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Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 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) 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 && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
58# endif 90# endif
59 91
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
62# endif 98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
63 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
64#endif 132#endif
65 133
66#include <math.h> 134#include <math.h>
67#include <stdlib.h> 135#include <stdlib.h>
68#include <fcntl.h> 136#include <fcntl.h>
… …
75#include <sys/types.h> 143#include <sys/types.h>
76#include <time.h> 144#include <time.h>
77 145
78#include <signal.h> 146#include <signal.h>
79 147
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 148#ifdef EV_H
141# include EV_H 149# include EV_H
142#else 150#else
143# include "ev.h" 151# include "ev.h"
144#endif 152#endif
145 153
154#ifndef _WIN32
155# include <sys/time.h>
156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
163# endif
164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
167
168#ifndef EV_USE_MONOTONIC
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
178#endif
179
180#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1
182#endif
183
184#ifndef EV_USE_POLL
185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
190#endif
191
192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
196# define EV_USE_EPOLL 0
197# endif
198#endif
199
200#ifndef EV_USE_KQUEUE
201# define EV_USE_KQUEUE 0
202#endif
203
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))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241
242#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0
245#endif
246
247#ifndef CLOCK_REALTIME
248# undef EV_USE_REALTIME
249# define EV_USE_REALTIME 0
250#endif
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
267#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h>
269#endif
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
283/**/
284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298
146#if __GNUC__ >= 3 299#if __GNUC__ >= 4
147# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 301# define noinline __attribute__ ((noinline))
149#else 302#else
150# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
151# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
152#endif 308#endif
153 309
154#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
155#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
156 319
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 322
323#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */
325
160typedef struct ev_watcher *W; 326typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
163 329
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 */
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
165 338
339#ifdef _WIN32
166#include "ev_win32.c" 340# include "ev_win32.c"
341#endif
167 342
168/*****************************************************************************/ 343/*****************************************************************************/
169 344
170static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
171 346
347void
172void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
173{ 349{
174 syserr_cb = cb; 350 syserr_cb = cb;
175} 351}
176 352
177static void 353static void noinline
178syserr (const char *msg) 354syserr (const char *msg)
179{ 355{
180 if (!msg) 356 if (!msg)
181 msg = "(libev) system error"; 357 msg = "(libev) system error";
182 358
… …
187 perror (msg); 363 perror (msg);
188 abort (); 364 abort ();
189 } 365 }
190} 366}
191 367
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
192static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
193 384
385void
194void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
195{ 387{
196 alloc = cb; 388 alloc = cb;
197} 389}
198 390
199static void * 391inline_speed void *
200ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
201{ 393{
202 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
203 395
204 if (!ptr && size) 396 if (!ptr && size)
205 { 397 {
206 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
207 abort (); 399 abort ();
… …
218typedef struct 410typedef struct
219{ 411{
220 WL head; 412 WL head;
221 unsigned char events; 413 unsigned char events;
222 unsigned char reify; 414 unsigned char reify;
415#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle;
417#endif
223} ANFD; 418} ANFD;
224 419
225typedef struct 420typedef struct
226{ 421{
227 W w; 422 W w;
228 int events; 423 int events;
229} ANPENDING; 424} ANPENDING;
230 425
426#if EV_USE_INOTIFY
427typedef struct
428{
429 WL head;
430} ANFS;
431#endif
432
231#if EV_MULTIPLICITY 433#if EV_MULTIPLICITY
232 434
233 struct ev_loop 435 struct ev_loop
234 { 436 {
235 ev_tstamp ev_rt_now; 437 ev_tstamp ev_rt_now;
438 #define ev_rt_now ((loop)->ev_rt_now)
236 #define VAR(name,decl) decl; 439 #define VAR(name,decl) decl;
237 #include "ev_vars.h" 440 #include "ev_vars.h"
238 #undef VAR 441 #undef VAR
239 }; 442 };
240 #include "ev_wrap.h" 443 #include "ev_wrap.h"
241 444
242 struct ev_loop default_loop_struct; 445 static struct ev_loop default_loop_struct;
243 static struct ev_loop *default_loop; 446 struct ev_loop *ev_default_loop_ptr;
244 447
245#else 448#else
246 449
247 ev_tstamp ev_rt_now; 450 ev_tstamp ev_rt_now;
248 #define VAR(name,decl) static decl; 451 #define VAR(name,decl) static decl;
249 #include "ev_vars.h" 452 #include "ev_vars.h"
250 #undef VAR 453 #undef VAR
251 454
252 static int default_loop; 455 static int ev_default_loop_ptr;
253 456
254#endif 457#endif
255 458
256/*****************************************************************************/ 459/*****************************************************************************/
257 460
… …
267 gettimeofday (&tv, 0); 470 gettimeofday (&tv, 0);
268 return tv.tv_sec + tv.tv_usec * 1e-6; 471 return tv.tv_sec + tv.tv_usec * 1e-6;
269#endif 472#endif
270} 473}
271 474
272inline ev_tstamp 475ev_tstamp inline_size
273get_clock (void) 476get_clock (void)
274{ 477{
275#if EV_USE_MONOTONIC 478#if EV_USE_MONOTONIC
276 if (expect_true (have_monotonic)) 479 if (expect_true (have_monotonic))
277 { 480 {
… …
290{ 493{
291 return ev_rt_now; 494 return ev_rt_now;
292} 495}
293#endif 496#endif
294 497
295#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}
296 554
297#define array_needsize(type,base,cur,cnt,init) \ 555#define array_needsize(type,base,cur,cnt,init) \
298 if (expect_false ((cnt) > cur)) \ 556 if (expect_false ((cnt) > (cur))) \
299 { \ 557 { \
300 int newcnt = cur; \ 558 int ocur_ = (cur); \
301 do \ 559 (base) = (type *)array_realloc \
302 { \ 560 (sizeof (type), (base), &(cur), (cnt)); \
303 newcnt = array_roundsize (type, newcnt << 1); \ 561 init ((base) + (ocur_), (cur) - ocur_); \
304 } \
305 while ((cnt) > newcnt); \
306 \
307 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
308 init (base + cur, newcnt - cur); \
309 cur = newcnt; \
310 } 562 }
311 563
564#if 0
312#define array_slim(type,stem) \ 565#define array_slim(type,stem) \
313 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 566 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314 { \ 567 { \
315 stem ## max = array_roundsize (stem ## cnt >> 1); \ 568 stem ## max = array_roundsize (stem ## cnt >> 1); \
