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Comparing libev/ev.c (file contents):
Revision 1.123 by root, Sat Nov 17 02:23:54 2007 UTC vs.
Revision 1.223 by root, Sun Apr 6 14:34:50 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
37# include "config.h" 49# include "config.h"
50# endif
38 51
39# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 53# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
42# endif 55# endif
43# ifndef EV_USE_REALTIME 56# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
45# endif 58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
46# endif 66# endif
47 67
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
50# endif 74# endif
51 75
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
54# endif 82# endif
55 83
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
58# endif 90# endif
59 91
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
62# endif 98# endif
63 99
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
65# define EV_USE_PORT 1 102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
66# endif 106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
67 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
68#endif 132#endif
69 133
70#include <math.h> 134#include <math.h>
71#include <stdlib.h> 135#include <stdlib.h>
72#include <fcntl.h> 136#include <fcntl.h>
… …
79#include <sys/types.h> 143#include <sys/types.h>
80#include <time.h> 144#include <time.h>
81 145
82#include <signal.h> 146#include <signal.h>
83 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
84#ifndef _WIN32 154#ifndef _WIN32
85# include <unistd.h>
86# include <sys/time.h> 155# include <sys/time.h>
87# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
88#else 158#else
89# define WIN32_LEAN_AND_MEAN 159# define WIN32_LEAN_AND_MEAN
90# include <windows.h> 160# include <windows.h>
91# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
92# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
93# endif 163# endif
94#endif 164#endif
95 165
96/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
97 167
98#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
99# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
100#endif 170#endif
101 171
102#ifndef EV_USE_REALTIME 172#ifndef EV_USE_REALTIME
103# define EV_USE_REALTIME 0 173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
104#endif 178#endif
105 179
106#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
107# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
108#endif 182#endif
… …
114# define EV_USE_POLL 1 188# define EV_USE_POLL 1
115# endif 189# endif
116#endif 190#endif
117 191
118#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
119# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
120#endif 198#endif
121 199
122#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
123# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
124#endif 202#endif
125 203
126#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
127# define EV_USE_PORT 0 205# define EV_USE_PORT 0
128#endif 206#endif
129 207
130/**/ 208#ifndef EV_USE_INOTIFY
131 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
132/* darwin simply cannot be helped */ 210# define EV_USE_INOTIFY 1
133#ifdef __APPLE__ 211# else
134# undef EV_USE_POLL 212# define EV_USE_INOTIFY 0
135# undef EV_USE_KQUEUE
136#endif 213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
137 241
138#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
139# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
140# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
141#endif 245#endif
… …
143#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
144# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
145# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
146#endif 250#endif
147 251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
148#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
149# include <winsock.h> 268# include <winsock.h>
150#endif 269#endif
151 270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
281#endif
282
152/**/ 283/**/
284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
153 294
154#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#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) */ 296#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 */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
158 298
159#ifdef EV_H
160# include EV_H
161#else
162# include "ev.h"
163#endif
164
165#if __GNUC__ >= 3 299#if __GNUC__ >= 4
166# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
167# define inline static inline 301# define noinline __attribute__ ((noinline))
168#else 302#else
169# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
170# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
171#endif 308#endif
172 309
173#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
174#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
175 319
176#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
177#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
178 322
179#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
180#define EMPTY2(a,b) /* used to suppress some warnings */ 324#define EMPTY2(a,b) /* used to suppress some warnings */
181 325
182typedef struct ev_watcher *W; 326typedef ev_watcher *W;
183typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
184typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
185 329
330#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
186static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 333static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
334#endif
187 335
188#ifdef _WIN32 336#ifdef _WIN32
189# include "ev_win32.c" 337# include "ev_win32.c"
190#endif 338#endif
191 339
192/*****************************************************************************/ 340/*****************************************************************************/
193 341
194static void (*syserr_cb)(const char *msg); 342static void (*syserr_cb)(const char *msg);
195 343
344void
196void ev_set_syserr_cb (void (*cb)(const char *msg)) 345ev_set_syserr_cb (void (*cb)(const char *msg))
197{ 346{
198 syserr_cb = cb; 347 syserr_cb = cb;
199} 348}
200 349
201static void 350static void noinline
202syserr (const char *msg) 351syserr (const char *msg)
203{ 352{
204 if (!msg) 353 if (!msg)
205 msg = "(libev) system error"; 354 msg = "(libev) system error";
206 355
… …
213 } 362 }
214} 363}
215 364
216static void *(*alloc)(void *ptr, long size); 365static void *(*alloc)(void *ptr, long size);
217 366
367void
218void ev_set_allocator (void *(*cb)(void *ptr, long size)) 368ev_set_allocator (void *(*cb)(void *ptr, long size))
219{ 369{
220 alloc = cb; 370 alloc = cb;
221} 371}
222 372
223static void * 373inline_speed void *
224ev_realloc (void *ptr, long size) 374ev_realloc (void *ptr, long size)
225{ 375{
226 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 376 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
227 377
228 if (!ptr && size) 378 if (!ptr && size)
… …
252typedef struct 402typedef struct
253{ 403{
254 W w; 404 W w;
255 int events; 405 int events;
256} ANPENDING; 406} ANPENDING;
407
408#if EV_USE_INOTIFY
409typedef struct
410{
411 WL head;
412} ANFS;
413#endif
257 414
258#if EV_MULTIPLICITY 415#if EV_MULTIPLICITY
259 416
260 struct ev_loop 417 struct ev_loop
261 { 418 {
… …
295 gettimeofday (&tv, 0); 452 gettimeofday (&tv, 0);
296 return tv.tv_sec + tv.tv_usec * 1e-6; 453 return tv.tv_sec + tv.tv_usec * 1e-6;
297#endif 454#endif
298} 455}
299 456
300inline ev_tstamp 457ev_tstamp inline_size
301get_clock (void) 458get_clock (void)
302{ 459{
303#if EV_USE_MONOTONIC 460#if EV_USE_MONOTONIC
304 if (expect_true (have_monotonic)) 461 if (expect_true (have_monotonic))
305 { 462 {
… …
318{ 475{
319 return ev_rt_now; 476 return ev_rt_now;
320} 477}
321#endif 478#endif
322 479
323#define array_roundsize(type,n) (((n) | 4) & ~3) 480void
481ev_sleep (ev_tstamp delay)
482{
483 if (delay > 0.)
484 {
485#if EV_USE_NANOSLEEP
486 struct timespec ts;
487
488 ts.tv_sec = (time_t)delay;
489 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
490
491 nanosleep (&ts, 0);
492#elif defined(_WIN32)
493 Sleep ((unsigned long)(delay * 1e3));
494#else
495 struct timeval tv;
496
497 tv.tv_sec = (time_t)delay;
498 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
499
500 select (0, 0, 0, 0, &tv);
501#endif
502 }
503}
504
505/*****************************************************************************/
506
507int inline_size
508array_nextsize (int elem, int cur, int cnt)
509{
510 int ncur = cur + 1;
511
512 do
513 ncur <<= 1;
514 while (cnt > ncur);
515
516 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
517 if (elem * ncur > 4096)
518 {
519 ncur *= elem;
520 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
521 ncur = ncur - sizeof (void *) * 4;
522 ncur /= elem;
523 }
524
525 return ncur;
526}
527
528static noinline void *
529array_realloc (int elem, void *base, int *cur, int cnt)
530{
531 *cur = array_nextsize (elem, *cur, cnt);
532 return ev_realloc (base, elem * *cur);
533}
324 534
325#define array_needsize(type,base,cur,cnt,init) \ 535#define array_needsize(type,base,cur,cnt,init) \
326 if (expect_false ((cnt) > cur)) \ 536 if (expect_false ((cnt) > (cur))) \
327 { \ 537 { \
328 int newcnt = cur; \ 538 int ocur_ = (cur); \
329 do \ 539 (base) = (type *)array_realloc \
330 { \ 540 (sizeof (type), (base), &(cur), (cnt)); \
331 newcnt = array_roundsize (type, newcnt << 1); \ 541 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 } 542 }
