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Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.217 by root, Sat Mar 22 13:42:45 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
3 * All rights reserved. 5 * All rights reserved.
4 * 6 *
5 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
6 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
7 * 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.
8 * 27 *
9 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
10 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
11 * 30 * in which case the provisions of the GPL are applicable instead of
12 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
13 * 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
14 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
15 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
16 * 35 * and other provisions required by the GPL. If you do not delete the
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
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
123#endif
29 124
30#include <math.h> 125#include <math.h>
31#include <stdlib.h> 126#include <stdlib.h>
32#include <unistd.h>
33#include <fcntl.h> 127#include <fcntl.h>
34#include <signal.h>
35#include <stddef.h> 128#include <stddef.h>
36 129
37#include <stdio.h> 130#include <stdio.h>
38 131
39#include <assert.h> 132#include <assert.h>
40#include <errno.h> 133#include <errno.h>
41#include <sys/types.h> 134#include <sys/types.h>
42#include <sys/wait.h>
43#include <sys/time.h>
44#include <time.h> 135#include <time.h>
45 136
46#ifndef HAVE_MONOTONIC 137#include <signal.h>
47# ifdef CLOCK_MONOTONIC 138
48# define HAVE_MONOTONIC 1 139#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
49# endif 154# endif
50#endif 155#endif
51 156
157/**/
158
159#ifndef EV_USE_MONOTONIC
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
169#endif
170
52#ifndef HAVE_SELECT 171#ifndef EV_USE_SELECT
53# define HAVE_SELECT 1 172# define EV_USE_SELECT 1
173#endif
174
175#ifndef EV_USE_POLL
176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
54#endif 180# endif
181#endif
55 182
56#ifndef HAVE_EPOLL 183#ifndef EV_USE_EPOLL
57# define HAVE_EPOLL 0 184# define EV_USE_EPOLL 0
185#endif
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
58#endif 204# endif
205#endif
59 206
60#ifndef HAVE_REALTIME 207#ifndef EV_INOTIFY_HASHSIZE
61# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ 208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
62#endif 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
222#ifndef CLOCK_REALTIME
223# undef EV_USE_REALTIME
224# define EV_USE_REALTIME 0
225#endif
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
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 */
63 257
64#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) */
65#define MAX_BLOCKTIME 60. 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
66#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
67 261
68#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
69 272
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
70typedef struct ev_watcher *W; 289typedef ev_watcher *W;
71typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
72typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
73 292
74static 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
75ev_tstamp ev_now; 395 ev_tstamp ev_rt_now;
76int ev_method; 396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
77 399
78static int have_monotonic; /* runtime */ 400 static int ev_default_loop_ptr;
79 401
80static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 402#endif
81static void (*method_modify)(int fd, int oev, int nev);
82static void (*method_poll)(ev_tstamp timeout);
83 403
84/*****************************************************************************/ 404/*****************************************************************************/
85 405
86ev_tstamp 406ev_tstamp
87ev_time (void) 407ev_time (void)
88{ 408{
89#if HAVE_REALTIME 409#if EV_USE_REALTIME
90 struct timespec ts; 410 struct timespec ts;
91 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
92 return ts.tv_sec + ts.tv_nsec * 1e-9; 412 return ts.tv_sec + ts.tv_nsec * 1e-9;
93#else 413#else
94 struct timeval tv; 414 struct timeval tv;
95 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
96 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
97#endif 417#endif
98} 418}
99 419
100static ev_tstamp 420ev_tstamp inline_size
101get_clock (void) 421get_clock (void)
102{ 422{
103#if HAVE_MONOTONIC 423#if EV_USE_MONOTONIC
104 if (have_monotonic) 424 if (expect_true (have_monotonic))
105 { 425 {
106 struct timespec ts; 426 struct timespec ts;
107 clock_gettime (CLOCK_MONOTONIC, &ts); 427 clock_gettime (CLOCK_MONOTONIC, &ts);
108 return ts.tv_sec + ts.tv_nsec * 1e-9; 428 return ts.tv_sec + ts.tv_nsec * 1e-9;
109 } 429 }
110#endif 430#endif
111 431
112 return ev_time (); 432 return ev_time ();
113} 433}
114 434
115#define array_needsize(base,cur,cnt,init) \ 435#if EV_MULTIPLICITY
116 if ((cnt) > cur) \ 436ev_tstamp
117 { \ 437ev_now (EV_P)
118 int newcnt = cur; \ 438{
119 do \ 439 return ev_rt_now;
120 { \ 440}
121 newcnt = (newcnt << 1) | 4 & ~3; \ 441#endif
122 } \ 442
123 while ((cnt) > newcnt); \ 443void
124 \ 444ev_sleep (ev_tstamp delay)
125 base = realloc (base, sizeof (*base) * (newcnt)); \ 445{
126 init (base + cur, newcnt - cur); \ 446 if (delay > 0.)
127 cur = newcnt; \
128 } 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 ((unsigned long)(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}
129 467
130/*****************************************************************************/ 468/*****************************************************************************/
131 469
132typedef struct 470int inline_size
471array_nextsize (int elem, int cur, int cnt)
133{ 472{
134 struct ev_io *head; 473 int ncur = cur + 1;
135 int events;
136} ANFD;
137 474
138static ANFD *anfds; 475 do
139static int anfdmax; 476 ncur <<= 1;
477 while (cnt > ncur);
140 478
141static 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
142anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
143{ 552{
144 while (count--) 553 while (count--)
145 { 554 {
146 base->head = 0; 555 base->head = 0;
147 base->events = EV_NONE; 556 base->events = EV_NONE;
557 base->reify = 0;
558
148 ++base; 559 ++base;
149 } 560 }
150} 561}
151 562
152typedef struct 563void inline_speed
153{
154 W w;
155 int events;
156} ANPENDING;
157
158static ANPENDING *pendings;
159static int pendingmax, pendingcnt;
160
161static void
162event (W w, int events)
163{
164 if (w->active)
165 {
166 w->pending = ++pendingcnt;
167 array_needsize (pendings, pendingmax, pendingcnt, );
168 pendings [pendingcnt - 1].w = w;
169 pendings [pendingcnt - 1].events = events;
170 }
171}
172
173static void
174queue_events (W *events, int eventcnt, int type)
175{
176 int i;
177
178 for (i = 0; i < eventcnt; ++i)
179 event (events [i], type);
180}
181
182static void
183fd_event (int fd, int events) 564fd_event (EV_P_ int fd, int revents)
184{ 565{
185 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
186 struct ev_io *w; 567 ev_io *w;
187 568
188 for (w = anfd->head; w; w = w->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
189 { 570 {
190 int ev = w->events & events; 571 int ev = w->events & revents;
191 572
192 if (ev) 573 if (ev)
193 event ((W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
194 } 575 }
195} 576}
196 577
197/*****************************************************************************/ 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}
198 584
199static int *fdchanges; 585void inline_size
200static int fdchangemax, fdchangecnt; 586fd_reify (EV_P)
201
202static void
203fd_reify (void)
204{ 587{
205 int i; 588 int i;
206 589
207 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
208 { 591 {
209 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
210 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
211 struct ev_io *w; 594 ev_io *w;
212 595
213 int events = 0; 596 unsigned char events = 0;
214 597
215 for (w = anfd->head; w; w = w->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
216 events |= w->events; 599 events |= (unsigned char)w->events;
