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Comparing libev/ev.c (file contents):
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 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) 2007,2008,2009 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
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 125# else
95# define EV_USE_PORT 0 126# define EV_USE_PORT 0
96# endif 127# endif
97# endif 128# endif
98 129
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1
133# else
134# define EV_USE_INOTIFY 0
135# endif
136# endif
137
138# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif
145
99#endif 146#endif
100 147
101#include <math.h> 148#include <math.h>
102#include <stdlib.h> 149#include <stdlib.h>
103#include <fcntl.h> 150#include <fcntl.h>
… …
109#include <errno.h> 156#include <errno.h>
110#include <sys/types.h> 157#include <sys/types.h>
111#include <time.h> 158#include <time.h>
112 159
113#include <signal.h> 160#include <signal.h>
161
162#ifdef EV_H
163# include EV_H
164#else
165# include "ev.h"
166#endif
114 167
115#ifndef _WIN32 168#ifndef _WIN32
116# include <sys/time.h> 169# include <sys/time.h>
117# include <sys/wait.h> 170# include <sys/wait.h>
118# include <unistd.h> 171# include <unistd.h>
119#else 172#else
173# include <io.h>
120# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 175# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
124# endif 178# endif
125#endif 179#endif
126 180
127/**/ 181/* this block tries to deduce configuration from header-defined symbols and defaults */
182
183#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1
186# else
187# define EV_USE_CLOCK_SYSCALL 0
188# endif
189#endif
128 190
129#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1
194# else
130# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
131#endif 197#endif
132 198
133#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif
202
203#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1
206# else
207# define EV_USE_NANOSLEEP 0
208# endif
135#endif 209#endif
136 210
137#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
139#endif 213#endif
… …
145# define EV_USE_POLL 1 219# define EV_USE_POLL 1
146# endif 220# endif
147#endif 221#endif
148 222
149#ifndef EV_USE_EPOLL 223#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1
226# else
150# define EV_USE_EPOLL 0 227# define EV_USE_EPOLL 0
228# endif
151#endif 229#endif
152 230
153#ifndef EV_USE_KQUEUE 231#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 232# define EV_USE_KQUEUE 0
155#endif 233#endif
156 234
157#ifndef EV_USE_PORT 235#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 236# define EV_USE_PORT 0
237#endif
238
239#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1
242# else
243# define EV_USE_INOTIFY 0
244# endif
159#endif 245#endif
160 246
161#ifndef EV_PID_HASHSIZE 247#ifndef EV_PID_HASHSIZE
162# if EV_MINIMAL 248# if EV_MINIMAL
163# define EV_PID_HASHSIZE 1 249# define EV_PID_HASHSIZE 1
164# else 250# else
165# define EV_PID_HASHSIZE 16 251# define EV_PID_HASHSIZE 16
166# endif 252# endif
167#endif 253#endif
168 254
169/**/ 255#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif
262
263#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1
266# else
267# define EV_USE_EVENTFD 0
268# endif
269#endif
270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
170 304
171#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
172# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
173# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
174#endif 308#endif
… …
176#ifndef CLOCK_REALTIME 310#ifndef CLOCK_REALTIME
177# undef EV_USE_REALTIME 311# undef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 312# define EV_USE_REALTIME 0
179#endif 313#endif
180 314
315#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318#endif
319
320#if !EV_USE_NANOSLEEP
321# ifndef _WIN32
322# include <sys/select.h>
323# endif
324#endif
325
326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
335#endif
336
181#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
182# include <winsock.h> 338# include <winsock.h>
183#endif 339#endif
184 340
341#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h>
344# ifdef __cplusplus
345extern "C" {
346# endif
347int eventfd (unsigned int initval, int flags);
348# ifdef __cplusplus
349}
350# endif
351#endif
352
185/**/ 353/**/
354
355#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
357#else
358# define EV_FREQUENT_CHECK do { } while (0)
359#endif
360
361/*
362 * This is used to avoid floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
186 370
187#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
188#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
189/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
190 374
191#ifdef EV_H
192# include EV_H
193#else
194# include "ev.h"
195#endif
196
197#if __GNUC__ >= 3 375#if __GNUC__ >= 4
198# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
199# define inline_size static inline /* inline for codesize */
200# if EV_MINIMAL
201# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
202# define inline_speed static noinline
203# else
204# define noinline
205# define inline_speed static inline
206# endif
207#else 378#else
208# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
209# define inline_speed static
210# define inline_size static
211# define noinline 380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif
212#endif 384#endif
213 385
214#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
215#define expect_true(expr) expect ((expr) != 0, 1) 387#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline
389
390#if EV_MINIMAL
391# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif
216 395
217#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218#define ABSPRI(w) ((w)->priority - EV_MINPRI) 397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219 398
220#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 399#define EMPTY /* required for microsofts broken pseudo-c compiler */
221#define EMPTY2(a,b) /* used to suppress some warnings */ 400#define EMPTY2(a,b) /* used to suppress some warnings */
222 401
223typedef ev_watcher *W; 402typedef ev_watcher *W;
224typedef ev_watcher_list *WL; 403typedef ev_watcher_list *WL;
225typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
226 405
406#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at
408
409#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif
414
415#if EV_USE_MONOTONIC
227static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif
228 418
229#ifdef _WIN32 419#ifdef _WIN32
230# include "ev_win32.c" 420# include "ev_win32.c"
231#endif 421#endif
232 422
… …
239{ 429{
240 syserr_cb = cb; 430 syserr_cb = cb;
241} 431}
242 432
243static void noinline 433static void noinline
244syserr (const char *msg) 434ev_syserr (const char *msg)
245{ 435{
246 if (!msg) 436 if (!msg)
247 msg = "(libev) system error"; 437 msg = "(libev) system error";
248 438
249 if (syserr_cb) 439 if (syserr_cb)
… …
253 perror (msg); 443 perror (msg);
254 abort (); 444 abort ();
255 } 445 }
256} 446}
257 447
448static void *
449ev_realloc_emul (void *ptr, long size)
450{
451 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and
453 * the single unix specification, so work around them here.
454 */
455
456 if (size)
457 return realloc (ptr, size);
458
459 free (ptr);
460 return 0;
461}
462
258static void *(*alloc)(void *ptr, long size); 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
259 464
260void 465void
261ev_set_allocator (void *(*cb)(void *ptr, long size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
262{ 467{
263 alloc = cb; 468 alloc = cb;
264} 469}
265 470
266static void * 471inline_speed void *
267ev_realloc (void *ptr, long size) 472ev_realloc (void *ptr, long size)
268{ 473{
269 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 474 ptr = alloc (ptr, size);
270 475
271 if (!ptr && size) 476 if (!ptr && size)
272 { 477 {
273 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274 abort (); 479 abort ();
… …
280#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
281#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
282 487
283/*****************************************************************************/ 488/*****************************************************************************/
284 489
490/* file descriptor info structure */
285typedef struct 491typedef struct
286{ 492{
287 WL head; 493 WL head;
288 unsigned char events; 494 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
289 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
290#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
291 SOCKET handle; 502 SOCKET handle;
292#endif 503#endif
293} ANFD; 504} ANFD;
294 505
506/* stores the pending event set for a given watcher */
295typedef struct 507typedef struct
296{ 508{
297 W w; 509 W w;
298 int events; 510 int events; /* the pending event set for the given watcher */
299} ANPENDING; 511} ANPENDING;
512
513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
515typedef struct
516{
517 WL head;
518} ANFS;
519#endif
520
521/* Heap Entry */
522#if EV_HEAP_CACHE_AT
523 /* a heap element */
524 typedef struct {
525 ev_tstamp at;
526 WT w;
527 } ANHE;
528
529 #define ANHE_w(he) (he).w /* access watcher, read-write */
530 #define ANHE_at(he) (he).at /* access cached at, read-only */
531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
532#else
533 /* a heap element */
534 typedef WT ANHE;
535
536 #define ANHE_w(he) (he)
537 #define ANHE_at(he) (he)->at
538 #define ANHE_at_cache(he)
539#endif
300 540
301#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
302 542
303 struct ev_loop 543 struct ev_loop
304 { 544 {
… …
324 564
325#endif 565#endif
326 566
327/*****************************************************************************/ 567/*****************************************************************************/
328 568
569#ifndef EV_HAVE_EV_TIME
329ev_tstamp 570ev_tstamp
330ev_time (void) 571ev_time (void)
331{ 572{
332#if EV_USE_REALTIME 573#if EV_USE_REALTIME
574 if (expect_true (have_realtime))
575 {
333 struct timespec ts; 576 struct timespec ts;
334 clock_gettime (CLOCK_REALTIME, &ts); 577 clock_gettime (CLOCK_REALTIME, &ts);
335 return ts.tv_sec + ts.tv_nsec * 1e-9; 578 return ts.tv_sec + ts.tv_nsec * 1e-9;
336#else 579 }
580#endif
581
337 struct timeval tv; 582 struct timeval tv;
338 gettimeofday (&tv, 0); 583 gettimeofday (&tv, 0);
339 return tv.tv_sec + tv.tv_usec * 1e-6; 584 return tv.tv_sec + tv.tv_usec * 1e-6;
340#endif
341} 585}
586#endif
342 587
343ev_tstamp inline_size 588inline_size ev_tstamp
344get_clock (void) 589get_clock (void)
345{ 590{
346#if EV_USE_MONOTONIC 591#if EV_USE_MONOTONIC
347 if (expect_true (have_monotonic)) 592 if (expect_true (have_monotonic))
348 { 593 {
… …
361{ 606{
362 return ev_rt_now; 607 return ev_rt_now;
363} 608}
364#endif 609#endif
365 610
366#define array_roundsize(type,n) (((n) | 4) & ~3) 611void
612ev_sleep (ev_tstamp delay)
613{
614 if (delay > 0.)