339 543
544#if 0
340#define array_slim(type,stem) \ 545#define array_slim(type,stem) \
341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 546 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
342 { \ 547 { \
343 stem ## max = array_roundsize (stem ## cnt >> 1); \ 548 stem ## max = array_roundsize (stem ## cnt >> 1); \
344 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 549 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 550 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
346 } 551 }
552#endif
347 553
348#define array_free(stem, idx) \ 554#define array_free(stem, idx) \
349 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 555 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
350 556
351/*****************************************************************************/ 557/*****************************************************************************/
352 558
353static void 559void noinline
560ev_feed_event (EV_P_ void *w, int revents)
561{
562 W w_ = (W)w;
563 int pri = ABSPRI (w_);
564
565 if (expect_false (w_->pending))
566 pendings [pri][w_->pending - 1].events |= revents;
567 else
568 {
569 w_->pending = ++pendingcnt [pri];
570 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
571 pendings [pri][w_->pending - 1].w = w_;
572 pendings [pri][w_->pending - 1].events = revents;
573 }
574}
575
576void inline_speed
577queue_events (EV_P_ W *events, int eventcnt, int type)
578{
579 int i;
580
581 for (i = 0; i < eventcnt; ++i)
582 ev_feed_event (EV_A_ events [i], type);
583}
584
585/*****************************************************************************/
586
587void inline_size
354anfds_init (ANFD *base, int count) 588anfds_init (ANFD *base, int count)
355{ 589{
356 while (count--) 590 while (count--)
357 { 591 {
358 base->head = 0; 592 base->head = 0;
… …
361 595
362 ++base; 596 ++base;
363 } 597 }
364} 598}
365 599
366void 600void inline_speed
367ev_feed_event (EV_P_ void *w, int revents)
368{
369 W w_ = (W)w;
370
371 if (expect_false (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) 601fd_event (EV_P_ int fd, int revents)
394{ 602{
395 ANFD *anfd = anfds + fd; 603 ANFD *anfd = anfds + fd;
396 struct ev_io *w; 604 ev_io *w;
397 605
398 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 606 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
399 { 607 {
400 int ev = w->events & revents; 608 int ev = w->events & revents;
401 609
402 if (ev) 610 if (ev)
403 ev_feed_event (EV_A_ (W)w, ev); 611 ev_feed_event (EV_A_ (W)w, ev);
… …
405} 613}
406 614
407void 615void
408ev_feed_fd_event (EV_P_ int fd, int revents) 616ev_feed_fd_event (EV_P_ int fd, int revents)
409{ 617{
618 if (fd >= 0 && fd < anfdmax)
410 fd_event (EV_A_ fd, revents); 619 fd_event (EV_A_ fd, revents);
411} 620}
412 621
413/*****************************************************************************/ 622void inline_size
414
415inline void
416fd_reify (EV_P) 623fd_reify (EV_P)
417{ 624{
418 int i; 625 int i;
419 626
420 for (i = 0; i < fdchangecnt; ++i) 627 for (i = 0; i < fdchangecnt; ++i)
421 { 628 {
422 int fd = fdchanges [i]; 629 int fd = fdchanges [i];
423 ANFD *anfd = anfds + fd; 630 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 631 ev_io *w;
425 632
426 int events = 0; 633 unsigned char events = 0;
427 634
428 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 635 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
429 events |= w->events; 636 events |= (unsigned char)w->events;
430 637
431#if EV_SELECT_IS_WINSOCKET 638#if EV_SELECT_IS_WINSOCKET
432 if (events) 639 if (events)
433 { 640 {
434 unsigned long argp; 641 unsigned long argp;
642 #ifdef EV_FD_TO_WIN32_HANDLE
643 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
644 #else
435 anfd->handle = _get_osfhandle (fd); 645 anfd->handle = _get_osfhandle (fd);
646 #endif
436 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 647 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
437 } 648 }
438#endif 649#endif
439 650
651 {
652 unsigned char o_events = anfd->events;
653 unsigned char o_reify = anfd->reify;
654
440 anfd->reify = 0; 655 anfd->reify = 0;
441
442 method_modify (EV_A_ fd, anfd->events, events);
443 anfd->events = events; 656 anfd->events = events;
657
658 if (o_events != events || o_reify & EV_IOFDSET)
659 backend_modify (EV_A_ fd, o_events, events);
660 }
444 } 661 }
445 662
446 fdchangecnt = 0; 663 fdchangecnt = 0;
447} 664}
448 665
449static void 666void inline_size
450fd_change (EV_P_ int fd) 667fd_change (EV_P_ int fd, int flags)
451{ 668{
452 if (expect_false (anfds [fd].reify)) 669 unsigned char reify = anfds [fd].reify;
453 return;
454
455 anfds [fd].reify = 1; 670 anfds [fd].reify |= flags;
456 671
672 if (expect_true (!reify))
673 {
457 ++fdchangecnt; 674 ++fdchangecnt;
458 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 675 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
459 fdchanges [fdchangecnt - 1] = fd; 676 fdchanges [fdchangecnt - 1] = fd;
677 }
460} 678}
461 679
462static void 680void inline_speed
463fd_kill (EV_P_ int fd) 681fd_kill (EV_P_ int fd)
464{ 682{
465 struct ev_io *w; 683 ev_io *w;
466 684
467 while ((w = (struct ev_io *)anfds [fd].head)) 685 while ((w = (ev_io *)anfds [fd].head))
468 { 686 {
469 ev_io_stop (EV_A_ w); 687 ev_io_stop (EV_A_ w);
470 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 688 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
471 } 689 }
472} 690}
473 691
474inline int 692int inline_size
475fd_valid (int fd) 693fd_valid (int fd)
476{ 694{
477#ifdef _WIN32 695#ifdef _WIN32
478 return _get_osfhandle (fd) != -1; 696 return _get_osfhandle (fd) != -1;
479#else 697#else
480 return fcntl (fd, F_GETFD) != -1; 698 return fcntl (fd, F_GETFD) != -1;
481#endif 699#endif
482} 700}
483 701
484/* called on EBADF to verify fds */ 702/* called on EBADF to verify fds */
485static void 703static void noinline
486fd_ebadf (EV_P) 704fd_ebadf (EV_P)
487{ 705{
488 int fd; 706 int fd;
489 707
490 for (fd = 0; fd < anfdmax; ++fd) 708 for (fd = 0; fd < anfdmax; ++fd)
… …
492 if (!fd_valid (fd) == -1 && errno == EBADF) 710 if (!fd_valid (fd) == -1 && errno == EBADF)
493 fd_kill (EV_A_ fd); 711 fd_kill (EV_A_ fd);
494} 712}
495 713
496/* called on ENOMEM in select/poll to kill some fds and retry */ 714/* called on ENOMEM in select/poll to kill some fds and retry */
497static void 715static void noinline
498fd_enomem (EV_P) 716fd_enomem (EV_P)
499{ 717{
500 int fd; 718 int fd;
501 719
502 for (fd = anfdmax; fd--; ) 720 for (fd = anfdmax; fd--; )
… …
505 fd_kill (EV_A_ fd); 723 fd_kill (EV_A_ fd);
506 return; 724 return;
507 } 725 }
508} 726}
509 727
510/* usually called after fork if method needs to re-arm all fds from scratch */ 728/* usually called after fork if backend needs to re-arm all fds from scratch */
511static void 729static void noinline
512fd_rearm_all (EV_P) 730fd_rearm_all (EV_P)
513{ 731{
514 int fd; 732 int fd;
515 733
516 /* this should be highly optimised to not do anything but set a flag */
517 for (fd = 0; fd < anfdmax; ++fd) 734 for (fd = 0; fd < anfdmax; ++fd)
518 if (anfds [fd].events) 735 if (anfds [fd].events)
519 { 736 {
520 anfds [fd].events = 0; 737 anfds [fd].events = 0;
521 fd_change (EV_A_ fd); 738 fd_change (EV_A_ fd, EV_IOFDSET | 1);
522 } 739 }
523} 740}
524 741
525/*****************************************************************************/ 742/*****************************************************************************/
526 743
527static void 744void inline_speed
528upheap (WT *heap, int k) 745upheap (WT *heap, int k)
529{ 746{
530 WT w = heap [k]; 747 WT w = heap [k];
531 748
532 while (k && heap [k >> 1]->at > w->at) 749 while (k)
533 { 750 {
751 int p = (k - 1) >> 1;
752
753 if (heap [p]->at <= w->at)
754 break;
755
534 heap [k] = heap [k >> 1]; 756 heap [k] = heap [p];
535 ((W)heap [k])->active = k + 1; 757 ((W)heap [k])->active = k + 1;
536 k >>= 1; 758 k = p;
537 } 759 }
538 760
539 heap [k] = w; 761 heap [k] = w;
540 ((W)heap [k])->active = k + 1; 762 ((W)heap [k])->active = k + 1;
541
542} 763}
543 764
544static void 765void inline_speed
545downheap (WT *heap, int N, int k) 766downheap (WT *heap, int N, int k)
546{ 767{
547 WT w = heap [k]; 768 WT w = heap [k];
548 769
549 while (k < (N >> 1)) 770 for (;;)
550 { 771 {
551 int j = k << 1; 772 int c = (k << 1) + 1;
552 773
553 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 774 if (c >= N)
554 ++j;
555
556 if (w->at <= heap [j]->at)
557 break; 775 break;
558 776
777 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
778 ? 1 : 0;
779
780 if (w->at <= heap [c]->at)
781 break;
782
559 heap [k] = heap [j]; 783 heap [k] = heap [c];
560 ((W)heap [k])->active = k + 1; 784 ((W)heap [k])->active = k + 1;
785
561 k = j; 786 k = c;
562 } 787 }
563 788
564 heap [k] = w; 789 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 790 ((W)heap [k])->active = k + 1;
566} 791}
567 792
568inline void 793void inline_size
569adjustheap (WT *heap, int N, int k) 794adjustheap (WT *heap, int N, int k)
570{ 795{
571 upheap (heap, k); 796 upheap (heap, k);
572 downheap (heap, N, k); 797 downheap (heap, N, k);
573} 798}
… …
575/*****************************************************************************/ 800/*****************************************************************************/
576 801
577typedef struct 802typedef struct
578{ 803{
579 WL head; 804 WL head;
580 sig_atomic_t volatile gotsig; 805 EV_ATOMIC_T gotsig;
581} ANSIG; 806} ANSIG;
