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Comparing libev/ev.c (file contents):
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC vs.
Revision 1.235 by root, Wed May 7 14:45:17 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) && !defined (__APPLE__) 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) && !defined (__APPLE__) 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
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
124 241
125#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
126# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
127# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
128#endif 245#endif
… …
130#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
131# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
132# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
133#endif 250#endif
134 251
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
135#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
136# include <winsock.h> 268# include <winsock.h>
137#endif 269#endif
138 270
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
139/**/ 283/**/
140 284
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
141#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) */
142#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) */
143#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
144/*#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 */
145 298
146#ifdef EV_H
147# include EV_H
148#else
149# include "ev.h"
150#endif
151
152#if __GNUC__ >= 3 299#if __GNUC__ >= 4
153# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
154# define inline inline 301# define noinline __attribute__ ((noinline))
155#else 302#else
156# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
157# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
158#endif 308#endif
159 309
160#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
161#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
162 319
163#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
164#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
165 322
166#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 */
167 325
168typedef struct ev_watcher *W; 326typedef ev_watcher *W;
169typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
170typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
171 329
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 */
172static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
173 338
174#ifdef _WIN32 339#ifdef _WIN32
175# include "ev_win32.c" 340# include "ev_win32.c"
176#endif 341#endif
177 342
178/*****************************************************************************/ 343/*****************************************************************************/
179 344
180static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
181 346
347void
182void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
183{ 349{
184 syserr_cb = cb; 350 syserr_cb = cb;
185} 351}
186 352
187static void 353static void noinline
188syserr (const char *msg) 354syserr (const char *msg)
189{ 355{
190 if (!msg) 356 if (!msg)
191 msg = "(libev) system error"; 357 msg = "(libev) system error";
192 358
… …
197 perror (msg); 363 perror (msg);
198 abort (); 364 abort ();
199 } 365 }
200} 366}
201 367
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
202static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
203 384
385void
204void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
205{ 387{
206 alloc = cb; 388 alloc = cb;
207} 389}
208 390
209static void * 391inline_speed void *
210ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
211{ 393{
212 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
213 395
214 if (!ptr && size) 396 if (!ptr && size)
215 { 397 {
216 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
217 abort (); 399 abort ();
… …
238typedef struct 420typedef struct
239{ 421{
240 W w; 422 W w;
241 int events; 423 int events;
242} ANPENDING; 424} ANPENDING;
425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
243 432
244#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
245 434
246 struct ev_loop 435 struct ev_loop
247 { 436 {
… …
251 #include "ev_vars.h" 440 #include "ev_vars.h"
252 #undef VAR 441 #undef VAR
253 }; 442 };
254 #include "ev_wrap.h" 443 #include "ev_wrap.h"
255 444
256 struct ev_loop default_loop_struct; 445 static struct ev_loop default_loop_struct;
257 static struct ev_loop *default_loop; 446 struct ev_loop *ev_default_loop_ptr;
258 447
259#else 448#else
260 449
261 ev_tstamp ev_rt_now; 450 ev_tstamp ev_rt_now;
262 #define VAR(name,decl) static decl; 451 #define VAR(name,decl) static decl;
263 #include "ev_vars.h" 452 #include "ev_vars.h"
264 #undef VAR 453 #undef VAR
265 454
266 static int default_loop; 455 static int ev_default_loop_ptr;
267 456
268#endif 457#endif
269 458
270/*****************************************************************************/ 459/*****************************************************************************/
271 460
… …
281 gettimeofday (&tv, 0); 470 gettimeofday (&tv, 0);
282 return tv.tv_sec + tv.tv_usec * 1e-6; 471 return tv.tv_sec + tv.tv_usec * 1e-6;
283#endif 472#endif
284} 473}
285 474
286inline ev_tstamp 475ev_tstamp inline_size
287get_clock (void) 476get_clock (void)
288{ 477{
289#if EV_USE_MONOTONIC 478#if EV_USE_MONOTONIC
290 if (expect_true (have_monotonic)) 479 if (expect_true (have_monotonic))
291 { 480 {
… …
304{ 493{
305 return ev_rt_now; 494 return ev_rt_now;
306} 495}
307#endif 496#endif
308 497
309#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}
310 554
311#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
312 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
313 { \ 557 { \
314 int newcnt = cur; \ 558 int ocur_ = (cur); \
315 do \ 559 (base) = (type *)array_realloc \
316 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
317 newcnt = array_roundsize (type, newcnt << 1); \ 561 init ((base) + (ocur_), (cur) - ocur_); \
318 } \
319 while ((cnt) > newcnt); \
320 \
321 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
322 init (base + cur, newcnt - cur); \
323 cur = newcnt; \
324 } 562 }
325 563
564#if 0
326#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
327 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
328 { \ 567 { \
329 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
330 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
331 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
332 } 571 }
572#endif
333 573
334#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
335 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;
336 576
337/*****************************************************************************/ 577/*****************************************************************************/
338 578
339static 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
340anfds_init (ANFD *base, int count) 608anfds_init (ANFD *base, int count)
341{ 609{
342 while (count--) 610 while (count--)
343 { 611 {
344 base->head = 0; 612 base->head = 0;
… …
347 615
348 ++base; 616 ++base;
349 } 617 }
350} 618}
351 619
352void 620void inline_speed
353ev_feed_event (EV_P_ void *w, int revents)
354{
355 W w_ = (W)w;
356
357 if (w_->pending)
358 {
359 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
360 return;
361 }
362
363 w_->pending = ++pendingcnt [ABSPRI (w_)];
364 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
365 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
366 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
367}
368
369static void
370queue_events (EV_P_ W *events, int eventcnt, int type)
371{
372 int i;
373
374 for (i = 0; i < eventcnt; ++i)
375 ev_feed_event (EV_A_ events [i], type);
376}
377
378inline void
379fd_event (EV_P_ int fd, int revents) 621fd_event (EV_P_ int fd, int revents)
380{ 622{
381 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
382 struct ev_io *w; 624 ev_io *w;
383 625
384 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)
385 { 627 {
386 int ev = w->events & revents; 628 int ev = w->events & revents;
387 629
388 if (ev) 630 if (ev)
389 ev_feed_event (EV_A_ (W)w, ev); 631 ev_feed_event (EV_A_ (W)w, ev);
… …
391} 633}
392 634
393void 635void
394ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
395{ 637{
638 if (fd >= 0 && fd < anfdmax)
396 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
397} 640}
398 641
399/*****************************************************************************/ 642void inline_size
400
401static void
402fd_reify (EV_P) 643fd_reify (EV_P)
403{ 644{
404 int i; 645 int i;
405 646
406 for (i = 0; i < fdchangecnt; ++i) 647 for (i = 0; i < fdchangecnt; ++i)
407 { 648 {
408 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
409 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
410 struct ev_io *w; 651 ev_io *w;
411 652
412 int events = 0; 653 unsigned char events = 0;
413 654
414 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)
415 events |= w->events; 656 events |= (unsigned char)w->events;
416 657
417#if EV_SELECT_IS_WINSOCKET 658#if EV_SELECT_IS_WINSOCKET
418 if (events) 659 if (events)
419 { 660 {
420 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
421 anfd->handle = _get_osfhandle (fd); 665 anfd->handle = _get_osfhandle (fd);
666 #endif
422 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));
423 } 668 }
424#endif 669#endif
425 670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
426 anfd->reify = 0; 675 anfd->reify = 0;
427
428 method_modify (EV_A_ fd, anfd->events, events);
429 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 }
430 } 681 }
431 682
432 fdchangecnt = 0; 683 fdchangecnt = 0;
433} 684}
434 685
435static void 686void inline_size
436fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
437{ 688{
438 if (anfds [fd].reify) 689 unsigned char reify = anfds [fd].reify;
439 return;
440
441 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
442 691
692 if (expect_true (!reify))
693 {
443 ++fdchangecnt; 694 ++fdchangecnt;
444 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
445 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
446} 698}
447 699
448static void 700void inline_speed
449fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
450{ 702{
451 struct ev_io *w; 703 ev_io *w;
452 704
453 while ((w = (struct ev_io *)anfds [fd].head)) 705 while ((w = (ev_io *)anfds [fd].head))
454 { 706 {
455 ev_io_stop (EV_A_ w); 707 ev_io_stop (EV_A_ w);
456 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);
457 } 709 }
458} 710}
459 711
460static int 712int inline_size
461fd_valid (int fd) 713fd_valid (int fd)
462{ 714{
463#ifdef _WIN32 715#ifdef _WIN32
464 return _get_osfhandle (fd) != -1; 716 return _get_osfhandle (fd) != -1;
465#else 717#else
466 return fcntl (fd, F_GETFD) != -1; 718 return fcntl (fd, F_GETFD) != -1;
467#endif 719#endif
468} 720}
469 721
470/* called on EBADF to verify fds */ 722/* called on EBADF to verify fds */
471static void 723static void noinline
472fd_ebadf (EV_P) 724fd_ebadf (EV_P)
473{ 725{
474 int fd; 726 int fd;
475 727
476 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
… …
478 if (!fd_valid (fd) == -1 && errno == EBADF) 730 if (!fd_valid (fd) == -1 && errno == EBADF)
479 fd_kill (EV_A_ fd); 731 fd_kill (EV_A_ fd);
480} 732}
481 733
482/* 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 */
483static void 735static void noinline
484fd_enomem (EV_P) 736fd_enomem (EV_P)
485{ 737{
486 int fd; 738 int fd;
487 739
488 for (fd = anfdmax; fd--; ) 740 for (fd = anfdmax; fd--; )
… …
491 fd_kill (EV_A_ fd); 743 fd_kill (EV_A_ fd);
492 return; 744 return;
493 } 745 }
494} 746}
495 747
496/* 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 */
497static void 749static void noinline
498fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
499{ 751{
500 int fd; 752 int fd;
501 753
502 /* this should be highly optimised to not do anything but set a flag */
503 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
504 if (anfds [fd].events) 755 if (anfds [fd].events)
505 { 756 {
506 anfds [fd].events = 0; 757 anfds [fd].events = 0;
507 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
508 } 759 }
509} 760}
510 761
511/*****************************************************************************/ 762/*****************************************************************************/
512 763
513static void 764/*
765 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers.
