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Comparing libev/ev.c (file contents):
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC vs.
Revision 1.241 by root, Fri May 9 13:57:00 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 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 49# include "config.h"
50# endif
33 51
34# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
55# endif
56# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
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
37# endif 66# endif
38 67
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
41# endif 74# endif
42 75
43# if HAVE_POLL && HAVE_POLL_H 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
45# endif 82# endif
46 83
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
49# endif 90# endif
50 91
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
52# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
53# 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
54 115
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
55#endif 132#endif
56 133
57#include <math.h> 134#include <math.h>
58#include <stdlib.h> 135#include <stdlib.h>
59#include <fcntl.h> 136#include <fcntl.h>
… …
66#include <sys/types.h> 143#include <sys/types.h>
67#include <time.h> 144#include <time.h>
68 145
69#include <signal.h> 146#include <signal.h>
70 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
71#ifndef WIN32 154#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 155# include <sys/time.h>
74# include <sys/wait.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
75#endif 163# endif
76/**/ 164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
77 167
78#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
80#endif 178#endif
81 179
82#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
84#endif 182#endif
85 183
86#ifndef EV_USE_POLL 184#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
88#endif 190#endif
89 191
90#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
91# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
92#endif 198#endif
93 199
94#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
96#endif 202#endif
97 203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
98#ifndef EV_USE_WIN32 208#ifndef EV_USE_INOTIFY
99# ifdef WIN32 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1 210# define EV_USE_INOTIFY 1
103# else 211# else
104# define EV_USE_WIN32 0 212# define EV_USE_INOTIFY 0
105# endif 213# endif
106#endif 214#endif
107 215
108#ifndef EV_USE_REALTIME 216#ifndef EV_PID_HASHSIZE
109# define EV_USE_REALTIME 1 217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
110#endif 221# endif
222#endif
111 223
112/**/ 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 */
113 241
114#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
117#endif 245#endif
… …
119#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
122#endif 250#endif
123 251
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
124/**/ 283/**/
125 284
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
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130 298
131#include "ev.h"
132
133#if __GNUC__ >= 3 299#if __GNUC__ >= 4
134# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 301# define noinline __attribute__ ((noinline))
136#else 302#else
137# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
138# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
139#endif 308#endif
140 309
141#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
142#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
143 319
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 322
323#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */
325
147typedef struct ev_watcher *W; 326typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
150 329
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 */
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
152 338
339#ifdef _WIN32
153#include "ev_win32.c" 340# include "ev_win32.c"
341#endif
154 342
155/*****************************************************************************/ 343/*****************************************************************************/
156 344
157static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
158 346
347void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 349{
161 syserr_cb = cb; 350 syserr_cb = cb;
162} 351}
163 352
164static void 353static void noinline
165syserr (const char *msg) 354syserr (const char *msg)
166{ 355{
167 if (!msg) 356 if (!msg)
168 msg = "(libev) system error"; 357 msg = "(libev) system error";
169 358
… …
174 perror (msg); 363 perror (msg);
175 abort (); 364 abort ();
176 } 365 }
177} 366}
178 367
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
179static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
180 384
385void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 387{
183 alloc = cb; 388 alloc = cb;
184} 389}
185 390
186static void * 391inline_speed void *
187ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
188{ 393{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
190 395
191 if (!ptr && size) 396 if (!ptr && size)
192 { 397 {
193 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
194 abort (); 399 abort ();
… …
205typedef struct 410typedef struct
206{ 411{
207 WL head; 412 WL head;
208 unsigned char events; 413 unsigned char events;
209 unsigned char reify; 414 unsigned char reify;
415#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle;
417#endif
210} ANFD; 418} ANFD;
211 419
212typedef struct 420typedef struct
213{ 421{
214 W w; 422 W w;
215 int events; 423 int events;
216} ANPENDING; 424} ANPENDING;
217 425
426#if EV_USE_INOTIFY
427/* hash table entry per inotify-id */
428typedef struct
429{
430 WL head;
431} ANFS;
432#endif
433
434/* Heap Entry */
435#if EV_HEAP_CACHE_AT
436 typedef struct {
437 WT w;
438 ev_tstamp at;
439 } ANHE;
440
441 #define ANHE_w(he) (he) /* access watcher, read-write */
442 #define ANHE_at(he) (he)->at /* acces cahced at, read-only */
443 #define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */
444#else
445 typedef WT ANHE;
446
447 #define ANHE_w(he) (he)
448 #define ANHE_at(he) (he)->at
449 #define ANHE_at_set(he)
450#endif
451
218#if EV_MULTIPLICITY 452#if EV_MULTIPLICITY
219 453
220 struct ev_loop 454 struct ev_loop
221 { 455 {
456 ev_tstamp ev_rt_now;
457 #define ev_rt_now ((loop)->ev_rt_now)
222 #define VAR(name,decl) decl; 458 #define VAR(name,decl) decl;
223 #include "ev_vars.h" 459 #include "ev_vars.h"
224 #undef VAR 460 #undef VAR
225 }; 461 };
226 #include "ev_wrap.h" 462 #include "ev_wrap.h"
227 463
228 struct ev_loop default_loop_struct; 464 static struct ev_loop default_loop_struct;
229 static struct ev_loop *default_loop; 465 struct ev_loop *ev_default_loop_ptr;
230 466
231#else 467#else
232 468
469 ev_tstamp ev_rt_now;
233 #define VAR(name,decl) static decl; 470 #define VAR(name,decl) static decl;
234 #include "ev_vars.h" 471 #include "ev_vars.h"
235 #undef VAR 472 #undef VAR
236 473
237 static int default_loop; 474 static int ev_default_loop_ptr;
238 475
239#endif 476#endif
240 477
241/*****************************************************************************/ 478/*****************************************************************************/
242 479
243inline ev_tstamp 480ev_tstamp
244ev_time (void) 481ev_time (void)
245{ 482{
246#if EV_USE_REALTIME 483#if EV_USE_REALTIME
247 struct timespec ts; 484 struct timespec ts;
248 clock_gettime (CLOCK_REALTIME, &ts); 485 clock_gettime (CLOCK_REALTIME, &ts);
… …
252 gettimeofday (&tv, 0); 489 gettimeofday (&tv, 0);
253 return tv.tv_sec + tv.tv_usec * 1e-6; 490 return tv.tv_sec + tv.tv_usec * 1e-6;
254#endif 491#endif
255} 492}
256 493
257inline ev_tstamp 494ev_tstamp inline_size
258get_clock (void) 495get_clock (void)
259{ 496{
260#if EV_USE_MONOTONIC 497#if EV_USE_MONOTONIC
261 if (expect_true (have_monotonic)) 498 if (expect_true (have_monotonic))
262 { 499 {
… …
267#endif 504#endif
268 505
269 return ev_time (); 506 return ev_time ();
270} 507}
271 508
509#if EV_MULTIPLICITY
272ev_tstamp 510ev_tstamp
273ev_now (EV_P) 511ev_now (EV_P)
274{ 512{
275 return rt_now; 513 return ev_rt_now;
276} 514}
515#endif
277 516
278#define array_roundsize(type,n) ((n) | 4 & ~3) 517void
518ev_sleep (ev_tstamp delay)
519{
520 if (delay > 0.)
521 {
522#if EV_USE_NANOSLEEP
523 struct timespec ts;
524
525 ts.tv_sec = (time_t)delay;
526 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
527
528 nanosleep (&ts, 0);
529#elif defined(_WIN32)
530 Sleep ((unsigned long)(delay * 1e3));
531#else
532 struct timeval tv;
533
534 tv.tv_sec = (time_t)delay;
535 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
536
537 select (0, 0, 0, 0, &tv);
538#endif
539 }
540}
541
542/*****************************************************************************/
543
544#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
545
546int inline_size
547array_nextsize (int elem, int cur, int cnt)
548{
549 int ncur = cur + 1;
550
551 do
552 ncur <<= 1;
553 while (cnt > ncur);
554
555 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
556 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
557 {
558 ncur *= elem;
559 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
560 ncur = ncur - sizeof (void *) * 4;
561 ncur /= elem;
562 }
563
564 return ncur;
565}
566
567static noinline void *
568array_realloc (int elem, void *base, int *cur, int cnt)
569{
570 *cur = array_nextsize (elem, *cur, cnt);
571 return ev_realloc (base, elem * *cur);
572}
279 573
280#define array_needsize(type,base,cur,cnt,init) \ 574#define array_needsize(type,base,cur,cnt,init) \
281 if (expect_false ((cnt) > cur)) \ 575 if (expect_false ((cnt) > (cur))) \
282 { \ 576 { \
283 int newcnt = cur; \ 577 int ocur_ = (cur); \
284 do \ 578 (base) = (type *)array_realloc \
285 { \ 579 (sizeof (type), (base), &(cur), (cnt)); \
286 newcnt = array_roundsize (type, newcnt << 1); \ 580 init ((base) + (ocur_), (cur) - ocur_); \
287 } \
288 while ((cnt) > newcnt); \
289 \
290 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
291 init (base + cur, newcnt - cur); \
292 cur = newcnt; \
293 } 581 }
294 582
583#if 0
295#define array_slim(type,stem) \ 584#define array_slim(type,stem) \
296 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 585 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
297 { \ 586 { \
298 stem ## max = array_roundsize (stem ## cnt >> 1); \ 587 stem ## max = array_roundsize (stem ## cnt >> 1); \
