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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 1.239 by root, Thu May 8 20:52:13 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
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 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#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at
332
333#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
186static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
187 338
188#ifdef _WIN32 339#ifdef _WIN32
189# include "ev_win32.c" 340# include "ev_win32.c"
190#endif 341#endif
191 342
192/*****************************************************************************/ 343/*****************************************************************************/
193 344
194static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
195 346
347void
196void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
197{ 349{
198 syserr_cb = cb; 350 syserr_cb = cb;
199} 351}
200 352
201static void 353static void noinline
202syserr (const char *msg) 354syserr (const char *msg)
203{ 355{
204 if (!msg) 356 if (!msg)
205 msg = "(libev) system error"; 357 msg = "(libev) system error";
206 358
… …
211 perror (msg); 363 perror (msg);
212 abort (); 364 abort ();
213 } 365 }
214} 366}
215 367
368static void *
369ev_realloc_emul (void *ptr, long size)
370{
371 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here.
374 */
375
376 if (size)
377 return realloc (ptr, size);
378
379 free (ptr);
380 return 0;
381}
382
216static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
217 384
385void
218void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
219{ 387{
220 alloc = cb; 388 alloc = cb;
221} 389}
222 390
223static void * 391inline_speed void *
224ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
225{ 393{
226 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
227 395
228 if (!ptr && size) 396 if (!ptr && size)
229 { 397 {
230 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
231 abort (); 399 abort ();
… …
252typedef struct 420typedef struct
253{ 421{
254 W w; 422 W w;
255 int events; 423 int events;
256} ANPENDING; 424} ANPENDING;
425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
257 432
258#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
259 434
260 struct ev_loop 435 struct ev_loop
261 { 436 {
… …
295 gettimeofday (&tv, 0); 470 gettimeofday (&tv, 0);
296 return tv.tv_sec + tv.tv_usec * 1e-6; 471 return tv.tv_sec + tv.tv_usec * 1e-6;
297#endif 472#endif
298} 473}
299 474
300inline ev_tstamp 475ev_tstamp inline_size
301get_clock (void) 476get_clock (void)
302{ 477{
303#if EV_USE_MONOTONIC 478#if EV_USE_MONOTONIC
304 if (expect_true (have_monotonic)) 479 if (expect_true (have_monotonic))
305 { 480 {
… …
318{ 493{
319 return ev_rt_now; 494 return ev_rt_now;
320} 495}
321#endif 496#endif
322 497
323#define array_roundsize(type,n) (((n) | 4) & ~3) 498void
499ev_sleep (ev_tstamp delay)
500{
501 if (delay > 0.)
502 {
503#if EV_USE_NANOSLEEP
504 struct timespec ts;
505
506 ts.tv_sec = (time_t)delay;
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0);
510#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3));
512#else
513 struct timeval tv;
514
515 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517
518 select (0, 0, 0, 0, &tv);
519#endif
520 }
521}
522
523/*****************************************************************************/
524
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526
527int inline_size
528array_nextsize (int elem, int cur, int cnt)
529{
530 int ncur = cur + 1;
531
532 do
533 ncur <<= 1;
534 while (cnt > ncur);
535
536 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
537 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
538 {
539 ncur *= elem;
540 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
541 ncur = ncur - sizeof (void *) * 4;
542 ncur /= elem;
543 }
544
545 return ncur;
546}
547
548static noinline void *
549array_realloc (int elem, void *base, int *cur, int cnt)
550{
551 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur);
553}
324 554
325#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
326 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
327 { \ 557 { \
328 int newcnt = cur; \ 558 int ocur_ = (cur); \
329 do \ 559 (base) = (type *)array_realloc \
330 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
331 newcnt = array_roundsize (type, newcnt << 1); \ 561 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 } 562 }
339 563
564#if 0
340#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
341 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
342 { \ 567 { \
343 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
344 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
346 } 571 }
572#endif
347 573
348#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
349 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
350 576
351/*****************************************************************************/ 577/*****************************************************************************/
352 578
353static void 579void noinline
580ev_feed_event (EV_P_ void *w, int revents)
581{
582 W w_ = (W)w;
583 int pri = ABSPRI (w_);
584
585 if (expect_false (w_->pending))
586 pendings [pri][w_->pending - 1].events |= revents;
587 else
588 {
589 w_->pending = ++pendingcnt [pri];
590 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
591 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents;
593 }
594}
595
596void inline_speed
597queue_events (EV_P_ W *events, int eventcnt, int type)
598{
599 int i;
600
601 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type);
603}
604
605/*****************************************************************************/
606
607void inline_size
354anfds_init (ANFD *base, int count) 608anfds_init (ANFD *base, int count)
355{ 609{
356 while (count--) 610 while (count--)
357 { 611 {
358 base->head = 0; 612 base->head = 0;
… …
361 615
362 ++base; 616 ++base;
363 } 617 }
364} 618}
365 619
366void 620void 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) 621fd_event (EV_P_ int fd, int revents)
394{ 622{
395 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
396 struct ev_io *w; 624 ev_io *w;
397 625
398 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 626 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
399 { 627 {
400 int ev = w->events & revents; 628 int ev = w->events & revents;
401 629
402 if (ev) 630 if (ev)
403 ev_feed_event (EV_A_ (W)w, ev); 631 ev_feed_event (EV_A_ (W)w, ev);
… …
405} 633}
406 634
407void 635void
408ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
409{ 637{
638 if (fd >= 0 && fd < anfdmax)
410 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
411} 640}
412 641
413/*****************************************************************************/ 642void inline_size
414
415static void
416fd_reify (EV_P) 643fd_reify (EV_P)
417{ 644{
418 int i; 645 int i;
419 646
420 for (i = 0; i < fdchangecnt; ++i) 647 for (i = 0; i < fdchangecnt; ++i)
421 { 648 {
422 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
423 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 651 ev_io *w;
425 652
426 int events = 0; 653 unsigned char events = 0;
427 654
428 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
429 events |= w->events; 656 events |= (unsigned char)w->events;
430 657
431#if EV_SELECT_IS_WINSOCKET 658#if EV_SELECT_IS_WINSOCKET
432 if (events) 659 if (events)
433 { 660 {
434 unsigned long argp; 661 unsigned long argp;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
435 anfd->handle = _get_osfhandle (fd); 665 anfd->handle = _get_osfhandle (fd);
666 #endif
436 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
437 } 668 }
438#endif 669#endif
439 670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
440 anfd->reify = 0; 675 anfd->reify = 0;
441
442 method_modify (EV_A_ fd, anfd->events, events);
443 anfd->events = events; 676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events);
680 }
444 } 681 }
445 682
446 fdchangecnt = 0; 683 fdchangecnt = 0;
447} 684}
448 685
449static void 686void inline_size
450fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
451{ 688{
452 if (anfds [fd].reify) 689 unsigned char reify = anfds [fd].reify;
453 return;
454
455 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
456 691
692 if (expect_true (!reify))
693 {
457 ++fdchangecnt; 694 ++fdchangecnt;
458 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
459 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
460} 698}
461 699
462static void 700void inline_speed
463fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
464{ 702{
465 struct ev_io *w; 703 ev_io *w;
466 704
467 while ((w = (struct ev_io *)anfds [fd].head)) 705 while ((w = (ev_io *)anfds [fd].head))
468 { 706 {
469 ev_io_stop (EV_A_ w); 707 ev_io_stop (EV_A_ w);
470 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
471 } 709 }
472} 710}
473 711
474static int 712int inline_size
475fd_valid (int fd) 713fd_valid (int fd)
476{ 714{
477#ifdef _WIN32 715#ifdef _WIN32
478 return _get_osfhandle (fd) != -1; 716 return _get_osfhandle (fd) != -1;
479#else 717#else
480 return fcntl (fd, F_GETFD) != -1; 718 return fcntl (fd, F_GETFD) != -1;
481#endif 719#endif
482} 720}
483 721
484/* called on EBADF to verify fds */ 722/* called on EBADF to verify fds */
485static void 723static void noinline
486fd_ebadf (EV_P) 724fd_ebadf (EV_P)
487{ 725{
488 int fd; 726 int fd;
489 727
490 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
… …
492 if (!fd_valid (fd) == -1 && errno == EBADF) 730 if (!fd_valid (fd) == -1 && errno == EBADF)
493 fd_kill (EV_A_ fd); 731 fd_kill (EV_A_ fd);
494} 732}
495 733
496/* called on ENOMEM in select/poll to kill some fds and retry */ 734/* called on ENOMEM in select/poll to kill some fds and retry */
497static void 735static void noinline
498fd_enomem (EV_P) 736fd_enomem (EV_P)
499{ 737{
500 int fd; 738 int fd;
501 739
502 for (fd = anfdmax; fd--; ) 740 for (fd = anfdmax; fd--; )
… …
505 fd_kill (EV_A_ fd); 743 fd_kill (EV_A_ fd);
506 return; 744 return;
507 } 745 }
508} 746}
509 747
510/* usually called after fork if method needs to re-arm all fds from scratch */ 748/* usually called after fork if backend needs to re-arm all fds from scratch */
511static void 749static void noinline
512fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
513{ 751{
514 int fd; 752 int fd;
515 753
516 /* this should be highly optimised to not do anything but set a flag */
517 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
518 if (anfds [fd].events) 755 if (anfds [fd].events)
519 { 756 {
520 anfds [fd].events = 0; 757 anfds [fd].events = 0;
521 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
522 } 759 }
523} 760}
524 761
525/*****************************************************************************/ 762/*****************************************************************************/
526 763
527static void 764/*
765 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers.