769 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP
772
773#define HEAP0 3 /* index of first element in heap */
774
775/* towards the root */
776void inline_speed
514upheap (WT *heap, int k) 777upheap (WT *heap, int k)
515{ 778{
516 WT w = heap [k]; 779 WT w = heap [k];
517 780
518 while (k && heap [k >> 1]->at > w->at) 781 for (;;)
519 { 782 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
520 heap [k] = heap [k >> 1]; 788 heap [k] = heap [p];
521 ((W)heap [k])->active = k + 1; 789 ev_active (heap [k]) = k;
522 k >>= 1; 790 k = p;
523 } 791 }
524 792
525 heap [k] = w; 793 heap [k] = w;
526 ((W)heap [k])->active = k + 1; 794 ev_active (heap [k]) = k;
527
528} 795}
529 796
530static void 797/* away from the root */
798void inline_speed
531downheap (WT *heap, int N, int k) 799downheap (WT *heap, int N, int k)
532{ 800{
533 WT w = heap [k]; 801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
534 803
535 while (k < (N >> 1)) 804 for (;;)
536 { 805 {
537 int j = k << 1; 806 ev_tstamp minat;
807 WT *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0;
538 809
539 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 810 // find minimum child
811 if (expect_true (pos +3 < E))
540 ++j; 812 {
813 (minpos = pos + 0), (minat = (*minpos)->at);
814 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
815 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
816 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
817 }
818 else
819 {
820 if (pos >= E)
821 break;
541 822
823 (minpos = pos + 0), (minat = (*minpos)->at);
824 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
825 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
826 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
827 }
828
542 if (w->at <= heap [j]->at) 829 if (w->at <= minat)
543 break; 830 break;
544 831
545 heap [k] = heap [j]; 832 ev_active (*minpos) = k;
546 ((W)heap [k])->active = k + 1; 833 heap [k] = *minpos;
547 k = j; 834
835 k = minpos - heap;
548 } 836 }
549 837
550 heap [k] = w; 838 heap [k] = w;
839 ev_active (heap [k]) = k;
840}
841
842#else // 4HEAP
843
844#define HEAP0 1
845
846/* towards the root */
847void inline_speed
848upheap (WT *heap, int k)
849{
850 WT w = heap [k];
851
852 for (;;)
853 {
854 int p = k >> 1;
855
856 /* maybe we could use a dummy element at heap [0]? */
857 if (!p || heap [p]->at <= w->at)
858 break;
859
860 heap [k] = heap [p];
861 ev_active (heap [k]) = k;
862 k = p;
863 }
864
865 heap [k] = w;
866 ev_active (heap [k]) = k;
867}
868
869/* away from the root */
870void inline_speed
871downheap (WT *heap, int N, int k)
872{
873 WT w = heap [k];
874
875 for (;;)
876 {
877 int c = k << 1;
878
879 if (c > N)
880 break;
881
882 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
883 ? 1 : 0;
884
885 if (w->at <= heap [c]->at)
886 break;
887
888 heap [k] = heap [c];
551 ((W)heap [k])->active = k + 1; 889 ((W)heap [k])->active = k;
552} 890
891 k = c;
892 }
553 893
554inline void 894 heap [k] = w;
895 ev_active (heap [k]) = k;
896}
897#endif
898
899void inline_size
555adjustheap (WT *heap, int N, int k) 900adjustheap (WT *heap, int N, int k)
556{ 901{
557 upheap (heap, k); 902 upheap (heap, k);
558 downheap (heap, N, k); 903 downheap (heap, N, k);
559} 904}
… …
561/*****************************************************************************/ 906/*****************************************************************************/
562 907
563typedef struct 908typedef struct
564{ 909{
565 WL head; 910 WL head;
566 sig_atomic_t volatile gotsig; 911 EV_ATOMIC_T gotsig;
567} ANSIG; 912} ANSIG;
568 913
569static ANSIG *signals; 914static ANSIG *signals;
570static int signalmax; 915static int signalmax;
571 916
572static int sigpipe [2]; 917static EV_ATOMIC_T gotsig;
573static sig_atomic_t volatile gotsig;
574static struct ev_io sigev;
575 918
576static void 919void inline_size
577signals_init (ANSIG *base, int count) 920signals_init (ANSIG *base, int count)
578{ 921{
579 while (count--) 922 while (count--)
580 { 923 {
581 base->head = 0; 924 base->head = 0;
… …
583 926
584 ++base; 927 ++base;
585 } 928 }
586} 929}
587 930
588static void 931/*****************************************************************************/
589sighandler (int signum)
590{
591#if _WIN32
592 signal (signum, sighandler);
593#endif
594 932
595 signals [signum - 1].gotsig = 1; 933void inline_speed
596
597 if (!gotsig)
598 {
599 int old_errno = errno;
600 gotsig = 1;
601 write (sigpipe [1], &signum, 1);
602 errno = old_errno;
603 }
604}
605
606void
607ev_feed_signal_event (EV_P_ int signum)
608{
609 WL w;
610
611#if EV_MULTIPLICITY
612 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
613#endif
614
615 --signum;
616
617 if (signum < 0 || signum >= signalmax)
618 return;
619
620 signals [signum].gotsig = 0;
621
622 for (w = signals [signum].head; w; w = w->next)
623 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624}
625
626static void
627sigcb (EV_P_ struct ev_io *iow, int revents)
628{
629 int signum;
630
631 read (sigpipe [0], &revents, 1);
632 gotsig = 0;
633
634 for (signum = signalmax; signum--; )
635 if (signals [signum].gotsig)
636 ev_feed_signal_event (EV_A_ signum + 1);
637}
638
639inline void
640fd_intern (int fd) 934fd_intern (int fd)
641{ 935{
642#ifdef _WIN32 936#ifdef _WIN32
643 int arg = 1; 937 int arg = 1;
644 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 938 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
646 fcntl (fd, F_SETFD, FD_CLOEXEC); 940 fcntl (fd, F_SETFD, FD_CLOEXEC);
647 fcntl (fd, F_SETFL, O_NONBLOCK); 941 fcntl (fd, F_SETFL, O_NONBLOCK);
648#endif 942#endif
649} 943}
650 944
945static void noinline
946evpipe_init (EV_P)
947{
948 if (!ev_is_active (&pipeev))
949 {
950#if EV_USE_EVENTFD
951 if ((evfd = eventfd (0, 0)) >= 0)
952 {
953 evpipe [0] = -1;
954 fd_intern (evfd);
955 ev_io_set (&pipeev, evfd, EV_READ);
956 }
957 else
958#endif
959 {
960 while (pipe (evpipe))
961 syserr ("(libev) error creating signal/async pipe");
962
963 fd_intern (evpipe [0]);
964 fd_intern (evpipe [1]);
965 ev_io_set (&pipeev, evpipe [0], EV_READ);
966 }
967
968 ev_io_start (EV_A_ &pipeev);
969 ev_unref (EV_A); /* watcher should not keep loop alive */
970 }
971}
972
973void inline_size
974evpipe_write (EV_P_ EV_ATOMIC_T *flag)
975{
976 if (!*flag)
977 {
978 int old_errno = errno; /* save errno because write might clobber it */
979
980 *flag = 1;
981
982#if EV_USE_EVENTFD
983 if (evfd >= 0)
984 {
985 uint64_t counter = 1;
986 write (evfd, &counter, sizeof (uint64_t));
987 }
988 else
989#endif
990 write (evpipe [1], &old_errno, 1);
991
992 errno = old_errno;
993 }
994}
995
651static void 996static void
652siginit (EV_P) 997pipecb (EV_P_ ev_io *iow, int revents)
653{ 998{
654 fd_intern (sigpipe [0]); 999#if EV_USE_EVENTFD
655 fd_intern (sigpipe [1]); 1000 if (evfd >= 0)
1001 {
1002 uint64_t counter;
1003 read (evfd, &counter, sizeof (uint64_t));
1004 }
1005 else
1006#endif
1007 {
1008 char dummy;
1009 read (evpipe [0], &dummy, 1);
1010 }
656 1011
657 ev_io_set (&sigev, sigpipe [0], EV_READ); 1012 if (gotsig && ev_is_default_loop (EV_A))
658 ev_io_start (EV_A_ &sigev); 1013 {
659 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1014 int signum;
1015 gotsig = 0;
1016
1017 for (signum = signalmax; signum--; )
1018 if (signals [signum].gotsig)
1019 ev_feed_signal_event (EV_A_ signum + 1);
1020 }
1021
1022#if EV_ASYNC_ENABLE
1023 if (gotasync)
1024 {
1025 int i;
1026 gotasync = 0;
1027
1028 for (i = asynccnt; i--; )
1029 if (asyncs [i]->sent)
1030 {
1031 asyncs [i]->sent = 0;
1032 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1033 }
1034 }
1035#endif
660} 1036}
661 1037
662/*****************************************************************************/ 1038/*****************************************************************************/
663 1039
664static struct ev_child *childs [PID_HASHSIZE]; 1040static void
1041ev_sighandler (int signum)
1042{
1043#if EV_MULTIPLICITY
1044 struct ev_loop *loop = &default_loop_struct;
1045#endif
1046
1047#if _WIN32
1048 signal (signum, ev_sighandler);
1049#endif
1050
1051 signals [signum - 1].gotsig = 1;
1052 evpipe_write (EV_A_ &gotsig);
1053}
1054
1055void noinline
1056ev_feed_signal_event (EV_P_ int signum)
1057{
1058 WL w;
1059
1060#if EV_MULTIPLICITY
1061 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1062#endif
1063
1064 --signum;
1065
1066 if (signum < 0 || signum >= signalmax)
1067 return;
1068
1069 signals [signum].gotsig = 0;
1070
1071 for (w = signals [signum].head; w; w = w->next)
1072 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1073}
1074
1075/*****************************************************************************/
1076
1077static WL childs [EV_PID_HASHSIZE];
665 1078
666#ifndef _WIN32 1079#ifndef _WIN32
667 1080
668static struct ev_signal childev; 1081static ev_signal childev;
1082
1083#ifndef WIFCONTINUED
1084# define WIFCONTINUED(status) 0
1085#endif
1086
1087void inline_speed
1088child_reap (EV_P_ int chain, int pid, int status)
1089{
1090 ev_child *w;
1091 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1092
1093 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1094 {
1095 if ((w->pid == pid || !w->pid)
1096 && (!traced || (w->flags & 1)))
1097 {
1098 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1099 w->rpid = pid;
1100 w->rstatus = status;
1101 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1102 }
1103 }
1104}
669 1105
670#ifndef WCONTINUED 1106#ifndef WCONTINUED
671# define WCONTINUED 0 1107# define WCONTINUED 0
672#endif 1108#endif
673 1109
674static void 1110static void
675child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
676{
677 struct ev_child *w;
678
679 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
680 if (w->pid == pid || !w->pid)
681 {
682 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
683 w->rpid = pid;
684 w->rstatus = status;
685 ev_feed_event (EV_A_ (W)w, EV_CHILD);
686 }
687}
688
689static void
690childcb (EV_P_ struct ev_signal *sw, int revents) 1111childcb (EV_P_ ev_signal *sw, int revents)
