ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.106 by root, Mon Nov 12 01:07:50 2007 UTC vs.
Revision 1.238 by root, Thu May 8 20:49:12 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
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# 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
63 115
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
64#endif 132#endif
65 133
66#include <math.h> 134#include <math.h>
67#include <stdlib.h> 135#include <stdlib.h>
68#include <fcntl.h> 136#include <fcntl.h>
… …
75#include <sys/types.h> 143#include <sys/types.h>
76#include <time.h> 144#include <time.h>
77 145
78#include <signal.h> 146#include <signal.h>
79 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
80#ifndef _WIN32 154#ifndef _WIN32
81# include <unistd.h>
82# include <sys/time.h> 155# include <sys/time.h>
83# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
84#else 158#else
85# define WIN32_LEAN_AND_MEAN 159# define WIN32_LEAN_AND_MEAN
86# include <windows.h> 160# include <windows.h>
87# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
88# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
89# endif 163# endif
90#endif 164#endif
91 165
92/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
93 167
94#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
95# define EV_USE_MONOTONIC 1 169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
96#endif 178#endif
97 179
98#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 182#endif
102 183
103#ifndef EV_USE_POLL 184#ifndef EV_USE_POLL
104# ifdef _WIN32 185# ifdef _WIN32
105# define EV_USE_POLL 0 186# define EV_USE_POLL 0
… …
107# define EV_USE_POLL 1 188# define EV_USE_POLL 1
108# endif 189# endif
109#endif 190#endif
110 191
111#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
112# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
113#endif 198#endif
114 199
115#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
117#endif 202#endif
118 203
119#ifndef EV_USE_REALTIME 204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
120# define EV_USE_REALTIME 1 210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
121#endif 213# endif
214#endif
122 215
123/**/ 216#ifndef EV_PID_HASHSIZE
124 217# if EV_MINIMAL
125/* darwin simply cnanot be helped */ 218# define EV_PID_HASHSIZE 1
126#ifdef __APPLE__ 219# else
127# undef EV_USE_POLL 220# define EV_PID_HASHSIZE 16
128# undef EV_USE_KQUEUE
129#endif 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 */
130 241
131#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
132# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
133# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
134#endif 245#endif
… …
136#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
137# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
138# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
139#endif 250#endif
140 251
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
141#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
142# include <winsock.h> 268# include <winsock.h>
143#endif 269#endif
144 270
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
145/**/ 283/**/
146 284
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 */
294
147#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) */
148#define MAX_BLOCKTIME 59.731 /* 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) */
149#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150/*#define CLEANUP_INTERVAL 300. /* 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 */
151 298
152#ifdef EV_H
153# include EV_H
154#else
155# include "ev.h"
156#endif
157
158#if __GNUC__ >= 3 299#if __GNUC__ >= 4
159# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
160# define inline inline 301# define noinline __attribute__ ((noinline))
161#else 302#else
162# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
163# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
164#endif 308#endif
165 309
166#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
167#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
168 319
169#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171 322
172#define EMPTY /* required for microsofts broken pseudo-c compiler */ 323#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */
173 325
174typedef struct ev_watcher *W; 326typedef ev_watcher *W;
175typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
176typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
177 329
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 */
178static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
179 338
180#ifdef _WIN32 339#ifdef _WIN32
181# include "ev_win32.c" 340# include "ev_win32.c"
182#endif 341#endif
183 342
184/*****************************************************************************/ 343/*****************************************************************************/
185 344
186static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
187 346
347void
188void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
189{ 349{
190 syserr_cb = cb; 350 syserr_cb = cb;
191} 351}
192 352
193static void 353static void noinline
194syserr (const char *msg) 354syserr (const char *msg)
195{ 355{
196 if (!msg) 356 if (!msg)
197 msg = "(libev) system error"; 357 msg = "(libev) system error";
198 358
… …
203 perror (msg); 363 perror (msg);
204 abort (); 364 abort ();
205 } 365 }
206} 366}
207 367
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
208static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
209 384
385void
210void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
211{ 387{
212 alloc = cb; 388 alloc = cb;
213} 389}
214 390
215static void * 391inline_speed void *
216ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
217{ 393{
218 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
219 395
220 if (!ptr && size) 396 if (!ptr && size)
221 { 397 {
222 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
223 abort (); 399 abort ();
… …
244typedef struct 420typedef struct
245{ 421{
246 W w; 422 W w;
247 int events; 423 int events;
248} ANPENDING; 424} ANPENDING;
425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
249 432
250#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
251 434
252 struct ev_loop 435 struct ev_loop
253 { 436 {
… …
257 #include "ev_vars.h" 440 #include "ev_vars.h"
258 #undef VAR 441 #undef VAR
259 }; 442 };
260 #include "ev_wrap.h" 443 #include "ev_wrap.h"
261 444
262 struct ev_loop default_loop_struct; 445 static struct ev_loop default_loop_struct;
263 static struct ev_loop *default_loop; 446 struct ev_loop *ev_default_loop_ptr;
264 447
265#else 448#else
266 449
267 ev_tstamp ev_rt_now; 450 ev_tstamp ev_rt_now;
268 #define VAR(name,decl) static decl; 451 #define VAR(name,decl) static decl;
269 #include "ev_vars.h" 452 #include "ev_vars.h"
270 #undef VAR 453 #undef VAR
271 454
272 static int default_loop; 455 static int ev_default_loop_ptr;
273 456
274#endif 457#endif
275 458
276/*****************************************************************************/ 459/*****************************************************************************/
277 460
… …
287 gettimeofday (&tv, 0); 470 gettimeofday (&tv, 0);
288 return tv.tv_sec + tv.tv_usec * 1e-6; 471 return tv.tv_sec + tv.tv_usec * 1e-6;
289#endif 472#endif
290} 473}
291 474
292inline ev_tstamp 475ev_tstamp inline_size
293get_clock (void) 476get_clock (void)
294{ 477{
295#if EV_USE_MONOTONIC 478#if EV_USE_MONOTONIC
296 if (expect_true (have_monotonic)) 479 if (expect_true (have_monotonic))
297 { 480 {
… …
310{ 493{
311 return ev_rt_now; 494 return ev_rt_now;
312} 495}
313#endif 496#endif
314 497
315#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}
316 554
317#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
318 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
319 { \ 557 { \
320 int newcnt = cur; \ 558 int ocur_ = (cur); \
321 do \ 559 (base) = (type *)array_realloc \
322 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
323 newcnt = array_roundsize (type, newcnt << 1); \ 561 init ((base) + (ocur_), (cur) - ocur_); \
324 } \
325 while ((cnt) > newcnt); \
326 \
327 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
328 init (base + cur, newcnt - cur); \
329 cur = newcnt; \
330 } 562 }
331 563
564#if 0
332#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
333 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
334 { \ 567 { \
335 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
336 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
337 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
338 } 571 }
572#endif
339 573
340#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
341 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;
342 576
343/*****************************************************************************/ 577/*****************************************************************************/
344 578
345static 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
346anfds_init (ANFD *base, int count) 608anfds_init (ANFD *base, int count)
347{ 609{
348 while (count--) 610 while (count--)
349 { 611 {
350 base->head = 0; 612 base->head = 0;
… …
353 615
354 ++base; 616 ++base;
355 } 617 }
356} 618}
357 619
358void 620void inline_speed
359ev_feed_event (EV_P_ void *w, int revents)
360{
361 W w_ = (W)w;
362
363 if (w_->pending)
364 {
365 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
366 return;
367 }
368
369 w_->pending = ++pendingcnt [ABSPRI (w_)];
370 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
371 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
372 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
373}
374
375static void
376queue_events (EV_P_ W *events, int eventcnt, int type)
377{
378 int i;
379
380 for (i = 0; i < eventcnt; ++i)
381 ev_feed_event (EV_A_ events [i], type);
382}
383
384inline void
385fd_event (EV_P_ int fd, int revents) 621fd_event (EV_P_ int fd, int revents)
386{ 622{
387 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 624 ev_io *w;
389 625
390 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)
391 { 627 {
392 int ev = w->events & revents; 628 int ev = w->events & revents;
393 629
394 if (ev) 630 if (ev)
395 ev_feed_event (EV_A_ (W)w, ev); 631 ev_feed_event (EV_A_ (W)w, ev);
… …
397} 633}
398 634
399void 635void
400ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
401{ 637{
638 if (fd >= 0 && fd < anfdmax)
402 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
403} 640}
404 641
405/*****************************************************************************/ 642void inline_size
406
407static void
408fd_reify (EV_P) 643fd_reify (EV_P)
409{ 644{
410 int i; 645 int i;
411 646
412 for (i = 0; i < fdchangecnt; ++i) 647 for (i = 0; i < fdchangecnt; ++i)
413 { 648 {
414 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
415 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
416 struct ev_io *w; 651 ev_io *w;
417 652
418 int events = 0; 653 unsigned char events = 0;
419 654
420 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)
421 events |= w->events; 656 events |= (unsigned char)w->events;
422 657
423#if EV_SELECT_IS_WINSOCKET 658#if EV_SELECT_IS_WINSOCKET