769 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP
772
773#define DHEAP 4
774#define HEAP0 (DHEAP - 1) /* index of first element in heap */
775
776/* towards the root */
777void inline_speed
528upheap (WT *heap, int k) 778upheap (WT *heap, int k)
529{ 779{
530 WT w = heap [k]; 780 WT w = heap [k];
531 781
532 while (k && heap [k >> 1]->at > w->at) 782 for (;;)
533 { 783 {
784 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
785
786 if (p == k || heap [p]->at <= w->at)
787 break;
788
534 heap [k] = heap [k >> 1]; 789 heap [k] = heap [p];
535 ((W)heap [k])->active = k + 1; 790 ev_active (heap [k]) = k;
536 k >>= 1; 791 k = p;
537 } 792 }
538 793
539 heap [k] = w; 794 heap [k] = w;
540 ((W)heap [k])->active = k + 1; 795 ev_active (heap [k]) = k;
541
542} 796}
543 797
544static void 798/* away from the root */
799void inline_speed
545downheap (WT *heap, int N, int k) 800downheap (WT *heap, int N, int k)
546{ 801{
547 WT w = heap [k]; 802 WT w = heap [k];
803 WT *E = heap + N + HEAP0;
548 804
549 while (k < (N >> 1)) 805 for (;;)
550 { 806 {
551 int j = k << 1; 807 ev_tstamp minat;
808 WT *minpos;
809 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
552 810
553 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 811 // find minimum child
812 if (expect_true (pos + DHEAP - 1 < E))
554 ++j; 813 {
814 /* fast path */
815 (minpos = pos + 0), (minat = (*minpos)->at);
816 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
817 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
818 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
819 }
820 else
821 {
822 /* slow path */
823 if (pos >= E)
824 break;
825 (minpos = pos + 0), (minat = (*minpos)->at);
826 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
827 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
828 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
829 }
555 830
556 if (w->at <= heap [j]->at) 831 if (w->at <= minat)
557 break; 832 break;
558 833
559 heap [k] = heap [j]; 834 ev_active (*minpos) = k;
560 ((W)heap [k])->active = k + 1; 835 heap [k] = *minpos;
561 k = j; 836
837 k = minpos - heap;
562 } 838 }
563 839
564 heap [k] = w; 840 heap [k] = w;
841 ev_active (heap [k]) = k;
842}
843
844#else // 4HEAP
845
846#define HEAP0 1
847
848/* towards the root */
849void inline_speed
850upheap (WT *heap, int k)
851{
852 WT w = heap [k];
853
854 for (;;)
855 {
856 int p = k >> 1;
857
858 /* maybe we could use a dummy element at heap [0]? */
859 if (!p || heap [p]->at <= w->at)
860 break;
861
862 heap [k] = heap [p];
863 ev_active (heap [k]) = k;
864 k = p;
865 }
866
867 heap [k] = w;
868 ev_active (heap [k]) = k;
869}
870
871/* away from the root */
872void inline_speed
873downheap (WT *heap, int N, int k)
874{
875 WT w = heap [k];
876
877 for (;;)
878 {
879 int c = k << 1;
880
881 if (c > N)
882 break;
883
884 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
885 ? 1 : 0;
886
887 if (w->at <= heap [c]->at)
888 break;
889
890 heap [k] = heap [c];
565 ((W)heap [k])->active = k + 1; 891 ((W)heap [k])->active = k;
566} 892
893 k = c;
894 }
567 895
568inline void 896 heap [k] = w;
897 ev_active (heap [k]) = k;
898}
899#endif
900
901void inline_size
569adjustheap (WT *heap, int N, int k) 902adjustheap (WT *heap, int N, int k)
570{ 903{
571 upheap (heap, k); 904 upheap (heap, k);
572 downheap (heap, N, k); 905 downheap (heap, N, k);
573} 906}
… …
575/*****************************************************************************/ 908/*****************************************************************************/
576 909
577typedef struct 910typedef struct
578{ 911{
579 WL head; 912 WL head;
580 sig_atomic_t volatile gotsig; 913 EV_ATOMIC_T gotsig;
581} ANSIG; 914} ANSIG;
582 915
583static ANSIG *signals; 916static ANSIG *signals;
584static int signalmax; 917static int signalmax;
585 918
586static int sigpipe [2]; 919static EV_ATOMIC_T gotsig;
587static sig_atomic_t volatile gotsig;
588static struct ev_io sigev;
589 920
590static void 921void inline_size
591signals_init (ANSIG *base, int count) 922signals_init (ANSIG *base, int count)
592{ 923{
593 while (count--) 924 while (count--)
594 { 925 {
595 base->head = 0; 926 base->head = 0;
… …
597 928
598 ++base; 929 ++base;
599 } 930 }
600} 931}
601 932
602static void 933/*****************************************************************************/
603sighandler (int signum)
604{
605#if _WIN32
606 signal (signum, sighandler);
607#endif
608 934
609 signals [signum - 1].gotsig = 1; 935void 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) 936fd_intern (int fd)
655{ 937{
656#ifdef _WIN32 938#ifdef _WIN32
657 int arg = 1; 939 int arg = 1;
658 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 940 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
660 fcntl (fd, F_SETFD, FD_CLOEXEC); 942 fcntl (fd, F_SETFD, FD_CLOEXEC);
661 fcntl (fd, F_SETFL, O_NONBLOCK); 943 fcntl (fd, F_SETFL, O_NONBLOCK);
662#endif 944#endif
663} 945}
664 946
947static void noinline
948evpipe_init (EV_P)
949{
950 if (!ev_is_active (&pipeev))
951 {
952#if EV_USE_EVENTFD
953 if ((evfd = eventfd (0, 0)) >= 0)
954 {
955 evpipe [0] = -1;
956 fd_intern (evfd);
957 ev_io_set (&pipeev, evfd, EV_READ);
958 }
959 else
960#endif
961 {
962 while (pipe (evpipe))
963 syserr ("(libev) error creating signal/async pipe");
964
965 fd_intern (evpipe [0]);
966 fd_intern (evpipe [1]);
967 ev_io_set (&pipeev, evpipe [0], EV_READ);
968 }
969
970 ev_io_start (EV_A_ &pipeev);
971 ev_unref (EV_A); /* watcher should not keep loop alive */
972 }
973}
974
975void inline_size
976evpipe_write (EV_P_ EV_ATOMIC_T *flag)
977{
978 if (!*flag)
979 {
980 int old_errno = errno; /* save errno because write might clobber it */
981
982 *flag = 1;
983
984#if EV_USE_EVENTFD
985 if (evfd >= 0)
986 {
987 uint64_t counter = 1;
988 write (evfd, &counter, sizeof (uint64_t));
989 }
990 else
991#endif
992 write (evpipe [1], &old_errno, 1);
993
994 errno = old_errno;
995 }
996}
997
665static void 998static void
666siginit (EV_P) 999pipecb (EV_P_ ev_io *iow, int revents)
667{ 1000{
668 fd_intern (sigpipe [0]); 1001#if EV_USE_EVENTFD
669 fd_intern (sigpipe [1]); 1002 if (evfd >= 0)
1003 {
1004 uint64_t counter;
1005 read (evfd, &counter, sizeof (uint64_t));
1006 }
1007 else
1008#endif
1009 {
1010 char dummy;
1011 read (evpipe [0], &dummy, 1);
1012 }
670 1013
671 ev_io_set (&sigev, sigpipe [0], EV_READ); 1014 if (gotsig && ev_is_default_loop (EV_A))
672 ev_io_start (EV_A_ &sigev); 1015 {
673 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1016 int signum;
1017 gotsig = 0;
1018
1019 for (signum = signalmax; signum--; )
1020 if (signals [signum].gotsig)
1021 ev_feed_signal_event (EV_A_ signum + 1);
1022 }
1023
1024#if EV_ASYNC_ENABLE
1025 if (gotasync)
1026 {
1027 int i;
1028 gotasync = 0;
1029
1030 for (i = asynccnt; i--; )
1031 if (asyncs [i]->sent)
1032 {
1033 asyncs [i]->sent = 0;
1034 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1035 }
1036 }
1037#endif
674} 1038}
675 1039
676/*****************************************************************************/ 1040/*****************************************************************************/
677 1041
678static struct ev_child *childs [PID_HASHSIZE]; 1042static void
1043ev_sighandler (int signum)
1044{
1045#if EV_MULTIPLICITY
1046 struct ev_loop *loop = &default_loop_struct;
1047#endif
1048
1049#if _WIN32
1050 signal (signum, ev_sighandler);
1051#endif
1052
1053 signals [signum - 1].gotsig = 1;
1054 evpipe_write (EV_A_ &gotsig);
1055}
1056
1057void noinline
1058ev_feed_signal_event (EV_P_ int signum)
1059{
1060 WL w;
1061
1062#if EV_MULTIPLICITY
1063 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1064#endif
1065
1066 --signum;
1067
1068 if (signum < 0 || signum >= signalmax)
1069 return;
1070
1071 signals [signum].gotsig = 0;
1072
1073 for (w = signals [signum].head; w; w = w->next)
1074 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1075}
1076
1077/*****************************************************************************/
1078
1079static WL childs [EV_PID_HASHSIZE];
679 1080
680#ifndef _WIN32 1081#ifndef _WIN32
681 1082
682static struct ev_signal childev; 1083static ev_signal childev;
1084
1085#ifndef WIFCONTINUED
1086# define WIFCONTINUED(status) 0
1087#endif
1088
1089void inline_speed
1090child_reap (EV_P_ int chain, int pid, int status)
1091{
1092 ev_child *w;
1093 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1094
1095 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1096 {
1097 if ((w->pid == pid || !w->pid)
1098 && (!traced || (w->flags & 1)))
1099 {
1100 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1101 w->rpid = pid;
1102 w->rstatus = status;
1103 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1104 }
1105 }
1106}
683 1107
684#ifndef WCONTINUED 1108#ifndef WCONTINUED
685# define WCONTINUED 0 1109# define WCONTINUED 0
686#endif 1110#endif
687 1111
688static void 1112static 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) 1113childcb (EV_P_ ev_signal *sw, int revents)
705{ 1114{
706 int pid, status; 1115 int pid, status;
707 1116
1117 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
708 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1118 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
709 { 1119 if (!WCONTINUED
1120 || errno != EINVAL