217 600
218 anfd->events &= ~EV_REIFY; 601#if EV_SELECT_IS_WINSOCKET
219 602 if (events)
220 if (anfd->events != events)
221 { 603 {
222 method_modify (fd, anfd->events, events); 604 unsigned long argp;
223 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));
224 } 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 }
225 } 624 }
226 625
227 fdchangecnt = 0; 626 fdchangecnt = 0;
228} 627}
229 628
230static void 629void inline_size
231fd_change (int fd) 630fd_change (EV_P_ int fd, int flags)
232{ 631{
233 if (anfds [fd].events & EV_REIFY) 632 unsigned char reify = anfds [fd].reify;
234 return; 633 anfds [fd].reify |= flags;
235 634
236 anfds [fd].events |= EV_REIFY; 635 if (expect_true (!reify))
237 636 {
238 ++fdchangecnt; 637 ++fdchangecnt;
239 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
240 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
241} 663}
242 664
243/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
244static void 666static void noinline
245fd_recheck (void) 667fd_ebadf (EV_P)
246{ 668{
247 int fd; 669 int fd;
248 670
249 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
250 if (anfds [fd].events) 672 if (anfds [fd].events)
251 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
252 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)
253 { 685 {
254 event ((W)anfds [fd].head, EV_ERROR); 686 fd_kill (EV_A_ fd);
255 ev_io_stop (anfds [fd].head); 687 return;
256 } 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 }
257} 703}
258 704
259/*****************************************************************************/ 705/*****************************************************************************/
260 706
261static struct ev_timer **timers; 707void inline_speed
262static int timermax, timercnt;
263
264static struct ev_periodic **periodics;
265static int periodicmax, periodiccnt;
266
267static void
268upheap (WT *timers, int k) 708upheap (WT *heap, int k)
269{ 709{
270 WT w = timers [k]; 710 WT w = heap [k];
271 711
272 while (k && timers [k >> 1]->at > w->at) 712 while (k)
273 {
274 timers [k] = timers [k >> 1];
275 timers [k]->active = k + 1;
276 k >>= 1;
277 } 713 {
278
279 timers [k] = w;
280 timers [k]->active = k + 1;
281
282}
283
284static void
285downheap (WT *timers, int N, int k)
286{
287 WT w = timers [k];
288
289 while (k < (N >> 1))
290 {
291 int j = k << 1; 714 int p = (k - 1) >> 1;
292 715
293 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 716 if (heap [p]->at <= w->at)
294 ++j;
295
296 if (w->at <= timers [j]->at)
297 break; 717 break;
298 718
299 timers [k] = timers [j]; 719 heap [k] = heap [p];
300 timers [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
301 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 (;;)
302 } 734 {
735 int c = (k << 1) + 1;
303 736
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
304 timers [k] = w; 752 heap [k] = w;
305 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);
306} 761}
307 762
308/*****************************************************************************/ 763/*****************************************************************************/
309 764
310typedef struct 765typedef struct
311{ 766{
312 struct ev_signal *head; 767 WL head;
313 sig_atomic_t gotsig; 768 EV_ATOMIC_T gotsig;
314} ANSIG; 769} ANSIG;
315 770
316static ANSIG *signals; 771static ANSIG *signals;
317static int signalmax; 772static int signalmax;
318 773
319static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
320static sig_atomic_t gotsig;
321static struct ev_io sigev;
322 775
323static void 776void inline_size
324signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
325{ 778{
326 while (count--) 779 while (count--)
327 { 780 {
328 base->head = 0; 781 base->head = 0;
329 base->gotsig = 0; 782 base->gotsig = 0;
783
330 ++base; 784 ++base;
331 } 785 }
332} 786}
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); /* watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821{
822 if (!*flag)
823 {
824 int old_errno = errno; /* save errno because write might clobber it */
825
826 *flag = 1;
827 write (evpipe [1], &old_errno, 1);
828
829 errno = old_errno;
830 }
831}
832
833static void
834pipecb (EV_P_ ev_io *iow, int revents)
835{
836 {
837 int dummy;
838 read (evpipe [0], &dummy, 1);
839 }
840
841 if (gotsig && ev_is_default_loop (EV_A))
842 {
843 int signum;
844 gotsig = 0;
845
846 for (signum = signalmax; signum--; )
847 if (signals [signum].gotsig)
848 ev_feed_signal_event (EV_A_ signum + 1);
849 }
850
851#if EV_ASYNC_ENABLE
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864#endif
865}
866
867/*****************************************************************************/
333 868
334static void 869static void
335sighandler (int signum) 870sighandler (int signum)
336{ 871{
872#if EV_MULTIPLICITY
873 struct ev_loop *loop = &default_loop_struct;
874#endif
875
876#if _WIN32
877 signal (signum, sighandler);
878#endif
879
337 signals [signum - 1].gotsig = 1; 880 signals [signum - 1].gotsig = 1;
338 881 evpipe_write (EV_A_ &gotsig);
339 if (!gotsig)
340 {
341 gotsig = 1;
342 write (sigpipe [1], &gotsig, 1);
343 }
344} 882}
345 883
346static void 884void noinline
347sigcb (struct ev_io *iow, int revents) 885ev_feed_signal_event (EV_P_ int signum)
348{ 886{
349 struct ev_signal *w; 887 WL w;
350 int sig;
351 888
352 gotsig = 0; 889#if EV_MULTIPLICITY
353 read (sigpipe [0], &revents, 1); 890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
354 892
355 for (sig = signalmax; sig--; ) 893 --signum;
356 if (signals [sig].gotsig) 894
357 { 895 if (signum < 0 || signum >= signalmax)
896 return;
897
358 signals [sig].gotsig = 0; 898 signals [signum].gotsig = 0;
359 899
360 for (w = signals [sig].head; w; w = w->next) 900 for (w = signals [signum].head; w; w = w->next)
361 event ((W)w, EV_SIGNAL); 901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
362 }
363}
364
365static void
366siginit (void)
367{
368 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
369 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370
371 /* rather than sort out wether we really need nb, set it */
372 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
373 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
374
375 ev_io_set (&sigev, sigpipe [0], EV_READ);
376 ev_io_start (&sigev);
377} 902}
378 903
379/*****************************************************************************/ 904/*****************************************************************************/
380 905
381static struct ev_idle **idles; 906static WL childs [EV_PID_HASHSIZE];
382static int idlemax, idlecnt;
383 907
384static struct ev_prepare **prepares; 908#ifndef _WIN32
385static int preparemax, preparecnt;
386 909
387static struct ev_check **checks;
388static int checkmax, checkcnt;
389
390/*****************************************************************************/
391
392static struct ev_child *childs [PID_HASHSIZE];
393static struct ev_signal childev; 910static ev_signal childev;
911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
916void inline_speed
917child_reap (EV_P_ int chain, int pid, int status)
918{
919 ev_child *w;
920 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921
922 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
923 {
924 if ((w->pid == pid || !w->pid)
925 && (!traced || (w->flags & 1)))
926 {
927 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
928 w->rpid = pid;
929 w->rstatus = status;
930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
931 }
932 }
933}
394 934
395#ifndef WCONTINUED 935#ifndef WCONTINUED
396# define WCONTINUED 0 936# define WCONTINUED 0
397#endif 937#endif
398 938
399static void 939static void
400childcb (struct ev_signal *sw, int revents) 940childcb (EV_P_ ev_signal *sw, int revents)
401{ 941{
402 struct ev_child *w;
403 int pid, status; 942 int pid, status;
404 943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
405 while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) 945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
406 for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) 946 if (!WCONTINUED
407 if (w->pid == pid || w->pid == -1) 947 || errno != EINVAL
408 { 948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