691{ 1112{
692 int pid, status; 1113 int pid, status;
693 1114
1115 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
694 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1116 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
695 { 1117 if (!WCONTINUED
1118 || errno != EINVAL
1119 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1120 return;
1121
696 /* make sure we are called again until all childs have been reaped */ 1122 /* make sure we are called again until all children have been reaped */
1123 /* we need to do it this way so that the callback gets called before we continue */
697 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1124 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
698 1125
699 child_reap (EV_A_ sw, pid, pid, status); 1126 child_reap (EV_A_ pid, pid, status);
1127 if (EV_PID_HASHSIZE > 1)
700 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1128 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
701 }
702} 1129}
703 1130
704#endif 1131#endif
705 1132
706/*****************************************************************************/ 1133/*****************************************************************************/
707 1134
1135#if EV_USE_PORT
1136# include "ev_port.c"
1137#endif
708#if EV_USE_KQUEUE 1138#if EV_USE_KQUEUE
709# include "ev_kqueue.c" 1139# include "ev_kqueue.c"
710#endif 1140#endif
711#if EV_USE_EPOLL 1141#if EV_USE_EPOLL
712# include "ev_epoll.c" 1142# include "ev_epoll.c"
… …
729{ 1159{
730 return EV_VERSION_MINOR; 1160 return EV_VERSION_MINOR;
731} 1161}
732 1162
733/* return true if we are running with elevated privileges and should ignore env variables */ 1163/* return true if we are running with elevated privileges and should ignore env variables */
734static int 1164int inline_size
735enable_secure (void) 1165enable_secure (void)
736{ 1166{
737#ifdef _WIN32 1167#ifdef _WIN32
738 return 0; 1168 return 0;
739#else 1169#else
740 return getuid () != geteuid () 1170 return getuid () != geteuid ()
741 || getgid () != getegid (); 1171 || getgid () != getegid ();
742#endif 1172#endif
743} 1173}
744 1174
745int 1175unsigned int
746ev_method (EV_P) 1176ev_supported_backends (void)
747{ 1177{
748 return method; 1178 unsigned int flags = 0;
749}
750 1179
751static void 1180 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
752loop_init (EV_P_ int methods) 1181 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1182 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1183 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1184 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1185
1186 return flags;
1187}
1188
1189unsigned int
1190ev_recommended_backends (void)
753{ 1191{
754 if (!method) 1192 unsigned int flags = ev_supported_backends ();
1193
1194#ifndef __NetBSD__
1195 /* kqueue is borked on everything but netbsd apparently */
1196 /* it usually doesn't work correctly on anything but sockets and pipes */
1197 flags &= ~EVBACKEND_KQUEUE;
1198#endif
1199#ifdef __APPLE__
1200 // flags &= ~EVBACKEND_KQUEUE; for documentation
1201 flags &= ~EVBACKEND_POLL;
1202#endif
1203
1204 return flags;
1205}
1206
1207unsigned int
1208ev_embeddable_backends (void)
1209{
1210 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1211
1212 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1213 /* please fix it and tell me how to detect the fix */
1214 flags &= ~EVBACKEND_EPOLL;
1215
1216 return flags;
1217}
1218
1219unsigned int
1220ev_backend (EV_P)
1221{
1222 return backend;
1223}
1224
1225unsigned int
1226ev_loop_count (EV_P)
1227{
1228 return loop_count;
1229}
1230
1231void
1232ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1233{
1234 io_blocktime = interval;
1235}
1236
1237void
1238ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1239{
1240 timeout_blocktime = interval;
1241}
1242
1243static void noinline
1244loop_init (EV_P_ unsigned int flags)
1245{
1246 if (!backend)
755 { 1247 {
756#if EV_USE_MONOTONIC 1248#if EV_USE_MONOTONIC
757 { 1249 {
758 struct timespec ts; 1250 struct timespec ts;
759 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1251 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
760 have_monotonic = 1; 1252 have_monotonic = 1;
761 } 1253 }
762#endif 1254#endif
763 1255
764 ev_rt_now = ev_time (); 1256 ev_rt_now = ev_time ();
765 mn_now = get_clock (); 1257 mn_now = get_clock ();
766 now_floor = mn_now; 1258 now_floor = mn_now;
767 rtmn_diff = ev_rt_now - mn_now; 1259 rtmn_diff = ev_rt_now - mn_now;
768 1260
769 if (methods == EVMETHOD_AUTO) 1261 io_blocktime = 0.;
770 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1262 timeout_blocktime = 0.;
1263 backend = 0;
1264 backend_fd = -1;
1265 gotasync = 0;
1266#if EV_USE_INOTIFY
1267 fs_fd = -2;
1268#endif
1269
1270 /* pid check not overridable via env */
1271#ifndef _WIN32
1272 if (flags & EVFLAG_FORKCHECK)
1273 curpid = getpid ();
1274#endif
1275
1276 if (!(flags & EVFLAG_NOENV)
1277 && !enable_secure ()
1278 && getenv ("LIBEV_FLAGS"))
771 methods = atoi (getenv ("LIBEV_METHODS")); 1279 flags = atoi (getenv ("LIBEV_FLAGS"));
772 else
773 methods = EVMETHOD_ANY;
774 1280
775 method = 0; 1281 if (!(flags & 0x0000ffffU))
1282 flags |= ev_recommended_backends ();
1283
1284#if EV_USE_PORT
1285 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1286#endif
776#if EV_USE_KQUEUE 1287#if EV_USE_KQUEUE
777 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1288 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
778#endif 1289#endif
779#if EV_USE_EPOLL 1290#if EV_USE_EPOLL
780 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1291 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
781#endif 1292#endif
782#if EV_USE_POLL 1293#if EV_USE_POLL
783 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1294 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
784#endif 1295#endif
785#if EV_USE_SELECT 1296#if EV_USE_SELECT
786 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1297 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
787#endif 1298#endif
788 1299
789 ev_init (&sigev, sigcb); 1300 ev_init (&pipeev, pipecb);
790 ev_set_priority (&sigev, EV_MAXPRI); 1301 ev_set_priority (&pipeev, EV_MAXPRI);
791 } 1302 }
792} 1303}
793 1304
794void 1305static void noinline
795loop_destroy (EV_P) 1306loop_destroy (EV_P)
796{ 1307{
797 int i; 1308 int i;
798 1309
1310 if (ev_is_active (&pipeev))
1311 {
1312 ev_ref (EV_A); /* signal watcher */
1313 ev_io_stop (EV_A_ &pipeev);
1314
1315#if EV_USE_EVENTFD
1316 if (evfd >= 0)
1317 close (evfd);
1318#endif
1319
1320 if (evpipe [0] >= 0)
1321 {
1322 close (evpipe [0]);
1323 close (evpipe [1]);
1324 }
1325 }
1326
1327#if EV_USE_INOTIFY
1328 if (fs_fd >= 0)
1329 close (fs_fd);
1330#endif
1331
1332 if (backend_fd >= 0)
1333 close (backend_fd);
1334
1335#if EV_USE_PORT
1336 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1337#endif
799#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
800 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1339 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
801#endif 1340#endif
802#if EV_USE_EPOLL 1341#if EV_USE_EPOLL
803 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1342 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
804#endif 1343#endif
805#if EV_USE_POLL 1344#if EV_USE_POLL
806 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1345 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
807#endif 1346#endif
808#if EV_USE_SELECT 1347#if EV_USE_SELECT
809 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1348 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
810#endif 1349#endif
811 1350
812 for (i = NUMPRI; i--; ) 1351 for (i = NUMPRI; i--; )
1352 {
813 array_free (pending, [i]); 1353 array_free (pending, [i]);
1354#if EV_IDLE_ENABLE
1355 array_free (idle, [i]);
1356#endif
1357 }
1358
1359 ev_free (anfds); anfdmax = 0;
814 1360
815 /* have to use the microsoft-never-gets-it-right macro */ 1361 /* have to use the microsoft-never-gets-it-right macro */
816 array_free (fdchange, EMPTY); 1362 array_free (fdchange, EMPTY);
817 array_free (timer, EMPTY); 1363 array_free (timer, EMPTY);
818#if EV_PERIODICS 1364#if EV_PERIODIC_ENABLE
819 array_free (periodic, EMPTY); 1365 array_free (periodic, EMPTY);
820#endif 1366#endif
1367#if EV_FORK_ENABLE
821 array_free (idle, EMPTY); 1368 array_free (fork, EMPTY);
1369#endif
822 array_free (prepare, EMPTY); 1370 array_free (prepare, EMPTY);
823 array_free (check, EMPTY); 1371 array_free (check, EMPTY);
1372#if EV_ASYNC_ENABLE
1373 array_free (async, EMPTY);
1374#endif
824 1375
825 method = 0; 1376 backend = 0;
826} 1377}
827 1378
828static void 1379#if EV_USE_INOTIFY
1380void inline_size infy_fork (EV_P);
1381#endif
1382
1383void inline_size
829loop_fork (EV_P) 1384loop_fork (EV_P)
830{ 1385{
1386#if EV_USE_PORT
1387 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1388#endif
1389#if EV_USE_KQUEUE
1390 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1391#endif
831#if EV_USE_EPOLL 1392#if EV_USE_EPOLL
832 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1393 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
833#endif 1394#endif
834#if EV_USE_KQUEUE 1395#if EV_USE_INOTIFY
835 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1396 infy_fork (EV_A);
836#endif 1397#endif
837 1398
838 if (ev_is_active (&sigev)) 1399 if (ev_is_active (&pipeev))
839 { 1400 {
840 /* default loop */ 1401 /* this "locks" the handlers against writing to the pipe */
1402 /* while we modify the fd vars */
1403 gotsig = 1;
1404#if EV_ASYNC_ENABLE
1405 gotasync = 1;
1406#endif
841 1407
842 ev_ref (EV_A); 1408 ev_ref (EV_A);
843 ev_io_stop (EV_A_ &sigev); 1409 ev_io_stop (EV_A_ &pipeev);
1410
1411#if EV_USE_EVENTFD
1412 if (evfd >= 0)
1413 close (evfd);
1414#endif
1415
1416 if (evpipe [0] >= 0)
1417 {
844 close (sigpipe [0]); 1418 close (evpipe [0]);
845 close (sigpipe [1]); 1419 close (evpipe [1]);
1420 }
846 1421
847 while (pipe (sigpipe))
848 syserr ("(libev) error creating pipe");
849
850 siginit (EV_A); 1422 evpipe_init (EV_A);