1121 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1122 return;
1123
710 /* make sure we are called again until all childs have been reaped */ 1124 /* make sure we are called again until all children have been reaped */
1125 /* 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); 1126 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
712 1127
713 child_reap (EV_A_ sw, pid, pid, status); 1128 child_reap (EV_A_ pid, pid, status);
1129 if (EV_PID_HASHSIZE > 1)
714 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1130 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
715 }
716} 1131}
717 1132
718#endif 1133#endif
719 1134
720/*****************************************************************************/ 1135/*****************************************************************************/
… …
746{ 1161{
747 return EV_VERSION_MINOR; 1162 return EV_VERSION_MINOR;
748} 1163}
749 1164
750/* return true if we are running with elevated privileges and should ignore env variables */ 1165/* return true if we are running with elevated privileges and should ignore env variables */
751static int 1166int inline_size
752enable_secure (void) 1167enable_secure (void)
753{ 1168{
754#ifdef _WIN32 1169#ifdef _WIN32
755 return 0; 1170 return 0;
756#else 1171#else
… …
758 || getgid () != getegid (); 1173 || getgid () != getegid ();
759#endif 1174#endif
760} 1175}
761 1176
762unsigned int 1177unsigned int
763ev_method (EV_P) 1178ev_supported_backends (void)
764{ 1179{
765 return method; 1180 unsigned int flags = 0;
766}
767 1181
768static void 1182 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1183 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1184 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1185 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1186 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1187
1188 return flags;
1189}
1190
1191unsigned int
1192ev_recommended_backends (void)
1193{
1194 unsigned int flags = ev_supported_backends ();
1195
1196#ifndef __NetBSD__
1197 /* kqueue is borked on everything but netbsd apparently */
1198 /* it usually doesn't work correctly on anything but sockets and pipes */
1199 flags &= ~EVBACKEND_KQUEUE;
1200#endif
1201#ifdef __APPLE__
1202 // flags &= ~EVBACKEND_KQUEUE; for documentation
1203 flags &= ~EVBACKEND_POLL;
1204#endif
1205
1206 return flags;
1207}
1208
1209unsigned int
1210ev_embeddable_backends (void)
1211{
1212 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1213
1214 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1215 /* please fix it and tell me how to detect the fix */
1216 flags &= ~EVBACKEND_EPOLL;
1217
1218 return flags;
1219}
1220
1221unsigned int
1222ev_backend (EV_P)
1223{
1224 return backend;
1225}
1226
1227unsigned int
1228ev_loop_count (EV_P)
1229{
1230 return loop_count;
1231}
1232
1233void
1234ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1235{
1236 io_blocktime = interval;
1237}
1238
1239void
1240ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1241{
1242 timeout_blocktime = interval;
1243}
1244
1245static void noinline
769loop_init (EV_P_ unsigned int flags) 1246loop_init (EV_P_ unsigned int flags)
770{ 1247{
771 if (!method) 1248 if (!backend)
772 { 1249 {
773#if EV_USE_MONOTONIC 1250#if EV_USE_MONOTONIC
774 { 1251 {
775 struct timespec ts; 1252 struct timespec ts;
776 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1253 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
777 have_monotonic = 1; 1254 have_monotonic = 1;
778 } 1255 }
779#endif 1256#endif
780 1257
781 ev_rt_now = ev_time (); 1258 ev_rt_now = ev_time ();
782 mn_now = get_clock (); 1259 mn_now = get_clock ();
783 now_floor = mn_now; 1260 now_floor = mn_now;
784 rtmn_diff = ev_rt_now - mn_now; 1261 rtmn_diff = ev_rt_now - mn_now;
785 1262
786 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 1263 io_blocktime = 0.;
1264 timeout_blocktime = 0.;
1265 backend = 0;
1266 backend_fd = -1;
1267 gotasync = 0;
1268#if EV_USE_INOTIFY
1269 fs_fd = -2;
1270#endif
1271
1272 /* pid check not overridable via env */
1273#ifndef _WIN32
1274 if (flags & EVFLAG_FORKCHECK)
1275 curpid = getpid ();
1276#endif
1277
1278 if (!(flags & EVFLAG_NOENV)
1279 && !enable_secure ()
1280 && getenv ("LIBEV_FLAGS"))
787 flags = atoi (getenv ("LIBEV_FLAGS")); 1281 flags = atoi (getenv ("LIBEV_FLAGS"));
788 1282
789 if (!(flags & 0x0000ffff)) 1283 if (!(flags & 0x0000ffffU))
790 flags |= 0x0000ffff; 1284 flags |= ev_recommended_backends ();
791 1285
792 method = 0;
793#if EV_USE_PORT 1286#if EV_USE_PORT
794 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 1287 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795#endif 1288#endif
796#if EV_USE_KQUEUE 1289#if EV_USE_KQUEUE
797 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 1290 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798#endif 1291#endif
799#if EV_USE_EPOLL 1292#if EV_USE_EPOLL
800 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 1293 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801#endif 1294#endif
802#if EV_USE_POLL 1295#if EV_USE_POLL
803 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 1296 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804#endif 1297#endif
805#if EV_USE_SELECT 1298#if EV_USE_SELECT
806 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 1299 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807#endif 1300#endif
808 1301
809 ev_init (&sigev, sigcb); 1302 ev_init (&pipeev, pipecb);
810 ev_set_priority (&sigev, EV_MAXPRI); 1303 ev_set_priority (&pipeev, EV_MAXPRI);
811 } 1304 }
812} 1305}
813 1306
814void 1307static void noinline
815loop_destroy (EV_P) 1308loop_destroy (EV_P)
816{ 1309{
817 int i; 1310 int i;
818 1311
1312 if (ev_is_active (&pipeev))
1313 {
1314 ev_ref (EV_A); /* signal watcher */
1315 ev_io_stop (EV_A_ &pipeev);
1316
1317#if EV_USE_EVENTFD
1318 if (evfd >= 0)
1319 close (evfd);
1320#endif
1321
1322 if (evpipe [0] >= 0)
1323 {
1324 close (evpipe [0]);
1325 close (evpipe [1]);
1326 }
1327 }
1328
1329#if EV_USE_INOTIFY
1330 if (fs_fd >= 0)
1331 close (fs_fd);
1332#endif
1333
1334 if (backend_fd >= 0)
1335 close (backend_fd);
1336
819#if EV_USE_PORT 1337#if EV_USE_PORT
820 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 1338 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821#endif 1339#endif
822#if EV_USE_KQUEUE 1340#if EV_USE_KQUEUE
823 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1341 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824#endif 1342#endif
825#if EV_USE_EPOLL 1343#if EV_USE_EPOLL
826 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1344 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827#endif 1345#endif
828#if EV_USE_POLL 1346#if EV_USE_POLL
829 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1347 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830#endif 1348#endif
831#if EV_USE_SELECT 1349#if EV_USE_SELECT
832 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1350 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833#endif 1351#endif
834 1352
835 for (i = NUMPRI; i--; ) 1353 for (i = NUMPRI; i--; )
1354 {
836 array_free (pending, [i]); 1355 array_free (pending, [i]);
1356#if EV_IDLE_ENABLE
1357 array_free (idle, [i]);
1358#endif
1359 }
1360
1361 ev_free (anfds); anfdmax = 0;
837 1362
838 /* have to use the microsoft-never-gets-it-right macro */ 1363 /* have to use the microsoft-never-gets-it-right macro */
839 array_free (fdchange, EMPTY0); 1364 array_free (fdchange, EMPTY);
840 array_free (timer, EMPTY0); 1365 array_free (timer, EMPTY);
841#if EV_PERIODICS 1366#if EV_PERIODIC_ENABLE
842 array_free (periodic, EMPTY0); 1367 array_free (periodic, EMPTY);
843#endif 1368#endif
1369#if EV_FORK_ENABLE
844 array_free (idle, EMPTY0); 1370 array_free (fork, EMPTY);
1371#endif
845 array_free (prepare, EMPTY0); 1372 array_free (prepare, EMPTY);
846 array_free (check, EMPTY0); 1373 array_free (check, EMPTY);
1374#if EV_ASYNC_ENABLE
1375 array_free (async, EMPTY);
1376#endif
847 1377
848 method = 0; 1378 backend = 0;
849} 1379}
850 1380
851static void 1381#if EV_USE_INOTIFY
1382void inline_size infy_fork (EV_P);
1383#endif
1384
1385void inline_size
852loop_fork (EV_P) 1386loop_fork (EV_P)
853{ 1387{
854#if EV_USE_PORT 1388#if EV_USE_PORT
855 if (method == EVMETHOD_PORT ) port_fork (EV_A); 1389 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856#endif 1390#endif
857#if EV_USE_KQUEUE 1391#if EV_USE_KQUEUE
858 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1392 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859#endif 1393#endif
860#if EV_USE_EPOLL 1394#if EV_USE_EPOLL
861 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1395 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
862#endif 1396#endif
1397#if EV_USE_INOTIFY
1398 infy_fork (EV_A);
1399#endif
863 1400
864 if (ev_is_active (&sigev)) 1401 if (ev_is_active (&pipeev))
865 { 1402 {
866 /* default loop */ 1403 /* this "locks" the handlers against writing to the pipe */
1404 /* while we modify the fd vars */
1405 gotsig = 1;
1406#if EV_ASYNC_ENABLE
1407 gotasync = 1;
1408#endif
867 1409
868 ev_ref (EV_A); 1410 ev_ref (EV_A);
869 ev_io_stop (EV_A_ &sigev); 1411 ev_io_stop (EV_A_ &pipeev);
1412
1413#if EV_USE_EVENTFD
1414 if (evfd >= 0)
1415 close (evfd);
1416#endif
1417
1418 if (evpipe [0] >= 0)
1419 {
870 close (sigpipe [0]); 1420 close (evpipe [0]);
