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Comparing libev/ev.c (file contents):
Revision 1.77 by root, Thu Nov 8 00:44:17 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
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 EV_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;
504} 754}
505 755
756void inline_size
757adjustheap (WT *heap, int N, int k)
758{
759 upheap (heap, k);
760 downheap (heap, N, k);
761}
762
506/*****************************************************************************/ 763/*****************************************************************************/
507 764
508typedef struct 765typedef struct
509{ 766{
510 WL head; 767 WL head;
511 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
512} ANSIG; 769} ANSIG;
513 770
514static ANSIG *signals; 771static ANSIG *signals;
515static int signalmax; 772static int signalmax;
516 773
517static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
518static sig_atomic_t volatile gotsig;
519static struct ev_io sigev;
520 775
521static void 776void inline_size
522signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
523{ 778{
524 while (count--) 779 while (count--)
525 { 780 {
526 base->head = 0; 781 base->head = 0;
… …
528 783
529 ++base; 784 ++base;
530 } 785 }
531} 786}
532 787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd)
792{
793#ifdef _WIN32
794 int arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif
800}
801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
852 if (gotasync)
853 {
854 int i;
855 gotasync = 0;
856
857 for (i = asynccnt; i--; )
858 if (asyncs [i]->sent)
859 {
860 asyncs [i]->sent = 0;
861 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862 }
863 }
864}
865
866/*****************************************************************************/
867
533static void 868static void
534sighandler (int signum) 869sighandler (int signum)
535{ 870{
871#if EV_MULTIPLICITY
872 struct ev_loop *loop = &default_loop_struct;
873#endif
874
536#if WIN32 875#if _WIN32
537 signal (signum, sighandler); 876 signal (signum, sighandler);
538#endif 877#endif
539 878
540 signals [signum - 1].gotsig = 1; 879 signals [signum - 1].gotsig = 1;
541 880 evpipe_write (EV_A_ 1, 0);
542 if (!gotsig)
543 {
544 int old_errno = errno;
545 gotsig = 1;
546#ifdef WIN32
547 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548#else
549 write (sigpipe [1], &signum, 1);
550#endif
551 errno = old_errno;
552 }
553} 881}
554 882
555static void 883void noinline
556sigcb (EV_P_ struct ev_io *iow, int revents) 884ev_feed_signal_event (EV_P_ int signum)
557{ 885{
558 WL w; 886 WL w;
887
888#if EV_MULTIPLICITY
889 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
890#endif
891
559 int signum; 892 --signum;
560 893
561#ifdef WIN32 894 if (signum < 0 || signum >= signalmax)
562 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); 895 return;
563#else
564 read (sigpipe [0], &revents, 1);
565#endif
566 gotsig = 0;
567 896
568 for (signum = signalmax; signum--; )
569 if (signals [signum].gotsig)
570 {
571 signals [signum].gotsig = 0; 897 signals [signum].gotsig = 0;
572 898
573 for (w = signals [signum].head; w; w = w->next) 899 for (w = signals [signum].head; w; w = w->next)
574 event (EV_A_ (W)w, EV_SIGNAL); 900 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
575 }
576}
577
578static void
579siginit (EV_P)
580{
581#ifndef WIN32
582 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
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
590 ev_io_set (&sigev, sigpipe [0], EV_READ);
591 ev_io_start (EV_A_ &sigev);
592 ev_unref (EV_A); /* child watcher should not keep loop alive */
593} 901}
594 902
595/*****************************************************************************/ 903/*****************************************************************************/
596 904
597static struct ev_child *childs [PID_HASHSIZE]; 905static WL childs [EV_PID_HASHSIZE];
598 906
599#ifndef WIN32 907#ifndef _WIN32
600 908
601static struct ev_signal childev; 909static ev_signal childev;
910
911#ifndef WIFCONTINUED
912# define WIFCONTINUED(status) 0
913#endif
914
915void inline_speed
916child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
917{
918 ev_child *w;
919 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
920
921 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
922 {
923 if ((w->pid == pid || !w->pid)
924 && (!traced || (w->flags & 1)))
925 {
926 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
927 w->rpid = pid;
928 w->rstatus = status;
929 ev_feed_event (EV_A_ (W)w, EV_CHILD);
930 }
931 }
932}
602 933
603#ifndef WCONTINUED 934#ifndef WCONTINUED
604# define WCONTINUED 0 935# define WCONTINUED 0
605#endif 936#endif
606 937
607static void 938static 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) 939childcb (EV_P_ ev_signal *sw, int revents)
624{ 940{
625 int pid, status; 941 int pid, status;
626 942
943 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
627 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 944 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
628 { 945 if (!WCONTINUED
946 || errno != EINVAL
947 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
948 return;
949
629 /* make sure we are called again until all childs have been reaped */ 950 /* make sure we are called again until all childs have been reaped */
951 /* we need to do it this way so that the callback gets called before we continue */
630 event (EV_A_ (W)sw, EV_SIGNAL); 952 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631 953
632 child_reap (EV_A_ sw, pid, pid, status); 954 child_reap (EV_A_ sw, pid, pid, status);
955 if (EV_PID_HASHSIZE > 1)
633 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 956 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
634 }
635} 957}
636 958
637#endif 959#endif
638 960
639/*****************************************************************************/ 961/*****************************************************************************/
640 962
963#if EV_USE_PORT
964# include "ev_port.c"
965#endif
641#if EV_USE_KQUEUE 966#if EV_USE_KQUEUE
642# include "ev_kqueue.c" 967# include "ev_kqueue.c"
643#endif 968#endif
644#if EV_USE_EPOLL 969#if EV_USE_EPOLL
645# include "ev_epoll.c" 970# include "ev_epoll.c"
… …
662{ 987{
663 return EV_VERSION_MINOR; 988 return EV_VERSION_MINOR;
664} 989}
665 990
666/* return true if we are running with elevated privileges and should ignore env variables */ 991/* return true if we are running with elevated privileges and should ignore env variables */
667static int 992int inline_size
668enable_secure (void) 993enable_secure (void)
669{ 994{
670#ifdef WIN32 995#ifdef _WIN32
671 return 0; 996 return 0;
672#else 997#else
673 return getuid () != geteuid () 998 return getuid () != geteuid ()
674 || getgid () != getegid (); 999 || getgid () != getegid ();
675#endif 1000#endif
676} 1001}
677 1002
678int 1003unsigned int
679ev_method (EV_P) 1004ev_supported_backends (void)
680{ 1005{
681 return method; 1006 unsigned int flags = 0;
682}
683 1007
684static void 1008 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
685loop_init (EV_P_ int methods) 1009 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1010 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1012 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1013
1014 return flags;
1015}
1016
1017unsigned int
1018ev_recommended_backends (void)
686{ 1019{
687 if (!method) 1020 unsigned int flags = ev_supported_backends ();
1021
1022#ifndef __NetBSD__
1023 /* kqueue is borked on everything but netbsd apparently */
1024 /* it usually doesn't work correctly on anything but sockets and pipes */
1025 flags &= ~EVBACKEND_KQUEUE;
1026#endif
1027#ifdef __APPLE__
1028 // flags &= ~EVBACKEND_KQUEUE; for documentation
1029 flags &= ~EVBACKEND_POLL;
1030#endif
1031
1032 return flags;
1033}
1034
1035unsigned int
1036ev_embeddable_backends (void)
1037{
1038 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1039
1040 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1041 /* please fix it and tell me how to detect the fix */
1042 flags &= ~EVBACKEND_EPOLL;
1043
1044 return flags;
1045}
1046
1047unsigned int
1048ev_backend (EV_P)
1049{
1050 return backend;