299 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 588 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
300 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 589 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
301 } 590 }
302 591#endif
303/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
304/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
305#define array_free_microshit(stem) \
306 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
307 592
308#define array_free(stem, idx) \ 593#define array_free(stem, idx) \
309 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 594 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
310 595
311/*****************************************************************************/ 596/*****************************************************************************/
312 597
313static void 598void noinline
599ev_feed_event (EV_P_ void *w, int revents)
600{
601 W w_ = (W)w;
602 int pri = ABSPRI (w_);
603
604 if (expect_false (w_->pending))
605 pendings [pri][w_->pending - 1].events |= revents;
606 else
607 {
608 w_->pending = ++pendingcnt [pri];
609 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
610 pendings [pri][w_->pending - 1].w = w_;
611 pendings [pri][w_->pending - 1].events = revents;
612 }
613}
614
615void inline_speed
616queue_events (EV_P_ W *events, int eventcnt, int type)
617{
618 int i;
619
620 for (i = 0; i < eventcnt; ++i)
621 ev_feed_event (EV_A_ events [i], type);
622}
623
624/*****************************************************************************/
625
626void inline_size
314anfds_init (ANFD *base, int count) 627anfds_init (ANFD *base, int count)
315{ 628{
316 while (count--) 629 while (count--)
317 { 630 {
318 base->head = 0; 631 base->head = 0;
… …
321 634
322 ++base; 635 ++base;
323 } 636 }
324} 637}
325 638
326void 639void inline_speed
327ev_feed_event (EV_P_ void *w, int revents)
328{
329 W w_ = (W)w;
330
331 if (w_->pending)
332 {
333 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
334 return;
335 }
336
337 w_->pending = ++pendingcnt [ABSPRI (w_)];
338 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
339 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
340 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
341}
342
343static void
344queue_events (EV_P_ W *events, int eventcnt, int type)
345{
346 int i;
347
348 for (i = 0; i < eventcnt; ++i)
349 ev_feed_event (EV_A_ events [i], type);
350}
351
352inline void
353fd_event (EV_P_ int fd, int revents) 640fd_event (EV_P_ int fd, int revents)
354{ 641{
355 ANFD *anfd = anfds + fd; 642 ANFD *anfd = anfds + fd;
356 struct ev_io *w; 643 ev_io *w;
357 644
358 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 645 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
359 { 646 {
360 int ev = w->events & revents; 647 int ev = w->events & revents;
361 648
362 if (ev) 649 if (ev)
363 ev_feed_event (EV_A_ (W)w, ev); 650 ev_feed_event (EV_A_ (W)w, ev);
… …
365} 652}
366 653
367void 654void
368ev_feed_fd_event (EV_P_ int fd, int revents) 655ev_feed_fd_event (EV_P_ int fd, int revents)
369{ 656{
657 if (fd >= 0 && fd < anfdmax)
370 fd_event (EV_A_ fd, revents); 658 fd_event (EV_A_ fd, revents);
371} 659}
372 660
373/*****************************************************************************/ 661void inline_size
374
375static void
376fd_reify (EV_P) 662fd_reify (EV_P)
377{ 663{
378 int i; 664 int i;
379 665
380 for (i = 0; i < fdchangecnt; ++i) 666 for (i = 0; i < fdchangecnt; ++i)
381 { 667 {
382 int fd = fdchanges [i]; 668 int fd = fdchanges [i];
383 ANFD *anfd = anfds + fd; 669 ANFD *anfd = anfds + fd;
384 struct ev_io *w; 670 ev_io *w;
385 671
386 int events = 0; 672 unsigned char events = 0;
387 673
388 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 674 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
389 events |= w->events; 675 events |= (unsigned char)w->events;
390 676
677#if EV_SELECT_IS_WINSOCKET
678 if (events)
679 {
680 unsigned long argp;
681 #ifdef EV_FD_TO_WIN32_HANDLE
682 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683 #else
684 anfd->handle = _get_osfhandle (fd);
685 #endif
686 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
687 }
688#endif
689
690 {
691 unsigned char o_events = anfd->events;
692 unsigned char o_reify = anfd->reify;
693
391 anfd->reify = 0; 694 anfd->reify = 0;
392
393 method_modify (EV_A_ fd, anfd->events, events);
394 anfd->events = events; 695 anfd->events = events;
696
697 if (o_events != events || o_reify & EV_IOFDSET)
698 backend_modify (EV_A_ fd, o_events, events);
699 }
395 } 700 }
396 701
397 fdchangecnt = 0; 702 fdchangecnt = 0;
398} 703}
399 704
400static void 705void inline_size
401fd_change (EV_P_ int fd) 706fd_change (EV_P_ int fd, int flags)
402{ 707{
403 if (anfds [fd].reify) 708 unsigned char reify = anfds [fd].reify;
404 return;
405
406 anfds [fd].reify = 1; 709 anfds [fd].reify |= flags;
407 710
711 if (expect_true (!reify))
712 {
408 ++fdchangecnt; 713 ++fdchangecnt;
409 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 714 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
410 fdchanges [fdchangecnt - 1] = fd; 715 fdchanges [fdchangecnt - 1] = fd;
716 }
411} 717}
412 718
413static void 719void inline_speed
414fd_kill (EV_P_ int fd) 720fd_kill (EV_P_ int fd)
415{ 721{
416 struct ev_io *w; 722 ev_io *w;
417 723
418 while ((w = (struct ev_io *)anfds [fd].head)) 724 while ((w = (ev_io *)anfds [fd].head))
419 { 725 {
420 ev_io_stop (EV_A_ w); 726 ev_io_stop (EV_A_ w);
421 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 727 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
422 } 728 }
423} 729}
424 730
425static int 731int inline_size
426fd_valid (int fd) 732fd_valid (int fd)
427{ 733{
428#ifdef WIN32 734#ifdef _WIN32
429 return !!win32_get_osfhandle (fd); 735 return _get_osfhandle (fd) != -1;
430#else 736#else
431 return fcntl (fd, F_GETFD) != -1; 737 return fcntl (fd, F_GETFD) != -1;
432#endif 738#endif
433} 739}
434 740
435/* called on EBADF to verify fds */ 741/* called on EBADF to verify fds */
436static void 742static void noinline
437fd_ebadf (EV_P) 743fd_ebadf (EV_P)
438{ 744{
439 int fd; 745 int fd;
440 746
441 for (fd = 0; fd < anfdmax; ++fd) 747 for (fd = 0; fd < anfdmax; ++fd)
… …
443 if (!fd_valid (fd) == -1 && errno == EBADF) 749 if (!fd_valid (fd) == -1 && errno == EBADF)
444 fd_kill (EV_A_ fd); 750 fd_kill (EV_A_ fd);
445} 751}
446 752
447/* called on ENOMEM in select/poll to kill some fds and retry */ 753/* called on ENOMEM in select/poll to kill some fds and retry */
448static void 754static void noinline
449fd_enomem (EV_P) 755fd_enomem (EV_P)
450{ 756{
451 int fd; 757 int fd;
452 758
453 for (fd = anfdmax; fd--; ) 759 for (fd = anfdmax; fd--; )
… …
456 fd_kill (EV_A_ fd); 762 fd_kill (EV_A_ fd);
457 return; 763 return;
458 } 764 }
459} 765}
460 766
461/* usually called after fork if method needs to re-arm all fds from scratch */ 767/* usually called after fork if backend needs to re-arm all fds from scratch */
462static void 768static void noinline
463fd_rearm_all (EV_P) 769fd_rearm_all (EV_P)
464{ 770{
465 int fd; 771 int fd;
466 772
467 /* this should be highly optimised to not do anything but set a flag */
468 for (fd = 0; fd < anfdmax; ++fd) 773 for (fd = 0; fd < anfdmax; ++fd)
469 if (anfds [fd].events) 774 if (anfds [fd].events)
470 { 775 {
471 anfds [fd].events = 0; 776 anfds [fd].events = 0;
472 fd_change (EV_A_ fd); 777 fd_change (EV_A_ fd, EV_IOFDSET | 1);
473 } 778 }
474} 779}
475 780
476/*****************************************************************************/ 781/*****************************************************************************/
477 782
478static void 783/*
784 * the heap functions want a real array index. array index 0 uis guaranteed to not
785 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
786 * the branching factor of the d-tree.
787 */
788
789/*
790 * at the moment we allow libev the luxury of two heaps,
791 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
792 * which is more cache-efficient.
793 * the difference is about 5% with 50000+ watchers.
794 */
795#define EV_USE_4HEAP !EV_MINIMAL
796#if EV_USE_4HEAP
797
798#define DHEAP 4
799#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800
801/* towards the root */
802void inline_speed
479upheap (WT *heap, int k) 803upheap (ANHE *heap, int k)
480{ 804{
481 WT w = heap [k]; 805 ANHE he = heap [k];
482 806
483 while (k && heap [k >> 1]->at > w->at) 807 for (;;)
484 { 808 {
809 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812 break;
813
485 heap [k] = heap [k >> 1]; 814 heap [k] = heap [p];
486 ((W)heap [k])->active = k + 1; 815 ev_active (ANHE_w (heap [k])) = k;
487 k >>= 1; 816 k = p;
817 }
818
819 ev_active (ANHE_w (he)) = k;
820 heap [k] = he;
821}
822
823/* away from the root */
824void inline_speed
825downheap (ANHE *heap, int N, int k)
826{
827 ANHE he = heap [k];
828 ANHE *E = heap + N + HEAP0;
829
830 for (;;)
831 {
832 ev_tstamp minat;
833 ANHE *minpos;
834 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
835
836 // find minimum child
837 if (expect_true (pos + DHEAP - 1 < E))
838 {
839 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843 }
844 else if (pos < E)
845 {
846 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 }
851 else
852 break;
853
854 if (ANHE_at (he) <= minat)
855 break;
856
857 ev_active (ANHE_w (*minpos)) = k;
858 heap [k] = *minpos;
859
860 k = minpos - heap;
861 }
862
863 ev_active (ANHE_w (he)) = k;
864 heap [k] = he;
865}
866
867#else // 4HEAP
868
869#define HEAP0 1
870
871/* towards the root */
872void inline_speed
873upheap (ANHE *heap, int k)
874{
875 ANHE he = heap [k];
876
877 for (;;)
878 {
879 int p = k >> 1;
880
881 /* maybe we could use a dummy element at heap [0]? */
882 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883 break;
884
885 heap [k] = heap [p];
886 ev_active (ANHE_w (heap [k])) = k;
887 k = p;
488 } 888 }
489 889
490 heap [k] = w; 890 heap [k] = w;
491 ((W)heap [k])->active = k + 1; 891 ev_active (ANHE_w (heap [k])) = k;
492
493} 892}
494 893
495static void 894/* away from the root */
895void inline_speed
496downheap (WT *heap, int N, int k) 896downheap (ANHE *heap, int N, int k)
497{ 897{
498 WT w = heap [k]; 898 ANHE he = heap [k];
499 899
500 while (k < (N >> 1)) 900 for (;;)
501 { 901 {
502 int j = k << 1; 902 int c = k << 1;
503 903
504 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 904 if (c > N)
505 ++j;
506
507 if (w->at <= heap [j]->at)
508 break; 905 break;
509 906
