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Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 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, size_t size) = realloc; 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
259 464
260void 465void
261ev_set_allocator (void *(*cb)(void *ptr, size_t size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
262{ 467{
263 alloc = cb; 468 alloc = cb;
264} 469}
265 470
266inline_speed void * 471inline_speed void *
267ev_realloc (void *ptr, size_t size) 472ev_realloc (void *ptr, long size)
268{ 473{
269 ptr = alloc (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.", (long)size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274 abort (); 479 abort ();
275 } 480 }
276 481
277 return ptr; 482 return ptr;
278} 483}
… …
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 {
… …
328 568
329ev_tstamp 569ev_tstamp
330ev_time (void) 570ev_time (void)
331{ 571{
332#if EV_USE_REALTIME 572#if EV_USE_REALTIME
573 if (expect_true (have_realtime))
574 {
333 struct timespec ts; 575 struct timespec ts;
334 clock_gettime (CLOCK_REALTIME, &ts); 576 clock_gettime (CLOCK_REALTIME, &ts);
335 return ts.tv_sec + ts.tv_nsec * 1e-9; 577 return ts.tv_sec + ts.tv_nsec * 1e-9;
336#else 578 }
579#endif
580
337 struct timeval tv; 581 struct timeval tv;
338 gettimeofday (&tv, 0); 582 gettimeofday (&tv, 0);
339 return tv.tv_sec + tv.tv_usec * 1e-6; 583 return tv.tv_sec + tv.tv_usec * 1e-6;
340#endif
341} 584}
342 585
343ev_tstamp inline_size 586inline_size ev_tstamp
344get_clock (void) 587get_clock (void)
345{ 588{
346#if EV_USE_MONOTONIC 589#if EV_USE_MONOTONIC
347 if (expect_true (have_monotonic)) 590 if (expect_true (have_monotonic))
348 { 591 {
… …
361{ 604{
362 return ev_rt_now; 605 return ev_rt_now;
363} 606}
364#endif 607#endif
365 608
366#define array_roundsize(type,n) (((n) | 4) & ~3) 609void
610ev_sleep (ev_tstamp delay)
611{
612 if (delay > 0.)
613 {
614#if EV_USE_NANOSLEEP
615 struct timespec ts;
616
617 ts.tv_sec = (time_t)delay;
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0);
621#elif defined(_WIN32)
622 Sleep ((unsigned long)(delay * 1e3));
623#else
624 struct timeval tv;
625
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */
632 select (0, 0, 0, 0, &tv);
633#endif
634 }
635}
636
637/*****************************************************************************/
638
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640
641/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */
643inline_size int
644array_nextsize (int elem, int cur, int cnt)
645{
646 int ncur = cur + 1;
647
648 do
649 ncur <<= 1;
650 while (cnt > ncur);
651
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 {
655 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4;
658 ncur /= elem;
659 }
660
661 return ncur;
662}
663
664static noinline void *
665array_realloc (int elem, void *base, int *cur, int cnt)
666{
667 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur);
669}
670
671#define array_init_zero(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count))
367 673
368#define array_needsize(type,base,cur,cnt,init) \ 674#define array_needsize(type,base,cur,cnt,init) \
369 if (expect_false ((cnt) > cur)) \ 675 if (expect_false ((cnt) > (cur))) \
370 { \ 676 { \
371 int newcnt = cur; \ 677 int ocur_ = (cur); \
372 do \ 678 (base) = (type *)array_realloc \
373 { \ 679 (sizeof (type), (base), &(cur), (cnt)); \
374 newcnt = array_roundsize (type, newcnt << 1); \ 680 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 } 681 }
382 682
683#if 0
383#define array_slim(type,stem) \ 684#define array_slim(type,stem) \
384 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 685 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385 { \ 686 { \
386 stem ## max = array_roundsize (stem ## cnt >> 1); \ 687 stem ## max = array_roundsize (stem ## cnt >> 1); \
387 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 688 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
388 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 689 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
389 } 690 }
691#endif
390 692
391#define array_free(stem, idx) \ 693#define array_free(stem, idx) \
392 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
393 695
394/*****************************************************************************/ 696/*****************************************************************************/
697
698/* dummy callback for pending events */
699static void noinline
700pendingcb (EV_P_ ev_prepare *w, int revents)
701{
702}
395 703
396void noinline 704void noinline
397ev_feed_event (EV_P_ void *w, int revents) 705ev_feed_event (EV_P_ void *w, int revents)
398{ 706{
399 W w_ = (W)w; 707 W w_ = (W)w;
708 int pri = ABSPRI (w_);
400 709
401 if (expect_false (w_->pending)) 710 if (expect_false (w_->pending))
711 pendings [pri][w_->pending - 1].events |= revents;
712 else
402 { 713 {
714 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 717 pendings [pri][w_->pending - 1].events = revents;
404 return;
405 } 718 }
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} 719}
412 720
413void inline_size 721inline_speed void
722feed_reverse (EV_P_ W w)
723{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
725 rfeeds [rfeedcnt++] = w;
726}
727
728inline_size void
729feed_reverse_done (EV_P_ int revents)
730{
731 do
732 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
733 while (rfeedcnt);
734}
735
736inline_speed void
414queue_events (EV_P_ W *events, int eventcnt, int type) 737queue_events (EV_P_ W *events, int eventcnt, int type)
415{ 738{
416 int i; 739 int i;
417 740
418 for (i = 0; i < eventcnt; ++i) 741 for (i = 0; i < eventcnt; ++i)
419 ev_feed_event (EV_A_ events [i], type); 742 ev_feed_event (EV_A_ events [i], type);
420} 743}
421 744
422/*****************************************************************************/ 745/*****************************************************************************/
423 746
424void inline_size 747inline_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) 748fd_event (EV_P_ int fd, int revents)
439{ 749{
440 ANFD *anfd = anfds + fd; 750 ANFD *anfd = anfds + fd;
441 ev_io *w; 751 ev_io *w;
442 752
… …
450} 760}
451 761
452void 762void
453ev_feed_fd_event (EV_P_ int fd, int revents) 763ev_feed_fd_event (EV_P_ int fd, int revents)
454{ 764{
765 if (fd >= 0 && fd < anfdmax)
455 fd_event (EV_A_ fd, revents); 766 fd_event (EV_A_ fd, revents);
456} 767}
457 768
458void inline_size 769/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */
771inline_size void
459fd_reify (EV_P) 772fd_reify (EV_P)
460{ 773{
461 int i; 774 int i;
462 775
463 for (i = 0; i < fdchangecnt; ++i) 776 for (i = 0; i < fdchangecnt; ++i)
464 { 777 {
465 int fd = fdchanges [i]; 778 int fd = fdchanges [i];
466 ANFD *anfd = anfds + fd; 779 ANFD *anfd = anfds + fd;
467 ev_io *w; 780 ev_io *w;
468 781
469 int events = 0; 782 unsigned char events = 0;
470 783
471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
472 events |= w->events; 785 events |= (unsigned char)w->events;
473 786
474#if EV_SELECT_IS_WINSOCKET 787#if EV_SELECT_IS_WINSOCKET
475 if (events) 788 if (events)
476 { 789 {
477 unsigned long argp; 790 unsigned long arg;
791 #ifdef EV_FD_TO_WIN32_HANDLE
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
793 #else
478 anfd->handle = _get_osfhandle (fd); 794 anfd->handle = _get_osfhandle (fd);
795 #endif
479 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
480 } 797 }
481#endif 798#endif
482 799
800 {
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
483 anfd->reify = 0; 804 anfd->reify = 0;
484
485 backend_modify (EV_A_ fd, anfd->events, events);
486 anfd->events = events; 805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events);
809 }
487 } 810 }
488 811
489 fdchangecnt = 0; 812 fdchangecnt = 0;
490} 813}
491 814
492void inline_size 815/* something about the given fd changed */
816inline_size void
493fd_change (EV_P_ int fd) 817fd_change (EV_P_ int fd, int flags)
494{ 818{
495 if (expect_false (anfds [fd].reify)) 819 unsigned char reify = anfds [fd].reify;
496 return;
497
498 anfds [fd].reify = 1; 820 anfds [fd].reify |= flags;
499 821
822 if (expect_true (!reify))
823 {
500 ++fdchangecnt; 824 ++fdchangecnt;
501 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502 fdchanges [fdchangecnt - 1] = fd; 826 fdchanges [fdchangecnt - 1] = fd;
827 }
503} 828}
504 829
505void inline_speed 830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void
506fd_kill (EV_P_ int fd) 832fd_kill (EV_P_ int fd)
507{ 833{
508 ev_io *w; 834 ev_io *w;
509 835
510 while ((w = (ev_io *)anfds [fd].head)) 836 while ((w = (ev_io *)anfds [fd].head))
… …
512 ev_io_stop (EV_A_ w); 838 ev_io_stop (EV_A_ w);
513 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
514 } 840 }
515} 841}
516 842
517int inline_size 843/* check whether the given fd is atcually valid, for error recovery */
844inline_size int
518fd_valid (int fd) 845fd_valid (int fd)
519{ 846{
520#ifdef _WIN32 847#ifdef _WIN32
521 return _get_osfhandle (fd) != -1; 848 return _get_osfhandle (fd) != -1;
522#else 849#else
… …
530{ 857{
531 int fd; 858 int fd;
532 859
533 for (fd = 0; fd < anfdmax; ++fd) 860 for (fd = 0; fd < anfdmax; ++fd)
534 if (anfds [fd].events) 861 if (anfds [fd].events)
535 if (!fd_valid (fd) == -1 && errno == EBADF) 862 if (!fd_valid (fd) && errno == EBADF)
536 fd_kill (EV_A_ fd); 863 fd_kill (EV_A_ fd);
537} 864}
538 865
539/* called on ENOMEM in select/poll to kill some fds and retry */ 866/* called on ENOMEM in select/poll to kill some fds and retry */
540static void noinline 867static void noinline
… …
554static void noinline 881static void noinline
555fd_rearm_all (EV_P) 882fd_rearm_all (EV_P)
556{ 883{
557 int fd; 884 int fd;
558 885
559 /* this should be highly optimised to not do anything but set a flag */
560 for (fd = 0; fd < anfdmax; ++fd) 886 for (fd = 0; fd < anfdmax; ++fd)
561 if (anfds [fd].events) 887 if (anfds [fd].events)
562 { 888 {
563 anfds [fd].events = 0; 889 anfds [fd].events = 0;
890 anfds [fd].emask = 0;
564 fd_change (EV_A_ fd); 891 fd_change (EV_A_ fd, EV__IOFDSET | 1);
565 } 892 }
566} 893}
567 894
568/*****************************************************************************/ 895/*****************************************************************************/
569 896
570void inline_speed 897/*
571upheap (WT *heap, int k) 898 * the heap functions want a real array index. array index 0 uis guaranteed to not
572{ 899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
573 WT w = heap [k]; 900 * the branching factor of the d-tree.
901 */
574 902
575 while (k && heap [k >> 1]->at > w->at) 903/*
576 { 904 * at the moment we allow libev the luxury of two heaps,
577 heap [k] = heap [k >> 1]; 905 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
578 ((W)heap [k])->active = k + 1; 906 * which is more cache-efficient.