1051}
1052
1053unsigned int
1054ev_loop_count (EV_P)
1055{
1056 return loop_count;
1057}
1058
1059void
1060ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061{
1062 io_blocktime = interval;
1063}
1064
1065void
1066ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067{
1068 timeout_blocktime = interval;
1069}
1070
1071static void noinline
1072loop_init (EV_P_ unsigned int flags)
1073{
1074 if (!backend)
688 { 1075 {
689#if EV_USE_MONOTONIC 1076#if EV_USE_MONOTONIC
690 { 1077 {
691 struct timespec ts; 1078 struct timespec ts;
692 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1079 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693 have_monotonic = 1; 1080 have_monotonic = 1;
694 } 1081 }
695#endif 1082#endif
696 1083
697 rt_now = ev_time (); 1084 ev_rt_now = ev_time ();
698 mn_now = get_clock (); 1085 mn_now = get_clock ();
699 now_floor = mn_now; 1086 now_floor = mn_now;
700 rtmn_diff = rt_now - mn_now; 1087 rtmn_diff = ev_rt_now - mn_now;
701 1088
702 if (methods == EVMETHOD_AUTO) 1089 io_blocktime = 0.;
703 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1090 timeout_blocktime = 0.;
1091
1092 /* pid check not overridable via env */
1093#ifndef _WIN32
1094 if (flags & EVFLAG_FORKCHECK)
1095 curpid = getpid ();
1096#endif
1097
1098 if (!(flags & EVFLAG_NOENV)
1099 && !enable_secure ()
1100 && getenv ("LIBEV_FLAGS"))
704 methods = atoi (getenv ("LIBEV_METHODS")); 1101 flags = atoi (getenv ("LIBEV_FLAGS"));
705 else
706 methods = EVMETHOD_ANY;
707 1102
708 method = 0; 1103 if (!(flags & 0x0000ffffUL))
1104 flags |= ev_recommended_backends ();
1105
1106 backend = 0;
1107 backend_fd = -1;
709#if EV_USE_WIN32 1108#if EV_USE_INOTIFY
710 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1109 fs_fd = -2;
1110#endif
1111
1112#if EV_USE_PORT
1113 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
711#endif 1114#endif
712#if EV_USE_KQUEUE 1115#if EV_USE_KQUEUE
713 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1116 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714#endif 1117#endif
715#if EV_USE_EPOLL 1118#if EV_USE_EPOLL
716 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1119 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717#endif 1120#endif
718#if EV_USE_POLL 1121#if EV_USE_POLL
719 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1122 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720#endif 1123#endif
721#if EV_USE_SELECT 1124#if EV_USE_SELECT
722 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1125 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723#endif 1126#endif
724 1127
725 ev_watcher_init (&sigev, sigcb); 1128 ev_init (&pipeev, pipecb);
726 ev_set_priority (&sigev, EV_MAXPRI); 1129 ev_set_priority (&pipeev, EV_MAXPRI);
727 } 1130 }
728} 1131}
729 1132
730void 1133static void noinline
731loop_destroy (EV_P) 1134loop_destroy (EV_P)
732{ 1135{
733 int i; 1136 int i;
734 1137
1138 if (ev_is_active (&pipeev))
1139 {
1140 ev_ref (EV_A); /* signal watcher */
1141 ev_io_stop (EV_A_ &pipeev);
1142
1143 close (evpipe [0]); evpipe [0] = 0;
1144 close (evpipe [1]); evpipe [1] = 0;
1145 }
1146
735#if EV_USE_WIN32 1147#if EV_USE_INOTIFY
736 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1148 if (fs_fd >= 0)
1149 close (fs_fd);
1150#endif
1151
1152 if (backend_fd >= 0)
1153 close (backend_fd);
1154
1155#if EV_USE_PORT
1156 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737#endif 1157#endif
738#if EV_USE_KQUEUE 1158#if EV_USE_KQUEUE
739 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1159 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740#endif 1160#endif
741#if EV_USE_EPOLL 1161#if EV_USE_EPOLL
742 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1162 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743#endif 1163#endif
744#if EV_USE_POLL 1164#if EV_USE_POLL
745 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1165 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746#endif 1166#endif
747#if EV_USE_SELECT 1167#if EV_USE_SELECT
748 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1168 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749#endif 1169#endif
750 1170
751 for (i = NUMPRI; i--; ) 1171 for (i = NUMPRI; i--; )
1172 {
752 array_free (pending, [i]); 1173 array_free (pending, [i]);
1174#if EV_IDLE_ENABLE
1175 array_free (idle, [i]);
1176#endif
1177 }
1178
1179 ev_free (anfds); anfdmax = 0;
753 1180
754 /* have to use the microsoft-never-gets-it-right macro */ 1181 /* have to use the microsoft-never-gets-it-right macro */
755 array_free_microshit (fdchange); 1182 array_free (fdchange, EMPTY);
756 array_free_microshit (timer); 1183 array_free (timer, EMPTY);
757 array_free_microshit (periodic); 1184#if EV_PERIODIC_ENABLE
758 array_free_microshit (idle); 1185 array_free (periodic, EMPTY);
759 array_free_microshit (prepare); 1186#endif
760 array_free_microshit (check); 1187#if EV_FORK_ENABLE
1188 array_free (fork, EMPTY);
1189#endif
1190 array_free (prepare, EMPTY);
1191 array_free (check, EMPTY);
761 1192
762 method = 0; 1193 backend = 0;
763} 1194}
764 1195
765static void 1196void inline_size infy_fork (EV_P);
1197
1198void inline_size
766loop_fork (EV_P) 1199loop_fork (EV_P)
767{ 1200{
1201#if EV_USE_PORT
1202 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1203#endif
1204#if EV_USE_KQUEUE
1205 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1206#endif
768#if EV_USE_EPOLL 1207#if EV_USE_EPOLL
769 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1208 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770#endif 1209#endif
771#if EV_USE_KQUEUE 1210#if EV_USE_INOTIFY
772 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1211 infy_fork (EV_A);
773#endif 1212#endif
774 1213
775 if (ev_is_active (&sigev)) 1214 if (ev_is_active (&pipeev))
776 { 1215 {
777 /* default loop */ 1216 /* this "locks" the handlers against writing to the pipe */
1217 gotsig = gotasync = 1;
778 1218
779 ev_ref (EV_A); 1219 ev_ref (EV_A);
780 ev_io_stop (EV_A_ &sigev); 1220 ev_io_stop (EV_A_ &pipeev);
781 close (sigpipe [0]); 1221 close (evpipe [0]);
782 close (sigpipe [1]); 1222 close (evpipe [1]);
783 1223
784 while (pipe (sigpipe))
785 syserr ("(libev) error creating pipe");
786
787 siginit (EV_A); 1224 evpipe_init (EV_A);
1225 /* now iterate over everything, in case we missed something */
1226 pipecb (EV_A_ &pipeev, EV_READ);
788 } 1227 }
789 1228
790 postfork = 0; 1229 postfork = 0;
791} 1230}
792 1231
793#if EV_MULTIPLICITY 1232#if EV_MULTIPLICITY
794struct ev_loop * 1233struct ev_loop *
795ev_loop_new (int methods) 1234ev_loop_new (unsigned int flags)
796{ 1235{
797 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1236 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
798 1237
799 memset (loop, 0, sizeof (struct ev_loop)); 1238 memset (loop, 0, sizeof (struct ev_loop));
800 1239
801 loop_init (EV_A_ methods); 1240 loop_init (EV_A_ flags);
802 1241
803 if (ev_method (EV_A)) 1242 if (ev_backend (EV_A))
804 return loop; 1243 return loop;
805 1244
806 return 0; 1245 return 0;
807} 1246}
808 1247
… …
814} 1253}
815 1254
816void 1255void
817ev_loop_fork (EV_P) 1256ev_loop_fork (EV_P)
818{ 1257{
819 postfork = 1; 1258 postfork = 1; /* must be in line with ev_default_fork */
820} 1259}
821 1260
822#endif 1261#endif
823 1262
824#if EV_MULTIPLICITY 1263#if EV_MULTIPLICITY
825struct ev_loop default_loop_struct;
826static struct ev_loop *default_loop;
827
828struct ev_loop * 1264struct ev_loop *
1265ev_default_loop_init (unsigned int flags)
829#else 1266#else
830static int default_loop;
831
832int 1267int
1268ev_default_loop (unsigned int flags)
833#endif 1269#endif
834ev_default_loop (int methods)
835{ 1270{
836 if (sigpipe [0] == sigpipe [1])
837 if (pipe (sigpipe))
838 return 0;
839
840 if (!default_loop) 1271 if (!ev_default_loop_ptr)
841 { 1272 {
842#if EV_MULTIPLICITY 1273#if EV_MULTIPLICITY
843 struct ev_loop *loop = default_loop = &default_loop_struct; 1274 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844#else 1275#else
845 default_loop = 1; 1276 ev_default_loop_ptr = 1;
846#endif 1277#endif
847 1278
848 loop_init (EV_A_ methods); 1279 loop_init (EV_A_ flags);
849 1280
850 if (ev_method (EV_A)) 1281 if (ev_backend (EV_A))
851 { 1282 {
852 siginit (EV_A);