907 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0;
909
910 if (w->at <= ANHE_at (heap [c]))
911 break;
912
510 heap [k] = heap [j]; 913 heap [k] = heap [c];
511 ((W)heap [k])->active = k + 1; 914 ev_active (ANHE_w (heap [k])) = k;
915
512 k = j; 916 k = c;
513 } 917 }
514 918
515 heap [k] = w; 919 heap [k] = he;
516 ((W)heap [k])->active = k + 1; 920 ev_active (ANHE_w (he)) = k;
921}
922#endif
923
924void inline_size
925adjustheap (ANHE *heap, int N, int k)
926{
927 upheap (heap, k);
928 downheap (heap, N, k);
517} 929}
518 930
519/*****************************************************************************/ 931/*****************************************************************************/
520 932
521typedef struct 933typedef struct
522{ 934{
523 WL head; 935 WL head;
524 sig_atomic_t volatile gotsig; 936 EV_ATOMIC_T gotsig;
525} ANSIG; 937} ANSIG;
526 938
527static ANSIG *signals; 939static ANSIG *signals;
528static int signalmax; 940static int signalmax;
529 941
530static int sigpipe [2]; 942static EV_ATOMIC_T gotsig;
531static sig_atomic_t volatile gotsig;
532static struct ev_io sigev;
533 943
534static void 944void inline_size
535signals_init (ANSIG *base, int count) 945signals_init (ANSIG *base, int count)
536{ 946{
537 while (count--) 947 while (count--)
538 { 948 {
539 base->head = 0; 949 base->head = 0;
… …
541 951
542 ++base; 952 ++base;
543 } 953 }
544} 954}
545 955
956/*****************************************************************************/
957
958void inline_speed
959fd_intern (int fd)
960{
961#ifdef _WIN32
962 int arg = 1;
963 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
964#else
965 fcntl (fd, F_SETFD, FD_CLOEXEC);
966 fcntl (fd, F_SETFL, O_NONBLOCK);
967#endif
968}
969
970static void noinline
971evpipe_init (EV_P)
972{
973 if (!ev_is_active (&pipeev))
974 {
975#if EV_USE_EVENTFD
976 if ((evfd = eventfd (0, 0)) >= 0)
977 {
978 evpipe [0] = -1;
979 fd_intern (evfd);
980 ev_io_set (&pipeev, evfd, EV_READ);
981 }
982 else
983#endif
984 {
985 while (pipe (evpipe))
986 syserr ("(libev) error creating signal/async pipe");
987
988 fd_intern (evpipe [0]);
989 fd_intern (evpipe [1]);
990 ev_io_set (&pipeev, evpipe [0], EV_READ);
991 }
992
993 ev_io_start (EV_A_ &pipeev);
994 ev_unref (EV_A); /* watcher should not keep loop alive */
995 }
996}
997
998void inline_size
999evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000{
1001 if (!*flag)
1002 {
1003 int old_errno = errno; /* save errno because write might clobber it */
1004
1005 *flag = 1;
1006
1007#if EV_USE_EVENTFD
1008 if (evfd >= 0)
1009 {
1010 uint64_t counter = 1;
1011 write (evfd, &counter, sizeof (uint64_t));
1012 }
1013 else
1014#endif
1015 write (evpipe [1], &old_errno, 1);
1016
1017 errno = old_errno;
1018 }
1019}
1020
546static void 1021static void
1022pipecb (EV_P_ ev_io *iow, int revents)
1023{
1024#if EV_USE_EVENTFD
1025 if (evfd >= 0)
1026 {
1027 uint64_t counter;
1028 read (evfd, &counter, sizeof (uint64_t));
1029 }
1030 else
1031#endif
1032 {
1033 char dummy;
1034 read (evpipe [0], &dummy, 1);
1035 }
1036
1037 if (gotsig && ev_is_default_loop (EV_A))
1038 {
1039 int signum;
1040 gotsig = 0;
1041
1042 for (signum = signalmax; signum--; )
1043 if (signals [signum].gotsig)
1044 ev_feed_signal_event (EV_A_ signum + 1);
1045 }
1046
1047#if EV_ASYNC_ENABLE
1048 if (gotasync)
1049 {
1050 int i;
1051 gotasync = 0;
1052
1053 for (i = asynccnt; i--; )
1054 if (asyncs [i]->sent)
1055 {
1056 asyncs [i]->sent = 0;
1057 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1058 }
1059 }
1060#endif
1061}
1062
1063/*****************************************************************************/
1064
1065static void
547sighandler (int signum) 1066ev_sighandler (int signum)
548{ 1067{
1068#if EV_MULTIPLICITY
1069 struct ev_loop *loop = &default_loop_struct;
1070#endif
1071
549#if WIN32 1072#if _WIN32
550 signal (signum, sighandler); 1073 signal (signum, ev_sighandler);
551#endif 1074#endif
552 1075
553 signals [signum - 1].gotsig = 1; 1076 signals [signum - 1].gotsig = 1;
554 1077 evpipe_write (EV_A_ &gotsig);
555 if (!gotsig)
556 {
557 int old_errno = errno;
558 gotsig = 1;
559#ifdef WIN32
560 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
561#else
562 write (sigpipe [1], &signum, 1);
563#endif
564 errno = old_errno;
565 }
566} 1078}
567 1079
568void 1080void noinline
569ev_feed_signal_event (EV_P_ int signum) 1081ev_feed_signal_event (EV_P_ int signum)
570{ 1082{
571 WL w; 1083 WL w;
572 1084
573#if EV_MULTIPLICITY 1085#if EV_MULTIPLICITY
574 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 1086 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
575#endif 1087#endif
576 1088
577 --signum; 1089 --signum;
578 1090
579 if (signum < 0 || signum >= signalmax) 1091 if (signum < 0 || signum >= signalmax)
… …
583 1095
584 for (w = signals [signum].head; w; w = w->next) 1096 for (w = signals [signum].head; w; w = w->next)
585 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1097 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
586} 1098}
587 1099
588static void
589sigcb (EV_P_ struct ev_io *iow, int revents)
590{
591 int signum;
592
593#ifdef WIN32
594 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
595#else
596 read (sigpipe [0], &revents, 1);
597#endif
598 gotsig = 0;
599
600 for (signum = signalmax; signum--; )
601 if (signals [signum].gotsig)
602 ev_feed_signal_event (EV_A_ signum + 1);
603}
604
605static void
606siginit (EV_P)
607{
608#ifndef WIN32
609 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
610 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
611
612 /* rather than sort out wether we really need nb, set it */
613 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
614 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
615#endif
616
617 ev_io_set (&sigev, sigpipe [0], EV_READ);
618 ev_io_start (EV_A_ &sigev);
619 ev_unref (EV_A); /* child watcher should not keep loop alive */
620}
621
622/*****************************************************************************/ 1100/*****************************************************************************/
623 1101
624static struct ev_child *childs [PID_HASHSIZE]; 1102static WL childs [EV_PID_HASHSIZE];
625 1103
626#ifndef WIN32 1104#ifndef _WIN32
627 1105
628static struct ev_signal childev; 1106static ev_signal childev;
1107
1108#ifndef WIFCONTINUED
1109# define WIFCONTINUED(status) 0
1110#endif
1111
1112void inline_speed
1113child_reap (EV_P_ int chain, int pid, int status)
1114{
1115 ev_child *w;
1116 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117
1118 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1119 {
1120 if ((w->pid == pid || !w->pid)
1121 && (!traced || (w->flags & 1)))
1122 {
1123 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1124 w->rpid = pid;
1125 w->rstatus = status;
1126 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1127 }
1128 }
1129}
629 1130
630#ifndef WCONTINUED 1131#ifndef WCONTINUED
631# define WCONTINUED 0 1132# define WCONTINUED 0
632#endif 1133#endif
633 1134
634static void 1135static void
635child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
636{
637 struct ev_child *w;
638
639 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
640 if (w->pid == pid || !w->pid)
641 {
642 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
643 w->rpid = pid;
644 w->rstatus = status;
645 ev_feed_event (EV_A_ (W)w, EV_CHILD);
646 }
647}
648
649static void
650childcb (EV_P_ struct ev_signal *sw, int revents) 1136childcb (EV_P_ ev_signal *sw, int revents)
651{ 1137{
652 int pid, status; 1138 int pid, status;
653 1139
1140 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
654 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1141 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
655 { 1142 if (!WCONTINUED
1143 || errno != EINVAL
1144 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1145 return;
1146
656 /* make sure we are called again until all childs have been reaped */ 1147 /* make sure we are called again until all children have been reaped */
1148 /* we need to do it this way so that the callback gets called before we continue */
657 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1149 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
658 1150
659 child_reap (EV_A_ sw, pid, pid, status); 1151 child_reap (EV_A_ pid, pid, status);
1152 if (EV_PID_HASHSIZE > 1)
660 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1153 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
661 }
662} 1154}
663 1155
664#endif 1156#endif
665 1157
666/*****************************************************************************/ 1158/*****************************************************************************/
667 1159
1160#if EV_USE_PORT
1161# include "ev_port.c"
1162#endif
668#if EV_USE_KQUEUE 1163#if EV_USE_KQUEUE
669# include "ev_kqueue.c" 1164# include "ev_kqueue.c"
670#endif 1165#endif
671#if EV_USE_EPOLL 1166#if EV_USE_EPOLL
672# include "ev_epoll.c" 1167# include "ev_epoll.c"
… …
689{ 1184{
690 return EV_VERSION_MINOR; 1185 return EV_VERSION_MINOR;
691} 1186}
692 1187
693/* return true if we are running with elevated privileges and should ignore env variables */ 1188/* return true if we are running with elevated privileges and should ignore env variables */
694static int 1189int inline_size
695enable_secure (void) 1190enable_secure (void)
696{ 1191{
697#ifdef WIN32 1192#ifdef _WIN32
698 return 0; 1193 return 0;
699#else 1194#else
700 return getuid () != geteuid () 1195 return getuid () != geteuid ()
701 || getgid () != getegid (); 1196 || getgid () != getegid ();
702#endif 1197#endif
703} 1198}
704 1199
705int 1200unsigned int
706ev_method (EV_P) 1201ev_supported_backends (void)
707{ 1202{
708 return method; 1203 unsigned int flags = 0;
709}
710 1204
711static void 1205 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
712loop_init (EV_P_ int methods) 1206 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1207 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1208 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1209 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1210
1211 return flags;
1212}
1213
1214unsigned int
1215ev_recommended_backends (void)
713{ 1216{
714 if (!method) 1217 unsigned int flags = ev_supported_backends ();
1218
1219#ifndef __NetBSD__
1220 /* kqueue is borked on everything but netbsd apparently */
1221 /* it usually doesn't work correctly on anything but sockets and pipes */
1222 flags &= ~EVBACKEND_KQUEUE;
1223#endif
1224#ifdef __APPLE__
