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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.215 by ayin, Thu Feb 21 10:34:15 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
31#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
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>
135#include <time.h>
136
137#include <signal.h>
138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
47#ifndef WIN32 145#ifndef _WIN32
146# include <sys/time.h>
48# include <sys/wait.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#include <sys/time.h> 155#endif
51#include <time.h>
52 156
53/**/ 157/**/
54 158
55#ifndef EV_USE_MONOTONIC 159#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 160# define EV_USE_MONOTONIC 0
161#endif
162
163#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0
165#endif
166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
57#endif 169#endif
58 170
59#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
61#endif 173#endif
62 174
63#ifndef EV_USEV_POLL 175#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
180# endif
65#endif 181#endif
66 182
67#ifndef EV_USE_EPOLL 183#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 184# define EV_USE_EPOLL 0
69#endif 185#endif
70 186
71#ifndef EV_USE_KQUEUE 187#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 188# define EV_USE_KQUEUE 0
73#endif 189#endif
74 190
75#ifndef EV_USE_REALTIME 191#ifndef EV_USE_PORT
76# define EV_USE_REALTIME 1 192# define EV_USE_PORT 0
193#endif
194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
77#endif 213#endif
78 214
79/**/ 215/**/
80 216
81#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
… …
86#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
89#endif 225#endif
90 226
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
91/**/ 246/**/
92 247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
93#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) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97 261
98#include "ev.h"
99
100#if __GNUC__ >= 3 262#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 264# define noinline __attribute__ ((noinline))
103#else 265#else
104# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
105# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
106#endif 271#endif
107 272
108#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 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
110 282
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
114typedef struct ev_watcher *W; 289typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
117 292
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 293#if EV_USE_MONOTONIC
119static ev_tstamp rt_now; 294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
120static int method; 295/* giving it a reasonably high chance of working on typical architetcures */
121 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
122static int have_monotonic; /* runtime */
123
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif 297#endif
134 298
135#if EV_USEV_POLL 299#ifdef _WIN32
136static struct pollfd *polls; 300# include "ev_win32.c"
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141
142#if EV_USE_EPOLL
143static int epoll_fd = -1;
144
145static struct epoll_event *events;
146static int eventmax;
147#endif
148
149#if EV_USE_KQUEUE
150static int kqueue_fd;
151static struct kevent *kqueue_changes;
152static int kqueue_changemax, kqueue_changecnt;
153static struct kevent *kqueue_events;
154static int kqueue_eventmax;
155#endif 301#endif
156 302
157/*****************************************************************************/ 303/*****************************************************************************/
158 304
159inline ev_tstamp 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
395 ev_tstamp ev_rt_now;
396 #define VAR(name,decl) static decl;
397 #include "ev_vars.h"
398 #undef VAR
399
400 static int ev_default_loop_ptr;
401
402#endif
403
404/*****************************************************************************/
405
406ev_tstamp
160ev_time (void) 407ev_time (void)
161{ 408{
162#if EV_USE_REALTIME 409#if EV_USE_REALTIME
163 struct timespec ts; 410 struct timespec ts;
164 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
… …
168 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
169 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
170#endif 417#endif
171} 418}
172 419
173inline ev_tstamp 420ev_tstamp inline_size
174get_clock (void) 421get_clock (void)
175{ 422{
176#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
177 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
178 { 425 {
… …
183#endif 430#endif
184 431
185 return ev_time (); 432 return ev_time ();
186} 433}
187 434
435#if EV_MULTIPLICITY
188ev_tstamp 436ev_tstamp
189ev_now (EV_P) 437ev_now (EV_P)
190{ 438{
191 return rt_now; 439 return ev_rt_now;
192} 440}
441#endif
193 442
194#define array_roundsize(base,n) ((n) | 4 & ~3) 443void
195 444ev_sleep (ev_tstamp delay)
196#define array_needsize(base,cur,cnt,init) \ 445{
197 if (expect_false ((cnt) > cur)) \ 446 if (delay > 0.)