424 if (events) 659 if (events)
425 { 660 {
426 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
427 anfd->handle = _get_osfhandle (fd); 665 anfd->handle = _get_osfhandle (fd);
666 #endif
428 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));
429 } 668 }
430#endif 669#endif
431 670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
432 anfd->reify = 0; 675 anfd->reify = 0;
433
434 method_modify (EV_A_ fd, anfd->events, events);
435 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 }
436 } 681 }
437 682
438 fdchangecnt = 0; 683 fdchangecnt = 0;
439} 684}
440 685
441static void 686void inline_size
442fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
443{ 688{
444 if (anfds [fd].reify) 689 unsigned char reify = anfds [fd].reify;
445 return;
446
447 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
448 691
692 if (expect_true (!reify))
693 {
449 ++fdchangecnt; 694 ++fdchangecnt;
450 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
451 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
452} 698}
453 699
454static void 700void inline_speed
455fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
456{ 702{
457 struct ev_io *w; 703 ev_io *w;
458 704
459 while ((w = (struct ev_io *)anfds [fd].head)) 705 while ((w = (ev_io *)anfds [fd].head))
460 { 706 {
461 ev_io_stop (EV_A_ w); 707 ev_io_stop (EV_A_ w);
462 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);
463 } 709 }
464} 710}
465 711
466static int 712int inline_size
467fd_valid (int fd) 713fd_valid (int fd)
468{ 714{
469#ifdef _WIN32 715#ifdef _WIN32
470 return _get_osfhandle (fd) != -1; 716 return _get_osfhandle (fd) != -1;
471#else 717#else
472 return fcntl (fd, F_GETFD) != -1; 718 return fcntl (fd, F_GETFD) != -1;
473#endif 719#endif
474} 720}
475 721
476/* called on EBADF to verify fds */ 722/* called on EBADF to verify fds */
477static void 723static void noinline
478fd_ebadf (EV_P) 724fd_ebadf (EV_P)
479{ 725{
480 int fd; 726 int fd;
481 727
482 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
… …
484 if (!fd_valid (fd) == -1 && errno == EBADF) 730 if (!fd_valid (fd) == -1 && errno == EBADF)
485 fd_kill (EV_A_ fd); 731 fd_kill (EV_A_ fd);
486} 732}
487 733
488/* 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 */
489static void 735static void noinline
490fd_enomem (EV_P) 736fd_enomem (EV_P)
491{ 737{
492 int fd; 738 int fd;
493 739
494 for (fd = anfdmax; fd--; ) 740 for (fd = anfdmax; fd--; )
… …
497 fd_kill (EV_A_ fd); 743 fd_kill (EV_A_ fd);
498 return; 744 return;
499 } 745 }
500} 746}
501 747
502/* 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 */
503static void 749static void noinline
504fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
505{ 751{
506 int fd; 752 int fd;
507 753
508 /* this should be highly optimised to not do anything but set a flag */
509 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
510 if (anfds [fd].events) 755 if (anfds [fd].events)
511 { 756 {
512 anfds [fd].events = 0; 757 anfds [fd].events = 0;
513 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
514 } 759 }
515} 760}
516 761
517/*****************************************************************************/ 762/*****************************************************************************/
518 763
519static 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#define USE_4HEAP 1/* they do not work corretcly */
772#if USE_4HEAP
773
774#define DHEAP 4
775#define HEAP0 (DHEAP - 1) /* index of first element in heap */
776
777/* towards the root */
778void inline_speed
520upheap (WT *heap, int k) 779upheap (WT *heap, int k)
521{ 780{
522 WT w = heap [k]; 781 WT w = heap [k];
523 782
524 while (k && heap [k >> 1]->at > w->at) 783 for (;;)
525 { 784 {
785 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787 if (p == k || heap [p]->at <= w->at)
788 break;
789
526 heap [k] = heap [k >> 1]; 790 heap [k] = heap [p];
527 ((W)heap [k])->active = k + 1; 791 ev_active (heap [k]) = k;
528 k >>= 1; 792 k = p;
529 } 793 }
530 794
531 heap [k] = w; 795 heap [k] = w;
532 ((W)heap [k])->active = k + 1; 796 ev_active (heap [k]) = k;
533
534} 797}
535 798
536static void 799/* away from the root */
800void inline_speed
537downheap (WT *heap, int N, int k) 801downheap (WT *heap, int N, int k)
538{ 802{
539 WT w = heap [k]; 803 WT w = heap [k];
804 WT *E = heap + N + HEAP0;
540 805
541 while (k < (N >> 1)) 806 for (;;)
542 { 807 {
543 int j = k << 1; 808 ev_tstamp minat;
809 WT *minpos;
810 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
544 811
545 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 812 // find minimum child
813 if (expect_true (pos + DHEAP - 1 < E))
546 ++j; 814 {
815 /* fast path */
816 (minpos = pos + 0), (minat = (*minpos)->at);
817 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
818 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
819 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
820 }
821 else
822 {
823 /* slow path */
824 if (pos >= E)
825 break;
826 (minpos = pos + 0), (minat = (*minpos)->at);
827 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830 }
547 831
548 if (w->at <= heap [j]->at) 832 if (w->at <= minat)
549 break; 833 break;
550 834
551 heap [k] = heap [j]; 835 ev_active (*minpos) = k;
552 ((W)heap [k])->active = k + 1; 836 heap [k] = *minpos;
553 k = j; 837
838 k = minpos - heap;
554 } 839 }
555 840
556 heap [k] = w; 841 heap [k] = w;
842 ev_active (heap [k]) = k;
843}
844
845#else // 4HEAP
846
847#define HEAP0 1
848
849/* towards the root */
850void inline_speed
851upheap (WT *heap, int k)
852{
853 WT w = heap [k];
854
855 for (;;)
856 {
857 int p = k >> 1;
858
859 /* maybe we could use a dummy element at heap [0]? */
860 if (!p || heap [p]->at <= w->at)
861 break;
862
863 heap [k] = heap [p];
864 ev_active (heap [k]) = k;
865 k = p;
866 }
867
868 heap [k] = w;
869 ev_active (heap [k]) = k;
870}
871
872/* away from the root */
873void inline_speed
874downheap (WT *heap, int N, int k)
875{
876 WT w = heap [k];
877
878 for (;;)
879 {
880 int c = k << 1;
881
882 if (c > N)
883 break;
884
885 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886 ? 1 : 0;
887
888 if (w->at <= heap [c]->at)
889 break;
890
891 heap [k] = heap [c];
557 ((W)heap [k])->active = k + 1; 892 ((W)heap [k])->active = k;
558} 893
894 k = c;
895 }
559 896
560inline void 897 heap [k] = w;
898 ev_active (heap [k]) = k;
899}
900#endif
901
902void inline_size
561adjustheap (WT *heap, int N, int k) 903adjustheap (WT *heap, int N, int k)
562{ 904{
563 upheap (heap, k); 905 upheap (heap, k);
564 downheap (heap, N, k); 906 downheap (heap, N, k);
565} 907}
… …
567/*****************************************************************************/ 909/*****************************************************************************/
568 910
569typedef struct 911typedef struct
570{ 912{
571 WL head; 913 WL head;
572 sig_atomic_t volatile gotsig; 914 EV_ATOMIC_T gotsig;
573} ANSIG; 915} ANSIG;
574 916
575static ANSIG *signals; 917static ANSIG *signals;
576static int signalmax; 918static int signalmax;
577 919
578static int sigpipe [2]; 920static EV_ATOMIC_T gotsig;
579static sig_atomic_t volatile gotsig;
580static struct ev_io sigev;
581 921
582static void 922void inline_size
583signals_init (ANSIG *base, int count) 923signals_init (ANSIG *base, int count)
584{ 924{
585 while (count--) 925 while (count--)
586 { 926 {
587 base->head = 0; 927 base->head = 0;
… …
589 929
590 ++base; 930 ++base;
591 } 931 }
592} 932}
593 933
594static void 934/*****************************************************************************/
595sighandler (int signum)
596{
597#if _WIN32
598 signal (signum, sighandler);
599#endif
600 935
601 signals [signum - 1].gotsig = 1; 936void inline_speed
602
603 if (!gotsig)
604 {
605 int old_errno = errno;
606 gotsig = 1;
607 write (sigpipe [1], &signum, 1);
608 errno = old_errno;
609 }
610}
611
612void
613ev_feed_signal_event (EV_P_ int signum)
614{
615 WL w;
616
617#if EV_MULTIPLICITY
618 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
619#endif
620
621 --signum;
622
623 if (signum < 0 || signum >= signalmax)
624 return;
625
626 signals [signum].gotsig = 0;
627
628 for (w = signals [signum].head; w; w = w->next)
629 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630}
631
632static void
633sigcb (EV_P_ struct ev_io *iow, int revents)
634{
635 int signum;
636
637 read (sigpipe [0], &revents, 1);
638 gotsig = 0;
639
640 for (signum = signalmax; signum--; )
641 if (signals [signum].gotsig)
642 ev_feed_signal_event (EV_A_ signum + 1);
643}
644
645inline void
646fd_intern (int fd) 937fd_intern (int fd)
647{ 938{
648#ifdef _WIN32 939#ifdef _WIN32
649 int arg = 1; 940 int arg = 1;
650 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 941 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
652 fcntl (fd, F_SETFD, FD_CLOEXEC); 943 fcntl (fd, F_SETFD, FD_CLOEXEC);
653 fcntl (fd, F_SETFL, O_NONBLOCK); 944 fcntl (fd, F_SETFL, O_NONBLOCK);
654#endif 945#endif
655} 946}
656 947
948static void noinline
949evpipe_init (EV_P)
950{
951 if (!ev_is_active (&pipeev))
952 {
953#if EV_USE_EVENTFD
954 if ((evfd = eventfd (0, 0)) >= 0)
955 {
956 evpipe [0] = -1;
957 fd_intern (evfd);
958 ev_io_set (&pipeev, evfd, EV_READ);
959 }
960 else
961#endif
962 {
963 while (pipe (evpipe))
964 syserr ("(libev) error creating signal/async pipe");
965
966 fd_intern (evpipe [0]);
967 fd_intern (evpipe [1]);
968 ev_io_set (&pipeev, evpipe [0], EV_READ);
969 }
970
971 ev_io_start (EV_A_ &pipeev);
972 ev_unref (EV_A); /* watcher should not keep loop alive */
973 }
974}
975
976void inline_size
977evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978{
979 if (!*flag)
980 {
981 int old_errno = errno; /* save errno because write might clobber it */
982
983 *flag = 1;
984
985#if EV_USE_EVENTFD
986 if (evfd >= 0)
987 {
988 uint64_t counter = 1;
989 write (evfd, &counter, sizeof (uint64_t));
990 }
991 else
992#endif
993 write (evpipe [1], &old_errno, 1);
994
995 errno = old_errno;
996 }
997}
998
657static void 999static void
658siginit (EV_P) 1000pipecb (EV_P_ ev_io *iow, int revents)
659{ 1001{
660 fd_intern (sigpipe [0]); 1002#if EV_USE_EVENTFD
661 fd_intern (sigpipe [1]); 1003 if (evfd >= 0)
1004 {
1005 uint64_t counter;
1006 read (evfd, &counter, sizeof (uint64_t));
1007 }
1008 else
1009#endif
1010 {
1011 char dummy;
1012 read (evpipe [0], &dummy, 1);
1013 }
662 1014
663 ev_io_set (&sigev, sigpipe [0], EV_READ); 1015 if (gotsig && ev_is_default_loop (EV_A))
664 ev_io_start (EV_A_ &sigev); 1016 {
665 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1017 int signum;
1018 gotsig = 0;
1019
1020 for (signum = signalmax; signum--; )
1021 if (signals [signum].gotsig)
1022 ev_feed_signal_event (EV_A_ signum + 1);
1023 }
1024
1025#if EV_ASYNC_ENABLE
1026 if (gotasync)
1027 {
1028 int i;
1029 gotasync = 0;
1030
1031 for (i = asynccnt; i--; )
1032 if (asyncs [i]->sent)
1033 {
1034 asyncs [i]->sent = 0;
1035 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1036 }
1037 }
1038#endif
666} 1039}
667 1040
668/*****************************************************************************/ 1041/*****************************************************************************/
