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Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 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 */
31#ifndef EV_EMBED 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
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#ifndef EV_EMBED
99# include "ev.h"
100#endif
101
102#if __GNUC__ >= 3 262#if __GNUC__ >= 4
103# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
104# define inline inline 264# define noinline __attribute__ ((noinline))
105#else 265#else
106# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
107# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
108#endif 271#endif
109 272
110#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
111#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
112 282
113#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
115 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
116typedef struct ev_watcher *W; 289typedef ev_watcher *W;
117typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
118typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
119 292
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 */
120static 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
121 302
122/*****************************************************************************/ 303/*****************************************************************************/
123 304
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
124typedef struct 355typedef struct
125{ 356{
126 struct ev_watcher_list *head; 357 WL head;
127 unsigned char events; 358 unsigned char events;
128 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
129} ANFD; 363} ANFD;
130 364
131typedef struct 365typedef struct
132{ 366{
133 W w; 367 W w;
134 int events; 368 int events;
135} ANPENDING; 369} ANPENDING;
136 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
137#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
138 379
139struct ev_loop 380 struct ev_loop
140{ 381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
141# define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
142# include "ev_vars.h" 385 #include "ev_vars.h"
143};
144# undef VAR 386 #undef VAR
387 };
145# 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;
146 392
147#else 393#else
148 394
395 ev_tstamp ev_rt_now;
149# define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
150# include "ev_vars.h" 397 #include "ev_vars.h"
151# undef VAR 398 #undef VAR
399
400 static int ev_default_loop_ptr;
152 401
153#endif 402#endif
154 403
155/*****************************************************************************/ 404/*****************************************************************************/
156 405
157inline ev_tstamp 406ev_tstamp
158ev_time (void) 407ev_time (void)
159{ 408{
160#if EV_USE_REALTIME 409#if EV_USE_REALTIME
161 struct timespec ts; 410 struct timespec ts;
162 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
… …
166 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
167 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
168#endif 417#endif
169} 418}
170 419
171inline ev_tstamp 420ev_tstamp inline_size
172get_clock (void) 421get_clock (void)
173{ 422{
174#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
175 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
176 { 425 {
… …
181#endif 430#endif
182 431
183 return ev_time (); 432 return ev_time ();
184} 433}
185 434
435#if EV_MULTIPLICITY
186ev_tstamp 436ev_tstamp
187ev_now (EV_P) 437ev_now (EV_P)
188{ 438{
189 return rt_now; 439 return ev_rt_now;
190} 440}
441#endif
191 442
192#define array_roundsize(base,n) ((n) | 4 & ~3) 443void
193 444ev_sleep (ev_tstamp delay)
194#define array_needsize(base,cur,cnt,init) \ 445{
195 if (expect_false ((cnt) > cur)) \ 446 if (delay > 0.)
196 { \
197 int newcnt = cur; \
198 do \
199 { \
200 newcnt = array_roundsize (base, newcnt << 1); \
201 } \
202 while ((cnt) > newcnt); \
203 \
204 base = realloc (base, sizeof (*base) * (newcnt)); \
205 init (base + cur, newcnt - cur); \
206 cur = newcnt; \
207 } 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}
208 467
209/*****************************************************************************/ 468/*****************************************************************************/
210 469
211static 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
212anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
213{ 552{
214 while (count--) 553 while (count--)
215 { 554 {
216 base->head = 0; 555 base->head = 0;
… …
219 558
220 ++base; 559 ++base;
221 } 560 }
222} 561}
223 562
224static void 563void inline_speed
225event (EV_P_ W w, int events)
226{
227 if (w->pending)
228 {
229 pendings [ABSPRI (w)][w->pending - 1].events |= events;
230 return;
231 }
232
233 w->pending = ++pendingcnt [ABSPRI (w)];
234 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
235 pendings [ABSPRI (w)][w->pending - 1].w = w;
236 pendings [ABSPRI (w)][w->pending - 1].events = events;
237}
238
239static void
240queue_events (EV_P_ W *events, int eventcnt, int type)
241{
242 int i;
243
244 for (i = 0; i < eventcnt; ++i)
245 event (EV_A_ events [i], type);
246}
247
248static void
249fd_event (EV_P_ int fd, int events) 564fd_event (EV_P_ int fd, int revents)
250{ 565{
251 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
252 struct ev_io *w; 567 ev_io *w;
253 568
254 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)
255 { 570 {
256 int ev = w->events & events; 571 int ev = w->events & revents;
257 572
258 if (ev) 573 if (ev)
259 event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
260 } 575 }
261} 576}
262 577
263/*****************************************************************************/ 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}
264 584
265static void 585void inline_size
266fd_reify (EV_P) 586fd_reify (EV_P)
267{ 587{
268 int i; 588 int i;
269 589
270 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
271 { 591 {
272 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
273 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
274 struct ev_io *w; 594 ev_io *w;
275 595
276 int events = 0; 596 unsigned char events = 0;
277 597
278 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)
279 events |= w->events; 599 events |= (unsigned char)w->events;
280 600
281 anfd->reify = 0; 601#if EV_SELECT_IS_WINSOCKET
282 602 if (events)
283 if (anfd->events != events)
284 { 603 {
285 method_modify (EV_A_ fd, anfd->events, events); 604 unsigned long argp;
286 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));
287 } 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 }
288 } 624 }
289 625
290 fdchangecnt = 0; 626 fdchangecnt = 0;
291} 627}
292 628
293static void 629void inline_size
294fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
295{ 631{
296 if (anfds [fd].reify || fdchangecnt < 0) 632 unsigned char reify = anfds [fd].reify;
297 return;
298
299 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
300 634
635 if (expect_true (!reify))
636 {
301 ++fdchangecnt; 637 ++fdchangecnt;
302 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
304} 641}
305 642
306static void 643void inline_speed
307fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
308{ 645{
309 struct ev_io *w; 646 ev_io *w;
310 647
311 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
312 { 649 {
313 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
314 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);
315 } 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
316} 663}
317 664
318/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
319static void 666static void noinline
320fd_ebadf (EV_P) 667fd_ebadf (EV_P)
321{ 668{
322 int fd; 669 int fd;
323 670
324 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
325 if (anfds [fd].events) 672 if (anfds [fd].events)
326 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
327 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
328} 675}
329 676
330/* 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 */
331static void 678static void noinline
332fd_enomem (EV_P) 679fd_enomem (EV_P)
333{ 680{
334 int fd = anfdmax; 681 int fd;
335 682
336 while (fd--) 683 for (fd = anfdmax; fd--; )
337 if (anfds [fd].events) 684 if (anfds [fd].events)
338 { 685 {
339 close (fd);
340 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
341 return; 687 return;
342 } 688 }
343} 689}
344 690
345/* 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 */
346static void 692static void noinline
347fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
348{ 694{
349 int fd; 695 int fd;
350 696
351 /* this should be highly optimised to not do anything but set a flag */
352 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
353 if (anfds [fd].events) 698 if (anfds [fd].events)
354 { 699 {
355 anfds [fd].events = 0; 700 anfds [fd].events = 0;
356 fd_change (fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
357 } 702 }
358} 703}
359 704
360/*****************************************************************************/ 705/*****************************************************************************/
361 706
362static void 707void inline_speed
363upheap (WT *heap, int k) 708upheap (WT *heap, int k)
364{ 709{
365 WT w = heap [k]; 710 WT w = heap [k];
366 711
367 while (k && heap [k >> 1]->at > w->at) 712 while (k)
368 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
369 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
370 heap [k]->active = k + 1; 720 ((W)heap [k])->active = k + 1;
371 k >>= 1; 721 k = p;
372 } 722 }
373 723
374 heap [k] = w; 724 heap [k] = w;
375 heap [k]->active = k + 1; 725 ((W)heap [k])->active = k + 1;
376
377} 726}
378 727
379static void 728void inline_speed
380downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
381{ 730{
382 WT w = heap [k]; 731 WT w = heap [k];
383 732
384 while (k < (N >> 1)) 733 for (;;)
385 { 734 {
386 int j = k << 1; 735 int c = (k << 1) + 1;
387 736
388 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
389 ++j;
390
391 if (w->at <= heap [j]->at)
392 break; 738 break;
393 739
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
394 heap [k] = heap [j]; 746 heap [k] = heap [c];
395 heap [k]->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
396 k = j; 749 k = c;
397 } 750 }
398 751
399 heap [k] = w; 752 heap [k] = w;
400 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);
401} 761}
402 762
403/*****************************************************************************/ 763/*****************************************************************************/
404 764
405typedef struct 765typedef struct
406{ 766{
407 struct ev_watcher_list *head; 767 WL head;
408 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
409} ANSIG; 769} ANSIG;
410 770
411static ANSIG *signals; 771static ANSIG *signals;
412static int signalmax; 772static int signalmax;
413 773
414static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
415static sig_atomic_t volatile gotsig;
416 775
417static void 776void inline_size
418signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
419{ 778{
420 while (count--) 779 while (count--)
421 { 780 {
422 base->head = 0; 781 base->head = 0;
… …
424 783
425 ++base; 784 ++base;
426 } 785 }
427} 786}
428 787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd)
792{
793#ifdef _WIN32
794 int arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif
800}
801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
852 if (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}
865
866/*****************************************************************************/
867
429static void 868static void
430sighandler (int signum) 869sighandler (int signum)
431{ 870{
871#if EV_MULTIPLICITY
872 struct ev_loop *loop = &default_loop_struct;
873#endif
874
875#if _WIN32
876 signal (signum, sighandler);
877#endif
878
432 signals [signum - 1].gotsig = 1; 879 signals [signum - 1].gotsig = 1;
433 880 evpipe_write (EV_A_ 1, 0);
434 if (!gotsig)
435 {
436 int old_errno = errno;
437 gotsig = 1;
438 write (sigpipe [1], &signum, 1);
439 errno = old_errno;
440 }
441} 881}
442 882
443static void 883void noinline
444sigcb (EV_P_ struct ev_io *iow, int revents) 884ev_feed_signal_event (EV_P_ int signum)
445{ 885{
446 struct ev_watcher_list *w; 886 WL w;
887
888#if EV_MULTIPLICITY
889 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
890#endif
891
447 int signum; 892 --signum;
448 893
449 read (sigpipe [0], &revents, 1); 894 if (signum < 0 || signum >= signalmax)
450 gotsig = 0; 895 return;
451 896
452 for (signum = signalmax; signum--; )
453 if (signals [signum].gotsig)
454 {
455 signals [signum].gotsig = 0; 897 signals [signum].gotsig = 0;
456 898
457 for (w = signals [signum].head; w; w = w->next) 899 for (w = signals [signum].head; w; w = w->next)
458 event (EV_A_ (W)w, EV_SIGNAL); 900 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
459 }
460}
461
462static void
463siginit (EV_P)
464{
465#ifndef WIN32
466 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
467 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469 /* rather than sort out wether we really need nb, set it */
470 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472#endif
473
474 ev_io_set (&sigev, sigpipe [0], EV_READ);
475 ev_io_start (EV_A_ &sigev);
476 ev_unref (EV_A); /* child watcher should not keep loop alive */
477} 901}
478 902
479/*****************************************************************************/ 903/*****************************************************************************/
480 904
905static WL childs [EV_PID_HASHSIZE];
906
481#ifndef WIN32 907#ifndef _WIN32
908
909static ev_signal childev;
910
911#ifndef WIFCONTINUED
912# define WIFCONTINUED(status) 0
913#endif
914
915void inline_speed
916child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
917{
918 ev_child *w;
919 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
920
921 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
922 {
923 if ((w->pid == pid || !w->pid)
924 && (!traced || (w->flags & 1)))
925 {
926 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
927 w->rpid = pid;
928 w->rstatus = status;
929 ev_feed_event (EV_A_ (W)w, EV_CHILD);
930 }
931 }
932}
482 933
483#ifndef WCONTINUED 934#ifndef WCONTINUED
484# define WCONTINUED 0 935# define WCONTINUED 0
485#endif 936#endif
486 937
487static void 938static void
488child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
489{
490 struct ev_child *w;
491
492 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
493 if (w->pid == pid || !w->pid)
494 {
495 w->priority = sw->priority; /* need to do it *now* */
496 w->rpid = pid;
497 w->rstatus = status;
498 event (EV_A_ (W)w, EV_CHILD);
499 }
500}
501
502static void
503childcb (EV_P_ struct ev_signal *sw, int revents) 939childcb (EV_P_ ev_signal *sw, int revents)
504{ 940{
505 int pid, status; 941 int pid, status;
506 942
943 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
507 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 944 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
508 { 945 if (!WCONTINUED
946 || errno != EINVAL
947 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
948 return;
949
509 /* make sure we are called again until all childs have been reaped */ 950 /* make sure we are called again until all childs have been reaped */
951 /* we need to do it this way so that the callback gets called before we continue */
510 event (EV_A_ (W)sw, EV_SIGNAL); 952 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511 953
512 child_reap (EV_A_ sw, pid, pid, status); 954 child_reap (EV_A_ sw, pid, pid, status);
955 if (EV_PID_HASHSIZE > 1)
513 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 956 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
514 }
515} 957}
516 958
517#endif 959#endif
518 960
519/*****************************************************************************/ 961/*****************************************************************************/
520 962
963#if EV_USE_PORT
964# include "ev_port.c"
965#endif
521#if EV_USE_KQUEUE 966#if EV_USE_KQUEUE
522# include "ev_kqueue.c" 967# include "ev_kqueue.c"
523#endif 968#endif
524#if EV_USE_EPOLL 969#if EV_USE_EPOLL
525# include "ev_epoll.c" 970# include "ev_epoll.c"
526#endif 971#endif
527#if EV_USEV_POLL 972#if EV_USE_POLL
528# include "ev_poll.c" 973# include "ev_poll.c"
529#endif 974#endif
530#if EV_USE_SELECT 975#if EV_USE_SELECT
531# include "ev_select.c" 976# include "ev_select.c"
532#endif 977#endif
… …
542{ 987{
543 return EV_VERSION_MINOR; 988 return EV_VERSION_MINOR;
544} 989}
545 990
546/* return true if we are running with elevated privileges and should ignore env variables */ 991/* return true if we are running with elevated privileges and should ignore env variables */
547static int 992int inline_size
548enable_secure (void) 993enable_secure (void)
549{ 994{
550#ifdef WIN32 995#ifdef _WIN32
551 return 0; 996 return 0;
552#else 997#else
553 return getuid () != geteuid () 998 return getuid () != geteuid ()
554 || getgid () != getegid (); 999 || getgid () != getegid ();