198 { \
199 int newcnt = cur; \
200 do \
201 { \
202 newcnt = array_roundsize (base, newcnt << 1); \
203 } \
204 while ((cnt) > newcnt); \
205 \
206 base = realloc (base, sizeof (*base) * (newcnt)); \
207 init (base + cur, newcnt - cur); \
208 cur = newcnt; \
209 } 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}
210 467
211/*****************************************************************************/ 468/*****************************************************************************/
212 469
213typedef struct 470int inline_size
471array_nextsize (int elem, int cur, int cnt)
214{ 472{
215 struct ev_watcher_list *head; 473 int ncur = cur + 1;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219 474
220static ANFD *anfds; 475 do
221static int anfdmax; 476 ncur <<= 1;
477 while (cnt > ncur);
222 478
223static 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
224anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
225{ 552{
226 while (count--) 553 while (count--)
227 { 554 {
228 base->head = 0; 555 base->head = 0;
… …
231 558
232 ++base; 559 ++base;
233 } 560 }
234} 561}
235 562
236typedef struct 563void inline_speed
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245static void
246event (EV_P_ W w, int events)
247{
248 if (w->pending)
249 {
250 pendings [ABSPRI (w)][w->pending - 1].events |= events;
251 return;
252 }
253
254 w->pending = ++pendingcnt [ABSPRI (w)];
255 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256 pendings [ABSPRI (w)][w->pending - 1].w = w;
257 pendings [ABSPRI (w)][w->pending - 1].events = events;
258}
259
260static void
261queue_events (EV_P_ W *events, int eventcnt, int type)
262{
263 int i;
264
265 for (i = 0; i < eventcnt; ++i)
266 event (EV_A_ events [i], type);
267}
268
269static void
270fd_event (EV_P_ int fd, int events) 564fd_event (EV_P_ int fd, int revents)
271{ 565{
272 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
273 struct ev_io *w; 567 ev_io *w;
274 568
275 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
276 { 570 {
277 int ev = w->events & events; 571 int ev = w->events & revents;
278 572
279 if (ev) 573 if (ev)
280 event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
281 } 575 }
282} 576}
283 577
284/*****************************************************************************/ 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}
285 584
286static int *fdchanges; 585void inline_size
287static int fdchangemax, fdchangecnt;
288
289static void
290fd_reify (EV_P) 586fd_reify (EV_P)
291{ 587{
292 int i; 588 int i;
293 589
294 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
295 { 591 {
296 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
297 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
298 struct ev_io *w; 594 ev_io *w;
299 595
300 int events = 0; 596 unsigned char events = 0;
301 597
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
303 events |= w->events; 599 events |= (unsigned char)w->events;
304 600
305 anfd->reify = 0; 601#if EV_SELECT_IS_WINSOCKET
306 602 if (events)
307 if (anfd->events != events)
308 { 603 {
309 method_modify (EV_A_ fd, anfd->events, events); 604 unsigned long argp;
310 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));
311 } 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 }
312 } 624 }
313 625
314 fdchangecnt = 0; 626 fdchangecnt = 0;
315} 627}
316 628
317static void 629void inline_size
318fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
319{ 631{
320 if (anfds [fd].reify || fdchangecnt < 0) 632 unsigned char reify = anfds [fd].reify;
321 return;
322
323 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
324 634
635 if (expect_true (!reify))
636 {
325 ++fdchangecnt; 637 ++fdchangecnt;
326 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
328} 641}
329 642
330static void 643void inline_speed
331fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
332{ 645{
333 struct ev_io *w; 646 ev_io *w;
334 647
335 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
336 { 649 {
337 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
338 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339 } 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
340} 663}
341 664
342/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
343static void 666static void noinline
344fd_ebadf (EV_P) 667fd_ebadf (EV_P)
345{ 668{
346 int fd; 669 int fd;
347 670
348 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
349 if (anfds [fd].events) 672 if (anfds [fd].events)
350 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
351 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
352} 675}
353 676
354/* called on ENOMEM in select/poll to kill some fds and retry */ 677/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 678static void noinline
356fd_enomem (EV_P) 679fd_enomem (EV_P)
357{ 680{
358 int fd = anfdmax; 681 int fd;
359 682
360 while (fd--) 683 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 684 if (anfds [fd].events)
362 { 685 {
363 close (fd);
364 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
365 return; 687 return;
366 } 688 }
367} 689}
368 690
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 }
703}
704
369/*****************************************************************************/ 705/*****************************************************************************/
370 706
371static struct ev_timer **timers; 707void inline_speed
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void
378upheap (WT *timers, int k) 708upheap (WT *heap, int k)
379{ 709{
380 WT w = timers [k]; 710 WT w = heap [k];
381 711
382 while (k && timers [k >> 1]->at > w->at) 712 while (k)
383 {
384 timers [k] = timers [k >> 1];
385 timers [k]->active = k + 1;
386 k >>= 1;
387 } 713 {
388
389 timers [k] = w;
390 timers [k]->active = k + 1;
391
392}
393
394static void
395downheap (WT *timers, int N, int k)
396{
397 WT w = timers [k];
398
399 while (k < (N >> 1))
400 {
401 int j = k << 1; 714 int p = (k - 1) >> 1;