615 {
616#if EV_USE_NANOSLEEP
617 struct timespec ts;
618
619 ts.tv_sec = (time_t)delay;
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0);
623#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3));
625#else
626 struct timeval tv;
627
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */
634 select (0, 0, 0, 0, &tv);
635#endif
636 }
637}
638
639/*****************************************************************************/
640
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642
643/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */
645inline_size int
646array_nextsize (int elem, int cur, int cnt)
647{
648 int ncur = cur + 1;
649
650 do
651 ncur <<= 1;
652 while (cnt > ncur);
653
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 {
657 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4;
660 ncur /= elem;
661 }
662
663 return ncur;
664}
665
666static noinline void *
667array_realloc (int elem, void *base, int *cur, int cnt)
668{
669 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur);
671}
672
673#define array_init_zero(base,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count))
367 675
368#define array_needsize(type,base,cur,cnt,init) \ 676#define array_needsize(type,base,cur,cnt,init) \
369 if (expect_false ((cnt) > cur)) \ 677 if (expect_false ((cnt) > (cur))) \
370 { \ 678 { \
371 int newcnt = cur; \ 679 int ocur_ = (cur); \
372 do \ 680 (base) = (type *)array_realloc \
373 { \ 681 (sizeof (type), (base), &(cur), (cnt)); \
374 newcnt = array_roundsize (type, newcnt << 1); \ 682 init ((base) + (ocur_), (cur) - ocur_); \
375 } \
376 while ((cnt) > newcnt); \
377 \
378 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
379 init (base + cur, newcnt - cur); \
380 cur = newcnt; \
381 } 683 }
382 684
685#if 0
383#define array_slim(type,stem) \ 686#define array_slim(type,stem) \
384 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 687 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385 { \ 688 { \
386 stem ## max = array_roundsize (stem ## cnt >> 1); \ 689 stem ## max = array_roundsize (stem ## cnt >> 1); \
387 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 690 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
388 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 691 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
389 } 692 }
693#endif
390 694
391#define array_free(stem, idx) \ 695#define array_free(stem, idx) \
392 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
393 697
394/*****************************************************************************/ 698/*****************************************************************************/
699
700/* dummy callback for pending events */
701static void noinline
702pendingcb (EV_P_ ev_prepare *w, int revents)
703{
704}
395 705
396void noinline 706void noinline
397ev_feed_event (EV_P_ void *w, int revents) 707ev_feed_event (EV_P_ void *w, int revents)
398{ 708{
399 W w_ = (W)w; 709 W w_ = (W)w;
710 int pri = ABSPRI (w_);
400 711
401 if (expect_false (w_->pending)) 712 if (expect_false (w_->pending))
713 pendings [pri][w_->pending - 1].events |= revents;
714 else
402 { 715 {
716 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 719 pendings [pri][w_->pending - 1].events = revents;
404 return;
405 } 720 }
406
407 w_->pending = ++pendingcnt [ABSPRI (w_)];
408 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411} 721}
412 722
413void inline_size 723inline_speed void
724feed_reverse (EV_P_ W w)
725{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
727 rfeeds [rfeedcnt++] = w;
728}
729
730inline_size void
731feed_reverse_done (EV_P_ int revents)
732{
733 do
734 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
735 while (rfeedcnt);
736}
737
738inline_speed void
414queue_events (EV_P_ W *events, int eventcnt, int type) 739queue_events (EV_P_ W *events, int eventcnt, int type)
415{ 740{
416 int i; 741 int i;
417 742
418 for (i = 0; i < eventcnt; ++i) 743 for (i = 0; i < eventcnt; ++i)
419 ev_feed_event (EV_A_ events [i], type); 744 ev_feed_event (EV_A_ events [i], type);
420} 745}
421 746
422/*****************************************************************************/ 747/*****************************************************************************/
423 748
424void inline_size 749inline_speed void
425anfds_init (ANFD *base, int count)
426{
427 while (count--)
428 {
429 base->head = 0;
430 base->events = EV_NONE;
431 base->reify = 0;
432
433 ++base;
434 }
435}
436
437void inline_speed
438fd_event (EV_P_ int fd, int revents) 750fd_event (EV_P_ int fd, int revents)
439{ 751{
440 ANFD *anfd = anfds + fd; 752 ANFD *anfd = anfds + fd;
441 ev_io *w; 753 ev_io *w;
442 754
… …
450} 762}
451 763
452void 764void
453ev_feed_fd_event (EV_P_ int fd, int revents) 765ev_feed_fd_event (EV_P_ int fd, int revents)
454{ 766{
767 if (fd >= 0 && fd < anfdmax)
455 fd_event (EV_A_ fd, revents); 768 fd_event (EV_A_ fd, revents);
456} 769}
457 770
458void inline_size 771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */
773inline_size void
459fd_reify (EV_P) 774fd_reify (EV_P)
460{ 775{
461 int i; 776 int i;
462 777
463 for (i = 0; i < fdchangecnt; ++i) 778 for (i = 0; i < fdchangecnt; ++i)
464 { 779 {
465 int fd = fdchanges [i]; 780 int fd = fdchanges [i];
466 ANFD *anfd = anfds + fd; 781 ANFD *anfd = anfds + fd;
467 ev_io *w; 782 ev_io *w;
468 783
469 int events = 0; 784 unsigned char events = 0;
470 785
471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
472 events |= w->events; 787 events |= (unsigned char)w->events;
473 788
474#if EV_SELECT_IS_WINSOCKET 789#if EV_SELECT_IS_WINSOCKET
475 if (events) 790 if (events)
476 { 791 {
477 unsigned long argp; 792 unsigned long arg;
793 #ifdef EV_FD_TO_WIN32_HANDLE
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795 #else
478 anfd->handle = _get_osfhandle (fd); 796 anfd->handle = _get_osfhandle (fd);
797 #endif
479 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
480 } 799 }
481#endif 800#endif
482 801
802 {
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
483 anfd->reify = 0; 806 anfd->reify = 0;
484
485 backend_modify (EV_A_ fd, anfd->events, events);
486 anfd->events = events; 807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events);
811 }
487 } 812 }
488 813
489 fdchangecnt = 0; 814 fdchangecnt = 0;
490} 815}
491 816
492void inline_size 817/* something about the given fd changed */
818inline_size void
493fd_change (EV_P_ int fd) 819fd_change (EV_P_ int fd, int flags)
494{ 820{
495 if (expect_false (anfds [fd].reify)) 821 unsigned char reify = anfds [fd].reify;
496 return;
497
498 anfds [fd].reify = 1; 822 anfds [fd].reify |= flags;
499 823
824 if (expect_true (!reify))
825 {
500 ++fdchangecnt; 826 ++fdchangecnt;
501 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502 fdchanges [fdchangecnt - 1] = fd; 828 fdchanges [fdchangecnt - 1] = fd;
829 }
503} 830}
504 831
505void inline_speed 832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void
506fd_kill (EV_P_ int fd) 834fd_kill (EV_P_ int fd)
507{ 835{
508 ev_io *w; 836 ev_io *w;
509 837
510 while ((w = (ev_io *)anfds [fd].head)) 838 while ((w = (ev_io *)anfds [fd].head))
… …
512 ev_io_stop (EV_A_ w); 840 ev_io_stop (EV_A_ w);
513 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
514 } 842 }
515} 843}
516 844
517int inline_size 845/* check whether the given fd is atcually valid, for error recovery */
846inline_size int
518fd_valid (int fd) 847fd_valid (int fd)
519{ 848{
520#ifdef _WIN32 849#ifdef _WIN32
521 return _get_osfhandle (fd) != -1; 850 return _get_osfhandle (fd) != -1;
522#else 851#else
… …
530{ 859{
531 int fd; 860 int fd;
532 861
533 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
534 if (anfds [fd].events) 863 if (anfds [fd].events)
535 if (!fd_valid (fd) == -1 && errno == EBADF) 864 if (!fd_valid (fd) && errno == EBADF)
536 fd_kill (EV_A_ fd); 865 fd_kill (EV_A_ fd);
537} 866}
538 867
539/* called on ENOMEM in select/poll to kill some fds and retry */ 868/* called on ENOMEM in select/poll to kill some fds and retry */
540static void noinline 869static void noinline
… …
554static void noinline 883static void noinline
555fd_rearm_all (EV_P) 884fd_rearm_all (EV_P)
556{ 885{
557 int fd; 886 int fd;
558 887
559 /* this should be highly optimised to not do anything but set a flag */
560 for (fd = 0; fd < anfdmax; ++fd) 888 for (fd = 0; fd < anfdmax; ++fd)
561 if (anfds [fd].events) 889 if (anfds [fd].events)
562 { 890 {
563 anfds [fd].events = 0; 891 anfds [fd].events = 0;
892 anfds [fd].emask = 0;
564 fd_change (EV_A_ fd); 893 fd_change (EV_A_ fd, EV__IOFDSET | 1);
565 } 894 }
566} 895}
567 896
568/*****************************************************************************/ 897/*****************************************************************************/
569 898
570void inline_speed 899/*
571upheap (WT *heap, int k) 900 * the heap functions want a real array index. array index 0 uis guaranteed to not
572{ 901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
573 WT w = heap [k]; 902 * the branching factor of the d-tree.
903 */
574 904
575 while (k && heap [k >> 1]->at > w->at) 905/*
576 { 906 * at the moment we allow libev the luxury of two heaps,
577 heap [k] = heap [k >> 1]; 907 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
578 ((W)heap [k])->active = k + 1; 908 * which is more cache-efficient.
579 k >>= 1; 909 * the difference is about 5% with 50000+ watchers.
580 } 910 */
911#if EV_USE_4HEAP
581 912
582 heap [k] = w; 913#define DHEAP 4
583 ((W)heap [k])->active = k + 1; 914#define HEAP0 (DHEAP - 1) /* index of first element in heap */
915#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
916#define UPHEAP_DONE(p,k) ((p) == (k))
584 917
585} 918/* away from the root */
586 919inline_speed void
587void inline_speed
588downheap (WT *heap, int N, int k) 920downheap (ANHE *heap, int N, int k)
589{ 921{
590 WT w = heap [k]; 922 ANHE he = heap [k];
923 ANHE *E = heap + N + HEAP0;
591 924
592 while (k < (N >> 1)) 925 for (;;)
593 { 926 {
594 int j = k << 1; 927 ev_tstamp minat;
928 ANHE *minpos;
929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
595 930
596 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 931 /* find minimum child */
932 if (expect_true (pos + DHEAP - 1 < E))
597 ++j; 933 {
598 934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
599 if (w->at <= heap [j]->at) 935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
936 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
937 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 }
939 else if (pos < E)
940 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
942 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
943 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
944 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
945 }
946 else
600 break; 947 break;
601 948
949 if (ANHE_at (he) <= minat)
950 break;
951
952 heap [k] = *minpos;
953 ev_active (ANHE_w (*minpos)) = k;
954
955 k = minpos - heap;
956 }
957
958 heap [k] = he;
959 ev_active (ANHE_w (he)) = k;
960}
961
962#else /* 4HEAP */
963
964#define HEAP0 1
965#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p))
967
968/* away from the root */
969inline_speed void
970downheap (ANHE *heap, int N, int k)
971{
972 ANHE he = heap [k];
973
974 for (;;)
975 {
976 int c = k << 1;
977
978 if (c > N + HEAP0 - 1)
979 break;
980
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0;
983
984 if (ANHE_at (he) <= ANHE_at (heap [c]))
985 break;
986
602 heap [k] = heap [j]; 987 heap [k] = heap [c];
603 ((W)heap [k])->active = k + 1; 988 ev_active (ANHE_w (heap [k])) = k;
989
604 k = j; 990 k = c;
605 } 991 }
606 992
607 heap [k] = w; 993 heap [k] = he;
608 ((W)heap [k])->active = k + 1; 994 ev_active (ANHE_w (he)) = k;
609} 995}
996#endif
610 997
611void inline_size 998/* towards the root */
999inline_speed void
1000upheap (ANHE *heap, int k)
1001{
1002 ANHE he = heap [k];
1003
1004 for (;;)
1005 {
1006 int p = HPARENT (k);
1007
1008 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1009 break;
1010
1011 heap [k] = heap [p];
1012 ev_active (ANHE_w (heap [k])) = k;
1013 k = p;
1014 }
1015
1016 heap [k] = he;
1017 ev_active (ANHE_w (he)) = k;
1018}
1019
1020/* move an element suitably so it is in a correct place */
1021inline_size void
612adjustheap (WT *heap, int N, int k) 1022adjustheap (ANHE *heap, int N, int k)
613{ 1023{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
614 upheap (heap, k); 1025 upheap (heap, k);
1026 else
615 downheap (heap, N, k); 1027 downheap (heap, N, k);
1028}
1029
1030/* rebuild the heap: this function is used only once and executed rarely */
1031inline_size void
1032reheap (ANHE *heap, int N)
1033{
1034 int i;
1035
1036 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1037 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1038 for (i = 0; i < N; ++i)
1039 upheap (heap, i + HEAP0);
616} 1040}
617 1041
