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Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.200 by root, Wed Dec 26 08:06:09 2007 UTC

… …
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 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#ifndef EV_STANDALONE
31#if EV_USE_CONFIG_H 45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
32# include "config.h" 48# include "config.h"
49# endif
50
51# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC
53# define EV_USE_MONOTONIC 1
54# endif
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 1
57# endif
58# else
59# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0
61# endif
62# ifndef EV_USE_REALTIME
63# define EV_USE_REALTIME 0
64# endif
65# endif
66
67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
73# endif
74
75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
81# endif
82
83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
89# endif
90
91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93# define EV_USE_EPOLL 1
94# else
95# define EV_USE_EPOLL 0
96# endif
97# endif
98
99# ifndef EV_USE_KQUEUE
100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif
105# endif
106
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE
109# define EV_USE_PORT 1
110# else
111# define EV_USE_PORT 0
112# endif
113# endif
114
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1
118# else
119# define EV_USE_INOTIFY 0
120# endif
121# endif
122
33#endif 123#endif
34 124
35#include <math.h> 125#include <math.h>
36#include <stdlib.h> 126#include <stdlib.h>
37#include <unistd.h>
38#include <fcntl.h> 127#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 128#include <stddef.h>
41 129
42#include <stdio.h> 130#include <stdio.h>
43 131
44#include <assert.h> 132#include <assert.h>
45#include <errno.h> 133#include <errno.h>
46#include <sys/types.h> 134#include <sys/types.h>
47#include <sys/wait.h>
48#include <sys/time.h>
49#include <time.h> 135#include <time.h>
50 136
137#include <signal.h>
138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
145#ifndef _WIN32
146# include <sys/time.h>
147# include <sys/wait.h>
148# include <unistd.h>
149#else
150# define WIN32_LEAN_AND_MEAN
151# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1
154# endif
155#endif
156
51/**/ 157/**/
52 158
53#ifndef EV_USE_MONOTONIC 159#ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 160# define EV_USE_MONOTONIC 0
161#endif
162
163#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0
165#endif
166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
55#endif 169#endif
56 170
57#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
58# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
59#endif 173#endif
60 174
175#ifndef EV_USE_POLL
176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
180# endif
181#endif
182
61#ifndef EV_USE_EPOLL 183#ifndef EV_USE_EPOLL
62# define EV_USE_EPOLL 0 184# define EV_USE_EPOLL 0
63#endif 185#endif
64 186
187#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0
189#endif
190
65#ifndef EV_USE_REALTIME 191#ifndef EV_USE_PORT
66# define EV_USE_REALTIME 1 192# define EV_USE_PORT 0
193#endif
194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
67#endif 213#endif
68 214
69/**/ 215/**/
70 216
71#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
… …
76#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
77# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
79#endif 225#endif
80 226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
242#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h>
244#endif
245
81/**/ 246/**/
82 247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
83#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
84#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
85#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
86/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
87 261
88#include "ev.h"
89
90#if __GNUC__ >= 3 262#if __GNUC__ >= 4
91# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
92# define inline inline 264# define noinline __attribute__ ((noinline))
93#else 265#else
94# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
95# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
96#endif 271#endif
97 272
98#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
99#define expect_true(expr) expect ((expr) != 0, 1) 274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
100 276
277#if EV_MINIMAL
278# define inline_speed static noinline
279#else
280# define inline_speed static inline
281#endif
282
283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
101typedef struct ev_watcher *W; 289typedef ev_watcher *W;
102typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
103typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
104 292
105static ev_tstamp now_floor, now, diff; /* monotonic clock */ 293#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
298
299#ifdef _WIN32
300# include "ev_win32.c"
301#endif
302
303/*****************************************************************************/
304
305static void (*syserr_cb)(const char *msg);
306
307void
308ev_set_syserr_cb (void (*cb)(const char *msg))
309{
310 syserr_cb = cb;
311}
312
313static void noinline
314syserr (const char *msg)
315{
316 if (!msg)
317 msg = "(libev) system error";
318
319 if (syserr_cb)
320 syserr_cb (msg);
321 else
322 {
323 perror (msg);
324 abort ();
325 }
326}
327
328static void *(*alloc)(void *ptr, long size);
329
330void
331ev_set_allocator (void *(*cb)(void *ptr, long size))
332{
333 alloc = cb;
334}
335
336inline_speed void *
337ev_realloc (void *ptr, long size)
338{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
340
341 if (!ptr && size)
342 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort ();
345 }
346
347 return ptr;
348}
349
350#define ev_malloc(size) ev_realloc (0, (size))
351#define ev_free(ptr) ev_realloc ((ptr), 0)
352
353/*****************************************************************************/
354
355typedef struct
356{
357 WL head;
358 unsigned char events;
359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
363} ANFD;
364
365typedef struct
366{
367 W w;
368 int events;
369} ANPENDING;
370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
378#if EV_MULTIPLICITY
379
380 struct ev_loop
381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
384 #define VAR(name,decl) decl;
385 #include "ev_vars.h"
386 #undef VAR
387 };
388 #include "ev_wrap.h"
389
390 static struct ev_loop default_loop_struct;
391 struct ev_loop *ev_default_loop_ptr;
392
393#else
394
106ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
107int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
108 399
109static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
110 401
111static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
112static void (*method_modify)(int fd, int oev, int nev);
113static void (*method_poll)(ev_tstamp timeout);
114 403
115/*****************************************************************************/ 404/*****************************************************************************/
116 405
117ev_tstamp 406ev_tstamp
118ev_time (void) 407ev_time (void)
… …
126 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
127 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
128#endif 417#endif
129} 418}
130 419
131static ev_tstamp 420ev_tstamp inline_size
132get_clock (void) 421get_clock (void)
133{ 422{
134#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
135 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
136 { 425 {
… …
141#endif 430#endif
142 431
143 return ev_time (); 432 return ev_time ();
144} 433}
145 434
146#define array_roundsize(base,n) ((n) | 4 & ~3) 435#if EV_MULTIPLICITY
436ev_tstamp
437ev_now (EV_P)
438{
439 return ev_rt_now;
440}
441#endif
147 442
148#define array_needsize(base,cur,cnt,init) \ 443void
149 if (expect_false ((cnt) > cur)) \ 444ev_sleep (ev_tstamp delay)
150 { \ 445{
151 int newcnt = cur; \ 446 if (delay > 0.)
152 do \
153 { \
154 newcnt = array_roundsize (base, newcnt << 1); \
155 } \
156 while ((cnt) > newcnt); \
157 \
158 base = realloc (base, sizeof (*base) * (newcnt)); \
159 init (base + cur, newcnt - cur); \
160 cur = newcnt; \
161 } 447 {
448#if EV_USE_NANOSLEEP
449 struct timespec ts;
450
451 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0);
455#elif defined(_WIN32)
456 Sleep (delay * 1e3);
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
162 467
163/*****************************************************************************/ 468/*****************************************************************************/
164 469
165typedef struct 470int inline_size
471array_nextsize (int elem, int cur, int cnt)
166{ 472{
167 struct ev_io *head; 473 int ncur = cur + 1;
168 unsigned char events;
169 unsigned char reify;
170} ANFD;
171 474
172static ANFD *anfds; 475 do
173static int anfdmax; 476 ncur <<= 1;
477 while (cnt > ncur);
174 478
175static void 479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
497
498#define array_needsize(type,base,cur,cnt,init) \
499 if (expect_false ((cnt) > (cur))) \
500 { \
501 int ocur_ = (cur); \
502 (base) = (type *)array_realloc \
503 (sizeof (type), (base), &(cur), (cnt)); \
504 init ((base) + (ocur_), (cur) - ocur_); \
505 }
506
507#if 0
508#define array_slim(type,stem) \