582 807
583static ANSIG *signals; 808static ANSIG *signals;
584static int signalmax; 809static int signalmax;
585 810
586static int sigpipe [2]; 811static EV_ATOMIC_T gotsig;
587static sig_atomic_t volatile gotsig;
588static struct ev_io sigev;
589 812
590static void 813void inline_size
591signals_init (ANSIG *base, int count) 814signals_init (ANSIG *base, int count)
592{ 815{
593 while (count--) 816 while (count--)
594 { 817 {
595 base->head = 0; 818 base->head = 0;
… …
597 820
598 ++base; 821 ++base;
599 } 822 }
600} 823}
601 824
602static void 825/*****************************************************************************/
603sighandler (int signum)
604{
605#if _WIN32
606 signal (signum, sighandler);
607#endif
608 826
609 signals [signum - 1].gotsig = 1; 827void 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
653static void
654fd_intern (int fd) 828fd_intern (int fd)
655{ 829{
656#ifdef _WIN32 830#ifdef _WIN32
657 int arg = 1; 831 int arg = 1;
658 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
660 fcntl (fd, F_SETFD, FD_CLOEXEC); 834 fcntl (fd, F_SETFD, FD_CLOEXEC);
661 fcntl (fd, F_SETFL, O_NONBLOCK); 835 fcntl (fd, F_SETFL, O_NONBLOCK);
662#endif 836#endif
663} 837}
664 838
839static void noinline
840evpipe_init (EV_P)
841{
842 if (!ev_is_active (&pipeev))
843 {
844#if EV_USE_EVENTFD
845 if ((evfd = eventfd (0, 0)) >= 0)
846 {
847 evpipe [0] = -1;
848 fd_intern (evfd);
849 ev_io_set (&pipeev, evfd, EV_READ);
850 }
851 else
852#endif
853 {
854 while (pipe (evpipe))
855 syserr ("(libev) error creating signal/async pipe");
856
857 fd_intern (evpipe [0]);
858 fd_intern (evpipe [1]);
859 ev_io_set (&pipeev, evpipe [0], EV_READ);
860 }
861
862 ev_io_start (EV_A_ &pipeev);
863 ev_unref (EV_A); /* watcher should not keep loop alive */
864 }
865}
866
867void inline_size
868evpipe_write (EV_P_ EV_ATOMIC_T *flag)
869{
870 if (!*flag)
871 {
872 int old_errno = errno; /* save errno because write might clobber it */
873
874 *flag = 1;
875
876#if EV_USE_EVENTFD
877 if (evfd >= 0)
878 {
879 uint64_t counter = 1;
880 write (evfd, &counter, sizeof (uint64_t));
881 }
882 else
883#endif
884 write (evpipe [1], &old_errno, 1);
885
886 errno = old_errno;
887 }
888}
889
665static void 890static void
666siginit (EV_P) 891pipecb (EV_P_ ev_io *iow, int revents)
667{ 892{
668 fd_intern (sigpipe [0]); 893#if EV_USE_EVENTFD
669 fd_intern (sigpipe [1]); 894 if (evfd >= 0)
895 {
896 uint64_t counter = 1;
897 read (evfd, &counter, sizeof (uint64_t));
898 }
899 else
900#endif
901 {
902 char dummy;
903 read (evpipe [0], &dummy, 1);
904 }
670 905
671 ev_io_set (&sigev, sigpipe [0], EV_READ); 906 if (gotsig && ev_is_default_loop (EV_A))
672 ev_io_start (EV_A_ &sigev); 907 {
673 ev_unref (EV_A); /* child watcher should not keep loop alive */ 908 int signum;
909 gotsig = 0;
910
911 for (signum = signalmax; signum--; )
912 if (signals [signum].gotsig)
913 ev_feed_signal_event (EV_A_ signum + 1);
914 }
915
916#if EV_ASYNC_ENABLE
917 if (gotasync)
918 {
919 int i;
920 gotasync = 0;
921
922 for (i = asynccnt; i--; )
923 if (asyncs [i]->sent)
924 {
925 asyncs [i]->sent = 0;
926 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
927 }
928 }
929#endif
674} 930}
675 931
676/*****************************************************************************/ 932/*****************************************************************************/
677 933
678static struct ev_child *childs [PID_HASHSIZE]; 934static void
935ev_sighandler (int signum)
936{
937#if EV_MULTIPLICITY
938 struct ev_loop *loop = &default_loop_struct;
939#endif
940
941#if _WIN32
942 signal (signum, ev_sighandler);
943#endif
944
945 signals [signum - 1].gotsig = 1;
946 evpipe_write (EV_A_ &gotsig);
947}
948
949void noinline
950ev_feed_signal_event (EV_P_ int signum)
951{
952 WL w;
953
954#if EV_MULTIPLICITY
955 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
956#endif
957
958 --signum;
959
960 if (signum < 0 || signum >= signalmax)
961 return;
962
963 signals [signum].gotsig = 0;
964
965 for (w = signals [signum].head; w; w = w->next)
966 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
967}
968
969/*****************************************************************************/
970
971static WL childs [EV_PID_HASHSIZE];
679 972
680#ifndef _WIN32 973#ifndef _WIN32
681 974
682static struct ev_signal childev; 975static ev_signal childev;
976
977#ifndef WIFCONTINUED
978# define WIFCONTINUED(status) 0
979#endif
980
981void inline_speed
982child_reap (EV_P_ int chain, int pid, int status)
983{
984 ev_child *w;
985 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
986
987 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
988 {
989 if ((w->pid == pid || !w->pid)
990 && (!traced || (w->flags & 1)))
991 {
992 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
993 w->rpid = pid;
994 w->rstatus = status;
995 ev_feed_event (EV_A_ (W)w, EV_CHILD);
996 }
997 }
998}
683 999
684#ifndef WCONTINUED 1000#ifndef WCONTINUED
685# define WCONTINUED 0 1001# define WCONTINUED 0
686#endif 1002#endif
687 1003
688static void 1004static 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) 1005childcb (EV_P_ ev_signal *sw, int revents)
705{ 1006{
706 int pid, status; 1007 int pid, status;
707 1008
1009 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
708 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1010 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
709 { 1011 if (!WCONTINUED
1012 || errno != EINVAL
1013 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1014 return;
1015
710 /* make sure we are called again until all childs have been reaped */ 1016 /* make sure we are called again until all children have been reaped */
1017 /* 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); 1018 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
712 1019
713 child_reap (EV_A_ sw, pid, pid, status); 1020 child_reap (EV_A_ pid, pid, status);
1021 if (EV_PID_HASHSIZE > 1)
714 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1022 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
715 }
716} 1023}
717 1024
718#endif 1025#endif
719 1026
720/*****************************************************************************/ 1027/*****************************************************************************/
… …
746{ 1053{
747 return EV_VERSION_MINOR; 1054 return EV_VERSION_MINOR;
748} 1055}
749 1056
750/* return true if we are running with elevated privileges and should ignore env variables */ 1057/* return true if we are running with elevated privileges and should ignore env variables */
751static int 1058int inline_size
752enable_secure (void) 1059enable_secure (void)
753{ 1060{
754#ifdef _WIN32 1061#ifdef _WIN32
755 return 0; 1062 return 0;
756#else 1063#else
… …
758 || getgid () != getegid (); 1065 || getgid () != getegid ();
759#endif 1066#endif
760} 1067}
761 1068
762unsigned int 1069unsigned int
763ev_method (EV_P) 1070ev_supported_backends (void)
764{ 1071{
765 return method; 1072 unsigned int flags = 0;
766}
767 1073
768static void 1074 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1075 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1076 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1077 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1078 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1079
1080 return flags;
1081}
1082
1083unsigned int
1084ev_recommended_backends (void)
1085{
1086 unsigned int flags = ev_supported_backends ();
1087
1088#ifndef __NetBSD__
1089 /* kqueue is borked on everything but netbsd apparently */
1090 /* it usually doesn't work correctly on anything but sockets and pipes */
1091 flags &= ~EVBACKEND_KQUEUE;
1092#endif
1093#ifdef __APPLE__
1094 // flags &= ~EVBACKEND_KQUEUE; for documentation
1095 flags &= ~EVBACKEND_POLL;
1096#endif
1097
1098 return flags;
1099}
1100
1101unsigned int
1102ev_embeddable_backends (void)
1103{
1104 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1105
1106 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1107 /* please fix it and tell me how to detect the fix */
1108 flags &= ~EVBACKEND_EPOLL;
1109
1110 return flags;
1111}
1112
1113unsigned int
1114ev_backend (EV_P)
1115{
1116 return backend;
1117}
1118
1119unsigned int
1120ev_loop_count (EV_P)
1121{
1122 return loop_count;
1123}
1124
1125void
1126ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1127{
1128 io_blocktime = interval;
1129}
1130
1131void
1132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1133{
1134 timeout_blocktime = interval;
1135}
1136
1137static void noinline
769loop_init (EV_P_ unsigned int flags) 1138loop_init (EV_P_ unsigned int flags)
770{ 1139{
771 if (!method) 1140 if (!backend)
772 { 1141 {
773#if EV_USE_MONOTONIC 1142#if EV_USE_MONOTONIC
774 { 1143 {
775 struct timespec ts; 1144 struct timespec ts;
776 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1145 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
777 have_monotonic = 1; 1146 have_monotonic = 1;
778 } 1147 }
779#endif 1148#endif
780 1149
781 ev_rt_now = ev_time (); 1150 ev_rt_now = ev_time ();
782 mn_now = get_clock (); 1151 mn_now = get_clock ();
783 now_floor = mn_now; 1152 now_floor = mn_now;
784 rtmn_diff = ev_rt_now - mn_now; 1153 rtmn_diff = ev_rt_now - mn_now;
785 1154
786 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1155 io_blocktime = 0.;
1156 timeout_blocktime = 0.;
1157 backend = 0;
1158 backend_fd = -1;
1159 gotasync = 0;
1160#if EV_USE_INOTIFY
1161 fs_fd = -2;
1162#endif
1163
1164 /* pid check not overridable via env */