871 close (sigpipe [1]); 1421 close (evpipe [1]);
1422 }
872 1423
873 while (pipe (sigpipe))
874 syserr ("(libev) error creating pipe");
875
876 siginit (EV_A); 1424 evpipe_init (EV_A);
1425 /* now iterate over everything, in case we missed something */
1426 pipecb (EV_A_ &pipeev, EV_READ);
877 } 1427 }
878 1428
879 postfork = 0; 1429 postfork = 0;
880} 1430}
881 1431
… …
887 1437
888 memset (loop, 0, sizeof (struct ev_loop)); 1438 memset (loop, 0, sizeof (struct ev_loop));
889 1439
890 loop_init (EV_A_ flags); 1440 loop_init (EV_A_ flags);
891 1441
892 if (ev_method (EV_A)) 1442 if (ev_backend (EV_A))
893 return loop; 1443 return loop;
894 1444
895 return 0; 1445 return 0;
896} 1446}
897 1447
… …
903} 1453}
904 1454
905void 1455void
906ev_loop_fork (EV_P) 1456ev_loop_fork (EV_P)
907{ 1457{
908 postfork = 1; 1458 postfork = 1; /* must be in line with ev_default_fork */
909} 1459}
910
911#endif 1460#endif
912 1461
913#if EV_MULTIPLICITY 1462#if EV_MULTIPLICITY
914struct ev_loop * 1463struct ev_loop *
915ev_default_loop_ (unsigned int flags) 1464ev_default_loop_init (unsigned int flags)
916#else 1465#else
917int 1466int
918ev_default_loop (unsigned int flags) 1467ev_default_loop (unsigned int flags)
919#endif 1468#endif
920{ 1469{
921 if (sigpipe [0] == sigpipe [1])
922 if (pipe (sigpipe))
923 return 0;
924
925 if (!ev_default_loop_ptr) 1470 if (!ev_default_loop_ptr)
926 { 1471 {
927#if EV_MULTIPLICITY 1472#if EV_MULTIPLICITY
928 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1473 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
929#else 1474#else
930 ev_default_loop_ptr = 1; 1475 ev_default_loop_ptr = 1;
931#endif 1476#endif
932 1477
933 loop_init (EV_A_ flags); 1478 loop_init (EV_A_ flags);
934 1479
935 if (ev_method (EV_A)) 1480 if (ev_backend (EV_A))
936 { 1481 {
937 siginit (EV_A);
938
939#ifndef _WIN32 1482#ifndef _WIN32
940 ev_signal_init (&childev, childcb, SIGCHLD); 1483 ev_signal_init (&childev, childcb, SIGCHLD);
941 ev_set_priority (&childev, EV_MAXPRI); 1484 ev_set_priority (&childev, EV_MAXPRI);
942 ev_signal_start (EV_A_ &childev); 1485 ev_signal_start (EV_A_ &childev);
943 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1486 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
960#ifndef _WIN32 1503#ifndef _WIN32
961 ev_ref (EV_A); /* child watcher */ 1504 ev_ref (EV_A); /* child watcher */
962 ev_signal_stop (EV_A_ &childev); 1505 ev_signal_stop (EV_A_ &childev);
963#endif 1506#endif
964 1507
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); 1508 loop_destroy (EV_A);
972} 1509}
973 1510
974void 1511void
975ev_default_fork (void) 1512ev_default_fork (void)
976{ 1513{
977#if EV_MULTIPLICITY 1514#if EV_MULTIPLICITY
978 struct ev_loop *loop = ev_default_loop_ptr; 1515 struct ev_loop *loop = ev_default_loop_ptr;
979#endif 1516#endif
980 1517
981 if (method) 1518 if (backend)
982 postfork = 1; 1519 postfork = 1; /* must be in line with ev_loop_fork */
983} 1520}
984 1521
985/*****************************************************************************/ 1522/*****************************************************************************/
986 1523
987static int 1524void
988any_pending (EV_P) 1525ev_invoke (EV_P_ void *w, int revents)
989{ 1526{
990 int pri; 1527 EV_CB_INVOKE ((W)w, revents);
991
992 for (pri = NUMPRI; pri--; )
993 if (pendingcnt [pri])
994 return 1;
995
996 return 0;
997} 1528}
998 1529
999inline void 1530void inline_speed
1000call_pending (EV_P) 1531call_pending (EV_P)
1001{ 1532{
1002 int pri; 1533 int pri;
1003 1534
1004 for (pri = NUMPRI; pri--; ) 1535 for (pri = NUMPRI; pri--; )
… …
1006 { 1537 {
1007 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1538 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1008 1539
1009 if (expect_true (p->w)) 1540 if (expect_true (p->w))
1010 { 1541 {
1542 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1543
1011 p->w->pending = 0; 1544 p->w->pending = 0;
1012 EV_CB_INVOKE (p->w, p->events); 1545 EV_CB_INVOKE (p->w, p->events);
1013 } 1546 }
1014 } 1547 }
1015} 1548}
1016 1549
1017static void 1550#if EV_IDLE_ENABLE
1551void inline_size
1552idle_reify (EV_P)
1553{
1554 if (expect_false (idleall))
1555 {
1556 int pri;
1557
1558 for (pri = NUMPRI; pri--; )
1559 {
1560 if (pendingcnt [pri])
1561 break;
1562
1563 if (idlecnt [pri])
1564 {
1565 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1566 break;
1567 }
1568 }
1569 }
1570}
1571#endif
1572
1573void inline_size
1018timers_reify (EV_P) 1574timers_reify (EV_P)
1019{ 1575{
1020 while (timercnt && ((WT)timers [0])->at <= mn_now) 1576 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
1021 { 1577 {
1022 struct ev_timer *w = timers [0]; 1578 ev_timer *w = (ev_timer *)timers [HEAP0];
1023 1579
1024 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1580 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1025 1581
1026 /* first reschedule or stop timer */ 1582 /* first reschedule or stop timer */
1027 if (w->repeat) 1583 if (w->repeat)
1028 { 1584 {
1029 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1585 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1030 1586
1031 ((WT)w)->at += w->repeat; 1587 ev_at (w) += w->repeat;
1032 if (((WT)w)->at < mn_now) 1588 if (ev_at (w) < mn_now)
1033 ((WT)w)->at = mn_now; 1589 ev_at (w) = mn_now;
1034 1590
1035 downheap ((WT *)timers, timercnt, 0); 1591 downheap (timers, timercnt, HEAP0);
1036 } 1592 }
1037 else 1593 else
1038 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1594 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1039 1595
1040 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1596 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1041 } 1597 }
1042} 1598}
1043 1599
1044#if EV_PERIODICS 1600#if EV_PERIODIC_ENABLE
1045static void 1601void inline_size
1046periodics_reify (EV_P) 1602periodics_reify (EV_P)
1047{ 1603{
1048 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1604 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1049 { 1605 {
1050 struct ev_periodic *w = periodics [0]; 1606 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1051 1607
1052 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1608 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1053 1609
1054 /* first reschedule or stop timer */ 1610 /* first reschedule or stop timer */
1055 if (w->reschedule_cb) 1611 if (w->reschedule_cb)
1056 { 1612 {
1057 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1613 ev_at (w) = 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)); 1614 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1059 downheap ((WT *)periodics, periodiccnt, 0); 1615 downheap (periodics, periodiccnt, 1);
1060 } 1616 }
1061 else if (w->interval) 1617 else if (w->interval)
1062 { 1618 {
1063 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1619 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1064 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1621 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1065 downheap ((WT *)periodics, periodiccnt, 0); 1622 downheap (periodics, periodiccnt, HEAP0);
1066 } 1623 }
1067 else 1624 else
1068 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1625 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1069 1626
1070 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1627 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1071 } 1628 }
1072} 1629}
1073 1630
1074static void 1631static void noinline
1075periodics_reschedule (EV_P) 1632periodics_reschedule (EV_P)
1076{ 1633{
1077 int i; 1634 int i;
1078 1635
1079 /* adjust periodics after time jump */ 1636 /* adjust periodics after time jump */
1080 for (i = 0; i < periodiccnt; ++i) 1637 for (i = 1; i <= periodiccnt; ++i)
1081 { 1638 {
1082 struct ev_periodic *w = periodics [i]; 1639 ev_periodic *w = (ev_periodic *)periodics [i];
1083 1640
1084 if (w->reschedule_cb) 1641 if (w->reschedule_cb)
1085 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1642 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1086 else if (w->interval) 1643 else if (w->interval)
1087 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1088 } 1645 }
1089 1646
1090 /* now rebuild the heap */ 1647 /* now rebuild the heap */
1091 for (i = periodiccnt >> 1; i--; ) 1648 for (i = periodiccnt >> 1; --i; )
1092 downheap ((WT *)periodics, periodiccnt, i); 1649 downheap (periodics, periodiccnt, i + HEAP0);
1093} 1650}
1094#endif 1651#endif
1095 1652
1096inline int 1653void inline_speed
1097time_update_monotonic (EV_P) 1654time_update (EV_P_ ev_tstamp max_block)
1098{ 1655{
1656 int i;
1657
1658#if EV_USE_MONOTONIC
1659 if (expect_true (have_monotonic))
1660 {
1661 ev_tstamp odiff = rtmn_diff;
1662
1099 mn_now = get_clock (); 1663 mn_now = get_clock ();
1100 1664
1665 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1666 /* interpolate in the meantime */
1101 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1667 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1102 { 1668 {
1103 ev_rt_now = rtmn_diff + mn_now; 1669 ev_rt_now = rtmn_diff + mn_now;
1104 return 0; 1670 return;
1105 } 1671 }
1106 else 1672
1107 {
1108 now_floor = mn_now; 1673 now_floor = mn_now;
1109 ev_rt_now = ev_time (); 1674 ev_rt_now = ev_time ();
1110 return 1;
1111 }
1112}
1113 1675
1114static void 1676 /* loop a few times, before making important decisions.