618/*****************************************************************************/ 1042/*****************************************************************************/
619 1043
1044/* associate signal watchers to a signal signal */
620typedef struct 1045typedef struct
621{ 1046{
622 WL head; 1047 WL head;
623 sig_atomic_t volatile gotsig; 1048 EV_ATOMIC_T gotsig;
624} ANSIG; 1049} ANSIG;
625 1050
626static ANSIG *signals; 1051static ANSIG *signals;
627static int signalmax; 1052static int signalmax;
628 1053
629static int sigpipe [2]; 1054static EV_ATOMIC_T gotsig;
630static sig_atomic_t volatile gotsig;
631static ev_io sigev;
632 1055
633void inline_size 1056/*****************************************************************************/
634signals_init (ANSIG *base, int count)
635{
636 while (count--)
637 {
638 base->head = 0;
639 base->gotsig = 0;
640 1057
641 ++base; 1058/* used to prepare libev internal fd's */
642 } 1059/* this is not fork-safe */
643} 1060inline_speed void
644
645static void
646sighandler (int signum)
647{
648#if _WIN32
649 signal (signum, sighandler);
650#endif
651
652 signals [signum - 1].gotsig = 1;
653
654 if (!gotsig)
655 {
656 int old_errno = errno;
657 gotsig = 1;
658 write (sigpipe [1], &signum, 1);
659 errno = old_errno;
660 }
661}
662
663void noinline
664ev_feed_signal_event (EV_P_ int signum)
665{
666 WL w;
667
668#if EV_MULTIPLICITY
669 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
670#endif
671
672 --signum;
673
674 if (signum < 0 || signum >= signalmax)
675 return;
676
677 signals [signum].gotsig = 0;
678
679 for (w = signals [signum].head; w; w = w->next)
680 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
681}
682
683static void
684sigcb (EV_P_ ev_io *iow, int revents)
685{
686 int signum;
687
688 read (sigpipe [0], &revents, 1);
689 gotsig = 0;
690
691 for (signum = signalmax; signum--; )
692 if (signals [signum].gotsig)
693 ev_feed_signal_event (EV_A_ signum + 1);
694}
695
696void inline_size
697fd_intern (int fd) 1061fd_intern (int fd)
698{ 1062{
699#ifdef _WIN32 1063#ifdef _WIN32
700 int arg = 1; 1064 unsigned long arg = 1;
701 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
702#else 1066#else
703 fcntl (fd, F_SETFD, FD_CLOEXEC); 1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
704 fcntl (fd, F_SETFL, O_NONBLOCK); 1068 fcntl (fd, F_SETFL, O_NONBLOCK);
705#endif 1069#endif
706} 1070}
707 1071
708static void noinline 1072static void noinline
709siginit (EV_P) 1073evpipe_init (EV_P)
710{ 1074{
1075 if (!ev_is_active (&pipe_w))
1076 {
1077#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0)
1079 {
1080 evpipe [0] = -1;
1081 fd_intern (evfd);
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 }
1084 else
1085#endif
1086 {
1087 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe");
1089
711 fd_intern (sigpipe [0]); 1090 fd_intern (evpipe [0]);
712 fd_intern (sigpipe [1]); 1091 fd_intern (evpipe [1]);
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1093 }
713 1094
714 ev_io_set (&sigev, sigpipe [0], EV_READ);
715 ev_io_start (EV_A_ &sigev); 1095 ev_io_start (EV_A_ &pipe_w);
716 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118
1119 errno = old_errno;
1120 }
1121}
1122
1123/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */
1125static void
1126pipecb (EV_P_ ev_io *iow, int revents)
1127{
1128#if EV_USE_EVENTFD
1129 if (evfd >= 0)
1130 {
1131 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t));
1133 }
1134 else
1135#endif
1136 {
1137 char dummy;
1138 read (evpipe [0], &dummy, 1);
1139 }
1140
1141 if (gotsig && ev_is_default_loop (EV_A))
1142 {
1143 int signum;
1144 gotsig = 0;
1145
1146 for (signum = signalmax; signum--; )
1147 if (signals [signum].gotsig)
1148 ev_feed_signal_event (EV_A_ signum + 1);
1149 }
1150
1151#if EV_ASYNC_ENABLE
1152 if (gotasync)
1153 {
1154 int i;
1155 gotasync = 0;
1156
1157 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent)
1159 {
1160 asyncs [i]->sent = 0;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 }
1163 }
1164#endif
717} 1165}
718 1166
719/*****************************************************************************/ 1167/*****************************************************************************/
720 1168
1169static void
1170ev_sighandler (int signum)
1171{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return;
1197
1198 signals [signum].gotsig = 0;
1199
1200 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202}
1203
1204/*****************************************************************************/
1205
721static ev_child *childs [EV_PID_HASHSIZE]; 1206static WL childs [EV_PID_HASHSIZE];
722 1207
723#ifndef _WIN32 1208#ifndef _WIN32
724 1209
725static ev_signal childev; 1210static ev_signal childev;
726 1211
727void inline_speed 1212#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0
1214#endif
1215
1216/* handle a single child status event */
1217inline_speed void
728child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1218child_reap (EV_P_ int chain, int pid, int status)
729{ 1219{
730 ev_child *w; 1220 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
731 1222
732 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 {
733 if (w->pid == pid || !w->pid) 1225 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1)))
734 { 1227 {
735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
736 w->rpid = pid; 1229 w->rpid = pid;
737 w->rstatus = status; 1230 w->rstatus = status;
738 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1231 ev_feed_event (EV_A_ (W)w, EV_CHILD);
739 } 1232 }
1233 }
740} 1234}
741 1235
742#ifndef WCONTINUED 1236#ifndef WCONTINUED
743# define WCONTINUED 0 1237# define WCONTINUED 0
744#endif 1238#endif
745 1239
1240/* called on sigchld etc., calls waitpid */
746static void 1241static void
747childcb (EV_P_ ev_signal *sw, int revents) 1242childcb (EV_P_ ev_signal *sw, int revents)
748{ 1243{
749 int pid, status; 1244 int pid, status;
750 1245
… …
753 if (!WCONTINUED 1248 if (!WCONTINUED
754 || errno != EINVAL 1249 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1250 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return; 1251 return;
757 1252
758 /* make sure we are called again until all childs have been reaped */ 1253 /* make sure we are called again until all children have been reaped */
759 /* we need to do it this way so that the callback gets called before we continue */ 1254 /* we need to do it this way so that the callback gets called before we continue */
760 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
761 1256
762 child_reap (EV_A_ sw, pid, pid, status); 1257 child_reap (EV_A_ pid, pid, status);
763 if (EV_PID_HASHSIZE > 1) 1258 if (EV_PID_HASHSIZE > 1)
764 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
765} 1260}
766 1261
767#endif 1262#endif
768 1263
769/*****************************************************************************/ 1264/*****************************************************************************/
… …
831 /* kqueue is borked on everything but netbsd apparently */ 1326 /* kqueue is borked on everything but netbsd apparently */
832 /* it usually doesn't work correctly on anything but sockets and pipes */ 1327 /* it usually doesn't work correctly on anything but sockets and pipes */
833 flags &= ~EVBACKEND_KQUEUE; 1328 flags &= ~EVBACKEND_KQUEUE;
834#endif 1329#endif
835#ifdef __APPLE__ 1330#ifdef __APPLE__
836 // flags &= ~EVBACKEND_KQUEUE; for documentation 1331 /* only select works correctly on that "unix-certified" platform */
837 flags &= ~EVBACKEND_POLL; 1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
838#endif 1334#endif
839 1335
840 return flags; 1336 return flags;
841} 1337}
842 1338
843unsigned int 1339unsigned int
844ev_embeddable_backends (void) 1340ev_embeddable_backends (void)
845{ 1341{
846 return EVBACKEND_EPOLL 1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
847 | EVBACKEND_KQUEUE 1343
848 | EVBACKEND_PORT; 1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
849} 1349}
850 1350
851unsigned int 1351unsigned int
852ev_backend (EV_P) 1352ev_backend (EV_P)
853{ 1353{
854 return backend; 1354 return backend;
855} 1355}
856 1356
857static void 1357unsigned int
1358ev_loop_count (EV_P)
1359{
1360 return loop_count;
1361}
1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{
1366 return loop_depth;
1367}
1368
1369void
1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1371{
1372 io_blocktime = interval;
1373}
1374
1375void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{
1378 timeout_blocktime = interval;
1379}
1380
1381/* initialise a loop structure, must be zero-initialised */
1382static void noinline
858loop_init (EV_P_ unsigned int flags) 1383loop_init (EV_P_ unsigned int flags)
859{ 1384{
860 if (!backend) 1385 if (!backend)
861 { 1386 {
1387#if EV_USE_REALTIME
1388 if (!have_realtime)
1389 {
1390 struct timespec ts;
1391
1392 if (!clock_gettime (CLOCK_REALTIME, &ts))
1393 have_realtime = 1;
1394 }
1395#endif
1396
862#if EV_USE_MONOTONIC 1397#if EV_USE_MONOTONIC
1398 if (!have_monotonic)
863 { 1399 {
864 struct timespec ts; 1400 struct timespec ts;
1401
865 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
866 have_monotonic = 1; 1403 have_monotonic = 1;
867 } 1404 }
868#endif 1405#endif
869 1406
870 ev_rt_now = ev_time (); 1407 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1408 mn_now = get_clock ();
872 now_floor = mn_now; 1409 now_floor = mn_now;
873 rtmn_diff = ev_rt_now - mn_now; 1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
1420
1421 /* pid check not overridable via env */
1422#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid ();
1425#endif
874 1426
875 if (!(flags & EVFLAG_NOENV) 1427 if (!(flags & EVFLAG_NOENV)
876 && !enable_secure () 1428 && !enable_secure ()
877 && getenv ("LIBEV_FLAGS")) 1429 && getenv ("LIBEV_FLAGS"))
878 flags = atoi (getenv ("LIBEV_FLAGS")); 1430 flags = atoi (getenv ("LIBEV_FLAGS"));
879 1431
880 if (!(flags & 0x0000ffffUL)) 1432 if (!(flags & 0x0000ffffU))
881 flags |= ev_recommended_backends (); 1433 flags |= ev_recommended_backends ();
882 1434
883 backend = 0;
884#if EV_USE_PORT 1435#if EV_USE_PORT
885 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886#endif 1437#endif
887#if EV_USE_KQUEUE 1438#if EV_USE_KQUEUE
888 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
895#endif 1446#endif
896#if EV_USE_SELECT 1447#if EV_USE_SELECT
897 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
898#endif 1449#endif
899 1450
1451 ev_prepare_init (&pending_w, pendingcb);
1452
900 ev_init (&sigev, sigcb); 1453 ev_init (&pipe_w, pipecb);
901 ev_set_priority (&sigev, EV_MAXPRI); 1454 ev_set_priority (&pipe_w, EV_MAXPRI);
902 } 1455 }
903} 1456}
904 1457
905static void 1458/* free up a loop structure */
1459static void noinline
906loop_destroy (EV_P) 1460loop_destroy (EV_P)
907{ 1461{
908 int i; 1462 int i;
1463
1464 if (ev_is_active (&pipe_w))
1465 {
1466 ev_ref (EV_A); /* signal watcher */
1467 ev_io_stop (EV_A_ &pipe_w);
1468
1469#if EV_USE_EVENTFD
1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479 }
1480
1481#if EV_USE_INOTIFY
1482 if (fs_fd >= 0)
1483 close (fs_fd);
1484#endif
1485
1486 if (backend_fd >= 0)
1487 close (backend_fd);
909 1488
910#if EV_USE_PORT 1489#if EV_USE_PORT
911 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912#endif 1491#endif
913#if EV_USE_KQUEUE 1492#if EV_USE_KQUEUE
… …
922#if EV_USE_SELECT 1501#if EV_USE_SELECT
923 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1502 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924#endif 1503#endif
925 1504
926 for (i = NUMPRI; i--; ) 1505 for (i = NUMPRI; i--; )
1506 {
927 array_free (pending, [i]); 1507 array_free (pending, [i]);
1508#if EV_IDLE_ENABLE
1509 array_free (idle, [i]);
1510#endif
1511 }
1512
1513 ev_free (anfds); anfdmax = 0;
928 1514
929 /* have to use the microsoft-never-gets-it-right macro */ 1515 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY);
930 array_free (fdchange, EMPTY0); 1517 array_free (fdchange, EMPTY);
931 array_free (timer, EMPTY0); 1518 array_free (timer, EMPTY);
932#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
933 array_free (periodic, EMPTY0); 1520 array_free (periodic, EMPTY);
934#endif 1521#endif
1522#if EV_FORK_ENABLE
935 array_free (idle, EMPTY0); 1523 array_free (fork, EMPTY);
1524#endif
936 array_free (prepare, EMPTY0); 1525 array_free (prepare, EMPTY);
937 array_free (check, EMPTY0); 1526 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY);
1529#endif
938 1530
939 backend = 0; 1531 backend = 0;
940} 1532}
941 1533
942static void 1534#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P);
1536#endif
1537
1538inline_size void
943loop_fork (EV_P) 1539loop_fork (EV_P)
944{ 1540{
945#if EV_USE_PORT 1541#if EV_USE_PORT
946 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947#endif 1543#endif
… …
949 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1545 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950#endif 1546#endif
951#if EV_USE_EPOLL 1547#if EV_USE_EPOLL
952 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1548 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
953#endif 1549#endif
1550#if EV_USE_INOTIFY
1551 infy_fork (EV_A);
1552#endif
954 1553
955 if (ev_is_active (&sigev)) 1554 if (ev_is_active (&pipe_w))
956 { 1555 {
957 /* default loop */ 1556 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
958 1562
959 ev_ref (EV_A); 1563 ev_ref (EV_A);
960 ev_io_stop (EV_A_ &sigev); 1564 ev_io_stop (EV_A_ &pipe_w);
1565
1566#if EV_USE_EVENTFD
1567 if (evfd >= 0)
1568 close (evfd);
1569#endif
1570
1571 if (evpipe [0] >= 0)
1572 {
961 close (sigpipe [0]); 1573 close (evpipe [0]);
962 close (sigpipe [1]); 1574 close (evpipe [1]);
1575 }
963 1576
964 while (pipe (sigpipe))
965 syserr ("(libev) error creating pipe");
966
967 siginit (EV_A); 1577 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ);
968 } 1580 }
969 1581
970 postfork = 0; 1582 postfork = 0;
971} 1583}
972 1584
973#if EV_MULTIPLICITY 1585#if EV_MULTIPLICITY
1586
974struct ev_loop * 1587struct ev_loop *
975ev_loop_new (unsigned int flags) 1588ev_loop_new (unsigned int flags)
976{ 1589{
977 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
978 1591
… …
994} 1607}
995 1608
996void 1609void
997ev_loop_fork (EV_P) 1610ev_loop_fork (EV_P)
998{ 1611{
999 postfork = 1; 1612 postfork = 1; /* must be in line with ev_default_fork */
1000} 1613}
1001 1614
1615#if EV_VERIFY
1616static void noinline
1617verify_watcher (EV_P_ W w)
1618{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620
1621 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623}
1624
1625static void noinline
1626verify_heap (EV_P_ ANHE *heap, int N)
1627{
1628 int i;
1629
1630 for (i = HEAP0; i < N + HEAP0; ++i)
1631 {
1632 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1633 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1634 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1635
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 }
1638}
1639
1640static void noinline
1641array_verify (EV_P_ W *ws, int cnt)
1642{
1643 while (cnt--)
1644 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]);
1647 }
1648}
1649#endif
1650
1651void
1652ev_loop_verify (EV_P)
1653{
1654#if EV_VERIFY
1655 int i;
1656 WL w;
1657
1658 assert (activecnt >= -1);
1659
1660 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663
1664 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i)
1666 for (w = anfds [i].head; w; w = w->next)
1667 {
1668 verify_watcher (EV_A_ (W)w);
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 }
1672
1673 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt);
1675
1676#if EV_PERIODIC_ENABLE
1677 assert (periodicmax >= periodiccnt);
1678 verify_heap (EV_A_ periodics, periodiccnt);
1679#endif
1680
1681 for (i = NUMPRI; i--; )
1682 {
1683 assert (pendingmax [i] >= pendingcnt [i]);
1684#if EV_IDLE_ENABLE
1685 assert (idleall >= 0);
1686 assert (idlemax [i] >= idlecnt [i]);
1687 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1688#endif
1689 }
1690
1691#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif
1695
1696#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif
1700
1701 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt);
1703
1704 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt);
1706
1707# if 0
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1002#endif 1710# endif
1711#endif
1712}
1713
1714#endif /* multiplicity */
1003 1715
1004#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
1005struct ev_loop * 1717struct ev_loop *
1006ev_default_loop_init (unsigned int flags) 1718ev_default_loop_init (unsigned int flags)
1007#else 1719#else
1008int 1720int
1009ev_default_loop (unsigned int flags) 1721ev_default_loop (unsigned int flags)
1010#endif 1722#endif
1011{ 1723{
1012 if (sigpipe [0] == sigpipe [1])
1013 if (pipe (sigpipe))
1014 return 0;
1015
1016 if (!ev_default_loop_ptr) 1724 if (!ev_default_loop_ptr)
1017 { 1725 {
1018#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1019 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1020#else 1728#else
… …
1023 1731
1024 loop_init (EV_A_ flags); 1732 loop_init (EV_A_ flags);
1025 1733
1026 if (ev_backend (EV_A)) 1734 if (ev_backend (EV_A))
1027 { 1735 {
1028 siginit (EV_A);
1029
1030#ifndef _WIN32 1736#ifndef _WIN32
1031 ev_signal_init (&childev, childcb, SIGCHLD); 1737 ev_signal_init (&childev, childcb, SIGCHLD);
1032 ev_set_priority (&childev, EV_MAXPRI); 1738 ev_set_priority (&childev, EV_MAXPRI);
1033 ev_signal_start (EV_A_ &childev); 1739 ev_signal_start (EV_A_ &childev);
1034 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1740 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1046{ 1752{
1047#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
1048 struct ev_loop *loop = ev_default_loop_ptr; 1754 struct ev_loop *loop = ev_default_loop_ptr;
1049#endif 1755#endif
1050 1756
1757 ev_default_loop_ptr = 0;
1758
1051#ifndef _WIN32 1759#ifndef _WIN32
1052 ev_ref (EV_A); /* child watcher */ 1760 ev_ref (EV_A); /* child watcher */
1053 ev_signal_stop (EV_A_ &childev); 1761 ev_signal_stop (EV_A_ &childev);
1054#endif 1762#endif
1055 1763
1056 ev_ref (EV_A); /* signal watcher */
1057 ev_io_stop (EV_A_ &sigev);
1058
1059 close (sigpipe [0]); sigpipe [0] = 0;
1060 close (sigpipe [1]); sigpipe [1] = 0;
1061
1062 loop_destroy (EV_A); 1764 loop_destroy (EV_A);
1063} 1765}
1064 1766
1065void 1767void
1066ev_default_fork (void) 1768ev_default_fork (void)
1067{ 1769{
1068#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1069 struct ev_loop *loop = ev_default_loop_ptr; 1771 struct ev_loop *loop = ev_default_loop_ptr;
1070#endif 1772#endif
1071 1773
1072 if (backend) 1774 postfork = 1; /* must be in line with ev_loop_fork */
1073 postfork = 1;
1074} 1775}
1075 1776
1076/*****************************************************************************/ 1777/*****************************************************************************/
1077 1778
1078int inline_size 1779void
1079any_pending (EV_P) 1780ev_invoke (EV_P_ void *w, int revents)
1080{ 1781{
1081 int pri; 1782 EV_CB_INVOKE ((W)w, revents);
1082
1083 for (pri = NUMPRI; pri--; )
1084 if (pendingcnt [pri])
1085 return 1;
1086
1087 return 0;
1088} 1783}
1089 1784
1090void inline_speed 1785inline_speed void
1091call_pending (EV_P) 1786call_pending (EV_P)
1092{ 1787{
1093 int pri; 1788 int pri;
1094 1789
1095 for (pri = NUMPRI; pri--; ) 1790 for (pri = NUMPRI; pri--; )
1096 while (pendingcnt [pri]) 1791 while (pendingcnt [pri])
1097 { 1792 {
1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099 1794
1100 if (expect_true (p->w))
1101 {
1102 assert (("non-pending watcher on pending list", p->w->pending)); 1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1103 1797
1104 p->w->pending = 0; 1798 p->w->pending = 0;
1105 EV_CB_INVOKE (p->w, p->events); 1799 EV_CB_INVOKE (p->w, p->events);
1106 } 1800 EV_FREQUENT_CHECK;
1107 } 1801 }
1108} 1802}
1109 1803
1110void inline_size 1804#if EV_IDLE_ENABLE
1805/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */
1807inline_size void
1808idle_reify (EV_P)
1809{
1810 if (expect_false (idleall))
1811 {
1812 int pri;
1813
1814 for (pri = NUMPRI; pri--; )
1815 {
1816 if (pendingcnt [pri])
1817 break;
1818
1819 if (idlecnt [pri])
1820 {
1821 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1822 break;
1823 }
1824 }
1825 }
1826}
1827#endif
1828
1829/* make timers pending */
1830inline_size void
1111timers_reify (EV_P) 1831timers_reify (EV_P)
1112{ 1832{
1833 EV_FREQUENT_CHECK;
1834
1113 while (timercnt && ((WT)timers [0])->at <= mn_now) 1835 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1114 { 1836 {
1115 ev_timer *w = timers [0]; 1837 do
1116
1117 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1118
1119 /* first reschedule or stop timer */
1120 if (w->repeat)
1121 { 1838 {
1839 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1840
1841 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1842
1843 /* first reschedule or stop timer */
1844 if (w->repeat)
1845 {
1846 ev_at (w) += w->repeat;
1847 if (ev_at (w) < mn_now)
1848 ev_at (w) = mn_now;
1849
1122 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1850 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123 1851
1124 ((WT)w)->at += w->repeat; 1852 ANHE_at_cache (timers [HEAP0]);
1125 if (((WT)w)->at < mn_now)
1126 ((WT)w)->at = mn_now;
1127
1128 downheap ((WT *)timers, timercnt, 0); 1853 downheap (timers, timercnt, HEAP0);
1854 }
1855 else
1856 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1857
1858 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w);
1129 } 1860 }
1130 else 1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1131 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132 1862
1133 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1863 feed_reverse_done (EV_A_ EV_TIMEOUT);
1134 } 1864 }
1135} 1865}
1136 1866
1137#if EV_PERIODIC_ENABLE 1867#if EV_PERIODIC_ENABLE
1138void inline_size 1868/* make periodics pending */
1869inline_size void
1139periodics_reify (EV_P) 1870periodics_reify (EV_P)
1140{ 1871{
1872 EV_FREQUENT_CHECK;
1873
1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1142 { 1875 {
1143 ev_periodic *w = periodics [0]; 1876 int feed_count = 0;
1144 1877
1145 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1878 do
1146
1147 /* first reschedule or stop timer */
1148 if (w->reschedule_cb)
1149 { 1879 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1883
1884 /* first reschedule or stop timer */
1885 if (w->reschedule_cb)
1886 {
1150 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1887 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1888
1151 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1889 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1890
1891 ANHE_at_cache (periodics [HEAP0]);
1152 downheap ((WT *)periodics, periodiccnt, 0); 1892 downheap (periodics, periodiccnt, HEAP0);
1893 }
1894 else if (w->interval)
1895 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0);
1912 }
1913 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1915
1916 EV_FREQUENT_CHECK;
1917 feed_reverse (EV_A_ (W)w);
1153 } 1918 }
1154 else if (w->interval) 1919 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1155 {
1156 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1157 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1158 downheap ((WT *)periodics, periodiccnt, 0);
1159 }
1160 else
1161 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162 1920
1163 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1921 feed_reverse_done (EV_A_ EV_PERIODIC);
1164 } 1922 }
1165} 1923}
1166 1924
1925/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1167static void noinline 1927static void noinline
1168periodics_reschedule (EV_P) 1928periodics_reschedule (EV_P)
1169{ 1929{
1170 int i; 1930 int i;
1171 1931
1172 /* adjust periodics after time jump */ 1932 /* adjust periodics after time jump */
1173 for (i = 0; i < periodiccnt; ++i) 1933 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1174 { 1934 {
1175 ev_periodic *w = periodics [i]; 1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1176 1936
1177 if (w->reschedule_cb) 1937 if (w->reschedule_cb)
1178 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1179 else if (w->interval) 1939 else if (w->interval)
1180 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1941
1942 ANHE_at_cache (periodics [i]);
1943 }
1944
1945 reheap (periodics, periodiccnt);
1946}
1947#endif
1948
1949/* adjust all timers by a given offset */
1950static void noinline
1951timers_reschedule (EV_P_ ev_tstamp adjust)
1952{
1953 int i;
1954
1955 for (i = 0; i < timercnt; ++i)
1181 } 1956 {
1182 1957 ANHE *he = timers + i + HEAP0;
1183 /* now rebuild the heap */ 1958 ANHE_w (*he)->at += adjust;
1184 for (i = periodiccnt >> 1; i--; ) 1959 ANHE_at_cache (*he);
1185 downheap ((WT *)periodics, periodiccnt, i); 1960 }
1186} 1961}
1187#endif
1188 1962
1189int inline_size 1963/* fetch new monotonic and realtime times from the kernel */
1190time_update_monotonic (EV_P) 1964/* also detetc if there was a timejump, and act accordingly */
1965inline_speed void
1966time_update (EV_P_ ev_tstamp max_block)
1191{ 1967{
1968#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic))
1970 {
1971 int i;
1972 ev_tstamp odiff = rtmn_diff;
1973
1192 mn_now = get_clock (); 1974 mn_now = get_clock ();
1193 1975
1976 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1977 /* interpolate in the meantime */
1194 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1978 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195 { 1979 {
1196 ev_rt_now = rtmn_diff + mn_now; 1980 ev_rt_now = rtmn_diff + mn_now;
1197 return 0; 1981 return;
1198 } 1982 }
1199 else 1983
1200 {
1201 now_floor = mn_now; 1984 now_floor = mn_now;
1202 ev_rt_now = ev_time (); 1985 ev_rt_now = ev_time ();
1203 return 1;
1204 }
1205}
1206 1986
1207void inline_size 1987 /* loop a few times, before making important decisions.