669 1042
670static struct ev_child *childs [PID_HASHSIZE]; 1043static void
1044ev_sighandler (int signum)
1045{
1046#if EV_MULTIPLICITY
1047 struct ev_loop *loop = &default_loop_struct;
1048#endif
1049
1050#if _WIN32
1051 signal (signum, ev_sighandler);
1052#endif
1053
1054 signals [signum - 1].gotsig = 1;
1055 evpipe_write (EV_A_ &gotsig);
1056}
1057
1058void noinline
1059ev_feed_signal_event (EV_P_ int signum)
1060{
1061 WL w;
1062
1063#if EV_MULTIPLICITY
1064 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1065#endif
1066
1067 --signum;
1068
1069 if (signum < 0 || signum >= signalmax)
1070 return;
1071
1072 signals [signum].gotsig = 0;
1073
1074 for (w = signals [signum].head; w; w = w->next)
1075 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1076}
1077
1078/*****************************************************************************/
1079
1080static WL childs [EV_PID_HASHSIZE];
671 1081
672#ifndef _WIN32 1082#ifndef _WIN32
673 1083
674static struct ev_signal childev; 1084static ev_signal childev;
1085
1086#ifndef WIFCONTINUED
1087# define WIFCONTINUED(status) 0
1088#endif
1089
1090void inline_speed
1091child_reap (EV_P_ int chain, int pid, int status)
1092{
1093 ev_child *w;
1094 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095
1096 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1097 {
1098 if ((w->pid == pid || !w->pid)
1099 && (!traced || (w->flags & 1)))
1100 {
1101 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1102 w->rpid = pid;
1103 w->rstatus = status;
1104 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1105 }
1106 }
1107}
675 1108
676#ifndef WCONTINUED 1109#ifndef WCONTINUED
677# define WCONTINUED 0 1110# define WCONTINUED 0
678#endif 1111#endif
679 1112
680static void 1113static void
681child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
682{
683 struct ev_child *w;
684
685 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
686 if (w->pid == pid || !w->pid)
687 {
688 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
689 w->rpid = pid;
690 w->rstatus = status;
691 ev_feed_event (EV_A_ (W)w, EV_CHILD);
692 }
693}
694
695static void
696childcb (EV_P_ struct ev_signal *sw, int revents) 1114childcb (EV_P_ ev_signal *sw, int revents)
697{ 1115{
698 int pid, status; 1116 int pid, status;
699 1117
1118 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
700 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1119 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
701 { 1120 if (!WCONTINUED
1121 || errno != EINVAL
1122 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1123 return;
1124
702 /* make sure we are called again until all childs have been reaped */ 1125 /* make sure we are called again until all children have been reaped */
1126 /* we need to do it this way so that the callback gets called before we continue */
703 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1127 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
704 1128
705 child_reap (EV_A_ sw, pid, pid, status); 1129 child_reap (EV_A_ pid, pid, status);
1130 if (EV_PID_HASHSIZE > 1)
706 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1131 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
707 }
708} 1132}
709 1133
710#endif 1134#endif
711 1135
712/*****************************************************************************/ 1136/*****************************************************************************/
713 1137
1138#if EV_USE_PORT
1139# include "ev_port.c"
1140#endif
714#if EV_USE_KQUEUE 1141#if EV_USE_KQUEUE
715# include "ev_kqueue.c" 1142# include "ev_kqueue.c"
716#endif 1143#endif
717#if EV_USE_EPOLL 1144#if EV_USE_EPOLL
718# include "ev_epoll.c" 1145# include "ev_epoll.c"
… …
735{ 1162{
736 return EV_VERSION_MINOR; 1163 return EV_VERSION_MINOR;
737} 1164}
738 1165
739/* return true if we are running with elevated privileges and should ignore env variables */ 1166/* return true if we are running with elevated privileges and should ignore env variables */
740static int 1167int inline_size
741enable_secure (void) 1168enable_secure (void)
742{ 1169{
743#ifdef _WIN32 1170#ifdef _WIN32
744 return 0; 1171 return 0;
745#else 1172#else
746 return getuid () != geteuid () 1173 return getuid () != geteuid ()
747 || getgid () != getegid (); 1174 || getgid () != getegid ();
748#endif 1175#endif
749} 1176}
750 1177
751int 1178unsigned int
752ev_method (EV_P) 1179ev_supported_backends (void)
753{ 1180{
754 return method; 1181 unsigned int flags = 0;
755}
756 1182
757static void 1183 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
758loop_init (EV_P_ int methods) 1184 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1185 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1186 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1187 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1188
1189 return flags;
1190}
1191
1192unsigned int
1193ev_recommended_backends (void)
759{ 1194{
760 if (!method) 1195 unsigned int flags = ev_supported_backends ();
1196
1197#ifndef __NetBSD__
1198 /* kqueue is borked on everything but netbsd apparently */
1199 /* it usually doesn't work correctly on anything but sockets and pipes */
1200 flags &= ~EVBACKEND_KQUEUE;
1201#endif
1202#ifdef __APPLE__
1203 // flags &= ~EVBACKEND_KQUEUE; for documentation
1204 flags &= ~EVBACKEND_POLL;
1205#endif
1206
1207 return flags;
1208}
1209
1210unsigned int
1211ev_embeddable_backends (void)
1212{
1213 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1214
1215 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1216 /* please fix it and tell me how to detect the fix */
1217 flags &= ~EVBACKEND_EPOLL;
1218
1219 return flags;
1220}
1221
1222unsigned int
1223ev_backend (EV_P)
1224{
1225 return backend;
1226}
1227
1228unsigned int
1229ev_loop_count (EV_P)
1230{
1231 return loop_count;
1232}
1233
1234void
1235ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1236{
1237 io_blocktime = interval;
1238}
1239
1240void
1241ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242{
1243 timeout_blocktime = interval;
1244}
1245
1246static void noinline
1247loop_init (EV_P_ unsigned int flags)
1248{
1249 if (!backend)
761 { 1250 {
762#if EV_USE_MONOTONIC 1251#if EV_USE_MONOTONIC
763 { 1252 {
764 struct timespec ts; 1253 struct timespec ts;
765 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1254 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
766 have_monotonic = 1; 1255 have_monotonic = 1;
767 } 1256 }
768#endif 1257#endif
769 1258
770 ev_rt_now = ev_time (); 1259 ev_rt_now = ev_time ();
771 mn_now = get_clock (); 1260 mn_now = get_clock ();
772 now_floor = mn_now; 1261 now_floor = mn_now;
773 rtmn_diff = ev_rt_now - mn_now; 1262 rtmn_diff = ev_rt_now - mn_now;
774 1263
775 if (methods == EVMETHOD_AUTO) 1264 io_blocktime = 0.;
776 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1265 timeout_blocktime = 0.;
1266 backend = 0;
1267 backend_fd = -1;
1268 gotasync = 0;
1269#if EV_USE_INOTIFY
1270 fs_fd = -2;
1271#endif
1272
1273 /* pid check not overridable via env */
1274#ifndef _WIN32
1275 if (flags & EVFLAG_FORKCHECK)
1276 curpid = getpid ();
1277#endif
1278
1279 if (!(flags & EVFLAG_NOENV)
1280 && !enable_secure ()
1281 && getenv ("LIBEV_FLAGS"))
777 methods = atoi (getenv ("LIBEV_METHODS")); 1282 flags = atoi (getenv ("LIBEV_FLAGS"));
778 else
779 methods = EVMETHOD_ANY;
780 1283
781 method = 0; 1284 if (!(flags & 0x0000ffffU))
1285 flags |= ev_recommended_backends ();
1286
1287#if EV_USE_PORT
1288 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1289#endif
782#if EV_USE_KQUEUE 1290#if EV_USE_KQUEUE
783 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1291 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
784#endif 1292#endif
785#if EV_USE_EPOLL 1293#if EV_USE_EPOLL
786 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1294 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
787#endif 1295#endif
788#if EV_USE_POLL 1296#if EV_USE_POLL
789 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1297 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
790#endif 1298#endif
791#if EV_USE_SELECT 1299#if EV_USE_SELECT
792 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1300 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
793#endif 1301#endif
794 1302
795 ev_init (&sigev, sigcb); 1303 ev_init (&pipeev, pipecb);
796 ev_set_priority (&sigev, EV_MAXPRI); 1304 ev_set_priority (&pipeev, EV_MAXPRI);
797 } 1305 }
798} 1306}
799 1307
800void 1308static void noinline
801loop_destroy (EV_P) 1309loop_destroy (EV_P)
802{ 1310{
803 int i; 1311 int i;
804 1312
1313 if (ev_is_active (&pipeev))
1314 {
1315 ev_ref (EV_A); /* signal watcher */
1316 ev_io_stop (EV_A_ &pipeev);
1317
1318#if EV_USE_EVENTFD
1319 if (evfd >= 0)
1320 close (evfd);
1321#endif
1322
1323 if (evpipe [0] >= 0)
1324 {
1325 close (evpipe [0]);
1326 close (evpipe [1]);
1327 }
1328 }
1329
1330#if EV_USE_INOTIFY
1331 if (fs_fd >= 0)
1332 close (fs_fd);
1333#endif
1334
1335 if (backend_fd >= 0)
1336 close (backend_fd);
1337
1338#if EV_USE_PORT
1339 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1340#endif
805#if EV_USE_KQUEUE 1341#if EV_USE_KQUEUE
806 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1342 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
807#endif 1343#endif
808#if EV_USE_EPOLL 1344#if EV_USE_EPOLL
809 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1345 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
810#endif 1346#endif
811#if EV_USE_POLL 1347#if EV_USE_POLL
812 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1348 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
813#endif 1349#endif
814#if EV_USE_SELECT 1350#if EV_USE_SELECT
815 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1351 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
816#endif 1352#endif
817 1353
818 for (i = NUMPRI; i--; ) 1354 for (i = NUMPRI; i--; )
1355 {
819 array_free (pending, [i]); 1356 array_free (pending, [i]);
1357#if EV_IDLE_ENABLE
1358 array_free (idle, [i]);
1359#endif
1360 }
1361
1362 ev_free (anfds); anfdmax = 0;
820 1363
821 /* have to use the microsoft-never-gets-it-right macro */ 1364 /* have to use the microsoft-never-gets-it-right macro */
822 array_free (fdchange, EMPTY); 1365 array_free (fdchange, EMPTY);
823 array_free (timer, EMPTY); 1366 array_free (timer, EMPTY);
824#if EV_PERIODICS 1367#if EV_PERIODIC_ENABLE
825 array_free (periodic, EMPTY); 1368 array_free (periodic, EMPTY);
826#endif 1369#endif
1370#if EV_FORK_ENABLE
827 array_free (idle, EMPTY); 1371 array_free (fork, EMPTY);
1372#endif
828 array_free (prepare, EMPTY); 1373 array_free (prepare, EMPTY);
829 array_free (check, EMPTY); 1374 array_free (check, EMPTY);
1375#if EV_ASYNC_ENABLE
1376 array_free (async, EMPTY);
1377#endif
830 1378
831 method = 0; 1379 backend = 0;
832} 1380}
833 1381
834static void 1382#if EV_USE_INOTIFY
1383void inline_size infy_fork (EV_P);
1384#endif
1385
1386void inline_size
835loop_fork (EV_P) 1387loop_fork (EV_P)
836{ 1388{
1389#if EV_USE_PORT
1390 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391#endif
1392#if EV_USE_KQUEUE