579 k >>= 1; 907 * the difference is about 5% with 50000+ watchers.
580 } 908 */
909#if EV_USE_4HEAP
581 910
582 heap [k] = w; 911#define DHEAP 4
583 ((W)heap [k])->active = k + 1; 912#define HEAP0 (DHEAP - 1) /* index of first element in heap */
913#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
914#define UPHEAP_DONE(p,k) ((p) == (k))
584 915
585} 916/* away from the root */
586 917inline_speed void
587void inline_speed
588downheap (WT *heap, int N, int k) 918downheap (ANHE *heap, int N, int k)
589{ 919{
590 WT w = heap [k]; 920 ANHE he = heap [k];
921 ANHE *E = heap + N + HEAP0;
591 922
592 while (k < (N >> 1)) 923 for (;;)
593 { 924 {
594 int j = k << 1; 925 ev_tstamp minat;
926 ANHE *minpos;
927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
595 928
596 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 929 /* find minimum child */
930 if (expect_true (pos + DHEAP - 1 < E))
597 ++j; 931 {
598 932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
599 if (w->at <= heap [j]->at) 933 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
934 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
936 }
937 else if (pos < E)
938 {
939 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 }
944 else
600 break; 945 break;
601 946
947 if (ANHE_at (he) <= minat)
948 break;
949
950 heap [k] = *minpos;
951 ev_active (ANHE_w (*minpos)) = k;
952
953 k = minpos - heap;
954 }
955
956 heap [k] = he;
957 ev_active (ANHE_w (he)) = k;
958}
959
960#else /* 4HEAP */
961
962#define HEAP0 1
963#define HPARENT(k) ((k) >> 1)
964#define UPHEAP_DONE(p,k) (!(p))
965
966/* away from the root */
967inline_speed void
968downheap (ANHE *heap, int N, int k)
969{
970 ANHE he = heap [k];
971
972 for (;;)
973 {
974 int c = k << 1;
975
976 if (c > N + HEAP0 - 1)
977 break;
978
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0;
981
982 if (ANHE_at (he) <= ANHE_at (heap [c]))
983 break;
984
602 heap [k] = heap [j]; 985 heap [k] = heap [c];
603 ((W)heap [k])->active = k + 1; 986 ev_active (ANHE_w (heap [k])) = k;
987
604 k = j; 988 k = c;
605 } 989 }
606 990
607 heap [k] = w; 991 heap [k] = he;
608 ((W)heap [k])->active = k + 1; 992 ev_active (ANHE_w (he)) = k;
609} 993}
994#endif
610 995
611void inline_size 996/* towards the root */
997inline_speed void
998upheap (ANHE *heap, int k)
999{
1000 ANHE he = heap [k];
1001
1002 for (;;)
1003 {
1004 int p = HPARENT (k);
1005
1006 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1007 break;
1008
1009 heap [k] = heap [p];
1010 ev_active (ANHE_w (heap [k])) = k;
1011 k = p;
1012 }
1013
1014 heap [k] = he;
1015 ev_active (ANHE_w (he)) = k;
1016}
1017
1018/* move an element suitably so it is in a correct place */
1019inline_size void
612adjustheap (WT *heap, int N, int k) 1020adjustheap (ANHE *heap, int N, int k)
613{ 1021{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
614 upheap (heap, k); 1023 upheap (heap, k);
1024 else
615 downheap (heap, N, k); 1025 downheap (heap, N, k);
1026}
1027
1028/* rebuild the heap: this function is used only once and executed rarely */
1029inline_size void
1030reheap (ANHE *heap, int N)
1031{
1032 int i;
1033
1034 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1035 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1036 for (i = 0; i < N; ++i)
1037 upheap (heap, i + HEAP0);
616} 1038}
617 1039
618/*****************************************************************************/ 1040/*****************************************************************************/
619 1041
1042/* associate signal watchers to a signal signal */
620typedef struct 1043typedef struct
621{ 1044{
622 WL head; 1045 WL head;
623 sig_atomic_t volatile gotsig; 1046 EV_ATOMIC_T gotsig;
624} ANSIG; 1047} ANSIG;
625 1048
626static ANSIG *signals; 1049static ANSIG *signals;
627static int signalmax; 1050static int signalmax;
628 1051
629static int sigpipe [2]; 1052static EV_ATOMIC_T gotsig;
630static sig_atomic_t volatile gotsig;
631static ev_io sigev;
632 1053
633void inline_size 1054/*****************************************************************************/
634signals_init (ANSIG *base, int count)
635{
636 while (count--)
637 {
638 base->head = 0;
639 base->gotsig = 0;
640 1055
641 ++base; 1056/* used to prepare libev internal fd's */
642 } 1057/* this is not fork-safe */
643} 1058inline_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) 1059fd_intern (int fd)
698{ 1060{
699#ifdef _WIN32 1061#ifdef _WIN32
700 int arg = 1; 1062 unsigned long arg = 1;
701 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
702#else 1064#else
703 fcntl (fd, F_SETFD, FD_CLOEXEC); 1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
704 fcntl (fd, F_SETFL, O_NONBLOCK); 1066 fcntl (fd, F_SETFL, O_NONBLOCK);
705#endif 1067#endif
706} 1068}
707 1069
708static void noinline 1070static void noinline
709siginit (EV_P) 1071evpipe_init (EV_P)
710{ 1072{
1073 if (!ev_is_active (&pipe_w))
1074 {
1075#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0)
1077 {
1078 evpipe [0] = -1;
1079 fd_intern (evfd);
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 }
1082 else
1083#endif
1084 {
1085 while (pipe (evpipe))
1086 ev_syserr ("(libev) error creating signal/async pipe");
1087
711 fd_intern (sigpipe [0]); 1088 fd_intern (evpipe [0]);
712 fd_intern (sigpipe [1]); 1089 fd_intern (evpipe [1]);
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1091 }
713 1092
714 ev_io_set (&sigev, sigpipe [0], EV_READ);
715 ev_io_start (EV_A_ &sigev); 1093 ev_io_start (EV_A_ &pipe_w);
716 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116
1117 errno = old_errno;
1118 }
1119}
1120
1121/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */
1123static void
1124pipecb (EV_P_ ev_io *iow, int revents)
1125{
1126#if EV_USE_EVENTFD
1127 if (evfd >= 0)
1128 {
1129 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t));
1131 }
1132 else
1133#endif
1134 {
1135 char dummy;
1136 read (evpipe [0], &dummy, 1);
1137 }
1138
1139 if (gotsig && ev_is_default_loop (EV_A))
1140 {
1141 int signum;
1142 gotsig = 0;
1143
1144 for (signum = signalmax; signum--; )
1145 if (signals [signum].gotsig)
1146 ev_feed_signal_event (EV_A_ signum + 1);
1147 }
1148
1149#if EV_ASYNC_ENABLE
1150 if (gotasync)
1151 {
1152 int i;
1153 gotasync = 0;
1154
1155 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent)
1157 {
1158 asyncs [i]->sent = 0;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 }
1161 }
1162#endif
717} 1163}
718 1164
719/*****************************************************************************/ 1165/*****************************************************************************/
720 1166
1167static void
1168ev_sighandler (int signum)
1169{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct;
1172#endif
1173
1174#if _WIN32
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return;
1195
1196 signals [signum].gotsig = 0;
1197
1198 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200}
1201
1202/*****************************************************************************/
1203
721static ev_child *childs [EV_PID_HASHSIZE]; 1204static WL childs [EV_PID_HASHSIZE];
722 1205
723#ifndef _WIN32 1206#ifndef _WIN32
724 1207
725static ev_signal childev; 1208static ev_signal childev;
726 1209
727void inline_speed 1210#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0
1212#endif
1213
1214/* handle a single child status event */
1215inline_speed void
728child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1216child_reap (EV_P_ int chain, int pid, int status)
729{ 1217{
730 ev_child *w; 1218 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
731 1220
732 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 {
733 if (w->pid == pid || !w->pid) 1223 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1)))
734 { 1225 {
735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1226 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; 1227 w->rpid = pid;
737 w->rstatus = status; 1228 w->rstatus = status;
738 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1229 ev_feed_event (EV_A_ (W)w, EV_CHILD);
739 } 1230 }
1231 }
740} 1232}
741 1233
742#ifndef WCONTINUED 1234#ifndef WCONTINUED
743# define WCONTINUED 0 1235# define WCONTINUED 0
744#endif 1236#endif
745 1237
1238/* called on sigchld etc., calls waitpid */
746static void 1239static void
747childcb (EV_P_ ev_signal *sw, int revents) 1240childcb (EV_P_ ev_signal *sw, int revents)
748{ 1241{
749 int pid, status; 1242 int pid, status;
750 1243
… …
753 if (!WCONTINUED 1246 if (!WCONTINUED
754 || errno != EINVAL 1247 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1248 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return; 1249 return;
757 1250
758 /* make sure we are called again until all childs have been reaped */ 1251 /* 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 */ 1252 /* 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); 1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
761 1254
762 child_reap (EV_A_ sw, pid, pid, status); 1255 child_reap (EV_A_ pid, pid, status);
763 if (EV_PID_HASHSIZE > 1) 1256 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 */ 1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
765} 1258}
766 1259
767#endif 1260#endif
768 1261
769/*****************************************************************************/ 1262/*****************************************************************************/
… …
