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Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 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#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
157/**/
158
51#ifndef EV_USE_MONOTONIC 159#ifndef EV_USE_MONOTONIC
52# ifdef CLOCK_MONOTONIC
53# define EV_USE_MONOTONIC 1 160# define EV_USE_MONOTONIC 0
54# endif 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
191#ifndef EV_USE_PORT
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
213#endif
214
215/**/
216
217#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0
220#endif
221
65#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
223# undef EV_USE_REALTIME
66# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
67#endif 225#endif
68#ifndef EV_USE_REALTIME 226
69# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ 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>
70#endif 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
246/**/
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 */
71 257
72#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) */
73#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
74#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
75#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* 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 */
76 261
77#include "ev.h" 262#if __GNUC__ >= 4
263# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline))
265#else
266# define expect(expr,value) (expr)
267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
271#endif
78 272
273#define expect_false(expr) expect ((expr) != 0, 0)
274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
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
79typedef struct ev_watcher *W; 289typedef ev_watcher *W;
80typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
81typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
82 292
83static ev_tstamp 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 EV_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
84ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
85int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
86 399
87static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
88 401
89static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
90static void (*method_modify)(int fd, int oev, int nev);
91static void (*method_poll)(ev_tstamp timeout);
92 403
93/*****************************************************************************/ 404/*****************************************************************************/
94 405
95ev_tstamp 406ev_tstamp
96ev_time (void) 407ev_time (void)
… …
104 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
105 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
106#endif 417#endif
107} 418}
108 419
109static ev_tstamp 420ev_tstamp inline_size
110get_clock (void) 421get_clock (void)
111{ 422{
112#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
113 if (have_monotonic) 424 if (expect_true (have_monotonic))
114 { 425 {
115 struct timespec ts; 426 struct timespec ts;
116 clock_gettime (CLOCK_MONOTONIC, &ts); 427 clock_gettime (CLOCK_MONOTONIC, &ts);
117 return ts.tv_sec + ts.tv_nsec * 1e-9; 428 return ts.tv_sec + ts.tv_nsec * 1e-9;
118 } 429 }
119#endif 430#endif
120 431
121 return ev_time (); 432 return ev_time ();
122} 433}
123 434
124#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
125 442
126#define array_needsize(base,cur,cnt,init) \ 443void
127 if ((cnt) > cur) \ 444ev_sleep (ev_tstamp delay)
128 { \ 445{
129 int newcnt = cur; \ 446 if (delay > 0.)
130 do \
131 { \
132 newcnt = array_roundsize (base, newcnt << 1); \
133 } \
134 while ((cnt) > newcnt); \
135 \
136 base = realloc (base, sizeof (*base) * (newcnt)); \
137 init (base + cur, newcnt - cur); \
138 cur = newcnt; \
139 } 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}
140 467
141/*****************************************************************************/ 468/*****************************************************************************/
142 469
143typedef struct 470int inline_size
471array_nextsize (int elem, int cur, int cnt)
144{ 472{
145 struct ev_io *head; 473 int ncur = cur + 1;
146 unsigned char events;
147 unsigned char reify;
148} ANFD;
149 474
150static ANFD *anfds; 475 do
151static int anfdmax; 476 ncur <<= 1;
477 while (cnt > ncur);
152 478
153static 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
154anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
155{ 552{
156 while (count--) 553 while (count--)
157 { 554 {
158 base->head = 0; 555 base->head = 0;
… …
161 558
162 ++base; 559 ++base;
163 } 560 }
164} 561}
165 562
166typedef struct 563void inline_speed
167{
168 W w;
169 int events;
170} ANPENDING;
171
172static ANPENDING *pendings;
173static int pendingmax, pendingcnt;
174
175static void
176event (W w, int events)
177{
178 if (w->pending)
179 {
180 pendings [w->pending - 1].events |= events;
181 return;
182 }
183
184 w->pending = ++pendingcnt;
185 array_needsize (pendings, pendingmax, pendingcnt, );
186 pendings [pendingcnt - 1].w = w;
187 pendings [pendingcnt - 1].events = events;
188}
189
190static void
191queue_events (W *events, int eventcnt, int type)
192{
193 int i;
194
195 for (i = 0; i < eventcnt; ++i)
196 event (events [i], type);
197}
198
199static void
200fd_event (int fd, int events) 564fd_event (EV_P_ int fd, int revents)
201{ 565{
202 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
203 struct ev_io *w; 567 ev_io *w;
204 568
205 for (w = anfd->head; w; w = w->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
206 { 570 {
207 int ev = w->events & events; 571 int ev = w->events & revents;
208 572
209 if (ev) 573 if (ev)
210 event ((W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
211 } 575 }
212} 576}
213 577
214/*****************************************************************************/ 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}
215 584
216static int *fdchanges; 585void inline_size
217static int fdchangemax, fdchangecnt; 586fd_reify (EV_P)
218
219static void
220fd_reify (void)
221{ 587{
222 int i; 588 int i;
223 589
224 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
225 { 591 {
226 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
227 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
228 struct ev_io *w; 594 ev_io *w;
229 595
230 int events = 0; 596 unsigned char events = 0;
231 597
232 for (w = anfd->head; w; w = w->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
233 events |= w->events; 599 events |= (unsigned char)w->events;
234 600
235 anfd->reify = 0; 601#if EV_SELECT_IS_WINSOCKET
236 602 if (events)
237 if (anfd->events != events)
238 { 603 {
239 method_modify (fd, anfd->events, events); 604 unsigned long argp;
240 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));
241 } 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 }
242 } 624 }
243 625
244 fdchangecnt = 0; 626 fdchangecnt = 0;
245} 627}
246 628
247static void 629void inline_size
248fd_change (int fd) 630fd_change (EV_P_ int fd, int flags)
249{ 631{
250 if (anfds [fd].reify || fdchangecnt < 0) 632 unsigned char reify = anfds [fd].reify;
251 return;
252
253 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
254 634
635 if (expect_true (!reify))
636 {
255 ++fdchangecnt; 637 ++fdchangecnt;
256 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
257 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
258} 663}
259 664
260/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
261static void 666static void noinline
262fd_recheck (void) 667fd_ebadf (EV_P)
263{ 668{
264 int fd; 669 int fd;
265 670
266 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
267 if (anfds [fd].events) 672 if (anfds [fd].events)
268 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
269 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)
270 { 685 {
271 ev_io_stop (anfds [fd].head); 686 fd_kill (EV_A_ fd);
272 event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); 687 return;
273 } 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 }
274} 703}
275 704