1208time_update (EV_P) 1988 * on the choice of "4": one iteration isn't enough,
1209{ 1989 * in case we get preempted during the calls to
1210 int i; 1990 * ev_time and get_clock. a second call is almost guaranteed
1211 1991 * to succeed in that case, though. and looping a few more times
1212#if EV_USE_MONOTONIC 1992 * doesn't hurt either as we only do this on time-jumps or
1213 if (expect_true (have_monotonic)) 1993 * in the unlikely event of having been preempted here.
1214 { 1994 */
1215 if (time_update_monotonic (EV_A)) 1995 for (i = 4; --i; )
1216 { 1996 {
1217 ev_tstamp odiff = rtmn_diff;
1218
1219 /* loop a few times, before making important decisions.
1220 * on the choice of "4": one iteration isn't enough,
1221 * in case we get preempted during the calls to
1222 * ev_time and get_clock. a second call is almost guarenteed
1223 * to succeed in that case, though. and looping a few more times
1224 * doesn't hurt either as we only do this on time-jumps or
1225 * in the unlikely event of getting preempted here.
1226 */
1227 for (i = 4; --i; )
1228 {
1229 rtmn_diff = ev_rt_now - mn_now; 1997 rtmn_diff = ev_rt_now - mn_now;
1230 1998
1231 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1232 return; /* all is well */ 2000 return; /* all is well */
1233 2001
1234 ev_rt_now = ev_time (); 2002 ev_rt_now = ev_time ();
1235 mn_now = get_clock (); 2003 mn_now = get_clock ();
1236 now_floor = mn_now; 2004 now_floor = mn_now;
1237 } 2005 }
1238 2006
2007 /* no timer adjustment, as the monotonic clock doesn't jump */
2008 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1239# if EV_PERIODIC_ENABLE 2009# if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 2010 periodics_reschedule (EV_A);
1241# endif 2011# endif
1242 /* no timer adjustment, as the monotonic clock doesn't jump */
1243 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244 }
1245 } 2012 }
1246 else 2013 else
1247#endif 2014#endif
1248 { 2015 {
1249 ev_rt_now = ev_time (); 2016 ev_rt_now = ev_time ();
1250 2017
1251 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2018 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252 { 2019 {
2020 /* adjust timers. this is easy, as the offset is the same for all of them */
2021 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1253#if EV_PERIODIC_ENABLE 2022#if EV_PERIODIC_ENABLE
1254 periodics_reschedule (EV_A); 2023 periodics_reschedule (EV_A);
1255#endif 2024#endif
1256
1257 /* adjust timers. this is easy, as the offset is the same for all */
1258 for (i = 0; i < timercnt; ++i)
1259 ((WT)timers [i])->at += ev_rt_now - mn_now;
1260 } 2025 }
1261 2026
1262 mn_now = ev_rt_now; 2027 mn_now = ev_rt_now;
1263 } 2028 }
1264} 2029}
1265 2030
1266void 2031void
1267ev_ref (EV_P)
1268{
1269 ++activecnt;
1270}
1271
1272void
1273ev_unref (EV_P)
1274{
1275 --activecnt;
1276}
1277
1278static int loop_done;
1279
1280void
1281ev_loop (EV_P_ int flags) 2032ev_loop (EV_P_ int flags)
1282{ 2033{
1283 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2034 ++loop_depth;
1284 ? EVUNLOOP_ONE
1285 : EVUNLOOP_CANCEL;
1286 2035
1287 while (activecnt) 2036 loop_done = EVUNLOOP_CANCEL;
2037
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
2039
2040 do
1288 { 2041 {
1289 /* we might have forked, so reify kernel state if necessary */ 2042#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A);
2044#endif
2045
2046#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid))
2049 {
2050 curpid = getpid ();
2051 postfork = 1;
2052 }
2053#endif
2054
1290 #if EV_FORK_ENABLE 2055#if EV_FORK_ENABLE
2056 /* we might have forked, so queue fork handlers */
1291 if (expect_false (postfork)) 2057 if (expect_false (postfork))
1292 if (forkcnt) 2058 if (forkcnt)
1293 { 2059 {
1294 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295 call_pending (EV_A); 2061 call_pending (EV_A);
1296 } 2062 }
1297 #endif 2063#endif
1298 2064
1299 /* queue check watchers (and execute them) */ 2065 /* queue prepare watchers (and execute them) */
1300 if (expect_false (preparecnt)) 2066 if (expect_false (preparecnt))
1301 { 2067 {
1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303 call_pending (EV_A); 2069 call_pending (EV_A);
1304 } 2070 }
… …
1310 /* update fd-related kernel structures */ 2076 /* update fd-related kernel structures */
1311 fd_reify (EV_A); 2077 fd_reify (EV_A);
1312 2078
1313 /* calculate blocking time */ 2079 /* calculate blocking time */
1314 { 2080 {
1315 double block; 2081 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.;
1316 2083
1317 if (flags & EVLOOP_NONBLOCK || idlecnt) 2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1318 block = 0.; /* do not block at all */
1319 else
1320 { 2085 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
1321 /* update time to cancel out callback processing overhead */ 2089 /* update time to cancel out callback processing overhead */
1322#if EV_USE_MONOTONIC
1323 if (expect_true (have_monotonic))
1324 time_update_monotonic (EV_A); 2090 time_update (EV_A_ 1e100);
1325 else
1326#endif
1327 {
1328 ev_rt_now = ev_time ();
1329 mn_now = ev_rt_now;
1330 }
1331 2091
1332 block = MAX_BLOCKTIME; 2092 waittime = MAX_BLOCKTIME;
1333 2093
1334 if (timercnt) 2094 if (timercnt)
1335 { 2095 {
1336 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1337 if (block > to) block = to; 2097 if (waittime > to) waittime = to;
1338 } 2098 }
1339 2099
1340#if EV_PERIODIC_ENABLE 2100#if EV_PERIODIC_ENABLE
1341 if (periodiccnt) 2101 if (periodiccnt)
1342 { 2102 {
1343 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1344 if (block > to) block = to; 2104 if (waittime > to) waittime = to;
1345 } 2105 }
1346#endif 2106#endif
1347 2107
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime))
2110 waittime = timeout_blocktime;
2111
2112 /* extra check because io_blocktime is commonly 0 */
1348 if (expect_false (block < 0.)) block = 0.; 2113 if (expect_false (io_blocktime))
2114 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116
2117 if (sleeptime > waittime - backend_fudge)
2118 sleeptime = waittime - backend_fudge;
2119
2120 if (expect_true (sleeptime > 0.))
2121 {
2122 ev_sleep (sleeptime);
2123 waittime -= sleeptime;
2124 }
2125 }
1349 } 2126 }
1350 2127
2128 ++loop_count;
1351 backend_poll (EV_A_ block); 2129 backend_poll (EV_A_ waittime);
2130
2131 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime);
1352 } 2133 }
1353
1354 /* update ev_rt_now, do magic */
1355 time_update (EV_A);
1356 2134
1357 /* queue pending timers and reschedule them */ 2135 /* queue pending timers and reschedule them */
1358 timers_reify (EV_A); /* relative timers called last */ 2136 timers_reify (EV_A); /* relative timers called last */
1359#if EV_PERIODIC_ENABLE 2137#if EV_PERIODIC_ENABLE
1360 periodics_reify (EV_A); /* absolute timers called first */ 2138 periodics_reify (EV_A); /* absolute timers called first */
1361#endif 2139#endif
1362 2140
2141#if EV_IDLE_ENABLE
1363 /* queue idle watchers unless other events are pending */ 2142 /* queue idle watchers unless other events are pending */
1364 if (idlecnt && !any_pending (EV_A)) 2143 idle_reify (EV_A);
1365 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2144#endif
1366 2145
1367 /* queue check watchers, to be executed first */ 2146 /* queue check watchers, to be executed first */
1368 if (expect_false (checkcnt)) 2147 if (expect_false (checkcnt))
1369 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370 2149
1371 call_pending (EV_A); 2150 call_pending (EV_A);
1372
1373 if (expect_false (loop_done))
1374 break;
1375 } 2151 }
2152 while (expect_true (
2153 activecnt
2154 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2156 ));
1376 2157
1377 if (loop_done == EVUNLOOP_ONE) 2158 if (loop_done == EVUNLOOP_ONE)
1378 loop_done = EVUNLOOP_CANCEL; 2159 loop_done = EVUNLOOP_CANCEL;
2160
2161 --loop_depth;
1379} 2162}
1380 2163
1381void 2164void
1382ev_unloop (EV_P_ int how) 2165ev_unloop (EV_P_ int how)
1383{ 2166{
1384 loop_done = how; 2167 loop_done = how;
1385} 2168}
1386 2169
2170void
2171ev_ref (EV_P)
2172{
2173 ++activecnt;
2174}
2175
2176void
2177ev_unref (EV_P)
2178{
2179 --activecnt;
2180}
2181
2182void
2183ev_now_update (EV_P)
2184{
2185 time_update (EV_A_ 1e100);
2186}
2187
2188void
2189ev_suspend (EV_P)
2190{
2191 ev_now_update (EV_A);
2192}
2193
2194void
2195ev_resume (EV_P)
2196{
2197 ev_tstamp mn_prev = mn_now;
2198
2199 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev);
2201#if EV_PERIODIC_ENABLE
2202 /* TODO: really do this? */
2203 periodics_reschedule (EV_A);
2204#endif
2205}
2206
1387/*****************************************************************************/ 2207/*****************************************************************************/
2208/* singly-linked list management, used when the expected list length is short */
1388 2209
1389void inline_size 2210inline_size void
1390wlist_add (WL *head, WL elem) 2211wlist_add (WL *head, WL elem)
1391{ 2212{
1392 elem->next = *head; 2213 elem->next = *head;
1393 *head = elem; 2214 *head = elem;
1394} 2215}
1395 2216
1396void inline_size 2217inline_size void
1397wlist_del (WL *head, WL elem) 2218wlist_del (WL *head, WL elem)
1398{ 2219{
1399 while (*head) 2220 while (*head)
1400 { 2221 {
1401 if (*head == elem) 2222 if (*head == elem)
… …
1406 2227
1407 head = &(*head)->next; 2228 head = &(*head)->next;
1408 } 2229 }
1409} 2230}
1410 2231
1411void inline_speed 2232/* internal, faster, version of ev_clear_pending */
2233inline_speed void
1412ev_clear_pending (EV_P_ W w) 2234clear_pending (EV_P_ W w)
1413{ 2235{
1414 if (w->pending) 2236 if (w->pending)
1415 { 2237 {
1416 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2238 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1417 w->pending = 0; 2239 w->pending = 0;
1418 } 2240 }
1419} 2241}
1420 2242
1421void inline_speed 2243int
2244ev_clear_pending (EV_P_ void *w)
2245{
2246 W w_ = (W)w;
2247 int pending = w_->pending;
2248
2249 if (expect_true (pending))
2250 {
2251 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2252 p->w = (W)&pending_w;
2253 w_->pending = 0;
2254 return p->events;
2255 }
2256 else
2257 return 0;
2258}
2259
2260inline_size void
2261pri_adjust (EV_P_ W w)
2262{
2263 int pri = w->priority;
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri;
2267}
2268
2269inline_speed void
1422ev_start (EV_P_ W w, int active) 2270ev_start (EV_P_ W w, int active)
1423{ 2271{
1424 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2272 pri_adjust (EV_A_ w);
1425 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427 w->active = active; 2273 w->active = active;
1428 ev_ref (EV_A); 2274 ev_ref (EV_A);
1429} 2275}
1430 2276
1431void inline_size 2277inline_size void
1432ev_stop (EV_P_ W w) 2278ev_stop (EV_P_ W w)
1433{ 2279{
1434 ev_unref (EV_A); 2280 ev_unref (EV_A);
1435 w->active = 0; 2281 w->active = 0;
1436} 2282}
1437 2283
1438/*****************************************************************************/ 2284/*****************************************************************************/
1439 2285
1440void 2286void noinline
1441ev_io_start (EV_P_ ev_io *w) 2287ev_io_start (EV_P_ ev_io *w)
1442{ 2288{
1443 int fd = w->fd; 2289 int fd = w->fd;
1444 2290
1445 if (expect_false (ev_is_active (w))) 2291 if (expect_false (ev_is_active (w)))
1446 return; 2292 return;
1447 2293
1448 assert (("ev_io_start called with negative fd", fd >= 0)); 2294 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296
2297 EV_FREQUENT_CHECK;
1449 2298
1450 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
1451 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1452 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2301 wlist_add (&anfds[fd].head, (WL)w);
1453 2302
1454 fd_change (EV_A_ fd); 2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1455} 2304 w->events &= ~EV__IOFDSET;
1456 2305
1457void 2306 EV_FREQUENT_CHECK;
2307}
2308
2309void noinline
1458ev_io_stop (EV_P_ ev_io *w) 2310ev_io_stop (EV_P_ ev_io *w)
1459{ 2311{
1460 ev_clear_pending (EV_A_ (W)w); 2312 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 2313 if (expect_false (!ev_is_active (w)))
1462 return; 2314 return;
1463 2315
1464 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2316 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465 2317
2318 EV_FREQUENT_CHECK;
2319
1466 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2320 wlist_del (&anfds[w->fd].head, (WL)w);
1467 ev_stop (EV_A_ (W)w); 2321 ev_stop (EV_A_ (W)w);
1468 2322
1469 fd_change (EV_A_ w->fd); 2323 fd_change (EV_A_ w->fd, 1);
1470}
1471 2324
1472void 2325 EV_FREQUENT_CHECK;
2326}
2327
2328void noinline
1473ev_timer_start (EV_P_ ev_timer *w) 2329ev_timer_start (EV_P_ ev_timer *w)
1474{ 2330{
1475 if (expect_false (ev_is_active (w))) 2331 if (expect_false (ev_is_active (w)))
1476 return; 2332 return;
1477 2333
1478 ((WT)w)->at += mn_now; 2334 ev_at (w) += mn_now;
1479 2335
1480 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2336 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481 2337
2338 EV_FREQUENT_CHECK;
2339
2340 ++timercnt;
1482 ev_start (EV_A_ (W)w, ++timercnt); 2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1483 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2342 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1484 timers [timercnt - 1] = w; 2343 ANHE_w (timers [ev_active (w)]) = (WT)w;
1485 upheap ((WT *)timers, timercnt - 1); 2344 ANHE_at_cache (timers [ev_active (w)]);
2345 upheap (timers, ev_active (w));
1486 2346
2347 EV_FREQUENT_CHECK;
2348
1487 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1488} 2350}
1489 2351
1490void 2352void noinline
1491ev_timer_stop (EV_P_ ev_timer *w) 2353ev_timer_stop (EV_P_ ev_timer *w)
1492{ 2354{
1493 ev_clear_pending (EV_A_ (W)w); 2355 clear_pending (EV_A_ (W)w);
1494 if (expect_false (!ev_is_active (w))) 2356 if (expect_false (!ev_is_active (w)))
1495 return; 2357 return;
1496 2358
2359 EV_FREQUENT_CHECK;
2360
2361 {
2362 int active = ev_active (w);
2363
1497 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2364 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1498 2365
2366 --timercnt;
2367
1499 if (expect_true (((W)w)->active < timercnt--)) 2368 if (expect_true (active < timercnt + HEAP0))
1500 { 2369 {
1501 timers [((W)w)->active - 1] = timers [timercnt]; 2370 timers [active] = timers [timercnt + HEAP0];
1502 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2371 adjustheap (timers, timercnt, active);
1503 } 2372 }
2373 }
1504 2374
1505 ((WT)w)->at -= mn_now; 2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now;
1506 2378
1507 ev_stop (EV_A_ (W)w); 2379 ev_stop (EV_A_ (W)w);
1508} 2380}
1509 2381
1510void 2382void noinline
1511ev_timer_again (EV_P_ ev_timer *w) 2383ev_timer_again (EV_P_ ev_timer *w)
1512{ 2384{
2385 EV_FREQUENT_CHECK;
2386
1513 if (ev_is_active (w)) 2387 if (ev_is_active (w))
1514 { 2388 {
1515 if (w->repeat) 2389 if (w->repeat)
1516 { 2390 {
1517 ((WT)w)->at = mn_now + w->repeat; 2391 ev_at (w) = mn_now + w->repeat;
2392 ANHE_at_cache (timers [ev_active (w)]);
1518 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2393 adjustheap (timers, timercnt, ev_active (w));
1519 } 2394 }
1520 else 2395 else
1521 ev_timer_stop (EV_A_ w); 2396 ev_timer_stop (EV_A_ w);
1522 } 2397 }
1523 else if (w->repeat) 2398 else if (w->repeat)
1524 { 2399 {
1525 w->at = w->repeat; 2400 ev_at (w) = w->repeat;
1526 ev_timer_start (EV_A_ w); 2401 ev_timer_start (EV_A_ w);
1527 } 2402 }
2403
2404 EV_FREQUENT_CHECK;
1528} 2405}
1529 2406
1530#if EV_PERIODIC_ENABLE 2407#if EV_PERIODIC_ENABLE
1531void 2408void noinline
1532ev_periodic_start (EV_P_ ev_periodic *w) 2409ev_periodic_start (EV_P_ ev_periodic *w)
1533{ 2410{
1534 if (expect_false (ev_is_active (w))) 2411 if (expect_false (ev_is_active (w)))
1535 return; 2412 return;
1536 2413
1537 if (w->reschedule_cb) 2414 if (w->reschedule_cb)
1538 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1539 else if (w->interval) 2416 else if (w->interval)
1540 { 2417 {
1541 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1542 /* this formula differs from the one in periodic_reify because we do not always round up */ 2419 /* this formula differs from the one in periodic_reify because we do not always round up */
1543 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544 } 2421 }
2422 else
2423 ev_at (w) = w->offset;
1545 2424
2425 EV_FREQUENT_CHECK;
2426
2427 ++periodiccnt;
1546 ev_start (EV_A_ (W)w, ++periodiccnt); 2428 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1547 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2429 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1548 periodics [periodiccnt - 1] = w; 2430 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1549 upheap ((WT *)periodics, periodiccnt - 1); 2431 ANHE_at_cache (periodics [ev_active (w)]);
2432 upheap (periodics, ev_active (w));
1550 2433
2434 EV_FREQUENT_CHECK;
2435
1551 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1552} 2437}
1553 2438
1554void 2439void noinline
1555ev_periodic_stop (EV_P_ ev_periodic *w) 2440ev_periodic_stop (EV_P_ ev_periodic *w)
1556{ 2441{
1557 ev_clear_pending (EV_A_ (W)w); 2442 clear_pending (EV_A_ (W)w);
1558 if (expect_false (!ev_is_active (w))) 2443 if (expect_false (!ev_is_active (w)))
1559 return; 2444 return;
1560 2445
2446 EV_FREQUENT_CHECK;
2447
2448 {
2449 int active = ev_active (w);
2450
1561 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2451 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1562 2452
2453 --periodiccnt;
2454
1563 if (expect_true (((W)w)->active < periodiccnt--)) 2455 if (expect_true (active < periodiccnt + HEAP0))
1564 { 2456 {
1565 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2457 periodics [active] = periodics [periodiccnt + HEAP0];
1566 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2458 adjustheap (periodics, periodiccnt, active);
1567 } 2459 }
2460 }
2461
2462 EV_FREQUENT_CHECK;
1568 2463
1569 ev_stop (EV_A_ (W)w); 2464 ev_stop (EV_A_ (W)w);
1570} 2465}
1571 2466
1572void 2467void noinline
1573ev_periodic_again (EV_P_ ev_periodic *w) 2468ev_periodic_again (EV_P_ ev_periodic *w)
1574{ 2469{
1575 /* TODO: use adjustheap and recalculation */ 2470 /* TODO: use adjustheap and recalculation */
1576 ev_periodic_stop (EV_A_ w); 2471 ev_periodic_stop (EV_A_ w);
1577 ev_periodic_start (EV_A_ w); 2472 ev_periodic_start (EV_A_ w);
… …
1580 2475
1581#ifndef SA_RESTART 2476#ifndef SA_RESTART
1582# define SA_RESTART 0 2477# define SA_RESTART 0
1583#endif 2478#endif
1584 2479
1585void 2480void noinline
1586ev_signal_start (EV_P_ ev_signal *w) 2481ev_signal_start (EV_P_ ev_signal *w)
1587{ 2482{
1588#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1589 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590#endif 2485#endif
1591 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
1592 return; 2487 return;
1593 2488
1594 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2490
2491 evpipe_init (EV_A);
2492
2493 EV_FREQUENT_CHECK;
2494
2495 {
2496#ifndef _WIN32
2497 sigset_t full, prev;
2498 sigfillset (&full);
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2503
2504#ifndef _WIN32
2505 sigprocmask (SIG_SETMASK, &prev, 0);
2506#endif
2507 }
1595 2508
1596 ev_start (EV_A_ (W)w, 1); 2509 ev_start (EV_A_ (W)w, 1);
1597 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2510 wlist_add (&signals [w->signum - 1].head, (WL)w);
1599 2511
1600 if (!((WL)w)->next) 2512 if (!((WL)w)->next)
1601 { 2513 {
1602#if _WIN32 2514#if _WIN32
1603 signal (w->signum, sighandler); 2515 signal (w->signum, ev_sighandler);
1604#else 2516#else
1605 struct sigaction sa; 2517 struct sigaction sa;
1606 sa.sa_handler = sighandler; 2518 sa.sa_handler = ev_sighandler;
1607 sigfillset (&sa.sa_mask); 2519 sigfillset (&sa.sa_mask);
1608 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1609 sigaction (w->signum, &sa, 0); 2521 sigaction (w->signum, &sa, 0);
1610#endif 2522#endif
1611 } 2523 }
1612}
1613 2524
1614void 2525 EV_FREQUENT_CHECK;
2526}
2527
2528void noinline
1615ev_signal_stop (EV_P_ ev_signal *w) 2529ev_signal_stop (EV_P_ ev_signal *w)
1616{ 2530{
1617 ev_clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
1618 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
1619 return; 2533 return;
1620 2534
2535 EV_FREQUENT_CHECK;
2536
1621 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2537 wlist_del (&signals [w->signum - 1].head, (WL)w);
1622 ev_stop (EV_A_ (W)w); 2538 ev_stop (EV_A_ (W)w);
1623 2539
1624 if (!signals [w->signum - 1].head) 2540 if (!signals [w->signum - 1].head)
1625 signal (w->signum, SIG_DFL); 2541 signal (w->signum, SIG_DFL);
2542
2543 EV_FREQUENT_CHECK;
1626} 2544}
1627 2545
1628void 2546void
1629ev_child_start (EV_P_ ev_child *w) 2547ev_child_start (EV_P_ ev_child *w)
1630{ 2548{
1631#if EV_MULTIPLICITY 2549#if EV_MULTIPLICITY
1632 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1633#endif 2551#endif
1634 if (expect_false (ev_is_active (w))) 2552 if (expect_false (ev_is_active (w)))
1635 return; 2553 return;
1636 2554
2555 EV_FREQUENT_CHECK;
2556
1637 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
1638 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2559
2560 EV_FREQUENT_CHECK;
1639} 2561}
1640 2562
1641void 2563void
1642ev_child_stop (EV_P_ ev_child *w) 2564ev_child_stop (EV_P_ ev_child *w)
1643{ 2565{
1644 ev_clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
1646 return; 2568 return;
1647 2569
2570 EV_FREQUENT_CHECK;
2571
1648 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649 ev_stop (EV_A_ (W)w); 2573 ev_stop (EV_A_ (W)w);
2574
2575 EV_FREQUENT_CHECK;
1650} 2576}
1651 2577
1652#if EV_STAT_ENABLE 2578#if EV_STAT_ENABLE
1653 2579
1654# ifdef _WIN32 2580# ifdef _WIN32
1655# undef lstat 2581# undef lstat
1656# define lstat(a,b) _stati64 (a,b) 2582# define lstat(a,b) _stati64 (a,b)
1657# endif 2583# endif
1658 2584
1659#define DEF_STAT_INTERVAL 5.0074891 2585#define DEF_STAT_INTERVAL 5.0074891
2586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1660#define MIN_STAT_INTERVAL 0.1074891 2587#define MIN_STAT_INTERVAL 0.1074891
2588
2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2590
2591#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192
2593
2594static void noinline
2595infy_add (EV_P_ ev_stat *w)
2596{
2597 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);
2598
2599 if (w->wd < 0)
2600 {
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603
2604 /* monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 {
2609 char path [4096];
2610 strcpy (path, w->path);
2611
2612 do
2613 {
2614 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2615 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2616
2617 char *pend = strrchr (path, '/');
2618
2619 if (!pend || pend == path)
2620 break;
2621
2622 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 }
2627 }
2628
2629 if (w->wd >= 0)
2630 {
2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2632
2633 /* now local changes will be tracked by inotify, but remote changes won't */
2634 /* unless the filesystem it known to be local, we therefore still poll */
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer);
2649 }
2650}
2651
2652static void noinline
2653infy_del (EV_P_ ev_stat *w)
2654{
2655 int slot;
2656 int wd = w->wd;
2657
2658 if (wd < 0)
2659 return;
2660
2661 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w);
2664
2665 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd);
2667}
2668
2669static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{
2672 if (slot < 0)
2673 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2675 infy_wd (EV_A_ slot, wd, ev);
2676 else
2677 {
2678 WL w_;
2679
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2681 {
2682 ev_stat *w = (ev_stat *)w_;
2683 w_ = w_->next; /* lets us remove this watcher and all before it */
2684
2685 if (w->wd == wd || wd == -1)
2686 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2690 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */
2692 }
2693
2694 stat_timer_cb (EV_A_ &w->timer, 0);
2695 }
2696 }
2697 }
2698}
2699
2700static void
2701infy_cb (EV_P_ ev_io *w, int revents)
2702{
2703 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf));
2707
2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2709 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2710}
2711
2712inline_size void
2713check_2625 (EV_P)
2714{
2715 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */
2718 struct utsname buf;
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return;
2723
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1;
2733}
2734
2735inline_size void
2736infy_init (EV_P)
2737{
2738 if (fs_fd != -2)
2739 return;
2740
2741 fs_fd = -1;
2742
2743 check_2625 (EV_A);
2744
2745 fs_fd = inotify_init ();
2746
2747 if (fs_fd >= 0)
2748 {
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w);
2752 }
2753}
2754
2755inline_size void
2756infy_fork (EV_P)
2757{
2758 int slot;
2759
2760 if (fs_fd < 0)
2761 return;
2762
2763 close (fs_fd);
2764 fs_fd = inotify_init ();
2765
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2767 {
2768 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0;
2770
2771 while (w_)
2772 {
2773 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us add this watcher */
2775
2776 w->wd = -1;
2777
2778 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */
2780 else
2781 ev_timer_again (EV_A_ &w->timer);
2782 }
2783 }
2784}
2785
2786#endif
2787
2788#ifdef _WIN32
2789# define EV_LSTAT(p,b) _stati64 (p, b)
2790#else
2791# define EV_LSTAT(p,b) lstat (p, b)
2792#endif
1661 2793
1662void 2794void
1663ev_stat_stat (EV_P_ ev_stat *w) 2795ev_stat_stat (EV_P_ ev_stat *w)
1664{ 2796{
1665 if (lstat (w->path, &w->attr) < 0) 2797 if (lstat (w->path, &w->attr) < 0)
1666 w->attr.st_nlink = 0; 2798 w->attr.st_nlink = 0;
1667 else if (!w->attr.st_nlink) 2799 else if (!w->attr.st_nlink)
1668 w->attr.st_nlink = 1; 2800 w->attr.st_nlink = 1;
1669} 2801}
1670 2802
1671static void 2803static void noinline
1672stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2804stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673{ 2805{
1674 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675 2807
1676 /* we copy this here each the time so that */ 2808 /* we copy this here each the time so that */
1677 /* prev has the old value when the callback gets invoked */ 2809 /* prev has the old value when the callback gets invoked */
1678 w->prev = w->attr; 2810 w->prev = w->attr;
1679 ev_stat_stat (EV_A_ w); 2811 ev_stat_stat (EV_A_ w);
1680 2812
1681 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2813 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2814 if (
2815 w->prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime
2826 ) {
2827 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0)
2829 {
2830 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w);
2832 ev_stat_stat (EV_A_ w); /* avoid race... */
2833 }
2834 #endif
2835
1682 ev_feed_event (EV_A_ w, EV_STAT); 2836 ev_feed_event (EV_A_ w, EV_STAT);
2837 }
1683} 2838}
1684 2839
1685void 2840void
1686ev_stat_start (EV_P_ ev_stat *w) 2841ev_stat_start (EV_P_ ev_stat *w)
1687{ 2842{
1688 if (expect_false (ev_is_active (w))) 2843 if (expect_false (ev_is_active (w)))
1689 return; 2844 return;
1690 2845
1691 /* since we use memcmp, we need to clear any padding data etc. */
1692 memset (&w->prev, 0, sizeof (ev_statdata));
1693 memset (&w->attr, 0, sizeof (ev_statdata));
1694
1695 ev_stat_stat (EV_A_ w); 2846 ev_stat_stat (EV_A_ w);
1696 2847
2848 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1697 if (w->interval < MIN_STAT_INTERVAL) 2849 w->interval = MIN_STAT_INTERVAL;
1698 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699 2850
1700 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2851 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1701 ev_set_priority (&w->timer, ev_priority (w)); 2852 ev_set_priority (&w->timer, ev_priority (w));
2853
2854#if EV_USE_INOTIFY
2855 infy_init (EV_A);
2856
2857 if (fs_fd >= 0)
2858 infy_add (EV_A_ w);
2859 else
2860#endif
1702 ev_timer_start (EV_A_ &w->timer); 2861 ev_timer_again (EV_A_ &w->timer);
1703 2862
1704 ev_start (EV_A_ (W)w, 1); 2863 ev_start (EV_A_ (W)w, 1);
2864
2865 EV_FREQUENT_CHECK;
1705} 2866}
1706 2867
1707void 2868void
1708ev_stat_stop (EV_P_ ev_stat *w) 2869ev_stat_stop (EV_P_ ev_stat *w)
1709{ 2870{
1710 ev_clear_pending (EV_A_ (W)w); 2871 clear_pending (EV_A_ (W)w);
1711 if (expect_false (!ev_is_active (w))) 2872 if (expect_false (!ev_is_active (w)))
1712 return; 2873 return;
1713 2874
2875 EV_FREQUENT_CHECK;
2876
2877#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w);
2879#endif
1714 ev_timer_stop (EV_A_ &w->timer); 2880 ev_timer_stop (EV_A_ &w->timer);
1715 2881
1716 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
1717}
1718#endif
1719 2883
2884 EV_FREQUENT_CHECK;
2885}
2886#endif
2887
2888#if EV_IDLE_ENABLE
1720void 2889void
1721ev_idle_start (EV_P_ ev_idle *w) 2890ev_idle_start (EV_P_ ev_idle *w)
1722{ 2891{
1723 if (expect_false (ev_is_active (w))) 2892 if (expect_false (ev_is_active (w)))
1724 return; 2893 return;
1725 2894
2895 pri_adjust (EV_A_ (W)w);
2896
2897 EV_FREQUENT_CHECK;
2898
2899 {
2900 int active = ++idlecnt [ABSPRI (w)];
2901
2902 ++idleall;
1726 ev_start (EV_A_ (W)w, ++idlecnt); 2903 ev_start (EV_A_ (W)w, active);
2904
1727 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2905 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728 idles [idlecnt - 1] = w; 2906 idles [ABSPRI (w)][active - 1] = w;
2907 }
2908
2909 EV_FREQUENT_CHECK;
1729} 2910}
1730 2911
1731void 2912void
1732ev_idle_stop (EV_P_ ev_idle *w) 2913ev_idle_stop (EV_P_ ev_idle *w)
1733{ 2914{
1734 ev_clear_pending (EV_A_ (W)w); 2915 clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w))) 2916 if (expect_false (!ev_is_active (w)))
1736 return; 2917 return;
1737 2918
2919 EV_FREQUENT_CHECK;
2920
1738 { 2921 {
1739 int active = ((W)w)->active; 2922 int active = ev_active (w);
1740 idles [active - 1] = idles [--idlecnt]; 2923
1741 ((W)idles [active - 1])->active = active; 2924 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2925 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2926
2927 ev_stop (EV_A_ (W)w);
2928 --idleall;
1742 } 2929 }
1743 2930
1744 ev_stop (EV_A_ (W)w); 2931 EV_FREQUENT_CHECK;
1745} 2932}
2933#endif
1746 2934
1747void 2935void
1748ev_prepare_start (EV_P_ ev_prepare *w) 2936ev_prepare_start (EV_P_ ev_prepare *w)
1749{ 2937{
1750 if (expect_false (ev_is_active (w))) 2938 if (expect_false (ev_is_active (w)))
1751 return; 2939 return;
2940
2941 EV_FREQUENT_CHECK;
1752 2942
1753 ev_start (EV_A_ (W)w, ++preparecnt); 2943 ev_start (EV_A_ (W)w, ++preparecnt);
1754 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2944 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1755 prepares [preparecnt - 1] = w; 2945 prepares [preparecnt - 1] = w;
2946
2947 EV_FREQUENT_CHECK;
1756} 2948}
1757 2949
1758void 2950void
1759ev_prepare_stop (EV_P_ ev_prepare *w) 2951ev_prepare_stop (EV_P_ ev_prepare *w)
1760{ 2952{
1761 ev_clear_pending (EV_A_ (W)w); 2953 clear_pending (EV_A_ (W)w);
1762 if (expect_false (!ev_is_active (w))) 2954 if (expect_false (!ev_is_active (w)))
1763 return; 2955 return;
1764 2956
2957 EV_FREQUENT_CHECK;
2958
1765 { 2959 {
1766 int active = ((W)w)->active; 2960 int active = ev_active (w);
2961
1767 prepares [active - 1] = prepares [--preparecnt]; 2962 prepares [active - 1] = prepares [--preparecnt];
1768 ((W)prepares [active - 1])->active = active; 2963 ev_active (prepares [active - 1]) = active;
1769 } 2964 }
1770 2965
1771 ev_stop (EV_A_ (W)w); 2966 ev_stop (EV_A_ (W)w);
2967
2968 EV_FREQUENT_CHECK;
1772} 2969}
1773 2970
1774void 2971void
1775ev_check_start (EV_P_ ev_check *w) 2972ev_check_start (EV_P_ ev_check *w)