831 /* kqueue is borked on everything but netbsd apparently */ 1324 /* kqueue is borked on everything but netbsd apparently */
832 /* it usually doesn't work correctly on anything but sockets and pipes */ 1325 /* it usually doesn't work correctly on anything but sockets and pipes */
833 flags &= ~EVBACKEND_KQUEUE; 1326 flags &= ~EVBACKEND_KQUEUE;
834#endif 1327#endif
835#ifdef __APPLE__ 1328#ifdef __APPLE__
836 // flags &= ~EVBACKEND_KQUEUE; for documentation 1329 /* only select works correctly on that "unix-certified" platform */
837 flags &= ~EVBACKEND_POLL; 1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
838#endif 1332#endif
839 1333
840 return flags; 1334 return flags;
841} 1335}
842 1336
843unsigned int 1337unsigned int
844ev_embeddable_backends (void) 1338ev_embeddable_backends (void)
845{ 1339{
846 return EVBACKEND_EPOLL 1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
847 | EVBACKEND_KQUEUE 1341
848 | EVBACKEND_PORT; 1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
849} 1347}
850 1348
851unsigned int 1349unsigned int
852ev_backend (EV_P) 1350ev_backend (EV_P)
853{ 1351{
854 return backend; 1352 return backend;
855} 1353}
856 1354
857static void 1355unsigned int
1356ev_loop_count (EV_P)
1357{
1358 return loop_count;
1359}
1360
1361void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1363{
1364 io_blocktime = interval;
1365}
1366
1367void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1369{
1370 timeout_blocktime = interval;
1371}
1372
1373/* initialise a loop structure, must be zero-initialised */
1374static void noinline
858loop_init (EV_P_ unsigned int flags) 1375loop_init (EV_P_ unsigned int flags)
859{ 1376{
860 if (!backend) 1377 if (!backend)
861 { 1378 {
1379#if EV_USE_REALTIME
1380 if (!have_realtime)
1381 {
1382 struct timespec ts;
1383
1384 if (!clock_gettime (CLOCK_REALTIME, &ts))
1385 have_realtime = 1;
1386 }
1387#endif
1388
862#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
1390 if (!have_monotonic)
863 { 1391 {
864 struct timespec ts; 1392 struct timespec ts;
1393
865 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
866 have_monotonic = 1; 1395 have_monotonic = 1;
867 } 1396 }
868#endif 1397#endif
869 1398
870 ev_rt_now = ev_time (); 1399 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1400 mn_now = get_clock ();
872 now_floor = mn_now; 1401 now_floor = mn_now;
873 rtmn_diff = ev_rt_now - mn_now; 1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */
1414#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid ();
1417#endif
874 1418
875 if (!(flags & EVFLAG_NOENV) 1419 if (!(flags & EVFLAG_NOENV)
876 && !enable_secure () 1420 && !enable_secure ()
877 && getenv ("LIBEV_FLAGS")) 1421 && getenv ("LIBEV_FLAGS"))
878 flags = atoi (getenv ("LIBEV_FLAGS")); 1422 flags = atoi (getenv ("LIBEV_FLAGS"));
879 1423
880 if (!(flags & 0x0000ffffUL)) 1424 if (!(flags & 0x0000ffffU))
881 flags |= ev_recommended_backends (); 1425 flags |= ev_recommended_backends ();
882 1426
883 backend = 0;
884#if EV_USE_PORT 1427#if EV_USE_PORT
885 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886#endif 1429#endif
887#if EV_USE_KQUEUE 1430#if EV_USE_KQUEUE
888 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
895#endif 1438#endif
896#if EV_USE_SELECT 1439#if EV_USE_SELECT
897 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
898#endif 1441#endif
899 1442
1443 ev_prepare_init (&pending_w, pendingcb);
1444
900 ev_init (&sigev, sigcb); 1445 ev_init (&pipe_w, pipecb);
901 ev_set_priority (&sigev, EV_MAXPRI); 1446 ev_set_priority (&pipe_w, EV_MAXPRI);
902 } 1447 }
903} 1448}
904 1449
905static void 1450/* free up a loop structure */
1451static void noinline
906loop_destroy (EV_P) 1452loop_destroy (EV_P)
907{ 1453{
908 int i; 1454 int i;
1455
1456 if (ev_is_active (&pipe_w))
1457 {
1458 ev_ref (EV_A); /* signal watcher */
1459 ev_io_stop (EV_A_ &pipe_w);
1460
1461#if EV_USE_EVENTFD
1462 if (evfd >= 0)
1463 close (evfd);
1464#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472
1473#if EV_USE_INOTIFY
1474 if (fs_fd >= 0)
1475 close (fs_fd);
1476#endif
1477
1478 if (backend_fd >= 0)
1479 close (backend_fd);
909 1480
910#if EV_USE_PORT 1481#if EV_USE_PORT
911 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912#endif 1483#endif
913#if EV_USE_KQUEUE 1484#if EV_USE_KQUEUE
… …
922#if EV_USE_SELECT 1493#if EV_USE_SELECT
923 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1494 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924#endif 1495#endif
925 1496
926 for (i = NUMPRI; i--; ) 1497 for (i = NUMPRI; i--; )
1498 {
927 array_free (pending, [i]); 1499 array_free (pending, [i]);
1500#if EV_IDLE_ENABLE
1501 array_free (idle, [i]);
1502#endif
1503 }
1504
1505 ev_free (anfds); anfdmax = 0;
928 1506
929 /* have to use the microsoft-never-gets-it-right macro */ 1507 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY);
930 array_free (fdchange, EMPTY0); 1509 array_free (fdchange, EMPTY);
931 array_free (timer, EMPTY0); 1510 array_free (timer, EMPTY);
932#if EV_PERIODIC_ENABLE 1511#if EV_PERIODIC_ENABLE
933 array_free (periodic, EMPTY0); 1512 array_free (periodic, EMPTY);
934#endif 1513#endif
1514#if EV_FORK_ENABLE
935 array_free (idle, EMPTY0); 1515 array_free (fork, EMPTY);
1516#endif
936 array_free (prepare, EMPTY0); 1517 array_free (prepare, EMPTY);
937 array_free (check, EMPTY0); 1518 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY);
1521#endif
938 1522
939 backend = 0; 1523 backend = 0;
940} 1524}
941 1525
942static void 1526#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P);
1528#endif
1529
1530inline_size void
943loop_fork (EV_P) 1531loop_fork (EV_P)
944{ 1532{
945#if EV_USE_PORT 1533#if EV_USE_PORT
946 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947#endif 1535#endif
… …
949 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1537 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950#endif 1538#endif
951#if EV_USE_EPOLL 1539#if EV_USE_EPOLL
952 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1540 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
953#endif 1541#endif
1542#if EV_USE_INOTIFY
1543 infy_fork (EV_A);
1544#endif
954 1545
955 if (ev_is_active (&sigev)) 1546 if (ev_is_active (&pipe_w))
956 { 1547 {
957 /* default loop */ 1548 /* this "locks" the handlers against writing to the pipe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
958 1554
959 ev_ref (EV_A); 1555 ev_ref (EV_A);
960 ev_io_stop (EV_A_ &sigev); 1556 ev_io_stop (EV_A_ &pipe_w);
1557
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0)
1564 {
961 close (sigpipe [0]); 1565 close (evpipe [0]);
962 close (sigpipe [1]); 1566 close (evpipe [1]);
1567 }
963 1568
964 while (pipe (sigpipe))
965 syserr ("(libev) error creating pipe");
966
967 siginit (EV_A); 1569 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */
1571 pipecb (EV_A_ &pipe_w, EV_READ);
968 } 1572 }
969 1573
970 postfork = 0; 1574 postfork = 0;
971} 1575}
972 1576
973#if EV_MULTIPLICITY 1577#if EV_MULTIPLICITY
1578
974struct ev_loop * 1579struct ev_loop *
975ev_loop_new (unsigned int flags) 1580ev_loop_new (unsigned int flags)
976{ 1581{
977 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
978 1583
… …
994} 1599}
995 1600
996void 1601void
997ev_loop_fork (EV_P) 1602ev_loop_fork (EV_P)
998{ 1603{
999 postfork = 1; 1604 postfork = 1; /* must be in line with ev_default_fork */
1000} 1605}
1001 1606
1607#if EV_VERIFY
1608static void noinline
1609verify_watcher (EV_P_ W w)
1610{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612
1613 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615}
1616
1617static void noinline
1618verify_heap (EV_P_ ANHE *heap, int N)
1619{
1620 int i;
1621
1622 for (i = HEAP0; i < N + HEAP0; ++i)
1623 {
1624 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1625 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1626 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1627
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 }
1630}
1631
1632static void noinline
1633array_verify (EV_P_ W *ws, int cnt)
1634{
1635 while (cnt--)
1636 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]);
1639 }
1640}
1641#endif
1642
1643void
1644ev_loop_verify (EV_P)
1645{
1646#if EV_VERIFY
1647 int i;
1648 WL w;
1649
1650 assert (activecnt >= -1);
1651
1652 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655
1656 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i)
1658 for (w = anfds [i].head; w; w = w->next)
1659 {
1660 verify_watcher (EV_A_ (W)w);
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 }
1664
1665 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt);
1667
1668#if EV_PERIODIC_ENABLE
1669 assert (periodicmax >= periodiccnt);
1670 verify_heap (EV_A_ periodics, periodiccnt);
1671#endif
1672
1673 for (i = NUMPRI; i--; )
1674 {
1675 assert (pendingmax [i] >= pendingcnt [i]);
1676#if EV_IDLE_ENABLE
1677 assert (idleall >= 0);
1678 assert (idlemax [i] >= idlecnt [i]);
1679 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1680#endif
1681 }
1682
1683#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif
1687
1688#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif
1692
1693 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt);
1695
1696 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt);
1698
1699# if 0
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1002#endif 1702# endif
1703#endif
1704}
1705
1706#endif /* multiplicity */