1225 // flags &= ~EVBACKEND_KQUEUE; for documentation
1226 flags &= ~EVBACKEND_POLL;
1227#endif
1228
1229 return flags;
1230}
1231
1232unsigned int
1233ev_embeddable_backends (void)
1234{
1235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1236
1237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1238 /* please fix it and tell me how to detect the fix */
1239 flags &= ~EVBACKEND_EPOLL;
1240
1241 return flags;
1242}
1243
1244unsigned int
1245ev_backend (EV_P)
1246{
1247 return backend;
1248}
1249
1250unsigned int
1251ev_loop_count (EV_P)
1252{
1253 return loop_count;
1254}
1255
1256void
1257ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1258{
1259 io_blocktime = interval;
1260}
1261
1262void
1263ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264{
1265 timeout_blocktime = interval;
1266}
1267
1268static void noinline
1269loop_init (EV_P_ unsigned int flags)
1270{
1271 if (!backend)
715 { 1272 {
716#if EV_USE_MONOTONIC 1273#if EV_USE_MONOTONIC
717 { 1274 {
718 struct timespec ts; 1275 struct timespec ts;
719 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1276 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
720 have_monotonic = 1; 1277 have_monotonic = 1;
721 } 1278 }
722#endif 1279#endif
723 1280
724 rt_now = ev_time (); 1281 ev_rt_now = ev_time ();
725 mn_now = get_clock (); 1282 mn_now = get_clock ();
726 now_floor = mn_now; 1283 now_floor = mn_now;
727 rtmn_diff = rt_now - mn_now; 1284 rtmn_diff = ev_rt_now - mn_now;
728 1285
729 if (methods == EVMETHOD_AUTO) 1286 io_blocktime = 0.;
730 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1287 timeout_blocktime = 0.;
1288 backend = 0;
1289 backend_fd = -1;
1290 gotasync = 0;
1291#if EV_USE_INOTIFY
1292 fs_fd = -2;
1293#endif
1294
1295 /* pid check not overridable via env */
1296#ifndef _WIN32
1297 if (flags & EVFLAG_FORKCHECK)
1298 curpid = getpid ();
1299#endif
1300
1301 if (!(flags & EVFLAG_NOENV)
1302 && !enable_secure ()
1303 && getenv ("LIBEV_FLAGS"))
731 methods = atoi (getenv ("LIBEV_METHODS")); 1304 flags = atoi (getenv ("LIBEV_FLAGS"));
732 else
733 methods = EVMETHOD_ANY;
734 1305
735 method = 0; 1306 if (!(flags & 0x0000ffffU))
736#if EV_USE_WIN32 1307 flags |= ev_recommended_backends ();
737 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1308
1309#if EV_USE_PORT
1310 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
738#endif 1311#endif
739#if EV_USE_KQUEUE 1312#if EV_USE_KQUEUE
740 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1313 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
741#endif 1314#endif
742#if EV_USE_EPOLL 1315#if EV_USE_EPOLL
743 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1316 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
744#endif 1317#endif
745#if EV_USE_POLL 1318#if EV_USE_POLL
746 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1319 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
747#endif 1320#endif
748#if EV_USE_SELECT 1321#if EV_USE_SELECT
749 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1322 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
750#endif 1323#endif
751 1324
752 ev_watcher_init (&sigev, sigcb); 1325 ev_init (&pipeev, pipecb);
753 ev_set_priority (&sigev, EV_MAXPRI); 1326 ev_set_priority (&pipeev, EV_MAXPRI);
754 } 1327 }
755} 1328}
756 1329
757void 1330static void noinline
758loop_destroy (EV_P) 1331loop_destroy (EV_P)
759{ 1332{
760 int i; 1333 int i;
761 1334
1335 if (ev_is_active (&pipeev))
1336 {
1337 ev_ref (EV_A); /* signal watcher */
1338 ev_io_stop (EV_A_ &pipeev);
1339
1340#if EV_USE_EVENTFD
1341 if (evfd >= 0)
1342 close (evfd);
1343#endif
1344
1345 if (evpipe [0] >= 0)
1346 {
1347 close (evpipe [0]);
1348 close (evpipe [1]);
1349 }
1350 }
1351
762#if EV_USE_WIN32 1352#if EV_USE_INOTIFY
763 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1353 if (fs_fd >= 0)
1354 close (fs_fd);
1355#endif
1356
1357 if (backend_fd >= 0)
1358 close (backend_fd);
1359
1360#if EV_USE_PORT
1361 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
764#endif 1362#endif
765#if EV_USE_KQUEUE 1363#if EV_USE_KQUEUE
766 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1364 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
767#endif 1365#endif
768#if EV_USE_EPOLL 1366#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1367 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
770#endif 1368#endif
771#if EV_USE_POLL 1369#if EV_USE_POLL
772 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1370 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
773#endif 1371#endif
774#if EV_USE_SELECT 1372#if EV_USE_SELECT
775 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1373 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
776#endif 1374#endif
777 1375
778 for (i = NUMPRI; i--; ) 1376 for (i = NUMPRI; i--; )
1377 {
779 array_free (pending, [i]); 1378 array_free (pending, [i]);
1379#if EV_IDLE_ENABLE
1380 array_free (idle, [i]);
1381#endif
1382 }
1383
1384 ev_free (anfds); anfdmax = 0;
780 1385
781 /* have to use the microsoft-never-gets-it-right macro */ 1386 /* have to use the microsoft-never-gets-it-right macro */
782 array_free_microshit (fdchange); 1387 array_free (fdchange, EMPTY);
783 array_free_microshit (timer); 1388 array_free (timer, EMPTY);
784 array_free_microshit (periodic); 1389#if EV_PERIODIC_ENABLE
785 array_free_microshit (idle); 1390 array_free (periodic, EMPTY);
786 array_free_microshit (prepare); 1391#endif
787 array_free_microshit (check); 1392#if EV_FORK_ENABLE
1393 array_free (fork, EMPTY);
1394#endif
1395 array_free (prepare, EMPTY);
1396 array_free (check, EMPTY);
1397#if EV_ASYNC_ENABLE
1398 array_free (async, EMPTY);
1399#endif
788 1400
789 method = 0; 1401 backend = 0;
790} 1402}
791 1403
792static void 1404#if EV_USE_INOTIFY
1405void inline_size infy_fork (EV_P);
1406#endif
1407
1408void inline_size
793loop_fork (EV_P) 1409loop_fork (EV_P)
794{ 1410{
1411#if EV_USE_PORT
1412 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413#endif
1414#if EV_USE_KQUEUE
1415 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1416#endif
795#if EV_USE_EPOLL 1417#if EV_USE_EPOLL
796 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1418 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
797#endif 1419#endif
798#if EV_USE_KQUEUE 1420#if EV_USE_INOTIFY
799 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1421 infy_fork (EV_A);
800#endif 1422#endif
801 1423
802 if (ev_is_active (&sigev)) 1424 if (ev_is_active (&pipeev))
803 { 1425 {
804 /* default loop */ 1426 /* this "locks" the handlers against writing to the pipe */
1427 /* while we modify the fd vars */
1428 gotsig = 1;
1429#if EV_ASYNC_ENABLE
1430 gotasync = 1;
1431#endif
805 1432
806 ev_ref (EV_A); 1433 ev_ref (EV_A);
807 ev_io_stop (EV_A_ &sigev); 1434 ev_io_stop (EV_A_ &pipeev);
1435
1436#if EV_USE_EVENTFD
1437 if (evfd >= 0)
1438 close (evfd);
1439#endif
1440
1441 if (evpipe [0] >= 0)
1442 {
808 close (sigpipe [0]); 1443 close (evpipe [0]);
809 close (sigpipe [1]); 1444 close (evpipe [1]);
1445 }
810 1446
811 while (pipe (sigpipe))
812 syserr ("(libev) error creating pipe");
813
814 siginit (EV_A); 1447 evpipe_init (EV_A);
1448 /* now iterate over everything, in case we missed something */
1449 pipecb (EV_A_ &pipeev, EV_READ);
815 } 1450 }
816 1451
817 postfork = 0; 1452 postfork = 0;
818} 1453}
819 1454
820#if EV_MULTIPLICITY 1455#if EV_MULTIPLICITY
821struct ev_loop * 1456struct ev_loop *
822ev_loop_new (int methods) 1457ev_loop_new (unsigned int flags)
823{ 1458{
824 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1459 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
825 1460
826 memset (loop, 0, sizeof (struct ev_loop)); 1461 memset (loop, 0, sizeof (struct ev_loop));
827 1462
828 loop_init (EV_A_ methods); 1463 loop_init (EV_A_ flags);
829 1464
830 if (ev_method (EV_A)) 1465 if (ev_backend (EV_A))
831 return loop; 1466 return loop;
832 1467
833 return 0; 1468 return 0;
834} 1469}
835 1470
… …
841} 1476}
842 1477
843void 1478void
844ev_loop_fork (EV_P) 1479ev_loop_fork (EV_P)
845{ 1480{
846 postfork = 1; 1481 postfork = 1; /* must be in line with ev_default_fork */
847} 1482}
848
849#endif 1483#endif
850 1484
851#if EV_MULTIPLICITY 1485#if EV_MULTIPLICITY
852struct ev_loop * 1486struct ev_loop *
1487ev_default_loop_init (unsigned int flags)
853#else 1488#else
854int 1489int
1490ev_default_loop (unsigned int flags)
855#endif 1491#endif
856ev_default_loop (int methods)
857{ 1492{
858 if (sigpipe [0] == sigpipe [1])
859 if (pipe (sigpipe))
860 return 0;
861
862 if (!default_loop) 1493 if (!ev_default_loop_ptr)
863 { 1494 {
864#if EV_MULTIPLICITY 1495#if EV_MULTIPLICITY
865 struct ev_loop *loop = default_loop = &default_loop_struct; 1496 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
866#else 1497#else
867 default_loop = 1; 1498 ev_default_loop_ptr = 1;
868#endif 1499#endif
869 1500
870 loop_init (EV_A_ methods); 1501 loop_init (EV_A_ flags);
871 1502
872 if (ev_method (EV_A)) 1503 if (ev_backend (EV_A))
873 { 1504 {
874 siginit (EV_A);
875
876#ifndef WIN32 1505#ifndef _WIN32
877 ev_signal_init (&childev, childcb, SIGCHLD); 1506 ev_signal_init (&childev, childcb, SIGCHLD);
878 ev_set_priority (&childev, EV_MAXPRI); 1507 ev_set_priority (&childev, EV_MAXPRI);
879 ev_signal_start (EV_A_ &childev); 1508 ev_signal_start (EV_A_ &childev);
880 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1509 ev_unref (EV_A); /* child watcher should not keep loop alive */
881#endif 1510#endif
882 } 1511 }
883 else 1512 else
884 default_loop = 0; 1513 ev_default_loop_ptr = 0;
885 } 1514 }
886 1515
887 return default_loop; 1516 return ev_default_loop_ptr;
888} 1517}
889 1518
890void 1519void
891ev_default_destroy (void) 1520ev_default_destroy (void)
892{ 1521{
893#if EV_MULTIPLICITY 1522#if EV_MULTIPLICITY
894 struct ev_loop *loop = default_loop; 1523 struct ev_loop *loop = ev_default_loop_ptr;
895#endif 1524#endif
896 1525
897#ifndef WIN32 1526#ifndef _WIN32
898 ev_ref (EV_A); /* child watcher */ 1527 ev_ref (EV_A); /* child watcher */
899 ev_signal_stop (EV_A_ &childev); 1528 ev_signal_stop (EV_A_ &childev);
900#endif 1529#endif
901 1530
902 ev_ref (EV_A); /* signal watcher */
903 ev_io_stop (EV_A_ &sigev);
904
905 close (sigpipe [0]); sigpipe [0] = 0;
906 close (sigpipe [1]); sigpipe [1] = 0;
907
908 loop_destroy (EV_A); 1531 loop_destroy (EV_A);
909} 1532}
910 1533
911void 1534void
912ev_default_fork (void) 1535ev_default_fork (void)
913{ 1536{
914#if EV_MULTIPLICITY 1537#if EV_MULTIPLICITY