509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
510 { \
511 stem ## max = array_roundsize (stem ## cnt >> 1); \
512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514 }
515#endif
516
517#define array_free(stem, idx) \
518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
519
520/*****************************************************************************/
521
522void noinline
523ev_feed_event (EV_P_ void *w, int revents)
524{
525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
527
528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
531 {
532 w_->pending = ++pendingcnt [pri];
533 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents;
536 }
537}
538
539void inline_speed
540queue_events (EV_P_ W *events, int eventcnt, int type)
541{
542 int i;
543
544 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type);
546}
547
548/*****************************************************************************/
549
550void inline_size
176anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
177{ 552{
178 while (count--) 553 while (count--)
179 { 554 {
180 base->head = 0; 555 base->head = 0;
… …
183 558
184 ++base; 559 ++base;
185 } 560 }
186} 561}
187 562
188typedef struct 563void inline_speed
189{
190 W w;
191 int events;
192} ANPENDING;
193
194static ANPENDING *pendings;
195static int pendingmax, pendingcnt;
196
197static void
198event (W w, int events)
199{
200 if (w->pending)
201 {
202 pendings [w->pending - 1].events |= events;
203 return;
204 }
205
206 w->pending = ++pendingcnt;
207 array_needsize (pendings, pendingmax, pendingcnt, );
208 pendings [pendingcnt - 1].w = w;
209 pendings [pendingcnt - 1].events = events;
210}
211
212static void
213queue_events (W *events, int eventcnt, int type)
214{
215 int i;
216
217 for (i = 0; i < eventcnt; ++i)
218 event (events [i], type);
219}
220
221static void
222fd_event (int fd, int events) 564fd_event (EV_P_ int fd, int revents)
223{ 565{
224 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
225 struct ev_io *w; 567 ev_io *w;
226 568
227 for (w = anfd->head; w; w = w->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
228 { 570 {
229 int ev = w->events & events; 571 int ev = w->events & revents;
230 572
231 if (ev) 573 if (ev)
232 event ((W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
233 } 575 }
234} 576}
235 577
236/*****************************************************************************/ 578void
579ev_feed_fd_event (EV_P_ int fd, int revents)
580{
581 if (fd >= 0 && fd < anfdmax)
582 fd_event (EV_A_ fd, revents);
583}
237 584
238static int *fdchanges; 585void inline_size
239static int fdchangemax, fdchangecnt; 586fd_reify (EV_P)
240
241static void
242fd_reify (void)
243{ 587{
244 int i; 588 int i;
245 589
246 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
247 { 591 {
248 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
249 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 594 ev_io *w;
251 595
252 int events = 0; 596 unsigned char events = 0;
253 597
254 for (w = anfd->head; w; w = w->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
255 events |= w->events; 599 events |= (unsigned char)w->events;
256 600
257 anfd->reify = 0; 601#if EV_SELECT_IS_WINSOCKET
258 602 if (events)
259 if (anfd->events != events)
260 { 603 {
261 method_modify (fd, anfd->events, events); 604 unsigned long argp;
262 anfd->events = events; 605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
608 anfd->handle = _get_osfhandle (fd);
609 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
263 } 611 }
612#endif
613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
618 anfd->reify = 0;
619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
264 } 624 }
265 625
266 fdchangecnt = 0; 626 fdchangecnt = 0;
267} 627}
268 628
269static void 629void inline_size
270fd_change (int fd) 630fd_change (EV_P_ int fd, int flags)
271{ 631{
272 if (anfds [fd].reify || fdchangecnt < 0) 632 unsigned char reify = anfds [fd].reify;
273 return;
274
275 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
276 634
635 if (expect_true (!reify))
636 {
277 ++fdchangecnt; 637 ++fdchangecnt;
278 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
279 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
641}
642
643void inline_speed
644fd_kill (EV_P_ int fd)
645{
646 ev_io *w;
647
648 while ((w = (ev_io *)anfds [fd].head))
649 {
650 ev_io_stop (EV_A_ w);
651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652 }
653}
654
655int inline_size
656fd_valid (int fd)
657{
658#ifdef _WIN32
659 return _get_osfhandle (fd) != -1;
660#else
661 return fcntl (fd, F_GETFD) != -1;
662#endif
280} 663}
281 664
282/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
283static void 666static void noinline
284fd_recheck (void) 667fd_ebadf (EV_P)
285{ 668{
286 int fd; 669 int fd;
287 670
288 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
289 if (anfds [fd].events) 672 if (anfds [fd].events)
290 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
291 while (anfds [fd].head) 674 fd_kill (EV_A_ fd);
675}
676
677/* called on ENOMEM in select/poll to kill some fds and retry */
678static void noinline
679fd_enomem (EV_P)
680{
681 int fd;
682
683 for (fd = anfdmax; fd--; )
684 if (anfds [fd].events)
292 { 685 {
293 ev_io_stop (anfds [fd].head); 686 fd_kill (EV_A_ fd);
294 event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); 687 return;
295 } 688 }
689}
690
691/* usually called after fork if backend needs to re-arm all fds from scratch */
692static void noinline
693fd_rearm_all (EV_P)
694{
695 int fd;
696
697 for (fd = 0; fd < anfdmax; ++fd)
698 if (anfds [fd].events)
699 {
700 anfds [fd].events = 0;
701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
702 }
296} 703}
297 704
298/*****************************************************************************/ 705/*****************************************************************************/
299 706
300static struct ev_timer **timers; 707void inline_speed
301static int timermax, timercnt;
302
303static struct ev_periodic **periodics;
304static int periodicmax, periodiccnt;
305
306static void
307upheap (WT *timers, int k) 708upheap (WT *heap, int k)
308{ 709{
309 WT w = timers [k]; 710 WT w = heap [k];
310 711
311 while (k && timers [k >> 1]->at > w->at) 712 while (k)
312 {
313 timers [k] = timers [k >> 1];
314 timers [k]->active = k + 1;
315 k >>= 1;
316 } 713 {
317
318 timers [k] = w;
319 timers [k]->active = k + 1;
320
321}
322
323static void
324downheap (WT *timers, int N, int k)
325{
326 WT w = timers [k];
327
328 while (k < (N >> 1))
329 {
330 int j = k << 1; 714 int p = (k - 1) >> 1;
331 715
332 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 716 if (heap [p]->at <= w->at)
333 ++j;
334
335 if (w->at <= timers [j]->at)
336 break; 717 break;
337 718
338 timers [k] = timers [j]; 719 heap [k] = heap [p];
339 timers [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
340 k = j; 721 k = p;
722 }
723
724 heap [k] = w;
725 ((W)heap [k])->active = k + 1;
726}
727
728void inline_speed
729downheap (WT *heap, int N, int k)
730{
731 WT w = heap [k];
732
733 for (;;)
341 } 734 {
735 int c = (k << 1) + 1;
342 736
737 if (c >= N)
738 break;
739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
746 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1;
748
749 k = c;
750 }
751
343 timers [k] = w; 752 heap [k] = w;
344 timers [k]->active = k + 1; 753 ((W)heap [k])->active = k + 1;
754}
755
756void inline_size
757adjustheap (WT *heap, int N, int k)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
345} 761}
346 762
347/*****************************************************************************/ 763/*****************************************************************************/
348 764
349typedef struct 765typedef struct
350{ 766{
351 struct ev_signal *head; 767 WL head;
352 sig_atomic_t volatile gotsig; 768 sig_atomic_t volatile gotsig;
353} ANSIG; 769} ANSIG;
354 770
355static ANSIG *signals; 771static ANSIG *signals;
356static int signalmax; 772static int signalmax;
357 773
358static int sigpipe [2]; 774static int sigpipe [2];
359static sig_atomic_t volatile gotsig; 775static sig_atomic_t volatile gotsig;
360static struct ev_io sigev; 776static ev_io sigev;
361 777
362static void 778void inline_size
363signals_init (ANSIG *base, int count) 779signals_init (ANSIG *base, int count)
364{ 780{
365 while (count--) 781 while (count--)
366 { 782 {
367 base->head = 0; 783 base->head = 0;
… …
372} 788}
373 789
374static void 790static void
375sighandler (int signum) 791sighandler (int signum)
376{ 792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
377 signals [signum - 1].gotsig = 1; 797 signals [signum - 1].gotsig = 1;
378 798
379 if (!gotsig) 799 if (!gotsig)
380 { 800 {
801 int old_errno = errno;
381 gotsig = 1; 802 gotsig = 1;
382 write (sigpipe [1], &signum, 1); 803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
383 } 805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
384} 826}
385 827
386static void 828static void
387sigcb (struct ev_io *iow, int revents) 829sigcb (EV_P_ ev_io *iow, int revents)
388{ 830{
389 struct ev_signal *w;
390 int signum; 831 int signum;
391 832
392 read (sigpipe [0], &revents, 1); 833 read (sigpipe [0], &revents, 1);
393 gotsig = 0; 834 gotsig = 0;
394 835