1003 1707
1004#if EV_MULTIPLICITY 1708#if EV_MULTIPLICITY
1005struct ev_loop * 1709struct ev_loop *
1006ev_default_loop_init (unsigned int flags) 1710ev_default_loop_init (unsigned int flags)
1007#else 1711#else
1008int 1712int
1009ev_default_loop (unsigned int flags) 1713ev_default_loop (unsigned int flags)
1010#endif 1714#endif
1011{ 1715{
1012 if (sigpipe [0] == sigpipe [1])
1013 if (pipe (sigpipe))
1014 return 0;
1015
1016 if (!ev_default_loop_ptr) 1716 if (!ev_default_loop_ptr)
1017 { 1717 {
1018#if EV_MULTIPLICITY 1718#if EV_MULTIPLICITY
1019 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1020#else 1720#else
… …
1023 1723
1024 loop_init (EV_A_ flags); 1724 loop_init (EV_A_ flags);
1025 1725
1026 if (ev_backend (EV_A)) 1726 if (ev_backend (EV_A))
1027 { 1727 {
1028 siginit (EV_A);
1029
1030#ifndef _WIN32 1728#ifndef _WIN32
1031 ev_signal_init (&childev, childcb, SIGCHLD); 1729 ev_signal_init (&childev, childcb, SIGCHLD);
1032 ev_set_priority (&childev, EV_MAXPRI); 1730 ev_set_priority (&childev, EV_MAXPRI);
1033 ev_signal_start (EV_A_ &childev); 1731 ev_signal_start (EV_A_ &childev);
1034 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1732 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1046{ 1744{
1047#if EV_MULTIPLICITY 1745#if EV_MULTIPLICITY
1048 struct ev_loop *loop = ev_default_loop_ptr; 1746 struct ev_loop *loop = ev_default_loop_ptr;
1049#endif 1747#endif
1050 1748
1749 ev_default_loop_ptr = 0;
1750
1051#ifndef _WIN32 1751#ifndef _WIN32
1052 ev_ref (EV_A); /* child watcher */ 1752 ev_ref (EV_A); /* child watcher */
1053 ev_signal_stop (EV_A_ &childev); 1753 ev_signal_stop (EV_A_ &childev);
1054#endif 1754#endif
1055 1755
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); 1756 loop_destroy (EV_A);
1063} 1757}
1064 1758
1065void 1759void
1066ev_default_fork (void) 1760ev_default_fork (void)
1067{ 1761{
1068#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1069 struct ev_loop *loop = ev_default_loop_ptr; 1763 struct ev_loop *loop = ev_default_loop_ptr;
1070#endif 1764#endif
1071 1765
1072 if (backend) 1766 postfork = 1; /* must be in line with ev_loop_fork */
1073 postfork = 1;
1074} 1767}
1075 1768
1076/*****************************************************************************/ 1769/*****************************************************************************/
1077 1770
1078int inline_size 1771void
1079any_pending (EV_P) 1772ev_invoke (EV_P_ void *w, int revents)
1080{ 1773{
1081 int pri; 1774 EV_CB_INVOKE ((W)w, revents);
1082
1083 for (pri = NUMPRI; pri--; )
1084 if (pendingcnt [pri])
1085 return 1;
1086
1087 return 0;
1088} 1775}
1089 1776
1090void inline_speed 1777inline_speed void
1091call_pending (EV_P) 1778call_pending (EV_P)
1092{ 1779{
1093 int pri; 1780 int pri;
1094 1781
1095 for (pri = NUMPRI; pri--; ) 1782 for (pri = NUMPRI; pri--; )
1096 while (pendingcnt [pri]) 1783 while (pendingcnt [pri])
1097 { 1784 {
1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099 1786
1100 if (expect_true (p->w))
1101 {
1102 assert (("non-pending watcher on pending list", p->w->pending)); 1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1103 1789
1104 p->w->pending = 0; 1790 p->w->pending = 0;
1105 EV_CB_INVOKE (p->w, p->events); 1791 EV_CB_INVOKE (p->w, p->events);
1106 } 1792 EV_FREQUENT_CHECK;
1107 } 1793 }
1108} 1794}
1109 1795
1110void inline_size 1796#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */
1799inline_size void
1800idle_reify (EV_P)
1801{
1802 if (expect_false (idleall))
1803 {
1804 int pri;
1805
1806 for (pri = NUMPRI; pri--; )
1807 {
1808 if (pendingcnt [pri])
1809 break;
1810
1811 if (idlecnt [pri])
1812 {
1813 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1814 break;
1815 }
1816 }
1817 }
1818}
1819#endif
1820
1821/* make timers pending */
1822inline_size void
1111timers_reify (EV_P) 1823timers_reify (EV_P)
1112{ 1824{
1825 EV_FREQUENT_CHECK;
1826
1113 while (timercnt && ((WT)timers [0])->at <= mn_now) 1827 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1114 { 1828 {
1115 ev_timer *w = timers [0]; 1829 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 { 1830 {
1831 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1832
1833 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1834
1835 /* first reschedule or stop timer */
1836 if (w->repeat)
1837 {
1838 ev_at (w) += w->repeat;
1839 if (ev_at (w) < mn_now)
1840 ev_at (w) = mn_now;
1841
1122 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1842 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123 1843
1124 ((WT)w)->at += w->repeat; 1844 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); 1845 downheap (timers, timercnt, HEAP0);
1846 }
1847 else
1848 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1849
1850 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w);
1129 } 1852 }
1130 else 1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1131 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132 1854
1133 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1855 feed_reverse_done (EV_A_ EV_TIMEOUT);
1134 } 1856 }
1135} 1857}
1136 1858
1137#if EV_PERIODIC_ENABLE 1859#if EV_PERIODIC_ENABLE
1138void inline_size 1860/* make periodics pending */
1861inline_size void
1139periodics_reify (EV_P) 1862periodics_reify (EV_P)
1140{ 1863{
1864 EV_FREQUENT_CHECK;
1865
1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1142 { 1867 {
1143 ev_periodic *w = periodics [0]; 1868 int feed_count = 0;
1144 1869
1145 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1870 do
1146
1147 /* first reschedule or stop timer */
1148 if (w->reschedule_cb)
1149 { 1871 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1875
1876 /* first reschedule or stop timer */
1877 if (w->reschedule_cb)
1878 {
1150 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1879 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1880
1151 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1881 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1882
1883 ANHE_at_cache (periodics [HEAP0]);
1152 downheap ((WT *)periodics, periodiccnt, 0); 1884 downheap (periodics, periodiccnt, HEAP0);
1885 }
1886 else if (w->interval)
1887 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0);
1904 }
1905 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1907
1908 EV_FREQUENT_CHECK;
1909 feed_reverse (EV_A_ (W)w);
1153 } 1910 }
1154 else if (w->interval) 1911 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 1912
1163 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1913 feed_reverse_done (EV_A_ EV_PERIODIC);
1164 } 1914 }
1165} 1915}
1166 1916
1917/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1167static void noinline 1919static void noinline
1168periodics_reschedule (EV_P) 1920periodics_reschedule (EV_P)
1169{ 1921{
1170 int i; 1922 int i;
1171 1923
1172 /* adjust periodics after time jump */ 1924 /* adjust periodics after time jump */
1173 for (i = 0; i < periodiccnt; ++i) 1925 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1174 { 1926 {
1175 ev_periodic *w = periodics [i]; 1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1176 1928
1177 if (w->reschedule_cb) 1929 if (w->reschedule_cb)
1178 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1179 else if (w->interval) 1931 else if (w->interval)
1180 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1933
1934 ANHE_at_cache (periodics [i]);
1935 }
1936
1937 reheap (periodics, periodiccnt);
1938}
1939#endif
1940
1941/* adjust all timers by a given offset */
1942static void noinline
1943timers_reschedule (EV_P_ ev_tstamp adjust)
1944{
1945 int i;
1946
1947 for (i = 0; i < timercnt; ++i)
1181 } 1948 {
1182 1949 ANHE *he = timers + i + HEAP0;
1183 /* now rebuild the heap */ 1950 ANHE_w (*he)->at += adjust;
1184 for (i = periodiccnt >> 1; i--; ) 1951 ANHE_at_cache (*he);
1185 downheap ((WT *)periodics, periodiccnt, i); 1952 }
1186} 1953}
1187#endif
1188 1954
1189int inline_size 1955/* fetch new monotonic and realtime times from the kernel */
1190time_update_monotonic (EV_P) 1956/* also detetc if there was a timejump, and act accordingly */
1957inline_speed void
1958time_update (EV_P_ ev_tstamp max_block)
1191{ 1959{
1960#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic))
1962 {
1963 int i;
1964 ev_tstamp odiff = rtmn_diff;
1965
1192 mn_now = get_clock (); 1966 mn_now = get_clock ();
1193 1967
1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1969 /* interpolate in the meantime */
1194 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1970 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195 { 1971 {
1196 ev_rt_now = rtmn_diff + mn_now; 1972 ev_rt_now = rtmn_diff + mn_now;
1197 return 0; 1973 return;
1198 } 1974 }
1199 else 1975
1200 {
1201 now_floor = mn_now; 1976 now_floor = mn_now;
1202 ev_rt_now = ev_time (); 1977 ev_rt_now = ev_time ();
1203 return 1;
1204 }
1205}
1206 1978
1207void inline_size 1979 /* loop a few times, before making important decisions.
1208time_update (EV_P) 1980 * on the choice of "4": one iteration isn't enough,
1209{ 1981 * in case we get preempted during the calls to
1210 int i; 1982 * ev_time and get_clock. a second call is almost guaranteed
1211 1983 * to succeed in that case, though. and looping a few more times
1212#if EV_USE_MONOTONIC 1984 * doesn't hurt either as we only do this on time-jumps or
1213 if (expect_true (have_monotonic)) 1985 * in the unlikely event of having been preempted here.