409 w->status = status; 949 return;
410 event ((W)w, EV_CHILD); 950
411 } 951 /* make sure we are called again until all children have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */
953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
954
955 child_reap (EV_A_ pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
412} 958}
959
960#endif
413 961
414/*****************************************************************************/ 962/*****************************************************************************/
415 963
964#if EV_USE_PORT
965# include "ev_port.c"
966#endif
967#if EV_USE_KQUEUE
968# include "ev_kqueue.c"
969#endif
416#if HAVE_EPOLL 970#if EV_USE_EPOLL
417# include "ev_epoll.c" 971# include "ev_epoll.c"
418#endif 972#endif
973#if EV_USE_POLL
974# include "ev_poll.c"
975#endif
419#if HAVE_SELECT 976#if EV_USE_SELECT
420# include "ev_select.c" 977# include "ev_select.c"
421#endif 978#endif
422 979
423int 980int
424ev_version_major (void) 981ev_version_major (void)
… …
430ev_version_minor (void) 987ev_version_minor (void)
431{ 988{
432 return EV_VERSION_MINOR; 989 return EV_VERSION_MINOR;
433} 990}
434 991
435int ev_init (int flags) 992/* return true if we are running with elevated privileges and should ignore env variables */
993int inline_size
994enable_secure (void)
436{ 995{
437 if (!ev_method) 996#ifdef _WIN32
997 return 0;
998#else
999 return getuid () != geteuid ()
1000 || getgid () != getegid ();
1001#endif
1002}
1003
1004unsigned int
1005ev_supported_backends (void)
1006{
1007 unsigned int flags = 0;
1008
1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1010 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1011 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1012 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1013 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014
1015 return flags;
1016}
1017
1018unsigned int
1019ev_recommended_backends (void)
1020{
1021 unsigned int flags = ev_supported_backends ();
1022
1023#ifndef __NetBSD__
1024 /* kqueue is borked on everything but netbsd apparently */
1025 /* it usually doesn't work correctly on anything but sockets and pipes */
1026 flags &= ~EVBACKEND_KQUEUE;
1027#endif
1028#ifdef __APPLE__
1029 // flags &= ~EVBACKEND_KQUEUE; for documentation
1030 flags &= ~EVBACKEND_POLL;
1031#endif
1032
1033 return flags;
1034}
1035
1036unsigned int
1037ev_embeddable_backends (void)
1038{
1039 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040
1041 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042 /* please fix it and tell me how to detect the fix */
1043 flags &= ~EVBACKEND_EPOLL;
1044
1045 return flags;
1046}
1047
1048unsigned int
1049ev_backend (EV_P)
1050{
1051 return backend;
1052}
1053
1054unsigned int
1055ev_loop_count (EV_P)
1056{
1057 return loop_count;
1058}
1059
1060void
1061ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1062{
1063 io_blocktime = interval;
1064}
1065
1066void
1067ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1068{
1069 timeout_blocktime = interval;
1070}
1071
1072static void noinline
1073loop_init (EV_P_ unsigned int flags)
1074{
1075 if (!backend)
438 { 1076 {
439#if HAVE_MONOTONIC 1077#if EV_USE_MONOTONIC
440 { 1078 {
441 struct timespec ts; 1079 struct timespec ts;
442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443 have_monotonic = 1; 1081 have_monotonic = 1;
444 } 1082 }
445#endif 1083#endif
446 1084
447 ev_now = ev_time (); 1085 ev_rt_now = ev_time ();
448 now = get_clock (); 1086 mn_now = get_clock ();
1087 now_floor = mn_now;
449 diff = ev_now - now; 1088 rtmn_diff = ev_rt_now - mn_now;
450 1089
451 if (pipe (sigpipe)) 1090 io_blocktime = 0.;
452 return 0; 1091 timeout_blocktime = 0.;
1092 backend = 0;
1093 backend_fd = -1;
1094 gotasync = 0;
1095#if EV_USE_INOTIFY
1096 fs_fd = -2;
1097#endif
453 1098
454 ev_method = EVMETHOD_NONE; 1099 /* pid check not overridable via env */
1100#ifndef _WIN32
1101 if (flags & EVFLAG_FORKCHECK)
1102 curpid = getpid ();
1103#endif
1104
1105 if (!(flags & EVFLAG_NOENV)
1106 && !enable_secure ()
1107 && getenv ("LIBEV_FLAGS"))
1108 flags = atoi (getenv ("LIBEV_FLAGS"));
1109
1110 if (!(flags & 0x0000ffffUL))
1111 flags |= ev_recommended_backends ();
1112
1113#if EV_USE_PORT
1114 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1115#endif
1116#if EV_USE_KQUEUE
1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
1118#endif
455#if HAVE_EPOLL 1119#if EV_USE_EPOLL
456 if (ev_method == EVMETHOD_NONE) epoll_init (flags); 1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
457#endif 1121#endif
1122#if EV_USE_POLL
1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1124#endif
458#if HAVE_SELECT 1125#if EV_USE_SELECT
459 if (ev_method == EVMETHOD_NONE) select_init (flags); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
460#endif 1127#endif
461 1128
462 if (ev_method) 1129 ev_init (&pipeev, pipecb);
1130 ev_set_priority (&pipeev, EV_MAXPRI);
1131 }
1132}
1133
1134static void noinline
1135loop_destroy (EV_P)
1136{
1137 int i;
1138
1139 if (ev_is_active (&pipeev))
1140 {
1141 ev_ref (EV_A); /* signal watcher */
1142 ev_io_stop (EV_A_ &pipeev);
1143
1144 close (evpipe [0]); evpipe [0] = 0;
1145 close (evpipe [1]); evpipe [1] = 0;
1146 }
1147
1148#if EV_USE_INOTIFY
1149 if (fs_fd >= 0)
1150 close (fs_fd);
1151#endif
1152
1153 if (backend_fd >= 0)
1154 close (backend_fd);
1155
1156#if EV_USE_PORT
1157 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1158#endif
1159#if EV_USE_KQUEUE
1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1161#endif
1162#if EV_USE_EPOLL
1163 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1164#endif
1165#if EV_USE_POLL
1166 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1167#endif
1168#if EV_USE_SELECT
1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1170#endif
1171
1172 for (i = NUMPRI; i--; )
1173 {
1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
1179
1180 ev_free (anfds); anfdmax = 0;
1181
1182 /* have to use the microsoft-never-gets-it-right macro */
1183 array_free (fdchange, EMPTY);
1184 array_free (timer, EMPTY);
1185#if EV_PERIODIC_ENABLE
1186 array_free (periodic, EMPTY);
1187#endif
1188#if EV_FORK_ENABLE
1189 array_free (fork, EMPTY);
1190#endif
1191 array_free (prepare, EMPTY);
1192 array_free (check, EMPTY);
1193#if EV_ASYNC_ENABLE
1194 array_free (async, EMPTY);
1195#endif
1196
1197 backend = 0;
1198}
1199
1200void inline_size infy_fork (EV_P);
1201
1202void inline_size
1203loop_fork (EV_P)
1204{
1205#if EV_USE_PORT
1206 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1207#endif
1208#if EV_USE_KQUEUE
1209 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1210#endif
1211#if EV_USE_EPOLL
1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1213#endif
1214#if EV_USE_INOTIFY
1215 infy_fork (EV_A);
1216#endif
1217
1218 if (ev_is_active (&pipeev))
1219 {
1220 /* this "locks" the handlers against writing to the pipe */
1221 /* while we modify the fd vars */
1222 gotsig = 1;
1223#if EV_ASYNC_ENABLE
1224 gotasync = 1;
1225#endif
1226
1227 ev_ref (EV_A);
1228 ev_io_stop (EV_A_ &pipeev);
1229 close (evpipe [0]);
1230 close (evpipe [1]);
1231
1232 evpipe_init (EV_A);
1233 /* now iterate over everything, in case we missed something */
1234 pipecb (EV_A_ &pipeev, EV_READ);
1235 }
1236
1237 postfork = 0;
1238}
1239
1240#if EV_MULTIPLICITY
1241struct ev_loop *
1242ev_loop_new (unsigned int flags)
1243{
1244 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1245
1246 memset (loop, 0, sizeof (struct ev_loop));
1247
1248 loop_init (EV_A_ flags);
1249
1250 if (ev_backend (EV_A))
1251 return loop;
1252
1253 return 0;
1254}
1255
1256void
1257ev_loop_destroy (EV_P)
1258{
1259 loop_destroy (EV_A);
1260 ev_free (loop);
1261}
1262
1263void
1264ev_loop_fork (EV_P)
1265{
1266 postfork = 1; /* must be in line with ev_default_fork */
1267}
1268
1269#endif
1270
1271#if EV_MULTIPLICITY
1272struct ev_loop *
1273ev_default_loop_init (unsigned int flags)
1274#else
1275int
1276ev_default_loop (unsigned int flags)
1277#endif
1278{
1279 if (!ev_default_loop_ptr)
1280 {
1281#if EV_MULTIPLICITY
1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1283#else
1284 ev_default_loop_ptr = 1;
1285#endif
1286