395 for (signum = signalmax; signum--; ) 836 for (signum = signalmax; signum--; )
396 if (signals [signum].gotsig) 837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840
841void inline_speed
842fd_intern (int fd)
843{
844#ifdef _WIN32
845 int arg = 1;
846 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
847#else
848 fcntl (fd, F_SETFD, FD_CLOEXEC);
849 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif
851}
852
853static void noinline
854siginit (EV_P)
855{
856 fd_intern (sigpipe [0]);
857 fd_intern (sigpipe [1]);
858
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */
862}
863
864/*****************************************************************************/
865
866static WL childs [EV_PID_HASHSIZE];
867
868#ifndef _WIN32
869
870static ev_signal childev;
871
872void inline_speed
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
874{
875 ev_child *w;
876
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
878 if (w->pid == pid || !w->pid)
397 { 879 {
398 signals [signum].gotsig = 0; 880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
399 881 w->rpid = pid;
400 for (w = signals [signum].head; w; w = w->next) 882 w->rstatus = status;
401 event ((W)w, EV_SIGNAL); 883 ev_feed_event (EV_A_ (W)w, EV_CHILD);
402 } 884 }
403} 885}
404
405static void
406siginit (void)
407{
408 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410
411 /* rather than sort out wether we really need nb, set it */
412 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
414
415 ev_io_set (&sigev, sigpipe [0], EV_READ);
416 ev_io_start (&sigev);
417}
418
419/*****************************************************************************/
420
421static struct ev_idle **idles;
422static int idlemax, idlecnt;
423
424static struct ev_prepare **prepares;
425static int preparemax, preparecnt;
426
427static struct ev_check **checks;
428static int checkmax, checkcnt;
429
430/*****************************************************************************/
431
432static struct ev_child *childs [PID_HASHSIZE];
433static struct ev_signal childev;
434 886
435#ifndef WCONTINUED 887#ifndef WCONTINUED
436# define WCONTINUED 0 888# define WCONTINUED 0
437#endif 889#endif
438 890
439static void 891static void
440childcb (struct ev_signal *sw, int revents) 892childcb (EV_P_ ev_signal *sw, int revents)
441{ 893{
442 struct ev_child *w;
443 int pid, status; 894 int pid, status;
444 895
896 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
445 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 897 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
446 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 898 if (!WCONTINUED
447 if (w->pid == pid || !w->pid) 899 || errno != EINVAL
448 { 900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
449 w->status = status; 901 return;
450 event ((W)w, EV_CHILD); 902
451 } 903 /* make sure we are called again until all childs have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906
907 child_reap (EV_A_ sw, pid, pid, status);
908 if (EV_PID_HASHSIZE > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
452} 910}
911
912#endif
453 913
454/*****************************************************************************/ 914/*****************************************************************************/
455 915
916#if EV_USE_PORT
917# include "ev_port.c"
918#endif
919#if EV_USE_KQUEUE
920# include "ev_kqueue.c"
921#endif
456#if EV_USE_EPOLL 922#if EV_USE_EPOLL
457# include "ev_epoll.c" 923# include "ev_epoll.c"
458#endif 924#endif
925#if EV_USE_POLL
926# include "ev_poll.c"
927#endif
459#if EV_USE_SELECT 928#if EV_USE_SELECT
460# include "ev_select.c" 929# include "ev_select.c"
461#endif 930#endif
462 931
463int 932int
… …
470ev_version_minor (void) 939ev_version_minor (void)
471{ 940{
472 return EV_VERSION_MINOR; 941 return EV_VERSION_MINOR;
473} 942}
474 943
475int ev_init (int flags) 944/* return true if we are running with elevated privileges and should ignore env variables */
945int inline_size
946enable_secure (void)
476{ 947{
477 if (!ev_method) 948#ifdef _WIN32
949 return 0;
950#else
951 return getuid () != geteuid ()
952 || getgid () != getegid ();
953#endif
954}
955
956unsigned int
957ev_supported_backends (void)
958{
959 unsigned int flags = 0;
960
961 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
962 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
963 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
964 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
965 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
966
967 return flags;
968}
969
970unsigned int
971ev_recommended_backends (void)
972{
973 unsigned int flags = ev_supported_backends ();
974
975#ifndef __NetBSD__
976 /* kqueue is borked on everything but netbsd apparently */
977 /* it usually doesn't work correctly on anything but sockets and pipes */
978 flags &= ~EVBACKEND_KQUEUE;
979#endif
980#ifdef __APPLE__
981 // flags &= ~EVBACKEND_KQUEUE; for documentation
982 flags &= ~EVBACKEND_POLL;
983#endif
984
985 return flags;
986}
987
988unsigned int
989ev_embeddable_backends (void)
990{
991 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
992
993 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
994 /* please fix it and tell me how to detect the fix */
995 flags &= ~EVBACKEND_EPOLL;
996
997 return flags;
998}
999
1000unsigned int
1001ev_backend (EV_P)
1002{
1003 return backend;
1004}
1005
1006unsigned int
1007ev_loop_count (EV_P)
1008{
1009 return loop_count;
1010}
1011
1012void
1013ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1014{
1015 io_blocktime = interval;
1016}
1017
1018void
1019ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1020{
1021 timeout_blocktime = interval;
1022}
1023
1024static void noinline
1025loop_init (EV_P_ unsigned int flags)
1026{
1027 if (!backend)
478 { 1028 {
479#if EV_USE_MONOTONIC 1029#if EV_USE_MONOTONIC
480 { 1030 {
481 struct timespec ts; 1031 struct timespec ts;
482 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483 have_monotonic = 1; 1033 have_monotonic = 1;
484 } 1034 }
485#endif 1035#endif
486 1036
487 ev_now = ev_time (); 1037 ev_rt_now = ev_time ();
488 now = get_clock (); 1038 mn_now = get_clock ();
489 now_floor = now; 1039 now_floor = mn_now;
490 diff = ev_now - now; 1040 rtmn_diff = ev_rt_now - mn_now;
491 1041
492 if (pipe (sigpipe)) 1042 io_blocktime = 0.;
493 return 0; 1043 timeout_blocktime = 0.;
494 1044
495 ev_method = EVMETHOD_NONE; 1045 /* pid check not overridable via env */
1046#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid ();
1049#endif
1050
1051 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS"));
1055
1056 if (!(flags & 0x0000ffffUL))
1057 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY
1062 fs_fd = -2;
1063#endif
1064
1065#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1070#endif
496#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
497 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1072 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1073#endif
1074#if EV_USE_POLL
1075 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
498#endif 1076#endif
499#if EV_USE_SELECT 1077#if EV_USE_SELECT
500 if (ev_method == EVMETHOD_NONE) select_init (flags); 1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
501#endif 1079#endif
502 1080
503 if (ev_method) 1081 ev_init (&sigev, sigcb);
1082 ev_set_priority (&sigev, EV_MAXPRI);
1083 }
1084}
1085
1086static void noinline
1087loop_destroy (EV_P)
1088{
1089 int i;
1090
1091#if EV_USE_INOTIFY
1092 if (fs_fd >= 0)
1093 close (fs_fd);
1094#endif
1095
1096 if (backend_fd >= 0)
1097 close (backend_fd);
1098
1099#if EV_USE_PORT
1100 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1101#endif
1102#if EV_USE_KQUEUE
1103 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1104#endif
1105#if EV_USE_EPOLL
1106 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1107#endif
1108#if EV_USE_POLL
1109 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1110#endif
1111#if EV_USE_SELECT
1112 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1113#endif
1114
1115 for (i = NUMPRI; i--; )
1116 {
1117 array_free (pending, [i]);
1118#if EV_IDLE_ENABLE
1119 array_free (idle, [i]);
1120#endif
1121 }
1122
1123 ev_free (anfds); anfdmax = 0;
1124
1125 /* have to use the microsoft-never-gets-it-right macro */
1126 array_free (fdchange, EMPTY);
1127 array_free (timer, EMPTY);
1128#if EV_PERIODIC_ENABLE
1129 array_free (periodic, EMPTY);
1130#endif
1131#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY);
1133#endif
1134 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY);
1136
1137 backend = 0;
1138}
1139
1140void inline_size infy_fork (EV_P);
1141
1142void inline_size
1143loop_fork (EV_P)
1144{
1145#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif
1148#if EV_USE_KQUEUE
1149 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1150#endif
1151#if EV_USE_EPOLL
1152 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1153#endif
1154#if EV_USE_INOTIFY
1155 infy_fork (EV_A);
1156#endif
1157
1158 if (ev_is_active (&sigev))
1159 {
1160 /* default loop */
1161
1162 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev);
1164 close (sigpipe [0]);
1165 close (sigpipe [1]);
1166
1167 while (pipe (sigpipe))
1168 syserr ("(libev) error creating pipe");
1169
1170 siginit (EV_A);
