ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
37# include "config.h" 49# include "config.h"
50# endif
38 51
39# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 53# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
42# endif 55# endif
43# ifndef EV_USE_REALTIME 56# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
45# endif 58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
46# endif 66# endif
47 67
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
50# endif 74# endif
51 75
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
54# endif 82# endif
55 83
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
58# endif 90# endif
59 91
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
62# endif 98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
63 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
64#endif 132#endif
65 133
66#include <math.h> 134#include <math.h>
67#include <stdlib.h> 135#include <stdlib.h>
68#include <fcntl.h> 136#include <fcntl.h>
… …
75#include <sys/types.h> 143#include <sys/types.h>
76#include <time.h> 144#include <time.h>
77 145
78#include <signal.h> 146#include <signal.h>
79 147
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 148#ifdef EV_H
141# include EV_H 149# include EV_H
142#else 150#else
143# include "ev.h" 151# include "ev.h"
144#endif 152#endif
145 153
154#ifndef _WIN32
155# include <sys/time.h>
156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
163# endif
164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
167
168#ifndef EV_USE_MONOTONIC
169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
178#endif
179
180#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1
182#endif
183
184#ifndef EV_USE_POLL
185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
190#endif
191
192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
196# define EV_USE_EPOLL 0
197# endif
198#endif
199
200#ifndef EV_USE_KQUEUE
201# define EV_USE_KQUEUE 0
202#endif
203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241
242#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0
245#endif
246
247#ifndef CLOCK_REALTIME
248# undef EV_USE_REALTIME
249# define EV_USE_REALTIME 0
250#endif
251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
267#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h>
269#endif
270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273int eventfd (unsigned int initval, int flags);
274#endif
275
276/**/
277
278/*
279 * This is used to avoid floating point rounding problems.
280 * It is added to ev_rt_now when scheduling periodics
281 * to ensure progress, time-wise, even when rounding
282 * errors are against us.
283 * This value is good at least till the year 4000.
284 * Better solutions welcome.
285 */
286#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
287
288#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
289#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
290/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
291
146#if __GNUC__ >= 3 292#if __GNUC__ >= 4
147# define expect(expr,value) __builtin_expect ((expr),(value)) 293# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 294# define noinline __attribute__ ((noinline))
149#else 295#else
150# define expect(expr,value) (expr) 296# define expect(expr,value) (expr)
151# define inline static 297# define noinline
298# if __STDC_VERSION__ < 199901L
299# define inline
300# endif
152#endif 301#endif
153 302
154#define expect_false(expr) expect ((expr) != 0, 0) 303#define expect_false(expr) expect ((expr) != 0, 0)
155#define expect_true(expr) expect ((expr) != 0, 1) 304#define expect_true(expr) expect ((expr) != 0, 1)
305#define inline_size static inline
306
307#if EV_MINIMAL
308# define inline_speed static noinline
309#else
310# define inline_speed static inline
311#endif
156 312
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 313#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 314#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 315
316#define EMPTY /* required for microsofts broken pseudo-c compiler */
317#define EMPTY2(a,b) /* used to suppress some warnings */
318
160typedef struct ev_watcher *W; 319typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 320typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 321typedef ev_watcher_time *WT;
163 322
323#if EV_USE_MONOTONIC
324/* sig_atomic_t is used to avoid per-thread variables or locking but still */
325/* giving it a reasonably high chance of working on typical architetcures */
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 326static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
327#endif
165 328
329#ifdef _WIN32
166#include "ev_win32.c" 330# include "ev_win32.c"
331#endif
167 332
168/*****************************************************************************/ 333/*****************************************************************************/
169 334
170static void (*syserr_cb)(const char *msg); 335static void (*syserr_cb)(const char *msg);
171 336
337void
172void ev_set_syserr_cb (void (*cb)(const char *msg)) 338ev_set_syserr_cb (void (*cb)(const char *msg))
173{ 339{
174 syserr_cb = cb; 340 syserr_cb = cb;
175} 341}
176 342
177static void 343static void noinline
178syserr (const char *msg) 344syserr (const char *msg)
179{ 345{
180 if (!msg) 346 if (!msg)
181 msg = "(libev) system error"; 347 msg = "(libev) system error";
182 348
… …
189 } 355 }
190} 356}
191 357
192static void *(*alloc)(void *ptr, long size); 358static void *(*alloc)(void *ptr, long size);
193 359
360void
194void ev_set_allocator (void *(*cb)(void *ptr, long size)) 361ev_set_allocator (void *(*cb)(void *ptr, long size))
195{ 362{
196 alloc = cb; 363 alloc = cb;
197} 364}
198 365
199static void * 366inline_speed void *
200ev_realloc (void *ptr, long size) 367ev_realloc (void *ptr, long size)
201{ 368{
202 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 369 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
203 370
204 if (!ptr && size) 371 if (!ptr && size)
… …
218typedef struct 385typedef struct
219{ 386{
220 WL head; 387 WL head;
221 unsigned char events; 388 unsigned char events;
222 unsigned char reify; 389 unsigned char reify;
390#if EV_SELECT_IS_WINSOCKET
391 SOCKET handle;
392#endif
223} ANFD; 393} ANFD;
224 394
225typedef struct 395typedef struct
226{ 396{
227 W w; 397 W w;
228 int events; 398 int events;
229} ANPENDING; 399} ANPENDING;
230 400
401#if EV_USE_INOTIFY
402typedef struct
403{
404 WL head;
405} ANFS;
406#endif
407
231#if EV_MULTIPLICITY 408#if EV_MULTIPLICITY
232 409
233 struct ev_loop 410 struct ev_loop
234 { 411 {
235 ev_tstamp ev_rt_now; 412 ev_tstamp ev_rt_now;
413 #define ev_rt_now ((loop)->ev_rt_now)
236 #define VAR(name,decl) decl; 414 #define VAR(name,decl) decl;
237 #include "ev_vars.h" 415 #include "ev_vars.h"
238 #undef VAR 416 #undef VAR
239 }; 417 };
240 #include "ev_wrap.h" 418 #include "ev_wrap.h"
241 419
242 struct ev_loop default_loop_struct; 420 static struct ev_loop default_loop_struct;
243 static struct ev_loop *default_loop; 421 struct ev_loop *ev_default_loop_ptr;
244 422
245#else 423#else
246 424
247 ev_tstamp ev_rt_now; 425 ev_tstamp ev_rt_now;
248 #define VAR(name,decl) static decl; 426 #define VAR(name,decl) static decl;
249 #include "ev_vars.h" 427 #include "ev_vars.h"
250 #undef VAR 428 #undef VAR
251 429
252 static int default_loop; 430 static int ev_default_loop_ptr;
253 431
254#endif 432#endif
255 433
256/*****************************************************************************/ 434/*****************************************************************************/
257 435
… …
267 gettimeofday (&tv, 0); 445 gettimeofday (&tv, 0);
268 return tv.tv_sec + tv.tv_usec * 1e-6; 446 return tv.tv_sec + tv.tv_usec * 1e-6;
269#endif 447#endif
270} 448}
271 449
272inline ev_tstamp 450ev_tstamp inline_size
273get_clock (void) 451get_clock (void)
274{ 452{
275#if EV_USE_MONOTONIC 453#if EV_USE_MONOTONIC
276 if (expect_true (have_monotonic)) 454 if (expect_true (have_monotonic))
277 { 455 {
… …
290{ 468{
291 return ev_rt_now; 469 return ev_rt_now;
292} 470}
293#endif 471#endif
294 472
295#define array_roundsize(type,n) ((n) | 4 & ~3) 473void
474ev_sleep (ev_tstamp delay)
475{
476 if (delay > 0.)
477 {
478#if EV_USE_NANOSLEEP
479 struct timespec ts;
480
481 ts.tv_sec = (time_t)delay;
482 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
483
484 nanosleep (&ts, 0);
485#elif defined(_WIN32)
486 Sleep ((unsigned long)(delay * 1e3));
487#else
488 struct timeval tv;
489
490 tv.tv_sec = (time_t)delay;
491 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
492
493 select (0, 0, 0, 0, &tv);
494#endif
495 }
496}
497
498/*****************************************************************************/
499
500int inline_size
501array_nextsize (int elem, int cur, int cnt)
502{
503 int ncur = cur + 1;
504
505 do
506 ncur <<= 1;
507 while (cnt > ncur);
508
509 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
510 if (elem * ncur > 4096)
511 {
512 ncur *= elem;
513 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
514 ncur = ncur - sizeof (void *) * 4;
515 ncur /= elem;
516 }
517
518 return ncur;
519}
520
521static noinline void *
522array_realloc (int elem, void *base, int *cur, int cnt)
523{
524 *cur = array_nextsize (elem, *cur, cnt);
525 return ev_realloc (base, elem * *cur);
526}
296 527
297#define array_needsize(type,base,cur,cnt,init) \ 528#define array_needsize(type,base,cur,cnt,init) \
298 if (expect_false ((cnt) > cur)) \ 529 if (expect_false ((cnt) > (cur))) \
299 { \ 530 { \
300 int newcnt = cur; \ 531 int ocur_ = (cur); \
301 do \ 532 (base) = (type *)array_realloc \
302 { \ 533 (sizeof (type), (base), &(cur), (cnt)); \
303 newcnt = array_roundsize (type, newcnt << 1); \ 534 init ((base) + (ocur_), (cur) - ocur_); \
304 } \
305 while ((cnt) > newcnt); \
306 \
307 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
308 init (base + cur, newcnt - cur); \
309 cur = newcnt; \
310 } 535 }
311 536
537#if 0
312#define array_slim(type,stem) \ 538#define array_slim(type,stem) \
313 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 539 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314 { \ 540 { \
315 stem ## max = array_roundsize (stem ## cnt >> 1); \ 541 stem ## max = array_roundsize (stem ## cnt >> 1); \