1115time_update (EV_P) 1677 * on the choice of "4": one iteration isn't enough,
1116{ 1678 * in case we get preempted during the calls to
1117 int i; 1679 * ev_time and get_clock. a second call is almost guaranteed
1118 1680 * to succeed in that case, though. and looping a few more times
1119#if EV_USE_MONOTONIC 1681 * doesn't hurt either as we only do this on time-jumps or
1120 if (expect_true (have_monotonic)) 1682 * in the unlikely event of having been preempted here.
1121 { 1683 */
1122 if (time_update_monotonic (EV_A)) 1684 for (i = 4; --i; )
1123 { 1685 {
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; 1686 rtmn_diff = ev_rt_now - mn_now;
1129 1687
1130 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1688 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1131 return; /* all is well */ 1689 return; /* all is well */
1132 1690
1133 ev_rt_now = ev_time (); 1691 ev_rt_now = ev_time ();
1134 mn_now = get_clock (); 1692 mn_now = get_clock ();
1135 now_floor = mn_now; 1693 now_floor = mn_now;
1136 } 1694 }
1137 1695
1138# if EV_PERIODICS 1696# if EV_PERIODIC_ENABLE
1697 periodics_reschedule (EV_A);
1698# endif
1699 /* no timer adjustment, as the monotonic clock doesn't jump */
1700 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1701 }
1702 else
1703#endif
1704 {
1705 ev_rt_now = ev_time ();
1706
1707 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1708 {
1709#if EV_PERIODIC_ENABLE
1139 periodics_reschedule (EV_A); 1710 periodics_reschedule (EV_A);
1140# endif 1711#endif
1141 /* no timer adjustment, as the monotonic clock doesn't jump */ 1712 /* adjust timers. this is easy, as the offset is the same for all of them */
1142 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1713 for (i = 1; i <= timercnt; ++i)
1714 ev_at (timers [i]) += ev_rt_now - mn_now;
1143 } 1715 }
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 */
1157 for (i = 0; i < timercnt; ++i)
1158 ((WT)timers [i])->at += ev_rt_now - mn_now;
1159 }
1160 1716
1161 mn_now = ev_rt_now; 1717 mn_now = ev_rt_now;
1162 } 1718 }
1163} 1719}
1164 1720
… …
1177static int loop_done; 1733static int loop_done;
1178 1734
1179void 1735void
1180ev_loop (EV_P_ int flags) 1736ev_loop (EV_P_ int flags)
1181{ 1737{
1182 double block; 1738 loop_done = EVUNLOOP_CANCEL;
1183 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1184 1739
1185 while (activecnt) 1740 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1741
1742 do
1186 { 1743 {
1744#ifndef _WIN32
1745 if (expect_false (curpid)) /* penalise the forking check even more */
1746 if (expect_false (getpid () != curpid))
1747 {
1748 curpid = getpid ();
1749 postfork = 1;
1750 }
1751#endif
1752
1753#if EV_FORK_ENABLE
1754 /* we might have forked, so queue fork handlers */
1755 if (expect_false (postfork))
1756 if (forkcnt)
1757 {
1758 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1759 call_pending (EV_A);
1760 }
1761#endif
1762
1187 /* queue check watchers (and execute them) */ 1763 /* queue prepare watchers (and execute them) */
1188 if (expect_false (preparecnt)) 1764 if (expect_false (preparecnt))
1189 { 1765 {
1190 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1766 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1191 call_pending (EV_A); 1767 call_pending (EV_A);
1192 } 1768 }
1193 1769
1770 if (expect_false (!activecnt))
1771 break;
1772
1194 /* we might have forked, so reify kernel state if necessary */ 1773 /* we might have forked, so reify kernel state if necessary */
1195 if (expect_false (postfork)) 1774 if (expect_false (postfork))
1196 loop_fork (EV_A); 1775 loop_fork (EV_A);
1197 1776
1198 /* update fd-related kernel structures */ 1777 /* update fd-related kernel structures */
1199 fd_reify (EV_A); 1778 fd_reify (EV_A);
1200 1779
1201 /* calculate blocking time */ 1780 /* calculate blocking time */
1781 {
1782 ev_tstamp waittime = 0.;
1783 ev_tstamp sleeptime = 0.;
1202 1784
1203 /* we only need this for !monotonic clock or timers, but as we basically 1785 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 { 1786 {
1211 ev_rt_now = ev_time (); 1787 /* update time to cancel out callback processing overhead */
1212 mn_now = ev_rt_now; 1788 time_update (EV_A_ 1e100);
1213 }
1214 1789
1215 if (flags & EVLOOP_NONBLOCK || idlecnt)
1216 block = 0.;
1217 else
1218 {
1219 block = MAX_BLOCKTIME; 1790 waittime = MAX_BLOCKTIME;
1220 1791
1221 if (timercnt) 1792 if (timercnt)
1222 { 1793 {
1223 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1794 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1224 if (block > to) block = to; 1795 if (waittime > to) waittime = to;
1225 } 1796 }
1226 1797
1227#if EV_PERIODICS 1798#if EV_PERIODIC_ENABLE
1228 if (periodiccnt) 1799 if (periodiccnt)
1229 { 1800 {
1230 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1801 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1231 if (block > to) block = to; 1802 if (waittime > to) waittime = to;
1232 } 1803 }
1233#endif 1804#endif
1234 1805
1235 if (block < 0.) block = 0.; 1806 if (expect_false (waittime < timeout_blocktime))
1807 waittime = timeout_blocktime;
1808
1809 sleeptime = waittime - backend_fudge;
1810
1811 if (expect_true (sleeptime > io_blocktime))
1812 sleeptime = io_blocktime;
1813
1814 if (sleeptime)
1815 {
1816 ev_sleep (sleeptime);
1817 waittime -= sleeptime;
1818 }
1236 } 1819 }
1237 1820
1238 method_poll (EV_A_ block); 1821 ++loop_count;
1822 backend_poll (EV_A_ waittime);
1239 1823
1240 /* update ev_rt_now, do magic */ 1824 /* update ev_rt_now, do magic */
1241 time_update (EV_A); 1825 time_update (EV_A_ waittime + sleeptime);
1826 }
1242 1827
1243 /* queue pending timers and reschedule them */ 1828 /* queue pending timers and reschedule them */
1244 timers_reify (EV_A); /* relative timers called last */ 1829 timers_reify (EV_A); /* relative timers called last */
1245#if EV_PERIODICS 1830#if EV_PERIODIC_ENABLE
1246 periodics_reify (EV_A); /* absolute timers called first */ 1831 periodics_reify (EV_A); /* absolute timers called first */
1247#endif 1832#endif
1248 1833
1834#if EV_IDLE_ENABLE
1249 /* queue idle watchers unless io or timers are pending */ 1835 /* queue idle watchers unless other events are pending */
1250 if (idlecnt && !any_pending (EV_A)) 1836 idle_reify (EV_A);
1251 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1837#endif
1252 1838
1253 /* queue check watchers, to be executed first */ 1839 /* queue check watchers, to be executed first */
1254 if (checkcnt) 1840 if (expect_false (checkcnt))
1255 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1841 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1256 1842
1257 call_pending (EV_A); 1843 call_pending (EV_A);
1258
1259 if (loop_done)
1260 break;
1261 } 1844 }
1845 while (expect_true (
1846 activecnt
1847 && !loop_done
1848 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1849 ));
1262 1850
1263 if (loop_done != 2) 1851 if (loop_done == EVUNLOOP_ONE)
1264 loop_done = 0; 1852 loop_done = EVUNLOOP_CANCEL;
1265} 1853}
1266 1854
1267void 1855void
1268ev_unloop (EV_P_ int how) 1856ev_unloop (EV_P_ int how)
1269{ 1857{
1270 loop_done = how; 1858 loop_done = how;
1271} 1859}
1272 1860
1273/*****************************************************************************/ 1861/*****************************************************************************/
1274 1862
1275inline void 1863void inline_size
1276wlist_add (WL *head, WL elem) 1864wlist_add (WL *head, WL elem)
1277{ 1865{
1278 elem->next = *head; 1866 elem->next = *head;
1279 *head = elem; 1867 *head = elem;
1280} 1868}
1281 1869
1282inline void 1870void inline_size
1283wlist_del (WL *head, WL elem) 1871wlist_del (WL *head, WL elem)
1284{ 1872{
1285 while (*head) 1873 while (*head)
1286 { 1874 {
1287 if (*head == elem) 1875 if (*head == elem)
… …
1292 1880
1293 head = &(*head)->next; 1881 head = &(*head)->next;
1294 } 1882 }
1295} 1883}
1296 1884
1297inline void 1885void inline_speed
1298ev_clear_pending (EV_P_ W w) 1886clear_pending (EV_P_ W w)
1299{ 1887{
1300 if (w->pending) 1888 if (w->pending)
1301 { 1889 {
1302 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1890 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1303 w->pending = 0; 1891 w->pending = 0;
1304 } 1892 }
1305} 1893}
1306 1894
1307inline void 1895int
1896ev_clear_pending (EV_P_ void *w)
1897{
1898 W w_ = (W)w;
1899 int pending = w_->pending;
1900
1901 if (expect_true (pending))
1902 {
1903 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1904 w_->pending = 0;