402 715
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 716 if (heap [p]->at <= w->at)
404 ++j;
405
406 if (w->at <= timers [j]->at)
407 break; 717 break;
408 718
409 timers [k] = timers [j]; 719 heap [k] = heap [p];
410 timers [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
411 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 (;;)
412 } 734 {
735 int c = (k << 1) + 1;
413 736
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
414 timers [k] = w; 752 heap [k] = w;
415 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);
416} 761}
417 762
418/*****************************************************************************/ 763/*****************************************************************************/
419 764
420typedef struct 765typedef struct
421{ 766{
422 struct ev_watcher_list *head; 767 WL head;
423 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
424} ANSIG; 769} ANSIG;
425 770
426static ANSIG *signals; 771static ANSIG *signals;
427static int signalmax; 772static int signalmax;
428 773
429static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
430static sig_atomic_t volatile gotsig;
431static struct ev_io sigev;
432 775
433static void 776void inline_size
434signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
435{ 778{
436 while (count--) 779 while (count--)
437 { 780 {
438 base->head = 0; 781 base->head = 0;
… …
440 783
441 ++base; 784 ++base;
442 } 785 }
443} 786}
444 787
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/*****************************************************************************/
868
445static void 869static void
446sighandler (int signum) 870sighandler (int signum)
447{ 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
448 signals [signum - 1].gotsig = 1; 880 signals [signum - 1].gotsig = 1;
449 881 evpipe_write (EV_A_ &gotsig);
450 if (!gotsig)
451 {
452 int old_errno = errno;
453 gotsig = 1;
454 write (sigpipe [1], &signum, 1);
455 errno = old_errno;
456 }
457} 882}
458 883
459static void 884void noinline
460sigcb (EV_P_ struct ev_io *iow, int revents) 885ev_feed_signal_event (EV_P_ int signum)
461{ 886{
462 struct ev_watcher_list *w; 887 WL w;
888
889#if EV_MULTIPLICITY
890 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891#endif
892
463 int signum; 893 --signum;
464 894
465 read (sigpipe [0], &revents, 1); 895 if (signum < 0 || signum >= signalmax)
466 gotsig = 0; 896 return;
467 897
468 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig)
470 {
471 signals [signum].gotsig = 0; 898 signals [signum].gotsig = 0;
472 899
473 for (w = signals [signum].head; w; w = w->next) 900 for (w = signals [signum].head; w; w = w->next)
474 event (EV_A_ (W)w, EV_SIGNAL); 901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
475 }
476}
477
478static void
479siginit (EV_P)
480{
481#ifndef WIN32
482 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
483 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485 /* rather than sort out wether we really need nb, set it */
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif
489
490 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev);
492} 902}
493 903
494/*****************************************************************************/ 904/*****************************************************************************/
495 905
496static struct ev_idle **idles; 906static WL childs [EV_PID_HASHSIZE];
497static int idlemax, idlecnt;
498 907
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506
507static struct ev_child *childs [PID_HASHSIZE];
508static struct ev_signal childev;
509
510#ifndef WIN32 908#ifndef _WIN32
909
910static ev_signal childev;
911
912#ifndef WIFCONTINUED
913# define WIFCONTINUED(status) 0
914#endif
915
916void inline_speed
917child_reap (EV_P_ ev_signal *sw, 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_priority (sw)); /* need to do it *now* */
928 w->rpid = pid;
929 w->rstatus = status;
930 ev_feed_event (EV_A_ (W)w, EV_CHILD);
931 }
932 }
933}
511 934
512#ifndef WCONTINUED 935#ifndef WCONTINUED
513# define WCONTINUED 0 936# define WCONTINUED 0
514#endif 937#endif
515 938
516static void 939static void
517child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
518{
519 struct ev_child *w;
520
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid)
523 {
524 w->priority = sw->priority; /* need to do it *now* */
525 w->rpid = pid;
526 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD);
528 }
529}
530
531static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 940childcb (EV_P_ ev_signal *sw, int revents)
533{ 941{
534 int pid, status; 942 int pid, status;
535 943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 946 if (!WCONTINUED
947 || errno != EINVAL
948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
949 return;
950
538 /* make sure we are called again until all childs have been reaped */ 951 /* make sure we are called again until all childs have been reaped */
952 /* we need to do it this way so that the callback gets called before we continue */
539 event (EV_A_ (W)sw, EV_SIGNAL); 953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 954
541 child_reap (EV_A_ sw, pid, pid, status); 955 child_reap (EV_A_ sw, pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 957 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
543 }
544} 958}
545 959
546#endif 960#endif
547 961
548/*****************************************************************************/ 962/*****************************************************************************/
549 963
964#if EV_USE_PORT
965# include "ev_port.c"
966#endif
550#if EV_USE_KQUEUE 967#if EV_USE_KQUEUE
551# include "ev_kqueue.c" 968# include "ev_kqueue.c"
552#endif 969#endif
553#if EV_USE_EPOLL 970#if EV_USE_EPOLL
554# include "ev_epoll.c" 971# include "ev_epoll.c"
555#endif 972#endif
556#if EV_USEV_POLL 973#if EV_USE_POLL
557# include "ev_poll.c" 974# include "ev_poll.c"
558#endif 975#endif