316 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 569 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318 } 571 }
319 572#endif
320/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322#define array_free_microshit(stem) \
323 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324 573
325#define array_free(stem, idx) \ 574#define array_free(stem, idx) \
326 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;
327 576
328/*****************************************************************************/ 577/*****************************************************************************/
329 578
330static 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
331anfds_init (ANFD *base, int count) 608anfds_init (ANFD *base, int count)
332{ 609{
333 while (count--) 610 while (count--)
334 { 611 {
335 base->head = 0; 612 base->head = 0;
… …
338 615
339 ++base; 616 ++base;
340 } 617 }
341} 618}
342 619
343void 620void inline_speed
344ev_feed_event (EV_P_ void *w, int revents)
345{
346 W w_ = (W)w;
347
348 if (w_->pending)
349 {
350 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351 return;
352 }
353
354 w_->pending = ++pendingcnt [ABSPRI (w_)];
355 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
356 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358}
359
360static void
361queue_events (EV_P_ W *events, int eventcnt, int type)
362{
363 int i;
364
365 for (i = 0; i < eventcnt; ++i)
366 ev_feed_event (EV_A_ events [i], type);
367}
368
369inline void
370fd_event (EV_P_ int fd, int revents) 621fd_event (EV_P_ int fd, int revents)
371{ 622{
372 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
373 struct ev_io *w; 624 ev_io *w;
374 625
375 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)
376 { 627 {
377 int ev = w->events & revents; 628 int ev = w->events & revents;
378 629
379 if (ev) 630 if (ev)
380 ev_feed_event (EV_A_ (W)w, ev); 631 ev_feed_event (EV_A_ (W)w, ev);
… …
382} 633}
383 634
384void 635void
385ev_feed_fd_event (EV_P_ int fd, int revents) 636ev_feed_fd_event (EV_P_ int fd, int revents)
386{ 637{
638 if (fd >= 0 && fd < anfdmax)
387 fd_event (EV_A_ fd, revents); 639 fd_event (EV_A_ fd, revents);
388} 640}
389 641
390/*****************************************************************************/ 642void inline_size
391
392static void
393fd_reify (EV_P) 643fd_reify (EV_P)
394{ 644{
395 int i; 645 int i;
396 646
397 for (i = 0; i < fdchangecnt; ++i) 647 for (i = 0; i < fdchangecnt; ++i)
398 { 648 {
399 int fd = fdchanges [i]; 649 int fd = fdchanges [i];
400 ANFD *anfd = anfds + fd; 650 ANFD *anfd = anfds + fd;
401 struct ev_io *w; 651 ev_io *w;
402 652
403 int events = 0; 653 unsigned char events = 0;
404 654
405 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)
406 events |= w->events; 656 events |= (unsigned char)w->events;
407 657
658#if EV_SELECT_IS_WINSOCKET
659 if (events)
660 {
661 unsigned long argp;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
665 anfd->handle = _get_osfhandle (fd);
666 #endif
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
668 }
669#endif
670
671 {
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
408 anfd->reify = 0; 675 anfd->reify = 0;
409
410 method_modify (EV_A_ fd, anfd->events, events);
411 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 }
412 } 681 }
413 682
414 fdchangecnt = 0; 683 fdchangecnt = 0;
415} 684}
416 685
417static void 686void inline_size
418fd_change (EV_P_ int fd) 687fd_change (EV_P_ int fd, int flags)
419{ 688{
420 if (anfds [fd].reify) 689 unsigned char reify = anfds [fd].reify;
421 return;
422
423 anfds [fd].reify = 1; 690 anfds [fd].reify |= flags;
424 691
692 if (expect_true (!reify))
693 {
425 ++fdchangecnt; 694 ++fdchangecnt;
426 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427 fdchanges [fdchangecnt - 1] = fd; 696 fdchanges [fdchangecnt - 1] = fd;
697 }
428} 698}
429 699
430static void 700void inline_speed
431fd_kill (EV_P_ int fd) 701fd_kill (EV_P_ int fd)
432{ 702{
433 struct ev_io *w; 703 ev_io *w;
434 704
435 while ((w = (struct ev_io *)anfds [fd].head)) 705 while ((w = (ev_io *)anfds [fd].head))
436 { 706 {
437 ev_io_stop (EV_A_ w); 707 ev_io_stop (EV_A_ w);
438 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);
439 } 709 }
440} 710}
441 711
442static int 712int inline_size
443fd_valid (int fd) 713fd_valid (int fd)
444{ 714{
445#ifdef WIN32 715#ifdef _WIN32
446 return !!win32_get_osfhandle (fd); 716 return _get_osfhandle (fd) != -1;
447#else 717#else
448 return fcntl (fd, F_GETFD) != -1; 718 return fcntl (fd, F_GETFD) != -1;
449#endif 719#endif
450} 720}
451 721
452/* called on EBADF to verify fds */ 722/* called on EBADF to verify fds */
453static void 723static void noinline
454fd_ebadf (EV_P) 724fd_ebadf (EV_P)
455{ 725{
456 int fd; 726 int fd;
457 727
458 for (fd = 0; fd < anfdmax; ++fd) 728 for (fd = 0; fd < anfdmax; ++fd)
… …
460 if (!fd_valid (fd) == -1 && errno == EBADF) 730 if (!fd_valid (fd) == -1 && errno == EBADF)
461 fd_kill (EV_A_ fd); 731 fd_kill (EV_A_ fd);
462} 732}
463 733
464/* 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 */
465static void 735static void noinline
466fd_enomem (EV_P) 736fd_enomem (EV_P)
467{ 737{
468 int fd; 738 int fd;
469 739
470 for (fd = anfdmax; fd--; ) 740 for (fd = anfdmax; fd--; )
… …
473 fd_kill (EV_A_ fd); 743 fd_kill (EV_A_ fd);
474 return; 744 return;
475 } 745 }
476} 746}
477 747
478/* 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 */
479static void 749static void noinline
480fd_rearm_all (EV_P) 750fd_rearm_all (EV_P)
481{ 751{
482 int fd; 752 int fd;
483 753
484 /* this should be highly optimised to not do anything but set a flag */
485 for (fd = 0; fd < anfdmax; ++fd) 754 for (fd = 0; fd < anfdmax; ++fd)
486 if (anfds [fd].events) 755 if (anfds [fd].events)
487 { 756 {
488 anfds [fd].events = 0; 757 anfds [fd].events = 0;
489 fd_change (EV_A_ fd); 758 fd_change (EV_A_ fd, EV_IOFDSET | 1);
490 } 759 }
491} 760}
492 761
493/*****************************************************************************/ 762/*****************************************************************************/
494 763
495static 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
496upheap (WT *heap, int k) 777upheap (WT *heap, int k)
497{ 778{
498 WT w = heap [k]; 779 WT w = heap [k];
499 780
500 while (k && heap [k >> 1]->at > w->at) 781 for (;;)
501 { 782 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
502 heap [k] = heap [k >> 1]; 788 heap [k] = heap [p];
503 ((W)heap [k])->active = k + 1; 789 ev_active (heap [k]) = k;
504 k >>= 1; 790 k = p;
505 } 791 }
506 792
507 heap [k] = w; 793 heap [k] = w;
508 ((W)heap [k])->active = k + 1; 794 ev_active (heap [k]) = k;
509
510} 795}
511 796
512static void 797/* away from the root */
798void inline_speed
513downheap (WT *heap, int N, int k) 799downheap (WT *heap, int N, int k)
514{ 800{
515 WT w = heap [k]; 801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
516 803
517 while (k < (N >> 1)) 804 for (;;)
518 { 805 {
519 int j = k << 1; 806 ev_tstamp minat;
807 WT *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0;
520 809
521 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 810 // find minimum child
811 if (expect_true (pos +3 < E))
522 ++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;
523 822
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
524 if (w->at <= heap [j]->at) 829 if (w->at <= minat)
525 break; 830 break;
526 831