1905 p->w = 0;
1906 return p->events;
1907 }
1908 else
1909 return 0;
1910}
1911
1912void inline_size
1913pri_adjust (EV_P_ W w)
1914{
1915 int pri = w->priority;
1916 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1917 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1918 w->priority = pri;
1919}
1920
1921void inline_speed
1308ev_start (EV_P_ W w, int active) 1922ev_start (EV_P_ W w, int active)
1309{ 1923{
1310 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1924 pri_adjust (EV_A_ w);
1311 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1312
1313 w->active = active; 1925 w->active = active;
1314 ev_ref (EV_A); 1926 ev_ref (EV_A);
1315} 1927}
1316 1928
1317inline void 1929void inline_size
1318ev_stop (EV_P_ W w) 1930ev_stop (EV_P_ W w)
1319{ 1931{
1320 ev_unref (EV_A); 1932 ev_unref (EV_A);
1321 w->active = 0; 1933 w->active = 0;
1322} 1934}
1323 1935
1324/*****************************************************************************/ 1936/*****************************************************************************/
1325 1937
1326void 1938void noinline
1327ev_io_start (EV_P_ struct ev_io *w) 1939ev_io_start (EV_P_ ev_io *w)
1328{ 1940{
1329 int fd = w->fd; 1941 int fd = w->fd;
1330 1942
1331 if (ev_is_active (w)) 1943 if (expect_false (ev_is_active (w)))
1332 return; 1944 return;
1333 1945
1334 assert (("ev_io_start called with negative fd", fd >= 0)); 1946 assert (("ev_io_start called with negative fd", fd >= 0));
1335 1947
1336 ev_start (EV_A_ (W)w, 1); 1948 ev_start (EV_A_ (W)w, 1);
1337 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1949 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1338 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1950 wlist_add (&anfds[fd].head, (WL)w);
1339 1951
1340 fd_change (EV_A_ fd); 1952 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1953 w->events &= ~EV_IOFDSET;
1341} 1954}
1342 1955
1343void 1956void noinline
1344ev_io_stop (EV_P_ struct ev_io *w) 1957ev_io_stop (EV_P_ ev_io *w)
1345{ 1958{
1346 ev_clear_pending (EV_A_ (W)w); 1959 clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w)) 1960 if (expect_false (!ev_is_active (w)))
1348 return; 1961 return;
1349 1962
1350 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1963 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1351 1964
1352 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1965 wlist_del (&anfds[w->fd].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1966 ev_stop (EV_A_ (W)w);
1354 1967
1355 fd_change (EV_A_ w->fd); 1968 fd_change (EV_A_ w->fd, 1);
1356} 1969}
1357 1970
1358void 1971void noinline
1359ev_timer_start (EV_P_ struct ev_timer *w) 1972ev_timer_start (EV_P_ ev_timer *w)
1360{ 1973{
1361 if (ev_is_active (w)) 1974 if (expect_false (ev_is_active (w)))
1362 return; 1975 return;
1363 1976
1364 ((WT)w)->at += mn_now; 1977 ev_at (w) += mn_now;
1365 1978
1366 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1979 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1367 1980
1368 ev_start (EV_A_ (W)w, ++timercnt); 1981 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1369 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1982 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1370 timers [timercnt - 1] = w; 1983 timers [ev_active (w)] = (WT)w;
1371 upheap ((WT *)timers, timercnt - 1); 1984 upheap (timers, ev_active (w));
1372 1985
1373 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1986 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1374} 1987}
1375 1988
1376void 1989void noinline
1377ev_timer_stop (EV_P_ struct ev_timer *w) 1990ev_timer_stop (EV_P_ ev_timer *w)
1378{ 1991{
1379 ev_clear_pending (EV_A_ (W)w); 1992 clear_pending (EV_A_ (W)w);
1380 if (!ev_is_active (w)) 1993 if (expect_false (!ev_is_active (w)))
1381 return; 1994 return;
1382 1995
1996 {
1997 int active = ev_active (w);
1998
1383 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1999 assert (("internal timer heap corruption", timers [active] == (WT)w));
1384 2000
1385 if (((W)w)->active < timercnt--) 2001 if (expect_true (active < timercnt + HEAP0 - 1))
1386 { 2002 {
1387 timers [((W)w)->active - 1] = timers [timercnt]; 2003 timers [active] = timers [timercnt + HEAP0 - 1];
1388 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2004 adjustheap (timers, timercnt, active);
1389 } 2005 }
1390 2006
1391 ((WT)w)->at -= mn_now; 2007 --timercnt;
2008 }
2009
2010 ev_at (w) -= mn_now;
1392 2011
1393 ev_stop (EV_A_ (W)w); 2012 ev_stop (EV_A_ (W)w);
1394} 2013}
1395 2014
1396void 2015void noinline
1397ev_timer_again (EV_P_ struct ev_timer *w) 2016ev_timer_again (EV_P_ ev_timer *w)
1398{ 2017{
1399 if (ev_is_active (w)) 2018 if (ev_is_active (w))
1400 { 2019 {
1401 if (w->repeat) 2020 if (w->repeat)
1402 { 2021 {
1403 ((WT)w)->at = mn_now + w->repeat; 2022 ev_at (w) = mn_now + w->repeat;
1404 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2023 adjustheap (timers, timercnt, ev_active (w));
1405 } 2024 }
1406 else 2025 else
1407 ev_timer_stop (EV_A_ w); 2026 ev_timer_stop (EV_A_ w);
1408 } 2027 }
1409 else if (w->repeat) 2028 else if (w->repeat)
1410 { 2029 {
1411 w->at = w->repeat; 2030 ev_at (w) = w->repeat;
1412 ev_timer_start (EV_A_ w); 2031 ev_timer_start (EV_A_ w);
1413 } 2032 }
1414} 2033}
1415 2034
1416#if EV_PERIODICS 2035#if EV_PERIODIC_ENABLE
1417void 2036void noinline
1418ev_periodic_start (EV_P_ struct ev_periodic *w) 2037ev_periodic_start (EV_P_ ev_periodic *w)
1419{ 2038{
1420 if (ev_is_active (w)) 2039 if (expect_false (ev_is_active (w)))
1421 return; 2040 return;
1422 2041
1423 if (w->reschedule_cb) 2042 if (w->reschedule_cb)
1424 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2043 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1425 else if (w->interval) 2044 else if (w->interval)
1426 { 2045 {
1427 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2046 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 */ 2047 /* 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; 2048 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1430 } 2049 }
2050 else
2051 ev_at (w) = w->offset;
1431 2052
1432 ev_start (EV_A_ (W)w, ++periodiccnt); 2053 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1433 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2054 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1434 periodics [periodiccnt - 1] = w; 2055 periodics [ev_active (w)] = (WT)w;
1435 upheap ((WT *)periodics, periodiccnt - 1); 2056 upheap (periodics, ev_active (w));
1436 2057
1437 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2058 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1438} 2059}
1439 2060
1440void 2061void noinline
1441ev_periodic_stop (EV_P_ struct ev_periodic *w) 2062ev_periodic_stop (EV_P_ ev_periodic *w)
1442{ 2063{
1443 ev_clear_pending (EV_A_ (W)w); 2064 clear_pending (EV_A_ (W)w);
1444 if (!ev_is_active (w)) 2065 if (expect_false (!ev_is_active (w)))
1445 return; 2066 return;
1446 2067
2068 {
2069 int active = ev_active (w);
2070
1447 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2071 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1448 2072
1449 if (((W)w)->active < periodiccnt--) 2073 if (expect_true (active < periodiccnt + HEAP0 - 1))
1450 { 2074 {
1451 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2075 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1452 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2076 adjustheap (periodics, periodiccnt, active);
1453 } 2077 }
2078
2079 --periodiccnt;
2080 }
1454 2081
1455 ev_stop (EV_A_ (W)w); 2082 ev_stop (EV_A_ (W)w);
1456} 2083}
1457 2084
1458void 2085void noinline
1459ev_periodic_again (EV_P_ struct ev_periodic *w) 2086ev_periodic_again (EV_P_ ev_periodic *w)
1460{ 2087{
1461 /* TODO: use adjustheap and recalculation */ 2088 /* TODO: use adjustheap and recalculation */
1462 ev_periodic_stop (EV_A_ w); 2089 ev_periodic_stop (EV_A_ w);
1463 ev_periodic_start (EV_A_ w); 2090 ev_periodic_start (EV_A_ w);
1464} 2091}
1465#endif 2092#endif
1466 2093
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 2094#ifndef SA_RESTART
1534# define SA_RESTART 0 2095# define SA_RESTART 0
1535#endif 2096#endif
1536 2097
1537void 2098void noinline
1538ev_signal_start (EV_P_ struct ev_signal *w) 2099ev_signal_start (EV_P_ ev_signal *w)
1539{ 2100{
1540#if EV_MULTIPLICITY 2101#if EV_MULTIPLICITY
1541 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2102 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542#endif 2103#endif