1393 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1394#endif
837#if EV_USE_EPOLL 1395#if EV_USE_EPOLL
838 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1396 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
839#endif 1397#endif
840#if EV_USE_KQUEUE 1398#if EV_USE_INOTIFY
841 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1399 infy_fork (EV_A);
842#endif 1400#endif
843 1401
844 if (ev_is_active (&sigev)) 1402 if (ev_is_active (&pipeev))
845 { 1403 {
846 /* default loop */ 1404 /* this "locks" the handlers against writing to the pipe */
1405 /* while we modify the fd vars */
1406 gotsig = 1;
1407#if EV_ASYNC_ENABLE
1408 gotasync = 1;
1409#endif
847 1410
848 ev_ref (EV_A); 1411 ev_ref (EV_A);
849 ev_io_stop (EV_A_ &sigev); 1412 ev_io_stop (EV_A_ &pipeev);
1413
1414#if EV_USE_EVENTFD
1415 if (evfd >= 0)
1416 close (evfd);
1417#endif
1418
1419 if (evpipe [0] >= 0)
1420 {
850 close (sigpipe [0]); 1421 close (evpipe [0]);
851 close (sigpipe [1]); 1422 close (evpipe [1]);
1423 }
852 1424
853 while (pipe (sigpipe))
854 syserr ("(libev) error creating pipe");
855
856 siginit (EV_A); 1425 evpipe_init (EV_A);
1426 /* now iterate over everything, in case we missed something */
1427 pipecb (EV_A_ &pipeev, EV_READ);
857 } 1428 }
858 1429
859 postfork = 0; 1430 postfork = 0;
860} 1431}
861 1432
862#if EV_MULTIPLICITY 1433#if EV_MULTIPLICITY
863struct ev_loop * 1434struct ev_loop *
864ev_loop_new (int methods) 1435ev_loop_new (unsigned int flags)
865{ 1436{
866 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1437 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
867 1438
868 memset (loop, 0, sizeof (struct ev_loop)); 1439 memset (loop, 0, sizeof (struct ev_loop));
869 1440
870 loop_init (EV_A_ methods); 1441 loop_init (EV_A_ flags);
871 1442
872 if (ev_method (EV_A)) 1443 if (ev_backend (EV_A))
873 return loop; 1444 return loop;
874 1445
875 return 0; 1446 return 0;
876} 1447}
877 1448
… …
883} 1454}
884 1455
885void 1456void
886ev_loop_fork (EV_P) 1457ev_loop_fork (EV_P)
887{ 1458{
888 postfork = 1; 1459 postfork = 1; /* must be in line with ev_default_fork */
889} 1460}
890
891#endif 1461#endif
892 1462
893#if EV_MULTIPLICITY 1463#if EV_MULTIPLICITY
894struct ev_loop * 1464struct ev_loop *
1465ev_default_loop_init (unsigned int flags)
895#else 1466#else
896int 1467int
1468ev_default_loop (unsigned int flags)
897#endif 1469#endif
898ev_default_loop (int methods)
899{ 1470{
900 if (sigpipe [0] == sigpipe [1])
901 if (pipe (sigpipe))
902 return 0;
903
904 if (!default_loop) 1471 if (!ev_default_loop_ptr)
905 { 1472 {
906#if EV_MULTIPLICITY 1473#if EV_MULTIPLICITY
907 struct ev_loop *loop = default_loop = &default_loop_struct; 1474 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
908#else 1475#else
909 default_loop = 1; 1476 ev_default_loop_ptr = 1;
910#endif 1477#endif
911 1478
912 loop_init (EV_A_ methods); 1479 loop_init (EV_A_ flags);
913 1480
914 if (ev_method (EV_A)) 1481 if (ev_backend (EV_A))
915 { 1482 {
916 siginit (EV_A);
917
918#ifndef _WIN32 1483#ifndef _WIN32
919 ev_signal_init (&childev, childcb, SIGCHLD); 1484 ev_signal_init (&childev, childcb, SIGCHLD);
920 ev_set_priority (&childev, EV_MAXPRI); 1485 ev_set_priority (&childev, EV_MAXPRI);
921 ev_signal_start (EV_A_ &childev); 1486 ev_signal_start (EV_A_ &childev);
922 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1487 ev_unref (EV_A); /* child watcher should not keep loop alive */
923#endif 1488#endif
924 } 1489 }
925 else 1490 else
926 default_loop = 0; 1491 ev_default_loop_ptr = 0;
927 } 1492 }
928 1493
929 return default_loop; 1494 return ev_default_loop_ptr;
930} 1495}
931 1496
932void 1497void
933ev_default_destroy (void) 1498ev_default_destroy (void)
934{ 1499{
935#if EV_MULTIPLICITY 1500#if EV_MULTIPLICITY
936 struct ev_loop *loop = default_loop; 1501 struct ev_loop *loop = ev_default_loop_ptr;
937#endif 1502#endif
938 1503
939#ifndef _WIN32 1504#ifndef _WIN32
940 ev_ref (EV_A); /* child watcher */ 1505 ev_ref (EV_A); /* child watcher */
941 ev_signal_stop (EV_A_ &childev); 1506 ev_signal_stop (EV_A_ &childev);
942#endif 1507#endif
943 1508
944 ev_ref (EV_A); /* signal watcher */
945 ev_io_stop (EV_A_ &sigev);
946
947 close (sigpipe [0]); sigpipe [0] = 0;
948 close (sigpipe [1]); sigpipe [1] = 0;
949
950 loop_destroy (EV_A); 1509 loop_destroy (EV_A);
951} 1510}
952 1511
953void 1512void
954ev_default_fork (void) 1513ev_default_fork (void)
955{ 1514{
956#if EV_MULTIPLICITY 1515#if EV_MULTIPLICITY
957 struct ev_loop *loop = default_loop; 1516 struct ev_loop *loop = ev_default_loop_ptr;
958#endif 1517#endif
959 1518
960 if (method) 1519 if (backend)
961 postfork = 1; 1520 postfork = 1; /* must be in line with ev_loop_fork */
962} 1521}
963 1522
964/*****************************************************************************/ 1523/*****************************************************************************/
965 1524
966static int 1525void
967any_pending (EV_P) 1526ev_invoke (EV_P_ void *w, int revents)
968{ 1527{
969 int pri; 1528 EV_CB_INVOKE ((W)w, revents);
970
971 for (pri = NUMPRI; pri--; )
972 if (pendingcnt [pri])
973 return 1;
974
975 return 0;
976} 1529}
977 1530
978static void 1531void inline_speed
979call_pending (EV_P) 1532call_pending (EV_P)
980{ 1533{
981 int pri; 1534 int pri;
982 1535
983 for (pri = NUMPRI; pri--; ) 1536 for (pri = NUMPRI; pri--; )
984 while (pendingcnt [pri]) 1537 while (pendingcnt [pri])
985 { 1538 {
986 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1539 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
987 1540
988 if (p->w) 1541 if (expect_true (p->w))
989 { 1542 {
1543 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1544
990 p->w->pending = 0; 1545 p->w->pending = 0;
991 EV_CB_INVOKE (p->w, p->events); 1546 EV_CB_INVOKE (p->w, p->events);
992 } 1547 }
993 } 1548 }
994} 1549}
995 1550
996static void 1551#if EV_IDLE_ENABLE
1552void inline_size
1553idle_reify (EV_P)
1554{
1555 if (expect_false (idleall))
1556 {
1557 int pri;
1558
1559 for (pri = NUMPRI; pri--; )
1560 {
1561 if (pendingcnt [pri])
1562 break;
1563
1564 if (idlecnt [pri])
1565 {
1566 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1567 break;
1568 }
1569 }
1570 }
1571}
1572#endif
1573
1574void inline_size
997timers_reify (EV_P) 1575timers_reify (EV_P)
998{ 1576{
999 while (timercnt && ((WT)timers [0])->at <= mn_now) 1577 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
1000 { 1578 {
1001 struct ev_timer *w = timers [0]; 1579 ev_timer *w = (ev_timer *)timers [HEAP0];
1002 1580
1003 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1581 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1004 1582
1005 /* first reschedule or stop timer */ 1583 /* first reschedule or stop timer */
1006 if (w->repeat) 1584 if (w->repeat)
1007 { 1585 {
1008 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1586 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1009 1587
1010 ((WT)w)->at += w->repeat; 1588 ev_at (w) += w->repeat;
1011 if (((WT)w)->at < mn_now) 1589 if (ev_at (w) < mn_now)
1012 ((WT)w)->at = mn_now; 1590 ev_at (w) = mn_now;
1013 1591
1014 downheap ((WT *)timers, timercnt, 0); 1592 downheap (timers, timercnt, HEAP0);
1015 } 1593 }
1016 else 1594 else
1017 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1595 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1596
1019 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1597 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1020 } 1598 }
1021} 1599}
1022 1600
1023#if EV_PERIODICS 1601#if EV_PERIODIC_ENABLE
1024static void 1602void inline_size
1025periodics_reify (EV_P) 1603periodics_reify (EV_P)
1026{ 1604{
1027 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1605 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1028 { 1606 {
1029 struct ev_periodic *w = periodics [0]; 1607 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1030 1608
1031 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1609 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1032 1610
1033 /* first reschedule or stop timer */ 1611 /* first reschedule or stop timer */
1034 if (w->reschedule_cb) 1612 if (w->reschedule_cb)
1035 { 1613 {
1036 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1614 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1037
1038 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1615 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1039 downheap ((WT *)periodics, periodiccnt, 0); 1616 downheap (periodics, periodiccnt, 1);
1040 } 1617 }
1041 else if (w->interval) 1618 else if (w->interval)
1042 { 1619 {
1043 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1620 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1044 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1622 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1045 downheap ((WT *)periodics, periodiccnt, 0); 1623 downheap (periodics, periodiccnt, HEAP0);
1046 } 1624 }
1047 else 1625 else
1048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1626 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1049 1627
1050 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1628 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1051 } 1629 }
1052} 1630}
1053 1631
1054static void 1632static void noinline
1055periodics_reschedule (EV_P) 1633periodics_reschedule (EV_P)
1056{ 1634{
1057 int i; 1635 int i;
1058 1636
1059 /* adjust periodics after time jump */ 1637 /* adjust periodics after time jump */
1060 for (i = 0; i < periodiccnt; ++i) 1638 for (i = 1; i <= periodiccnt; ++i)
1061 { 1639 {
1062 struct ev_periodic *w = periodics [i]; 1640 ev_periodic *w = (ev_periodic *)periodics [i];
1063 1641
1064 if (w->reschedule_cb) 1642 if (w->reschedule_cb)
1065 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1643 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1066 else if (w->interval) 1644 else if (w->interval)
1067 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1068 } 1646 }
1069 1647
1070 /* now rebuild the heap */ 1648 /* now rebuild the heap */
1071 for (i = periodiccnt >> 1; i--; ) 1649 for (i = periodiccnt >> 1; --i; )
1072 downheap ((WT *)periodics, periodiccnt, i); 1650 downheap (periodics, periodiccnt, i + HEAP0);
1073} 1651}
1074#endif 1652#endif
1075 1653
1076inline int 1654void inline_speed
1077time_update_monotonic (EV_P) 1655time_update (EV_P_ ev_tstamp max_block)
1078{ 1656{
1657 int i;
1658
1659#if EV_USE_MONOTONIC
1660 if (expect_true (have_monotonic))
1661 {
1662 ev_tstamp odiff = rtmn_diff;
1663
1079 mn_now = get_clock (); 1664 mn_now = get_clock ();
1080 1665
1666 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1667 /* interpolate in the meantime */
1081 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1668 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1082 { 1669 {
1083 ev_rt_now = rtmn_diff + mn_now; 1670 ev_rt_now = rtmn_diff + mn_now;
1084 return 0; 1671 return;
1085 } 1672 }
1086 else 1673
1087 {
1088 now_floor = mn_now; 1674 now_floor = mn_now;
1089 ev_rt_now = ev_time (); 1675 ev_rt_now = ev_time ();
1090 return 1;
1091 }
1092}
1093 1676
1094static void 1677 /* loop a few times, before making important decisions.