853
854#ifndef WIN32 1283#ifndef _WIN32
855 ev_signal_init (&childev, childcb, SIGCHLD); 1284 ev_signal_init (&childev, childcb, SIGCHLD);
856 ev_set_priority (&childev, EV_MAXPRI); 1285 ev_set_priority (&childev, EV_MAXPRI);
857 ev_signal_start (EV_A_ &childev); 1286 ev_signal_start (EV_A_ &childev);
858 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1287 ev_unref (EV_A); /* child watcher should not keep loop alive */
859#endif 1288#endif
860 } 1289 }
861 else 1290 else
862 default_loop = 0; 1291 ev_default_loop_ptr = 0;
863 } 1292 }
864 1293
865 return default_loop; 1294 return ev_default_loop_ptr;
866} 1295}
867 1296
868void 1297void
869ev_default_destroy (void) 1298ev_default_destroy (void)
870{ 1299{
871#if EV_MULTIPLICITY 1300#if EV_MULTIPLICITY
872 struct ev_loop *loop = default_loop; 1301 struct ev_loop *loop = ev_default_loop_ptr;
873#endif 1302#endif
874 1303
875#ifndef WIN32 1304#ifndef _WIN32
876 ev_ref (EV_A); /* child watcher */ 1305 ev_ref (EV_A); /* child watcher */
877 ev_signal_stop (EV_A_ &childev); 1306 ev_signal_stop (EV_A_ &childev);
878#endif 1307#endif
879 1308
880 ev_ref (EV_A); /* signal watcher */
881 ev_io_stop (EV_A_ &sigev);
882
883 close (sigpipe [0]); sigpipe [0] = 0;
884 close (sigpipe [1]); sigpipe [1] = 0;
885
886 loop_destroy (EV_A); 1309 loop_destroy (EV_A);
887} 1310}
888 1311
889void 1312void
890ev_default_fork (void) 1313ev_default_fork (void)
891{ 1314{
892#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1316 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1317#endif
895 1318
896 if (method) 1319 if (backend)
897 postfork = 1; 1320 postfork = 1; /* must be in line with ev_loop_fork */
898} 1321}
899 1322
900/*****************************************************************************/ 1323/*****************************************************************************/
901 1324
902static int 1325void
903any_pending (EV_P) 1326ev_invoke (EV_P_ void *w, int revents)
904{ 1327{
905 int pri; 1328 EV_CB_INVOKE ((W)w, revents);
906
907 for (pri = NUMPRI; pri--; )
908 if (pendingcnt [pri])
909 return 1;
910
911 return 0;
912} 1329}
913 1330
914static void 1331void inline_speed
915call_pending (EV_P) 1332call_pending (EV_P)
916{ 1333{
917 int pri; 1334 int pri;
918 1335
919 for (pri = NUMPRI; pri--; ) 1336 for (pri = NUMPRI; pri--; )
920 while (pendingcnt [pri]) 1337 while (pendingcnt [pri])
921 { 1338 {
922 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1339 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923 1340
924 if (p->w) 1341 if (expect_true (p->w))
925 { 1342 {
1343 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1344
926 p->w->pending = 0; 1345 p->w->pending = 0;
927 p->w->cb (EV_A_ p->w, p->events); 1346 EV_CB_INVOKE (p->w, p->events);
928 } 1347 }
929 } 1348 }
930} 1349}
931 1350
932static void 1351void inline_size
933timers_reify (EV_P) 1352timers_reify (EV_P)
934{ 1353{
935 while (timercnt && ((WT)timers [0])->at <= mn_now) 1354 while (timercnt && ((WT)timers [0])->at <= mn_now)
936 { 1355 {
937 struct ev_timer *w = timers [0]; 1356 ev_timer *w = (ev_timer *)timers [0];
938 1357
939 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1358 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
940 1359
941 /* first reschedule or stop timer */ 1360 /* first reschedule or stop timer */
942 if (w->repeat) 1361 if (w->repeat)
943 { 1362 {
944 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1363 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1364
945 ((WT)w)->at = mn_now + w->repeat; 1365 ((WT)w)->at += w->repeat;
1366 if (((WT)w)->at < mn_now)
1367 ((WT)w)->at = mn_now;
1368
946 downheap ((WT *)timers, timercnt, 0); 1369 downheap (timers, timercnt, 0);
947 } 1370 }
948 else 1371 else
949 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1372 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950 1373
951 event (EV_A_ (W)w, EV_TIMEOUT); 1374 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952 } 1375 }
953} 1376}
954 1377
955static void 1378#if EV_PERIODIC_ENABLE
1379void inline_size
956periodics_reify (EV_P) 1380periodics_reify (EV_P)
957{ 1381{
958 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1382 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959 { 1383 {
960 struct ev_periodic *w = periodics [0]; 1384 ev_periodic *w = (ev_periodic *)periodics [0];
961 1385
962 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1386 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
963 1387
964 /* first reschedule or stop timer */ 1388 /* first reschedule or stop timer */
965 if (w->reschedule_cb) 1389 if (w->reschedule_cb)
966 { 1390 {
967 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1391 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
968
969 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1392 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
970 downheap ((WT *)periodics, periodiccnt, 0); 1393 downheap (periodics, periodiccnt, 0);
971 } 1394 }
972 else if (w->interval) 1395 else if (w->interval)
973 { 1396 {
974 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1397 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
975 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1399 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
976 downheap ((WT *)periodics, periodiccnt, 0); 1400 downheap (periodics, periodiccnt, 0);
977 } 1401 }
978 else 1402 else
979 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1403 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
980 1404
981 event (EV_A_ (W)w, EV_PERIODIC); 1405 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
982 } 1406 }
983} 1407}
984 1408
985static void 1409static void noinline
986periodics_reschedule (EV_P) 1410periodics_reschedule (EV_P)
987{ 1411{
988 int i; 1412 int i;
989 1413
990 /* adjust periodics after time jump */ 1414 /* adjust periodics after time jump */
991 for (i = 0; i < periodiccnt; ++i) 1415 for (i = 0; i < periodiccnt; ++i)
992 { 1416 {
993 struct ev_periodic *w = periodics [i]; 1417 ev_periodic *w = (ev_periodic *)periodics [i];
994 1418
995 if (w->reschedule_cb) 1419 if (w->reschedule_cb)
996 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1420 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
997 else if (w->interval) 1421 else if (w->interval)
998 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1422 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
999 } 1423 }
1000 1424
1001 /* now rebuild the heap */ 1425 /* now rebuild the heap */
1002 for (i = periodiccnt >> 1; i--; ) 1426 for (i = periodiccnt >> 1; i--; )
1003 downheap ((WT *)periodics, periodiccnt, i); 1427 downheap (periodics, periodiccnt, i);
1004} 1428}
1429#endif
1005 1430
1006inline int 1431#if EV_IDLE_ENABLE
1007time_update_monotonic (EV_P) 1432void inline_size
1433idle_reify (EV_P)
1008{ 1434{
1009 mn_now = get_clock (); 1435 if (expect_false (idleall))
1010
1011 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1012 {
1013 rt_now = rtmn_diff + mn_now;
1014 return 0;
1015 } 1436 {
1016 else 1437 int pri;
1438
1439 for (pri = NUMPRI; pri--; )
1440 {
1441 if (pendingcnt [pri])
1442 break;
1443
1444 if (idlecnt [pri])
1445 {
1446 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1447 break;
1448 }
1449 }
1017 { 1450 }
1018 now_floor = mn_now;
1019 rt_now = ev_time ();
1020 return 1;
1021 }
1022} 1451}
1452#endif
1023 1453
1024static void 1454void inline_speed
1025time_update (EV_P) 1455time_update (EV_P_ ev_tstamp max_block)
1026{ 1456{
1027 int i; 1457 int i;
1028 1458
1029#if EV_USE_MONOTONIC 1459#if EV_USE_MONOTONIC
1030 if (expect_true (have_monotonic)) 1460 if (expect_true (have_monotonic))
1031 { 1461 {
1032 if (time_update_monotonic (EV_A)) 1462 ev_tstamp odiff = rtmn_diff;
1463
1464 mn_now = get_clock ();
1465
1466 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1467 /* interpolate in the meantime */
1468 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033 { 1469 {
1034 ev_tstamp odiff = rtmn_diff; 1470 ev_rt_now = rtmn_diff + mn_now;
1471 return;
1472 }
1035 1473
1474 now_floor = mn_now;
1475 ev_rt_now = ev_time ();
1476
1036 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1477 /* loop a few times, before making important decisions.
1478 * on the choice of "4": one iteration isn't enough,
1479 * in case we get preempted during the calls to
1480 * ev_time and get_clock. a second call is almost guaranteed
1481 * to succeed in that case, though. and looping a few more times
1482 * doesn't hurt either as we only do this on time-jumps or
1483 * in the unlikely event of having been preempted here.
1484 */
1485 for (i = 4; --i; )
1037 { 1486 {
1038 rtmn_diff = rt_now - mn_now; 1487 rtmn_diff = ev_rt_now - mn_now;
1039 1488
1040 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1489 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1041 return; /* all is well */ 1490 return; /* all is well */
1042 1491
1043 rt_now = ev_time (); 1492 ev_rt_now = ev_time ();
1044 mn_now = get_clock (); 1493 mn_now = get_clock ();
1045 now_floor = mn_now; 1494 now_floor = mn_now;
1046 } 1495 }
1047 1496
1497# if EV_PERIODIC_ENABLE
1498 periodics_reschedule (EV_A);
1499# endif
1500 /* no timer adjustment, as the monotonic clock doesn't jump */
1501 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502 }
1503 else
1504#endif
1505 {
1506 ev_rt_now = ev_time ();
1507
1508 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1509 {
1510#if EV_PERIODIC_ENABLE
1048 periodics_reschedule (EV_A); 1511 periodics_reschedule (EV_A);
1049 /* no timer adjustment, as the monotonic clock doesn't jump */ 1512#endif
1050 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1513 /* adjust timers. this is easy, as the offset is the same for all of them */
1514 for (i = 0; i < timercnt; ++i)
1515 ((WT)timers [i])->at += ev_rt_now - mn_now;
1051 } 1516 }
1052 }
1053 else
1054#endif
1055 {
1056 rt_now = ev_time ();
1057 1517
1058 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1059 {
1060 periodics_reschedule (EV_A);
1061
1062 /* adjust timers. this is easy, as the offset is the same for all */
1063 for (i = 0; i < timercnt; ++i)
1064 ((WT)timers [i])->at += rt_now - mn_now;
1065 }
1066
1067 mn_now = rt_now; 1518 mn_now = ev_rt_now;
1068 } 1519 }
1069} 1520}
1070 1521
1071void 1522void
1072ev_ref (EV_P) 1523ev_ref (EV_P)
… …
1083static int loop_done; 1534static int loop_done;
1084 1535
1085void 1536void
1086ev_loop (EV_P_ int flags) 1537ev_loop (EV_P_ int flags)
1087{ 1538{
1088 double block;
1089 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1539 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1540 ? EVUNLOOP_ONE
1541 : EVUNLOOP_CANCEL;
1542
1543 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1090 1544
1091 do 1545 do
1092 { 1546 {
1547#ifndef _WIN32
1548 if (expect_false (curpid)) /* penalise the forking check even more */
1549 if (expect_false (getpid () != curpid))
1550 {
1551 curpid = getpid ();
1552 postfork = 1;
1553 }
1554#endif
1555
1556#if EV_FORK_ENABLE
1557 /* we might have forked, so queue fork handlers */
1558 if (expect_false (postfork))
1559 if (forkcnt)
1560 {
1561 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1562 call_pending (EV_A);
1563 }
1564#endif
1565
1093 /* queue check watchers (and execute them) */ 1566 /* queue prepare watchers (and execute them) */
1094 if (expect_false (preparecnt)) 1567 if (expect_false (preparecnt))
1095 { 1568 {
1096 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1569 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1097 call_pending (EV_A); 1570 call_pending (EV_A);
1098 } 1571 }
1099 1572
1573 if (expect_false (!activecnt))
1574 break;
1575
1100 /* we might have forked, so reify kernel state if necessary */ 1576 /* we might have forked, so reify kernel state if necessary */
1101 if (expect_false (postfork)) 1577 if (expect_false (postfork))
1102 loop_fork (EV_A); 1578 loop_fork (EV_A);
1103 1579
1104 /* update fd-related kernel structures */ 1580 /* update fd-related kernel structures */
1105 fd_reify (EV_A); 1581 fd_reify (EV_A);
1106 1582
1107 /* calculate blocking time */ 1583 /* calculate blocking time */
1584 {
1585 ev_tstamp waittime = 0.;
1586 ev_tstamp sleeptime = 0.;
1108 1587
1109 /* we only need this for !monotonic clock or timers, but as we basically 1588 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1110 always have timers, we just calculate it always */
1111#if EV_USE_MONOTONIC
1112 if (expect_true (have_monotonic))
1113 time_update_monotonic (EV_A);
1114 else
1115#endif
1116 { 1589 {
1117 rt_now = ev_time (); 1590 /* update time to cancel out callback processing overhead */
1118 mn_now = rt_now; 1591 time_update (EV_A_ 1e100);
1119 }
1120 1592
1121 if (flags & EVLOOP_NONBLOCK || idlecnt)
1122 block = 0.;
1123 else
1124 {
1125 block = MAX_BLOCKTIME; 1593 waittime = MAX_BLOCKTIME;
1126 1594
1127 if (timercnt) 1595 if (timercnt)
1128 { 1596 {
1129 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1597 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1130 if (block > to) block = to; 1598 if (waittime > to) waittime = to;
1131 } 1599 }
1132 1600
1601#if EV_PERIODIC_ENABLE
1133 if (periodiccnt) 1602 if (periodiccnt)
1134 { 1603 {
1135 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1604 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1136 if (block > to) block = to; 1605 if (waittime > to) waittime = to;
1137 } 1606 }
1607#endif
1138 1608
1139 if (block < 0.) block = 0.; 1609 if (expect_false (waittime < timeout_blocktime))
1610 waittime = timeout_blocktime;
1611
1612 sleeptime = waittime - backend_fudge;
1613
1614 if (expect_true (sleeptime > io_blocktime))
1615 sleeptime = io_blocktime;
1616
1617 if (sleeptime)
1618 {
1619 ev_sleep (sleeptime);
1620 waittime -= sleeptime;
1621 }
1140 } 1622 }
1141 1623
1142 method_poll (EV_A_ block); 1624 ++loop_count;
1625 backend_poll (EV_A_ waittime);
1143 1626
1144 /* update rt_now, do magic */ 1627 /* update ev_rt_now, do magic */
1145 time_update (EV_A); 1628 time_update (EV_A_ waittime + sleeptime);
1629 }
1146 1630
1147 /* queue pending timers and reschedule them */ 1631 /* queue pending timers and reschedule them */
1148 timers_reify (EV_A); /* relative timers called last */ 1632 timers_reify (EV_A); /* relative timers called last */
1633#if EV_PERIODIC_ENABLE
1149 periodics_reify (EV_A); /* absolute timers called first */ 1634 periodics_reify (EV_A); /* absolute timers called first */
1635#endif
1150 1636
1637#if EV_IDLE_ENABLE
1151 /* queue idle watchers unless io or timers are pending */ 1638 /* queue idle watchers unless other events are pending */
1152 if (idlecnt && !any_pending (EV_A)) 1639 idle_reify (EV_A);
1153 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1640#endif
1154 1641
1155 /* queue check watchers, to be executed first */ 1642 /* queue check watchers, to be executed first */
1156 if (checkcnt) 1643 if (expect_false (checkcnt))
1157 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1644 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1158 1645
1159 call_pending (EV_A); 1646 call_pending (EV_A);
1647
1160 } 1648 }
1161 while (activecnt && !loop_done); 1649 while (expect_true (activecnt && !loop_done));
1162 1650
1163 if (loop_done != 2) 1651 if (loop_done == EVUNLOOP_ONE)
1164 loop_done = 0; 1652 loop_done = EVUNLOOP_CANCEL;
1165} 1653}
1166 1654
1167void 1655void
1168ev_unloop (EV_P_ int how) 1656ev_unloop (EV_P_ int how)
1169{ 1657{
1170 loop_done = how; 1658 loop_done = how;
1171} 1659}
1172 1660
1173/*****************************************************************************/ 1661/*****************************************************************************/
1174 1662
1175inline void 1663void inline_size
1176wlist_add (WL *head, WL elem) 1664wlist_add (WL *head, WL elem)
1177{ 1665{
1178 elem->next = *head; 1666 elem->next = *head;
1179 *head = elem; 1667 *head = elem;
1180} 1668}
1181 1669
1182inline void 1670void inline_size
1183wlist_del (WL *head, WL elem) 1671wlist_del (WL *head, WL elem)
1184{ 1672{
1185 while (*head) 1673 while (*head)
1186 { 1674 {
1187 if (*head == elem) 1675 if (*head == elem)
… …
1192 1680
1193 head = &(*head)->next; 1681 head = &(*head)->next;
1194 } 1682 }
1195} 1683}
1196 1684
1197inline void 1685void inline_speed
1198ev_clear_pending (EV_P_ W w) 1686clear_pending (EV_P_ W w)
1199{ 1687{
1200 if (w->pending) 1688 if (w->pending)
1201 { 1689 {
1202 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1690 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1203 w->pending = 0; 1691 w->pending = 0;
1204 } 1692 }
1205} 1693}
1206 1694
1207inline void 1695int
1696ev_clear_pending (EV_P_ void *w)
1697{
1698 W w_ = (W)w;
1699 int pending = w_->pending;
1700
1701 if (expect_true (pending))
1702 {
1703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1704 w_->pending = 0;
1705 p->w = 0;
1706 return p->events;
1707 }
1708 else
1709 return 0;
1710}
1711
1712void inline_size
1713pri_adjust (EV_P_ W w)
1714{
1715 int pri = w->priority;
1716 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1718 w->priority = pri;
1719}
1720
1721void inline_speed
1208ev_start (EV_P_ W w, int active) 1722ev_start (EV_P_ W w, int active)
1209{ 1723{
1210 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1724 pri_adjust (EV_A_ w);
1211 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1212
1213 w->active = active; 1725 w->active = active;
1214 ev_ref (EV_A); 1726 ev_ref (EV_A);
1215} 1727}
1216 1728
1217inline void 1729void inline_size
1218ev_stop (EV_P_ W w) 1730ev_stop (EV_P_ W w)
1219{ 1731{
1220 ev_unref (EV_A); 1732 ev_unref (EV_A);
1221 w->active = 0; 1733 w->active = 0;
1222} 1734}
1223 1735
1224/*****************************************************************************/ 1736/*****************************************************************************/
1225 1737
1226void 1738void noinline
1227ev_io_start (EV_P_ struct ev_io *w) 1739ev_io_start (EV_P_ ev_io *w)
1228{ 1740{
1229 int fd = w->fd; 1741 int fd = w->fd;
1230 1742
1231 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1232 return; 1744 return;
1233 1745
1234 assert (("ev_io_start called with negative fd", fd >= 0)); 1746 assert (("ev_io_start called with negative fd", fd >= 0));
1235 1747
1236 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1237 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1749 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1238 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1750 wlist_add (&anfds[fd].head, (WL)w);
1239 1751
1240 fd_change (EV_A_ fd); 1752 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1753 w->events &= ~EV_IOFDSET;
1241} 1754}
1242 1755
1243void 1756void noinline
1244ev_io_stop (EV_P_ struct ev_io *w) 1757ev_io_stop (EV_P_ ev_io *w)
1245{ 1758{
1246 ev_clear_pending (EV_A_ (W)w); 1759 clear_pending (EV_A_ (W)w);
1247 if (!ev_is_active (w)) 1760 if (expect_false (!ev_is_active (w)))
1248 return; 1761 return;
1249 1762
1763 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1764
1250 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1765 wlist_del (&anfds[w->fd].head, (WL)w);
1251 ev_stop (EV_A_ (W)w); 1766 ev_stop (EV_A_ (W)w);
1252 1767
1253 fd_change (EV_A_ w->fd); 1768 fd_change (EV_A_ w->fd, 1);
1254} 1769}
1255 1770
1256void 1771void noinline
1257ev_timer_start (EV_P_ struct ev_timer *w) 1772ev_timer_start (EV_P_ ev_timer *w)
1258{ 1773{
1259 if (ev_is_active (w)) 1774 if (expect_false (ev_is_active (w)))
1260 return; 1775 return;
1261 1776
1262 ((WT)w)->at += mn_now; 1777 ((WT)w)->at += mn_now;
1263 1778
1264 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1779 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1265 1780
1266 ev_start (EV_A_ (W)w, ++timercnt); 1781 ev_start (EV_A_ (W)w, ++timercnt);
1267 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1782 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1268 timers [timercnt - 1] = w; 1783 timers [timercnt - 1] = (WT)w;
1269 upheap ((WT *)timers, timercnt - 1); 1784 upheap (timers, timercnt - 1);
1270 1785
1271 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1786 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1272} 1787}
1273 1788
1274void 1789void noinline
1275ev_timer_stop (EV_P_ struct ev_timer *w) 1790ev_timer_stop (EV_P_ ev_timer *w)
1276{ 1791{
1277 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1278 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1279 return; 1794 return;
1280 1795
1281 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1796 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1282 1797
1283 if (((W)w)->active < timercnt--) 1798 {
1799 int active = ((W)w)->active;
1800
1801 if (expect_true (--active < --timercnt))
1284 { 1802 {
1285 timers [((W)w)->active - 1] = timers [timercnt]; 1803 timers [active] = timers [timercnt];
1286 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1804 adjustheap (timers, timercnt, active);
1287 } 1805 }
1806 }
1288 1807
1289 ((WT)w)->at = w->repeat; 1808 ((WT)w)->at -= mn_now;
1290 1809
1291 ev_stop (EV_A_ (W)w); 1810 ev_stop (EV_A_ (W)w);
1292} 1811}
1293 1812
1294void 1813void noinline
1295ev_timer_again (EV_P_ struct ev_timer *w) 1814ev_timer_again (EV_P_ ev_timer *w)
1296{ 1815{
1297 if (ev_is_active (w)) 1816 if (ev_is_active (w))
1298 { 1817 {
1299 if (w->repeat) 1818 if (w->repeat)
1300 { 1819 {
1301 ((WT)w)->at = mn_now + w->repeat; 1820 ((WT)w)->at = mn_now + w->repeat;
1302 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1821 adjustheap (timers, timercnt, ((W)w)->active - 1);
1303 } 1822 }
1304 else 1823 else
1305 ev_timer_stop (EV_A_ w); 1824 ev_timer_stop (EV_A_ w);
1306 } 1825 }
1307 else if (w->repeat) 1826 else if (w->repeat)
1827 {
1828 w->at = w->repeat;
1308 ev_timer_start (EV_A_ w); 1829 ev_timer_start (EV_A_ w);
1830 }
1309} 1831}
1310 1832
1311void 1833#if EV_PERIODIC_ENABLE
1834void noinline
1312ev_periodic_start (EV_P_ struct ev_periodic *w) 1835ev_periodic_start (EV_P_ ev_periodic *w)
1313{ 1836{
1314 if (ev_is_active (w)) 1837 if (expect_false (ev_is_active (w)))
1315 return; 1838 return;
1316 1839
1317 if (w->reschedule_cb) 1840 if (w->reschedule_cb)
1318 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1841 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1319 else if (w->interval) 1842 else if (w->interval)
1320 { 1843 {
1321 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1844 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1322 /* this formula differs from the one in periodic_reify because we do not always round up */ 1845 /* this formula differs from the one in periodic_reify because we do not always round up */
1323 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1846 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1324 } 1847 }
1848 else
1849 ((WT)w)->at = w->offset;
1325 1850
1326 ev_start (EV_A_ (W)w, ++periodiccnt); 1851 ev_start (EV_A_ (W)w, ++periodiccnt);
1327 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1852 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1328 periodics [periodiccnt - 1] = w; 1853 periodics [periodiccnt - 1] = (WT)w;
1329 upheap ((WT *)periodics, periodiccnt - 1); 1854 upheap (periodics, periodiccnt - 1);
1330 1855
1331 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1856 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1332} 1857}
1333 1858
1334void 1859void noinline
1335ev_periodic_stop (EV_P_ struct ev_periodic *w) 1860ev_periodic_stop (EV_P_ ev_periodic *w)
1336{ 1861{
1337 ev_clear_pending (EV_A_ (W)w); 1862 clear_pending (EV_A_ (W)w);
1338 if (!ev_is_active (w)) 1863 if (expect_false (!ev_is_active (w)))
1339 return; 1864 return;
1340 1865
1341 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1866 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1342 1867
1343 if (((W)w)->active < periodiccnt--) 1868 {
1869 int active = ((W)w)->active;
1870
1871 if (expect_true (--active < --periodiccnt))
1344 { 1872 {
1345 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1873 periodics [active] = periodics [periodiccnt];
1346 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1874 adjustheap (periodics, periodiccnt, active);
1347 } 1875 }
1876 }
1348 1877
1349 ev_stop (EV_A_ (W)w); 1878 ev_stop (EV_A_ (W)w);
1350} 1879}
1351 1880
1352void 1881void noinline
1353ev_periodic_again (EV_P_ struct ev_periodic *w) 1882ev_periodic_again (EV_P_ ev_periodic *w)
1354{ 1883{
1884 /* TODO: use adjustheap and recalculation */
1355 ev_periodic_stop (EV_A_ w); 1885 ev_periodic_stop (EV_A_ w);
1356 ev_periodic_start (EV_A_ w); 1886 ev_periodic_start (EV_A_ w);
1357} 1887}
1358 1888#endif
1359void
1360ev_idle_start (EV_P_ struct ev_idle *w)
1361{
1362 if (ev_is_active (w))
1363 return;
1364
1365 ev_start (EV_A_ (W)w, ++idlecnt);
1366 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1367 idles [idlecnt - 1] = w;
1368}
1369
1370void
1371ev_idle_stop (EV_P_ struct ev_idle *w)
1372{
1373 ev_clear_pending (EV_A_ (W)w);
1374 if (ev_is_active (w))
1375 return;
1376
1377 idles [((W)w)->active - 1] = idles [--idlecnt];
1378 ev_stop (EV_A_ (W)w);
1379}
1380
1381void
1382ev_prepare_start (EV_P_ struct ev_prepare *w)
1383{
1384 if (ev_is_active (w))
1385 return;
1386
1387 ev_start (EV_A_ (W)w, ++preparecnt);
1388 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1389 prepares [preparecnt - 1] = w;
1390}
1391
1392void
1393ev_prepare_stop (EV_P_ struct ev_prepare *w)
1394{
1395 ev_clear_pending (EV_A_ (W)w);
1396 if (ev_is_active (w))
1397 return;
1398
1399 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1400 ev_stop (EV_A_ (W)w);
1401}
1402
1403void
1404ev_check_start (EV_P_ struct ev_check *w)
1405{
1406 if (ev_is_active (w))
1407 return;
1408
1409 ev_start (EV_A_ (W)w, ++checkcnt);
1410 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1411 checks [checkcnt - 1] = w;
1412}
1413
1414void
1415ev_check_stop (EV_P_ struct ev_check *w)
1416{
1417 ev_clear_pending (EV_A_ (W)w);
1418 if (ev_is_active (w))
1419 return;
1420
1421 checks [((W)w)->active - 1] = checks [--checkcnt];
1422 ev_stop (EV_A_ (W)w);
1423}
1424 1889
1425#ifndef SA_RESTART 1890#ifndef SA_RESTART
1426# define SA_RESTART 0 1891# define SA_RESTART 0
1427#endif 1892#endif
1428 1893
1429void 1894void noinline
1430ev_signal_start (EV_P_ struct ev_signal *w) 1895ev_signal_start (EV_P_ ev_signal *w)
1431{ 1896{
1432#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1433 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1898 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1434#endif 1899#endif
1435 if (ev_is_active (w)) 1900 if (expect_false (ev_is_active (w)))
1436 return; 1901 return;
1437 1902
1438 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1903 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1439 1904
1905 evpipe_init (EV_A);
1906
1907 {
1908#ifndef _WIN32
1909 sigset_t full, prev;
1910 sigfillset (&full);
1911 sigprocmask (SIG_SETMASK, &full, &prev);
1912#endif
1913
1914 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1915
1916#ifndef _WIN32
1917 sigprocmask (SIG_SETMASK, &prev, 0);
1918#endif
1919 }
1920
1440 ev_start (EV_A_ (W)w, 1); 1921 ev_start (EV_A_ (W)w, 1);
1441 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1442 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1922 wlist_add (&signals [w->signum - 1].head, (WL)w);
1443 1923
1444 if (!((WL)w)->next) 1924 if (!((WL)w)->next)
1445 { 1925 {
1446#if WIN32 1926#if _WIN32
1447 signal (w->signum, sighandler); 1927 signal (w->signum, sighandler);
1448#else 1928#else
1449 struct sigaction sa; 1929 struct sigaction sa;
1450 sa.sa_handler = sighandler; 1930 sa.sa_handler = sighandler;
1451 sigfillset (&sa.sa_mask); 1931 sigfillset (&sa.sa_mask);
… …
1453 sigaction (w->signum, &sa, 0); 1933 sigaction (w->signum, &sa, 0);
1454#endif 1934#endif
1455 } 1935 }
1456} 1936}
1457 1937
1458void 1938void noinline
1459ev_signal_stop (EV_P_ struct ev_signal *w) 1939ev_signal_stop (EV_P_ ev_signal *w)
1460{ 1940{
1461 ev_clear_pending (EV_A_ (W)w); 1941 clear_pending (EV_A_ (W)w);
1462 if (!ev_is_active (w)) 1942 if (expect_false (!ev_is_active (w)))
1463 return; 1943 return;
1464 1944
1465 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1945 wlist_del (&signals [w->signum - 1].head, (WL)w);
1466 ev_stop (EV_A_ (W)w); 1946 ev_stop (EV_A_ (W)w);
1467 1947
1468 if (!signals [w->signum - 1].head) 1948 if (!signals [w->signum - 1].head)
1469 signal (w->signum, SIG_DFL); 1949 signal (w->signum, SIG_DFL);
1470} 1950}
1471 1951
1472void 1952void
1473ev_child_start (EV_P_ struct ev_child *w) 1953ev_child_start (EV_P_ ev_child *w)
1474{ 1954{
1475#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1476 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1956 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1477#endif 1957#endif
1478 if (ev_is_active (w)) 1958 if (expect_false (ev_is_active (w)))
1479 return; 1959 return;
1480 1960
1481 ev_start (EV_A_ (W)w, 1); 1961 ev_start (EV_A_ (W)w, 1);
1482 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1962 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1483} 1963}
1484 1964
1485void 1965void
1486ev_child_stop (EV_P_ struct ev_child *w) 1966ev_child_stop (EV_P_ ev_child *w)
1487{ 1967{
1488 ev_clear_pending (EV_A_ (W)w); 1968 clear_pending (EV_A_ (W)w);
1489 if (ev_is_active (w)) 1969 if (expect_false (!ev_is_active (w)))
1490 return; 1970 return;
1491 1971
1492 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1972 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1493 ev_stop (EV_A_ (W)w); 1973 ev_stop (EV_A_ (W)w);
1494} 1974}
1495 1975
1976#if EV_STAT_ENABLE
1977
1978# ifdef _WIN32
1979# undef lstat
1980# define lstat(a,b) _stati64 (a,b)
1981# endif
1982
1983#define DEF_STAT_INTERVAL 5.0074891
1984#define MIN_STAT_INTERVAL 0.1074891
1985
1986static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1987
1988#if EV_USE_INOTIFY
1989# define EV_INOTIFY_BUFSIZE 8192
1990
1991static void noinline
1992infy_add (EV_P_ ev_stat *w)
1993{
1994 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1995
1996 if (w->wd < 0)
1997 {
1998 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1999
2000 /* monitor some parent directory for speedup hints */
2001 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2002 {
2003 char path [4096];
2004 strcpy (path, w->path);
2005
2006 do
2007 {
2008 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2009 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2010
2011 char *pend = strrchr (path, '/');
2012
2013 if (!pend)
2014 break; /* whoops, no '/', complain to your admin */
2015
2016 *pend = 0;
2017 w->wd = inotify_add_watch (fs_fd, path, mask);
2018 }
2019 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2020 }
2021 }
2022 else
2023 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2024
2025 if (w->wd >= 0)
2026 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2027}
2028
2029static void noinline
2030infy_del (EV_P_ ev_stat *w)
2031{
2032 int slot;
2033 int wd = w->wd;
2034
2035 if (wd < 0)
2036 return;
2037
2038 w->wd = -2;
2039 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2040 wlist_del (&fs_hash [slot].head, (WL)w);
2041
2042 /* remove this watcher, if others are watching it, they will rearm */
2043 inotify_rm_watch (fs_fd, wd);
2044}
2045
2046static void noinline
2047infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2048{
2049 if (slot < 0)
2050 /* overflow, need to check for all hahs slots */
2051 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2052 infy_wd (EV_A_ slot, wd, ev);
2053 else
2054 {
2055 WL w_;
2056
2057 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2058 {
2059 ev_stat *w = (ev_stat *)w_;
2060 w_ = w_->next; /* lets us remove this watcher and all before it */
2061
2062 if (w->wd == wd || wd == -1)
2063 {
2064 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2065 {
2066 w->wd = -1;
2067 infy_add (EV_A_ w); /* re-add, no matter what */
2068 }
2069
2070 stat_timer_cb (EV_A_ &w->timer, 0);
2071 }
2072 }
2073 }
2074}
2075
2076static void
2077infy_cb (EV_P_ ev_io *w, int revents)
2078{
2079 char buf [EV_INOTIFY_BUFSIZE];
2080 struct inotify_event *ev = (struct inotify_event *)buf;
2081 int ofs;
2082 int len = read (fs_fd, buf, sizeof (buf));
2083
2084 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2085 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2086}
2087
2088void inline_size
2089infy_init (EV_P)
2090{
2091 if (fs_fd != -2)
2092 return;
2093
2094 fs_fd = inotify_init ();
2095
2096 if (fs_fd >= 0)
2097 {
2098 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2099 ev_set_priority (&fs_w, EV_MAXPRI);
2100 ev_io_start (EV_A_ &fs_w);
2101 }
2102}
2103
2104void inline_size
2105infy_fork (EV_P)
2106{
2107 int slot;
2108
2109 if (fs_fd < 0)
2110 return;
2111
2112 close (fs_fd);
2113 fs_fd = inotify_init ();
2114
2115 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2116 {
2117 WL w_ = fs_hash [slot].head;
2118 fs_hash [slot].head = 0;
2119
2120 while (w_)
2121 {
2122 ev_stat *w = (ev_stat *)w_;
2123 w_ = w_->next; /* lets us add this watcher */
2124
2125 w->wd = -1;
2126
2127 if (fs_fd >= 0)
2128 infy_add (EV_A_ w); /* re-add, no matter what */
2129 else
2130 ev_timer_start (EV_A_ &w->timer);
2131 }
2132
2133 }
2134}
2135
2136#endif
2137
2138void
2139ev_stat_stat (EV_P_ ev_stat *w)
2140{
2141 if (lstat (w->path, &w->attr) < 0)
2142 w->attr.st_nlink = 0;
2143 else if (!w->attr.st_nlink)
2144 w->attr.st_nlink = 1;
2145}
2146
2147static void noinline
2148stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2149{
2150 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2151
2152 /* we copy this here each the time so that */
2153 /* prev has the old value when the callback gets invoked */
2154 w->prev = w->attr;
2155 ev_stat_stat (EV_A_ w);
2156
2157 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2158 if (
2159 w->prev.st_dev != w->attr.st_dev
2160 || w->prev.st_ino != w->attr.st_ino
2161 || w->prev.st_mode != w->attr.st_mode
2162 || w->prev.st_nlink != w->attr.st_nlink
2163 || w->prev.st_uid != w->attr.st_uid
2164 || w->prev.st_gid != w->attr.st_gid
2165 || w->prev.st_rdev != w->attr.st_rdev
2166 || w->prev.st_size != w->attr.st_size
2167 || w->prev.st_atime != w->attr.st_atime
2168 || w->prev.st_mtime != w->attr.st_mtime
2169 || w->prev.st_ctime != w->attr.st_ctime
2170 ) {
2171 #if EV_USE_INOTIFY
2172 infy_del (EV_A_ w);
2173 infy_add (EV_A_ w);
2174 ev_stat_stat (EV_A_ w); /* avoid race... */
2175 #endif
2176
2177 ev_feed_event (EV_A_ w, EV_STAT);
2178 }
2179}
2180
2181void
2182ev_stat_start (EV_P_ ev_stat *w)
2183{
2184 if (expect_false (ev_is_active (w)))
2185 return;
2186
2187 /* since we use memcmp, we need to clear any padding data etc. */
2188 memset (&w->prev, 0, sizeof (ev_statdata));
2189 memset (&w->attr, 0, sizeof (ev_statdata));
2190
2191 ev_stat_stat (EV_A_ w);
2192
2193 if (w->interval < MIN_STAT_INTERVAL)
2194 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2195
2196 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2197 ev_set_priority (&w->timer, ev_priority (w));
2198
2199#if EV_USE_INOTIFY
2200 infy_init (EV_A);
2201
2202 if (fs_fd >= 0)
2203 infy_add (EV_A_ w);
2204 else
2205#endif
2206 ev_timer_start (EV_A_ &w->timer);
2207
2208 ev_start (EV_A_ (W)w, 1);
2209}
2210
2211void
2212ev_stat_stop (EV_P_ ev_stat *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218#if EV_USE_INOTIFY
2219 infy_del (EV_A_ w);
2220#endif
2221 ev_timer_stop (EV_A_ &w->timer);
2222
2223 ev_stop (EV_A_ (W)w);
2224}
2225#endif
2226
2227#if EV_IDLE_ENABLE
2228void
2229ev_idle_start (EV_P_ ev_idle *w)
2230{
2231 if (expect_false (ev_is_active (w)))
2232 return;
2233
2234 pri_adjust (EV_A_ (W)w);
2235
2236 {
2237 int active = ++idlecnt [ABSPRI (w)];
2238
2239 ++idleall;
2240 ev_start (EV_A_ (W)w, active);
2241
2242 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2243 idles [ABSPRI (w)][active - 1] = w;
2244 }
2245}
2246
2247void
2248ev_idle_stop (EV_P_ ev_idle *w)
2249{
2250 clear_pending (EV_A_ (W)w);
2251 if (expect_false (!ev_is_active (w)))
2252 return;
2253
2254 {
2255 int active = ((W)w)->active;
2256
2257 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2258 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2259
2260 ev_stop (EV_A_ (W)w);
2261 --idleall;
2262 }
2263}
2264#endif
2265
2266void
2267ev_prepare_start (EV_P_ ev_prepare *w)
2268{
2269 if (expect_false (ev_is_active (w)))
2270 return;
2271
2272 ev_start (EV_A_ (W)w, ++preparecnt);
2273 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2274 prepares [preparecnt - 1] = w;
2275}
2276
2277void
2278ev_prepare_stop (EV_P_ ev_prepare *w)
2279{
2280 clear_pending (EV_A_ (W)w);
2281 if (expect_false (!ev_is_active (w)))
2282 return;
2283
2284 {
2285 int active = ((W)w)->active;
2286 prepares [active - 1] = prepares [--preparecnt];
2287 ((W)prepares [active - 1])->active = active;
2288 }
2289
2290 ev_stop (EV_A_ (W)w);
2291}
2292
2293void
2294ev_check_start (EV_P_ ev_check *w)
2295{
2296 if (expect_false (ev_is_active (w)))
2297 return;
2298
2299 ev_start (EV_A_ (W)w, ++checkcnt);
2300 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2301 checks [checkcnt - 1] = w;
2302}
2303
2304void
2305ev_check_stop (EV_P_ ev_check *w)
2306{
2307 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w)))
2309 return;
2310
2311 {
2312 int active = ((W)w)->active;
2313 checks [active - 1] = checks [--checkcnt];
2314 ((W)checks [active - 1])->active = active;
2315 }
2316
2317 ev_stop (EV_A_ (W)w);
2318}
2319
2320#if EV_EMBED_ENABLE
2321void noinline
2322ev_embed_sweep (EV_P_ ev_embed *w)
2323{
2324 ev_loop (w->other, EVLOOP_NONBLOCK);
2325}
2326
2327static void
2328embed_io_cb (EV_P_ ev_io *io, int revents)
2329{
2330 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2331
2332 if (ev_cb (w))
2333 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2334 else
2335 ev_loop (w->other, EVLOOP_NONBLOCK);
2336}
2337
2338static void
2339embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2340{
2341 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2342
2343 {
2344 struct ev_loop *loop = w->other;
2345
2346 while (fdchangecnt)
2347 {
2348 fd_reify (EV_A);
2349 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2350 }
2351 }
2352}
2353
2354#if 0
2355static void
2356embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2357{
2358 ev_idle_stop (EV_A_ idle);
2359}
2360#endif
2361
2362void
2363ev_embed_start (EV_P_ ev_embed *w)
2364{
2365 if (expect_false (ev_is_active (w)))
2366 return;
2367
2368 {
2369 struct ev_loop *loop = w->other;
2370 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2371 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2372 }
2373
2374 ev_set_priority (&w->io, ev_priority (w));
2375 ev_io_start (EV_A_ &w->io);
2376
2377 ev_prepare_init (&w->prepare, embed_prepare_cb);
2378 ev_set_priority (&w->prepare, EV_MINPRI);
2379 ev_prepare_start (EV_A_ &w->prepare);
2380
2381 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382
2383 ev_start (EV_A_ (W)w, 1);
2384}
2385
2386void
2387ev_embed_stop (EV_P_ ev_embed *w)
2388{
2389 clear_pending (EV_A_ (W)w);
2390 if (expect_false (!ev_is_active (w)))
2391 return;
2392
2393 ev_io_stop (EV_A_ &w->io);
2394 ev_prepare_stop (EV_A_ &w->prepare);
2395
2396 ev_stop (EV_A_ (W)w);
2397}
2398#endif
2399
2400#if EV_FORK_ENABLE
2401void
2402ev_fork_start (EV_P_ ev_fork *w)
2403{
2404 if (expect_false (ev_is_active (w)))
2405 return;
2406
2407 ev_start (EV_A_ (W)w, ++forkcnt);
2408 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2409 forks [forkcnt - 1] = w;
2410}
2411
2412void
2413ev_fork_stop (EV_P_ ev_fork *w)
2414{
2415 clear_pending (EV_A_ (W)w);
2416 if (expect_false (!ev_is_active (w)))
2417 return;
2418
2419 {
2420 int active = ((W)w)->active;
2421 forks [active - 1] = forks [--forkcnt];
2422 ((W)forks [active - 1])->active = active;
2423 }
2424
2425 ev_stop (EV_A_ (W)w);
2426}
2427#endif
2428
2429#if EV_ASYNC_ENABLE
2430void
2431ev_async_start (EV_P_ ev_async *w)
2432{
2433 if (expect_false (ev_is_active (w)))
2434 return;
2435
2436 evpipe_init (EV_A);
2437
2438 ev_start (EV_A_ (W)w, ++asynccnt);
2439 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440 asyncs [asynccnt - 1] = w;
2441}
2442
2443void
2444ev_async_stop (EV_P_ ev_async *w)
2445{
2446 clear_pending (EV_A_ (W)w);
2447 if (expect_false (!ev_is_active (w)))
2448 return;
2449
2450 {
2451 int active = ((W)w)->active;
2452 asyncs [active - 1] = asyncs [--asynccnt];
2453 ((W)asyncs [active - 1])->active = active;
2454 }
2455
2456 ev_stop (EV_A_ (W)w);
2457}
2458
2459void
2460ev_async_send (EV_P_ ev_async *w)
2461{
2462 w->sent = 1;
2463 evpipe_write (EV_A_ 0, 1);
2464}
2465#endif
2466
1496/*****************************************************************************/ 2467/*****************************************************************************/
1497 2468
1498struct ev_once 2469struct ev_once
1499{ 2470{
1500 struct ev_io io; 2471 ev_io io;
1501 struct ev_timer to; 2472 ev_timer to;
1502 void (*cb)(int revents, void *arg); 2473 void (*cb)(int revents, void *arg);
1503 void *arg; 2474 void *arg;
1504}; 2475};
1505 2476
1506static void 2477static void
… …
1515 2486
1516 cb (revents, arg); 2487 cb (revents, arg);
1517} 2488}
1518 2489
1519static void 2490static void
1520once_cb_io (EV_P_ struct ev_io *w, int revents) 2491once_cb_io (EV_P_ ev_io *w, int revents)
1521{ 2492{
1522 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2493 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1523} 2494}
1524 2495
1525static void 2496static void
1526once_cb_to (EV_P_ struct ev_timer *w, int revents) 2497once_cb_to (EV_P_ ev_timer *w, int revents)
1527{ 2498{
1528 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2499 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1529} 2500}
1530 2501
1531void 2502void
1532ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2503ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1533{ 2504{
1534 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2505 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1535 2506
1536 if (!once) 2507 if (expect_false (!once))
2508 {
1537 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2509 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1538 else 2510 return;
1539 { 2511 }
2512
1540 once->cb = cb; 2513 once->cb = cb;
1541 once->arg = arg; 2514 once->arg = arg;
1542 2515
1543 ev_watcher_init (&once->io, once_cb_io); 2516 ev_init (&once->io, once_cb_io);
1544 if (fd >= 0) 2517 if (fd >= 0)
1545 { 2518 {
1546 ev_io_set (&once->io, fd, events); 2519 ev_io_set (&once->io, fd, events);
1547 ev_io_start (EV_A_ &once->io); 2520 ev_io_start (EV_A_ &once->io);
1548 } 2521 }
1549 2522
1550 ev_watcher_init (&once->to, once_cb_to); 2523 ev_init (&once->to, once_cb_to);
1551 if (timeout >= 0.) 2524 if (timeout >= 0.)
1552 { 2525 {
1553 ev_timer_set (&once->to, timeout, 0.); 2526 ev_timer_set (&once->to, timeout, 0.);
1554 ev_timer_start (EV_A_ &once->to); 2527 ev_timer_start (EV_A_ &once->to);
1555 }
1556 } 2528 }
1557} 2529}
1558 2530
2531#if EV_MULTIPLICITY
2532 #include "ev_wrap.h"
2533#endif
2534
2535#ifdef __cplusplus
2536}
2537#endif
2538

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