1171 }
1172
1173 postfork = 0;
1174}
1175
1176#if EV_MULTIPLICITY
1177struct ev_loop *
1178ev_loop_new (unsigned int flags)
1179{
1180 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1181
1182 memset (loop, 0, sizeof (struct ev_loop));
1183
1184 loop_init (EV_A_ flags);
1185
1186 if (ev_backend (EV_A))
1187 return loop;
1188
1189 return 0;
1190}
1191
1192void
1193ev_loop_destroy (EV_P)
1194{
1195 loop_destroy (EV_A);
1196 ev_free (loop);
1197}
1198
1199void
1200ev_loop_fork (EV_P)
1201{
1202 postfork = 1;
1203}
1204
1205#endif
1206
1207#if EV_MULTIPLICITY
1208struct ev_loop *
1209ev_default_loop_init (unsigned int flags)
1210#else
1211int
1212ev_default_loop (unsigned int flags)
1213#endif
1214{
1215 if (sigpipe [0] == sigpipe [1])
1216 if (pipe (sigpipe))
1217 return 0;
1218
1219 if (!ev_default_loop_ptr)
1220 {
1221#if EV_MULTIPLICITY
1222 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1223#else
1224 ev_default_loop_ptr = 1;
1225#endif
1226
1227 loop_init (EV_A_ flags);
1228
1229 if (ev_backend (EV_A))
504 { 1230 {
505 ev_watcher_init (&sigev, sigcb);
506 siginit (); 1231 siginit (EV_A);
507 1232
1233#ifndef _WIN32
508 ev_signal_init (&childev, childcb, SIGCHLD); 1234 ev_signal_init (&childev, childcb, SIGCHLD);
1235 ev_set_priority (&childev, EV_MAXPRI);
509 ev_signal_start (&childev); 1236 ev_signal_start (EV_A_ &childev);
1237 ev_unref (EV_A); /* child watcher should not keep loop alive */
1238#endif
510 } 1239 }
1240 else
1241 ev_default_loop_ptr = 0;
511 } 1242 }
512 1243
513 return ev_method; 1244 return ev_default_loop_ptr;
1245}
1246
1247void
1248ev_default_destroy (void)
1249{
1250#if EV_MULTIPLICITY
1251 struct ev_loop *loop = ev_default_loop_ptr;
1252#endif
1253
1254#ifndef _WIN32
1255 ev_ref (EV_A); /* child watcher */
1256 ev_signal_stop (EV_A_ &childev);
1257#endif
1258
1259 ev_ref (EV_A); /* signal watcher */
1260 ev_io_stop (EV_A_ &sigev);
1261
1262 close (sigpipe [0]); sigpipe [0] = 0;
1263 close (sigpipe [1]); sigpipe [1] = 0;
1264
1265 loop_destroy (EV_A);
1266}
1267
1268void
1269ev_default_fork (void)
1270{
1271#if EV_MULTIPLICITY
1272 struct ev_loop *loop = ev_default_loop_ptr;
1273#endif
1274
1275 if (backend)
1276 postfork = 1;
514} 1277}
515 1278
516/*****************************************************************************/ 1279/*****************************************************************************/
517 1280
518void 1281void
519ev_fork_prepare (void) 1282ev_invoke (EV_P_ void *w, int revents)
520{ 1283{
521 /* nop */ 1284 EV_CB_INVOKE ((W)w, revents);
522} 1285}
523 1286
524void 1287void inline_speed
525ev_fork_parent (void)
526{
527 /* nop */
528}
529
530void
531ev_fork_child (void)
532{
533#if EV_USE_EPOLL
534 if (ev_method == EVMETHOD_EPOLL)
535 epoll_postfork_child ();
536#endif
537
538 ev_io_stop (&sigev);
539 close (sigpipe [0]);
540 close (sigpipe [1]);
541 pipe (sigpipe);
542 siginit ();
543}
544
545/*****************************************************************************/
546
547static void
548call_pending (void) 1288call_pending (EV_P)
549{ 1289{
1290 int pri;
1291
1292 for (pri = NUMPRI; pri--; )
550 while (pendingcnt) 1293 while (pendingcnt [pri])
551 { 1294 {
552 ANPENDING *p = pendings + --pendingcnt; 1295 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553 1296
554 if (p->w) 1297 if (expect_true (p->w))
555 { 1298 {
1299 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1300
556 p->w->pending = 0; 1301 p->w->pending = 0;
557 p->w->cb (p->w, p->events); 1302 EV_CB_INVOKE (p->w, p->events);
558 } 1303 }
559 } 1304 }
560} 1305}
561 1306
562static void 1307void inline_size
563timers_reify (void) 1308timers_reify (EV_P)
564{ 1309{
565 while (timercnt && timers [0]->at <= now) 1310 while (timercnt && ((WT)timers [0])->at <= mn_now)
566 { 1311 {
567 struct ev_timer *w = timers [0]; 1312 ev_timer *w = (ev_timer *)timers [0];
1313
1314 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
568 1315
569 /* first reschedule or stop timer */ 1316 /* first reschedule or stop timer */
570 if (w->repeat) 1317 if (w->repeat)
571 { 1318 {
572 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1319 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1320
573 w->at = now + w->repeat; 1321 ((WT)w)->at += w->repeat;
1322 if (((WT)w)->at < mn_now)
1323 ((WT)w)->at = mn_now;
1324
574 downheap ((WT *)timers, timercnt, 0); 1325 downheap (timers, timercnt, 0);
575 } 1326 }
576 else 1327 else
577 ev_timer_stop (w); /* nonrepeating: stop timer */ 1328 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578 1329
579 event ((W)w, EV_TIMEOUT); 1330 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
580 } 1331 }
581} 1332}
582 1333
583static void 1334#if EV_PERIODIC_ENABLE
1335void inline_size
584periodics_reify (void) 1336periodics_reify (EV_P)
585{ 1337{
586 while (periodiccnt && periodics [0]->at <= ev_now) 1338 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
587 { 1339 {
588 struct ev_periodic *w = periodics [0]; 1340 ev_periodic *w = (ev_periodic *)periodics [0];
1341
1342 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
589 1343
590 /* first reschedule or stop timer */ 1344 /* first reschedule or stop timer */
591 if (w->interval) 1345 if (w->reschedule_cb)
592 { 1346 {
1347 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1348 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1349 downheap (periodics, periodiccnt, 0);
1350 }
1351 else if (w->interval)
1352 {
593 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1353 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1354 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
594 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 1355 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
595 downheap ((WT *)periodics, periodiccnt, 0); 1356 downheap (periodics, periodiccnt, 0);
596 } 1357 }
597 else 1358 else
598 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1359 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599 1360
600 event ((W)w, EV_PERIODIC); 1361 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
601 } 1362 }
602} 1363}
603 1364
604static void 1365static void noinline
605periodics_reschedule (ev_tstamp diff) 1366periodics_reschedule (EV_P)
606{ 1367{
607 int i; 1368 int i;
608 1369
609 /* adjust periodics after time jump */ 1370 /* adjust periodics after time jump */
610 for (i = 0; i < periodiccnt; ++i) 1371 for (i = 0; i < periodiccnt; ++i)
611 { 1372 {
612 struct ev_periodic *w = periodics [i]; 1373 ev_periodic *w = (ev_periodic *)periodics [i];
613 1374
1375 if (w->reschedule_cb)
1376 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
614 if (w->interval) 1377 else if (w->interval)
1378 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1379 }
1380
1381 /* now rebuild the heap */
1382 for (i = periodiccnt >> 1; i--; )
1383 downheap (periodics, periodiccnt, i);
1384}
1385#endif
1386
1387#if EV_IDLE_ENABLE
1388void inline_size
1389idle_reify (EV_P)
1390{
1391 if (expect_false (idleall))
1392 {
1393 int pri;
1394
1395 for (pri = NUMPRI; pri--; )
615 { 1396 {
616 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1397 if (pendingcnt [pri])
1398 break;
617 1399
618 if (fabs (diff) >= 1e-4) 1400 if (idlecnt [pri])
619 { 1401 {
620 ev_periodic_stop (w); 1402 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
621 ev_periodic_start (w); 1403 break;
622
623 i = 0; /* restart loop, inefficient, but time jumps should be rare */
624 } 1404 }
625 } 1405 }
626 } 1406 }
627} 1407}
1408#endif
628 1409
629static int 1410void inline_speed
630time_update_monotonic (void) 1411time_update (EV_P_ ev_tstamp max_block)
631{
632 now = get_clock ();
633
634 if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
635 {
636 ev_now = now + diff;
637 return 0;
638 }
639 else
640 {
641 now_floor = now;
642 ev_now = ev_time ();
643 return 1;
644 }
645}
646
647static void
648time_update (void)
649{ 1412{
650 int i; 1413 int i;
651 1414
652#if EV_USE_MONOTONIC 1415#if EV_USE_MONOTONIC
653 if (expect_true (have_monotonic)) 1416 if (expect_true (have_monotonic))
654 { 1417 {
655 if (time_update_monotonic ()) 1418 ev_tstamp odiff = rtmn_diff;
1419
1420 mn_now = get_clock ();
1421
1422 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1423 /* interpolate in the meantime */
1424 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
656 { 1425 {
657 ev_tstamp odiff = diff; 1426 ev_rt_now = rtmn_diff + mn_now;
658 1427 return;
659 for (i = 4; --i; ) /* loop a few times, before making important decisions */
660 {
661 diff = ev_now - now;
662
663 if (fabs (odiff - diff) < MIN_TIMEJUMP)
664 return; /* all is well */
665
666 ev_now = ev_time ();
667 now = get_clock ();
668 now_floor = now;
669 }
670
671 periodics_reschedule (diff - odiff);
672 /* no timer adjustment, as the monotonic clock doesn't jump */
673 } 1428 }
1429
1430 now_floor = mn_now;
1431 ev_rt_now = ev_time ();
1432
1433 /* loop a few times, before making important decisions.
1434 * on the choice of "4": one iteration isn't enough,
1435 * in case we get preempted during the calls to
1436 * ev_time and get_clock. a second call is almost guaranteed
1437 * to succeed in that case, though. and looping a few more times
1438 * doesn't hurt either as we only do this on time-jumps or
1439 * in the unlikely event of having been preempted here.