1165#ifndef _WIN32
1166 if (flags & EVFLAG_FORKCHECK)
1167 curpid = getpid ();
1168#endif
1169
1170 if (!(flags & EVFLAG_NOENV)
1171 && !enable_secure ()
1172 && getenv ("LIBEV_FLAGS"))
787 flags = atoi (getenv ("LIBEV_FLAGS")); 1173 flags = atoi (getenv ("LIBEV_FLAGS"));
788 1174
789 if (!(flags & 0x0000ffff)) 1175 if (!(flags & 0x0000ffffUL))
790 flags |= 0x0000ffff; 1176 flags |= ev_recommended_backends ();
791 1177
792 method = 0;
793#if EV_USE_PORT 1178#if EV_USE_PORT
794 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1179 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795#endif 1180#endif
796#if EV_USE_KQUEUE 1181#if EV_USE_KQUEUE
797 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1182 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798#endif 1183#endif
799#if EV_USE_EPOLL 1184#if EV_USE_EPOLL
800 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1185 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801#endif 1186#endif
802#if EV_USE_POLL 1187#if EV_USE_POLL
803 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1188 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804#endif 1189#endif
805#if EV_USE_SELECT 1190#if EV_USE_SELECT
806 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1191 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807#endif 1192#endif
808 1193
809 ev_init (&sigev, sigcb); 1194 ev_init (&pipeev, pipecb);
810 ev_set_priority (&sigev, EV_MAXPRI); 1195 ev_set_priority (&pipeev, EV_MAXPRI);
811 } 1196 }
812} 1197}
813 1198
814void 1199static void noinline
815loop_destroy (EV_P) 1200loop_destroy (EV_P)
816{ 1201{
817 int i; 1202 int i;
818 1203
1204 if (ev_is_active (&pipeev))
1205 {
1206 ev_ref (EV_A); /* signal watcher */
1207 ev_io_stop (EV_A_ &pipeev);
1208
1209#if EV_USE_EVENTFD
1210 if (evfd >= 0)
1211 close (evfd);
1212#endif
1213
1214 if (evpipe [0] >= 0)
1215 {
1216 close (evpipe [0]);
1217 close (evpipe [1]);
1218 }
1219 }
1220
1221#if EV_USE_INOTIFY
1222 if (fs_fd >= 0)
1223 close (fs_fd);
1224#endif
1225
1226 if (backend_fd >= 0)
1227 close (backend_fd);
1228
819#if EV_USE_PORT 1229#if EV_USE_PORT
820 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1230 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821#endif 1231#endif
822#if EV_USE_KQUEUE 1232#if EV_USE_KQUEUE
823 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1233 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824#endif 1234#endif
825#if EV_USE_EPOLL 1235#if EV_USE_EPOLL
826 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1236 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827#endif 1237#endif
828#if EV_USE_POLL 1238#if EV_USE_POLL
829 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1239 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830#endif 1240#endif
831#if EV_USE_SELECT 1241#if EV_USE_SELECT
832 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1242 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833#endif 1243#endif
834 1244
835 for (i = NUMPRI; i--; ) 1245 for (i = NUMPRI; i--; )
1246 {
836 array_free (pending, [i]); 1247 array_free (pending, [i]);
1248#if EV_IDLE_ENABLE
1249 array_free (idle, [i]);
1250#endif
1251 }
1252
1253 ev_free (anfds); anfdmax = 0;
837 1254
838 /* have to use the microsoft-never-gets-it-right macro */ 1255 /* have to use the microsoft-never-gets-it-right macro */
839 array_free (fdchange, EMPTY0); 1256 array_free (fdchange, EMPTY);
840 array_free (timer, EMPTY0); 1257 array_free (timer, EMPTY);
841#if EV_PERIODICS 1258#if EV_PERIODIC_ENABLE
842 array_free (periodic, EMPTY0); 1259 array_free (periodic, EMPTY);
843#endif 1260#endif
1261#if EV_FORK_ENABLE
844 array_free (idle, EMPTY0); 1262 array_free (fork, EMPTY);
1263#endif
845 array_free (prepare, EMPTY0); 1264 array_free (prepare, EMPTY);
846 array_free (check, EMPTY0); 1265 array_free (check, EMPTY);
1266#if EV_ASYNC_ENABLE
1267 array_free (async, EMPTY);
1268#endif
847 1269
848 method = 0; 1270 backend = 0;
849} 1271}
850 1272
851static void 1273void inline_size infy_fork (EV_P);
1274
1275void inline_size
852loop_fork (EV_P) 1276loop_fork (EV_P)
853{ 1277{
854#if EV_USE_PORT 1278#if EV_USE_PORT
855 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1279 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856#endif 1280#endif
857#if EV_USE_KQUEUE 1281#if EV_USE_KQUEUE
858 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1282 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859#endif 1283#endif
860#if EV_USE_EPOLL 1284#if EV_USE_EPOLL
861 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1285 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
862#endif 1286#endif
1287#if EV_USE_INOTIFY
1288 infy_fork (EV_A);
1289#endif
863 1290
864 if (ev_is_active (&sigev)) 1291 if (ev_is_active (&pipeev))
865 { 1292 {
866 /* default loop */ 1293 /* this "locks" the handlers against writing to the pipe */
1294 /* while we modify the fd vars */
1295 gotsig = 1;
1296#if EV_ASYNC_ENABLE
1297 gotasync = 1;
1298#endif
867 1299
868 ev_ref (EV_A); 1300 ev_ref (EV_A);
869 ev_io_stop (EV_A_ &sigev); 1301 ev_io_stop (EV_A_ &pipeev);
1302
1303#if EV_USE_EVENTFD
1304 if (evfd >= 0)
1305 close (evfd);
1306#endif
1307
1308 if (evpipe [0] >= 0)
1309 {
870 close (sigpipe [0]); 1310 close (evpipe [0]);
871 close (sigpipe [1]); 1311 close (evpipe [1]);
1312 }
872 1313
873 while (pipe (sigpipe))
874 syserr ("(libev) error creating pipe");
875
876 siginit (EV_A); 1314 evpipe_init (EV_A);
1315 /* now iterate over everything, in case we missed something */
1316 pipecb (EV_A_ &pipeev, EV_READ);
877 } 1317 }
878 1318
879 postfork = 0; 1319 postfork = 0;
880} 1320}
881 1321
… …
887 1327
888 memset (loop, 0, sizeof (struct ev_loop)); 1328 memset (loop, 0, sizeof (struct ev_loop));
889 1329
890 loop_init (EV_A_ flags); 1330 loop_init (EV_A_ flags);
891 1331
892 if (ev_method (EV_A)) 1332 if (ev_backend (EV_A))
893 return loop; 1333 return loop;
894 1334
895 return 0; 1335 return 0;
896} 1336}
897 1337
… …
903} 1343}
904 1344
905void 1345void
906ev_loop_fork (EV_P) 1346ev_loop_fork (EV_P)
907{ 1347{
908 postfork = 1; 1348 postfork = 1; /* must be in line with ev_default_fork */
909} 1349}
910 1350
911#endif 1351#endif
912 1352
913#if EV_MULTIPLICITY 1353#if EV_MULTIPLICITY
914struct ev_loop * 1354struct ev_loop *
915ev_default_loop_ (unsigned int flags) 1355ev_default_loop_init (unsigned int flags)
916#else 1356#else
917int 1357int
918ev_default_loop (unsigned int flags) 1358ev_default_loop (unsigned int flags)
919#endif 1359#endif
920{ 1360{
921 if (sigpipe [0] == sigpipe [1])
922 if (pipe (sigpipe))
923 return 0;
924
925 if (!ev_default_loop_ptr) 1361 if (!ev_default_loop_ptr)
926 { 1362 {
927#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
928 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1364 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
929#else 1365#else
930 ev_default_loop_ptr = 1; 1366 ev_default_loop_ptr = 1;
931#endif 1367#endif
932 1368
933 loop_init (EV_A_ flags); 1369 loop_init (EV_A_ flags);
934 1370
935 if (ev_method (EV_A)) 1371 if (ev_backend (EV_A))
936 { 1372 {
937 siginit (EV_A);
938
939#ifndef _WIN32 1373#ifndef _WIN32
940 ev_signal_init (&childev, childcb, SIGCHLD); 1374 ev_signal_init (&childev, childcb, SIGCHLD);
941 ev_set_priority (&childev, EV_MAXPRI); 1375 ev_set_priority (&childev, EV_MAXPRI);
942 ev_signal_start (EV_A_ &childev); 1376 ev_signal_start (EV_A_ &childev);
943 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1377 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
960#ifndef _WIN32 1394#ifndef _WIN32
961 ev_ref (EV_A); /* child watcher */ 1395 ev_ref (EV_A); /* child watcher */
962 ev_signal_stop (EV_A_ &childev); 1396 ev_signal_stop (EV_A_ &childev);
963#endif 1397#endif
964 1398
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); 1399 loop_destroy (EV_A);
972} 1400}
973 1401
974void 1402void
975ev_default_fork (void) 1403ev_default_fork (void)
976{ 1404{
977#if EV_MULTIPLICITY 1405#if EV_MULTIPLICITY
978 struct ev_loop *loop = ev_default_loop_ptr; 1406 struct ev_loop *loop = ev_default_loop_ptr;
979#endif 1407#endif
980 1408
981 if (method) 1409 if (backend)
982 postfork = 1; 1410 postfork = 1; /* must be in line with ev_loop_fork */
983} 1411}
984 1412
985/*****************************************************************************/ 1413/*****************************************************************************/
986 1414
987static int 1415void
988any_pending (EV_P) 1416ev_invoke (EV_P_ void *w, int revents)
989{ 1417{
990 int pri; 1418 EV_CB_INVOKE ((W)w, revents);
991
992 for (pri = NUMPRI; pri--; )
993 if (pendingcnt [pri])
994 return 1;
995
996 return 0;
997} 1419}
998 1420
999inline void 1421void inline_speed
1000call_pending (EV_P) 1422call_pending (EV_P)
1001{ 1423{
1002 int pri; 1424 int pri;
1003 1425
1004 for (pri = NUMPRI; pri--; ) 1426 for (pri = NUMPRI; pri--; )
… …
1006 { 1428 {
1007 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1429 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1008 1430
1009 if (expect_true (p->w)) 1431 if (expect_true (p->w))
1010 { 1432 {
1433 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1434
1011 p->w->pending = 0; 1435 p->w->pending = 0;
1012 EV_CB_INVOKE (p->w, p->events); 1436 EV_CB_INVOKE (p->w, p->events);
1013 } 1437 }
1014 } 1438 }
1015} 1439}
1016 1440
1017inline void 1441void inline_size
1018timers_reify (EV_P) 1442timers_reify (EV_P)
1019{ 1443{
1020 while (timercnt && ((WT)timers [0])->at <= mn_now) 1444 while (timercnt && ((WT)timers [0])->at <= mn_now)