527 heap [k] = heap [j]; 832 ev_active (*minpos) = k;
528 ((W)heap [k])->active = k + 1; 833 heap [k] = *minpos;
529 k = j; 834
835 k = minpos - heap;
530 } 836 }
531 837
532 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];
533 ((W)heap [k])->active = k + 1; 889 ((W)heap [k])->active = k;
534} 890
891 k = c;
892 }
535 893
536inline void 894 heap [k] = w;
895 ev_active (heap [k]) = k;
896}
897#endif
898
899void inline_size
537adjustheap (WT *heap, int N, int k, ev_tstamp at) 900adjustheap (WT *heap, int N, int k)
538{ 901{
539 ev_tstamp old_at = heap [k]->at; 902 upheap (heap, k);
540 heap [k]->at = at;
541
542 if (old_at < at)
543 downheap (heap, N, k); 903 downheap (heap, N, k);
544 else
545 upheap (heap, k);
546} 904}
547 905
548/*****************************************************************************/ 906/*****************************************************************************/
549 907
550typedef struct 908typedef struct
551{ 909{
552 WL head; 910 WL head;
553 sig_atomic_t volatile gotsig; 911 EV_ATOMIC_T gotsig;
554} ANSIG; 912} ANSIG;
555 913
556static ANSIG *signals; 914static ANSIG *signals;
557static int signalmax; 915static int signalmax;
558 916
559static int sigpipe [2]; 917static EV_ATOMIC_T gotsig;
560static sig_atomic_t volatile gotsig;
561static struct ev_io sigev;
562 918
563static void 919void inline_size
564signals_init (ANSIG *base, int count) 920signals_init (ANSIG *base, int count)
565{ 921{
566 while (count--) 922 while (count--)
567 { 923 {
568 base->head = 0; 924 base->head = 0;
… …
570 926
571 ++base; 927 ++base;
572 } 928 }
573} 929}
574 930
931/*****************************************************************************/
932
933void inline_speed
934fd_intern (int fd)
935{
936#ifdef _WIN32
937 int arg = 1;
938 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
939#else
940 fcntl (fd, F_SETFD, FD_CLOEXEC);
941 fcntl (fd, F_SETFL, O_NONBLOCK);
942#endif
943}
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
575static void 996static void
997pipecb (EV_P_ ev_io *iow, int revents)
998{
999#if EV_USE_EVENTFD
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 }
1011
1012 if (gotsig && ev_is_default_loop (EV_A))
1013 {
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
1036}
1037
1038/*****************************************************************************/
1039
1040static void
576sighandler (int signum) 1041ev_sighandler (int signum)
577{ 1042{
1043#if EV_MULTIPLICITY
1044 struct ev_loop *loop = &default_loop_struct;
1045#endif
1046
578#if WIN32 1047#if _WIN32
579 signal (signum, sighandler); 1048 signal (signum, ev_sighandler);
580#endif 1049#endif
581 1050
582 signals [signum - 1].gotsig = 1; 1051 signals [signum - 1].gotsig = 1;
583 1052 evpipe_write (EV_A_ &gotsig);
584 if (!gotsig)
585 {
586 int old_errno = errno;
587 gotsig = 1;
588#ifdef WIN32
589 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590#else
591 write (sigpipe [1], &signum, 1);
592#endif
593 errno = old_errno;
594 }
595} 1053}
596 1054
597void 1055void noinline
598ev_feed_signal_event (EV_P_ int signum) 1056ev_feed_signal_event (EV_P_ int signum)
599{ 1057{
600 WL w; 1058 WL w;
601 1059
602#if EV_MULTIPLICITY 1060#if EV_MULTIPLICITY
603 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 1061 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
604#endif 1062#endif
605 1063
606 --signum; 1064 --signum;
607 1065
608 if (signum < 0 || signum >= signalmax) 1066 if (signum < 0 || signum >= signalmax)
… …
612 1070
613 for (w = signals [signum].head; w; w = w->next) 1071 for (w = signals [signum].head; w; w = w->next)
614 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1072 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615} 1073}
616 1074
617static void
618sigcb (EV_P_ struct ev_io *iow, int revents)
619{
620 int signum;
621
622#ifdef WIN32
623 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624#else
625 read (sigpipe [0], &revents, 1);
626#endif
627 gotsig = 0;
628
629 for (signum = signalmax; signum--; )
630 if (signals [signum].gotsig)
631 ev_feed_signal_event (EV_A_ signum + 1);
632}
633
634static void
635siginit (EV_P)
636{
637#ifndef WIN32
638 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
639 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641 /* rather than sort out wether we really need nb, set it */
642 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644#endif
645
646 ev_io_set (&sigev, sigpipe [0], EV_READ);
647 ev_io_start (EV_A_ &sigev);
648 ev_unref (EV_A); /* child watcher should not keep loop alive */
649}
650
651/*****************************************************************************/ 1075/*****************************************************************************/
652 1076
653static struct ev_child *childs [PID_HASHSIZE]; 1077static WL childs [EV_PID_HASHSIZE];
654 1078
655#ifndef WIN32 1079#ifndef _WIN32
656 1080
657static 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}
658 1105
659#ifndef WCONTINUED 1106#ifndef WCONTINUED
660# define WCONTINUED 0 1107# define WCONTINUED 0
661#endif 1108#endif
662 1109
663static void 1110static void
664child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
665{
666 struct ev_child *w;
667
668 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
669 if (w->pid == pid || !w->pid)
670 {
671 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672 w->rpid = pid;
673 w->rstatus = status;
674 ev_feed_event (EV_A_ (W)w, EV_CHILD);
675 }
676}
677
678static void
679childcb (EV_P_ struct ev_signal *sw, int revents) 1111childcb (EV_P_ ev_signal *sw, int revents)
680{ 1112{
681 int pid, status; 1113 int pid, status;
682 1114
1115 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
683 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1116 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684 { 1117 if (!WCONTINUED
1118 || errno != EINVAL
1119 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1120 return;
1121
685 /* 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 */
686 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1124 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687 1125
688 child_reap (EV_A_ sw, pid, pid, status); 1126 child_reap (EV_A_ pid, pid, status);
1127 if (EV_PID_HASHSIZE > 1)
689 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 */
690 }
691} 1129}
692 1130
693#endif 1131#endif
694 1132
695/*****************************************************************************/ 1133/*****************************************************************************/
696 1134
1135#if EV_USE_PORT
1136# include "ev_port.c"
1137#endif
697#if EV_USE_KQUEUE 1138#if EV_USE_KQUEUE
698# include "ev_kqueue.c" 1139# include "ev_kqueue.c"
699#endif 1140#endif
700#if EV_USE_EPOLL 1141#if EV_USE_EPOLL
701# include "ev_epoll.c" 1142# include "ev_epoll.c"
… …
718{ 1159{
719 return EV_VERSION_MINOR; 1160 return EV_VERSION_MINOR;
720} 1161}
721 1162
722/* 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 */
723static int 1164int inline_size
724enable_secure (void) 1165enable_secure (void)
725{ 1166{
726#ifdef WIN32 1167#ifdef _WIN32
727 return 0; 1168 return 0;
728#else 1169#else
729 return getuid () != geteuid () 1170 return getuid () != geteuid ()
730 || getgid () != getegid (); 1171 || getgid () != getegid ();
731#endif 1172#endif
732} 1173}
733 1174
734int 1175unsigned int
735ev_method (EV_P) 1176ev_supported_backends (void)