1423 /* now iterate over everything, in case we missed something */
1424 pipecb (EV_A_ &pipeev, EV_READ);
851 } 1425 }
852 1426
853 postfork = 0; 1427 postfork = 0;
854} 1428}
855 1429
856#if EV_MULTIPLICITY 1430#if EV_MULTIPLICITY
857struct ev_loop * 1431struct ev_loop *
858ev_loop_new (int methods) 1432ev_loop_new (unsigned int flags)
859{ 1433{
860 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1434 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
861 1435
862 memset (loop, 0, sizeof (struct ev_loop)); 1436 memset (loop, 0, sizeof (struct ev_loop));
863 1437
864 loop_init (EV_A_ methods); 1438 loop_init (EV_A_ flags);
865 1439
866 if (ev_method (EV_A)) 1440 if (ev_backend (EV_A))
867 return loop; 1441 return loop;
868 1442
869 return 0; 1443 return 0;
870} 1444}
871 1445
… …
877} 1451}
878 1452
879void 1453void
880ev_loop_fork (EV_P) 1454ev_loop_fork (EV_P)
881{ 1455{
882 postfork = 1; 1456 postfork = 1; /* must be in line with ev_default_fork */
883} 1457}
884
885#endif 1458#endif
886 1459
887#if EV_MULTIPLICITY 1460#if EV_MULTIPLICITY
888struct ev_loop * 1461struct ev_loop *
1462ev_default_loop_init (unsigned int flags)
889#else 1463#else
890int 1464int
1465ev_default_loop (unsigned int flags)
891#endif 1466#endif
892ev_default_loop (int methods)
893{ 1467{
894 if (sigpipe [0] == sigpipe [1])
895 if (pipe (sigpipe))
896 return 0;
897
898 if (!default_loop) 1468 if (!ev_default_loop_ptr)
899 { 1469 {
900#if EV_MULTIPLICITY 1470#if EV_MULTIPLICITY
901 struct ev_loop *loop = default_loop = &default_loop_struct; 1471 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
902#else 1472#else
903 default_loop = 1; 1473 ev_default_loop_ptr = 1;
904#endif 1474#endif
905 1475
906 loop_init (EV_A_ methods); 1476 loop_init (EV_A_ flags);
907 1477
908 if (ev_method (EV_A)) 1478 if (ev_backend (EV_A))
909 { 1479 {
910 siginit (EV_A);
911
912#ifndef _WIN32 1480#ifndef _WIN32
913 ev_signal_init (&childev, childcb, SIGCHLD); 1481 ev_signal_init (&childev, childcb, SIGCHLD);
914 ev_set_priority (&childev, EV_MAXPRI); 1482 ev_set_priority (&childev, EV_MAXPRI);
915 ev_signal_start (EV_A_ &childev); 1483 ev_signal_start (EV_A_ &childev);
916 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1484 ev_unref (EV_A); /* child watcher should not keep loop alive */
917#endif 1485#endif
918 } 1486 }
919 else 1487 else
920 default_loop = 0; 1488 ev_default_loop_ptr = 0;
921 } 1489 }
922 1490
923 return default_loop; 1491 return ev_default_loop_ptr;
924} 1492}
925 1493
926void 1494void
927ev_default_destroy (void) 1495ev_default_destroy (void)
928{ 1496{
929#if EV_MULTIPLICITY 1497#if EV_MULTIPLICITY
930 struct ev_loop *loop = default_loop; 1498 struct ev_loop *loop = ev_default_loop_ptr;
931#endif 1499#endif
932 1500
933#ifndef _WIN32 1501#ifndef _WIN32
934 ev_ref (EV_A); /* child watcher */ 1502 ev_ref (EV_A); /* child watcher */
935 ev_signal_stop (EV_A_ &childev); 1503 ev_signal_stop (EV_A_ &childev);
936#endif 1504#endif
937 1505
938 ev_ref (EV_A); /* signal watcher */
939 ev_io_stop (EV_A_ &sigev);
940
941 close (sigpipe [0]); sigpipe [0] = 0;
942 close (sigpipe [1]); sigpipe [1] = 0;
943
944 loop_destroy (EV_A); 1506 loop_destroy (EV_A);
945} 1507}
946 1508
947void 1509void
948ev_default_fork (void) 1510ev_default_fork (void)
949{ 1511{
950#if EV_MULTIPLICITY 1512#if EV_MULTIPLICITY
951 struct ev_loop *loop = default_loop; 1513 struct ev_loop *loop = ev_default_loop_ptr;
952#endif 1514#endif
953 1515
954 if (method) 1516 if (backend)
955 postfork = 1; 1517 postfork = 1; /* must be in line with ev_loop_fork */
956} 1518}
957 1519
958/*****************************************************************************/ 1520/*****************************************************************************/
959 1521
960static int 1522void
961any_pending (EV_P) 1523ev_invoke (EV_P_ void *w, int revents)
962{ 1524{
963 int pri; 1525 EV_CB_INVOKE ((W)w, revents);
964
965 for (pri = NUMPRI; pri--; )
966 if (pendingcnt [pri])
967 return 1;
968
969 return 0;
970} 1526}
971 1527
972static void 1528void inline_speed
973call_pending (EV_P) 1529call_pending (EV_P)
974{ 1530{
975 int pri; 1531 int pri;
976 1532
977 for (pri = NUMPRI; pri--; ) 1533 for (pri = NUMPRI; pri--; )
978 while (pendingcnt [pri]) 1534 while (pendingcnt [pri])
979 { 1535 {
980 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1536 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
981 1537
982 if (p->w) 1538 if (expect_true (p->w))
983 { 1539 {
1540 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1541
984 p->w->pending = 0; 1542 p->w->pending = 0;
985 EV_CB_INVOKE (p->w, p->events); 1543 EV_CB_INVOKE (p->w, p->events);
986 } 1544 }
987 } 1545 }
988} 1546}
989 1547
990static void 1548#if EV_IDLE_ENABLE
1549void inline_size
1550idle_reify (EV_P)
1551{
1552 if (expect_false (idleall))
1553 {
1554 int pri;
1555
1556 for (pri = NUMPRI; pri--; )
1557 {
1558 if (pendingcnt [pri])
1559 break;
1560
1561 if (idlecnt [pri])
1562 {
1563 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1564 break;
1565 }
1566 }
1567 }
1568}
1569#endif
1570
1571void inline_size
991timers_reify (EV_P) 1572timers_reify (EV_P)
992{ 1573{
993 while (timercnt && ((WT)timers [0])->at <= mn_now) 1574 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
994 { 1575 {
995 struct ev_timer *w = timers [0]; 1576 ev_timer *w = (ev_timer *)timers [HEAP0];
996 1577
997 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1578 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
998 1579
999 /* first reschedule or stop timer */ 1580 /* first reschedule or stop timer */
1000 if (w->repeat) 1581 if (w->repeat)
1001 { 1582 {
1002 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1583 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1003 1584
1004 ((WT)w)->at += w->repeat; 1585 ev_at (w) += w->repeat;
1005 if (((WT)w)->at < mn_now) 1586 if (ev_at (w) < mn_now)
1006 ((WT)w)->at = mn_now; 1587 ev_at (w) = mn_now;
1007 1588
1008 downheap ((WT *)timers, timercnt, 0); 1589 downheap (timers, timercnt, HEAP0);
1009 } 1590 }
1010 else 1591 else
1011 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1592 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1012 1593
1013 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1594 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1014 } 1595 }
1015} 1596}
1016 1597
1017#if EV_PERIODICS 1598#if EV_PERIODIC_ENABLE
1018static void 1599void inline_size
1019periodics_reify (EV_P) 1600periodics_reify (EV_P)
1020{ 1601{
1021 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1602 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1022 { 1603 {
1023 struct ev_periodic *w = periodics [0]; 1604 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1024 1605
1025 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1606 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1026 1607
1027 /* first reschedule or stop timer */ 1608 /* first reschedule or stop timer */
1028 if (w->reschedule_cb) 1609 if (w->reschedule_cb)
1029 { 1610 {
1030 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1611 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1031
1032 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1612 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1033 downheap ((WT *)periodics, periodiccnt, 0); 1613 downheap (periodics, periodiccnt, 1);
1034 } 1614 }
1035 else if (w->interval) 1615 else if (w->interval)
1036 { 1616 {
1037 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1618 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1038 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1619 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1039 downheap ((WT *)periodics, periodiccnt, 0); 1620 downheap (periodics, periodiccnt, HEAP0);
1040 } 1621 }
1041 else 1622 else
1042 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1623 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1043 1624
1044 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1625 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1045 } 1626 }
1046} 1627}
1047 1628
1048static void 1629static void noinline
1049periodics_reschedule (EV_P) 1630periodics_reschedule (EV_P)
1050{ 1631{
1051 int i; 1632 int i;
1052 1633
1053 /* adjust periodics after time jump */ 1634 /* adjust periodics after time jump */
1054 for (i = 0; i < periodiccnt; ++i) 1635 for (i = 1; i <= periodiccnt; ++i)
1055 { 1636 {
1056 struct ev_periodic *w = periodics [i]; 1637 ev_periodic *w = (ev_periodic *)periodics [i];
1057 1638
1058 if (w->reschedule_cb) 1639 if (w->reschedule_cb)
1059 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1640 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1060 else if (w->interval) 1641 else if (w->interval)
1061 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1062 } 1643 }
1063 1644
1064 /* now rebuild the heap */ 1645 /* now rebuild the heap */
1065 for (i = periodiccnt >> 1; i--; ) 1646 for (i = periodiccnt >> 1; --i; )
1066 downheap ((WT *)periodics, periodiccnt, i); 1647 downheap (periodics, periodiccnt, i + HEAP0);
1067} 1648}
1068#endif 1649#endif
1069 1650
1070inline int 1651void inline_speed
1071time_update_monotonic (EV_P) 1652time_update (EV_P_ ev_tstamp max_block)
1072{ 1653{
1654 int i;
1655
1656#if EV_USE_MONOTONIC
1657 if (expect_true (have_monotonic))
1658 {
1659 ev_tstamp odiff = rtmn_diff;
1660
1073 mn_now = get_clock (); 1661 mn_now = get_clock ();
1074 1662
1663 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1664 /* interpolate in the meantime */
1075 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1665 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1076 { 1666 {
1077 ev_rt_now = rtmn_diff + mn_now; 1667 ev_rt_now = rtmn_diff + mn_now;
1078 return 0; 1668 return;
1079 } 1669 }
1080 else 1670
1081 {
1082 now_floor = mn_now; 1671 now_floor = mn_now;
1083 ev_rt_now = ev_time (); 1672 ev_rt_now = ev_time ();
1084 return 1;
1085 }
1086}
1087 1673
1088static void 1674 /* loop a few times, before making important decisions.