1440 */
1441 for (i = 4; --i; )
1442 {
1443 rtmn_diff = ev_rt_now - mn_now;
1444
1445 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1446 return; /* all is well */
1447
1448 ev_rt_now = ev_time ();
1449 mn_now = get_clock ();
1450 now_floor = mn_now;
1451 }
1452
1453# if EV_PERIODIC_ENABLE
1454 periodics_reschedule (EV_A);
1455# endif
1456 /* no timer adjustment, as the monotonic clock doesn't jump */
1457 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
674 } 1458 }
675 else 1459 else
676#endif 1460#endif
677 { 1461 {
678 ev_now = ev_time (); 1462 ev_rt_now = ev_time ();
679 1463
680 if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1464 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
681 { 1465 {
1466#if EV_PERIODIC_ENABLE
682 periodics_reschedule (ev_now - now); 1467 periodics_reschedule (EV_A);
683 1468#endif
684 /* adjust timers. this is easy, as the offset is the same for all */ 1469 /* adjust timers. this is easy, as the offset is the same for all of them */
685 for (i = 0; i < timercnt; ++i) 1470 for (i = 0; i < timercnt; ++i)
686 timers [i]->at += diff; 1471 ((WT)timers [i])->at += ev_rt_now - mn_now;
687 } 1472 }
688 1473
689 now = ev_now; 1474 mn_now = ev_rt_now;
690 } 1475 }
691} 1476}
692 1477
693int ev_loop_done; 1478void
1479ev_ref (EV_P)
1480{
1481 ++activecnt;
1482}
694 1483
1484void
1485ev_unref (EV_P)
1486{
1487 --activecnt;
1488}
1489
1490static int loop_done;
1491
1492void
695void ev_loop (int flags) 1493ev_loop (EV_P_ int flags)
696{ 1494{
697 double block;
698 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1495 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1496 ? EVUNLOOP_ONE
1497 : EVUNLOOP_CANCEL;
1498
1499 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
699 1500
700 do 1501 do
701 { 1502 {
1503#ifndef _WIN32
1504 if (expect_false (curpid)) /* penalise the forking check even more */
1505 if (expect_false (getpid () != curpid))
1506 {
1507 curpid = getpid ();
1508 postfork = 1;
1509 }
1510#endif
1511
1512#if EV_FORK_ENABLE
1513 /* we might have forked, so queue fork handlers */
1514 if (expect_false (postfork))
1515 if (forkcnt)
1516 {
1517 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1518 call_pending (EV_A);
1519 }
1520#endif
1521
702 /* queue check watchers (and execute them) */ 1522 /* queue prepare watchers (and execute them) */
703 if (expect_false (preparecnt)) 1523 if (expect_false (preparecnt))
704 { 1524 {
705 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1525 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706 call_pending (); 1526 call_pending (EV_A);
707 } 1527 }
708 1528
1529 if (expect_false (!activecnt))
1530 break;
1531
1532 /* we might have forked, so reify kernel state if necessary */
1533 if (expect_false (postfork))
1534 loop_fork (EV_A);
1535
709 /* update fd-related kernel structures */ 1536 /* update fd-related kernel structures */
710 fd_reify (); 1537 fd_reify (EV_A);
711 1538
712 /* calculate blocking time */ 1539 /* calculate blocking time */
1540 {
1541 ev_tstamp waittime = 0.;
1542 ev_tstamp sleeptime = 0.;
713 1543
714 /* we only need this for !monotonic clockor timers, but as we basically 1544 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
715 always have timers, we just calculate it always */
716#if EV_USE_MONOTONIC
717 if (expect_true (have_monotonic))
718 time_update_monotonic ();
719 else
720#endif
721 { 1545 {
722 ev_now = ev_time (); 1546 /* update time to cancel out callback processing overhead */
723 now = ev_now; 1547 time_update (EV_A_ 1e100);
724 }
725 1548
726 if (flags & EVLOOP_NONBLOCK || idlecnt)
727 block = 0.;
728 else
729 {
730 block = MAX_BLOCKTIME; 1549 waittime = MAX_BLOCKTIME;
731 1550
732 if (timercnt) 1551 if (timercnt)
733 { 1552 {
734 ev_tstamp to = timers [0]->at - now + method_fudge; 1553 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
735 if (block > to) block = to; 1554 if (waittime > to) waittime = to;
736 } 1555 }
737 1556
1557#if EV_PERIODIC_ENABLE
738 if (periodiccnt) 1558 if (periodiccnt)
739 { 1559 {
740 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1560 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
741 if (block > to) block = to; 1561 if (waittime > to) waittime = to;
742 } 1562 }
1563#endif
743 1564
744 if (block < 0.) block = 0.; 1565 if (expect_false (waittime < timeout_blocktime))
1566 waittime = timeout_blocktime;
1567
1568 sleeptime = waittime - backend_fudge;
1569
1570 if (expect_true (sleeptime > io_blocktime))
1571 sleeptime = io_blocktime;
1572
1573 if (sleeptime)
1574 {
1575 ev_sleep (sleeptime);
1576 waittime -= sleeptime;
1577 }
745 } 1578 }
746 1579
747 method_poll (block); 1580 ++loop_count;
1581 backend_poll (EV_A_ waittime);
748 1582
749 /* update ev_now, do magic */ 1583 /* update ev_rt_now, do magic */
750 time_update (); 1584 time_update (EV_A_ waittime + sleeptime);
1585 }
751 1586
752 /* queue pending timers and reschedule them */ 1587 /* queue pending timers and reschedule them */
753 timers_reify (); /* relative timers called last */ 1588 timers_reify (EV_A); /* relative timers called last */
1589#if EV_PERIODIC_ENABLE
754 periodics_reify (); /* absolute timers called first */ 1590 periodics_reify (EV_A); /* absolute timers called first */
1591#endif
755 1592
1593#if EV_IDLE_ENABLE
756 /* queue idle watchers unless io or timers are pending */ 1594 /* queue idle watchers unless other events are pending */
757 if (!pendingcnt) 1595 idle_reify (EV_A);
758 queue_events ((W *)idles, idlecnt, EV_IDLE); 1596#endif
759 1597
760 /* queue check watchers, to be executed first */ 1598 /* queue check watchers, to be executed first */
761 if (checkcnt) 1599 if (expect_false (checkcnt))
762 queue_events ((W *)checks, checkcnt, EV_CHECK); 1600 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763 1601
764 call_pending (); 1602 call_pending (EV_A);
765 }
766 while (!ev_loop_done);
767 1603
768 if (ev_loop_done != 2) 1604 }
1605 while (expect_true (activecnt && !loop_done));
1606
1607 if (loop_done == EVUNLOOP_ONE)
1608 loop_done = EVUNLOOP_CANCEL;
1609}
1610
1611void
1612ev_unloop (EV_P_ int how)
1613{
769 ev_loop_done = 0; 1614 loop_done = how;
770} 1615}
771 1616
772/*****************************************************************************/ 1617/*****************************************************************************/
773 1618
774static void 1619void inline_size
775wlist_add (WL *head, WL elem) 1620wlist_add (WL *head, WL elem)
776{ 1621{
777 elem->next = *head; 1622 elem->next = *head;
778 *head = elem; 1623 *head = elem;
779} 1624}
780 1625
781static void 1626void inline_size
782wlist_del (WL *head, WL elem) 1627wlist_del (WL *head, WL elem)
783{ 1628{
784 while (*head) 1629 while (*head)
785 { 1630 {
786 if (*head == elem) 1631 if (*head == elem)
… …
791 1636
792 head = &(*head)->next; 1637 head = &(*head)->next;
793 } 1638 }
794} 1639}
795 1640
796static void 1641void inline_speed
797ev_clear_pending (W w) 1642clear_pending (EV_P_ W w)
798{ 1643{
799 if (w->pending) 1644 if (w->pending)
800 { 1645 {
801 pendings [w->pending - 1].w = 0; 1646 pendings [ABSPRI (w)][w->pending - 1].w = 0;
802 w->pending = 0; 1647 w->pending = 0;
803 } 1648 }
804} 1649}
805 1650
806static void 1651int
1652ev_clear_pending (EV_P_ void *w)
1653{
1654 W w_ = (W)w;
1655 int pending = w_->pending;
1656
1657 if (expect_true (pending))
1658 {
1659 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1660 w_->pending = 0;
1661 p->w = 0;
1662 return p->events;
1663 }
1664 else
1665 return 0;
1666}
1667
1668void inline_size
1669pri_adjust (EV_P_ W w)
1670{
1671 int pri = w->priority;
1672 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1673 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1674 w->priority = pri;
1675}
1676
1677void inline_speed
807ev_start (W w, int active) 1678ev_start (EV_P_ W w, int active)
808{ 1679{
1680 pri_adjust (EV_A_ w);
809 w->active = active; 1681 w->active = active;
1682 ev_ref (EV_A);
810} 1683}
811 1684
812static void 1685void inline_size
813ev_stop (W w) 1686ev_stop (EV_P_ W w)
814{ 1687{
1688 ev_unref (EV_A);
815 w->active = 0; 1689 w->active = 0;
816} 1690}
817 1691
818/*****************************************************************************/ 1692/*****************************************************************************/
819 1693
820void 1694void noinline
821ev_io_start (struct ev_io *w) 1695ev_io_start (EV_P_ ev_io *w)