1214 { 1986 */
1215 if (time_update_monotonic (EV_A)) 1987 for (i = 4; --i; )
1216 { 1988 {
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; 1989 rtmn_diff = ev_rt_now - mn_now;
1230 1990
1231 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1232 return; /* all is well */ 1992 return; /* all is well */
1233 1993
1234 ev_rt_now = ev_time (); 1994 ev_rt_now = ev_time ();
1235 mn_now = get_clock (); 1995 mn_now = get_clock ();
1236 now_floor = mn_now; 1996 now_floor = mn_now;
1237 } 1997 }
1238 1998
1999 /* no timer adjustment, as the monotonic clock doesn't jump */
2000 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1239# if EV_PERIODIC_ENABLE 2001# if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 2002 periodics_reschedule (EV_A);
1241# endif 2003# endif
1242 /* no timer adjustment, as the monotonic clock doesn't jump */
1243 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244 }
1245 } 2004 }
1246 else 2005 else
1247#endif 2006#endif
1248 { 2007 {
1249 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1250 2009
1251 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2010 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252 { 2011 {
2012 /* adjust timers. this is easy, as the offset is the same for all of them */
2013 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1253#if EV_PERIODIC_ENABLE 2014#if EV_PERIODIC_ENABLE
1254 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1255#endif 2016#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 } 2017 }
1261 2018
1262 mn_now = ev_rt_now; 2019 mn_now = ev_rt_now;
1263 } 2020 }
1264} 2021}
1265 2022
1266void
1267ev_ref (EV_P)
1268{
1269 ++activecnt;
1270}
1271
1272void
1273ev_unref (EV_P)
1274{
1275 --activecnt;
1276}
1277
1278static int loop_done; 2023static int loop_done;
1279 2024
1280void 2025void
1281ev_loop (EV_P_ int flags) 2026ev_loop (EV_P_ int flags)
1282{ 2027{
1283 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2028 loop_done = EVUNLOOP_CANCEL;
1284 ? EVUNLOOP_ONE
1285 : EVUNLOOP_CANCEL;
1286 2029
1287 while (activecnt) 2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
2031
2032 do
1288 { 2033 {
1289 /* we might have forked, so reify kernel state if necessary */ 2034#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A);
2036#endif
2037
2038#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid))
2041 {
2042 curpid = getpid ();
2043 postfork = 1;
2044 }
2045#endif
2046
1290 #if EV_FORK_ENABLE 2047#if EV_FORK_ENABLE
2048 /* we might have forked, so queue fork handlers */
1291 if (expect_false (postfork)) 2049 if (expect_false (postfork))
1292 if (forkcnt) 2050 if (forkcnt)
1293 { 2051 {
1294 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295 call_pending (EV_A); 2053 call_pending (EV_A);
1296 } 2054 }
1297 #endif 2055#endif
1298 2056
1299 /* queue check watchers (and execute them) */ 2057 /* queue prepare watchers (and execute them) */
1300 if (expect_false (preparecnt)) 2058 if (expect_false (preparecnt))
1301 { 2059 {
1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303 call_pending (EV_A); 2061 call_pending (EV_A);
1304 } 2062 }
… …
1310 /* update fd-related kernel structures */ 2068 /* update fd-related kernel structures */
1311 fd_reify (EV_A); 2069 fd_reify (EV_A);
1312 2070
1313 /* calculate blocking time */ 2071 /* calculate blocking time */
1314 { 2072 {
1315 double block; 2073 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.;
1316 2075
1317 if (flags & EVLOOP_NONBLOCK || idlecnt) 2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1318 block = 0.; /* do not block at all */
1319 else
1320 { 2077 {
1321 /* update time to cancel out callback processing overhead */ 2078 /* 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); 2079 time_update (EV_A_ 1e100);
1325 else
1326#endif
1327 {
1328 ev_rt_now = ev_time ();
1329 mn_now = ev_rt_now;
1330 }
1331 2080
1332 block = MAX_BLOCKTIME; 2081 waittime = MAX_BLOCKTIME;
1333 2082
1334 if (timercnt) 2083 if (timercnt)
1335 { 2084 {
1336 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1337 if (block > to) block = to; 2086 if (waittime > to) waittime = to;
1338 } 2087 }
1339 2088
1340#if EV_PERIODIC_ENABLE 2089#if EV_PERIODIC_ENABLE
1341 if (periodiccnt) 2090 if (periodiccnt)
1342 { 2091 {
1343 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1344 if (block > to) block = to; 2093 if (waittime > to) waittime = to;
1345 } 2094 }
1346#endif 2095#endif
1347 2096
1348 if (expect_false (block < 0.)) block = 0.; 2097 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime;
2099
2100 sleeptime = waittime - backend_fudge;
2101
2102 if (expect_true (sleeptime > io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 {
2107 ev_sleep (sleeptime);
2108 waittime -= sleeptime;
2109 }
1349 } 2110 }
1350 2111
2112 ++loop_count;
1351 backend_poll (EV_A_ block); 2113 backend_poll (EV_A_ waittime);
2114
2115 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime);
1352 } 2117 }
1353
1354 /* update ev_rt_now, do magic */
1355 time_update (EV_A);
1356 2118
1357 /* queue pending timers and reschedule them */ 2119 /* queue pending timers and reschedule them */
1358 timers_reify (EV_A); /* relative timers called last */ 2120 timers_reify (EV_A); /* relative timers called last */
1359#if EV_PERIODIC_ENABLE 2121#if EV_PERIODIC_ENABLE
1360 periodics_reify (EV_A); /* absolute timers called first */ 2122 periodics_reify (EV_A); /* absolute timers called first */
1361#endif 2123#endif
1362 2124
2125#if EV_IDLE_ENABLE
1363 /* queue idle watchers unless other events are pending */ 2126 /* queue idle watchers unless other events are pending */
1364 if (idlecnt && !any_pending (EV_A)) 2127 idle_reify (EV_A);
1365 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2128#endif
1366 2129
1367 /* queue check watchers, to be executed first */ 2130 /* queue check watchers, to be executed first */
1368 if (expect_false (checkcnt)) 2131 if (expect_false (checkcnt))
1369 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370 2133
1371 call_pending (EV_A); 2134 call_pending (EV_A);
1372
1373 if (expect_false (loop_done))
1374 break;
1375 } 2135 }
2136 while (expect_true (
2137 activecnt
2138 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2140 ));
1376 2141
1377 if (loop_done == EVUNLOOP_ONE) 2142 if (loop_done == EVUNLOOP_ONE)
1378 loop_done = EVUNLOOP_CANCEL; 2143 loop_done = EVUNLOOP_CANCEL;
1379} 2144}
1380 2145
… …
1382ev_unloop (EV_P_ int how) 2147ev_unloop (EV_P_ int how)
1383{ 2148{
1384 loop_done = how; 2149 loop_done = how;
1385} 2150}
1386 2151
2152void
2153ev_ref (EV_P)
2154{
2155 ++activecnt;
2156}
2157
2158void
2159ev_unref (EV_P)
2160{
2161 --activecnt;
2162}
2163
2164void
2165ev_now_update (EV_P)
2166{
2167 time_update (EV_A_ 1e100);
2168}
2169
2170void
2171ev_suspend (EV_P)
2172{
2173 ev_now_update (EV_A);
2174}
2175
2176void
2177ev_resume (EV_P)
2178{
2179 ev_tstamp mn_prev = mn_now;
2180
2181 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev);
2183#if EV_PERIODIC_ENABLE
2184 /* TODO: really do this? */
2185 periodics_reschedule (EV_A);
2186#endif
2187}
2188
1387/*****************************************************************************/ 2189/*****************************************************************************/
2190/* singly-linked list management, used when the expected list length is short */
1388 2191
1389void inline_size 2192inline_size void
1390wlist_add (WL *head, WL elem) 2193wlist_add (WL *head, WL elem)
1391{ 2194{
1392 elem->next = *head; 2195 elem->next = *head;
1393 *head = elem; 2196 *head = elem;
1394} 2197}
1395 2198
1396void inline_size 2199inline_size void
1397wlist_del (WL *head, WL elem) 2200wlist_del (WL *head, WL elem)
1398{ 2201{
1399 while (*head) 2202 while (*head)
1400 { 2203 {
1401 if (*head == elem) 2204 if (*head == elem)
… …
1406 2209
1407 head = &(*head)->next; 2210 head = &(*head)->next;
1408 } 2211 }
1409} 2212}
1410 2213
1411void inline_speed 2214/* internal, faster, version of ev_clear_pending */
2215inline_speed void
1412ev_clear_pending (EV_P_ W w) 2216clear_pending (EV_P_ W w)
1413{ 2217{
1414 if (w->pending) 2218 if (w->pending)
1415 { 2219 {
1416 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2220 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1417 w->pending = 0; 2221 w->pending = 0;
1418 } 2222 }
1419} 2223}
1420 2224
1421void inline_speed 2225int
2226ev_clear_pending (EV_P_ void *w)
2227{
2228 W w_ = (W)w;
2229 int pending = w_->pending;
2230
2231 if (expect_true (pending))
2232 {
2233 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2234 p->w = (W)&pending_w;
2235 w_->pending = 0;
2236 return p->events;
2237 }
2238 else
2239 return 0;
2240}
2241
2242inline_size void
2243pri_adjust (EV_P_ W w)
2244{
2245 int pri = w->priority;
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri;
2249}
2250
2251inline_speed void
1422ev_start (EV_P_ W w, int active) 2252ev_start (EV_P_ W w, int active)
1423{ 2253{
1424 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2254 pri_adjust (EV_A_ w);
1425 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427 w->active = active; 2255 w->active = active;
1428 ev_ref (EV_A); 2256 ev_ref (EV_A);
1429} 2257}
1430 2258
1431void inline_size 2259inline_size void
1432ev_stop (EV_P_ W w) 2260ev_stop (EV_P_ W w)
1433{ 2261{
1434 ev_unref (EV_A); 2262 ev_unref (EV_A);
1435 w->active = 0; 2263 w->active = 0;
1436} 2264}
1437 2265
1438/*****************************************************************************/ 2266/*****************************************************************************/
1439 2267
1440void 2268void noinline
1441ev_io_start (EV_P_ ev_io *w) 2269ev_io_start (EV_P_ ev_io *w)
1442{ 2270{
1443 int fd = w->fd; 2271 int fd = w->fd;
1444 2272
1445 if (expect_false (ev_is_active (w))) 2273 if (expect_false (ev_is_active (w)))
1446 return; 2274 return;
1447 2275
1448 assert (("ev_io_start called with negative fd", fd >= 0)); 2276 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278