1089time_update (EV_P) 1675 * on the choice of "4": one iteration isn't enough,
1090{ 1676 * in case we get preempted during the calls to
1091 int i; 1677 * ev_time and get_clock. a second call is almost guaranteed
1092 1678 * to succeed in that case, though. and looping a few more times
1093#if EV_USE_MONOTONIC 1679 * doesn't hurt either as we only do this on time-jumps or
1094 if (expect_true (have_monotonic)) 1680 * in the unlikely event of having been preempted here.
1095 { 1681 */
1096 if (time_update_monotonic (EV_A)) 1682 for (i = 4; --i; )
1097 { 1683 {
1098 ev_tstamp odiff = rtmn_diff;
1099
1100 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1101 {
1102 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1103 1685
1104 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1686 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1105 return; /* all is well */ 1687 return; /* all is well */
1106 1688
1107 ev_rt_now = ev_time (); 1689 ev_rt_now = ev_time ();
1108 mn_now = get_clock (); 1690 mn_now = get_clock ();
1109 now_floor = mn_now; 1691 now_floor = mn_now;
1110 } 1692 }
1111 1693
1112# if EV_PERIODICS 1694# if EV_PERIODIC_ENABLE
1695 periodics_reschedule (EV_A);
1696# endif
1697 /* no timer adjustment, as the monotonic clock doesn't jump */
1698 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1699 }
1700 else
1701#endif
1702 {
1703 ev_rt_now = ev_time ();
1704
1705 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1706 {
1707#if EV_PERIODIC_ENABLE
1113 periodics_reschedule (EV_A); 1708 periodics_reschedule (EV_A);
1114# endif 1709#endif
1115 /* no timer adjustment, as the monotonic clock doesn't jump */ 1710 /* adjust timers. this is easy, as the offset is the same for all of them */
1116 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1711 for (i = 1; i <= timercnt; ++i)
1712 ev_at (timers [i]) += ev_rt_now - mn_now;
1117 } 1713 }
1118 }
1119 else
1120#endif
1121 {
1122 ev_rt_now = ev_time ();
1123
1124 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1125 {
1126#if EV_PERIODICS
1127 periodics_reschedule (EV_A);
1128#endif
1129
1130 /* adjust timers. this is easy, as the offset is the same for all */
1131 for (i = 0; i < timercnt; ++i)
1132 ((WT)timers [i])->at += ev_rt_now - mn_now;
1133 }
1134 1714
1135 mn_now = ev_rt_now; 1715 mn_now = ev_rt_now;
1136 } 1716 }
1137} 1717}
1138 1718
… …
1151static int loop_done; 1731static int loop_done;
1152 1732
1153void 1733void
1154ev_loop (EV_P_ int flags) 1734ev_loop (EV_P_ int flags)
1155{ 1735{
1156 double block; 1736 loop_done = EVUNLOOP_CANCEL;
1157 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1737
1738 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1158 1739
1159 do 1740 do
1160 { 1741 {
1742#ifndef _WIN32
1743 if (expect_false (curpid)) /* penalise the forking check even more */
1744 if (expect_false (getpid () != curpid))
1745 {
1746 curpid = getpid ();
1747 postfork = 1;
1748 }
1749#endif
1750
1751#if EV_FORK_ENABLE
1752 /* we might have forked, so queue fork handlers */
1753 if (expect_false (postfork))
1754 if (forkcnt)
1755 {
1756 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1757 call_pending (EV_A);
1758 }
1759#endif
1760
1161 /* queue check watchers (and execute them) */ 1761 /* queue prepare watchers (and execute them) */
1162 if (expect_false (preparecnt)) 1762 if (expect_false (preparecnt))
1163 { 1763 {
1164 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1764 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1165 call_pending (EV_A); 1765 call_pending (EV_A);
1166 } 1766 }
1167 1767
1768 if (expect_false (!activecnt))
1769 break;
1770
1168 /* we might have forked, so reify kernel state if necessary */ 1771 /* we might have forked, so reify kernel state if necessary */
1169 if (expect_false (postfork)) 1772 if (expect_false (postfork))
1170 loop_fork (EV_A); 1773 loop_fork (EV_A);
1171 1774
1172 /* update fd-related kernel structures */ 1775 /* update fd-related kernel structures */
1173 fd_reify (EV_A); 1776 fd_reify (EV_A);
1174 1777
1175 /* calculate blocking time */ 1778 /* calculate blocking time */
1779 {
1780 ev_tstamp waittime = 0.;
1781 ev_tstamp sleeptime = 0.;
1176 1782
1177 /* we only need this for !monotonic clock or timers, but as we basically 1783 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1178 always have timers, we just calculate it always */
1179#if EV_USE_MONOTONIC
1180 if (expect_true (have_monotonic))
1181 time_update_monotonic (EV_A);
1182 else
1183#endif
1184 { 1784 {
1185 ev_rt_now = ev_time (); 1785 /* update time to cancel out callback processing overhead */
1186 mn_now = ev_rt_now; 1786 time_update (EV_A_ 1e100);
1187 }
1188 1787
1189 if (flags & EVLOOP_NONBLOCK || idlecnt)
1190 block = 0.;
1191 else
1192 {
1193 block = MAX_BLOCKTIME; 1788 waittime = MAX_BLOCKTIME;
1194 1789
1195 if (timercnt) 1790 if (timercnt)
1196 { 1791 {
1197 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1792 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1198 if (block > to) block = to; 1793 if (waittime > to) waittime = to;
1199 } 1794 }
1200 1795
1201#if EV_PERIODICS 1796#if EV_PERIODIC_ENABLE
1202 if (periodiccnt) 1797 if (periodiccnt)
1203 { 1798 {
1204 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1799 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1205 if (block > to) block = to; 1800 if (waittime > to) waittime = to;
1206 } 1801 }
1207#endif 1802#endif
1208 1803
1209 if (block < 0.) block = 0.; 1804 if (expect_false (waittime < timeout_blocktime))
1805 waittime = timeout_blocktime;
1806
1807 sleeptime = waittime - backend_fudge;
1808
1809 if (expect_true (sleeptime > io_blocktime))
1810 sleeptime = io_blocktime;
1811
1812 if (sleeptime)
1813 {
1814 ev_sleep (sleeptime);
1815 waittime -= sleeptime;
1816 }
1210 } 1817 }
1211 1818
1212 method_poll (EV_A_ block); 1819 ++loop_count;
1820 backend_poll (EV_A_ waittime);
1213 1821
1214 /* update ev_rt_now, do magic */ 1822 /* update ev_rt_now, do magic */
1215 time_update (EV_A); 1823 time_update (EV_A_ waittime + sleeptime);
1824 }
1216 1825
1217 /* queue pending timers and reschedule them */ 1826 /* queue pending timers and reschedule them */
1218 timers_reify (EV_A); /* relative timers called last */ 1827 timers_reify (EV_A); /* relative timers called last */
1219#if EV_PERIODICS 1828#if EV_PERIODIC_ENABLE
1220 periodics_reify (EV_A); /* absolute timers called first */ 1829 periodics_reify (EV_A); /* absolute timers called first */
1221#endif 1830#endif
1222 1831
1832#if EV_IDLE_ENABLE
1223 /* queue idle watchers unless io or timers are pending */ 1833 /* queue idle watchers unless other events are pending */
1224 if (idlecnt && !any_pending (EV_A)) 1834 idle_reify (EV_A);
1225 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1835#endif
1226 1836
1227 /* queue check watchers, to be executed first */ 1837 /* queue check watchers, to be executed first */
1228 if (checkcnt) 1838 if (expect_false (checkcnt))
1229 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1839 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1230 1840
1231 call_pending (EV_A); 1841 call_pending (EV_A);
1232 } 1842 }
1233 while (activecnt && !loop_done); 1843 while (expect_true (
1844 activecnt
1845 && !loop_done
1846 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1847 ));
1234 1848
1235 if (loop_done != 2) 1849 if (loop_done == EVUNLOOP_ONE)
1236 loop_done = 0; 1850 loop_done = EVUNLOOP_CANCEL;
1237} 1851}
1238 1852
1239void 1853void
1240ev_unloop (EV_P_ int how) 1854ev_unloop (EV_P_ int how)
1241{ 1855{
1242 loop_done = how; 1856 loop_done = how;
1243} 1857}
1244 1858
1245/*****************************************************************************/ 1859/*****************************************************************************/
1246 1860
1247inline void 1861void inline_size
1248wlist_add (WL *head, WL elem) 1862wlist_add (WL *head, WL elem)
1249{ 1863{
1250 elem->next = *head; 1864 elem->next = *head;
1251 *head = elem; 1865 *head = elem;
1252} 1866}
1253 1867
1254inline void 1868void inline_size
1255wlist_del (WL *head, WL elem) 1869wlist_del (WL *head, WL elem)
1256{ 1870{
1257 while (*head) 1871 while (*head)
1258 { 1872 {
1259 if (*head == elem) 1873 if (*head == elem)
… …
1264 1878
1265 head = &(*head)->next; 1879 head = &(*head)->next;
1266 } 1880 }
1267} 1881}
1268 1882
1269inline void 1883void inline_speed
1270ev_clear_pending (EV_P_ W w) 1884clear_pending (EV_P_ W w)
1271{ 1885{
1272 if (w->pending) 1886 if (w->pending)
1273 { 1887 {
1274 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1888 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1275 w->pending = 0; 1889 w->pending = 0;
1276 } 1890 }
1277} 1891}
1278 1892
1279inline void 1893int
1894ev_clear_pending (EV_P_ void *w)
1895{
1896 W w_ = (W)w;
1897 int pending = w_->pending;
1898
1899 if (expect_true (pending))
1900 {
1901 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1902 w_->pending = 0;
1903 p->w = 0;
