt];
2314 ((W)checks [active - 1])->active = active;
2315 }
2316
2317 ev_stop (EV_A_ (W)w);
2318}
2319
2320#if EV_EMBED_ENABLE
2321void noinline
2322ev_embed_sweep (EV_P_ ev_embed *w)
2323{
2324 ev_loop (w->other, EVLOOP_NONBLOCK);
2325}
2326
2327static void
2328embed_io_cb (EV_P_ ev_io *io, int revents)
2329{
2330 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2331
2332 if (ev_cb (w))
2333 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2334 else
2335 ev_loop (w->other, EVLOOP_NONBLOCK);
2336}
2337
2338static void
2339embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2340{
2341 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2342
2343 {
2344 struct ev_loop *loop = w->other;
2345
2346 while (fdchangecnt)
2347 {
2348 fd_reify (EV_A);
2349 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2350 }
2351 }
2352}
2353
2354#if 0
2355static void
2356embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2357{
2358 ev_idle_stop (EV_A_ idle);
2359}
2360#endif
2361
2362void
2363ev_embed_start (EV_P_ ev_embed *w)
2364{
2365 if (expect_false (ev_is_active (w)))
2366 return;
2367
2368 {
2369 struct ev_loop *loop = w->other;
2370 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2371 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2372 }
2373
2374 ev_set_priority (&w->io, ev_priority (w));
2375 ev_io_start (EV_A_ &w->io);
2376
2377 ev_prepare_init (&w->prepare, embed_prepare_cb);
2378 ev_set_priority (&w->prepare, EV_MINPRI);
2379 ev_prepare_start (EV_A_ &w->prepare);
2380
2381 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382
2383 ev_start (EV_A_ (W)w, 1);
2384}
2385
2386void
2387ev_embed_stop (EV_P_ ev_embed *w)
2388{
2389 clear_pending (EV_A_ (W)w);
2390 if (expect_false (!ev_is_active (w)))
2391 return;
2392
2393 ev_io_stop (EV_A_ &w->io);
2394 ev_prepare_stop (EV_A_ &w->prepare);
2395
2396 ev_stop (EV_A_ (W)w);
2397}
2398#endif
2399
2400#if EV_FORK_ENABLE
2401void
2402ev_fork_start (EV_P_ ev_fork *w)
2403{
2404 if (expect_false (ev_is_active (w)))
2405 return;
2406
2407 ev_start (EV_A_ (W)w, ++forkcnt);
2408 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2409 forks [forkcnt - 1] = w;
2410}
2411
2412void
2413ev_fork_stop (EV_P_ ev_fork *w)
2414{
2415 clear_pending (EV_A_ (W)w);
2416 if (expect_false (!ev_is_active (w)))
2417 return;
2418
2419 {
2420 int active = ((W)w)->active;
2421 forks [active - 1] = forks [--forkcnt];
2422 ((W)forks [active - 1])->active = active;
2423 }
2424
2425 ev_stop (EV_A_ (W)w);
2426}
2427#endif
2428
2429#if EV_ASYNC_ENABLE
2430void
2431ev_async_start (EV_P_ ev_async *w)
2432{
2433 if (expect_false (ev_is_active (w)))
2434 return;
2435
2436 evpipe_init (EV_A);
2437
2438 ev_start (EV_A_ (W)w, ++asynccnt);
2439 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440 asyncs [asynccnt - 1] = w;
2441}
2442
2443void
2444ev_async_stop (EV_P_ ev_async *w)
2445{
2446 clear_pending (EV_A_ (W)w);
2447 if (expect_false (!ev_is_active (w)))
2448 return;
2449
2450 {
2451 int active = ((W)w)->active;
2452 asyncs [active - 1] = asyncs [--asynccnt];
2453 ((W)asyncs [active - 1])->active = active;
2454 }
2455
2456 ev_stop (EV_A_ (W)w);
2457}
2458
2459void
2460ev_async_send (EV_P_ ev_async *w)
2461{
2462 w->sent = 1;
2463 evpipe_write (EV_A_ 0, 1);
2464}
2465#endif
2466
1604/*****************************************************************************/ 2467/*****************************************************************************/
1605 2468
1606struct ev_once 2469struct ev_once
1607{ 2470{
1608 struct ev_io io; 2471 ev_io io;
1609 struct ev_timer to; 2472 ev_timer to;
1610 void (*cb)(int revents, void *arg); 2473 void (*cb)(int revents, void *arg);
1611 void *arg; 2474 void *arg;
1612}; 2475};
1613 2476
1614static void 2477static void
… …
1623 2486
1624 cb (revents, arg); 2487 cb (revents, arg);
1625} 2488}
1626 2489
1627static void 2490static void
1628once_cb_io (EV_P_ struct ev_io *w, int revents) 2491once_cb_io (EV_P_ ev_io *w, int revents)
1629{ 2492{
1630 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2493 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1631} 2494}
1632 2495
1633static void 2496static void
1634once_cb_to (EV_P_ struct ev_timer *w, int revents) 2497once_cb_to (EV_P_ ev_timer *w, int revents)
1635{ 2498{
1636 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2499 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1637} 2500}
1638 2501
1639void 2502void
1640ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2503ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1641{ 2504{
1642 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2505 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1643 2506
1644 if (!once) 2507 if (expect_false (!once))
2508 {
1645 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2509 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1646 else 2510 return;
1647 { 2511 }
2512
1648 once->cb = cb; 2513 once->cb = cb;
1649 once->arg = arg; 2514 once->arg = arg;
1650 2515
1651 ev_init (&once->io, once_cb_io); 2516 ev_init (&once->io, once_cb_io);
1652 if (fd >= 0) 2517 if (fd >= 0)
1653 { 2518 {
1654 ev_io_set (&once->io, fd, events); 2519 ev_io_set (&once->io, fd, events);
1655 ev_io_start (EV_A_ &once->io); 2520 ev_io_start (EV_A_ &once->io);
1656 } 2521 }
1657 2522
1658 ev_init (&once->to, once_cb_to); 2523 ev_init (&once->to, once_cb_to);
1659 if (timeout >= 0.) 2524 if (timeout >= 0.)
1660 { 2525 {
1661 ev_timer_set (&once->to, timeout, 0.); 2526 ev_timer_set (&once->to, timeout, 0.);
1662 ev_timer_start (EV_A_ &once->to); 2527 ev_timer_start (EV_A_ &once->to);
1663 }
1664 } 2528 }
1665} 2529}
2530
2531#if EV_MULTIPLICITY
2532 #include "ev_wrap.h"
2533#endif
1666 2534
1667#ifdef __cplusplus 2535#ifdef __cplusplus
1668} 2536}
1669#endif 2537#endif
1670 2538

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