316 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 542 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 543 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318 } 544 }
319 545#endif
320/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322#define array_free_microshit(stem) \
323 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324 546
325#define array_free(stem, idx) \ 547#define array_free(stem, idx) \
326 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 548 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
327 549
328/*****************************************************************************/ 550/*****************************************************************************/
329 551
330static void 552void noinline
553ev_feed_event (EV_P_ void *w, int revents)
554{
555 W w_ = (W)w;
556 int pri = ABSPRI (w_);
557
558 if (expect_false (w_->pending))
559 pendings [pri][w_->pending - 1].events |= revents;
560 else
561 {
562 w_->pending = ++pendingcnt [pri];
563 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
564 pendings [pri][w_->pending - 1].w = w_;
565 pendings [pri][w_->pending - 1].events = revents;
566 }
567}
568
569void inline_speed
570queue_events (EV_P_ W *events, int eventcnt, int type)
571{
572 int i;
573
574 for (i = 0; i < eventcnt; ++i)
575 ev_feed_event (EV_A_ events [i], type);
576}
577
578/*****************************************************************************/
579
580void inline_size
331anfds_init (ANFD *base, int count) 581anfds_init (ANFD *base, int count)
332{ 582{
333 while (count--) 583 while (count--)
334 { 584 {
335 base->head = 0; 585 base->head = 0;
… …
338 588
339 ++base; 589 ++base;
340 } 590 }
341} 591}
342 592
343void 593void inline_speed
344ev_feed_event (EV_P_ void *w, int revents)
345{
346 W w_ = (W)w;
347
348 if (w_->pending)
349 {
350 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351 return;
352 }
353
354 w_->pending = ++pendingcnt [ABSPRI (w_)];
355 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
356 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358}
359
360static void
361queue_events (EV_P_ W *events, int eventcnt, int type)
362{
363 int i;
364
365 for (i = 0; i < eventcnt; ++i)
366 ev_feed_event (EV_A_ events [i], type);
367}
368
369inline void
370fd_event (EV_P_ int fd, int revents) 594fd_event (EV_P_ int fd, int revents)
371{ 595{
372 ANFD *anfd = anfds + fd; 596 ANFD *anfd = anfds + fd;
373 struct ev_io *w; 597 ev_io *w;
374 598
375 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 599 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
376 { 600 {
377 int ev = w->events & revents; 601 int ev = w->events & revents;
378 602
379 if (ev) 603 if (ev)
380 ev_feed_event (EV_A_ (W)w, ev); 604 ev_feed_event (EV_A_ (W)w, ev);
… …
382} 606}
383 607
384void 608void
385ev_feed_fd_event (EV_P_ int fd, int revents) 609ev_feed_fd_event (EV_P_ int fd, int revents)
386{ 610{
611 if (fd >= 0 && fd < anfdmax)
387 fd_event (EV_A_ fd, revents); 612 fd_event (EV_A_ fd, revents);
388} 613}
389 614
390/*****************************************************************************/ 615void inline_size
391
392static void
393fd_reify (EV_P) 616fd_reify (EV_P)
394{ 617{
395 int i; 618 int i;
396 619
397 for (i = 0; i < fdchangecnt; ++i) 620 for (i = 0; i < fdchangecnt; ++i)
398 { 621 {
399 int fd = fdchanges [i]; 622 int fd = fdchanges [i];
400 ANFD *anfd = anfds + fd; 623 ANFD *anfd = anfds + fd;
401 struct ev_io *w; 624 ev_io *w;
402 625
403 int events = 0; 626 unsigned char events = 0;
404 627
405 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 628 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
406 events |= w->events; 629 events |= (unsigned char)w->events;
407 630
631#if EV_SELECT_IS_WINSOCKET
632 if (events)
633 {
634 unsigned long argp;
635 #ifdef EV_FD_TO_WIN32_HANDLE
636 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
637 #else
638 anfd->handle = _get_osfhandle (fd);
639 #endif
640 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
641 }
642#endif
643
644 {
645 unsigned char o_events = anfd->events;
646 unsigned char o_reify = anfd->reify;
647
408 anfd->reify = 0; 648 anfd->reify = 0;
409
410 method_modify (EV_A_ fd, anfd->events, events);
411 anfd->events = events; 649 anfd->events = events;
650
651 if (o_events != events || o_reify & EV_IOFDSET)
652 backend_modify (EV_A_ fd, o_events, events);
653 }
412 } 654 }
413 655
414 fdchangecnt = 0; 656 fdchangecnt = 0;
415} 657}
416 658
417static void 659void inline_size
418fd_change (EV_P_ int fd) 660fd_change (EV_P_ int fd, int flags)
419{ 661{
420 if (anfds [fd].reify) 662 unsigned char reify = anfds [fd].reify;
421 return;
422
423 anfds [fd].reify = 1; 663 anfds [fd].reify |= flags;
424 664
665 if (expect_true (!reify))
666 {
425 ++fdchangecnt; 667 ++fdchangecnt;
426 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 668 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427 fdchanges [fdchangecnt - 1] = fd; 669 fdchanges [fdchangecnt - 1] = fd;
670 }
428} 671}
429 672
430static void 673void inline_speed
431fd_kill (EV_P_ int fd) 674fd_kill (EV_P_ int fd)
432{ 675{
433 struct ev_io *w; 676 ev_io *w;
434 677
435 while ((w = (struct ev_io *)anfds [fd].head)) 678 while ((w = (ev_io *)anfds [fd].head))
436 { 679 {
437 ev_io_stop (EV_A_ w); 680 ev_io_stop (EV_A_ w);
438 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 681 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
439 } 682 }
440} 683}
441 684
442static int 685int inline_size
443fd_valid (int fd) 686fd_valid (int fd)
444{ 687{
445#ifdef WIN32 688#ifdef _WIN32
446 return !!win32_get_osfhandle (fd); 689 return _get_osfhandle (fd) != -1;
447#else 690#else
448 return fcntl (fd, F_GETFD) != -1; 691 return fcntl (fd, F_GETFD) != -1;
449#endif 692#endif
450} 693}
451 694
452/* called on EBADF to verify fds */ 695/* called on EBADF to verify fds */
453static void 696static void noinline
454fd_ebadf (EV_P) 697fd_ebadf (EV_P)
455{ 698{
456 int fd; 699 int fd;
457 700
458 for (fd = 0; fd < anfdmax; ++fd) 701 for (fd = 0; fd < anfdmax; ++fd)
… …
460 if (!fd_valid (fd) == -1 && errno == EBADF) 703 if (!fd_valid (fd) == -1 && errno == EBADF)
461 fd_kill (EV_A_ fd); 704 fd_kill (EV_A_ fd);
462} 705}
463 706
464/* called on ENOMEM in select/poll to kill some fds and retry */ 707/* called on ENOMEM in select/poll to kill some fds and retry */
465static void 708static void noinline
466fd_enomem (EV_P) 709fd_enomem (EV_P)
467{ 710{
468 int fd; 711 int fd;
469 712
470 for (fd = anfdmax; fd--; ) 713 for (fd = anfdmax; fd--; )
… …
473 fd_kill (EV_A_ fd); 716 fd_kill (EV_A_ fd);
474 return; 717 return;
475 } 718 }
476} 719}
477 720
478/* usually called after fork if method needs to re-arm all fds from scratch */ 721/* usually called after fork if backend needs to re-arm all fds from scratch */
479static void 722static void noinline
480fd_rearm_all (EV_P) 723fd_rearm_all (EV_P)
481{ 724{
482 int fd; 725 int fd;
483 726
484 /* this should be highly optimised to not do anything but set a flag */
485 for (fd = 0; fd < anfdmax; ++fd) 727 for (fd = 0; fd < anfdmax; ++fd)
486 if (anfds [fd].events) 728 if (anfds [fd].events)
487 { 729 {
488 anfds [fd].events = 0; 730 anfds [fd].events = 0;
489 fd_change (EV_A_ fd); 731 fd_change (EV_A_ fd, EV_IOFDSET | 1);
490 } 732 }
491} 733}
492 734
493/*****************************************************************************/ 735/*****************************************************************************/
494 736
495static void 737void inline_speed
496upheap (WT *heap, int k) 738upheap (WT *heap, int k)
497{ 739{
498 WT w = heap [k]; 740 WT w = heap [k];
499 741
500 while (k && heap [k >> 1]->at > w->at) 742 while (k)
501 { 743 {
744 int p = (k - 1) >> 1;
745
746 if (heap [p]->at <= w->at)
747 break;
748
502 heap [k] = heap [k >> 1]; 749 heap [k] = heap [p];
503 ((W)heap [k])->active = k + 1; 750 ((W)heap [k])->active = k + 1;
504 k >>= 1; 751 k = p;
505 } 752 }
506 753
507 heap [k] = w; 754 heap [k] = w;
508 ((W)heap [k])->active = k + 1; 755 ((W)heap [k])->active = k + 1;
509
510} 756}
511 757
512static void 758void inline_speed
513downheap (WT *heap, int N, int k) 759downheap (WT *heap, int N, int k)
514{ 760{
515 WT w = heap [k]; 761 WT w = heap [k];
516 762
517 while (k < (N >> 1)) 763 for (;;)
518 { 764 {
519 int j = k << 1; 765 int c = (k << 1) + 1;
520 766
521 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 767 if (c >= N)
522 ++j;
523
524 if (w->at <= heap [j]->at)
525 break; 768 break;
526 769
770 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
771 ? 1 : 0;
772
773 if (w->at <= heap [c]->at)
774 break;
775
527 heap [k] = heap [j]; 776 heap [k] = heap [c];
528 ((W)heap [k])->active = k + 1; 777 ((W)heap [k])->active = k + 1;
778
529 k = j; 779 k = c;
530 } 780 }
531 781
532 heap [k] = w; 782 heap [k] = w;
533 ((W)heap [k])->active = k + 1; 783 ((W)heap [k])->active = k + 1;
534} 784}
535 785
536inline void 786void inline_size
537adjustheap (WT *heap, int N, int k, ev_tstamp at) 787adjustheap (WT *heap, int N, int k)
538{ 788{
539 ev_tstamp old_at = heap [k]->at; 789 upheap (heap, k);
540 heap [k]->at = at;
541
542 if (old_at < at)
543 downheap (heap, N, k); 790 downheap (heap, N, k);
544 else
545 upheap (heap, k);
546} 791}
547 792
548/*****************************************************************************/ 793/*****************************************************************************/
549 794
550typedef struct 795typedef struct
551{ 796{
552 WL head; 797 WL head;
553 sig_atomic_t volatile gotsig; 798 EV_ATOMIC_T gotsig;
554} ANSIG; 799} ANSIG;
555 800
556static ANSIG *signals; 801static ANSIG *signals;
557static int signalmax; 802static int signalmax;
558 803
559static int sigpipe [2]; 804static EV_ATOMIC_T gotsig;
560static sig_atomic_t volatile gotsig;
561static struct ev_io sigev;
562 805
563static void 806void inline_size
564signals_init (ANSIG *base, int count) 807signals_init (ANSIG *base, int count)
565{ 808{
566 while (count--) 809 while (count--)
567 { 810 {
568 base->head = 0; 811 base->head = 0;
… …
570 813
571 ++base; 814 ++base;
572 } 815 }
573} 816}
574 817
818/*****************************************************************************/