559#if EV_USE_SELECT 976#if EV_USE_SELECT
560# include "ev_select.c" 977# include "ev_select.c"
561#endif 978#endif
… …
571{ 988{
572 return EV_VERSION_MINOR; 989 return EV_VERSION_MINOR;
573} 990}
574 991
575/* return true if we are running with elevated privileges and should ignore env variables */ 992/* return true if we are running with elevated privileges and should ignore env variables */
576static int 993int inline_size
577enable_secure (void) 994enable_secure (void)
578{ 995{
579#ifdef WIN32 996#ifdef _WIN32
580 return 0; 997 return 0;
581#else 998#else
582 return getuid () != geteuid () 999 return getuid () != geteuid ()
583 || getgid () != getegid (); 1000 || getgid () != getegid ();
584#endif 1001#endif
585} 1002}
586 1003
587int 1004unsigned int
588ev_method (EV_P) 1005ev_supported_backends (void)
589{ 1006{
590 return method; 1007 unsigned int flags = 0;
591}
592 1008
593int 1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594ev_init (EV_P_ int methods) 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)
595{ 1020{
596 if (!method) 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)
597 { 1076 {
598#if EV_USE_MONOTONIC 1077#if EV_USE_MONOTONIC
599 { 1078 {
600 struct timespec ts; 1079 struct timespec ts;
601 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602 have_monotonic = 1; 1081 have_monotonic = 1;
603 } 1082 }
604#endif 1083#endif
605 1084
606 rt_now = ev_time (); 1085 ev_rt_now = ev_time ();
607 mn_now = get_clock (); 1086 mn_now = get_clock ();
608 now_floor = mn_now; 1087 now_floor = mn_now;
609 diff = rt_now - mn_now; 1088 rtmn_diff = ev_rt_now - mn_now;
610 1089
611 if (pipe (sigpipe)) 1090 io_blocktime = 0.;
612 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
613 1098
614 if (methods == EVMETHOD_AUTO) 1099 /* pid check not overridable via env */
615 if (!enable_secure () && getenv ("LIBmethodS")) 1100#ifndef _WIN32
616 methods = atoi (getenv ("LIBmethodS")); 1101 if (flags & EVFLAG_FORKCHECK)
617 else 1102 curpid = getpid ();
618 methods = EVMETHOD_ANY; 1103#endif
619 1104
620 method = 0; 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
621#if EV_USE_KQUEUE 1116#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623#endif 1118#endif
624#if EV_USE_EPOLL 1119#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626#endif 1121#endif
627#if EV_USEV_POLL 1122#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629#endif 1124#endif
630#if EV_USE_SELECT 1125#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632#endif 1127#endif
633 1128
634 if (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))
635 { 1290 {
636 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A);
639
640#ifndef WIN32 1291#ifndef _WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 1293 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 1294 ev_signal_start (EV_A_ &childev);
1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 1296#endif
645 } 1297 }
1298 else
1299 ev_default_loop_ptr = 0;
646 } 1300 }
647 1301
648 return 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 */
649} 1329}
650 1330
651/*****************************************************************************/ 1331/*****************************************************************************/
652 1332
653void 1333void
654ev_fork_prepare (void) 1334ev_invoke (EV_P_ void *w, int revents)
655{ 1335{
656 /* nop */ 1336 EV_CB_INVOKE ((W)w, revents);
657} 1337}
658 1338
659void 1339void inline_speed
660ev_fork_parent (void)
661{
662 /* nop */
663}
664
665void
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif
672
673 ev_io_stop (&sigev);
674 close (sigpipe [0]);
675 close (sigpipe [1]);
676 pipe (sigpipe);
677 siginit ();
678}
679
680/*****************************************************************************/
681
682static void
683call_pending (EV_P) 1340call_pending (EV_P)
684{ 1341{
685 int pri; 1342 int pri;
686 1343
687 for (pri = NUMPRI; pri--; ) 1344 for (pri = NUMPRI; pri--; )
688 while (pendingcnt [pri]) 1345 while (pendingcnt [pri])
689 { 1346 {
690 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691 1348
692 if (p->w) 1349 if (expect_true (p->w))
693 { 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
694 p->w->pending = 0; 1353 p->w->pending = 0;
695 p->w->cb (EV_A_ p->w, p->events); 1354 EV_CB_INVOKE (p->w, p->events);
696 } 1355 }
697 } 1356 }
698} 1357}
699 1358
700static void 1359void inline_size
701timers_reify (EV_P) 1360timers_reify (EV_P)
702{ 1361{
703 while (timercnt && timers [0]->at <= mn_now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 1363 {
705 struct ev_timer *w = timers [0]; 1364 ev_timer *w = (ev_timer *)timers [0];
1365
1366 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
706 1367
707 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
708 if (w->repeat) 1369 if (w->repeat)
709 { 1370 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1371 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1372
711 w->at = mn_now + w->repeat; 1373 ((WT)w)->at += w->repeat;
1374 if (((WT)w)->at < mn_now)
1375 ((WT)w)->at = mn_now;
1376
712 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
713 } 1378 }
714 else 1379 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 1381
717 event ((W)w, EV_TIMEOUT); 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718 } 1383 }
719} 1384}
720 1385
721static void 1386#if EV_PERIODIC_ENABLE
1387void inline_size
722periodics_reify (EV_P) 1388periodics_reify (EV_P)
723{ 1389{
724 while (periodiccnt && periodics [0]->at <= rt_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
725 { 1391 {
726 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)));*/
727 1395
728 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
729 if (w->interval) 1397 if (w->reschedule_cb)
730 { 1398 {
1399 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1400 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1401 downheap (periodics, periodiccnt, 0);
1402 }
1403 else if (w->interval)
1404 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 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;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1407 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 1408 downheap (periodics, periodiccnt, 0);
734 } 1409 }
735 else 1410 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 1412
738 event (EV_A_ (W)w, EV_PERIODIC); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739 } 1414 }
740} 1415}
741 1416
742static void 1417static void noinline
743periodics_reschedule (EV_P_ ev_tstamp diff) 1418periodics_reschedule (EV_P)
744{ 1419{
745 int i; 1420 int i;
746 1421
747 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
749 { 1424 {
750 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
751 1426
1427 if (w->reschedule_cb)
1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
752 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--; )
753 { 1448 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1449 if (pendingcnt [pri])
1450 break;
755 1451
756 if (fabs (diff) >= 1e-4) 1452 if (idlecnt [pri])
757 { 1453 {
758 ev_periodic_stop (EV_A_ w); 1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
759 ev_periodic_start (EV_A_ w); 1455 break;
760
761 i = 0; /* restart loop, inefficient, but time jumps should be rare */
762 } 1456 }
763 } 1457 }
764 } 1458 }
765} 1459}
1460#endif
766 1461
767inline int 1462void inline_speed
768time_update_monotonic (EV_P) 1463time_update (EV_P_ ev_tstamp max_block)
769{
770 mn_now = get_clock ();
771
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 {
774 rt_now = mn_now + diff;
775 return 0;
776 }
777 else
778 {
779 now_floor = mn_now;
780 rt_now = ev_time ();
781 return 1;
782 }
783}
784
785static void
786time_update (EV_P)
787{ 1464{
788 int i; 1465 int i;
789 1466
790#if EV_USE_MONOTONIC 1467#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 1468 if (expect_true (have_monotonic))
792 { 1469 {
793 if (time_update_monotonic (EV_A)) 1470 ev_tstamp odiff = rtmn_diff;
1471
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))
794 { 1477 {
795 ev_tstamp odiff = diff; 1478 ev_rt_now = rtmn_diff + mn_now;
796 1479 return;
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 {
799 diff = rt_now - mn_now;
800
801 if (fabs (odiff - diff) < MIN_TIMEJUMP)
802 return; /* all is well */
803
804 rt_now = ev_time ();
805 mn_now = get_clock ();
806 now_floor = mn_now;
807 }
808
809 periodics_reschedule (EV_A_ diff - odiff);
810 /* no timer adjustment, as the monotonic clock doesn't jump */
811 } 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 {
1495 rtmn_diff = ev_rt_now - mn_now;
1496
1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1498 return; /* all is well */
1499
1500 ev_rt_now = ev_time ();
1501 mn_now = get_clock ();
1502 now_floor = mn_now;
1503 }
1504
1505# if EV_PERIODIC_ENABLE
1506 periodics_reschedule (EV_A);
1507# endif
1508 /* no timer adjustment, as the monotonic clock doesn't jump */
1509 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
812 } 1510 }
813 else 1511 else
814#endif 1512#endif
815 { 1513 {
816 rt_now = ev_time (); 1514 ev_rt_now = ev_time ();
817 1515
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1516 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
819 { 1517 {
1518#if EV_PERIODIC_ENABLE
820 periodics_reschedule (EV_A_ rt_now - mn_now); 1519 periodics_reschedule (EV_A);
821 1520#endif
822 /* 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 */
823 for (i = 0; i < timercnt; ++i) 1522 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
825 } 1524 }
826 1525
827 mn_now = rt_now; 1526 mn_now = ev_rt_now;
828 } 1527 }
829} 1528}
830 1529
831void 1530void
832ev_ref (EV_P) 1531ev_ref (EV_P)
… …
843static int loop_done; 1542static int loop_done;
844 1543
845void 1544void
846ev_loop (EV_P_ int flags) 1545ev_loop (EV_P_ int flags)
847{ 1546{
848 double block;
849 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 */
850 1552
851 do 1553 do
852 { 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
853 /* queue check watchers (and execute them) */ 1574 /* queue prepare watchers (and execute them) */
854 if (expect_false (preparecnt)) 1575 if (expect_false (preparecnt))
855 { 1576 {
856 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857 call_pending (EV_A); 1578 call_pending (EV_A);
858 } 1579 }
859 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
860 /* update fd-related kernel structures */ 1588 /* update fd-related kernel structures */
861 fd_reify (EV_A); 1589 fd_reify (EV_A);
862 1590
863 /* calculate blocking time */ 1591 /* calculate blocking time */
1592 {
1593 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.;
864 1595
865 /* we only need this for !monotonic clockor timers, but as we basically 1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
866 always have timers, we just calculate it always */
867#if EV_USE_MONOTONIC
868 if (expect_true (have_monotonic))
869 time_update_monotonic (EV_A);
870 else
871#endif
872 { 1597 {
873 rt_now = ev_time (); 1598 /* update time to cancel out callback processing overhead */
874 mn_now = rt_now; 1599 time_update (EV_A_ 1e100);
875 }
876 1600
877 if (flags & EVLOOP_NONBLOCK || idlecnt)
878 block = 0.;
879 else
880 {
881 block = MAX_BLOCKTIME; 1601 waittime = MAX_BLOCKTIME;
882 1602
883 if (timercnt) 1603 if (timercnt)
884 { 1604 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
886 if (block > to) block = to; 1606 if (waittime > to) waittime = to;
887 } 1607 }
888 1608
1609#if EV_PERIODIC_ENABLE
889 if (periodiccnt) 1610 if (periodiccnt)
890 { 1611 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
892 if (block > to) block = to; 1613 if (waittime > to) waittime = to;
893 } 1614 }
1615#endif
894 1616
895 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 }
896 } 1630 }
897 1631
898 method_poll (EV_A_ block); 1632 ++loop_count;
1633 backend_poll (EV_A_ waittime);
899 1634
900 /* update rt_now, do magic */ 1635 /* update ev_rt_now, do magic */
901 time_update (EV_A); 1636 time_update (EV_A_ waittime + sleeptime);
1637 }
902 1638
903 /* queue pending timers and reschedule them */ 1639 /* queue pending timers and reschedule them */
904 timers_reify (EV_A); /* relative timers called last */ 1640 timers_reify (EV_A); /* relative timers called last */
1641#if EV_PERIODIC_ENABLE
905 periodics_reify (EV_A); /* absolute timers called first */ 1642 periodics_reify (EV_A); /* absolute timers called first */
1643#endif
906 1644
1645#if EV_IDLE_ENABLE
907 /* queue idle watchers unless io or timers are pending */ 1646 /* queue idle watchers unless other events are pending */
908 if (!pendingcnt) 1647 idle_reify (EV_A);
909 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1648#endif
910 1649
911 /* queue check watchers, to be executed first */ 1650 /* queue check watchers, to be executed first */
912 if (checkcnt) 1651 if (expect_false (checkcnt))
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1653
915 call_pending (EV_A); 1654 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D 1655
917 } 1656 }
918 while (activecnt && !loop_done); 1657 while (expect_true (activecnt && !loop_done));
919 1658
920 if (loop_done != 2) 1659 if (loop_done == EVUNLOOP_ONE)
921 loop_done = 0; 1660 loop_done = EVUNLOOP_CANCEL;
922} 1661}
923 1662
924void 1663void
925ev_unloop (EV_P_ int how) 1664ev_unloop (EV_P_ int how)
926{ 1665{
927 loop_done = how; 1666 loop_done = how;
928} 1667}
929 1668
930/*****************************************************************************/ 1669/*****************************************************************************/
931 1670
932inline void 1671void inline_size
933wlist_add (WL *head, WL elem) 1672wlist_add (WL *head, WL elem)
934{ 1673{
935 elem->next = *head; 1674 elem->next = *head;
936 *head = elem; 1675 *head = elem;
937} 1676}
938 1677
939inline void 1678void inline_size
940wlist_del (WL *head, WL elem) 1679wlist_del (WL *head, WL elem)
941{ 1680{
942 while (*head) 1681 while (*head)
943 { 1682 {
944 if (*head == elem) 1683 if (*head == elem)
… …
949 1688
950 head = &(*head)->next; 1689 head = &(*head)->next;
951 } 1690 }
952} 1691}
953 1692
954inline void 1693void inline_speed
955ev_clear_pending (EV_P_ W w) 1694clear_pending (EV_P_ W w)
956{ 1695{
957 if (w->pending) 1696 if (w->pending)
958 { 1697 {
959 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1698 pendings [ABSPRI (w)][w->pending - 1].w = 0;
960 w->pending = 0; 1699 w->pending = 0;
961 } 1700 }
962} 1701}
963 1702
964inline 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
965ev_start (EV_P_ W w, int active) 1730ev_start (EV_P_ W w, int active)
966{ 1731{
967 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1732 pri_adjust (EV_A_ w);
968 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
969
970 w->active = active; 1733 w->active = active;
971 ev_ref (EV_A); 1734 ev_ref (EV_A);
972} 1735}
973 1736
974inline void 1737void inline_size
975ev_stop (EV_P_ W w) 1738ev_stop (EV_P_ W w)
976{ 1739{
977 ev_unref (EV_A); 1740 ev_unref (EV_A);
978 w->active = 0; 1741 w->active = 0;
979} 1742}
980 1743
981/*****************************************************************************/ 1744/*****************************************************************************/
982 1745
983void 1746void noinline
984ev_io_start (EV_P_ struct ev_io *w) 1747ev_io_start (EV_P_ ev_io *w)
985{ 1748{
986 int fd = w->fd; 1749 int fd = w->fd;
987 1750
988 if (ev_is_active (w)) 1751 if (expect_false (ev_is_active (w)))
989 return; 1752 return;
990 1753
991 assert (("ev_io_start called with negative fd", fd >= 0)); 1754 assert (("ev_io_start called with negative fd", fd >= 0));
992 1755
993 ev_start (EV_A_ (W)w, 1); 1756 ev_start (EV_A_ (W)w, 1);
994 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1758 wlist_add (&anfds[fd].head, (WL)w);
996 1759
997 fd_change (EV_A_ fd); 1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1761 w->events &= ~EV_IOFDSET;
998} 1762}
999 1763
1000void 1764void noinline
1001ev_io_stop (EV_P_ struct ev_io *w) 1765ev_io_stop (EV_P_ ev_io *w)
1002{ 1766{
1003 ev_clear_pending (EV_A_ (W)w); 1767 clear_pending (EV_A_ (W)w);
1004 if (!ev_is_active (w)) 1768 if (expect_false (!ev_is_active (w)))
1005 return; 1769 return;
1006 1770
1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1772
1007 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1773 wlist_del (&anfds[w->fd].head, (WL)w);
1008 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1009 1775
1010 fd_change (EV_A_ w->fd); 1776 fd_change (EV_A_ w->fd, 1);
1011} 1777}
1012 1778
1013void 1779void noinline
1014ev_timer_start (EV_P_ struct ev_timer *w) 1780ev_timer_start (EV_P_ ev_timer *w)
1015{ 1781{
1016 if (ev_is_active (w)) 1782 if (expect_false (ev_is_active (w)))
1017 return; 1783 return;
1018 1784
1019 w->at += mn_now; 1785 ((WT)w)->at += mn_now;
1020 1786
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1787 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1788
1023 ev_start (EV_A_ (W)w, ++timercnt); 1789 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1025 timers [timercnt - 1] = w; 1791 timers [timercnt - 1] = (WT)w;
1026 upheap ((WT *)timers, timercnt - 1); 1792 upheap (timers, timercnt - 1);
1027}
1028 1793
1029void 1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1795}
1796
1797void noinline
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1798ev_timer_stop (EV_P_ ev_timer *w)
1031{ 1799{
1032 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1034 return; 1802 return;
1035 1803
1036 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))
1037 { 1810 {
1038 timers [w->active - 1] = timers [timercnt]; 1811 timers [active] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1812 adjustheap (timers, timercnt, active);
1040 } 1813 }
1814 }
1041 1815
1042 w->at = w->repeat; 1816 ((WT)w)->at -= mn_now;
1043 1817
1044 ev_stop (EV_A_ (W)w); 1818 ev_stop (EV_A_ (W)w);
1045} 1819}
1046 1820
1047void 1821void noinline
1048ev_timer_again (EV_P_ struct ev_timer *w) 1822ev_timer_again (EV_P_ ev_timer *w)
1049{ 1823{
1050 if (ev_is_active (w)) 1824 if (ev_is_active (w))
1051 { 1825 {
1052 if (w->repeat) 1826 if (w->repeat)
1053 { 1827 {
1054 w->at = mn_now + w->repeat; 1828 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1829 adjustheap (timers, timercnt, ((W)w)->active - 1);
1056 } 1830 }
1057 else 1831 else
1058 ev_timer_stop (EV_A_ w); 1832 ev_timer_stop (EV_A_ w);
1059 } 1833 }
1060 else if (w->repeat) 1834 else if (w->repeat)
1835 {
1836 w->at = w->repeat;
1061 ev_timer_start (EV_A_ w); 1837 ev_timer_start (EV_A_ w);
1838 }
1062} 1839}
1063 1840
1064void 1841#if EV_PERIODIC_ENABLE
1842void noinline
1065ev_periodic_start (EV_P_ struct ev_periodic *w) 1843ev_periodic_start (EV_P_ ev_periodic *w)
1066{ 1844{
1067 if (ev_is_active (w)) 1845 if (expect_false (ev_is_active (w)))
1068 return; 1846 return;
1069 1847
1848 if (w->reschedule_cb)
1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1850 else if (w->interval)
1851 {
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1852 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071
1072 /* 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 */
1073 if (w->interval)
1074 w->at += ceil ((rt_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;
1075 1858
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1859 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1078 periodics [periodiccnt - 1] = w; 1861 periodics [periodiccnt - 1] = (WT)w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1862 upheap (periodics, periodiccnt - 1);
1080}
1081 1863
1082void 1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1865}
1866
1867void noinline
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1868ev_periodic_stop (EV_P_ ev_periodic *w)
1084{ 1869{
1085 ev_clear_pending (EV_A_ (W)w); 1870 clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1871 if (expect_false (!ev_is_active (w)))
1087 return; 1872 return;
1088 1873
1089 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))
1090 { 1880 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1881 periodics [active] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1882 adjustheap (periodics, periodiccnt, active);
1093 } 1883 }
1884 }
1094 1885
1095 ev_stop (EV_A_ (W)w); 1886 ev_stop (EV_A_ (W)w);
1096} 1887}
1888
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
1097 1897
1098#ifndef SA_RESTART 1898#ifndef SA_RESTART
1099# define SA_RESTART 0 1899# define SA_RESTART 0
1100#endif 1900#endif
1101 1901
1102void 1902void noinline
1103ev_signal_start (EV_P_ struct ev_signal *w) 1903ev_signal_start (EV_P_ ev_signal *w)
1104{ 1904{
1905#if EV_MULTIPLICITY
1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907#endif
1105 if (ev_is_active (w)) 1908 if (expect_false (ev_is_active (w)))
1106 return; 1909 return;
1107 1910
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1911 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 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
1922 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1923
1924#ifndef _WIN32
1925 sigprocmask (SIG_SETMASK, &prev, 0);
1926#endif
1927 }
1928
1110 ev_start (EV_A_ (W)w, 1); 1929 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1930 wlist_add (&signals [w->signum - 1].head, (WL)w);
1113 1931
1114 if (!w->next) 1932 if (!((WL)w)->next)
1115 { 1933 {
1934#if _WIN32
1935 signal (w->signum, sighandler);
1936#else
1116 struct sigaction sa; 1937 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1938 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1939 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1940 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1941 sigaction (w->signum, &sa, 0);
1942#endif
1121 } 1943 }
1122} 1944}
1123 1945
1124void 1946void noinline
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1947ev_signal_stop (EV_P_ ev_signal *w)
1126{ 1948{
1127 ev_clear_pending (EV_A_ (W)w); 1949 clear_pending (EV_A_ (W)w);
1128 if (!ev_is_active (w)) 1950 if (expect_false (!ev_is_active (w)))
1129 return; 1951 return;
1130 1952
1131 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1953 wlist_del (&signals [w->signum - 1].head, (WL)w);
1132 ev_stop (EV_A_ (W)w); 1954 ev_stop (EV_A_ (W)w);
1133 1955
1134 if (!signals [w->signum - 1].head) 1956 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1957 signal (w->signum, SIG_DFL);
1136} 1958}
1137 1959
1138void 1960void
1139ev_idle_start (EV_P_ struct ev_idle *w) 1961ev_child_start (EV_P_ ev_child *w)
1140{ 1962{
1963#if EV_MULTIPLICITY
1964 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1965#endif
1141 if (ev_is_active (w)) 1966 if (expect_false (ev_is_active (w)))
1142 return; 1967 return;
1143 1968
1144 ev_start (EV_A_ (W)w, ++idlecnt); 1969 ev_start (EV_A_ (W)w, 1);
1145 array_needsize (idles, idlemax, idlecnt, ); 1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1146 idles [idlecnt - 1] = w;
1147} 1971}
1148 1972
1149void 1973void
1150ev_idle_stop (EV_P_ struct ev_idle *w) 1974ev_child_stop (EV_P_ ev_child *w)
1151{ 1975{
1152 ev_clear_pending (EV_A_ (W)w); 1976 clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w)) 1977 if (expect_false (!ev_is_active (w)))
1154 return; 1978 return;
1155 1979
1156 idles [w->active - 1] = idles [--idlecnt]; 1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1157 ev_stop (EV_A_ (W)w); 1981 ev_stop (EV_A_ (W)w);
1158} 1982}
1159 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
1160void 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
1161ev_prepare_start (EV_P_ struct ev_prepare *w) 2275ev_prepare_start (EV_P_ ev_prepare *w)
1162{ 2276{
1163 if (ev_is_active (w)) 2277 if (expect_false (ev_is_active (w)))
1164 return; 2278 return;
1165 2279
1166 ev_start (EV_A_ (W)w, ++preparecnt); 2280 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, ); 2281 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1168 prepares [preparecnt - 1] = w; 2282 prepares [preparecnt - 1] = w;
1169} 2283}
1170 2284
1171void 2285void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w) 2286ev_prepare_stop (EV_P_ ev_prepare *w)
1173{ 2287{
1174 ev_clear_pending (EV_A_ (W)w); 2288 clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w)) 2289 if (expect_false (!ev_is_active (w)))
1176 return; 2290 return;
1177 2291
2292 {
2293 int active = ((W)w)->active;
1178 prepares [w->active - 1] = prepares [--preparecnt]; 2294 prepares [active - 1] = prepares [--preparecnt];
2295 ((W)prepares [active - 1])->active = active;
2296 }
2297
1179 ev_stop (EV_A_ (W)w); 2298 ev_stop (EV_A_ (W)w);
1180} 2299}
1181 2300
1182void 2301void
1183ev_check_start (EV_P_ struct ev_check *w) 2302ev_check_start (EV_P_ ev_check *w)
1184{ 2303{
1185 if (ev_is_active (w)) 2304 if (expect_false (ev_is_active (w)))
1186 return; 2305 return;
1187 2306
1188 ev_start (EV_A_ (W)w, ++checkcnt); 2307 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, ); 2308 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1190 checks [checkcnt - 1] = w; 2309 checks [checkcnt - 1] = w;
1191} 2310}
1192 2311
1193void 2312void
1194ev_check_stop (EV_P_ struct ev_check *w) 2313ev_check_stop (EV_P_ ev_check *w)
1195{ 2314{
1196 ev_clear_pending (EV_A_ (W)w); 2315 clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w)) 2316 if (expect_false (!ev_is_active (w)))
1198 return; 2317 return;
1199 2318
2319 {
2320 int active = ((W)w)->active;
1200 checks [w->active - 1] = checks [--checkcnt]; 2321 checks [active - 1] = checks [--checkcnt];
2322 ((W)checks [active - 1])->active = active;
2323 }
2324
1201 ev_stop (EV_A_ (W)w); 2325 ev_stop (EV_A_ (W)w);
1202} 2326}
1203 2327
1204void 2328#if EV_EMBED_ENABLE
1205ev_child_start (EV_P_ struct ev_child *w) 2329void noinline
2330ev_embed_sweep (EV_P_ ev_embed *w)
1206{ 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
1207 if (ev_is_active (w)) 2340 if (ev_cb (w))
2341 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2342 else
2343 ev_loop (w->other, EVLOOP_NONBLOCK);
2344}
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)))
1208 return; 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);*/
1209 2390
1210 ev_start (EV_A_ (W)w, 1); 2391 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1212} 2392}
1213 2393
1214void 2394void
1215ev_child_stop (EV_P_ struct ev_child *w) 2395ev_embed_stop (EV_P_ ev_embed *w)
1216{ 2396{
1217 ev_clear_pending (EV_A_ (W)w); 2397 clear_pending (EV_A_ (W)w);
1218 if (ev_is_active (w)) 2398 if (expect_false (!ev_is_active (w)))
1219 return; 2399 return;
1220 2400
1221 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
1222 ev_stop (EV_A_ (W)w); 2404 ev_stop (EV_A_ (W)w);
1223} 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
1224 2474
1225/*****************************************************************************/ 2475/*****************************************************************************/
1226 2476
1227struct ev_once 2477struct ev_once
1228{ 2478{
1229 struct ev_io io; 2479 ev_io io;
1230 struct ev_timer to; 2480 ev_timer to;
1231 void (*cb)(int revents, void *arg); 2481 void (*cb)(int revents, void *arg);
1232 void *arg; 2482 void *arg;
1233}; 2483};
1234 2484
1235static void 2485static void
… …
1238 void (*cb)(int revents, void *arg) = once->cb; 2488 void (*cb)(int revents, void *arg) = once->cb;
1239 void *arg = once->arg; 2489 void *arg = once->arg;
1240 2490
1241 ev_io_stop (EV_A_ &once->io); 2491 ev_io_stop (EV_A_ &once->io);
1242 ev_timer_stop (EV_A_ &once->to); 2492 ev_timer_stop (EV_A_ &once->to);
1243 free (once); 2493 ev_free (once);
1244 2494
1245 cb (revents, arg); 2495 cb (revents, arg);
1246} 2496}
1247 2497
1248static void 2498static void
1249once_cb_io (EV_P_ struct ev_io *w, int revents) 2499once_cb_io (EV_P_ ev_io *w, int revents)
1250{ 2500{
1251 once_cb (EV_A_ (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);
1252} 2502}
1253 2503
1254static void 2504static void
1255once_cb_to (EV_P_ struct ev_timer *w, int revents) 2505once_cb_to (EV_P_ ev_timer *w, int revents)
1256{ 2506{
1257 once_cb (EV_A_ (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);
1258} 2508}
1259 2509
1260void 2510void
1261ev_once (EV_P_ 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)
1262{ 2512{
1263 struct ev_once *once = malloc (sizeof (struct ev_once)); 2513 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1264 2514
1265 if (!once) 2515 if (expect_false (!once))
2516 {
1266 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2517 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1267 else 2518 return;
1268 { 2519 }
2520
1269 once->cb = cb; 2521 once->cb = cb;
1270 once->arg = arg; 2522 once->arg = arg;
1271 2523
1272 ev_watcher_init (&once->io, once_cb_io); 2524 ev_init (&once->io, once_cb_io);
1273 if (fd >= 0) 2525 if (fd >= 0)
1274 { 2526 {
1275 ev_io_set (&once->io, fd, events); 2527 ev_io_set (&once->io, fd, events);
1276 ev_io_start (EV_A_ &once->io); 2528 ev_io_start (EV_A_ &once->io);
1277 } 2529 }
1278 2530
1279 ev_watcher_init (&once->to, once_cb_to); 2531 ev_init (&once->to, once_cb_to);
1280 if (timeout >= 0.) 2532 if (timeout >= 0.)
1281 { 2533 {
1282 ev_timer_set (&once->to, timeout, 0.); 2534 ev_timer_set (&once->to, timeout, 0.);
1283 ev_timer_start (EV_A_ &once->to); 2535 ev_timer_start (EV_A_ &once->to);
1284 }
1285 }
1286}
1287
1288/*****************************************************************************/
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 { 2536 }
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif
1344
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364} 2537}
1365 2538
2539#if EV_MULTIPLICITY
2540 #include "ev_wrap.h"
1366#endif 2541#endif
1367 2542
2543#ifdef __cplusplus
2544}
2545#endif
1368 2546
1369
1370

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