822{ 1696{
823 int fd = w->fd; 1697 int fd = w->fd;
824 1698
825 if (ev_is_active (w)) 1699 if (expect_false (ev_is_active (w)))
826 return; 1700 return;
827 1701
828 assert (("ev_io_start called with negative fd", fd >= 0)); 1702 assert (("ev_io_start called with negative fd", fd >= 0));
829 1703
830 ev_start ((W)w, 1); 1704 ev_start (EV_A_ (W)w, 1);
831 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1705 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
832 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1706 wlist_add (&anfds[fd].head, (WL)w);
833 1707
834 fd_change (fd); 1708 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1709 w->events &= ~EV_IOFDSET;
835} 1710}
836 1711
837void 1712void noinline
838ev_io_stop (struct ev_io *w) 1713ev_io_stop (EV_P_ ev_io *w)
839{ 1714{
840 ev_clear_pending ((W)w); 1715 clear_pending (EV_A_ (W)w);
841 if (!ev_is_active (w)) 1716 if (expect_false (!ev_is_active (w)))
842 return; 1717 return;
843 1718
1719 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1720
844 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1721 wlist_del (&anfds[w->fd].head, (WL)w);
845 ev_stop ((W)w); 1722 ev_stop (EV_A_ (W)w);
846 1723
847 fd_change (w->fd); 1724 fd_change (EV_A_ w->fd, 1);
848} 1725}
849 1726
850void 1727void noinline
851ev_timer_start (struct ev_timer *w) 1728ev_timer_start (EV_P_ ev_timer *w)
852{ 1729{
853 if (ev_is_active (w)) 1730 if (expect_false (ev_is_active (w)))
854 return; 1731 return;
855 1732
856 w->at += now; 1733 ((WT)w)->at += mn_now;
857 1734
858 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1735 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859 1736
860 ev_start ((W)w, ++timercnt); 1737 ev_start (EV_A_ (W)w, ++timercnt);
861 array_needsize (timers, timermax, timercnt, ); 1738 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
862 timers [timercnt - 1] = w; 1739 timers [timercnt - 1] = (WT)w;
863 upheap ((WT *)timers, timercnt - 1); 1740 upheap (timers, timercnt - 1);
864}
865 1741
866void 1742 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1743}
1744
1745void noinline
867ev_timer_stop (struct ev_timer *w) 1746ev_timer_stop (EV_P_ ev_timer *w)
868{ 1747{
869 ev_clear_pending ((W)w); 1748 clear_pending (EV_A_ (W)w);
870 if (!ev_is_active (w)) 1749 if (expect_false (!ev_is_active (w)))
871 return; 1750 return;
872 1751
873 if (w->active < timercnt--) 1752 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1753
1754 {
1755 int active = ((W)w)->active;
1756
1757 if (expect_true (--active < --timercnt))
874 { 1758 {
875 timers [w->active - 1] = timers [timercnt]; 1759 timers [active] = timers [timercnt];
876 downheap ((WT *)timers, timercnt, w->active - 1); 1760 adjustheap (timers, timercnt, active);
877 } 1761 }
1762 }
878 1763
879 w->at = w->repeat; 1764 ((WT)w)->at -= mn_now;
880 1765
881 ev_stop ((W)w); 1766 ev_stop (EV_A_ (W)w);
882} 1767}
883 1768
884void 1769void noinline
885ev_timer_again (struct ev_timer *w) 1770ev_timer_again (EV_P_ ev_timer *w)
886{ 1771{
887 if (ev_is_active (w)) 1772 if (ev_is_active (w))
888 { 1773 {
889 if (w->repeat) 1774 if (w->repeat)
890 { 1775 {
891 w->at = now + w->repeat; 1776 ((WT)w)->at = mn_now + w->repeat;
892 downheap ((WT *)timers, timercnt, w->active - 1); 1777 adjustheap (timers, timercnt, ((W)w)->active - 1);
893 } 1778 }
894 else 1779 else
895 ev_timer_stop (w); 1780 ev_timer_stop (EV_A_ w);
896 } 1781 }
897 else if (w->repeat) 1782 else if (w->repeat)
1783 {
1784 w->at = w->repeat;
898 ev_timer_start (w); 1785 ev_timer_start (EV_A_ w);
1786 }
899} 1787}
900 1788
901void 1789#if EV_PERIODIC_ENABLE
1790void noinline
902ev_periodic_start (struct ev_periodic *w) 1791ev_periodic_start (EV_P_ ev_periodic *w)
903{ 1792{
904 if (ev_is_active (w)) 1793 if (expect_false (ev_is_active (w)))
905 return; 1794 return;
906 1795
1796 if (w->reschedule_cb)
1797 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1798 else if (w->interval)
1799 {
907 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1800 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908
909 /* this formula differs from the one in periodic_reify because we do not always round up */ 1801 /* this formula differs from the one in periodic_reify because we do not always round up */
910 if (w->interval)
911 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1802 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1803 }
1804 else
1805 ((WT)w)->at = w->offset;
912 1806
913 ev_start ((W)w, ++periodiccnt); 1807 ev_start (EV_A_ (W)w, ++periodiccnt);
914 array_needsize (periodics, periodicmax, periodiccnt, ); 1808 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
915 periodics [periodiccnt - 1] = w; 1809 periodics [periodiccnt - 1] = (WT)w;
916 upheap ((WT *)periodics, periodiccnt - 1); 1810 upheap (periodics, periodiccnt - 1);
917}
918 1811
919void 1812 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1813}
1814
1815void noinline
920ev_periodic_stop (struct ev_periodic *w) 1816ev_periodic_stop (EV_P_ ev_periodic *w)
921{ 1817{
922 ev_clear_pending ((W)w); 1818 clear_pending (EV_A_ (W)w);
923 if (!ev_is_active (w)) 1819 if (expect_false (!ev_is_active (w)))
924 return; 1820 return;
925 1821
926 if (w->active < periodiccnt--) 1822 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1823
1824 {
1825 int active = ((W)w)->active;
1826
1827 if (expect_true (--active < --periodiccnt))
927 { 1828 {
928 periodics [w->active - 1] = periodics [periodiccnt]; 1829 periodics [active] = periodics [periodiccnt];
929 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1830 adjustheap (periodics, periodiccnt, active);
930 } 1831 }
1832 }
931 1833
932 ev_stop ((W)w); 1834 ev_stop (EV_A_ (W)w);
933} 1835}
934 1836
935void 1837void noinline
1838ev_periodic_again (EV_P_ ev_periodic *w)
1839{
1840 /* TODO: use adjustheap and recalculation */
1841 ev_periodic_stop (EV_A_ w);
1842 ev_periodic_start (EV_A_ w);
1843}
1844#endif
1845
1846#ifndef SA_RESTART
1847# define SA_RESTART 0
1848#endif
1849
1850void noinline
936ev_signal_start (struct ev_signal *w) 1851ev_signal_start (EV_P_ ev_signal *w)
937{ 1852{
1853#if EV_MULTIPLICITY
1854 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1855#endif
938 if (ev_is_active (w)) 1856 if (expect_false (ev_is_active (w)))
939 return; 1857 return;
940 1858
941 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1859 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942 1860
943 ev_start ((W)w, 1); 1861 {
1862#ifndef _WIN32
1863 sigset_t full, prev;
1864 sigfillset (&full);
1865 sigprocmask (SIG_SETMASK, &full, &prev);
1866#endif
1867
944 array_needsize (signals, signalmax, w->signum, signals_init); 1868 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1869
1870#ifndef _WIN32
1871 sigprocmask (SIG_SETMASK, &prev, 0);
1872#endif
1873 }
1874
1875 ev_start (EV_A_ (W)w, 1);
945 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1876 wlist_add (&signals [w->signum - 1].head, (WL)w);
946 1877
947 if (!w->next) 1878 if (!((WL)w)->next)
948 { 1879 {
1880#if _WIN32
1881 signal (w->signum, sighandler);
1882#else
949 struct sigaction sa; 1883 struct sigaction sa;
950 sa.sa_handler = sighandler; 1884 sa.sa_handler = sighandler;
951 sigfillset (&sa.sa_mask); 1885 sigfillset (&sa.sa_mask);
952 sa.sa_flags = 0; 1886 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953 sigaction (w->signum, &sa, 0); 1887 sigaction (w->signum, &sa, 0);
1888#endif
954 } 1889 }
955} 1890}
956 1891
957void 1892void noinline
958ev_signal_stop (struct ev_signal *w) 1893ev_signal_stop (EV_P_ ev_signal *w)
959{ 1894{
960 ev_clear_pending ((W)w); 1895 clear_pending (EV_A_ (W)w);
961 if (!ev_is_active (w)) 1896 if (expect_false (!ev_is_active (w)))
962 return; 1897 return;
963 1898
964 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1899 wlist_del (&signals [w->signum - 1].head, (WL)w);
965 ev_stop ((W)w); 1900 ev_stop (EV_A_ (W)w);
966 1901
967 if (!signals [w->signum - 1].head) 1902 if (!signals [w->signum - 1].head)
968 signal (w->signum, SIG_DFL); 1903 signal (w->signum, SIG_DFL);
969} 1904}
970 1905
971void 1906void
972ev_idle_start (struct ev_idle *w) 1907ev_child_start (EV_P_ ev_child *w)
973{ 1908{
1909#if EV_MULTIPLICITY
1910 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1911#endif
974 if (ev_is_active (w)) 1912 if (expect_false (ev_is_active (w)))
975 return; 1913 return;
976 1914