1021 { 1445 {
1022 struct ev_timer *w = timers [0]; 1446 ev_timer *w = (ev_timer *)timers [0];
1023 1447
1024 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1448 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1025 1449
1026 /* first reschedule or stop timer */ 1450 /* first reschedule or stop timer */
1027 if (w->repeat) 1451 if (w->repeat)
1028 { 1452 {
1029 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1453 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1030 1454
1031 ((WT)w)->at += w->repeat; 1455 ((WT)w)->at += w->repeat;
1032 if (((WT)w)->at < mn_now) 1456 if (((WT)w)->at < mn_now)
1033 ((WT)w)->at = mn_now; 1457 ((WT)w)->at = mn_now;
1034 1458
1035 downheap ((WT *)timers, timercnt, 0); 1459 downheap (timers, timercnt, 0);
1036 } 1460 }
1037 else 1461 else
1038 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1462 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1039 1463
1040 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1464 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1041 } 1465 }
1042} 1466}
1043 1467
1044#if EV_PERIODICS 1468#if EV_PERIODIC_ENABLE
1045inline void 1469void inline_size
1046periodics_reify (EV_P) 1470periodics_reify (EV_P)
1047{ 1471{
1048 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1472 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1049 { 1473 {
1050 struct ev_periodic *w = periodics [0]; 1474 ev_periodic *w = (ev_periodic *)periodics [0];
1051 1475
1052 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1476 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1053 1477
1054 /* first reschedule or stop timer */ 1478 /* first reschedule or stop timer */
1055 if (w->reschedule_cb) 1479 if (w->reschedule_cb)
1056 { 1480 {
1057 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1481 ((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)); 1482 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1059 downheap ((WT *)periodics, periodiccnt, 0); 1483 downheap (periodics, periodiccnt, 0);
1060 } 1484 }
1061 else if (w->interval) 1485 else if (w->interval)
1062 { 1486 {
1063 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1487 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1488 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)); 1489 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); 1490 downheap (periodics, periodiccnt, 0);
1066 } 1491 }
1067 else 1492 else
1068 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1493 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1069 1494
1070 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1495 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1071 } 1496 }
1072} 1497}
1073 1498
1074static void 1499static void noinline
1075periodics_reschedule (EV_P) 1500periodics_reschedule (EV_P)
1076{ 1501{
1077 int i; 1502 int i;
1078 1503
1079 /* adjust periodics after time jump */ 1504 /* adjust periodics after time jump */
1080 for (i = 0; i < periodiccnt; ++i) 1505 for (i = 0; i < periodiccnt; ++i)
1081 { 1506 {
1082 struct ev_periodic *w = periodics [i]; 1507 ev_periodic *w = (ev_periodic *)periodics [i];
1083 1508
1084 if (w->reschedule_cb) 1509 if (w->reschedule_cb)
1085 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1510 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1086 else if (w->interval) 1511 else if (w->interval)
1087 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1512 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1088 } 1513 }
1089 1514
1090 /* now rebuild the heap */ 1515 /* now rebuild the heap */
1091 for (i = periodiccnt >> 1; i--; ) 1516 for (i = periodiccnt >> 1; i--; )
1092 downheap ((WT *)periodics, periodiccnt, i); 1517 downheap (periodics, periodiccnt, i);
1093} 1518}
1094#endif 1519#endif
1095 1520
1096inline int 1521#if EV_IDLE_ENABLE
1097time_update_monotonic (EV_P) 1522void inline_size
1523idle_reify (EV_P)
1098{ 1524{
1525 if (expect_false (idleall))
1526 {
1527 int pri;
1528
1529 for (pri = NUMPRI; pri--; )
1530 {
1531 if (pendingcnt [pri])
1532 break;
1533
1534 if (idlecnt [pri])
1535 {
1536 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1537 break;
1538 }
1539 }
1540 }
1541}
1542#endif
1543
1544void inline_speed
1545time_update (EV_P_ ev_tstamp max_block)
1546{
1547 int i;
1548
1549#if EV_USE_MONOTONIC
1550 if (expect_true (have_monotonic))
1551 {
1552 ev_tstamp odiff = rtmn_diff;
1553
1099 mn_now = get_clock (); 1554 mn_now = get_clock ();
1100 1555
1556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1557 /* interpolate in the meantime */
1101 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1558 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1102 { 1559 {
1103 ev_rt_now = rtmn_diff + mn_now; 1560 ev_rt_now = rtmn_diff + mn_now;
1104 return 0; 1561 return;
1105 } 1562 }
1106 else 1563
1107 {
1108 now_floor = mn_now; 1564 now_floor = mn_now;
1109 ev_rt_now = ev_time (); 1565 ev_rt_now = ev_time ();
1110 return 1;
1111 }
1112}
1113 1566
1114inline void 1567 /* loop a few times, before making important decisions.
1115time_update (EV_P) 1568 * on the choice of "4": one iteration isn't enough,
1116{ 1569 * in case we get preempted during the calls to
1117 int i; 1570 * ev_time and get_clock. a second call is almost guaranteed
1118 1571 * to succeed in that case, though. and looping a few more times
1119#if EV_USE_MONOTONIC 1572 * doesn't hurt either as we only do this on time-jumps or
1120 if (expect_true (have_monotonic)) 1573 * in the unlikely event of having been preempted here.
1121 { 1574 */
1122 if (time_update_monotonic (EV_A)) 1575 for (i = 4; --i; )
1123 { 1576 {
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; 1577 rtmn_diff = ev_rt_now - mn_now;
1129 1578
1130 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1579 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1131 return; /* all is well */ 1580 return; /* all is well */
1132 1581
1133 ev_rt_now = ev_time (); 1582 ev_rt_now = ev_time ();
1134 mn_now = get_clock (); 1583 mn_now = get_clock ();
1135 now_floor = mn_now; 1584 now_floor = mn_now;
1136 } 1585 }
1137 1586
1138# if EV_PERIODICS 1587# if EV_PERIODIC_ENABLE
1588 periodics_reschedule (EV_A);
1589# endif
1590 /* no timer adjustment, as the monotonic clock doesn't jump */
1591 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1592 }
1593 else
1594#endif
1595 {
1596 ev_rt_now = ev_time ();
1597
1598 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1599 {
1600#if EV_PERIODIC_ENABLE
1139 periodics_reschedule (EV_A); 1601 periodics_reschedule (EV_A);
1140# endif 1602#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 */ 1603 /* adjust timers. this is easy, as the offset is the same for all of them */
1157 for (i = 0; i < timercnt; ++i) 1604 for (i = 0; i < timercnt; ++i)
1158 ((WT)timers [i])->at += ev_rt_now - mn_now; 1605 ((WT)timers [i])->at += ev_rt_now - mn_now;
1159 } 1606 }
1160 1607
1161 mn_now = ev_rt_now; 1608 mn_now = ev_rt_now;
… …
1177static int loop_done; 1624static int loop_done;
1178 1625
1179void 1626void
1180ev_loop (EV_P_ int flags) 1627ev_loop (EV_P_ int flags)
1181{ 1628{
1182 double block; 1629 loop_done = EVUNLOOP_CANCEL;
1183 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1184 1630
1185 while (activecnt) 1631 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1632
1633 do
1186 { 1634 {
1635#ifndef _WIN32
1636 if (expect_false (curpid)) /* penalise the forking check even more */
1637 if (expect_false (getpid () != curpid))
1638 {
1639 curpid = getpid ();
1640 postfork = 1;
1641 }
1642#endif
1643
1644#if EV_FORK_ENABLE
1645 /* we might have forked, so queue fork handlers */
1646 if (expect_false (postfork))
1647 if (forkcnt)
1648 {
1649 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1650 call_pending (EV_A);
1651 }
1652#endif
1653
1187 /* queue check watchers (and execute them) */ 1654 /* queue prepare watchers (and execute them) */
1188 if (expect_false (preparecnt)) 1655 if (expect_false (preparecnt))
1189 { 1656 {
1190 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1657 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1191 call_pending (EV_A); 1658 call_pending (EV_A);
1192 } 1659 }
1193 1660
1661 if (expect_false (!activecnt))
1662 break;
1663
1194 /* we might have forked, so reify kernel state if necessary */ 1664 /* we might have forked, so reify kernel state if necessary */
1195 if (expect_false (postfork)) 1665 if (expect_false (postfork))
1196 loop_fork (EV_A); 1666 loop_fork (EV_A);
1197 1667
1198 /* update fd-related kernel structures */ 1668 /* update fd-related kernel structures */
1199 fd_reify (EV_A); 1669 fd_reify (EV_A);
1200 1670
1201 /* calculate blocking time */ 1671 /* calculate blocking time */
1672 {
1673 ev_tstamp waittime = 0.;
1674 ev_tstamp sleeptime = 0.;
1202 1675
1203 /* we only need this for !monotonic clock or timers, but as we basically 1676 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 { 1677 {
1211 ev_rt_now = ev_time (); 1678 /* update time to cancel out callback processing overhead */
1212 mn_now = ev_rt_now; 1679 time_update (EV_A_ 1e100);
1213 }
1214 1680
1215 if (flags & EVLOOP_NONBLOCK || idlecnt)
1216 block = 0.;
1217 else
1218 {
1219 block = MAX_BLOCKTIME; 1681 waittime = MAX_BLOCKTIME;
1220 1682
1221 if (timercnt) 1683 if (timercnt)
1222 { 1684 {
1223 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1685 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1224 if (block > to) block = to; 1686 if (waittime > to) waittime = to;