276/*****************************************************************************/ 705/*****************************************************************************/
277 706
278static struct ev_timer **timers; 707void inline_speed
279static int timermax, timercnt;
280
281static struct ev_periodic **periodics;
282static int periodicmax, periodiccnt;
283
284static void
285upheap (WT *timers, int k) 708upheap (WT *heap, int k)
286{ 709{
287 WT w = timers [k]; 710 WT w = heap [k];
288 711
289 while (k && timers [k >> 1]->at > w->at) 712 while (k)
290 {
291 timers [k] = timers [k >> 1];
292 timers [k]->active = k + 1;
293 k >>= 1;
294 } 713 {
295
296 timers [k] = w;
297 timers [k]->active = k + 1;
298
299}
300
301static void
302downheap (WT *timers, int N, int k)
303{
304 WT w = timers [k];
305
306 while (k < (N >> 1))
307 {
308 int j = k << 1; 714 int p = (k - 1) >> 1;
309 715
310 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 716 if (heap [p]->at <= w->at)
311 ++j;
312
313 if (w->at <= timers [j]->at)
314 break; 717 break;
315 718
316 timers [k] = timers [j]; 719 heap [k] = heap [p];
317 timers [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
318 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 (;;)
319 } 734 {
735 int c = (k << 1) + 1;
320 736
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
321 timers [k] = w; 752 heap [k] = w;
322 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);
323} 761}
324 762
325/*****************************************************************************/ 763/*****************************************************************************/
326 764
327typedef struct 765typedef struct
328{ 766{
329 struct ev_signal *head; 767 WL head;
330 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
331} ANSIG; 769} ANSIG;
332 770
333static ANSIG *signals; 771static ANSIG *signals;
334static int signalmax; 772static int signalmax;
335 773
336static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
337static sig_atomic_t volatile gotsig;
338static struct ev_io sigev;
339 775
340static void 776void inline_size
341signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
342{ 778{
343 while (count--) 779 while (count--)
344 { 780 {
345 base->head = 0; 781 base->head = 0;
… …
347 783
348 ++base; 784 ++base;
349 } 785 }
350} 786}
351 787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd)
792{
793#ifdef _WIN32
794 int arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif
800}
801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
852#if EV_ASYNC_ENABLE
853 if (gotasync)
854 {
855 int i;
856 gotasync = 0;
857
858 for (i = asynccnt; i--; )
859 if (asyncs [i]->sent)
860 {
861 asyncs [i]->sent = 0;
862 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
863 }
864 }
865#endif
866}
867
868/*****************************************************************************/
869
352static void 870static void
353sighandler (int signum) 871sighandler (int signum)
354{ 872{
873#if EV_MULTIPLICITY
874 struct ev_loop *loop = &default_loop_struct;
875#endif
876
877#if _WIN32
878 signal (signum, sighandler);
879#endif
880
355 signals [signum - 1].gotsig = 1; 881 signals [signum - 1].gotsig = 1;
356 882 evpipe_write (EV_A_ 1, 0);
357 if (!gotsig)
358 {
359 gotsig = 1;
360 write (sigpipe [1], &signum, 1);
361 }
362} 883}
363 884
364static void 885void noinline
365sigcb (struct ev_io *iow, int revents) 886ev_feed_signal_event (EV_P_ int signum)
366{ 887{
367 struct ev_signal *w; 888 WL w;
368 int sig;
369 889
370 read (sigpipe [0], &revents, 1); 890#if EV_MULTIPLICITY
371 gotsig = 0; 891 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
892#endif
372 893
373 for (sig = signalmax; sig--; ) 894 --signum;
374 if (signals [sig].gotsig) 895
375 { 896 if (signum < 0 || signum >= signalmax)
897 return;
898
376 signals [sig].gotsig = 0; 899 signals [signum].gotsig = 0;
377 900
378 for (w = signals [sig].head; w; w = w->next) 901 for (w = signals [signum].head; w; w = w->next)
379 event ((W)w, EV_SIGNAL); 902 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
380 }
381}
382
383static void
384siginit (void)
385{
386 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
387 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
388
389 /* rather than sort out wether we really need nb, set it */
390 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
391 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
392
393 ev_io_set (&sigev, sigpipe [0], EV_READ);
394 ev_io_start (&sigev);
395} 903}
396 904
397/*****************************************************************************/ 905/*****************************************************************************/
398 906
399static struct ev_idle **idles; 907static WL childs [EV_PID_HASHSIZE];
400static int idlemax, idlecnt;
401 908
402static struct ev_prepare **prepares; 909#ifndef _WIN32
403static int preparemax, preparecnt;
404 910
405static struct ev_check **checks;
406static int checkmax, checkcnt;
407
408/*****************************************************************************/
409
410static struct ev_child *childs [PID_HASHSIZE];
411static struct ev_signal childev; 911static ev_signal childev;
912
913#ifndef WIFCONTINUED
914# define WIFCONTINUED(status) 0
915#endif
916
917void inline_speed
918child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
919{
920 ev_child *w;
921 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
922
923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
924 {
925 if ((w->pid == pid || !w->pid)
926 && (!traced || (w->flags & 1)))
927 {
928 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
929 w->rpid = pid;
930 w->rstatus = status;
931 ev_feed_event (EV_A_ (W)w, EV_CHILD);
932 }
933 }
934}
412 935
413#ifndef WCONTINUED 936#ifndef WCONTINUED
414# define WCONTINUED 0 937# define WCONTINUED 0
415#endif 938#endif
416 939
417static void 940static void
418childcb (struct ev_signal *sw, int revents) 941childcb (EV_P_ ev_signal *sw, int revents)
419{ 942{
420 struct ev_child *w;
421 int pid, status; 943 int pid, status;
422 944
945 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
423 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 946 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
424 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 947 if (!WCONTINUED
425 if (w->pid == pid || w->pid == -1) 948 || errno != EINVAL
426 { 949 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
427 w->status = status; 950 return;
428 event ((W)w, EV_CHILD); 951
429 } 952 /* make sure we are called again until all childs have been reaped */
953 /* we need to do it this way so that the callback gets called before we continue */
954 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
955
956 child_reap (EV_A_ sw, pid, pid, status);
957 if (EV_PID_HASHSIZE > 1)
958 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
430} 959}
960
961#endif
431 962
432/*****************************************************************************/ 963/*****************************************************************************/
433 964
965#if EV_USE_PORT
966# include "ev_port.c"
967#endif
968#if EV_USE_KQUEUE
969# include "ev_kqueue.c"
970#endif
434#if EV_USE_EPOLL 971#if EV_USE_EPOLL
435# include "ev_epoll.c" 972# include "ev_epoll.c"
436#endif 973#endif
974#if EV_USE_POLL
975# include "ev_poll.c"
976#endif
437#if EV_USE_SELECT 977#if EV_USE_SELECT
438# include "ev_select.c" 978# include "ev_select.c"
439#endif 979#endif
440 980
441int 981int
… …
448ev_version_minor (void) 988ev_version_minor (void)
449{ 989{
450 return EV_VERSION_MINOR; 990 return EV_VERSION_MINOR;
451} 991}
452 992
453int ev_init (int flags) 993/* return true if we are running with elevated privileges and should ignore env variables */
994int inline_size
995enable_secure (void)
454{ 996{
455 if (!ev_method) 997#ifdef _WIN32
998 return 0;
999#else
1000 return getuid () != geteuid ()
1001 || getgid () != getegid ();
1002#endif
1003}
1004
1005unsigned int
1006ev_supported_backends (void)
1007{
1008 unsigned int flags = 0;
1009