819
820void inline_speed
821fd_intern (int fd)
822{
823#ifdef _WIN32
824 int arg = 1;
825 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
826#else
827 fcntl (fd, F_SETFD, FD_CLOEXEC);
828 fcntl (fd, F_SETFL, O_NONBLOCK);
829#endif
830}
831
832static void noinline
833evpipe_init (EV_P)
834{
835 if (!ev_is_active (&pipeev))
836 {
837#if EV_USE_EVENTFD
838 if ((evfd = eventfd (0, 0)) >= 0)
839 {
840 evpipe [0] = -1;
841 fd_intern (evfd);
842 ev_io_set (&pipeev, evfd, EV_READ);
843 }
844 else
845#endif
846 {
847 while (pipe (evpipe))
848 syserr ("(libev) error creating signal/async pipe");
849
850 fd_intern (evpipe [0]);
851 fd_intern (evpipe [1]);
852 ev_io_set (&pipeev, evpipe [0], EV_READ);
853 }
854
855 ev_io_start (EV_A_ &pipeev);
856 ev_unref (EV_A); /* watcher should not keep loop alive */
857 }
858}
859
860void inline_size
861evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862{
863 if (!*flag)
864 {
865 int old_errno = errno; /* save errno because write might clobber it */
866
867 *flag = 1;
868
869#if EV_USE_EVENTFD
870 if (evfd >= 0)
871 {
872 uint64_t counter = 1;
873 write (evfd, &counter, sizeof (uint64_t));
874 }
875 else
876#endif
877 write (evpipe [1], &old_errno, 1);
878
879 errno = old_errno;
880 }
881}
882
575static void 883static void
884pipecb (EV_P_ ev_io *iow, int revents)
885{
886#if EV_USE_EVENTFD
887 if (evfd >= 0)
888 {
889 uint64_t counter = 1;
890 read (evfd, &counter, sizeof (uint64_t));
891 }
892 else
893#endif
894 {
895 char dummy;
896 read (evpipe [0], &dummy, 1);
897 }
898
899 if (gotsig && ev_is_default_loop (EV_A))
900 {
901 int signum;
902 gotsig = 0;
903
904 for (signum = signalmax; signum--; )
905 if (signals [signum].gotsig)
906 ev_feed_signal_event (EV_A_ signum + 1);
907 }
908
909#if EV_ASYNC_ENABLE
910 if (gotasync)
911 {
912 int i;
913 gotasync = 0;
914
915 for (i = asynccnt; i--; )
916 if (asyncs [i]->sent)
917 {
918 asyncs [i]->sent = 0;
919 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
920 }
921 }
922#endif
923}
924
925/*****************************************************************************/
926
927static void
576sighandler (int signum) 928ev_sighandler (int signum)
577{ 929{
930#if EV_MULTIPLICITY
931 struct ev_loop *loop = &default_loop_struct;
932#endif
933
578#if WIN32 934#if _WIN32
579 signal (signum, sighandler); 935 signal (signum, ev_sighandler);
580#endif 936#endif
581 937
582 signals [signum - 1].gotsig = 1; 938 signals [signum - 1].gotsig = 1;
583 939 evpipe_write (EV_A_ &gotsig);
584 if (!gotsig)
585 {
586 int old_errno = errno;
587 gotsig = 1;
588#ifdef WIN32
589 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590#else
591 write (sigpipe [1], &signum, 1);
592#endif
593 errno = old_errno;
594 }
595} 940}
596 941
597void 942void noinline
598ev_feed_signal_event (EV_P_ int signum) 943ev_feed_signal_event (EV_P_ int signum)
599{ 944{
600 WL w; 945 WL w;
601 946
602#if EV_MULTIPLICITY 947#if EV_MULTIPLICITY
603 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 948 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
604#endif 949#endif
605 950
606 --signum; 951 --signum;
607 952
608 if (signum < 0 || signum >= signalmax) 953 if (signum < 0 || signum >= signalmax)
… …
612 957
613 for (w = signals [signum].head; w; w = w->next) 958 for (w = signals [signum].head; w; w = w->next)
614 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 959 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615} 960}
616 961
617static void
618sigcb (EV_P_ struct ev_io *iow, int revents)
619{
620 int signum;
621
622#ifdef WIN32
623 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624#else
625 read (sigpipe [0], &revents, 1);
626#endif
627 gotsig = 0;
628
629 for (signum = signalmax; signum--; )
630 if (signals [signum].gotsig)
631 ev_feed_signal_event (EV_A_ signum + 1);
632}
633
634static void
635siginit (EV_P)
636{
637#ifndef WIN32
638 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
639 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641 /* rather than sort out wether we really need nb, set it */
642 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644#endif
645
646 ev_io_set (&sigev, sigpipe [0], EV_READ);
647 ev_io_start (EV_A_ &sigev);
648 ev_unref (EV_A); /* child watcher should not keep loop alive */
649}
650
651/*****************************************************************************/ 962/*****************************************************************************/
652 963
653static struct ev_child *childs [PID_HASHSIZE]; 964static WL childs [EV_PID_HASHSIZE];
654 965
655#ifndef WIN32 966#ifndef _WIN32
656 967
657static struct ev_signal childev; 968static ev_signal childev;
969
970#ifndef WIFCONTINUED
971# define WIFCONTINUED(status) 0
972#endif
973
974void inline_speed
975child_reap (EV_P_ int chain, int pid, int status)
976{
977 ev_child *w;
978 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979
980 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
981 {
982 if ((w->pid == pid || !w->pid)
983 && (!traced || (w->flags & 1)))
984 {
985 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
986 w->rpid = pid;
987 w->rstatus = status;
988 ev_feed_event (EV_A_ (W)w, EV_CHILD);
989 }
990 }
991}
658 992
659#ifndef WCONTINUED 993#ifndef WCONTINUED
660# define WCONTINUED 0 994# define WCONTINUED 0
661#endif 995#endif
662 996
663static void 997static void
664child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
665{
666 struct ev_child *w;
667
668 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
669 if (w->pid == pid || !w->pid)
670 {
671 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672 w->rpid = pid;
673 w->rstatus = status;
674 ev_feed_event (EV_A_ (W)w, EV_CHILD);
675 }
676}
677
678static void
679childcb (EV_P_ struct ev_signal *sw, int revents) 998childcb (EV_P_ ev_signal *sw, int revents)
680{ 999{
681 int pid, status; 1000 int pid, status;
682 1001
1002 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
683 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1003 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684 { 1004 if (!WCONTINUED
1005 || errno != EINVAL
1006 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1007 return;
1008
685 /* make sure we are called again until all childs have been reaped */ 1009 /* make sure we are called again until all children have been reaped */
1010 /* we need to do it this way so that the callback gets called before we continue */
686 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1011 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687 1012
688 child_reap (EV_A_ sw, pid, pid, status); 1013 child_reap (EV_A_ pid, pid, status);
1014 if (EV_PID_HASHSIZE > 1)
689 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1015 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
690 }
691} 1016}
692 1017
693#endif 1018#endif
694 1019
695/*****************************************************************************/ 1020/*****************************************************************************/
696 1021
1022#if EV_USE_PORT
1023# include "ev_port.c"
1024#endif
697#if EV_USE_KQUEUE 1025#if EV_USE_KQUEUE
698# include "ev_kqueue.c" 1026# include "ev_kqueue.c"
699#endif 1027#endif
700#if EV_USE_EPOLL 1028#if EV_USE_EPOLL
701# include "ev_epoll.c" 1029# include "ev_epoll.c"
… …
718{ 1046{
719 return EV_VERSION_MINOR; 1047 return EV_VERSION_MINOR;
720} 1048}
721 1049
722/* return true if we are running with elevated privileges and should ignore env variables */ 1050/* return true if we are running with elevated privileges and should ignore env variables */
723static int 1051int inline_size
724enable_secure (void) 1052enable_secure (void)
725{ 1053{
726#ifdef WIN32 1054#ifdef _WIN32
727 return 0; 1055 return 0;
728#else 1056#else
729 return getuid () != geteuid () 1057 return getuid () != geteuid ()
730 || getgid () != getegid (); 1058 || getgid () != getegid ();
731#endif 1059#endif
732} 1060}
733 1061
734int 1062unsigned int
735ev_method (EV_P) 1063ev_supported_backends (void)
736{ 1064{
737 return method; 1065 unsigned int flags = 0;
738}
739 1066
740static void 1067 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
741loop_init (EV_P_ int methods) 1068 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1069 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1070 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1071 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1072
1073 return flags;
1074}
1075
1076unsigned int
1077ev_recommended_backends (void)
742{ 1078{
743 if (!method) 1079 unsigned int flags = ev_supported_backends ();
1080
1081#ifndef __NetBSD__
1082 /* kqueue is borked on everything but netbsd apparently */
1083 /* it usually doesn't work correctly on anything but sockets and pipes */
1084 flags &= ~EVBACKEND_KQUEUE;
1085#endif
1086#ifdef __APPLE__
1087 // flags &= ~EVBACKEND_KQUEUE; for documentation
1088 flags &= ~EVBACKEND_POLL;
1089#endif
1090
1091 return flags;
1092}
1093
1094unsigned int
1095ev_embeddable_backends (void)
1096{
1097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1098
1099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1100 /* please fix it and tell me how to detect the fix */
1101 flags &= ~EVBACKEND_EPOLL;
1102
1103 return flags;
1104}
1105
1106unsigned int
1107ev_backend (EV_P)
1108{
1109 return backend;
1110}
1111
1112unsigned int
1113ev_loop_count (EV_P)
1114{
1115 return loop_count;
1116}
1117
1118void
1119ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120{
1121 io_blocktime = interval;
1122}
1123
1124void
1125ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126{
1127 timeout_blocktime = interval;
1128}
1129
1130static void noinline
1131loop_init (EV_P_ unsigned int flags)
1132{
1133 if (!backend)
744 { 1134 {
745#if EV_USE_MONOTONIC 1135#if EV_USE_MONOTONIC
746 { 1136 {
747 struct timespec ts; 1137 struct timespec ts;
748 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1138 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
749 have_monotonic = 1; 1139 have_monotonic = 1;
750 } 1140 }
751#endif 1141#endif
752 1142
753 ev_rt_now = ev_time (); 1143 ev_rt_now = ev_time ();
754 mn_now = get_clock (); 1144 mn_now = get_clock ();
755 now_floor = mn_now; 1145 now_floor = mn_now;