977 ev_start ((W)w, ++idlecnt); 1915 ev_start (EV_A_ (W)w, 1);
978 array_needsize (idles, idlemax, idlecnt, ); 1916 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
979 idles [idlecnt - 1] = w;
980} 1917}
981 1918
982void 1919void
983ev_idle_stop (struct ev_idle *w) 1920ev_child_stop (EV_P_ ev_child *w)
984{ 1921{
985 ev_clear_pending ((W)w); 1922 clear_pending (EV_A_ (W)w);
986 if (ev_is_active (w)) 1923 if (expect_false (!ev_is_active (w)))
987 return; 1924 return;
988 1925
989 idles [w->active - 1] = idles [--idlecnt]; 1926 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
990 ev_stop ((W)w); 1927 ev_stop (EV_A_ (W)w);
991} 1928}
992 1929
1930#if EV_STAT_ENABLE
1931
1932# ifdef _WIN32
1933# undef lstat
1934# define lstat(a,b) _stati64 (a,b)
1935# endif
1936
1937#define DEF_STAT_INTERVAL 5.0074891
1938#define MIN_STAT_INTERVAL 0.1074891
1939
1940static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1941
1942#if EV_USE_INOTIFY
1943# define EV_INOTIFY_BUFSIZE 8192
1944
1945static void noinline
1946infy_add (EV_P_ ev_stat *w)
1947{
1948 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);
1949
1950 if (w->wd < 0)
1951 {
1952 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1953
1954 /* monitor some parent directory for speedup hints */
1955 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1956 {
1957 char path [4096];
1958 strcpy (path, w->path);
1959
1960 do
1961 {
1962 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1963 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1964
1965 char *pend = strrchr (path, '/');
1966
1967 if (!pend)
1968 break; /* whoops, no '/', complain to your admin */
1969
1970 *pend = 0;
1971 w->wd = inotify_add_watch (fs_fd, path, mask);
1972 }
1973 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1974 }
1975 }
1976 else
1977 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1978
1979 if (w->wd >= 0)
1980 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1981}
1982
1983static void noinline
1984infy_del (EV_P_ ev_stat *w)
1985{
1986 int slot;
1987 int wd = w->wd;
1988
1989 if (wd < 0)
1990 return;
1991
1992 w->wd = -2;
1993 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1994 wlist_del (&fs_hash [slot].head, (WL)w);
1995
1996 /* remove this watcher, if others are watching it, they will rearm */
1997 inotify_rm_watch (fs_fd, wd);
1998}
1999
2000static void noinline
2001infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2002{
2003 if (slot < 0)
2004 /* overflow, need to check for all hahs slots */
2005 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2006 infy_wd (EV_A_ slot, wd, ev);
2007 else
2008 {
2009 WL w_;
2010
2011 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2012 {
2013 ev_stat *w = (ev_stat *)w_;
2014 w_ = w_->next; /* lets us remove this watcher and all before it */
2015
2016 if (w->wd == wd || wd == -1)
2017 {
2018 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2019 {
2020 w->wd = -1;
2021 infy_add (EV_A_ w); /* re-add, no matter what */
2022 }
2023
2024 stat_timer_cb (EV_A_ &w->timer, 0);
2025 }
2026 }
2027 }
2028}
2029
2030static void
2031infy_cb (EV_P_ ev_io *w, int revents)
2032{
2033 char buf [EV_INOTIFY_BUFSIZE];
2034 struct inotify_event *ev = (struct inotify_event *)buf;
2035 int ofs;
2036 int len = read (fs_fd, buf, sizeof (buf));
2037
2038 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2039 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2040}
2041
2042void inline_size
2043infy_init (EV_P)
2044{
2045 if (fs_fd != -2)
2046 return;
2047
2048 fs_fd = inotify_init ();
2049
2050 if (fs_fd >= 0)
2051 {
2052 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2053 ev_set_priority (&fs_w, EV_MAXPRI);
2054 ev_io_start (EV_A_ &fs_w);
2055 }
2056}
2057
2058void inline_size
2059infy_fork (EV_P)
2060{
2061 int slot;
2062
2063 if (fs_fd < 0)
2064 return;
2065
2066 close (fs_fd);
2067 fs_fd = inotify_init ();
2068
2069 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2070 {
2071 WL w_ = fs_hash [slot].head;
2072 fs_hash [slot].head = 0;
2073
2074 while (w_)
2075 {
2076 ev_stat *w = (ev_stat *)w_;
2077 w_ = w_->next; /* lets us add this watcher */
2078
2079 w->wd = -1;
2080
2081 if (fs_fd >= 0)
2082 infy_add (EV_A_ w); /* re-add, no matter what */
2083 else
2084 ev_timer_start (EV_A_ &w->timer);
2085 }
2086
2087 }
2088}
2089
2090#endif
2091
993void 2092void
2093ev_stat_stat (EV_P_ ev_stat *w)
2094{
2095 if (lstat (w->path, &w->attr) < 0)
2096 w->attr.st_nlink = 0;
2097 else if (!w->attr.st_nlink)
2098 w->attr.st_nlink = 1;
2099}
2100
2101static void noinline
2102stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2103{
2104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2105
2106 /* we copy this here each the time so that */
2107 /* prev has the old value when the callback gets invoked */
2108 w->prev = w->attr;
2109 ev_stat_stat (EV_A_ w);
2110
2111 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2112 if (
2113 w->prev.st_dev != w->attr.st_dev
2114 || w->prev.st_ino != w->attr.st_ino
2115 || w->prev.st_mode != w->attr.st_mode
2116 || w->prev.st_nlink != w->attr.st_nlink
2117 || w->prev.st_uid != w->attr.st_uid
2118 || w->prev.st_gid != w->attr.st_gid
2119 || w->prev.st_rdev != w->attr.st_rdev
2120 || w->prev.st_size != w->attr.st_size
2121 || w->prev.st_atime != w->attr.st_atime
2122 || w->prev.st_mtime != w->attr.st_mtime
2123 || w->prev.st_ctime != w->attr.st_ctime
2124 ) {
2125 #if EV_USE_INOTIFY
2126 infy_del (EV_A_ w);
2127 infy_add (EV_A_ w);
2128 ev_stat_stat (EV_A_ w); /* avoid race... */
2129 #endif
2130
2131 ev_feed_event (EV_A_ w, EV_STAT);
2132 }
2133}
2134
2135void
2136ev_stat_start (EV_P_ ev_stat *w)
2137{
2138 if (expect_false (ev_is_active (w)))
2139 return;
2140
2141 /* since we use memcmp, we need to clear any padding data etc. */
2142 memset (&w->prev, 0, sizeof (ev_statdata));
2143 memset (&w->attr, 0, sizeof (ev_statdata));
2144
2145 ev_stat_stat (EV_A_ w);
2146
2147 if (w->interval < MIN_STAT_INTERVAL)
2148 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2149
2150 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2151 ev_set_priority (&w->timer, ev_priority (w));
2152
2153#if EV_USE_INOTIFY
2154 infy_init (EV_A);
2155
2156 if (fs_fd >= 0)
2157 infy_add (EV_A_ w);
2158 else
2159#endif
2160 ev_timer_start (EV_A_ &w->timer);
2161
2162 ev_start (EV_A_ (W)w, 1);
2163}
2164
2165void
2166ev_stat_stop (EV_P_ ev_stat *w)
2167{
2168 clear_pending (EV_A_ (W)w);
2169 if (expect_false (!ev_is_active (w)))
2170 return;
2171
2172#if EV_USE_INOTIFY
2173 infy_del (EV_A_ w);
2174#endif
2175 ev_timer_stop (EV_A_ &w->timer);
2176
2177 ev_stop (EV_A_ (W)w);
2178}
2179#endif
2180
2181#if EV_IDLE_ENABLE
2182void
2183ev_idle_start (EV_P_ ev_idle *w)
2184{
2185 if (expect_false (ev_is_active (w)))
2186 return;
2187
2188 pri_adjust (EV_A_ (W)w);
2189
2190 {
2191 int active = ++idlecnt [ABSPRI (w)];
2192
2193 ++idleall;
2194 ev_start (EV_A_ (W)w, active);
2195
2196 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2197 idles [ABSPRI (w)][active - 1] = w;
2198 }
2199}
2200
2201void
2202ev_idle_stop (EV_P_ ev_idle *w)
2203{
2204 clear_pending (EV_A_ (W)w);
2205 if (expect_false (!ev_is_active (w)))
2206 return;
2207
2208 {
2209 int active = ((W)w)->active;
2210
2211 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2212 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2213
2214 ev_stop (EV_A_ (W)w);
2215 --idleall;
2216 }
2217}
2218#endif
2219
2220void
994ev_prepare_start (struct ev_prepare *w) 2221ev_prepare_start (EV_P_ ev_prepare *w)
995{ 2222{
996 if (ev_is_active (w)) 2223 if (expect_false (ev_is_active (w)))
997 return; 2224 return;
998 2225
999 ev_start ((W)w, ++preparecnt); 2226 ev_start (EV_A_ (W)w, ++preparecnt);
1000 array_needsize (prepares, preparemax, preparecnt, ); 2227 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1001 prepares [preparecnt - 1] = w; 2228 prepares [preparecnt - 1] = w;
1002} 2229}
1003 2230
1004void 2231void
1005ev_prepare_stop (struct ev_prepare *w) 2232ev_prepare_stop (EV_P_ ev_prepare *w)
1006{ 2233{
1007 ev_clear_pending ((W)w); 2234 clear_pending (EV_A_ (W)w);
1008 if (ev_is_active (w)) 2235 if (expect_false (!ev_is_active (w)))
1009 return; 2236 return;
1010 2237
2238 {
2239 int active = ((W)w)->active;
1011 prepares [w->active - 1] = prepares [--preparecnt]; 2240 prepares [active - 1] = prepares [--preparecnt];
2241 ((W)prepares [active - 1])->active = active;