1225 } 1687 }
1226 1688
1227#if EV_PERIODICS 1689#if EV_PERIODIC_ENABLE
1228 if (periodiccnt) 1690 if (periodiccnt)
1229 { 1691 {
1230 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1692 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1231 if (block > to) block = to; 1693 if (waittime > to) waittime = to;
1232 } 1694 }
1233#endif 1695#endif
1234 1696
1235 if (expect_false (block < 0.)) block = 0.; 1697 if (expect_false (waittime < timeout_blocktime))
1698 waittime = timeout_blocktime;
1699
1700 sleeptime = waittime - backend_fudge;
1701
1702 if (expect_true (sleeptime > io_blocktime))
1703 sleeptime = io_blocktime;
1704
1705 if (sleeptime)
1706 {
1707 ev_sleep (sleeptime);
1708 waittime -= sleeptime;
1709 }
1236 } 1710 }
1237 1711
1238 method_poll (EV_A_ block); 1712 ++loop_count;
1713 backend_poll (EV_A_ waittime);
1239 1714
1240 /* update ev_rt_now, do magic */ 1715 /* update ev_rt_now, do magic */
1241 time_update (EV_A); 1716 time_update (EV_A_ waittime + sleeptime);
1717 }
1242 1718
1243 /* queue pending timers and reschedule them */ 1719 /* queue pending timers and reschedule them */
1244 timers_reify (EV_A); /* relative timers called last */ 1720 timers_reify (EV_A); /* relative timers called last */
1245#if EV_PERIODICS 1721#if EV_PERIODIC_ENABLE
1246 periodics_reify (EV_A); /* absolute timers called first */ 1722 periodics_reify (EV_A); /* absolute timers called first */
1247#endif 1723#endif
1248 1724
1725#if EV_IDLE_ENABLE
1249 /* queue idle watchers unless io or timers are pending */ 1726 /* queue idle watchers unless other events are pending */
1250 if (idlecnt && !any_pending (EV_A)) 1727 idle_reify (EV_A);
1251 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1728#endif
1252 1729
1253 /* queue check watchers, to be executed first */ 1730 /* queue check watchers, to be executed first */
1254 if (expect_false (checkcnt)) 1731 if (expect_false (checkcnt))
1255 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1732 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1256 1733
1257 call_pending (EV_A); 1734 call_pending (EV_A);
1258
1259 if (expect_false (loop_done))
1260 break;
1261 } 1735 }
1736 while (expect_true (
1737 activecnt
1738 && !loop_done
1739 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1740 ));
1262 1741
1263 if (loop_done != 2) 1742 if (loop_done == EVUNLOOP_ONE)
1264 loop_done = 0; 1743 loop_done = EVUNLOOP_CANCEL;
1265} 1744}
1266 1745
1267void 1746void
1268ev_unloop (EV_P_ int how) 1747ev_unloop (EV_P_ int how)
1269{ 1748{
1270 loop_done = how; 1749 loop_done = how;
1271} 1750}
1272 1751
1273/*****************************************************************************/ 1752/*****************************************************************************/
1274 1753
1275inline void 1754void inline_size
1276wlist_add (WL *head, WL elem) 1755wlist_add (WL *head, WL elem)
1277{ 1756{
1278 elem->next = *head; 1757 elem->next = *head;
1279 *head = elem; 1758 *head = elem;
1280} 1759}
1281 1760
1282inline void 1761void inline_size
1283wlist_del (WL *head, WL elem) 1762wlist_del (WL *head, WL elem)
1284{ 1763{
1285 while (*head) 1764 while (*head)
1286 { 1765 {
1287 if (*head == elem) 1766 if (*head == elem)
… …
1292 1771
1293 head = &(*head)->next; 1772 head = &(*head)->next;
1294 } 1773 }
1295} 1774}
1296 1775
1297inline void 1776void inline_speed
1298ev_clear_pending (EV_P_ W w) 1777clear_pending (EV_P_ W w)
1299{ 1778{
1300 if (w->pending) 1779 if (w->pending)
1301 { 1780 {
1302 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1781 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1303 w->pending = 0; 1782 w->pending = 0;
1304 } 1783 }
1305} 1784}
1306 1785
1307inline void 1786int
1787ev_clear_pending (EV_P_ void *w)
1788{
1789 W w_ = (W)w;
1790 int pending = w_->pending;
1791
1792 if (expect_true (pending))
1793 {
1794 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1795 w_->pending = 0;
1796 p->w = 0;
1797 return p->events;
1798 }
1799 else
1800 return 0;
1801}
1802
1803void inline_size
1804pri_adjust (EV_P_ W w)
1805{
1806 int pri = w->priority;
1807 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1808 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1809 w->priority = pri;
1810}
1811
1812void inline_speed
1308ev_start (EV_P_ W w, int active) 1813ev_start (EV_P_ W w, int active)
1309{ 1814{
1310 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1815 pri_adjust (EV_A_ w);
1311 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1312
1313 w->active = active; 1816 w->active = active;
1314 ev_ref (EV_A); 1817 ev_ref (EV_A);
1315} 1818}
1316 1819
1317inline void 1820void inline_size
1318ev_stop (EV_P_ W w) 1821ev_stop (EV_P_ W w)
1319{ 1822{
1320 ev_unref (EV_A); 1823 ev_unref (EV_A);
1321 w->active = 0; 1824 w->active = 0;
1322} 1825}
1323 1826
1324/*****************************************************************************/ 1827/*****************************************************************************/
1325 1828
1326void 1829void noinline
1327ev_io_start (EV_P_ struct ev_io *w) 1830ev_io_start (EV_P_ ev_io *w)
1328{ 1831{
1329 int fd = w->fd; 1832 int fd = w->fd;
1330 1833
1331 if (expect_false (ev_is_active (w))) 1834 if (expect_false (ev_is_active (w)))
1332 return; 1835 return;
1333 1836
1334 assert (("ev_io_start called with negative fd", fd >= 0)); 1837 assert (("ev_io_start called with negative fd", fd >= 0));
1335 1838
1336 ev_start (EV_A_ (W)w, 1); 1839 ev_start (EV_A_ (W)w, 1);
1337 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1840 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1338 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1841 wlist_add (&anfds[fd].head, (WL)w);
1339 1842
1340 fd_change (EV_A_ fd); 1843 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1844 w->events &= ~EV_IOFDSET;
1341} 1845}
1342 1846
1343void 1847void noinline
1344ev_io_stop (EV_P_ struct ev_io *w) 1848ev_io_stop (EV_P_ ev_io *w)
1345{ 1849{
1346 ev_clear_pending (EV_A_ (W)w); 1850 clear_pending (EV_A_ (W)w);
1347 if (expect_false (!ev_is_active (w))) 1851 if (expect_false (!ev_is_active (w)))
1348 return; 1852 return;
1349 1853
1350 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1854 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1351 1855
1352 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1856 wlist_del (&anfds[w->fd].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1857 ev_stop (EV_A_ (W)w);
1354 1858
1355 fd_change (EV_A_ w->fd); 1859 fd_change (EV_A_ w->fd, 1);
1356} 1860}
1357 1861
1358void 1862void noinline
1359ev_timer_start (EV_P_ struct ev_timer *w) 1863ev_timer_start (EV_P_ ev_timer *w)
1360{ 1864{
1361 if (expect_false (ev_is_active (w))) 1865 if (expect_false (ev_is_active (w)))
1362 return; 1866 return;
1363 1867
1364 ((WT)w)->at += mn_now; 1868 ((WT)w)->at += mn_now;
1365 1869
1366 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1870 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1367 1871
1368 ev_start (EV_A_ (W)w, ++timercnt); 1872 ev_start (EV_A_ (W)w, ++timercnt);
1369 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1873 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1370 timers [timercnt - 1] = w; 1874 timers [timercnt - 1] = (WT)w;
1371 upheap ((WT *)timers, timercnt - 1); 1875 upheap (timers, timercnt - 1);
1372 1876
1373 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1877 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1374} 1878}
1375 1879
1376void 1880void noinline
1377ev_timer_stop (EV_P_ struct ev_timer *w) 1881ev_timer_stop (EV_P_ ev_timer *w)
1378{ 1882{
1379 ev_clear_pending (EV_A_ (W)w); 1883 clear_pending (EV_A_ (W)w);
1380 if (expect_false (!ev_is_active (w))) 1884 if (expect_false (!ev_is_active (w)))
1381 return; 1885 return;
1382 1886
1383 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1887 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1384 1888
1889 {
1890 int active = ((W)w)->active;
1891
1385 if (expect_true (((W)w)->active < timercnt--)) 1892 if (expect_true (--active < --timercnt))
1386 { 1893 {
1387 timers [((W)w)->active - 1] = timers [timercnt]; 1894 timers [active] = timers [timercnt];
1388 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1895 adjustheap (timers, timercnt, active);
1389 } 1896 }
1897 }
1390 1898
1391 ((WT)w)->at -= mn_now; 1899 ((WT)w)->at -= mn_now;
1392 1900
1393 ev_stop (EV_A_ (W)w); 1901 ev_stop (EV_A_ (W)w);
1394} 1902}
1395 1903
1396void 1904void noinline
1397ev_timer_again (EV_P_ struct ev_timer *w) 1905ev_timer_again (EV_P_ ev_timer *w)
1398{ 1906{
1399 if (ev_is_active (w)) 1907 if (ev_is_active (w))
1400 { 1908 {
1401 if (w->repeat) 1909 if (w->repeat)
1402 { 1910 {
1403 ((WT)w)->at = mn_now + w->repeat; 1911 ((WT)w)->at = mn_now + w->repeat;
1404 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1912 adjustheap (timers, timercnt, ((W)w)->active - 1);
1405 } 1913 }
1406 else 1914 else
1407 ev_timer_stop (EV_A_ w); 1915 ev_timer_stop (EV_A_ w);
1408 } 1916 }
1409 else if (w->repeat) 1917 else if (w->repeat)
… …
1411 w->at = w->repeat; 1919 w->at = w->repeat;
1412 ev_timer_start (EV_A_ w); 1920 ev_timer_start (EV_A_ w);
1413 } 1921 }
1414} 1922}
1415 1923
1416#if EV_PERIODICS 1924#if EV_PERIODIC_ENABLE
1417void 1925void noinline
1418ev_periodic_start (EV_P_ struct ev_periodic *w) 1926ev_periodic_start (EV_P_ ev_periodic *w)
1419{ 1927{
1420 if (expect_false (ev_is_active (w))) 1928 if (expect_false (ev_is_active (w)))
1421 return; 1929 return;
1422 1930