756 rtmn_diff = ev_rt_now - mn_now; 1146 rtmn_diff = ev_rt_now - mn_now;
757 1147
758 if (methods == EVMETHOD_AUTO) 1148 io_blocktime = 0.;
759 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1149 timeout_blocktime = 0.;
1150 backend = 0;
1151 backend_fd = -1;
1152 gotasync = 0;
1153#if EV_USE_INOTIFY
1154 fs_fd = -2;
1155#endif
1156
1157 /* pid check not overridable via env */
1158#ifndef _WIN32
1159 if (flags & EVFLAG_FORKCHECK)
1160 curpid = getpid ();
1161#endif
1162
1163 if (!(flags & EVFLAG_NOENV)
1164 && !enable_secure ()
1165 && getenv ("LIBEV_FLAGS"))
760 methods = atoi (getenv ("LIBEV_METHODS")); 1166 flags = atoi (getenv ("LIBEV_FLAGS"));
761 else
762 methods = EVMETHOD_ANY;
763 1167
764 method = 0; 1168 if (!(flags & 0x0000ffffUL))
765#if EV_USE_WIN32 1169 flags |= ev_recommended_backends ();
766 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1170
1171#if EV_USE_PORT
1172 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
767#endif 1173#endif
768#if EV_USE_KQUEUE 1174#if EV_USE_KQUEUE
769 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1175 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770#endif 1176#endif
771#if EV_USE_EPOLL 1177#if EV_USE_EPOLL
772 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1178 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773#endif 1179#endif
774#if EV_USE_POLL 1180#if EV_USE_POLL
775 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1181 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776#endif 1182#endif
777#if EV_USE_SELECT 1183#if EV_USE_SELECT
778 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1184 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779#endif 1185#endif
780 1186
781 ev_init (&sigev, sigcb); 1187 ev_init (&pipeev, pipecb);
782 ev_set_priority (&sigev, EV_MAXPRI); 1188 ev_set_priority (&pipeev, EV_MAXPRI);
783 } 1189 }
784} 1190}
785 1191
786void 1192static void noinline
787loop_destroy (EV_P) 1193loop_destroy (EV_P)
788{ 1194{
789 int i; 1195 int i;
790 1196
1197 if (ev_is_active (&pipeev))
1198 {
1199 ev_ref (EV_A); /* signal watcher */
1200 ev_io_stop (EV_A_ &pipeev);
1201
1202#if EV_USE_EVENTFD
1203 if (evfd >= 0)
1204 close (evfd);
1205#endif
1206
1207 if (evpipe [0] >= 0)
1208 {
1209 close (evpipe [0]);
1210 close (evpipe [1]);
1211 }
1212 }
1213
791#if EV_USE_WIN32 1214#if EV_USE_INOTIFY
792 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1215 if (fs_fd >= 0)
1216 close (fs_fd);
1217#endif
1218
1219 if (backend_fd >= 0)
1220 close (backend_fd);
1221
1222#if EV_USE_PORT
1223 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
793#endif 1224#endif
794#if EV_USE_KQUEUE 1225#if EV_USE_KQUEUE
795 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1226 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796#endif 1227#endif
797#if EV_USE_EPOLL 1228#if EV_USE_EPOLL
798 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1229 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799#endif 1230#endif
800#if EV_USE_POLL 1231#if EV_USE_POLL
801 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1232 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802#endif 1233#endif
803#if EV_USE_SELECT 1234#if EV_USE_SELECT
804 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1235 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805#endif 1236#endif
806 1237
807 for (i = NUMPRI; i--; ) 1238 for (i = NUMPRI; i--; )
1239 {
808 array_free (pending, [i]); 1240 array_free (pending, [i]);
1241#if EV_IDLE_ENABLE
1242 array_free (idle, [i]);
1243#endif
1244 }
1245
1246 ev_free (anfds); anfdmax = 0;
809 1247
810 /* have to use the microsoft-never-gets-it-right macro */ 1248 /* have to use the microsoft-never-gets-it-right macro */
811 array_free_microshit (fdchange); 1249 array_free (fdchange, EMPTY);
812 array_free_microshit (timer); 1250 array_free (timer, EMPTY);
813#if EV_PERIODICS 1251#if EV_PERIODIC_ENABLE
814 array_free_microshit (periodic); 1252 array_free (periodic, EMPTY);
815#endif 1253#endif
816 array_free_microshit (idle); 1254#if EV_FORK_ENABLE
817 array_free_microshit (prepare); 1255 array_free (fork, EMPTY);
818 array_free_microshit (check); 1256#endif
1257 array_free (prepare, EMPTY);
1258 array_free (check, EMPTY);
1259#if EV_ASYNC_ENABLE
1260 array_free (async, EMPTY);
1261#endif
819 1262
820 method = 0; 1263 backend = 0;
821} 1264}
822 1265
823static void 1266void inline_size infy_fork (EV_P);
1267
1268void inline_size
824loop_fork (EV_P) 1269loop_fork (EV_P)
825{ 1270{
1271#if EV_USE_PORT
1272 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273#endif
1274#if EV_USE_KQUEUE
1275 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1276#endif
826#if EV_USE_EPOLL 1277#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1278 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828#endif 1279#endif
829#if EV_USE_KQUEUE 1280#if EV_USE_INOTIFY
830 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1281 infy_fork (EV_A);
831#endif 1282#endif
832 1283
833 if (ev_is_active (&sigev)) 1284 if (ev_is_active (&pipeev))
834 { 1285 {
835 /* default loop */ 1286 /* this "locks" the handlers against writing to the pipe */
1287 /* while we modify the fd vars */
1288 gotsig = 1;
1289#if EV_ASYNC_ENABLE
1290 gotasync = 1;
1291#endif
836 1292
837 ev_ref (EV_A); 1293 ev_ref (EV_A);
838 ev_io_stop (EV_A_ &sigev); 1294 ev_io_stop (EV_A_ &pipeev);
1295
1296#if EV_USE_EVENTFD
1297 if (evfd >= 0)
1298 close (evfd);
1299#endif
1300
1301 if (evpipe [0] >= 0)
1302 {
839 close (sigpipe [0]); 1303 close (evpipe [0]);
840 close (sigpipe [1]); 1304 close (evpipe [1]);
1305 }
841 1306
842 while (pipe (sigpipe))
843 syserr ("(libev) error creating pipe");
844
845 siginit (EV_A); 1307 evpipe_init (EV_A);
1308 /* now iterate over everything, in case we missed something */
1309 pipecb (EV_A_ &pipeev, EV_READ);
846 } 1310 }
847 1311
848 postfork = 0; 1312 postfork = 0;
849} 1313}
850 1314
851#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
852struct ev_loop * 1316struct ev_loop *
853ev_loop_new (int methods) 1317ev_loop_new (unsigned int flags)
854{ 1318{
855 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1319 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
856 1320
857 memset (loop, 0, sizeof (struct ev_loop)); 1321 memset (loop, 0, sizeof (struct ev_loop));
858 1322
859 loop_init (EV_A_ methods); 1323 loop_init (EV_A_ flags);
860 1324
861 if (ev_method (EV_A)) 1325 if (ev_backend (EV_A))
862 return loop; 1326 return loop;
863 1327
864 return 0; 1328 return 0;
865} 1329}
866 1330
… …
872} 1336}
873 1337
874void 1338void
875ev_loop_fork (EV_P) 1339ev_loop_fork (EV_P)
876{ 1340{
877 postfork = 1; 1341 postfork = 1; /* must be in line with ev_default_fork */
878} 1342}
879 1343
880#endif 1344#endif
881 1345
882#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
883struct ev_loop * 1347struct ev_loop *
1348ev_default_loop_init (unsigned int flags)
884#else 1349#else
885int 1350int
1351ev_default_loop (unsigned int flags)
886#endif 1352#endif
887ev_default_loop (int methods)
888{ 1353{
889 if (sigpipe [0] == sigpipe [1])
890 if (pipe (sigpipe))
891 return 0;
892
893 if (!default_loop) 1354 if (!ev_default_loop_ptr)
894 { 1355 {
895#if EV_MULTIPLICITY 1356#if EV_MULTIPLICITY
896 struct ev_loop *loop = default_loop = &default_loop_struct; 1357 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897#else 1358#else
898 default_loop = 1; 1359 ev_default_loop_ptr = 1;
899#endif 1360#endif
900 1361
901 loop_init (EV_A_ methods); 1362 loop_init (EV_A_ flags);
902 1363
903 if (ev_method (EV_A)) 1364 if (ev_backend (EV_A))
904 { 1365 {
905 siginit (EV_A);
906
907#ifndef WIN32 1366#ifndef _WIN32
908 ev_signal_init (&childev, childcb, SIGCHLD); 1367 ev_signal_init (&childev, childcb, SIGCHLD);
909 ev_set_priority (&childev, EV_MAXPRI); 1368 ev_set_priority (&childev, EV_MAXPRI);
910 ev_signal_start (EV_A_ &childev); 1369 ev_signal_start (EV_A_ &childev);
911 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1370 ev_unref (EV_A); /* child watcher should not keep loop alive */
912#endif 1371#endif
913 } 1372 }
914 else 1373 else
915 default_loop = 0; 1374 ev_default_loop_ptr = 0;
916 } 1375 }
917 1376
918 return default_loop; 1377 return ev_default_loop_ptr;
919} 1378}
920 1379
921void 1380void
922ev_default_destroy (void) 1381ev_default_destroy (void)
923{ 1382{
924#if EV_MULTIPLICITY 1383#if EV_MULTIPLICITY
925 struct ev_loop *loop = default_loop; 1384 struct ev_loop *loop = ev_default_loop_ptr;
926#endif 1385#endif
927 1386
928#ifndef WIN32 1387#ifndef _WIN32
929 ev_ref (EV_A); /* child watcher */ 1388 ev_ref (EV_A); /* child watcher */
930 ev_signal_stop (EV_A_ &childev); 1389 ev_signal_stop (EV_A_ &childev);
931#endif 1390#endif
932 1391
933 ev_ref (EV_A); /* signal watcher */
934 ev_io_stop (EV_A_ &sigev);
935
936 close (sigpipe [0]); sigpipe [0] = 0;
937 close (sigpipe [1]); sigpipe [1] = 0;
938
939 loop_destroy (EV_A); 1392 loop_destroy (EV_A);
940} 1393}
941 1394
942void 1395void
943ev_default_fork (void) 1396ev_default_fork (void)
944{ 1397{
945#if EV_MULTIPLICITY 1398#if EV_MULTIPLICITY
946 struct ev_loop *loop = default_loop; 1399 struct ev_loop *loop = ev_default_loop_ptr;
947#endif 1400#endif
948 1401
949 if (method) 1402 if (backend)
950 postfork = 1; 1403 postfork = 1; /* must be in line with ev_loop_fork */
951} 1404}
952 1405
953/*****************************************************************************/ 1406/*****************************************************************************/
954 1407
955static int 1408void
956any_pending (EV_P) 1409ev_invoke (EV_P_ void *w, int revents)
957{ 1410{
958 int pri; 1411 EV_CB_INVOKE ((W)w, revents);
959
960 for (pri = NUMPRI; pri--; )
961 if (pendingcnt [pri])
962 return 1;
963
964 return 0;
965} 1412}
966 1413
967static void 1414void inline_speed
968call_pending (EV_P) 1415call_pending (EV_P)
969{ 1416{
970 int pri; 1417 int pri;
971 1418
972 for (pri = NUMPRI; pri--; ) 1419 for (pri = NUMPRI; pri--; )
973 while (pendingcnt [pri]) 1420 while (pendingcnt [pri])
974 { 1421 {
975 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1422 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976 1423
977 if (p->w) 1424 if (expect_true (p->w))
978 { 1425 {