1010 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1011 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1012 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1013 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1014 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1015
1016 return flags;
1017}
1018
1019unsigned int
1020ev_recommended_backends (void)
1021{
1022 unsigned int flags = ev_supported_backends ();
1023
1024#ifndef __NetBSD__
1025 /* kqueue is borked on everything but netbsd apparently */
1026 /* it usually doesn't work correctly on anything but sockets and pipes */
1027 flags &= ~EVBACKEND_KQUEUE;
1028#endif
1029#ifdef __APPLE__
1030 // flags &= ~EVBACKEND_KQUEUE; for documentation
1031 flags &= ~EVBACKEND_POLL;
1032#endif
1033
1034 return flags;
1035}
1036
1037unsigned int
1038ev_embeddable_backends (void)
1039{
1040 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1041
1042 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1043 /* please fix it and tell me how to detect the fix */
1044 flags &= ~EVBACKEND_EPOLL;
1045
1046 return flags;
1047}
1048
1049unsigned int
1050ev_backend (EV_P)
1051{
1052 return backend;
1053}
1054
1055unsigned int
1056ev_loop_count (EV_P)
1057{
1058 return loop_count;
1059}
1060
1061void
1062ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1063{
1064 io_blocktime = interval;
1065}
1066
1067void
1068ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1069{
1070 timeout_blocktime = interval;
1071}
1072
1073static void noinline
1074loop_init (EV_P_ unsigned int flags)
1075{
1076 if (!backend)
456 { 1077 {
457#if EV_USE_MONOTONIC 1078#if EV_USE_MONOTONIC
458 { 1079 {
459 struct timespec ts; 1080 struct timespec ts;
460 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1081 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
461 have_monotonic = 1; 1082 have_monotonic = 1;
462 } 1083 }
463#endif 1084#endif
464 1085
465 ev_now = ev_time (); 1086 ev_rt_now = ev_time ();
466 now = get_clock (); 1087 mn_now = get_clock ();
1088 now_floor = mn_now;
467 diff = ev_now - now; 1089 rtmn_diff = ev_rt_now - mn_now;
468 1090
469 if (pipe (sigpipe)) 1091 io_blocktime = 0.;
470 return 0; 1092 timeout_blocktime = 0.;
1093 backend = 0;
1094 backend_fd = -1;
1095 gotasync = 0;
1096#if EV_USE_INOTIFY
1097 fs_fd = -2;
1098#endif
471 1099
472 ev_method = EVMETHOD_NONE; 1100 /* pid check not overridable via env */
1101#ifndef _WIN32
1102 if (flags & EVFLAG_FORKCHECK)
1103 curpid = getpid ();
1104#endif
1105
1106 if (!(flags & EVFLAG_NOENV)
1107 && !enable_secure ()
1108 && getenv ("LIBEV_FLAGS"))
1109 flags = atoi (getenv ("LIBEV_FLAGS"));
1110
1111 if (!(flags & 0x0000ffffUL))
1112 flags |= ev_recommended_backends ();
1113
1114#if EV_USE_PORT
1115 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1116#endif
1117#if EV_USE_KQUEUE
1118 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1119#endif
473#if EV_USE_EPOLL 1120#if EV_USE_EPOLL
474 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1121 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1122#endif
1123#if EV_USE_POLL
1124 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
475#endif 1125#endif
476#if EV_USE_SELECT 1126#if EV_USE_SELECT
477 if (ev_method == EVMETHOD_NONE) select_init (flags); 1127 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
478#endif 1128#endif
479 1129
480 if (ev_method) 1130 ev_init (&pipeev, pipecb);
1131 ev_set_priority (&pipeev, EV_MAXPRI);
1132 }
1133}
1134
1135static void noinline
1136loop_destroy (EV_P)
1137{
1138 int i;
1139
1140 if (ev_is_active (&pipeev))
1141 {
1142 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &pipeev);
1144
1145 close (evpipe [0]); evpipe [0] = 0;
1146 close (evpipe [1]); evpipe [1] = 0;
1147 }
1148
1149#if EV_USE_INOTIFY
1150 if (fs_fd >= 0)
1151 close (fs_fd);
1152#endif
1153
1154 if (backend_fd >= 0)
1155 close (backend_fd);
1156
1157#if EV_USE_PORT
1158 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1159#endif
1160#if EV_USE_KQUEUE
1161 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1162#endif
1163#if EV_USE_EPOLL
1164 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1165#endif
1166#if EV_USE_POLL
1167 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1168#endif
1169#if EV_USE_SELECT
1170 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1171#endif
1172
1173 for (i = NUMPRI; i--; )
1174 {
1175 array_free (pending, [i]);
1176#if EV_IDLE_ENABLE
1177 array_free (idle, [i]);
1178#endif
1179 }
1180
1181 ev_free (anfds); anfdmax = 0;
1182
1183 /* have to use the microsoft-never-gets-it-right macro */
1184 array_free (fdchange, EMPTY);
1185 array_free (timer, EMPTY);
1186#if EV_PERIODIC_ENABLE
1187 array_free (periodic, EMPTY);
1188#endif
1189#if EV_FORK_ENABLE
1190 array_free (fork, EMPTY);
1191#endif
1192 array_free (prepare, EMPTY);
1193 array_free (check, EMPTY);
1194#if EV_ASYNC_ENABLE
1195 array_free (async, EMPTY);
1196#endif
1197
1198 backend = 0;
1199}
1200
1201void inline_size infy_fork (EV_P);
1202
1203void inline_size
1204loop_fork (EV_P)
1205{
1206#if EV_USE_PORT
1207 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1208#endif
1209#if EV_USE_KQUEUE
1210 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1211#endif
1212#if EV_USE_EPOLL
1213 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1214#endif
1215#if EV_USE_INOTIFY
1216 infy_fork (EV_A);
1217#endif
1218
1219 if (ev_is_active (&pipeev))
1220 {
1221 /* this "locks" the handlers against writing to the pipe */
1222 gotsig = gotasync = 1;
1223
1224 ev_ref (EV_A);
1225 ev_io_stop (EV_A_ &pipeev);
1226 close (evpipe [0]);
1227 close (evpipe [1]);
1228
1229 evpipe_init (EV_A);
1230 /* now iterate over everything, in case we missed something */
1231 pipecb (EV_A_ &pipeev, EV_READ);
1232 }
1233
1234 postfork = 0;
1235}
1236
1237#if EV_MULTIPLICITY
1238struct ev_loop *
1239ev_loop_new (unsigned int flags)
1240{
1241 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1242
1243 memset (loop, 0, sizeof (struct ev_loop));
1244
1245 loop_init (EV_A_ flags);
1246
1247 if (ev_backend (EV_A))
1248 return loop;
1249
1250 return 0;
1251}
1252
1253void
1254ev_loop_destroy (EV_P)
1255{
1256 loop_destroy (EV_A);
1257 ev_free (loop);
1258}
1259
1260void
1261ev_loop_fork (EV_P)
1262{
1263 postfork = 1; /* must be in line with ev_default_fork */
1264}
1265
1266#endif
1267
1268#if EV_MULTIPLICITY
1269struct ev_loop *
1270ev_default_loop_init (unsigned int flags)
1271#else
1272int
1273ev_default_loop (unsigned int flags)
1274#endif
1275{
1276 if (!ev_default_loop_ptr)
1277 {
1278#if EV_MULTIPLICITY
1279 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1280#else
1281 ev_default_loop_ptr = 1;
1282#endif
1283
1284 loop_init (EV_A_ flags);
1285
1286 if (ev_backend (EV_A))
481 { 1287 {
482 ev_watcher_init (&sigev, sigcb); 1288#ifndef _WIN32
483 siginit ();
484
485 ev_signal_init (&childev, childcb, SIGCHLD); 1289 ev_signal_init (&childev, childcb, SIGCHLD);
1290 ev_set_priority (&childev, EV_MAXPRI);
486 ev_signal_start (&childev); 1291 ev_signal_start (EV_A_ &childev);
1292 ev_unref (EV_A); /* child watcher should not keep loop alive */
1293#endif
487 } 1294 }
1295 else
1296 ev_default_loop_ptr = 0;
488 } 1297 }
489 1298
490 return ev_method; 1299 return ev_default_loop_ptr;
1300}
1301
1302void
1303ev_default_destroy (void)
1304{
1305#if EV_MULTIPLICITY
1306 struct ev_loop *loop = ev_default_loop_ptr;
1307#endif
1308
1309#ifndef _WIN32
1310 ev_ref (EV_A); /* child watcher */
1311 ev_signal_stop (EV_A_ &childev);
1312#endif
1313
1314 loop_destroy (EV_A);
1315}
1316
1317void
1318ev_default_fork (void)
1319{
1320#if EV_MULTIPLICITY
1321 struct ev_loop *loop = ev_default_loop_ptr;
1322#endif
1323
1324 if (backend)
1325 postfork = 1; /* must be in line with ev_loop_fork */
491} 1326}
492 1327
493/*****************************************************************************/ 1328/*****************************************************************************/
494 1329
495void 1330void
496ev_fork_prepare (void) 1331ev_invoke (EV_P_ void *w, int revents)
497{ 1332{
498 /* nop */ 1333 EV_CB_INVOKE ((W)w, revents);
499} 1334}
500 1335
501void 1336void inline_speed
502ev_fork_parent (void)
503{
504 /* nop */
505}
506
507void
508ev_fork_child (void)
509{
510#if EV_USE_EPOLL
511 if (ev_method == EVMETHOD_EPOLL)
512 epoll_postfork_child ();
513#endif
514
515 ev_io_stop (&sigev);
516 close (sigpipe [0]);
517 close (sigpipe [1]);
518 pipe (sigpipe);
519 siginit ();
520}
521
522/*****************************************************************************/
523
524static void
525call_pending (void) 1337call_pending (EV_P)
526{ 1338{
1339 int pri;
1340
1341 for (pri = NUMPRI; pri--; )
527 while (pendingcnt) 1342 while (pendingcnt [pri])
528 { 1343 {
529 ANPENDING *p = pendings + --pendingcnt; 1344 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
530 1345
531 if (p->w) 1346 if (expect_true (p->w))
532 { 1347 {
1348 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1349
533 p->w->pending = 0; 1350 p->w->pending = 0;
534 p->w->cb (p->w, p->events); 1351 EV_CB_INVOKE (p->w, p->events);
535 } 1352 }
536 } 1353 }
537} 1354}
538 1355
539static void 1356void inline_size
540timers_reify (void) 1357timers_reify (EV_P)
541{ 1358{
542 while (timercnt && timers [0]->at <= now) 1359 while (timercnt && ((WT)timers [0])->at <= mn_now)
543 { 1360 {
544 struct ev_timer *w = timers [0]; 1361 ev_timer *w = (ev_timer *)timers [0];
1362
1363 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
545 1364
546 /* first reschedule or stop timer */ 1365 /* first reschedule or stop timer */
547 if (w->repeat) 1366 if (w->repeat)
548 { 1367 {
549 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1368 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1369
550 w->at = now + w->repeat; 1370 ((WT)w)->at += w->repeat;
1371 if (((WT)w)->at < mn_now)
1372 ((WT)w)->at = mn_now;
1373
551 downheap ((WT *)timers, timercnt, 0); 1374 downheap (timers, timercnt, 0);
552 } 1375 }
553 else 1376 else
554 ev_timer_stop (w); /* nonrepeating: stop timer */ 1377 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
555 1378
556 event ((W)w, EV_TIMEOUT); 1379 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
557 } 1380 }
558} 1381}
559 1382
560static void 1383#if EV_PERIODIC_ENABLE
1384void inline_size
561periodics_reify (void) 1385periodics_reify (EV_P)
562{ 1386{
563 while (periodiccnt && periodics [0]->at <= ev_now) 1387 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
564 { 1388 {
565 struct ev_periodic *w = periodics [0]; 1389 ev_periodic *w = (ev_periodic *)periodics [0];
1390
1391 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
566 1392
567 /* first reschedule or stop timer */ 1393 /* first reschedule or stop timer */
568 if (w->interval) 1394 if (w->reschedule_cb)
569 { 1395 {
1396 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1397 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1398 downheap (periodics, periodiccnt, 0);
1399 }
1400 else if (w->interval)
1401 {
570 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1402 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1403 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
571 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); 1404 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
572 downheap ((WT *)periodics, periodiccnt, 0); 1405 downheap (periodics, periodiccnt, 0);
573 } 1406 }
574 else 1407 else
575 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1408 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
576 1409
577 event ((W)w, EV_PERIODIC); 1410 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
578 } 1411 }
579} 1412}
580 1413
581static void 1414static void noinline
582periodics_reschedule (ev_tstamp diff) 1415periodics_reschedule (EV_P)
583{ 1416{
584 int i; 1417 int i;
585 1418
586 /* adjust periodics after time jump */ 1419 /* adjust periodics after time jump */
587 for (i = 0; i < periodiccnt; ++i) 1420 for (i = 0; i < periodiccnt; ++i)
588 { 1421 {
589 struct ev_periodic *w = periodics [i]; 1422 ev_periodic *w = (ev_periodic *)periodics [i];
590 1423
1424 if (w->reschedule_cb)
1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
591 if (w->interval) 1426 else if (w->interval)
1427 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1428 }
1429
1430 /* now rebuild the heap */
1431 for (i = periodiccnt >> 1; i--; )
1432 downheap (periodics, periodiccnt, i);
1433}
1434#endif
1435
1436#if EV_IDLE_ENABLE
1437void inline_size
1438idle_reify (EV_P)
1439{
1440 if (expect_false (idleall))
1441 {
1442 int pri;
1443
1444 for (pri = NUMPRI; pri--; )
592 { 1445 {
593 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1446 if (pendingcnt [pri])
1447 break;
594 1448
595 if (fabs (diff) >= 1e-4) 1449 if (idlecnt [pri])
596 { 1450 {
597 ev_periodic_stop (w); 1451 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
598 ev_periodic_start (w); 1452 break;
599
600 i = 0; /* restart loop, inefficient, but time jumps should be rare */
601 } 1453 }
602 } 1454 }
603 } 1455 }
604} 1456}
1457#endif
605 1458
606static void 1459void inline_speed
607time_update (void) 1460time_update (EV_P_ ev_tstamp max_block)
608{ 1461{
609 int i; 1462 int i;
610 1463
611 ev_now = ev_time (); 1464#if EV_USE_MONOTONIC
612
613 if (have_monotonic) 1465 if (expect_true (have_monotonic))
614 { 1466 {
615 ev_tstamp odiff = diff; 1467 ev_tstamp odiff = rtmn_diff;
616 1468
617 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1469 mn_now = get_clock ();
1470
1471 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1472 /* interpolate in the meantime */
1473 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
618 { 1474 {
619 now = get_clock (); 1475 ev_rt_now = rtmn_diff + mn_now;
1476 return;
1477 }
1478
1479 now_floor = mn_now;
1480 ev_rt_now = ev_time ();
1481
1482 /* loop a few times, before making important decisions.
1483 * on the choice of "4": one iteration isn't enough,
1484 * in case we get preempted during the calls to
1485 * ev_time and get_clock. a second call is almost guaranteed
1486 * to succeed in that case, though. and looping a few more times
1487 * doesn't hurt either as we only do this on time-jumps or
1488 * in the unlikely event of having been preempted here.
1489 */
1490 for (i = 4; --i; )
1491 {
620 diff = ev_now - now; 1492 rtmn_diff = ev_rt_now - mn_now;
621 1493
622 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1494 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
623 return; /* all is well */ 1495 return; /* all is well */
624 1496
625 ev_now = ev_time (); 1497 ev_rt_now = ev_time ();
1498 mn_now = get_clock ();
1499 now_floor = mn_now;
626 } 1500 }
627 1501
1502# if EV_PERIODIC_ENABLE
628 periodics_reschedule (diff - odiff); 1503 periodics_reschedule (EV_A);
1504# endif
629 /* no timer adjustment, as the monotonic clock doesn't jump */ 1505 /* no timer adjustment, as the monotonic clock doesn't jump */
1506 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
630 } 1507 }
631 else 1508 else
1509#endif
632 { 1510 {
633 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1511 ev_rt_now = ev_time ();
1512
1513 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
634 { 1514 {
1515#if EV_PERIODIC_ENABLE
635 periodics_reschedule (ev_now - now); 1516 periodics_reschedule (EV_A);
636 1517#endif
637 /* adjust timers. this is easy, as the offset is the same for all */ 1518 /* adjust timers. this is easy, as the offset is the same for all of them */
638 for (i = 0; i < timercnt; ++i) 1519 for (i = 0; i < timercnt; ++i)
639 timers [i]->at += diff; 1520 ((WT)timers [i])->at += ev_rt_now - mn_now;
640 } 1521 }
641 1522
642 now = ev_now; 1523 mn_now = ev_rt_now;
643 } 1524 }
644} 1525}
645 1526
646int ev_loop_done; 1527void
1528ev_ref (EV_P)
1529{
1530 ++activecnt;
1531}
647 1532
1533void
1534ev_unref (EV_P)
1535{
1536 --activecnt;
1537}
1538
1539static int loop_done;
1540
1541void
648void ev_loop (int flags) 1542ev_loop (EV_P_ int flags)
649{ 1543{
650 double block;
651 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1544 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1545 ? EVUNLOOP_ONE
1546 : EVUNLOOP_CANCEL;
1547
1548 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
652 1549
653 do 1550 do
654 { 1551 {
1552#ifndef _WIN32
1553 if (expect_false (curpid)) /* penalise the forking check even more */
1554 if (expect_false (getpid () != curpid))
1555 {
1556 curpid = getpid ();
1557 postfork = 1;
1558 }
1559#endif
1560
1561#if EV_FORK_ENABLE
1562 /* we might have forked, so queue fork handlers */
1563 if (expect_false (postfork))
1564 if (forkcnt)
1565 {
1566 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1567 call_pending (EV_A);
1568 }
1569#endif
1570
655 /* queue check watchers (and execute them) */ 1571 /* queue prepare watchers (and execute them) */
656 if (preparecnt) 1572 if (expect_false (preparecnt))
657 { 1573 {
658 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1574 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
659 call_pending (); 1575 call_pending (EV_A);
660 } 1576 }
661 1577
1578 if (expect_false (!activecnt))
1579 break;
1580
1581 /* we might have forked, so reify kernel state if necessary */
1582 if (expect_false (postfork))
1583 loop_fork (EV_A);
1584
662 /* update fd-related kernel structures */ 1585 /* update fd-related kernel structures */
663 fd_reify (); 1586 fd_reify (EV_A);
664 1587
665 /* calculate blocking time */ 1588 /* calculate blocking time */
1589 {
1590 ev_tstamp waittime = 0.;
1591 ev_tstamp sleeptime = 0.;
666 1592
667 /* we only need this for !monotonic clockor timers, but as we basically 1593 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
668 always have timers, we just calculate it always */
669 ev_now = ev_time ();
670
671 if (flags & EVLOOP_NONBLOCK || idlecnt)
672 block = 0.;
673 else
674 { 1594 {
1595 /* update time to cancel out callback processing overhead */
1596 time_update (EV_A_ 1e100);
1597
675 block = MAX_BLOCKTIME; 1598 waittime = MAX_BLOCKTIME;
676 1599
677 if (timercnt) 1600 if (timercnt)
678 { 1601 {
679 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1602 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
680 if (block > to) block = to; 1603 if (waittime > to) waittime = to;
681 } 1604 }
682 1605
1606#if EV_PERIODIC_ENABLE
683 if (periodiccnt) 1607 if (periodiccnt)
684 { 1608 {
685 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1609 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
686 if (block > to) block = to; 1610 if (waittime > to) waittime = to;
687 } 1611 }
1612#endif
688 1613
689 if (block < 0.) block = 0.; 1614 if (expect_false (waittime < timeout_blocktime))
1615 waittime = timeout_blocktime;
1616
1617 sleeptime = waittime - backend_fudge;
1618
1619 if (expect_true (sleeptime > io_blocktime))
1620 sleeptime = io_blocktime;
1621
1622 if (sleeptime)
1623 {
1624 ev_sleep (sleeptime);
1625 waittime -= sleeptime;
1626 }
690 } 1627 }
691 1628
692 method_poll (block); 1629 ++loop_count;
1630 backend_poll (EV_A_ waittime);
693 1631
694 /* update ev_now, do magic */ 1632 /* update ev_rt_now, do magic */
695 time_update (); 1633 time_update (EV_A_ waittime + sleeptime);
1634 }
696 1635
697 /* queue pending timers and reschedule them */ 1636 /* queue pending timers and reschedule them */
698 timers_reify (); /* relative timers called last */ 1637 timers_reify (EV_A); /* relative timers called last */
1638#if EV_PERIODIC_ENABLE
699 periodics_reify (); /* absolute timers called first */ 1639 periodics_reify (EV_A); /* absolute timers called first */
1640#endif
700 1641
1642#if EV_IDLE_ENABLE
701 /* queue idle watchers unless io or timers are pending */ 1643 /* queue idle watchers unless other events are pending */
702 if (!pendingcnt) 1644 idle_reify (EV_A);
703 queue_events ((W *)idles, idlecnt, EV_IDLE); 1645#endif
704 1646
705 /* queue check watchers, to be executed first */ 1647 /* queue check watchers, to be executed first */
706 if (checkcnt) 1648 if (expect_false (checkcnt))
707 queue_events ((W *)checks, checkcnt, EV_CHECK); 1649 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
708 1650
709 call_pending (); 1651 call_pending (EV_A);
710 }
711 while (!ev_loop_done);
712 1652
713 if (ev_loop_done != 2) 1653 }
1654 while (expect_true (activecnt && !loop_done));
1655
1656 if (loop_done == EVUNLOOP_ONE)
1657 loop_done = EVUNLOOP_CANCEL;
1658}
1659
1660void
1661ev_unloop (EV_P_ int how)
1662{
714 ev_loop_done = 0; 1663 loop_done = how;
715} 1664}
716 1665
717/*****************************************************************************/ 1666/*****************************************************************************/
718 1667
719static void 1668void inline_size
720wlist_add (WL *head, WL elem) 1669wlist_add (WL *head, WL elem)
721{ 1670{
722 elem->next = *head; 1671 elem->next = *head;
723 *head = elem; 1672 *head = elem;
724} 1673}
725 1674
726static void 1675void inline_size
727wlist_del (WL *head, WL elem) 1676wlist_del (WL *head, WL elem)
728{ 1677{
729 while (*head) 1678 while (*head)
730 { 1679 {
731 if (*head == elem) 1680 if (*head == elem)
… …
736 1685
737 head = &(*head)->next; 1686 head = &(*head)->next;
738 } 1687 }
739} 1688}
740 1689
741static void 1690void inline_speed
742ev_clear_pending (W w) 1691clear_pending (EV_P_ W w)
743{ 1692{
744 if (w->pending) 1693 if (w->pending)
745 { 1694 {
746 pendings [w->pending - 1].w = 0; 1695 pendings [ABSPRI (w)][w->pending - 1].w = 0;
747 w->pending = 0; 1696 w->pending = 0;
748 } 1697 }
749} 1698}
750 1699
751static void 1700int
1701ev_clear_pending (EV_P_ void *w)
1702{
1703 W w_ = (W)w;
1704 int pending = w_->pending;
1705
1706 if (expect_true (pending))
1707 {
1708 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1709 w_->pending = 0;
1710 p->w = 0;
1711 return p->events;
1712 }
1713 else
1714 return 0;
1715}
1716
1717void inline_size
1718pri_adjust (EV_P_ W w)
1719{
1720 int pri = w->priority;
1721 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1722 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1723 w->priority = pri;
1724}
1725
1726void inline_speed
752ev_start (W w, int active) 1727ev_start (EV_P_ W w, int active)
753{ 1728{
1729 pri_adjust (EV_A_ w);
754 w->active = active; 1730 w->active = active;
1731 ev_ref (EV_A);
755} 1732}
756 1733
757static void 1734void inline_size
758ev_stop (W w) 1735ev_stop (EV_P_ W w)
759{ 1736{
1737 ev_unref (EV_A);
760 w->active = 0; 1738 w->active = 0;
761} 1739}
762 1740
763/*****************************************************************************/ 1741/*****************************************************************************/
764 1742
765void 1743void noinline
766ev_io_start (struct ev_io *w) 1744ev_io_start (EV_P_ ev_io *w)
767{ 1745{
768 if (ev_is_active (w))
769 return;
770
771 int fd = w->fd; 1746 int fd = w->fd;
772 1747
1748 if (expect_false (ev_is_active (w)))
1749 return;
1750
773 assert (("ev_io_start called with negative fd", fd >= 0)); 1751 assert (("ev_io_start called with negative fd", fd >= 0));
774 1752
775 ev_start ((W)w, 1); 1753 ev_start (EV_A_ (W)w, 1);
776 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1754 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
777 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1755 wlist_add (&anfds[fd].head, (WL)w);
778 1756
779 fd_change (fd); 1757 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1758 w->events &= ~EV_IOFDSET;
780} 1759}
781 1760
782void 1761void noinline
783ev_io_stop (struct ev_io *w) 1762ev_io_stop (EV_P_ ev_io *w)
784{ 1763{
785 ev_clear_pending ((W)w); 1764 clear_pending (EV_A_ (W)w);
786 if (!ev_is_active (w)) 1765 if (expect_false (!ev_is_active (w)))
787 return; 1766 return;
788 1767
1768 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1769
789 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1770 wlist_del (&anfds[w->fd].head, (WL)w);
790 ev_stop ((W)w); 1771 ev_stop (EV_A_ (W)w);
791 1772
792 fd_change (w->fd); 1773 fd_change (EV_A_ w->fd, 1);
793} 1774}
794 1775
795void 1776void noinline
796ev_timer_start (struct ev_timer *w) 1777ev_timer_start (EV_P_ ev_timer *w)
797{ 1778{
798 if (ev_is_active (w)) 1779 if (expect_false (ev_is_active (w)))
799 return; 1780 return;
800 1781
801 w->at += now; 1782 ((WT)w)->at += mn_now;
802 1783
803 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1784 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
804 1785
805 ev_start ((W)w, ++timercnt); 1786 ev_start (EV_A_ (W)w, ++timercnt);
806 array_needsize (timers, timermax, timercnt, ); 1787 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
807 timers [timercnt - 1] = w; 1788 timers [timercnt - 1] = (WT)w;
808 upheap ((WT *)timers, timercnt - 1); 1789 upheap (timers, timercnt - 1);
809}
810 1790
811void 1791 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1792}
1793
1794void noinline
812ev_timer_stop (struct ev_timer *w) 1795ev_timer_stop (EV_P_ ev_timer *w)
813{ 1796{
814 ev_clear_pending ((W)w); 1797 clear_pending (EV_A_ (W)w);
815 if (!ev_is_active (w)) 1798 if (expect_false (!ev_is_active (w)))
816 return; 1799 return;
817 1800
818 if (w->active < timercnt--) 1801 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1802
1803 {
1804 int active = ((W)w)->active;
1805
1806 if (expect_true (--active < --timercnt))
819 { 1807 {
820 timers [w->active - 1] = timers [timercnt]; 1808 timers [active] = timers [timercnt];
821 downheap ((WT *)timers, timercnt, w->active - 1); 1809 adjustheap (timers, timercnt, active);
822 } 1810 }
1811 }
823 1812
824 w->at = w->repeat; 1813 ((WT)w)->at -= mn_now;
825 1814
826 ev_stop ((W)w); 1815 ev_stop (EV_A_ (W)w);
827} 1816}
828 1817
829void 1818void noinline
830ev_timer_again (struct ev_timer *w) 1819ev_timer_again (EV_P_ ev_timer *w)
831{ 1820{
832 if (ev_is_active (w)) 1821 if (ev_is_active (w))
833 { 1822 {
834 if (w->repeat) 1823 if (w->repeat)
835 { 1824 {
836 w->at = now + w->repeat; 1825 ((WT)w)->at = mn_now + w->repeat;
837 downheap ((WT *)timers, timercnt, w->active - 1); 1826 adjustheap (timers, timercnt, ((W)w)->active - 1);
838 } 1827 }
839 else 1828 else
840 ev_timer_stop (w); 1829 ev_timer_stop (EV_A_ w);
841 } 1830 }
842 else if (w->repeat) 1831 else if (w->repeat)
1832 {
1833 w->at = w->repeat;
843 ev_timer_start (w); 1834 ev_timer_start (EV_A_ w);
1835 }
844} 1836}
845 1837
846void 1838#if EV_PERIODIC_ENABLE
1839void noinline
847ev_periodic_start (struct ev_periodic *w) 1840ev_periodic_start (EV_P_ ev_periodic *w)
848{ 1841{
849 if (ev_is_active (w)) 1842 if (expect_false (ev_is_active (w)))
850 return; 1843 return;
851 1844
1845 if (w->reschedule_cb)
1846 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1847 else if (w->interval)
1848 {
852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1849 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
853
854 /* this formula differs from the one in periodic_reify because we do not always round up */ 1850 /* this formula differs from the one in periodic_reify because we do not always round up */
855 if (w->interval)
856 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1851 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1852 }
1853 else
1854 ((WT)w)->at = w->offset;
857 1855
858 ev_start ((W)w, ++periodiccnt); 1856 ev_start (EV_A_ (W)w, ++periodiccnt);
859 array_needsize (periodics, periodicmax, periodiccnt, ); 1857 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
860 periodics [periodiccnt - 1] = w; 1858 periodics [periodiccnt - 1] = (WT)w;
861 upheap ((WT *)periodics, periodiccnt - 1); 1859 upheap (periodics, periodiccnt - 1);
862}
863 1860
864void 1861 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1862}
1863
1864void noinline
865ev_periodic_stop (struct ev_periodic *w) 1865ev_periodic_stop (EV_P_ ev_periodic *w)
866{ 1866{
867 ev_clear_pending ((W)w); 1867 clear_pending (EV_A_ (W)w);
868 if (!ev_is_active (w)) 1868 if (expect_false (!ev_is_active (w)))
869 return; 1869 return;
870 1870
871 if (w->active < periodiccnt--) 1871 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1872
1873 {
1874 int active = ((W)w)->active;
1875
1876 if (expect_true (--active < --periodiccnt))
872 { 1877 {
873 periodics [w->active - 1] = periodics [periodiccnt]; 1878 periodics [active] = periodics [periodiccnt];
874 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1879 adjustheap (periodics, periodiccnt, active);
875 } 1880 }
1881 }
876 1882
877 ev_stop ((W)w); 1883 ev_stop (EV_A_ (W)w);
878} 1884}
879 1885
880void 1886void noinline
1887ev_periodic_again (EV_P_ ev_periodic *w)
1888{
1889 /* TODO: use adjustheap and recalculation */
1890 ev_periodic_stop (EV_A_ w);
1891 ev_periodic_start (EV_A_ w);
1892}
1893#endif
1894
1895#ifndef SA_RESTART
1896# define SA_RESTART 0
1897#endif
1898
1899void noinline
881ev_signal_start (struct ev_signal *w) 1900ev_signal_start (EV_P_ ev_signal *w)
882{ 1901{
1902#if EV_MULTIPLICITY
1903 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1904#endif
883 if (ev_is_active (w)) 1905 if (expect_false (ev_is_active (w)))
884 return; 1906 return;
885 1907
886 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1908 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
887 1909
888 ev_start ((W)w, 1); 1910 evpipe_init (EV_A);
1911
1912 {
1913#ifndef _WIN32
1914 sigset_t full, prev;
1915 sigfillset (&full);
1916 sigprocmask (SIG_SETMASK, &full, &prev);
1917#endif
1918
889 array_needsize (signals, signalmax, w->signum, signals_init); 1919 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1920
1921#ifndef _WIN32
1922 sigprocmask (SIG_SETMASK, &prev, 0);
1923#endif
1924 }
1925
1926 ev_start (EV_A_ (W)w, 1);
890 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1927 wlist_add (&signals [w->signum - 1].head, (WL)w);
891 1928
892 if (!w->next) 1929 if (!((WL)w)->next)
893 { 1930 {
1931#if _WIN32
1932 signal (w->signum, sighandler);
1933#else
894 struct sigaction sa; 1934 struct sigaction sa;
895 sa.sa_handler = sighandler; 1935 sa.sa_handler = sighandler;
896 sigfillset (&sa.sa_mask); 1936 sigfillset (&sa.sa_mask);
897 sa.sa_flags = 0; 1937 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
898 sigaction (w->signum, &sa, 0); 1938 sigaction (w->signum, &sa, 0);
1939#endif
899 } 1940 }
900} 1941}
901 1942
902void 1943void noinline
903ev_signal_stop (struct ev_signal *w) 1944ev_signal_stop (EV_P_ ev_signal *w)
904{ 1945{
905 ev_clear_pending ((W)w); 1946 clear_pending (EV_A_ (W)w);
906 if (!ev_is_active (w)) 1947 if (expect_false (!ev_is_active (w)))
907 return; 1948 return;
908 1949
909 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1950 wlist_del (&signals [w->signum - 1].head, (WL)w);
910 ev_stop ((W)w); 1951 ev_stop (EV_A_ (W)w);
911 1952
912 if (!signals [w->signum - 1].head) 1953 if (!signals [w->signum - 1].head)
913 signal (w->signum, SIG_DFL); 1954 signal (w->signum, SIG_DFL);
914} 1955}
915 1956
916void 1957void
917ev_idle_start (struct ev_idle *w) 1958ev_child_start (EV_P_ ev_child *w)
918{ 1959{
1960#if EV_MULTIPLICITY
1961 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1962#endif
919 if (ev_is_active (w)) 1963 if (expect_false (ev_is_active (w)))
920 return; 1964 return;
921 1965
922 ev_start ((W)w, ++idlecnt); 1966 ev_start (EV_A_ (W)w, 1);
923 array_needsize (idles, idlemax, idlecnt, ); 1967 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
924 idles [idlecnt - 1] = w;
925} 1968}
926 1969
927void 1970void
928ev_idle_stop (struct ev_idle *w) 1971ev_child_stop (EV_P_ ev_child *w)
929{ 1972{
930 ev_clear_pending ((W)w); 1973 clear_pending (EV_A_ (W)w);
931 if (ev_is_active (w)) 1974 if (expect_false (!ev_is_active (w)))
932 return; 1975 return;
933 1976
934 idles [w->active - 1] = idles [--idlecnt]; 1977 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
935 ev_stop ((W)w); 1978 ev_stop (EV_A_ (W)w);
936} 1979}
937 1980
1981#if EV_STAT_ENABLE
1982
1983# ifdef _WIN32
1984# undef lstat
1985# define lstat(a,b) _stati64 (a,b)
1986# endif
1987
1988#define DEF_STAT_INTERVAL 5.0074891
1989#define MIN_STAT_INTERVAL 0.1074891
1990
1991static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1992
1993#if EV_USE_INOTIFY
1994# define EV_INOTIFY_BUFSIZE 8192
1995
1996static void noinline
1997infy_add (EV_P_ ev_stat *w)
1998{
1999 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);
2000
2001 if (w->wd < 0)
2002 {
2003 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2004
2005 /* monitor some parent directory for speedup hints */
2006 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2007 {
2008 char path [4096];
2009 strcpy (path, w->path);
2010
2011 do
2012 {
2013 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2014 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2015
2016 char *pend = strrchr (path, '/');
2017
2018 if (!pend)
2019 break; /* whoops, no '/', complain to your admin */
2020
2021 *pend = 0;
2022 w->wd = inotify_add_watch (fs_fd, path, mask);
2023 }
2024 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2025 }
2026 }
2027 else
2028 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2029
2030 if (w->wd >= 0)
2031 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2032}
2033
2034static void noinline
2035infy_del (EV_P_ ev_stat *w)
2036{
2037 int slot;
2038 int wd = w->wd;
2039
2040 if (wd < 0)
2041 return;
2042
2043 w->wd = -2;
2044 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2045 wlist_del (&fs_hash [slot].head, (WL)w);
2046
2047 /* remove this watcher, if others are watching it, they will rearm */
2048 inotify_rm_watch (fs_fd, wd);
2049}
2050
2051static void noinline
2052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2053{
2054 if (slot < 0)
2055 /* overflow, need to check for all hahs slots */
2056 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2057 infy_wd (EV_A_ slot, wd, ev);
2058 else
2059 {
2060 WL w_;
2061
2062 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us remove this watcher and all before it */
2066
2067 if (w->wd == wd || wd == -1)
2068 {
2069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2070 {
2071 w->wd = -1;
2072 infy_add (EV_A_ w); /* re-add, no matter what */
2073 }
2074
2075 stat_timer_cb (EV_A_ &w->timer, 0);
2076 }
2077 }
2078 }
2079}
2080
2081static void
2082infy_cb (EV_P_ ev_io *w, int revents)
2083{
2084 char buf [EV_INOTIFY_BUFSIZE];
2085 struct inotify_event *ev = (struct inotify_event *)buf;
2086 int ofs;
2087 int len = read (fs_fd, buf, sizeof (buf));
2088
2089 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2090 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2091}
2092
2093void inline_size
2094infy_init (EV_P)
2095{
2096 if (fs_fd != -2)
2097 return;
2098
2099 fs_fd = inotify_init ();
2100
2101 if (fs_fd >= 0)
2102 {
2103 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2104 ev_set_priority (&fs_w, EV_MAXPRI);
2105 ev_io_start (EV_A_ &fs_w);
2106 }
2107}
2108
2109void inline_size
2110infy_fork (EV_P)
2111{
2112 int slot;
2113
2114 if (fs_fd < 0)
2115 return;
2116
2117 close (fs_fd);
2118 fs_fd = inotify_init ();
2119
2120 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2121 {
2122 WL w_ = fs_hash [slot].head;
2123 fs_hash [slot].head = 0;
2124
2125 while (w_)
2126 {
2127 ev_stat *w = (ev_stat *)w_;
2128 w_ = w_->next; /* lets us add this watcher */
2129
2130 w->wd = -1;
2131
2132 if (fs_fd >= 0)
2133 infy_add (EV_A_ w); /* re-add, no matter what */
2134 else
2135 ev_timer_start (EV_A_ &w->timer);
2136 }
2137
2138 }
2139}
2140
2141#endif
2142
938void 2143void
2144ev_stat_stat (EV_P_ ev_stat *w)
2145{
2146 if (lstat (w->path, &w->attr) < 0)
2147 w->attr.st_nlink = 0;
2148 else if (!w->attr.st_nlink)
2149 w->attr.st_nlink = 1;
2150}
2151
2152static void noinline
2153stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2154{
2155 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2156
2157 /* we copy this here each the time so that */
2158 /* prev has the old value when the callback gets invoked */
2159 w->prev = w->attr;
2160 ev_stat_stat (EV_A_ w);
2161
2162 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2163 if (
2164 w->prev.st_dev != w->attr.st_dev
2165 || w->prev.st_ino != w->attr.st_ino
2166 || w->prev.st_mode != w->attr.st_mode
2167 || w->prev.st_nlink != w->attr.st_nlink
2168 || w->prev.st_uid != w->attr.st_uid
2169 || w->prev.st_gid != w->attr.st_gid
2170 || w->prev.st_rdev != w->attr.st_rdev
2171 || w->prev.st_size != w->attr.st_size
2172 || w->prev.st_atime != w->attr.st_atime
2173 || w->prev.st_mtime != w->attr.st_mtime
2174 || w->prev.st_ctime != w->attr.st_ctime
2175 ) {
2176 #if EV_USE_INOTIFY
2177 infy_del (EV_A_ w);
2178 infy_add (EV_A_ w);
2179 ev_stat_stat (EV_A_ w); /* avoid race... */
2180 #endif
2181
2182 ev_feed_event (EV_A_ w, EV_STAT);
2183 }
2184}
2185
2186void
2187ev_stat_start (EV_P_ ev_stat *w)
2188{
2189 if (expect_false (ev_is_active (w)))
2190 return;
2191
2192 /* since we use memcmp, we need to clear any padding data etc. */
2193 memset (&w->prev, 0, sizeof (ev_statdata));
2194 memset (&w->attr, 0, sizeof (ev_statdata));
2195
2196 ev_stat_stat (EV_A_ w);
2197
2198 if (w->interval < MIN_STAT_INTERVAL)
2199 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2200
2201 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2202 ev_set_priority (&w->timer, ev_priority (w));
2203
2204#if EV_USE_INOTIFY
2205 infy_init (EV_A);
2206
2207 if (fs_fd >= 0)
2208 infy_add (EV_A_ w);
2209 else
2210#endif
2211 ev_timer_start (EV_A_ &w->timer);
2212
2213 ev_start (EV_A_ (W)w, 1);
2214}
2215
2216void
2217ev_stat_stop (EV_P_ ev_stat *w)
2218{
2219 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w)))
2221 return;
2222
2223#if EV_USE_INOTIFY
2224 infy_del (EV_A_ w);
2225#endif
2226 ev_timer_stop (EV_A_ &w->timer);
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
2232#if EV_IDLE_ENABLE
2233void
2234ev_idle_start (EV_P_ ev_idle *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 pri_adjust (EV_A_ (W)w);
2240
2241 {
2242 int active = ++idlecnt [ABSPRI (w)];
2243
2244 ++idleall;
2245 ev_start (EV_A_ (W)w, active);
2246
2247 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2248 idles [ABSPRI (w)][active - 1] = w;
2249 }
2250}
2251
2252void
2253ev_idle_stop (EV_P_ ev_idle *w)
2254{
2255 clear_pending (EV_A_ (W)w);
2256 if (expect_false (!ev_is_active (w)))
2257 return;
2258
2259 {
2260 int active = ((W)w)->active;
2261
2262 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2263 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2264
2265 ev_stop (EV_A_ (W)w);
2266 --idleall;
2267 }
2268}
2269#endif
2270
2271void
939ev_prepare_start (struct ev_prepare *w) 2272ev_prepare_start (EV_P_ ev_prepare *w)
940{ 2273{
941 if (ev_is_active (w)) 2274 if (expect_false (ev_is_active (w)))
942 return; 2275 return;
943 2276
944 ev_start ((W)w, ++preparecnt); 2277 ev_start (EV_A_ (W)w, ++preparecnt);
945 array_needsize (prepares, preparemax, preparecnt, ); 2278 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
946 prepares [preparecnt - 1] = w; 2279 prepares [preparecnt - 1] = w;
947} 2280}
948 2281
949void 2282void
950ev_prepare_stop (struct ev_prepare *w) 2283ev_prepare_stop (EV_P_ ev_prepare *w)
951{ 2284{
952 ev_clear_pending ((W)w); 2285 clear_pending (EV_A_ (W)w);
953 if (ev_is_active (w)) 2286 if (expect_false (!ev_is_active (w)))
954 return; 2287 return;
955 2288
2289 {
2290 int active = ((W)w)->active;
956 prepares [w->active - 1] = prepares [--preparecnt]; 2291 prepares [active - 1] = prepares [--preparecnt];
2292 ((W)prepares [active - 1])->active = active;
2293 }
2294
957 ev_stop ((W)w); 2295 ev_stop (EV_A_ (W)w);
958} 2296}
959 2297
960void 2298void
961ev_check_start (struct ev_check *w) 2299ev_check_start (EV_P_ ev_check *w)
962{ 2300{
963 if (ev_is_active (w)) 2301 if (expect_false (ev_is_active (w)))
964 return; 2302 return;
965 2303
966 ev_start ((W)w, ++checkcnt); 2304 ev_start (EV_A_ (W)w, ++checkcnt);
967 array_needsize (checks, checkmax, checkcnt, ); 2305 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
968 checks [checkcnt - 1] = w; 2306 checks [checkcnt - 1] = w;
969} 2307}
970 2308
971void 2309void
972ev_check_stop (struct ev_check *w) 2310ev_check_stop (EV_P_ ev_check *w)
973{ 2311{
974 ev_clear_pending ((W)w); 2312 clear_pending (EV_A_ (W)w);
975 if (ev_is_active (w)) 2313 if (expect_false (!ev_is_active (w)))
976 return; 2314 return;
977 2315
2316 {
2317 int active = ((W)w)->active;
978 checks [w->active - 1] = checks [--checkcnt]; 2318 checks [active - 1] = checks [--checkcnt];
2319 ((W)checks [active - 1])->active = active;
2320 }
2321
979 ev_stop ((W)w); 2322 ev_stop (EV_A_ (W)w);
980} 2323}
981 2324
982void 2325#if EV_EMBED_ENABLE
983ev_child_start (struct ev_child *w) 2326void noinline
2327ev_embed_sweep (EV_P_ ev_embed *w)
984{ 2328{
2329 ev_loop (w->other, EVLOOP_NONBLOCK);
2330}
2331
2332static void
2333embed_io_cb (EV_P_ ev_io *io, int revents)
2334{
2335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2336
985 if (ev_is_active (w)) 2337 if (ev_cb (w))
986 return; 2338 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2339 else
2340 ev_loop (w->other, EVLOOP_NONBLOCK);
2341}
987 2342
2343static void
2344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2345{
2346 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2347
2348 {
2349 struct ev_loop *loop = w->other;
2350
2351 while (fdchangecnt)
2352 {
2353 fd_reify (EV_A);
2354 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2355 }
2356 }
2357}
2358
2359#if 0
2360static void
2361embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2362{
2363 ev_idle_stop (EV_A_ idle);
2364}
2365#endif
2366
2367void
2368ev_embed_start (EV_P_ ev_embed *w)
2369{
2370 if (expect_false (ev_is_active (w)))
2371 return;
2372
2373 {
2374 struct ev_loop *loop = w->other;
2375 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2376 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2377 }
2378
2379 ev_set_priority (&w->io, ev_priority (w));
2380 ev_io_start (EV_A_ &w->io);
2381
2382 ev_prepare_init (&w->prepare, embed_prepare_cb);
2383 ev_set_priority (&w->prepare, EV_MINPRI);
2384 ev_prepare_start (EV_A_ &w->prepare);
2385
2386 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2387
988 ev_start ((W)w, 1); 2388 ev_start (EV_A_ (W)w, 1);
989 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990} 2389}
991 2390
992void 2391void
993ev_child_stop (struct ev_child *w) 2392ev_embed_stop (EV_P_ ev_embed *w)
994{ 2393{
995 ev_clear_pending ((W)w); 2394 clear_pending (EV_A_ (W)w);
996 if (ev_is_active (w)) 2395 if (expect_false (!ev_is_active (w)))
997 return; 2396 return;
998 2397
999 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2398 ev_io_stop (EV_A_ &w->io);
2399 ev_prepare_stop (EV_A_ &w->prepare);
2400
1000 ev_stop ((W)w); 2401 ev_stop (EV_A_ (W)w);
1001} 2402}
2403#endif
2404
2405#if EV_FORK_ENABLE
2406void
2407ev_fork_start (EV_P_ ev_fork *w)
2408{
2409 if (expect_false (ev_is_active (w)))
2410 return;
2411
2412 ev_start (EV_A_ (W)w, ++forkcnt);
2413 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2414 forks [forkcnt - 1] = w;
2415}
2416
2417void
2418ev_fork_stop (EV_P_ ev_fork *w)
2419{
2420 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w)))
2422 return;
2423
2424 {
2425 int active = ((W)w)->active;
2426 forks [active - 1] = forks [--forkcnt];
2427 ((W)forks [active - 1])->active = active;
2428 }
2429
2430 ev_stop (EV_A_ (W)w);
2431}
2432#endif
2433
2434#if EV_ASYNC_ENABLE
2435void
2436ev_async_start (EV_P_ ev_async *w)
2437{
2438 if (expect_false (ev_is_active (w)))
2439 return;
2440
2441 evpipe_init (EV_A);
2442
2443 ev_start (EV_A_ (W)w, ++asynccnt);
2444 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2445 asyncs [asynccnt - 1] = w;
2446}
2447
2448void
2449ev_async_stop (EV_P_ ev_async *w)
2450{
2451 clear_pending (EV_A_ (W)w);
2452 if (expect_false (!ev_is_active (w)))
2453 return;
2454
2455 {
2456 int active = ((W)w)->active;
2457 asyncs [active - 1] = asyncs [--asynccnt];
2458 ((W)asyncs [active - 1])->active = active;
2459 }
2460
2461 ev_stop (EV_A_ (W)w);
2462}
2463
2464void
2465ev_async_send (EV_P_ ev_async *w)
2466{
2467 w->sent = 1;
2468 evpipe_write (EV_A_ 0, 1);
2469}
2470#endif
1002 2471
1003/*****************************************************************************/ 2472/*****************************************************************************/
1004 2473
1005struct ev_once 2474struct ev_once
1006{ 2475{
1007 struct ev_io io; 2476 ev_io io;
1008 struct ev_timer to; 2477 ev_timer to;
1009 void (*cb)(int revents, void *arg); 2478 void (*cb)(int revents, void *arg);
1010 void *arg; 2479 void *arg;
1011}; 2480};
1012 2481
1013static void 2482static void
1014once_cb (struct ev_once *once, int revents) 2483once_cb (EV_P_ struct ev_once *once, int revents)
1015{ 2484{
1016 void (*cb)(int revents, void *arg) = once->cb; 2485 void (*cb)(int revents, void *arg) = once->cb;
1017 void *arg = once->arg; 2486 void *arg = once->arg;
1018 2487
1019 ev_io_stop (&once->io); 2488 ev_io_stop (EV_A_ &once->io);
1020 ev_timer_stop (&once->to); 2489 ev_timer_stop (EV_A_ &once->to);
1021 free (once); 2490 ev_free (once);
1022 2491
1023 cb (revents, arg); 2492 cb (revents, arg);
1024} 2493}
1025 2494
1026static void 2495static void
1027once_cb_io (struct ev_io *w, int revents) 2496once_cb_io (EV_P_ ev_io *w, int revents)
1028{ 2497{
1029 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2498 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1030} 2499}
1031 2500
1032static void 2501static void
1033once_cb_to (struct ev_timer *w, int revents) 2502once_cb_to (EV_P_ ev_timer *w, int revents)
1034{ 2503{
1035 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2504 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1036} 2505}
1037 2506
1038void 2507void
1039ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2508ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1040{ 2509{
1041 struct ev_once *once = malloc (sizeof (struct ev_once)); 2510 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1042 2511
1043 if (!once) 2512 if (expect_false (!once))
2513 {
1044 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2514 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1045 else 2515 return;
1046 { 2516 }
2517
1047 once->cb = cb; 2518 once->cb = cb;
1048 once->arg = arg; 2519 once->arg = arg;
1049 2520
1050 ev_watcher_init (&once->io, once_cb_io); 2521 ev_init (&once->io, once_cb_io);
1051 if (fd >= 0) 2522 if (fd >= 0)
1052 { 2523 {
1053 ev_io_set (&once->io, fd, events); 2524 ev_io_set (&once->io, fd, events);
1054 ev_io_start (&once->io); 2525 ev_io_start (EV_A_ &once->io);
1055 } 2526 }
1056 2527
1057 ev_watcher_init (&once->to, once_cb_to); 2528 ev_init (&once->to, once_cb_to);
1058 if (timeout >= 0.) 2529 if (timeout >= 0.)
1059 { 2530 {
1060 ev_timer_set (&once->to, timeout, 0.); 2531 ev_timer_set (&once->to, timeout, 0.);
1061 ev_timer_start (&once->to); 2532 ev_timer_start (EV_A_ &once->to);
1062 }
1063 }
1064}
1065
1066/*****************************************************************************/
1067
1068#if 0
1069
1070struct ev_io wio;
1071
1072static void
1073sin_cb (struct ev_io *w, int revents)
1074{
1075 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1076}
1077
1078static void
1079ocb (struct ev_timer *w, int revents)
1080{
1081 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1082 ev_timer_stop (w);
1083 ev_timer_start (w);
1084}
1085
1086static void
1087scb (struct ev_signal *w, int revents)
1088{
1089 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1090 ev_io_stop (&wio);
1091 ev_io_start (&wio);
1092}
1093
1094static void
1095gcb (struct ev_signal *w, int revents)
1096{
1097 fprintf (stderr, "generic %x\n", revents);
1098
1099}
1100
1101int main (void)
1102{
1103 ev_init (0);
1104
1105 ev_io_init (&wio, sin_cb, 0, EV_READ);
1106 ev_io_start (&wio);
1107
1108 struct ev_timer t[10000];
1109
1110#if 0
1111 int i;
1112 for (i = 0; i < 10000; ++i)
1113 { 2533 }
1114 struct ev_timer *w = t + i;
1115 ev_watcher_init (w, ocb, i);
1116 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1117 ev_timer_start (w);
1118 if (drand48 () < 0.5)
1119 ev_timer_stop (w);
1120 }
1121#endif
1122
1123 struct ev_timer t1;
1124 ev_timer_init (&t1, ocb, 5, 10);
1125 ev_timer_start (&t1);
1126
1127 struct ev_signal sig;
1128 ev_signal_init (&sig, scb, SIGQUIT);
1129 ev_signal_start (&sig);
1130
1131 struct ev_check cw;
1132 ev_check_init (&cw, gcb);
1133 ev_check_start (&cw);
1134
1135 struct ev_idle iw;
1136 ev_idle_init (&iw, gcb);
1137 ev_idle_start (&iw);
1138
1139 ev_loop (0);
1140
1141 return 0;
1142} 2534}
1143 2535
2536#if EV_MULTIPLICITY
2537 #include "ev_wrap.h"
1144#endif 2538#endif
1145 2539
2540#ifdef __cplusplus
2541}
2542#endif
1146 2543
1147
1148

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