1423 if (w->reschedule_cb) 1931 if (w->reschedule_cb)
1424 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1932 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1425 else if (w->interval) 1933 else if (w->interval)
1426 { 1934 {
1427 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1935 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 */ 1936 /* 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; 1937 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1430 } 1938 }
1939 else
1940 ((WT)w)->at = w->offset;
1431 1941
1432 ev_start (EV_A_ (W)w, ++periodiccnt); 1942 ev_start (EV_A_ (W)w, ++periodiccnt);
1433 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1943 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1434 periodics [periodiccnt - 1] = w; 1944 periodics [periodiccnt - 1] = (WT)w;
1435 upheap ((WT *)periodics, periodiccnt - 1); 1945 upheap (periodics, periodiccnt - 1);
1436 1946
1437 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1947 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1438} 1948}
1439 1949
1440void 1950void noinline
1441ev_periodic_stop (EV_P_ struct ev_periodic *w) 1951ev_periodic_stop (EV_P_ ev_periodic *w)
1442{ 1952{
1443 ev_clear_pending (EV_A_ (W)w); 1953 clear_pending (EV_A_ (W)w);
1444 if (expect_false (!ev_is_active (w))) 1954 if (expect_false (!ev_is_active (w)))
1445 return; 1955 return;
1446 1956
1447 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1957 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1448 1958
1959 {
1960 int active = ((W)w)->active;
1961
1449 if (expect_true (((W)w)->active < periodiccnt--)) 1962 if (expect_true (--active < --periodiccnt))
1450 { 1963 {
1451 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1964 periodics [active] = periodics [periodiccnt];
1452 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1965 adjustheap (periodics, periodiccnt, active);
1453 } 1966 }
1967 }
1454 1968
1455 ev_stop (EV_A_ (W)w); 1969 ev_stop (EV_A_ (W)w);
1456} 1970}
1457 1971
1458void 1972void noinline
1459ev_periodic_again (EV_P_ struct ev_periodic *w) 1973ev_periodic_again (EV_P_ ev_periodic *w)
1460{ 1974{
1461 /* TODO: use adjustheap and recalculation */ 1975 /* TODO: use adjustheap and recalculation */
1462 ev_periodic_stop (EV_A_ w); 1976 ev_periodic_stop (EV_A_ w);
1463 ev_periodic_start (EV_A_ w); 1977 ev_periodic_start (EV_A_ w);
1464} 1978}
1465#endif 1979#endif
1466 1980
1467void
1468ev_idle_start (EV_P_ struct ev_idle *w)
1469{
1470 if (expect_false (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 (expect_false (!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 (expect_false (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 (expect_false (!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 (expect_false (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 (expect_false (!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 1981#ifndef SA_RESTART
1534# define SA_RESTART 0 1982# define SA_RESTART 0
1535#endif 1983#endif
1536 1984
1537void 1985void noinline
1538ev_signal_start (EV_P_ struct ev_signal *w) 1986ev_signal_start (EV_P_ ev_signal *w)
1539{ 1987{
1540#if EV_MULTIPLICITY 1988#if EV_MULTIPLICITY
1541 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1989 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542#endif 1990#endif
1543 if (expect_false (ev_is_active (w))) 1991 if (expect_false (ev_is_active (w)))
1544 return; 1992 return;
1545 1993
1546 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1994 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1547 1995
1996 evpipe_init (EV_A);
1997
1998 {
1999#ifndef _WIN32
2000 sigset_t full, prev;
2001 sigfillset (&full);
2002 sigprocmask (SIG_SETMASK, &full, &prev);
2003#endif
2004
2005 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2006
2007#ifndef _WIN32
2008 sigprocmask (SIG_SETMASK, &prev, 0);
2009#endif
2010 }
2011
1548 ev_start (EV_A_ (W)w, 1); 2012 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); 2013 wlist_add (&signals [w->signum - 1].head, (WL)w);
1551 2014
1552 if (!((WL)w)->next) 2015 if (!((WL)w)->next)
1553 { 2016 {
1554#if _WIN32 2017#if _WIN32
1555 signal (w->signum, sighandler); 2018 signal (w->signum, ev_sighandler);
1556#else 2019#else
1557 struct sigaction sa; 2020 struct sigaction sa;
1558 sa.sa_handler = sighandler; 2021 sa.sa_handler = ev_sighandler;
1559 sigfillset (&sa.sa_mask); 2022 sigfillset (&sa.sa_mask);
1560 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2023 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1561 sigaction (w->signum, &sa, 0); 2024 sigaction (w->signum, &sa, 0);
1562#endif 2025#endif
1563 } 2026 }
1564} 2027}
1565 2028
1566void 2029void noinline
1567ev_signal_stop (EV_P_ struct ev_signal *w) 2030ev_signal_stop (EV_P_ ev_signal *w)
1568{ 2031{
1569 ev_clear_pending (EV_A_ (W)w); 2032 clear_pending (EV_A_ (W)w);
1570 if (expect_false (!ev_is_active (w))) 2033 if (expect_false (!ev_is_active (w)))
1571 return; 2034 return;
1572 2035
1573 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2036 wlist_del (&signals [w->signum - 1].head, (WL)w);
1574 ev_stop (EV_A_ (W)w); 2037 ev_stop (EV_A_ (W)w);
1575 2038
1576 if (!signals [w->signum - 1].head) 2039 if (!signals [w->signum - 1].head)
1577 signal (w->signum, SIG_DFL); 2040 signal (w->signum, SIG_DFL);
1578} 2041}
1579 2042
1580void 2043void
1581ev_child_start (EV_P_ struct ev_child *w) 2044ev_child_start (EV_P_ ev_child *w)
1582{ 2045{
1583#if EV_MULTIPLICITY 2046#if EV_MULTIPLICITY
1584 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2047 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1585#endif 2048#endif
1586 if (expect_false (ev_is_active (w))) 2049 if (expect_false (ev_is_active (w)))
1587 return; 2050 return;
1588 2051
1589 ev_start (EV_A_ (W)w, 1); 2052 ev_start (EV_A_ (W)w, 1);
1590 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2053 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1591} 2054}
1592 2055
1593void 2056void
1594ev_child_stop (EV_P_ struct ev_child *w) 2057ev_child_stop (EV_P_ ev_child *w)
1595{ 2058{
1596 ev_clear_pending (EV_A_ (W)w); 2059 clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w))) 2060 if (expect_false (!ev_is_active (w)))
1598 return; 2061 return;
1599 2062
1600 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2063 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1601 ev_stop (EV_A_ (W)w); 2064 ev_stop (EV_A_ (W)w);
1602} 2065}
1603 2066
2067#if EV_STAT_ENABLE
2068
2069# ifdef _WIN32
2070# undef lstat
2071# define lstat(a,b) _stati64 (a,b)
2072# endif
2073
2074#define DEF_STAT_INTERVAL 5.0074891
2075#define MIN_STAT_INTERVAL 0.1074891
2076
2077static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2078
2079#if EV_USE_INOTIFY
2080# define EV_INOTIFY_BUFSIZE 8192
2081
2082static void noinline
2083infy_add (EV_P_ ev_stat *w)
2084{
2085 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);
2086
2087 if (w->wd < 0)
2088 {
2089 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2090
2091 /* monitor some parent directory for speedup hints */
2092 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2093 {
2094 char path [4096];
2095 strcpy (path, w->path);
2096
2097 do
2098 {
2099 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2100 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2101
2102 char *pend = strrchr (path, '/');
2103
2104 if (!pend)
2105 break; /* whoops, no '/', complain to your admin */
2106
2107 *pend = 0;
2108 w->wd = inotify_add_watch (fs_fd, path, mask);
2109 }
2110 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2111 }
2112 }
2113 else
2114 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2115
2116 if (w->wd >= 0)
2117 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2118}
2119
2120static void noinline
2121infy_del (EV_P_ ev_stat *w)
2122{
2123 int slot;
2124 int wd = w->wd;
2125
2126 if (wd < 0)
2127 return;
2128
2129 w->wd = -2;
2130 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2131 wlist_del (&fs_hash [slot].head, (WL)w);
2132
2133 /* remove this watcher, if others are watching it, they will rearm */
2134 inotify_rm_watch (fs_fd, wd);
2135}
2136
2137static void noinline
2138infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2139{
2140 if (slot < 0)
2141 /* overflow, need to check for all hahs slots */
2142 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2143 infy_wd (EV_A_ slot, wd, ev);
2144 else
2145 {
2146 WL w_;
2147
2148 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2149 {
2150 ev_stat *w = (ev_stat *)w_;
2151 w_ = w_->next; /* lets us remove this watcher and all before it */
2152
2153 if (w->wd == wd || wd == -1)
2154 {
2155 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2156 {
2157 w->wd = -1;
2158 infy_add (EV_A_ w); /* re-add, no matter what */
2159 }
2160
2161 stat_timer_cb (EV_A_ &w->timer, 0);
2162 }
2163 }
2164 }
2165}
2166
2167static void
2168infy_cb (EV_P_ ev_io *w, int revents)
2169{
2170 char buf [EV_INOTIFY_BUFSIZE];
2171 struct inotify_event *ev = (struct inotify_event *)buf;
2172 int ofs;
2173 int len = read (fs_fd, buf, sizeof (buf));
2174
2175 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2176 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2177}
2178
2179void inline_size
2180infy_init (EV_P)
2181{
2182 if (fs_fd != -2)
2183 return;
2184
2185 fs_fd = inotify_init ();
2186
2187 if (fs_fd >= 0)
2188 {
2189 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2190 ev_set_priority (&fs_w, EV_MAXPRI);
2191 ev_io_start (EV_A_ &fs_w);
2192 }
2193}