1426 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1427
979 p->w->pending = 0; 1428 p->w->pending = 0;
980 EV_CB_INVOKE (p->w, p->events); 1429 EV_CB_INVOKE (p->w, p->events);
981 } 1430 }
982 } 1431 }
983} 1432}
984 1433
985static void 1434void inline_size
986timers_reify (EV_P) 1435timers_reify (EV_P)
987{ 1436{
988 while (timercnt && ((WT)timers [0])->at <= mn_now) 1437 while (timercnt && ((WT)timers [0])->at <= mn_now)
989 { 1438 {
990 struct ev_timer *w = timers [0]; 1439 ev_timer *w = (ev_timer *)timers [0];
991 1440
992 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1441 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
993 1442
994 /* first reschedule or stop timer */ 1443 /* first reschedule or stop timer */
995 if (w->repeat) 1444 if (w->repeat)
996 { 1445 {
997 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1446 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
998 1447
999 ((WT)w)->at += w->repeat; 1448 ((WT)w)->at += w->repeat;
1000 if (((WT)w)->at < mn_now) 1449 if (((WT)w)->at < mn_now)
1001 ((WT)w)->at = mn_now; 1450 ((WT)w)->at = mn_now;
1002 1451
1003 downheap ((WT *)timers, timercnt, 0); 1452 downheap (timers, timercnt, 0);
1004 } 1453 }
1005 else 1454 else
1006 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1455 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1007 1456
1008 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1457 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009 } 1458 }
1010} 1459}
1011 1460
1012#if EV_PERIODICS 1461#if EV_PERIODIC_ENABLE
1013static void 1462void inline_size
1014periodics_reify (EV_P) 1463periodics_reify (EV_P)
1015{ 1464{
1016 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1465 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017 { 1466 {
1018 struct ev_periodic *w = periodics [0]; 1467 ev_periodic *w = (ev_periodic *)periodics [0];
1019 1468
1020 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1469 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1021 1470
1022 /* first reschedule or stop timer */ 1471 /* first reschedule or stop timer */
1023 if (w->reschedule_cb) 1472 if (w->reschedule_cb)
1024 { 1473 {
1025 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1474 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1026
1027 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1475 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028 downheap ((WT *)periodics, periodiccnt, 0); 1476 downheap (periodics, periodiccnt, 0);
1029 } 1477 }
1030 else if (w->interval) 1478 else if (w->interval)
1031 { 1479 {
1032 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1480 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1481 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1033 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1482 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1034 downheap ((WT *)periodics, periodiccnt, 0); 1483 downheap (periodics, periodiccnt, 0);
1035 } 1484 }
1036 else 1485 else
1037 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1486 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1038 1487
1039 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1488 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040 } 1489 }
1041} 1490}
1042 1491
1043static void 1492static void noinline
1044periodics_reschedule (EV_P) 1493periodics_reschedule (EV_P)
1045{ 1494{
1046 int i; 1495 int i;
1047 1496
1048 /* adjust periodics after time jump */ 1497 /* adjust periodics after time jump */
1049 for (i = 0; i < periodiccnt; ++i) 1498 for (i = 0; i < periodiccnt; ++i)
1050 { 1499 {
1051 struct ev_periodic *w = periodics [i]; 1500 ev_periodic *w = (ev_periodic *)periodics [i];
1052 1501
1053 if (w->reschedule_cb) 1502 if (w->reschedule_cb)
1054 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1503 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055 else if (w->interval) 1504 else if (w->interval)
1056 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1505 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1057 } 1506 }
1058 1507
1059 /* now rebuild the heap */ 1508 /* now rebuild the heap */
1060 for (i = periodiccnt >> 1; i--; ) 1509 for (i = periodiccnt >> 1; i--; )
1061 downheap ((WT *)periodics, periodiccnt, i); 1510 downheap (periodics, periodiccnt, i);
1062} 1511}
1063#endif 1512#endif
1064 1513
1065inline int 1514#if EV_IDLE_ENABLE
1066time_update_monotonic (EV_P) 1515void inline_size
1516idle_reify (EV_P)
1067{ 1517{
1518 if (expect_false (idleall))
1519 {
1520 int pri;
1521
1522 for (pri = NUMPRI; pri--; )
1523 {
1524 if (pendingcnt [pri])
1525 break;
1526
1527 if (idlecnt [pri])
1528 {
1529 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1530 break;
1531 }
1532 }
1533 }
1534}
1535#endif
1536
1537void inline_speed
1538time_update (EV_P_ ev_tstamp max_block)
1539{
1540 int i;
1541
1542#if EV_USE_MONOTONIC
1543 if (expect_true (have_monotonic))
1544 {
1545 ev_tstamp odiff = rtmn_diff;
1546
1068 mn_now = get_clock (); 1547 mn_now = get_clock ();
1069 1548
1549 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1550 /* interpolate in the meantime */
1070 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1551 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071 { 1552 {
1072 ev_rt_now = rtmn_diff + mn_now; 1553 ev_rt_now = rtmn_diff + mn_now;
1073 return 0; 1554 return;
1074 } 1555 }
1075 else 1556
1076 {
1077 now_floor = mn_now; 1557 now_floor = mn_now;
1078 ev_rt_now = ev_time (); 1558 ev_rt_now = ev_time ();
1079 return 1;
1080 }
1081}
1082 1559
1083static void 1560 /* loop a few times, before making important decisions.
1084time_update (EV_P) 1561 * on the choice of "4": one iteration isn't enough,
1085{ 1562 * in case we get preempted during the calls to
1086 int i; 1563 * ev_time and get_clock. a second call is almost guaranteed
1087 1564 * to succeed in that case, though. and looping a few more times
1088#if EV_USE_MONOTONIC 1565 * doesn't hurt either as we only do this on time-jumps or
1089 if (expect_true (have_monotonic)) 1566 * in the unlikely event of having been preempted here.
1090 { 1567 */
1091 if (time_update_monotonic (EV_A)) 1568 for (i = 4; --i; )
1092 { 1569 {
1093 ev_tstamp odiff = rtmn_diff;
1094
1095 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1096 {
1097 rtmn_diff = ev_rt_now - mn_now; 1570 rtmn_diff = ev_rt_now - mn_now;
1098 1571
1099 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1572 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100 return; /* all is well */ 1573 return; /* all is well */
1101 1574
1102 ev_rt_now = ev_time (); 1575 ev_rt_now = ev_time ();
1103 mn_now = get_clock (); 1576 mn_now = get_clock ();
1104 now_floor = mn_now; 1577 now_floor = mn_now;
1105 } 1578 }
1106 1579
1107# if EV_PERIODICS 1580# if EV_PERIODIC_ENABLE
1581 periodics_reschedule (EV_A);
1582# endif
1583 /* no timer adjustment, as the monotonic clock doesn't jump */
1584 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585 }
1586 else
1587#endif
1588 {
1589 ev_rt_now = ev_time ();
1590
1591 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592 {
1593#if EV_PERIODIC_ENABLE
1108 periodics_reschedule (EV_A); 1594 periodics_reschedule (EV_A);
1109# endif 1595#endif
1110 /* no timer adjustment, as the monotonic clock doesn't jump */
1111 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1112 }
1113 }
1114 else
1115#endif
1116 {
1117 ev_rt_now = ev_time ();
1118
1119 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1120 {
1121#if EV_PERIODICS
1122 periodics_reschedule (EV_A);
1123#endif
1124
1125 /* adjust timers. this is easy, as the offset is the same for all */ 1596 /* adjust timers. this is easy, as the offset is the same for all of them */
1126 for (i = 0; i < timercnt; ++i) 1597 for (i = 0; i < timercnt; ++i)
1127 ((WT)timers [i])->at += ev_rt_now - mn_now; 1598 ((WT)timers [i])->at += ev_rt_now - mn_now;
1128 } 1599 }
1129 1600
1130 mn_now = ev_rt_now; 1601 mn_now = ev_rt_now;
… …
1146static int loop_done; 1617static int loop_done;
1147 1618
1148void 1619void
1149ev_loop (EV_P_ int flags) 1620ev_loop (EV_P_ int flags)
1150{ 1621{
1151 double block; 1622 loop_done = EVUNLOOP_CANCEL;
1152 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1623
1624 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1153 1625
1154 do 1626 do
1155 { 1627 {
1628#ifndef _WIN32
1629 if (expect_false (curpid)) /* penalise the forking check even more */
1630 if (expect_false (getpid () != curpid))
1631 {
1632 curpid = getpid ();
1633 postfork = 1;
1634 }
1635#endif
1636
1637#if EV_FORK_ENABLE
1638 /* we might have forked, so queue fork handlers */
1639 if (expect_false (postfork))
1640 if (forkcnt)
1641 {
1642 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643 call_pending (EV_A);
1644 }
1645#endif
1646
1156 /* queue check watchers (and execute them) */ 1647 /* queue prepare watchers (and execute them) */
1157 if (expect_false (preparecnt)) 1648 if (expect_false (preparecnt))
1158 { 1649 {
1159 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1650 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1160 call_pending (EV_A); 1651 call_pending (EV_A);
1161 } 1652 }
1162 1653
1654 if (expect_false (!activecnt))
1655 break;
1656
1163 /* we might have forked, so reify kernel state if necessary */ 1657 /* we might have forked, so reify kernel state if necessary */
1164 if (expect_false (postfork)) 1658 if (expect_false (postfork))
1165 loop_fork (EV_A); 1659 loop_fork (EV_A);
1166 1660
1167 /* update fd-related kernel structures */ 1661 /* update fd-related kernel structures */
1168 fd_reify (EV_A); 1662 fd_reify (EV_A);
1169 1663
1170 /* calculate blocking time */ 1664 /* calculate blocking time */
1665 {
1666 ev_tstamp waittime = 0.;
1667 ev_tstamp sleeptime = 0.;
1171 1668
1172 /* we only need this for !monotonic clock or timers, but as we basically 1669 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1173 always have timers, we just calculate it always */
1174#if EV_USE_MONOTONIC
1175 if (expect_true (have_monotonic))
1176 time_update_monotonic (EV_A);
1177 else
1178#endif
1179 { 1670 {
1180 ev_rt_now = ev_time (); 1671 /* update time to cancel out callback processing overhead */
1181 mn_now = ev_rt_now; 1672 time_update (EV_A_ 1e100);