2279 EV_FREQUENT_CHECK;
1449 2280
1450 ev_start (EV_A_ (W)w, 1); 2281 ev_start (EV_A_ (W)w, 1);
1451 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1452 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2283 wlist_add (&anfds[fd].head, (WL)w);
1453 2284
1454 fd_change (EV_A_ fd); 2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1455} 2286 w->events &= ~EV__IOFDSET;
1456 2287
1457void 2288 EV_FREQUENT_CHECK;
2289}
2290
2291void noinline
1458ev_io_stop (EV_P_ ev_io *w) 2292ev_io_stop (EV_P_ ev_io *w)
1459{ 2293{
1460 ev_clear_pending (EV_A_ (W)w); 2294 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 2295 if (expect_false (!ev_is_active (w)))
1462 return; 2296 return;
1463 2297
1464 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2298 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465 2299
2300 EV_FREQUENT_CHECK;
2301
1466 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2302 wlist_del (&anfds[w->fd].head, (WL)w);
1467 ev_stop (EV_A_ (W)w); 2303 ev_stop (EV_A_ (W)w);
1468 2304
1469 fd_change (EV_A_ w->fd); 2305 fd_change (EV_A_ w->fd, 1);
1470}
1471 2306
1472void 2307 EV_FREQUENT_CHECK;
2308}
2309
2310void noinline
1473ev_timer_start (EV_P_ ev_timer *w) 2311ev_timer_start (EV_P_ ev_timer *w)
1474{ 2312{
1475 if (expect_false (ev_is_active (w))) 2313 if (expect_false (ev_is_active (w)))
1476 return; 2314 return;
1477 2315
1478 ((WT)w)->at += mn_now; 2316 ev_at (w) += mn_now;
1479 2317
1480 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2318 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481 2319
2320 EV_FREQUENT_CHECK;
2321
2322 ++timercnt;
1482 ev_start (EV_A_ (W)w, ++timercnt); 2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1483 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1484 timers [timercnt - 1] = w; 2325 ANHE_w (timers [ev_active (w)]) = (WT)w;
1485 upheap ((WT *)timers, timercnt - 1); 2326 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w));
1486 2328
2329 EV_FREQUENT_CHECK;
2330
1487 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1488} 2332}
1489 2333
1490void 2334void noinline
1491ev_timer_stop (EV_P_ ev_timer *w) 2335ev_timer_stop (EV_P_ ev_timer *w)
1492{ 2336{
1493 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1494 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
1495 return; 2339 return;
1496 2340
2341 EV_FREQUENT_CHECK;
2342
2343 {
2344 int active = ev_active (w);
2345
1497 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1498 2347
2348 --timercnt;
2349
1499 if (expect_true (((W)w)->active < timercnt--)) 2350 if (expect_true (active < timercnt + HEAP0))
1500 { 2351 {
1501 timers [((W)w)->active - 1] = timers [timercnt]; 2352 timers [active] = timers [timercnt + HEAP0];
1502 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2353 adjustheap (timers, timercnt, active);
1503 } 2354 }
2355 }
1504 2356
1505 ((WT)w)->at -= mn_now; 2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now;
1506 2360
1507 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1508} 2362}
1509 2363
1510void 2364void noinline
1511ev_timer_again (EV_P_ ev_timer *w) 2365ev_timer_again (EV_P_ ev_timer *w)
1512{ 2366{
2367 EV_FREQUENT_CHECK;
2368
1513 if (ev_is_active (w)) 2369 if (ev_is_active (w))
1514 { 2370 {
1515 if (w->repeat) 2371 if (w->repeat)
1516 { 2372 {
1517 ((WT)w)->at = mn_now + w->repeat; 2373 ev_at (w) = mn_now + w->repeat;
2374 ANHE_at_cache (timers [ev_active (w)]);
1518 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2375 adjustheap (timers, timercnt, ev_active (w));
1519 } 2376 }
1520 else 2377 else
1521 ev_timer_stop (EV_A_ w); 2378 ev_timer_stop (EV_A_ w);
1522 } 2379 }
1523 else if (w->repeat) 2380 else if (w->repeat)
1524 { 2381 {
1525 w->at = w->repeat; 2382 ev_at (w) = w->repeat;
1526 ev_timer_start (EV_A_ w); 2383 ev_timer_start (EV_A_ w);
1527 } 2384 }
2385
2386 EV_FREQUENT_CHECK;
1528} 2387}
1529 2388
1530#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
1531void 2390void noinline
1532ev_periodic_start (EV_P_ ev_periodic *w) 2391ev_periodic_start (EV_P_ ev_periodic *w)
1533{ 2392{
1534 if (expect_false (ev_is_active (w))) 2393 if (expect_false (ev_is_active (w)))
1535 return; 2394 return;
1536 2395
1537 if (w->reschedule_cb) 2396 if (w->reschedule_cb)
1538 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1539 else if (w->interval) 2398 else if (w->interval)
1540 { 2399 {
1541 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2400 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 */ 2401 /* 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; 2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544 } 2403 }
2404 else
2405 ev_at (w) = w->offset;
1545 2406
2407 EV_FREQUENT_CHECK;
2408
2409 ++periodiccnt;
1546 ev_start (EV_A_ (W)w, ++periodiccnt); 2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1547 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1548 periodics [periodiccnt - 1] = w; 2412 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1549 upheap ((WT *)periodics, periodiccnt - 1); 2413 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w));
1550 2415
2416 EV_FREQUENT_CHECK;
2417
1551 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1552} 2419}
1553 2420
1554void 2421void noinline
1555ev_periodic_stop (EV_P_ ev_periodic *w) 2422ev_periodic_stop (EV_P_ ev_periodic *w)
1556{ 2423{
1557 ev_clear_pending (EV_A_ (W)w); 2424 clear_pending (EV_A_ (W)w);
1558 if (expect_false (!ev_is_active (w))) 2425 if (expect_false (!ev_is_active (w)))
1559 return; 2426 return;
1560 2427
2428 EV_FREQUENT_CHECK;
2429
2430 {
2431 int active = ev_active (w);
2432
1561 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1562 2434
2435 --periodiccnt;
2436
1563 if (expect_true (((W)w)->active < periodiccnt--)) 2437 if (expect_true (active < periodiccnt + HEAP0))
1564 { 2438 {
1565 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2439 periodics [active] = periodics [periodiccnt + HEAP0];
1566 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2440 adjustheap (periodics, periodiccnt, active);
1567 } 2441 }
2442 }
2443
2444 EV_FREQUENT_CHECK;
1568 2445
1569 ev_stop (EV_A_ (W)w); 2446 ev_stop (EV_A_ (W)w);
1570} 2447}
1571 2448
1572void 2449void noinline
1573ev_periodic_again (EV_P_ ev_periodic *w) 2450ev_periodic_again (EV_P_ ev_periodic *w)
1574{ 2451{
1575 /* TODO: use adjustheap and recalculation */ 2452 /* TODO: use adjustheap and recalculation */
1576 ev_periodic_stop (EV_A_ w); 2453 ev_periodic_stop (EV_A_ w);
1577 ev_periodic_start (EV_A_ w); 2454 ev_periodic_start (EV_A_ w);
… …
1580 2457
1581#ifndef SA_RESTART 2458#ifndef SA_RESTART
1582# define SA_RESTART 0 2459# define SA_RESTART 0
1583#endif 2460#endif
1584 2461
1585void 2462void noinline
1586ev_signal_start (EV_P_ ev_signal *w) 2463ev_signal_start (EV_P_ ev_signal *w)
1587{ 2464{
1588#if EV_MULTIPLICITY 2465#if EV_MULTIPLICITY
1589 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590#endif 2467#endif
1591 if (expect_false (ev_is_active (w))) 2468 if (expect_false (ev_is_active (w)))
1592 return; 2469 return;
1593 2470
1594 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2472
2473 evpipe_init (EV_A);
2474
2475 EV_FREQUENT_CHECK;
2476
2477 {
2478#ifndef _WIN32
2479 sigset_t full, prev;
2480 sigfillset (&full);
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2485
2486#ifndef _WIN32
2487 sigprocmask (SIG_SETMASK, &prev, 0);
2488#endif
2489 }
1595 2490
1596 ev_start (EV_A_ (W)w, 1); 2491 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); 2492 wlist_add (&signals [w->signum - 1].head, (WL)w);
1599 2493
1600 if (!((WL)w)->next) 2494 if (!((WL)w)->next)
1601 { 2495 {
1602#if _WIN32 2496#if _WIN32
1603 signal (w->signum, sighandler); 2497 signal (w->signum, ev_sighandler);
1604#else 2498#else
1605 struct sigaction sa; 2499 struct sigaction sa;
1606 sa.sa_handler = sighandler; 2500 sa.sa_handler = ev_sighandler;
1607 sigfillset (&sa.sa_mask); 2501 sigfillset (&sa.sa_mask);
1608 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1609 sigaction (w->signum, &sa, 0); 2503 sigaction (w->signum, &sa, 0);
1610#endif 2504#endif
1611 } 2505 }
1612}
1613 2506
1614void 2507 EV_FREQUENT_CHECK;
2508}
2509
2510void noinline
1615ev_signal_stop (EV_P_ ev_signal *w) 2511ev_signal_stop (EV_P_ ev_signal *w)
1616{ 2512{
1617 ev_clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
1618 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
1619 return; 2515 return;
1620 2516
2517 EV_FREQUENT_CHECK;
2518
1621 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2519 wlist_del (&signals [w->signum - 1].head, (WL)w);
1622 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
1623 2521
1624 if (!signals [w->signum - 1].head) 2522 if (!signals [w->signum - 1].head)
1625 signal (w->signum, SIG_DFL); 2523 signal (w->signum, SIG_DFL);
2524
2525 EV_FREQUENT_CHECK;
1626} 2526}
1627 2527
1628void 2528void
1629ev_child_start (EV_P_ ev_child *w) 2529ev_child_start (EV_P_ ev_child *w)
1630{ 2530{
1631#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
1632 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1633#endif 2533#endif
1634 if (expect_false (ev_is_active (w))) 2534 if (expect_false (ev_is_active (w)))
1635 return; 2535 return;
1636 2536
2537 EV_FREQUENT_CHECK;
2538
1637 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
1638 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2541
2542 EV_FREQUENT_CHECK;
1639} 2543}
1640 2544
1641void 2545void
1642ev_child_stop (EV_P_ ev_child *w) 2546ev_child_stop (EV_P_ ev_child *w)
1643{ 2547{
1644 ev_clear_pending (EV_A_ (W)w); 2548 clear_pending (EV_A_ (W)w);
1645 if (expect_false (!ev_is_active (w))) 2549 if (expect_false (!ev_is_active (w)))
1646 return; 2550 return;
1647 2551
2552 EV_FREQUENT_CHECK;
2553
1648 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
2556
2557 EV_FREQUENT_CHECK;
1650} 2558}
1651 2559
1652#if EV_STAT_ENABLE 2560#if EV_STAT_ENABLE
1653 2561
1654# ifdef _WIN32 2562# ifdef _WIN32
1655# undef lstat 2563# undef lstat