915 struct ev_loop *loop = default_loop; 1538 struct ev_loop *loop = ev_default_loop_ptr;
916#endif 1539#endif
917 1540
918 if (method) 1541 if (backend)
919 postfork = 1; 1542 postfork = 1; /* must be in line with ev_loop_fork */
920} 1543}
921 1544
922/*****************************************************************************/ 1545/*****************************************************************************/
923 1546
924static int 1547void
925any_pending (EV_P) 1548ev_invoke (EV_P_ void *w, int revents)
926{ 1549{
927 int pri; 1550 EV_CB_INVOKE ((W)w, revents);
928
929 for (pri = NUMPRI; pri--; )
930 if (pendingcnt [pri])
931 return 1;
932
933 return 0;
934} 1551}
935 1552
936static void 1553void inline_speed
937call_pending (EV_P) 1554call_pending (EV_P)
938{ 1555{
939 int pri; 1556 int pri;
940 1557
941 for (pri = NUMPRI; pri--; ) 1558 for (pri = NUMPRI; pri--; )
942 while (pendingcnt [pri]) 1559 while (pendingcnt [pri])
943 { 1560 {
944 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1561 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
945 1562
946 if (p->w) 1563 if (expect_true (p->w))
947 { 1564 {
1565 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1566
948 p->w->pending = 0; 1567 p->w->pending = 0;
949 p->w->cb (EV_A_ p->w, p->events); 1568 EV_CB_INVOKE (p->w, p->events);
950 } 1569 }
951 } 1570 }
952} 1571}
953 1572
954static void 1573#if EV_IDLE_ENABLE
1574void inline_size
1575idle_reify (EV_P)
1576{
1577 if (expect_false (idleall))
1578 {
1579 int pri;
1580
1581 for (pri = NUMPRI; pri--; )
1582 {
1583 if (pendingcnt [pri])
1584 break;
1585
1586 if (idlecnt [pri])
1587 {
1588 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1589 break;
1590 }
1591 }
1592 }
1593}
1594#endif
1595
1596void inline_size
955timers_reify (EV_P) 1597timers_reify (EV_P)
956{ 1598{
957 while (timercnt && ((WT)timers [0])->at <= mn_now) 1599 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)
958 { 1600 {
959 struct ev_timer *w = timers [0]; 1601 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
960 1602
961 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1603 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
962 1604
963 /* first reschedule or stop timer */ 1605 /* first reschedule or stop timer */
964 if (w->repeat) 1606 if (w->repeat)
965 { 1607 {
966 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1608 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
967 ((WT)w)->at = mn_now + w->repeat; 1609
1610 ev_at (w) += w->repeat;
1611 if (ev_at (w) < mn_now)
1612 ev_at (w) = mn_now;
1613
968 downheap ((WT *)timers, timercnt, 0); 1614 downheap (timers, timercnt, HEAP0);
969 } 1615 }
970 else 1616 else
971 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1617 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
972 1618
973 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1619 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
974 } 1620 }
975} 1621}
976 1622
977static void 1623#if EV_PERIODIC_ENABLE
1624void inline_size
978periodics_reify (EV_P) 1625periodics_reify (EV_P)
979{ 1626{
980 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1627 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)
981 { 1628 {
982 struct ev_periodic *w = periodics [0]; 1629 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
983 1630
984 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1631 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
985 1632
986 /* first reschedule or stop timer */ 1633 /* first reschedule or stop timer */
987 if (w->reschedule_cb) 1634 if (w->reschedule_cb)
988 { 1635 {
989 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1636 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
990
991 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1637 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
992 downheap ((WT *)periodics, periodiccnt, 0); 1638 downheap (periodics, periodiccnt, 1);
993 } 1639 }
994 else if (w->interval) 1640 else if (w->interval)
995 { 1641 {
996 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
997 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1644 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
998 downheap ((WT *)periodics, periodiccnt, 0); 1645 downheap (periodics, periodiccnt, HEAP0);
999 } 1646 }
1000 else 1647 else
1001 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1648 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1002 1649
1003 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1650 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1004 } 1651 }
1005} 1652}
1006 1653
1007static void 1654static void noinline
1008periodics_reschedule (EV_P) 1655periodics_reschedule (EV_P)
1009{ 1656{
1010 int i; 1657 int i;
1011 1658
1012 /* adjust periodics after time jump */ 1659 /* adjust periodics after time jump */
1013 for (i = 0; i < periodiccnt; ++i) 1660 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1014 { 1661 {
1015 struct ev_periodic *w = periodics [i]; 1662 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1016 1663
1017 if (w->reschedule_cb) 1664 if (w->reschedule_cb)
1018 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1019 else if (w->interval) 1666 else if (w->interval)
1020 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1667 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1021 } 1668 }
1022 1669
1023 /* now rebuild the heap */ 1670 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
1024 for (i = periodiccnt >> 1; i--; ) 1671 for (i = periodiccnt >> 1; --i; )
1025 downheap ((WT *)periodics, periodiccnt, i); 1672 downheap (periodics, periodiccnt, i + HEAP0);
1026} 1673}
1674#endif
1027 1675
1028inline int 1676void inline_speed
1029time_update_monotonic (EV_P) 1677time_update (EV_P_ ev_tstamp max_block)
1030{
1031 mn_now = get_clock ();
1032
1033 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1034 {
1035 rt_now = rtmn_diff + mn_now;
1036 return 0;
1037 }
1038 else
1039 {
1040 now_floor = mn_now;
1041 rt_now = ev_time ();
1042 return 1;
1043 }
1044}
1045
1046static void
1047time_update (EV_P)
1048{ 1678{
1049 int i; 1679 int i;
1050 1680
1051#if EV_USE_MONOTONIC 1681#if EV_USE_MONOTONIC
1052 if (expect_true (have_monotonic)) 1682 if (expect_true (have_monotonic))
1053 { 1683 {
1054 if (time_update_monotonic (EV_A)) 1684 ev_tstamp odiff = rtmn_diff;
1685
1686 mn_now = get_clock ();
1687
1688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1689 /* interpolate in the meantime */
1690 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1055 { 1691 {
1056 ev_tstamp odiff = rtmn_diff; 1692 ev_rt_now = rtmn_diff + mn_now;
1693 return;
1694 }
1057 1695
1696 now_floor = mn_now;
1697 ev_rt_now = ev_time ();
1698
1058 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1699 /* loop a few times, before making important decisions.
1700 * on the choice of "4": one iteration isn't enough,
1701 * in case we get preempted during the calls to
1702 * ev_time and get_clock. a second call is almost guaranteed
1703 * to succeed in that case, though. and looping a few more times
1704 * doesn't hurt either as we only do this on time-jumps or
1705 * in the unlikely event of having been preempted here.
1706 */
1707 for (i = 4; --i; )
1708 {
1709 rtmn_diff = ev_rt_now - mn_now;
1710
1711 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1712 return; /* all is well */
1713
1714 ev_rt_now = ev_time ();
1715 mn_now = get_clock ();
1716 now_floor = mn_now;
1717 }
1718
1719# if EV_PERIODIC_ENABLE
1720 periodics_reschedule (EV_A);
1721# endif
1722 /* no timer adjustment, as the monotonic clock doesn't jump */
1723 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724 }
1725 else
1726#endif
1727 {
1728 ev_rt_now = ev_time ();
1729
1730 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731 {
1732#if EV_PERIODIC_ENABLE
1733 periodics_reschedule (EV_A);
1734#endif
1735 /* adjust timers. this is easy, as the offset is the same for all of them */
1736 for (i = 0; i < timercnt; ++i)
1059 { 1737 {
1060 rtmn_diff = rt_now - mn_now; 1738 ANHE *he = timers + i + HEAP0;
1061 1739 ANHE_w (*he)->at += ev_rt_now - mn_now;
1062 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1740 ANHE_at_set (*he);
1063 return; /* all is well */
1064
1065 rt_now = ev_time ();
1066 mn_now = get_clock ();
1067 now_floor = mn_now;
1068 } 1741 }
1069
1070 periodics_reschedule (EV_A);
1071 /* no timer adjustment, as the monotonic clock doesn't jump */
1072 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1073 } 1742 }
1074 }
1075 else
1076#endif
1077 {
1078 rt_now = ev_time ();
1079 1743
1080 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1081 {
1082 periodics_reschedule (EV_A);
1083
1084 /* adjust timers. this is easy, as the offset is the same for all */
1085 for (i = 0; i < timercnt; ++i)
1086 ((WT)timers [i])->at += rt_now - mn_now;
1087 }
1088
1089 mn_now = rt_now; 1744 mn_now = ev_rt_now;
1090 } 1745 }
1091} 1746}
1092 1747
1093void 1748void
1094ev_ref (EV_P) 1749ev_ref (EV_P)
… …
1105static int loop_done; 1760static int loop_done;
1106 1761
1107void 1762void
1108ev_loop (EV_P_ int flags) 1763ev_loop (EV_P_ int flags)
1109{ 1764{
1110 double block; 1765 loop_done = EVUNLOOP_CANCEL;
1111 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1766
1767 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1112 1768
1113 do 1769 do
1114 { 1770 {
1771#ifndef _WIN32
1772 if (expect_false (curpid)) /* penalise the forking check even more */
1773 if (expect_false (getpid () != curpid))
1774 {
1775 curpid = getpid ();
1776 postfork = 1;
1777 }
1778#endif
1779
1780#if EV_FORK_ENABLE
1781 /* we might have forked, so queue fork handlers */
1782 if (expect_false (postfork))
1783 if (forkcnt)
1784 {
1785 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1786 call_pending (EV_A);
1787 }
1788#endif
1789
1115 /* queue check watchers (and execute them) */ 1790 /* queue prepare watchers (and execute them) */
1116 if (expect_false (preparecnt)) 1791 if (expect_false (preparecnt))
1117 { 1792 {
1118 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1119 call_pending (EV_A); 1794 call_pending (EV_A);
1120 } 1795 }
1121 1796
1797 if (expect_false (!activecnt))
1798 break;
1799
1122 /* we might have forked, so reify kernel state if necessary */ 1800 /* we might have forked, so reify kernel state if necessary */
1123 if (expect_false (postfork)) 1801 if (expect_false (postfork))
1124 loop_fork (EV_A); 1802 loop_fork (EV_A);
1125 1803
1126 /* update fd-related kernel structures */ 1804 /* update fd-related kernel structures */
1127 fd_reify (EV_A); 1805 fd_reify (EV_A);
1128 1806
1129 /* calculate blocking time */ 1807 /* calculate blocking time */
1808 {
1809 ev_tstamp waittime = 0.;
1810 ev_tstamp sleeptime = 0.;
1130 1811
1131 /* we only need this for !monotonic clock or timers, but as we basically 1812 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1132 always have timers, we just calculate it always */
1133#if EV_USE_MONOTONIC
1134 if (expect_true (have_monotonic))
1135 time_update_monotonic (EV_A);
1136 else
1137#endif
1138 { 1813 {
1139 rt_now = ev_time (); 1814 /* update time to cancel out callback processing overhead */
1140 mn_now = rt_now; 1815 time_update (EV_A_ 1e100);
1141 }
1142 1816
1143 if (flags & EVLOOP_NONBLOCK || idlecnt)
1144 block = 0.;
1145 else
1146 {
1147 block = MAX_BLOCKTIME; 1817 waittime = MAX_BLOCKTIME;
1148 1818
1149 if (timercnt) 1819 if (timercnt)
1150 { 1820 {
1151 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1821 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1152 if (block > to) block = to; 1822 if (waittime > to) waittime = to;
1153 } 1823 }
1154 1824
1825#if EV_PERIODIC_ENABLE
1155 if (periodiccnt) 1826 if (periodiccnt)
1156 { 1827 {
1157 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1828 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1158 if (block > to) block = to; 1829 if (waittime > to) waittime = to;
1159 } 1830 }
1831#endif
1160 1832
1161 if (block < 0.) block = 0.; 1833 if (expect_false (waittime < timeout_blocktime))
1834 waittime = timeout_blocktime;
1835
1836 sleeptime = waittime - backend_fudge;
1837
1838 if (expect_true (sleeptime > io_blocktime))
1839 sleeptime = io_blocktime;
1840
1841 if (sleeptime)
1842 {
1843 ev_sleep (sleeptime);
1844 waittime -= sleeptime;
1845 }
1162 } 1846 }
1163 1847
1164 method_poll (EV_A_ block); 1848 ++loop_count;
1849 backend_poll (EV_A_ waittime);
1165 1850
1166 /* update rt_now, do magic */ 1851 /* update ev_rt_now, do magic */
1167 time_update (EV_A); 1852 time_update (EV_A_ waittime + sleeptime);
1853 }
1168 1854
1169 /* queue pending timers and reschedule them */ 1855 /* queue pending timers and reschedule them */
1170 timers_reify (EV_A); /* relative timers called last */ 1856 timers_reify (EV_A); /* relative timers called last */
1857#if EV_PERIODIC_ENABLE
1171 periodics_reify (EV_A); /* absolute timers called first */ 1858 periodics_reify (EV_A); /* absolute timers called first */
1859#endif
1172 1860
1861#if EV_IDLE_ENABLE
1173 /* queue idle watchers unless io or timers are pending */ 1862 /* queue idle watchers unless other events are pending */
1174 if (idlecnt && !any_pending (EV_A)) 1863 idle_reify (EV_A);
1175 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1864#endif
1176 1865
1177 /* queue check watchers, to be executed first */ 1866 /* queue check watchers, to be executed first */
1178 if (checkcnt) 1867 if (expect_false (checkcnt))
1179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1868 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1180 1869
1181 call_pending (EV_A); 1870 call_pending (EV_A);
1182 } 1871 }
1183 while (activecnt && !loop_done); 1872 while (expect_true (
1873 activecnt
1874 && !loop_done
1875 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1876 ));
1184 1877
1185 if (loop_done != 2) 1878 if (loop_done == EVUNLOOP_ONE)
1186 loop_done = 0; 1879 loop_done = EVUNLOOP_CANCEL;
1187} 1880}
1188 1881
1189void 1882void
1190ev_unloop (EV_P_ int how) 1883ev_unloop (EV_P_ int how)
1191{ 1884{
1192 loop_done = how; 1885 loop_done = how;
1193} 1886}
1194 1887
1195/*****************************************************************************/ 1888/*****************************************************************************/
1196 1889
1197inline void 1890void inline_size
1198wlist_add (WL *head, WL elem) 1891wlist_add (WL *head, WL elem)
1199{ 1892{
1200 elem->next = *head; 1893 elem->next = *head;
1201 *head = elem; 1894 *head = elem;
1202} 1895}
1203 1896
1204inline void 1897void inline_size
1205wlist_del (WL *head, WL elem) 1898wlist_del (WL *head, WL elem)
1206{ 1899{
1207 while (*head) 1900 while (*head)
1208 { 1901 {
1209 if (*head == elem) 1902 if (*head == elem)
… …
1214 1907
1215 head = &(*head)->next; 1908 head = &(*head)->next;
1216 } 1909 }
1217} 1910}
1218 1911
1219inline void 1912void inline_speed
1220ev_clear_pending (EV_P_ W w) 1913clear_pending (EV_P_ W w)
1221{ 1914{
1222 if (w->pending) 1915 if (w->pending)
1223 { 1916 {
1224 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1917 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1225 w->pending = 0; 1918 w->pending = 0;
1226 } 1919 }
1227} 1920}
1228 1921
1229inline void 1922int
1923ev_clear_pending (EV_P_ void *w)
1924{
1925 W w_ = (W)w;
1926 int pending = w_->pending;
1927
1928 if (expect_true (pending))
1929 {
1930 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1931 w_->pending = 0;
1932 p->w = 0;
1933 return p->events;
1934 }
1935 else
1936 return 0;
1937}
1938
1939void inline_size
1940pri_adjust (EV_P_ W w)
1941{
1942 int pri = w->priority;
1943 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945 w->priority = pri;
1946}
1947
1948void inline_speed
1230ev_start (EV_P_ W w, int active) 1949ev_start (EV_P_ W w, int active)
1231{ 1950{
1232 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1951 pri_adjust (EV_A_ w);
1233 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1234
1235 w->active = active; 1952 w->active = active;
1236 ev_ref (EV_A); 1953 ev_ref (EV_A);
1237} 1954}
1238 1955
1239inline void 1956void inline_size
1240ev_stop (EV_P_ W w) 1957ev_stop (EV_P_ W w)
1241{ 1958{
1242 ev_unref (EV_A); 1959 ev_unref (EV_A);
1243 w->active = 0; 1960 w->active = 0;
1244} 1961}
1245 1962
1246/*****************************************************************************/ 1963/*****************************************************************************/
1247 1964
1248void 1965void noinline
1249ev_io_start (EV_P_ struct ev_io *w) 1966ev_io_start (EV_P_ ev_io *w)
1250{ 1967{
1251 int fd = w->fd; 1968 int fd = w->fd;
1252 1969
1253 if (ev_is_active (w)) 1970 if (expect_false (ev_is_active (w)))
1254 return; 1971 return;
1255 1972
1256 assert (("ev_io_start called with negative fd", fd >= 0)); 1973 assert (("ev_io_start called with negative fd", fd >= 0));
1257 1974
1258 ev_start (EV_A_ (W)w, 1); 1975 ev_start (EV_A_ (W)w, 1);
1259 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1976 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1260 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1977 wlist_add (&anfds[fd].head, (WL)w);
1261 1978
1262 fd_change (EV_A_ fd); 1979 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1980 w->events &= ~EV_IOFDSET;
1263} 1981}
1264 1982
1265void 1983void noinline
1266ev_io_stop (EV_P_ struct ev_io *w) 1984ev_io_stop (EV_P_ ev_io *w)
1267{ 1985{
1268 ev_clear_pending (EV_A_ (W)w); 1986 clear_pending (EV_A_ (W)w);
1269 if (!ev_is_active (w)) 1987 if (expect_false (!ev_is_active (w)))
1270 return; 1988 return;
1271 1989
1990 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1991
1272 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1992 wlist_del (&anfds[w->fd].head, (WL)w);
1273 ev_stop (EV_A_ (W)w); 1993 ev_stop (EV_A_ (W)w);
1274 1994
1275 fd_change (EV_A_ w->fd); 1995 fd_change (EV_A_ w->fd, 1);
1276} 1996}
1277 1997
1278void 1998void noinline
1279ev_timer_start (EV_P_ struct ev_timer *w) 1999ev_timer_start (EV_P_ ev_timer *w)
1280{ 2000{
1281 if (ev_is_active (w)) 2001 if (expect_false (ev_is_active (w)))
1282 return; 2002 return;
1283 2003
1284 ((WT)w)->at += mn_now; 2004 ev_at (w) += mn_now;
1285 2005
1286 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2006 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1287 2007
1288 ev_start (EV_A_ (W)w, ++timercnt); 2008 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1289 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 2009 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1290 timers [timercnt - 1] = w; 2010 ANHE_w (timers [ev_active (w)]) = (WT)w;
1291 upheap ((WT *)timers, timercnt - 1); 2011 ANHE_at_set (timers [ev_active (w)]);
2012 upheap (timers, ev_active (w));
1292 2013
1293 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2014 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1294} 2015}
1295 2016
1296void 2017void noinline
1297ev_timer_stop (EV_P_ struct ev_timer *w) 2018ev_timer_stop (EV_P_ ev_timer *w)
1298{ 2019{
1299 ev_clear_pending (EV_A_ (W)w); 2020 clear_pending (EV_A_ (W)w);
1300 if (!ev_is_active (w)) 2021 if (expect_false (!ev_is_active (w)))
1301 return; 2022 return;
1302 2023
2024 {
2025 int active = ev_active (w);
2026
1303 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2027 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1304 2028
1305 if (((W)w)->active < timercnt--) 2029 if (expect_true (active < timercnt + HEAP0 - 1))
1306 { 2030 {
1307 timers [((W)w)->active - 1] = timers [timercnt]; 2031 timers [active] = timers [timercnt + HEAP0 - 1];
1308 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2032 adjustheap (timers, timercnt, active);
1309 } 2033 }
1310 2034
1311 ((WT)w)->at = w->repeat; 2035 --timercnt;
2036 }
2037
2038 ev_at (w) -= mn_now;
1312 2039
1313 ev_stop (EV_A_ (W)w); 2040 ev_stop (EV_A_ (W)w);
1314} 2041}
1315 2042
1316void 2043void noinline
1317ev_timer_again (EV_P_ struct ev_timer *w) 2044ev_timer_again (EV_P_ ev_timer *w)
1318{ 2045{
1319 if (ev_is_active (w)) 2046 if (ev_is_active (w))
1320 { 2047 {
1321 if (w->repeat) 2048 if (w->repeat)
1322 { 2049 {
1323 ((WT)w)->at = mn_now + w->repeat; 2050 ev_at (w) = mn_now + w->repeat;
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2051 ANHE_at_set (timers [ev_active (w)]);
2052 adjustheap (timers, timercnt, ev_active (w));
1325 } 2053 }
1326 else 2054 else
1327 ev_timer_stop (EV_A_ w); 2055 ev_timer_stop (EV_A_ w);
1328 } 2056 }
1329 else if (w->repeat) 2057 else if (w->repeat)
2058 {
2059 ev_at (w) = w->repeat;
1330 ev_timer_start (EV_A_ w); 2060 ev_timer_start (EV_A_ w);
2061 }
1331} 2062}
1332 2063
1333void 2064#if EV_PERIODIC_ENABLE
2065void noinline
1334ev_periodic_start (EV_P_ struct ev_periodic *w) 2066ev_periodic_start (EV_P_ ev_periodic *w)
1335{ 2067{
1336 if (ev_is_active (w)) 2068 if (expect_false (ev_is_active (w)))
1337 return; 2069 return;
1338 2070
1339 if (w->reschedule_cb) 2071 if (w->reschedule_cb)
1340 ((WT)w)->at = w->reschedule_cb (w, rt_now); 2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1341 else if (w->interval) 2073 else if (w->interval)
1342 { 2074 {
1343 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2075 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1344 /* this formula differs from the one in periodic_reify because we do not always round up */ 2076 /* this formula differs from the one in periodic_reify because we do not always round up */
1345 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 2077 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1346 } 2078 }
2079 else
2080 ev_at (w) = w->offset;
1347 2081
1348 ev_start (EV_A_ (W)w, ++periodiccnt); 2082 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1349 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2083 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1350 periodics [periodiccnt - 1] = w; 2084 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1351 upheap ((WT *)periodics, periodiccnt - 1); 2085 upheap (periodics, ev_active (w));
1352 2086
1353 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2087 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1354} 2088}
1355 2089
1356void 2090void noinline
1357ev_periodic_stop (EV_P_ struct ev_periodic *w) 2091ev_periodic_stop (EV_P_ ev_periodic *w)
1358{ 2092{
1359 ev_clear_pending (EV_A_ (W)w); 2093 clear_pending (EV_A_ (W)w);
1360 if (!ev_is_active (w)) 2094 if (expect_false (!ev_is_active (w)))
1361 return; 2095 return;
1362 2096
2097 {
2098 int active = ev_active (w);
2099
1363 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2100 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1364 2101
1365 if (((W)w)->active < periodiccnt--) 2102 if (expect_true (active < periodiccnt + HEAP0 - 1))
1366 { 2103 {
1367 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2104 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1368 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2105 adjustheap (periodics, periodiccnt, active);
1369 } 2106 }
2107
2108 --periodiccnt;
2109 }
1370 2110
1371 ev_stop (EV_A_ (W)w); 2111 ev_stop (EV_A_ (W)w);
1372} 2112}
1373 2113
1374void 2114void noinline
1375ev_periodic_again (EV_P_ struct ev_periodic *w) 2115ev_periodic_again (EV_P_ ev_periodic *w)
1376{ 2116{
2117 /* TODO: use adjustheap and recalculation */
1377 ev_periodic_stop (EV_A_ w); 2118 ev_periodic_stop (EV_A_ w);
1378 ev_periodic_start (EV_A_ w); 2119 ev_periodic_start (EV_A_ w);
1379} 2120}
1380 2121#endif
1381void
1382ev_idle_start (EV_P_ struct ev_idle *w)
1383{
1384 if (ev_is_active (w))
1385 return;
1386
1387 ev_start (EV_A_ (W)w, ++idlecnt);
1388 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1389 idles [idlecnt - 1] = w;
1390}
1391
1392void
1393ev_idle_stop (EV_P_ struct ev_idle *w)
1394{
1395 ev_clear_pending (EV_A_ (W)w);
1396 if (ev_is_active (w))
1397 return;
1398
1399 idles [((W)w)->active - 1] = idles [--idlecnt];
1400 ev_stop (EV_A_ (W)w);
1401}
1402
1403void
1404ev_prepare_start (EV_P_ struct ev_prepare *w)
1405{
1406 if (ev_is_active (w))
1407 return;
1408
1409 ev_start (EV_A_ (W)w, ++preparecnt);
1410 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1411 prepares [preparecnt - 1] = w;
1412}
1413
1414void
1415ev_prepare_stop (EV_P_ struct ev_prepare *w)
1416{
1417 ev_clear_pending (EV_A_ (W)w);
1418 if (ev_is_active (w))
1419 return;
1420
1421 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1422 ev_stop (EV_A_ (W)w);
1423}
1424
1425void
1426ev_check_start (EV_P_ struct ev_check *w)
1427{
1428 if (ev_is_active (w))
1429 return;
1430
1431 ev_start (EV_A_ (W)w, ++checkcnt);
1432 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1433 checks [checkcnt - 1] = w;
1434}
1435
1436void
1437ev_check_stop (EV_P_ struct ev_check *w)
1438{
1439 ev_clear_pending (EV_A_ (W)w);
1440 if (ev_is_active (w))
1441 return;
1442
1443 checks [((W)w)->active - 1] = checks [--checkcnt];
1444 ev_stop (EV_A_ (W)w);
1445}
1446 2122
1447#ifndef SA_RESTART 2123#ifndef SA_RESTART
1448# define SA_RESTART 0 2124# define SA_RESTART 0
1449#endif 2125#endif
1450 2126
1451void 2127void noinline
1452ev_signal_start (EV_P_ struct ev_signal *w) 2128ev_signal_start (EV_P_ ev_signal *w)
1453{ 2129{
1454#if EV_MULTIPLICITY 2130#if EV_MULTIPLICITY
1455 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2131 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1456#endif 2132#endif
1457 if (ev_is_active (w)) 2133 if (expect_false (ev_is_active (w)))
1458 return; 2134 return;
1459 2135
1460 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2136 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1461 2137
2138 evpipe_init (EV_A);
2139
2140 {
2141#ifndef _WIN32
2142 sigset_t full, prev;
2143 sigfillset (&full);
2144 sigprocmask (SIG_SETMASK, &full, &prev);
2145#endif
2146
2147 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2148
2149#ifndef _WIN32
2150 sigprocmask (SIG_SETMASK, &prev, 0);
2151#endif
2152 }
2153
1462 ev_start (EV_A_ (W)w, 1); 2154 ev_start (EV_A_ (W)w, 1);
1463 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1464 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2155 wlist_add (&signals [w->signum - 1].head, (WL)w);
1465 2156
1466 if (!((WL)w)->next) 2157 if (!((WL)w)->next)
1467 { 2158 {
1468#if WIN32 2159#if _WIN32
1469 signal (w->signum, sighandler); 2160 signal (w->signum, ev_sighandler);
1470#else 2161#else
1471 struct sigaction sa; 2162 struct sigaction sa;
1472 sa.sa_handler = sighandler; 2163 sa.sa_handler = ev_sighandler;
1473 sigfillset (&sa.sa_mask); 2164 sigfillset (&sa.sa_mask);
1474 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2165 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1475 sigaction (w->signum, &sa, 0); 2166 sigaction (w->signum, &sa, 0);
1476#endif 2167#endif
1477 } 2168 }
1478} 2169}
1479 2170
1480void 2171void noinline
1481ev_signal_stop (EV_P_ struct ev_signal *w) 2172ev_signal_stop (EV_P_ ev_signal *w)
1482{ 2173{
1483 ev_clear_pending (EV_A_ (W)w); 2174 clear_pending (EV_A_ (W)w);
1484 if (!ev_is_active (w)) 2175 if (expect_false (!ev_is_active (w)))
1485 return; 2176 return;
1486 2177
1487 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2178 wlist_del (&signals [w->signum - 1].head, (WL)w);
1488 ev_stop (EV_A_ (W)w); 2179 ev_stop (EV_A_ (W)w);
1489 2180
1490 if (!signals [w->signum - 1].head) 2181 if (!signals [w->signum - 1].head)
1491 signal (w->signum, SIG_DFL); 2182 signal (w->signum, SIG_DFL);
1492} 2183}
1493 2184
1494void 2185void
1495ev_child_start (EV_P_ struct ev_child *w) 2186ev_child_start (EV_P_ ev_child *w)
1496{ 2187{
1497#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1498 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2189 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499#endif 2190#endif
1500 if (ev_is_active (w)) 2191 if (expect_false (ev_is_active (w)))
1501 return; 2192 return;
1502 2193
1503 ev_start (EV_A_ (W)w, 1); 2194 ev_start (EV_A_ (W)w, 1);
1504 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2195 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1505} 2196}
1506 2197
1507void 2198void
1508ev_child_stop (EV_P_ struct ev_child *w) 2199ev_child_stop (EV_P_ ev_child *w)
1509{ 2200{
1510 ev_clear_pending (EV_A_ (W)w); 2201 clear_pending (EV_A_ (W)w);
1511 if (ev_is_active (w)) 2202 if (expect_false (!ev_is_active (w)))
1512 return; 2203 return;
1513 2204
1514 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2205 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1515 ev_stop (EV_A_ (W)w); 2206 ev_stop (EV_A_ (W)w);
1516} 2207}
1517 2208
2209#if EV_STAT_ENABLE
2210
2211# ifdef _WIN32
2212# undef lstat
2213# define lstat(a,b) _stati64 (a,b)
2214# endif
2215
2216#define DEF_STAT_INTERVAL 5.0074891
2217#define MIN_STAT_INTERVAL 0.1074891
2218
2219static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220
2221#if EV_USE_INOTIFY
2222# define EV_INOTIFY_BUFSIZE 8192
2223
2224static void noinline
2225infy_add (EV_P_ ev_stat *w)
2226{
2227 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);
2228
2229 if (w->wd < 0)
2230 {
2231 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2232
2233 /* monitor some parent directory for speedup hints */
2234 /* note that exceeding the hardcoded limit is not a correctness issue, */
2235 /* but an efficiency issue only */
2236 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237 {
2238 char path [4096];
2239 strcpy (path, w->path);
2240
2241 do
2242 {
2243 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245
2246 char *pend = strrchr (path, '/');
2247
2248 if (!pend)
2249 break; /* whoops, no '/', complain to your admin */
2250
2251 *pend = 0;
2252 w->wd = inotify_add_watch (fs_fd, path, mask);
2253 }
2254 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255 }
2256 }
2257 else
2258 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259
2260 if (w->wd >= 0)
2261 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2262}
2263
2264static void noinline
2265infy_del (EV_P_ ev_stat *w)
2266{
2267 int slot;
2268 int wd = w->wd;
2269
2270 if (wd < 0)
2271 return;
2272
2273 w->wd = -2;
2274 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2275 wlist_del (&fs_hash [slot].head, (WL)w);
2276
2277 /* remove this watcher, if others are watching it, they will rearm */
2278 inotify_rm_watch (fs_fd, wd);
2279}
2280
2281static void noinline
2282infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283{
2284 if (slot < 0)
2285 /* overflow, need to check for all hahs slots */
2286 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2287 infy_wd (EV_A_ slot, wd, ev);
2288 else
2289 {
2290 WL w_;
2291
2292 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2293 {
2294 ev_stat *w = (ev_stat *)w_;
2295 w_ = w_->next; /* lets us remove this watcher and all before it */
2296
2297 if (w->wd == wd || wd == -1)
2298 {
2299 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300 {
2301 w->wd = -1;
2302 infy_add (EV_A_ w); /* re-add, no matter what */
2303 }
2304
2305 stat_timer_cb (EV_A_ &w->timer, 0);
2306 }
2307 }
2308 }
2309}
2310
2311static void
2312infy_cb (EV_P_ ev_io *w, int revents)
2313{
2314 char buf [EV_INOTIFY_BUFSIZE];
2315 struct inotify_event *ev = (struct inotify_event *)buf;
2316 int ofs;
2317 int len = read (fs_fd, buf, sizeof (buf));
2318
2319 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2320 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2321}
2322
2323void inline_size
2324infy_init (EV_P)
2325{
2326 if (fs_fd != -2)
2327 return;
2328
2329 fs_fd = inotify_init ();
2330
2331 if (fs_fd >= 0)
2332 {
2333 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2334 ev_set_priority (&fs_w, EV_MAXPRI);
