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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

… …
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 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 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
36#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
37# include "config.h" 48# include "config.h"
49# endif
38 50
39# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 52# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
42# endif 54# endif
43# ifndef EV_USE_REALTIME 55# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 56# define EV_USE_REALTIME 1
45# endif 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
46# endif 65# endif
47 66
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
50# endif 73# endif
51 74
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
54# endif 81# endif
55 82
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
58# endif 89# endif
59 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
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 101# 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
62# endif 121# endif
63 122
64#endif 123#endif
65 124
66#include <math.h> 125#include <math.h>
… …
75#include <sys/types.h> 134#include <sys/types.h>
76#include <time.h> 135#include <time.h>
77 136
78#include <signal.h> 137#include <signal.h>
79 138
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 139#ifdef EV_H
141# include EV_H 140# include EV_H
142#else 141#else
143# include "ev.h" 142# include "ev.h"
144#endif 143#endif
145 144
145#ifndef _WIN32
146# include <sys/time.h>
147# include <sys/wait.h>
148# include <unistd.h>
149#else
150# define WIN32_LEAN_AND_MEAN
151# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1
154# endif
155#endif
156
157/**/
158
159#ifndef EV_USE_MONOTONIC
160# define EV_USE_MONOTONIC 0
161#endif
162
163#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0
165#endif
166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
171#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1
173#endif
174
175#ifndef EV_USE_POLL
176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
180# endif
181#endif
182
183#ifndef EV_USE_EPOLL
184# define EV_USE_EPOLL 0
185#endif
186
187#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0
189#endif
190
191#ifndef EV_USE_PORT
192# define EV_USE_PORT 0
193#endif
194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
213#endif
214
215/**/
216
217#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0
220#endif
221
222#ifndef CLOCK_REALTIME
223# undef EV_USE_REALTIME
224# define EV_USE_REALTIME 0
225#endif
226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
242#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h>
244#endif
245
246/**/
247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261
146#if __GNUC__ >= 3 262#if __GNUC__ >= 4
147# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 264# define noinline __attribute__ ((noinline))
149#else 265#else
150# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
151# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
152#endif 271#endif
153 272
154#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
155#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
156 282
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
160typedef struct ev_watcher *W; 289typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
163 292
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 */
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
165 298
166#ifdef WIN32 299#ifdef _WIN32
167# include "ev_win32.c" 300# include "ev_win32.c"
168#endif 301#endif
169 302
170/*****************************************************************************/ 303/*****************************************************************************/
171 304
172static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
173 306
307void
174void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
175{ 309{
176 syserr_cb = cb; 310 syserr_cb = cb;
177} 311}
178 312
179static void 313static void noinline
180syserr (const char *msg) 314syserr (const char *msg)
181{ 315{
182 if (!msg) 316 if (!msg)
183 msg = "(libev) system error"; 317 msg = "(libev) system error";
184 318
… …
191 } 325 }
192} 326}
193 327
194static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
195 329
330void
196void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
197{ 332{
198 alloc = cb; 333 alloc = cb;
199} 334}
200 335
201static void * 336inline_speed void *
202ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
203{ 338{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205 340
206 if (!ptr && size) 341 if (!ptr && size)
… …
220typedef struct 355typedef struct
221{ 356{
222 WL head; 357 WL head;
223 unsigned char events; 358 unsigned char events;
224 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
225} ANFD; 363} ANFD;
226 364
227typedef struct 365typedef struct
228{ 366{
229 W w; 367 W w;
230 int events; 368 int events;
231} ANPENDING; 369} ANPENDING;
232 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
233#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
234 379
235 struct ev_loop 380 struct ev_loop
236 { 381 {
237 ev_tstamp ev_rt_now; 382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
238 #define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
239 #include "ev_vars.h" 385 #include "ev_vars.h"
240 #undef VAR 386 #undef VAR
241 }; 387 };
242 #include "ev_wrap.h" 388 #include "ev_wrap.h"
243 389
244 struct ev_loop default_loop_struct; 390 static struct ev_loop default_loop_struct;
245 static struct ev_loop *default_loop; 391 struct ev_loop *ev_default_loop_ptr;
246 392
247#else 393#else
248 394
249 ev_tstamp ev_rt_now; 395 ev_tstamp ev_rt_now;
250 #define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
251 #include "ev_vars.h" 397 #include "ev_vars.h"
252 #undef VAR 398 #undef VAR
253 399
254 static int default_loop; 400 static int ev_default_loop_ptr;
255 401
256#endif 402#endif
257 403
258/*****************************************************************************/ 404/*****************************************************************************/
259 405
… …
269 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
270 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
271#endif 417#endif
272} 418}
273 419
274inline ev_tstamp 420ev_tstamp inline_size
275get_clock (void) 421get_clock (void)
276{ 422{
277#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
278 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
279 { 425 {
… …
292{ 438{
293 return ev_rt_now; 439 return ev_rt_now;
294} 440}
295#endif 441#endif
296 442
297#define array_roundsize(type,n) ((n) | 4 & ~3) 443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
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}
467
468/*****************************************************************************/
469
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}
298 497
299#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
300 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
301 { \ 500 { \
302 int newcnt = cur; \ 501 int ocur_ = (cur); \
303 do \ 502 (base) = (type *)array_realloc \
304 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
305 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
306 } \
307 while ((cnt) > newcnt); \
308 \
309 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
310 init (base + cur, newcnt - cur); \
311 cur = newcnt; \
312 } 505 }
313 506
507#if 0
314#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
315 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316 { \ 510 { \
317 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
318 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320 } 514 }
321 515#endif
322/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324#define array_free_microshit(stem) \
325 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326 516
327#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
329 519
330/*****************************************************************************/ 520/*****************************************************************************/
331 521
332static void 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
333anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
334{ 552{
335 while (count--) 553 while (count--)
336 { 554 {
337 base->head = 0; 555 base->head = 0;
… …
340 558
341 ++base; 559 ++base;
342 } 560 }
343} 561}
344 562
345void 563void inline_speed
346ev_feed_event (EV_P_ void *w, int revents)
347{
348 W w_ = (W)w;
349
350 if (w_->pending)
351 {
352 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353 return;
354 }
355
356 w_->pending = ++pendingcnt [ABSPRI (w_)];
357 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360}
361
362static void
363queue_events (EV_P_ W *events, int eventcnt, int type)
364{
365 int i;
366
367 for (i = 0; i < eventcnt; ++i)
368 ev_feed_event (EV_A_ events [i], type);
369}
370
371inline void
372fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
373{ 565{
374 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
375 struct ev_io *w; 567 ev_io *w;
376 568
377 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)
378 { 570 {
379 int ev = w->events & revents; 571 int ev = w->events & revents;
380 572
381 if (ev) 573 if (ev)
382 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
384} 576}
385 577
386void 578void
387ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
388{ 580{
581 if (fd >= 0 && fd < anfdmax)
389 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
390} 583}
391 584
392/*****************************************************************************/ 585void inline_size
393
394static void
395fd_reify (EV_P) 586fd_reify (EV_P)
396{ 587{
397 int i; 588 int i;
398 589
399 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
400 { 591 {
401 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
402 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
403 struct ev_io *w; 594 ev_io *w;
404 595
405 int events = 0; 596 unsigned char events = 0;
406 597
407 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)
408 events |= w->events; 599 events |= (unsigned char)w->events;
409 600
601#if EV_SELECT_IS_WINSOCKET
602 if (events)
603 {
604 unsigned long argp;
605 anfd->handle = _get_osfhandle (fd);
606 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
607 }
608#endif
609
610 {
611 unsigned char o_events = anfd->events;
612 unsigned char o_reify = anfd->reify;
613
410 anfd->reify = 0; 614 anfd->reify = 0;
411
412 method_modify (EV_A_ fd, anfd->events, events);
413 anfd->events = events; 615 anfd->events = events;
616
617 if (o_events != events || o_reify & EV_IOFDSET)
618 backend_modify (EV_A_ fd, o_events, events);
619 }
414 } 620 }
415 621
416 fdchangecnt = 0; 622 fdchangecnt = 0;
417} 623}
418 624
419static void 625void inline_size
420fd_change (EV_P_ int fd) 626fd_change (EV_P_ int fd, int flags)
421{ 627{
422 if (anfds [fd].reify) 628 unsigned char reify = anfds [fd].reify;
423 return;
424
425 anfds [fd].reify = 1; 629 anfds [fd].reify |= flags;
426 630
631 if (expect_true (!reify))
632 {
427 ++fdchangecnt; 633 ++fdchangecnt;
428 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 634 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429 fdchanges [fdchangecnt - 1] = fd; 635 fdchanges [fdchangecnt - 1] = fd;
636 }
430} 637}
431 638
432static void 639void inline_speed
433fd_kill (EV_P_ int fd) 640fd_kill (EV_P_ int fd)
434{ 641{
435 struct ev_io *w; 642 ev_io *w;
436 643
437 while ((w = (struct ev_io *)anfds [fd].head)) 644 while ((w = (ev_io *)anfds [fd].head))
438 { 645 {
439 ev_io_stop (EV_A_ w); 646 ev_io_stop (EV_A_ w);
440 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 647 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
441 } 648 }
442} 649}
443 650
444static int 651int inline_size
445fd_valid (int fd) 652fd_valid (int fd)
446{ 653{
447#ifdef WIN32 654#ifdef _WIN32
448 return !!win32_get_osfhandle (fd); 655 return _get_osfhandle (fd) != -1;
449#else 656#else
450 return fcntl (fd, F_GETFD) != -1; 657 return fcntl (fd, F_GETFD) != -1;
451#endif 658#endif
452} 659}
453 660
454/* called on EBADF to verify fds */ 661/* called on EBADF to verify fds */
455static void 662static void noinline
456fd_ebadf (EV_P) 663fd_ebadf (EV_P)
457{ 664{
458 int fd; 665 int fd;
459 666
460 for (fd = 0; fd < anfdmax; ++fd) 667 for (fd = 0; fd < anfdmax; ++fd)
… …
462 if (!fd_valid (fd) == -1 && errno == EBADF) 669 if (!fd_valid (fd) == -1 && errno == EBADF)
463 fd_kill (EV_A_ fd); 670 fd_kill (EV_A_ fd);
464} 671}
465 672
466/* called on ENOMEM in select/poll to kill some fds and retry */ 673/* called on ENOMEM in select/poll to kill some fds and retry */
467static void 674static void noinline
468fd_enomem (EV_P) 675fd_enomem (EV_P)
469{ 676{
470 int fd; 677 int fd;
471 678
472 for (fd = anfdmax; fd--; ) 679 for (fd = anfdmax; fd--; )
… …
475 fd_kill (EV_A_ fd); 682 fd_kill (EV_A_ fd);
476 return; 683 return;
477 } 684 }
478} 685}
479 686
480/* usually called after fork if method needs to re-arm all fds from scratch */ 687/* usually called after fork if backend needs to re-arm all fds from scratch */
481static void 688static void noinline
482fd_rearm_all (EV_P) 689fd_rearm_all (EV_P)
483{ 690{
484 int fd; 691 int fd;
485 692
486 /* this should be highly optimised to not do anything but set a flag */
487 for (fd = 0; fd < anfdmax; ++fd) 693 for (fd = 0; fd < anfdmax; ++fd)
488 if (anfds [fd].events) 694 if (anfds [fd].events)
489 { 695 {
490 anfds [fd].events = 0; 696 anfds [fd].events = 0;
491 fd_change (EV_A_ fd); 697 fd_change (EV_A_ fd, EV_IOFDSET | 1);
492 } 698 }
493} 699}
494 700
495/*****************************************************************************/ 701/*****************************************************************************/
496 702
497static void 703void inline_speed
498upheap (WT *heap, int k) 704upheap (WT *heap, int k)
499{ 705{
500 WT w = heap [k]; 706 WT w = heap [k];
501 707
502 while (k && heap [k >> 1]->at > w->at) 708 while (k)
503 { 709 {
710 int p = (k - 1) >> 1;
711
712 if (heap [p]->at <= w->at)
713 break;
714
504 heap [k] = heap [k >> 1]; 715 heap [k] = heap [p];
505 ((W)heap [k])->active = k + 1; 716 ((W)heap [k])->active = k + 1;
506 k >>= 1; 717 k = p;
507 } 718 }
508 719
509 heap [k] = w; 720 heap [k] = w;
510 ((W)heap [k])->active = k + 1; 721 ((W)heap [k])->active = k + 1;
511
512} 722}
513 723
514static void 724void inline_speed
515downheap (WT *heap, int N, int k) 725downheap (WT *heap, int N, int k)
516{ 726{
517 WT w = heap [k]; 727 WT w = heap [k];
518 728
519 while (k < (N >> 1)) 729 for (;;)
520 { 730 {
521 int j = k << 1; 731 int c = (k << 1) + 1;
522 732
523 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 733 if (c >= N)
524 ++j;
525
526 if (w->at <= heap [j]->at)
527 break; 734 break;
528 735
736 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
737 ? 1 : 0;
738
739 if (w->at <= heap [c]->at)
740 break;
741
529 heap [k] = heap [j]; 742 heap [k] = heap [c];
530 ((W)heap [k])->active = k + 1; 743 ((W)heap [k])->active = k + 1;
744
531 k = j; 745 k = c;
532 } 746 }
533 747
534 heap [k] = w; 748 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 749 ((W)heap [k])->active = k + 1;
536} 750}
537 751
538inline void 752void inline_size
539adjustheap (WT *heap, int N, int k, ev_tstamp at) 753adjustheap (WT *heap, int N, int k)
540{ 754{
541 ev_tstamp old_at = heap [k]->at; 755 upheap (heap, k);
542 heap [k]->at = at;
543
544 if (old_at < at)
545 downheap (heap, N, k); 756 downheap (heap, N, k);
546 else
547 upheap (heap, k);
548} 757}
549 758
550/*****************************************************************************/ 759/*****************************************************************************/
551 760
552typedef struct 761typedef struct
… …
558static ANSIG *signals; 767static ANSIG *signals;
559static int signalmax; 768static int signalmax;
560 769
561static int sigpipe [2]; 770static int sigpipe [2];
562static sig_atomic_t volatile gotsig; 771static sig_atomic_t volatile gotsig;
563static struct ev_io sigev; 772static ev_io sigev;
564 773
565static void 774void inline_size
566signals_init (ANSIG *base, int count) 775signals_init (ANSIG *base, int count)
567{ 776{
568 while (count--) 777 while (count--)
569 { 778 {
570 base->head = 0; 779 base->head = 0;
… …
575} 784}
576 785
577static void 786static void
578sighandler (int signum) 787sighandler (int signum)
579{ 788{
580#if WIN32 789#if _WIN32
581 signal (signum, sighandler); 790 signal (signum, sighandler);
582#endif 791#endif
583 792
584 signals [signum - 1].gotsig = 1; 793 signals [signum - 1].gotsig = 1;
585 794
586 if (!gotsig) 795 if (!gotsig)
587 { 796 {
588 int old_errno = errno; 797 int old_errno = errno;
589 gotsig = 1; 798 gotsig = 1;
590#ifdef WIN32
591 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592#else
593 write (sigpipe [1], &signum, 1); 799 write (sigpipe [1], &signum, 1);
594#endif
595 errno = old_errno; 800 errno = old_errno;
596 } 801 }
597} 802}
598 803
599void 804void noinline
600ev_feed_signal_event (EV_P_ int signum) 805ev_feed_signal_event (EV_P_ int signum)
601{ 806{
602 WL w; 807 WL w;
603 808
604#if EV_MULTIPLICITY 809#if EV_MULTIPLICITY
605 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 810 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
606#endif 811#endif
607 812
608 --signum; 813 --signum;
609 814
610 if (signum < 0 || signum >= signalmax) 815 if (signum < 0 || signum >= signalmax)
… …
615 for (w = signals [signum].head; w; w = w->next) 820 for (w = signals [signum].head; w; w = w->next)
616 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 821 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617} 822}
618 823
619static void 824static void
620sigcb (EV_P_ struct ev_io *iow, int revents) 825sigcb (EV_P_ ev_io *iow, int revents)
621{ 826{
622 int signum; 827 int signum;
623 828
624#ifdef WIN32
625 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626#else
627 read (sigpipe [0], &revents, 1); 829 read (sigpipe [0], &revents, 1);
628#endif
629 gotsig = 0; 830 gotsig = 0;
630 831
631 for (signum = signalmax; signum--; ) 832 for (signum = signalmax; signum--; )
632 if (signals [signum].gotsig) 833 if (signals [signum].gotsig)
633 ev_feed_signal_event (EV_A_ signum + 1); 834 ev_feed_signal_event (EV_A_ signum + 1);
634} 835}
635 836
636static void 837void inline_speed
838fd_intern (int fd)
839{
840#ifdef _WIN32
841 int arg = 1;
842 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
843#else
844 fcntl (fd, F_SETFD, FD_CLOEXEC);
845 fcntl (fd, F_SETFL, O_NONBLOCK);
846#endif
847}
848
849static void noinline
637siginit (EV_P) 850siginit (EV_P)
638{ 851{
639#ifndef WIN32 852 fd_intern (sigpipe [0]);
640 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 853 fd_intern (sigpipe [1]);
641 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643 /* rather than sort out wether we really need nb, set it */
644 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646#endif
647 854
648 ev_io_set (&sigev, sigpipe [0], EV_READ); 855 ev_io_set (&sigev, sigpipe [0], EV_READ);
649 ev_io_start (EV_A_ &sigev); 856 ev_io_start (EV_A_ &sigev);
650 ev_unref (EV_A); /* child watcher should not keep loop alive */ 857 ev_unref (EV_A); /* child watcher should not keep loop alive */
651} 858}
652 859
653/*****************************************************************************/ 860/*****************************************************************************/
654 861
655static struct ev_child *childs [PID_HASHSIZE]; 862static WL childs [EV_PID_HASHSIZE];
656 863
657#ifndef WIN32 864#ifndef _WIN32
658 865
659static struct ev_signal childev; 866static ev_signal childev;
867
868void inline_speed
869child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
870{
871 ev_child *w;
872
873 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
874 if (w->pid == pid || !w->pid)
875 {
876 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
877 w->rpid = pid;
878 w->rstatus = status;
879 ev_feed_event (EV_A_ (W)w, EV_CHILD);
880 }
881}
660 882
661#ifndef WCONTINUED 883#ifndef WCONTINUED
662# define WCONTINUED 0 884# define WCONTINUED 0
663#endif 885#endif
664 886
665static void 887static void
666child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
667{
668 struct ev_child *w;
669
670 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
671 if (w->pid == pid || !w->pid)
672 {
673 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674 w->rpid = pid;
675 w->rstatus = status;
676 ev_feed_event (EV_A_ (W)w, EV_CHILD);
677 }
678}
679
680static void
681childcb (EV_P_ struct ev_signal *sw, int revents) 888childcb (EV_P_ ev_signal *sw, int revents)
682{ 889{
683 int pid, status; 890 int pid, status;
684 891
892 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 893 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686 { 894 if (!WCONTINUED
895 || errno != EINVAL
896 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
897 return;
898
687 /* make sure we are called again until all childs have been reaped */ 899 /* make sure we are called again until all childs have been reaped */
900 /* we need to do it this way so that the callback gets called before we continue */
688 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 901 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689 902
690 child_reap (EV_A_ sw, pid, pid, status); 903 child_reap (EV_A_ sw, pid, pid, status);
904 if (EV_PID_HASHSIZE > 1)
691 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 905 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
692 }
693} 906}
694 907
695#endif 908#endif
696 909
697/*****************************************************************************/ 910/*****************************************************************************/
698 911
912#if EV_USE_PORT
913# include "ev_port.c"
914#endif
699#if EV_USE_KQUEUE 915#if EV_USE_KQUEUE
700# include "ev_kqueue.c" 916# include "ev_kqueue.c"
701#endif 917#endif
702#if EV_USE_EPOLL 918#if EV_USE_EPOLL
703# include "ev_epoll.c" 919# include "ev_epoll.c"
… …
720{ 936{
721 return EV_VERSION_MINOR; 937 return EV_VERSION_MINOR;
722} 938}
723 939
724/* return true if we are running with elevated privileges and should ignore env variables */ 940/* return true if we are running with elevated privileges and should ignore env variables */
725static int 941int inline_size
726enable_secure (void) 942enable_secure (void)
727{ 943{
728#ifdef WIN32 944#ifdef _WIN32
729 return 0; 945 return 0;
730#else 946#else
731 return getuid () != geteuid () 947 return getuid () != geteuid ()
732 || getgid () != getegid (); 948 || getgid () != getegid ();
733#endif 949#endif
734} 950}
735 951
736int 952unsigned int
737ev_method (EV_P) 953ev_supported_backends (void)
738{ 954{
739 return method; 955 unsigned int flags = 0;
740}
741 956
742static void 957 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743loop_init (EV_P_ int methods) 958 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
959 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
960 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
961 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
962
963 return flags;
964}
965
966unsigned int
967ev_recommended_backends (void)
744{ 968{
745 if (!method) 969 unsigned int flags = ev_supported_backends ();
970
971#ifndef __NetBSD__
972 /* kqueue is borked on everything but netbsd apparently */
973 /* it usually doesn't work correctly on anything but sockets and pipes */
974 flags &= ~EVBACKEND_KQUEUE;
975#endif
976#ifdef __APPLE__
977 // flags &= ~EVBACKEND_KQUEUE; for documentation
978 flags &= ~EVBACKEND_POLL;
979#endif
980
981 return flags;
982}
983
984unsigned int
985ev_embeddable_backends (void)
986{
987 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
988
989 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
990 /* please fix it and tell me how to detect the fix */
991 flags &= ~EVBACKEND_EPOLL;
992
993 return flags;
994}
995
996unsigned int
997ev_backend (EV_P)
998{
999 return backend;
1000}
1001
1002unsigned int
1003ev_loop_count (EV_P)
1004{
1005 return loop_count;
1006}
1007
1008void
1009ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1010{
1011 io_blocktime = interval;
1012}
1013
1014void
1015ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1016{
1017 timeout_blocktime = interval;
1018}
1019
1020static void noinline
1021loop_init (EV_P_ unsigned int flags)
1022{
1023 if (!backend)
746 { 1024 {
747#if EV_USE_MONOTONIC 1025#if EV_USE_MONOTONIC
748 { 1026 {
749 struct timespec ts; 1027 struct timespec ts;
750 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1028 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
755 ev_rt_now = ev_time (); 1033 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 1034 mn_now = get_clock ();
757 now_floor = mn_now; 1035 now_floor = mn_now;
758 rtmn_diff = ev_rt_now - mn_now; 1036 rtmn_diff = ev_rt_now - mn_now;
759 1037
760 if (methods == EVMETHOD_AUTO) 1038 io_blocktime = 0.;
761 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1039 timeout_blocktime = 0.;
1040
1041 /* pid check not overridable via env */
1042#ifndef _WIN32
1043 if (flags & EVFLAG_FORKCHECK)
1044 curpid = getpid ();
1045#endif
1046
1047 if (!(flags & EVFLAG_NOENV)
1048 && !enable_secure ()
1049 && getenv ("LIBEV_FLAGS"))
762 methods = atoi (getenv ("LIBEV_METHODS")); 1050 flags = atoi (getenv ("LIBEV_FLAGS"));
763 else
764 methods = EVMETHOD_ANY;
765 1051
766 method = 0; 1052 if (!(flags & 0x0000ffffUL))
1053 flags |= ev_recommended_backends ();
1054
1055 backend = 0;
1056 backend_fd = -1;
767#if EV_USE_WIN32 1057#if EV_USE_INOTIFY
768 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1058 fs_fd = -2;
1059#endif
1060
1061#if EV_USE_PORT
1062 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
769#endif 1063#endif
770#if EV_USE_KQUEUE 1064#if EV_USE_KQUEUE
771 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1065 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772#endif 1066#endif
773#if EV_USE_EPOLL 1067#if EV_USE_EPOLL
774 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1068 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775#endif 1069#endif
776#if EV_USE_POLL 1070#if EV_USE_POLL
777 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1071 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778#endif 1072#endif
779#if EV_USE_SELECT 1073#if EV_USE_SELECT
780 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1074 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781#endif 1075#endif
782 1076
783 ev_init (&sigev, sigcb); 1077 ev_init (&sigev, sigcb);
784 ev_set_priority (&sigev, EV_MAXPRI); 1078 ev_set_priority (&sigev, EV_MAXPRI);
785 } 1079 }
786} 1080}
787 1081
788void 1082static void noinline
789loop_destroy (EV_P) 1083loop_destroy (EV_P)
790{ 1084{
791 int i; 1085 int i;
792 1086
793#if EV_USE_WIN32 1087#if EV_USE_INOTIFY
794 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1088 if (fs_fd >= 0)
1089 close (fs_fd);
1090#endif
1091
1092 if (backend_fd >= 0)
1093 close (backend_fd);
1094
1095#if EV_USE_PORT
1096 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795#endif 1097#endif
796#if EV_USE_KQUEUE 1098#if EV_USE_KQUEUE
797 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1099 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798#endif 1100#endif
799#if EV_USE_EPOLL 1101#if EV_USE_EPOLL
800 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1102 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801#endif 1103#endif
802#if EV_USE_POLL 1104#if EV_USE_POLL
803 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1105 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804#endif 1106#endif
805#if EV_USE_SELECT 1107#if EV_USE_SELECT
806 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1108 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807#endif 1109#endif
808 1110
809 for (i = NUMPRI; i--; ) 1111 for (i = NUMPRI; i--; )
1112 {
810 array_free (pending, [i]); 1113 array_free (pending, [i]);
1114#if EV_IDLE_ENABLE
1115 array_free (idle, [i]);
1116#endif
1117 }
1118
1119 ev_free (anfds); anfdmax = 0;
811 1120
812 /* have to use the microsoft-never-gets-it-right macro */ 1121 /* have to use the microsoft-never-gets-it-right macro */
813 array_free_microshit (fdchange); 1122 array_free (fdchange, EMPTY);
814 array_free_microshit (timer); 1123 array_free (timer, EMPTY);
815#if EV_PERIODICS 1124#if EV_PERIODIC_ENABLE
816 array_free_microshit (periodic); 1125 array_free (periodic, EMPTY);
817#endif 1126#endif
818 array_free_microshit (idle); 1127#if EV_FORK_ENABLE
819 array_free_microshit (prepare); 1128 array_free (fork, EMPTY);
820 array_free_microshit (check); 1129#endif
1130 array_free (prepare, EMPTY);
1131 array_free (check, EMPTY);
821 1132
822 method = 0; 1133 backend = 0;
823} 1134}
824 1135
825static void 1136void inline_size infy_fork (EV_P);
1137
1138void inline_size
826loop_fork (EV_P) 1139loop_fork (EV_P)
827{ 1140{
1141#if EV_USE_PORT
1142 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1143#endif
1144#if EV_USE_KQUEUE
1145 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1146#endif
828#if EV_USE_EPOLL 1147#if EV_USE_EPOLL
829 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1148 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830#endif 1149#endif
831#if EV_USE_KQUEUE 1150#if EV_USE_INOTIFY
832 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1151 infy_fork (EV_A);
833#endif 1152#endif
834 1153
835 if (ev_is_active (&sigev)) 1154 if (ev_is_active (&sigev))
836 { 1155 {
837 /* default loop */ 1156 /* default loop */
… …
850 postfork = 0; 1169 postfork = 0;
851} 1170}
852 1171
853#if EV_MULTIPLICITY 1172#if EV_MULTIPLICITY
854struct ev_loop * 1173struct ev_loop *
855ev_loop_new (int methods) 1174ev_loop_new (unsigned int flags)
856{ 1175{
857 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1176 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
858 1177
859 memset (loop, 0, sizeof (struct ev_loop)); 1178 memset (loop, 0, sizeof (struct ev_loop));
860 1179
861 loop_init (EV_A_ methods); 1180 loop_init (EV_A_ flags);
862 1181
863 if (ev_method (EV_A)) 1182 if (ev_backend (EV_A))
864 return loop; 1183 return loop;
865 1184
866 return 0; 1185 return 0;
867} 1186}
868 1187
… …
881 1200
882#endif 1201#endif
883 1202
884#if EV_MULTIPLICITY 1203#if EV_MULTIPLICITY
885struct ev_loop * 1204struct ev_loop *
1205ev_default_loop_init (unsigned int flags)
886#else 1206#else
887int 1207int
1208ev_default_loop (unsigned int flags)
888#endif 1209#endif
889ev_default_loop (int methods)
890{ 1210{
891 if (sigpipe [0] == sigpipe [1]) 1211 if (sigpipe [0] == sigpipe [1])
892 if (pipe (sigpipe)) 1212 if (pipe (sigpipe))
893 return 0; 1213 return 0;
894 1214
895 if (!default_loop) 1215 if (!ev_default_loop_ptr)
896 { 1216 {
897#if EV_MULTIPLICITY 1217#if EV_MULTIPLICITY
898 struct ev_loop *loop = default_loop = &default_loop_struct; 1218 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899#else 1219#else
900 default_loop = 1; 1220 ev_default_loop_ptr = 1;
901#endif 1221#endif
902 1222
903 loop_init (EV_A_ methods); 1223 loop_init (EV_A_ flags);
904 1224
905 if (ev_method (EV_A)) 1225 if (ev_backend (EV_A))
906 { 1226 {
907 siginit (EV_A); 1227 siginit (EV_A);
908 1228
909#ifndef WIN32 1229#ifndef _WIN32
910 ev_signal_init (&childev, childcb, SIGCHLD); 1230 ev_signal_init (&childev, childcb, SIGCHLD);
911 ev_set_priority (&childev, EV_MAXPRI); 1231 ev_set_priority (&childev, EV_MAXPRI);
912 ev_signal_start (EV_A_ &childev); 1232 ev_signal_start (EV_A_ &childev);
913 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1233 ev_unref (EV_A); /* child watcher should not keep loop alive */
914#endif 1234#endif
915 } 1235 }
916 else 1236 else
917 default_loop = 0; 1237 ev_default_loop_ptr = 0;
918 } 1238 }
919 1239
920 return default_loop; 1240 return ev_default_loop_ptr;
921} 1241}
922 1242
923void 1243void
924ev_default_destroy (void) 1244ev_default_destroy (void)
925{ 1245{
926#if EV_MULTIPLICITY 1246#if EV_MULTIPLICITY
927 struct ev_loop *loop = default_loop; 1247 struct ev_loop *loop = ev_default_loop_ptr;
928#endif 1248#endif
929 1249
930#ifndef WIN32 1250#ifndef _WIN32
931 ev_ref (EV_A); /* child watcher */ 1251 ev_ref (EV_A); /* child watcher */
932 ev_signal_stop (EV_A_ &childev); 1252 ev_signal_stop (EV_A_ &childev);
933#endif 1253#endif
934 1254
935 ev_ref (EV_A); /* signal watcher */ 1255 ev_ref (EV_A); /* signal watcher */
… …
943 1263
944void 1264void
945ev_default_fork (void) 1265ev_default_fork (void)
946{ 1266{
947#if EV_MULTIPLICITY 1267#if EV_MULTIPLICITY
948 struct ev_loop *loop = default_loop; 1268 struct ev_loop *loop = ev_default_loop_ptr;
949#endif 1269#endif
950 1270
951 if (method) 1271 if (backend)
952 postfork = 1; 1272 postfork = 1;
953} 1273}
954 1274
955/*****************************************************************************/ 1275/*****************************************************************************/
956 1276
957static int 1277void
958any_pending (EV_P) 1278ev_invoke (EV_P_ void *w, int revents)
959{ 1279{
960 int pri; 1280 EV_CB_INVOKE ((W)w, revents);
961
962 for (pri = NUMPRI; pri--; )
963 if (pendingcnt [pri])
964 return 1;
965
966 return 0;
967} 1281}
968 1282
969static void 1283void inline_speed
970call_pending (EV_P) 1284call_pending (EV_P)
971{ 1285{
972 int pri; 1286 int pri;
973 1287
974 for (pri = NUMPRI; pri--; ) 1288 for (pri = NUMPRI; pri--; )
975 while (pendingcnt [pri]) 1289 while (pendingcnt [pri])
976 { 1290 {
977 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1291 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978 1292
979 if (p->w) 1293 if (expect_true (p->w))
980 { 1294 {
1295 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1296
981 p->w->pending = 0; 1297 p->w->pending = 0;
982 EV_CB_INVOKE (p->w, p->events); 1298 EV_CB_INVOKE (p->w, p->events);
983 } 1299 }
984 } 1300 }
985} 1301}
986 1302
987static void 1303void inline_size
988timers_reify (EV_P) 1304timers_reify (EV_P)
989{ 1305{
990 while (timercnt && ((WT)timers [0])->at <= mn_now) 1306 while (timercnt && ((WT)timers [0])->at <= mn_now)
991 { 1307 {
992 struct ev_timer *w = timers [0]; 1308 ev_timer *w = (ev_timer *)timers [0];
993 1309
994 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1310 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995 1311
996 /* first reschedule or stop timer */ 1312 /* first reschedule or stop timer */
997 if (w->repeat) 1313 if (w->repeat)
998 { 1314 {
999 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1315 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1000 1316
1001 ((WT)w)->at += w->repeat; 1317 ((WT)w)->at += w->repeat;
1002 if (((WT)w)->at < mn_now) 1318 if (((WT)w)->at < mn_now)
1003 ((WT)w)->at = mn_now; 1319 ((WT)w)->at = mn_now;
1004 1320
1005 downheap ((WT *)timers, timercnt, 0); 1321 downheap (timers, timercnt, 0);
1006 } 1322 }
1007 else 1323 else
1008 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1324 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1009 1325
1010 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1326 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011 } 1327 }
1012} 1328}
1013 1329
1014#if EV_PERIODICS 1330#if EV_PERIODIC_ENABLE
1015static void 1331void inline_size
1016periodics_reify (EV_P) 1332periodics_reify (EV_P)
1017{ 1333{
1018 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1334 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019 { 1335 {
1020 struct ev_periodic *w = periodics [0]; 1336 ev_periodic *w = (ev_periodic *)periodics [0];
1021 1337
1022 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1338 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023 1339
1024 /* first reschedule or stop timer */ 1340 /* first reschedule or stop timer */
1025 if (w->reschedule_cb) 1341 if (w->reschedule_cb)
1026 { 1342 {
1027 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1343 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1028
1029 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1344 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030 downheap ((WT *)periodics, periodiccnt, 0); 1345 downheap (periodics, periodiccnt, 0);
1031 } 1346 }
1032 else if (w->interval) 1347 else if (w->interval)
1033 { 1348 {
1034 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1349 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1350 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1035 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1351 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1036 downheap ((WT *)periodics, periodiccnt, 0); 1352 downheap (periodics, periodiccnt, 0);
1037 } 1353 }
1038 else 1354 else
1039 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1355 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040 1356
1041 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1357 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042 } 1358 }
1043} 1359}
1044 1360
1045static void 1361static void noinline
1046periodics_reschedule (EV_P) 1362periodics_reschedule (EV_P)
1047{ 1363{
1048 int i; 1364 int i;
1049 1365
1050 /* adjust periodics after time jump */ 1366 /* adjust periodics after time jump */
1051 for (i = 0; i < periodiccnt; ++i) 1367 for (i = 0; i < periodiccnt; ++i)
1052 { 1368 {
1053 struct ev_periodic *w = periodics [i]; 1369 ev_periodic *w = (ev_periodic *)periodics [i];
1054 1370
1055 if (w->reschedule_cb) 1371 if (w->reschedule_cb)
1056 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1372 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057 else if (w->interval) 1373 else if (w->interval)
1058 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1374 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1059 } 1375 }
1060 1376
1061 /* now rebuild the heap */ 1377 /* now rebuild the heap */
1062 for (i = periodiccnt >> 1; i--; ) 1378 for (i = periodiccnt >> 1; i--; )
1063 downheap ((WT *)periodics, periodiccnt, i); 1379 downheap (periodics, periodiccnt, i);
1064} 1380}
1065#endif 1381#endif
1066 1382
1067inline int 1383#if EV_IDLE_ENABLE
1068time_update_monotonic (EV_P) 1384void inline_size
1385idle_reify (EV_P)
1069{ 1386{
1387 if (expect_false (idleall))
1388 {
1389 int pri;
1390
1391 for (pri = NUMPRI; pri--; )
1392 {
1393 if (pendingcnt [pri])
1394 break;
1395
1396 if (idlecnt [pri])
1397 {
1398 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1399 break;
1400 }
1401 }
1402 }
1403}
1404#endif
1405
1406void inline_speed
1407time_update (EV_P_ ev_tstamp max_block)
1408{
1409 int i;
1410
1411#if EV_USE_MONOTONIC
1412 if (expect_true (have_monotonic))
1413 {
1414 ev_tstamp odiff = rtmn_diff;
1415
1070 mn_now = get_clock (); 1416 mn_now = get_clock ();
1071 1417
1418 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1419 /* interpolate in the meantime */
1072 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1420 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1073 { 1421 {
1074 ev_rt_now = rtmn_diff + mn_now; 1422 ev_rt_now = rtmn_diff + mn_now;
1075 return 0; 1423 return;
1076 } 1424 }
1077 else 1425
1078 {
1079 now_floor = mn_now; 1426 now_floor = mn_now;
1080 ev_rt_now = ev_time (); 1427 ev_rt_now = ev_time ();
1081 return 1;
1082 }
1083}
1084 1428
1085static void 1429 /* loop a few times, before making important decisions.
1086time_update (EV_P) 1430 * on the choice of "4": one iteration isn't enough,
1087{ 1431 * in case we get preempted during the calls to
1088 int i; 1432 * ev_time and get_clock. a second call is almost guaranteed
1089 1433 * to succeed in that case, though. and looping a few more times
1090#if EV_USE_MONOTONIC 1434 * doesn't hurt either as we only do this on time-jumps or
1091 if (expect_true (have_monotonic)) 1435 * in the unlikely event of having been preempted here.
1092 { 1436 */
1093 if (time_update_monotonic (EV_A)) 1437 for (i = 4; --i; )
1094 { 1438 {
1095 ev_tstamp odiff = rtmn_diff;
1096
1097 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1098 {
1099 rtmn_diff = ev_rt_now - mn_now; 1439 rtmn_diff = ev_rt_now - mn_now;
1100 1440
1101 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1441 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102 return; /* all is well */ 1442 return; /* all is well */
1103 1443
1104 ev_rt_now = ev_time (); 1444 ev_rt_now = ev_time ();
1105 mn_now = get_clock (); 1445 mn_now = get_clock ();
1106 now_floor = mn_now; 1446 now_floor = mn_now;
1107 } 1447 }
1108 1448
1109# if EV_PERIODICS 1449# if EV_PERIODIC_ENABLE
1450 periodics_reschedule (EV_A);
1451# endif
1452 /* no timer adjustment, as the monotonic clock doesn't jump */
1453 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1454 }
1455 else
1456#endif
1457 {
1458 ev_rt_now = ev_time ();
1459
1460 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1461 {
1462#if EV_PERIODIC_ENABLE
1110 periodics_reschedule (EV_A); 1463 periodics_reschedule (EV_A);
1111# endif 1464#endif
1112 /* no timer adjustment, as the monotonic clock doesn't jump */
1113 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114 }
1115 }
1116 else
1117#endif
1118 {
1119 ev_rt_now = ev_time ();
1120
1121 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122 {
1123#if EV_PERIODICS
1124 periodics_reschedule (EV_A);
1125#endif
1126
1127 /* adjust timers. this is easy, as the offset is the same for all */ 1465 /* adjust timers. this is easy, as the offset is the same for all of them */
1128 for (i = 0; i < timercnt; ++i) 1466 for (i = 0; i < timercnt; ++i)
1129 ((WT)timers [i])->at += ev_rt_now - mn_now; 1467 ((WT)timers [i])->at += ev_rt_now - mn_now;
1130 } 1468 }
1131 1469
1132 mn_now = ev_rt_now; 1470 mn_now = ev_rt_now;
… …
1148static int loop_done; 1486static int loop_done;
1149 1487
1150void 1488void
1151ev_loop (EV_P_ int flags) 1489ev_loop (EV_P_ int flags)
1152{ 1490{
1153 double block;
1154 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1491 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1492 ? EVUNLOOP_ONE
1493 : EVUNLOOP_CANCEL;
1494
1495 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1155 1496
1156 do 1497 do
1157 { 1498 {
1499#ifndef _WIN32
1500 if (expect_false (curpid)) /* penalise the forking check even more */
1501 if (expect_false (getpid () != curpid))
1502 {
1503 curpid = getpid ();
1504 postfork = 1;
1505 }
1506#endif
1507
1508#if EV_FORK_ENABLE
1509 /* we might have forked, so queue fork handlers */
1510 if (expect_false (postfork))
1511 if (forkcnt)
1512 {
1513 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1514 call_pending (EV_A);
1515 }
1516#endif
1517
1158 /* queue check watchers (and execute them) */ 1518 /* queue prepare watchers (and execute them) */
1159 if (expect_false (preparecnt)) 1519 if (expect_false (preparecnt))
1160 { 1520 {
1161 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1521 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162 call_pending (EV_A); 1522 call_pending (EV_A);
1163 } 1523 }
1164 1524
1525 if (expect_false (!activecnt))
1526 break;
1527
1165 /* we might have forked, so reify kernel state if necessary */ 1528 /* we might have forked, so reify kernel state if necessary */
1166 if (expect_false (postfork)) 1529 if (expect_false (postfork))
1167 loop_fork (EV_A); 1530 loop_fork (EV_A);
1168 1531
1169 /* update fd-related kernel structures */ 1532 /* update fd-related kernel structures */
1170 fd_reify (EV_A); 1533 fd_reify (EV_A);
1171 1534
1172 /* calculate blocking time */ 1535 /* calculate blocking time */
1536 {
1537 ev_tstamp waittime = 0.;
1538 ev_tstamp sleeptime = 0.;
1173 1539
1174 /* we only need this for !monotonic clock or timers, but as we basically 1540 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1175 always have timers, we just calculate it always */
1176#if EV_USE_MONOTONIC
1177 if (expect_true (have_monotonic))
1178 time_update_monotonic (EV_A);
1179 else
1180#endif
1181 { 1541 {
1182 ev_rt_now = ev_time (); 1542 /* update time to cancel out callback processing overhead */
1183 mn_now = ev_rt_now; 1543 time_update (EV_A_ 1e100);
1184 }
1185 1544
1186 if (flags & EVLOOP_NONBLOCK || idlecnt)
1187 block = 0.;
1188 else
1189 {
1190 block = MAX_BLOCKTIME; 1545 waittime = MAX_BLOCKTIME;
1191 1546
1192 if (timercnt) 1547 if (timercnt)
1193 { 1548 {
1194 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1549 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195 if (block > to) block = to; 1550 if (waittime > to) waittime = to;
1196 } 1551 }
1197 1552
1198#if EV_PERIODICS 1553#if EV_PERIODIC_ENABLE
1199 if (periodiccnt) 1554 if (periodiccnt)
1200 { 1555 {
1201 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1556 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202 if (block > to) block = to; 1557 if (waittime > to) waittime = to;
1203 } 1558 }
1204#endif 1559#endif
1205 1560
1206 if (block < 0.) block = 0.; 1561 if (expect_false (waittime < timeout_blocktime))
1562 waittime = timeout_blocktime;
1563
1564 sleeptime = waittime - backend_fudge;
1565
1566 if (expect_true (sleeptime > io_blocktime))
1567 sleeptime = io_blocktime;
1568
1569 if (sleeptime)
1570 {
1571 ev_sleep (sleeptime);
1572 waittime -= sleeptime;
1573 }
1207 } 1574 }
1208 1575
1209 method_poll (EV_A_ block); 1576 ++loop_count;
1577 backend_poll (EV_A_ waittime);
1210 1578
1211 /* update ev_rt_now, do magic */ 1579 /* update ev_rt_now, do magic */
1212 time_update (EV_A); 1580 time_update (EV_A_ waittime + sleeptime);
1581 }
1213 1582
1214 /* queue pending timers and reschedule them */ 1583 /* queue pending timers and reschedule them */
1215 timers_reify (EV_A); /* relative timers called last */ 1584 timers_reify (EV_A); /* relative timers called last */
1216#if EV_PERIODICS 1585#if EV_PERIODIC_ENABLE
1217 periodics_reify (EV_A); /* absolute timers called first */ 1586 periodics_reify (EV_A); /* absolute timers called first */
1218#endif 1587#endif
1219 1588
1589#if EV_IDLE_ENABLE
1220 /* queue idle watchers unless io or timers are pending */ 1590 /* queue idle watchers unless other events are pending */
1221 if (idlecnt && !any_pending (EV_A)) 1591 idle_reify (EV_A);
1222 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1592#endif
1223 1593
1224 /* queue check watchers, to be executed first */ 1594 /* queue check watchers, to be executed first */
1225 if (checkcnt) 1595 if (expect_false (checkcnt))
1226 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1596 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227 1597
1228 call_pending (EV_A); 1598 call_pending (EV_A);
1599
1229 } 1600 }
1230 while (activecnt && !loop_done); 1601 while (expect_true (activecnt && !loop_done));
1231 1602
1232 if (loop_done != 2) 1603 if (loop_done == EVUNLOOP_ONE)
1233 loop_done = 0; 1604 loop_done = EVUNLOOP_CANCEL;
1234} 1605}
1235 1606
1236void 1607void
1237ev_unloop (EV_P_ int how) 1608ev_unloop (EV_P_ int how)
1238{ 1609{
1239 loop_done = how; 1610 loop_done = how;
1240} 1611}
1241 1612
1242/*****************************************************************************/ 1613/*****************************************************************************/
1243 1614
1244inline void 1615void inline_size
1245wlist_add (WL *head, WL elem) 1616wlist_add (WL *head, WL elem)
1246{ 1617{
1247 elem->next = *head; 1618 elem->next = *head;
1248 *head = elem; 1619 *head = elem;
1249} 1620}
1250 1621
1251inline void 1622void inline_size
1252wlist_del (WL *head, WL elem) 1623wlist_del (WL *head, WL elem)
1253{ 1624{
1254 while (*head) 1625 while (*head)
1255 { 1626 {
1256 if (*head == elem) 1627 if (*head == elem)
… …
1261 1632
1262 head = &(*head)->next; 1633 head = &(*head)->next;
1263 } 1634 }
1264} 1635}
1265 1636
1266inline void 1637void inline_speed
1267ev_clear_pending (EV_P_ W w) 1638clear_pending (EV_P_ W w)
1268{ 1639{
1269 if (w->pending) 1640 if (w->pending)
1270 { 1641 {
1271 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1642 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272 w->pending = 0; 1643 w->pending = 0;
1273 } 1644 }
1274} 1645}
1275 1646
1276inline void 1647int
1648ev_clear_pending (EV_P_ void *w)
1649{
1650 W w_ = (W)w;
1651 int pending = w_->pending;
1652
1653 if (expect_true (pending))
1654 {
1655 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1656 w_->pending = 0;
1657 p->w = 0;
1658 return p->events;
1659 }
1660 else
1661 return 0;
1662}
1663
1664void inline_size
1665pri_adjust (EV_P_ W w)
1666{
1667 int pri = w->priority;
1668 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1669 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1670 w->priority = pri;
1671}
1672
1673void inline_speed
1277ev_start (EV_P_ W w, int active) 1674ev_start (EV_P_ W w, int active)
1278{ 1675{
1279 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1676 pri_adjust (EV_A_ w);
1280 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282 w->active = active; 1677 w->active = active;
1283 ev_ref (EV_A); 1678 ev_ref (EV_A);
1284} 1679}
1285 1680
1286inline void 1681void inline_size
1287ev_stop (EV_P_ W w) 1682ev_stop (EV_P_ W w)
1288{ 1683{
1289 ev_unref (EV_A); 1684 ev_unref (EV_A);
1290 w->active = 0; 1685 w->active = 0;
1291} 1686}
1292 1687
1293/*****************************************************************************/ 1688/*****************************************************************************/
1294 1689
1295void 1690void noinline
1296ev_io_start (EV_P_ struct ev_io *w) 1691ev_io_start (EV_P_ ev_io *w)
1297{ 1692{
1298 int fd = w->fd; 1693 int fd = w->fd;
1299 1694
1300 if (ev_is_active (w)) 1695 if (expect_false (ev_is_active (w)))
1301 return; 1696 return;
1302 1697
1303 assert (("ev_io_start called with negative fd", fd >= 0)); 1698 assert (("ev_io_start called with negative fd", fd >= 0));
1304 1699
1305 ev_start (EV_A_ (W)w, 1); 1700 ev_start (EV_A_ (W)w, 1);
1306 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1701 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1307 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1702 wlist_add (&anfds[fd].head, (WL)w);
1308 1703
1309 fd_change (EV_A_ fd); 1704 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1705 w->events &= ~EV_IOFDSET;
1310} 1706}
1311 1707
1312void 1708void noinline
1313ev_io_stop (EV_P_ struct ev_io *w) 1709ev_io_stop (EV_P_ ev_io *w)
1314{ 1710{
1315 ev_clear_pending (EV_A_ (W)w); 1711 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1712 if (expect_false (!ev_is_active (w)))
1317 return; 1713 return;
1318 1714
1319 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1715 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320 1716
1321 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1717 wlist_del (&anfds[w->fd].head, (WL)w);
1322 ev_stop (EV_A_ (W)w); 1718 ev_stop (EV_A_ (W)w);
1323 1719
1324 fd_change (EV_A_ w->fd); 1720 fd_change (EV_A_ w->fd, 1);
1325} 1721}
1326 1722
1327void 1723void noinline
1328ev_timer_start (EV_P_ struct ev_timer *w) 1724ev_timer_start (EV_P_ ev_timer *w)
1725{
1726 if (expect_false (ev_is_active (w)))
1727 return;
1728
1729 ((WT)w)->at += mn_now;
1730
1731 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1732
1733 ev_start (EV_A_ (W)w, ++timercnt);
1734 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1735 timers [timercnt - 1] = (WT)w;
1736 upheap (timers, timercnt - 1);
1737
1738 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1739}
1740
1741void noinline
1742ev_timer_stop (EV_P_ ev_timer *w)
1743{
1744 clear_pending (EV_A_ (W)w);
1745 if (expect_false (!ev_is_active (w)))
1746 return;
1747
1748 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1749
1750 {
1751 int active = ((W)w)->active;
1752
1753 if (expect_true (--active < --timercnt))
1754 {
1755 timers [active] = timers [timercnt];
1756 adjustheap (timers, timercnt, active);
1757 }
1758 }
1759
1760 ((WT)w)->at -= mn_now;
1761
1762 ev_stop (EV_A_ (W)w);
1763}
1764
1765void noinline
1766ev_timer_again (EV_P_ ev_timer *w)
1329{ 1767{
1330 if (ev_is_active (w)) 1768 if (ev_is_active (w))
1331 return;
1332
1333 ((WT)w)->at += mn_now;
1334
1335 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336
1337 ev_start (EV_A_ (W)w, ++timercnt);
1338 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1339 timers [timercnt - 1] = w;
1340 upheap ((WT *)timers, timercnt - 1);
1341
1342 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343}
1344
1345void
1346ev_timer_stop (EV_P_ struct ev_timer *w)
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w))
1350 return;
1351
1352 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353
1354 if (((W)w)->active < timercnt--)
1355 {
1356 timers [((W)w)->active - 1] = timers [timercnt];
1357 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358 }
1359
1360 ((WT)w)->at -= mn_now;
1361
1362 ev_stop (EV_A_ (W)w);
1363}
1364
1365void
1366ev_timer_again (EV_P_ struct ev_timer *w)
1367{
1368 if (ev_is_active (w))
1369 { 1769 {
1370 if (w->repeat) 1770 if (w->repeat)
1771 {
1772 ((WT)w)->at = mn_now + w->repeat;
1371 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1773 adjustheap (timers, timercnt, ((W)w)->active - 1);
1774 }
1372 else 1775 else
1373 ev_timer_stop (EV_A_ w); 1776 ev_timer_stop (EV_A_ w);
1374 } 1777 }
1375 else if (w->repeat) 1778 else if (w->repeat)
1779 {
1780 w->at = w->repeat;
1376 ev_timer_start (EV_A_ w); 1781 ev_timer_start (EV_A_ w);
1782 }
1377} 1783}
1378 1784
1379#if EV_PERIODICS 1785#if EV_PERIODIC_ENABLE
1380void 1786void noinline
1381ev_periodic_start (EV_P_ struct ev_periodic *w) 1787ev_periodic_start (EV_P_ ev_periodic *w)
1382{ 1788{
1383 if (ev_is_active (w)) 1789 if (expect_false (ev_is_active (w)))
1384 return; 1790 return;
1385 1791
1386 if (w->reschedule_cb) 1792 if (w->reschedule_cb)
1387 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1793 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388 else if (w->interval) 1794 else if (w->interval)
1389 { 1795 {
1390 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1796 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1391 /* this formula differs from the one in periodic_reify because we do not always round up */ 1797 /* this formula differs from the one in periodic_reify because we do not always round up */
1392 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1798 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1393 } 1799 }
1800 else
1801 ((WT)w)->at = w->offset;
1394 1802
1395 ev_start (EV_A_ (W)w, ++periodiccnt); 1803 ev_start (EV_A_ (W)w, ++periodiccnt);
1396 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1804 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1397 periodics [periodiccnt - 1] = w; 1805 periodics [periodiccnt - 1] = (WT)w;
1398 upheap ((WT *)periodics, periodiccnt - 1); 1806 upheap (periodics, periodiccnt - 1);
1399 1807
1400 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1808 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1401} 1809}
1402 1810
1403void 1811void noinline
1404ev_periodic_stop (EV_P_ struct ev_periodic *w) 1812ev_periodic_stop (EV_P_ ev_periodic *w)
1405{ 1813{
1406 ev_clear_pending (EV_A_ (W)w); 1814 clear_pending (EV_A_ (W)w);
1407 if (!ev_is_active (w)) 1815 if (expect_false (!ev_is_active (w)))
1408 return; 1816 return;
1409 1817
1410 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1818 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1411 1819
1412 if (((W)w)->active < periodiccnt--) 1820 {
1821 int active = ((W)w)->active;
1822
1823 if (expect_true (--active < --periodiccnt))
1413 { 1824 {
1414 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1825 periodics [active] = periodics [periodiccnt];
1415 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1826 adjustheap (periodics, periodiccnt, active);
1416 } 1827 }
1828 }
1417 1829
1418 ev_stop (EV_A_ (W)w); 1830 ev_stop (EV_A_ (W)w);
1419} 1831}
1420 1832
1421void 1833void noinline
1422ev_periodic_again (EV_P_ struct ev_periodic *w) 1834ev_periodic_again (EV_P_ ev_periodic *w)
1423{ 1835{
1424 /* TODO: use adjustheap and recalculation */ 1836 /* TODO: use adjustheap and recalculation */
1425 ev_periodic_stop (EV_A_ w); 1837 ev_periodic_stop (EV_A_ w);
1426 ev_periodic_start (EV_A_ w); 1838 ev_periodic_start (EV_A_ w);
1427} 1839}
1428#endif 1840#endif
1429 1841
1430void
1431ev_idle_start (EV_P_ struct ev_idle *w)
1432{
1433 if (ev_is_active (w))
1434 return;
1435
1436 ev_start (EV_A_ (W)w, ++idlecnt);
1437 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438 idles [idlecnt - 1] = w;
1439}
1440
1441void
1442ev_idle_stop (EV_P_ struct ev_idle *w)
1443{
1444 ev_clear_pending (EV_A_ (W)w);
1445 if (ev_is_active (w))
1446 return;
1447
1448 idles [((W)w)->active - 1] = idles [--idlecnt];
1449 ev_stop (EV_A_ (W)w);
1450}
1451
1452void
1453ev_prepare_start (EV_P_ struct ev_prepare *w)
1454{
1455 if (ev_is_active (w))
1456 return;
1457
1458 ev_start (EV_A_ (W)w, ++preparecnt);
1459 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460 prepares [preparecnt - 1] = w;
1461}
1462
1463void
1464ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465{
1466 ev_clear_pending (EV_A_ (W)w);
1467 if (ev_is_active (w))
1468 return;
1469
1470 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471 ev_stop (EV_A_ (W)w);
1472}
1473
1474void
1475ev_check_start (EV_P_ struct ev_check *w)
1476{
1477 if (ev_is_active (w))
1478 return;
1479
1480 ev_start (EV_A_ (W)w, ++checkcnt);
1481 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482 checks [checkcnt - 1] = w;
1483}
1484
1485void
1486ev_check_stop (EV_P_ struct ev_check *w)
1487{
1488 ev_clear_pending (EV_A_ (W)w);
1489 if (!ev_is_active (w))
1490 return;
1491
1492 checks [((W)w)->active - 1] = checks [--checkcnt];
1493 ev_stop (EV_A_ (W)w);
1494}
1495
1496#ifndef SA_RESTART 1842#ifndef SA_RESTART
1497# define SA_RESTART 0 1843# define SA_RESTART 0
1498#endif 1844#endif
1499 1845
1500void 1846void noinline
1501ev_signal_start (EV_P_ struct ev_signal *w) 1847ev_signal_start (EV_P_ ev_signal *w)
1502{ 1848{
1503#if EV_MULTIPLICITY 1849#if EV_MULTIPLICITY
1504 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1850 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505#endif 1851#endif
1506 if (ev_is_active (w)) 1852 if (expect_false (ev_is_active (w)))
1507 return; 1853 return;
1508 1854
1509 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1855 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510 1856
1857 {
1858#ifndef _WIN32
1859 sigset_t full, prev;
1860 sigfillset (&full);
1861 sigprocmask (SIG_SETMASK, &full, &prev);
1862#endif
1863
1864 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1865
1866#ifndef _WIN32
1867 sigprocmask (SIG_SETMASK, &prev, 0);
1868#endif
1869 }
1870
1511 ev_start (EV_A_ (W)w, 1); 1871 ev_start (EV_A_ (W)w, 1);
1512 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1872 wlist_add (&signals [w->signum - 1].head, (WL)w);
1514 1873
1515 if (!((WL)w)->next) 1874 if (!((WL)w)->next)
1516 { 1875 {
1517#if WIN32 1876#if _WIN32
1518 signal (w->signum, sighandler); 1877 signal (w->signum, sighandler);
1519#else 1878#else
1520 struct sigaction sa; 1879 struct sigaction sa;
1521 sa.sa_handler = sighandler; 1880 sa.sa_handler = sighandler;
1522 sigfillset (&sa.sa_mask); 1881 sigfillset (&sa.sa_mask);
… …
1524 sigaction (w->signum, &sa, 0); 1883 sigaction (w->signum, &sa, 0);
1525#endif 1884#endif
1526 } 1885 }
1527} 1886}
1528 1887
1529void 1888void noinline
1530ev_signal_stop (EV_P_ struct ev_signal *w) 1889ev_signal_stop (EV_P_ ev_signal *w)
1531{ 1890{
1532 ev_clear_pending (EV_A_ (W)w); 1891 clear_pending (EV_A_ (W)w);
1533 if (!ev_is_active (w)) 1892 if (expect_false (!ev_is_active (w)))
1534 return; 1893 return;
1535 1894
1536 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1895 wlist_del (&signals [w->signum - 1].head, (WL)w);
1537 ev_stop (EV_A_ (W)w); 1896 ev_stop (EV_A_ (W)w);
1538 1897
1539 if (!signals [w->signum - 1].head) 1898 if (!signals [w->signum - 1].head)
1540 signal (w->signum, SIG_DFL); 1899 signal (w->signum, SIG_DFL);
1541} 1900}
1542 1901
1543void 1902void
1544ev_child_start (EV_P_ struct ev_child *w) 1903ev_child_start (EV_P_ ev_child *w)
1545{ 1904{
1546#if EV_MULTIPLICITY 1905#if EV_MULTIPLICITY
1547 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1906 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548#endif 1907#endif
1549 if (ev_is_active (w)) 1908 if (expect_false (ev_is_active (w)))
1550 return; 1909 return;
1551 1910
1552 ev_start (EV_A_ (W)w, 1); 1911 ev_start (EV_A_ (W)w, 1);
1553 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1912 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554} 1913}
1555 1914
1556void 1915void
1557ev_child_stop (EV_P_ struct ev_child *w) 1916ev_child_stop (EV_P_ ev_child *w)
1558{ 1917{
1559 ev_clear_pending (EV_A_ (W)w); 1918 clear_pending (EV_A_ (W)w);
1560 if (!ev_is_active (w)) 1919 if (expect_false (!ev_is_active (w)))
1561 return; 1920 return;
1562 1921
1563 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1922 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564 ev_stop (EV_A_ (W)w); 1923 ev_stop (EV_A_ (W)w);
1565} 1924}
1566 1925
1926#if EV_STAT_ENABLE
1927
1928# ifdef _WIN32
1929# undef lstat
1930# define lstat(a,b) _stati64 (a,b)
1931# endif
1932
1933#define DEF_STAT_INTERVAL 5.0074891
1934#define MIN_STAT_INTERVAL 0.1074891
1935
1936static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1937
1938#if EV_USE_INOTIFY
1939# define EV_INOTIFY_BUFSIZE 8192
1940
1941static void noinline
1942infy_add (EV_P_ ev_stat *w)
1943{
1944 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);
1945
1946 if (w->wd < 0)
1947 {
1948 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1949
1950 /* monitor some parent directory for speedup hints */
1951 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1952 {
1953 char path [4096];
1954 strcpy (path, w->path);
1955
1956 do
1957 {
1958 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1959 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1960
1961 char *pend = strrchr (path, '/');
1962
1963 if (!pend)
1964 break; /* whoops, no '/', complain to your admin */
1965
1966 *pend = 0;
1967 w->wd = inotify_add_watch (fs_fd, path, mask);
1968 }
1969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1970 }
1971 }
1972 else
1973 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1974
1975 if (w->wd >= 0)
1976 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1977}
1978
1979static void noinline
1980infy_del (EV_P_ ev_stat *w)
1981{
1982 int slot;
1983 int wd = w->wd;
1984
1985 if (wd < 0)
1986 return;
1987
1988 w->wd = -2;
1989 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1990 wlist_del (&fs_hash [slot].head, (WL)w);
1991
1992 /* remove this watcher, if others are watching it, they will rearm */
1993 inotify_rm_watch (fs_fd, wd);
1994}
1995
1996static void noinline
1997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1998{
1999 if (slot < 0)
2000 /* overflow, need to check for all hahs slots */
2001 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2002 infy_wd (EV_A_ slot, wd, ev);
2003 else
2004 {
2005 WL w_;
2006
2007 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2008 {
2009 ev_stat *w = (ev_stat *)w_;
2010 w_ = w_->next; /* lets us remove this watcher and all before it */
2011
2012 if (w->wd == wd || wd == -1)
2013 {
2014 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2015 {
2016 w->wd = -1;
2017 infy_add (EV_A_ w); /* re-add, no matter what */
2018 }
2019
2020 stat_timer_cb (EV_A_ &w->timer, 0);
2021 }
2022 }
2023 }
2024}
2025
2026static void
2027infy_cb (EV_P_ ev_io *w, int revents)
2028{
2029 char buf [EV_INOTIFY_BUFSIZE];
2030 struct inotify_event *ev = (struct inotify_event *)buf;
2031 int ofs;
2032 int len = read (fs_fd, buf, sizeof (buf));
2033
2034 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2035 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2036}
2037
2038void inline_size
2039infy_init (EV_P)
2040{
2041 if (fs_fd != -2)
2042 return;
2043
2044 fs_fd = inotify_init ();
2045
2046 if (fs_fd >= 0)
2047 {
2048 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2049 ev_set_priority (&fs_w, EV_MAXPRI);
2050 ev_io_start (EV_A_ &fs_w);
2051 }
2052}
2053
2054void inline_size
2055infy_fork (EV_P)
2056{
2057 int slot;
2058
2059 if (fs_fd < 0)
2060 return;
2061
2062 close (fs_fd);
2063 fs_fd = inotify_init ();
2064
2065 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2066 {
2067 WL w_ = fs_hash [slot].head;
2068 fs_hash [slot].head = 0;
2069
2070 while (w_)
2071 {
2072 ev_stat *w = (ev_stat *)w_;
2073 w_ = w_->next; /* lets us add this watcher */
2074
2075 w->wd = -1;
2076
2077 if (fs_fd >= 0)
2078 infy_add (EV_A_ w); /* re-add, no matter what */
2079 else
2080 ev_timer_start (EV_A_ &w->timer);
2081 }
2082
2083 }
2084}
2085
2086#endif
2087
2088void
2089ev_stat_stat (EV_P_ ev_stat *w)
2090{
2091 if (lstat (w->path, &w->attr) < 0)
2092 w->attr.st_nlink = 0;
2093 else if (!w->attr.st_nlink)
2094 w->attr.st_nlink = 1;
2095}
2096
2097static void noinline
2098stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2099{
2100 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2101
2102 /* we copy this here each the time so that */
2103 /* prev has the old value when the callback gets invoked */
2104 w->prev = w->attr;
2105 ev_stat_stat (EV_A_ w);
2106
2107 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2108 if (
2109 w->prev.st_dev != w->attr.st_dev
2110 || w->prev.st_ino != w->attr.st_ino
2111 || w->prev.st_mode != w->attr.st_mode
2112 || w->prev.st_nlink != w->attr.st_nlink
2113 || w->prev.st_uid != w->attr.st_uid
2114 || w->prev.st_gid != w->attr.st_gid
2115 || w->prev.st_rdev != w->attr.st_rdev
2116 || w->prev.st_size != w->attr.st_size
2117 || w->prev.st_atime != w->attr.st_atime
2118 || w->prev.st_mtime != w->attr.st_mtime
2119 || w->prev.st_ctime != w->attr.st_ctime
2120 ) {
2121 #if EV_USE_INOTIFY
2122 infy_del (EV_A_ w);
2123 infy_add (EV_A_ w);
2124 ev_stat_stat (EV_A_ w); /* avoid race... */
2125 #endif
2126
2127 ev_feed_event (EV_A_ w, EV_STAT);
2128 }
2129}
2130
2131void
2132ev_stat_start (EV_P_ ev_stat *w)
2133{
2134 if (expect_false (ev_is_active (w)))
2135 return;
2136
2137 /* since we use memcmp, we need to clear any padding data etc. */
2138 memset (&w->prev, 0, sizeof (ev_statdata));
2139 memset (&w->attr, 0, sizeof (ev_statdata));
2140
2141 ev_stat_stat (EV_A_ w);
2142
2143 if (w->interval < MIN_STAT_INTERVAL)
2144 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2145
2146 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2147 ev_set_priority (&w->timer, ev_priority (w));
2148
2149#if EV_USE_INOTIFY
2150 infy_init (EV_A);
2151
2152 if (fs_fd >= 0)
2153 infy_add (EV_A_ w);
2154 else
2155#endif
2156 ev_timer_start (EV_A_ &w->timer);
2157
2158 ev_start (EV_A_ (W)w, 1);
2159}
2160
2161void
2162ev_stat_stop (EV_P_ ev_stat *w)
2163{
2164 clear_pending (EV_A_ (W)w);
2165 if (expect_false (!ev_is_active (w)))
2166 return;
2167
2168#if EV_USE_INOTIFY
2169 infy_del (EV_A_ w);
2170#endif
2171 ev_timer_stop (EV_A_ &w->timer);
2172
2173 ev_stop (EV_A_ (W)w);
2174}
2175#endif
2176
2177#if EV_IDLE_ENABLE
2178void
2179ev_idle_start (EV_P_ ev_idle *w)
2180{
2181 if (expect_false (ev_is_active (w)))
2182 return;
2183
2184 pri_adjust (EV_A_ (W)w);
2185
2186 {
2187 int active = ++idlecnt [ABSPRI (w)];
2188
2189 ++idleall;
2190 ev_start (EV_A_ (W)w, active);
2191
2192 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2193 idles [ABSPRI (w)][active - 1] = w;
2194 }
2195}
2196
2197void
2198ev_idle_stop (EV_P_ ev_idle *w)
2199{
2200 clear_pending (EV_A_ (W)w);
2201 if (expect_false (!ev_is_active (w)))
2202 return;
2203
2204 {
2205 int active = ((W)w)->active;
2206
2207 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2208 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2209
2210 ev_stop (EV_A_ (W)w);
2211 --idleall;
2212 }
2213}
2214#endif
2215
2216void
2217ev_prepare_start (EV_P_ ev_prepare *w)
2218{
2219 if (expect_false (ev_is_active (w)))
2220 return;
2221
2222 ev_start (EV_A_ (W)w, ++preparecnt);
2223 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2224 prepares [preparecnt - 1] = w;
2225}
2226
2227void
2228ev_prepare_stop (EV_P_ ev_prepare *w)
2229{
2230 clear_pending (EV_A_ (W)w);
2231 if (expect_false (!ev_is_active (w)))
2232 return;
2233
2234 {
2235 int active = ((W)w)->active;
2236 prepares [active - 1] = prepares [--preparecnt];
2237 ((W)prepares [active - 1])->active = active;
2238 }
2239
2240 ev_stop (EV_A_ (W)w);
2241}
2242
2243void
2244ev_check_start (EV_P_ ev_check *w)
2245{
2246 if (expect_false (ev_is_active (w)))
2247 return;
2248
2249 ev_start (EV_A_ (W)w, ++checkcnt);
2250 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2251 checks [checkcnt - 1] = w;
2252}
2253
2254void
2255ev_check_stop (EV_P_ ev_check *w)
2256{
2257 clear_pending (EV_A_ (W)w);
2258 if (expect_false (!ev_is_active (w)))
2259 return;
2260
2261 {
2262 int active = ((W)w)->active;
2263 checks [active - 1] = checks [--checkcnt];
2264 ((W)checks [active - 1])->active = active;
2265 }
2266
2267 ev_stop (EV_A_ (W)w);
2268}
2269
2270#if EV_EMBED_ENABLE
2271void noinline
2272ev_embed_sweep (EV_P_ ev_embed *w)
2273{
2274 ev_loop (w->other, EVLOOP_NONBLOCK);
2275}
2276
2277static void
2278embed_io_cb (EV_P_ ev_io *io, int revents)
2279{
2280 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2281
2282 if (ev_cb (w))
2283 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2284 else
2285 ev_loop (w->other, EVLOOP_NONBLOCK);
2286}
2287
2288static void
2289embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2290{
2291 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2292
2293 {
2294 struct ev_loop *loop = w->other;
2295
2296 while (fdchangecnt)
2297 {
2298 fd_reify (EV_A);
2299 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2300 }
2301 }
2302}
2303
2304#if 0
2305static void
2306embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2307{
2308 ev_idle_stop (EV_A_ idle);
2309}
2310#endif
2311
2312void
2313ev_embed_start (EV_P_ ev_embed *w)
2314{
2315 if (expect_false (ev_is_active (w)))
2316 return;
2317
2318 {
2319 struct ev_loop *loop = w->other;
2320 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2321 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2322 }
2323
2324 ev_set_priority (&w->io, ev_priority (w));
2325 ev_io_start (EV_A_ &w->io);
2326
2327 ev_prepare_init (&w->prepare, embed_prepare_cb);
2328 ev_set_priority (&w->prepare, EV_MINPRI);
2329 ev_prepare_start (EV_A_ &w->prepare);
2330
2331 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2332
2333 ev_start (EV_A_ (W)w, 1);
2334}
2335
2336void
2337ev_embed_stop (EV_P_ ev_embed *w)
2338{
2339 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w)))
2341 return;
2342
2343 ev_io_stop (EV_A_ &w->io);
2344 ev_prepare_stop (EV_A_ &w->prepare);
2345
2346 ev_stop (EV_A_ (W)w);
2347}
2348#endif
2349
2350#if EV_FORK_ENABLE
2351void
2352ev_fork_start (EV_P_ ev_fork *w)
2353{
2354 if (expect_false (ev_is_active (w)))
2355 return;
2356
2357 ev_start (EV_A_ (W)w, ++forkcnt);
2358 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2359 forks [forkcnt - 1] = w;
2360}
2361
2362void
2363ev_fork_stop (EV_P_ ev_fork *w)
2364{
2365 clear_pending (EV_A_ (W)w);
2366 if (expect_false (!ev_is_active (w)))
2367 return;
2368
2369 {
2370 int active = ((W)w)->active;
2371 forks [active - 1] = forks [--forkcnt];
2372 ((W)forks [active - 1])->active = active;
2373 }
2374
2375 ev_stop (EV_A_ (W)w);
2376}
2377#endif
2378
1567/*****************************************************************************/ 2379/*****************************************************************************/
1568 2380
1569struct ev_once 2381struct ev_once
1570{ 2382{
1571 struct ev_io io; 2383 ev_io io;
1572 struct ev_timer to; 2384 ev_timer to;
1573 void (*cb)(int revents, void *arg); 2385 void (*cb)(int revents, void *arg);
1574 void *arg; 2386 void *arg;
1575}; 2387};
1576 2388
1577static void 2389static void
… …
1586 2398
1587 cb (revents, arg); 2399 cb (revents, arg);
1588} 2400}
1589 2401
1590static void 2402static void
1591once_cb_io (EV_P_ struct ev_io *w, int revents) 2403once_cb_io (EV_P_ ev_io *w, int revents)
1592{ 2404{
1593 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2405 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594} 2406}
1595 2407
1596static void 2408static void
1597once_cb_to (EV_P_ struct ev_timer *w, int revents) 2409once_cb_to (EV_P_ ev_timer *w, int revents)
1598{ 2410{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2411 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600} 2412}
1601 2413
1602void 2414void
1603ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2415ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604{ 2416{
1605 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2417 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606 2418
1607 if (!once) 2419 if (expect_false (!once))
2420 {
1608 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2421 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609 else 2422 return;
1610 { 2423 }
2424
1611 once->cb = cb; 2425 once->cb = cb;
1612 once->arg = arg; 2426 once->arg = arg;
1613 2427
1614 ev_init (&once->io, once_cb_io); 2428 ev_init (&once->io, once_cb_io);
1615 if (fd >= 0) 2429 if (fd >= 0)
1616 { 2430 {
1617 ev_io_set (&once->io, fd, events); 2431 ev_io_set (&once->io, fd, events);
1618 ev_io_start (EV_A_ &once->io); 2432 ev_io_start (EV_A_ &once->io);
1619 } 2433 }
1620 2434
1621 ev_init (&once->to, once_cb_to); 2435 ev_init (&once->to, once_cb_to);
1622 if (timeout >= 0.) 2436 if (timeout >= 0.)
1623 { 2437 {
1624 ev_timer_set (&once->to, timeout, 0.); 2438 ev_timer_set (&once->to, timeout, 0.);
1625 ev_timer_start (EV_A_ &once->to); 2439 ev_timer_start (EV_A_ &once->to);
1626 }
1627 } 2440 }
1628} 2441}
2442
2443#if EV_MULTIPLICITY
2444 #include "ev_wrap.h"
2445#endif
1629 2446
1630#ifdef __cplusplus 2447#ifdef __cplusplus
1631} 2448}
1632#endif 2449#endif
1633 2450

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