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Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.216 by root, Sat Mar 8 07:04:55 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
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 */
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 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
119 302
120/*****************************************************************************/ 303/*****************************************************************************/
121 304
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
122typedef struct 355typedef struct
123{ 356{
124 struct ev_watcher_list *head; 357 WL head;
125 unsigned char events; 358 unsigned char events;
126 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
127} ANFD; 363} ANFD;
128 364
129typedef struct 365typedef struct
130{ 366{
131 W w; 367 W w;
132 int events; 368 int events;
133} ANPENDING; 369} ANPENDING;
134 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
135#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
136 379
137struct ev_loop 380 struct ev_loop
138{ 381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
140# include "ev_vars.h" 385 #include "ev_vars.h"
141};
142# undef VAR 386 #undef VAR
387 };
143# include "ev_wrap.h" 388 #include "ev_wrap.h"
389
390 static struct ev_loop default_loop_struct;
391 struct ev_loop *ev_default_loop_ptr;
144 392
145#else 393#else
146 394
395 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 397 #include "ev_vars.h"
149# undef VAR 398 #undef VAR
399
400 static int ev_default_loop_ptr;
150 401
151#endif 402#endif
152 403
153/*****************************************************************************/ 404/*****************************************************************************/
154 405
155inline ev_tstamp 406ev_tstamp
156ev_time (void) 407ev_time (void)
157{ 408{
158#if EV_USE_REALTIME 409#if EV_USE_REALTIME
159 struct timespec ts; 410 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
… …
164 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
165 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
166#endif 417#endif
167} 418}
168 419
169inline ev_tstamp 420ev_tstamp inline_size
170get_clock (void) 421get_clock (void)
171{ 422{
172#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
173 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
174 { 425 {
… …
179#endif 430#endif
180 431
181 return ev_time (); 432 return ev_time ();
182} 433}
183 434
435#if EV_MULTIPLICITY
184ev_tstamp 436ev_tstamp
185ev_now (EV_P) 437ev_now (EV_P)
186{ 438{
187 return rt_now; 439 return ev_rt_now;
188} 440}
441#endif
189 442
190#define array_roundsize(base,n) ((n) | 4 & ~3) 443void
191 444ev_sleep (ev_tstamp delay)
192#define array_needsize(base,cur,cnt,init) \ 445{
193 if (expect_false ((cnt) > cur)) \ 446 if (delay > 0.)
194 { \
195 int newcnt = cur; \
196 do \
197 { \
198 newcnt = array_roundsize (base, newcnt << 1); \
199 } \
200 while ((cnt) > newcnt); \
201 \
202 base = realloc (base, sizeof (*base) * (newcnt)); \
203 init (base + cur, newcnt - cur); \
204 cur = newcnt; \
205 } 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}
206 467
207/*****************************************************************************/ 468/*****************************************************************************/
208 469
209static void 470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
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
210anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
211{ 552{
212 while (count--) 553 while (count--)
213 { 554 {
214 base->head = 0; 555 base->head = 0;
… …
217 558
218 ++base; 559 ++base;
219 } 560 }
220} 561}
221 562
222static void 563void inline_speed
223event (EV_P_ W w, int events)
224{
225 if (w->pending)
226 {
227 pendings [ABSPRI (w)][w->pending - 1].events |= events;
228 return;
229 }
230
231 w->pending = ++pendingcnt [ABSPRI (w)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233 pendings [ABSPRI (w)][w->pending - 1].w = w;
234 pendings [ABSPRI (w)][w->pending - 1].events = events;
235}
236
237static void
238queue_events (EV_P_ W *events, int eventcnt, int type)
239{
240 int i;
241
242 for (i = 0; i < eventcnt; ++i)
243 event (EV_A_ events [i], type);
244}
245
246static void
247fd_event (EV_P_ int fd, int events) 564fd_event (EV_P_ int fd, int revents)
248{ 565{
249 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 567 ev_io *w;
251 568
252 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)
253 { 570 {
254 int ev = w->events & events; 571 int ev = w->events & revents;
255 572
256 if (ev) 573 if (ev)
257 event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
258 } 575 }
259} 576}
260 577
261/*****************************************************************************/ 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}
262 584
263static void 585void inline_size
264fd_reify (EV_P) 586fd_reify (EV_P)
265{ 587{
266 int i; 588 int i;
267 589
268 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
269 { 591 {
270 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
271 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
272 struct ev_io *w; 594 ev_io *w;
273 595
274 int events = 0; 596 unsigned char events = 0;
275 597
276 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)
277 events |= w->events; 599 events |= (unsigned char)w->events;
278 600
279 anfd->reify = 0; 601#if EV_SELECT_IS_WINSOCKET
280 602 if (events)
281 if (anfd->events != events)
282 { 603 {
283 method_modify (EV_A_ fd, anfd->events, events); 604 unsigned long argp;
284 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));
285 } 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 }
286 } 624 }
287 625
288 fdchangecnt = 0; 626 fdchangecnt = 0;
289} 627}
290 628
291static void 629void inline_size
292fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
293{ 631{
294 if (anfds [fd].reify || fdchangecnt < 0) 632 unsigned char reify = anfds [fd].reify;
295 return;
296
297 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
298 634
635 if (expect_true (!reify))
636 {
299 ++fdchangecnt; 637 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
302} 641}
303 642
304static void 643void inline_speed
305fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
306{ 645{
307 struct ev_io *w; 646 ev_io *w;
308 647
309 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
310 { 649 {
311 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
312 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);
313 } 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
314} 663}
315 664
316/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
317static void 666static void noinline
318fd_ebadf (EV_P) 667fd_ebadf (EV_P)
319{ 668{
320 int fd; 669 int fd;
321 670
322 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 672 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
326} 675}
327 676
328/* 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 */
329static void 678static void noinline
330fd_enomem (EV_P) 679fd_enomem (EV_P)
331{ 680{
332 int fd = anfdmax; 681 int fd;
333 682
334 while (fd--) 683 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 684 if (anfds [fd].events)
336 { 685 {
337 close (fd);
338 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
339 return; 687 return;
340 } 688 }
341} 689}
342 690
343/* susually called after fork if method needs to re-arm all fds from scratch */ 691/* usually called after fork if backend needs to re-arm all fds from scratch */
344static void 692static void noinline
345fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
346{ 694{
347 int fd; 695 int fd;
348 696
349 /* this should be highly optimised to not do anything but set a flag */
350 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
351 if (anfds [fd].events) 698 if (anfds [fd].events)
352 { 699 {
353 anfds [fd].events = 0; 700 anfds [fd].events = 0;
354 fd_change (fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
355 } 702 }
356} 703}
357 704
358/*****************************************************************************/ 705/*****************************************************************************/
359 706
360static void 707void inline_speed
361upheap (WT *heap, int k) 708upheap (WT *heap, int k)
362{ 709{
363 WT w = heap [k]; 710 WT w = heap [k];
364 711
365 while (k && heap [k >> 1]->at > w->at) 712 while (k)
366 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
367 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
368 heap [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
369 k >>= 1; 721 k = p;
370 } 722 }
371 723
372 heap [k] = w; 724 heap [k] = w;
373 heap [k]->active = k + 1; 725 ((W)heap [k])->active = k + 1;
374
375} 726}
376 727
377static void 728void inline_speed
378downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
379{ 730{
380 WT w = heap [k]; 731 WT w = heap [k];
381 732
382 while (k < (N >> 1)) 733 for (;;)
383 { 734 {
384 int j = k << 1; 735 int c = (k << 1) + 1;
385 736
386 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
387 ++j;
388
389 if (w->at <= heap [j]->at)
390 break; 738 break;
391 739
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
392 heap [k] = heap [j]; 746 heap [k] = heap [c];
393 heap [k]->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
394 k = j; 749 k = c;
395 } 750 }
396 751
397 heap [k] = w; 752 heap [k] = w;
398 heap [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);
399} 761}
400 762
401/*****************************************************************************/ 763/*****************************************************************************/
402 764
403typedef struct 765typedef struct
404{ 766{
405 struct ev_watcher_list *head; 767 WL head;
406 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
407} ANSIG; 769} ANSIG;
408 770
409static ANSIG *signals; 771static ANSIG *signals;
410static int signalmax; 772static int signalmax;
411 773
412static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
413static sig_atomic_t volatile gotsig;
414 775
415static void 776void inline_size
416signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
417{ 778{
418 while (count--) 779 while (count--)
419 { 780 {
420 base->head = 0; 781 base->head = 0;
… …
422 783
423 ++base; 784 ++base;
424 } 785 }
425} 786}
426 787
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
427static void 869static void
428sighandler (int signum) 870sighandler (int signum)
429{ 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
430 signals [signum - 1].gotsig = 1; 880 signals [signum - 1].gotsig = 1;
431 881 evpipe_write (EV_A_ &gotsig);
432 if (!gotsig)
433 {
434 int old_errno = errno;
435 gotsig = 1;
436 write (sigpipe [1], &signum, 1);
437 errno = old_errno;
438 }
439} 882}
440 883
441static void 884void noinline
442sigcb (EV_P_ struct ev_io *iow, int revents) 885ev_feed_signal_event (EV_P_ int signum)
443{ 886{
444 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
445 int signum; 893 --signum;
446 894
447 read (sigpipe [0], &revents, 1); 895 if (signum < 0 || signum >= signalmax)
448 gotsig = 0; 896 return;
449 897
450 for (signum = signalmax; signum--; )
451 if (signals [signum].gotsig)
452 {
453 signals [signum].gotsig = 0; 898 signals [signum].gotsig = 0;
454 899
455 for (w = signals [signum].head; w; w = w->next) 900 for (w = signals [signum].head; w; w = w->next)
456 event (EV_A_ (W)w, EV_SIGNAL); 901 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
457 }
458}
459
460static void
461siginit (EV_P)
462{
463#ifndef WIN32
464 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
465 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467 /* rather than sort out wether we really need nb, set it */
468 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470#endif
471
472 ev_io_set (&sigev, sigpipe [0], EV_READ);
473 ev_io_start (EV_A_ &sigev);
474 ev_unref (EV_A); /* child watcher should not keep loop alive */
475} 902}
476 903
477/*****************************************************************************/ 904/*****************************************************************************/
478 905
906static WL childs [EV_PID_HASHSIZE];
907
479#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_ 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}
480 934
481#ifndef WCONTINUED 935#ifndef WCONTINUED
482# define WCONTINUED 0 936# define WCONTINUED 0
483#endif 937#endif
484 938
485static void 939static void
486child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
487{
488 struct ev_child *w;
489
490 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
491 if (w->pid == pid || !w->pid)
492 {
493 w->priority = sw->priority; /* need to do it *now* */
494 w->rpid = pid;
495 w->rstatus = status;
496 event (EV_A_ (W)w, EV_CHILD);
497 }
498}
499
500static void
501childcb (EV_P_ struct ev_signal *sw, int revents) 940childcb (EV_P_ ev_signal *sw, int revents)
502{ 941{
503 int pid, status; 942 int pid, status;
504 943
944 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 945 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506 { 946 if (!WCONTINUED
947 || errno != EINVAL
948 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
949 return;
950
507 /* make sure we are called again until all childs have been reaped */ 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 */
508 event (EV_A_ (W)sw, EV_SIGNAL); 953 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509 954
510 child_reap (EV_A_ sw, pid, pid, status); 955 child_reap (EV_A_ pid, pid, status);
956 if (EV_PID_HASHSIZE > 1)
511 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 957 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512 }
513} 958}
514 959
515#endif 960#endif
516 961
517/*****************************************************************************/ 962/*****************************************************************************/
518 963
964#if EV_USE_PORT
965# include "ev_port.c"
966#endif
519#if EV_USE_KQUEUE 967#if EV_USE_KQUEUE
520# include "ev_kqueue.c" 968# include "ev_kqueue.c"
521#endif 969#endif
522#if EV_USE_EPOLL 970#if EV_USE_EPOLL
523# include "ev_epoll.c" 971# include "ev_epoll.c"
524#endif 972#endif
525#if EV_USEV_POLL 973#if EV_USE_POLL
526# include "ev_poll.c" 974# include "ev_poll.c"
527#endif 975#endif
528#if EV_USE_SELECT 976#if EV_USE_SELECT
529# include "ev_select.c" 977# include "ev_select.c"
530#endif 978#endif
… …
540{ 988{
541 return EV_VERSION_MINOR; 989 return EV_VERSION_MINOR;
542} 990}
543 991
544/* 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 */
545static int 993int inline_size
546enable_secure (void) 994enable_secure (void)
547{ 995{
548#ifdef WIN32 996#ifdef _WIN32
549 return 0; 997 return 0;
550#else 998#else
551 return getuid () != geteuid () 999 return getuid () != geteuid ()
552 || getgid () != getegid (); 1000 || getgid () != getegid ();
553#endif 1001#endif
554} 1002}
555 1003
556int 1004unsigned int
557ev_method (EV_P) 1005ev_supported_backends (void)
558{ 1006{
559 return method; 1007 unsigned int flags = 0;
560}
561 1008
562static void 1009 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563loop_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)
564{ 1020{
565 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)
566 { 1076 {
567#if EV_USE_MONOTONIC 1077#if EV_USE_MONOTONIC
568 { 1078 {
569 struct timespec ts; 1079 struct timespec ts;
570 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1080 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571 have_monotonic = 1; 1081 have_monotonic = 1;
572 } 1082 }
573#endif 1083#endif
574 1084
575 rt_now = ev_time (); 1085 ev_rt_now = ev_time ();
576 mn_now = get_clock (); 1086 mn_now = get_clock ();
577 now_floor = mn_now; 1087 now_floor = mn_now;
578 rtmn_diff = rt_now - mn_now; 1088 rtmn_diff = ev_rt_now - mn_now;
579 1089
580 if (methods == EVMETHOD_AUTO) 1090 io_blocktime = 0.;
581 if (!enable_secure () && getenv ("LIBEV_METHODS")) 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
1098
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"))
582 methods = atoi (getenv ("LIBEV_METHODS")); 1108 flags = atoi (getenv ("LIBEV_FLAGS"));
583 else
584 methods = EVMETHOD_ANY;
585 1109
586 method = 0; 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
587#if EV_USE_KQUEUE 1116#if EV_USE_KQUEUE
588 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1117 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589#endif 1118#endif
590#if EV_USE_EPOLL 1119#if EV_USE_EPOLL
591 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1120 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592#endif 1121#endif
593#if EV_USEV_POLL 1122#if EV_USE_POLL
594 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1123 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595#endif 1124#endif
596#if EV_USE_SELECT 1125#if EV_USE_SELECT
597 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1126 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598#endif 1127#endif
599 }
600}
601 1128
602void 1129 ev_init (&pipeev, pipecb);
1130 ev_set_priority (&pipeev, EV_MAXPRI);
1131 }
1132}
1133
1134static void noinline
603loop_destroy (EV_P) 1135loop_destroy (EV_P)
604{ 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
605#if EV_USE_KQUEUE 1159#if EV_USE_KQUEUE
606 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1160 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607#endif 1161#endif
608#if EV_USE_EPOLL 1162#if EV_USE_EPOLL
609 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1163 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610#endif 1164#endif
611#if EV_USEV_POLL 1165#if EV_USE_POLL
612 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1166 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613#endif 1167#endif
614#if EV_USE_SELECT 1168#if EV_USE_SELECT
615 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1169 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616#endif 1170#endif
617 1171
618 method = 0; 1172 for (i = NUMPRI; i--; )
619 /*TODO*/ 1173 {
620} 1174 array_free (pending, [i]);
1175#if EV_IDLE_ENABLE
1176 array_free (idle, [i]);
1177#endif
1178 }
621 1179
622void 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
623loop_fork (EV_P) 1203loop_fork (EV_P)
624{ 1204{
625 /*TODO*/ 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
626#if EV_USE_EPOLL 1211#if EV_USE_EPOLL
627 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1212 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628#endif 1213#endif
629#if EV_USE_KQUEUE 1214#if EV_USE_INOTIFY
630 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1215 infy_fork (EV_A);
631#endif 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;
632} 1238}
633 1239
634#if EV_MULTIPLICITY 1240#if EV_MULTIPLICITY
635struct ev_loop * 1241struct ev_loop *
636ev_loop_new (int methods) 1242ev_loop_new (unsigned int flags)
637{ 1243{
638 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1244 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639 1245
1246 memset (loop, 0, sizeof (struct ev_loop));
1247
640 loop_init (EV_A_ methods); 1248 loop_init (EV_A_ flags);
641 1249
642 if (ev_methods (EV_A)) 1250 if (ev_backend (EV_A))
643 return loop; 1251 return loop;
644 1252
645 return 0; 1253 return 0;
646} 1254}
647 1255
648void 1256void
649ev_loop_destroy (EV_P) 1257ev_loop_destroy (EV_P)
650{ 1258{
651 loop_destroy (EV_A); 1259 loop_destroy (EV_A);
652 free (loop); 1260 ev_free (loop);
653} 1261}
654 1262
655void 1263void
656ev_loop_fork (EV_P) 1264ev_loop_fork (EV_P)
657{ 1265{
658 loop_fork (EV_A); 1266 postfork = 1; /* must be in line with ev_default_fork */
659} 1267}
660 1268
661#endif 1269#endif
662 1270
663#if EV_MULTIPLICITY 1271#if EV_MULTIPLICITY
664struct ev_loop default_loop_struct;
665static struct ev_loop *default_loop;
666
667struct ev_loop * 1272struct ev_loop *
1273ev_default_loop_init (unsigned int flags)
668#else 1274#else
669static int default_loop;
670
671int 1275int
1276ev_default_loop (unsigned int flags)
672#endif 1277#endif
673ev_default_loop (int methods)
674{ 1278{
675 if (sigpipe [0] == sigpipe [1])
676 if (pipe (sigpipe))
677 return 0;
678
679 if (!default_loop) 1279 if (!ev_default_loop_ptr)
680 { 1280 {
681#if EV_MULTIPLICITY 1281#if EV_MULTIPLICITY
682 struct ev_loop *loop = default_loop = &default_loop_struct; 1282 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683#else 1283#else
684 default_loop = 1; 1284 ev_default_loop_ptr = 1;
685#endif 1285#endif
686 1286
687 loop_init (EV_A_ methods); 1287 loop_init (EV_A_ flags);
688 1288
689 if (ev_method (EV_A)) 1289 if (ev_backend (EV_A))
690 { 1290 {
691 ev_watcher_init (&sigev, sigcb);
692 ev_set_priority (&sigev, EV_MAXPRI);
693 siginit (EV_A);
694
695#ifndef WIN32 1291#ifndef _WIN32
696 ev_signal_init (&childev, childcb, SIGCHLD); 1292 ev_signal_init (&childev, childcb, SIGCHLD);
697 ev_set_priority (&childev, EV_MAXPRI); 1293 ev_set_priority (&childev, EV_MAXPRI);
698 ev_signal_start (EV_A_ &childev); 1294 ev_signal_start (EV_A_ &childev);
699 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1295 ev_unref (EV_A); /* child watcher should not keep loop alive */
700#endif 1296#endif
701 } 1297 }
702 else 1298 else
703 default_loop = 0; 1299 ev_default_loop_ptr = 0;
704 } 1300 }
705 1301
706 return default_loop; 1302 return ev_default_loop_ptr;
707} 1303}
708 1304
709void 1305void
710ev_default_destroy (void) 1306ev_default_destroy (void)
711{ 1307{
712#if EV_MULTIPLICITY 1308#if EV_MULTIPLICITY
713 struct ev_loop *loop = default_loop; 1309 struct ev_loop *loop = ev_default_loop_ptr;
714#endif 1310#endif
715 1311
1312#ifndef _WIN32
716 ev_ref (EV_A); /* child watcher */ 1313 ev_ref (EV_A); /* child watcher */
717 ev_signal_stop (EV_A_ &childev); 1314 ev_signal_stop (EV_A_ &childev);
718 1315#endif
719 ev_ref (EV_A); /* signal watcher */
720 ev_io_stop (EV_A_ &sigev);
721
722 close (sigpipe [0]); sigpipe [0] = 0;
723 close (sigpipe [1]); sigpipe [1] = 0;
724 1316
725 loop_destroy (EV_A); 1317 loop_destroy (EV_A);
726} 1318}
727 1319
728void 1320void
729ev_default_fork (EV_P) 1321ev_default_fork (void)
730{ 1322{
731 loop_fork (EV_A); 1323#if EV_MULTIPLICITY
1324 struct ev_loop *loop = ev_default_loop_ptr;
1325#endif
732 1326
733 ev_io_stop (EV_A_ &sigev); 1327 if (backend)
734 close (sigpipe [0]); 1328 postfork = 1; /* must be in line with ev_loop_fork */
735 close (sigpipe [1]);
736 pipe (sigpipe);
737
738 ev_ref (EV_A); /* signal watcher */
739 siginit (EV_A);
740} 1329}
741 1330
742/*****************************************************************************/ 1331/*****************************************************************************/
743 1332
744static void 1333void
1334ev_invoke (EV_P_ void *w, int revents)
1335{
1336 EV_CB_INVOKE ((W)w, revents);
1337}
1338
1339void inline_speed
745call_pending (EV_P) 1340call_pending (EV_P)
746{ 1341{
747 int pri; 1342 int pri;
748 1343
749 for (pri = NUMPRI; pri--; ) 1344 for (pri = NUMPRI; pri--; )
750 while (pendingcnt [pri]) 1345 while (pendingcnt [pri])
751 { 1346 {
752 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1347 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753 1348
754 if (p->w) 1349 if (expect_true (p->w))
755 { 1350 {
1351 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
756 p->w->pending = 0; 1353 p->w->pending = 0;
757 p->w->cb (EV_A_ p->w, p->events); 1354 EV_CB_INVOKE (p->w, p->events);
758 } 1355 }
759 } 1356 }
760} 1357}
761 1358
762static void 1359void inline_size
763timers_reify (EV_P) 1360timers_reify (EV_P)
764{ 1361{
765 while (timercnt && timers [0]->at <= mn_now) 1362 while (timercnt && ((WT)timers [0])->at <= mn_now)
766 { 1363 {
767 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)));*/
768 1367
769 /* first reschedule or stop timer */ 1368 /* first reschedule or stop timer */
770 if (w->repeat) 1369 if (w->repeat)
771 { 1370 {
772 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
773 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
774 downheap ((WT *)timers, timercnt, 0); 1377 downheap (timers, timercnt, 0);
775 } 1378 }
776 else 1379 else
777 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1380 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778 1381
779 event (EV_A_ (W)w, EV_TIMEOUT); 1382 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780 } 1383 }
781} 1384}
782 1385
783static void 1386#if EV_PERIODIC_ENABLE
1387void inline_size
784periodics_reify (EV_P) 1388periodics_reify (EV_P)
785{ 1389{
786 while (periodiccnt && periodics [0]->at <= rt_now) 1390 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787 { 1391 {
788 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)));*/
789 1395
790 /* first reschedule or stop timer */ 1396 /* first reschedule or stop timer */
791 if (w->interval) 1397 if (w->reschedule_cb)
792 { 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 {
793 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;
794 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));
795 downheap ((WT *)periodics, periodiccnt, 0); 1408 downheap (periodics, periodiccnt, 0);
796 } 1409 }
797 else 1410 else
798 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1411 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799 1412
800 event (EV_A_ (W)w, EV_PERIODIC); 1413 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801 } 1414 }
802} 1415}
803 1416
804static void 1417static void noinline
805periodics_reschedule (EV_P) 1418periodics_reschedule (EV_P)
806{ 1419{
807 int i; 1420 int i;
808 1421
809 /* adjust periodics after time jump */ 1422 /* adjust periodics after time jump */
810 for (i = 0; i < periodiccnt; ++i) 1423 for (i = 0; i < periodiccnt; ++i)
811 { 1424 {
812 struct ev_periodic *w = periodics [i]; 1425 ev_periodic *w = (ev_periodic *)periodics [i];
813 1426
1427 if (w->reschedule_cb)
1428 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814 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--; )
815 { 1448 {
816 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1449 if (pendingcnt [pri])
1450 break;
817 1451
818 if (fabs (diff) >= 1e-4) 1452 if (idlecnt [pri])
819 { 1453 {
820 ev_periodic_stop (EV_A_ w); 1454 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
821 ev_periodic_start (EV_A_ w); 1455 break;
822
823 i = 0; /* restart loop, inefficient, but time jumps should be rare */
824 } 1456 }
825 } 1457 }
826 } 1458 }
827} 1459}
1460#endif
828 1461
829inline int 1462void inline_speed
830time_update_monotonic (EV_P) 1463time_update (EV_P_ ev_tstamp max_block)
831{
832 mn_now = get_clock ();
833
834 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
835 {
836 rt_now = rtmn_diff + mn_now;
837 return 0;
838 }
839 else
840 {
841 now_floor = mn_now;
842 rt_now = ev_time ();
843 return 1;
844 }
845}
846
847static void
848time_update (EV_P)
849{ 1464{
850 int i; 1465 int i;
851 1466
852#if EV_USE_MONOTONIC 1467#if EV_USE_MONOTONIC
853 if (expect_true (have_monotonic)) 1468 if (expect_true (have_monotonic))
854 { 1469 {
855 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))
856 { 1477 {
857 ev_tstamp odiff = rtmn_diff; 1478 ev_rt_now = rtmn_diff + mn_now;
1479 return;
1480 }
858 1481
1482 now_floor = mn_now;
1483 ev_rt_now = ev_time ();
1484
859 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 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; )
860 { 1494 {
861 rtmn_diff = rt_now - mn_now; 1495 rtmn_diff = ev_rt_now - mn_now;
862 1496
863 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1497 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864 return; /* all is well */ 1498 return; /* all is well */
865 1499
866 rt_now = ev_time (); 1500 ev_rt_now = ev_time ();
867 mn_now = get_clock (); 1501 mn_now = get_clock ();
868 now_floor = mn_now; 1502 now_floor = mn_now;
869 } 1503 }
870 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) */
1510 }
1511 else
1512#endif
1513 {
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))
1517 {
1518#if EV_PERIODIC_ENABLE
871 periodics_reschedule (EV_A); 1519 periodics_reschedule (EV_A);
872 /* no timer adjustment, as the monotonic clock doesn't jump */ 1520#endif
873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1521 /* adjust timers. this is easy, as the offset is the same for all of them */
1522 for (i = 0; i < timercnt; ++i)
1523 ((WT)timers [i])->at += ev_rt_now - mn_now;
874 } 1524 }
875 }
876 else
877#endif
878 {
879 rt_now = ev_time ();
880 1525
881 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
882 {
883 periodics_reschedule (EV_A);
884
885 /* adjust timers. this is easy, as the offset is the same for all */
886 for (i = 0; i < timercnt; ++i)
887 timers [i]->at += rt_now - mn_now;
888 }
889
890 mn_now = rt_now; 1526 mn_now = ev_rt_now;
891 } 1527 }
892} 1528}
893 1529
894void 1530void
895ev_ref (EV_P) 1531ev_ref (EV_P)
… …
906static int loop_done; 1542static int loop_done;
907 1543
908void 1544void
909ev_loop (EV_P_ int flags) 1545ev_loop (EV_P_ int flags)
910{ 1546{
911 double block;
912 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 */
913 1552
914 do 1553 do
915 { 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
916 /* queue check watchers (and execute them) */ 1574 /* queue prepare watchers (and execute them) */
917 if (expect_false (preparecnt)) 1575 if (expect_false (preparecnt))
918 { 1576 {
919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1577 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920 call_pending (EV_A); 1578 call_pending (EV_A);
921 } 1579 }
922 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
923 /* update fd-related kernel structures */ 1588 /* update fd-related kernel structures */
924 fd_reify (EV_A); 1589 fd_reify (EV_A);
925 1590
926 /* calculate blocking time */ 1591 /* calculate blocking time */
1592 {
1593 ev_tstamp waittime = 0.;
1594 ev_tstamp sleeptime = 0.;
927 1595
928 /* we only need this for !monotonic clockor timers, but as we basically 1596 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
929 always have timers, we just calculate it always */
930#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic))
932 time_update_monotonic (EV_A);
933 else
934#endif
935 { 1597 {
936 rt_now = ev_time (); 1598 /* update time to cancel out callback processing overhead */
937 mn_now = rt_now; 1599 time_update (EV_A_ 1e100);
938 }
939 1600
940 if (flags & EVLOOP_NONBLOCK || idlecnt)
941 block = 0.;
942 else
943 {
944 block = MAX_BLOCKTIME; 1601 waittime = MAX_BLOCKTIME;
945 1602
946 if (timercnt) 1603 if (timercnt)
947 { 1604 {
948 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1605 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
949 if (block > to) block = to; 1606 if (waittime > to) waittime = to;
950 } 1607 }
951 1608
1609#if EV_PERIODIC_ENABLE
952 if (periodiccnt) 1610 if (periodiccnt)
953 { 1611 {
954 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1612 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
955 if (block > to) block = to; 1613 if (waittime > to) waittime = to;
956 } 1614 }
1615#endif
957 1616
958 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 }
959 } 1630 }
960 1631
961 method_poll (EV_A_ block); 1632 ++loop_count;
1633 backend_poll (EV_A_ waittime);
962 1634
963 /* update rt_now, do magic */ 1635 /* update ev_rt_now, do magic */
964 time_update (EV_A); 1636 time_update (EV_A_ waittime + sleeptime);
1637 }
965 1638
966 /* queue pending timers and reschedule them */ 1639 /* queue pending timers and reschedule them */
967 timers_reify (EV_A); /* relative timers called last */ 1640 timers_reify (EV_A); /* relative timers called last */
1641#if EV_PERIODIC_ENABLE
968 periodics_reify (EV_A); /* absolute timers called first */ 1642 periodics_reify (EV_A); /* absolute timers called first */
1643#endif
969 1644
1645#if EV_IDLE_ENABLE
970 /* queue idle watchers unless io or timers are pending */ 1646 /* queue idle watchers unless other events are pending */
971 if (!pendingcnt) 1647 idle_reify (EV_A);
972 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1648#endif
973 1649
974 /* queue check watchers, to be executed first */ 1650 /* queue check watchers, to be executed first */
975 if (checkcnt) 1651 if (expect_false (checkcnt))
976 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1652 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
977 1653
978 call_pending (EV_A); 1654 call_pending (EV_A);
1655
979 } 1656 }
980 while (activecnt && !loop_done); 1657 while (expect_true (activecnt && !loop_done));
981 1658
982 if (loop_done != 2) 1659 if (loop_done == EVUNLOOP_ONE)
983 loop_done = 0; 1660 loop_done = EVUNLOOP_CANCEL;
984} 1661}
985 1662
986void 1663void
987ev_unloop (EV_P_ int how) 1664ev_unloop (EV_P_ int how)
988{ 1665{
989 loop_done = how; 1666 loop_done = how;
990} 1667}
991 1668
992/*****************************************************************************/ 1669/*****************************************************************************/
993 1670
994inline void 1671void inline_size
995wlist_add (WL *head, WL elem) 1672wlist_add (WL *head, WL elem)
996{ 1673{
997 elem->next = *head; 1674 elem->next = *head;
998 *head = elem; 1675 *head = elem;
999} 1676}
1000 1677
1001inline void 1678void inline_size
1002wlist_del (WL *head, WL elem) 1679wlist_del (WL *head, WL elem)
1003{ 1680{
1004 while (*head) 1681 while (*head)
1005 { 1682 {
1006 if (*head == elem) 1683 if (*head == elem)
… …
1011 1688
1012 head = &(*head)->next; 1689 head = &(*head)->next;
1013 } 1690 }
1014} 1691}
1015 1692
1016inline void 1693void inline_speed
1017ev_clear_pending (EV_P_ W w) 1694clear_pending (EV_P_ W w)
1018{ 1695{
1019 if (w->pending) 1696 if (w->pending)
1020 { 1697 {
1021 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1698 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1022 w->pending = 0; 1699 w->pending = 0;
1023 } 1700 }
1024} 1701}
1025 1702
1026inline 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
1027ev_start (EV_P_ W w, int active) 1730ev_start (EV_P_ W w, int active)
1028{ 1731{
1029 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1732 pri_adjust (EV_A_ w);
1030 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1031
1032 w->active = active; 1733 w->active = active;
1033 ev_ref (EV_A); 1734 ev_ref (EV_A);
1034} 1735}
1035 1736
1036inline void 1737void inline_size
1037ev_stop (EV_P_ W w) 1738ev_stop (EV_P_ W w)
1038{ 1739{
1039 ev_unref (EV_A); 1740 ev_unref (EV_A);
1040 w->active = 0; 1741 w->active = 0;
1041} 1742}
1042 1743
1043/*****************************************************************************/ 1744/*****************************************************************************/
1044 1745
1045void 1746void noinline
1046ev_io_start (EV_P_ struct ev_io *w) 1747ev_io_start (EV_P_ ev_io *w)
1047{ 1748{
1048 int fd = w->fd; 1749 int fd = w->fd;
1049 1750
1050 if (ev_is_active (w)) 1751 if (expect_false (ev_is_active (w)))
1051 return; 1752 return;
1052 1753
1053 assert (("ev_io_start called with negative fd", fd >= 0)); 1754 assert (("ev_io_start called with negative fd", fd >= 0));
1054 1755
1055 ev_start (EV_A_ (W)w, 1); 1756 ev_start (EV_A_ (W)w, 1);
1056 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1757 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1758 wlist_add (&anfds[fd].head, (WL)w);
1058 1759
1059 fd_change (EV_A_ fd); 1760 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1761 w->events &= ~EV_IOFDSET;
1060} 1762}
1061 1763
1062void 1764void noinline
1063ev_io_stop (EV_P_ struct ev_io *w) 1765ev_io_stop (EV_P_ ev_io *w)
1064{ 1766{
1065 ev_clear_pending (EV_A_ (W)w); 1767 clear_pending (EV_A_ (W)w);
1066 if (!ev_is_active (w)) 1768 if (expect_false (!ev_is_active (w)))
1067 return; 1769 return;
1068 1770
1771 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1772
1069 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1773 wlist_del (&anfds[w->fd].head, (WL)w);
1070 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1071 1775
1072 fd_change (EV_A_ w->fd); 1776 fd_change (EV_A_ w->fd, 1);
1073} 1777}
1074 1778
1075void 1779void noinline
1076ev_timer_start (EV_P_ struct ev_timer *w) 1780ev_timer_start (EV_P_ ev_timer *w)
1077{ 1781{
1078 if (ev_is_active (w)) 1782 if (expect_false (ev_is_active (w)))
1079 return; 1783 return;
1080 1784
1081 w->at += mn_now; 1785 ((WT)w)->at += mn_now;
1082 1786
1083 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.));
1084 1788
1085 ev_start (EV_A_ (W)w, ++timercnt); 1789 ev_start (EV_A_ (W)w, ++timercnt);
1086 array_needsize (timers, timermax, timercnt, ); 1790 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1087 timers [timercnt - 1] = w; 1791 timers [timercnt - 1] = (WT)w;
1088 upheap ((WT *)timers, timercnt - 1); 1792 upheap (timers, timercnt - 1);
1089}
1090 1793
1091void 1794 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1795}
1796
1797void noinline
1092ev_timer_stop (EV_P_ struct ev_timer *w) 1798ev_timer_stop (EV_P_ ev_timer *w)
1093{ 1799{
1094 ev_clear_pending (EV_A_ (W)w); 1800 clear_pending (EV_A_ (W)w);
1095 if (!ev_is_active (w)) 1801 if (expect_false (!ev_is_active (w)))
1096 return; 1802 return;
1097 1803
1098 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))
1099 { 1810 {
1100 timers [w->active - 1] = timers [timercnt]; 1811 timers [active] = timers [timercnt];
1101 downheap ((WT *)timers, timercnt, w->active - 1); 1812 adjustheap (timers, timercnt, active);
1102 } 1813 }
1814 }
1103 1815
1104 w->at = w->repeat; 1816 ((WT)w)->at -= mn_now;
1105 1817
1106 ev_stop (EV_A_ (W)w); 1818 ev_stop (EV_A_ (W)w);
1107} 1819}
1108 1820
1109void 1821void noinline
1110ev_timer_again (EV_P_ struct ev_timer *w) 1822ev_timer_again (EV_P_ ev_timer *w)
1111{ 1823{
1112 if (ev_is_active (w)) 1824 if (ev_is_active (w))
1113 { 1825 {
1114 if (w->repeat) 1826 if (w->repeat)
1115 { 1827 {
1116 w->at = mn_now + w->repeat; 1828 ((WT)w)->at = mn_now + w->repeat;
1117 downheap ((WT *)timers, timercnt, w->active - 1); 1829 adjustheap (timers, timercnt, ((W)w)->active - 1);
1118 } 1830 }
1119 else 1831 else
1120 ev_timer_stop (EV_A_ w); 1832 ev_timer_stop (EV_A_ w);
1121 } 1833 }
1122 else if (w->repeat) 1834 else if (w->repeat)
1835 {
1836 w->at = w->repeat;
1123 ev_timer_start (EV_A_ w); 1837 ev_timer_start (EV_A_ w);
1838 }
1124} 1839}
1125 1840
1126void 1841#if EV_PERIODIC_ENABLE
1842void noinline
1127ev_periodic_start (EV_P_ struct ev_periodic *w) 1843ev_periodic_start (EV_P_ ev_periodic *w)
1128{ 1844{
1129 if (ev_is_active (w)) 1845 if (expect_false (ev_is_active (w)))
1130 return; 1846 return;
1131 1847
1848 if (w->reschedule_cb)
1849 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1850 else if (w->interval)
1851 {
1132 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.));
1133
1134 /* 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 */
1135 if (w->interval)
1136 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;
1137 1858
1138 ev_start (EV_A_ (W)w, ++periodiccnt); 1859 ev_start (EV_A_ (W)w, ++periodiccnt);
1139 array_needsize (periodics, periodicmax, periodiccnt, ); 1860 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1140 periodics [periodiccnt - 1] = w; 1861 periodics [periodiccnt - 1] = (WT)w;
1141 upheap ((WT *)periodics, periodiccnt - 1); 1862 upheap (periodics, periodiccnt - 1);
1142}
1143 1863
1144void 1864 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1865}
1866
1867void noinline
1145ev_periodic_stop (EV_P_ struct ev_periodic *w) 1868ev_periodic_stop (EV_P_ ev_periodic *w)
1146{ 1869{
1147 ev_clear_pending (EV_A_ (W)w); 1870 clear_pending (EV_A_ (W)w);
1148 if (!ev_is_active (w)) 1871 if (expect_false (!ev_is_active (w)))
1149 return; 1872 return;
1150 1873
1151 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))
1152 { 1880 {
1153 periodics [w->active - 1] = periodics [periodiccnt]; 1881 periodics [active] = periodics [periodiccnt];
1154 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1882 adjustheap (periodics, periodiccnt, active);
1155 } 1883 }
1884 }
1156 1885
1157 ev_stop (EV_A_ (W)w); 1886 ev_stop (EV_A_ (W)w);
1158} 1887}
1159 1888
1160void 1889void noinline
1161ev_idle_start (EV_P_ struct ev_idle *w) 1890ev_periodic_again (EV_P_ ev_periodic *w)
1162{ 1891{
1163 if (ev_is_active (w)) 1892 /* TODO: use adjustheap and recalculation */
1164 return;
1165
1166 ev_start (EV_A_ (W)w, ++idlecnt);
1167 array_needsize (idles, idlemax, idlecnt, );
1168 idles [idlecnt - 1] = w;
1169}
1170
1171void
1172ev_idle_stop (EV_P_ struct ev_idle *w)
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w))
1176 return;
1177
1178 idles [w->active - 1] = idles [--idlecnt];
1179 ev_stop (EV_A_ (W)w); 1893 ev_periodic_stop (EV_A_ w);
1894 ev_periodic_start (EV_A_ w);
1180} 1895}
1181 1896#endif
1182void
1183ev_prepare_start (EV_P_ struct ev_prepare *w)
1184{
1185 if (ev_is_active (w))
1186 return;
1187
1188 ev_start (EV_A_ (W)w, ++preparecnt);
1189 array_needsize (prepares, preparemax, preparecnt, );
1190 prepares [preparecnt - 1] = w;
1191}
1192
1193void
1194ev_prepare_stop (EV_P_ struct ev_prepare *w)
1195{
1196 ev_clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w))
1198 return;
1199
1200 prepares [w->active - 1] = prepares [--preparecnt];
1201 ev_stop (EV_A_ (W)w);
1202}
1203
1204void
1205ev_check_start (EV_P_ struct ev_check *w)
1206{
1207 if (ev_is_active (w))
1208 return;
1209
1210 ev_start (EV_A_ (W)w, ++checkcnt);
1211 array_needsize (checks, checkmax, checkcnt, );
1212 checks [checkcnt - 1] = w;
1213}
1214
1215void
1216ev_check_stop (EV_P_ struct ev_check *w)
1217{
1218 ev_clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w))
1220 return;
1221
1222 checks [w->active - 1] = checks [--checkcnt];
1223 ev_stop (EV_A_ (W)w);
1224}
1225 1897
1226#ifndef SA_RESTART 1898#ifndef SA_RESTART
1227# define SA_RESTART 0 1899# define SA_RESTART 0
1228#endif 1900#endif
1229 1901
1230void 1902void noinline
1231ev_signal_start (EV_P_ struct ev_signal *w) 1903ev_signal_start (EV_P_ ev_signal *w)
1232{ 1904{
1233#if EV_MULTIPLICITY 1905#if EV_MULTIPLICITY
1234 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1906 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1235#endif 1907#endif
1236 if (ev_is_active (w)) 1908 if (expect_false (ev_is_active (w)))
1237 return; 1909 return;
1238 1910
1239 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));
1240 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
1241 ev_start (EV_A_ (W)w, 1); 1929 ev_start (EV_A_ (W)w, 1);
1242 array_needsize (signals, signalmax, w->signum, signals_init);
1243 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1930 wlist_add (&signals [w->signum - 1].head, (WL)w);
1244 1931
1245 if (!w->next) 1932 if (!((WL)w)->next)
1246 { 1933 {
1934#if _WIN32
1935 signal (w->signum, sighandler);
1936#else
1247 struct sigaction sa; 1937 struct sigaction sa;
1248 sa.sa_handler = sighandler; 1938 sa.sa_handler = sighandler;
1249 sigfillset (&sa.sa_mask); 1939 sigfillset (&sa.sa_mask);
1250 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 */
1251 sigaction (w->signum, &sa, 0); 1941 sigaction (w->signum, &sa, 0);
1942#endif
1252 } 1943 }
1253} 1944}
1254 1945
1255void 1946void noinline
1256ev_signal_stop (EV_P_ struct ev_signal *w) 1947ev_signal_stop (EV_P_ ev_signal *w)
1257{ 1948{
1258 ev_clear_pending (EV_A_ (W)w); 1949 clear_pending (EV_A_ (W)w);
1259 if (!ev_is_active (w)) 1950 if (expect_false (!ev_is_active (w)))
1260 return; 1951 return;
1261 1952
1262 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1953 wlist_del (&signals [w->signum - 1].head, (WL)w);
1263 ev_stop (EV_A_ (W)w); 1954 ev_stop (EV_A_ (W)w);
1264 1955
1265 if (!signals [w->signum - 1].head) 1956 if (!signals [w->signum - 1].head)
1266 signal (w->signum, SIG_DFL); 1957 signal (w->signum, SIG_DFL);
1267} 1958}
1268 1959
1269void 1960void
1270ev_child_start (EV_P_ struct ev_child *w) 1961ev_child_start (EV_P_ ev_child *w)
1271{ 1962{
1272#if EV_MULTIPLICITY 1963#if EV_MULTIPLICITY
1273 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1964 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1274#endif 1965#endif
1275 if (ev_is_active (w)) 1966 if (expect_false (ev_is_active (w)))
1276 return; 1967 return;
1277 1968
1278 ev_start (EV_A_ (W)w, 1); 1969 ev_start (EV_A_ (W)w, 1);
1279 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1970 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1280} 1971}
1281 1972
1282void 1973void
1283ev_child_stop (EV_P_ struct ev_child *w) 1974ev_child_stop (EV_P_ ev_child *w)
1284{ 1975{
1285 ev_clear_pending (EV_A_ (W)w); 1976 clear_pending (EV_A_ (W)w);
1286 if (ev_is_active (w)) 1977 if (expect_false (!ev_is_active (w)))
1287 return; 1978 return;
1288 1979
1289 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1980 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1290 ev_stop (EV_A_ (W)w); 1981 ev_stop (EV_A_ (W)w);
1291} 1982}
1292 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
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
2275ev_prepare_start (EV_P_ ev_prepare *w)
2276{
2277 if (expect_false (ev_is_active (w)))
2278 return;
2279
2280 ev_start (EV_A_ (W)w, ++preparecnt);
2281 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2282 prepares [preparecnt - 1] = w;
2283}
2284
2285void
2286ev_prepare_stop (EV_P_ ev_prepare *w)
2287{
2288 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w)))
2290 return;
2291
2292 {
2293 int active = ((W)w)->active;
2294 prepares [active - 1] = prepares [--preparecnt];
2295 ((W)prepares [active - 1])->active = active;
2296 }
2297
2298 ev_stop (EV_A_ (W)w);
2299}
2300
2301void
2302ev_check_start (EV_P_ ev_check *w)
2303{
2304 if (expect_false (ev_is_active (w)))
2305 return;
2306
2307 ev_start (EV_A_ (W)w, ++checkcnt);
2308 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2309 checks [checkcnt - 1] = w;
2310}
2311
2312void
2313ev_check_stop (EV_P_ ev_check *w)
2314{
2315 clear_pending (EV_A_ (W)w);
2316 if (expect_false (!ev_is_active (w)))
2317 return;
2318
2319 {
2320 int active = ((W)w)->active;
2321 checks [active - 1] = checks [--checkcnt];
2322 ((W)checks [active - 1])->active = active;
2323 }
2324
2325 ev_stop (EV_A_ (W)w);
2326}
2327
2328#if EV_EMBED_ENABLE
2329void noinline
2330ev_embed_sweep (EV_P_ ev_embed *w)
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
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)))
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
2391 ev_start (EV_A_ (W)w, 1);
2392}
2393
2394void
2395ev_embed_stop (EV_P_ ev_embed *w)
2396{
2397 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w)))
2399 return;
2400
2401 ev_io_stop (EV_A_ &w->io);
2402 ev_prepare_stop (EV_A_ &w->prepare);
2403
2404 ev_stop (EV_A_ (W)w);
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
2474
1293/*****************************************************************************/ 2475/*****************************************************************************/
1294 2476
1295struct ev_once 2477struct ev_once
1296{ 2478{
1297 struct ev_io io; 2479 ev_io io;
1298 struct ev_timer to; 2480 ev_timer to;
1299 void (*cb)(int revents, void *arg); 2481 void (*cb)(int revents, void *arg);
1300 void *arg; 2482 void *arg;
1301}; 2483};
1302 2484
1303static void 2485static void
… …
1306 void (*cb)(int revents, void *arg) = once->cb; 2488 void (*cb)(int revents, void *arg) = once->cb;
1307 void *arg = once->arg; 2489 void *arg = once->arg;
1308 2490
1309 ev_io_stop (EV_A_ &once->io); 2491 ev_io_stop (EV_A_ &once->io);
1310 ev_timer_stop (EV_A_ &once->to); 2492 ev_timer_stop (EV_A_ &once->to);
1311 free (once); 2493 ev_free (once);
1312 2494
1313 cb (revents, arg); 2495 cb (revents, arg);
1314} 2496}
1315 2497
1316static void 2498static void
1317once_cb_io (EV_P_ struct ev_io *w, int revents) 2499once_cb_io (EV_P_ ev_io *w, int revents)
1318{ 2500{
1319 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);
1320} 2502}
1321 2503
1322static void 2504static void
1323once_cb_to (EV_P_ struct ev_timer *w, int revents) 2505once_cb_to (EV_P_ ev_timer *w, int revents)
1324{ 2506{
1325 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);
1326} 2508}
1327 2509
1328void 2510void
1329ev_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)
1330{ 2512{
1331 struct ev_once *once = malloc (sizeof (struct ev_once)); 2513 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1332 2514
1333 if (!once) 2515 if (expect_false (!once))
2516 {
1334 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2517 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1335 else 2518 return;
1336 { 2519 }
2520
1337 once->cb = cb; 2521 once->cb = cb;
1338 once->arg = arg; 2522 once->arg = arg;
1339 2523
1340 ev_watcher_init (&once->io, once_cb_io); 2524 ev_init (&once->io, once_cb_io);
1341 if (fd >= 0) 2525 if (fd >= 0)
1342 { 2526 {
1343 ev_io_set (&once->io, fd, events); 2527 ev_io_set (&once->io, fd, events);
1344 ev_io_start (EV_A_ &once->io); 2528 ev_io_start (EV_A_ &once->io);
1345 } 2529 }
1346 2530
1347 ev_watcher_init (&once->to, once_cb_to); 2531 ev_init (&once->to, once_cb_to);
1348 if (timeout >= 0.) 2532 if (timeout >= 0.)
1349 { 2533 {
1350 ev_timer_set (&once->to, timeout, 0.); 2534 ev_timer_set (&once->to, timeout, 0.);
1351 ev_timer_start (EV_A_ &once->to); 2535 ev_timer_start (EV_A_ &once->to);
1352 }
1353 } 2536 }
1354} 2537}
1355 2538
2539#if EV_MULTIPLICITY
2540 #include "ev_wrap.h"
2541#endif
2542
2543#ifdef __cplusplus
2544}
2545#endif
2546

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