555#endif 1000#endif
556} 1001}
557 1002
558int 1003unsigned int
559ev_method (EV_P) 1004ev_supported_backends (void)
560{ 1005{
561 return method; 1006 unsigned int flags = 0;
562}
563 1007
564static void 1008 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
565loop_init (EV_P_ int methods) 1009 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1010 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1012 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1013
1014 return flags;
1015}
1016
1017unsigned int
1018ev_recommended_backends (void)
566{ 1019{
567 if (!method) 1020 unsigned int flags = ev_supported_backends ();
1021
1022#ifndef __NetBSD__
1023 /* kqueue is borked on everything but netbsd apparently */
1024 /* it usually doesn't work correctly on anything but sockets and pipes */
1025 flags &= ~EVBACKEND_KQUEUE;
1026#endif
1027#ifdef __APPLE__
1028 // flags &= ~EVBACKEND_KQUEUE; for documentation
1029 flags &= ~EVBACKEND_POLL;
1030#endif
1031
1032 return flags;
1033}
1034
1035unsigned int
1036ev_embeddable_backends (void)
1037{
1038 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1039
1040 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1041 /* please fix it and tell me how to detect the fix */
1042 flags &= ~EVBACKEND_EPOLL;
1043
1044 return flags;
1045}
1046
1047unsigned int
1048ev_backend (EV_P)
1049{
1050 return backend;
1051}
1052
1053unsigned int
1054ev_loop_count (EV_P)
1055{
1056 return loop_count;
1057}
1058
1059void
1060ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061{
1062 io_blocktime = interval;
1063}
1064
1065void
1066ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 timeout_blocktime = interval;
1069}
1070
1071static void noinline
1072loop_init (EV_P_ unsigned int flags)
1073{
1074 if (!backend)
568 { 1075 {
569#if EV_USE_MONOTONIC 1076#if EV_USE_MONOTONIC
570 { 1077 {
571 struct timespec ts; 1078 struct timespec ts;
572 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1079 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573 have_monotonic = 1; 1080 have_monotonic = 1;
574 } 1081 }
575#endif 1082#endif
576 1083
577 rt_now = ev_time (); 1084 ev_rt_now = ev_time ();
578 mn_now = get_clock (); 1085 mn_now = get_clock ();
579 now_floor = mn_now; 1086 now_floor = mn_now;
580 rtmn_diff = rt_now - mn_now; 1087 rtmn_diff = ev_rt_now - mn_now;
581 1088
582 if (methods == EVMETHOD_AUTO) 1089 io_blocktime = 0.;
583 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1090 timeout_blocktime = 0.;
1091
1092 /* pid check not overridable via env */
1093#ifndef _WIN32
1094 if (flags & EVFLAG_FORKCHECK)
1095 curpid = getpid ();
1096#endif
1097
1098 if (!(flags & EVFLAG_NOENV)
1099 && !enable_secure ()
1100 && getenv ("LIBEV_FLAGS"))
584 methods = atoi (getenv ("LIBEV_METHODS")); 1101 flags = atoi (getenv ("LIBEV_FLAGS"));
585 else
586 methods = EVMETHOD_ANY;
587 1102
588 method = 0; 1103 if (!(flags & 0x0000ffffUL))
1104 flags |= ev_recommended_backends ();
1105
1106 backend = 0;
1107 backend_fd = -1;
1108#if EV_USE_INOTIFY
1109 fs_fd = -2;
1110#endif
1111
1112#if EV_USE_PORT
1113 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1114#endif
589#if EV_USE_KQUEUE 1115#if EV_USE_KQUEUE
590 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1116 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
591#endif 1117#endif
592#if EV_USE_EPOLL 1118#if EV_USE_EPOLL
593 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1119 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
594#endif 1120#endif
595#if EV_USEV_POLL 1121#if EV_USE_POLL
596 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1122 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
597#endif 1123#endif
598#if EV_USE_SELECT 1124#if EV_USE_SELECT
599 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1125 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
600#endif 1126#endif
601 }
602}
603 1127
604void 1128 ev_init (&pipeev, pipecb);
1129 ev_set_priority (&pipeev, EV_MAXPRI);
1130 }
1131}
1132
1133static void noinline
605loop_destroy (EV_P) 1134loop_destroy (EV_P)
606{ 1135{
1136 int i;
1137
1138 if (ev_is_active (&pipeev))
1139 {
1140 ev_ref (EV_A); /* signal watcher */
1141 ev_io_stop (EV_A_ &pipeev);
1142
1143 close (evpipe [0]); evpipe [0] = 0;
1144 close (evpipe [1]); evpipe [1] = 0;
1145 }
1146
1147#if EV_USE_INOTIFY
1148 if (fs_fd >= 0)
1149 close (fs_fd);
1150#endif
1151
1152 if (backend_fd >= 0)
1153 close (backend_fd);
1154
1155#if EV_USE_PORT
1156 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1157#endif
607#if EV_USE_KQUEUE 1158#if EV_USE_KQUEUE
608 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1159 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
609#endif 1160#endif
610#if EV_USE_EPOLL 1161#if EV_USE_EPOLL
611 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1162 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
612#endif 1163#endif
613#if EV_USEV_POLL 1164#if EV_USE_POLL
614 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1165 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
615#endif 1166#endif
616#if EV_USE_SELECT 1167#if EV_USE_SELECT
617 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1168 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
618#endif 1169#endif
619 1170
620 method = 0; 1171 for (i = NUMPRI; i--; )
621 /*TODO*/ 1172 {
622} 1173 array_free (pending, [i]);
1174#if EV_IDLE_ENABLE
1175 array_free (idle, [i]);
1176#endif
1177 }
623 1178
624void 1179 ev_free (anfds); anfdmax = 0;
1180
1181 /* have to use the microsoft-never-gets-it-right macro */
1182 array_free (fdchange, EMPTY);
1183 array_free (timer, EMPTY);
1184#if EV_PERIODIC_ENABLE
1185 array_free (periodic, EMPTY);
1186#endif
1187#if EV_FORK_ENABLE
1188 array_free (fork, EMPTY);
1189#endif
1190 array_free (prepare, EMPTY);
1191 array_free (check, EMPTY);
1192
1193 backend = 0;
1194}
1195
1196void inline_size infy_fork (EV_P);
1197
1198void inline_size
625loop_fork (EV_P) 1199loop_fork (EV_P)
626{ 1200{
627 /*TODO*/ 1201#if EV_USE_PORT
1202 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1203#endif
1204#if EV_USE_KQUEUE
1205 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1206#endif
628#if EV_USE_EPOLL 1207#if EV_USE_EPOLL
629 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1208 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
630#endif 1209#endif
631#if EV_USE_KQUEUE 1210#if EV_USE_INOTIFY
632 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1211 infy_fork (EV_A);
633#endif 1212#endif
1213
1214 if (ev_is_active (&pipeev))
1215 {
1216 /* this "locks" the handlers against writing to the pipe */
1217 gotsig = gotasync = 1;
1218
1219 ev_ref (EV_A);
1220 ev_io_stop (EV_A_ &pipeev);
1221 close (evpipe [0]);
1222 close (evpipe [1]);
1223
1224 evpipe_init (EV_A);
1225 /* now iterate over everything, in case we missed something */
1226 pipecb (EV_A_ &pipeev, EV_READ);
1227 }
1228
1229 postfork = 0;
634} 1230}
635 1231
636#if EV_MULTIPLICITY 1232#if EV_MULTIPLICITY
637struct ev_loop * 1233struct ev_loop *
638ev_loop_new (int methods) 1234ev_loop_new (unsigned int flags)
639{ 1235{
640 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1236 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
641 1237
1238 memset (loop, 0, sizeof (struct ev_loop));
1239
642 loop_init (EV_A_ methods); 1240 loop_init (EV_A_ flags);
643 1241
644 if (ev_methods (EV_A)) 1242 if (ev_backend (EV_A))
645 return loop; 1243 return loop;
646 1244
647 return 0; 1245 return 0;
648} 1246}
649 1247
650void 1248void
651ev_loop_destroy (EV_P) 1249ev_loop_destroy (EV_P)
652{ 1250{
653 loop_destroy (EV_A); 1251 loop_destroy (EV_A);
654 free (loop); 1252 ev_free (loop);
655} 1253}
656 1254
657void 1255void
658ev_loop_fork (EV_P) 1256ev_loop_fork (EV_P)
659{ 1257{
660 loop_fork (EV_A); 1258 postfork = 1; /* must be in line with ev_default_fork */
661} 1259}
662 1260
663#endif 1261#endif
664 1262
665#if EV_MULTIPLICITY 1263#if EV_MULTIPLICITY
666struct ev_loop default_loop_struct;
667static struct ev_loop *default_loop;
668
669struct ev_loop * 1264struct ev_loop *
1265ev_default_loop_init (unsigned int flags)
670#else 1266#else
671static int default_loop;
672
673int 1267int
1268ev_default_loop (unsigned int flags)
674#endif 1269#endif
675ev_default_loop (int methods)
676{ 1270{
677 if (sigpipe [0] == sigpipe [1])
678 if (pipe (sigpipe))
679 return 0;
680
681 if (!default_loop) 1271 if (!ev_default_loop_ptr)
682 { 1272 {
683#if EV_MULTIPLICITY 1273#if EV_MULTIPLICITY
684 struct ev_loop *loop = default_loop = &default_loop_struct; 1274 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
685#else 1275#else
686 default_loop = 1; 1276 ev_default_loop_ptr = 1;
687#endif 1277#endif
688 1278
689 loop_init (EV_A_ methods); 1279 loop_init (EV_A_ flags);
690 1280
691 if (ev_method (EV_A)) 1281 if (ev_backend (EV_A))
692 { 1282 {
693 ev_watcher_init (&sigev, sigcb);
694 ev_set_priority (&sigev, EV_MAXPRI);
695 siginit (EV_A);
696
697#ifndef WIN32 1283#ifndef _WIN32
698 ev_signal_init (&childev, childcb, SIGCHLD); 1284 ev_signal_init (&childev, childcb, SIGCHLD);
699 ev_set_priority (&childev, EV_MAXPRI); 1285 ev_set_priority (&childev, EV_MAXPRI);
700 ev_signal_start (EV_A_ &childev); 1286 ev_signal_start (EV_A_ &childev);
701 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1287 ev_unref (EV_A); /* child watcher should not keep loop alive */
702#endif 1288#endif
703 } 1289 }
704 else 1290 else
705 default_loop = 0; 1291 ev_default_loop_ptr = 0;
706 } 1292 }
707 1293
708 return default_loop; 1294 return ev_default_loop_ptr;
709} 1295}
710 1296
711void 1297void
712ev_default_destroy (void) 1298ev_default_destroy (void)
713{ 1299{
714#if EV_MULTIPLICITY 1300#if EV_MULTIPLICITY
715 struct ev_loop *loop = default_loop; 1301 struct ev_loop *loop = ev_default_loop_ptr;
716#endif 1302#endif
717 1303
1304#ifndef _WIN32
718 ev_ref (EV_A); /* child watcher */ 1305 ev_ref (EV_A); /* child watcher */
719 ev_signal_stop (EV_A_ &childev); 1306 ev_signal_stop (EV_A_ &childev);
720 1307#endif
721 ev_ref (EV_A); /* signal watcher */
722 ev_io_stop (EV_A_ &sigev);
723
724 close (sigpipe [0]); sigpipe [0] = 0;
725 close (sigpipe [1]); sigpipe [1] = 0;
726 1308
727 loop_destroy (EV_A); 1309 loop_destroy (EV_A);
728} 1310}
729 1311
730void 1312void
731ev_default_fork (EV_P) 1313ev_default_fork (void)
732{ 1314{
733 loop_fork (EV_A); 1315#if EV_MULTIPLICITY
1316 struct ev_loop *loop = ev_default_loop_ptr;
1317#endif
734 1318
735 ev_io_stop (EV_A_ &sigev); 1319 if (backend)
736 close (sigpipe [0]); 1320 postfork = 1; /* must be in line with ev_loop_fork */
737 close (sigpipe [1]);
738 pipe (sigpipe);
739
740 ev_ref (EV_A); /* signal watcher */
741 siginit (EV_A);
742} 1321}
743 1322
744/*****************************************************************************/ 1323/*****************************************************************************/
745 1324
746static void 1325void
1326ev_invoke (EV_P_ void *w, int revents)
1327{
1328 EV_CB_INVOKE ((W)w, revents);
1329}
1330
1331void inline_speed
747call_pending (EV_P) 1332call_pending (EV_P)
748{ 1333{
749 int pri; 1334 int pri;
750 1335
751 for (pri = NUMPRI; pri--; ) 1336 for (pri = NUMPRI; pri--; )
752 while (pendingcnt [pri]) 1337 while (pendingcnt [pri])
753 { 1338 {
754 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1339 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755 1340
756 if (p->w) 1341 if (expect_true (p->w))
757 { 1342 {
1343 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1344
758 p->w->pending = 0; 1345 p->w->pending = 0;
759 p->w->cb (EV_A_ p->w, p->events); 1346 EV_CB_INVOKE (p->w, p->events);
760 } 1347 }
761 } 1348 }
762} 1349}
763 1350
764static void 1351void inline_size
765timers_reify (EV_P) 1352timers_reify (EV_P)
766{ 1353{
767 while (timercnt && timers [0]->at <= mn_now) 1354 while (timercnt && ((WT)timers [0])->at <= mn_now)
768 { 1355 {
769 struct ev_timer *w = timers [0]; 1356 ev_timer *w = (ev_timer *)timers [0];
1357
1358 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
770 1359
771 /* first reschedule or stop timer */ 1360 /* first reschedule or stop timer */
772 if (w->repeat) 1361 if (w->repeat)
773 { 1362 {
774 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1363 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1364
775 w->at = mn_now + w->repeat; 1365 ((WT)w)->at += w->repeat;
1366 if (((WT)w)->at < mn_now)
1367 ((WT)w)->at = mn_now;
1368
776 downheap ((WT *)timers, timercnt, 0); 1369 downheap (timers, timercnt, 0);
777 } 1370 }
778 else 1371 else
779 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1372 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780 1373
781 event (EV_A_ (W)w, EV_TIMEOUT); 1374 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782 } 1375 }
783} 1376}
784 1377
785static void 1378#if EV_PERIODIC_ENABLE
1379void inline_size
786periodics_reify (EV_P) 1380periodics_reify (EV_P)
787{ 1381{
788 while (periodiccnt && periodics [0]->at <= rt_now) 1382 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789 { 1383 {
790 struct ev_periodic *w = periodics [0]; 1384 ev_periodic *w = (ev_periodic *)periodics [0];
1385
1386 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
791 1387
792 /* first reschedule or stop timer */ 1388 /* first reschedule or stop timer */
793 if (w->interval) 1389 if (w->reschedule_cb)
794 { 1390 {
1391 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1392 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1393 downheap (periodics, periodiccnt, 0);
1394 }
1395 else if (w->interval)
1396 {
795 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1397 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
796 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1399 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797 downheap ((WT *)periodics, periodiccnt, 0); 1400 downheap (periodics, periodiccnt, 0);
798 } 1401 }
799 else 1402 else
800 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1403 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801 1404
802 event (EV_A_ (W)w, EV_PERIODIC); 1405 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803 } 1406 }
804} 1407}
805 1408
806static void 1409static void noinline
807periodics_reschedule (EV_P) 1410periodics_reschedule (EV_P)
808{ 1411{
809 int i; 1412 int i;
810 1413
811 /* adjust periodics after time jump */ 1414 /* adjust periodics after time jump */
812 for (i = 0; i < periodiccnt; ++i) 1415 for (i = 0; i < periodiccnt; ++i)
813 { 1416 {
814 struct ev_periodic *w = periodics [i]; 1417 ev_periodic *w = (ev_periodic *)periodics [i];
815 1418
1419 if (w->reschedule_cb)
1420 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816 if (w->interval) 1421 else if (w->interval)
1422 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1423 }
1424
1425 /* now rebuild the heap */
1426 for (i = periodiccnt >> 1; i--; )
1427 downheap (periodics, periodiccnt, i);
1428}
1429#endif
1430
1431#if EV_IDLE_ENABLE
1432void inline_size
1433idle_reify (EV_P)
1434{
1435 if (expect_false (idleall))
1436 {
1437 int pri;
1438
1439 for (pri = NUMPRI; pri--; )
817 { 1440 {
818 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1441 if (pendingcnt [pri])
1442 break;
819 1443
820 if (fabs (diff) >= 1e-4) 1444 if (idlecnt [pri])
821 { 1445 {
822 ev_periodic_stop (EV_A_ w); 1446 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
823 ev_periodic_start (EV_A_ w); 1447 break;
824
825 i = 0; /* restart loop, inefficient, but time jumps should be rare */
826 } 1448 }
827 } 1449 }
828 } 1450 }
829} 1451}
1452#endif
830 1453
831inline int 1454void inline_speed
832time_update_monotonic (EV_P) 1455time_update (EV_P_ ev_tstamp max_block)
833{
834 mn_now = get_clock ();
835
836 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837 {
838 rt_now = rtmn_diff + mn_now;
839 return 0;
840 }
841 else
842 {
843 now_floor = mn_now;
844 rt_now = ev_time ();
845 return 1;
846 }
847}
848
849static void
850time_update (EV_P)
851{ 1456{
852 int i; 1457 int i;
853 1458
854#if EV_USE_MONOTONIC 1459#if EV_USE_MONOTONIC
855 if (expect_true (have_monotonic)) 1460 if (expect_true (have_monotonic))
856 { 1461 {
857 if (time_update_monotonic (EV_A)) 1462 ev_tstamp odiff = rtmn_diff;
1463
1464 mn_now = get_clock ();
1465
1466 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1467 /* interpolate in the meantime */
1468 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
858 { 1469 {
859 ev_tstamp odiff = rtmn_diff; 1470 ev_rt_now = rtmn_diff + mn_now;
1471 return;
1472 }
860 1473
1474 now_floor = mn_now;
1475 ev_rt_now = ev_time ();
1476
861 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1477 /* loop a few times, before making important decisions.
1478 * on the choice of "4": one iteration isn't enough,
1479 * in case we get preempted during the calls to
1480 * ev_time and get_clock. a second call is almost guaranteed
1481 * to succeed in that case, though. and looping a few more times
1482 * doesn't hurt either as we only do this on time-jumps or
1483 * in the unlikely event of having been preempted here.
1484 */
1485 for (i = 4; --i; )
862 { 1486 {
863 rtmn_diff = rt_now - mn_now; 1487 rtmn_diff = ev_rt_now - mn_now;
864 1488
865 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1489 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866 return; /* all is well */ 1490 return; /* all is well */
867 1491
868 rt_now = ev_time (); 1492 ev_rt_now = ev_time ();
869 mn_now = get_clock (); 1493 mn_now = get_clock ();
870 now_floor = mn_now; 1494 now_floor = mn_now;
871 } 1495 }
872 1496
1497# if EV_PERIODIC_ENABLE
1498 periodics_reschedule (EV_A);
1499# endif
1500 /* no timer adjustment, as the monotonic clock doesn't jump */
1501 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502 }
1503 else
1504#endif
1505 {
1506 ev_rt_now = ev_time ();
1507
1508 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1509 {
1510#if EV_PERIODIC_ENABLE
873 periodics_reschedule (EV_A); 1511 periodics_reschedule (EV_A);
874 /* no timer adjustment, as the monotonic clock doesn't jump */ 1512#endif
875 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1513 /* adjust timers. this is easy, as the offset is the same for all of them */
1514 for (i = 0; i < timercnt; ++i)
1515 ((WT)timers [i])->at += ev_rt_now - mn_now;
876 } 1516 }
877 }
878 else
879#endif
880 {
881 rt_now = ev_time ();
882 1517
883 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884 {
885 periodics_reschedule (EV_A);
886
887 /* adjust timers. this is easy, as the offset is the same for all */
888 for (i = 0; i < timercnt; ++i)
889 timers [i]->at += rt_now - mn_now;
890 }
891
892 mn_now = rt_now; 1518 mn_now = ev_rt_now;
893 } 1519 }
894} 1520}
895 1521
896void 1522void
897ev_ref (EV_P) 1523ev_ref (EV_P)
… …
908static int loop_done; 1534static int loop_done;
909 1535
910void 1536void
911ev_loop (EV_P_ int flags) 1537ev_loop (EV_P_ int flags)
912{ 1538{
913 double block;
914 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1539 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1540 ? EVUNLOOP_ONE
1541 : EVUNLOOP_CANCEL;
1542
1543 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
915 1544
916 do 1545 do
917 { 1546 {
1547#ifndef _WIN32
1548 if (expect_false (curpid)) /* penalise the forking check even more */
1549 if (expect_false (getpid () != curpid))
1550 {
1551 curpid = getpid ();
1552 postfork = 1;
1553 }
1554#endif
1555
1556#if EV_FORK_ENABLE
1557 /* we might have forked, so queue fork handlers */
1558 if (expect_false (postfork))
1559 if (forkcnt)
1560 {
1561 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1562 call_pending (EV_A);
1563 }
1564#endif
1565
918 /* queue check watchers (and execute them) */ 1566 /* queue prepare watchers (and execute them) */
919 if (expect_false (preparecnt)) 1567 if (expect_false (preparecnt))
920 { 1568 {
921 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1569 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922 call_pending (EV_A); 1570 call_pending (EV_A);
923 } 1571 }
924 1572
1573 if (expect_false (!activecnt))
1574 break;
1575
1576 /* we might have forked, so reify kernel state if necessary */
1577 if (expect_false (postfork))
1578 loop_fork (EV_A);
1579
925 /* update fd-related kernel structures */ 1580 /* update fd-related kernel structures */
926 fd_reify (EV_A); 1581 fd_reify (EV_A);
927 1582
928 /* calculate blocking time */ 1583 /* calculate blocking time */
1584 {
1585 ev_tstamp waittime = 0.;
1586 ev_tstamp sleeptime = 0.;
929 1587
930 /* we only need this for !monotonic clockor timers, but as we basically 1588 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
931 always have timers, we just calculate it always */
932#if EV_USE_MONOTONIC
933 if (expect_true (have_monotonic))
934 time_update_monotonic (EV_A);
935 else
936#endif
937 { 1589 {
938 rt_now = ev_time (); 1590 /* update time to cancel out callback processing overhead */
939 mn_now = rt_now; 1591 time_update (EV_A_ 1e100);
940 }
941 1592
942 if (flags & EVLOOP_NONBLOCK || idlecnt)
943 block = 0.;
944 else
945 {
946 block = MAX_BLOCKTIME; 1593 waittime = MAX_BLOCKTIME;
947 1594
948 if (timercnt) 1595 if (timercnt)
949 { 1596 {
950 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1597 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
951 if (block > to) block = to; 1598 if (waittime > to) waittime = to;
952 } 1599 }
953 1600
1601#if EV_PERIODIC_ENABLE
954 if (periodiccnt) 1602 if (periodiccnt)
955 { 1603 {
956 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1604 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
957 if (block > to) block = to; 1605 if (waittime > to) waittime = to;
958 } 1606 }
1607#endif
959 1608
960 if (block < 0.) block = 0.; 1609 if (expect_false (waittime < timeout_blocktime))
1610 waittime = timeout_blocktime;
1611
1612 sleeptime = waittime - backend_fudge;
1613
1614 if (expect_true (sleeptime > io_blocktime))
1615 sleeptime = io_blocktime;
1616
1617 if (sleeptime)
1618 {
1619 ev_sleep (sleeptime);
1620 waittime -= sleeptime;
1621 }
961 } 1622 }
962 1623
963 method_poll (EV_A_ block); 1624 ++loop_count;
1625 backend_poll (EV_A_ waittime);
964 1626
965 /* update rt_now, do magic */ 1627 /* update ev_rt_now, do magic */
966 time_update (EV_A); 1628 time_update (EV_A_ waittime + sleeptime);
1629 }
967 1630
968 /* queue pending timers and reschedule them */ 1631 /* queue pending timers and reschedule them */
969 timers_reify (EV_A); /* relative timers called last */ 1632 timers_reify (EV_A); /* relative timers called last */
1633#if EV_PERIODIC_ENABLE
970 periodics_reify (EV_A); /* absolute timers called first */ 1634 periodics_reify (EV_A); /* absolute timers called first */
1635#endif
971 1636
1637#if EV_IDLE_ENABLE
972 /* queue idle watchers unless io or timers are pending */ 1638 /* queue idle watchers unless other events are pending */
973 if (!pendingcnt) 1639 idle_reify (EV_A);
974 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1640#endif
975 1641
976 /* queue check watchers, to be executed first */ 1642 /* queue check watchers, to be executed first */
977 if (checkcnt) 1643 if (expect_false (checkcnt))
978 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1644 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979 1645
980 call_pending (EV_A); 1646 call_pending (EV_A);
1647
981 } 1648 }
982 while (activecnt && !loop_done); 1649 while (expect_true (activecnt && !loop_done));
983 1650
984 if (loop_done != 2) 1651 if (loop_done == EVUNLOOP_ONE)
985 loop_done = 0; 1652 loop_done = EVUNLOOP_CANCEL;
986} 1653}
987 1654
988void 1655void
989ev_unloop (EV_P_ int how) 1656ev_unloop (EV_P_ int how)
990{ 1657{
991 loop_done = how; 1658 loop_done = how;
992} 1659}
993 1660
994/*****************************************************************************/ 1661/*****************************************************************************/
995 1662
996inline void 1663void inline_size
997wlist_add (WL *head, WL elem) 1664wlist_add (WL *head, WL elem)
998{ 1665{
999 elem->next = *head; 1666 elem->next = *head;
1000 *head = elem; 1667 *head = elem;
1001} 1668}
1002 1669
1003inline void 1670void inline_size
1004wlist_del (WL *head, WL elem) 1671wlist_del (WL *head, WL elem)
1005{ 1672{
1006 while (*head) 1673 while (*head)
1007 { 1674 {
1008 if (*head == elem) 1675 if (*head == elem)
… …
1013 1680
1014 head = &(*head)->next; 1681 head = &(*head)->next;
1015 } 1682 }
1016} 1683}
1017 1684
1018inline void 1685void inline_speed
1019ev_clear_pending (EV_P_ W w) 1686clear_pending (EV_P_ W w)
1020{ 1687{
1021 if (w->pending) 1688 if (w->pending)
1022 { 1689 {
1023 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1690 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1024 w->pending = 0; 1691 w->pending = 0;
1025 } 1692 }
1026} 1693}
1027 1694
1028inline void 1695int
1696ev_clear_pending (EV_P_ void *w)
1697{
1698 W w_ = (W)w;
1699 int pending = w_->pending;
1700
1701 if (expect_true (pending))
1702 {
1703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1704 w_->pending = 0;
1705 p->w = 0;
1706 return p->events;
1707 }
1708 else
1709 return 0;
1710}
1711
1712void inline_size
1713pri_adjust (EV_P_ W w)
1714{
1715 int pri = w->priority;
1716 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1718 w->priority = pri;
1719}
1720
1721void inline_speed
1029ev_start (EV_P_ W w, int active) 1722ev_start (EV_P_ W w, int active)
1030{ 1723{
1031 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1724 pri_adjust (EV_A_ w);
1032 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1033
1034 w->active = active; 1725 w->active = active;
1035 ev_ref (EV_A); 1726 ev_ref (EV_A);
1036} 1727}
1037 1728
1038inline void 1729void inline_size
1039ev_stop (EV_P_ W w) 1730ev_stop (EV_P_ W w)
1040{ 1731{
1041 ev_unref (EV_A); 1732 ev_unref (EV_A);
1042 w->active = 0; 1733 w->active = 0;
1043} 1734}
1044 1735
1045/*****************************************************************************/ 1736/*****************************************************************************/
1046 1737
1047void 1738void noinline
1048ev_io_start (EV_P_ struct ev_io *w) 1739ev_io_start (EV_P_ ev_io *w)
1049{ 1740{
1050 int fd = w->fd; 1741 int fd = w->fd;
1051 1742
1052 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1053 return; 1744 return;
1054 1745
1055 assert (("ev_io_start called with negative fd", fd >= 0)); 1746 assert (("ev_io_start called with negative fd", fd >= 0));
1056 1747
1057 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1058 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1749 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1750 wlist_add (&anfds[fd].head, (WL)w);
1060 1751
1061 fd_change (EV_A_ fd); 1752 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1753 w->events &= ~EV_IOFDSET;
1062} 1754}
1063 1755
1064void 1756void noinline
1065ev_io_stop (EV_P_ struct ev_io *w) 1757ev_io_stop (EV_P_ ev_io *w)
1066{ 1758{
1067 ev_clear_pending (EV_A_ (W)w); 1759 clear_pending (EV_A_ (W)w);
1068 if (!ev_is_active (w)) 1760 if (expect_false (!ev_is_active (w)))
1069 return; 1761 return;
1070 1762
1763 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1764
1071 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1765 wlist_del (&anfds[w->fd].head, (WL)w);
1072 ev_stop (EV_A_ (W)w); 1766 ev_stop (EV_A_ (W)w);
1073 1767
1074 fd_change (EV_A_ w->fd); 1768 fd_change (EV_A_ w->fd, 1);
1075} 1769}
1076 1770
1077void 1771void noinline
1078ev_timer_start (EV_P_ struct ev_timer *w) 1772ev_timer_start (EV_P_ ev_timer *w)
1079{ 1773{
1080 if (ev_is_active (w)) 1774 if (expect_false (ev_is_active (w)))
1081 return; 1775 return;
1082 1776
1083 w->at += mn_now; 1777 ((WT)w)->at += mn_now;
1084 1778
1085 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1779 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086 1780
1087 ev_start (EV_A_ (W)w, ++timercnt); 1781 ev_start (EV_A_ (W)w, ++timercnt);
1088 array_needsize (timers, timermax, timercnt, ); 1782 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1089 timers [timercnt - 1] = w; 1783 timers [timercnt - 1] = (WT)w;
1090 upheap ((WT *)timers, timercnt - 1); 1784 upheap (timers, timercnt - 1);
1091}
1092 1785
1093void 1786 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1787}
1788
1789void noinline
1094ev_timer_stop (EV_P_ struct ev_timer *w) 1790ev_timer_stop (EV_P_ ev_timer *w)
1095{ 1791{
1096 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1097 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1098 return; 1794 return;
1099 1795
1100 if (w->active < timercnt--) 1796 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1797
1798 {
1799 int active = ((W)w)->active;
1800
1801 if (expect_true (--active < --timercnt))
1101 { 1802 {
1102 timers [w->active - 1] = timers [timercnt]; 1803 timers [active] = timers [timercnt];
1103 downheap ((WT *)timers, timercnt, w->active - 1); 1804 adjustheap (timers, timercnt, active);
1104 } 1805 }
1806 }
1105 1807
1106 w->at = w->repeat; 1808 ((WT)w)->at -= mn_now;
1107 1809
1108 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1109} 1811}
1110 1812
1111void 1813void noinline
1112ev_timer_again (EV_P_ struct ev_timer *w) 1814ev_timer_again (EV_P_ ev_timer *w)
1113{ 1815{
1114 if (ev_is_active (w)) 1816 if (ev_is_active (w))
1115 { 1817 {
1116 if (w->repeat) 1818 if (w->repeat)
1117 { 1819 {
1118 w->at = mn_now + w->repeat; 1820 ((WT)w)->at = mn_now + w->repeat;
1119 downheap ((WT *)timers, timercnt, w->active - 1); 1821 adjustheap (timers, timercnt, ((W)w)->active - 1);
1120 } 1822 }
1121 else 1823 else
1122 ev_timer_stop (EV_A_ w); 1824 ev_timer_stop (EV_A_ w);
1123 } 1825 }
1124 else if (w->repeat) 1826 else if (w->repeat)
1827 {
1828 w->at = w->repeat;
1125 ev_timer_start (EV_A_ w); 1829 ev_timer_start (EV_A_ w);
1830 }
1126} 1831}
1127 1832
1128void 1833#if EV_PERIODIC_ENABLE
1834void noinline
1129ev_periodic_start (EV_P_ struct ev_periodic *w) 1835ev_periodic_start (EV_P_ ev_periodic *w)
1130{ 1836{
1131 if (ev_is_active (w)) 1837 if (expect_false (ev_is_active (w)))
1132 return; 1838 return;
1133 1839
1840 if (w->reschedule_cb)
1841 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1842 else if (w->interval)
1843 {
1134 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1844 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136 /* this formula differs from the one in periodic_reify because we do not always round up */ 1845 /* this formula differs from the one in periodic_reify because we do not always round up */
1137 if (w->interval)
1138 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1846 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1847 }
1848 else
1849 ((WT)w)->at = w->offset;
1139 1850
1140 ev_start (EV_A_ (W)w, ++periodiccnt); 1851 ev_start (EV_A_ (W)w, ++periodiccnt);
1141 array_needsize (periodics, periodicmax, periodiccnt, ); 1852 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1142 periodics [periodiccnt - 1] = w; 1853 periodics [periodiccnt - 1] = (WT)w;
1143 upheap ((WT *)periodics, periodiccnt - 1); 1854 upheap (periodics, periodiccnt - 1);
1144}
1145 1855
1146void 1856 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1857}
1858
1859void noinline
1147ev_periodic_stop (EV_P_ struct ev_periodic *w) 1860ev_periodic_stop (EV_P_ ev_periodic *w)
1148{ 1861{
1149 ev_clear_pending (EV_A_ (W)w); 1862 clear_pending (EV_A_ (W)w);
1150 if (!ev_is_active (w)) 1863 if (expect_false (!ev_is_active (w)))
1151 return; 1864 return;
1152 1865
1153 if (w->active < periodiccnt--) 1866 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1867
1868 {
1869 int active = ((W)w)->active;
1870
1871 if (expect_true (--active < --periodiccnt))
1154 { 1872 {
1155 periodics [w->active - 1] = periodics [periodiccnt]; 1873 periodics [active] = periodics [periodiccnt];
1156 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1874 adjustheap (periodics, periodiccnt, active);
1157 } 1875 }
1876 }
1158 1877
1159 ev_stop (EV_A_ (W)w); 1878 ev_stop (EV_A_ (W)w);
1160} 1879}
1161 1880
1162void 1881void noinline
1163ev_idle_start (EV_P_ struct ev_idle *w) 1882ev_periodic_again (EV_P_ ev_periodic *w)
1164{ 1883{
1165 if (ev_is_active (w)) 1884 /* TODO: use adjustheap and recalculation */
1166 return;
1167
1168 ev_start (EV_A_ (W)w, ++idlecnt);
1169 array_needsize (idles, idlemax, idlecnt, );
1170 idles [idlecnt - 1] = w;
1171}
1172
1173void
1174ev_idle_stop (EV_P_ struct ev_idle *w)
1175{
1176 ev_clear_pending (EV_A_ (W)w);
1177 if (ev_is_active (w))
1178 return;
1179
1180 idles [w->active - 1] = idles [--idlecnt];
1181 ev_stop (EV_A_ (W)w); 1885 ev_periodic_stop (EV_A_ w);
1886 ev_periodic_start (EV_A_ w);
1182} 1887}
1183 1888#endif
1184void
1185ev_prepare_start (EV_P_ struct ev_prepare *w)
1186{
1187 if (ev_is_active (w))
1188 return;
1189
1190 ev_start (EV_A_ (W)w, ++preparecnt);
1191 array_needsize (prepares, preparemax, preparecnt, );
1192 prepares [preparecnt - 1] = w;
1193}
1194
1195void
1196ev_prepare_stop (EV_P_ struct ev_prepare *w)
1197{
1198 ev_clear_pending (EV_A_ (W)w);
1199 if (ev_is_active (w))
1200 return;
1201
1202 prepares [w->active - 1] = prepares [--preparecnt];
1203 ev_stop (EV_A_ (W)w);
1204}
1205
1206void
1207ev_check_start (EV_P_ struct ev_check *w)
1208{
1209 if (ev_is_active (w))
1210 return;
1211
1212 ev_start (EV_A_ (W)w, ++checkcnt);
1213 array_needsize (checks, checkmax, checkcnt, );
1214 checks [checkcnt - 1] = w;
1215}
1216
1217void
1218ev_check_stop (EV_P_ struct ev_check *w)
1219{
1220 ev_clear_pending (EV_A_ (W)w);
1221 if (ev_is_active (w))
1222 return;
1223
1224 checks [w->active - 1] = checks [--checkcnt];
1225 ev_stop (EV_A_ (W)w);
1226}
1227 1889
1228#ifndef SA_RESTART 1890#ifndef SA_RESTART
1229# define SA_RESTART 0 1891# define SA_RESTART 0
1230#endif 1892#endif
1231 1893
1232void 1894void noinline
1233ev_signal_start (EV_P_ struct ev_signal *w) 1895ev_signal_start (EV_P_ ev_signal *w)
1234{ 1896{
1235#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1236 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1898 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1237#endif 1899#endif
1238 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1239 return; 1901 return;
1240 1902
1241 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1903 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242 1904
1905 evpipe_init (EV_A);
1906
1907 {
1908#ifndef _WIN32
1909 sigset_t full, prev;
1910 sigfillset (&full);
1911 sigprocmask (SIG_SETMASK, &full, &prev);
1912#endif
1913
1914 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1915
1916#ifndef _WIN32
1917 sigprocmask (SIG_SETMASK, &prev, 0);
1918#endif
1919 }
1920
1243 ev_start (EV_A_ (W)w, 1); 1921 ev_start (EV_A_ (W)w, 1);
1244 array_needsize (signals, signalmax, w->signum, signals_init);
1245 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1922 wlist_add (&signals [w->signum - 1].head, (WL)w);
1246 1923
1247 if (!w->next) 1924 if (!((WL)w)->next)
1248 { 1925 {
1926#if _WIN32
1927 signal (w->signum, sighandler);
1928#else
1249 struct sigaction sa; 1929 struct sigaction sa;
1250 sa.sa_handler = sighandler; 1930 sa.sa_handler = sighandler;
1251 sigfillset (&sa.sa_mask); 1931 sigfillset (&sa.sa_mask);
1252 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1932 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253 sigaction (w->signum, &sa, 0); 1933 sigaction (w->signum, &sa, 0);
1934#endif
1254 } 1935 }
1255} 1936}
1256 1937
1257void 1938void noinline
1258ev_signal_stop (EV_P_ struct ev_signal *w) 1939ev_signal_stop (EV_P_ ev_signal *w)
1259{ 1940{
1260 ev_clear_pending (EV_A_ (W)w); 1941 clear_pending (EV_A_ (W)w);
1261 if (!ev_is_active (w)) 1942 if (expect_false (!ev_is_active (w)))
1262 return; 1943 return;
1263 1944
1264 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1945 wlist_del (&signals [w->signum - 1].head, (WL)w);
1265 ev_stop (EV_A_ (W)w); 1946 ev_stop (EV_A_ (W)w);
1266 1947
1267 if (!signals [w->signum - 1].head) 1948 if (!signals [w->signum - 1].head)
1268 signal (w->signum, SIG_DFL); 1949 signal (w->signum, SIG_DFL);
1269} 1950}
1270 1951
1271void 1952void
1272ev_child_start (EV_P_ struct ev_child *w) 1953ev_child_start (EV_P_ ev_child *w)
1273{ 1954{
1274#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1275 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1956 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1276#endif 1957#endif
1277 if (ev_is_active (w)) 1958 if (expect_false (ev_is_active (w)))
1278 return; 1959 return;
1279 1960
1280 ev_start (EV_A_ (W)w, 1); 1961 ev_start (EV_A_ (W)w, 1);
1281 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1962 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1282} 1963}
1283 1964
1284void 1965void
1285ev_child_stop (EV_P_ struct ev_child *w) 1966ev_child_stop (EV_P_ ev_child *w)
1286{ 1967{
1287 ev_clear_pending (EV_A_ (W)w); 1968 clear_pending (EV_A_ (W)w);
1288 if (ev_is_active (w)) 1969 if (expect_false (!ev_is_active (w)))
1289 return; 1970 return;
1290 1971
1291 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1972 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1292 ev_stop (EV_A_ (W)w); 1973 ev_stop (EV_A_ (W)w);
1293} 1974}
1294 1975
1976#if EV_STAT_ENABLE
1977
1978# ifdef _WIN32
1979# undef lstat
1980# define lstat(a,b) _stati64 (a,b)
1981# endif
1982
1983#define DEF_STAT_INTERVAL 5.0074891
1984#define MIN_STAT_INTERVAL 0.1074891
1985
1986static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1987
1988#if EV_USE_INOTIFY
1989# define EV_INOTIFY_BUFSIZE 8192
1990
1991static void noinline
1992infy_add (EV_P_ ev_stat *w)
1993{
1994 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);
1995
1996 if (w->wd < 0)
1997 {
1998 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1999
2000 /* monitor some parent directory for speedup hints */
2001 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2002 {
2003 char path [4096];
2004 strcpy (path, w->path);
2005
2006 do
2007 {
2008 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2009 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2010
2011 char *pend = strrchr (path, '/');
2012
2013 if (!pend)
2014 break; /* whoops, no '/', complain to your admin */
2015
2016 *pend = 0;
2017 w->wd = inotify_add_watch (fs_fd, path, mask);
2018 }
2019 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2020 }
2021 }
2022 else
2023 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2024
2025 if (w->wd >= 0)
2026 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2027}
2028
2029static void noinline
2030infy_del (EV_P_ ev_stat *w)
2031{
2032 int slot;
2033 int wd = w->wd;
2034
2035 if (wd < 0)
2036 return;
2037
2038 w->wd = -2;
2039 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2040 wlist_del (&fs_hash [slot].head, (WL)w);
2041
2042 /* remove this watcher, if others are watching it, they will rearm */
2043 inotify_rm_watch (fs_fd, wd);
2044}
2045
2046static void noinline
2047infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2048{
2049 if (slot < 0)
2050 /* overflow, need to check for all hahs slots */
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 infy_wd (EV_A_ slot, wd, ev);
2053 else
2054 {
2055 WL w_;
2056
2057 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2058 {
2059 ev_stat *w = (ev_stat *)w_;
2060 w_ = w_->next; /* lets us remove this watcher and all before it */
2061
2062 if (w->wd == wd || wd == -1)
2063 {
2064 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2065 {
2066 w->wd = -1;
2067 infy_add (EV_A_ w); /* re-add, no matter what */
2068 }
2069
2070 stat_timer_cb (EV_A_ &w->timer, 0);
2071 }
2072 }
2073 }
2074}
2075
2076static void
2077infy_cb (EV_P_ ev_io *w, int revents)
2078{
2079 char buf [EV_INOTIFY_BUFSIZE];
2080 struct inotify_event *ev = (struct inotify_event *)buf;
2081 int ofs;
2082 int len = read (fs_fd, buf, sizeof (buf));
2083
2084 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2085 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2086}
2087
2088void inline_size
2089infy_init (EV_P)
2090{
2091 if (fs_fd != -2)
2092 return;
2093
2094 fs_fd = inotify_init ();
2095
2096 if (fs_fd >= 0)
2097 {
2098 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2099 ev_set_priority (&fs_w, EV_MAXPRI);
2100 ev_io_start (EV_A_ &fs_w);
2101 }
2102}
2103
2104void inline_size
2105infy_fork (EV_P)
2106{
2107 int slot;
2108
2109 if (fs_fd < 0)
2110 return;
2111
2112 close (fs_fd);
2113 fs_fd = inotify_init ();
2114
2115 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2116 {
2117 WL w_ = fs_hash [slot].head;
2118 fs_hash [slot].head = 0;
2119
2120 while (w_)
2121 {
2122 ev_stat *w = (ev_stat *)w_;
2123 w_ = w_->next; /* lets us add this watcher */
2124
2125 w->wd = -1;
2126
2127 if (fs_fd >= 0)
2128 infy_add (EV_A_ w); /* re-add, no matter what */
2129 else
2130 ev_timer_start (EV_A_ &w->timer);
2131 }
2132
2133 }
2134}
2135
2136#endif
2137
2138void
2139ev_stat_stat (EV_P_ ev_stat *w)
2140{
2141 if (lstat (w->path, &w->attr) < 0)
2142 w->attr.st_nlink = 0;
2143 else if (!w->attr.st_nlink)
2144 w->attr.st_nlink = 1;
2145}
2146
2147static void noinline
2148stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2149{
2150 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2151
2152 /* we copy this here each the time so that */
2153 /* prev has the old value when the callback gets invoked */
2154 w->prev = w->attr;
2155 ev_stat_stat (EV_A_ w);
2156
2157 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2158 if (
2159 w->prev.st_dev != w->attr.st_dev
2160 || w->prev.st_ino != w->attr.st_ino
2161 || w->prev.st_mode != w->attr.st_mode
2162 || w->prev.st_nlink != w->attr.st_nlink
2163 || w->prev.st_uid != w->attr.st_uid
2164 || w->prev.st_gid != w->attr.st_gid
2165 || w->prev.st_rdev != w->attr.st_rdev
2166 || w->prev.st_size != w->attr.st_size
2167 || w->prev.st_atime != w->attr.st_atime
2168 || w->prev.st_mtime != w->attr.st_mtime
2169 || w->prev.st_ctime != w->attr.st_ctime
2170 ) {
2171 #if EV_USE_INOTIFY
2172 infy_del (EV_A_ w);
2173 infy_add (EV_A_ w);
2174 ev_stat_stat (EV_A_ w); /* avoid race... */
2175 #endif
2176
2177 ev_feed_event (EV_A_ w, EV_STAT);
2178 }
2179}
2180
2181void
2182ev_stat_start (EV_P_ ev_stat *w)
2183{
2184 if (expect_false (ev_is_active (w)))
2185 return;
2186
2187 /* since we use memcmp, we need to clear any padding data etc. */
2188 memset (&w->prev, 0, sizeof (ev_statdata));
2189 memset (&w->attr, 0, sizeof (ev_statdata));
2190
2191 ev_stat_stat (EV_A_ w);
2192
2193 if (w->interval < MIN_STAT_INTERVAL)
2194 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2195
2196 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2197 ev_set_priority (&w->timer, ev_priority (w));
2198
2199#if EV_USE_INOTIFY
2200 infy_init (EV_A);
2201
2202 if (fs_fd >= 0)
2203 infy_add (EV_A_ w);
2204 else
2205#endif
2206 ev_timer_start (EV_A_ &w->timer);
2207
2208 ev_start (EV_A_ (W)w, 1);
2209}
2210
2211void
2212ev_stat_stop (EV_P_ ev_stat *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218#if EV_USE_INOTIFY
2219 infy_del (EV_A_ w);
2220#endif
2221 ev_timer_stop (EV_A_ &w->timer);
2222
2223 ev_stop (EV_A_ (W)w);
2224}
2225#endif
2226
2227#if EV_IDLE_ENABLE
2228void
2229ev_idle_start (EV_P_ ev_idle *w)
2230{
2231 if (expect_false (ev_is_active (w)))
2232 return;
2233
2234 pri_adjust (EV_A_ (W)w);
2235
2236 {
2237 int active = ++idlecnt [ABSPRI (w)];
2238
2239 ++idleall;
2240 ev_start (EV_A_ (W)w, active);
2241
2242 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2243 idles [ABSPRI (w)][active - 1] = w;
2244 }
2245}
2246
2247void
2248ev_idle_stop (EV_P_ ev_idle *w)
2249{
2250 clear_pending (EV_A_ (W)w);
2251 if (expect_false (!ev_is_active (w)))
2252 return;
2253
2254 {
2255 int active = ((W)w)->active;
2256
2257 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2258 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2259
2260 ev_stop (EV_A_ (W)w);
2261 --idleall;
2262 }
2263}
2264#endif
2265
2266void
2267ev_prepare_start (EV_P_ ev_prepare *w)
2268{
2269 if (expect_false (ev_is_active (w)))
2270 return;
2271
2272 ev_start (EV_A_ (W)w, ++preparecnt);
2273 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2274 prepares [preparecnt - 1] = w;
2275}
2276
2277void
2278ev_prepare_stop (EV_P_ ev_prepare *w)
2279{
2280 clear_pending (EV_A_ (W)w);
2281 if (expect_false (!ev_is_active (w)))
2282 return;
2283
2284 {
2285 int active = ((W)w)->active;
2286 prepares [active - 1] = prepares [--preparecnt];
2287 ((W)prepares [active - 1])->active = active;
2288 }
2289
2290 ev_stop (EV_A_ (W)w);
2291}
2292
2293void
2294ev_check_start (EV_P_ ev_check *w)
2295{
2296 if (expect_false (ev_is_active (w)))
2297 return;
2298
2299 ev_start (EV_A_ (W)w, ++checkcnt);
2300 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2301 checks [checkcnt - 1] = w;
2302}
2303
2304void
2305ev_check_stop (EV_P_ ev_check *w)
2306{
2307 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w)))
2309 return;
2310
2311 {
2312 int active = ((W)w)->active;
2313 checks [active - 1] = checks [--checkcnt];
2314 ((W)checks [active - 1])->active = active;
2315 }
2316
2317 ev_stop (EV_A_ (W)w);
2318}
2319
2320#if EV_EMBED_ENABLE
2321void noinline
2322ev_embed_sweep (EV_P_ ev_embed *w)
2323{
2324 ev_loop (w->other, EVLOOP_NONBLOCK);
2325}
2326
2327static void
2328embed_io_cb (EV_P_ ev_io *io, int revents)
2329{
2330 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2331
2332 if (ev_cb (w))
2333 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2334 else
2335 ev_loop (w->other, EVLOOP_NONBLOCK);
2336}
2337
2338static void
2339embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2340{
2341 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2342
2343 {
2344 struct ev_loop *loop = w->other;
2345
2346 while (fdchangecnt)
2347 {
2348 fd_reify (EV_A);
2349 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2350 }
2351 }
2352}
2353
2354#if 0
2355static void
2356embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2357{
2358 ev_idle_stop (EV_A_ idle);
2359}
2360#endif
2361
2362void
2363ev_embed_start (EV_P_ ev_embed *w)
2364{
2365 if (expect_false (ev_is_active (w)))
2366 return;
2367
2368 {
2369 struct ev_loop *loop = w->other;
2370 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2371 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2372 }
2373
2374 ev_set_priority (&w->io, ev_priority (w));
2375 ev_io_start (EV_A_ &w->io);
2376
2377 ev_prepare_init (&w->prepare, embed_prepare_cb);
2378 ev_set_priority (&w->prepare, EV_MINPRI);
2379 ev_prepare_start (EV_A_ &w->prepare);
2380
2381 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382
2383 ev_start (EV_A_ (W)w, 1);
2384}
2385
2386void
2387ev_embed_stop (EV_P_ ev_embed *w)
2388{
2389 clear_pending (EV_A_ (W)w);
2390 if (expect_false (!ev_is_active (w)))
2391 return;
2392
2393 ev_io_stop (EV_A_ &w->io);
2394 ev_prepare_stop (EV_A_ &w->prepare);
2395
2396 ev_stop (EV_A_ (W)w);
2397}
2398#endif
2399
2400#if EV_FORK_ENABLE
2401void
2402ev_fork_start (EV_P_ ev_fork *w)
2403{
2404 if (expect_false (ev_is_active (w)))
2405 return;
2406
2407 ev_start (EV_A_ (W)w, ++forkcnt);
2408 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2409 forks [forkcnt - 1] = w;
2410}
2411
2412void
2413ev_fork_stop (EV_P_ ev_fork *w)
2414{
2415 clear_pending (EV_A_ (W)w);
2416 if (expect_false (!ev_is_active (w)))
2417 return;
2418
2419 {
2420 int active = ((W)w)->active;
2421 forks [active - 1] = forks [--forkcnt];
2422 ((W)forks [active - 1])->active = active;
2423 }
2424
2425 ev_stop (EV_A_ (W)w);
2426}
2427#endif
2428
2429#if EV_ASYNC_ENABLE
2430void
2431ev_async_start (EV_P_ ev_async *w)
2432{
2433 if (expect_false (ev_is_active (w)))
2434 return;
2435
2436 evpipe_init (EV_A);
2437
2438 ev_start (EV_A_ (W)w, ++asynccnt);
2439 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440 asyncs [asynccnt - 1] = w;
2441}
2442
2443void
2444ev_async_stop (EV_P_ ev_async *w)
2445{
2446 clear_pending (EV_A_ (W)w);
2447 if (expect_false (!ev_is_active (w)))
2448 return;
2449
2450 {
2451 int active = ((W)w)->active;
2452 asyncs [active - 1] = asyncs [--asynccnt];
2453 ((W)asyncs [active - 1])->active = active;
2454 }
2455
2456 ev_stop (EV_A_ (W)w);
2457}
2458
2459void
2460ev_async_send (EV_P_ ev_async *w)
2461{
2462 w->sent = 1;
2463 evpipe_write (EV_A_ 0, 1);
2464}
2465#endif
2466
1295/*****************************************************************************/ 2467/*****************************************************************************/
1296 2468
1297struct ev_once 2469struct ev_once
1298{ 2470{
1299 struct ev_io io; 2471 ev_io io;
1300 struct ev_timer to; 2472 ev_timer to;
1301 void (*cb)(int revents, void *arg); 2473 void (*cb)(int revents, void *arg);
1302 void *arg; 2474 void *arg;
1303}; 2475};
1304 2476
1305static void 2477static void
… …
1308 void (*cb)(int revents, void *arg) = once->cb; 2480 void (*cb)(int revents, void *arg) = once->cb;
1309 void *arg = once->arg; 2481 void *arg = once->arg;
1310 2482
1311 ev_io_stop (EV_A_ &once->io); 2483 ev_io_stop (EV_A_ &once->io);
1312 ev_timer_stop (EV_A_ &once->to); 2484 ev_timer_stop (EV_A_ &once->to);
1313 free (once); 2485 ev_free (once);
1314 2486
1315 cb (revents, arg); 2487 cb (revents, arg);
1316} 2488}
1317 2489
1318static void 2490static void
1319once_cb_io (EV_P_ struct ev_io *w, int revents) 2491once_cb_io (EV_P_ ev_io *w, int revents)
1320{ 2492{
1321 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2493 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1322} 2494}
1323 2495
1324static void 2496static void
1325once_cb_to (EV_P_ struct ev_timer *w, int revents) 2497once_cb_to (EV_P_ ev_timer *w, int revents)
1326{ 2498{
1327 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2499 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1328} 2500}
1329 2501
1330void 2502void
1331ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2503ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1332{ 2504{
1333 struct ev_once *once = malloc (sizeof (struct ev_once)); 2505 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1334 2506
1335 if (!once) 2507 if (expect_false (!once))
2508 {
1336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2509 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1337 else 2510 return;
1338 { 2511 }
2512
1339 once->cb = cb; 2513 once->cb = cb;
1340 once->arg = arg; 2514 once->arg = arg;
1341 2515
1342 ev_watcher_init (&once->io, once_cb_io); 2516 ev_init (&once->io, once_cb_io);
1343 if (fd >= 0) 2517 if (fd >= 0)
1344 { 2518 {
1345 ev_io_set (&once->io, fd, events); 2519 ev_io_set (&once->io, fd, events);
1346 ev_io_start (EV_A_ &once->io); 2520 ev_io_start (EV_A_ &once->io);
1347 } 2521 }
1348 2522
1349 ev_watcher_init (&once->to, once_cb_to); 2523 ev_init (&once->to, once_cb_to);
1350 if (timeout >= 0.) 2524 if (timeout >= 0.)
1351 { 2525 {
1352 ev_timer_set (&once->to, timeout, 0.); 2526 ev_timer_set (&once->to, timeout, 0.);
1353 ev_timer_start (EV_A_ &once->to); 2527 ev_timer_start (EV_A_ &once->to);
1354 }
1355 } 2528 }
1356} 2529}
1357 2530
2531#if EV_MULTIPLICITY
2532 #include "ev_wrap.h"
2533#endif
2534
2535#ifdef __cplusplus
2536}
2537#endif
2538

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