1656# define lstat(a,b) _stati64 (a,b) 2564# define lstat(a,b) _stati64 (a,b)
1657# endif 2565# endif
1658 2566
1659#define DEF_STAT_INTERVAL 5.0074891 2567#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1660#define MIN_STAT_INTERVAL 0.1074891 2569#define MIN_STAT_INTERVAL 0.1074891
2570
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572
2573#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575
2576static void noinline
2577infy_add (EV_P_ ev_stat *w)
2578{
2579 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);
2580
2581 if (w->wd < 0)
2582 {
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585
2586 /* monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 {
2591 char path [4096];
2592 strcpy (path, w->path);
2593
2594 do
2595 {
2596 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2597 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2598
2599 char *pend = strrchr (path, '/');
2600
2601 if (!pend || pend == path)
2602 break;
2603
2604 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 }
2609 }
2610
2611 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2614
2615 /* now local changes will be tracked by inotify, but remote changes won't */
2616 /* unless the filesystem it known to be local, we therefore still poll */
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer);
2631 }
2632}
2633
2634static void noinline
2635infy_del (EV_P_ ev_stat *w)
2636{
2637 int slot;
2638 int wd = w->wd;
2639
2640 if (wd < 0)
2641 return;
2642
2643 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w);
2646
2647 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd);
2649}
2650
2651static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{
2654 if (slot < 0)
2655 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2657 infy_wd (EV_A_ slot, wd, ev);
2658 else
2659 {
2660 WL w_;
2661
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2663 {
2664 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */
2666
2667 if (w->wd == wd || wd == -1)
2668 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2672 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */
2674 }
2675
2676 stat_timer_cb (EV_A_ &w->timer, 0);
2677 }
2678 }
2679 }
2680}
2681
2682static void
2683infy_cb (EV_P_ ev_io *w, int revents)
2684{
2685 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf));
2689
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2692}
2693
2694inline_size void
2695check_2625 (EV_P)
2696{
2697 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */
2700 struct utsname buf;
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return;
2705
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1;
2715}
2716
2717inline_size void
2718infy_init (EV_P)
2719{
2720 if (fs_fd != -2)
2721 return;
2722
2723 fs_fd = -1;
2724
2725 check_2625 (EV_A);
2726
2727 fs_fd = inotify_init ();
2728
2729 if (fs_fd >= 0)
2730 {
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w);
2734 }
2735}
2736
2737inline_size void
2738infy_fork (EV_P)
2739{
2740 int slot;
2741
2742 if (fs_fd < 0)
2743 return;
2744
2745 close (fs_fd);
2746 fs_fd = inotify_init ();
2747
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2749 {
2750 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0;
2752
2753 while (w_)
2754 {
2755 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us add this watcher */
2757
2758 w->wd = -1;
2759
2760 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else
2763 ev_timer_again (EV_A_ &w->timer);
2764 }
2765 }
2766}
2767
2768#endif
2769
2770#ifdef _WIN32
2771# define EV_LSTAT(p,b) _stati64 (p, b)
2772#else
2773# define EV_LSTAT(p,b) lstat (p, b)
2774#endif
1661 2775
1662void 2776void
1663ev_stat_stat (EV_P_ ev_stat *w) 2777ev_stat_stat (EV_P_ ev_stat *w)
1664{ 2778{
1665 if (lstat (w->path, &w->attr) < 0) 2779 if (lstat (w->path, &w->attr) < 0)
1666 w->attr.st_nlink = 0; 2780 w->attr.st_nlink = 0;
1667 else if (!w->attr.st_nlink) 2781 else if (!w->attr.st_nlink)
1668 w->attr.st_nlink = 1; 2782 w->attr.st_nlink = 1;
1669} 2783}
1670 2784
1671static void 2785static void noinline
1672stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2786stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673{ 2787{
1674 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675 2789
1676 /* we copy this here each the time so that */ 2790 /* we copy this here each the time so that */
1677 /* prev has the old value when the callback gets invoked */ 2791 /* prev has the old value when the callback gets invoked */
1678 w->prev = w->attr; 2792 w->prev = w->attr;
1679 ev_stat_stat (EV_A_ w); 2793 ev_stat_stat (EV_A_ w);
1680 2794
1681 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if (
2797 w->prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime
2808 ) {
2809 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0)
2811 {
2812 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w);
2814 ev_stat_stat (EV_A_ w); /* avoid race... */
2815 }
2816 #endif
2817
1682 ev_feed_event (EV_A_ w, EV_STAT); 2818 ev_feed_event (EV_A_ w, EV_STAT);
2819 }
1683} 2820}
1684 2821
1685void 2822void
1686ev_stat_start (EV_P_ ev_stat *w) 2823ev_stat_start (EV_P_ ev_stat *w)
1687{ 2824{
1688 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
1689 return; 2826 return;
1690 2827
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); 2828 ev_stat_stat (EV_A_ w);
1696 2829
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1697 if (w->interval < MIN_STAT_INTERVAL) 2831 w->interval = MIN_STAT_INTERVAL;
1698 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699 2832
1700 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2833 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)); 2834 ev_set_priority (&w->timer, ev_priority (w));
2835
2836#if EV_USE_INOTIFY
2837 infy_init (EV_A);
2838
2839 if (fs_fd >= 0)
2840 infy_add (EV_A_ w);
2841 else
2842#endif
1702 ev_timer_start (EV_A_ &w->timer); 2843 ev_timer_again (EV_A_ &w->timer);
1703 2844
1704 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
1705} 2848}
1706 2849
1707void 2850void
1708ev_stat_stop (EV_P_ ev_stat *w) 2851ev_stat_stop (EV_P_ ev_stat *w)
1709{ 2852{
1710 ev_clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
1711 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
1712 return; 2855 return;
1713 2856
2857 EV_FREQUENT_CHECK;
2858
2859#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w);
2861#endif
1714 ev_timer_stop (EV_A_ &w->timer); 2862 ev_timer_stop (EV_A_ &w->timer);
1715 2863
1716 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
1717}
1718#endif
1719 2865
2866 EV_FREQUENT_CHECK;
2867}
2868#endif
2869
2870#if EV_IDLE_ENABLE
1720void 2871void
1721ev_idle_start (EV_P_ ev_idle *w) 2872ev_idle_start (EV_P_ ev_idle *w)
1722{ 2873{
1723 if (expect_false (ev_is_active (w))) 2874 if (expect_false (ev_is_active (w)))
1724 return; 2875 return;
1725 2876
2877 pri_adjust (EV_A_ (W)w);
2878
2879 EV_FREQUENT_CHECK;
2880
2881 {
2882 int active = ++idlecnt [ABSPRI (w)];
2883
2884 ++idleall;
1726 ev_start (EV_A_ (W)w, ++idlecnt); 2885 ev_start (EV_A_ (W)w, active);
2886
1727 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728 idles [idlecnt - 1] = w; 2888 idles [ABSPRI (w)][active - 1] = w;
2889 }
2890
2891 EV_FREQUENT_CHECK;
1729} 2892}
1730 2893
1731void 2894void
1732ev_idle_stop (EV_P_ ev_idle *w) 2895ev_idle_stop (EV_P_ ev_idle *w)
1733{ 2896{
1734 ev_clear_pending (EV_A_ (W)w); 2897 clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w))) 2898 if (expect_false (!ev_is_active (w)))
1736 return; 2899 return;
1737 2900
2901 EV_FREQUENT_CHECK;
2902
1738 { 2903 {
1739 int active = ((W)w)->active; 2904 int active = ev_active (w);
1740 idles [active - 1] = idles [--idlecnt]; 2905
1741 ((W)idles [active - 1])->active = active; 2906 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2907 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2908
2909 ev_stop (EV_A_ (W)w);
2910 --idleall;
1742 } 2911 }
1743 2912
1744 ev_stop (EV_A_ (W)w); 2913 EV_FREQUENT_CHECK;
1745} 2914}
2915#endif
1746 2916
1747void 2917void
1748ev_prepare_start (EV_P_ ev_prepare *w) 2918ev_prepare_start (EV_P_ ev_prepare *w)
1749{ 2919{
1750 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
1751 return; 2921 return;
2922
2923 EV_FREQUENT_CHECK;
1752 2924
1753 ev_start (EV_A_ (W)w, ++preparecnt); 2925 ev_start (EV_A_ (W)w, ++preparecnt);
1754 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1755 prepares [preparecnt - 1] = w; 2927 prepares [preparecnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
1756} 2930}
1757 2931
1758void 2932void
1759ev_prepare_stop (EV_P_ ev_prepare *w) 2933ev_prepare_stop (EV_P_ ev_prepare *w)
1760{ 2934{
1761 ev_clear_pending (EV_A_ (W)w); 2935 clear_pending (EV_A_ (W)w);
1762 if (expect_false (!ev_is_active (w))) 2936 if (expect_false (!ev_is_active (w)))
1763 return; 2937 return;
1764 2938
2939 EV_FREQUENT_CHECK;
2940
1765 { 2941 {
1766 int active = ((W)w)->active; 2942 int active = ev_active (w);
2943
1767 prepares [active - 1] = prepares [--preparecnt]; 2944 prepares [active - 1] = prepares [--preparecnt];
1768 ((W)prepares [active - 1])->active = active; 2945 ev_active (prepares [active - 1]) = active;
1769 } 2946 }
1770 2947
1771 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
1772} 2951}
1773 2952
1774void 2953void
1775ev_check_start (EV_P_ ev_check *w) 2954ev_check_start (EV_P_ ev_check *w)
1776{ 2955{
1777 if (expect_false (ev_is_active (w))) 2956 if (expect_false (ev_is_active (w)))
1778 return; 2957 return;
2958
2959 EV_FREQUENT_CHECK;
1779 2960
1780 ev_start (EV_A_ (W)w, ++checkcnt); 2961 ev_start (EV_A_ (W)w, ++checkcnt);
1781 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1782 checks [checkcnt - 1] = w; 2963 checks [checkcnt - 1] = w;
2964
2965 EV_FREQUENT_CHECK;
1783} 2966}
1784 2967
1785void 2968void
1786ev_check_stop (EV_P_ ev_check *w) 2969ev_check_stop (EV_P_ ev_check *w)
1787{ 2970{
1788 ev_clear_pending (EV_A_ (W)w); 2971 clear_pending (EV_A_ (W)w);