736{ 1177{
737 return method; 1178 unsigned int flags = 0;
738}
739 1179
740static void 1180 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
741loop_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)
742{ 1191{
743 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)
744 { 1247 {
745#if EV_USE_MONOTONIC 1248#if EV_USE_MONOTONIC
746 { 1249 {
747 struct timespec ts; 1250 struct timespec ts;
748 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1251 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
749 have_monotonic = 1; 1252 have_monotonic = 1;
750 } 1253 }
751#endif 1254#endif
752 1255
753 ev_rt_now = ev_time (); 1256 ev_rt_now = ev_time ();
754 mn_now = get_clock (); 1257 mn_now = get_clock ();
755 now_floor = mn_now; 1258 now_floor = mn_now;
756 rtmn_diff = ev_rt_now - mn_now; 1259 rtmn_diff = ev_rt_now - mn_now;
757 1260
758 if (methods == EVMETHOD_AUTO) 1261 io_blocktime = 0.;
759 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"))
760 methods = atoi (getenv ("LIBEV_METHODS")); 1279 flags = atoi (getenv ("LIBEV_FLAGS"));
761 else
762 methods = EVMETHOD_ANY;
763 1280
764 method = 0; 1281 if (!(flags & 0x0000ffffU))
765#if EV_USE_WIN32 1282 flags |= ev_recommended_backends ();
766 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1283
1284#if EV_USE_PORT
1285 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
767#endif 1286#endif
768#if EV_USE_KQUEUE 1287#if EV_USE_KQUEUE
769 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1288 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770#endif 1289#endif
771#if EV_USE_EPOLL 1290#if EV_USE_EPOLL
772 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1291 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773#endif 1292#endif
774#if EV_USE_POLL 1293#if EV_USE_POLL
775 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1294 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776#endif 1295#endif
777#if EV_USE_SELECT 1296#if EV_USE_SELECT
778 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1297 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779#endif 1298#endif
780 1299
781 ev_init (&sigev, sigcb); 1300 ev_init (&pipeev, pipecb);
782 ev_set_priority (&sigev, EV_MAXPRI); 1301 ev_set_priority (&pipeev, EV_MAXPRI);
783 } 1302 }
784} 1303}
785 1304
786void 1305static void noinline
787loop_destroy (EV_P) 1306loop_destroy (EV_P)
788{ 1307{
789 int i; 1308 int i;
790 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
791#if EV_USE_WIN32 1327#if EV_USE_INOTIFY
792 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 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);
793#endif 1337#endif
794#if EV_USE_KQUEUE 1338#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1339 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796#endif 1340#endif
797#if EV_USE_EPOLL 1341#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1342 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799#endif 1343#endif
800#if EV_USE_POLL 1344#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1345 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802#endif 1346#endif
803#if EV_USE_SELECT 1347#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1348 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805#endif 1349#endif
806 1350
807 for (i = NUMPRI; i--; ) 1351 for (i = NUMPRI; i--; )
1352 {
808 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;
809 1360
810 /* have to use the microsoft-never-gets-it-right macro */ 1361 /* have to use the microsoft-never-gets-it-right macro */
811 array_free_microshit (fdchange); 1362 array_free (fdchange, EMPTY);
812 array_free_microshit (timer); 1363 array_free (timer, EMPTY);
813#if EV_PERIODICS 1364#if EV_PERIODIC_ENABLE
814 array_free_microshit (periodic); 1365 array_free (periodic, EMPTY);
815#endif 1366#endif
816 array_free_microshit (idle); 1367#if EV_FORK_ENABLE
817 array_free_microshit (prepare); 1368 array_free (fork, EMPTY);
818 array_free_microshit (check); 1369#endif
1370 array_free (prepare, EMPTY);
1371 array_free (check, EMPTY);
1372#if EV_ASYNC_ENABLE
1373 array_free (async, EMPTY);
1374#endif
819 1375
820 method = 0; 1376 backend = 0;
821} 1377}
822 1378
823static void 1379#if EV_USE_INOTIFY
1380void inline_size infy_fork (EV_P);
1381#endif
1382
1383void inline_size
824loop_fork (EV_P) 1384loop_fork (EV_P)
825{ 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
826#if EV_USE_EPOLL 1392#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1393 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828#endif 1394#endif
829#if EV_USE_KQUEUE 1395#if EV_USE_INOTIFY
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1396 infy_fork (EV_A);
831#endif 1397#endif
832 1398
833 if (ev_is_active (&sigev)) 1399 if (ev_is_active (&pipeev))
834 { 1400 {
835 /* 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
836 1407
837 ev_ref (EV_A); 1408 ev_ref (EV_A);
838 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 {
839 close (sigpipe [0]); 1418 close (evpipe [0]);
840 close (sigpipe [1]); 1419 close (evpipe [1]);
1420 }
841 1421
842 while (pipe (sigpipe))
843 syserr ("(libev) error creating pipe");
844
845 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);
846 } 1425 }
847 1426
848 postfork = 0; 1427 postfork = 0;
849} 1428}
850 1429
851#if EV_MULTIPLICITY 1430#if EV_MULTIPLICITY
852struct ev_loop * 1431struct ev_loop *
853ev_loop_new (int methods) 1432ev_loop_new (unsigned int flags)
854{ 1433{
855 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));
856 1435
857 memset (loop, 0, sizeof (struct ev_loop)); 1436 memset (loop, 0, sizeof (struct ev_loop));
858 1437
859 loop_init (EV_A_ methods); 1438 loop_init (EV_A_ flags);
860 1439
861 if (ev_method (EV_A)) 1440 if (ev_backend (EV_A))
862 return loop; 1441 return loop;
863 1442
864 return 0; 1443 return 0;
865} 1444}
866 1445
… …
872} 1451}
873 1452
874void 1453void
875ev_loop_fork (EV_P) 1454ev_loop_fork (EV_P)
876{ 1455{
877 postfork = 1; 1456 postfork = 1; /* must be in line with ev_default_fork */
878} 1457}
879
880#endif 1458#endif
881 1459
882#if EV_MULTIPLICITY 1460#if EV_MULTIPLICITY
883struct ev_loop * 1461struct ev_loop *
1462ev_default_loop_init (unsigned int flags)
884#else 1463#else
885int 1464int
1465ev_default_loop (unsigned int flags)
886#endif 1466#endif
887ev_default_loop (int methods)
888{ 1467{
889 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe))
891 return 0;
892
893 if (!default_loop) 1468 if (!ev_default_loop_ptr)
894 { 1469 {
895#if EV_MULTIPLICITY 1470#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct; 1471 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897#else 1472#else
898 default_loop = 1; 1473 ev_default_loop_ptr = 1;
899#endif 1474#endif
900 1475
901 loop_init (EV_A_ methods); 1476 loop_init (EV_A_ flags);
902 1477
903 if (ev_method (EV_A)) 1478 if (ev_backend (EV_A))
904 { 1479 {
905 siginit (EV_A);
906
907#ifndef WIN32 1480#ifndef _WIN32
908 ev_signal_init (&childev, childcb, SIGCHLD); 1481 ev_signal_init (&childev, childcb, SIGCHLD);
909 ev_set_priority (&childev, EV_MAXPRI); 1482 ev_set_priority (&childev, EV_MAXPRI);
910 ev_signal_start (EV_A_ &childev); 1483 ev_signal_start (EV_A_ &childev);
911 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1484 ev_unref (EV_A); /* child watcher should not keep loop alive */
912#endif 1485#endif
913 } 1486 }
914 else 1487 else
915 default_loop = 0; 1488 ev_default_loop_ptr = 0;