1287 loop_init (EV_A_ flags);
1288
1289 if (ev_backend (EV_A))
463 { 1290 {
464 ev_watcher_init (&sigev, sigcb); 1291#ifndef _WIN32
465 siginit ();
466
467 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
1293 ev_set_priority (&childev, EV_MAXPRI);
468 ev_signal_start (&childev); 1294 ev_signal_start (EV_A_ &childev);
1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
1296#endif
469 } 1297 }
1298 else
1299 ev_default_loop_ptr = 0;
470 } 1300 }
471 1301
472 return ev_method; 1302 return ev_default_loop_ptr;
1303}
1304
1305void
1306ev_default_destroy (void)
1307{
1308#if EV_MULTIPLICITY
1309 struct ev_loop *loop = ev_default_loop_ptr;
1310#endif
1311
1312#ifndef _WIN32
1313 ev_ref (EV_A); /* child watcher */
1314 ev_signal_stop (EV_A_ &childev);
1315#endif
1316
1317 loop_destroy (EV_A);
1318}
1319
1320void
1321ev_default_fork (void)
1322{
1323#if EV_MULTIPLICITY
1324 struct ev_loop *loop = ev_default_loop_ptr;
1325#endif
1326
1327 if (backend)
1328 postfork = 1; /* must be in line with ev_loop_fork */
473} 1329}
474 1330
475/*****************************************************************************/ 1331/*****************************************************************************/
476 1332
477void 1333void
478ev_prefork (void) 1334ev_invoke (EV_P_ void *w, int revents)
479{ 1335{
480 /* nop */ 1336 EV_CB_INVOKE ((W)w, revents);
481} 1337}
482 1338
483void 1339void inline_speed
484ev_postfork_parent (void)
485{
486 /* nop */
487}
488
489void
490ev_postfork_child (void)
491{
492#if HAVE_EPOLL
493 if (ev_method == EVMETHOD_EPOLL)
494 epoll_postfork_child ();
495#endif
496
497 ev_io_stop (&sigev);
498 close (sigpipe [0]);
499 close (sigpipe [1]);
500 pipe (sigpipe);
501 siginit ();
502}
503
504/*****************************************************************************/
505
506static void
507call_pending (void) 1340call_pending (EV_P)
508{ 1341{
1342 int pri;
1343
1344 for (pri = NUMPRI; pri--; )
509 while (pendingcnt) 1345 while (pendingcnt [pri])
510 { 1346 {
511 ANPENDING *p = pendings + --pendingcnt; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512 1348
513 if (p->w) 1349 if (expect_true (p->w))
514 { 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
515 p->w->pending = 0; 1353 p->w->pending = 0;
516 p->w->cb (p->w, p->events); 1354 EV_CB_INVOKE (p->w, p->events);
517 } 1355 }
518 } 1356 }
519} 1357}
520 1358
521static void 1359void inline_size
522timers_reify (void) 1360timers_reify (EV_P)
523{ 1361{
524 while (timercnt && timers [0]->at <= now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
525 { 1363 {
526 struct ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
527 1365
528 event ((W)w, EV_TIMEOUT); 1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
529 1367
530 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
531 if (w->repeat) 1369 if (w->repeat)
532 { 1370 {
1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1372
533 w->at = now + w->repeat; 1373 ((WT)w)->at += w->repeat;
534 assert (("timer timeout in the past, negative repeat?", w->at > now)); 1374 if (((WT)w)->at < mn_now)
1375 ((WT)w)->at = mn_now;
1376
535 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
536 } 1378 }
537 else 1379 else
538 ev_timer_stop (w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539 }
540}
541 1381
542static void 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1383 }
1384}
1385
1386#if EV_PERIODIC_ENABLE
1387void inline_size
543periodics_reify (void) 1388periodics_reify (EV_P)
544{ 1389{
545 while (periodiccnt && periodics [0]->at <= ev_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
546 { 1391 {
547 struct ev_periodic *w = periodics [0]; 1392 ev_periodic *w = (ev_periodic *)periodics [0];
1393
1394 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
548 1395
549 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
550 if (w->interval) 1397 if (w->reschedule_cb)
551 { 1398 {
552 w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; 1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
553 assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); 1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
554 downheap ((WT *)periodics, periodiccnt, 0); 1401 downheap (periodics, periodiccnt, 0);
1402 }
1403 else if (w->interval)
1404 {
1405 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1408 downheap (periodics, periodiccnt, 0);
555 } 1409 }
556 else 1410 else
557 ev_periodic_stop (w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558 1412
559 event ((W)w, EV_TIMEOUT); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
560 } 1414 }
561} 1415}
562 1416
563static void 1417static void noinline
564periodics_reschedule (ev_tstamp diff) 1418periodics_reschedule (EV_P)
565{ 1419{
566 int i; 1420 int i;
567 1421
568 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
569 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
570 { 1424 {
571 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
572 1426
1427 if (w->reschedule_cb)
1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
573 if (w->interval) 1429 else if (w->interval)
1430 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431 }
1432
1433 /* now rebuild the heap */
1434 for (i = periodiccnt >> 1; i--; )
1435 downheap (periodics, periodiccnt, i);
1436}
1437#endif
1438
1439#if EV_IDLE_ENABLE
1440void inline_size
1441idle_reify (EV_P)
1442{
1443 if (expect_false (idleall))
1444 {
1445 int pri;
1446
1447 for (pri = NUMPRI; pri--; )
574 { 1448 {
575 ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; 1449 if (pendingcnt [pri])
1450 break;
576 1451
577 if (fabs (diff) >= 1e-4) 1452 if (idlecnt [pri])
578 { 1453 {
579 ev_periodic_stop (w); 1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
580 ev_periodic_start (w); 1455 break;
581
582 i = 0; /* restart loop, inefficient, but time jumps should be rare */
583 } 1456 }
584 } 1457 }
585 } 1458 }
586} 1459}
1460#endif
587 1461
588static void 1462void inline_speed
589time_update (void) 1463time_update (EV_P_ ev_tstamp max_block)
590{ 1464{
591 int i; 1465 int i;
592 1466
593 ev_now = ev_time (); 1467#if EV_USE_MONOTONIC
594
595 if (have_monotonic) 1468 if (expect_true (have_monotonic))
596 { 1469 {
597 ev_tstamp odiff = diff; 1470 ev_tstamp odiff = rtmn_diff;
598 1471
599 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1472 mn_now = get_clock ();
1473
1474 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1475 /* interpolate in the meantime */
1476 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
600 { 1477 {
601 now = get_clock (); 1478 ev_rt_now = rtmn_diff + mn_now;
1479 return;
1480 }
1481
1482 now_floor = mn_now;
1483 ev_rt_now = ev_time ();
1484
1485 /* loop a few times, before making important decisions.
1486 * on the choice of "4": one iteration isn't enough,
1487 * in case we get preempted during the calls to
1488 * ev_time and get_clock. a second call is almost guaranteed
1489 * to succeed in that case, though. and looping a few more times
1490 * doesn't hurt either as we only do this on time-jumps or
1491 * in the unlikely event of having been preempted here.
1492 */
1493 for (i = 4; --i; )
1494 {
602 diff = ev_now - now; 1495 rtmn_diff = ev_rt_now - mn_now;
603 1496
604 if (fabs (odiff - diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
605 return; /* all is well */ 1498 return; /* all is well */
606 1499
607 ev_now = ev_time (); 1500 ev_rt_now = ev_time ();
1501 mn_now = get_clock ();
1502 now_floor = mn_now;
608 } 1503 }
609 1504
1505# if EV_PERIODIC_ENABLE
610 periodics_reschedule (diff - odiff); 1506 periodics_reschedule (EV_A);
1507# endif
611 /* no timer adjustment, as the monotonic clock doesn't jump */ 1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
612 } 1510 }
613 else 1511 else
1512#endif
614 { 1513 {
615 if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) 1514 ev_rt_now = ev_time ();
1515
1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
616 { 1517 {
1518#if EV_PERIODIC_ENABLE
617 periodics_reschedule (ev_now - now); 1519 periodics_reschedule (EV_A);
618 1520#endif
619 /* adjust timers. this is easy, as the offset is the same for all */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
620 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