1789 if (expect_false (!ev_is_active (w))) 2972 if (expect_false (!ev_is_active (w)))
1790 return; 2973 return;
1791 2974
2975 EV_FREQUENT_CHECK;
2976
1792 { 2977 {
1793 int active = ((W)w)->active; 2978 int active = ev_active (w);
2979
1794 checks [active - 1] = checks [--checkcnt]; 2980 checks [active - 1] = checks [--checkcnt];
1795 ((W)checks [active - 1])->active = active; 2981 ev_active (checks [active - 1]) = active;
1796 } 2982 }
1797 2983
1798 ev_stop (EV_A_ (W)w); 2984 ev_stop (EV_A_ (W)w);
2985
2986 EV_FREQUENT_CHECK;
1799} 2987}
1800 2988
1801#if EV_EMBED_ENABLE 2989#if EV_EMBED_ENABLE
1802void noinline 2990void noinline
1803ev_embed_sweep (EV_P_ ev_embed *w) 2991ev_embed_sweep (EV_P_ ev_embed *w)
1804{ 2992{
1805 ev_loop (w->loop, EVLOOP_NONBLOCK); 2993 ev_loop (w->other, EVLOOP_NONBLOCK);
1806} 2994}
1807 2995
1808static void 2996static void
1809embed_cb (EV_P_ ev_io *io, int revents) 2997embed_io_cb (EV_P_ ev_io *io, int revents)
1810{ 2998{
1811 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1812 3000
1813 if (ev_cb (w)) 3001 if (ev_cb (w))
1814 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3002 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815 else 3003 else
1816 ev_embed_sweep (loop, w); 3004 ev_loop (w->other, EVLOOP_NONBLOCK);
1817} 3005}
3006
3007static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011
3012 {
3013 struct ev_loop *loop = w->other;
3014
3015 while (fdchangecnt)
3016 {
3017 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3019 }
3020 }
3021}
3022
3023static void
3024embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3025{
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027
3028 ev_embed_stop (EV_A_ w);
3029
3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3035 }
3036
3037 ev_embed_start (EV_A_ w);
3038}
3039
3040#if 0
3041static void
3042embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3043{
3044 ev_idle_stop (EV_A_ idle);
3045}
3046#endif
1818 3047
1819void 3048void
1820ev_embed_start (EV_P_ ev_embed *w) 3049ev_embed_start (EV_P_ ev_embed *w)
1821{ 3050{
1822 if (expect_false (ev_is_active (w))) 3051 if (expect_false (ev_is_active (w)))
1823 return; 3052 return;
1824 3053
1825 { 3054 {
1826 struct ev_loop *loop = w->loop; 3055 struct ev_loop *loop = w->other;
1827 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3056 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); 3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829 } 3058 }
3059
3060 EV_FREQUENT_CHECK;
1830 3061
1831 ev_set_priority (&w->io, ev_priority (w)); 3062 ev_set_priority (&w->io, ev_priority (w));
1832 ev_io_start (EV_A_ &w->io); 3063 ev_io_start (EV_A_ &w->io);
1833 3064
3065 ev_prepare_init (&w->prepare, embed_prepare_cb);
3066 ev_set_priority (&w->prepare, EV_MINPRI);
3067 ev_prepare_start (EV_A_ &w->prepare);
3068
3069 ev_fork_init (&w->fork, embed_fork_cb);
3070 ev_fork_start (EV_A_ &w->fork);
3071
3072 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3073
1834 ev_start (EV_A_ (W)w, 1); 3074 ev_start (EV_A_ (W)w, 1);
3075
3076 EV_FREQUENT_CHECK;
1835} 3077}
1836 3078
1837void 3079void
1838ev_embed_stop (EV_P_ ev_embed *w) 3080ev_embed_stop (EV_P_ ev_embed *w)
1839{ 3081{
1840 ev_clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
1841 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
1842 return; 3084 return;
1843 3085
3086 EV_FREQUENT_CHECK;
3087
1844 ev_io_stop (EV_A_ &w->io); 3088 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork);
1845 3091
1846 ev_stop (EV_A_ (W)w); 3092 EV_FREQUENT_CHECK;
1847} 3093}
1848#endif 3094#endif
1849 3095
1850#if EV_FORK_ENABLE 3096#if EV_FORK_ENABLE
1851void 3097void
1852ev_fork_start (EV_P_ ev_fork *w) 3098ev_fork_start (EV_P_ ev_fork *w)
1853{ 3099{
1854 if (expect_false (ev_is_active (w))) 3100 if (expect_false (ev_is_active (w)))
1855 return; 3101 return;
3102
3103 EV_FREQUENT_CHECK;
1856 3104
1857 ev_start (EV_A_ (W)w, ++forkcnt); 3105 ev_start (EV_A_ (W)w, ++forkcnt);
1858 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1859 forks [forkcnt - 1] = w; 3107 forks [forkcnt - 1] = w;
3108
3109 EV_FREQUENT_CHECK;
1860} 3110}
1861 3111
1862void 3112void
1863ev_fork_stop (EV_P_ ev_fork *w) 3113ev_fork_stop (EV_P_ ev_fork *w)
1864{ 3114{
1865 ev_clear_pending (EV_A_ (W)w); 3115 clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w))) 3116 if (expect_false (!ev_is_active (w)))
1867 return; 3117 return;
1868 3118
3119 EV_FREQUENT_CHECK;
3120
1869 { 3121 {
1870 int active = ((W)w)->active; 3122 int active = ev_active (w);
3123
1871 forks [active - 1] = forks [--forkcnt]; 3124 forks [active - 1] = forks [--forkcnt];
1872 ((W)forks [active - 1])->active = active; 3125 ev_active (forks [active - 1]) = active;
1873 } 3126 }
1874 3127
1875 ev_stop (EV_A_ (W)w); 3128 ev_stop (EV_A_ (W)w);
3129
3130 EV_FREQUENT_CHECK;
3131}
3132#endif
3133
3134#if EV_ASYNC_ENABLE
3135void
3136ev_async_start (EV_P_ ev_async *w)
3137{
3138 if (expect_false (ev_is_active (w)))
3139 return;
3140
3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK;
3144
3145 ev_start (EV_A_ (W)w, ++asynccnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3147 asyncs [asynccnt - 1] = w;
3148
3149 EV_FREQUENT_CHECK;
3150}
3151
3152void
3153ev_async_stop (EV_P_ ev_async *w)
3154{
3155 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w)))
3157 return;
3158
3159 EV_FREQUENT_CHECK;
3160
3161 {
3162 int active = ev_active (w);
3163
3164 asyncs [active - 1] = asyncs [--asynccnt];
3165 ev_active (asyncs [active - 1]) = active;
3166 }
3167
3168 ev_stop (EV_A_ (W)w);
3169
3170 EV_FREQUENT_CHECK;
3171}
3172
3173void
3174ev_async_send (EV_P_ ev_async *w)
3175{
3176 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync);
1876} 3178}
1877#endif 3179#endif
1878 3180
1879/*****************************************************************************/ 3181/*****************************************************************************/
1880 3182
… …
1890once_cb (EV_P_ struct ev_once *once, int revents) 3192once_cb (EV_P_ struct ev_once *once, int revents)
1891{ 3193{
1892 void (*cb)(int revents, void *arg) = once->cb; 3194 void (*cb)(int revents, void *arg) = once->cb;
1893 void *arg = once->arg; 3195 void *arg = once->arg;
1894 3196
1895 ev_io_stop (EV_A_ &once->io); 3197 ev_io_stop (EV_A_ &once->io);
1896 ev_timer_stop (EV_A_ &once->to); 3198 ev_timer_stop (EV_A_ &once->to);
1897 ev_free (once); 3199 ev_free (once);
1898 3200
1899 cb (revents, arg); 3201 cb (revents, arg);
1900} 3202}
1901 3203
1902static void 3204static void
1903once_cb_io (EV_P_ ev_io *w, int revents) 3205once_cb_io (EV_P_ ev_io *w, int revents)
1904{ 3206{
1905 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3207 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3208
3209 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1906} 3210}
1907 3211
1908static void 3212static void
1909once_cb_to (EV_P_ ev_timer *w, int revents) 3213once_cb_to (EV_P_ ev_timer *w, int revents)
1910{ 3214{
1911 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3215 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3216
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1912} 3218}
1913 3219
1914void 3220void
1915ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1916{ 3222{
… …
1938 ev_timer_set (&once->to, timeout, 0.); 3244 ev_timer_set (&once->to, timeout, 0.);
1939 ev_timer_start (EV_A_ &once->to); 3245 ev_timer_start (EV_A_ &once->to);
1940 } 3246 }
1941} 3247}
1942 3248
3249/*****************************************************************************/
3250
3251#if EV_WALK_ENABLE
3252void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3254{
3255 int i, j;
3256 ev_watcher_list *wl, *wn;
3257
3258 if (types & (EV_IO | EV_EMBED))
3259 for (i = 0; i < anfdmax; ++i)
3260 for (wl = anfds [i].head; wl; )
3261 {
3262 wn = wl->next;
3263
3264#if EV_EMBED_ENABLE
3265 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3266 {
3267 if (types & EV_EMBED)
3268 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3269 }
3270 else
3271#endif
3272#if EV_USE_INOTIFY
3273 if (ev_cb ((ev_io *)wl) == infy_cb)
3274 ;
3275 else
3276#endif
3277 if ((ev_io *)wl != &pipe_w)
3278 if (types & EV_IO)
3279 cb (EV_A_ EV_IO, wl);
3280
3281 wl = wn;
3282 }
3283
3284 if (types & (EV_TIMER | EV_STAT))
3285 for (i = timercnt + HEAP0; i-- > HEAP0; )
3286#if EV_STAT_ENABLE
3287 /*TODO: timer is not always active*/
3288 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3289 {
3290 if (types & EV_STAT)
3291 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3292 }
3293 else
3294#endif
3295 if (types & EV_TIMER)
3296 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3297
3298#if EV_PERIODIC_ENABLE
3299 if (types & EV_PERIODIC)
3300 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif
3303
3304#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; )
3307 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif
3310
3311#if EV_FORK_ENABLE
3312 if (types & EV_FORK)
3313 for (i = forkcnt; i--; )
3314 if (ev_cb (forks [i]) != embed_fork_cb)
3315 cb (EV_A_ EV_FORK, forks [i]);
3316#endif
3317
3318#if EV_ASYNC_ENABLE
3319 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif
3323
3324 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]);
3330
3331 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]);
3334
3335 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i)
3337 for (wl = signals [i].head; wl; )
3338 {
3339 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn;
3342 }
3343
3344 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; )
3346 for (wl = childs [i]; wl; )
3347 {
3348 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn;
3351 }
3352/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354}
3355#endif
3356
3357#if EV_MULTIPLICITY
3358 #include "ev_wrap.h"
3359#endif
3360
1943#ifdef __cplusplus 3361#ifdef __cplusplus
1944} 3362}
1945#endif 3363#endif
1946 3364

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