2242 }
2243
1012 ev_stop ((W)w); 2244 ev_stop (EV_A_ (W)w);
1013} 2245}
1014 2246
1015void 2247void
1016ev_check_start (struct ev_check *w) 2248ev_check_start (EV_P_ ev_check *w)
1017{ 2249{
1018 if (ev_is_active (w)) 2250 if (expect_false (ev_is_active (w)))
1019 return; 2251 return;
1020 2252
1021 ev_start ((W)w, ++checkcnt); 2253 ev_start (EV_A_ (W)w, ++checkcnt);
1022 array_needsize (checks, checkmax, checkcnt, ); 2254 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1023 checks [checkcnt - 1] = w; 2255 checks [checkcnt - 1] = w;
1024} 2256}
1025 2257
1026void 2258void
1027ev_check_stop (struct ev_check *w) 2259ev_check_stop (EV_P_ ev_check *w)
1028{ 2260{
1029 ev_clear_pending ((W)w); 2261 clear_pending (EV_A_ (W)w);
1030 if (ev_is_active (w)) 2262 if (expect_false (!ev_is_active (w)))
1031 return; 2263 return;
1032 2264
2265 {
2266 int active = ((W)w)->active;
1033 checks [w->active - 1] = checks [--checkcnt]; 2267 checks [active - 1] = checks [--checkcnt];
2268 ((W)checks [active - 1])->active = active;
2269 }
2270
1034 ev_stop ((W)w); 2271 ev_stop (EV_A_ (W)w);
1035} 2272}
1036 2273
1037void 2274#if EV_EMBED_ENABLE
1038ev_child_start (struct ev_child *w) 2275void noinline
2276ev_embed_sweep (EV_P_ ev_embed *w)
1039{ 2277{
2278 ev_loop (w->other, EVLOOP_NONBLOCK);
2279}
2280
2281static void
2282embed_io_cb (EV_P_ ev_io *io, int revents)
2283{
2284 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2285
1040 if (ev_is_active (w)) 2286 if (ev_cb (w))
1041 return; 2287 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2288 else
2289 ev_loop (w->other, EVLOOP_NONBLOCK);
2290}
1042 2291
2292static void
2293embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2294{
2295 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2296
2297 {
2298 struct ev_loop *loop = w->other;
2299
2300 while (fdchangecnt)
2301 {
2302 fd_reify (EV_A);
2303 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2304 }
2305 }
2306}
2307
2308#if 0
2309static void
2310embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2311{
2312 ev_idle_stop (EV_A_ idle);
2313}
2314#endif
2315
2316void
2317ev_embed_start (EV_P_ ev_embed *w)
2318{
2319 if (expect_false (ev_is_active (w)))
2320 return;
2321
2322 {
2323 struct ev_loop *loop = w->other;
2324 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2325 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2326 }
2327
2328 ev_set_priority (&w->io, ev_priority (w));
2329 ev_io_start (EV_A_ &w->io);
2330
2331 ev_prepare_init (&w->prepare, embed_prepare_cb);
2332 ev_set_priority (&w->prepare, EV_MINPRI);
2333 ev_prepare_start (EV_A_ &w->prepare);
2334
2335 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2336
1043 ev_start ((W)w, 1); 2337 ev_start (EV_A_ (W)w, 1);
1044 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045} 2338}
1046 2339
1047void 2340void
1048ev_child_stop (struct ev_child *w) 2341ev_embed_stop (EV_P_ ev_embed *w)
1049{ 2342{
1050 ev_clear_pending ((W)w); 2343 clear_pending (EV_A_ (W)w);
1051 if (ev_is_active (w)) 2344 if (expect_false (!ev_is_active (w)))
1052 return; 2345 return;
1053 2346
1054 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2347 ev_io_stop (EV_A_ &w->io);
2348 ev_prepare_stop (EV_A_ &w->prepare);
2349
1055 ev_stop ((W)w); 2350 ev_stop (EV_A_ (W)w);
1056} 2351}
2352#endif
2353
2354#if EV_FORK_ENABLE
2355void
2356ev_fork_start (EV_P_ ev_fork *w)
2357{
2358 if (expect_false (ev_is_active (w)))
2359 return;
2360
2361 ev_start (EV_A_ (W)w, ++forkcnt);
2362 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2363 forks [forkcnt - 1] = w;
2364}
2365
2366void
2367ev_fork_stop (EV_P_ ev_fork *w)
2368{
2369 clear_pending (EV_A_ (W)w);
2370 if (expect_false (!ev_is_active (w)))
2371 return;
2372
2373 {
2374 int active = ((W)w)->active;
2375 forks [active - 1] = forks [--forkcnt];
2376 ((W)forks [active - 1])->active = active;
2377 }
2378
2379 ev_stop (EV_A_ (W)w);
2380}
2381#endif
1057 2382
1058/*****************************************************************************/ 2383/*****************************************************************************/
1059 2384
1060struct ev_once 2385struct ev_once
1061{ 2386{
1062 struct ev_io io; 2387 ev_io io;
1063 struct ev_timer to; 2388 ev_timer to;
1064 void (*cb)(int revents, void *arg); 2389 void (*cb)(int revents, void *arg);
1065 void *arg; 2390 void *arg;
1066}; 2391};
1067 2392
1068static void 2393static void
1069once_cb (struct ev_once *once, int revents) 2394once_cb (EV_P_ struct ev_once *once, int revents)
1070{ 2395{
1071 void (*cb)(int revents, void *arg) = once->cb; 2396 void (*cb)(int revents, void *arg) = once->cb;
1072 void *arg = once->arg; 2397 void *arg = once->arg;
1073 2398
1074 ev_io_stop (&once->io); 2399 ev_io_stop (EV_A_ &once->io);
1075 ev_timer_stop (&once->to); 2400 ev_timer_stop (EV_A_ &once->to);
1076 free (once); 2401 ev_free (once);
1077 2402
1078 cb (revents, arg); 2403 cb (revents, arg);
1079} 2404}
1080 2405
1081static void 2406static void
1082once_cb_io (struct ev_io *w, int revents) 2407once_cb_io (EV_P_ ev_io *w, int revents)
1083{ 2408{
1084 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085} 2410}
1086 2411
1087static void 2412static void
1088once_cb_to (struct ev_timer *w, int revents) 2413once_cb_to (EV_P_ ev_timer *w, int revents)
1089{ 2414{
1090 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091} 2416}
1092 2417
1093void 2418void
1094ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095{ 2420{
1096 struct ev_once *once = malloc (sizeof (struct ev_once)); 2421 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1097 2422
1098 if (!once) 2423 if (expect_false (!once))
2424 {
1099 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2425 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1100 else 2426 return;
1101 { 2427 }
2428
1102 once->cb = cb; 2429 once->cb = cb;
1103 once->arg = arg; 2430 once->arg = arg;
1104 2431
1105 ev_watcher_init (&once->io, once_cb_io); 2432 ev_init (&once->io, once_cb_io);
1106 if (fd >= 0) 2433 if (fd >= 0)
1107 { 2434 {
1108 ev_io_set (&once->io, fd, events); 2435 ev_io_set (&once->io, fd, events);
1109 ev_io_start (&once->io); 2436 ev_io_start (EV_A_ &once->io);
1110 } 2437 }
1111 2438
1112 ev_watcher_init (&once->to, once_cb_to); 2439 ev_init (&once->to, once_cb_to);
1113 if (timeout >= 0.) 2440 if (timeout >= 0.)
1114 { 2441 {
1115 ev_timer_set (&once->to, timeout, 0.); 2442 ev_timer_set (&once->to, timeout, 0.);
1116 ev_timer_start (&once->to); 2443 ev_timer_start (EV_A_ &once->to);
1117 }
1118 }
1119}
1120
1121/*****************************************************************************/
1122
1123#if 0
1124
1125struct ev_io wio;
1126
1127static void
1128sin_cb (struct ev_io *w, int revents)
1129{
1130 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1131}
1132
1133static void
1134ocb (struct ev_timer *w, int revents)
1135{
1136 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1137 ev_timer_stop (w);
1138 ev_timer_start (w);
1139}
1140
1141static void
1142scb (struct ev_signal *w, int revents)
1143{
1144 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1145 ev_io_stop (&wio);
1146 ev_io_start (&wio);
1147}
1148
1149static void
1150gcb (struct ev_signal *w, int revents)
1151{
1152 fprintf (stderr, "generic %x\n", revents);
1153
1154}
1155
1156int main (void)
1157{
1158 ev_init (0);
1159
1160 ev_io_init (&wio, sin_cb, 0, EV_READ);
1161 ev_io_start (&wio);
1162
1163 struct ev_timer t[10000];
1164
1165#if 0
1166 int i;
1167 for (i = 0; i < 10000; ++i)
1168 { 2444 }
1169 struct ev_timer *w = t + i;
1170 ev_watcher_init (w, ocb, i);
1171 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1172 ev_timer_start (w);
1173 if (drand48 () < 0.5)
1174 ev_timer_stop (w);
1175 }
1176#endif
1177
1178 struct ev_timer t1;
1179 ev_timer_init (&t1, ocb, 5, 10);
1180 ev_timer_start (&t1);
1181
1182 struct ev_signal sig;
1183 ev_signal_init (&sig, scb, SIGQUIT);
1184 ev_signal_start (&sig);
1185
1186 struct ev_check cw;
1187 ev_check_init (&cw, gcb);
1188 ev_check_start (&cw);
1189
1190 struct ev_idle iw;
1191 ev_idle_init (&iw, gcb);
1192 ev_idle_start (&iw);
1193
1194 ev_loop (0);
1195
1196 return 0;
1197} 2445}
1198 2446
2447#if EV_MULTIPLICITY
2448 #include "ev_wrap.h"
1199#endif 2449#endif
1200 2450
2451#ifdef __cplusplus
2452}
2453#endif
1201 2454
1202
1203

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