621 timers [i]->at += diff; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
622 } 1524 }
623 1525
624 now = ev_now; 1526 mn_now = ev_rt_now;
625 } 1527 }
626} 1528}
627 1529
628int ev_loop_done; 1530void
1531ev_ref (EV_P)
1532{
1533 ++activecnt;
1534}
629 1535
1536void
1537ev_unref (EV_P)
1538{
1539 --activecnt;
1540}
1541
1542static int loop_done;
1543
1544void
630void ev_loop (int flags) 1545ev_loop (EV_P_ int flags)
631{ 1546{
632 double block;
633 ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1547 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1548 ? EVUNLOOP_ONE
1549 : EVUNLOOP_CANCEL;
1550
1551 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
634 1552
635 do 1553 do
636 { 1554 {
1555#ifndef _WIN32
1556 if (expect_false (curpid)) /* penalise the forking check even more */
1557 if (expect_false (getpid () != curpid))
1558 {
1559 curpid = getpid ();
1560 postfork = 1;
1561 }
1562#endif
1563
1564#if EV_FORK_ENABLE
1565 /* we might have forked, so queue fork handlers */
1566 if (expect_false (postfork))
1567 if (forkcnt)
1568 {
1569 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1570 call_pending (EV_A);
1571 }
1572#endif
1573
637 /* queue check watchers (and execute them) */ 1574 /* queue prepare watchers (and execute them) */
638 if (preparecnt) 1575 if (expect_false (preparecnt))
639 { 1576 {
640 queue_events ((W *)prepares, preparecnt, EV_PREPARE); 1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641 call_pending (); 1578 call_pending (EV_A);
642 } 1579 }
643 1580
1581 if (expect_false (!activecnt))
1582 break;
1583
1584 /* we might have forked, so reify kernel state if necessary */
1585 if (expect_false (postfork))
1586 loop_fork (EV_A);
1587
644 /* update fd-related kernel structures */ 1588 /* update fd-related kernel structures */
645 fd_reify (); 1589 fd_reify (EV_A);
646 1590
647 /* calculate blocking time */ 1591 /* calculate blocking time */
1592 {
1593 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.;
648 1595
649 /* we only need this for !monotonic clockor timers, but as we basically 1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
650 always have timers, we just calculate it always */
651 ev_now = ev_time ();
652
653 if (flags & EVLOOP_NONBLOCK || idlecnt)
654 block = 0.;
655 else
656 { 1597 {
1598 /* update time to cancel out callback processing overhead */
1599 time_update (EV_A_ 1e100);
1600
657 block = MAX_BLOCKTIME; 1601 waittime = MAX_BLOCKTIME;
658 1602
659 if (timercnt) 1603 if (timercnt)
660 { 1604 {
661 ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; 1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
662 if (block > to) block = to; 1606 if (waittime > to) waittime = to;
663 } 1607 }
664 1608
1609#if EV_PERIODIC_ENABLE
665 if (periodiccnt) 1610 if (periodiccnt)
666 { 1611 {
667 ev_tstamp to = periodics [0]->at - ev_now + method_fudge; 1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
668 if (block > to) block = to; 1613 if (waittime > to) waittime = to;
669 } 1614 }
1615#endif
670 1616
671 if (block < 0.) block = 0.; 1617 if (expect_false (waittime < timeout_blocktime))
1618 waittime = timeout_blocktime;
1619
1620 sleeptime = waittime - backend_fudge;
1621
1622 if (expect_true (sleeptime > io_blocktime))
1623 sleeptime = io_blocktime;
1624
1625 if (sleeptime)
1626 {
1627 ev_sleep (sleeptime);
1628 waittime -= sleeptime;
1629 }
672 } 1630 }
673 1631
674 method_poll (block); 1632 ++loop_count;
1633 backend_poll (EV_A_ waittime);
675 1634
676 /* update ev_now, do magic */ 1635 /* update ev_rt_now, do magic */
677 time_update (); 1636 time_update (EV_A_ waittime + sleeptime);
1637 }
678 1638
679 /* queue pending timers and reschedule them */ 1639 /* queue pending timers and reschedule them */
680 timers_reify (); /* relative timers called last */ 1640 timers_reify (EV_A); /* relative timers called last */
1641#if EV_PERIODIC_ENABLE
681 periodics_reify (); /* absolute timers called first */ 1642 periodics_reify (EV_A); /* absolute timers called first */
1643#endif
682 1644
1645#if EV_IDLE_ENABLE
683 /* queue idle watchers unless io or timers are pending */ 1646 /* queue idle watchers unless other events are pending */
684 if (!pendingcnt) 1647 idle_reify (EV_A);
685 queue_events ((W *)idles, idlecnt, EV_IDLE); 1648#endif
686 1649
687 /* queue check watchers, to be executed first */ 1650 /* queue check watchers, to be executed first */
688 if (checkcnt) 1651 if (expect_false (checkcnt))
689 queue_events ((W *)checks, checkcnt, EV_CHECK); 1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690 1653
691 call_pending (); 1654 call_pending (EV_A);
692 }
693 while (!ev_loop_done);
694 1655
695 if (ev_loop_done != 2) 1656 }
1657 while (expect_true (activecnt && !loop_done));
1658
1659 if (loop_done == EVUNLOOP_ONE)
1660 loop_done = EVUNLOOP_CANCEL;
1661}
1662
1663void
1664ev_unloop (EV_P_ int how)
1665{
696 ev_loop_done = 0; 1666 loop_done = how;
697} 1667}
698 1668
699/*****************************************************************************/ 1669/*****************************************************************************/
700 1670
701static void 1671void inline_size
702wlist_add (WL *head, WL elem) 1672wlist_add (WL *head, WL elem)
703{ 1673{
704 elem->next = *head; 1674 elem->next = *head;
705 *head = elem; 1675 *head = elem;
706} 1676}
707 1677
708static void 1678void inline_size
709wlist_del (WL *head, WL elem) 1679wlist_del (WL *head, WL elem)
710{ 1680{
711 while (*head) 1681 while (*head)
712 { 1682 {
713 if (*head == elem) 1683 if (*head == elem)
… …
718 1688
719 head = &(*head)->next; 1689 head = &(*head)->next;
720 } 1690 }
721} 1691}
722 1692
723static void 1693void inline_speed
724ev_clear (W w) 1694clear_pending (EV_P_ W w)
725{ 1695{
726 if (w->pending) 1696 if (w->pending)
727 { 1697 {
728 pendings [w->pending - 1].w = 0; 1698 pendings [ABSPRI (w)][w->pending - 1].w = 0;
729 w->pending = 0; 1699 w->pending = 0;
730 } 1700 }
731} 1701}
732 1702
733static void 1703int
1704ev_clear_pending (EV_P_ void *w)
1705{
1706 W w_ = (W)w;
1707 int pending = w_->pending;
1708
1709 if (expect_true (pending))
1710 {
1711 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1712 w_->pending = 0;
1713 p->w = 0;
1714 return p->events;
1715 }
1716 else
1717 return 0;
1718}
1719
1720void inline_size
1721pri_adjust (EV_P_ W w)
1722{
1723 int pri = w->priority;
1724 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1725 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1726 w->priority = pri;
1727}
1728
1729void inline_speed
734ev_start (W w, int active) 1730ev_start (EV_P_ W w, int active)
735{ 1731{
1732 pri_adjust (EV_A_ w);
736 w->active = active; 1733 w->active = active;
1734 ev_ref (EV_A);
737} 1735}
738 1736
739static void 1737void inline_size
740ev_stop (W w) 1738ev_stop (EV_P_ W w)
741{ 1739{
1740 ev_unref (EV_A);
742 w->active = 0; 1741 w->active = 0;
743} 1742}
744 1743
745/*****************************************************************************/ 1744/*****************************************************************************/
746 1745
747void 1746void noinline
748ev_io_start (struct ev_io *w) 1747ev_io_start (EV_P_ ev_io *w)
749{ 1748{
750 if (ev_is_active (w))
751 return;
752
753 int fd = w->fd; 1749 int fd = w->fd;
754 1750
1751 if (expect_false (ev_is_active (w)))
1752 return;
1753
1754 assert (("ev_io_start called with negative fd", fd >= 0));
1755
755 ev_start ((W)w, 1); 1756 ev_start (EV_A_ (W)w, 1);
756 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
757 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1758 wlist_add (&anfds[fd].head, (WL)w);
758 1759
759 fd_change (fd); 1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1761 w->events &= ~EV_IOFDSET;
760} 1762}
761 1763
762void 1764void noinline
763ev_io_stop (struct ev_io *w) 1765ev_io_stop (EV_P_ ev_io *w)
764{ 1766{
765 ev_clear ((W)w); 1767 clear_pending (EV_A_ (W)w);
766 if (!ev_is_active (w)) 1768 if (expect_false (!ev_is_active (w)))
767 return; 1769 return;
768 1770
1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1772
769 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1773 wlist_del (&anfds[w->fd].head, (WL)w);
770 ev_stop ((W)w); 1774 ev_stop (EV_A_ (W)w);
771 1775
772 fd_change (w->fd); 1776 fd_change (EV_A_ w->fd, 1);
773} 1777}
774 1778
775void 1779void noinline
776ev_timer_start (struct ev_timer *w) 1780ev_timer_start (EV_P_ ev_timer *w)
777{ 1781{
778 if (ev_is_active (w)) 1782 if (expect_false (ev_is_active (w)))
779 return; 1783 return;
780 1784
781 w->at += now; 1785 ((WT)w)->at += mn_now;
782 1786
783 assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); 1787 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784 1788
785 ev_start ((W)w, ++timercnt); 1789 ev_start (EV_A_ (W)w, ++timercnt);
786 array_needsize (timers, timermax, timercnt, ); 1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
787 timers [timercnt - 1] = w; 1791 timers [timercnt - 1] = (WT)w;
788 upheap ((WT *)timers, timercnt - 1); 1792 upheap (timers, timercnt - 1);
789}
790 1793
791void 1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1795}
1796
1797void noinline
792ev_timer_stop (struct ev_timer *w) 1798ev_timer_stop (EV_P_ ev_timer *w)
793{ 1799{
794 ev_clear ((W)w); 1800 clear_pending (EV_A_ (W)w);
795 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
796 return; 1802 return;
797 1803
798 if (w->active < timercnt--) 1804 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1805
1806 {
1807 int active = ((W)w)->active;
1808
1809 if (expect_true (--active < --timercnt))
799 { 1810 {
800 timers [w->active - 1] = timers [timercnt]; 1811 timers [active] = timers [timercnt];
801 downheap ((WT *)timers, timercnt, w->active - 1); 1812 adjustheap (timers, timercnt, active);
802 } 1813 }
1814 }
803 1815
804 w->at = w->repeat; 1816 ((WT)w)->at -= mn_now;
805 1817
806 ev_stop ((W)w); 1818 ev_stop (EV_A_ (W)w);
807} 1819}
808 1820
809void 1821void noinline
810ev_timer_again (struct ev_timer *w) 1822ev_timer_again (EV_P_ ev_timer *w)
811{ 1823{
812 if (ev_is_active (w)) 1824 if (ev_is_active (w))
813 { 1825 {
814 if (w->repeat) 1826 if (w->repeat)
815 { 1827 {
816 w->at = now + w->repeat; 1828 ((WT)w)->at = mn_now + w->repeat;
817 downheap ((WT *)timers, timercnt, w->active - 1); 1829 adjustheap (timers, timercnt, ((W)w)->active - 1);
818 } 1830 }
819 else 1831 else
820 ev_timer_stop (w); 1832 ev_timer_stop (EV_A_ w);
821 } 1833 }
822 else if (w->repeat) 1834 else if (w->repeat)
1835 {
1836 w->at = w->repeat;
823 ev_timer_start (w); 1837 ev_timer_start (EV_A_ w);
1838 }
824} 1839}
825 1840
826void 1841#if EV_PERIODIC_ENABLE
1842void noinline
827ev_periodic_start (struct ev_periodic *w) 1843ev_periodic_start (EV_P_ ev_periodic *w)
828{ 1844{
829 if (ev_is_active (w)) 1845 if (expect_false (ev_is_active (w)))
830 return; 1846 return;
831 1847
832 assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); 1848 if (w->reschedule_cb)
833 1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1850 else if (w->interval)
1851 {
1852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
834 /* this formula differs from the one in periodic_reify because we do not always round up */ 1853 /* this formula differs from the one in periodic_reify because we do not always round up */
835 if (w->interval)
836 w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; 1854 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1855 }
1856 else
1857 ((WT)w)->at = w->offset;
837 1858
838 ev_start ((W)w, ++periodiccnt); 1859 ev_start (EV_A_ (W)w, ++periodiccnt);
839 array_needsize (periodics, periodicmax, periodiccnt, ); 1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
840 periodics [periodiccnt - 1] = w; 1861 periodics [periodiccnt - 1] = (WT)w;
841 upheap ((WT *)periodics, periodiccnt - 1); 1862 upheap (periodics, periodiccnt - 1);
842}
843 1863
844void 1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1865}
1866
1867void noinline
845ev_periodic_stop (struct ev_periodic *w) 1868ev_periodic_stop (EV_P_ ev_periodic *w)
846{ 1869{
847 ev_clear ((W)w); 1870 clear_pending (EV_A_ (W)w);
848 if (!ev_is_active (w)) 1871 if (expect_false (!ev_is_active (w)))
849 return; 1872 return;
850 1873
851 if (w->active < periodiccnt--) 1874 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1875
1876 {
1877 int active = ((W)w)->active;
1878
1879 if (expect_true (--active < --periodiccnt))
852 { 1880 {
853 periodics [w->active - 1] = periodics [periodiccnt]; 1881 periodics [active] = periodics [periodiccnt];
854 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1882 adjustheap (periodics, periodiccnt, active);
855 } 1883 }
1884 }
856 1885
857 ev_stop ((W)w); 1886 ev_stop (EV_A_ (W)w);
858} 1887}
859 1888
860void 1889void noinline
1890ev_periodic_again (EV_P_ ev_periodic *w)
1891{
1892 /* TODO: use adjustheap and recalculation */
1893 ev_periodic_stop (EV_A_ w);
1894 ev_periodic_start (EV_A_ w);
1895}
1896#endif
1897
1898#ifndef SA_RESTART
1899# define SA_RESTART 0
1900#endif
1901
1902void noinline
861ev_signal_start (struct ev_signal *w) 1903ev_signal_start (EV_P_ ev_signal *w)
862{ 1904{
1905#if EV_MULTIPLICITY
1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907#endif
863 if (ev_is_active (w)) 1908 if (expect_false (ev_is_active (w)))
864 return; 1909 return;
865 1910
866 ev_start ((W)w, 1); 1911 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1912
1913 evpipe_init (EV_A);
1914
1915 {
1916#ifndef _WIN32
1917 sigset_t full, prev;
1918 sigfillset (&full);
1919 sigprocmask (SIG_SETMASK, &full, &prev);
1920#endif
1921
867 array_needsize (signals, signalmax, w->signum, signals_init); 1922 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1923
1924#ifndef _WIN32
1925 sigprocmask (SIG_SETMASK, &prev, 0);
1926#endif
1927 }
1928
1929 ev_start (EV_A_ (W)w, 1);
868 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1930 wlist_add (&signals [w->signum - 1].head, (WL)w);
869 1931
870 if (!w->next) 1932 if (!((WL)w)->next)
871 { 1933 {
1934#if _WIN32
1935 signal (w->signum, sighandler);
1936#else
872 struct sigaction sa; 1937 struct sigaction sa;
873 sa.sa_handler = sighandler; 1938 sa.sa_handler = sighandler;
874 sigfillset (&sa.sa_mask); 1939 sigfillset (&sa.sa_mask);
875 sa.sa_flags = 0; 1940 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876 sigaction (w->signum, &sa, 0); 1941 sigaction (w->signum, &sa, 0);
1942#endif
877 } 1943 }
878} 1944}
879 1945
880void 1946void noinline
881ev_signal_stop (struct ev_signal *w) 1947ev_signal_stop (EV_P_ ev_signal *w)
882{ 1948{
883 ev_clear ((W)w); 1949 clear_pending (EV_A_ (W)w);
884 if (!ev_is_active (w)) 1950 if (expect_false (!ev_is_active (w)))
885 return; 1951 return;
886 1952
887 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1953 wlist_del (&signals [w->signum - 1].head, (WL)w);
888 ev_stop ((W)w); 1954 ev_stop (EV_A_ (W)w);
889 1955
890 if (!signals [w->signum - 1].head) 1956 if (!signals [w->signum - 1].head)
891 signal (w->signum, SIG_DFL); 1957 signal (w->signum, SIG_DFL);
892} 1958}
893 1959
894void 1960void
895ev_idle_start (struct ev_idle *w) 1961ev_child_start (EV_P_ ev_child *w)
896{ 1962{
1963#if EV_MULTIPLICITY
1964 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1965#endif
897 if (ev_is_active (w)) 1966 if (expect_false (ev_is_active (w)))
898 return; 1967 return;
899 1968
900 ev_start ((W)w, ++idlecnt); 1969 ev_start (EV_A_ (W)w, 1);
901 array_needsize (idles, idlemax, idlecnt, ); 1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
902 idles [idlecnt - 1] = w;
903} 1971}
904 1972
905void 1973void
906ev_idle_stop (struct ev_idle *w) 1974ev_child_stop (EV_P_ ev_child *w)
907{ 1975{
908 ev_clear ((W)w); 1976 clear_pending (EV_A_ (W)w);
909 if (ev_is_active (w)) 1977 if (expect_false (!ev_is_active (w)))
910 return; 1978 return;
911 1979
912 idles [w->active - 1] = idles [--idlecnt]; 1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
913 ev_stop ((W)w); 1981 ev_stop (EV_A_ (W)w);
914} 1982}
915 1983
1984#if EV_STAT_ENABLE
1985
1986# ifdef _WIN32
1987# undef lstat
1988# define lstat(a,b) _stati64 (a,b)
1989# endif
1990
1991#define DEF_STAT_INTERVAL 5.0074891
1992#define MIN_STAT_INTERVAL 0.1074891
1993
1994static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1995
1996#if EV_USE_INOTIFY
1997# define EV_INOTIFY_BUFSIZE 8192
1998
1999static void noinline
2000infy_add (EV_P_ ev_stat *w)
2001{
2002 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);
2003
2004 if (w->wd < 0)
2005 {
2006 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2007
2008 /* monitor some parent directory for speedup hints */
2009 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2010 {
2011 char path [4096];
2012 strcpy (path, w->path);
2013
2014 do
2015 {
2016 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2017 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2018
2019 char *pend = strrchr (path, '/');
2020
2021 if (!pend)
2022 break; /* whoops, no '/', complain to your admin */
2023
2024 *pend = 0;
2025 w->wd = inotify_add_watch (fs_fd, path, mask);
2026 }
2027 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2028 }
2029 }
2030 else
2031 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2032
2033 if (w->wd >= 0)
2034 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2035}
2036
2037static void noinline
2038infy_del (EV_P_ ev_stat *w)
2039{
2040 int slot;
2041 int wd = w->wd;
2042
2043 if (wd < 0)
2044 return;
2045
2046 w->wd = -2;
2047 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2048 wlist_del (&fs_hash [slot].head, (WL)w);
2049
2050 /* remove this watcher, if others are watching it, they will rearm */
2051 inotify_rm_watch (fs_fd, wd);
2052}
2053
2054static void noinline
2055infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2056{
2057 if (slot < 0)
2058 /* overflow, need to check for all hahs slots */
2059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2060 infy_wd (EV_A_ slot, wd, ev);
2061 else
2062 {
2063 WL w_;
2064
2065 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2066 {
2067 ev_stat *w = (ev_stat *)w_;
2068 w_ = w_->next; /* lets us remove this watcher and all before it */
2069
2070 if (w->wd == wd || wd == -1)
2071 {
2072 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2073 {
2074 w->wd = -1;
2075 infy_add (EV_A_ w); /* re-add, no matter what */
2076 }
2077
2078 stat_timer_cb (EV_A_ &w->timer, 0);
2079 }
2080 }
2081 }
2082}
2083
2084static void
2085infy_cb (EV_P_ ev_io *w, int revents)
2086{
2087 char buf [EV_INOTIFY_BUFSIZE];
2088 struct inotify_event *ev = (struct inotify_event *)buf;
2089 int ofs;
2090 int len = read (fs_fd, buf, sizeof (buf));
2091
2092 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2093 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2094}
2095
2096void inline_size
2097infy_init (EV_P)
2098{
2099 if (fs_fd != -2)
2100 return;
2101
2102 fs_fd = inotify_init ();
2103
2104 if (fs_fd >= 0)
2105 {
2106 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2107 ev_set_priority (&fs_w, EV_MAXPRI);
2108 ev_io_start (EV_A_ &fs_w);
2109 }
2110}
2111
2112void inline_size
2113infy_fork (EV_P)
2114{
2115 int slot;
2116
2117 if (fs_fd < 0)
2118 return;
2119
2120 close (fs_fd);
2121 fs_fd = inotify_init ();
2122
2123 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2124 {
2125 WL w_ = fs_hash [slot].head;
2126 fs_hash [slot].head = 0;
2127
2128 while (w_)
2129 {
2130 ev_stat *w = (ev_stat *)w_;
2131 w_ = w_->next; /* lets us add this watcher */
2132
2133 w->wd = -1;
2134
2135 if (fs_fd >= 0)
2136 infy_add (EV_A_ w); /* re-add, no matter what */
2137 else
2138 ev_timer_start (EV_A_ &w->timer);
2139 }
2140
2141 }
2142}
2143
2144#endif
2145
916void 2146void
2147ev_stat_stat (EV_P_ ev_stat *w)
2148{
2149 if (lstat (w->path, &w->attr) < 0)
2150 w->attr.st_nlink = 0;
2151 else if (!w->attr.st_nlink)
2152 w->attr.st_nlink = 1;
2153}
2154
2155static void noinline
2156stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2157{
2158 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2159
2160 /* we copy this here each the time so that */
2161 /* prev has the old value when the callback gets invoked */
2162 w->prev = w->attr;
2163 ev_stat_stat (EV_A_ w);
2164
2165 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2166 if (
2167 w->prev.st_dev != w->attr.st_dev
2168 || w->prev.st_ino != w->attr.st_ino
2169 || w->prev.st_mode != w->attr.st_mode
2170 || w->prev.st_nlink != w->attr.st_nlink
2171 || w->prev.st_uid != w->attr.st_uid
2172 || w->prev.st_gid != w->attr.st_gid
2173 || w->prev.st_rdev != w->attr.st_rdev
2174 || w->prev.st_size != w->attr.st_size
2175 || w->prev.st_atime != w->attr.st_atime
2176 || w->prev.st_mtime != w->attr.st_mtime
2177 || w->prev.st_ctime != w->attr.st_ctime
2178 ) {
2179 #if EV_USE_INOTIFY
2180 infy_del (EV_A_ w);
2181 infy_add (EV_A_ w);
2182 ev_stat_stat (EV_A_ w); /* avoid race... */
2183 #endif
2184
2185 ev_feed_event (EV_A_ w, EV_STAT);
2186 }
2187}
2188
2189void
2190ev_stat_start (EV_P_ ev_stat *w)
2191{
2192 if (expect_false (ev_is_active (w)))
2193 return;
2194
2195 /* since we use memcmp, we need to clear any padding data etc. */
2196 memset (&w->prev, 0, sizeof (ev_statdata));
2197 memset (&w->attr, 0, sizeof (ev_statdata));
2198
2199 ev_stat_stat (EV_A_ w);
2200
2201 if (w->interval < MIN_STAT_INTERVAL)
2202 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2203
2204 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2205 ev_set_priority (&w->timer, ev_priority (w));
2206
2207#if EV_USE_INOTIFY
2208 infy_init (EV_A);
2209
2210 if (fs_fd >= 0)
2211 infy_add (EV_A_ w);
2212 else
2213#endif
2214 ev_timer_start (EV_A_ &w->timer);
2215
2216 ev_start (EV_A_ (W)w, 1);
2217}
2218
2219void
2220ev_stat_stop (EV_P_ ev_stat *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226#if EV_USE_INOTIFY
2227 infy_del (EV_A_ w);
2228#endif
2229 ev_timer_stop (EV_A_ &w->timer);
2230
2231 ev_stop (EV_A_ (W)w);
2232}
2233#endif
2234
2235#if EV_IDLE_ENABLE
2236void
2237ev_idle_start (EV_P_ ev_idle *w)
2238{
2239 if (expect_false (ev_is_active (w)))
2240 return;
2241
2242 pri_adjust (EV_A_ (W)w);
2243
2244 {
2245 int active = ++idlecnt [ABSPRI (w)];
2246
2247 ++idleall;
2248 ev_start (EV_A_ (W)w, active);
2249
2250 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2251 idles [ABSPRI (w)][active - 1] = w;
2252 }
2253}
2254
2255void
2256ev_idle_stop (EV_P_ ev_idle *w)
2257{
2258 clear_pending (EV_A_ (W)w);
2259 if (expect_false (!ev_is_active (w)))
2260 return;
2261
2262 {
2263 int active = ((W)w)->active;
2264
2265 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2266 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2267
2268 ev_stop (EV_A_ (W)w);
2269 --idleall;
2270 }
2271}
2272#endif
2273
2274void
917ev_prepare_start (struct ev_prepare *w) 2275ev_prepare_start (EV_P_ ev_prepare *w)
918{ 2276{
919 if (ev_is_active (w)) 2277 if (expect_false (ev_is_active (w)))
920 return; 2278 return;
921 2279
922 ev_start ((W)w, ++preparecnt); 2280 ev_start (EV_A_ (W)w, ++preparecnt);
923 array_needsize (prepares, preparemax, preparecnt, ); 2281 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
924 prepares [preparecnt - 1] = w; 2282 prepares [preparecnt - 1] = w;
925} 2283}
926 2284
927void 2285void
928ev_prepare_stop (struct ev_prepare *w) 2286ev_prepare_stop (EV_P_ ev_prepare *w)
929{ 2287{
930 ev_clear ((W)w); 2288 clear_pending (EV_A_ (W)w);
931 if (ev_is_active (w)) 2289 if (expect_false (!ev_is_active (w)))
932 return; 2290 return;
933 2291
2292 {
2293 int active = ((W)w)->active;
934 prepares [w->active - 1] = prepares [--preparecnt]; 2294 prepares [active - 1] = prepares [--preparecnt];
2295 ((W)prepares [active - 1])->active = active;
2296 }
2297
935 ev_stop ((W)w); 2298 ev_stop (EV_A_ (W)w);
936} 2299}
937 2300
938void 2301void
939ev_check_start (struct ev_check *w) 2302ev_check_start (EV_P_ ev_check *w)
940{ 2303{
941 if (ev_is_active (w)) 2304 if (expect_false (ev_is_active (w)))
942 return; 2305 return;
943 2306
944 ev_start ((W)w, ++checkcnt); 2307 ev_start (EV_A_ (W)w, ++checkcnt);
945 array_needsize (checks, checkmax, checkcnt, ); 2308 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
946 checks [checkcnt - 1] = w; 2309 checks [checkcnt - 1] = w;
947} 2310}
948 2311
949void 2312void
950ev_check_stop (struct ev_check *w) 2313ev_check_stop (EV_P_ ev_check *w)
951{ 2314{
952 ev_clear ((W)w); 2315 clear_pending (EV_A_ (W)w);
953 if (ev_is_active (w)) 2316 if (expect_false (!ev_is_active (w)))
954 return; 2317 return;
955 2318
2319 {
2320 int active = ((W)w)->active;
956 checks [w->active - 1] = checks [--checkcnt]; 2321 checks [active - 1] = checks [--checkcnt];
2322 ((W)checks [active - 1])->active = active;