1095time_update (EV_P) 1678 * on the choice of "4": one iteration isn't enough,
1096{ 1679 * in case we get preempted during the calls to
1097 int i; 1680 * ev_time and get_clock. a second call is almost guaranteed
1098 1681 * to succeed in that case, though. and looping a few more times
1099#if EV_USE_MONOTONIC 1682 * doesn't hurt either as we only do this on time-jumps or
1100 if (expect_true (have_monotonic)) 1683 * in the unlikely event of having been preempted here.
1101 { 1684 */
1102 if (time_update_monotonic (EV_A)) 1685 for (i = 4; --i; )
1103 { 1686 {
1104 ev_tstamp odiff = rtmn_diff;
1105
1106 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1107 {
1108 rtmn_diff = ev_rt_now - mn_now; 1687 rtmn_diff = ev_rt_now - mn_now;
1109 1688
1110 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1689 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1111 return; /* all is well */ 1690 return; /* all is well */
1112 1691
1113 ev_rt_now = ev_time (); 1692 ev_rt_now = ev_time ();
1114 mn_now = get_clock (); 1693 mn_now = get_clock ();
1115 now_floor = mn_now; 1694 now_floor = mn_now;
1116 } 1695 }
1117 1696
1118# if EV_PERIODICS 1697# if EV_PERIODIC_ENABLE
1698 periodics_reschedule (EV_A);
1699# endif
1700 /* no timer adjustment, as the monotonic clock doesn't jump */
1701 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702 }
1703 else
1704#endif
1705 {
1706 ev_rt_now = ev_time ();
1707
1708 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709 {
1710#if EV_PERIODIC_ENABLE
1119 periodics_reschedule (EV_A); 1711 periodics_reschedule (EV_A);
1120# endif 1712#endif
1121 /* no timer adjustment, as the monotonic clock doesn't jump */ 1713 /* adjust timers. this is easy, as the offset is the same for all of them */
1122 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1714 for (i = 1; i <= timercnt; ++i)
1715 ev_at (timers [i]) += ev_rt_now - mn_now;
1123 } 1716 }
1124 }
1125 else
1126#endif
1127 {
1128 ev_rt_now = ev_time ();
1129
1130 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1131 {
1132#if EV_PERIODICS
1133 periodics_reschedule (EV_A);
1134#endif
1135
1136 /* adjust timers. this is easy, as the offset is the same for all */
1137 for (i = 0; i < timercnt; ++i)
1138 ((WT)timers [i])->at += ev_rt_now - mn_now;
1139 }
1140 1717
1141 mn_now = ev_rt_now; 1718 mn_now = ev_rt_now;
1142 } 1719 }
1143} 1720}
1144 1721
… …
1157static int loop_done; 1734static int loop_done;
1158 1735
1159void 1736void
1160ev_loop (EV_P_ int flags) 1737ev_loop (EV_P_ int flags)
1161{ 1738{
1162 double block; 1739 loop_done = EVUNLOOP_CANCEL;
1163 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1740
1741 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1164 1742
1165 do 1743 do
1166 { 1744 {
1745#ifndef _WIN32
1746 if (expect_false (curpid)) /* penalise the forking check even more */
1747 if (expect_false (getpid () != curpid))
1748 {
1749 curpid = getpid ();
1750 postfork = 1;
1751 }
1752#endif
1753
1754#if EV_FORK_ENABLE
1755 /* we might have forked, so queue fork handlers */
1756 if (expect_false (postfork))
1757 if (forkcnt)
1758 {
1759 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1760 call_pending (EV_A);
1761 }
1762#endif
1763
1167 /* queue check watchers (and execute them) */ 1764 /* queue prepare watchers (and execute them) */
1168 if (expect_false (preparecnt)) 1765 if (expect_false (preparecnt))
1169 { 1766 {
1170 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1767 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1171 call_pending (EV_A); 1768 call_pending (EV_A);
1172 } 1769 }
1173 1770
1771 if (expect_false (!activecnt))
1772 break;
1773
1174 /* we might have forked, so reify kernel state if necessary */ 1774 /* we might have forked, so reify kernel state if necessary */
1175 if (expect_false (postfork)) 1775 if (expect_false (postfork))
1176 loop_fork (EV_A); 1776 loop_fork (EV_A);
1177 1777
1178 /* update fd-related kernel structures */ 1778 /* update fd-related kernel structures */
1179 fd_reify (EV_A); 1779 fd_reify (EV_A);
1180 1780
1181 /* calculate blocking time */ 1781 /* calculate blocking time */
1782 {
1783 ev_tstamp waittime = 0.;
1784 ev_tstamp sleeptime = 0.;
1182 1785
1183 /* we only need this for !monotonic clock or timers, but as we basically 1786 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1184 always have timers, we just calculate it always */
1185#if EV_USE_MONOTONIC
1186 if (expect_true (have_monotonic))
1187 time_update_monotonic (EV_A);
1188 else
1189#endif
1190 { 1787 {
1191 ev_rt_now = ev_time (); 1788 /* update time to cancel out callback processing overhead */
1192 mn_now = ev_rt_now; 1789 time_update (EV_A_ 1e100);
1193 }
1194 1790
1195 if (flags & EVLOOP_NONBLOCK || idlecnt)
1196 block = 0.;
1197 else
1198 {
1199 block = MAX_BLOCKTIME; 1791 waittime = MAX_BLOCKTIME;
1200 1792
1201 if (timercnt) 1793 if (timercnt)
1202 { 1794 {
1203 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1795 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1204 if (block > to) block = to; 1796 if (waittime > to) waittime = to;
1205 } 1797 }
1206 1798
1207#if EV_PERIODICS 1799#if EV_PERIODIC_ENABLE
1208 if (periodiccnt) 1800 if (periodiccnt)
1209 { 1801 {
1210 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1802 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1211 if (block > to) block = to; 1803 if (waittime > to) waittime = to;
1212 } 1804 }
1213#endif 1805#endif
1214 1806
1215 if (block < 0.) block = 0.; 1807 if (expect_false (waittime < timeout_blocktime))
1808 waittime = timeout_blocktime;
1809
1810 sleeptime = waittime - backend_fudge;
1811
1812 if (expect_true (sleeptime > io_blocktime))
1813 sleeptime = io_blocktime;
1814
1815 if (sleeptime)
1816 {
1817 ev_sleep (sleeptime);
1818 waittime -= sleeptime;
1819 }
1216 } 1820 }
1217 1821
1218 method_poll (EV_A_ block); 1822 ++loop_count;
1823 backend_poll (EV_A_ waittime);
1219 1824
1220 /* update ev_rt_now, do magic */ 1825 /* update ev_rt_now, do magic */
1221 time_update (EV_A); 1826 time_update (EV_A_ waittime + sleeptime);
1827 }
1222 1828
1223 /* queue pending timers and reschedule them */ 1829 /* queue pending timers and reschedule them */
1224 timers_reify (EV_A); /* relative timers called last */ 1830 timers_reify (EV_A); /* relative timers called last */
1225#if EV_PERIODICS 1831#if EV_PERIODIC_ENABLE
1226 periodics_reify (EV_A); /* absolute timers called first */ 1832 periodics_reify (EV_A); /* absolute timers called first */
1227#endif 1833#endif
1228 1834
1835#if EV_IDLE_ENABLE
1229 /* queue idle watchers unless io or timers are pending */ 1836 /* queue idle watchers unless other events are pending */
1230 if (idlecnt && !any_pending (EV_A)) 1837 idle_reify (EV_A);
1231 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1838#endif
1232 1839
1233 /* queue check watchers, to be executed first */ 1840 /* queue check watchers, to be executed first */
1234 if (checkcnt) 1841 if (expect_false (checkcnt))
1235 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1842 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1236 1843
1237 call_pending (EV_A); 1844 call_pending (EV_A);
1238 } 1845 }
1239 while (activecnt && !loop_done); 1846 while (expect_true (
1847 activecnt
1848 && !loop_done
1849 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1850 ));
1240 1851
1241 if (loop_done != 2) 1852 if (loop_done == EVUNLOOP_ONE)
1242 loop_done = 0; 1853 loop_done = EVUNLOOP_CANCEL;
1243} 1854}
1244 1855
1245void 1856void
1246ev_unloop (EV_P_ int how) 1857ev_unloop (EV_P_ int how)
1247{ 1858{
1248 loop_done = how; 1859 loop_done = how;
1249} 1860}
1250 1861
1251/*****************************************************************************/ 1862/*****************************************************************************/
1252 1863
1253inline void 1864void inline_size
1254wlist_add (WL *head, WL elem) 1865wlist_add (WL *head, WL elem)
1255{ 1866{
1256 elem->next = *head; 1867 elem->next = *head;
1257 *head = elem; 1868 *head = elem;
1258} 1869}
1259 1870
1260inline void 1871void inline_size
1261wlist_del (WL *head, WL elem) 1872wlist_del (WL *head, WL elem)
1262{ 1873{
1263 while (*head) 1874 while (*head)
1264 { 1875 {
1265 if (*head == elem) 1876 if (*head == elem)
… …
1270 1881
1271 head = &(*head)->next; 1882 head = &(*head)->next;
1272 } 1883 }
1273} 1884}
1274 1885
1275inline void 1886void inline_speed
1276ev_clear_pending (EV_P_ W w) 1887clear_pending (EV_P_ W w)
1277{ 1888{
1278 if (w->pending) 1889 if (w->pending)
1279 { 1890 {
1280 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1891 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1281 w->pending = 0; 1892 w->pending = 0;
1282 } 1893 }
1283} 1894}
1284 1895
1285inline void 1896int
1897ev_clear_pending (EV_P_ void *w)
1898{
1899 W w_ = (W)w;
1900 int pending = w_->pending;
1901
1902 if (expect_true (pending))
1903 {
1904 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1905 w_->pending = 0;
1906 p->w = 0;
1907 return p->events;
1908 }
1909 else
1910 return 0;
1911}
1912
1913void inline_size
1914pri_adjust (EV_P_ W w)
1915{
1916 int pri = w->priority;
1917 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919 w->priority = pri;
1920}
1921
1922void inline_speed
1286ev_start (EV_P_ W w, int active) 1923ev_start (EV_P_ W w, int active)
1287{ 1924{
1288 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1925 pri_adjust (EV_A_ w);
1289 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1290
1291 w->active = active; 1926 w->active = active;
1292 ev_ref (EV_A); 1927 ev_ref (EV_A);
1293} 1928}
1294 1929
1295inline void 1930void inline_size
1296ev_stop (EV_P_ W w) 1931ev_stop (EV_P_ W w)
1297{ 1932{
1298 ev_unref (EV_A); 1933 ev_unref (EV_A);
1299 w->active = 0; 1934 w->active = 0;
1300} 1935}
1301 1936
1302/*****************************************************************************/ 1937/*****************************************************************************/
1303 1938
1304void 1939void noinline
1305ev_io_start (EV_P_ struct ev_io *w) 1940ev_io_start (EV_P_ ev_io *w)
1306{ 1941{
1307 int fd = w->fd; 1942 int fd = w->fd;
1308 1943
1309 if (ev_is_active (w)) 1944 if (expect_false (ev_is_active (w)))
1310 return; 1945 return;
1311 1946
1312 assert (("ev_io_start called with negative fd", fd >= 0)); 1947 assert (("ev_io_start called with negative fd", fd >= 0));
1313 1948
1314 ev_start (EV_A_ (W)w, 1); 1949 ev_start (EV_A_ (W)w, 1);
1315 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1950 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1316 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1951 wlist_add (&anfds[fd].head, (WL)w);
1317 1952
1318 fd_change (EV_A_ fd); 1953 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1954 w->events &= ~EV_IOFDSET;
1319} 1955}
1320 1956
1321void 1957void noinline
1322ev_io_stop (EV_P_ struct ev_io *w) 1958ev_io_stop (EV_P_ ev_io *w)
1323{ 1959{
1324 ev_clear_pending (EV_A_ (W)w); 1960 clear_pending (EV_A_ (W)w);
1325 if (!ev_is_active (w)) 1961 if (expect_false (!ev_is_active (w)))
1326 return; 1962 return;
1327 1963
1328 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1964 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1329 1965
1330 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1966 wlist_del (&anfds[w->fd].head, (WL)w);
1331 ev_stop (EV_A_ (W)w); 1967 ev_stop (EV_A_ (W)w);
1332 1968
1333 fd_change (EV_A_ w->fd); 1969 fd_change (EV_A_ w->fd, 1);
1334} 1970}
1335 1971
1336void 1972void noinline
1337ev_timer_start (EV_P_ struct ev_timer *w) 1973ev_timer_start (EV_P_ ev_timer *w)
1338{ 1974{
1339 if (ev_is_active (w)) 1975 if (expect_false (ev_is_active (w)))
1340 return; 1976 return;
1341 1977
1342 ((WT)w)->at += mn_now; 1978 ev_at (w) += mn_now;
1343 1979
1344 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1980 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1345 1981
1346 ev_start (EV_A_ (W)w, ++timercnt); 1982 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1347 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1983 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1348 timers [timercnt - 1] = w; 1984 timers [ev_active (w)] = (WT)w;
1349 upheap ((WT *)timers, timercnt - 1); 1985 upheap (timers, ev_active (w));
1350 1986
1351 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1987 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1352} 1988}
1353 1989
1354void 1990void noinline
1355ev_timer_stop (EV_P_ struct ev_timer *w) 1991ev_timer_stop (EV_P_ ev_timer *w)
1356{ 1992{
1357 ev_clear_pending (EV_A_ (W)w); 1993 clear_pending (EV_A_ (W)w);
1358 if (!ev_is_active (w)) 1994 if (expect_false (!ev_is_active (w)))
1359 return; 1995 return;
1360 1996
1997 {
1998 int active = ev_active (w);
1999
1361 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2000 assert (("internal timer heap corruption", timers [active] == (WT)w));
1362 2001
1363 if (((W)w)->active < timercnt--) 2002 if (expect_true (active < timercnt + HEAP0 - 1))
1364 { 2003 {
1365 timers [((W)w)->active - 1] = timers [timercnt]; 2004 timers [active] = timers [timercnt + HEAP0 - 1];
1366 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2005 adjustheap (timers, timercnt, active);
1367 } 2006 }
1368 2007
1369 ((WT)w)->at -= mn_now; 2008 --timercnt;
2009 }
2010
2011 ev_at (w) -= mn_now;
1370 2012
1371 ev_stop (EV_A_ (W)w); 2013 ev_stop (EV_A_ (W)w);
1372} 2014}
1373 2015
1374void 2016void noinline
1375ev_timer_again (EV_P_ struct ev_timer *w) 2017ev_timer_again (EV_P_ ev_timer *w)
1376{ 2018{
1377 if (ev_is_active (w)) 2019 if (ev_is_active (w))
1378 { 2020 {
1379 if (w->repeat) 2021 if (w->repeat)
1380 { 2022 {
1381 ((WT)w)->at = mn_now + w->repeat; 2023 ev_at (w) = mn_now + w->repeat;
1382 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2024 adjustheap (timers, timercnt, ev_active (w));
1383 } 2025 }
1384 else 2026 else
1385 ev_timer_stop (EV_A_ w); 2027 ev_timer_stop (EV_A_ w);
1386 } 2028 }
1387 else if (w->repeat) 2029 else if (w->repeat)
2030 {
2031 ev_at (w) = w->repeat;
1388 ev_timer_start (EV_A_ w); 2032 ev_timer_start (EV_A_ w);
2033 }
1389} 2034}
1390 2035
1391#if EV_PERIODICS 2036#if EV_PERIODIC_ENABLE
1392void 2037void noinline
1393ev_periodic_start (EV_P_ struct ev_periodic *w) 2038ev_periodic_start (EV_P_ ev_periodic *w)
1394{ 2039{
1395 if (ev_is_active (w)) 2040 if (expect_false (ev_is_active (w)))
1396 return; 2041 return;
1397 2042
1398 if (w->reschedule_cb) 2043 if (w->reschedule_cb)
1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2044 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1400 else if (w->interval) 2045 else if (w->interval)
1401 { 2046 {
1402 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2047 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1403 /* this formula differs from the one in periodic_reify because we do not always round up */ 2048 /* this formula differs from the one in periodic_reify because we do not always round up */
1404 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2049 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1405 } 2050 }
2051 else
2052 ev_at (w) = w->offset;
1406 2053
1407 ev_start (EV_A_ (W)w, ++periodiccnt); 2054 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1408 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2055 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1409 periodics [periodiccnt - 1] = w; 2056 periodics [ev_active (w)] = (WT)w;
1410 upheap ((WT *)periodics, periodiccnt - 1); 2057 upheap (periodics, ev_active (w));
1411 2058
1412 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2059 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1413} 2060}
1414 2061
1415void 2062void noinline
1416ev_periodic_stop (EV_P_ struct ev_periodic *w) 2063ev_periodic_stop (EV_P_ ev_periodic *w)
1417{ 2064{
1418 ev_clear_pending (EV_A_ (W)w); 2065 clear_pending (EV_A_ (W)w);
1419 if (!ev_is_active (w)) 2066 if (expect_false (!ev_is_active (w)))
1420 return; 2067 return;
1421 2068
2069 {
2070 int active = ev_active (w);
2071
1422 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2072 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1423 2073
1424 if (((W)w)->active < periodiccnt--) 2074 if (expect_true (active < periodiccnt + HEAP0 - 1))
1425 { 2075 {
1426 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2076 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1427 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2077 adjustheap (periodics, periodiccnt, active);
1428 } 2078 }
2079
2080 --periodiccnt;
2081 }
1429 2082
1430 ev_stop (EV_A_ (W)w); 2083 ev_stop (EV_A_ (W)w);
1431} 2084}
1432 2085
1433void 2086void noinline
1434ev_periodic_again (EV_P_ struct ev_periodic *w) 2087ev_periodic_again (EV_P_ ev_periodic *w)
1435{ 2088{
1436 /* TODO: use adjustheap and recalculation */ 2089 /* TODO: use adjustheap and recalculation */
1437 ev_periodic_stop (EV_A_ w); 2090 ev_periodic_stop (EV_A_ w);
1438 ev_periodic_start (EV_A_ w); 2091 ev_periodic_start (EV_A_ w);
1439} 2092}
1440#endif 2093#endif
1441 2094
1442void
1443ev_idle_start (EV_P_ struct ev_idle *w)
1444{
1445 if (ev_is_active (w))
1446 return;
1447
1448 ev_start (EV_A_ (W)w, ++idlecnt);
1449 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1450 idles [idlecnt - 1] = w;
1451}
1452
1453void
1454ev_idle_stop (EV_P_ struct ev_idle *w)
1455{
1456 ev_clear_pending (EV_A_ (W)w);
1457 if (!ev_is_active (w))
1458 return;
1459
1460 idles [((W)w)->active - 1] = idles [--idlecnt];
1461 ev_stop (EV_A_ (W)w);
1462}
1463
1464void
1465ev_prepare_start (EV_P_ struct ev_prepare *w)
1466{
1467 if (ev_is_active (w))
1468 return;
1469
1470 ev_start (EV_A_ (W)w, ++preparecnt);
1471 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1472 prepares [preparecnt - 1] = w;
1473}
1474
1475void
1476ev_prepare_stop (EV_P_ struct ev_prepare *w)
1477{
1478 ev_clear_pending (EV_A_ (W)w);
1479 if (!ev_is_active (w))
1480 return;
1481
1482 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1483 ev_stop (EV_A_ (W)w);
1484}
1485
1486void
1487ev_check_start (EV_P_ struct ev_check *w)
1488{
1489 if (ev_is_active (w))
1490 return;
1491
1492 ev_start (EV_A_ (W)w, ++checkcnt);
1493 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1494 checks [checkcnt - 1] = w;
1495}
1496
1497void
1498ev_check_stop (EV_P_ struct ev_check *w)
1499{
1500 ev_clear_pending (EV_A_ (W)w);
1501 if (!ev_is_active (w))
1502 return;
1503
1504 checks [((W)w)->active - 1] = checks [--checkcnt];
1505 ev_stop (EV_A_ (W)w);
1506}
1507
1508#ifndef SA_RESTART 2095#ifndef SA_RESTART
1509# define SA_RESTART 0 2096# define SA_RESTART 0
1510#endif 2097#endif
1511 2098
1512void 2099void noinline
1513ev_signal_start (EV_P_ struct ev_signal *w) 2100ev_signal_start (EV_P_ ev_signal *w)
1514{ 2101{
1515#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1516 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2103 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517#endif 2104#endif
1518 if (ev_is_active (w)) 2105 if (expect_false (ev_is_active (w)))
1519 return; 2106 return;
1520 2107
1521 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2108 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1522 2109
2110 evpipe_init (EV_A);
2111
2112 {
2113#ifndef _WIN32
2114 sigset_t full, prev;
2115 sigfillset (&full);
2116 sigprocmask (SIG_SETMASK, &full, &prev);
2117#endif
2118
2119 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2120
2121#ifndef _WIN32
2122 sigprocmask (SIG_SETMASK, &prev, 0);
2123#endif
2124 }
2125
1523 ev_start (EV_A_ (W)w, 1); 2126 ev_start (EV_A_ (W)w, 1);
1524 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1525 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2127 wlist_add (&signals [w->signum - 1].head, (WL)w);
1526 2128
1527 if (!((WL)w)->next) 2129 if (!((WL)w)->next)
1528 { 2130 {
1529#if _WIN32 2131#if _WIN32
1530 signal (w->signum, sighandler); 2132 signal (w->signum, ev_sighandler);
1531#else 2133#else
1532 struct sigaction sa; 2134 struct sigaction sa;
1533 sa.sa_handler = sighandler; 2135 sa.sa_handler = ev_sighandler;
1534 sigfillset (&sa.sa_mask); 2136 sigfillset (&sa.sa_mask);
1535 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2137 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1536 sigaction (w->signum, &sa, 0); 2138 sigaction (w->signum, &sa, 0);
1537#endif 2139#endif
1538 } 2140 }
1539} 2141}
1540 2142
1541void 2143void noinline
1542ev_signal_stop (EV_P_ struct ev_signal *w) 2144ev_signal_stop (EV_P_ ev_signal *w)
1543{ 2145{
1544 ev_clear_pending (EV_A_ (W)w); 2146 clear_pending (EV_A_ (W)w);
1545 if (!ev_is_active (w)) 2147 if (expect_false (!ev_is_active (w)))
1546 return; 2148 return;
1547 2149
1548 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2150 wlist_del (&signals [w->signum - 1].head, (WL)w);
1549 ev_stop (EV_A_ (W)w); 2151 ev_stop (EV_A_ (W)w);
1550 2152
1551 if (!signals [w->signum - 1].head) 2153 if (!signals [w->signum - 1].head)
1552 signal (w->signum, SIG_DFL); 2154 signal (w->signum, SIG_DFL);
1553} 2155}
1554 2156
1555void 2157void
1556ev_child_start (EV_P_ struct ev_child *w) 2158ev_child_start (EV_P_ ev_child *w)
1557{ 2159{
1558#if EV_MULTIPLICITY 2160#if EV_MULTIPLICITY
1559 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2161 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1560#endif 2162#endif
1561 if (ev_is_active (w)) 2163 if (expect_false (ev_is_active (w)))
1562 return; 2164 return;
1563 2165
1564 ev_start (EV_A_ (W)w, 1); 2166 ev_start (EV_A_ (W)w, 1);
1565 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2167 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1566} 2168}
1567 2169
1568void 2170void
1569ev_child_stop (EV_P_ struct ev_child *w) 2171ev_child_stop (EV_P_ ev_child *w)
1570{ 2172{
1571 ev_clear_pending (EV_A_ (W)w); 2173 clear_pending (EV_A_ (W)w);
1572 if (!ev_is_active (w)) 2174 if (expect_false (!ev_is_active (w)))
1573 return; 2175 return;
1574 2176
1575 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2177 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1576 ev_stop (EV_A_ (W)w); 2178 ev_stop (EV_A_ (W)w);
1577} 2179}
1578 2180
2181#if EV_STAT_ENABLE
2182
2183# ifdef _WIN32
2184# undef lstat
2185# define lstat(a,b) _stati64 (a,b)
2186# endif
2187
2188#define DEF_STAT_INTERVAL 5.0074891
2189#define MIN_STAT_INTERVAL 0.1074891
2190
2191static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192
2193#if EV_USE_INOTIFY
2194# define EV_INOTIFY_BUFSIZE 8192
2195
2196static void noinline
2197infy_add (EV_P_ ev_stat *w)
2198{
2199 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);
2200
2201 if (w->wd < 0)
2202 {
2203 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2204
2205 /* monitor some parent directory for speedup hints */
2206 /* note that exceeding the hardcoded limit is not a correctness issue, */
2207 /* but an efficiency issue only */
2208 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209 {
2210 char path [4096];
2211 strcpy (path, w->path);
2212
2213 do
2214 {
2215 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217
2218 char *pend = strrchr (path, '/');
2219
2220 if (!pend)
2221 break; /* whoops, no '/', complain to your admin */
2222
2223 *pend = 0;
2224 w->wd = inotify_add_watch (fs_fd, path, mask);
2225 }
2226 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227 }
2228 }
2229 else
2230 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231
2232 if (w->wd >= 0)
2233 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2234}
2235
2236static void noinline
2237infy_del (EV_P_ ev_stat *w)
2238{
2239 int slot;
2240 int wd = w->wd;
2241
2242 if (wd < 0)
2243 return;
2244
2245 w->wd = -2;
2246 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2247 wlist_del (&fs_hash [slot].head, (WL)w);
2248
2249 /* remove this watcher, if others are watching it, they will rearm */
2250 inotify_rm_watch (fs_fd, wd);
2251}
2252
2253static void noinline
2254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255{
2256 if (slot < 0)
2257 /* overflow, need to check for all hahs slots */
2258 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259 infy_wd (EV_A_ slot, wd, ev);
2260 else
2261 {
2262 WL w_;
2263
2264 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2265 {
2266 ev_stat *w = (ev_stat *)w_;
2267 w_ = w_->next; /* lets us remove this watcher and all before it */
2268
2269 if (w->wd == wd || wd == -1)
2270 {
2271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272 {
2273 w->wd = -1;
2274 infy_add (EV_A_ w); /* re-add, no matter what */
2275 }
2276
2277 stat_timer_cb (EV_A_ &w->timer, 0);
2278 }
2279 }
2280 }
2281}
2282
2283static void
2284infy_cb (EV_P_ ev_io *w, int revents)
2285{
2286 char buf [EV_INOTIFY_BUFSIZE];
2287 struct inotify_event *ev = (struct inotify_event *)buf;
2288 int ofs;
2289 int len = read (fs_fd, buf, sizeof (buf));
2290
2291 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293}
2294
2295void inline_size
2296infy_init (EV_P)
2297{
2298 if (fs_fd != -2)
2299 return;
2300
2301 fs_fd = inotify_init ();
2302
2303 if (fs_fd >= 0)
2304 {
2305 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2306 ev_set_priority (&fs_w, EV_MAXPRI);
2307 ev_io_start (EV_A_ &fs_w);
2308 }
2309}
2310
2311void inline_size
2312infy_fork (EV_P)
2313{
2314 int slot;
2315
2316 if (fs_fd < 0)
2317 return;
2318
2319 close (fs_fd);
2320 fs_fd = inotify_init ();
2321
2322 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2323 {
2324 WL w_ = fs_hash [slot].head;
2325 fs_hash [slot].head = 0;
2326
2327 while (w_)
2328 {
2329 ev_stat *w = (ev_stat *)w_;
2330 w_ = w_->next; /* lets us add this watcher */
2331
2332 w->wd = -1;
2333
2334 if (fs_fd >= 0)
2335 infy_add (EV_A_ w); /* re-add, no matter what */
2336 else
2337 ev_timer_start (EV_A_ &w->timer);
2338 }
2339
2340 }
2341}
2342
2343#endif
2344
2345void
2346ev_stat_stat (EV_P_ ev_stat *w)
2347{
2348 if (lstat (w->path, &w->attr) < 0)
2349 w->attr.st_nlink = 0;
2350 else if (!w->attr.st_nlink)
2351 w->attr.st_nlink = 1;
2352}
2353
2354static void noinline
2355stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2356{
2357 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2358
2359 /* we copy this here each the time so that */
2360 /* prev has the old value when the callback gets invoked */
2361 w->prev = w->attr;
2362 ev_stat_stat (EV_A_ w);
2363
2364 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2365 if (
2366 w->prev.st_dev != w->attr.st_dev
2367 || w->prev.st_ino != w->attr.st_ino
2368 || w->prev.st_mode != w->attr.st_mode
2369 || w->prev.st_nlink != w->attr.st_nlink
2370 || w->prev.st_uid != w->attr.st_uid
2371 || w->prev.st_gid != w->attr.st_gid
2372 || w->prev.st_rdev != w->attr.st_rdev
2373 || w->prev.st_size != w->attr.st_size
2374 || w->prev.st_atime != w->attr.st_atime
2375 || w->prev.st_mtime != w->attr.st_mtime