1904 return p->events;
1905 }
1906 else
1907 return 0;
1908}
1909
1910void inline_size
1911pri_adjust (EV_P_ W w)
1912{
1913 int pri = w->priority;
1914 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1915 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1916 w->priority = pri;
1917}
1918
1919void inline_speed
1280ev_start (EV_P_ W w, int active) 1920ev_start (EV_P_ W w, int active)
1281{ 1921{
1282 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1922 pri_adjust (EV_A_ w);
1283 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1284
1285 w->active = active; 1923 w->active = active;
1286 ev_ref (EV_A); 1924 ev_ref (EV_A);
1287} 1925}
1288 1926
1289inline void 1927void inline_size
1290ev_stop (EV_P_ W w) 1928ev_stop (EV_P_ W w)
1291{ 1929{
1292 ev_unref (EV_A); 1930 ev_unref (EV_A);
1293 w->active = 0; 1931 w->active = 0;
1294} 1932}
1295 1933
1296/*****************************************************************************/ 1934/*****************************************************************************/
1297 1935
1298void 1936void noinline
1299ev_io_start (EV_P_ struct ev_io *w) 1937ev_io_start (EV_P_ ev_io *w)
1300{ 1938{
1301 int fd = w->fd; 1939 int fd = w->fd;
1302 1940
1303 if (ev_is_active (w)) 1941 if (expect_false (ev_is_active (w)))
1304 return; 1942 return;
1305 1943
1306 assert (("ev_io_start called with negative fd", fd >= 0)); 1944 assert (("ev_io_start called with negative fd", fd >= 0));
1307 1945
1308 ev_start (EV_A_ (W)w, 1); 1946 ev_start (EV_A_ (W)w, 1);
1309 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1947 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1310 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1948 wlist_add (&anfds[fd].head, (WL)w);
1311 1949
1312 fd_change (EV_A_ fd); 1950 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1951 w->events &= ~EV_IOFDSET;
1313} 1952}
1314 1953
1315void 1954void noinline
1316ev_io_stop (EV_P_ struct ev_io *w) 1955ev_io_stop (EV_P_ ev_io *w)
1317{ 1956{
1318 ev_clear_pending (EV_A_ (W)w); 1957 clear_pending (EV_A_ (W)w);
1319 if (!ev_is_active (w)) 1958 if (expect_false (!ev_is_active (w)))
1320 return; 1959 return;
1321 1960
1322 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1961 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323 1962
1324 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1963 wlist_del (&anfds[w->fd].head, (WL)w);
1325 ev_stop (EV_A_ (W)w); 1964 ev_stop (EV_A_ (W)w);
1326 1965
1327 fd_change (EV_A_ w->fd); 1966 fd_change (EV_A_ w->fd, 1);
1328} 1967}
1329 1968
1330void 1969void noinline
1331ev_timer_start (EV_P_ struct ev_timer *w) 1970ev_timer_start (EV_P_ ev_timer *w)
1332{ 1971{
1333 if (ev_is_active (w)) 1972 if (expect_false (ev_is_active (w)))
1334 return; 1973 return;
1335 1974
1336 ((WT)w)->at += mn_now; 1975 ev_at (w) += mn_now;
1337 1976
1338 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1977 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1339 1978
1340 ev_start (EV_A_ (W)w, ++timercnt); 1979 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1341 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1980 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1342 timers [timercnt - 1] = w; 1981 timers [ev_active (w)] = (WT)w;
1343 upheap ((WT *)timers, timercnt - 1); 1982 upheap (timers, ev_active (w));
1344 1983
1345 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1984 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1346} 1985}
1347 1986
1348void 1987void noinline
1349ev_timer_stop (EV_P_ struct ev_timer *w) 1988ev_timer_stop (EV_P_ ev_timer *w)
1350{ 1989{
1351 ev_clear_pending (EV_A_ (W)w); 1990 clear_pending (EV_A_ (W)w);
1352 if (!ev_is_active (w)) 1991 if (expect_false (!ev_is_active (w)))
1353 return; 1992 return;
1354 1993
1994 {
1995 int active = ev_active (w);
1996
1355 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1997 assert (("internal timer heap corruption", timers [active] == (WT)w));
1356 1998
1357 if (((W)w)->active < timercnt--) 1999 if (expect_true (active < timercnt + HEAP0 - 1))
1358 { 2000 {
1359 timers [((W)w)->active - 1] = timers [timercnt]; 2001 timers [active] = timers [timercnt + HEAP0 - 1];
1360 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2002 adjustheap (timers, timercnt, active);
1361 } 2003 }
1362 2004
1363 ((WT)w)->at -= mn_now; 2005 --timercnt;
2006 }
2007
2008 ev_at (w) -= mn_now;
1364 2009
1365 ev_stop (EV_A_ (W)w); 2010 ev_stop (EV_A_ (W)w);
1366} 2011}
1367 2012
1368void 2013void noinline
1369ev_timer_again (EV_P_ struct ev_timer *w) 2014ev_timer_again (EV_P_ ev_timer *w)
1370{ 2015{
1371 if (ev_is_active (w)) 2016 if (ev_is_active (w))
1372 { 2017 {
1373 if (w->repeat) 2018 if (w->repeat)
1374 { 2019 {
1375 ((WT)w)->at = mn_now + w->repeat; 2020 ev_at (w) = mn_now + w->repeat;
1376 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2021 adjustheap (timers, timercnt, ev_active (w));
1377 } 2022 }
1378 else 2023 else
1379 ev_timer_stop (EV_A_ w); 2024 ev_timer_stop (EV_A_ w);
1380 } 2025 }
1381 else if (w->repeat) 2026 else if (w->repeat)
2027 {
2028 ev_at (w) = w->repeat;
1382 ev_timer_start (EV_A_ w); 2029 ev_timer_start (EV_A_ w);
2030 }
1383} 2031}
1384 2032
1385#if EV_PERIODICS 2033#if EV_PERIODIC_ENABLE
1386void 2034void noinline
1387ev_periodic_start (EV_P_ struct ev_periodic *w) 2035ev_periodic_start (EV_P_ ev_periodic *w)
1388{ 2036{
1389 if (ev_is_active (w)) 2037 if (expect_false (ev_is_active (w)))
1390 return; 2038 return;
1391 2039
1392 if (w->reschedule_cb) 2040 if (w->reschedule_cb)
1393 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2041 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1394 else if (w->interval) 2042 else if (w->interval)
1395 { 2043 {
1396 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2044 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1397 /* this formula differs from the one in periodic_reify because we do not always round up */ 2045 /* this formula differs from the one in periodic_reify because we do not always round up */
1398 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2046 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1399 } 2047 }
2048 else
2049 ev_at (w) = w->offset;
1400 2050
1401 ev_start (EV_A_ (W)w, ++periodiccnt); 2051 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1402 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2052 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1403 periodics [periodiccnt - 1] = w; 2053 periodics [ev_active (w)] = (WT)w;
1404 upheap ((WT *)periodics, periodiccnt - 1); 2054 upheap (periodics, ev_active (w));
1405 2055
1406 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2056 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1407} 2057}
1408 2058
1409void 2059void noinline
1410ev_periodic_stop (EV_P_ struct ev_periodic *w) 2060ev_periodic_stop (EV_P_ ev_periodic *w)
1411{ 2061{
1412 ev_clear_pending (EV_A_ (W)w); 2062 clear_pending (EV_A_ (W)w);
1413 if (!ev_is_active (w)) 2063 if (expect_false (!ev_is_active (w)))
1414 return; 2064 return;
1415 2065
2066 {
2067 int active = ev_active (w);
2068
1416 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2069 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1417 2070
1418 if (((W)w)->active < periodiccnt--) 2071 if (expect_true (active < periodiccnt + HEAP0 - 1))
1419 { 2072 {
1420 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2073 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1421 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2074 adjustheap (periodics, periodiccnt, active);
1422 } 2075 }
2076
2077 --periodiccnt;
2078 }
1423 2079
1424 ev_stop (EV_A_ (W)w); 2080 ev_stop (EV_A_ (W)w);
1425} 2081}
1426 2082
1427void 2083void noinline
1428ev_periodic_again (EV_P_ struct ev_periodic *w) 2084ev_periodic_again (EV_P_ ev_periodic *w)
1429{ 2085{
1430 /* TODO: use adjustheap and recalculation */ 2086 /* TODO: use adjustheap and recalculation */
1431 ev_periodic_stop (EV_A_ w); 2087 ev_periodic_stop (EV_A_ w);
1432 ev_periodic_start (EV_A_ w); 2088 ev_periodic_start (EV_A_ w);
1433} 2089}
1434#endif 2090#endif
1435 2091
1436void
1437ev_idle_start (EV_P_ struct ev_idle *w)
1438{
1439 if (ev_is_active (w))
1440 return;
1441
1442 ev_start (EV_A_ (W)w, ++idlecnt);
1443 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1444 idles [idlecnt - 1] = w;
1445}
1446
1447void
1448ev_idle_stop (EV_P_ struct ev_idle *w)
1449{
1450 ev_clear_pending (EV_A_ (W)w);
1451 if (!ev_is_active (w))
1452 return;
1453
1454 idles [((W)w)->active - 1] = idles [--idlecnt];
1455 ev_stop (EV_A_ (W)w);
1456}
1457
1458void
1459ev_prepare_start (EV_P_ struct ev_prepare *w)
1460{
1461 if (ev_is_active (w))
1462 return;
1463
1464 ev_start (EV_A_ (W)w, ++preparecnt);
1465 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1466 prepares [preparecnt - 1] = w;
1467}
1468
1469void
1470ev_prepare_stop (EV_P_ struct ev_prepare *w)
1471{
1472 ev_clear_pending (EV_A_ (W)w);
1473 if (!ev_is_active (w))
1474 return;
1475
1476 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1477 ev_stop (EV_A_ (W)w);
1478}
1479
1480void
1481ev_check_start (EV_P_ struct ev_check *w)
1482{
1483 if (ev_is_active (w))
1484 return;
1485
1486 ev_start (EV_A_ (W)w, ++checkcnt);
1487 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1488 checks [checkcnt - 1] = w;
1489}
1490
1491void
1492ev_check_stop (EV_P_ struct ev_check *w)
1493{
1494 ev_clear_pending (EV_A_ (W)w);
1495 if (!ev_is_active (w))
1496 return;
1497
1498 checks [((W)w)->active - 1] = checks [--checkcnt];
1499 ev_stop (EV_A_ (W)w);
1500}
1501
1502#ifndef SA_RESTART 2092#ifndef SA_RESTART
1503# define SA_RESTART 0 2093# define SA_RESTART 0
1504#endif 2094#endif
1505 2095
1506void 2096void noinline
1507ev_signal_start (EV_P_ struct ev_signal *w) 2097ev_signal_start (EV_P_ ev_signal *w)
1508{ 2098{
1509#if EV_MULTIPLICITY 2099#if EV_MULTIPLICITY
1510 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2100 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1511#endif 2101#endif
1512 if (ev_is_active (w)) 2102 if (expect_false (ev_is_active (w)))
1513 return; 2103 return;
1514 2104
1515 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2105 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1516 2106
2107 evpipe_init (EV_A);
2108
2109 {
2110#ifndef _WIN32
2111 sigset_t full, prev;
2112 sigfillset (&full);
2113 sigprocmask (SIG_SETMASK, &full, &prev);
2114#endif
2115
2116 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2117
2118#ifndef _WIN32
2119 sigprocmask (SIG_SETMASK, &prev, 0);
2120#endif
2121 }
2122
1517 ev_start (EV_A_ (W)w, 1); 2123 ev_start (EV_A_ (W)w, 1);
1518 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1519 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2124 wlist_add (&signals [w->signum - 1].head, (WL)w);
1520 2125
1521 if (!((WL)w)->next) 2126 if (!((WL)w)->next)
1522 { 2127 {
1523#if _WIN32 2128#if _WIN32
1524 signal (w->signum, sighandler); 2129 signal (w->signum, ev_sighandler);
1525#else 2130#else
1526 struct sigaction sa; 2131 struct sigaction sa;
1527 sa.sa_handler = sighandler; 2132 sa.sa_handler = ev_sighandler;
1528 sigfillset (&sa.sa_mask); 2133 sigfillset (&sa.sa_mask);
1529 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2134 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1530 sigaction (w->signum, &sa, 0); 2135 sigaction (w->signum, &sa, 0);
1531#endif 2136#endif
1532 } 2137 }
1533} 2138}
1534 2139
1535void 2140void noinline
1536ev_signal_stop (EV_P_ struct ev_signal *w) 2141ev_signal_stop (EV_P_ ev_signal *w)
1537{ 2142{
1538 ev_clear_pending (EV_A_ (W)w); 2143 clear_pending (EV_A_ (W)w);
1539 if (!ev_is_active (w)) 2144 if (expect_false (!ev_is_active (w)))
1540 return; 2145 return;
1541 2146
1542 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2147 wlist_del (&signals [w->signum - 1].head, (WL)w);
1543 ev_stop (EV_A_ (W)w); 2148 ev_stop (EV_A_ (W)w);
1544 2149
1545 if (!signals [w->signum - 1].head) 2150 if (!signals [w->signum - 1].head)
1546 signal (w->signum, SIG_DFL); 2151 signal (w->signum, SIG_DFL);
1547} 2152}
1548 2153
1549void 2154void
1550ev_child_start (EV_P_ struct ev_child *w) 2155ev_child_start (EV_P_ ev_child *w)
1551{ 2156{
1552#if EV_MULTIPLICITY 2157#if EV_MULTIPLICITY
1553 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2158 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1554#endif 2159#endif
1555 if (ev_is_active (w)) 2160 if (expect_false (ev_is_active (w)))
1556 return; 2161 return;
1557 2162
1558 ev_start (EV_A_ (W)w, 1); 2163 ev_start (EV_A_ (W)w, 1);
1559 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2164 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1560} 2165}
1561 2166
1562void 2167void
1563ev_child_stop (EV_P_ struct ev_child *w) 2168ev_child_stop (EV_P_ ev_child *w)
1564{ 2169{
1565 ev_clear_pending (EV_A_ (W)w); 2170 clear_pending (EV_A_ (W)w);
1566 if (!ev_is_active (w)) 2171 if (expect_false (!ev_is_active (w)))
1567 return; 2172 return;
1568 2173
1569 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2174 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1570 ev_stop (EV_A_ (W)w); 2175 ev_stop (EV_A_ (W)w);
1571} 2176}
1572 2177
2178#if EV_STAT_ENABLE
2179
2180# ifdef _WIN32
2181# undef lstat
2182# define lstat(a,b) _stati64 (a,b)
2183# endif
2184
2185#define DEF_STAT_INTERVAL 5.0074891
2186#define MIN_STAT_INTERVAL 0.1074891
2187
2188static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2189
2190#if EV_USE_INOTIFY
2191# define EV_INOTIFY_BUFSIZE 8192
2192
2193static void noinline
2194infy_add (EV_P_ ev_stat *w)
2195{
2196 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);
2197
2198 if (w->wd < 0)
2199 {
2200 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2201
2202 /* monitor some parent directory for speedup hints */
2203 /* note that exceeding the hardcoded limit is not a correctness issue, */
2204 /* but an efficiency issue only */
2205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2206 {
2207 char path [4096];
2208 strcpy (path, w->path);
2209
2210 do
2211 {
2212 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2213 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2214
2215 char *pend = strrchr (path, '/');
2216
2217 if (!pend)
2218 break; /* whoops, no '/', complain to your admin */
2219
2220 *pend = 0;
2221 w->wd = inotify_add_watch (fs_fd, path, mask);
2222 }
2223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2224 }
2225 }
2226 else
2227 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2228
2229 if (w->wd >= 0)
2230 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2231}
2232
2233static void noinline
2234infy_del (EV_P_ ev_stat *w)
2235{
2236 int slot;
2237 int wd = w->wd;
2238
2239 if (wd < 0)
2240 return;
2241
2242 w->wd = -2;
2243 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2244 wlist_del (&fs_hash [slot].head, (WL)w);
2245
2246 /* remove this watcher, if others are watching it, they will rearm */
2247 inotify_rm_watch (fs_fd, wd);
2248}
2249
2250static void noinline
2251infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2252{
2253 if (slot < 0)
2254 /* overflow, need to check for all hahs slots */
2255 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2256 infy_wd (EV_A_ slot, wd, ev);
2257 else
2258 {
2259 WL w_;
2260
2261 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2262 {
2263 ev_stat *w = (ev_stat *)w_;
2264 w_ = w_->next; /* lets us remove this watcher and all before it */
2265
2266 if (w->wd == wd || wd == -1)
2267 {
2268 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2269 {
2270 w->wd = -1;
2271 infy_add (EV_A_ w); /* re-add, no matter what */
2272 }
2273
2274 stat_timer_cb (EV_A_ &w->timer, 0);
2275 }
2276 }
2277 }
2278}
2279
2280static void
2281infy_cb (EV_P_ ev_io *w, int revents)
2282{
2283 char buf [EV_INOTIFY_BUFSIZE];
2284 struct inotify_event *ev = (struct inotify_event *)buf;
2285 int ofs;
2286 int len = read (fs_fd, buf, sizeof (buf));
2287
2288 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2289 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2290}
2291
2292void inline_size
2293infy_init (EV_P)
2294{
2295 if (fs_fd != -2)
2296 return;
2297
2298 fs_fd = inotify_init ();
2299
2300 if (fs_fd >= 0)
2301 {
2302 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2303 ev_set_priority (&fs_w, EV_MAXPRI);
2304 ev_io_start (EV_A_ &fs_w);
2305 }
2306}
2307
2308void inline_size
2309infy_fork (EV_P)
2310{
2311 int slot;
2312
2313 if (fs_fd < 0)
2314 return;
2315
2316 close (fs_fd);
2317 fs_fd = inotify_init ();
2318
2319 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2320 {
2321 WL w_ = fs_hash [slot].head;
2322 fs_hash [slot].head = 0;
2323
2324 while (w_)
2325 {
2326 ev_stat *w = (ev_stat *)w_;
2327 w_ = w_->next; /* lets us add this watcher */
2328
2329 w->wd = -1;
2330
2331 if (fs_fd >= 0)
2332 infy_add (EV_A_ w); /* re-add, no matter what */
2333 else
2334 ev_timer_start (EV_A_ &w->timer);
2335 }
2336
2337 }
2338}
2339
2340#endif
2341
2342void
2343ev_stat_stat (EV_P_ ev_stat *w)
2344{
2345 if (lstat (w->path, &w->attr) < 0)
2346 w->attr.st_nlink = 0;
2347 else if (!w->attr.st_nlink)
2348 w->attr.st_nlink = 1;
2349}
2350
2351static void noinline
2352stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2353{
2354 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2355
2356 /* we copy this here each the time so that */
2357 /* prev has the old value when the callback gets invoked */
2358 w->prev = w->attr;
2359 ev_stat_stat (EV_A_ w);
2360
2361 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2362 if (
2363 w->prev.st_dev != w->attr.st_dev
2364 || w->prev.st_ino != w->attr.st_ino
2365 || w->prev.st_mode != w->attr.st_mode
2366 || w->prev.st_nlink != w->attr.st_nlink
2367 || w->prev.st_uid != w->attr.st_uid
2368 || w->prev.st_gid != w->attr.st_gid
2369 || w->prev.st_rdev != w->attr.st_rdev
2370 || w->prev.st_size != w->attr.st_size
2371 || w->prev.st_atime != w->attr.st_atime
2372 || w->prev.st_mtime != w->attr.st_mtime