2323 }
2324
957 ev_stop ((W)w); 2325 ev_stop (EV_A_ (W)w);
958} 2326}
959 2327
960void 2328#if EV_EMBED_ENABLE
961ev_child_start (struct ev_child *w) 2329void noinline
2330ev_embed_sweep (EV_P_ ev_embed *w)
962{ 2331{
2332 ev_loop (w->other, EVLOOP_NONBLOCK);
2333}
2334
2335static void
2336embed_io_cb (EV_P_ ev_io *io, int revents)
2337{
2338 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2339
963 if (ev_is_active (w)) 2340 if (ev_cb (w))
964 return; 2341 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2342 else
2343 ev_loop (w->other, EVLOOP_NONBLOCK);
2344}
965 2345
2346static void
2347embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2348{
2349 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2350
2351 {
2352 struct ev_loop *loop = w->other;
2353
2354 while (fdchangecnt)
2355 {
2356 fd_reify (EV_A);
2357 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2358 }
2359 }
2360}
2361
2362#if 0
2363static void
2364embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2365{
2366 ev_idle_stop (EV_A_ idle);
2367}
2368#endif
2369
2370void
2371ev_embed_start (EV_P_ ev_embed *w)
2372{
2373 if (expect_false (ev_is_active (w)))
2374 return;
2375
2376 {
2377 struct ev_loop *loop = w->other;
2378 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2379 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2380 }
2381
2382 ev_set_priority (&w->io, ev_priority (w));
2383 ev_io_start (EV_A_ &w->io);
2384
2385 ev_prepare_init (&w->prepare, embed_prepare_cb);
2386 ev_set_priority (&w->prepare, EV_MINPRI);
2387 ev_prepare_start (EV_A_ &w->prepare);
2388
2389 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2390
966 ev_start ((W)w, 1); 2391 ev_start (EV_A_ (W)w, 1);
967 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968} 2392}
969 2393
970void 2394void
971ev_child_stop (struct ev_child *w) 2395ev_embed_stop (EV_P_ ev_embed *w)
972{ 2396{
973 ev_clear ((W)w); 2397 clear_pending (EV_A_ (W)w);
974 if (ev_is_active (w)) 2398 if (expect_false (!ev_is_active (w)))
975 return; 2399 return;
976 2400
977 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2401 ev_io_stop (EV_A_ &w->io);
2402 ev_prepare_stop (EV_A_ &w->prepare);
2403
978 ev_stop ((W)w); 2404 ev_stop (EV_A_ (W)w);
979} 2405}
2406#endif
2407
2408#if EV_FORK_ENABLE
2409void
2410ev_fork_start (EV_P_ ev_fork *w)
2411{
2412 if (expect_false (ev_is_active (w)))
2413 return;
2414
2415 ev_start (EV_A_ (W)w, ++forkcnt);
2416 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2417 forks [forkcnt - 1] = w;
2418}
2419
2420void
2421ev_fork_stop (EV_P_ ev_fork *w)
2422{
2423 clear_pending (EV_A_ (W)w);
2424 if (expect_false (!ev_is_active (w)))
2425 return;
2426
2427 {
2428 int active = ((W)w)->active;
2429 forks [active - 1] = forks [--forkcnt];
2430 ((W)forks [active - 1])->active = active;
2431 }
2432
2433 ev_stop (EV_A_ (W)w);
2434}
2435#endif
2436
2437#if EV_ASYNC_ENABLE
2438void
2439ev_async_start (EV_P_ ev_async *w)
2440{
2441 if (expect_false (ev_is_active (w)))
2442 return;
2443
2444 evpipe_init (EV_A);
2445
2446 ev_start (EV_A_ (W)w, ++asynccnt);
2447 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2448 asyncs [asynccnt - 1] = w;
2449}
2450
2451void
2452ev_async_stop (EV_P_ ev_async *w)
2453{
2454 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w)))
2456 return;
2457
2458 {
2459 int active = ((W)w)->active;
2460 asyncs [active - 1] = asyncs [--asynccnt];
2461 ((W)asyncs [active - 1])->active = active;
2462 }
2463
2464 ev_stop (EV_A_ (W)w);
2465}
2466
2467void
2468ev_async_send (EV_P_ ev_async *w)
2469{
2470 w->sent = 1;
2471 evpipe_write (EV_A_ &gotasync);
2472}
2473#endif
980 2474
981/*****************************************************************************/ 2475/*****************************************************************************/
982 2476
983struct ev_once 2477struct ev_once
984{ 2478{
985 struct ev_io io; 2479 ev_io io;
986 struct ev_timer to; 2480 ev_timer to;
987 void (*cb)(int revents, void *arg); 2481 void (*cb)(int revents, void *arg);
988 void *arg; 2482 void *arg;
989}; 2483};
990 2484
991static void 2485static void
992once_cb (struct ev_once *once, int revents) 2486once_cb (EV_P_ struct ev_once *once, int revents)
993{ 2487{
994 void (*cb)(int revents, void *arg) = once->cb; 2488 void (*cb)(int revents, void *arg) = once->cb;
995 void *arg = once->arg; 2489 void *arg = once->arg;
996 2490
997 ev_io_stop (&once->io); 2491 ev_io_stop (EV_A_ &once->io);
998 ev_timer_stop (&once->to); 2492 ev_timer_stop (EV_A_ &once->to);
999 free (once); 2493 ev_free (once);
1000 2494
1001 cb (revents, arg); 2495 cb (revents, arg);
1002} 2496}
1003 2497
1004static void 2498static void
1005once_cb_io (struct ev_io *w, int revents) 2499once_cb_io (EV_P_ ev_io *w, int revents)
1006{ 2500{
1007 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2501 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1008} 2502}
1009 2503
1010static void 2504static void
1011once_cb_to (struct ev_timer *w, int revents) 2505once_cb_to (EV_P_ ev_timer *w, int revents)
1012{ 2506{
1013 once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2507 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1014} 2508}
1015 2509
1016void 2510void
1017ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2511ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1018{ 2512{
1019 struct ev_once *once = malloc (sizeof (struct ev_once)); 2513 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1020 2514
1021 if (!once) 2515 if (expect_false (!once))
1022 cb (EV_ERROR, arg); 2516 {
1023 else 2517 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
2518 return;
1024 { 2519 }
2520
1025 once->cb = cb; 2521 once->cb = cb;
1026 once->arg = arg; 2522 once->arg = arg;
1027 2523
1028 ev_watcher_init (&once->io, once_cb_io); 2524 ev_init (&once->io, once_cb_io);
1029
1030 if (fd >= 0) 2525 if (fd >= 0)
1031 { 2526 {
1032 ev_io_set (&once->io, fd, events); 2527 ev_io_set (&once->io, fd, events);
1033 ev_io_start (&once->io); 2528 ev_io_start (EV_A_ &once->io);
1034 } 2529 }
1035 2530
1036 ev_watcher_init (&once->to, once_cb_to); 2531 ev_init (&once->to, once_cb_to);
1037
1038 if (timeout >= 0.) 2532 if (timeout >= 0.)
1039 { 2533 {
1040 ev_timer_set (&once->to, timeout, 0.); 2534 ev_timer_set (&once->to, timeout, 0.);
1041 ev_timer_start (&once->to); 2535 ev_timer_start (EV_A_ &once->to);
1042 }
1043 }
1044}
1045
1046/*****************************************************************************/
1047
1048#if 0
1049
1050struct ev_io wio;
1051
1052static void
1053sin_cb (struct ev_io *w, int revents)
1054{
1055 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056}
1057
1058static void
1059ocb (struct ev_timer *w, int revents)
1060{
1061 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062 ev_timer_stop (w);
1063 ev_timer_start (w);
1064}
1065
1066static void
1067scb (struct ev_signal *w, int revents)
1068{
1069 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070 ev_io_stop (&wio);
1071 ev_io_start (&wio);
1072}
1073
1074static void
1075gcb (struct ev_signal *w, int revents)
1076{
1077 fprintf (stderr, "generic %x\n", revents);
1078
1079}
1080
1081int main (void)
1082{
1083 ev_init (0);
1084
1085 ev_io_init (&wio, sin_cb, 0, EV_READ);
1086 ev_io_start (&wio);
1087
1088 struct ev_timer t[10000];
1089
1090#if 0
1091 int i;
1092 for (i = 0; i < 10000; ++i)
1093 { 2536 }
1094 struct ev_timer *w = t + i;
1095 ev_watcher_init (w, ocb, i);
1096 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097 ev_timer_start (w);
1098 if (drand48 () < 0.5)
1099 ev_timer_stop (w);
1100 }
1101#endif
1102
1103 struct ev_timer t1;
1104 ev_timer_init (&t1, ocb, 5, 10);
1105 ev_timer_start (&t1);
1106
1107 struct ev_signal sig;
1108 ev_signal_init (&sig, scb, SIGQUIT);
1109 ev_signal_start (&sig);
1110
1111 struct ev_check cw;
1112 ev_check_init (&cw, gcb);
1113 ev_check_start (&cw);
1114
1115 struct ev_idle iw;
1116 ev_idle_init (&iw, gcb);
1117 ev_idle_start (&iw);
1118
1119 ev_loop (0);
1120
1121 return 0;
1122} 2537}
1123 2538
2539#if EV_MULTIPLICITY
2540 #include "ev_wrap.h"
1124#endif 2541#endif
1125 2542
2543#ifdef __cplusplus
2544}
2545#endif
1126 2546
1127
1128

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