1543 if (ev_is_active (w)) 2104 if (expect_false (ev_is_active (w)))
1544 return; 2105 return;
1545 2106
1546 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2107 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1547 2108
2109 evpipe_init (EV_A);
2110
2111 {
2112#ifndef _WIN32
2113 sigset_t full, prev;
2114 sigfillset (&full);
2115 sigprocmask (SIG_SETMASK, &full, &prev);
2116#endif
2117
2118 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2119
2120#ifndef _WIN32
2121 sigprocmask (SIG_SETMASK, &prev, 0);
2122#endif
2123 }
2124
1548 ev_start (EV_A_ (W)w, 1); 2125 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); 2126 wlist_add (&signals [w->signum - 1].head, (WL)w);
1551 2127
1552 if (!((WL)w)->next) 2128 if (!((WL)w)->next)
1553 { 2129 {
1554#if _WIN32 2130#if _WIN32
1555 signal (w->signum, sighandler); 2131 signal (w->signum, ev_sighandler);
1556#else 2132#else
1557 struct sigaction sa; 2133 struct sigaction sa;
1558 sa.sa_handler = sighandler; 2134 sa.sa_handler = ev_sighandler;
1559 sigfillset (&sa.sa_mask); 2135 sigfillset (&sa.sa_mask);
1560 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2136 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1561 sigaction (w->signum, &sa, 0); 2137 sigaction (w->signum, &sa, 0);
1562#endif 2138#endif
1563 } 2139 }
1564} 2140}
1565 2141
1566void 2142void noinline
1567ev_signal_stop (EV_P_ struct ev_signal *w) 2143ev_signal_stop (EV_P_ ev_signal *w)
1568{ 2144{
1569 ev_clear_pending (EV_A_ (W)w); 2145 clear_pending (EV_A_ (W)w);
1570 if (!ev_is_active (w)) 2146 if (expect_false (!ev_is_active (w)))
1571 return; 2147 return;
1572 2148
1573 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2149 wlist_del (&signals [w->signum - 1].head, (WL)w);
1574 ev_stop (EV_A_ (W)w); 2150 ev_stop (EV_A_ (W)w);
1575 2151
1576 if (!signals [w->signum - 1].head) 2152 if (!signals [w->signum - 1].head)
1577 signal (w->signum, SIG_DFL); 2153 signal (w->signum, SIG_DFL);
1578} 2154}
1579 2155
1580void 2156void
1581ev_child_start (EV_P_ struct ev_child *w) 2157ev_child_start (EV_P_ ev_child *w)
1582{ 2158{
1583#if EV_MULTIPLICITY 2159#if EV_MULTIPLICITY
1584 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2160 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1585#endif 2161#endif
1586 if (ev_is_active (w)) 2162 if (expect_false (ev_is_active (w)))
1587 return; 2163 return;
1588 2164
1589 ev_start (EV_A_ (W)w, 1); 2165 ev_start (EV_A_ (W)w, 1);
1590 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2166 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1591} 2167}
1592 2168
1593void 2169void
1594ev_child_stop (EV_P_ struct ev_child *w) 2170ev_child_stop (EV_P_ ev_child *w)
1595{ 2171{
1596 ev_clear_pending (EV_A_ (W)w); 2172 clear_pending (EV_A_ (W)w);
1597 if (!ev_is_active (w)) 2173 if (expect_false (!ev_is_active (w)))
1598 return; 2174 return;
1599 2175
1600 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2176 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1601 ev_stop (EV_A_ (W)w); 2177 ev_stop (EV_A_ (W)w);
1602} 2178}
1603 2179
2180#if EV_STAT_ENABLE
2181
2182# ifdef _WIN32
2183# undef lstat
2184# define lstat(a,b) _stati64 (a,b)
2185# endif
2186
2187#define DEF_STAT_INTERVAL 5.0074891
2188#define MIN_STAT_INTERVAL 0.1074891
2189
2190static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2191
2192#if EV_USE_INOTIFY
2193# define EV_INOTIFY_BUFSIZE 8192
2194
2195static void noinline
2196infy_add (EV_P_ ev_stat *w)
2197{
2198 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);
2199
2200 if (w->wd < 0)
2201 {
2202 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2203
2204 /* monitor some parent directory for speedup hints */
2205 /* note that exceeding the hardcoded limit is not a correctness issue, */
2206 /* but an efficiency issue only */
2207 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2208 {
2209 char path [4096];
2210 strcpy (path, w->path);
2211
2212 do
2213 {
2214 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2215 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2216
2217 char *pend = strrchr (path, '/');
2218
2219 if (!pend)
2220 break; /* whoops, no '/', complain to your admin */
2221
2222 *pend = 0;
2223 w->wd = inotify_add_watch (fs_fd, path, mask);
2224 }
2225 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2226 }
2227 }
2228 else
2229 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2230
2231 if (w->wd >= 0)
2232 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2233}
2234
2235static void noinline
2236infy_del (EV_P_ ev_stat *w)
2237{
2238 int slot;
2239 int wd = w->wd;
2240
2241 if (wd < 0)
2242 return;
2243
2244 w->wd = -2;
2245 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2246 wlist_del (&fs_hash [slot].head, (WL)w);
2247
2248 /* remove this watcher, if others are watching it, they will rearm */
2249 inotify_rm_watch (fs_fd, wd);
2250}
2251
2252static void noinline
2253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2254{
2255 if (slot < 0)
2256 /* overflow, need to check for all hahs slots */
2257 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2258 infy_wd (EV_A_ slot, wd, ev);
2259 else
2260 {
2261 WL w_;
2262
2263 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2264 {
2265 ev_stat *w = (ev_stat *)w_;
2266 w_ = w_->next; /* lets us remove this watcher and all before it */
2267
2268 if (w->wd == wd || wd == -1)
2269 {
2270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2271 {
2272 w->wd = -1;
2273 infy_add (EV_A_ w); /* re-add, no matter what */
2274 }
2275
2276 stat_timer_cb (EV_A_ &w->timer, 0);
2277 }
2278 }
2279 }
2280}
2281
2282static void
2283infy_cb (EV_P_ ev_io *w, int revents)
2284{
2285 char buf [EV_INOTIFY_BUFSIZE];
2286 struct inotify_event *ev = (struct inotify_event *)buf;
2287 int ofs;
2288 int len = read (fs_fd, buf, sizeof (buf));
2289
2290 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2291 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2292}
2293
2294void inline_size
2295infy_init (EV_P)
2296{
2297 if (fs_fd != -2)
2298 return;
2299
2300 fs_fd = inotify_init ();
2301
2302 if (fs_fd >= 0)
2303 {
2304 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2305 ev_set_priority (&fs_w, EV_MAXPRI);
2306 ev_io_start (EV_A_ &fs_w);
2307 }
2308}
2309
2310void inline_size
2311infy_fork (EV_P)
2312{
2313 int slot;
2314
2315 if (fs_fd < 0)
2316 return;
2317
2318 close (fs_fd);
2319 fs_fd = inotify_init ();
2320
2321 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2322 {
2323 WL w_ = fs_hash [slot].head;
2324 fs_hash [slot].head = 0;
2325
2326 while (w_)
2327 {
2328 ev_stat *w = (ev_stat *)w_;
2329 w_ = w_->next; /* lets us add this watcher */
2330
2331 w->wd = -1;
2332
2333 if (fs_fd >= 0)
2334 infy_add (EV_A_ w); /* re-add, no matter what */
2335 else
2336 ev_timer_start (EV_A_ &w->timer);
2337 }
2338
2339 }
2340}
2341
2342#endif
2343
2344void
2345ev_stat_stat (EV_P_ ev_stat *w)
2346{
2347 if (lstat (w->path, &w->attr) < 0)
2348 w->attr.st_nlink = 0;
2349 else if (!w->attr.st_nlink)
2350 w->attr.st_nlink = 1;
2351}
2352
2353static void noinline
2354stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2355{
2356 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2357
2358 /* we copy this here each the time so that */
2359 /* prev has the old value when the callback gets invoked */
2360 w->prev = w->attr;
2361 ev_stat_stat (EV_A_ w);
2362
2363 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2364 if (
2365 w->prev.st_dev != w->attr.st_dev
2366 || w->prev.st_ino != w->attr.st_ino
2367 || w->prev.st_mode != w->attr.st_mode
2368 || w->prev.st_nlink != w->attr.st_nlink
2369 || w->prev.st_uid != w->attr.st_uid
2370 || w->prev.st_gid != w->attr.st_gid
2371 || w->prev.st_rdev != w->attr.st_rdev
2372 || w->prev.st_size != w->attr.st_size
2373 || w->prev.st_atime != w->attr.st_atime
2374 || w->prev.st_mtime != w->attr.st_mtime
2375 || w->prev.st_ctime != w->attr.st_ctime
2376 ) {
2377 #if EV_USE_INOTIFY
2378 infy_del (EV_A_ w);
2379 infy_add (EV_A_ w);
2380 ev_stat_stat (EV_A_ w); /* avoid race... */
2381 #endif
2382
2383 ev_feed_event (EV_A_ w, EV_STAT);
2384 }
2385}
2386
2387void
2388ev_stat_start (EV_P_ ev_stat *w)
2389{
2390 if (expect_false (ev_is_active (w)))
2391 return;
2392
2393 /* since we use memcmp, we need to clear any padding data etc. */
2394 memset (&w->prev, 0, sizeof (ev_statdata));
2395 memset (&w->attr, 0, sizeof (ev_statdata));
2396
2397 ev_stat_stat (EV_A_ w);
2398
2399 if (w->interval < MIN_STAT_INTERVAL)
2400 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2401
2402 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2403 ev_set_priority (&w->timer, ev_priority (w));
2404
2405#if EV_USE_INOTIFY
2406 infy_init (EV_A);
2407
2408 if (fs_fd >= 0)
2409 infy_add (EV_A_ w);
2410 else
2411#endif
2412 ev_timer_start (EV_A_ &w->timer);
2413
2414 ev_start (EV_A_ (W)w, 1);
2415}
2416
2417void
2418ev_stat_stop (EV_P_ ev_stat *w)
2419{
2420 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w)))
2422 return;
2423
2424#if EV_USE_INOTIFY
2425 infy_del (EV_A_ w);
2426#endif
2427 ev_timer_stop (EV_A_ &w->timer);
2428
2429 ev_stop (EV_A_ (W)w);
2430}
2431#endif
2432
2433#if EV_IDLE_ENABLE
2434void
2435ev_idle_start (EV_P_ ev_idle *w)
2436{
2437 if (expect_false (ev_is_active (w)))
2438 return;
2439
2440 pri_adjust (EV_A_ (W)w);
2441
2442 {
2443 int active = ++idlecnt [ABSPRI (w)];
2444
2445 ++idleall;
2446 ev_start (EV_A_ (W)w, active);
2447
2448 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2449 idles [ABSPRI (w)][active - 1] = w;
2450 }
2451}
2452
2453void
2454ev_idle_stop (EV_P_ ev_idle *w)
2455{
2456 clear_pending (EV_A_ (W)w);
2457 if (expect_false (!ev_is_active (w)))
2458 return;
2459
2460 {
2461 int active = ev_active (w);
2462
2463 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2464 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2465
2466 ev_stop (EV_A_ (W)w);
2467 --idleall;
2468 }
2469}
2470#endif
2471
2472void
2473ev_prepare_start (EV_P_ ev_prepare *w)
2474{
2475 if (expect_false (ev_is_active (w)))
2476 return;
2477
2478 ev_start (EV_A_ (W)w, ++preparecnt);
2479 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2480 prepares [preparecnt - 1] = w;
2481}
2482
2483void
2484ev_prepare_stop (EV_P_ ev_prepare *w)
2485{
2486 clear_pending (EV_A_ (W)w);
2487 if (expect_false (!ev_is_active (w)))
2488 return;
2489
2490 {
2491 int active = ev_active (w);
2492
2493 prepares [active - 1] = prepares [--preparecnt];
2494 ev_active (prepares [active - 1]) = active;
2495 }
2496
2497 ev_stop (EV_A_ (W)w);
2498}
2499
2500void
2501ev_check_start (EV_P_ ev_check *w)
2502{
2503 if (expect_false (ev_is_active (w)))
2504 return;
2505
2506 ev_start (EV_A_ (W)w, ++checkcnt);
2507 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2508 checks [checkcnt - 1] = w;
2509}
2510
2511void
2512ev_check_stop (EV_P_ ev_check *w)
2513{
2514 clear_pending (EV_A_ (W)w);
2515 if (expect_false (!ev_is_active (w)))
2516 return;
2517
2518 {
2519 int active = ev_active (w);
2520
2521 checks [active - 1] = checks [--checkcnt];
2522 ev_active (checks [active - 1]) = active;
2523 }
2524
2525 ev_stop (EV_A_ (W)w);
2526}
2527
2528#if EV_EMBED_ENABLE
2529void noinline
2530ev_embed_sweep (EV_P_ ev_embed *w)
2531{
2532 ev_loop (w->other, EVLOOP_NONBLOCK);
2533}
2534
2535static void
2536embed_io_cb (EV_P_ ev_io *io, int revents)
2537{
2538 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2539
2540 if (ev_cb (w))
2541 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2542 else
2543 ev_loop (w->other, EVLOOP_NONBLOCK);
2544}
2545
2546static void
2547embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2548{
2549 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2550
2551 {
2552 struct ev_loop *loop = w->other;
2553
2554 while (fdchangecnt)
2555 {
2556 fd_reify (EV_A);
2557 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2558 }
2559 }
2560}
2561
2562#if 0
2563static void
2564embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2565{
2566 ev_idle_stop (EV_A_ idle);
2567}
2568#endif
2569
2570void
2571ev_embed_start (EV_P_ ev_embed *w)
2572{
2573 if (expect_false (ev_is_active (w)))
2574 return;
2575
2576 {
2577 struct ev_loop *loop = w->other;
2578 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2579 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2580 }
2581
2582 ev_set_priority (&w->io, ev_priority (w));
2583 ev_io_start (EV_A_ &w->io);
2584
2585 ev_prepare_init (&w->prepare, embed_prepare_cb);
2586 ev_set_priority (&w->prepare, EV_MINPRI);
2587 ev_prepare_start (EV_A_ &w->prepare);
2588
2589 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2590
2591 ev_start (EV_A_ (W)w, 1);
2592}
2593
2594void
2595ev_embed_stop (EV_P_ ev_embed *w)
2596{
2597 clear_pending (EV_A_ (W)w);
2598 if (expect_false (!ev_is_active (w)))
2599 return;
2600
2601 ev_io_stop (EV_A_ &w->io);
2602 ev_prepare_stop (EV_A_ &w->prepare);
2603
2604 ev_stop (EV_A_ (W)w);
2605}
2606#endif
2607
2608#if EV_FORK_ENABLE
2609void
2610ev_fork_start (EV_P_ ev_fork *w)
2611{
2612 if (expect_false (ev_is_active (w)))
2613 return;
2614
2615 ev_start (EV_A_ (W)w, ++forkcnt);
2616 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2617 forks [forkcnt - 1] = w;
2618}
2619
2620void
2621ev_fork_stop (EV_P_ ev_fork *w)
2622{
2623 clear_pending (EV_A_ (W)w);
2624 if (expect_false (!ev_is_active (w)))
2625 return;
2626
2627 {
2628 int active = ev_active (w);
2629
2630 forks [active - 1] = forks [--forkcnt];
2631 ev_active (forks [active - 1]) = active;
2632 }
2633
2634 ev_stop (EV_A_ (W)w);
2635}
2636#endif
2637
2638#if EV_ASYNC_ENABLE
2639void
2640ev_async_start (EV_P_ ev_async *w)
2641{
2642 if (expect_false (ev_is_active (w)))
2643 return;
2644
2645 evpipe_init (EV_A);
2646
2647 ev_start (EV_A_ (W)w, ++asynccnt);
2648 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2649 asyncs [asynccnt - 1] = w;
2650}
2651
2652void
2653ev_async_stop (EV_P_ ev_async *w)
2654{
2655 clear_pending (EV_A_ (W)w);
2656 if (expect_false (!ev_is_active (w)))
2657 return;
2658
2659 {
2660 int active = ev_active (w);
2661
2662 asyncs [active - 1] = asyncs [--asynccnt];
2663 ev_active (asyncs [active - 1]) = active;
2664 }
2665
2666 ev_stop (EV_A_ (W)w);
2667}
2668
2669void
2670ev_async_send (EV_P_ ev_async *w)
2671{
2672 w->sent = 1;
2673 evpipe_write (EV_A_ &gotasync);
2674}
2675#endif
2676
1604/*****************************************************************************/ 2677/*****************************************************************************/
1605 2678
1606struct ev_once 2679struct ev_once
1607{ 2680{
1608 struct ev_io io; 2681 ev_io io;
1609 struct ev_timer to; 2682 ev_timer to;
1610 void (*cb)(int revents, void *arg); 2683 void (*cb)(int revents, void *arg);
1611 void *arg; 2684 void *arg;
1612}; 2685};
1613 2686
1614static void 2687static void
… …
1623 2696
1624 cb (revents, arg); 2697 cb (revents, arg);
1625} 2698}
1626 2699
1627static void 2700static void
1628once_cb_io (EV_P_ struct ev_io *w, int revents) 2701once_cb_io (EV_P_ ev_io *w, int revents)
1629{ 2702{
1630 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2703 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1631} 2704}
1632 2705
1633static void 2706static void
1634once_cb_to (EV_P_ struct ev_timer *w, int revents) 2707once_cb_to (EV_P_ ev_timer *w, int revents)
1635{ 2708{
1636 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2709 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1637} 2710}
1638 2711
1639void 2712void
1640ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2713ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1641{ 2714{
1642 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2715 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1643 2716
1644 if (!once) 2717 if (expect_false (!once))
2718 {
1645 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2719 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1646 else 2720 return;
1647 { 2721 }
2722
1648 once->cb = cb; 2723 once->cb = cb;
1649 once->arg = arg; 2724 once->arg = arg;
1650 2725
1651 ev_init (&once->io, once_cb_io); 2726 ev_init (&once->io, once_cb_io);
1652 if (fd >= 0) 2727 if (fd >= 0)
1653 { 2728 {
1654 ev_io_set (&once->io, fd, events); 2729 ev_io_set (&once->io, fd, events);
1655 ev_io_start (EV_A_ &once->io); 2730 ev_io_start (EV_A_ &once->io);
1656 } 2731 }
1657 2732
1658 ev_init (&once->to, once_cb_to); 2733 ev_init (&once->to, once_cb_to);
1659 if (timeout >= 0.) 2734 if (timeout >= 0.)
1660 { 2735 {
1661 ev_timer_set (&once->to, timeout, 0.); 2736 ev_timer_set (&once->to, timeout, 0.);
1662 ev_timer_start (EV_A_ &once->to); 2737 ev_timer_start (EV_A_ &once->to);
1663 }
1664 } 2738 }
1665} 2739}
2740
2741#if EV_MULTIPLICITY
2742 #include "ev_wrap.h"
2743#endif
1666 2744
1667#ifdef __cplusplus 2745#ifdef __cplusplus
1668} 2746}
1669#endif 2747#endif
1670 2748

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