1182 }
1183 1673
1184 if (flags & EVLOOP_NONBLOCK || idlecnt)
1185 block = 0.;
1186 else
1187 {
1188 block = MAX_BLOCKTIME; 1674 waittime = MAX_BLOCKTIME;
1189 1675
1190 if (timercnt) 1676 if (timercnt)
1191 { 1677 {
1192 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1678 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193 if (block > to) block = to; 1679 if (waittime > to) waittime = to;
1194 } 1680 }
1195 1681
1196#if EV_PERIODICS 1682#if EV_PERIODIC_ENABLE
1197 if (periodiccnt) 1683 if (periodiccnt)
1198 { 1684 {
1199 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1685 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1200 if (block > to) block = to; 1686 if (waittime > to) waittime = to;
1201 } 1687 }
1202#endif 1688#endif
1203 1689
1204 if (block < 0.) block = 0.; 1690 if (expect_false (waittime < timeout_blocktime))
1691 waittime = timeout_blocktime;
1692
1693 sleeptime = waittime - backend_fudge;
1694
1695 if (expect_true (sleeptime > io_blocktime))
1696 sleeptime = io_blocktime;
1697
1698 if (sleeptime)
1699 {
1700 ev_sleep (sleeptime);
1701 waittime -= sleeptime;
1702 }
1205 } 1703 }
1206 1704
1207 method_poll (EV_A_ block); 1705 ++loop_count;
1706 backend_poll (EV_A_ waittime);
1208 1707
1209 /* update ev_rt_now, do magic */ 1708 /* update ev_rt_now, do magic */
1210 time_update (EV_A); 1709 time_update (EV_A_ waittime + sleeptime);
1710 }
1211 1711
1212 /* queue pending timers and reschedule them */ 1712 /* queue pending timers and reschedule them */
1213 timers_reify (EV_A); /* relative timers called last */ 1713 timers_reify (EV_A); /* relative timers called last */
1214#if EV_PERIODICS 1714#if EV_PERIODIC_ENABLE
1215 periodics_reify (EV_A); /* absolute timers called first */ 1715 periodics_reify (EV_A); /* absolute timers called first */
1216#endif 1716#endif
1217 1717
1718#if EV_IDLE_ENABLE
1218 /* queue idle watchers unless io or timers are pending */ 1719 /* queue idle watchers unless other events are pending */
1219 if (idlecnt && !any_pending (EV_A)) 1720 idle_reify (EV_A);
1220 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1721#endif
1221 1722
1222 /* queue check watchers, to be executed first */ 1723 /* queue check watchers, to be executed first */
1223 if (checkcnt) 1724 if (expect_false (checkcnt))
1224 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1725 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225 1726
1226 call_pending (EV_A); 1727 call_pending (EV_A);
1227 } 1728 }
1228 while (activecnt && !loop_done); 1729 while (expect_true (
1730 activecnt
1731 && !loop_done
1732 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1733 ));
1229 1734
1230 if (loop_done != 2) 1735 if (loop_done == EVUNLOOP_ONE)
1231 loop_done = 0; 1736 loop_done = EVUNLOOP_CANCEL;
1232} 1737}
1233 1738
1234void 1739void
1235ev_unloop (EV_P_ int how) 1740ev_unloop (EV_P_ int how)
1236{ 1741{
1237 loop_done = how; 1742 loop_done = how;
1238} 1743}
1239 1744
1240/*****************************************************************************/ 1745/*****************************************************************************/
1241 1746
1242inline void 1747void inline_size
1243wlist_add (WL *head, WL elem) 1748wlist_add (WL *head, WL elem)
1244{ 1749{
1245 elem->next = *head; 1750 elem->next = *head;
1246 *head = elem; 1751 *head = elem;
1247} 1752}
1248 1753
1249inline void 1754void inline_size
1250wlist_del (WL *head, WL elem) 1755wlist_del (WL *head, WL elem)
1251{ 1756{
1252 while (*head) 1757 while (*head)
1253 { 1758 {
1254 if (*head == elem) 1759 if (*head == elem)
… …
1259 1764
1260 head = &(*head)->next; 1765 head = &(*head)->next;
1261 } 1766 }
1262} 1767}
1263 1768
1264inline void 1769void inline_speed
1265ev_clear_pending (EV_P_ W w) 1770clear_pending (EV_P_ W w)
1266{ 1771{
1267 if (w->pending) 1772 if (w->pending)
1268 { 1773 {
1269 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1774 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270 w->pending = 0; 1775 w->pending = 0;
1271 } 1776 }
1272} 1777}
1273 1778
1274inline void 1779int
1780ev_clear_pending (EV_P_ void *w)
1781{
1782 W w_ = (W)w;
1783 int pending = w_->pending;
1784
1785 if (expect_true (pending))
1786 {
1787 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1788 w_->pending = 0;
1789 p->w = 0;
1790 return p->events;
1791 }
1792 else
1793 return 0;
1794}
1795
1796void inline_size
1797pri_adjust (EV_P_ W w)
1798{
1799 int pri = w->priority;
1800 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802 w->priority = pri;
1803}
1804
1805void inline_speed
1275ev_start (EV_P_ W w, int active) 1806ev_start (EV_P_ W w, int active)
1276{ 1807{
1277 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1808 pri_adjust (EV_A_ w);
1278 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279
1280 w->active = active; 1809 w->active = active;
1281 ev_ref (EV_A); 1810 ev_ref (EV_A);
1282} 1811}
1283 1812
1284inline void 1813void inline_size
1285ev_stop (EV_P_ W w) 1814ev_stop (EV_P_ W w)
1286{ 1815{
1287 ev_unref (EV_A); 1816 ev_unref (EV_A);
1288 w->active = 0; 1817 w->active = 0;
1289} 1818}
1290 1819
1291/*****************************************************************************/ 1820/*****************************************************************************/
1292 1821
1293void 1822void noinline
1294ev_io_start (EV_P_ struct ev_io *w) 1823ev_io_start (EV_P_ ev_io *w)
1295{ 1824{
1296 int fd = w->fd; 1825 int fd = w->fd;
1297 1826
1298 if (ev_is_active (w)) 1827 if (expect_false (ev_is_active (w)))
1299 return; 1828 return;
1300 1829
1301 assert (("ev_io_start called with negative fd", fd >= 0)); 1830 assert (("ev_io_start called with negative fd", fd >= 0));
1302 1831
1303 ev_start (EV_A_ (W)w, 1); 1832 ev_start (EV_A_ (W)w, 1);
1304 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1833 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1305 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1834 wlist_add (&anfds[fd].head, (WL)w);
1306 1835
1307 fd_change (EV_A_ fd); 1836 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1837 w->events &= ~EV_IOFDSET;
1308} 1838}
1309 1839
1310void 1840void noinline
1311ev_io_stop (EV_P_ struct ev_io *w) 1841ev_io_stop (EV_P_ ev_io *w)
1312{ 1842{
1313 ev_clear_pending (EV_A_ (W)w); 1843 clear_pending (EV_A_ (W)w);
1314 if (!ev_is_active (w)) 1844 if (expect_false (!ev_is_active (w)))
1315 return; 1845 return;
1316 1846
1317 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1847 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318 1848
1319 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1849 wlist_del (&anfds[w->fd].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1850 ev_stop (EV_A_ (W)w);
1321 1851
1322 fd_change (EV_A_ w->fd); 1852 fd_change (EV_A_ w->fd, 1);
1323} 1853}
1324 1854
1325void 1855void noinline
1326ev_timer_start (EV_P_ struct ev_timer *w) 1856ev_timer_start (EV_P_ ev_timer *w)
1857{
1858 if (expect_false (ev_is_active (w)))
1859 return;
1860
1861 ((WT)w)->at += mn_now;
1862
1863 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864
1865 ev_start (EV_A_ (W)w, ++timercnt);
1866 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1867 timers [timercnt - 1] = (WT)w;
1868 upheap (timers, timercnt - 1);
1869
1870 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1871}
1872
1873void noinline
1874ev_timer_stop (EV_P_ ev_timer *w)
1875{
1876 clear_pending (EV_A_ (W)w);
1877 if (expect_false (!ev_is_active (w)))
1878 return;
1879
1880 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1881
1882 {
1883 int active = ((W)w)->active;
1884
1885 if (expect_true (--active < --timercnt))
1886 {
1887 timers [active] = timers [timercnt];
1888 adjustheap (timers, timercnt, active);
1889 }
1890 }
1891
1892 ((WT)w)->at -= mn_now;
1893
1894 ev_stop (EV_A_ (W)w);
1895}
1896
1897void noinline
1898ev_timer_again (EV_P_ ev_timer *w)
1327{ 1899{
1328 if (ev_is_active (w)) 1900 if (ev_is_active (w))
1329 return;
1330
1331 ((WT)w)->at += mn_now;
1332
1333 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334
1335 ev_start (EV_A_ (W)w, ++timercnt);
1336 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1337 timers [timercnt - 1] = w;
1338 upheap ((WT *)timers, timercnt - 1);
1339
1340 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341}
1342
1343void
1344ev_timer_stop (EV_P_ struct ev_timer *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (!ev_is_active (w))
1348 return;
1349
1350 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1352 if (((W)w)->active < timercnt--)
1353 {
1354 timers [((W)w)->active - 1] = timers [timercnt];
1355 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356 }
1357
1358 ((WT)w)->at -= mn_now;
1359
1360 ev_stop (EV_A_ (W)w);
1361}
1362
1363void
1364ev_timer_again (EV_P_ struct ev_timer *w)
1365{
1366 if (ev_is_active (w))
1367 { 1901 {
1368 if (w->repeat) 1902 if (w->repeat)
1903 {
1904 ((WT)w)->at = mn_now + w->repeat;
1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1905 adjustheap (timers, timercnt, ((W)w)->active - 1);
1906 }
1370 else 1907 else
1371 ev_timer_stop (EV_A_ w); 1908 ev_timer_stop (EV_A_ w);
1372 } 1909 }
1373 else if (w->repeat) 1910 else if (w->repeat)
1911 {
1912 w->at = w->repeat;
1374 ev_timer_start (EV_A_ w); 1913 ev_timer_start (EV_A_ w);
1914 }
1375} 1915}
1376 1916
1377#if EV_PERIODICS 1917#if EV_PERIODIC_ENABLE
1378void 1918void noinline
1379ev_periodic_start (EV_P_ struct ev_periodic *w) 1919ev_periodic_start (EV_P_ ev_periodic *w)
1380{ 1920{
1381 if (ev_is_active (w)) 1921 if (expect_false (ev_is_active (w)))
1382 return; 1922 return;
1383 1923
1384 if (w->reschedule_cb) 1924 if (w->reschedule_cb)
1385 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1925 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386 else if (w->interval) 1926 else if (w->interval)
1387 { 1927 {
1388 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1928 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1389 /* this formula differs from the one in periodic_reify because we do not always round up */ 1929 /* this formula differs from the one in periodic_reify because we do not always round up */
1390 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1930 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1391 } 1931 }