2335 ev_io_start (EV_A_ &fs_w);
2336 }
2337}
2338
2339void inline_size
2340infy_fork (EV_P)
2341{
2342 int slot;
2343
2344 if (fs_fd < 0)
2345 return;
2346
2347 close (fs_fd);
2348 fs_fd = inotify_init ();
2349
2350 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2351 {
2352 WL w_ = fs_hash [slot].head;
2353 fs_hash [slot].head = 0;
2354
2355 while (w_)
2356 {
2357 ev_stat *w = (ev_stat *)w_;
2358 w_ = w_->next; /* lets us add this watcher */
2359
2360 w->wd = -1;
2361
2362 if (fs_fd >= 0)
2363 infy_add (EV_A_ w); /* re-add, no matter what */
2364 else
2365 ev_timer_start (EV_A_ &w->timer);
2366 }
2367
2368 }
2369}
2370
2371#endif
2372
2373void
2374ev_stat_stat (EV_P_ ev_stat *w)
2375{
2376 if (lstat (w->path, &w->attr) < 0)
2377 w->attr.st_nlink = 0;
2378 else if (!w->attr.st_nlink)
2379 w->attr.st_nlink = 1;
2380}
2381
2382static void noinline
2383stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2384{
2385 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2386
2387 /* we copy this here each the time so that */
2388 /* prev has the old value when the callback gets invoked */
2389 w->prev = w->attr;
2390 ev_stat_stat (EV_A_ w);
2391
2392 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2393 if (
2394 w->prev.st_dev != w->attr.st_dev
2395 || w->prev.st_ino != w->attr.st_ino
2396 || w->prev.st_mode != w->attr.st_mode
2397 || w->prev.st_nlink != w->attr.st_nlink
2398 || w->prev.st_uid != w->attr.st_uid
2399 || w->prev.st_gid != w->attr.st_gid
2400 || w->prev.st_rdev != w->attr.st_rdev
2401 || w->prev.st_size != w->attr.st_size
2402 || w->prev.st_atime != w->attr.st_atime
2403 || w->prev.st_mtime != w->attr.st_mtime
2404 || w->prev.st_ctime != w->attr.st_ctime
2405 ) {
2406 #if EV_USE_INOTIFY
2407 infy_del (EV_A_ w);
2408 infy_add (EV_A_ w);
2409 ev_stat_stat (EV_A_ w); /* avoid race... */
2410 #endif
2411
2412 ev_feed_event (EV_A_ w, EV_STAT);
2413 }
2414}
2415
2416void
2417ev_stat_start (EV_P_ ev_stat *w)
2418{
2419 if (expect_false (ev_is_active (w)))
2420 return;
2421
2422 /* since we use memcmp, we need to clear any padding data etc. */
2423 memset (&w->prev, 0, sizeof (ev_statdata));
2424 memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426 ev_stat_stat (EV_A_ w);
2427
2428 if (w->interval < MIN_STAT_INTERVAL)
2429 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430
2431 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2432 ev_set_priority (&w->timer, ev_priority (w));
2433
2434#if EV_USE_INOTIFY
2435 infy_init (EV_A);
2436
2437 if (fs_fd >= 0)
2438 infy_add (EV_A_ w);
2439 else
2440#endif
2441 ev_timer_start (EV_A_ &w->timer);
2442
2443 ev_start (EV_A_ (W)w, 1);
2444}
2445
2446void
2447ev_stat_stop (EV_P_ ev_stat *w)
2448{
2449 clear_pending (EV_A_ (W)w);
2450 if (expect_false (!ev_is_active (w)))
2451 return;
2452
2453#if EV_USE_INOTIFY
2454 infy_del (EV_A_ w);
2455#endif
2456 ev_timer_stop (EV_A_ &w->timer);
2457
2458 ev_stop (EV_A_ (W)w);
2459}
2460#endif
2461
2462#if EV_IDLE_ENABLE
2463void
2464ev_idle_start (EV_P_ ev_idle *w)
2465{
2466 if (expect_false (ev_is_active (w)))
2467 return;
2468
2469 pri_adjust (EV_A_ (W)w);
2470
2471 {
2472 int active = ++idlecnt [ABSPRI (w)];
2473
2474 ++idleall;
2475 ev_start (EV_A_ (W)w, active);
2476
2477 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478 idles [ABSPRI (w)][active - 1] = w;
2479 }
2480}
2481
2482void
2483ev_idle_stop (EV_P_ ev_idle *w)
2484{
2485 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w)))
2487 return;
2488
2489 {
2490 int active = ev_active (w);
2491
2492 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494
2495 ev_stop (EV_A_ (W)w);
2496 --idleall;
2497 }
2498}
2499#endif
2500
2501void
2502ev_prepare_start (EV_P_ ev_prepare *w)
2503{
2504 if (expect_false (ev_is_active (w)))
2505 return;
2506
2507 ev_start (EV_A_ (W)w, ++preparecnt);
2508 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509 prepares [preparecnt - 1] = w;
2510}
2511
2512void
2513ev_prepare_stop (EV_P_ ev_prepare *w)
2514{
2515 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w)))
2517 return;
2518
2519 {
2520 int active = ev_active (w);
2521
2522 prepares [active - 1] = prepares [--preparecnt];
2523 ev_active (prepares [active - 1]) = active;
2524 }
2525
2526 ev_stop (EV_A_ (W)w);
2527}
2528
2529void
2530ev_check_start (EV_P_ ev_check *w)
2531{
2532 if (expect_false (ev_is_active (w)))
2533 return;
2534
2535 ev_start (EV_A_ (W)w, ++checkcnt);
2536 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537 checks [checkcnt - 1] = w;
2538}
2539
2540void
2541ev_check_stop (EV_P_ ev_check *w)
2542{
2543 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w)))
2545 return;
2546
2547 {
2548 int active = ev_active (w);
2549
2550 checks [active - 1] = checks [--checkcnt];
2551 ev_active (checks [active - 1]) = active;
2552 }
2553
2554 ev_stop (EV_A_ (W)w);
2555}
2556
2557#if EV_EMBED_ENABLE
2558void noinline
2559ev_embed_sweep (EV_P_ ev_embed *w)
2560{
2561 ev_loop (w->other, EVLOOP_NONBLOCK);
2562}
2563
2564static void
2565embed_io_cb (EV_P_ ev_io *io, int revents)
2566{
2567 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2568
2569 if (ev_cb (w))
2570 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2571 else
2572 ev_loop (w->other, EVLOOP_NONBLOCK);
2573}
2574
2575static void
2576embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2577{
2578 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2579
2580 {
2581 struct ev_loop *loop = w->other;
2582
2583 while (fdchangecnt)
2584 {
2585 fd_reify (EV_A);
2586 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2587 }
2588 }
2589}
2590
2591#if 0
2592static void
2593embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2594{
2595 ev_idle_stop (EV_A_ idle);
2596}
2597#endif
2598
2599void
2600ev_embed_start (EV_P_ ev_embed *w)
2601{
2602 if (expect_false (ev_is_active (w)))
2603 return;
2604
2605 {
2606 struct ev_loop *loop = w->other;
2607 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609 }
2610
2611 ev_set_priority (&w->io, ev_priority (w));
2612 ev_io_start (EV_A_ &w->io);
2613
2614 ev_prepare_init (&w->prepare, embed_prepare_cb);
2615 ev_set_priority (&w->prepare, EV_MINPRI);
2616 ev_prepare_start (EV_A_ &w->prepare);
2617
2618 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619
2620 ev_start (EV_A_ (W)w, 1);
2621}
2622
2623void
2624ev_embed_stop (EV_P_ ev_embed *w)
2625{
2626 clear_pending (EV_A_ (W)w);
2627 if (expect_false (!ev_is_active (w)))
2628 return;
2629
2630 ev_io_stop (EV_A_ &w->io);
2631 ev_prepare_stop (EV_A_ &w->prepare);
2632
2633 ev_stop (EV_A_ (W)w);
2634}
2635#endif
2636
2637#if EV_FORK_ENABLE
2638void
2639ev_fork_start (EV_P_ ev_fork *w)
2640{
2641 if (expect_false (ev_is_active (w)))
2642 return;
2643
2644 ev_start (EV_A_ (W)w, ++forkcnt);
2645 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646 forks [forkcnt - 1] = w;
2647}
2648
2649void
2650ev_fork_stop (EV_P_ ev_fork *w)
2651{
2652 clear_pending (EV_A_ (W)w);
2653 if (expect_false (!ev_is_active (w)))
2654 return;
2655
2656 {
2657 int active = ev_active (w);
2658
2659 forks [active - 1] = forks [--forkcnt];
2660 ev_active (forks [active - 1]) = active;
2661 }
2662
2663 ev_stop (EV_A_ (W)w);
2664}
2665#endif
2666
2667#if EV_ASYNC_ENABLE
2668void
2669ev_async_start (EV_P_ ev_async *w)
2670{
2671 if (expect_false (ev_is_active (w)))
2672 return;
2673
2674 evpipe_init (EV_A);
2675
2676 ev_start (EV_A_ (W)w, ++asynccnt);
2677 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678 asyncs [asynccnt - 1] = w;
2679}
2680
2681void
2682ev_async_stop (EV_P_ ev_async *w)
2683{
2684 clear_pending (EV_A_ (W)w);
2685 if (expect_false (!ev_is_active (w)))
2686 return;
2687
2688 {
2689 int active = ev_active (w);
2690
2691 asyncs [active - 1] = asyncs [--asynccnt];
2692 ev_active (asyncs [active - 1]) = active;
2693 }
2694
2695 ev_stop (EV_A_ (W)w);
2696}
2697
2698void
2699ev_async_send (EV_P_ ev_async *w)
2700{
2701 w->sent = 1;
2702 evpipe_write (EV_A_ &gotasync);
2703}
2704#endif
2705
1518/*****************************************************************************/ 2706/*****************************************************************************/
1519 2707
1520struct ev_once 2708struct ev_once
1521{ 2709{
1522 struct ev_io io; 2710 ev_io io;
1523 struct ev_timer to; 2711 ev_timer to;
1524 void (*cb)(int revents, void *arg); 2712 void (*cb)(int revents, void *arg);
1525 void *arg; 2713 void *arg;
1526}; 2714};
1527 2715
1528static void 2716static void
… …
1537 2725
1538 cb (revents, arg); 2726 cb (revents, arg);
1539} 2727}
1540 2728
1541static void 2729static void
1542once_cb_io (EV_P_ struct ev_io *w, int revents) 2730once_cb_io (EV_P_ ev_io *w, int revents)
1543{ 2731{
1544 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2732 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1545} 2733}
1546 2734
1547static void 2735static void
1548once_cb_to (EV_P_ struct ev_timer *w, int revents) 2736once_cb_to (EV_P_ ev_timer *w, int revents)
1549{ 2737{
1550 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2738 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1551} 2739}
1552 2740
1553void 2741void
1554ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2742ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1555{ 2743{
1556 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2744 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1557 2745
1558 if (!once) 2746 if (expect_false (!once))
2747 {
1559 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2748 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1560 else 2749 return;
1561 { 2750 }
2751
1562 once->cb = cb; 2752 once->cb = cb;
1563 once->arg = arg; 2753 once->arg = arg;
1564 2754
1565 ev_watcher_init (&once->io, once_cb_io); 2755 ev_init (&once->io, once_cb_io);
1566 if (fd >= 0) 2756 if (fd >= 0)
1567 { 2757 {
1568 ev_io_set (&once->io, fd, events); 2758 ev_io_set (&once->io, fd, events);
1569 ev_io_start (EV_A_ &once->io); 2759 ev_io_start (EV_A_ &once->io);
1570 } 2760 }
1571 2761
1572 ev_watcher_init (&once->to, once_cb_to); 2762 ev_init (&once->to, once_cb_to);
1573 if (timeout >= 0.) 2763 if (timeout >= 0.)
1574 { 2764 {
1575 ev_timer_set (&once->to, timeout, 0.); 2765 ev_timer_set (&once->to, timeout, 0.);
1576 ev_timer_start (EV_A_ &once->to); 2766 ev_timer_start (EV_A_ &once->to);
1577 }
1578 } 2767 }
1579} 2768}
1580 2769
2770#if EV_MULTIPLICITY
2771 #include "ev_wrap.h"
2772#endif
2773
2774#ifdef __cplusplus
2775}
2776#endif
2777

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