1776{ 2973{
1777 if (expect_false (ev_is_active (w))) 2974 if (expect_false (ev_is_active (w)))
1778 return; 2975 return;
2976
2977 EV_FREQUENT_CHECK;
1779 2978
1780 ev_start (EV_A_ (W)w, ++checkcnt); 2979 ev_start (EV_A_ (W)w, ++checkcnt);
1781 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2980 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1782 checks [checkcnt - 1] = w; 2981 checks [checkcnt - 1] = w;
2982
2983 EV_FREQUENT_CHECK;
1783} 2984}
1784 2985
1785void 2986void
1786ev_check_stop (EV_P_ ev_check *w) 2987ev_check_stop (EV_P_ ev_check *w)
1787{ 2988{
1788 ev_clear_pending (EV_A_ (W)w); 2989 clear_pending (EV_A_ (W)w);
1789 if (expect_false (!ev_is_active (w))) 2990 if (expect_false (!ev_is_active (w)))
1790 return; 2991 return;
1791 2992
2993 EV_FREQUENT_CHECK;
2994
1792 { 2995 {
1793 int active = ((W)w)->active; 2996 int active = ev_active (w);
2997
1794 checks [active - 1] = checks [--checkcnt]; 2998 checks [active - 1] = checks [--checkcnt];
1795 ((W)checks [active - 1])->active = active; 2999 ev_active (checks [active - 1]) = active;
1796 } 3000 }
1797 3001
1798 ev_stop (EV_A_ (W)w); 3002 ev_stop (EV_A_ (W)w);
3003
3004 EV_FREQUENT_CHECK;
1799} 3005}
1800 3006
1801#if EV_EMBED_ENABLE 3007#if EV_EMBED_ENABLE
1802void noinline 3008void noinline
1803ev_embed_sweep (EV_P_ ev_embed *w) 3009ev_embed_sweep (EV_P_ ev_embed *w)
1804{ 3010{
1805 ev_loop (w->loop, EVLOOP_NONBLOCK); 3011 ev_loop (w->other, EVLOOP_NONBLOCK);
1806} 3012}
1807 3013
1808static void 3014static void
1809embed_cb (EV_P_ ev_io *io, int revents) 3015embed_io_cb (EV_P_ ev_io *io, int revents)
1810{ 3016{
1811 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1812 3018
1813 if (ev_cb (w)) 3019 if (ev_cb (w))
1814 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3020 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815 else 3021 else
1816 ev_embed_sweep (loop, w); 3022 ev_loop (w->other, EVLOOP_NONBLOCK);
1817} 3023}
3024
3025static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029
3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 while (fdchangecnt)
3034 {
3035 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037 }
3038 }
3039}
3040
3041static void
3042embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3043{
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045
3046 ev_embed_stop (EV_A_ w);
3047
3048 {
3049 struct ev_loop *loop = w->other;
3050
3051 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3053 }
3054
3055 ev_embed_start (EV_A_ w);
3056}
3057
3058#if 0
3059static void
3060embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3061{
3062 ev_idle_stop (EV_A_ idle);
3063}
3064#endif
1818 3065
1819void 3066void
1820ev_embed_start (EV_P_ ev_embed *w) 3067ev_embed_start (EV_P_ ev_embed *w)
1821{ 3068{
1822 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
1823 return; 3070 return;
1824 3071
1825 { 3072 {
1826 struct ev_loop *loop = w->loop; 3073 struct ev_loop *loop = w->other;
1827 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829 } 3076 }
3077
3078 EV_FREQUENT_CHECK;
1830 3079
1831 ev_set_priority (&w->io, ev_priority (w)); 3080 ev_set_priority (&w->io, ev_priority (w));
1832 ev_io_start (EV_A_ &w->io); 3081 ev_io_start (EV_A_ &w->io);
1833 3082
3083 ev_prepare_init (&w->prepare, embed_prepare_cb);
3084 ev_set_priority (&w->prepare, EV_MINPRI);
3085 ev_prepare_start (EV_A_ &w->prepare);
3086
3087 ev_fork_init (&w->fork, embed_fork_cb);
3088 ev_fork_start (EV_A_ &w->fork);
3089
3090 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3091
1834 ev_start (EV_A_ (W)w, 1); 3092 ev_start (EV_A_ (W)w, 1);
3093
3094 EV_FREQUENT_CHECK;
1835} 3095}
1836 3096
1837void 3097void
1838ev_embed_stop (EV_P_ ev_embed *w) 3098ev_embed_stop (EV_P_ ev_embed *w)
1839{ 3099{
1840 ev_clear_pending (EV_A_ (W)w); 3100 clear_pending (EV_A_ (W)w);
1841 if (expect_false (!ev_is_active (w))) 3101 if (expect_false (!ev_is_active (w)))
1842 return; 3102 return;
1843 3103
3104 EV_FREQUENT_CHECK;
3105
1844 ev_io_stop (EV_A_ &w->io); 3106 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork);
1845 3109
1846 ev_stop (EV_A_ (W)w); 3110 EV_FREQUENT_CHECK;
1847} 3111}
1848#endif 3112#endif
1849 3113
1850#if EV_FORK_ENABLE 3114#if EV_FORK_ENABLE
1851void 3115void
1852ev_fork_start (EV_P_ ev_fork *w) 3116ev_fork_start (EV_P_ ev_fork *w)
1853{ 3117{
1854 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
1855 return; 3119 return;
3120
3121 EV_FREQUENT_CHECK;
1856 3122
1857 ev_start (EV_A_ (W)w, ++forkcnt); 3123 ev_start (EV_A_ (W)w, ++forkcnt);
1858 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3124 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1859 forks [forkcnt - 1] = w; 3125 forks [forkcnt - 1] = w;
3126
3127 EV_FREQUENT_CHECK;
1860} 3128}
1861 3129
1862void 3130void
1863ev_fork_stop (EV_P_ ev_fork *w) 3131ev_fork_stop (EV_P_ ev_fork *w)
1864{ 3132{
1865 ev_clear_pending (EV_A_ (W)w); 3133 clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w))) 3134 if (expect_false (!ev_is_active (w)))
1867 return; 3135 return;
1868 3136
3137 EV_FREQUENT_CHECK;
3138
1869 { 3139 {
1870 int active = ((W)w)->active; 3140 int active = ev_active (w);
3141
1871 forks [active - 1] = forks [--forkcnt]; 3142 forks [active - 1] = forks [--forkcnt];
1872 ((W)forks [active - 1])->active = active; 3143 ev_active (forks [active - 1]) = active;
1873 } 3144 }
1874 3145
1875 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
3147
3148 EV_FREQUENT_CHECK;
3149}
3150#endif
3151
3152#if EV_ASYNC_ENABLE
3153void
3154ev_async_start (EV_P_ ev_async *w)
3155{
3156 if (expect_false (ev_is_active (w)))
3157 return;
3158
3159 evpipe_init (EV_A);
3160
3161 EV_FREQUENT_CHECK;
3162
3163 ev_start (EV_A_ (W)w, ++asynccnt);
3164 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3165 asyncs [asynccnt - 1] = w;
3166
3167 EV_FREQUENT_CHECK;
3168}
3169
3170void
3171ev_async_stop (EV_P_ ev_async *w)
3172{
3173 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w)))
3175 return;
3176
3177 EV_FREQUENT_CHECK;
3178
3179 {
3180 int active = ev_active (w);
3181
3182 asyncs [active - 1] = asyncs [--asynccnt];
3183 ev_active (asyncs [active - 1]) = active;
3184 }
3185
3186 ev_stop (EV_A_ (W)w);
3187
3188 EV_FREQUENT_CHECK;
3189}
3190
3191void
3192ev_async_send (EV_P_ ev_async *w)
3193{
3194 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync);
1876} 3196}
1877#endif 3197#endif
1878 3198
1879/*****************************************************************************/ 3199/*****************************************************************************/
1880 3200
… …
1890once_cb (EV_P_ struct ev_once *once, int revents) 3210once_cb (EV_P_ struct ev_once *once, int revents)
1891{ 3211{
1892 void (*cb)(int revents, void *arg) = once->cb; 3212 void (*cb)(int revents, void *arg) = once->cb;
1893 void *arg = once->arg; 3213 void *arg = once->arg;
1894 3214
1895 ev_io_stop (EV_A_ &once->io); 3215 ev_io_stop (EV_A_ &once->io);
1896 ev_timer_stop (EV_A_ &once->to); 3216 ev_timer_stop (EV_A_ &once->to);
1897 ev_free (once); 3217 ev_free (once);
1898 3218
1899 cb (revents, arg); 3219 cb (revents, arg);
1900} 3220}
1901 3221
1902static void 3222static void
1903once_cb_io (EV_P_ ev_io *w, int revents) 3223once_cb_io (EV_P_ ev_io *w, int revents)
1904{ 3224{
1905 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3225 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3226
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1906} 3228}
1907 3229
1908static void 3230static void
1909once_cb_to (EV_P_ ev_timer *w, int revents) 3231once_cb_to (EV_P_ ev_timer *w, int revents)
1910{ 3232{
1911 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3233 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3234
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1912} 3236}
1913 3237
1914void 3238void
1915ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1916{ 3240{
… …
1938 ev_timer_set (&once->to, timeout, 0.); 3262 ev_timer_set (&once->to, timeout, 0.);
1939 ev_timer_start (EV_A_ &once->to); 3263 ev_timer_start (EV_A_ &once->to);
1940 } 3264 }
1941} 3265}
1942 3266
3267/*****************************************************************************/
3268
3269#if EV_WALK_ENABLE
3270void
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3272{
3273 int i, j;
3274 ev_watcher_list *wl, *wn;
3275
3276 if (types & (EV_IO | EV_EMBED))
3277 for (i = 0; i < anfdmax; ++i)
3278 for (wl = anfds [i].head; wl; )
3279 {
3280 wn = wl->next;
3281
3282#if EV_EMBED_ENABLE
3283 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3284 {
3285 if (types & EV_EMBED)
3286 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3287 }
3288 else
3289#endif
3290#if EV_USE_INOTIFY
3291 if (ev_cb ((ev_io *)wl) == infy_cb)
3292 ;
3293 else
3294#endif
3295 if ((ev_io *)wl != &pipe_w)
3296 if (types & EV_IO)
3297 cb (EV_A_ EV_IO, wl);
3298
3299 wl = wn;
3300 }
3301
3302 if (types & (EV_TIMER | EV_STAT))
3303 for (i = timercnt + HEAP0; i-- > HEAP0; )
3304#if EV_STAT_ENABLE
3305 /*TODO: timer is not always active*/
3306 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3307 {
3308 if (types & EV_STAT)
3309 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3310 }
3311 else
3312#endif
3313 if (types & EV_TIMER)
3314 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3315
3316#if EV_PERIODIC_ENABLE
3317 if (types & EV_PERIODIC)
3318 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif
3321
3322#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; )
3325 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif
3328
3329#if EV_FORK_ENABLE
3330 if (types & EV_FORK)
3331 for (i = forkcnt; i--; )
3332 if (ev_cb (forks [i]) != embed_fork_cb)
3333 cb (EV_A_ EV_FORK, forks [i]);
3334#endif
3335
3336#if EV_ASYNC_ENABLE
3337 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif
3341
3342 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]);
3348
3349 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]);
3352
3353 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i)
3355 for (wl = signals [i].head; wl; )
3356 {
3357 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn;
3360 }
3361
3362 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; )
3364 for (wl = childs [i]; wl; )
3365 {
3366 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn;
3369 }
3370/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372}
3373#endif
3374
3375#if EV_MULTIPLICITY
3376 #include "ev_wrap.h"
3377#endif
3378
1943#ifdef __cplusplus 3379#ifdef __cplusplus
1944} 3380}
1945#endif 3381#endif
1946 3382

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