916 } 1489 }
917 1490
918 return default_loop; 1491 return ev_default_loop_ptr;
919} 1492}
920 1493
921void 1494void
922ev_default_destroy (void) 1495ev_default_destroy (void)
923{ 1496{
924#if EV_MULTIPLICITY 1497#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop; 1498 struct ev_loop *loop = ev_default_loop_ptr;
926#endif 1499#endif
927 1500
928#ifndef WIN32 1501#ifndef _WIN32
929 ev_ref (EV_A); /* child watcher */ 1502 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev); 1503 ev_signal_stop (EV_A_ &childev);
931#endif 1504#endif
932 1505
933 ev_ref (EV_A); /* signal watcher */
934 ev_io_stop (EV_A_ &sigev);
935
936 close (sigpipe [0]); sigpipe [0] = 0;
937 close (sigpipe [1]); sigpipe [1] = 0;
938
939 loop_destroy (EV_A); 1506 loop_destroy (EV_A);
940} 1507}
941 1508
942void 1509void
943ev_default_fork (void) 1510ev_default_fork (void)
944{ 1511{
945#if EV_MULTIPLICITY 1512#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop; 1513 struct ev_loop *loop = ev_default_loop_ptr;
947#endif 1514#endif
948 1515
949 if (method) 1516 if (backend)
950 postfork = 1; 1517 postfork = 1; /* must be in line with ev_loop_fork */
951} 1518}
952 1519
953/*****************************************************************************/ 1520/*****************************************************************************/
954 1521
955static int 1522void
956any_pending (EV_P) 1523ev_invoke (EV_P_ void *w, int revents)
957{ 1524{
958 int pri; 1525 EV_CB_INVOKE ((W)w, revents);
959
960 for (pri = NUMPRI; pri--; )
961 if (pendingcnt [pri])
962 return 1;
963
964 return 0;
965} 1526}
966 1527
967static void 1528void inline_speed
968call_pending (EV_P) 1529call_pending (EV_P)
969{ 1530{
970 int pri; 1531 int pri;
971 1532
972 for (pri = NUMPRI; pri--; ) 1533 for (pri = NUMPRI; pri--; )
973 while (pendingcnt [pri]) 1534 while (pendingcnt [pri])
974 { 1535 {
975 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1536 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976 1537
977 if (p->w) 1538 if (expect_true (p->w))
978 { 1539 {
1540 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1541
979 p->w->pending = 0; 1542 p->w->pending = 0;
980 EV_CB_INVOKE (p->w, p->events); 1543 EV_CB_INVOKE (p->w, p->events);
981 } 1544 }
982 } 1545 }
983} 1546}
984 1547
985static 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
986timers_reify (EV_P) 1572timers_reify (EV_P)
987{ 1573{
988 while (timercnt && ((WT)timers [0])->at <= mn_now) 1574 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
989 { 1575 {
990 struct ev_timer *w = timers [0]; 1576 ev_timer *w = (ev_timer *)timers [HEAP0];
991 1577
992 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1578 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
993 1579
994 /* first reschedule or stop timer */ 1580 /* first reschedule or stop timer */
995 if (w->repeat) 1581 if (w->repeat)
996 { 1582 {
997 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.));
998 1584
999 ((WT)w)->at += w->repeat; 1585 ev_at (w) += w->repeat;
1000 if (((WT)w)->at < mn_now) 1586 if (ev_at (w) < mn_now)
1001 ((WT)w)->at = mn_now; 1587 ev_at (w) = mn_now;
1002 1588
1003 downheap ((WT *)timers, timercnt, 0); 1589 downheap (timers, timercnt, HEAP0);
1004 } 1590 }
1005 else 1591 else
1006 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1592 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1007 1593
1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1594 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009 } 1595 }
1010} 1596}
1011 1597
1012#if EV_PERIODICS 1598#if EV_PERIODIC_ENABLE
1013static void 1599void inline_size
1014periodics_reify (EV_P) 1600periodics_reify (EV_P)
1015{ 1601{
1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1602 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1017 { 1603 {
1018 struct ev_periodic *w = periodics [0]; 1604 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1019 1605
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1606 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1021 1607
1022 /* first reschedule or stop timer */ 1608 /* first reschedule or stop timer */
1023 if (w->reschedule_cb) 1609 if (w->reschedule_cb)
1024 { 1610 {
1025 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);
1026
1027 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));
1028 downheap ((WT *)periodics, periodiccnt, 0); 1613 downheap (periodics, periodiccnt, 1);
1029 } 1614 }
1030 else if (w->interval) 1615 else if (w->interval)
1031 { 1616 {
1032 ((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;
1033 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));
1034 downheap ((WT *)periodics, periodiccnt, 0); 1620 downheap (periodics, periodiccnt, HEAP0);
1035 } 1621 }
1036 else 1622 else
1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1623 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1038 1624
1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1625 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040 } 1626 }
1041} 1627}
1042 1628
1043static void 1629static void noinline
1044periodics_reschedule (EV_P) 1630periodics_reschedule (EV_P)
1045{ 1631{
1046 int i; 1632 int i;
1047 1633
1048 /* adjust periodics after time jump */ 1634 /* adjust periodics after time jump */
1049 for (i = 0; i < periodiccnt; ++i) 1635 for (i = 1; i <= periodiccnt; ++i)
1050 { 1636 {
1051 struct ev_periodic *w = periodics [i]; 1637 ev_periodic *w = (ev_periodic *)periodics [i];
1052 1638
1053 if (w->reschedule_cb) 1639 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1640 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1055 else if (w->interval) 1641 else if (w->interval)
1056 ((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;
1057 } 1643 }
1058 1644
1059 /* now rebuild the heap */ 1645 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; ) 1646 for (i = periodiccnt >> 1; --i; )
1061 downheap ((WT *)periodics, periodiccnt, i); 1647 downheap (periodics, periodiccnt, i + HEAP0);
1062} 1648}
1063#endif 1649#endif
1064 1650
1065inline int 1651void inline_speed
1066time_update_monotonic (EV_P) 1652time_update (EV_P_ ev_tstamp max_block)
1067{ 1653{
1654 int i;
1655
1656#if EV_USE_MONOTONIC
1657 if (expect_true (have_monotonic))
1658 {
1659 ev_tstamp odiff = rtmn_diff;
1660
1068 mn_now = get_clock (); 1661 mn_now = get_clock ();
1069 1662
1663 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1664 /* interpolate in the meantime */
1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1665 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071 { 1666 {
1072 ev_rt_now = rtmn_diff + mn_now; 1667 ev_rt_now = rtmn_diff + mn_now;
1073 return 0; 1668 return;
1074 } 1669 }
1075 else 1670
1076 {
1077 now_floor = mn_now; 1671 now_floor = mn_now;
1078 ev_rt_now = ev_time (); 1672 ev_rt_now = ev_time ();
1079 return 1;
1080 }
1081}
1082 1673
1083static void 1674 /* loop a few times, before making important decisions.
1084time_update (EV_P) 1675 * on the choice of "4": one iteration isn't enough,
1085{ 1676 * in case we get preempted during the calls to
1086 int i; 1677 * ev_time and get_clock. a second call is almost guaranteed
1087 1678 * to succeed in that case, though. and looping a few more times
1088#if EV_USE_MONOTONIC 1679 * doesn't hurt either as we only do this on time-jumps or
1089 if (expect_true (have_monotonic)) 1680 * in the unlikely event of having been preempted here.