2373 || w->prev.st_ctime != w->attr.st_ctime
2374 ) {
2375 #if EV_USE_INOTIFY
2376 infy_del (EV_A_ w);
2377 infy_add (EV_A_ w);
2378 ev_stat_stat (EV_A_ w); /* avoid race... */
2379 #endif
2380
2381 ev_feed_event (EV_A_ w, EV_STAT);
2382 }
2383}
2384
2385void
2386ev_stat_start (EV_P_ ev_stat *w)
2387{
2388 if (expect_false (ev_is_active (w)))
2389 return;
2390
2391 /* since we use memcmp, we need to clear any padding data etc. */
2392 memset (&w->prev, 0, sizeof (ev_statdata));
2393 memset (&w->attr, 0, sizeof (ev_statdata));
2394
2395 ev_stat_stat (EV_A_ w);
2396
2397 if (w->interval < MIN_STAT_INTERVAL)
2398 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2399
2400 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2401 ev_set_priority (&w->timer, ev_priority (w));
2402
2403#if EV_USE_INOTIFY
2404 infy_init (EV_A);
2405
2406 if (fs_fd >= 0)
2407 infy_add (EV_A_ w);
2408 else
2409#endif
2410 ev_timer_start (EV_A_ &w->timer);
2411
2412 ev_start (EV_A_ (W)w, 1);
2413}
2414
2415void
2416ev_stat_stop (EV_P_ ev_stat *w)
2417{
2418 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w)))
2420 return;
2421
2422#if EV_USE_INOTIFY
2423 infy_del (EV_A_ w);
2424#endif
2425 ev_timer_stop (EV_A_ &w->timer);
2426
2427 ev_stop (EV_A_ (W)w);
2428}
2429#endif
2430
2431#if EV_IDLE_ENABLE
2432void
2433ev_idle_start (EV_P_ ev_idle *w)
2434{
2435 if (expect_false (ev_is_active (w)))
2436 return;
2437
2438 pri_adjust (EV_A_ (W)w);
2439
2440 {
2441 int active = ++idlecnt [ABSPRI (w)];
2442
2443 ++idleall;
2444 ev_start (EV_A_ (W)w, active);
2445
2446 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2447 idles [ABSPRI (w)][active - 1] = w;
2448 }
2449}
2450
2451void
2452ev_idle_stop (EV_P_ ev_idle *w)
2453{
2454 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w)))
2456 return;
2457
2458 {
2459 int active = ev_active (w);
2460
2461 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2462 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2463
2464 ev_stop (EV_A_ (W)w);
2465 --idleall;
2466 }
2467}
2468#endif
2469
2470void
2471ev_prepare_start (EV_P_ ev_prepare *w)
2472{
2473 if (expect_false (ev_is_active (w)))
2474 return;
2475
2476 ev_start (EV_A_ (W)w, ++preparecnt);
2477 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2478 prepares [preparecnt - 1] = w;
2479}
2480
2481void
2482ev_prepare_stop (EV_P_ ev_prepare *w)
2483{
2484 clear_pending (EV_A_ (W)w);
2485 if (expect_false (!ev_is_active (w)))
2486 return;
2487
2488 {
2489 int active = ev_active (w);
2490
2491 prepares [active - 1] = prepares [--preparecnt];
2492 ev_active (prepares [active - 1]) = active;
2493 }
2494
2495 ev_stop (EV_A_ (W)w);
2496}
2497
2498void
2499ev_check_start (EV_P_ ev_check *w)
2500{
2501 if (expect_false (ev_is_active (w)))
2502 return;
2503
2504 ev_start (EV_A_ (W)w, ++checkcnt);
2505 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2506 checks [checkcnt - 1] = w;
2507}
2508
2509void
2510ev_check_stop (EV_P_ ev_check *w)
2511{
2512 clear_pending (EV_A_ (W)w);
2513 if (expect_false (!ev_is_active (w)))
2514 return;
2515
2516 {
2517 int active = ev_active (w);
2518
2519 checks [active - 1] = checks [--checkcnt];
2520 ev_active (checks [active - 1]) = active;
2521 }
2522
2523 ev_stop (EV_A_ (W)w);
2524}
2525
2526#if EV_EMBED_ENABLE
2527void noinline
2528ev_embed_sweep (EV_P_ ev_embed *w)
2529{
2530 ev_loop (w->other, EVLOOP_NONBLOCK);
2531}
2532
2533static void
2534embed_io_cb (EV_P_ ev_io *io, int revents)
2535{
2536 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2537
2538 if (ev_cb (w))
2539 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2540 else
2541 ev_loop (w->other, EVLOOP_NONBLOCK);
2542}
2543
2544static void
2545embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2546{
2547 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2548
2549 {
2550 struct ev_loop *loop = w->other;
2551
2552 while (fdchangecnt)
2553 {
2554 fd_reify (EV_A);
2555 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2556 }
2557 }
2558}
2559
2560#if 0
2561static void
2562embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2563{
2564 ev_idle_stop (EV_A_ idle);
2565}
2566#endif
2567
2568void
2569ev_embed_start (EV_P_ ev_embed *w)
2570{
2571 if (expect_false (ev_is_active (w)))
2572 return;
2573
2574 {
2575 struct ev_loop *loop = w->other;
2576 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2577 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2578 }
2579
2580 ev_set_priority (&w->io, ev_priority (w));
2581 ev_io_start (EV_A_ &w->io);
2582
2583 ev_prepare_init (&w->prepare, embed_prepare_cb);
2584 ev_set_priority (&w->prepare, EV_MINPRI);
2585 ev_prepare_start (EV_A_ &w->prepare);
2586
2587 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2588
2589 ev_start (EV_A_ (W)w, 1);
2590}
2591
2592void
2593ev_embed_stop (EV_P_ ev_embed *w)
2594{
2595 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w)))
2597 return;
2598
2599 ev_io_stop (EV_A_ &w->io);
2600 ev_prepare_stop (EV_A_ &w->prepare);
2601
2602 ev_stop (EV_A_ (W)w);
2603}
2604#endif
2605
2606#if EV_FORK_ENABLE
2607void
2608ev_fork_start (EV_P_ ev_fork *w)
2609{
2610 if (expect_false (ev_is_active (w)))
2611 return;
2612
2613 ev_start (EV_A_ (W)w, ++forkcnt);
2614 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2615 forks [forkcnt - 1] = w;
2616}
2617
2618void
2619ev_fork_stop (EV_P_ ev_fork *w)
2620{
2621 clear_pending (EV_A_ (W)w);
2622 if (expect_false (!ev_is_active (w)))
2623 return;
2624
2625 {
2626 int active = ev_active (w);
2627
2628 forks [active - 1] = forks [--forkcnt];
2629 ev_active (forks [active - 1]) = active;
2630 }
2631
2632 ev_stop (EV_A_ (W)w);
2633}
2634#endif
2635
2636#if EV_ASYNC_ENABLE
2637void
2638ev_async_start (EV_P_ ev_async *w)
2639{
2640 if (expect_false (ev_is_active (w)))
2641 return;
2642
2643 evpipe_init (EV_A);
2644
2645 ev_start (EV_A_ (W)w, ++asynccnt);
2646 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2647 asyncs [asynccnt - 1] = w;
2648}
2649
2650void
2651ev_async_stop (EV_P_ ev_async *w)
2652{
2653 clear_pending (EV_A_ (W)w);
2654 if (expect_false (!ev_is_active (w)))
2655 return;
2656
2657 {
2658 int active = ev_active (w);
2659
2660 asyncs [active - 1] = asyncs [--asynccnt];
2661 ev_active (asyncs [active - 1]) = active;
2662 }
2663
2664 ev_stop (EV_A_ (W)w);
2665}
2666
2667void
2668ev_async_send (EV_P_ ev_async *w)
2669{
2670 w->sent = 1;
2671 evpipe_write (EV_A_ &gotasync);
2672}
2673#endif
2674
1573/*****************************************************************************/ 2675/*****************************************************************************/
1574 2676
1575struct ev_once 2677struct ev_once
1576{ 2678{
1577 struct ev_io io; 2679 ev_io io;
1578 struct ev_timer to; 2680 ev_timer to;
1579 void (*cb)(int revents, void *arg); 2681 void (*cb)(int revents, void *arg);
1580 void *arg; 2682 void *arg;
1581}; 2683};
1582 2684
1583static void 2685static void
… …
1592 2694
1593 cb (revents, arg); 2695 cb (revents, arg);
1594} 2696}
1595 2697
1596static void 2698static void
1597once_cb_io (EV_P_ struct ev_io *w, int revents) 2699once_cb_io (EV_P_ ev_io *w, int revents)
1598{ 2700{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2701 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1600} 2702}
1601 2703
1602static void 2704static void
1603once_cb_to (EV_P_ struct ev_timer *w, int revents) 2705once_cb_to (EV_P_ ev_timer *w, int revents)
1604{ 2706{
1605 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2707 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1606} 2708}
1607 2709
1608void 2710void
1609ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2711ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1610{ 2712{
1611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2713 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1612 2714
1613 if (!once) 2715 if (expect_false (!once))
2716 {
1614 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2717 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1615 else 2718 return;
1616 { 2719 }
2720
1617 once->cb = cb; 2721 once->cb = cb;
1618 once->arg = arg; 2722 once->arg = arg;
1619 2723
1620 ev_init (&once->io, once_cb_io); 2724 ev_init (&once->io, once_cb_io);
1621 if (fd >= 0) 2725 if (fd >= 0)
1622 { 2726 {
1623 ev_io_set (&once->io, fd, events); 2727 ev_io_set (&once->io, fd, events);
1624 ev_io_start (EV_A_ &once->io); 2728 ev_io_start (EV_A_ &once->io);
1625 } 2729 }
1626 2730
1627 ev_init (&once->to, once_cb_to); 2731 ev_init (&once->to, once_cb_to);
1628 if (timeout >= 0.) 2732 if (timeout >= 0.)
1629 { 2733 {
1630 ev_timer_set (&once->to, timeout, 0.); 2734 ev_timer_set (&once->to, timeout, 0.);
1631 ev_timer_start (EV_A_ &once->to); 2735 ev_timer_start (EV_A_ &once->to);
1632 }
1633 } 2736 }
1634} 2737}
2738
2739#if EV_MULTIPLICITY
2740 #include "ev_wrap.h"
2741#endif
1635 2742
1636#ifdef __cplusplus 2743#ifdef __cplusplus
1637} 2744}
1638#endif 2745#endif
1639 2746

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