2194
2195void inline_size
2196infy_fork (EV_P)
2197{
2198 int slot;
2199
2200 if (fs_fd < 0)
2201 return;
2202
2203 close (fs_fd);
2204 fs_fd = inotify_init ();
2205
2206 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2207 {
2208 WL w_ = fs_hash [slot].head;
2209 fs_hash [slot].head = 0;
2210
2211 while (w_)
2212 {
2213 ev_stat *w = (ev_stat *)w_;
2214 w_ = w_->next; /* lets us add this watcher */
2215
2216 w->wd = -1;
2217
2218 if (fs_fd >= 0)
2219 infy_add (EV_A_ w); /* re-add, no matter what */
2220 else
2221 ev_timer_start (EV_A_ &w->timer);
2222 }
2223
2224 }
2225}
2226
2227#endif
2228
2229void
2230ev_stat_stat (EV_P_ ev_stat *w)
2231{
2232 if (lstat (w->path, &w->attr) < 0)
2233 w->attr.st_nlink = 0;
2234 else if (!w->attr.st_nlink)
2235 w->attr.st_nlink = 1;
2236}
2237
2238static void noinline
2239stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2240{
2241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2242
2243 /* we copy this here each the time so that */
2244 /* prev has the old value when the callback gets invoked */
2245 w->prev = w->attr;
2246 ev_stat_stat (EV_A_ w);
2247
2248 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2249 if (
2250 w->prev.st_dev != w->attr.st_dev
2251 || w->prev.st_ino != w->attr.st_ino
2252 || w->prev.st_mode != w->attr.st_mode
2253 || w->prev.st_nlink != w->attr.st_nlink
2254 || w->prev.st_uid != w->attr.st_uid
2255 || w->prev.st_gid != w->attr.st_gid
2256 || w->prev.st_rdev != w->attr.st_rdev
2257 || w->prev.st_size != w->attr.st_size
2258 || w->prev.st_atime != w->attr.st_atime
2259 || w->prev.st_mtime != w->attr.st_mtime
2260 || w->prev.st_ctime != w->attr.st_ctime
2261 ) {
2262 #if EV_USE_INOTIFY
2263 infy_del (EV_A_ w);
2264 infy_add (EV_A_ w);
2265 ev_stat_stat (EV_A_ w); /* avoid race... */
2266 #endif
2267
2268 ev_feed_event (EV_A_ w, EV_STAT);
2269 }
2270}
2271
2272void
2273ev_stat_start (EV_P_ ev_stat *w)
2274{
2275 if (expect_false (ev_is_active (w)))
2276 return;
2277
2278 /* since we use memcmp, we need to clear any padding data etc. */
2279 memset (&w->prev, 0, sizeof (ev_statdata));
2280 memset (&w->attr, 0, sizeof (ev_statdata));
2281
2282 ev_stat_stat (EV_A_ w);
2283
2284 if (w->interval < MIN_STAT_INTERVAL)
2285 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2286
2287 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2288 ev_set_priority (&w->timer, ev_priority (w));
2289
2290#if EV_USE_INOTIFY
2291 infy_init (EV_A);
2292
2293 if (fs_fd >= 0)
2294 infy_add (EV_A_ w);
2295 else
2296#endif
2297 ev_timer_start (EV_A_ &w->timer);
2298
2299 ev_start (EV_A_ (W)w, 1);
2300}
2301
2302void
2303ev_stat_stop (EV_P_ ev_stat *w)
2304{
2305 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w)))
2307 return;
2308
2309#if EV_USE_INOTIFY
2310 infy_del (EV_A_ w);
2311#endif
2312 ev_timer_stop (EV_A_ &w->timer);
2313
2314 ev_stop (EV_A_ (W)w);
2315}
2316#endif
2317
2318#if EV_IDLE_ENABLE
2319void
2320ev_idle_start (EV_P_ ev_idle *w)
2321{
2322 if (expect_false (ev_is_active (w)))
2323 return;
2324
2325 pri_adjust (EV_A_ (W)w);
2326
2327 {
2328 int active = ++idlecnt [ABSPRI (w)];
2329
2330 ++idleall;
2331 ev_start (EV_A_ (W)w, active);
2332
2333 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2334 idles [ABSPRI (w)][active - 1] = w;
2335 }
2336}
2337
2338void
2339ev_idle_stop (EV_P_ ev_idle *w)
2340{
2341 clear_pending (EV_A_ (W)w);
2342 if (expect_false (!ev_is_active (w)))
2343 return;
2344
2345 {
2346 int active = ((W)w)->active;
2347
2348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2349 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2350
2351 ev_stop (EV_A_ (W)w);
2352 --idleall;
2353 }
2354}
2355#endif
2356
2357void
2358ev_prepare_start (EV_P_ ev_prepare *w)
2359{
2360 if (expect_false (ev_is_active (w)))
2361 return;
2362
2363 ev_start (EV_A_ (W)w, ++preparecnt);
2364 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2365 prepares [preparecnt - 1] = w;
2366}
2367
2368void
2369ev_prepare_stop (EV_P_ ev_prepare *w)
2370{
2371 clear_pending (EV_A_ (W)w);
2372 if (expect_false (!ev_is_active (w)))
2373 return;
2374
2375 {
2376 int active = ((W)w)->active;
2377 prepares [active - 1] = prepares [--preparecnt];
2378 ((W)prepares [active - 1])->active = active;
2379 }
2380
2381 ev_stop (EV_A_ (W)w);
2382}
2383
2384void
2385ev_check_start (EV_P_ ev_check *w)
2386{
2387 if (expect_false (ev_is_active (w)))
2388 return;
2389
2390 ev_start (EV_A_ (W)w, ++checkcnt);
2391 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2392 checks [checkcnt - 1] = w;
2393}
2394
2395void
2396ev_check_stop (EV_P_ ev_check *w)
2397{
2398 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w)))
2400 return;
2401
2402 {
2403 int active = ((W)w)->active;
2404 checks [active - 1] = checks [--checkcnt];
2405 ((W)checks [active - 1])->active = active;
2406 }
2407
2408 ev_stop (EV_A_ (W)w);
2409}
2410
2411#if EV_EMBED_ENABLE
2412void noinline
2413ev_embed_sweep (EV_P_ ev_embed *w)
2414{
2415 ev_loop (w->other, EVLOOP_NONBLOCK);
2416}
2417
2418static void
2419embed_io_cb (EV_P_ ev_io *io, int revents)
2420{
2421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2422
2423 if (ev_cb (w))
2424 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2425 else
2426 ev_loop (w->other, EVLOOP_NONBLOCK);
2427}
2428
2429static void
2430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2431{
2432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2433
2434 {
2435 struct ev_loop *loop = w->other;
2436
2437 while (fdchangecnt)
2438 {
2439 fd_reify (EV_A);
2440 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2441 }
2442 }
2443}
2444
2445#if 0
2446static void
2447embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2448{
2449 ev_idle_stop (EV_A_ idle);
2450}
2451#endif
2452
2453void
2454ev_embed_start (EV_P_ ev_embed *w)
2455{
2456 if (expect_false (ev_is_active (w)))
2457 return;
2458
2459 {
2460 struct ev_loop *loop = w->other;
2461 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2462 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2463 }
2464
2465 ev_set_priority (&w->io, ev_priority (w));
2466 ev_io_start (EV_A_ &w->io);
2467
2468 ev_prepare_init (&w->prepare, embed_prepare_cb);
2469 ev_set_priority (&w->prepare, EV_MINPRI);
2470 ev_prepare_start (EV_A_ &w->prepare);
2471
2472 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2473
2474 ev_start (EV_A_ (W)w, 1);
2475}
2476
2477void
2478ev_embed_stop (EV_P_ ev_embed *w)
2479{
2480 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w)))
2482 return;
2483
2484 ev_io_stop (EV_A_ &w->io);
2485 ev_prepare_stop (EV_A_ &w->prepare);
2486
2487 ev_stop (EV_A_ (W)w);
2488}
2489#endif
2490
2491#if EV_FORK_ENABLE
2492void
2493ev_fork_start (EV_P_ ev_fork *w)
2494{
2495 if (expect_false (ev_is_active (w)))
2496 return;
2497
2498 ev_start (EV_A_ (W)w, ++forkcnt);
2499 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2500 forks [forkcnt - 1] = w;
2501}
2502
2503void
2504ev_fork_stop (EV_P_ ev_fork *w)
2505{
2506 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w)))
2508 return;
2509
2510 {
2511 int active = ((W)w)->active;
2512 forks [active - 1] = forks [--forkcnt];
2513 ((W)forks [active - 1])->active = active;
2514 }
2515
2516 ev_stop (EV_A_ (W)w);
2517}
2518#endif
2519
2520#if EV_ASYNC_ENABLE
2521void
2522ev_async_start (EV_P_ ev_async *w)
2523{
2524 if (expect_false (ev_is_active (w)))
2525 return;
2526
2527 evpipe_init (EV_A);
2528
2529 ev_start (EV_A_ (W)w, ++asynccnt);
2530 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2531 asyncs [asynccnt - 1] = w;
2532}
2533
2534void
2535ev_async_stop (EV_P_ ev_async *w)
2536{
2537 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w)))
2539 return;
2540
2541 {
2542 int active = ((W)w)->active;
2543 asyncs [active - 1] = asyncs [--asynccnt];
2544 ((W)asyncs [active - 1])->active = active;
2545 }
2546
2547 ev_stop (EV_A_ (W)w);
2548}
2549
2550void
2551ev_async_send (EV_P_ ev_async *w)
2552{
2553 w->sent = 1;
2554 evpipe_write (EV_A_ &gotasync);
2555}
2556#endif
2557
1604/*****************************************************************************/ 2558/*****************************************************************************/
1605 2559
1606struct ev_once 2560struct ev_once
1607{ 2561{
1608 struct ev_io io; 2562 ev_io io;
1609 struct ev_timer to; 2563 ev_timer to;
1610 void (*cb)(int revents, void *arg); 2564 void (*cb)(int revents, void *arg);
1611 void *arg; 2565 void *arg;
1612}; 2566};
1613 2567
1614static void 2568static void
… …
1623 2577
1624 cb (revents, arg); 2578 cb (revents, arg);
1625} 2579}
1626 2580
1627static void 2581static void
1628once_cb_io (EV_P_ struct ev_io *w, int revents) 2582once_cb_io (EV_P_ ev_io *w, int revents)
1629{ 2583{
1630 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1631} 2585}
1632 2586
1633static void 2587static void
1634once_cb_to (EV_P_ struct ev_timer *w, int revents) 2588once_cb_to (EV_P_ ev_timer *w, int revents)
1635{ 2589{
1636 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2590 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1637} 2591}
1638 2592
1639void 2593void
… …
1663 ev_timer_set (&once->to, timeout, 0.); 2617 ev_timer_set (&once->to, timeout, 0.);
1664 ev_timer_start (EV_A_ &once->to); 2618 ev_timer_start (EV_A_ &once->to);
1665 } 2619 }
1666} 2620}
1667 2621
2622#if EV_MULTIPLICITY
2623 #include "ev_wrap.h"
2624#endif
2625
1668#ifdef __cplusplus 2626#ifdef __cplusplus
1669} 2627}
1670#endif 2628#endif
1671 2629

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