1090 { 1681 */
1091 if (time_update_monotonic (EV_A)) 1682 for (i = 4; --i; )
1092 { 1683 {
1093 ev_tstamp odiff = rtmn_diff;
1094
1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1096 {
1097 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1098 1685
1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1686 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1100 return; /* all is well */ 1687 return; /* all is well */
1101 1688
1102 ev_rt_now = ev_time (); 1689 ev_rt_now = ev_time ();
1103 mn_now = get_clock (); 1690 mn_now = get_clock ();
1104 now_floor = mn_now; 1691 now_floor = mn_now;
1105 } 1692 }
1106 1693
1107# 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
1108 periodics_reschedule (EV_A); 1708 periodics_reschedule (EV_A);
1109# endif 1709#endif
1110 /* 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 */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1711 for (i = 1; i <= timercnt; ++i)
1712 ev_at (timers [i]) += ev_rt_now - mn_now;
1112 } 1713 }
1113 }
1114 else
1115#endif
1116 {
1117 ev_rt_now = ev_time ();
1118
1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1120 {
1121#if EV_PERIODICS
1122 periodics_reschedule (EV_A);
1123#endif
1124
1125 /* adjust timers. this is easy, as the offset is the same for all */
1126 for (i = 0; i < timercnt; ++i)
1127 ((WT)timers [i])->at += ev_rt_now - mn_now;
1128 }
1129 1714
1130 mn_now = ev_rt_now; 1715 mn_now = ev_rt_now;
1131 } 1716 }
1132} 1717}
1133 1718
… …
1146static int loop_done; 1731static int loop_done;
1147 1732
1148void 1733void
1149ev_loop (EV_P_ int flags) 1734ev_loop (EV_P_ int flags)
1150{ 1735{
1151 double block; 1736 loop_done = EVUNLOOP_CANCEL;
1152 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 */
1153 1739
1154 do 1740 do
1155 { 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
1156 /* queue check watchers (and execute them) */ 1761 /* queue prepare watchers (and execute them) */
1157 if (expect_false (preparecnt)) 1762 if (expect_false (preparecnt))
1158 { 1763 {
1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1764 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1160 call_pending (EV_A); 1765 call_pending (EV_A);
1161 } 1766 }
1162 1767
1768 if (expect_false (!activecnt))
1769 break;
1770
1163 /* we might have forked, so reify kernel state if necessary */ 1771 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork)) 1772 if (expect_false (postfork))
1165 loop_fork (EV_A); 1773 loop_fork (EV_A);
1166 1774
1167 /* update fd-related kernel structures */ 1775 /* update fd-related kernel structures */
1168 fd_reify (EV_A); 1776 fd_reify (EV_A);
1169 1777
1170 /* calculate blocking time */ 1778 /* calculate blocking time */
1779 {
1780 ev_tstamp waittime = 0.;
1781 ev_tstamp sleeptime = 0.;
1171 1782
1172 /* we only need this for !monotonic clock or timers, but as we basically 1783 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1173 always have timers, we just calculate it always */
1174#if EV_USE_MONOTONIC
1175 if (expect_true (have_monotonic))
1176 time_update_monotonic (EV_A);
1177 else
1178#endif
1179 { 1784 {
1180 ev_rt_now = ev_time (); 1785 /* update time to cancel out callback processing overhead */
1181 mn_now = ev_rt_now; 1786 time_update (EV_A_ 1e100);
1182 }
1183 1787
1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
1185 block = 0.;
1186 else
1187 {
1188 block = MAX_BLOCKTIME; 1788 waittime = MAX_BLOCKTIME;
1189 1789
1190 if (timercnt) 1790 if (timercnt)
1191 { 1791 {
1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1792 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1193 if (block > to) block = to; 1793 if (waittime > to) waittime = to;
1194 } 1794 }
1195 1795
1196#if EV_PERIODICS 1796#if EV_PERIODIC_ENABLE
1197 if (periodiccnt) 1797 if (periodiccnt)
1198 { 1798 {
1199 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;
1200 if (block > to) block = to; 1800 if (waittime > to) waittime = to;
1201 } 1801 }
1202#endif 1802#endif
1203 1803
1204 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 }
1205 } 1817 }
1206 1818
1207 method_poll (EV_A_ block); 1819 ++loop_count;
1820 backend_poll (EV_A_ waittime);
1208 1821
1209 /* update ev_rt_now, do magic */ 1822 /* update ev_rt_now, do magic */
1210 time_update (EV_A); 1823 time_update (EV_A_ waittime + sleeptime);
1824 }
1211 1825
1212 /* queue pending timers and reschedule them */ 1826 /* queue pending timers and reschedule them */
1213 timers_reify (EV_A); /* relative timers called last */ 1827 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS 1828#if EV_PERIODIC_ENABLE
1215 periodics_reify (EV_A); /* absolute timers called first */ 1829 periodics_reify (EV_A); /* absolute timers called first */
1216#endif 1830#endif
1217 1831
1832#if EV_IDLE_ENABLE
1218 /* queue idle watchers unless io or timers are pending */ 1833 /* queue idle watchers unless other events are pending */
1219 if (idlecnt && !any_pending (EV_A)) 1834 idle_reify (EV_A);
1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1835#endif
1221 1836
1222 /* queue check watchers, to be executed first */ 1837 /* queue check watchers, to be executed first */
1223 if (checkcnt) 1838 if (expect_false (checkcnt))
1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1839 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225 1840
1226 call_pending (EV_A); 1841 call_pending (EV_A);
1227 } 1842 }
1228 while (activecnt && !loop_done); 1843 while (expect_true (
1844 activecnt
1845 && !loop_done
1846 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1847 ));
1229 1848
1230 if (loop_done != 2) 1849 if (loop_done == EVUNLOOP_ONE)
1231 loop_done = 0; 1850 loop_done = EVUNLOOP_CANCEL;
1232} 1851}
1233 1852
1234void 1853void
1235ev_unloop (EV_P_ int how) 1854ev_unloop (EV_P_ int how)
1236{ 1855{
1237 loop_done = how; 1856 loop_done = how;
1238} 1857}
1239 1858
1240/*****************************************************************************/ 1859/*****************************************************************************/
1241 1860
1242inline void 1861void inline_size
1243wlist_add (WL *head, WL elem) 1862wlist_add (WL *head, WL elem)
1244{ 1863{
1245 elem->next = *head; 1864 elem->next = *head;
1246 *head = elem; 1865 *head = elem;
1247} 1866}
1248 1867
1249inline void 1868void inline_size
1250wlist_del (WL *head, WL elem) 1869wlist_del (WL *head, WL elem)
1251{ 1870{
1252 while (*head) 1871 while (*head)
1253 { 1872 {
1254 if (*head == elem) 1873 if (*head == elem)
… …
1259 1878
1260 head = &(*head)->next; 1879 head = &(*head)->next;
1261 } 1880 }
1262} 1881}
1263 1882
1264inline void 1883void inline_speed
1265ev_clear_pending (EV_P_ W w) 1884clear_pending (EV_P_ W w)
1266{ 1885{
1267 if (w->pending) 1886 if (w->pending)
1268 { 1887 {
1269 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1888 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270 w->pending = 0; 1889 w->pending = 0;
1271 } 1890 }
1272} 1891}
1273 1892
1274inline 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