2376 || w->prev.st_ctime != w->attr.st_ctime
2377 ) {
2378 #if EV_USE_INOTIFY
2379 infy_del (EV_A_ w);
2380 infy_add (EV_A_ w);
2381 ev_stat_stat (EV_A_ w); /* avoid race... */
2382 #endif
2383
2384 ev_feed_event (EV_A_ w, EV_STAT);
2385 }
2386}
2387
2388void
2389ev_stat_start (EV_P_ ev_stat *w)
2390{
2391 if (expect_false (ev_is_active (w)))
2392 return;
2393
2394 /* since we use memcmp, we need to clear any padding data etc. */
2395 memset (&w->prev, 0, sizeof (ev_statdata));
2396 memset (&w->attr, 0, sizeof (ev_statdata));
2397
2398 ev_stat_stat (EV_A_ w);
2399
2400 if (w->interval < MIN_STAT_INTERVAL)
2401 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402
2403 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2404 ev_set_priority (&w->timer, ev_priority (w));
2405
2406#if EV_USE_INOTIFY
2407 infy_init (EV_A);
2408
2409 if (fs_fd >= 0)
2410 infy_add (EV_A_ w);
2411 else
2412#endif
2413 ev_timer_start (EV_A_ &w->timer);
2414
2415 ev_start (EV_A_ (W)w, 1);
2416}
2417
2418void
2419ev_stat_stop (EV_P_ ev_stat *w)
2420{
2421 clear_pending (EV_A_ (W)w);
2422 if (expect_false (!ev_is_active (w)))
2423 return;
2424
2425#if EV_USE_INOTIFY
2426 infy_del (EV_A_ w);
2427#endif
2428 ev_timer_stop (EV_A_ &w->timer);
2429
2430 ev_stop (EV_A_ (W)w);
2431}
2432#endif
2433
2434#if EV_IDLE_ENABLE
2435void
2436ev_idle_start (EV_P_ ev_idle *w)
2437{
2438 if (expect_false (ev_is_active (w)))
2439 return;
2440
2441 pri_adjust (EV_A_ (W)w);
2442
2443 {
2444 int active = ++idlecnt [ABSPRI (w)];
2445
2446 ++idleall;
2447 ev_start (EV_A_ (W)w, active);
2448
2449 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450 idles [ABSPRI (w)][active - 1] = w;
2451 }
2452}
2453
2454void
2455ev_idle_stop (EV_P_ ev_idle *w)
2456{
2457 clear_pending (EV_A_ (W)w);
2458 if (expect_false (!ev_is_active (w)))
2459 return;
2460
2461 {
2462 int active = ev_active (w);
2463
2464 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466
2467 ev_stop (EV_A_ (W)w);
2468 --idleall;
2469 }
2470}
2471#endif
2472
2473void
2474ev_prepare_start (EV_P_ ev_prepare *w)
2475{
2476 if (expect_false (ev_is_active (w)))
2477 return;
2478
2479 ev_start (EV_A_ (W)w, ++preparecnt);
2480 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481 prepares [preparecnt - 1] = w;
2482}
2483
2484void
2485ev_prepare_stop (EV_P_ ev_prepare *w)
2486{
2487 clear_pending (EV_A_ (W)w);
2488 if (expect_false (!ev_is_active (w)))
2489 return;
2490
2491 {
2492 int active = ev_active (w);
2493
2494 prepares [active - 1] = prepares [--preparecnt];
2495 ev_active (prepares [active - 1]) = active;
2496 }
2497
2498 ev_stop (EV_A_ (W)w);
2499}
2500
2501void
2502ev_check_start (EV_P_ ev_check *w)
2503{
2504 if (expect_false (ev_is_active (w)))
2505 return;
2506
2507 ev_start (EV_A_ (W)w, ++checkcnt);
2508 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509 checks [checkcnt - 1] = w;
2510}
2511
2512void
2513ev_check_stop (EV_P_ ev_check *w)
2514{
2515 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w)))
2517 return;
2518
2519 {
2520 int active = ev_active (w);
2521
2522 checks [active - 1] = checks [--checkcnt];
2523 ev_active (checks [active - 1]) = active;
2524 }
2525
2526 ev_stop (EV_A_ (W)w);
2527}
2528
2529#if EV_EMBED_ENABLE
2530void noinline
2531ev_embed_sweep (EV_P_ ev_embed *w)
2532{
2533 ev_loop (w->other, EVLOOP_NONBLOCK);
2534}
2535
2536static void
2537embed_io_cb (EV_P_ ev_io *io, int revents)
2538{
2539 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2540
2541 if (ev_cb (w))
2542 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2543 else
2544 ev_loop (w->other, EVLOOP_NONBLOCK);
2545}
2546
2547static void
2548embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2549{
2550 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2551
2552 {
2553 struct ev_loop *loop = w->other;
2554
2555 while (fdchangecnt)
2556 {
2557 fd_reify (EV_A);
2558 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559 }
2560 }
2561}
2562
2563#if 0
2564static void
2565embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566{
2567 ev_idle_stop (EV_A_ idle);
2568}
2569#endif
2570
2571void
2572ev_embed_start (EV_P_ ev_embed *w)
2573{
2574 if (expect_false (ev_is_active (w)))
2575 return;
2576
2577 {
2578 struct ev_loop *loop = w->other;
2579 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581 }
2582
2583 ev_set_priority (&w->io, ev_priority (w));
2584 ev_io_start (EV_A_ &w->io);
2585
2586 ev_prepare_init (&w->prepare, embed_prepare_cb);
2587 ev_set_priority (&w->prepare, EV_MINPRI);
2588 ev_prepare_start (EV_A_ &w->prepare);
2589
2590 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591
2592 ev_start (EV_A_ (W)w, 1);
2593}
2594
2595void
2596ev_embed_stop (EV_P_ ev_embed *w)
2597{
2598 clear_pending (EV_A_ (W)w);
2599 if (expect_false (!ev_is_active (w)))
2600 return;
2601
2602 ev_io_stop (EV_A_ &w->io);
2603 ev_prepare_stop (EV_A_ &w->prepare);
2604
2605 ev_stop (EV_A_ (W)w);
2606}
2607#endif
2608
2609#if EV_FORK_ENABLE
2610void
2611ev_fork_start (EV_P_ ev_fork *w)
2612{
2613 if (expect_false (ev_is_active (w)))
2614 return;
2615
2616 ev_start (EV_A_ (W)w, ++forkcnt);
2617 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618 forks [forkcnt - 1] = w;
2619}
2620
2621void
2622ev_fork_stop (EV_P_ ev_fork *w)
2623{
2624 clear_pending (EV_A_ (W)w);
2625 if (expect_false (!ev_is_active (w)))
2626 return;
2627
2628 {
2629 int active = ev_active (w);
2630
2631 forks [active - 1] = forks [--forkcnt];
2632 ev_active (forks [active - 1]) = active;
2633 }
2634
2635 ev_stop (EV_A_ (W)w);
2636}
2637#endif
2638
2639#if EV_ASYNC_ENABLE
2640void
2641ev_async_start (EV_P_ ev_async *w)
2642{
2643 if (expect_false (ev_is_active (w)))
2644 return;
2645
2646 evpipe_init (EV_A);
2647
2648 ev_start (EV_A_ (W)w, ++asynccnt);
2649 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650 asyncs [asynccnt - 1] = w;
2651}
2652
2653void
2654ev_async_stop (EV_P_ ev_async *w)
2655{
2656 clear_pending (EV_A_ (W)w);
2657 if (expect_false (!ev_is_active (w)))
2658 return;
2659
2660 {
2661 int active = ev_active (w);
2662
2663 asyncs [active - 1] = asyncs [--asynccnt];
2664 ev_active (asyncs [active - 1]) = active;
2665 }
2666
2667 ev_stop (EV_A_ (W)w);
2668}
2669
2670void
2671ev_async_send (EV_P_ ev_async *w)
2672{
2673 w->sent = 1;
2674 evpipe_write (EV_A_ &gotasync);
2675}
2676#endif
2677
1579/*****************************************************************************/ 2678/*****************************************************************************/
1580 2679
1581struct ev_once 2680struct ev_once
1582{ 2681{
1583 struct ev_io io; 2682 ev_io io;
1584 struct ev_timer to; 2683 ev_timer to;
1585 void (*cb)(int revents, void *arg); 2684 void (*cb)(int revents, void *arg);
1586 void *arg; 2685 void *arg;
1587}; 2686};
1588 2687
1589static void 2688static void
… …
1598 2697
1599 cb (revents, arg); 2698 cb (revents, arg);
1600} 2699}
1601 2700
1602static void 2701static void
1603once_cb_io (EV_P_ struct ev_io *w, int revents) 2702once_cb_io (EV_P_ ev_io *w, int revents)
1604{ 2703{
1605 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2704 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1606} 2705}
1607 2706
1608static void 2707static void
1609once_cb_to (EV_P_ struct ev_timer *w, int revents) 2708once_cb_to (EV_P_ ev_timer *w, int revents)
1610{ 2709{
1611 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2710 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1612} 2711}
1613 2712
1614void 2713void
1615ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2714ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1616{ 2715{
1617 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2716 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1618 2717
1619 if (!once) 2718 if (expect_false (!once))
2719 {
1620 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2720 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1621 else 2721 return;
1622 { 2722 }
2723
1623 once->cb = cb; 2724 once->cb = cb;
1624 once->arg = arg; 2725 once->arg = arg;
1625 2726
1626 ev_init (&once->io, once_cb_io); 2727 ev_init (&once->io, once_cb_io);
1627 if (fd >= 0) 2728 if (fd >= 0)
1628 { 2729 {
1629 ev_io_set (&once->io, fd, events); 2730 ev_io_set (&once->io, fd, events);
1630 ev_io_start (EV_A_ &once->io); 2731 ev_io_start (EV_A_ &once->io);
1631 } 2732 }
1632 2733
1633 ev_init (&once->to, once_cb_to); 2734 ev_init (&once->to, once_cb_to);
1634 if (timeout >= 0.) 2735 if (timeout >= 0.)
1635 { 2736 {
1636 ev_timer_set (&once->to, timeout, 0.); 2737 ev_timer_set (&once->to, timeout, 0.);
1637 ev_timer_start (EV_A_ &once->to); 2738 ev_timer_start (EV_A_ &once->to);
1638 }
1639 } 2739 }
1640} 2740}
2741
2742#if EV_MULTIPLICITY
2743 #include "ev_wrap.h"
2744#endif
1641 2745
1642#ifdef __cplusplus 2746#ifdef __cplusplus
1643} 2747}
1644#endif 2748#endif
1645 2749

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines