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Comparing libev/ev.c (file contents):
Revision 1.76 by root, Wed Nov 7 18:47:26 2007 UTC vs.
Revision 1.203 by root, Fri Jan 18 11:31:02 2008 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 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
31#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
32# include "config.h" 48# include "config.h"
49# endif
33 50
34# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
54# endif
55# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 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
37# endif 65# endif
38 66
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
41# endif 73# endif
42 74
43# if HAVE_POLL && HAVE_POLL_H 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
45# endif 81# endif
46 82
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
49# endif 89# endif
50 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
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# 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
53# endif 121# endif
54 122
55#endif 123#endif
56 124
57#include <math.h> 125#include <math.h>
… …
66#include <sys/types.h> 134#include <sys/types.h>
67#include <time.h> 135#include <time.h>
68 136
69#include <signal.h> 137#include <signal.h>
70 138
139#ifdef EV_H
140# include EV_H
141#else
142# include "ev.h"
143#endif
144
71#ifndef WIN32 145#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 146# include <sys/time.h>
74# 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
75#endif 154# endif
155#endif
156
76/**/ 157/**/
77 158
78#ifndef EV_USE_MONOTONIC 159#ifndef EV_USE_MONOTONIC
79# 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
80#endif 169#endif
81 170
82#ifndef EV_USE_SELECT 171#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 172# define EV_USE_SELECT 1
84#endif 173#endif
85 174
86#ifndef EV_USE_POLL 175#ifndef EV_USE_POLL
87# define EV_USE_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
88#endif 181#endif
89 182
90#ifndef EV_USE_EPOLL 183#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 184# define EV_USE_EPOLL 0
92#endif 185#endif
93 186
94#ifndef EV_USE_KQUEUE 187#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 188# define EV_USE_KQUEUE 0
96#endif 189#endif
97 190
191#ifndef EV_USE_PORT
192# define EV_USE_PORT 0
193#endif
194
98#ifndef EV_USE_WIN32 195#ifndef EV_USE_INOTIFY
99# ifdef WIN32 196# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 197#endif
101# undef EV_USE_SELECT 198
102# define EV_USE_SELECT 1 199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
103# else 202# else
104# define EV_USE_WIN32 0 203# define EV_PID_HASHSIZE 16
105# endif 204# endif
106#endif 205#endif
107 206
108#ifndef EV_USE_REALTIME 207#ifndef EV_INOTIFY_HASHSIZE
109# define EV_USE_REALTIME 1 208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
110#endif 213#endif
111 214
112/**/ 215/**/
113 216
114#ifndef CLOCK_MONOTONIC 217#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 222#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 223# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 224# define EV_USE_REALTIME 0
122#endif 225#endif
123 226
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
124/**/ 246/**/
125 247
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
126#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) */
127#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) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#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 */
130 261
131#include "ev.h"
132
133#if __GNUC__ >= 3 262#if __GNUC__ >= 4
134# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 264# define noinline __attribute__ ((noinline))
136#else 265#else
137# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
138# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
139#endif 271#endif
140 272
141#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
142#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
143 282
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
147typedef struct ev_watcher *W; 289typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
150 292
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 */
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
152 298
299#ifdef _WIN32
153#include "ev_win32.c" 300# include "ev_win32.c"
301#endif
154 302
155/*****************************************************************************/ 303/*****************************************************************************/
156 304
157static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
158 306
307void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 309{
161 syserr_cb = cb; 310 syserr_cb = cb;
162} 311}
163 312
164static void 313static void noinline
165syserr (const char *msg) 314syserr (const char *msg)
166{ 315{
167 if (!msg) 316 if (!msg)
168 msg = "(libev) system error"; 317 msg = "(libev) system error";
169 318
… …
176 } 325 }
177} 326}
178 327
179static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
180 329
330void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 332{
183 alloc = cb; 333 alloc = cb;
184} 334}
185 335
186static void * 336inline_speed void *
187ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
188{ 338{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190 340
191 if (!ptr && size) 341 if (!ptr && size)
… …
205typedef struct 355typedef struct
206{ 356{
207 WL head; 357 WL head;
208 unsigned char events; 358 unsigned char events;
209 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
210} ANFD; 363} ANFD;
211 364
212typedef struct 365typedef struct
213{ 366{
214 W w; 367 W w;
215 int events; 368 int events;
216} ANPENDING; 369} ANPENDING;
217 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
218#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
219 379
220struct ev_loop 380 struct ev_loop
221{ 381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
223# include "ev_vars.h" 385 #include "ev_vars.h"
224};
225# undef VAR 386 #undef VAR
387 };
226# 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;
227 392
228#else 393#else
229 394
395 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 397 #include "ev_vars.h"
232# undef VAR 398 #undef VAR
399
400 static int ev_default_loop_ptr;
233 401
234#endif 402#endif
235 403
236/*****************************************************************************/ 404/*****************************************************************************/
237 405
238inline ev_tstamp 406ev_tstamp
239ev_time (void) 407ev_time (void)
240{ 408{
241#if EV_USE_REALTIME 409#if EV_USE_REALTIME
242 struct timespec ts; 410 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
… …
247 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
248 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
249#endif 417#endif
250} 418}
251 419
252inline ev_tstamp 420ev_tstamp inline_size
253get_clock (void) 421get_clock (void)
254{ 422{
255#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
256 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
257 { 425 {
… …
262#endif 430#endif
263 431
264 return ev_time (); 432 return ev_time ();
265} 433}
266 434
435#if EV_MULTIPLICITY
267ev_tstamp 436ev_tstamp
268ev_now (EV_P) 437ev_now (EV_P)
269{ 438{
270 return rt_now; 439 return ev_rt_now;
271} 440}
441#endif
272 442
273#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}
274 497
275#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
277 { \ 500 { \
278 int newcnt = cur; \ 501 int ocur_ = (cur); \
279 do \ 502 (base) = (type *)array_realloc \
280 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
281 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
282 } \
283 while ((cnt) > newcnt); \
284 \
285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286 init (base + cur, newcnt - cur); \
287 cur = newcnt; \
288 } 505 }
289 506
507#if 0
290#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \ 510 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 514 }
297 515#endif
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302 516
303#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
304 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;
305 519
306/*****************************************************************************/ 520/*****************************************************************************/
307 521
308static 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
309anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
310{ 552{
311 while (count--) 553 while (count--)
312 { 554 {
313 base->head = 0; 555 base->head = 0;
… …
316 558
317 ++base; 559 ++base;
318 } 560 }
319} 561}
320 562
321static void 563void inline_speed
322event (EV_P_ W w, int events)
323{
324 if (w->pending)
325 {
326 pendings [ABSPRI (w)][w->pending - 1].events |= events;
327 return;
328 }
329
330 w->pending = ++pendingcnt [ABSPRI (w)];
331 array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
332 pendings [ABSPRI (w)][w->pending - 1].w = w;
333 pendings [ABSPRI (w)][w->pending - 1].events = events;
334}
335
336static void
337queue_events (EV_P_ W *events, int eventcnt, int type)
338{
339 int i;
340
341 for (i = 0; i < eventcnt; ++i)
342 event (EV_A_ events [i], type);
343}
344
345static void
346fd_event (EV_P_ int fd, int events) 564fd_event (EV_P_ int fd, int revents)
347{ 565{
348 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
349 struct ev_io *w; 567 ev_io *w;
350 568
351 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)
352 { 570 {
353 int ev = w->events & events; 571 int ev = w->events & revents;
354 572
355 if (ev) 573 if (ev)
356 event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
357 } 575 }
358} 576}
359 577
360/*****************************************************************************/ 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}
361 584
362static void 585void inline_size
363fd_reify (EV_P) 586fd_reify (EV_P)
364{ 587{
365 int i; 588 int i;
366 589
367 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
368 { 591 {
369 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
370 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
371 struct ev_io *w; 594 ev_io *w;
372 595
373 int events = 0; 596 unsigned char events = 0;
374 597
375 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)
376 events |= w->events; 599 events |= (unsigned char)w->events;
377 600
601#if EV_SELECT_IS_WINSOCKET
602 if (events)
603 {
604 unsigned long argp;
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));
611 }
612#endif
613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
378 anfd->reify = 0; 618 anfd->reify = 0;
379
380 method_modify (EV_A_ fd, anfd->events, events);
381 anfd->events = events; 619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
382 } 624 }
383 625
384 fdchangecnt = 0; 626 fdchangecnt = 0;
385} 627}
386 628
387static void 629void inline_size
388fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
389{ 631{
390 if (anfds [fd].reify) 632 unsigned char reify = anfds [fd].reify;
391 return;
392
393 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
394 634
635 if (expect_true (!reify))
636 {
395 ++fdchangecnt; 637 ++fdchangecnt;
396 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
398} 641}
399 642
400static void 643void inline_speed
401fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
402{ 645{
403 struct ev_io *w; 646 ev_io *w;
404 647
405 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
406 { 649 {
407 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
408 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);
409 } 652 }
410} 653}
411 654
412static int 655int inline_size
413fd_valid (int fd) 656fd_valid (int fd)
414{ 657{
415#ifdef WIN32 658#ifdef _WIN32
416 return !!win32_get_osfhandle (fd); 659 return _get_osfhandle (fd) != -1;
417#else 660#else
418 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
419#endif 662#endif
420} 663}
421 664
422/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
423static void 666static void noinline
424fd_ebadf (EV_P) 667fd_ebadf (EV_P)
425{ 668{
426 int fd; 669 int fd;
427 670
428 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
430 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
431 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
432} 675}
433 676
434/* 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 */
435static void 678static void noinline
436fd_enomem (EV_P) 679fd_enomem (EV_P)
437{ 680{
438 int fd; 681 int fd;
439 682
440 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
443 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
444 return; 687 return;
445 } 688 }
446} 689}
447 690
448/* usually 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 */
449static void 692static void noinline
450fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
451{ 694{
452 int fd; 695 int fd;
453 696
454 /* this should be highly optimised to not do anything but set a flag */
455 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
456 if (anfds [fd].events) 698 if (anfds [fd].events)
457 { 699 {
458 anfds [fd].events = 0; 700 anfds [fd].events = 0;
459 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
460 } 702 }
461} 703}
462 704
463/*****************************************************************************/ 705/*****************************************************************************/
464 706
465static void 707void inline_speed
466upheap (WT *heap, int k) 708upheap (WT *heap, int k)
467{ 709{
468 WT w = heap [k]; 710 WT w = heap [k];
469 711
470 while (k && heap [k >> 1]->at > w->at) 712 while (k)
471 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
472 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
473 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
474 k >>= 1; 721 k = p;
475 } 722 }
476 723
477 heap [k] = w; 724 heap [k] = w;
478 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
479
480} 726}
481 727
482static void 728void inline_speed
483downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
484{ 730{
485 WT w = heap [k]; 731 WT w = heap [k];
486 732
487 while (k < (N >> 1)) 733 for (;;)
488 { 734 {
489 int j = k << 1; 735 int c = (k << 1) + 1;
490 736
491 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
492 ++j;
493
494 if (w->at <= heap [j]->at)
495 break; 738 break;
496 739
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
497 heap [k] = heap [j]; 746 heap [k] = heap [c];
498 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
499 k = j; 749 k = c;
500 } 750 }
501 751
502 heap [k] = w; 752 heap [k] = w;
503 ((W)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);
504} 761}
505 762
506/*****************************************************************************/ 763/*****************************************************************************/
507 764
508typedef struct 765typedef struct
… …
514static ANSIG *signals; 771static ANSIG *signals;
515static int signalmax; 772static int signalmax;
516 773
517static int sigpipe [2]; 774static int sigpipe [2];
518static sig_atomic_t volatile gotsig; 775static sig_atomic_t volatile gotsig;
519static struct ev_io sigev; 776static ev_io sigev;
520 777
521static void 778void inline_size
522signals_init (ANSIG *base, int count) 779signals_init (ANSIG *base, int count)
523{ 780{
524 while (count--) 781 while (count--)
525 { 782 {
526 base->head = 0; 783 base->head = 0;
… …
531} 788}
532 789
533static void 790static void
534sighandler (int signum) 791sighandler (int signum)
535{ 792{
536#if WIN32 793#if _WIN32
537 signal (signum, sighandler); 794 signal (signum, sighandler);
538#endif 795#endif
539 796
540 signals [signum - 1].gotsig = 1; 797 signals [signum - 1].gotsig = 1;
541 798
542 if (!gotsig) 799 if (!gotsig)
543 { 800 {
544 int old_errno = errno; 801 int old_errno = errno;
545 gotsig = 1; 802 gotsig = 1;
546#ifdef WIN32
547 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548#else
549 write (sigpipe [1], &signum, 1); 803 write (sigpipe [1], &signum, 1);
550#endif
551 errno = old_errno; 804 errno = old_errno;
552 } 805 }
553} 806}
554 807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
826}
827
555static void 828static void
556sigcb (EV_P_ struct ev_io *iow, int revents) 829sigcb (EV_P_ ev_io *iow, int revents)
557{ 830{
558 WL w;
559 int signum; 831 int signum;
560 832
561#ifdef WIN32
562 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563#else
564 read (sigpipe [0], &revents, 1); 833 read (sigpipe [0], &revents, 1);
565#endif
566 gotsig = 0; 834 gotsig = 0;
567 835
568 for (signum = signalmax; signum--; ) 836 for (signum = signalmax; signum--; )
569 if (signals [signum].gotsig) 837 if (signals [signum].gotsig)
570 { 838 ev_feed_signal_event (EV_A_ signum + 1);
571 signals [signum].gotsig = 0;
572
573 for (w = signals [signum].head; w; w = w->next)
574 event (EV_A_ (W)w, EV_SIGNAL);
575 }
576} 839}
577 840
578static void 841void inline_speed
842fd_intern (int fd)
843{
844#ifdef _WIN32
845 int arg = 1;
846 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
847#else
848 fcntl (fd, F_SETFD, FD_CLOEXEC);
849 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif
851}
852
853static void noinline
579siginit (EV_P) 854siginit (EV_P)
580{ 855{
581#ifndef WIN32 856 fd_intern (sigpipe [0]);
582 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 857 fd_intern (sigpipe [1]);
583 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585 /* rather than sort out wether we really need nb, set it */
586 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588#endif
589 858
590 ev_io_set (&sigev, sigpipe [0], EV_READ); 859 ev_io_set (&sigev, sigpipe [0], EV_READ);
591 ev_io_start (EV_A_ &sigev); 860 ev_io_start (EV_A_ &sigev);
592 ev_unref (EV_A); /* child watcher should not keep loop alive */ 861 ev_unref (EV_A); /* child watcher should not keep loop alive */
593} 862}
594 863
595/*****************************************************************************/ 864/*****************************************************************************/
596 865
597static struct ev_child *childs [PID_HASHSIZE]; 866static WL childs [EV_PID_HASHSIZE];
598 867
599#ifndef WIN32 868#ifndef _WIN32
600 869
601static struct ev_signal childev; 870static ev_signal childev;
871
872void inline_speed
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
874{
875 ev_child *w;
876
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
878 if (w->pid == pid || !w->pid)
879 {
880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
881 w->rpid = pid;
882 w->rstatus = status;
883 ev_feed_event (EV_A_ (W)w, EV_CHILD);
884 }
885}
602 886
603#ifndef WCONTINUED 887#ifndef WCONTINUED
604# define WCONTINUED 0 888# define WCONTINUED 0
605#endif 889#endif
606 890
607static void 891static void
608child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
609{
610 struct ev_child *w;
611
612 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
613 if (w->pid == pid || !w->pid)
614 {
615 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
616 w->rpid = pid;
617 w->rstatus = status;
618 event (EV_A_ (W)w, EV_CHILD);
619 }
620}
621
622static void
623childcb (EV_P_ struct ev_signal *sw, int revents) 892childcb (EV_P_ ev_signal *sw, int revents)
624{ 893{
625 int pid, status; 894 int pid, status;
626 895
896 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 897 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628 { 898 if (!WCONTINUED
899 || errno != EINVAL
900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
901 return;
902
629 /* make sure we are called again until all childs have been reaped */ 903 /* make sure we are called again until all childs have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */
630 event (EV_A_ (W)sw, EV_SIGNAL); 905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631 906
632 child_reap (EV_A_ sw, pid, pid, status); 907 child_reap (EV_A_ sw, pid, pid, status);
908 if (EV_PID_HASHSIZE > 1)
633 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634 }
635} 910}
636 911
637#endif 912#endif
638 913
639/*****************************************************************************/ 914/*****************************************************************************/
640 915
916#if EV_USE_PORT
917# include "ev_port.c"
918#endif
641#if EV_USE_KQUEUE 919#if EV_USE_KQUEUE
642# include "ev_kqueue.c" 920# include "ev_kqueue.c"
643#endif 921#endif
644#if EV_USE_EPOLL 922#if EV_USE_EPOLL
645# include "ev_epoll.c" 923# include "ev_epoll.c"
… …
662{ 940{
663 return EV_VERSION_MINOR; 941 return EV_VERSION_MINOR;
664} 942}
665 943
666/* return true if we are running with elevated privileges and should ignore env variables */ 944/* return true if we are running with elevated privileges and should ignore env variables */
667static int 945int inline_size
668enable_secure (void) 946enable_secure (void)
669{ 947{
670#ifdef WIN32 948#ifdef _WIN32
671 return 0; 949 return 0;
672#else 950#else
673 return getuid () != geteuid () 951 return getuid () != geteuid ()
674 || getgid () != getegid (); 952 || getgid () != getegid ();
675#endif 953#endif
676} 954}
677 955
678int 956unsigned int
679ev_method (EV_P) 957ev_supported_backends (void)
680{ 958{
681 return method; 959 unsigned int flags = 0;
682}
683 960
684static void 961 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685loop_init (EV_P_ int methods) 962 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
963 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
964 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
965 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
966
967 return flags;
968}
969
970unsigned int
971ev_recommended_backends (void)
686{ 972{
687 if (!method) 973 unsigned int flags = ev_supported_backends ();
974
975#ifndef __NetBSD__
976 /* kqueue is borked on everything but netbsd apparently */
977 /* it usually doesn't work correctly on anything but sockets and pipes */
978 flags &= ~EVBACKEND_KQUEUE;
979#endif
980#ifdef __APPLE__
981 // flags &= ~EVBACKEND_KQUEUE; for documentation
982 flags &= ~EVBACKEND_POLL;
983#endif
984
985 return flags;
986}
987
988unsigned int
989ev_embeddable_backends (void)
990{
991 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
992
993 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
994 /* please fix it and tell me how to detect the fix */
995 flags &= ~EVBACKEND_EPOLL;
996
997 return flags;
998}
999
1000unsigned int
1001ev_backend (EV_P)
1002{
1003 return backend;
1004}
1005
1006unsigned int
1007ev_loop_count (EV_P)
1008{
1009 return loop_count;
1010}
1011
1012void
1013ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1014{
1015 io_blocktime = interval;
1016}
1017
1018void
1019ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1020{
1021 timeout_blocktime = interval;
1022}
1023
1024static void noinline
1025loop_init (EV_P_ unsigned int flags)
1026{
1027 if (!backend)
688 { 1028 {
689#if EV_USE_MONOTONIC 1029#if EV_USE_MONOTONIC
690 { 1030 {
691 struct timespec ts; 1031 struct timespec ts;
692 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693 have_monotonic = 1; 1033 have_monotonic = 1;
694 } 1034 }
695#endif 1035#endif
696 1036
697 rt_now = ev_time (); 1037 ev_rt_now = ev_time ();
698 mn_now = get_clock (); 1038 mn_now = get_clock ();
699 now_floor = mn_now; 1039 now_floor = mn_now;
700 rtmn_diff = rt_now - mn_now; 1040 rtmn_diff = ev_rt_now - mn_now;
701 1041
702 if (methods == EVMETHOD_AUTO) 1042 io_blocktime = 0.;
703 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1043 timeout_blocktime = 0.;
1044
1045 /* pid check not overridable via env */
1046#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid ();
1049#endif
1050
1051 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS"))
704 methods = atoi (getenv ("LIBEV_METHODS")); 1054 flags = atoi (getenv ("LIBEV_FLAGS"));
705 else
706 methods = EVMETHOD_ANY;
707 1055
708 method = 0; 1056 if (!(flags & 0x0000ffffUL))
1057 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
709#if EV_USE_WIN32 1061#if EV_USE_INOTIFY
710 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1062 fs_fd = -2;
1063#endif
1064
1065#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711#endif 1067#endif
712#if EV_USE_KQUEUE 1068#if EV_USE_KQUEUE
713 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1069 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714#endif 1070#endif
715#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
716 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1072 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717#endif 1073#endif
718#if EV_USE_POLL 1074#if EV_USE_POLL
719 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1075 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720#endif 1076#endif
721#if EV_USE_SELECT 1077#if EV_USE_SELECT
722 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723#endif 1079#endif
724 1080
725 ev_watcher_init (&sigev, sigcb); 1081 ev_init (&sigev, sigcb);
726 ev_set_priority (&sigev, EV_MAXPRI); 1082 ev_set_priority (&sigev, EV_MAXPRI);
727 } 1083 }
728} 1084}
729 1085
730void 1086static void noinline
731loop_destroy (EV_P) 1087loop_destroy (EV_P)
732{ 1088{
733 int i; 1089 int i;
734 1090
735#if EV_USE_WIN32 1091#if EV_USE_INOTIFY
736 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1092 if (fs_fd >= 0)
1093 close (fs_fd);
1094#endif
1095
1096 if (backend_fd >= 0)
1097 close (backend_fd);
1098
1099#if EV_USE_PORT
1100 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737#endif 1101#endif
738#if EV_USE_KQUEUE 1102#if EV_USE_KQUEUE
739 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1103 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740#endif 1104#endif
741#if EV_USE_EPOLL 1105#if EV_USE_EPOLL
742 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1106 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743#endif 1107#endif
744#if EV_USE_POLL 1108#if EV_USE_POLL
745 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1109 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746#endif 1110#endif
747#if EV_USE_SELECT 1111#if EV_USE_SELECT
748 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1112 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749#endif 1113#endif
750 1114
751 for (i = NUMPRI; i--; ) 1115 for (i = NUMPRI; i--; )
1116 {
752 array_free (pending, [i]); 1117 array_free (pending, [i]);
1118#if EV_IDLE_ENABLE
1119 array_free (idle, [i]);
1120#endif
1121 }
1122
1123 ev_free (anfds); anfdmax = 0;
753 1124
754 /* have to use the microsoft-never-gets-it-right macro */ 1125 /* have to use the microsoft-never-gets-it-right macro */
755 array_free_microshit (fdchange); 1126 array_free (fdchange, EMPTY);
756 array_free_microshit (timer); 1127 array_free (timer, EMPTY);
757 array_free_microshit (periodic); 1128#if EV_PERIODIC_ENABLE
758 array_free_microshit (idle); 1129 array_free (periodic, EMPTY);
759 array_free_microshit (prepare); 1130#endif
760 array_free_microshit (check); 1131#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY);
1133#endif
1134 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY);
761 1136
762 method = 0; 1137 backend = 0;
763} 1138}
764 1139
765static void 1140void inline_size infy_fork (EV_P);
1141
1142void inline_size
766loop_fork (EV_P) 1143loop_fork (EV_P)
767{ 1144{
1145#if EV_USE_PORT
1146 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1147#endif
1148#if EV_USE_KQUEUE
1149 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1150#endif
768#if EV_USE_EPOLL 1151#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1152 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770#endif 1153#endif
771#if EV_USE_KQUEUE 1154#if EV_USE_INOTIFY
772 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1155 infy_fork (EV_A);
773#endif 1156#endif
774 1157
775 if (ev_is_active (&sigev)) 1158 if (ev_is_active (&sigev))
776 { 1159 {
777 /* default loop */ 1160 /* default loop */
… …
783 1166
784 while (pipe (sigpipe)) 1167 while (pipe (sigpipe))
785 syserr ("(libev) error creating pipe"); 1168 syserr ("(libev) error creating pipe");
786 1169
787 siginit (EV_A); 1170 siginit (EV_A);
1171 sigcb (EV_A_ &sigev, EV_READ);
788 } 1172 }
789 1173
790 postfork = 0; 1174 postfork = 0;
791} 1175}
792 1176
793#if EV_MULTIPLICITY 1177#if EV_MULTIPLICITY
794struct ev_loop * 1178struct ev_loop *
795ev_loop_new (int methods) 1179ev_loop_new (unsigned int flags)
796{ 1180{
797 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1181 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798 1182
799 memset (loop, 0, sizeof (struct ev_loop)); 1183 memset (loop, 0, sizeof (struct ev_loop));
800 1184
801 loop_init (EV_A_ methods); 1185 loop_init (EV_A_ flags);
802 1186
803 if (ev_method (EV_A)) 1187 if (ev_backend (EV_A))
804 return loop; 1188 return loop;
805 1189
806 return 0; 1190 return 0;
807} 1191}
808 1192
… …
820} 1204}
821 1205
822#endif 1206#endif
823 1207
824#if EV_MULTIPLICITY 1208#if EV_MULTIPLICITY
825struct ev_loop default_loop_struct;
826static struct ev_loop *default_loop;
827
828struct ev_loop * 1209struct ev_loop *
1210ev_default_loop_init (unsigned int flags)
829#else 1211#else
830static int default_loop;
831
832int 1212int
1213ev_default_loop (unsigned int flags)
833#endif 1214#endif
834ev_default_loop (int methods)
835{ 1215{
836 if (sigpipe [0] == sigpipe [1]) 1216 if (sigpipe [0] == sigpipe [1])
837 if (pipe (sigpipe)) 1217 if (pipe (sigpipe))
838 return 0; 1218 return 0;
839 1219
840 if (!default_loop) 1220 if (!ev_default_loop_ptr)
841 { 1221 {
842#if EV_MULTIPLICITY 1222#if EV_MULTIPLICITY
843 struct ev_loop *loop = default_loop = &default_loop_struct; 1223 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844#else 1224#else
845 default_loop = 1; 1225 ev_default_loop_ptr = 1;
846#endif 1226#endif
847 1227
848 loop_init (EV_A_ methods); 1228 loop_init (EV_A_ flags);
849 1229
850 if (ev_method (EV_A)) 1230 if (ev_backend (EV_A))
851 { 1231 {
852 siginit (EV_A); 1232 siginit (EV_A);
853 1233
854#ifndef WIN32 1234#ifndef _WIN32
855 ev_signal_init (&childev, childcb, SIGCHLD); 1235 ev_signal_init (&childev, childcb, SIGCHLD);
856 ev_set_priority (&childev, EV_MAXPRI); 1236 ev_set_priority (&childev, EV_MAXPRI);
857 ev_signal_start (EV_A_ &childev); 1237 ev_signal_start (EV_A_ &childev);
858 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1238 ev_unref (EV_A); /* child watcher should not keep loop alive */
859#endif 1239#endif
860 } 1240 }
861 else 1241 else
862 default_loop = 0; 1242 ev_default_loop_ptr = 0;
863 } 1243 }
864 1244
865 return default_loop; 1245 return ev_default_loop_ptr;
866} 1246}
867 1247
868void 1248void
869ev_default_destroy (void) 1249ev_default_destroy (void)
870{ 1250{
871#if EV_MULTIPLICITY 1251#if EV_MULTIPLICITY
872 struct ev_loop *loop = default_loop; 1252 struct ev_loop *loop = ev_default_loop_ptr;
873#endif 1253#endif
874 1254
875#ifndef WIN32 1255#ifndef _WIN32
876 ev_ref (EV_A); /* child watcher */ 1256 ev_ref (EV_A); /* child watcher */
877 ev_signal_stop (EV_A_ &childev); 1257 ev_signal_stop (EV_A_ &childev);
878#endif 1258#endif
879 1259
880 ev_ref (EV_A); /* signal watcher */ 1260 ev_ref (EV_A); /* signal watcher */
… …
888 1268
889void 1269void
890ev_default_fork (void) 1270ev_default_fork (void)
891{ 1271{
892#if EV_MULTIPLICITY 1272#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1273 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1274#endif
895 1275
896 if (method) 1276 if (backend)
897 postfork = 1; 1277 postfork = 1;
898} 1278}
899 1279
900/*****************************************************************************/ 1280/*****************************************************************************/
901 1281
902static int 1282void
903any_pending (EV_P) 1283ev_invoke (EV_P_ void *w, int revents)
904{ 1284{
905 int pri; 1285 EV_CB_INVOKE ((W)w, revents);
906
907 for (pri = NUMPRI; pri--; )
908 if (pendingcnt [pri])
909 return 1;
910
911 return 0;
912} 1286}
913 1287
914static void 1288void inline_speed
915call_pending (EV_P) 1289call_pending (EV_P)
916{ 1290{
917 int pri; 1291 int pri;
918 1292
919 for (pri = NUMPRI; pri--; ) 1293 for (pri = NUMPRI; pri--; )
920 while (pendingcnt [pri]) 1294 while (pendingcnt [pri])
921 { 1295 {
922 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1296 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923 1297
924 if (p->w) 1298 if (expect_true (p->w))
925 { 1299 {
1300 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1301
926 p->w->pending = 0; 1302 p->w->pending = 0;
927 p->w->cb (EV_A_ p->w, p->events); 1303 EV_CB_INVOKE (p->w, p->events);
928 } 1304 }
929 } 1305 }
930} 1306}
931 1307
932static void 1308void inline_size
933timers_reify (EV_P) 1309timers_reify (EV_P)
934{ 1310{
935 while (timercnt && ((WT)timers [0])->at <= mn_now) 1311 while (timercnt && ((WT)timers [0])->at <= mn_now)
936 { 1312 {
937 struct ev_timer *w = timers [0]; 1313 ev_timer *w = (ev_timer *)timers [0];
938 1314
939 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1315 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
940 1316
941 /* first reschedule or stop timer */ 1317 /* first reschedule or stop timer */
942 if (w->repeat) 1318 if (w->repeat)
943 { 1319 {
944 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1320 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1321
945 ((WT)w)->at = mn_now + w->repeat; 1322 ((WT)w)->at += w->repeat;
1323 if (((WT)w)->at < mn_now)
1324 ((WT)w)->at = mn_now;
1325
946 downheap ((WT *)timers, timercnt, 0); 1326 downheap (timers, timercnt, 0);
947 } 1327 }
948 else 1328 else
949 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1329 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950 1330
951 event (EV_A_ (W)w, EV_TIMEOUT); 1331 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952 } 1332 }
953} 1333}
954 1334
955static void 1335#if EV_PERIODIC_ENABLE
1336void inline_size
956periodics_reify (EV_P) 1337periodics_reify (EV_P)
957{ 1338{
958 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1339 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959 { 1340 {
960 struct ev_periodic *w = periodics [0]; 1341 ev_periodic *w = (ev_periodic *)periodics [0];
961 1342
962 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1343 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
963 1344
964 /* first reschedule or stop timer */ 1345 /* first reschedule or stop timer */
965 if (w->interval) 1346 if (w->reschedule_cb)
966 { 1347 {
1348 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1349 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1350 downheap (periodics, periodiccnt, 0);
1351 }
1352 else if (w->interval)
1353 {
967 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1354 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1355 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
968 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1356 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
969 downheap ((WT *)periodics, periodiccnt, 0); 1357 downheap (periodics, periodiccnt, 0);
970 } 1358 }
971 else 1359 else
972 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1360 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
973 1361
974 event (EV_A_ (W)w, EV_PERIODIC); 1362 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
975 } 1363 }
976} 1364}
977 1365
978static void 1366static void noinline
979periodics_reschedule (EV_P) 1367periodics_reschedule (EV_P)
980{ 1368{
981 int i; 1369 int i;
982 1370
983 /* adjust periodics after time jump */ 1371 /* adjust periodics after time jump */
984 for (i = 0; i < periodiccnt; ++i) 1372 for (i = 0; i < periodiccnt; ++i)
985 { 1373 {
986 struct ev_periodic *w = periodics [i]; 1374 ev_periodic *w = (ev_periodic *)periodics [i];
987 1375
1376 if (w->reschedule_cb)
1377 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
988 if (w->interval) 1378 else if (w->interval)
1379 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1380 }
1381
1382 /* now rebuild the heap */
1383 for (i = periodiccnt >> 1; i--; )
1384 downheap (periodics, periodiccnt, i);
1385}
1386#endif
1387
1388#if EV_IDLE_ENABLE
1389void inline_size
1390idle_reify (EV_P)
1391{
1392 if (expect_false (idleall))
1393 {
1394 int pri;
1395
1396 for (pri = NUMPRI; pri--; )
989 { 1397 {
990 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1398 if (pendingcnt [pri])
1399 break;
991 1400
992 if (fabs (diff) >= 1e-4) 1401 if (idlecnt [pri])
993 { 1402 {
994 ev_periodic_stop (EV_A_ w); 1403 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
995 ev_periodic_start (EV_A_ w); 1404 break;
996
997 i = 0; /* restart loop, inefficient, but time jumps should be rare */
998 } 1405 }
999 } 1406 }
1000 } 1407 }
1001} 1408}
1409#endif
1002 1410
1003inline int 1411void inline_speed
1004time_update_monotonic (EV_P) 1412time_update (EV_P_ ev_tstamp max_block)
1005{
1006 mn_now = get_clock ();
1007
1008 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1009 {
1010 rt_now = rtmn_diff + mn_now;
1011 return 0;
1012 }
1013 else
1014 {
1015 now_floor = mn_now;
1016 rt_now = ev_time ();
1017 return 1;
1018 }
1019}
1020
1021static void
1022time_update (EV_P)
1023{ 1413{
1024 int i; 1414 int i;
1025 1415
1026#if EV_USE_MONOTONIC 1416#if EV_USE_MONOTONIC
1027 if (expect_true (have_monotonic)) 1417 if (expect_true (have_monotonic))
1028 { 1418 {
1029 if (time_update_monotonic (EV_A)) 1419 ev_tstamp odiff = rtmn_diff;
1420
1421 mn_now = get_clock ();
1422
1423 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1424 /* interpolate in the meantime */
1425 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1030 { 1426 {
1031 ev_tstamp odiff = rtmn_diff; 1427 ev_rt_now = rtmn_diff + mn_now;
1428 return;
1429 }
1032 1430
1431 now_floor = mn_now;
1432 ev_rt_now = ev_time ();
1433
1033 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1434 /* loop a few times, before making important decisions.
1435 * on the choice of "4": one iteration isn't enough,
1436 * in case we get preempted during the calls to
1437 * ev_time and get_clock. a second call is almost guaranteed
1438 * to succeed in that case, though. and looping a few more times
1439 * doesn't hurt either as we only do this on time-jumps or
1440 * in the unlikely event of having been preempted here.
1441 */
1442 for (i = 4; --i; )
1034 { 1443 {
1035 rtmn_diff = rt_now - mn_now; 1444 rtmn_diff = ev_rt_now - mn_now;
1036 1445
1037 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1446 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1038 return; /* all is well */ 1447 return; /* all is well */
1039 1448
1040 rt_now = ev_time (); 1449 ev_rt_now = ev_time ();
1041 mn_now = get_clock (); 1450 mn_now = get_clock ();
1042 now_floor = mn_now; 1451 now_floor = mn_now;
1043 } 1452 }
1044 1453
1454# if EV_PERIODIC_ENABLE
1455 periodics_reschedule (EV_A);
1456# endif
1457 /* no timer adjustment, as the monotonic clock doesn't jump */
1458 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1459 }
1460 else
1461#endif
1462 {
1463 ev_rt_now = ev_time ();
1464
1465 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1466 {
1467#if EV_PERIODIC_ENABLE
1045 periodics_reschedule (EV_A); 1468 periodics_reschedule (EV_A);
1046 /* no timer adjustment, as the monotonic clock doesn't jump */ 1469#endif
1047 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1470 /* adjust timers. this is easy, as the offset is the same for all of them */
1471 for (i = 0; i < timercnt; ++i)
1472 ((WT)timers [i])->at += ev_rt_now - mn_now;
1048 } 1473 }
1049 }
1050 else
1051#endif
1052 {
1053 rt_now = ev_time ();
1054 1474
1055 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1056 {
1057 periodics_reschedule (EV_A);
1058
1059 /* adjust timers. this is easy, as the offset is the same for all */
1060 for (i = 0; i < timercnt; ++i)
1061 ((WT)timers [i])->at += rt_now - mn_now;
1062 }
1063
1064 mn_now = rt_now; 1475 mn_now = ev_rt_now;
1065 } 1476 }
1066} 1477}
1067 1478
1068void 1479void
1069ev_ref (EV_P) 1480ev_ref (EV_P)
… …
1080static int loop_done; 1491static int loop_done;
1081 1492
1082void 1493void
1083ev_loop (EV_P_ int flags) 1494ev_loop (EV_P_ int flags)
1084{ 1495{
1085 double block;
1086 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1496 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1497 ? EVUNLOOP_ONE
1498 : EVUNLOOP_CANCEL;
1499
1500 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1087 1501
1088 do 1502 do
1089 { 1503 {
1504#ifndef _WIN32
1505 if (expect_false (curpid)) /* penalise the forking check even more */
1506 if (expect_false (getpid () != curpid))
1507 {
1508 curpid = getpid ();
1509 postfork = 1;
1510 }
1511#endif
1512
1513#if EV_FORK_ENABLE
1514 /* we might have forked, so queue fork handlers */
1515 if (expect_false (postfork))
1516 if (forkcnt)
1517 {
1518 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1519 call_pending (EV_A);
1520 }
1521#endif
1522
1090 /* queue check watchers (and execute them) */ 1523 /* queue prepare watchers (and execute them) */
1091 if (expect_false (preparecnt)) 1524 if (expect_false (preparecnt))
1092 { 1525 {
1093 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1526 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1094 call_pending (EV_A); 1527 call_pending (EV_A);
1095 } 1528 }
1096 1529
1530 if (expect_false (!activecnt))
1531 break;
1532
1097 /* we might have forked, so reify kernel state if necessary */ 1533 /* we might have forked, so reify kernel state if necessary */
1098 if (expect_false (postfork)) 1534 if (expect_false (postfork))
1099 loop_fork (EV_A); 1535 loop_fork (EV_A);
1100 1536
1101 /* update fd-related kernel structures */ 1537 /* update fd-related kernel structures */
1102 fd_reify (EV_A); 1538 fd_reify (EV_A);
1103 1539
1104 /* calculate blocking time */ 1540 /* calculate blocking time */
1541 {
1542 ev_tstamp waittime = 0.;
1543 ev_tstamp sleeptime = 0.;
1105 1544
1106 /* we only need this for !monotonic clock or timers, but as we basically 1545 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1107 always have timers, we just calculate it always */
1108#if EV_USE_MONOTONIC
1109 if (expect_true (have_monotonic))
1110 time_update_monotonic (EV_A);
1111 else
1112#endif
1113 { 1546 {
1114 rt_now = ev_time (); 1547 /* update time to cancel out callback processing overhead */
1115 mn_now = rt_now; 1548 time_update (EV_A_ 1e100);
1116 }
1117 1549
1118 if (flags & EVLOOP_NONBLOCK || idlecnt)
1119 block = 0.;
1120 else
1121 {
1122 block = MAX_BLOCKTIME; 1550 waittime = MAX_BLOCKTIME;
1123 1551
1124 if (timercnt) 1552 if (timercnt)
1125 { 1553 {
1126 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1554 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1127 if (block > to) block = to; 1555 if (waittime > to) waittime = to;
1128 } 1556 }
1129 1557
1558#if EV_PERIODIC_ENABLE
1130 if (periodiccnt) 1559 if (periodiccnt)
1131 { 1560 {
1132 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1561 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1133 if (block > to) block = to; 1562 if (waittime > to) waittime = to;
1134 } 1563 }
1564#endif
1135 1565
1136 if (block < 0.) block = 0.; 1566 if (expect_false (waittime < timeout_blocktime))
1567 waittime = timeout_blocktime;
1568
1569 sleeptime = waittime - backend_fudge;
1570
1571 if (expect_true (sleeptime > io_blocktime))
1572 sleeptime = io_blocktime;
1573
1574 if (sleeptime)
1575 {
1576 ev_sleep (sleeptime);
1577 waittime -= sleeptime;
1578 }
1137 } 1579 }
1138 1580
1139 method_poll (EV_A_ block); 1581 ++loop_count;
1582 backend_poll (EV_A_ waittime);
1140 1583
1141 /* update rt_now, do magic */ 1584 /* update ev_rt_now, do magic */
1142 time_update (EV_A); 1585 time_update (EV_A_ waittime + sleeptime);
1586 }
1143 1587
1144 /* queue pending timers and reschedule them */ 1588 /* queue pending timers and reschedule them */
1145 timers_reify (EV_A); /* relative timers called last */ 1589 timers_reify (EV_A); /* relative timers called last */
1590#if EV_PERIODIC_ENABLE
1146 periodics_reify (EV_A); /* absolute timers called first */ 1591 periodics_reify (EV_A); /* absolute timers called first */
1592#endif
1147 1593
1594#if EV_IDLE_ENABLE
1148 /* queue idle watchers unless io or timers are pending */ 1595 /* queue idle watchers unless other events are pending */
1149 if (idlecnt && !any_pending (EV_A)) 1596 idle_reify (EV_A);
1150 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1597#endif
1151 1598
1152 /* queue check watchers, to be executed first */ 1599 /* queue check watchers, to be executed first */
1153 if (checkcnt) 1600 if (expect_false (checkcnt))
1154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1601 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1155 1602
1156 call_pending (EV_A); 1603 call_pending (EV_A);
1604
1157 } 1605 }
1158 while (activecnt && !loop_done); 1606 while (expect_true (activecnt && !loop_done));
1159 1607
1160 if (loop_done != 2) 1608 if (loop_done == EVUNLOOP_ONE)
1161 loop_done = 0; 1609 loop_done = EVUNLOOP_CANCEL;
1162} 1610}
1163 1611
1164void 1612void
1165ev_unloop (EV_P_ int how) 1613ev_unloop (EV_P_ int how)
1166{ 1614{
1167 loop_done = how; 1615 loop_done = how;
1168} 1616}
1169 1617
1170/*****************************************************************************/ 1618/*****************************************************************************/
1171 1619
1172inline void 1620void inline_size
1173wlist_add (WL *head, WL elem) 1621wlist_add (WL *head, WL elem)
1174{ 1622{
1175 elem->next = *head; 1623 elem->next = *head;
1176 *head = elem; 1624 *head = elem;
1177} 1625}
1178 1626
1179inline void 1627void inline_size
1180wlist_del (WL *head, WL elem) 1628wlist_del (WL *head, WL elem)
1181{ 1629{
1182 while (*head) 1630 while (*head)
1183 { 1631 {
1184 if (*head == elem) 1632 if (*head == elem)
… …
1189 1637
1190 head = &(*head)->next; 1638 head = &(*head)->next;
1191 } 1639 }
1192} 1640}
1193 1641
1194inline void 1642void inline_speed
1195ev_clear_pending (EV_P_ W w) 1643clear_pending (EV_P_ W w)
1196{ 1644{
1197 if (w->pending) 1645 if (w->pending)
1198 { 1646 {
1199 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1647 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1200 w->pending = 0; 1648 w->pending = 0;
1201 } 1649 }
1202} 1650}
1203 1651
1204inline void 1652int
1653ev_clear_pending (EV_P_ void *w)
1654{
1655 W w_ = (W)w;
1656 int pending = w_->pending;
1657
1658 if (expect_true (pending))
1659 {
1660 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1661 w_->pending = 0;
1662 p->w = 0;
1663 return p->events;
1664 }
1665 else
1666 return 0;
1667}
1668
1669void inline_size
1670pri_adjust (EV_P_ W w)
1671{
1672 int pri = w->priority;
1673 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1674 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1675 w->priority = pri;
1676}
1677
1678void inline_speed
1205ev_start (EV_P_ W w, int active) 1679ev_start (EV_P_ W w, int active)
1206{ 1680{
1207 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1681 pri_adjust (EV_A_ w);
1208 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1209
1210 w->active = active; 1682 w->active = active;
1211 ev_ref (EV_A); 1683 ev_ref (EV_A);
1212} 1684}
1213 1685
1214inline void 1686void inline_size
1215ev_stop (EV_P_ W w) 1687ev_stop (EV_P_ W w)
1216{ 1688{
1217 ev_unref (EV_A); 1689 ev_unref (EV_A);
1218 w->active = 0; 1690 w->active = 0;
1219} 1691}
1220 1692
1221/*****************************************************************************/ 1693/*****************************************************************************/
1222 1694
1223void 1695void noinline
1224ev_io_start (EV_P_ struct ev_io *w) 1696ev_io_start (EV_P_ ev_io *w)
1225{ 1697{
1226 int fd = w->fd; 1698 int fd = w->fd;
1227 1699
1228 if (ev_is_active (w)) 1700 if (expect_false (ev_is_active (w)))
1229 return; 1701 return;
1230 1702
1231 assert (("ev_io_start called with negative fd", fd >= 0)); 1703 assert (("ev_io_start called with negative fd", fd >= 0));
1232 1704
1233 ev_start (EV_A_ (W)w, 1); 1705 ev_start (EV_A_ (W)w, 1);
1234 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1706 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1235 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1707 wlist_add (&anfds[fd].head, (WL)w);
1236 1708
1237 fd_change (EV_A_ fd); 1709 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1710 w->events &= ~EV_IOFDSET;
1238} 1711}
1239 1712
1240void 1713void noinline
1241ev_io_stop (EV_P_ struct ev_io *w) 1714ev_io_stop (EV_P_ ev_io *w)
1242{ 1715{
1243 ev_clear_pending (EV_A_ (W)w); 1716 clear_pending (EV_A_ (W)w);
1244 if (!ev_is_active (w)) 1717 if (expect_false (!ev_is_active (w)))
1245 return; 1718 return;
1246 1719
1720 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1721
1247 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1722 wlist_del (&anfds[w->fd].head, (WL)w);
1248 ev_stop (EV_A_ (W)w); 1723 ev_stop (EV_A_ (W)w);
1249 1724
1250 fd_change (EV_A_ w->fd); 1725 fd_change (EV_A_ w->fd, 1);
1251} 1726}
1252 1727
1253void 1728void noinline
1254ev_timer_start (EV_P_ struct ev_timer *w) 1729ev_timer_start (EV_P_ ev_timer *w)
1255{ 1730{
1256 if (ev_is_active (w)) 1731 if (expect_false (ev_is_active (w)))
1257 return; 1732 return;
1258 1733
1259 ((WT)w)->at += mn_now; 1734 ((WT)w)->at += mn_now;
1260 1735
1261 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1736 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1262 1737
1263 ev_start (EV_A_ (W)w, ++timercnt); 1738 ev_start (EV_A_ (W)w, ++timercnt);
1264 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1739 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1265 timers [timercnt - 1] = w; 1740 timers [timercnt - 1] = (WT)w;
1266 upheap ((WT *)timers, timercnt - 1); 1741 upheap (timers, timercnt - 1);
1267 1742
1268 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1743 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1269} 1744}
1270 1745
1271void 1746void noinline
1272ev_timer_stop (EV_P_ struct ev_timer *w) 1747ev_timer_stop (EV_P_ ev_timer *w)
1273{ 1748{
1274 ev_clear_pending (EV_A_ (W)w); 1749 clear_pending (EV_A_ (W)w);
1275 if (!ev_is_active (w)) 1750 if (expect_false (!ev_is_active (w)))
1276 return; 1751 return;
1277 1752
1278 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1753 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1279 1754
1280 if (((W)w)->active < timercnt--) 1755 {
1756 int active = ((W)w)->active;
1757
1758 if (expect_true (--active < --timercnt))
1281 { 1759 {
1282 timers [((W)w)->active - 1] = timers [timercnt]; 1760 timers [active] = timers [timercnt];
1283 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1761 adjustheap (timers, timercnt, active);
1284 } 1762 }
1763 }
1285 1764
1286 ((WT)w)->at = w->repeat; 1765 ((WT)w)->at -= mn_now;
1287 1766
1288 ev_stop (EV_A_ (W)w); 1767 ev_stop (EV_A_ (W)w);
1289} 1768}
1290 1769
1291void 1770void noinline
1292ev_timer_again (EV_P_ struct ev_timer *w) 1771ev_timer_again (EV_P_ ev_timer *w)
1293{ 1772{
1294 if (ev_is_active (w)) 1773 if (ev_is_active (w))
1295 { 1774 {
1296 if (w->repeat) 1775 if (w->repeat)
1297 { 1776 {
1298 ((WT)w)->at = mn_now + w->repeat; 1777 ((WT)w)->at = mn_now + w->repeat;
1299 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1778 adjustheap (timers, timercnt, ((W)w)->active - 1);
1300 } 1779 }
1301 else 1780 else
1302 ev_timer_stop (EV_A_ w); 1781 ev_timer_stop (EV_A_ w);
1303 } 1782 }
1304 else if (w->repeat) 1783 else if (w->repeat)
1784 {
1785 w->at = w->repeat;
1305 ev_timer_start (EV_A_ w); 1786 ev_timer_start (EV_A_ w);
1787 }
1306} 1788}
1307 1789
1308void 1790#if EV_PERIODIC_ENABLE
1791void noinline
1309ev_periodic_start (EV_P_ struct ev_periodic *w) 1792ev_periodic_start (EV_P_ ev_periodic *w)
1310{ 1793{
1311 if (ev_is_active (w)) 1794 if (expect_false (ev_is_active (w)))
1312 return; 1795 return;
1313 1796
1797 if (w->reschedule_cb)
1798 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1799 else if (w->interval)
1800 {
1314 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1801 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1315
1316 /* this formula differs from the one in periodic_reify because we do not always round up */ 1802 /* this formula differs from the one in periodic_reify because we do not always round up */
1317 if (w->interval)
1318 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1803 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1804 }
1805 else
1806 ((WT)w)->at = w->offset;
1319 1807
1320 ev_start (EV_A_ (W)w, ++periodiccnt); 1808 ev_start (EV_A_ (W)w, ++periodiccnt);
1321 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1809 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1322 periodics [periodiccnt - 1] = w; 1810 periodics [periodiccnt - 1] = (WT)w;
1323 upheap ((WT *)periodics, periodiccnt - 1); 1811 upheap (periodics, periodiccnt - 1);
1324 1812
1325 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1813 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1326} 1814}
1327 1815
1328void 1816void noinline
1329ev_periodic_stop (EV_P_ struct ev_periodic *w) 1817ev_periodic_stop (EV_P_ ev_periodic *w)
1330{ 1818{
1331 ev_clear_pending (EV_A_ (W)w); 1819 clear_pending (EV_A_ (W)w);
1332 if (!ev_is_active (w)) 1820 if (expect_false (!ev_is_active (w)))
1333 return; 1821 return;
1334 1822
1335 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1823 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1336 1824
1337 if (((W)w)->active < periodiccnt--) 1825 {
1826 int active = ((W)w)->active;
1827
1828 if (expect_true (--active < --periodiccnt))
1338 { 1829 {
1339 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1830 periodics [active] = periodics [periodiccnt];
1340 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1831 adjustheap (periodics, periodiccnt, active);
1341 } 1832 }
1833 }
1342 1834
1343 ev_stop (EV_A_ (W)w); 1835 ev_stop (EV_A_ (W)w);
1344} 1836}
1345 1837
1346void 1838void noinline
1347ev_idle_start (EV_P_ struct ev_idle *w) 1839ev_periodic_again (EV_P_ ev_periodic *w)
1348{ 1840{
1349 if (ev_is_active (w)) 1841 /* TODO: use adjustheap and recalculation */
1350 return;
1351
1352 ev_start (EV_A_ (W)w, ++idlecnt);
1353 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1354 idles [idlecnt - 1] = w;
1355}
1356
1357void
1358ev_idle_stop (EV_P_ struct ev_idle *w)
1359{
1360 ev_clear_pending (EV_A_ (W)w);
1361 if (ev_is_active (w))
1362 return;
1363
1364 idles [((W)w)->active - 1] = idles [--idlecnt];
1365 ev_stop (EV_A_ (W)w); 1842 ev_periodic_stop (EV_A_ w);
1843 ev_periodic_start (EV_A_ w);
1366} 1844}
1367 1845#endif
1368void
1369ev_prepare_start (EV_P_ struct ev_prepare *w)
1370{
1371 if (ev_is_active (w))
1372 return;
1373
1374 ev_start (EV_A_ (W)w, ++preparecnt);
1375 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1376 prepares [preparecnt - 1] = w;
1377}
1378
1379void
1380ev_prepare_stop (EV_P_ struct ev_prepare *w)
1381{
1382 ev_clear_pending (EV_A_ (W)w);
1383 if (ev_is_active (w))
1384 return;
1385
1386 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1387 ev_stop (EV_A_ (W)w);
1388}
1389
1390void
1391ev_check_start (EV_P_ struct ev_check *w)
1392{
1393 if (ev_is_active (w))
1394 return;
1395
1396 ev_start (EV_A_ (W)w, ++checkcnt);
1397 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1398 checks [checkcnt - 1] = w;
1399}
1400
1401void
1402ev_check_stop (EV_P_ struct ev_check *w)
1403{
1404 ev_clear_pending (EV_A_ (W)w);
1405 if (ev_is_active (w))
1406 return;
1407
1408 checks [((W)w)->active - 1] = checks [--checkcnt];
1409 ev_stop (EV_A_ (W)w);
1410}
1411 1846
1412#ifndef SA_RESTART 1847#ifndef SA_RESTART
1413# define SA_RESTART 0 1848# define SA_RESTART 0
1414#endif 1849#endif
1415 1850
1416void 1851void noinline
1417ev_signal_start (EV_P_ struct ev_signal *w) 1852ev_signal_start (EV_P_ ev_signal *w)
1418{ 1853{
1419#if EV_MULTIPLICITY 1854#if EV_MULTIPLICITY
1420 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1855 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1421#endif 1856#endif
1422 if (ev_is_active (w)) 1857 if (expect_false (ev_is_active (w)))
1423 return; 1858 return;
1424 1859
1425 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1860 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1426 1861
1862 {
1863#ifndef _WIN32
1864 sigset_t full, prev;
1865 sigfillset (&full);
1866 sigprocmask (SIG_SETMASK, &full, &prev);
1867#endif
1868
1869 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1870
1871#ifndef _WIN32
1872 sigprocmask (SIG_SETMASK, &prev, 0);
1873#endif
1874 }
1875
1427 ev_start (EV_A_ (W)w, 1); 1876 ev_start (EV_A_ (W)w, 1);
1428 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1429 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1877 wlist_add (&signals [w->signum - 1].head, (WL)w);
1430 1878
1431 if (!((WL)w)->next) 1879 if (!((WL)w)->next)
1432 { 1880 {
1433#if WIN32 1881#if _WIN32
1434 signal (w->signum, sighandler); 1882 signal (w->signum, sighandler);
1435#else 1883#else
1436 struct sigaction sa; 1884 struct sigaction sa;
1437 sa.sa_handler = sighandler; 1885 sa.sa_handler = sighandler;
1438 sigfillset (&sa.sa_mask); 1886 sigfillset (&sa.sa_mask);
… …
1440 sigaction (w->signum, &sa, 0); 1888 sigaction (w->signum, &sa, 0);
1441#endif 1889#endif
1442 } 1890 }
1443} 1891}
1444 1892
1445void 1893void noinline
1446ev_signal_stop (EV_P_ struct ev_signal *w) 1894ev_signal_stop (EV_P_ ev_signal *w)
1447{ 1895{
1448 ev_clear_pending (EV_A_ (W)w); 1896 clear_pending (EV_A_ (W)w);
1449 if (!ev_is_active (w)) 1897 if (expect_false (!ev_is_active (w)))
1450 return; 1898 return;
1451 1899
1452 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1900 wlist_del (&signals [w->signum - 1].head, (WL)w);
1453 ev_stop (EV_A_ (W)w); 1901 ev_stop (EV_A_ (W)w);
1454 1902
1455 if (!signals [w->signum - 1].head) 1903 if (!signals [w->signum - 1].head)
1456 signal (w->signum, SIG_DFL); 1904 signal (w->signum, SIG_DFL);
1457} 1905}
1458 1906
1459void 1907void
1460ev_child_start (EV_P_ struct ev_child *w) 1908ev_child_start (EV_P_ ev_child *w)
1461{ 1909{
1462#if EV_MULTIPLICITY 1910#if EV_MULTIPLICITY
1463 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1911 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1464#endif 1912#endif
1465 if (ev_is_active (w)) 1913 if (expect_false (ev_is_active (w)))
1466 return; 1914 return;
1467 1915
1468 ev_start (EV_A_ (W)w, 1); 1916 ev_start (EV_A_ (W)w, 1);
1469 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1917 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1470} 1918}
1471 1919
1472void 1920void
1473ev_child_stop (EV_P_ struct ev_child *w) 1921ev_child_stop (EV_P_ ev_child *w)
1474{ 1922{
1475 ev_clear_pending (EV_A_ (W)w); 1923 clear_pending (EV_A_ (W)w);
1476 if (ev_is_active (w)) 1924 if (expect_false (!ev_is_active (w)))
1477 return; 1925 return;
1478 1926
1479 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1927 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1480 ev_stop (EV_A_ (W)w); 1928 ev_stop (EV_A_ (W)w);
1481} 1929}
1482 1930
1931#if EV_STAT_ENABLE
1932
1933# ifdef _WIN32
1934# undef lstat
1935# define lstat(a,b) _stati64 (a,b)
1936# endif
1937
1938#define DEF_STAT_INTERVAL 5.0074891
1939#define MIN_STAT_INTERVAL 0.1074891
1940
1941static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1942
1943#if EV_USE_INOTIFY
1944# define EV_INOTIFY_BUFSIZE 8192
1945
1946static void noinline
1947infy_add (EV_P_ ev_stat *w)
1948{
1949 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);
1950
1951 if (w->wd < 0)
1952 {
1953 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1954
1955 /* monitor some parent directory for speedup hints */
1956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1957 {
1958 char path [4096];
1959 strcpy (path, w->path);
1960
1961 do
1962 {
1963 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1964 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1965
1966 char *pend = strrchr (path, '/');
1967
1968 if (!pend)
1969 break; /* whoops, no '/', complain to your admin */
1970
1971 *pend = 0;
1972 w->wd = inotify_add_watch (fs_fd, path, mask);
1973 }
1974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1975 }
1976 }
1977 else
1978 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1979
1980 if (w->wd >= 0)
1981 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1982}
1983
1984static void noinline
1985infy_del (EV_P_ ev_stat *w)
1986{
1987 int slot;
1988 int wd = w->wd;
1989
1990 if (wd < 0)
1991 return;
1992
1993 w->wd = -2;
1994 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1995 wlist_del (&fs_hash [slot].head, (WL)w);
1996
1997 /* remove this watcher, if others are watching it, they will rearm */
1998 inotify_rm_watch (fs_fd, wd);
1999}
2000
2001static void noinline
2002infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2003{
2004 if (slot < 0)
2005 /* overflow, need to check for all hahs slots */
2006 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2007 infy_wd (EV_A_ slot, wd, ev);
2008 else
2009 {
2010 WL w_;
2011
2012 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2013 {
2014 ev_stat *w = (ev_stat *)w_;
2015 w_ = w_->next; /* lets us remove this watcher and all before it */
2016
2017 if (w->wd == wd || wd == -1)
2018 {
2019 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2020 {
2021 w->wd = -1;
2022 infy_add (EV_A_ w); /* re-add, no matter what */
2023 }
2024
2025 stat_timer_cb (EV_A_ &w->timer, 0);
2026 }
2027 }
2028 }
2029}
2030
2031static void
2032infy_cb (EV_P_ ev_io *w, int revents)
2033{
2034 char buf [EV_INOTIFY_BUFSIZE];
2035 struct inotify_event *ev = (struct inotify_event *)buf;
2036 int ofs;
2037 int len = read (fs_fd, buf, sizeof (buf));
2038
2039 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2040 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2041}
2042
2043void inline_size
2044infy_init (EV_P)
2045{
2046 if (fs_fd != -2)
2047 return;
2048
2049 fs_fd = inotify_init ();
2050
2051 if (fs_fd >= 0)
2052 {
2053 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2054 ev_set_priority (&fs_w, EV_MAXPRI);
2055 ev_io_start (EV_A_ &fs_w);
2056 }
2057}
2058
2059void inline_size
2060infy_fork (EV_P)
2061{
2062 int slot;
2063
2064 if (fs_fd < 0)
2065 return;
2066
2067 close (fs_fd);
2068 fs_fd = inotify_init ();
2069
2070 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2071 {
2072 WL w_ = fs_hash [slot].head;
2073 fs_hash [slot].head = 0;
2074
2075 while (w_)
2076 {
2077 ev_stat *w = (ev_stat *)w_;
2078 w_ = w_->next; /* lets us add this watcher */
2079
2080 w->wd = -1;
2081
2082 if (fs_fd >= 0)
2083 infy_add (EV_A_ w); /* re-add, no matter what */
2084 else
2085 ev_timer_start (EV_A_ &w->timer);
2086 }
2087
2088 }
2089}
2090
2091#endif
2092
2093void
2094ev_stat_stat (EV_P_ ev_stat *w)
2095{
2096 if (lstat (w->path, &w->attr) < 0)
2097 w->attr.st_nlink = 0;
2098 else if (!w->attr.st_nlink)
2099 w->attr.st_nlink = 1;
2100}
2101
2102static void noinline
2103stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2104{
2105 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2106
2107 /* we copy this here each the time so that */
2108 /* prev has the old value when the callback gets invoked */
2109 w->prev = w->attr;
2110 ev_stat_stat (EV_A_ w);
2111
2112 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2113 if (
2114 w->prev.st_dev != w->attr.st_dev
2115 || w->prev.st_ino != w->attr.st_ino
2116 || w->prev.st_mode != w->attr.st_mode
2117 || w->prev.st_nlink != w->attr.st_nlink
2118 || w->prev.st_uid != w->attr.st_uid
2119 || w->prev.st_gid != w->attr.st_gid
2120 || w->prev.st_rdev != w->attr.st_rdev
2121 || w->prev.st_size != w->attr.st_size
2122 || w->prev.st_atime != w->attr.st_atime
2123 || w->prev.st_mtime != w->attr.st_mtime
2124 || w->prev.st_ctime != w->attr.st_ctime
2125 ) {
2126 #if EV_USE_INOTIFY
2127 infy_del (EV_A_ w);
2128 infy_add (EV_A_ w);
2129 ev_stat_stat (EV_A_ w); /* avoid race... */
2130 #endif
2131
2132 ev_feed_event (EV_A_ w, EV_STAT);
2133 }
2134}
2135
2136void
2137ev_stat_start (EV_P_ ev_stat *w)
2138{
2139 if (expect_false (ev_is_active (w)))
2140 return;
2141
2142 /* since we use memcmp, we need to clear any padding data etc. */
2143 memset (&w->prev, 0, sizeof (ev_statdata));
2144 memset (&w->attr, 0, sizeof (ev_statdata));
2145
2146 ev_stat_stat (EV_A_ w);
2147
2148 if (w->interval < MIN_STAT_INTERVAL)
2149 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2150
2151 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2152 ev_set_priority (&w->timer, ev_priority (w));
2153
2154#if EV_USE_INOTIFY
2155 infy_init (EV_A);
2156
2157 if (fs_fd >= 0)
2158 infy_add (EV_A_ w);
2159 else
2160#endif
2161 ev_timer_start (EV_A_ &w->timer);
2162
2163 ev_start (EV_A_ (W)w, 1);
2164}
2165
2166void
2167ev_stat_stop (EV_P_ ev_stat *w)
2168{
2169 clear_pending (EV_A_ (W)w);
2170 if (expect_false (!ev_is_active (w)))
2171 return;
2172
2173#if EV_USE_INOTIFY
2174 infy_del (EV_A_ w);
2175#endif
2176 ev_timer_stop (EV_A_ &w->timer);
2177
2178 ev_stop (EV_A_ (W)w);
2179}
2180#endif
2181
2182#if EV_IDLE_ENABLE
2183void
2184ev_idle_start (EV_P_ ev_idle *w)
2185{
2186 if (expect_false (ev_is_active (w)))
2187 return;
2188
2189 pri_adjust (EV_A_ (W)w);
2190
2191 {
2192 int active = ++idlecnt [ABSPRI (w)];
2193
2194 ++idleall;
2195 ev_start (EV_A_ (W)w, active);
2196
2197 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2198 idles [ABSPRI (w)][active - 1] = w;
2199 }
2200}
2201
2202void
2203ev_idle_stop (EV_P_ ev_idle *w)
2204{
2205 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w)))
2207 return;
2208
2209 {
2210 int active = ((W)w)->active;
2211
2212 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2213 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2214
2215 ev_stop (EV_A_ (W)w);
2216 --idleall;
2217 }
2218}
2219#endif
2220
2221void
2222ev_prepare_start (EV_P_ ev_prepare *w)
2223{
2224 if (expect_false (ev_is_active (w)))
2225 return;
2226
2227 ev_start (EV_A_ (W)w, ++preparecnt);
2228 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2229 prepares [preparecnt - 1] = w;
2230}
2231
2232void
2233ev_prepare_stop (EV_P_ ev_prepare *w)
2234{
2235 clear_pending (EV_A_ (W)w);
2236 if (expect_false (!ev_is_active (w)))
2237 return;
2238
2239 {
2240 int active = ((W)w)->active;
2241 prepares [active - 1] = prepares [--preparecnt];
2242 ((W)prepares [active - 1])->active = active;
2243 }
2244
2245 ev_stop (EV_A_ (W)w);
2246}
2247
2248void
2249ev_check_start (EV_P_ ev_check *w)
2250{
2251 if (expect_false (ev_is_active (w)))
2252 return;
2253
2254 ev_start (EV_A_ (W)w, ++checkcnt);
2255 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2256 checks [checkcnt - 1] = w;
2257}
2258
2259void
2260ev_check_stop (EV_P_ ev_check *w)
2261{
2262 clear_pending (EV_A_ (W)w);
2263 if (expect_false (!ev_is_active (w)))
2264 return;
2265
2266 {
2267 int active = ((W)w)->active;
2268 checks [active - 1] = checks [--checkcnt];
2269 ((W)checks [active - 1])->active = active;
2270 }
2271
2272 ev_stop (EV_A_ (W)w);
2273}
2274
2275#if EV_EMBED_ENABLE
2276void noinline
2277ev_embed_sweep (EV_P_ ev_embed *w)
2278{
2279 ev_loop (w->other, EVLOOP_NONBLOCK);
2280}
2281
2282static void
2283embed_io_cb (EV_P_ ev_io *io, int revents)
2284{
2285 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2286
2287 if (ev_cb (w))
2288 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2289 else
2290 ev_loop (w->other, EVLOOP_NONBLOCK);
2291}
2292
2293static void
2294embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2295{
2296 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2297
2298 {
2299 struct ev_loop *loop = w->other;
2300
2301 while (fdchangecnt)
2302 {
2303 fd_reify (EV_A);
2304 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2305 }
2306 }
2307}
2308
2309#if 0
2310static void
2311embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2312{
2313 ev_idle_stop (EV_A_ idle);
2314}
2315#endif
2316
2317void
2318ev_embed_start (EV_P_ ev_embed *w)
2319{
2320 if (expect_false (ev_is_active (w)))
2321 return;
2322
2323 {
2324 struct ev_loop *loop = w->other;
2325 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2326 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2327 }
2328
2329 ev_set_priority (&w->io, ev_priority (w));
2330 ev_io_start (EV_A_ &w->io);
2331
2332 ev_prepare_init (&w->prepare, embed_prepare_cb);
2333 ev_set_priority (&w->prepare, EV_MINPRI);
2334 ev_prepare_start (EV_A_ &w->prepare);
2335
2336 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2337
2338 ev_start (EV_A_ (W)w, 1);
2339}
2340
2341void
2342ev_embed_stop (EV_P_ ev_embed *w)
2343{
2344 clear_pending (EV_A_ (W)w);
2345 if (expect_false (!ev_is_active (w)))
2346 return;
2347
2348 ev_io_stop (EV_A_ &w->io);
2349 ev_prepare_stop (EV_A_ &w->prepare);
2350
2351 ev_stop (EV_A_ (W)w);
2352}
2353#endif
2354
2355#if EV_FORK_ENABLE
2356void
2357ev_fork_start (EV_P_ ev_fork *w)
2358{
2359 if (expect_false (ev_is_active (w)))
2360 return;
2361
2362 ev_start (EV_A_ (W)w, ++forkcnt);
2363 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2364 forks [forkcnt - 1] = w;
2365}
2366
2367void
2368ev_fork_stop (EV_P_ ev_fork *w)
2369{
2370 clear_pending (EV_A_ (W)w);
2371 if (expect_false (!ev_is_active (w)))
2372 return;
2373
2374 {
2375 int active = ((W)w)->active;
2376 forks [active - 1] = forks [--forkcnt];
2377 ((W)forks [active - 1])->active = active;
2378 }
2379
2380 ev_stop (EV_A_ (W)w);
2381}
2382#endif
2383
1483/*****************************************************************************/ 2384/*****************************************************************************/
1484 2385
1485struct ev_once 2386struct ev_once
1486{ 2387{
1487 struct ev_io io; 2388 ev_io io;
1488 struct ev_timer to; 2389 ev_timer to;
1489 void (*cb)(int revents, void *arg); 2390 void (*cb)(int revents, void *arg);
1490 void *arg; 2391 void *arg;
1491}; 2392};
1492 2393
1493static void 2394static void
… …
1502 2403
1503 cb (revents, arg); 2404 cb (revents, arg);
1504} 2405}
1505 2406
1506static void 2407static void
1507once_cb_io (EV_P_ struct ev_io *w, int revents) 2408once_cb_io (EV_P_ ev_io *w, int revents)
1508{ 2409{
1509 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2410 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1510} 2411}
1511 2412
1512static void 2413static void
1513once_cb_to (EV_P_ struct ev_timer *w, int revents) 2414once_cb_to (EV_P_ ev_timer *w, int revents)
1514{ 2415{
1515 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2416 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1516} 2417}
1517 2418
1518void 2419void
1519ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1520{ 2421{
1521 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1522 2423
1523 if (!once) 2424 if (expect_false (!once))
2425 {
1524 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1525 else 2427 return;
1526 { 2428 }
2429
1527 once->cb = cb; 2430 once->cb = cb;
1528 once->arg = arg; 2431 once->arg = arg;
1529 2432
1530 ev_watcher_init (&once->io, once_cb_io); 2433 ev_init (&once->io, once_cb_io);
1531 if (fd >= 0) 2434 if (fd >= 0)
1532 { 2435 {
1533 ev_io_set (&once->io, fd, events); 2436 ev_io_set (&once->io, fd, events);
1534 ev_io_start (EV_A_ &once->io); 2437 ev_io_start (EV_A_ &once->io);
1535 } 2438 }
1536 2439
1537 ev_watcher_init (&once->to, once_cb_to); 2440 ev_init (&once->to, once_cb_to);
1538 if (timeout >= 0.) 2441 if (timeout >= 0.)
1539 { 2442 {
1540 ev_timer_set (&once->to, timeout, 0.); 2443 ev_timer_set (&once->to, timeout, 0.);
1541 ev_timer_start (EV_A_ &once->to); 2444 ev_timer_start (EV_A_ &once->to);
1542 }
1543 } 2445 }
1544} 2446}
1545 2447
2448#if EV_MULTIPLICITY
2449 #include "ev_wrap.h"
2450#endif
2451
2452#ifdef __cplusplus
2453}
2454#endif
2455

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