1275ev_start (EV_P_ W w, int active) 1920ev_start (EV_P_ W w, int active)
1276{ 1921{
1277 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1922 pri_adjust (EV_A_ w);
1278 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279
1280 w->active = active; 1923 w->active = active;
1281 ev_ref (EV_A); 1924 ev_ref (EV_A);
1282} 1925}
1283 1926
1284inline void 1927void inline_size
1285ev_stop (EV_P_ W w) 1928ev_stop (EV_P_ W w)
1286{ 1929{
1287 ev_unref (EV_A); 1930 ev_unref (EV_A);
1288 w->active = 0; 1931 w->active = 0;
1289} 1932}
1290 1933
1291/*****************************************************************************/ 1934/*****************************************************************************/
1292 1935
1293void 1936void noinline
1294ev_io_start (EV_P_ struct ev_io *w) 1937ev_io_start (EV_P_ ev_io *w)
1295{ 1938{
1296 int fd = w->fd; 1939 int fd = w->fd;
1297 1940
1298 if (ev_is_active (w)) 1941 if (expect_false (ev_is_active (w)))
1299 return; 1942 return;
1300 1943
1301 assert (("ev_io_start called with negative fd", fd >= 0)); 1944 assert (("ev_io_start called with negative fd", fd >= 0));
1302 1945
1303 ev_start (EV_A_ (W)w, 1); 1946 ev_start (EV_A_ (W)w, 1);
1304 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1947 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1305 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1948 wlist_add (&anfds[fd].head, (WL)w);
1306 1949
1307 fd_change (EV_A_ fd); 1950 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1951 w->events &= ~EV_IOFDSET;
1308} 1952}
1309 1953
1310void 1954void noinline
1311ev_io_stop (EV_P_ struct ev_io *w) 1955ev_io_stop (EV_P_ ev_io *w)
1312{ 1956{
1313 ev_clear_pending (EV_A_ (W)w); 1957 clear_pending (EV_A_ (W)w);
1314 if (!ev_is_active (w)) 1958 if (expect_false (!ev_is_active (w)))
1315 return; 1959 return;
1316 1960
1317 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));
1318 1962
1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1963 wlist_del (&anfds[w->fd].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1964 ev_stop (EV_A_ (W)w);
1321 1965
1322 fd_change (EV_A_ w->fd); 1966 fd_change (EV_A_ w->fd, 1);
1323} 1967}
1324 1968
1325void 1969void noinline
1326ev_timer_start (EV_P_ struct ev_timer *w) 1970ev_timer_start (EV_P_ ev_timer *w)
1971{
1972 if (expect_false (ev_is_active (w)))
1973 return;
1974
1975 ev_at (w) += mn_now;
1976
1977 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1978
1979 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1980 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1981 timers [ev_active (w)] = (WT)w;
1982 upheap (timers, ev_active (w));
1983
1984 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1985}
1986
1987void noinline
1988ev_timer_stop (EV_P_ ev_timer *w)
1989{
1990 clear_pending (EV_A_ (W)w);
1991 if (expect_false (!ev_is_active (w)))
1992 return;
1993
1994 {
1995 int active = ev_active (w);
1996
1997 assert (("internal timer heap corruption", timers [active] == (WT)w));
1998
1999 if (expect_true (active < timercnt + HEAP0 - 1))
2000 {
2001 timers [active] = timers [timercnt + HEAP0 - 1];
2002 adjustheap (timers, timercnt, active);
2003 }
2004
2005 --timercnt;
2006 }
2007
2008 ev_at (w) -= mn_now;
2009
2010 ev_stop (EV_A_ (W)w);
2011}
2012
2013void noinline
2014ev_timer_again (EV_P_ ev_timer *w)
1327{ 2015{
1328 if (ev_is_active (w)) 2016 if (ev_is_active (w))
1329 return;
1330
1331 ((WT)w)->at += mn_now;
1332
1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334
1335 ev_start (EV_A_ (W)w, ++timercnt);
1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1337 timers [timercnt - 1] = w;
1338 upheap ((WT *)timers, timercnt - 1);
1339
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341}
1342
1343void
1344ev_timer_stop (EV_P_ struct ev_timer *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w))
1348 return;
1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1352 if (((W)w)->active < timercnt--)
1353 {
1354 timers [((W)w)->active - 1] = timers [timercnt];
1355 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356 }
1357
1358 ((WT)w)->at -= mn_now;
1359
1360 ev_stop (EV_A_ (W)w);
1361}
1362
1363void
1364ev_timer_again (EV_P_ struct ev_timer *w)
1365{
1366 if (ev_is_active (w))
1367 { 2017 {
1368 if (w->repeat) 2018 if (w->repeat)
1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 2019 {
2020 ev_at (w) = mn_now + w->repeat;
2021 adjustheap (timers, timercnt, ev_active (w));
2022 }
1370 else 2023 else
1371 ev_timer_stop (EV_A_ w); 2024 ev_timer_stop (EV_A_ w);
1372 } 2025 }
1373 else if (w->repeat) 2026 else if (w->repeat)
2027 {
2028 ev_at (w) = w->repeat;
1374 ev_timer_start (EV_A_ w); 2029 ev_timer_start (EV_A_ w);
2030 }
1375} 2031}
1376 2032
1377#if EV_PERIODICS 2033#if EV_PERIODIC_ENABLE
1378void 2034void noinline
1379ev_periodic_start (EV_P_ struct ev_periodic *w) 2035ev_periodic_start (EV_P_ ev_periodic *w)
1380{ 2036{
1381 if (ev_is_active (w)) 2037 if (expect_false (ev_is_active (w)))
1382 return; 2038 return;
1383 2039
1384 if (w->reschedule_cb) 2040 if (w->reschedule_cb)
1385 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2041 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1386 else if (w->interval) 2042 else if (w->interval)
1387 { 2043 {
1388 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.));
1389 /* 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 */
1390 ((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;
1391 } 2047 }
2048 else
2049 ev_at (w) = w->offset;
1392 2050
1393 ev_start (EV_A_ (W)w, ++periodiccnt); 2051 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1394 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2052 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1395 periodics [periodiccnt - 1] = w; 2053 periodics [ev_active (w)] = (WT)w;
1396 upheap ((WT *)periodics, periodiccnt - 1); 2054 upheap (periodics, ev_active (w));
1397 2055
1398 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2056 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1399} 2057}
1400 2058
1401void 2059void noinline
1402ev_periodic_stop (EV_P_ struct ev_periodic *w) 2060ev_periodic_stop (EV_P_ ev_periodic *w)
1403{ 2061{
1404 ev_clear_pending (EV_A_ (W)w); 2062 clear_pending (EV_A_ (W)w);
1405 if (!ev_is_active (w)) 2063 if (expect_false (!ev_is_active (w)))
1406 return; 2064 return;
1407 2065
2066 {
2067 int active = ev_active (w);
2068
1408 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2069 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1409 2070
1410 if (((W)w)->active < periodiccnt--) 2071 if (expect_true (active < periodiccnt + HEAP0 - 1))
1411 { 2072 {
1412 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2073 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1413 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2074 adjustheap (periodics, periodiccnt, active);
1414 } 2075 }
2076
2077 --periodiccnt;
2078 }
1415 2079
1416 ev_stop (EV_A_ (W)w); 2080 ev_stop (EV_A_ (W)w);
1417} 2081}
1418 2082
1419void 2083void noinline
1420ev_periodic_again (EV_P_ struct ev_periodic *w) 2084ev_periodic_again (EV_P_ ev_periodic *w)
1421{ 2085{
1422 /* TODO: use adjustheap and recalculation */ 2086 /* TODO: use adjustheap and recalculation */
1423 ev_periodic_stop (EV_A_ w); 2087 ev_periodic_stop (EV_A_ w);
1424 ev_periodic_start (EV_A_ w); 2088 ev_periodic_start (EV_A_ w);
1425} 2089}
1426#endif 2090#endif
1427 2091
1428void
1429ev_idle_start (EV_P_ struct ev_idle *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++idlecnt);
1435 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436 idles [idlecnt - 1] = w;
1437}
1438
1439void
1440ev_idle_stop (EV_P_ struct ev_idle *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 idles [((W)w)->active - 1] = idles [--idlecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_prepare_start (EV_P_ struct ev_prepare *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++preparecnt);
1457 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458 prepares [preparecnt - 1] = w;
1459}
1460
1461void
1462ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471
1472void
1473ev_check_start (EV_P_ struct ev_check *w)
1474{
1475 if (ev_is_active (w))
1476 return;
1477
1478 ev_start (EV_A_ (W)w, ++checkcnt);
1479 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480 checks [checkcnt - 1] = w;
1481}
1482
1483void
1484ev_check_stop (EV_P_ struct ev_check *w)
1485{
1486 ev_clear_pending (EV_A_ (W)w);
1487 if (!ev_is_active (w))
1488 return;
1489
1490 checks [((W)w)->active - 1] = checks [--checkcnt];
1491 ev_stop (EV_A_ (W)w);
1492}
1493
1494#ifndef SA_RESTART 2092#ifndef SA_RESTART
1495# define SA_RESTART 0 2093# define SA_RESTART 0
1496#endif 2094#endif
1497 2095
1498void 2096void noinline
1499ev_signal_start (EV_P_ struct ev_signal *w) 2097ev_signal_start (EV_P_ ev_signal *w)
1500{ 2098{
1501#if EV_MULTIPLICITY 2099#if EV_MULTIPLICITY
1502 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));
1503#endif 2101#endif
1504 if (ev_is_active (w)) 2102 if (expect_false (ev_is_active (w)))
1505 return; 2103 return;
1506 2104
1507 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));
1508 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
1509 ev_start (EV_A_ (W)w, 1); 2123 ev_start (EV_A_ (W)w, 1);
1510 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2124 wlist_add (&signals [w->signum - 1].head, (WL)w);
1512 2125
1513 if (!((WL)w)->next) 2126 if (!((WL)w)->next)
1514 { 2127 {
1515#if WIN32 2128#if _WIN32
1516 signal (w->signum, sighandler); 2129 signal (w->signum, ev_sighandler);
1517#else 2130#else
1518 struct sigaction sa; 2131 struct sigaction sa;
1519 sa.sa_handler = sighandler; 2132 sa.sa_handler = ev_sighandler;
1520 sigfillset (&sa.sa_mask); 2133 sigfillset (&sa.sa_mask);
1521 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 */
1522 sigaction (w->signum, &sa, 0); 2135 sigaction (w->signum, &sa, 0);
1523#endif 2136#endif
1524 } 2137 }
1525} 2138}
1526 2139
1527void 2140void noinline
1528ev_signal_stop (EV_P_ struct ev_signal *w) 2141ev_signal_stop (EV_P_ ev_signal *w)
1529{ 2142{
1530 ev_clear_pending (EV_A_ (W)w); 2143 clear_pending (EV_A_ (W)w);
1531 if (!ev_is_active (w)) 2144 if (expect_false (!ev_is_active (w)))
1532 return; 2145 return;
1533 2146
1534 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2147 wlist_del (&signals [w->signum - 1].head, (WL)w);
1535 ev_stop (EV_A_ (W)w); 2148 ev_stop (EV_A_ (W)w);
1536 2149
1537 if (!signals [w->signum - 1].head) 2150 if (!signals [w->signum - 1].head)
1538 signal (w->signum, SIG_DFL); 2151 signal (w->signum, SIG_DFL);
1539} 2152}
1540 2153
1541void 2154void
1542ev_child_start (EV_P_ struct ev_child *w) 2155ev_child_start (EV_P_ ev_child *w)
1543{ 2156{
1544#if EV_MULTIPLICITY 2157#if EV_MULTIPLICITY
1545 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));
1546#endif 2159#endif
1547 if (ev_is_active (w)) 2160 if (expect_false (ev_is_active (w)))
1548 return; 2161 return;
1549 2162
1550 ev_start (EV_A_ (W)w, 1); 2163 ev_start (EV_A_ (W)w, 1);
1551 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2164 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1552} 2165}
1553 2166
1554void 2167void
1555ev_child_stop (EV_P_ struct ev_child *w) 2168ev_child_stop (EV_P_ ev_child *w)
1556{ 2169{
1557 ev_clear_pending (EV_A_ (W)w); 2170 clear_pending (EV_A_ (W)w);
1558 if (!ev_is_active (w)) 2171 if (expect_false (!ev_is_active (w)))
1559 return; 2172 return;
1560 2173
1561 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2174 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1562 ev_stop (EV_A_ (W)w); 2175 ev_stop (EV_A_ (W)w);
1563} 2176}
1564 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
1565/*****************************************************************************/ 2675/*****************************************************************************/
1566 2676
1567struct ev_once 2677struct ev_once
1568{ 2678{
1569 struct ev_io io; 2679 ev_io io;
1570 struct ev_timer to; 2680 ev_timer to;
1571 void (*cb)(int revents, void *arg); 2681 void (*cb)(int revents, void *arg);
1572 void *arg; 2682 void *arg;
1573}; 2683};
1574 2684
1575static void 2685static void
… …
1584 2694
1585 cb (revents, arg); 2695 cb (revents, arg);
1586} 2696}
1587 2697
1588static void 2698static void
1589once_cb_io (EV_P_ struct ev_io *w, int revents) 2699once_cb_io (EV_P_ ev_io *w, int revents)
1590{ 2700{
1591 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);
1592} 2702}
1593 2703
1594static void 2704static void
1595once_cb_to (EV_P_ struct ev_timer *w, int revents) 2705once_cb_to (EV_P_ ev_timer *w, int revents)
1596{ 2706{
1597 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);
1598} 2708}
1599 2709
1600void 2710void
1601ev_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)
1602{ 2712{
1603 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));
1604 2714
1605 if (!once) 2715 if (expect_false (!once))
2716 {
1606 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2717 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607 else 2718 return;
1608 { 2719 }
2720
1609 once->cb = cb; 2721 once->cb = cb;
1610 once->arg = arg; 2722 once->arg = arg;
1611 2723
1612 ev_init (&once->io, once_cb_io); 2724 ev_init (&once->io, once_cb_io);
1613 if (fd >= 0) 2725 if (fd >= 0)
1614 { 2726 {
1615 ev_io_set (&once->io, fd, events); 2727 ev_io_set (&once->io, fd, events);
1616 ev_io_start (EV_A_ &once->io); 2728 ev_io_start (EV_A_ &once->io);
1617 } 2729 }
1618 2730
1619 ev_init (&once->to, once_cb_to); 2731 ev_init (&once->to, once_cb_to);
1620 if (timeout >= 0.) 2732 if (timeout >= 0.)
1621 { 2733 {
1622 ev_timer_set (&once->to, timeout, 0.); 2734 ev_timer_set (&once->to, timeout, 0.);
1623 ev_timer_start (EV_A_ &once->to); 2735 ev_timer_start (EV_A_ &once->to);
1624 }
1625 } 2736 }
1626} 2737}
2738
2739#if EV_MULTIPLICITY
2740 #include "ev_wrap.h"
2741#endif
1627 2742
1628#ifdef __cplusplus 2743#ifdef __cplusplus
1629} 2744}
1630#endif 2745#endif
1631 2746

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