1932 else
1933 ((WT)w)->at = w->offset;
1392 1934
1393 ev_start (EV_A_ (W)w, ++periodiccnt); 1935 ev_start (EV_A_ (W)w, ++periodiccnt);
1394 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1936 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1395 periodics [periodiccnt - 1] = w; 1937 periodics [periodiccnt - 1] = (WT)w;
1396 upheap ((WT *)periodics, periodiccnt - 1); 1938 upheap (periodics, periodiccnt - 1);
1397 1939
1398 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1940 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1399} 1941}
1400 1942
1401void 1943void noinline
1402ev_periodic_stop (EV_P_ struct ev_periodic *w) 1944ev_periodic_stop (EV_P_ ev_periodic *w)
1403{ 1945{
1404 ev_clear_pending (EV_A_ (W)w); 1946 clear_pending (EV_A_ (W)w);
1405 if (!ev_is_active (w)) 1947 if (expect_false (!ev_is_active (w)))
1406 return; 1948 return;
1407 1949
1408 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1950 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1409 1951
1410 if (((W)w)->active < periodiccnt--) 1952 {
1953 int active = ((W)w)->active;
1954
1955 if (expect_true (--active < --periodiccnt))
1411 { 1956 {
1412 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1957 periodics [active] = periodics [periodiccnt];
1413 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1958 adjustheap (periodics, periodiccnt, active);
1414 } 1959 }
1960 }
1415 1961
1416 ev_stop (EV_A_ (W)w); 1962 ev_stop (EV_A_ (W)w);
1417} 1963}
1418 1964
1419void 1965void noinline
1420ev_periodic_again (EV_P_ struct ev_periodic *w) 1966ev_periodic_again (EV_P_ ev_periodic *w)
1421{ 1967{
1422 /* TODO: use adjustheap and recalculation */ 1968 /* TODO: use adjustheap and recalculation */
1423 ev_periodic_stop (EV_A_ w); 1969 ev_periodic_stop (EV_A_ w);
1424 ev_periodic_start (EV_A_ w); 1970 ev_periodic_start (EV_A_ w);
1425} 1971}
1426#endif 1972#endif
1427 1973
1428void
1429ev_idle_start (EV_P_ struct ev_idle *w)
1430{
1431 if (ev_is_active (w))
1432 return;
1433
1434 ev_start (EV_A_ (W)w, ++idlecnt);
1435 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436 idles [idlecnt - 1] = w;
1437}
1438
1439void
1440ev_idle_stop (EV_P_ struct ev_idle *w)
1441{
1442 ev_clear_pending (EV_A_ (W)w);
1443 if (ev_is_active (w))
1444 return;
1445
1446 idles [((W)w)->active - 1] = idles [--idlecnt];
1447 ev_stop (EV_A_ (W)w);
1448}
1449
1450void
1451ev_prepare_start (EV_P_ struct ev_prepare *w)
1452{
1453 if (ev_is_active (w))
1454 return;
1455
1456 ev_start (EV_A_ (W)w, ++preparecnt);
1457 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458 prepares [preparecnt - 1] = w;
1459}
1460
1461void
1462ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463{
1464 ev_clear_pending (EV_A_ (W)w);
1465 if (ev_is_active (w))
1466 return;
1467
1468 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469 ev_stop (EV_A_ (W)w);
1470}
1471
1472void
1473ev_check_start (EV_P_ struct ev_check *w)
1474{
1475 if (ev_is_active (w))
1476 return;
1477
1478 ev_start (EV_A_ (W)w, ++checkcnt);
1479 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480 checks [checkcnt - 1] = w;
1481}
1482
1483void
1484ev_check_stop (EV_P_ struct ev_check *w)
1485{
1486 ev_clear_pending (EV_A_ (W)w);
1487 if (!ev_is_active (w))
1488 return;
1489
1490 checks [((W)w)->active - 1] = checks [--checkcnt];
1491 ev_stop (EV_A_ (W)w);
1492}
1493
1494#ifndef SA_RESTART 1974#ifndef SA_RESTART
1495# define SA_RESTART 0 1975# define SA_RESTART 0
1496#endif 1976#endif
1497 1977
1498void 1978void noinline
1499ev_signal_start (EV_P_ struct ev_signal *w) 1979ev_signal_start (EV_P_ ev_signal *w)
1500{ 1980{
1501#if EV_MULTIPLICITY 1981#if EV_MULTIPLICITY
1502 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1982 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503#endif 1983#endif
1504 if (ev_is_active (w)) 1984 if (expect_false (ev_is_active (w)))
1505 return; 1985 return;
1506 1986
1507 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1987 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1508 1988
1989 evpipe_init (EV_A);
1990
1991 {
1992#ifndef _WIN32
1993 sigset_t full, prev;
1994 sigfillset (&full);
1995 sigprocmask (SIG_SETMASK, &full, &prev);
1996#endif
1997
1998 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1999
2000#ifndef _WIN32
2001 sigprocmask (SIG_SETMASK, &prev, 0);
2002#endif
2003 }
2004
1509 ev_start (EV_A_ (W)w, 1); 2005 ev_start (EV_A_ (W)w, 1);
1510 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2006 wlist_add (&signals [w->signum - 1].head, (WL)w);
1512 2007
1513 if (!((WL)w)->next) 2008 if (!((WL)w)->next)
1514 { 2009 {
1515#if WIN32 2010#if _WIN32
1516 signal (w->signum, sighandler); 2011 signal (w->signum, ev_sighandler);
1517#else 2012#else
1518 struct sigaction sa; 2013 struct sigaction sa;
1519 sa.sa_handler = sighandler; 2014 sa.sa_handler = ev_sighandler;
1520 sigfillset (&sa.sa_mask); 2015 sigfillset (&sa.sa_mask);
1521 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2016 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1522 sigaction (w->signum, &sa, 0); 2017 sigaction (w->signum, &sa, 0);
1523#endif 2018#endif
1524 } 2019 }
1525} 2020}
1526 2021
1527void 2022void noinline
1528ev_signal_stop (EV_P_ struct ev_signal *w) 2023ev_signal_stop (EV_P_ ev_signal *w)
1529{ 2024{
1530 ev_clear_pending (EV_A_ (W)w); 2025 clear_pending (EV_A_ (W)w);
1531 if (!ev_is_active (w)) 2026 if (expect_false (!ev_is_active (w)))
1532 return; 2027 return;
1533 2028
1534 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2029 wlist_del (&signals [w->signum - 1].head, (WL)w);
1535 ev_stop (EV_A_ (W)w); 2030 ev_stop (EV_A_ (W)w);
1536 2031
1537 if (!signals [w->signum - 1].head) 2032 if (!signals [w->signum - 1].head)
1538 signal (w->signum, SIG_DFL); 2033 signal (w->signum, SIG_DFL);
1539} 2034}
1540 2035
1541void 2036void
1542ev_child_start (EV_P_ struct ev_child *w) 2037ev_child_start (EV_P_ ev_child *w)
1543{ 2038{
1544#if EV_MULTIPLICITY 2039#if EV_MULTIPLICITY
1545 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2040 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1546#endif 2041#endif
1547 if (ev_is_active (w)) 2042 if (expect_false (ev_is_active (w)))
1548 return; 2043 return;
1549 2044
1550 ev_start (EV_A_ (W)w, 1); 2045 ev_start (EV_A_ (W)w, 1);
1551 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2046 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1552} 2047}
1553 2048
1554void 2049void
1555ev_child_stop (EV_P_ struct ev_child *w) 2050ev_child_stop (EV_P_ ev_child *w)
1556{ 2051{
1557 ev_clear_pending (EV_A_ (W)w); 2052 clear_pending (EV_A_ (W)w);
1558 if (!ev_is_active (w)) 2053 if (expect_false (!ev_is_active (w)))
1559 return; 2054 return;
1560 2055
1561 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2056 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1562 ev_stop (EV_A_ (W)w); 2057 ev_stop (EV_A_ (W)w);
1563} 2058}
1564 2059
2060#if EV_STAT_ENABLE
2061
2062# ifdef _WIN32
2063# undef lstat
2064# define lstat(a,b) _stati64 (a,b)
2065# endif
2066
2067#define DEF_STAT_INTERVAL 5.0074891
2068#define MIN_STAT_INTERVAL 0.1074891
2069
2070static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071
2072#if EV_USE_INOTIFY
2073# define EV_INOTIFY_BUFSIZE 8192
2074
2075static void noinline
2076infy_add (EV_P_ ev_stat *w)
2077{
2078 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);
2079
2080 if (w->wd < 0)
2081 {
2082 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2083
2084 /* monitor some parent directory for speedup hints */
2085 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086 {
2087 char path [4096];
2088 strcpy (path, w->path);
2089
2090 do
2091 {
2092 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094
2095 char *pend = strrchr (path, '/');
2096
2097 if (!pend)
2098 break; /* whoops, no '/', complain to your admin */
2099
2100 *pend = 0;
2101 w->wd = inotify_add_watch (fs_fd, path, mask);
2102 }
2103 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104 }
2105 }
2106 else
2107 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108
2109 if (w->wd >= 0)
2110 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2111}
2112
2113static void noinline
2114infy_del (EV_P_ ev_stat *w)
2115{
2116 int slot;
2117 int wd = w->wd;
2118
2119 if (wd < 0)
2120 return;
2121
2122 w->wd = -2;
2123 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2124 wlist_del (&fs_hash [slot].head, (WL)w);
2125
2126 /* remove this watcher, if others are watching it, they will rearm */
2127 inotify_rm_watch (fs_fd, wd);
2128}
2129
2130static void noinline
2131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132{
2133 if (slot < 0)
2134 /* overflow, need to check for all hahs slots */
2135 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2136 infy_wd (EV_A_ slot, wd, ev);
2137 else
2138 {
2139 WL w_;
2140
2141 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2142 {
2143 ev_stat *w = (ev_stat *)w_;
2144 w_ = w_->next; /* lets us remove this watcher and all before it */
2145
2146 if (w->wd == wd || wd == -1)
2147 {
2148 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149 {
2150 w->wd = -1;
2151 infy_add (EV_A_ w); /* re-add, no matter what */
2152 }
2153
2154 stat_timer_cb (EV_A_ &w->timer, 0);
2155 }
2156 }
2157 }
2158}
2159
2160static void
2161infy_cb (EV_P_ ev_io *w, int revents)
2162{
2163 char buf [EV_INOTIFY_BUFSIZE];
2164 struct inotify_event *ev = (struct inotify_event *)buf;
2165 int ofs;
2166 int len = read (fs_fd, buf, sizeof (buf));
2167
2168 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2169 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2170}
2171
2172void inline_size
2173infy_init (EV_P)
2174{
2175 if (fs_fd != -2)
2176 return;
2177
2178 fs_fd = inotify_init ();
2179
2180 if (fs_fd >= 0)
2181 {
2182 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183 ev_set_priority (&fs_w, EV_MAXPRI);
2184 ev_io_start (EV_A_ &fs_w);
2185 }
2186}
2187
2188void inline_size
2189infy_fork (EV_P)
2190{
2191 int slot;
2192
2193 if (fs_fd < 0)
2194 return;
2195
2196 close (fs_fd);
2197 fs_fd = inotify_init ();
2198
2199 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2200 {
2201 WL w_ = fs_hash [slot].head;
2202 fs_hash [slot].head = 0;
2203
2204 while (w_)
2205 {
2206 ev_stat *w = (ev_stat *)w_;
2207 w_ = w_->next; /* lets us add this watcher */
2208
2209 w->wd = -1;
2210
2211 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); /* re-add, no matter what */
2213 else
2214 ev_timer_start (EV_A_ &w->timer);
2215 }
2216
2217 }
2218}
2219
2220#endif
2221
2222void
2223ev_stat_stat (EV_P_ ev_stat *w)
2224{
2225 if (lstat (w->path, &w->attr) < 0)
2226 w->attr.st_nlink = 0;
2227 else if (!w->attr.st_nlink)
2228 w->attr.st_nlink = 1;
2229}
2230
2231static void noinline
2232stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2233{
2234 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2235
2236 /* we copy this here each the time so that */
2237 /* prev has the old value when the callback gets invoked */
2238 w->prev = w->attr;
2239 ev_stat_stat (EV_A_ w);
2240
2241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2242 if (
2243 w->prev.st_dev != w->attr.st_dev
2244 || w->prev.st_ino != w->attr.st_ino
2245 || w->prev.st_mode != w->attr.st_mode
2246 || w->prev.st_nlink != w->attr.st_nlink
2247 || w->prev.st_uid != w->attr.st_uid
2248 || w->prev.st_gid != w->attr.st_gid
2249 || w->prev.st_rdev != w->attr.st_rdev
2250 || w->prev.st_size != w->attr.st_size
2251 || w->prev.st_atime != w->attr.st_atime
2252 || w->prev.st_mtime != w->attr.st_mtime
2253 || w->prev.st_ctime != w->attr.st_ctime
2254 ) {
2255 #if EV_USE_INOTIFY
2256 infy_del (EV_A_ w);
2257 infy_add (EV_A_ w);
2258 ev_stat_stat (EV_A_ w); /* avoid race... */
2259 #endif
2260
2261 ev_feed_event (EV_A_ w, EV_STAT);
2262 }
2263}
2264
2265void
2266ev_stat_start (EV_P_ ev_stat *w)
2267{
2268 if (expect_false (ev_is_active (w)))
2269 return;
2270
2271 /* since we use memcmp, we need to clear any padding data etc. */
2272 memset (&w->prev, 0, sizeof (ev_statdata));
2273 memset (&w->attr, 0, sizeof (ev_statdata));
2274
2275 ev_stat_stat (EV_A_ w);
2276
2277 if (w->interval < MIN_STAT_INTERVAL)
2278 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279
2280 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2281 ev_set_priority (&w->timer, ev_priority (w));
2282
2283#if EV_USE_INOTIFY
2284 infy_init (EV_A);
2285
2286 if (fs_fd >= 0)
2287 infy_add (EV_A_ w);
2288 else
2289#endif
2290 ev_timer_start (EV_A_ &w->timer);
2291
2292 ev_start (EV_A_ (W)w, 1);
2293}
2294
2295void
2296ev_stat_stop (EV_P_ ev_stat *w)
2297{
2298 clear_pending (EV_A_ (W)w);
2299 if (expect_false (!ev_is_active (w)))
2300 return;
2301
2302#if EV_USE_INOTIFY
2303 infy_del (EV_A_ w);
2304#endif
2305 ev_timer_stop (EV_A_ &w->timer);
2306
2307 ev_stop (EV_A_ (W)w);
2308}
2309#endif
2310
2311#if EV_IDLE_ENABLE
2312void
2313ev_idle_start (EV_P_ ev_idle *w)
2314{
2315 if (expect_false (ev_is_active (w)))
2316 return;
2317
2318 pri_adjust (EV_A_ (W)w);
2319
2320 {
2321 int active = ++idlecnt [ABSPRI (w)];
2322
2323 ++idleall;
2324 ev_start (EV_A_ (W)w, active);
2325
2326 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327 idles [ABSPRI (w)][active - 1] = w;
2328 }
2329}
2330
2331void
2332ev_idle_stop (EV_P_ ev_idle *w)
2333{
2334 clear_pending (EV_A_ (W)w);
2335 if (expect_false (!ev_is_active (w)))
2336 return;
2337
2338 {
2339 int active = ((W)w)->active;
2340
2341 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2343
2344 ev_stop (EV_A_ (W)w);
2345 --idleall;
2346 }
2347}
2348#endif
2349
2350void
2351ev_prepare_start (EV_P_ ev_prepare *w)
2352{
2353 if (expect_false (ev_is_active (w)))
2354 return;
2355
2356 ev_start (EV_A_ (W)w, ++preparecnt);
2357 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358 prepares [preparecnt - 1] = w;
2359}
2360
2361void
2362ev_prepare_stop (EV_P_ ev_prepare *w)
2363{
2364 clear_pending (EV_A_ (W)w);
2365 if (expect_false (!ev_is_active (w)))
2366 return;
2367
2368 {
2369 int active = ((W)w)->active;
2370 prepares [active - 1] = prepares [--preparecnt];
2371 ((W)prepares [active - 1])->active = active;
2372 }
2373
2374 ev_stop (EV_A_ (W)w);
2375}
2376
2377void
2378ev_check_start (EV_P_ ev_check *w)
2379{
2380 if (expect_false (ev_is_active (w)))
2381 return;
2382
2383 ev_start (EV_A_ (W)w, ++checkcnt);
2384 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385 checks [checkcnt - 1] = w;
2386}
2387
2388void
2389ev_check_stop (EV_P_ ev_check *w)
2390{
2391 clear_pending (EV_A_ (W)w);
2392 if (expect_false (!ev_is_active (w)))
2393 return;
2394
2395 {
2396 int active = ((W)w)->active;
2397 checks [active - 1] = checks [--checkcnt];
2398 ((W)checks [active - 1])->active = active;
2399 }
2400
2401 ev_stop (EV_A_ (W)w);
2402}
2403
2404#if EV_EMBED_ENABLE
2405void noinline
2406ev_embed_sweep (EV_P_ ev_embed *w)
2407{
2408 ev_loop (w->other, EVLOOP_NONBLOCK);
2409}
2410
2411static void
2412embed_io_cb (EV_P_ ev_io *io, int revents)
2413{
2414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2415
2416 if (ev_cb (w))
2417 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2418 else
2419 ev_loop (w->other, EVLOOP_NONBLOCK);
2420}
2421
2422static void
2423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424{
2425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426
2427 {
2428 struct ev_loop *loop = w->other;
2429
2430 while (fdchangecnt)
2431 {
2432 fd_reify (EV_A);
2433 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2434 }
2435 }
2436}
2437
2438#if 0
2439static void
2440embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2441{
2442 ev_idle_stop (EV_A_ idle);
2443}
2444#endif
2445
2446void
2447ev_embed_start (EV_P_ ev_embed *w)
2448{
2449 if (expect_false (ev_is_active (w)))
2450 return;
2451
2452 {
2453 struct ev_loop *loop = w->other;
2454 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2455 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456 }
2457
2458 ev_set_priority (&w->io, ev_priority (w));
2459 ev_io_start (EV_A_ &w->io);
2460
2461 ev_prepare_init (&w->prepare, embed_prepare_cb);
2462 ev_set_priority (&w->prepare, EV_MINPRI);
2463 ev_prepare_start (EV_A_ &w->prepare);
2464
2465 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466
2467 ev_start (EV_A_ (W)w, 1);
2468}
2469
2470void
2471ev_embed_stop (EV_P_ ev_embed *w)
2472{
2473 clear_pending (EV_A_ (W)w);
2474 if (expect_false (!ev_is_active (w)))
2475 return;
2476
2477 ev_io_stop (EV_A_ &w->io);
2478 ev_prepare_stop (EV_A_ &w->prepare);
2479
2480 ev_stop (EV_A_ (W)w);
2481}
2482#endif
2483
2484#if EV_FORK_ENABLE
2485void
2486ev_fork_start (EV_P_ ev_fork *w)
2487{
2488 if (expect_false (ev_is_active (w)))
2489 return;
2490
2491 ev_start (EV_A_ (W)w, ++forkcnt);
2492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493 forks [forkcnt - 1] = w;
2494}
2495
2496void
2497ev_fork_stop (EV_P_ ev_fork *w)
2498{
2499 clear_pending (EV_A_ (W)w);
2500 if (expect_false (!ev_is_active (w)))
2501 return;
2502
2503 {
2504 int active = ((W)w)->active;
2505 forks [active - 1] = forks [--forkcnt];
2506 ((W)forks [active - 1])->active = active;
2507 }
2508
2509 ev_stop (EV_A_ (W)w);
2510}
2511#endif
2512
2513#if EV_ASYNC_ENABLE
2514void
2515ev_async_start (EV_P_ ev_async *w)
2516{
2517 if (expect_false (ev_is_active (w)))
2518 return;
2519
2520 evpipe_init (EV_A);
2521
2522 ev_start (EV_A_ (W)w, ++asynccnt);
2523 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524 asyncs [asynccnt - 1] = w;
2525}
2526
2527void
2528ev_async_stop (EV_P_ ev_async *w)
2529{
2530 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w)))
2532 return;
2533
2534 {
2535 int active = ((W)w)->active;
2536 asyncs [active - 1] = asyncs [--asynccnt];
2537 ((W)asyncs [active - 1])->active = active;
2538 }
2539
2540 ev_stop (EV_A_ (W)w);
2541}
2542
2543void
2544ev_async_send (EV_P_ ev_async *w)
2545{
2546 w->sent = 1;
2547 evpipe_write (EV_A_ &gotasync);
2548}
2549#endif
2550
1565/*****************************************************************************/ 2551/*****************************************************************************/
1566 2552
1567struct ev_once 2553struct ev_once
1568{ 2554{
1569 struct ev_io io; 2555 ev_io io;
1570 struct ev_timer to; 2556 ev_timer to;
1571 void (*cb)(int revents, void *arg); 2557 void (*cb)(int revents, void *arg);
1572 void *arg; 2558 void *arg;
1573}; 2559};
1574 2560
1575static void 2561static void
… …
1584 2570
1585 cb (revents, arg); 2571 cb (revents, arg);
1586} 2572}
1587 2573
1588static void 2574static void
1589once_cb_io (EV_P_ struct ev_io *w, int revents) 2575once_cb_io (EV_P_ ev_io *w, int revents)
1590{ 2576{
1591 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2577 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1592} 2578}
1593 2579
1594static void 2580static void
1595once_cb_to (EV_P_ struct ev_timer *w, int revents) 2581once_cb_to (EV_P_ ev_timer *w, int revents)
1596{ 2582{
1597 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2583 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1598} 2584}
1599 2585
1600void 2586void
1601ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2587ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1602{ 2588{
1603 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2589 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1604 2590
1605 if (!once) 2591 if (expect_false (!once))
2592 {
1606 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2593 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607 else 2594 return;
1608 { 2595 }
2596
1609 once->cb = cb; 2597 once->cb = cb;
1610 once->arg = arg; 2598 once->arg = arg;
1611 2599
1612 ev_init (&once->io, once_cb_io); 2600 ev_init (&once->io, once_cb_io);
1613 if (fd >= 0) 2601 if (fd >= 0)
1614 { 2602 {
1615 ev_io_set (&once->io, fd, events); 2603 ev_io_set (&once->io, fd, events);
1616 ev_io_start (EV_A_ &once->io); 2604 ev_io_start (EV_A_ &once->io);
1617 } 2605 }
1618 2606
1619 ev_init (&once->to, once_cb_to); 2607 ev_init (&once->to, once_cb_to);
1620 if (timeout >= 0.) 2608 if (timeout >= 0.)
1621 { 2609 {
1622 ev_timer_set (&once->to, timeout, 0.); 2610 ev_timer_set (&once->to, timeout, 0.);
1623 ev_timer_start (EV_A_ &once->to); 2611 ev_timer_start (EV_A_ &once->to);
1624 }
1625 } 2612 }
1626} 2613}
2614
2615#if EV_MULTIPLICITY
2616 #include "ev_wrap.h"
2617#endif
1627 2618
1628#ifdef __cplusplus 2619#ifdef __cplusplus
1629} 2620}
1630#endif 2621#endif
1631 2622

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines